Vibration-reducing structure for five-compressing-chamber diaphragm pump

Abstract

A vibration-reducing structure for five-compressing-chamber diaphragm pump features a pump head body and a diaphragm membrane. The pump head body includes five operating holes and a basic curved dent circum-disposed around the upper side of each operating hole. The diaphragm membrane includes five equivalent piston acting zones such that each of which has a acting zone hole with an annular positioning protrusion for each acting zone hole and a basic curved protrusion circum-disposed around each concentric annular positioning protrusion in corresponding position with each mating basic curved dent in the pump head body. Thereby, five basic curved protrusions completely insert into corresponding five basic curved dents with a short length of moment arm in generating less torque, which is obtained by length of moment arm multiplying a constant acting force and primarily causes adverse vibration. With less torque, the vibration strength of the five-compressing-chamber diaphragm pump is substantially reduced.

Description

FIELD OF THE PRESENT INVENTION

The present invention relates to a vibration-reducing structure for five-compressing-chamber diaphragm pump, particularly for one structure that can reduce the “vibration strength” of the pump so that the annoying noise incurred by the “consonant vibration” with the housing of reverse osmosis purification (RO) purification system is deleted when it is installed on the commercial water supplying apparatus of large scale in either the settled home, recreational vehicle or mobile home

BACKGROUND OF THE INVENTION

Currently, the conventional five-compressing-chamber diaphragm pumps exclusively used with RO (Reverse Osmosis) purifier or RO water purification system, which is popularly installed on the water supplying apparatus in either the settled home, recreational vehicle or mobile home, have some various types. For five-compressing-chamber diaphragm pumps, other than the specific type as disclosed in the U.S. Pat. No. 8,449,267, the majority of conventional five-compressing-chamber diaphragm pumps can be categorized as similar design as shown in FIGS. 1 through 9. The conventional five-compressing-chamber diaphragm pump aforesaid essentially comprises a motor 10 with an output shaft 11, a motor upper chassis 30, a wobble plate with integral protruding cam-lobed shaft 40, an eccentric roundel mount 50, a pump head body 60, a diaphragm membrane 70, five pumping pistons 80, a piston valvular assembly 90 and a pump head cover 20, wherein:

Said motor upper chassis 30 includes a bearing 31 to be run through by the output shaft 11 of the motor 10, an upper annular rib ring 32 with several fastening bores 33 disposed therein in circumferential rim evenly;

Said wobble plate with integral protruding cam-lobed shaft 40 includes a shaft coupling hole 41 for being run through by the corresponding motor output shaft 11 of the motor 10;

Said eccentric roundel mount 50 includes a central bearing 51 at the bottom thereof for corresponding wobble plate with integral protruding cam-lobed shaft 40, five eccentric roundels 52 disposed thereon in circumferential location evenly such that each eccentric roundel 52 has a screw-threaded bore 54 and an annular positioning dent 55 formed on the top face thereof respectively in horizontal flush;

Said pump head body 60, which covers on the upper annular rib ring 32 of the motor upper chassis 30 to encompass the wobble plate with integral protruding cam-lobed shaft 40 and eccentric roundel mount 50 therein, includes five operating holes 61 disposed therein in circumferential location evenly such that each operating hole 61 has inner diameter slightly bigger than outer diameter of each corresponding eccentric roundel 52 in the eccentric roundel mount 50 for receiving each corresponding eccentric roundel 52 respectively, a lower annular flange 62 formed thereunder for mating with corresponding upper annular rib ring 32 of the motor upper chassis 30, several fastening bores 63 disposed thereat in circumferential location;

Said diaphragm membrane 70, which is extrude-molded by semi-rigid elastic material and to be placed on the pump head body 60, includes a pair of parallel outer raised brim 71 and inner raised brim 72 as well as five evenly spaced radial raised partition ribs 73 such that each end of radial raised partition rib 73 connects with the joint of two adjacent inner raised brims 72, five equivalent piston acting zones 74 are formed and partitioned by the radial raised partition ribs 73, wherein each piston acting zone 74 has an acting zone hole 75 created therein in correspondence with each screw-threaded bore 54 in the screw-threaded bore 53 of the eccentric roundel mount 50 respectively, and an annular positioning protrusion 76 for each acting zone hole 75 is formed at the bottom side of the diaphragm membrane 70 (as shown in FIGS. 7 and 8);

Each said pumping piston 80, which is respectively disposed in each corresponding piston acting zones 74 of the diaphragm membrane 70, has a tiered hole 81 run through thereof, after having each annular positioning protrusion 76 in the diaphragm membrane 70 inserted into each corresponding annular positioning dent 55 in the eccentric roundel 52 of the eccentric roundel mount 50, by running fastening screw 1 through the tiered hole 81 of each pumping piston 80 and the acting zone hole 75 of each corresponding piston acting zone 74 in the diaphragm membrane 70, the diaphragm membrane 70 and five pumping pistons 80 can be securely screwed into each screw-threaded bore 54 of corresponding five eccentric roundels 52 in the eccentric roundel mount 50 (as enlarged view shown in FIG. 9 of association);

Said piston valvular assembly 90, which suitably covers on the diaphragm membrane 70, includes a downward outlet raised brim 91 to insert between the outer raised brim 71 and inner raised brim 72 in the diaphragm membrane 70, a central round outlet mount 92 composed of a central positioning bore 93 with five equivalent sectors such that each of sectors contains a group of multiple evenly circum-located outlet ports 95, a T-shaped plastic anti-backflow valve 94 with a central positioning shank, and five circumjacent inlet mounts 96 such that each of which includes a group of multiple evenly circum-located inlet ports 97 and a inverted central piston disk 98 respectively so that each piston disk 98 serves as a valve for each corresponding group of multiple inlet ports 97, wherein the central positioning shank of the plastic anti-backflow valve 94 mates with the central positioning bore 93 of the central outlet mount 92 such that each group of multiple outlet ports 95 of each sector in the central round outlet mount 92 are communicable with each corresponding inlet mount 96, and a hermetical preliminary-compressing chamber 26 is formed between each inlet mount 96 and each corresponding piston acting zone 74 in the diaphragm membrane 70 upon the downward outlet raised brim 91 having inserted between the outer raised brim 71 and inner raised brim 72 in the diaphragm membrane 70 such that one end of each preliminary-compressing chamber 26 is communicable with each corresponding group of multiple inlet ports 97 (as enlarged view shown in FIG. 9 of association); and

Said pump head cover 20, which covers on the pump head body 60 to encompass the piston valvular assembly 90, pumping piston 80 and diaphragm membrane 70 therein, includes a water inlet orifice 21, a water outlet orifice 22, and several fastening bores 23 while a tiered rim 24 and an annular rib ring 25 are disposed in the bottom inside of said pump head cover 20 such that the outer brim for the assembly of diaphragm membrane 70 and piston valvular assembly 90 can hermetically attach on the tiered rim 24 upon the piston valvular assembly 90 having covered the diaphragm membrane 70 closely (as enlarged view shown in FIG. 9 of association), wherein a high-compressing chamber 27 is created between the inside cavity of the annular rib ring 25 and the central outlet mount 92 of the piston valvular assembly 90 upon having the bottom of the annular rib ring 25 closely covered on the brim of the central outlet mount 92 (as shown in FIG. 9).

By running each fastening bolt 2 through the each corresponding fastening bores 23 of pump head cover 20 and each corresponding fastening bore 63 in the pump head body 60, then putting a nut 3 onto each fastening bolt 2 to securely screw the pump head cover 20 and pump head body 60 with the motor upper chassis 30 via each corresponding fastening bore 33 in the motor upper chassis 30 so that the whole assembly of the five-compressing-chamber diaphragm pump is finished (as shown in FIGS. 1 and 9).

Referring to FIGS. 10 and 11, they are illustrative figures for the operation mode of conventional five-compressing-chamber diaphragm pump.

Firstly, when the motor 10 is powered on, the wobble plate 40 is driven to rotate by the motor output shaft 11 so that five eccentric roundels 52 on the eccentric roundel mount 50 orderly move in up-and-down reciprocal stroke constantly;

Secondly, meanwhile, five pumping pistons 80 and five piston acting zones 73 in the diaphragm membrane 70 are orderly driven by the up-and-down reciprocal stroke of five eccentric roundels 52 to move in up-and-down displacement;

Thirdly, when the eccentric roundel 52 moves in “down stroke” with pumping piston 80 and piston acting zone 74 in “down displacement”, the piston disk 98 of corresponding inlet mount 96 in the piston valvular assembly 90 is pushed into “open” status so that the tap water W can flow into the preliminary-compressing chamber 26 orderly via water inlet orifice 21 in the pump head cover 20 and the group inlet ports 97 of corresponding inlet mount 96 in the piston valvular assembly 90 (as shown in FIG. 10 and arrowhead indication W in enlarged view of association);

Fourthly, when the eccentric roundel 52 moves in “up stroke” with pumping piston 80 and piston acting zone 74 in “up displacement”, the piston disk 98 in the piston valvular assembly 90 is pulled into “close” status to compress the tap water W in the preliminary-compressing chamber 26 to increase the water pressure therein up to range of 100 psi-150 psi and become into pressurized water Wp with result that the plastic anti-backflow valve 94 in the piston valvular assembly 90 is pushed to “open” status;

Fifthly, when the plastic anti-backflow valve 94 in the piston valvular assembly 90 is pushed to “open” status, the pressurized water Wp in the preliminary-compressing chamber 26 is directed into high-compressing chamber 27 via group of outlet ports 95 for the corresponding sector in central outlet mount 92, then expelled out of the water outlet orifice 22 in the pump head cover 20 (as shown in FIG. 11 and arrowhead indication Wp in enlarged view of association); and

Finally, with orderly iterative action for each group of outlet ports 95 for five sectors in central outlet mount 92, the pressurized water Wp is constantly discharged out of the conventional five-compressing-chamber diaphragm pump for being further RO-filtered by the RO-cartridge so that the final filtered pressurized water Wp can be used in the commercial reverse osmosis water purification system of large sale, which is popularly installed on the water supplying apparatus in either the settled home, recreational vehicle or mobile home.

