Patent Application
20240191706
The invention is related to an inflating device, and more particularly to a press structure for a pump head capable of releasing an air nozzle through pressing for convenient use.
In general air pumps, especially manual air pumps for bicycle tire, in order to increase the airtight effect of the air nozzle and the pump nozzle and to prevent the pump nozzle from ejecting out of the air nozzle due to excessive pressure during the inflation process, a locking device is provided on the pump nozzle of the air pump. The locking device has a cam knob, locking or loosening effect is produced on the locking device through the cam knob, when the locking device is in the locked state, the pump nozzle is tightly inserted into the air nozzle, and can supply air to the air nozzle. At this time, because the air nozzle is fixed, there will be no air leakage or separation between the air nozzle and the pump nozzle due to excessive air pressure of the pump nozzle.
However, the cam knob of the locking device requires a longer force-applying arm in order to facilitate applying of force and rotation, so the overall volume will be relatively increased. Furthermore, through the eccentric acting force of the cam knob, it takes a relatively greater strength to turn the cam knob for locking or loosening, and therefore it is rather difficult for the user to manipulate.
An object of the invention is to provide a press structure for a pump head capable of locking or releasing the pump head by means of a lever.
A press structure for a pump head provided by the invention comprises:
With the above-mentioned design, the hanging arm of the invention can be manipulated by means of a lever. Through positional changes of the clamping end of each of the hanging arms, an air nozzle can be fixed or released, manipulation is simple and does not require too much force. The force-bearing end of the hanging arm is pressed toward the base body, which is ergonomic and easy to apply force, manipulation is done around the base body, thus a user can be prevented from touching external objects and it is easy to manipulate.
Preferably, further comprising at least one pressing member, each of the pressing members is disposed on a side of the force-bearing end of the corresponding hanging arm, each of the pressing members is capable of driving the force-bearing end to move, and each of the elastic members elastically butts against each of the pressing members.
Preferably, further comprising at least one pressing member, each of the pressing members is disposed on a side of the force-bearing end of the corresponding hanging arm, each of the pressing members is capable of driving the force-bearing end to move, and the force-bearing end of each of the hanging arms is provided with each of the elastic members.
Preferably, the elastic member is a spring.
Preferably, each of the pressing members is provided with at least one groove, and a tip of the force-bearing end of each of the hanging arms is accommodated in each of the grooves.
Preferably, the elastic member is integrally formed with each of the pressing members.
Preferably, each of the pressing members is protruded with a position-limiting plate, a chamber is correspondingly disposed on the base body; and the position-limiting plate is accommodated in the chamber.
Preferably, further comprising at least one end cap, each of the end caps is disposed on a periphery of each of the air outlets of the base body, a through hole is formed on each of the end caps and corresponds to the interface of the inflating unit, and each of the hanging arms is disposed between the base body and the end cap.
Preferably, a position-limiting groove is recessed on the outer side of the base body, each of the supporting portions is a supporting groove respectively disposed on an end surface of the air outlet of the base body and located on two sides of the position-limiting groove, two sides of each of the hanging arms are protrudingly provided with connecting ribs respectively, the connecting ribs are pivotally disposed in the supporting grooves, and each of the end caps covers on an outer side of each of the supporting grooves.
Preferably, the base body is provided with an external thread on each of the air outlets, and each of the end caps is provided with an internal thread, so that each of the end caps is screwed on an outer side of each of the air outlets.
Preferably, a position-limiting groove is recessed on the outer side of the base body, each of the supporting portions is a rib protruding in the position-limiting groove, and each of the hanging arms is positioned in the position-limiting groove.
Preferably, a position-limiting groove is recessed on the outer side of the base body, each of the supporting portions is a groove disposed on a side of the position-limiting groove, and each of the hanging arms is protrudingly provided with a connecting rib pivotally disposed in the groove.
Preferably, the base body is provided with the air outlet on at least one side of the air inlet; a hanging arm is provided on one side of each of the air outlets, and the elastic member is provided between each of the hanging arms and the base body.
Preferably, the base body is provided with the air outlet on at least one side of the air inlet; a hanging arm is respectively provided on two sides of each of the air outlets, and the elastic member is provided between each of the hanging arms on a same side and the base body.
