TWI819696B - Portable air pump - Google Patents

Abstract

A portable air pump includes an inflating unit and a connection unit. The inflating unit includes a cylinder and a joint portion protruding outside the cylinder. The connection unit includes a body, a connection assembly, and a valve seat. The body has an axial hole and a joint hole communicating with the axial hole. The connecting assembly is arranged on the axial hole and has a first connecting hole for connecting a Schrader valve, a second connecting hole for connecting a Presta valve, and a through-hole communicating with the axial hole. The valve seat is movably arranged in the through-hole for abutting the Schrader valve or the Presta valve. The joint hole selectively communicates with the first connection hole or the second connection hole corresponding to the movement of the valve seat relative to the through-hole. The joint hole, and one of the first and second connection holes are detachably connected to the joint portion.

Description

Portable pump

The present invention relates to an inflator, and in particular to a portable inflator.

Generally common tire valves include French-style valves and American-style valves. Traditional air pumps can be used with French-style and American-style valves, as shown in Figures 9 to 11 of the Patent No. M478743 of the Republic of China. Including head, plug body, center head, valve plug, cover body and trigger. When inflating different valves, the user needs to first open the cover and take out the center head and valve plug from the head, flip the center head and valve plug and then put them back into the head in sequence, and finally screw the cover Turn your head back to complete the conversion before inflating.

The traditional pump designs mentioned above require the cover to be opened first and the center head and valve plug to be taken out from the head. The center head and valve plug also need to be flipped over and put back into the head before locking the cover. It is difficult for the user to distinguish the center head. Whether the assembly direction with the valve plug is correct, not only is it easy to assemble incorrectly, but it is also easy to lose components when removing components such as the center head and valve plug from the head.

Moreover, the above-mentioned pump uses the trigger to push the plug body, the center head and the valve plug to clamp the valve, so that the overall width of the head, that is, the distance from the trigger to the cover will be significantly larger than the pump body connected to the head. , resulting in the appearance of the head and barrel being roughly T-shaped, which is not conducive to carrying or storing.

The present invention provides a portable pump that can be changed between a storage position and a use position, and can be connected to a Schrader valve or a French valve in the use position. In the storage position, it is easy to carry or store. In the use position, no additional assembly or installation is required. Changing the orientation of the components allows you to connect Schrader valves or Prefabricated valves as required.

The portable air pump of the present invention includes an air pump unit and a connection unit. The inflating unit includes a cylinder body and a connecting portion protruding outside the cylinder body. The cylinder has an air chamber in which air can be compressed to generate high-pressure air. The joint part has an air outlet channel that communicates with the air chamber in one direction. The connection unit includes a body, a connection group and a valve seat. The body has a shaft hole and a coupling hole communicating with the shaft hole. The coupling hole is detachably connected to the coupling part, so that the coupling hole is selectively connected to the air outlet channel. The connection group is passed through the shaft hole and is provided with a first connection hole for connecting the Schrader valve, a second connection hole for connecting the Presta valve, and a through hole communicating with the shaft hole. The first connection hole is detachably connected to the coupling part. , so that the first connection hole is selectively connected to the air outlet channel. The valve seat is movably disposed in the through hole, and the coupling hole selectively communicates with the first connection hole or the second connection hole as the valve seat moves relative to the through hole. The opposite ends of the valve seat respectively have a third connection hole facing the first connection hole. A butt portion and a second butt portion facing the second connecting hole, the first butt portion is used to abut the core rod of the Schrader valve, and the second butt portion is used to abut the valve screw of the Prestige valve so that the valve seat can It is moved relative to the through hole by the Schrader valve or French valve.

In an embodiment of the present invention, the barrel of the inflating unit extends along the first axis, and the body of the connecting unit extends along the second axis. The portable pump can be changed between the storage position and the use position. When the portable pump is in the storage position, the first connection hole is connected to the coupling part, and the first axis is parallel to or coincident with the second axis. When the portable air pump is in the use position, the combination hole is connected to the combination part, and the first axis is perpendicular to the second axis.

In one embodiment of the present invention, the cylinder has a first outer diameter along the radial direction of the first axis, the body has a second outer diameter along the radial direction of the second axis, and the first outer diameter and the second outer diameter are coaxial. round.