Referring to FIGS. 12 through 14, a primary serious drawback has long-lasting existed in the foregoing conventional five-compressing-chamber diaphragm pump as below. As described previously, when the motor 10 is powered on, the wobble plate 40 is driven to rotate by the motor output shaft 11 so that five eccentric roundels 52 on the eccentric roundel mount 50 orderly move in up-and-down reciprocal stroke constantly, meanwhile five pumping pistons 80 and five piston acting zones 74 in the diaphragm membrane 70 are orderly driven by the up-and-down reciprocal stroke of five eccentric roundels 52 to move in up-and-down displacement so that equivalently a reiterative acting force F constantly acting on the five piston acting zones 74 with a length of moment arm L1 obtained from the outer raised brim 71 to the peripheral of the annular positioning protrusion 76 (as shown in FIG. 13). Thereby, a resultant torque is created by the acting force F multiplying the length of moment arm L1 as shown by the formula “torque=acting force F×length of moment arm L1” namely. However, the resultant torque causes the whole conventional five-compressing-chamber diaphragm pump to vibrate directly. With high rotational speed of the motor output shaft 11 in the motor 10 up to range of 800-1200 rpm, the vibrating strength caused by alternately acting of five eccentric roundels 52 can reach unacceptable condition persistently.

In view of the all drawbacks aforesaid in the conventional five-compressing-chamber diaphragm pump, as shown in FIG. 14, a cushion base 100 with a pair of wing plates 101 is always bolstered as supporting supplementary such that each wing plate 101 is further sleeved by a rubber shock absorber 102 for vibration suppressing enhancement. Upon installation the conventional five-compressing-chamber diaphragm pump in the water supplying apparatus in the settled home or mobile home, the cushion base 100 is firmly screwed onto the housing C of the reverse osmosis purification unit by means of suitable fastening screws 103 and corresponding nuts 104. However, the practical vibration suppressing efficiency of using foregoing cushion base 100 with wing plates 101 and rubber shock absorber 102 only affects to the primary vibrating drawback aforesaid and in limited degree because the overall “resonant shakes” aforesaid will incur the vibration of the housing C for the reverse osmosis purification unit to become stronger with harassing noise. Other than the primary vibrating drawback aforesaid, the water pipe P connected on the water outlet orifice 22 of the pump head cover 20 will synchronously “shake” in resonance with the “vibration” aforesaid (as hypothetic line P for illustrative view a of association shown in FIG. 14). Thereby, the synchronous “shake” of the water pipe P will further incur other rest parts of the “conventional five-compressing-chamber diaphragm pump” to simultaneously “shake” also. Therefore, after having served for a certain period, the “water leakage” of the “conventional five-compressing-chamber diaphragm pump” will happen due to gradually loosed connection between water pipe P and water outlet orifice 22 as well as gradually loosed fitness among other rest parts incurred by the “shake” effects. For the issues of overall “resonant shakes” and the “water leakage” for the conventional five-compressing-chamber diaphragm pump aforesaid are incurred by the foregoing primary vibrating drawback. Therefore, how to substantially reduce all the drawbacks associated with the operating vibration for the five-compressing-chamber diaphragm pump becomes an urgent and critical issue.

Referring to FIGS. 15 and 17, they are illustrative figures for the structure and operation of conventional five-compressing-chamber diaphragm pump with another piston valvular assembly 900. The piston valvular assembly 900 includes a downward outlet raised brim 901 to insert between the outer raised brim 71 and inner raised brim 72 in the diaphragm membrane 70, a central round outlet mount 902, five equivalent sector zones evenly distributed in the outlet mount 902 such that each of sectors composed of a zone positioning bore 903, a T-shaped zone anti-backflow valve 904 with a zone positioning shank as well as a group of multiple evenly circum-located outlet ports 905 around each corresponding zone positioning bore 903, and five circumjacent inlet mounts 906 such that each of which includes a group of multiple evenly circum-located inlet ports 907 and a inverted central piston disk 908 respectively so that each piston disk 908 serves as a valve for each corresponding group of multiple inlet ports 907,

wherein each zone positioning shank of the zone anti-backflow valve 904 mates with the zone positioning bore 903 of the central outlet mount 902 such that each group of multiple outlet ports 905 of each sector zone in the central round outlet mount 902 are communicable with each corresponding inlet mount 906, and

a hermetical preliminary-compressing chamber 26 is formed between each inlet mount 906 and each corresponding piston acting zone 74 in the diaphragm membrane 70 upon the downward outlet raised brim 901 having inserted between the outer raised brim 71 and inner raised brim 72 in the diaphragm membrane 70 such that one end of each preliminary-compressing chamber 26 is communicable with each corresponding group of multiple inlet ports 907 (as enlarged view shown in FIG. 9 of association); and

By running each fastening bolt 2 through the each corresponding fastening bores 23 of pump head cover 20 and each corresponding fastening bore 63 in the pump head body 60, then putting a nut 3 onto each fastening bolt 2 to securely screw the pump head cover 20 and pump head body 60 with the motor upper chassis 30 via each corresponding fastening bore 33 in the motor upper chassis 30 so that the whole assembly of the five-compressing-chamber diaphragm pump is finished (as shown in FIGS. 1 and 19).

Please refer to FIG. 17. Firstly, when the motor 10 is powered on, the wobble plate 40 is driven to rotate by the motor output shaft 11 so that five eccentric roundels 52 on the eccentric roundel mount 50 orderly move in up-and-down reciprocal stroke constantly;

Secondly, meanwhile, five pumping pistons 80 and five piston acting zones 73 in the diaphragm membrane 70 are orderly driven by the up-and-down reciprocal stroke of five eccentric roundels 52 to move in up-and-down displacement;

Thirdly, when the eccentric roundel 52 moves in “down stroke” with pumping piston 80 and piston acting zone 74 in “down displacement”, the piston disk 904 of corresponding inlet mount 906 in the piston valvular assembly 900 is pushed into “open” status so that the tap water W can flow into the preliminary-compressing chamber 26 orderly via water inlet orifice 21 in the pump head cover 20 and the group inlet ports 907 of corresponding inlet mount 906 in the piston valvular assembly 90 (as shown in FIG. 10 and arrowhead indication W in enlarged view of association);

Fourthly, when the eccentric roundel 52 moves in “up stroke” with pumping piston 80 and piston acting zone 74 in “up displacement”, the piston disk 904 in the piston valvular assembly 90 is pulled into “close” status to compress the tap water W in the preliminary-compressing chamber 26 to increase the water pressure therein up to range of 100 psi-150 psi and become into pressurized water Wp with result that the zone anti-backflow valve 904 in the piston valvular assembly 900 is pushed to “open” status;

Fifthly, when the zone anti-backflow valve 904 in the piston valvular assembly 90 is pushed to “open” status, the pressurized water Wp in the preliminary-compressing chamber 26 is directed into high-compressing chamber 27 via group of outlet ports 905 for the corresponding sector in central outlet mount 902, then expelled out of the water outlet orifice 22 in the pump head cover 20 (as shown in FIG. 11 and arrowhead indication Wp in enlarged view of association); and

Finally, with orderly iterative action for each group of outlet ports 95 for five sectors in central outlet mount 902, the pressurized water Wp is constantly discharged out of the conventional five-compressing-chamber diaphragm pump for being further RO-filtered by the RO-cartridge so that the final filtered pressurized water Wp can be used in the commercial reverse osmosis water purification system of large sale, which is popularly installed on the water supplying apparatus in either the settled home, recreational vehicle or mobile home.

The foregoing issues of overall “resonant shakes” and the “water leakage” for the conventional five-compressing-chamber diaphragm pump incurred by the foregoing primary vibrating drawback are also happened in the piston valvular assembly 900. Therefore, how to substantially reduce all the drawbacks associated with the operating vibration for the five-compressing-chamber diaphragm pump becomes an urgent and critical issue indeed.

SUMMARY OF THE INVENTION

The primary object is to provide a vibration-reducing structure for five-compressing-chamber diaphragm pump features of a pump head body and a diaphragm membrane, where the pump head body includes five operating holes and a basic curved dent circum-disposed around the upper side of each operating hole while the diaphragm membrane includes five equivalent piston acting zones each of which with a acting zone hole, an annular positioning protrusion for each acting zone hole formed, and a basic curved protrusion circum-disposed around each concentric annular positioning protrusion in corresponding position with each mating basic curved dent in the pump head body so that five basic curved protrusions completely insert into corresponding five basic curved dents with a short length of moment arm in generating less torque, which is obtained by length of moment arm multiplying a constant acting force and primarily causes adverse vibration. With less torque, the vibration strength of the compressing diaphragm pump is substantially reduced.

