TWM536277U - Portable tire pump - Google Patents

Description

Portable pump

The present invention discloses a portable inflator, especially a portable inflator capable of rapid inflation and high pressure pumping.

Referring to the portable pump of Taiwan Patent No. M315778, which comprises a cylinder, a gas transmission rod, a piston device, a head and a gas nozzle joint, the first end of the cylinder body is provided with an air inlet hole, and the second The end of the gas delivery rod has a gas passage axially extending through the second end of the first end thereof, the piston device comprising a piston body and a check valve, the piston body being disposed on the second of the gas transmission rod The check valve is disposed between the second end of the gas delivery rod and the piston body, and the piston body and the second end of the gas transmission rod are disposed in the cylinder body, and the piston body is provided with a central hole And a through hole, the head is disposed at the first end of the gas rod, and the gas nozzle joint is disposed at the head, and the barrel is moved relative to the gas rod in a direction away from the head Air enters the cylinder through the vent hole of the upper cover, and enters the bottom end of the cylinder through the through hole of the piston body, while blocking air from the center hole by stopping the valve piece, when the cylinder faces the head When the direction moves relative to the gas delivery rod, the air at the bottom end of the cylinder enters through the central hole The gas passage of the gas rod is further flowed out from the head and the nozzle joint. The conventional air pump has a small amount of air output, so that when the user inflates the tire, it takes a lot of time to reciprocate the pump, which is not convenient.

In view of the above problems of the prior art, which cannot be effectively solved and overcome, the present applicant has filed this patent application to solve the aforementioned problems.

The problem to be solved by the present invention is that the conventional air pump has a small amount of air output, so that when the user inflates the tire, it takes a lot of time to reciprocate the pump, which is not convenient.

The present invention relates to a portable air pump, comprising: an inflation joint set comprising an inflation nozzle and a first one-way valve, the inflation nozzle being capable of connecting an object to be inflated; a cylinder group comprising a first cylinder and a rod a first piston, a second cylinder, a second piston, a second one-way valve and a gas passage, the first cylinder and the rod are connected to the inflatable joint group, the rod is located at the first In the cylinder, the first piston is connected to the rod and slidably disposed on the second cylinder, the second piston sleeves the rod and is slidably disposed on the first cylinder, and the second cylinder is connected to the second piston And being slidable relative to the first cylinder, the first air chamber is formed between the inflatable joint group, the first cylinder, the rod and the second piston, and the air passage is disposed on the rod and the first The piston includes a first segment, a second segment and a third segment, the first segment, the second segment and the third segment are in communication with each other, and the first segment is unidirectionally connected via the first one-way valve The air nozzle, the second section is connected to the first air chamber, and the second one-way valve is accommodated in the third section An end cap group disposed at the one end of the second cylinder opposite to the second piston and including a vent hole and a sliding button, the end cap group, the second cylinder and the first piston form a second gas a second chamber communicating with the third section of the gas passage and unidirectionally communicating the first section via the second one-way valve, and the second chamber communicates with the venting opening, the slider being capable of being opposite to the venting opening The end cap group slides to selectively open or close the venting hole; the portable pump can be switched between a fast inflating position and a high pressure pumping position. When the portable inflator is in the fast inflating position, the sliding button closes the air venting hole, and the first cylinder and the second cylinder are relatively reciprocally slidable to generate pressure gas in the first air chamber and the second air chamber. The pressure gas of the first air chamber enters the second section of the gas passage and flows to the first section, and the pressure gas of the second gas chamber enters the third section of the gas passage and passes through the unidirectional passage a second one-way valve flows to the first stage, and the pressure gas in the first section of the gas passage is unidirectionally entered into the inflation nozzle of the inflation joint group via the first one-way valve to be inflated into the object to be inflated, When the portable pump is located in the high-pressure airing position, the sliding button opens the air venting hole, and the first cylinder and the second cylinder are relatively reciprocally slidable to cause the first air chamber to generate a pressure gas, the second gas The gas in the chamber is discharged through the vent hole, the pressure gas of the first air chamber enters the second section of the gas passage and flows to the first section, and the pressure gas in the first section of the gas passage passes through the first a one-way valve unidirectionally enters the inflation of the inflatable joint group And the pump to be inflatable.

