TW201802355A - Air inflating device capable of outputting a larger amount of airflow to quickly lift the cover to tightly fit the rim so as to inflate the bike tire without the need of an inner tube - Google Patents

Abstract

Disclosed is an air inflating device which includes: a cylinder having opposite first and second ends, a first air chamber, a second air chamber and a channel connected to the first air chamber and the second air chamber; a piston assembly including a first piston and a second piston, wherein the first piston is slidably installed in the first air chamber, the second piston is slidably installed in the second air chamber; a cover member installed at the first end, a first space is formed between the cover member, the first air chamber and the first piston, and a second space is formed between the cover member, the second air chamber and the second piston; a bottom seat assembly installed at the second end, a third space is formed between the bottom seat assembly, the first air chamber and the first piston, and a fourth space is formed between the bottom seat assembly, the second air chamber and the second piston; and an air flowing channel assembly including an air flowing channel and a check valve, wherein the air flowing channel is undirectionally communicated with the fourth space, the check valve is received in the air flowing channel, and the air inflating nozzle is communicated with the air flowing channel.

Description

Pump

The invention discloses a pumping device, in particular, a pumping device capable of outputting an air quantity.

The pumps on the market mainly include: a base; a cylinder body, the bottom end of which is connected to the base, the cylinder body has a sliding space inside, and one side of the cylinder body has a sliding space connecting the sliding space to the outside. Output hole; a gas transmission device, one end of which is connected with the output hole of the barrel, and the other end is used for connection with an external inflatable body; a piston rod having a piston, a rod body and a grip, the piston Is located in the sliding space of the barrel, one end of the rod is connected to the piston, and the grip is connected to the other end of the rod, and is located outside the barrel to slide back and forth by external force, The gas in the sliding space is output from the gas transmission device through the output hole.

When a bicycle wheel without a tube is deflated, there is a gap between the tire and the wheel frame. If a conventional pump is used, the air output of the pump is small and cannot quickly support the tire. The gap between the gaps allows the user to use a conventional pump to pump gas into the bicycle wheel.

In view of the fact that the above-mentioned problems of the prior art cannot be effectively solved and overcome, the applicant filed this patent application to solve the foregoing problems.

The technical problem to be solved by the present invention is that when a bicycle wheel without a tube is deflated, there is a gap between the tire and the wheel frame. If a conventional inflator is used, the outgassing capacity of the inflator is small and cannot be quickly supported. When the tire is lifted, the gap between the tire and the wheel frame cannot be reduced, which causes the gas entering the bicycle wheel to leak out through the gap.

The pumping device of the present invention includes a cylinder having a first end and a second end opposite to each other and including a first air chamber, a second air chamber, and a passage, which communicates with the first air chamber and The second air chamber; a piston group including a first piston and a second piston, the first piston is slidably disposed in the first air chamber, the second piston is slidably disposed in the second air chamber, and the first A piston and the second piston can slide synchronously; a cover member is disposed at the first end of the cylinder, a first space is formed between the cover member, the first air chamber and the first piston, and A second space is formed between the cover member, the second air chamber and the second piston; a base group is disposed at the second end of the cylinder; the base group, the first air chamber and the first piston A third space is formed therebetween, and a fourth space is formed between the base group, the second air chamber, and the second piston; and the first-rate road group includes an air flow channel and a check valve, and the air flow channel is unidirectional. Communicating with the fourth space, the one-way valve is accommodated in the airflow channel; an inflatable nozzle is connected with the airflow channel and can Receiving inflation; when the first piston and the second piston move toward the first end of the cylinder, the gas contained in the first space enters the second space through the passage and is contained in the second space. The gas enters the fourth space unidirectionally, and the outside air enters the third space; when the first piston and the second piston move toward the second end of the cylinder, the gas contained in the fourth space One-way through the one-way valve and through the air flow passage through the inflation nozzle to enter the object to be inflated, external air passes through the third space and unidirectionally enters the first space with the gas contained in the third space. One space and the second space.