Thereby, when an air nozzle is inserted into the interface of the inflating unit from the air outlet end, the clamping end of the hanging arm is capable of gripping the air nozzle at a position of the air outlet, so that the air nozzle can be fixed on the base body. After inflation is completed, it only needs to slightly apply a force to a position of the force-bearing end of the hanging arm, the clamping end will not grip on the air nozzle, so that the air nozzle can be quickly detached from the base body, enabling a user to be capable of quickly fixing or separating the air nozzle.
In order to further understand the objects, features, and achieved efficacies of the invention, five preferred embodiments are described below for detailed explanation in conjunction with the drawings, in which:
Please refer to
The base body 20 is roughly formed in a T-shape, and its interior is a hollow space portion 21. An air inlet 22 is provided at a bottom of the space portion 21 and an air outlet 23 is respectively disposed at two sides of the space portion 21, a blocking portion 231 is disposed around one of the air outlets 23, an aperture of the air outlet 23 with the blocking portion 231 is smaller than an aperture of the other air outlet 23, and an outer side of the base body 20 is concavely provided with two position-limiting grooves 24 along an axial direction of the two air outlets 23. A positioning portion 241 and two positioning posts 242 are respectively disposed on the position-limiting grooves 24 at a central position of the base body 20, and the two positioning posts 242 are located on two sides of the positioning portion 241. A supporting portion 25 is respectively disposed on one side of each of the two position-limiting grooves 24, and the two supporting portions 25 are respectively formed as a supporting groove 252 on sides of the position-limiting grooves 24. The base body 20 is respectively provided with an external thread 26 on an outer ring side of the two air outlets 23, the external thread 26 is higher than the position-limiting groove 24, the base body 20 is provided with a lip 27 protruding from an end of the external thread 26, and the supporting grooves 252 of the supporting portions 25 are respectively recessed on end sides of the lips 27 and located on two sides of the position-limiting grooves 24.
The inflating unit 30 is inserted into the space portion 21 of the base body 20 from an end side of the air outlet 23 with a larger aperture, has two valve plugs 31 respectively disposed on inner sides of the two air outlets 23, an interface 32 is respectively disposed at outer sides of the valve plugs 31 close to the two air outlets 23, and an inflatable groove 311 is respectively disposed on inner sides of the valve plugs 31 around the interfaces 32. The inflating unit 30 is connected with the two valve plugs 31 with a body 33, an air inlet passage 331 is disposed in a middle of the body 33, and an air outlet passage 332 is disposed at two sides of the body 33 respectively. The air inlet passage 331 communicates with the air inlet 22 of the base body 20, the two air outlet passages 332 communicate with the interfaces 32 of the two valve plugs 31 respectively, and the two air outlet passages 332 also communicate with the inflatable grooves 311 of the two valve plugs 31, so that air can be introduced into the air inlet passage 331 through the air inlet 22, and then guided to the air outlets 23 through the air outlet passages 332 to perform inflation. At the same time, the air is partially guided into the inflatable grooves 311 through the air outlet passages 332, after the inflatable grooves 311 are inflated, the valve plugs 31 are inflated and deformed under an action of air pressure. In addition, in order to achieve a good airtight effect, an airtight ring 333 is respectively provided on outer sides of the body 33 on two sides of the air inlet passage 331, and the two airtight rings 333 are capable of ensuring an airtight effect between the base body 20 and the inflating unit 30. The inflating unit 30 is also provided with a fixing member 34, the fixing member 34 is disposed at a position of the air outlet 23 with a larger aperture, an axis of the fixing member 34 is provided with a through hole 341 communicating with the interface 32, and the fixing member 34 can be fixed on the air outlet 23. The inflating unit 30 is a structure of a conventional inflator, which will not be repeated herein, and other similar structures with inflating effect can also be replaced as the inflating unit 30.