When the user needs to inflate the tire, the portable inflator is first placed in the quick inflation position, and the sliding button closes the air leakage hole, so that the user only needs to quickly inflate the tire in a short time. Then, the user pushes the slider to open the air vent, so that the portable air pump is switched to the high pressure airing position, and the user can easily pump the tire to a high pressure. The user can easily shift the slider to change the portable pump between the fast inflation position and the high pressure pumping position, which is convenient.

Other objects, advantages, and novel features of the present invention will become apparent from the Detailed Description and the accompanying drawings.

10‧‧‧Inflatable joint group

11‧‧‧Inflatable mouth

12‧‧‧Ontology

13‧‧‧First check valve

14‧‧‧Inflatable passage

20‧‧‧ cylinder group

21‧‧‧First cylinder

22‧‧‧ rods

23‧‧‧First Piston

24‧‧‧Second cylinder

25‧‧‧second piston

26‧‧‧Second check valve

27‧‧‧Gas channel

271‧‧‧ first paragraph

272‧‧‧ second paragraph

273‧‧‧ third paragraph

30‧‧‧End cap group

301‧‧‧ Ventilation holes

31‧‧‧ Inner cover

32‧‧‧ Cover

321‧‧‧Slip hole

322‧‧‧First positioning groove

323‧‧‧Second positioning groove

33‧‧‧ boards

34‧‧‧ slider

341‧‧‧ Sealing Department

342‧‧‧ positioning convex

35‧‧‧Outer tube

A1‧‧‧First air chamber

A2‧‧‧ second air chamber

Figure 1: The stereoscopic view of the portable pump of this creation.

Figure 2: An exploded view of the portable pump of this creation.

Figure 3: A cross-sectional view taken from Figure 1.

Figure 4: Schematic diagram of the use of the portable pump of the present invention, indicating that the portable pump is in a fast inflated position.

Figure 5: Schematic diagram of the use of the portable pump of the present invention, indicating that the portable pump is located in the high pressure pumping position.

The techniques, means, and effects of the present invention are described in detail with reference to the accompanying drawings.

Refer to Figures 1 to 3. The portable air pump of the present invention comprises: an inflatable joint group 10, a cylinder group 20 and an end cap group 30, and the inflatable joint group 10 and the end cap group 30 are respectively disposed at opposite ends of the cylinder group 20, and the inflatable joint group 10 can be connected to the object to be inflated, and the user can drive the cylinder group 20 to repeatedly sway to generate a pressurized gas, and the pressurized gas is pumped into the object to be inflated via the inflated joint group 10.

The inflating nozzle set 10 includes an inflating nozzle 11, a body 12, a first one-way valve 13 and an inflating passage 14, and the body 12 is connected to the inflating nozzle 11 and the cylinder block 20, respectively. The inflator 11 and the body 12 are disposed on the body 12 adjacent to one end of the cylinder block 20 and connected to the inflation passage 14 , and the inflator 11 is capable of connecting the object to be inflated.

The cylinder block 20 includes a first cylinder 21, a rod 22, a first piston 23, a second cylinder 24, a second piston 25, a second check valve 26 and a gas passage 27, the first cylinder One end of a cylinder 21 and one end of the rod 22 are connected to the body 12, and the rod 22 is located in the first cylinder 21, and the first piston 23 is connected to the rod 22 opposite to one end of the body 12, the first The second piston 25 is disposed in the first cylinder 21 and is slidably disposed in the first cylinder 21, and the second cylinder 24 is coupled to the second piston 25 and is capable of being opposite to the first cylinder 21, the second cylinder 24 is connected to the end cap group 30 opposite to one end of the second piston 25, the first piston 23 is movably disposed in the second cylinder 24, and the air passage 27 is disposed at the end The rod 22 and the first piston 23 unidirectionally communicate with the inflation passage 14 via the first one-way valve 13. In the embodiment, a first air chamber A1 is formed between the body 12, the first cylinder 21, the rod 22 and the second piston 25. The end cap group 30, the second cylinder 24 and the first A second air chamber A2 is formed between the pistons 23.