The other object is to provide a vibration-reducing structure for five-compressing-chamber diaphragm pump features of a pump head body with five basic curved dents and a diaphragm membrane with five basic curved protrusions such that five basic curved protrusions completely insert into corresponding five basic curved dents with a short length of moment arm in generating less torque, which is obtained by length of moment arm multiplying a constant acting force and primarily causes adverse vibration. With less torque, the vibration strength of the compressing diaphragm pump is substantially reduced. Having the present invention installed on the housing of the reverse osmosis purification unit on the water supplying apparatus in either the settled home or mobile home pillowed by a conventional cushion base with rubber shock absorber, the harassing noise of the “resonant shakes” incurred in the conventional compressing diaphragm pump can be completely eliminated.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective assembled view for conventional five-compressing-chamber diaphragm pump.

FIG. 2 is a perspective exploded view for conventional five-compressing-chamber diaphragm pump.

FIG. 3 is a perspective view for pump head body of conventional five-compressing-chamber diaphragm pump.

FIG. 4 is a cross sectional view taken against the section line of 4-4 from previous FIG. 3.

FIG. 5 is a top view for pump head body of conventional five-compressing-chamber diaphragm pump.

FIG. 6 is a perspective view for diaphragm membrane of conventional five-compressing-chamber diaphragm pump.

FIG. 7 is a cross sectional view taken against the section line of 7-7 from previous FIG. 6.

FIG. 8 is a bottom view for diaphragm membrane of conventional five-compressing-chamber diaphragm pump.

FIG. 9 is a cross sectional view taken against the section line of 9-9 from previous FIG. 1.

FIG. 10 is the first operation illustrative view for conventional five-compressing-chamber diaphragm pump.

FIG. 11 is the second operation illustrative view for conventional five-compressing-chamber diaphragm pump.

FIG. 12 is the third operation illustrative view for conventional five-compressing-chamber diaphragm pump.

FIG. 13 is a partially enlarged view taken from circled-portion-a of previous FIG. 12.

FIG. 14 is a schematic view showing a conventional five-pressuring-chamber diaphragm pump installed on a mounting base in a reverse osmosis purification system.

FIG. 15 is a perspective view for another piston valvular assembly in conventional five-compressing-chamber diaphragm pump.

FIG. 16 is a cross sectional view taken against the section line of 16-16 from previous FIG. 15.

FIG. 17 is an operation illustrative view for another piston valvular assembly in conventional five-compressing-chamber diaphragm pump.

FIG. 18 is a perspective exploded view for the first exemplary embodiment of the present invention.

FIG. 19 is a perspective view for pump head body in the first exemplary embodiment of the present invention.

FIG. 20 is a cross sectional view taken against the section line of 20-20 from previous FIG. 19.

FIG. 21 is a top view for pump head body in the first exemplary embodiment of the present invention.

FIG. 22 is a perspective view for diaphragm membrane in the first exemplary embodiment of the present invention.

FIG. 23 is a cross sectional view taken against the section line of 23-23 from previous FIG. 22.

FIG. 24 is a bottom view for diaphragm membrane in the first exemplary embodiment of the present invention.

FIG. 25 is an assembled cross sectional view for the first exemplary embodiment of the present invention.

FIG. 26 is an operation illustrative view for the first exemplary embodiment of the present invention.

FIG. 27 is a partially enlarged view taken from circled-portion-a of previous FIG. 26.

FIG. 28 is a perspective view for another pump head body in the first exemplary embodiment of the present invention.

FIG. 29 is a cross sectional view taken against the section line of 29-29 from previous FIG. 28.

FIG. 30 is a cross sectional view for another separation of pump head body and diaphragm membrane in the first exemplary embodiment of the present invention.

FIG. 31 is a cross sectional view for another combination of pump head body and diaphragm membrane in the first exemplary embodiment of the present invention.

FIG. 32 is a perspective view for pump head body in the second exemplary embodiment of the present invention.

FIG. 33 is a cross sectional view taken against the section line of 33-33 from previous FIG. 32.

FIG. 34 is a top view for pump head body in the second exemplary embodiment of the present invention.

FIG. 35 is a perspective view for diaphragm membrane in the second exemplary embodiment of the present invention.

FIG. 36 is a cross sectional view taken against the section line of 36-36 from previous FIG. 35.

FIG. 37 is a bottom view for diaphragm membrane in the second exemplary embodiment of the present invention.

FIG. 38 is a cross sectional view for a combination of pump head body and diaphragm membrane in the second exemplary embodiment of the present invention.

FIG. 39 is a perspective view for another pump head body in the second exemplary embodiment of the present invention.

FIG. 40 is a cross sectional view taken against the section line of 40-40 from previous FIG. 39.

FIG. 41 is a cross sectional view for another separation of pump head body and diaphragm membrane in the second exemplary embodiment of the present invention.

FIG. 42 is a cross sectional view for another combination of pump head body and diaphragm membrane in the second exemplary embodiment of the present invention.

FIG. 43 is a perspective view for pump head body in the third exemplary embodiment of the present invention.

FIG. 44 is a cross sectional view taken against the section line of 44-44 from previous FIG. 43.

FIG. 45 is a top view for pump head body in the third exemplary embodiment of the present invention.

FIG. 46 is a perspective view for diaphragm membrane in the third exemplary embodiment of the present invention.

FIG. 47 is a cross sectional view taken against the section line of 47-47 from previous FIG. 46.

FIG. 48 is a bottom view for diaphragm membrane in the third exemplary embodiment of the present invention.

FIG. 49 is a cross sectional view for a combination of pump head body and diaphragm membrane in the third exemplary embodiment of the present invention.

FIG. 50 is a perspective view for another pump head body in the third exemplary embodiment of the present invention.

FIG. 51 is a cross sectional view taken against the section line of 51-51 from previous FIG. 50.

FIG. 52 is a cross sectional view for another separation of pump head body and diaphragm membrane in the third exemplary embodiment of the present invention.

FIG. 53 is a cross sectional view for another combination of pump head body and diaphragm membrane in the third exemplary embodiment of the present invention.

FIG. 54 is a perspective view for pump head body in the fourth exemplary embodiment of the present invention.

FIG. 55 is a cross sectional view taken against the section line of 55-55 from previous FIG. 54.

FIG. 56 is a top view for pump head body in the fourth exemplary embodiment of the present invention.

FIG. 57 is a perspective view for diaphragm membrane in the fourth exemplary embodiment of the present invention.

FIG. 58 is a cross sectional view taken against the section line of 58-58 from previous FIG. 57.

FIG. 59 is a bottom view for diaphragm membrane in the fourth exemplary embodiment of the present invention.

FIG. 60 is a cross sectional view for a combination of pump head body and diaphragm membrane in the fourth exemplary embodiment of the present invention.

FIG. 61 is a perspective view for another pump head body in the fourth exemplary embodiment of the present invention.

FIG. 62 is a cross sectional view taken against the section line of 62-62 from previous FIG. 61.

FIG. 63 is a cross sectional view for another separation of pump head body and diaphragm membrane in the fourth exemplary embodiment of the present invention.

FIG. 64 is a cross sectional view for another combination of pump head body and diaphragm membrane in the fourth exemplary embodiment of the present invention.

FIG. 65 is a perspective view for pump head body in the fifth exemplary embodiment of the present invention.

FIG. 66 is a cross sectional view taken against the section line of 66-66 from previous FIG. 65.

FIG. 67 is a top view for pump head body in the fifth exemplary embodiment of the present invention.

FIG. 68 is a perspective view for diaphragm membrane in the fifth exemplary embodiment of the present invention.

FIG. 69 is a cross sectional view taken against the section line of 69-69 from previous FIG. 68.

FIG. 70 is a bottom view for diaphragm membrane in the fifth exemplary embodiment of the present invention.

FIG. 71 is a cross sectional view for a combination of pump head body and diaphragm membrane in the fifth exemplary embodiment of the present invention.

FIG. 72 is a perspective view for another pump head body in the fifth exemplary embodiment of the present invention.

FIG. 73 is a cross sectional view taken against the section line of 73-73 from previous FIG. 72.

FIG. 74 is a cross sectional view for another separation of pump head body and diaphragm membrane in the fifth exemplary embodiment of the present invention.

FIG. 75 is a cross sectional view for another combination of pump head body and diaphragm membrane in the fifth exemplary embodiment of the present invention.

FIG. 76 is a perspective view for pump head body in the sixth exemplary embodiment of the present invention.

FIG. 77 is a cross sectional view taken against the section line of 77-77 from previous FIG. 76.

FIG. 78 is a top view for pump head body in the sixth exemplary embodiment of the present invention.

FIG. 79 is a perspective view for diaphragm membrane in the sixth exemplary embodiment of the present invention.

FIG. 80 is a cross sectional view taken against the section line of 80-80 from previous FIG. 79.

FIG. 81 is a bottom view for diaphragm membrane in the sixth exemplary embodiment of the present invention.

FIG. 82 is a cross sectional view for a combination of pump head body and diaphragm membrane in the sixth exemplary embodiment of the present invention.

FIG. 83 is a perspective view for another pump head body in the sixth exemplary embodiment of the present invention.

FIG. 84 is a cross sectional view taken against the section line of 84-84 from previous FIG. 83.

FIG. 85 is a cross sectional view for another separation of pump head body and diaphragm membrane in the sixth exemplary embodiment of the present invention.

FIG. 86 is a cross sectional view for another combination of pump head body and diaphragm membrane in the sixth exemplary embodiment of the present invention.

FIG. 87 is a perspective view for pump head body in the seventh exemplary embodiment of the present invention.

FIG. 88 is a cross sectional view taken against the section line of 88-88 from previous FIG. 87.

FIG. 89 is a top view for pump head body in the seventh exemplary embodiment of the present invention.

FIG. 90 is a perspective view for diaphragm membrane in the seventh exemplary embodiment of the present invention.

FIG. 91 is a cross sectional view taken against the section line of 91-91 from previous FIG. 90.

