TWI652407B - Atmospheric pump with aeration and pumping function - Google Patents

Abstract

An atmospheric air pump having an inflation and pumping function includes a cylinder base having an assembly hole, a liftable piston unit mounted on the cylinder base, and a gas control mechanism. The piston unit cooperates with the base to define a first air chamber and a second air chamber above the assembly hole. The air control mechanism includes a valve stem rotatably mounted in the assembly hole, the valve stem has two inflation passages and two air suction passages, and the air control mechanism further includes an inflation valve installed in the inflation passages Group, and a pumping valve group installed in the air extraction passages. The cooperation of the foregoing structure can prevent a pipe member connected to the inflated article from moving up and down with the piston unit when the pump is connected with an inflated article, so as to prevent the pipe member from falling off during use, and the pipe member obstructs the operation. Wait for the purpose.

Description

Atmospheric pump with aeration and pumping function

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to an inflator, and more particularly to an air pump that can be switched between an inflation mode and an extraction mode depending on the needs of use.

Referring to Figures 1 and 2, there is a utility model of CN 201610830U, which discloses an inflator 1 capable of generating an atmospheric amount, the inflator 1 comprising a cartridge seat 11 defining an enclosed space 10, and a chamber 11 in the enclosed space 10 a piston 12, a plurality of gas control valves 13 installed in the piston 12, and a grip unit 14 for driving the piston 12 to rise and lower in the closed space 10, the piston 12 dividing the closed space 10 into an upper air The chamber 101 and a lower air chamber 102 have two valve chambers 121 each having an upper valve port 122 communicating with the upper air chamber 101 and a lower valve communicating with the lower air chamber 102. Port 123. The control valve 13 is respectively installed in the upper valve port 122 and the lower valve port 123, and can open and close the corresponding upper valve port 122 and the lower valve port 123.

The grip unit 14 has a grip 141, and an inner tube 142 and an outer tube 143 coaxially fitted and mounted between the piston 12 and the grip 141, the inner tube 142 defining one and one of the inner tubes 142 The valve chamber 121 communicates with the first passage 144. The outer tube 143 and the inner tube 142 cooperate to define a second passage 145 communicating with the other valve chamber 121. The grip 141 has two protrusions on opposite sides. The grip portion 146, a first port 147 communicating with the first passage 144, and a second port 148 communicating with the second passage 145.

When the existing pump 1 is to be inflated, a tube member (not shown) is connected between an inflated article and the second port 148, and then the grip unit 14 is pushed up and down. As shown by the solid arrows in FIG. 2, when the grip unit 14 is moved up, the gas located in the upper air chamber 101 flows through the second passage 145 to the second passage through the cooperation of the control valve 13. The port 148, the external gas enters the first passage 144 via the first port 147, and finally enters the lower plenum 102 for storage. As shown by the imaginary line arrow in FIG. 2, when the grip unit 14 drives the piston 12 to move downward, the gas located in the lower plenum 102 will enter the second passage 145 and flow out through the second passage 148. The gas entering through the first port 147 is stored in the upper air chamber 101 via the first passage 144. If the tube is installed at the first port 147, the gas inside the inflated article is reversed to achieve the purpose of pumping.

Although the foregoing utility model can produce the effects of inflation and pumping, the pipe member connected to the inflatable article is mounted on the first port 147 or the second port 148 of the grip unit 14, so that when the grip is When the unit 14 is displaced up and down, the tube will also move with it. This structure not only makes the pipe fittings inconvenient and inconvenient during operation, but also often pulls the pipe fittings, which is also likely to cause problems such as unstable connection of the pipe fittings and falling off during use.

Accordingly, it is an object of the present invention to provide an air volume pump having an inflation and pumping function that can improve at least one of the disadvantages of the prior art.

Accordingly, the atmospheric pump of the present invention is suitable for inflating and pumping an inflated article, and includes a hub, a piston unit, and a gas control mechanism mounted on the cartridge and adjacent to the lower portion. The cartridge base includes an assembly hole, the piston unit includes a piston seat mounted in the sleeve and reciprocable, the piston seat cooperates with the sleeve to define a first air chamber above the assembly hole, A second air chamber. The gas control mechanism includes a valve stem rotatably mounted in the assembly hole, the valve stem having a first inflation passage, a second inflation passage, a first suction passage and a second suction passage. The mechanism further includes an inflation valve group installed in the first inflation passage and the second inflation passage of the valve stem, and a suction valve group installed in the first suction passage and the second suction passage; The inflator is in an inflated mode, and the external air enters the inflated object through the first inflating passage and the second inflating passage by the cooperation of the inflating valve group, and when the inflating pump is switched to a pumping mode, The gas in the inflated article is discharged through the first suction passage and the second suction passage by the cooperation of the suction valve group.