When the first piston and the second piston move toward the first end of the cylinder, the gas contained in the first space and the gas contained in the second space unilaterally enter the fourth space, and when the The first piston and the second piston move toward the second end of the cylinder, and the gas contained in the fourth space is unidirectionally output to the inflation nozzle through the one-way valve. The air volume of the inflating device of the present invention is the sum of the gas volume in the first space and the gas volume in the second space. When the user wants to inflate a bicycle wheel without a tube, the inflating mouth is connected to the tire, and then the piston group is pushed, and The first piston and the second piston slide back and forth, respectively, and the air pump of the present invention outputs a large amount of air to quickly support the tire tube, so that the tire tube and the wheel frame can be closely contacted, and the tubeless wheel can be easily moved. Pump up the bicycle wheel.

Other objects, advantages, and novel features of the present invention will be more apparent from the following detailed description and the accompanying drawings.

Regarding the technology, means and effects used in the present invention, a preferred embodiment is described in detail below with reference to the drawings. This is for illustration purposes only, and is not limited by such a structure in patent applications.

Refer to Figures 1 to 4. The pumping device of the present invention includes a cylinder 10, a piston group 20, a cover member 30, a base group 40, a first-rate track group 50, an inflation group 60, and a pressure gauge 70. The piston group 20 is slidably disposed on the cylinder 10. The cover 30 and the base group 40 are respectively disposed at opposite ends of the cylinder 10, the piston group 20 is passed through the cover 30, the inflation group 60 is connected to the base group 40, and the pressure gauge 70 is connected to the cover 30. On one side, the flow channel group 50 passes through the base group 40 and the inflation group 60 and communicates with the cylinder 10 and the pressure gauge 70.

The cylinder 10 has a first end 101 and a second end 102 opposite to each other and includes a first air chamber 11, a second air chamber 12, a passage 13 and a transmission passage 14. The first air chamber 11 and the The second air chamber 12 penetrates the first end 101 and the second end 102 of the cylinder 10 respectively, and the passage 13 is provided between the first air chamber 11 and the second air chamber 12 and communicates with the first air chamber 11 and The second air chamber 12, the passage 13 is located at the first end 101 of the cylinder 10, and the transmission passage 14 is adjacent to the first air chamber 11 away from one side of the second air chamber 12 and penetrates the first end of the cylinder 10 101 and the second end 102, the transmission channel 14 communicates with the pressure gauge 70.

The piston group 20 includes a first piston 21, a second piston 22, a first sliding rod 23, and a second sliding rod 24. The first piston 21 is slidably disposed in the first air chamber 11, and the second piston 22 is slidably disposed in the second air chamber 12, the first piston 21 and the second piston 22 can slide synchronously, the first piston 21 and the second piston 22 will not cover the channel 13, and the first slide The rod 23 is connected to the first piston 21 and slidably passes through the cover 30, and the second slide rod 24 is connected to the second piston 22 and slidably passes through the cover 30. The first piston 21 includes a first annular groove 211. The first annular groove 211 is annularly disposed on an outer peripheral edge of an end of the first piston 21 away from the first sliding rod 23. The second piston 22 includes a second annular groove. 221, the second annular groove 221 is annularly disposed on an outer peripheral edge of an end of the second piston 22 away from the second slide rod 24.

The piston group 20 further includes a first piston ring 25, a second piston ring 26, a first abutment ring 27, a second abutment ring 28, and a handle 29. The first piston ring 25 is sleeved on the first A ring groove 211, the second piston ring 26 is sleeved on the second ring groove 221, the first piston ring 25 is slidably abutted against the inner wall of the cylinder 10 adjacent to the first air chamber 11, and the second piston The ring 26 is slidably abutted against the inner wall of the cylinder 10 adjacent to the second air chamber 12, and the first piston ring 25 and the second piston ring 26 can slide back and forth between the channel 13 and the base group 40. The first abutment ring 27 is sleeved on the first slide rod 23 and abuts against the first piston 21, and the second abutment ring 28 is sleeved on the second slide rod 24 and abuts the second piston 22. An abutment ring 27 and the second abutment ring 28 can abut the cover member 30. The handle 29 connects the first slide bar 23 and the second slide bar 24 and follows the first piston 21 and the second The piston 22 slides relative to the cylinder 10 to be able to bear against the cover 30 and opposite to one end of the cylinder 10.