The air passage 27 includes a first section 271, a second section 272 and a third section 273. The first section 271, the second section 272 and the third section 273 are in communication with each other. The first section 271 and The third section 273 is respectively located at opposite ends of the rod 22 and extends axially along the rod 22, and the third section 273 extends through the first piston 23, and the first section 271 passes through the first one-way valve 13 unidirectionally communicating with the inflation passageway 14, the second section 272 extending along the radial direction of the rod member 22 and communicating with the first plenum A1, the second one-way valve 26 being received adjacent to the third section 273 One end of the first piston 23, the second air chamber A2 communicates with the third section 273 of the gas passage 27 and unidirectionally communicates the first section 271 via the second one-way valve 26.

The end cap assembly 30 includes an inner cover 31, an outer cover 32, a plate member 33, a slider 34 and an outer tubular member 35. The inner cover 31 is disposed on the second cylinder 24 opposite to the second piston 25. In one end, the outer cover 32 is sleeved with the inner cover 31. The plate member 33 is disposed between the inner cover 31 and the outer cover 32. The sliding button 34 is slidably disposed on the outer cover 32 and abuts the plate One end of the outer tube member 35 is connected to the outer cover 32 and can be gripped by a user. The outer tube member 35 slidably sleeves the first cylinder 21, and the end cap group 30 further includes a vent hole 301. The air leakage hole 301 extends through opposite ends of the inner cover 31 opposite to the plate member 33. The air leakage hole 301 communicates with the second air chamber A2. The sliding button 34 slides relative to the outer cover 32 to selectively The vent hole 301 is opened or closed. In the embodiment, the inner chamber 31, the second cylinder 24 and the first piston 23 form the second air chamber A2.

The outer cover 32 includes a sliding hole 321 , at least one first positioning groove 322 and at least one second positioning groove 323 . The sliding hole 321 extends through opposite ends of the outer cover 32 , and the sliding button 34 is slidably The first positioning groove 322 and the second positioning groove 323 are disposed on the outer cover 32 adjacent to one end of the inner cover 31 and located on the side of the sliding hole 321 . In this embodiment, the number of the first positioning grooves 322 is two, and the number of the second positioning grooves 323 is two, and the sliding holes 321 are located between the two first positioning grooves 322 and The two second positioning grooves 323 are between.

The sliding button 34 includes a sealing portion 341 and at least one positioning convex portion 342. The sealing portion 341 is disposed at one end of the sliding plate 34 adjacent to the plate member 33 and slidably abuts against the plate member 33. The positioning convex portion 342 The slider 34 is disposed adjacent to one end of the plate member 33 and located on one side of the sealing portion 341. The positioning protrusion 342 selectively latches the first positioning groove 322 and the second positioning groove 323. In this embodiment, the sealing portion 341 is an O-ring. When the sliding button 34 opens the vent hole 301, the sealing portion 341 is located on one side of the vent hole 301. When the sliding button 34 closes the vent hole 301, The sealing portion 341 surrounds the air venting hole 301 . The number of the positioning convex portions 342 is two, and the sealing portion 341 is located between the two positioning convex portions 342 .