Each of the four hanging arms 40 has a force-bearing end 41 and a clamping end 42, the four hanging arms 40 are respectively formed into an L-shaped configuration, and the four hanging arms 40 are disposed in the two position-limiting grooves 24 of the base body 20, so that positions thereof can be fixed and are prevented from moving sideway. Also, a connecting rib 43 is protrudingly provided between the force-bearing end 41 and the clamping end 42 and on two sides of each of the four hanging arms 40, and the connecting ribs 43 can be inserted toward a center of the base body 20 along a direction of the external thread 26 so that the connecting ribs 43 can be inserted into the supporting grooves 252 provided on the lips 27. The force-bearing ends 41 of the hanging arms 40 can be pressed toward a direction of the base body 20 by using the connecting ribs 43 as fulcrums, so that the hanging arms 40 are capable of swinging by using the two connecting ribs 43 as fulcrums, the force-bearing ends 41 of the hanging arms 40 are capable of moving toward a direction of the base body 20, and the clamping ends 42 of the hanging arms 40 are capable of moving away from an axis of the interface 32 (or the air outlet 23) by using the two connecting ribs 43 as axes. The clamping end 42 is disposed on an outer side of the interface 32 of the valve plug 31, when the force-bearing end 41 is pressed, the clamping end 42 displaces away from a direction of the interface 32.
The two pressing member 50 has two grooves 51 and an elastic portion 52, the two grooves 51 are connected to form an annular state, and the two grooves 51 can also be disposed separately without being connected. The two grooves 51 are respectively connected with the force-bearing ends 41 of the two hanging arms 40, so that the force-bearing ends 41 of the two hanging arms 40 can be driven by the pressing member 50 to generate displacement. The elastic portion 52 is integrally formed by the pressing member 50, that is, the pressing member 50 can be made of elastic rubber, and can also be composed of a metal plate concavely bent to have elasticity or a spring. The elastic portion 52 can be accommodated in the positioning portion 241 of the position-limiting groove 24 to be positionally fixed. When the pressing member 50 is pressed toward the base body 20, the elastic portion 52 will relatively generate an elastic force, enabling the pressing member 50 to bounce back in a direction away from the base body 20.
Each of the two end caps 60 has a through hole 61, an internal thread 62 is disposed on an inner side of each of the two end caps 60, and the internal threads 62 of the two end caps 60 are respectively screwed on the two external threads 26 of the base body 20. Since the position-limiting grooves 24 are lower than the external thread 26, when the four hanging arms 40 are installed in the position-limiting grooves 24, the four hanging arms 40 will not be interfered by the two end caps 60, so that the four hanging arms 40 are capable of displacing in the two end caps 60. Also, the clamping ends 42 of the four hanging arms 40 are disposed between the two end caps 60 and the inflating unit 30. After the end cap 60 is screwed on the external thread 26, an end of the end cap 60 butts against the lip 27 of the base body 20, and correspondingly, an opening of the supporting groove 252 will be closed, so that the hanging arms 40 do not fall off easily from the base body 20 after installation.
The four elastic members 70 are respectively disposed on the position-limiting grooves 24 of the base body 20 and the force-bearing ends 41 of the four hanging arms 40, the four elastic members 70 are formed by springs 71, one end of each of the springs 71 is disposed on the positioning post 242 of the position-limiting groove 24, and another end thereof elastically butts against the force-bearing end 41 of the hanging arm 40. When the force-bearing end 41 is pressed toward a direction of the position-limiting groove 24, the spring 71 is capable of producing an elastic restoring force to push the force-bearing end 41 back.
As shown in
After inflation is completed, when the air nozzle A is to be removed from the pump head 10, a user only needs to apply force to press the pressing members 50 so that the pressing members 50 can be pressed toward the base body 20, and the elastic portions 52 will be pressed to generate an elastic restoring force. When the pressing members 50 are pressed, the force-bearing ends 41 of the four hanging arms 40 on two sides of the pressing members 50 will move relatively toward the base body 20. The elastic members 70 are also compressed by being pressed by the force-bearing ends 41 of the hanging arms 40, so that the four hanging arms 40 are capable of rotating by using the connecting ribs 43 as centers. At this time, the clamping ends 42 of the four hanging arms 40 will move relatively away from the interfaces 32 of the inflating unit 30, so that the clamping ends 42 will not grip on the air nozzle A, and the air nozzle A can be pulled out from the interfaces 32 of the inflating unit 30. After pulling out the air nozzle A, the pressing members 50 are released, the elastic portions 52 will generate an elastic restoring force to push the pressing members 50 away from the base body 20, and the pressing members 50 will push the force-bearing ends 41 of the four hanging arms 40 away from the base body 20. At the same time, the elastic members 70 will also push the force-bearing ends 41 of the hanging arms 40 away from the base body 20, and the clamping ends 42 will relatively displace in a direction of the interfaces 32. Since the pressing members 50 are pressed toward the base body 20 during manipulation, manipulation is ergonomic and it is easy to press and apply force. In addition, when the pressing members 50 are manipulated, manipulation of the user's hand is carried out around the base body 20, it does not require much space, and during manipulation, it is unlikely for the user to come in contact with other items, such as spokes of bicycle tires.