FIG. 92 is a bottom view for diaphragm membrane in the seventh exemplary embodiment of the present invention.

FIG. 93 is a cross sectional view for a combination of pump head body and diaphragm membrane in the seventh exemplary embodiment of the present invention.

FIG. 94 is a perspective view for another pump head body in the seventh exemplary embodiment of the present invention.

FIG. 95 is a cross sectional view taken against the section line of 95-95 from previous FIG. 94.

FIG. 96 is a cross sectional view for another separation of pump head body and diaphragm membrane in the seventh exemplary embodiment of the present invention.

FIG. 97 is a cross sectional view for another combination of pump head body and diaphragm membrane in the seventh exemplary embodiment of the present invention.

FIG. 98 is a top view for pump head body in the eighth exemplary embodiment of the present invention.

FIG. 99 is a cross sectional view taken against the section line of 99-99 from previous FIG. 98.

FIG. 100 is a bottom view for diaphragm membrane in the eighth exemplary embodiment of the present invention.

FIG. 101 is a cross sectional view taken against the section line of 101-101 from previous FIG. 100.

FIG. 102 is a cross sectional view for a combination of pump head body and diaphragm membrane in the eighth exemplary embodiment of the present invention.

FIG. 103 is a perspective view for another pump head body in the eighth exemplary embodiment of the present invention.

FIG. 104 is a cross sectional view taken against the section line of 104-104 from previous FIG. 103.

FIG. 105 is a cross sectional view for another separation of pump head body and diaphragm membrane in the eighth exemplary embodiment of the present invention.

FIG. 106 is a cross sectional view for another combination of pump head body and diaphragm membrane in the seventh exemplary embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring to FIGS. 18 through 25, they are illustrative figures for the first exemplary embodiment of “vibration-reducing structure for five-compressing-chamber diaphragm pump” in the present invention.

A basic curved dent 65 is circum-disposed around the upper side of each operating hole 61 in the pump head body 60 while a basic curved protrusion 77 is circum-disposed around each concentric annular positioning protrusion 76 at the bottom side of the diaphragm membrane 70 in corresponding position with each mating basic curved dent 65 in the pump head body 60 (as shown in FIGS. 23 and 24) so that each basic curved protrusions 77 at the bottom side of the diaphragm membrane 70 completely inserts into each corresponding basic curved dents 65 at the upper side of the pump head body 60 upon assembly of the pump head body 60 and the diaphragm membrane 70, as well as a short length of moment arm L2 from the basic curved protrusion 77 to the peripheral of the annular positioning protrusion 76 in the diaphragm membrane 70 is obtained in the operation of the present invention (as shown in FIG. 25 and enlarged view of association).

Referring to FIGS. 23, 24, 13 and 14, they are illustrative figures for the practical operation result in the first exemplary embodiment as a typical exemplary embodiment of vibration-reducing structure for five-compressing-chamber diaphragm pump in the present invention.

Comparing to the operation of conventional five-compressing-chamber diaphragm pump, a length of moment arm L1 from the outer raised brim 71 to the peripheral of the annular positioning protruding block 76 in the diaphragm membrane 70 is obtained (as shown in FIG. 13), a length of moment arm L2 from the basic curved protrusions 77 to the peripheral of the annular positioning protruding block 76 in the diaphragm membrane 70 is obtained in the operation of the present invention (as shown in FIG. 25).

By illustration of foregoing comparative result, it apparently shows that the length of moment arm L2 is shorter than the length of moment arm L1 (as shown in FIG. 27).

While the resultant torque is calculated by same acting force F multiplying the length of moment arm, the resultant torque of the present invention is smaller than that of the conventional five-compressing-chamber diaphragm pump since the length of moment arm L2 is shorter than the length of moment arm L1.

With the smaller resultant torque of the present invention, the vibration strength related is substantially reduced.

Through practical pilot test for the sample of the present invention, the result shows that the vibration strength related is less than one tenth (10%) of vibration strength in the conventional five-compressing-chamber diaphragm pump.

If the present invention is installed on the housing C of the reverse osmosis purification unit of the water supplying apparatus in either the settled home or mobile home such that it is also pillowed by a conventional cushion base 100 with a rubber shock absorber 102 (as shown in FIG. 14), the harassing noise of the “resonant shakes” incurred in the conventional five-compressing-chamber diaphragm pump can be completely eliminated.

As shown in FIGS. 28 and 29, in the first exemplary embodiment, each basic curved dent 65 of the pump head body 60 can be adapted into a basic curved bore 64.

As shown in FIGS. 30 and 31, in the first exemplary embodiment, each basic curved dent 65 in the pump head body 60 (as shown in FIGS. 19 and 20) and each corresponding basic curved protrusion 77 in the diaphragm membrane 70 (as shown in FIGS. 23 and 24) can be exchanged into a basic curved protrusion 651 in the pump head body 60 (as shown in FIG. 30) and a corresponding basic curved dent 771 in the diaphragm membrane 70 (as shown in FIG. 30) without affecting their mating condition.

Thereby, each basic curved protrusion 651 at the upper side of the pump head body 60 completely inserts into each corresponding basic curved dent 771 at the bottom side of the diaphragm membrane 70 upon assembly of the pump head body 60 and the diaphragm membrane 70 (as shown in FIG. 31).

Moreover, a short length of moment arm L3 from the basic curved dent 771 to the peripheral of the annular positioning protrusion 76 in the diaphragm membrane 70 is also obtained in the operation of the present invention (as shown in FIG. 31 and enlarged view of association) so that the newly devised contrivances of pump head body 60 and diaphragm membrane 70 have significant effect in reducing vibration as well.

Referring to FIGS. 32 through 38, they are illustrative figures for the second exemplary embodiment of vibration-reducing structure for five-compressing-chamber diaphragm pump in the present invention.

Each said basic curved dent 65 in the pump head body 60 (as shown in FIGS. 19 through 20) can be adapted into a linking five-curved dent 68 by linking jointed ends of adjacent basic curved dents 65 to encompass all five operating hole 61 (as shown in FIGS. 32 through 34) while each said corresponding basic curved protrusion 77 in the diaphragm membrane 70 (as shown in FIGS. 23 through 24) can be adapted into a linking five-curved protrusion 79 by linking jointed ends of adjacent basic curved protrusions 77 in corresponding position with the linking four-curved dent 68 in the pump head body 60 to encompass all five annular positioning protrusions 76 (as shown in FIGS. 36 and 37).

Thereby, the linking five-curved protrusion 79 at the bottom side of the diaphragm membrane 70 completely insert into the corresponding linking four-curved dent 68 at the upper side of the pump head body 60 upon assembly of the pump head body 60 and the diaphragm membrane 70 (as shown in FIG. 38).

Moreover, a short length of moment arm L2 from the linking five-curved protrusion 79 to the peripheral of the annular positioning protrusion 76 in the diaphragm membrane 70 is obtained in the operation of the present invention (as shown in FIG. 38 and enlarged view of association).

Thus, the newly devised contrivances of pump head body 60 and diaphragm membrane 70 have significant effect in reducing vibration as well.

As shown in FIGS. 39 and 40, in the second exemplary embodiment, each linking five-curved dent 68 of the pump head body 60 can be adapted into a linking five-curved slit 641.

As shown in FIGS. 41 and 42, in the second exemplary embodiment, the linking five-curved dent 68 in the pump head body 60 (as shown in FIGS. 32 to 34) and the corresponding linking five-curved protrusion 79 in the diaphragm membrane 70 (as shown in FIGS. 36 and 37) can be exchanged into a linking five-curved protrusion 681 in the pump head body 60 (as shown in FIG. 41) and a linking five-curved dent 791 in the diaphragm membrane 70 (as shown in FIG. 41) without affecting their mating condition.

Thereby, the linking five-curved protrusion 681 at the upper side of the pump head body 60 completely inserts into the linking five-curved dent 791 at the bottom side of the diaphragm membrane 70 upon assembly of the pump head body 60 and the diaphragm membrane 70 (as shown in FIG. 42).

Moreover, a short length of moment arm L3 from the linking five-curved dent 791 to the peripheral of the annular positioning protrusion 76 in the diaphragm membrane 70 is also obtained in the operation of the present invention (as shown in FIG. 42 and enlarged view of association)

Thus, the newly devised contrivances of pump head body 60 and diaphragm membrane 70 have significant effect in reducing vibration as well.

Referring to FIGS. 43 through 49, they are illustrative figures for the third exemplary embodiment of vibration-reducing structure for five-compressing-chamber diaphragm pump in the present invention.

A second outer curved dent 66 is further circum-disposed around each said basic curved dent 65 in the pump head body 60 (as shown in FIGS. 43 through 45) while a second outer curved protrusion 78 is further circum-disposed around each said basic curved protrusion 77 in the diaphragm membrane 70 in corresponding position with each mating second outer curved dent 66 in the pump head body 60 (as shown in FIGS. 47 and 48).

Thereby, each pair of basic curved protrusion 77 and second outer curved protrusion 78 at the bottom side of the diaphragm membrane 70 completely insert into each pair of corresponding basic curved dent 65 and second outer curved dent 66 at the upper side of the pump head body 60 upon assembly of the pump head body 60 and the diaphragm membrane 70 (as shown in FIG. 49).

Moreover, a short length of moment arm L2 from the basic curved protrusion 77 to the peripheral of the annular positioning protrusion 76 in the diaphragm membrane 70 is obtained in the operation of the present invention (as shown in FIG. 49 and enlarged view of association).