Reference is made to Figures 4 and 5 in succession. The portable pump is capable of changing between a fast inflated position (Fig. 4) and a high pressure pumping position (Fig. 5). When the portable inflator is in the fast inflating position, the sliding button 34 closes the air venting hole 301, and the positioning convex portion 342 of the sliding button 34 latches the first positioning groove 322 of the outer cover 32, so that the sealing The first portion 21 and the second cylinder 24 are relatively reciprocally slidable so that the first air chamber A1 and the second air chamber A2 generate a pressurized gas, and the first air chamber A1 is surrounded by the air vent 301. The pressurized gas enters the second section 272 of the gas passage 27 and flows to the first section 271, and the pressurized gas of the second gas chamber A2 enters the third section 273 of the gas passage 27 and passes through the first section The two-way valve 26 flows to the first section 271, and the pressure gas in the first section 271 of the gas passage 27 flows unidirectionally through the first one-way valve 13 to the inflation passage 14, and then passes through the The inflator 11 is pumped into the object to be inflated. When the user When the portable air pump is to be changed from the fast inflation position to the high pressure airing position, the sliding button 34 is pushed out, so that the positioning convex portion 342 is disengaged from the first positioning groove 322 and faces the second positioning groove 323. The direction of the sliding portion 341 is slipped relative to the plate member 33 to expose the vent hole 301. When the portable pump is in the high-pressure airing position, the sliding button 34 opens the air venting hole 301, and the positioning convex portion 342 of the sliding button 34 chucks the second positioning groove 323 of the outer cover 32, so that the sealing The portion 341 is located on one side of the vent hole 301, and the first cylinder 21 and the second cylinder 24 are relatively reciprocally slidable such that the first plenum A1 generates pressurized gas, and the gas in the second plenum A2 passes through the The vent hole 301 is vented, and the pressure gas of the first plenum A1 enters the second section 272 of the gas passage 27 and flows to the first section 271, and the pressure gas in the first section 271 of the gas passage head 27 The first one-way valve 13 flows unidirectionally to the inflation passage 14, and then inflates the gas to be inflated through the inflation nozzle 11.

In summary, the present portable pump has the following advantages:

1. When the user needs to inflate the tire, the portable air pump is first placed in the fast inflation position, and the sliding button 34 closes the air leakage hole 301, and the pressure in the first air chamber A1 and the second air chamber A2. The gas is simultaneously inflated into the tire, and the user only needs to quickly inflate the tire in a short time compared to the high-pressure pumping position. Then, the user pushes the slider 34 to open the air vent 301, so that the portable air pump is switched to the high pressure airing position, only the pressure gas of the first air chamber A1 is blown into the tire, and the second air chamber A2 The gas inside is vented through the vent hole 301, and the user can easily pump the tire to a high pressure as compared with the fast inflation position.

2. The end cap group 30 is disposed at one end of the cylinder assembly 20 opposite to the inflation joint group 10, and the slider 34 is opposite to the second piston 25 at the end of the second cylinder 24, so that the user During the pumping process, the slider 34 can be easily moved to change the portable pump between the fast inflation position and the high pressure pumping position.

However, the foregoing is only a preferred embodiment of the present invention, and the scope of the present invention may not be limited thereto, so any change in the numerical value or replacement of the equivalent element, or an equivalent change according to the scope of the patent application of the present invention. And the modifications should still be covered by this creation patent.

10‧‧‧Inflatable joint group

11‧‧‧Inflatable mouth

12‧‧‧Ontology

13‧‧‧First check valve

14‧‧‧Inflatable passage

21‧‧‧First cylinder

22‧‧‧ rods

23‧‧‧First Piston

24‧‧‧Second cylinder

25‧‧‧second piston

26‧‧‧Second check valve

27‧‧‧Gas channel

271‧‧‧ first paragraph

272‧‧‧ second paragraph

273‧‧‧ third paragraph

30‧‧‧End cap group

301‧‧‧ Ventilation holes

31‧‧‧ Inner cover

32‧‧‧ Cover

33‧‧‧ boards

34‧‧‧ slider

341‧‧‧ Sealing Department

35‧‧‧Outer tube

Claims (8)