The cover member 30 includes a first protruding portion 31 and a second protruding portion 32. The first protruding portion 31 is received in the first air chamber 11, and the second protruding portion 32 is received in the first air chamber 11. Two air chambers 12, the first abutment ring 27 can abut the first protruding portion 31, and the second abutment ring 28 can abut the second protruding portion 32. In this embodiment, a first space A1 is formed between the first protruding portion 31, the first air chamber 11 and the first piston 21, the second protruding portion 32, the second air chamber 12 and A second space A2 is formed between the second pistons 22.

The base set 40 includes a body 41 and a plate 42 connected to the cylinder 10. The plate 42 abuts the cylinder 10 adjacent to one side of the first air chamber 11, and the plate 42 is located in the cylinder 10. A third space A3 is formed between the plate 42 and the first air chamber 11 and the first piston 21 between the main body 41 and the body 41. The main body 41 includes a connecting portion 411, a first protruding portion 412, a second protruding portion 413, and a third protruding portion 414. The first protruding portion 412 and the second protruding portion 413 are respectively provided. At the opposite ends of the connecting portion 411, the third protruding portion 414 connects the connecting portion 411 and is located between the first protruding portion 412 and the second protruding portion 413, and the first protruding portion 412 is adjacent to The flow channel group 50 forms a shoulder portion 4121, the first protruding portion 412 is received in the second air chamber 12, and the third protruding portion 414 is received in the transmission channel 14. In this embodiment, the A fourth space A4 is formed between the first protruding portion 412, the second air chamber 12 and the second piston 22. The plate 42 includes a perforation 421 that penetrates the opposite ends of the plate 42 and communicates with the third space A3. External air can enter the third space A3 through the perforation 421.

The flow channel group 50 includes an air flow channel 51 and a one-way valve 52. The air flow channel 51 penetrates the body 41 and communicates with the second air chamber 12 unidirectionally. The one-way valve 52 is received in the air flow channel 51. The air flow channel 51 includes a first section 511, a second section 512, a third section 513, and a fourth section 514. The second section 512 is located between the first section 511 and the third section 513 and mutually The first segment 511 passes through the first protruding portion 412, and the first protruding portion 412 forms the shoulder portion 4121 adjacent to the inner edge of the first segment 511. The first segment 511 accommodates the unidirectional The valve 52 communicates with the second air chamber 12 unidirectionally, the second section 512 passes through the connecting portion 411, the third section 513 passes through the second protruding portion 413 and communicates with the inflatable group 60, the fourth The segment 514 passes through the third protruding portion 414, and the fourth segment 514 is located between the first segment 511 and the second segment 512 and communicates with the transmission channel 14 and the second segment 512. The check valve 52 includes a valve core 521 and an elastic member 522. The valve core 521 and the elastic member 522 are accommodated in the first section 511, and opposite ends of the elastic member 522 elastically abut against the valve core, respectively. 521 and the body 41 are adjacent to the inner edge of the airflow passage 51, so that the valve core 521 elastically abuts against the shoulder portion 4121, and the first section 511 of the airflow passage 51 unidirectionally communicates with the fourth space A4.

The inflatable group 60 includes an inflatable nozzle 61, an air pipe 62 and a nut 63. The opposite ends of the air pipe 62 are respectively connected to the second protruding portion 413 and the inflatable nozzle 61. The third section 513 of the air flow channel 51 is worn through The air tube 62 and the second protruding portion 413 are provided, the inflation nozzle 61 communicates with the third section 513 of the air flow channel 51 and can be connected to an object to be inflated, and the nut 63 is provided at one end of the air tube 62 away from the inflation nozzle 61 The screw is provided on the second protruding portion 413.