Thus, the newly devised contrivances of pump head body 60 and diaphragm membrane 70 not only have significant effect in reducing vibration but also enhance the un-displaceable steadiness in maintenance the length of moment arm L2 for resisting against the acting force F on the eccentric roundel 52.

As shown in FIGS. 50 and 51, in the third exemplary embodiment, each pair of basic curved dent 65 and second outer curved dent 66 of the pump head body 60 can be adapted into a pair of basic curved bore 64 and second outer curved bore 67.

As shown in FIGS. 52 and 53, in the third exemplary embodiment, each pair of basic curved dent 65 and second outer curved dent 66 in the pump head body 60 (as shown in FIGS. 43 to 45) and each corresponding pair of basic curved protrusion 77 and second outer curved protrusion 78 in the diaphragm membrane 70 (as shown in FIGS. 47 and 48) can be exchanged into a pair of basic curved protrusion 651 and second outer curved protrusion 661 in the pump head body 60 (as shown in FIG. 52) and a pair of corresponding basic curved dent 771 and second outer curved dent 781 in the diaphragm membrane 70 (as shown in FIG. 52) without affecting their mating condition.

Thereby, each pair of basic curved protrusion 651 and second outer curved protrusion 661 at the upper side of the pump head body 60 completely insert into each corresponding pair of basic curved dent 771 and second outer curved dent 781 at the bottom side of the diaphragm membrane 70 upon assembly of the pump head body 60 and the diaphragm membrane 70 (as shown in FIG. 53).

Moreover, a short length of moment arm L3 from the basic curved dent 771 to the peripheral of the annular positioning protrusion 76 in the diaphragm membrane 70 is also obtained in the operation of the present invention (as shown in FIG. 53 and enlarged view of association)

Thus, the newly devised contrivances of pump head body 60 and diaphragm membrane 70 not only have significant effect in reducing vibration as well but also enhance the un-displaceable steadiness in maintenance the length of moment arm L2.

Referring to FIGS. 54 through 60, they are illustrative figures for the fourth exemplary embodiment of vibration-reducing structure for five-compressing-chamber diaphragm pump.

An integral dented ring 601 is circum-disposed around each said operating hole 61 in the pump head body 60 (as shown in FIGS. 54 through 56) while an integral protruded ring 701 is circum-disposed around each said annular positioning protrusion 76 in the diaphragm membrane 70 in corresponding position with each mating integral dented ring 601 in the pump head body 60 (as shown in FIGS. 58 and 59).

Thereby, each integral protruded ring 701 at the bottom side of the diaphragm membrane 70 completely inserts into each corresponding integral dented ring 601 at the upper side of the pump head body 60 upon assembly of the pump head body 60 and the diaphragm membrane 70 (as shown in FIG. 60).

Moreover, a short length of moment arm L2 from the integral protruded ring 701 to the peripheral of the annular positioning protrusion 76 in the diaphragm membrane 70 is obtained in the operation of the present invention (as shown in FIG. 60 and enlarged view of association).

Thus, the newly devised contrivances of pump head body 60 and diaphragm membrane 70 not only have significant effect in reducing vibration as well but also enhance the un-displaceable steadiness in maintenance the length of moment arm L2 for resisting against the acting force F on the eccentric roundel 52.

As shown in FIGS. 61 and 62, in the fourth exemplary embodiment, each integral dented ring 601 of the pump head body 60 can be adapted into an integral perforated ring 600.

As shown in FIGS. 63 and 64, in the fourth exemplary embodiment, each integral dented ring 601 in the pump head body 60 (as shown in FIGS. 54 to 56) and each corresponding integral protruded ring 701 in the diaphragm membrane 70 (as shown in FIGS. 58 and 59) can be exchanged into an integral protruded ring 610 in the pump head body 60 (as shown in FIG. 63) and a corresponding integral dented ring 710 in the diaphragm membrane 70 (as shown in FIG. 63) without affecting their mating condition.

Thereby, each integral protruded ring 610 at the upper side of the pump head body 60 completely inserts into each corresponding integral dented ring 710 at the bottom side of the diaphragm membrane 70 upon assembly of the pump head body 60 and the diaphragm membrane 70 (as shown in FIG. 64).

Moreover, a short length of moment arm L3 from the integral dented ring 710 to the peripheral of the annular positioning protrusion 76 in the diaphragm membrane 70 is also obtained in the operation of the present invention (as shown in FIG. 64 and enlarged view of association) so that the newly devised contrivances of pump head body 60 and diaphragm membrane 70 have significant effect in reducing vibration as well.

Referring to FIGS. 65 through 71, they are illustrative figures for the fifth exemplary embodiment of vibration-reducing structure for five-compressing-chamber diaphragm pump in the present invention.

A group of curved dents 602 are circum-disposed around each said operating hole 61 in the pump head body 60 (as shown in FIGS. 65 through 67) while a group of curved protrusions 702 are circum-disposed around each said annular positioning protrusion 76 in the diaphragm membrane 70 in corresponding position with each group of mating curved dents 602 in the pump head body 60 (as shown in FIGS. 69 and 70).

Thereby, each group of curved protrusions 702 at the bottom side of the diaphragm membrane 70 completely insert into each corresponding group of curved dents 602 at the upper side of the pump head body 60 upon assembly of the pump head body 60 and the diaphragm membrane 70 (as shown in FIG. 71).

Moreover, a short length of moment arm L2 from the curved protrusion 702 to the peripheral of the annular positioning protrusion 76 in the diaphragm membrane 70 is obtained in the operation of the present invention (as shown in FIG. 71 and enlarged view of association).

Thus, the newly devised contrivances of pump head body 60 and diaphragm membrane 70 not only have significant effect in reducing vibration as well.

As shown in FIGS. 72 and 73, in the fifth exemplary embodiment, each group of curved dents 602 of the pump head body 60 can be adapted into a group of curved slits 611.

As shown in FIGS. 74 and 75, in the fifth exemplary embodiment, each group of curved dents 602 in the pump head body 60 (as shown in FIGS. 65 to 67) and each corresponding group of curved protrusions 702 in the diaphragm membrane 70 (as shown in FIGS. 69 and 70) can be exchanged into a group of curved protrusions 620 in the pump head body 60 (as shown in FIG. 74) and a group of corresponding curved dents 720 in the diaphragm membrane 70 (as shown in FIG. 74) without affecting their mating condition.

Thereby, each group of curved protrusions 620 at the upper side of the pump head body 60 completely insert into each group of corresponding curved dents 720 at the bottom side of the diaphragm membrane 70 upon assembly of the pump head body 60 and the diaphragm membrane 70 (as shown in FIG. 75).

Moreover, a short length of moment arm L3 from the curved dents 720 to the peripheral of the annular positioning protrusion 76 in the diaphragm membrane 70 is also obtained in the operation of the present invention (as shown in FIG. 75 and enlarged view of association) so that the newly devised contrivances of pump head body 60 and diaphragm membrane 70 have significant effect in reducing vibration as well.

Referring to FIGS. 76 through 82, they are illustrative figures for the sixth exemplary embodiment of “vibration-reducing structure for five-compressing-chamber diaphragm pump” in the present invention.

A group of round dents 603 are circum-disposed around each said operating hole 61 in the pump head body 60 (as shown in FIGS. 76 through 78) while a group of round protrusions 703 are circum-disposed around each said annular positioning protrusion 76 in the diaphragm membrane 70 in corresponding position with each group of mating round dents 603 in the pump head body 60 (as shown in FIGS. 80 and 81).

Thereby, each group of round protrusions 703 at the bottom side of the diaphragm membrane 70 completely insert into each corresponding group of round dents 603 at the upper side of the pump head body 60 upon assembly of the pump head body 60 and the diaphragm membrane 70 (as shown in FIG. 82).

Moreover, a short length of moment arm L2 from the round protrusion 703 to the peripheral of the annular positioning protrusion 76 in the diaphragm membrane 70 is obtained in the operation of the present invention (as shown in FIG. 82 and enlarged view of association).

Thus, the newly devised contrivances of pump head body 60 and diaphragm membrane 70 not only have significant effect in reducing vibration as well but also enhance the un-displaceable steadiness in maintenance the length of moment arm L2.

As shown in FIGS. 83 and 84, in the sixth exemplary embodiment, each group of round dents 603 in the pump head body 60 can be adapted into a group of round holes 612.

As shown in FIGS. 85 and 86, in the sixth exemplary embodiment, each group of round dents 603 in the pump head body 60 (as shown in FIGS. 76 to 78) and each corresponding group of round protrusions 703 in the diaphragm membrane 70 (as shown in FIGS. 80 and 81) can be exchanged into a group of round protrusions 630 in the pump head body 60 (as shown in FIG. 85) and a group of corresponding round dents 730 in the diaphragm membrane 70 (as shown in FIG. 85) without affecting their mating condition.

Thereby, each group of round protrusions 630 at the upper side of the pump head body 60 completely insert into each group of corresponding round dents 730 at the bottom side of the diaphragm membrane 70 upon assembly of the pump head body 60 and the diaphragm membrane 70 (as shown in FIG. 86).

Moreover, a short length of moment arm L3 from the round dents 730 to the peripheral of the annular positioning protrusion 76 in the diaphragm membrane 70 is also obtained in the operation of the present invention (as shown in FIG. 86 and enlarged view of association) so that the newly devised contrivances of pump head body 60 and diaphragm membrane 70 have significant effect in reducing vibration as well.

Referring to FIGS. 87 through 93, they are illustrative figures for the seventh exemplary embodiment of vibration-reducing structure for five-compressing-chamber diaphragm pump in the present invention.

