1. Field of the Invention
This invention relates to a driving device for an air compressor, particularly to one having a base, a main gear fixed on the base and engaging with a subordinate gear, a weight fixed on the shaft of the subordinate gear, and a driving arm connected with eccentrically with the weight. When a motor is powered, the main gear and the subordinated gear are orderly rotated to let the weight rotate so that the driving arm may eccentrically be moved so that a piston formed at one end of the driving arm and contained in an cylinder member to reciprocate for pushing out a large amount of compressed air.
2. Description of the Prior Art
A conventional air compressor shown in
When the motor 90 is powered, the main gear 92 is rotated and then the subordinate gear 93 is then rotated accordingly, moving the piston rod 95 with the piston 96 up and down. Then the piston 96 sucks in air during down movement in the air cylinder 97 and then into the air cylinder 97 through the inlet valve 98, and compresses out air in the air cylinder 97 through the outlet valve 99 during up movement therein.
However, in the conventional air compressor the piston 96 generates sucking force during down movement, sucking outer air into the air cylinder 97 in a limited amount, and then presses out air in the air cylinder 97 through the outlet valve 99, but the driving distance and force of the piston rod 95 is comparatively small, and accordingly the air amount compressed out is also comparatively small, not ideal in the inlet and outlet amount of air.
This invention has been devised to offer a driving device for an air compressor, which is possible to produce a large amount of air pressure to obtain preferable intake and outgo of air pressure.
The feature of the invention is a motor, a main gear, a subordinate gear, a weight fixed on a shaft, and a driving arm having a piston at an end, and a air cylinder and a cylindrical member combined together. The motor is combined with a rear side of a base, having a spindle, and the main gear is fixed on the spindle and engaging with the subordinate gear fixed on the shaft, which the driving arm has its one end combined with. So when the motor is powered, the main and the subordinate gear are rotated together, and then the shaft rotates with the subordinate gear, also rotating the weight and a first end of the driving arm connected eccentrically with the weight so that the piston formed at a second end of the driving arm may be moved to reciprocate back and forth in the cylindrical member to suck in air and compress out air out of the air cylinder to obtain a large amount of compressed air.
This invention will be better understood by referring to the accompanying drawings, wherein:
A preferred embodiment of a driving device for an air compressor in the present invention, as shown in
The motor 10 is fixed with a rear side of the base 1, and the base 1 has a hole 12 for two bearings 13 to fit therein, and a shaft 14 fitted though the two bearings 13.
The main gear 11 is fixed on the spindle of the motor 10, and located in parallel beside the hole 12 of the base 1.
The subordinate gear 2 is fixed on a rear end of the shaft 14 with a screw 20, engaging with the main gear 11 to rotate together.
The weight 3 is preferably fan-shaped, fixed eccentrically on a front end of the shaft 14 at its small end, having a shaft hole 30 and a threaded hole 31 in the small end.
The driving arm 4 has its first end eccentrically connected with the weight 3, having the first end formed with a hole 40, with a bearing 41 fitted in the hole 40 and a screw 42 passing through the bearing 41 and screwing with the weight 3. The driving arm 4 has its second end formed with a piston 43.
The air cylinder 5 is combined laterally with the front end of the base 1 by means of plural bolts 6, provided with a recess 40 in a front portion, an air outlet 51 formed in the recess 40, a disc 52 with a through hole 520 and two gaskets 53 sandwiching the disc 52 fitted in the recess 50. Further, a cylindrical member 54 is provided, having one end fitted stably in the recess 50 and the other end connected with the base 1. The piston 43 of the driving arm 4 is movably contained in the cylindrical member 54.
In using, referring to
When the larger portion of the weight 3 rotates to move to the inner side, the piston 43 moves to the outermost point in the cylindrical member 54, as shown in
As can be seen from the aforesaid description, the engagement and rotation of the main gear 11 and the subordinate 2 gear can force the weight 3 rotate stably and accurately so that the weight 3 can move the first end of the driving arm 4 to let the piston 43 reciprocate in the cylindrical member 54 and compressing a large amount of air for producing the most preferable intake and outgo of compressed air.
While the preferred embodiment of the invention has been described above, it will be recognize and understood that various modifications may be made therein and appended claims are intended to cover all such modifications that may fall within the spirit and scope of the invention.
Number | Date | Country | Kind |
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094109042 | Mar 2005 | TW | national |