Continuing to refer to FIG. 3 to FIG. 6. When the first piston 21 and the second piston 22 move toward the first end 101 of the cylinder 10, the gas contained in the first space A1 enters the second space A2 through the passage 13 and is accommodated in the second space A2. The gas in the second space A2 enters the fourth space A4 unidirectionally, and the gas in the outside enters the third space A3. When the first piston 21 and the second piston 22 continue to move toward the first end 101 of the cylinder 10, the first abutment ring 27 abuts the first protruding portion 31, and the second abutment ring 28 abuts When leaning against the second protruding portion 32, the first piston 21 and the second piston 22 will not cover the passage 13. When the first piston 21 and the second piston 22 move in the direction of the second end 102 of the cylinder 10, the gas contained in the fourth space A4 pushes against the valve core 521 and unidirectionally passes through the single The valve 52 continues to enter the air flow channel 51 and branches to the third section 513 and the fourth section 514. The gas contained in the third section 513 passes through the inflation nozzle 61 and enters the object to be inflated. The gas in the fourth section 514 continues to enter the pressure gauge 70 through the transmission channel 14, and the external gas enters the third space A3 through the perforation 421 of the plate 42 and together with the gas contained in the third space A3. Enter the first space A1 and the second space A2 unidirectionally.

In summary, the pumping device of the present invention has the following advantages:

1. When the first piston 21 and the second piston 22 move toward the first end 101 of the cylinder 10, the gas contained in the first space A1 enters the second space A2 through the passage 13 and is accommodated with The gas in the second space A2 enters the fourth space A4 unidirectionally, and the outside gas enters the third space A3. When the first piston 21 and the second piston 22 move toward the second end 102 of the cylinder 10, the gas contained in the fourth space A4 pushes against the valve core 521 and unidirectionally passes through the check valve 52. It continues into the air flow channel 51 and splits into the third section 513 and the fourth section 514. The gas contained in the third section 513 passes through the inflation nozzle 61 and the gas contained in the fourth section 514 is connected. Entering the pressure gauge 70 through the transmission channel 14, external gas enters the third space A3 through the perforation 421 of the plate 42 and enters the first space unidirectionally with the gas contained in the third space A3. A1 and the second space A2. The air volume of the air pump of the present invention is the sum of the gas volume of the first space A1 and the gas volume of the second space A2. When a user wants to inflate a bicycle wheel without a tube, the inflation nozzle 61 is connected to the tire, and then the piston is pushed The handles 29 of the group 20 cause the first piston 21 and the second piston 22 to slide back and forth, respectively. The pumping device of the present invention outputs a large amount of air and quickly supports the tire, so that the tire and the wheel frame are in close contact. , And can easily inflate bicycle wheels.

2. The passage 13 is disposed between the first air chamber 11 and the second air chamber 12 and is located at the first end 101 of the cylinder 10, so that the first air chamber 11 and the second air chamber 12 are The distance between them is shorter, thereby reducing the volume of the cylinder 10.

However, the above are only the preferred embodiments of the present invention. When the scope of implementation of the present invention cannot be limited by this, the changes in numerical values or the replacement of equivalent elements, or the equivalent according to the scope of the patent application of the present invention Changes and modifications should all fall within the scope of the invention patent.