A portable inflator includes: an inflation joint set including an inflation nozzle and a first one-way valve, the inflation nozzle and the first one-way valve are respectively located at opposite ends of the inflation joint group, the inflation nozzle Being capable of connecting an object to be inflated; a cylinder group comprising a first cylinder, a rod, a first piston, a second cylinder, a second piston, a second one-way valve and a gas passage, the first a cylinder is connected to the rod assembly, the rod member is located in the first cylinder, the first piston is connected to the rod member and slidably disposed on the second cylinder, and the second piston sleeves the rod member And slidingly disposed on the first cylinder, the second cylinder is coupled to the second piston and is slidable relative to the first cylinder, and the inflatable joint set, the first cylinder, the rod and the second piston are formed a first air chamber, the air passage is disposed on the rod and the first piston and includes a first segment, a second segment and a third segment, the first segment, the second segment and the third segment The segments are in communication with each other, the first segment unidirectionally communicating the aeration nozzle via the first one-way valve, The second section is connected to the first air chamber, and the second one-way valve is accommodated in the third section; the one end cover group is disposed on the second cylinder opposite to one end of the second piston and includes a vent hole and a a slider, the end cap group, the second cylinder and the first piston form a second air chamber, the second air chamber communicates with the third section of the air passage and is unidirectional via the second check valve Connected to the first segment, and the second air chamber communicates with the air venting hole, the sliding button can selectively open or close the air venting hole relative to the end cap group; the portable air pump can be fast Changing between the inflated position and a high-pressure pumping position, when the portable inflator is in the fast inflating position, the sliding button closes the air venting hole, and the first cylinder and the second cylinder are relatively reciprocally slidable to make the first a gas chamber and the second gas chamber generate a pressurized gas, the pressure gas of the first gas chamber enters the second portion of the gas passage and flows to the first portion, and the second gas chamber Pressurizing gas enters the third section of the gas passage and flows unidirectionally through the second one-way valve to the first section, and the pressure gas in the first section of the gas passage is via the first one-way valve Inwardly entering the inflator of the inflating joint group and inflating into the inflating object. When the portable inflating device is in the high pressure inflating position, the sliding button opens the air leakage hole, and the first cylinder and the second cylinder can reciprocate relative to each other Sliding to cause the first gas chamber to generate a pressurized gas, the gas in the second gas chamber is discharged through the gas venting hole, the pressure gas of the first gas chamber enters the second portion of the gas conveying channel and flows to the first And the pressurized gas in the first section of the gas passage is unidirectionally entered into the inflation nozzle of the inflation joint group via the first one-way valve to be inflated into the object to be inflated. The portable inflator of claim 1, wherein the end cap assembly comprises an inner cover and an outer cover, the inner cover is disposed on the second end of the second cylinder opposite to the second piston, and the air leakage hole penetrates the inner hole The outer cover covers the inner cover and includes a sliding hole, and the sliding button is slidably received in the sliding hole. The portable inflator of claim 2, wherein the end cap group comprises a plate member disposed between the inner cover and the outer cover, the air leakage hole penetrating through opposite ends of the plate member, the sliding The button includes a seal that slidably abuts the panel such that the slider selectively opens or closes the vent. The portable inflator of claim 3, wherein the sealing portion is an O-ring, the sealing portion surrounds the air vent when the portable inflator is in the fast inflating position, when the portable inflator is located In the high pressure pumping position, the sealing portion is located on one side of the vent hole. The portable inflator of claim 2, wherein the outer cover comprises at least one first positioning groove and at least one second positioning groove, and the first positioning groove and the second positioning groove are disposed outside the outer positioning groove The cover is adjacent to one end of the inner cover, and the slider comprises at least one positioning protrusion, the positioning protrusion selectively card The first positioning groove and the second positioning groove, when the portable inflator is in the fast inflating position, the positioning protrusion is engaged with the first positioning groove, when the portable inflator is located at the high pressure The positioning protrusion latches the second positioning groove when the air is in the position. The portable inflator of claim 2, wherein the end cap assembly comprises an outer tubular member, one end of the outer tubular member is connected to the outer cover and can be gripped by a user, and the outer tubular member is slidably sleeved The first cylinder. The portable pump according to any one of claims 1 to 6, wherein the first piston is disposed at one end of the rod opposite to the inflation joint group, and the third section of the gas passage extends through the first piston And the second one-way valve is disposed adjacent to one end of the third piston. The portable inflator of claim 7, wherein the inflatable joint assembly comprises a body and an inflation passage, the body respectively connecting the inflation nozzle, the first cylinder and the rod, and the inflation passage is disposed in the inflation nozzle And the body, the first one-way valve is disposed adjacent to one end of the body of the cylinder and connected to the inflation passage, and the first section of the gas passage is unidirectionally communicated with the inflation passage via the first one-way valve.