A group of square dents 604 are circum-disposed around each said operating hole 61 in the pump head body 60 (as shown in FIGS. 87 through 89) while a group of square protrusions 704 are circum-disposed around each said annular positioning protrusion 76 in the diaphragm membrane 70 in corresponding position with each mating group of square dents 604 in the pump head body 60 (as shown in FIGS. 91 and 92).

Thereby, each group of square protrusions 704 at the bottom side of the diaphragm membrane 70 completely insert into each corresponding group of square dents 604 at the upper side of the pump head body 60 upon assembly of the pump head body 60 and the diaphragm membrane 70 (as shown in FIG. 93).

Moreover, a short length of moment arm L2 from the square protrusions 704 to the peripheral of the annular positioning protrusion 76 in the diaphragm membrane 70 is obtained in the operation of the present invention (as shown in FIG. 93 and enlarged view of association).

Thus, the newly devised contrivances of pump head body 60 and diaphragm membrane 70 not only have significant effect in reducing vibration as well but also enhance the un-displaceable steadiness in maintenance the length of moment arm L2.

As shown in FIGS. 94 and 95, in the seventh exemplary embodiment, each group of square dents 604 in the pump head body 60 can be adapted into a group of square holes 613.

As shown in FIGS. 96 and 97 in the seventh exemplary embodiment, each group of square dents 604 in the pump head body 60 (as shown in FIGS. 87 to 89) and each corresponding group of square protrusions 704 in the diaphragm membrane 70 (as shown in FIGS. 91 and 92) can be exchanged into a group of square protrusions 640 in the pump head body 60 (as shown in FIG. 96) and a group of corresponding square dents 740 in the diaphragm membrane 70 (as shown in FIG. 96) without affecting their mating condition.

Thereby, each group of square protrusions 640 at the upper side of the pump head body 60 completely insert into each group of corresponding square dents 740 at the bottom side of the diaphragm membrane 70 upon assembly of the pump head body 60 and the diaphragm membrane 70 (as shown in FIG. 97).

Moreover, a short length of moment arm L3 from the square dents 740 to the peripheral of the annular positioning protrusion 76 in the diaphragm membrane 70 is also obtained in the operation of the present invention (as shown in FIG. 97 and enlarged view of association) so that the newly devised contrivances of pump head body 60 and diaphragm membrane 70 have significant effect in reducing vibration as well.

Referring to FIGS. 98 through 102, they are illustrative figures for the eighth exemplary embodiment of vibration-reducing structure for five-compressing-chamber diaphragm pump in the present invention.

An integral dented ring 601 is circum-disposed around the upper side of each operating hole 61 and a linking five-curved dent 68 is disposed to encompass all five integral dented rings 601 in the pump head body 60 (as shown in FIGS. 98 and 99) while an integral protruded ring 701 is circum-disposed around each concentric annular positioning protrusion 76 and a linking five-curved protrusion 79 is disposed to encompass all five integral protruded rings 701 at the bottom side of the diaphragm membrane 70 in corresponding position with the mating linking five-curved dent 68 and four integral dented rings 601 in the pump head body 60 (as shown in FIGS. 100 and 101).

Thereby, the linking five-curved protrusion 79 and five integral protruded rings 701 at the bottom side of the diaphragm membrane 70 completely insert into the corresponding linking five-curved dent 68 and five integral dented rings 601 at the upper side of the pump head body 60 upon assembly of the pump head body 60 and the diaphragm membrane 70 (as shown in FIG. 102).

Moreover, a short length of moment arm L2 from the integral protruded ring 701 to the peripheral of the annular positioning protrusion 76 in the diaphragm membrane 70 is obtained in the operation of the present invention (as shown in FIG. 102 and enlarged view of association).

Thus, the newly devised contrivances of pump head body 60 and diaphragm membrane 70 not only have significant effect in reducing vibration but also enhance the un-displaceable steadiness in maintenance the length of moment arm L2 for resisting against the acting force F on the eccentric roundel 52.

As shown in FIGS. 103 and 104, in the eighth exemplary embodiment, the linking five-curved dent 68 and five integral dented rings 601 in the pump head body 60 can be adapted into a linking five-curved slit 641 and five integral perforated rings 600.

As shown in FIGS. 105 and 106, in the eighth exemplary embodiment, the linking five-curved dent 68 and four integral dented rings 601 in the pump head body 60 (as shown in FIGS. 98 and 99) and the corresponding linking five-curved protrusion 79 and five integral protruded rings 701 in the diaphragm membrane 70 (as shown in FIGS. 100 and 101) can be exchanged into a linking five-curved protrusion 681 and five integral protruded rings 610 in the pump head body 60 (as shown in FIG. 105) and a corresponding linking five-curved dent 791 and five integral dented rings 710 in the diaphragm membrane 70 (as shown in FIG. 105) without affecting their mating condition.

Thereby, the linking five-curved protrusion 681 and five integral protruded rings 610 at the upper side of the pump head body 60 completely insert into the corresponding linking five-curved dent 791 and five integral dented rings 710 at the bottom side of the diaphragm membrane 70 upon assembly of the pump head body 60 and the diaphragm membrane 70 (as shown in FIG. 106).

Moreover, a short length of moment arm L3 from the integral dented ring 710 to the peripheral of the annular positioning protrusion 76 in the diaphragm membrane 70 is also obtained in the operation of the present invention (as shown in FIG. 106 and enlarged view of association).

Thus, the newly devised contrivances of pump head body 60 and diaphragm membrane 70 have significant effect in reducing vibration as well.

Basing on the disclosure heretofore, the conclusion is that the present invention substantially achieves the vibration reducing effect of five-compressing-chamber diaphragm pump by means of simple newly devised pump head body 60 and diaphragm membrane 70 without increasing overall cost. The present invention surely solves all issues of the harassing noise and “resonant shakes” incurred by the primary “vibrating drawback in the conventional five-compressing-chamber diaphragm pump, which has valuable industrial applicability. Especially, the present invention is simple with innovative novelty beyond the obviousness of the prior arts, which meet the basic patentable criterion. Accordingly, we submit the patent application to you for perusal in accordance with related patent laws.

Claims

1. A vibration-reducing structure for five-compressing-chamber diaphragm pump comprises a motor with an output shaft, a motor upper chassis, a wobble plate with integral protruding cam-lobed shaft, an eccentric roundel mount, a pump head body, a diaphragm membrane, five pumping pistons, a piston valvular assembly and a pump head cover, wherein: Said motor upper chassis includes a bearing to be run through by the output shaft of the motor, an upper annular rib ring with several fastening bores disposed therein in circumferential rim evenly;Said wobble plate with integral protruding cam-lobed shaft includes a shaft coupling hole run through by the corresponding motor output shaft of the motor;Said eccentric roundel mount includes a central bearing at the bottom thereof for corresponding wobble plate with integral protruding cam-lobed shaft, five-eccentric roundels disposed thereon in circumferential location evenly such that each eccentric roundel has a screw-threaded bore and an annular positioning dent formed on the top face thereof respectively in horizontal flush;Said pump head body, which covers on the upper annular rib ring of the motor upper chassis to encompass the wobble plate with integral protruding cam-lobed shaft and eccentric roundel mount therein, includes five operating holes disposed therein in circumferential location evenly such that each operating hole has inner diameter slightly bigger than outer diameter of the eccentric roundel in the eccentric roundel mount for receiving each corresponding eccentric roundel respectively, a lower annular flange formed thereunder for mating with corresponding upper annular rib ring of the motor upper chassis, several fastening bores disposed thereat in circumferential location evenly;Said diaphragm membrane, which is extrude-molded by semi-rigid elastic material and to be placed on the pump head body, includes a pair of parallel outer raised brim and inner raised brim as well as five evenly spaced radial raised partition ribs such that each end of radial raised partition rib connects with the joint of two adjacent inner raised brims, five equivalent piston acting zones are formed and partitioned by the radial raised partition ribs, wherein each piston acting zone has an acting zone hole created therein in correspondence with each screw-threaded bore in the screw-threaded bore of the eccentric roundel mount respectively, and an annular positioning protrusion for each acting zone hole is formed at the bottom side of the diaphragm membrane;Each said pumping piston, which is respectively disposed in each corresponding piston acting zones of the diaphragm membrane, has a tiered hole run through thereof, by running fastening screw through the tiered hole of each pumping piston and the acting zone hole of each corresponding piston acting zone in the diaphragm membrane, the diaphragm membrane and five pumping pistons are securely screwed into each screw-threaded bore of corresponding five eccentric roundels in the eccentric roundel mount;Said piston valvular assembly, which suitably covers on the diaphragm membrane, includes a downward outlet raised brim to insert between the outer raised brim and inner raised brim in the diaphragm membrane, a central round outlet mount composed of a central positioning bore with five equivalent sectors such that each of sectors contains a group of multiple evenly circum-located outlet ports, a T-shaped plastic anti-backflow valve with a central positioning shank, and five circumjacent inlet mounts such that each of which includes a group of multiple evenly circum-located inlet ports and a inverted central piston disk respectively so that each piston disk serves as a valve for each corresponding group of multiple inlet ports, wherein the central positioning shank of the plastic anti-backflow valve mates with the central positioning bore of the central outlet mount such that each group of multiple outlet ports of each sector in the central round outlet mount are communicable with each corresponding inlet mount, and a hermetical preliminary-compressing chamber is formed between each inlet mount and each corresponding piston acting zone in the diaphragm membrane upon the downward outlet raised brim having inserted between the outer raised brim and inner raised brim in the diaphragm membrane such that one end of each preliminary-compressing chamber is communicable with each corresponding group of multiple inlet ports;Said pump head cover, which covers on the pump head body to encompass the piston valvular assembly, pumping piston and diaphragm membrane therein, includes a water inlet orifice, a water outlet orifice, and several fastening bores while a tiered rim and an annular rib ring are disposed in the bottom inside of said pump head cover such that the outer brim for the assembly of diaphragm membrane and piston valvular assembly can hermetically attach on the tiered rim upon the piston valvular assembly having covered the diaphragm membrane closely, wherein a high-compressing chamber is created between the inside cavity of the annular rib ring and the central outlet mount of the piston valvular assembly upon having the bottom of the annular rib ring closely covered on the brim of the central outlet mount; andCharacteristically, a basic curved dent is further circum-disposed around the upper side of each operating hole in the pump head body while a basic curved protrusion is further circum-disposed around each concentric annular positioning protrusion at the bottom side of the diaphragm membrane in corresponding position with each mating basic curved dent in the pump head body so that each basic curved protrusion at the bottom side of the diaphragm membrane completely inserts into each corresponding basic curved dent at the upper side of the pump head body upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the basic curved protrusions to the peripheral of the annular positioning protrusion in the diaphragm membrane is obtained.

2. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 1, wherein each basic curved dent of the pump head body is adapted into a basic curved bore.

3. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 1, wherein each basic curved dent in the pump head body and each corresponding basic curved protrusion in the diaphragm membrane are exchanged into a basic curved protrusion in the pump head body and a corresponding basic curved dent in the diaphragm membrane without affecting their mating condition so that each basic curved protrusion at the upper side of the pump head body completely inserts into each corresponding basic curved dent at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the basic curved dent to the peripheral of the annular positioning protrusion in the diaphragm membrane is obtained.

4. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 1, wherein each basic curved dent in the pump head body is adapted into a linking five-curved dent to encompass all five operating hole while each corresponding basic curved protrusion in the diaphragm membrane is adapted into a linking five-curved protrusion in corresponding position with the linking four-curved dent in the pump head body to encompass all four annular positioning protrusions.

5. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 4, wherein each linking five-curved dent of the pump head body 60 is adapted into a linking five-curved slit.

6. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 4, wherein the linking five-curved dent in the pump head body and the corresponding linking five-curved protrusion in the diaphragm membrane are exchanged into a linking five-curved protrusion in the pump head body and a linking five-curved dent in the diaphragm membrane without affecting their mating condition so that the linking five-curved protrusion at the upper side of the pump head body completely inserts into the linking five-curved dent at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the linking five-curved dent to the peripheral of the annular positioning protrusion in the diaphragm membrane is obtained.

7. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 1, wherein a second outer curved dent is further circum-disposed around each said basic curved dent in the pump head body while a second outer curved protrusion is further circum-disposed around each said basic curved protrusion in the diaphragm membrane in corresponding position with each mating second outer curved dent in the pump head body.

8. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 7, wherein each pair of basic curved dent and second outer curved dent of the pump head body are adapted into a pair of basic curved bore and second outer curved bore.

9. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 7, wherein each pair of basic curved dent and second outer curved dent in the pump head body and each corresponding pair of basic curved protrusion and second outer curved protrusion in the diaphragm membrane are exchanged into a pair of basic curved protrusion and second outer curved protrusion in the pump head body and a pair of corresponding basic curved dent and second outer curved dent in the diaphragm membrane without affecting their mating condition so that each pair of basic curved protrusion and second outer curved protrusion at the upper side of the pump head body completely insert into each corresponding pair of basic curved dent and second outer curved dent at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the basic curved dent to the peripheral of the annular positioning protrusion in the diaphragm membrane is also obtained

10. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 1, wherein an integral dented ring is further circum-disposed around each said operating hole in the pump head body while an integral protruded ring is further circum-disposed around each said annular positioning protrusion in the diaphragm membrane in corresponding position with each mating integral dented ring in the pump head body.

11. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 10, wherein each integral dented ring of the pump head body is adapted into an integral perforated ring.

12. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 10, wherein each integral dented ring in the pump head body and each corresponding integral protruded ring in the diaphragm membrane are exchanged into an integral protruded ring in the pump head body and a corresponding integral dented ring in the diaphragm membrane without affecting their mating condition so that each integral protruded ring at the upper side of the pump head body completely inserts into each corresponding integral dented ring at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane as well as a short length of moment arm from the integral dented ring to the peripheral of the annular positioning protrusion in the diaphragm membrane is also obtained.

13. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 1, wherein a group of curved dents are circum-disposed around each said operating hole in the pump head body while a group of curved protrusions are circum-disposed around each said annular positioning protrusion in the diaphragm membrane in corresponding position with each group of mating curved dents in the pump head body.

14. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 13, wherein each group of curved dents of the pump head body are adapted into a group of curved slits.

15. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 13, wherein each group of curved dents in the pump head body and each corresponding group of curved protrusions in the diaphragm membrane are exchanged into a group of curved protrusions in the pump head body and a group of corresponding curved dents in the diaphragm membrane without affecting their mating condition so that each group of curved protrusions at the upper side of the pump head body completely insert into each group of corresponding curved dents at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the curved dents to the peripheral of the annular positioning protrusion in the diaphragm membrane is also obtained.

16. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 1, wherein a group of round dents are circum-disposed around each said operating hole in the pump head body while a group of round protrusions are circum-disposed around each said annular positioning protrusion in the diaphragm membrane in corresponding position with each group of mating round dents in the pump head body.

17. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 16, wherein each group of round dents in the pump head body are adapted into a group of round holes.

18. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 16, wherein each group of round dents in the pump head body and each corresponding group of round protrusions in the diaphragm membrane are exchanged into a group of round protrusions in the pump head body and a group of corresponding round dents in the diaphragm membrane without affecting their mating condition so that each group of round protrusions at the upper side of the pump head body completely insert into each group of corresponding round dents at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the round dents to the peripheral of the annular positioning protrusion in the diaphragm membrane is also obtained.

19. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 1, wherein a group of square dents are circum-disposed around each said operating hole in the pump head body while a group of square protrusions are circum-disposed around each said annular positioning protrusion in the diaphragm membrane in corresponding position with each mating group of square dents in the pump head body.

20. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 19, wherein each group of square dents in the pump head body are adapted into a group of square holes.

21. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 19, wherein each group of square dents in the pump head body and each corresponding group of square protrusions in the diaphragm membrane are exchanged into a group of square protrusions in the pump head body and a group of corresponding square dents in the diaphragm membrane without affecting their mating condition so that each group of square protrusions at the upper side of the pump head body completely insert into each group of corresponding square dents at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the square dents to the peripheral of the annular positioning protrusion in the diaphragm membrane is also obtained.

22. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 1, wherein an integral dented ring is circum-disposed around the upper side of each operating hole and a linking five-curved dent is disposed to encompass all five integral dented rings in the pump head body while an integral protruded ring is circum-disposed around each concentric annular positioning protrusion and a linking five-curved protrusion is disposed to encompass all five integral protruded rings at the bottom side of the diaphragm membrane in corresponding position with the mating linking five-curved dent and five integral dented rings in the pump head body.

23. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 22, wherein said linking five-curved dent and five integral dented rings in the pump head body are adapted into a linking five-curved slit and five integral perforated rings.

24. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 22, wherein said linking five-curved dent and five integral dented rings in the pump head body and the corresponding linking five-curved protrusion and five integral protruded rings in the diaphragm membrane are exchanged into a linking five-curved protrusion and five integral protruded rings in the pump head body and a corresponding linking five-curved dent and five integral dented rings in the diaphragm membrane without affecting their mating condition so that the linking five-curved protrusion and five integral protruded rings at the upper side of the pump head body completely insert into the corresponding linking five-curved dent and five integral dented rings at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the integral dented ring to the peripheral of the annular positioning protrusion in the diaphragm membrane is also obtained.