10‧‧‧ Cylinder
101‧‧‧ the first end
102‧‧‧ the second end
11‧‧‧ the first air chamber
12‧‧‧Second Air Chamber
13‧‧‧channel
14‧‧‧ transmission channel
20‧‧‧Piston Set
21‧‧‧First Piston
211‧‧‧The first ring groove
22‧‧‧Second Piston
221‧‧‧Second ring groove
23‧‧‧ the first slider
24‧‧‧Second slider
25‧‧‧first piston ring
26‧‧‧Second Piston Ring
27‧‧‧ the first abutment ring
28‧‧‧Second abutment ring
29‧‧‧handle
30‧‧‧ cover
31‧‧‧first extension
32‧‧‧ second extension
40‧‧‧base set
41‧‧‧ Ontology
411‧‧‧Connection Department
412‧‧‧The first protrusion
4121‧‧‧Shoulder
413‧‧‧ second protrusion
414‧‧‧ Third protrusion
42‧‧‧plate
421‧‧‧perforation
50‧‧‧ runner group
51‧‧‧airflow channel
511‧‧‧ first paragraph
512‧‧‧second paragraph
513‧‧‧ third paragraph
514‧‧‧paragraph 4
52‧‧‧Check valve
521‧‧‧Spool
522‧‧‧Elastic piece
60‧‧‧ inflatable group
61‧‧‧ inflatable mouth
62‧‧‧ trachea
63‧‧‧nut
70‧‧‧Pressure gauge
A1‧‧‧First Space
A2‧‧‧Second Space
A3‧‧‧ Third Space
A4‧‧‧ Fourth Space

Figure 1: A perspective view of a pumping device according to the present invention. Fig. 2 is a partial exploded view of a pumping device according to the present invention. FIG. 3 is a sectional view taken from FIG. 1. FIG. 4 is a continuation of FIG. 3, showing that the first piston and the second piston slide toward the cover member. FIG. 5 is a continuation of FIG. 4, showing that the first piston and the second piston are located at one end of the cylinder adjacent to the cover member. FIG. 6 is a continuation of FIG. 5, showing that the first piston and the second piston slide toward the base group.

10‧‧‧ Cylinder

101‧‧‧ the first end

102‧‧‧ the second end

11‧‧‧ the first air chamber

12‧‧‧Second Air Chamber

13‧‧‧channel

14‧‧‧ transmission channel

21‧‧‧First Piston

211‧‧‧The first ring groove

22‧‧‧Second Piston

221‧‧‧Second ring groove

23‧‧‧ the first slider

24‧‧‧Second slider

27‧‧‧ the first abutment ring

28‧‧‧Second abutment ring

29‧‧‧handle

30‧‧‧ cover

31‧‧‧first extension

32‧‧‧ second extension

41‧‧‧ Ontology

411‧‧‧Connection Department

412‧‧‧The first protrusion

4121‧‧‧Shoulder

413‧‧‧ second protrusion

414‧‧‧ Third protrusion

50‧‧‧ runner group

51‧‧‧airflow channel

511‧‧‧ first paragraph

512‧‧‧second paragraph

513‧‧‧ third paragraph

514‧‧‧paragraph 4

62‧‧‧ trachea

63‧‧‧nut

70‧‧‧Pressure gauge

Claims (10)