In one embodiment of the present invention, the outer peripheral wall of the coupling portion is provided with external threads, the inner peripheral wall of the coupling hole is provided with a first internal thread corresponding to the external thread, and the inner peripheral wall of the first connecting hole is provided with a third internal thread corresponding to the external thread. Two internal threads.

In another embodiment of the present invention, the outer peripheral wall of the coupling part is provided with external threads, the inner peripheral wall of the coupling hole is provided with a first internal thread corresponding to the external thread, and the inner peripheral wall of the second connecting hole is provided with a first internal thread corresponding to the external thread. Second internal thread.

In one embodiment of the present invention, the connection group includes a first connection member and a second connection member that passes through the shaft hole and is connected to the first connection member. The first connection hole is provided in the first connection member, and the second connection hole is connected to the first connection member. The through hole is provided in the second connecting piece, and the connecting group forms an air passage communicating with the combining hole between the inner peripheral wall of the shaft hole and the outer peripheral wall of the second connecting piece. The second connecting piece is provided with an air passage that penetrates the second connecting piece and communicates with the air passage. The air hole of the through hole and the outer peripheral wall of the valve seat are provided with an airtight ring that contacts the inner peripheral wall of the through hole. When the second contact portion of the valve seat is pushed by the French valve to move the valve seat relative to the through hole and approach the first connection hole, the airtight ring is located between the air hole and the first connection hole, and the air hole communicates with the second connection hole. When the first contact portion of the valve seat is pushed by the Schrader valve so that the valve seat moves relative to the through hole and approaches the second connection hole, the airtight ring passes over the air hole and is located between the air hole and the second connection hole, and the air hole communicates with the first connection hole. hole.

In an embodiment of the present invention, the connecting unit forms a length from an end of the first connecting member to an end of the second connecting member along the axial direction of the second axis, and the length is greater than the second outer diameter.

In one embodiment of the present invention, the air pumping unit includes an air pipe. One end of the air pipe is provided with a coupling portion, and the other end of the air pipe is provided with a piston accommodated in an air chamber and a one-way valve located between the air chamber and the air outlet channel. The cylinder can move relative to the air pipe so that the piston compresses the air in the air chamber to generate high-pressure air, and the high-pressure air The air chamber enters the air outlet channel one-way through the one-way valve.

In one embodiment of the present invention, the connecting portion of the air pipe is detachably screwed to the spacer, and the spacer is located between the air pumping unit and the connection unit.

In another embodiment of the present invention, the air pumping unit includes a coupling member connected to one end of the barrel and a piston rod movably passed through the air chamber. One end of the coupling piece is provided with a coupling portion, and a one-way valve located between the air chamber and the air outlet channel is provided inside the coupling piece. One end of the piston rod is provided with a piston that can compress the air in the air chamber to generate high-pressure air, and the other end of the piston rod is provided with There is a grip for the user to hold.

Based on the above, the portable air pump of the present invention is detachably connected to the coupling part through the coupling hole and the first or second connection hole, so that the portable air pump can be changed between the storage position and the use position, and the overall size is reduced in the storage position. The length is easy to carry or store, and it can be directly connected to Schrader valves or French valves without requiring additional assembly or changing the direction of components when in use.

In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, embodiments are given below and described in detail with reference to the accompanying drawings.

1. 1a: Portable pump

10, 10a: Inflator unit

11, 11a: cylinder

A11: First axis

D11: first outer diameter

111, 111a: air chamber

12: Trachea

12a:Combining parts

121, 121a: junction

1211: External thread

122, 122a: Air outlet channel

123:Piston

124, 124a: One-way valve

13: Spacer

13a:piston rod

131a:Piston

132a: Grip part

20:Connection unit

L20:Length

21:Ontology

A21: Second axis

D21: Second outer diameter

211:Shaft hole

212: Binding hole

2121: First internal thread

22:Connection group

221: First connector

2211: First connection hole

2212: Second internal thread

222: Second connector

2221: Second connection hole

2222:Through hole

2223: Second internal thread

2224:Stomata

223:Airway

23: Valve seat

231:First Arrival

232:Second Arrival

233:Air tight ring

Figure 1 is a schematic three-dimensional view of the portable pump in a storage position according to the first embodiment of the present invention.

FIG. 2 is an exploded perspective view of the portable pump shown in FIG. 1 .