Please refer to
The base body 20 of the pump head 10 has only the single air outlet 23, so the pressing members 50 only drive the hanging arm 40, and the pressing members 50 are correspondingly provided with the single groove 51 to connect with the hanging arm 40. In order to fix a position of the pressing members 50 on the base body 20, a chamber 28 is provided on the base body 20 on a side of each the position-limiting grooves 24. The pressing members 50 are protruded with a position-limiting plate 53 corresponding to a position of the chambers 28, when the pressing members 50 are installed in the position-limiting grooves 24, the position-limiting plates 53 are installed in the chambers 28 of the base body 20, making the pressing members 50 to actuate within a fixed stroke in order to prevent the pressing members 50 from falling off. In addition, a center of the fixing member 34 is formed as a seal, preventing air of the inflating unit 30 from leaking from a side of the fixing member 34, besides that the sealed fixing member 34 is used for airtight fixing, alternatively, one side of the base body 20 can be directly disposed as a sealed end so that air cannot leak from the side.
Please refer to
The base body 20 has the two air outlets 23, the base body 20 is provided with the position-limiting groove 24 on one side of each of the two air outlets 23, the two supporting portions 25 protrude from the position-limiting groove 24 at positions corresponding to the two hanging arms 40, the two supporting portions 25 are respectively formed as a rib 251 in the position-limiting groove 24, and the two ribs 251 protrude from a bottom surface of the position-limiting groove 24. When the two hanging arms 40 straddle the two supporting portions 25, the two ribs 251 are disposed between the force-bearing end 41 and the clamping end 42, so that each of the two hanging arms 40 forms a swingable lever structure, and the force-bearing end 41 of the hanging arm 40 can be pressed toward the base body 20 by action of the pressing member 50 and by using the supporting portion 25 as a fulcrum. The clamping end 42 is disposed on an outer side of the interface 32 of the valve plug 31, when the force-bearing ends 41 are pressed by the pressing member 50, the hanging arms 40 will use the ribs 251 as axes, and drive the clamping ends 42 to displace away from a direction of the interfaces 32. At the same time, the pressing member 50 is capable of restoring the force-bearing ends 41 of the two hanging arms 40 to their normal positions through an elastic force of the elastic portion 52 at a bottom of the pressing member 50. In addition, the two air outlets 23 of the base body 20 have a same aperture, and are not provided with the blocking portion 231, the inflating unit 30 is correspondingly not provided with the fixing member 34, and the two end caps 60 on two sides are capable of limiting a position of the inflating unit 30.
Please refer to
The elastic member 70 is disposed between the base body 20 and the pressing member 50, the elastic member 70 is composed of the single spring 71, and the spring 71 is capable of generating an elastic force for the pressing member 50. When the pressing member 50 is exerted with a force, the elastic member 70 is compressed to generate an elastic restoring force.
Please refer to
The elastic member 70 directly butts against a bottom of the force-bearing ends 41 of the hanging arms 40, and the pressing member 50 does not need to be provided. The user only needs to directly press an end position of the force-bearing ends 41, the clamping ends 42 will be lifted away from a position of the interface 32 by using the supporting portion 25 as a fulcrum, and the spring 71 is capable of generating an elastic force for the force-bearing ends 41 of the hanging arms 40. When the hanging arms 40 are exerted with a force, the elastic member 70 is compressed to generate an elastic restoring force.
| Number | Date | Country | Kind |
|---|---|---|---|
| 111146908 | Dec 2022 | TW | national |