An air-pumping device includes: a cylinder having a first end and a second end opposite to each other and including a first air chamber, a second air chamber, and a passage, the passage connecting the first air chamber and the A second air chamber; a piston group including a first piston and a second piston, the first piston is slidingly disposed in the first air chamber, the second piston is slidingly disposed in the second air chamber, and the first The piston and the second piston can slide synchronously; a cover member is disposed at the first end of the cylinder, a first space is formed between the cover member, the first air chamber and the first piston, and the cover A second space is formed between the second air chamber and the second piston; a base group is disposed at the second end of the cylinder; the base group, the first air chamber and the first piston A third space is formed, and a fourth space is formed between the base group, the second air chamber, and the second piston; the first-stage channel group includes an air flow channel and a check valve, and the air flow channel is unidirectionally communicated In the fourth space, the one-way valve is accommodated in the air flow passage; an inflation nozzle is connected to the air flow passage and can Connect the object to be inflated; when the first piston and the second piston move toward the first end of the cylinder, the gas contained in the first space enters the second space through the passage and is contained in the second space The gas in the space enters the fourth space unidirectionally, and the outside air enters the third space. When the first piston and the second piston move toward the second end of the cylinder, the gas contained in the fourth space is contained in the fourth space. Gas unidirectionally passes through the one-way valve, and passes through the air flow passage through the inflation nozzle to enter the object to be inflated. External gas passes through the third space and unidirectionally enters the gas with the gas contained in the third space. The first space and the second space. The air pumping device according to claim 1, wherein the first air chamber and the second air chamber pass through the first end and the second end of the cylinder, respectively, and the passage is located between the first air chamber and the second air chamber. And located at the first end of the cylinder, the piston group includes a first slide bar and a second slide bar, the first slide bar is connected to the first piston and slidably passes through the cover, and the second slide bar A rod is connected to the second piston and slidably passes through the cover. The pumping device according to claim 2, wherein the cover includes a first projecting portion and a second projecting portion, the first projecting portion is received in the first air chamber, and the second projecting portion Housed in the second air chamber, the piston group includes a first abutment ring and a second abutment ring. The first abutment ring sleeves the first sliding rod and abuts the first piston. Two abutment rings sleeve the second sliding rod and abut the second piston, when the first piston and the second piston move toward the first end of the cylinder, and the first abutment ring abuts the first In the protruding portion, when the second abutment ring abuts against the second protruding portion, the first piston and the second piston will not cover the passage. The inflating device according to claim 3, wherein the first piston includes a first ring groove, the first ring groove is provided on an outer peripheral edge of the first piston, and the second piston includes a second ring groove. A second ring groove ring is provided on the outer periphery of the second piston. The piston group includes a first piston ring and a second piston ring. The first piston ring is sleeved on the first ring groove and the second piston ring. Nested on the second ring groove, the first piston ring slidably abuts against the inner wall of the cylinder adjacent to the first air chamber, and the second piston ring slidably abuts on the cylinder adjacent to the second air chamber. An inner wall, and the first piston ring and the second piston ring can slide back and forth between the channel and the base group. The pumping device according to claim 1, wherein the base group includes a plate, the plate abuts against the cylinder and includes a perforation, the perforation runs through the opposite ends of the plate and communicates with the third space. The pumping device according to claim 2, wherein the piston group includes a handle, which connects the first slide bar and the second slide bar and moves along with the first piston and the second piston sliding relative to the cylinder. It is able to abut the end of the cover opposite to the cylinder. The air pumping device according to any one of claims 1 to 6, wherein the base group includes a body, the airflow channel runs through the body and includes a first section, a second section, and a third section, and the second section The segment is located between the first segment and the third segment and communicates with each other. The first segment houses the check valve and unidirectionally communicates with the fourth space, and the third segment communicates with the inflatable nozzle. The air pumping device according to claim 7, wherein the body includes a connecting portion, a first protruding portion and a second protruding portion, and the first protruding portion and the second protruding portion are respectively provided on the link Opposite ends of the first part, the first protruding part is accommodated in the second air chamber, the first segment passes through the first protruding part, the second segment passes through the connecting part, and an inflatable group includes the inflatable mouth A trachea and a nut, the opposite ends of the trachea are respectively connected to the second protrusion and the inflation nozzle, and the third section of the air flow channel is passed through the trachea and the second protrusion, and the nut is arranged on the The trachea is far from one end of the inflatable mouth and is screwed to the second protruding portion. The inflating device according to claim 8, wherein the first protruding portion forms a shoulder adjacent to the inner edge of the first section, and the check valve includes a valve core and an elastic member, and the elastic member abuts against the valve The core makes the valve core elastically abut the shoulder. The pumping device according to claim 8, comprising a pressure gauge connected to the cover, the cylinder including a transmission channel, the transmission channel communicating with the pressure gauge, the airflow channel including a fourth section, the body The third protrusion includes a third protrusion, which is connected to the connection portion and is located between the first protrusion and the second protrusion. The third protrusion is received in the transmission channel. The fourth section passes through the third protrusion and communicates the transmission channel with the second section.