FIG. 3 is a schematic cross-sectional view of the portable pump shown in FIG. 1 .

FIG. 4 is a partially enlarged schematic diagram of FIG. 3 .

FIG. 5 is a continuation of FIG. 3 , and shows the portable pump changing from a storage position to a use position.

Figure 6 is a schematic cross-sectional view of the portable pump in a storage position according to the second embodiment of the present invention.

FIG. 7 is a partially enlarged schematic diagram of FIG. 6 .

FIG. 8 is a continuation of FIG. 7 , and shows the portable pump changing from a storage position to a use position.

Please refer to FIGS. 1 to 5 in sequence, which are a schematic appearance view, an exploded view and a cross-sectional view of the first embodiment of the portable pump 1 of the present invention. The portable air pump 1 of this embodiment includes an air pump unit 10 and a connection unit 20 . The inflating unit 10 includes a cylinder 11 and a coupling portion 121 located at an air outlet end of the inflating unit and protruding outside the cylinder 11 . The cylinder 11 has an air chamber 111 in which air can be compressed to generate high-pressure air. The connecting portion 121 has an air outlet channel 122 that communicates with the air chamber 111 in one direction. The connection unit 20 includes a body 21 , a connection group 22 and a valve seat 23 . The body 21 has a shaft hole 211 and a combination hole 212 communicating with the shaft hole 211. The combination hole 212 is detachably connected to the combination part 121 of the air pumping unit 10, so that the combination hole 212 is selectively connected to the air outlet channel 122. The connection group 22 is penetrated through the shaft hole 211 and is provided with a first connection hole 2211 for connecting a Schrader valve, a second connection hole 2221 for connecting a Prefabricated valve, and a through hole 2222 communicating with the shaft hole 211. The third connection hole of this embodiment is A connecting hole 2211 is detachably connected to the combining portion 121 so that the first connecting hole 2211 is selectively connected to the air outlet channel 122 . The valve seat 23 is movably disposed in the through hole 2222. The combination hole 212 selectively communicates with the first connection hole 2211 or the second connection hole 2221 as the valve seat 23 moves relative to the through hole 2222. The opposite ends of the valve seat 23 are respectively It has a first resisting portion 231 facing the first connecting hole 2211 and a second resisting portion 232 facing the second connecting hole 2221. The first resisting portion 231 is provided for abutting the core rod of the Schrader valve, and the second resisting portion 232 is provided for abutting the core rod of the Schrader valve. The valve screw of the Schrader valve is connected so that the valve seat 23 can be moved relative to the through hole 2222 by being pushed by the Schrader valve or the Presta valve.

The combination hole 212 of the body 21 and the first connection hole 2211 of the connection group 22 are detachably connected to the combination part 121. The user can choose to use the combination hole 212 or the first connection hole 2211 to connect. It is connected to the coupling part 121 to change the appearance of the portable pump 1 to facilitate carrying or storage. The present invention will be further described in detail below: The cylinder 11 of the inflating unit 10 extends along the first axis A11, and the body 21 of the connecting unit 20 extends along the second axis A21. As shown in Figures 4 and 5, the portable pump 1 can be converted between a storage position (Figure 4) and a use position (Figure 5). When the portable pump 1 is in the storage position, the first connection hole 2211 is connected to the coupling portion 121, and the first axis A11 is parallel to or coincident with the second axis A21, making the appearance of the portable pump 1 slightly I-shaped and easy to carry or store. When the portable pump 1 is in the use position, the combination hole 212 is connected to the combination part 121, the first axis A11 is perpendicular to the second axis A21, the appearance of the portable pump 1 is slightly T-shaped, and the high-pressure air generated by the air chamber 111 can be unidirectional. The ground passes through the air outlet channel 122 and enters the first connecting hole 2211 or the second connecting hole 2221 to inflate the Schrader valve connected to the first connecting hole 2211 or the French valve connected to the second connecting hole 2221.

Further, the cylinder 11 has a first outer diameter D11 along the radial direction of the first axis A11, and the body 21 has a second outer diameter D21 along the radial direction of the second axis A21. More preferably, the first outer diameter D11 and The ratio of the second outer diameter D21 can be 1, that is, the first and second outer diameters D11 and D21 are concentric circles (the first and second axes A11 and A21). Therefore, when the portable pump 1 is in the storage position, the cylinder body 11 and the main body 21 are substantially flush with each other, so that the portable pump 1 has a more compact appearance and is easy to carry or store.