The utility model has the advantages that: since the gas control mechanism is disposed adjacent to the lower position of the cylinder seat and is independent of the operation of the piston unit, the invention can not only achieve the purpose of inflation and pumping of the atmosphere, but also avoid the connection. The pump and a tube of the inflated article move up and down with the piston unit, thereby achieving easy operation, convenience, and avoiding the purpose of the tube being detached.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to Figures 3, 4 and 5, a first embodiment of the inhaler of the present invention utilizes a manual operation to fill a gas in an inflated article (not shown) or to withdraw gas from the inflated article. The articles may be, for example, inflatable boats, inflatable cushions, inflatable beds, and the like, but the invention is not limited by the foregoing examples. The pump is connected to the inflatable article by a pipe member 9, and comprises: a cylinder block 2, and a piston unit 3 mounted on the cylinder block 2, and a gas control mechanism 4.

The cartridge base 2 includes an upright and hollow inner cylinder wall 21, an outer cylinder wall 22 coaxially surrounding the outer cylinder wall 21, an assembly ring wall 23 disposed about an axis of rotation 20, and two outer The tubular wall 22 projects toward the opposite side and is adjacent to the bottom end of the pedal 24, and an end cap 25 that is disposed over the inner cylinder wall 21 and the outer cylinder wall 22, the end cap 25 having a centrally located support hole 251. The assembly ring wall 23 is interposed between the pedals 24 and has an inner surface 232 defining an assembly hole 231, and a through hole group 230 having two first through holes 233, and Two second through holes 234.

The piston unit 3 includes a piston seat 31 partially extending into the cylinder block 2, and a grip 32 coupled to the piston seat 31. The piston seat 31 has a gas-tight interposed therebetween. And a piston body 311 between the outer cylinder wall 22 and an extension pipe portion 312 which is integrally connected with the piston body 311 and passes through the support hole 251, and is coupled with the grip 32, the piston seat 31 and the base The two phases cooperate to define a first plenum 33 and a second plenum 34. The first air chamber 33 is interposed between the inner cylinder wall 21 and the outer cylinder wall 22 and is located below the piston body 311 while communicating with the first through holes 233. The second air chamber 34 has a first space 341 interposed between the inner tube wall 21 and communicating with the second through holes 234, and a first portion between the extension tube portion 312 and the outer tube wall 22 a second space 342, a third space 343 interposed between the extension tube portion 312 and the inner cylinder wall 21 and communicating with the first space 341, and a plurality of the third space 343 disposed on the extension tube portion 312 and communicating with the second space The space 342 and the communication hole 344 of the third space 343.

The air control mechanism 4 includes a valve stem 41 having a central portion 411 rotatably mounted in the assembly hole 231, and a trigger portion 412 protruding from the central portion 411 toward the radially outer end. The central portion 411 has a first end surface 413, a second end surface 414, a first inflation passage 43, a second inflation passage 44, a first extraction passage 45, and a second extraction passage 40. The first inflating channel 43 and the second inflating channel 44 correspond in a straight line, and the first insufflation channel 45 and the second insufflation channel 40 also correspond in a straight line.

The first inflation channel 43 has a gas inlet 431 adjacent to the first end surface 413, and two first inflation holes 432 respectively communicating with one of the first through holes 233 and one of the second through holes 234. The second inflation passage 44 has a gas outlet 441 adjacent to the second end surface 414, and two second inflation holes respectively communicating with the other of the first through holes 233 and the other of the second through holes 234 442. The first air suction passage 45 has a suction inlet 451 adjacent to the second end surface 414, and two first air suction holes 452 having a suction outlet 401 adjacent to the first end surface 413, and Two second suction holes 402.

The air control mechanism 4 further includes an inflation valve block 46 mounted in the first inflation passage 43 and the second inflation passage 44, and a plurality of inflation valve groups 46 mounted in the first suction passage 45 and the second suction passage 40. An air suction valve group 47 having two first inflation valves 461 respectively installed in the first inflation holes 432, and two second inflations respectively installed in the second inflation holes 442 The valve 462 has two first suction valves 471 respectively installed in the first suction holes 452, and two second suctions respectively installed in the second extraction holes 402. Valve 472.

Referring to FIGS. 4, 5, and 6, in the embodiment, the inflator is in an inflated mode, the first inflating channel 43 and the second inflating channel 44 are adjacent to the upper portion, and the through hole group 230 and the first air chamber are 33 and the first space 341 of the second air chamber 34 are in communication. As shown in FIG. 5, when the piston unit 3 is depressed, the gas located in the first air chamber 33 pushes the corresponding second inflation valve 462, and enters the tube 9 via the second inflation passage 44. And finally enter the inflatable article. On the other hand, the volume of the second space 342 is increased, and the gas in the first space 341 is drawn to the second space 342. Since the gas in the first space 341 is extracted to generate suction, the external The gas may push the corresponding first inflation valve 461 through the first inflation passage 43 and enter the first space 341.

As shown in FIG. 6, when the piston unit 3 is pulled up, the volume of the first air chamber 33 is increased and thus suction is generated. At this time, external gas enters the first inflation passage 43, and the phase is pushed away. The corresponding first inflation valve 461 is then entered into the first air chamber 33. On the other hand, the upwardly moving piston body 311 compresses the second space 342 of the second air chamber 34, so that the internal gas passes through the third space 343 via the communication hole 344, and finally flows to the first space. In the case of 341, in the case where the pressure inside the first space 341 is increased, the gas pushes the corresponding second inflation valve 462, and finally the second inflation passage 44 enters the inflated article via the tube 9. That is, the embodiment can be inflated during the process of moving or pressing the piston unit 3, thereby achieving the purpose of inflating the atmosphere.