25. A vibration-reducing structure for five-compressing-chamber diaphragm pump comprises a motor with an output shaft, a motor upper chassis, a wobble plate with integral protruding cam-lobed shaft, an eccentric roundel mount, a pump head body, a diaphragm membrane, five pumping pistons, a piston valvular assembly and a pump head cover, wherein Said motor upper chassis includes a bearing to be run through by the output shaft of the motor, an upper annular rib ring with several fastening bores disposed therein in circumferential rim evenly;Said wobble plate with integral protruding cam-lobed shaft includes a shaft coupling hole run through by the corresponding motor output shaft of the motor;Said eccentric roundel mount includes a central bearing at the bottom thereof for corresponding wobble plate with integral protruding cam-lobed shaft, five-eccentric roundels disposed thereon in circumferential location evenly such that each eccentric roundel has a screw-threaded bore and an annular positioning dent formed on the top face thereof respectively in horizontal flush;Said pump head body, which covers on the upper annular rib ring of the motor upper chassis to encompass the wobble plate with integral protruding cam-lobed shaft and eccentric roundel mount therein, includes five operating holes disposed therein in circumferential location evenly such that each operating hole has inner diameter slightly bigger than outer diameter of the eccentric roundel in the eccentric roundel mount for receiving each corresponding eccentric roundel respectively, a lower annular flange formed thereunder for mating with corresponding upper annular rib ring of the motor upper chassis, several fastening bores disposed thereat in circumferential location evenly;Said diaphragm membrane, which is extrude-molded by semi-rigid elastic material and to be placed on the pump head body, includes a pair of parallel outer raised brim and inner raised brim as well as five evenly spaced radial raised partition ribs such that each end of radial raised partition rib connects with the joint of two adjacent inner raised brims, five equivalent piston acting zones are formed and partitioned by the radial raised partition ribs, wherein each piston acting zone has an acting zone hole created therein in correspondence with each screw-threaded bore in the screw-threaded bore of the eccentric roundel mount respectively, and an annular positioning protrusion for each acting zone hole is formed at the bottom side of the diaphragm membrane;Each said pumping piston, which is respectively disposed in each corresponding piston acting zones of the diaphragm membrane, has a tiered hole run through thereof, by running fastening screw through the tiered hole of each pumping piston and the acting zone hole of each corresponding piston acting zone in the diaphragm membrane, the diaphragm membrane and five pumping pistons are securely screwed into each screw-threaded bore of corresponding five eccentric roundels in the eccentric roundel mount;Said piston valvular assembly includes a downward outlet raised brim to insert between the outer raised brim and inner raised brim in the diaphragm membrane, a central round outlet mount, five equivalent sector zones evenly distributed in the outlet mount such that each of sectors composed of a zone positioning bore, a T-shaped zone anti-backflow valve with a zone positioning shank as well as a group of multiple evenly circum-located outlet ports around each corresponding zone positioning bore, and five circumjacent inlet mounts such that each of which includes a group of multiple evenly circum-located inlet ports and a inverted central piston disk respectively so that each piston disk serves as a valve for each corresponding group of multiple inlet ports, wherein each zone positioning shank of the zone anti-backflow valve mates with the zone positioning bore of the central outlet mount such that each group of multiple outlet ports of each sector zone in the central round outlet mount are communicable with each corresponding inlet mount, and a hermetical preliminary-compressing chamber is formed between each inlet mount and each corresponding piston acting zone in the diaphragm membrane upon the downward outlet raised brim having inserted between the outer raised brim and inner raised brim in the diaphragm membrane such that one end of each preliminary-compressing chamber is communicable with each corresponding group of multiple inlet ports;Said pump head cover, which covers on the pump head body to encompass the piston valvular assembly, pumping piston and diaphragm membrane therein, includes a water inlet orifice, a water outlet orifice, and several fastening bores while a tiered rim and an annular rib ring are disposed in the bottom inside of said pump head cover such that the outer brim for the assembly of diaphragm membrane and piston valvular assembly hermetically attaches on the tiered rim, wherein a high-pressured water chamber is configured between cavity formed by the inside wall of the annular rib ring and the central outlet mount of the piston valvular assembly by means of matching the bottom of the annular rib ring on the brim of the central outlet mount; andCharacteristically, a basic curved dent is further circum-disposed around the upper side of each operating hole in the pump head body while a basic curved protrusion is further circum-disposed around each concentric annular positioning protrusion at the bottom side of the diaphragm membrane in corresponding position with each mating basic curved dent in the pump head body so that each basic curved protrusion at the bottom side of the diaphragm membrane completely inserts into each corresponding basic curved dent at the upper side of the pump head body upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the basic curved protrusions to the peripheral of the annular positioning protrusion in the diaphragm membrane is obtained.

26. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 25, wherein each basic curved dent of the pump head body is adapted into a basic curved bore.

27. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 25, wherein each basic curved dent in the pump head body and each corresponding basic curved protrusion in the diaphragm membrane are exchanged into a basic curved protrusion in the pump head body and a corresponding basic curved dent in the diaphragm membrane without affecting their mating condition so that each basic curved protrusion at the upper side of the pump head body completely inserts into each corresponding basic curved dent at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the basic curved dent to the peripheral of the annular positioning protrusion in the diaphragm membrane is obtained.

28. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 25, wherein each basic curved dent in the pump head body is adapted into a linking five-curved dent to encompass all five operating hole while each corresponding basic curved protrusion in the diaphragm membrane is adapted into a linking five-curved protrusion in corresponding position with the linking four-curved dent in the pump head body to encompass all four annular positioning protrusions.

29. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 28, wherein each linking five-curved dent of the pump head body 60 is adapted into a linking five-curved slit.

30. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 28, wherein the linking five-curved dent in the pump head body and the corresponding linking five-curved protrusion in the diaphragm membrane are exchanged into a linking five-curved protrusion in the pump head body and a linking five-curved dent in the diaphragm membrane without affecting their mating condition so that the linking five-curved protrusion at the upper side of the pump head body completely inserts into the linking five-curved dent at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the linking five-curved dent to the peripheral of the annular positioning protrusion in the diaphragm membrane is obtained.

31. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 25, wherein a second outer curved dent is further circum-disposed around each said basic curved dent in the pump head body while a second outer curved protrusion is further circum-disposed around each said basic curved protrusion in the diaphragm membrane in corresponding position with each mating second outer curved dent in the pump head body.

32. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 31, wherein each pair of basic curved dent and second outer curved dent of the pump head body are adapted into a pair of basic curved bore and second outer curved bore.

33. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 31, wherein each pair of basic curved dent and second outer curved dent in the pump head body and each corresponding pair of basic curved protrusion and second outer curved protrusion in the diaphragm membrane are exchanged into a pair of basic curved protrusion and second outer curved protrusion in the pump head body and a pair of corresponding basic curved dent and second outer curved dent in the diaphragm membrane without affecting their mating condition so that each pair of basic curved protrusion and second outer curved protrusion at the upper side of the pump head body completely insert into each corresponding pair of basic curved dent and second outer curved dent at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the basic curved dent to the peripheral of the annular positioning protrusion in the diaphragm membrane is also obtained

34. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 25, wherein an integral dented ring is further circum-disposed around each said operating hole in the pump head body while an integral protruded ring is further circum-disposed around each said annular positioning protrusion in the diaphragm membrane in corresponding position with each mating integral dented ring in the pump head body.

35. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 34, wherein each integral dented ring of the pump head body is adapted into an integral perforated ring.

36. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 34, wherein each integral dented ring in the pump head body and each corresponding integral protruded ring in the diaphragm membrane are exchanged into an integral protruded ring in the pump head body and a corresponding integral dented ring in the diaphragm membrane without affecting their mating condition so that each integral protruded ring at the upper side of the pump head body completely inserts into each corresponding integral dented ring at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane as well as a short length of moment arm from the integral dented ring to the peripheral of the annular positioning protrusion in the diaphragm membrane is also obtained.

37. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 25, wherein a group of curved dents are circum-disposed around each said operating hole in the pump head body while a group of curved protrusions are circum-disposed around each said annular positioning protrusion in the diaphragm membrane in corresponding position with each group of mating curved dents in the pump head body.

38. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 37, wherein each group of curved dents of the pump head body are adapted into a group of curved slits.

39. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 37, wherein each group of curved dents in the pump head body and each corresponding group of curved protrusions in the diaphragm membrane are exchanged into a group of curved protrusions in the pump head body and a group of corresponding curved dents in the diaphragm membrane without affecting their mating condition so that each group of curved protrusions at the upper side of the pump head body completely insert into each group of corresponding curved dents at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the curved dents to the peripheral of the annular positioning protrusion in the diaphragm membrane is also obtained.

40. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 25, wherein a group of round dents are circum-disposed around each said operating hole in the pump head body while a group of round protrusions are circum-disposed around each said annular positioning protrusion in the diaphragm membrane in corresponding position with each group of mating round dents in the pump head body.

41. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 40, wherein each group of round dents in the pump head body are adapted into a group of round holes.

42. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 40, wherein each group of round dents in the pump head body and each corresponding group of round protrusions in the diaphragm membrane are exchanged into a group of round protrusions in the pump head body and a group of corresponding round dents in the diaphragm membrane without affecting their mating condition so that each group of round protrusions at the upper side of the pump head body completely insert into each group of corresponding round dents at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the round dents to the peripheral of the annular positioning protrusion in the diaphragm membrane is also obtained.

43. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 25, wherein a group of square dents are circum-disposed around each said operating hole in the pump head body while a group of square protrusions are circum-disposed around each said annular positioning protrusion in the diaphragm membrane in corresponding position with each mating group of square dents in the pump head body.

44. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 43, wherein each group of square dents in the pump head body are adapted into a group of square holes.

45. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 43, wherein each group of square dents in the pump head body and each corresponding group of square protrusions in the diaphragm membrane are exchanged into a group of square protrusions in the pump head body and a group of corresponding square dents in the diaphragm membrane without affecting their mating condition so that each group of square protrusions at the upper side of the pump head body completely insert into each group of corresponding square dents at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the square dents to the peripheral of the annular positioning protrusion in the diaphragm membrane is also obtained.

46. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 25, wherein an integral dented ring is circum-disposed around the upper side of each operating hole and a linking five-curved dent is disposed to encompass all five integral dented rings in the pump head body while an integral protruded ring is circum-disposed around each concentric annular positioning protrusion and a linking five-curved protrusion is disposed to encompass all five integral protruded rings at the bottom side of the diaphragm membrane in corresponding position with the mating linking five-curved dent and five integral dented rings in the pump head body.

47. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 46, wherein said linking five-curved dent and five integral dented rings in the pump head body are adapted into a linking five-curved slit and five integral perforated rings.

48. The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in claim 46, wherein said linking five-curved dent and five integral dented rings in the pump head body and the corresponding linking five-curved protrusion and five integral protruded rings in the diaphragm membrane are exchanged into a linking five-curved protrusion and five integral protruded rings in the pump head body and a corresponding linking five-curved dent and five integral dented rings in the diaphragm membrane without affecting their mating condition so that the linking five-curved protrusion and five integral protruded rings at the upper side of the pump head body completely insert into the corresponding linking five-curved dent and five integral dented rings at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the integral dented ring to the peripheral of the annular positioning protrusion in the diaphragm membrane is also obtained.