In order to enable the combination hole 212 and the first connection hole 2211 to be detachably connected to the combination part 121, the outer peripheral wall of the combination part 121 is provided with an external thread 1211, and the inner peripheral wall of the combination hole 212 is provided with a first inner thread corresponding to the external thread 1211. Thread 2121, the inner peripheral wall of the first connection hole 2211 is provided with a second internal thread 2212 corresponding to the external thread 1211. The first internal thread 2121 and the second internal thread 2212 can be detachably screwed to the external thread 1211 respectively.

The connection set 22 of this embodiment includes a first connection part 221 and a second connection part 222 that passes through the shaft hole 211 and is connected to the first connection part 221 . The aforementioned first connecting hole 2211 is provided in the first connecting member 221 , and the aforementioned second connecting hole 2221 and through hole 2222 are provided in the second connecting member 222 . The connecting group 22 forms an air passage 223 communicating with the combining hole 212 between the inner peripheral wall of the shaft hole 211 and the outer peripheral wall of the second connecting member 222. The second connecting member 222 is provided with an air channel 223 that penetrates the second connecting member 222 and communicates with the air channel 223 and the outer peripheral wall of the second connecting member 222. Air hole 2224 of through hole 2222. The outer peripheral wall of the valve seat 23 is provided with an airtight ring 233 that abuts the inner peripheral wall of the through hole 2222 . When the second contact portion 232 of the valve seat 23 is pushed by the French valve to move the valve seat 23 relative to the through hole 2222 and close to the first connection hole 2211, the airtight ring 233 is located between the air hole 2224 and the first connection hole 2211. The air hole 2224 communicates with the second connection hole 2221. When the first contact portion 231 of the valve seat 23 is pushed by the Schrader valve so that the valve seat 23 moves relative to the through hole 2222 and approaches the second connection hole 2221, the airtight ring 233 crosses the air hole 2224 and is located between the air hole 2224 and the second connection hole. 2221, the air hole 2224 communicates with the first connection hole 2211.

Further, the connecting unit 20 forms a length L20 from an end of the first connecting member 221 to an end of the second connecting member 222 along the axial direction of the second axis A21, and the length L20 is greater than the second outer diameter D21. Therefore, when the portable pump 1 is in the use position, the appearance of the portable pump 1 is slightly T-shaped.

The inflator unit 10 of this embodiment includes an air pipe 12. One end of the air pipe 12 is provided with a connecting portion 121, and the other end of the air pipe 12 is provided with a piston 123 accommodated in the air chamber 111 and a one-way gas pipe located between the air chamber 111 and the air outlet channel 122. Valve 124. The cylinder 11 can move relative to the air pipe 12 so that the piston 123 compresses the air in the air chamber 111 to generate high-pressure air, and the high-pressure air unidirectionally flows from the air chamber 111 into the air outlet channel 122 through the one-way valve 124 . In addition, the connecting portion 121 of the air pipe 12 can also be detachably screwed to a spacer 13 , and the spacer 13 is located between the inflator unit 10 and the connection unit 20 .

Please refer to FIGS. 6 to 8 in sequence, which are schematic cross-sectional views of a second embodiment of the portable pump 1a of the present invention. The structure of the portable pump 1a of this embodiment is roughly the same as that of the first embodiment. The difference is that the inner peripheral wall of the second connection hole 2221 of the second connection member 222 is provided with a second internal thread corresponding to the external thread 1211 of the coupling portion 121a. 2223. As shown in Figures 7 and 8, the portable pump 1a can be converted between a storage position (Figure 7) and a use position (Figure 8). When the portable pump 1a is in the storage position, the second connection hole 2221 is connected to the coupling part 121. When the portable pump 1a is in the use position, the combination hole 212 is connected to the combination part 121a. In addition, the inflating unit 10a of this embodiment includes a coupling member 12a connected to one end of the cylinder 11a and a piston rod 13a movably installed in the air chamber 111a. A coupling portion 121a is provided at one end of the coupling member 12a, and a one-way valve 124a is provided inside the coupling member 12a between the air chamber 111a and the air outlet channel 122a. One end of the piston rod 13a is provided with a piston 131a that can compress the air in the air chamber 111a to generate high-pressure air. The other end of the piston rod 13a is provided with a holding portion 132a for the user to hold.

To sum up, the portable pumps 1 and 1a of the present invention are detachably connected to the coupling parts 121 and 121a through the coupling hole 212 and the first or second connection holes 2211 and 2221, so that the portable pumps 1 and 1a can be stored. Convert between location and use location. When the portable pump 1, 1a is in the storage position, the first connection hole 2211 or the second connection hole 2221 is connected to the coupling portion 121, 121a, the first axis A11 is parallel to or coincident with the second axis A21, the cylinder 11 and the body 21 are approximately The tops are aligned with each other and reduce the overall length for easy carrying or storage. When the portable pump 1, 1a is in the use position, the combination hole 212 is connected to the combination portion 121, 121a, the first axis A11 is perpendicular to the second axis A21, and the high-pressure air generated by the air chambers 111, 111a can pass through the air outlet channel 122 in one direction. , 122a, combine the hole 212, the air channel 223, the air hole 2224 and the through hole 2222 to enter the first connection hole 2211 or the second connection hole 2221 to directly inflate the Schrader valve or French valve without the need for additional assembly components or Change component orientation.

Although the present invention has been disclosed above through embodiments, they are not intended to limit the present invention. Anyone with ordinary knowledge in the technical field may make some modifications and modifications without departing from the spirit and scope of the present invention. Therefore, The protection scope of the present invention shall be determined by the appended patent application scope.

10:Pumping unit

11:Cylinder

A11: First axis

D11: first outer diameter

111:Air chamber

12: Trachea

121:joint part

1211: External thread

122: Air outlet channel

13: Spacer

20:Connection unit

L20:Length

21:Ontology

A21: Second axis

D21: Second outer diameter

211:Shaft hole

212: Binding hole

2121: First internal thread

22:Connection group

221: First connector

2212: Second internal thread

222: Second connector

2221: Second connection hole

2222:Through hole

2224:Stomata

223:Airway

23: Valve seat

231:First Arrival

232:Second Arrival

233:Air tight ring

Claims (10)

A portable air pump includes: an air pumping unit, including a cylinder and a coupling portion located at an air outlet end of the air pumping unit; the barrel extends along a first axis; the barrel has an air outlet capable of compressing air therein; An air chamber that generates high-pressure air, the combination portion has an air outlet channel that is unidirectionally connected to the air chamber; and a connection unit including a body, a connection group and a valve seat, the body extends along a second axis, the The body has a shaft hole and a coupling hole connected to the shaft hole. The coupling hole is detachably connected to the coupling part so that the coupling hole selectively communicates with the air outlet channel. The connection group is passed through the shaft hole and There is a first connection hole for connecting the Schrader valve, a second connection hole for connecting the Presta valve and a through hole communicating with the shaft hole. The first connection hole is detachably connected to the joint part so that the The first connection hole is selectively connected to the air outlet channel, the valve seat is movably disposed in the through hole, and the combination hole selectively communicates with the first connection hole as the valve seat moves relative to the through hole or The second connection hole and the opposite ends of the valve seat respectively have a first contact portion facing the first connection hole and a second contact portion facing the second connection hole. The first contact portion is for contacting the American valve seat. The core rod of the valve, and the second contact portion is used to contact the valve screw of the Prefabricated valve, so that the valve seat can be pushed by the Schrader valve or the Prefab valve and move relative to the through hole. The portable pump can Change between the storage position and the use position; when the portable pump is in the storage position, the first connection hole is connected to the coupling part, and the first axis is parallel or coincident with the second axis; when the portable pump is in use position, the coupling hole is connected to the coupling part, and the first axis is perpendicular to the second axis. The portable pump according to claim 1, wherein the barrel has a first outer diameter along the radial direction of the first axis, the body has a second outer diameter along the radial direction of the second axis, and the third An outer diameter and the second outer diameter are coaxial central circles. The portable pump according to claim 2, wherein the outer peripheral wall of the coupling part is provided with an external thread, the inner peripheral wall of the coupling hole is provided with a first internal thread corresponding to the external thread, and the inner peripheral wall of the first connecting hole is provided with a first internal thread corresponding to the external thread. A second internal thread corresponding to the external thread is provided. The portable pump according to claim 2, wherein the outer peripheral wall of the coupling part is provided with an external thread, the inner peripheral wall of the coupling hole is provided with a first internal thread corresponding to the external thread, and the inner peripheral wall of the second connecting hole is provided with a first internal thread corresponding to the external thread. A second internal thread corresponding to the external thread is provided. The portable pump according to claim 2, wherein the connection group includes a first connection member and a second connection member that passes through the shaft hole and is connected to the first connection member, and the first connection hole is provided in The first connecting piece, the second connecting hole and the through hole are provided in the second connecting piece, and the connecting group forms a connecting hole between the inner peripheral wall of the shaft hole and the outer peripheral wall of the second connecting piece. The air channel, the second connecting member is provided with an air hole that penetrates the second connecting member and connects the air channel and the through hole, and the outer peripheral wall of the valve seat is provided with an airtight ring that abuts the inner peripheral wall of the through hole; When the second resisting portion of the valve seat is pushed by the French valve so that the valve seat moves relative to the through hole and approaches the first connection hole, the airtight ring is located between the air hole and the first connection hole, The air hole is connected to the second connection hole; when the first contact portion of the valve seat is pushed by the Schrader valve so that the valve seat moves relative to the through hole and approaches the second connection hole, the airtight ring passes over the air hole. Located between the air hole and the second connection hole, the air hole communicates with the first connection hole. The portable pump according to claim 5, wherein the connecting unit forms a length along the axial direction of the second axis from an end of the first connecting member to an end of the second connecting member, and the length is greater than the first connecting member. 2 outer diameter. The portable inflator as claimed in claim 3, wherein the inflating unit includes an air pipe, one end of which is provided with the coupling part, and the other end of which is provided with a piston accommodated in the air chamber and a piston located between the air chamber and The one-way valve between the air outlet channels, the cylinder can move relative to the air pipe to cause the piston to compress the air in the air chamber to generate high-pressure air, and the high-pressure air unidirectionally enters the air outlet channel from the air chamber through the one-way valve . The portable air pump according to claim 7, wherein the connecting portion of the air pipe is detachably screwed to a spacer, and the spacer is located between the air pump unit and the connection unit. The portable inflator as claimed in claim 4, wherein the inflating unit includes a coupling member connected to one end of the cylinder and a piston rod movably disposed in the air chamber, and one end of the coupling member is provided with the coupling member. and a one-way valve is provided inside the coupling member between the air chamber and the air outlet channel. One end of the piston rod is provided with a piston that can compress the air in the air chamber to generate high-pressure air, and the other end of the piston rod is provided with There is a holding part for the user to hold. A portable air pump includes: an air pumping unit, including a cylinder and a coupling portion located at an air outlet end of the air pumping unit; the barrel extends along a first axis; the barrel has an air outlet capable of compressing air therein; An air chamber that generates high-pressure air, the combination portion has an air outlet channel that is unidirectionally connected to the air chamber; and a connection unit including a body, a connection group and a valve seat, the body extends along a second axis, the The body has a shaft hole and a coupling hole connected to the shaft hole. The coupling hole is detachably connected to the coupling part so that the coupling hole selectively communicates with the air outlet channel. The connection group is passed through the shaft hole and There is a first connection hole for connecting the Schrader valve, a second connection hole for connecting the Presta valve and a through hole communicating with the shaft hole. The second connection hole is detachably connected to the joint part so that the The second connection hole is selectively connected to the air outlet channel, the valve seat is movably disposed in the through hole, and the combination hole is selectively connected to the first connection hole as the valve seat moves relative to the through hole. The second connection hole and the opposite ends of the valve seat respectively have a first contact portion facing the first connection hole and a second contact portion facing the second connection hole. The first contact portion is for contacting the American valve seat. The core rod of the valve, and the second contact portion is used to contact the valve screw of the Prefabricated valve, so that the valve seat can be pushed by the Schrader valve or the Prefab valve and move relative to the through hole. The portable pump can Changing between the storage position and the use position; when the portable pump is in the storage position, the second connection hole is connected to the coupling part, and the first axis is parallel to or coincident with the second axis; When the portable air pump is in the use position, the combination hole is connected to the combination part, and the first axis is perpendicular to the second axis.

Images