Referring to Figures 4, 7, and 8, when the pump of the present embodiment is to be switched from the inflation mode of Figures 5 and 6 to a pumping mode of Figures 7 and 8, the valve stem 41 is rotated to cause the first pumping passage. 45 and the second air suction passage 40 face up to the through hole group 230, and the inflatable article is also connected to the valve stem 41 through the pipe member 9. When the piston unit 3 is pressed down, the gas located in the first gas chamber 33 pushes the corresponding second suction valve 472, and the gas is discharged by the second suction passage 40, and the second space The volume of 342 is increased, and after the suction is generated inside the first space 341, the gas in the first suction passage 45 is drawn into the first space 341 of the second air chamber 34.

When the piston unit 3 is pulled up, a suction force is generated in the first air chamber 33. At this time, the gas located inside the inflatable article pushes the corresponding second suction through the first air suction passage 45. Valve 471 and enters the first plenum 33. On the other hand, the upwardly moving piston body 311 also reduces the volume of the second space 342, and the gas is pumped to the first space 341, and finally the corresponding second suction valve 472 is pushed open, and The gas is sent to the second suction passage 40 and discharged. With such a pull and a pressure, the gas in the inflated article can be quickly extracted.

Referring to Figures 9, 10 and 11, a second embodiment of the inflator of the present invention has a structure similar to that of the first embodiment, i.e., also has the function of inflating and venting the atmosphere. The difference is that a function of ventilation is added, that is, when the pump is switched to a ventilation mode, only the ventilation function can be performed when the piston unit 3 is pulled up, and the pressure is high when the piston unit 3 is pressed down. Inflatable effect.

In order to achieve the above-mentioned purpose, the central portion 411 of the valve stem 41 of the present embodiment further has a first air passage 49 and a second air passage 49' corresponding to the first air passage 49. The first air passage 49 has a first ventilation hole 491 corresponding to one of the first through holes 233, and two second ventilation holes 492 corresponding to the second through holes 234, respectively. The second air passage 49' has a third ventilation hole 493 corresponding to the other of the first through holes 233. The gas control mechanism 4 further includes a gas exchange valve group 48 having a first gas exchange valve 481 installed in the first gas exchange hole 491, and two of which are respectively installed in the second gas exchange valve A second gas exchange valve 482 in the gas hole 492, and a third gas exchange valve 483 installed in the third gas exchange hole 493.

When the pump is in the ventilation mode, the first air passage 49 and the second air passage 49' face upward, and when the piston unit 3 is pressed, the gas located in the first air chamber 33 Pushing the third ventilation valve 483 and pushing the gas toward the inflated object through the second air passage 49', while the second air chamber 34 generates suction because the volume becomes larger, and thus opens the second One of the gas exchange valves 482 allows gas to enter the second gas chamber 34.

When the piston unit 3 is pulled up to increase the volume of the first air chamber 33, the external air pushes the first ventilation valve 481 into the first air chamber 33, and the gas located in the second air chamber 34 Because the other of the second gas exchange valve 482 is compressed and pushed away, that is, in the ventilation mode, the piston unit 3 is moved up only for ventilation, and only the piston unit 3 is depressed. High pressure inflation function.

As can be seen from the above description, the present invention provides the gas control mechanism 4 at a position adjacent to the lower portion of the cartridge base 2, and the valve stem 41, the inflation valve group 46, the suction valve group 47, and the gas exchange valve The combination of the group 48 can not only achieve the purpose of inflation, pumping, and ventilation of the atmosphere, and the cooperation of the foregoing structure can also prevent the connected pipe member 9 from moving up and down with the grip 32, thereby achieving convenient operation and convenience. And to avoid the purpose of the tube 9 falling off.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the simple equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still Within the scope of the invention patent.

2‧‧‧Tucket

20‧‧‧Rotation axis

21‧‧‧ inner wall

22‧‧‧Outer wall

23‧‧‧Assemble the ring wall

230‧‧‧through hole group

231‧‧‧Assembled holes

232‧‧‧ inner surface

233‧‧‧ first through hole

234‧‧‧Second through hole

24‧‧‧ pedal

25‧‧‧End cover

251‧‧‧Support hole

3‧‧‧piston unit

31‧‧‧ piston seat

311‧‧‧Piston body

312‧‧‧Extension tube

32‧‧‧ grip

33‧‧‧First air chamber

34‧‧‧Second chamber

341‧‧‧First space

342‧‧‧Second space

343‧‧‧ Third Space

344‧‧‧Connected holes

4‧‧‧Gas control mechanism

40‧‧‧Separate airway

401‧‧‧Exhaust gas outlet

402‧‧‧Second air vent

41‧‧‧ valve stem

411‧‧‧ Central Department

412‧‧‧Turning Department

413‧‧‧ first end face

414‧‧‧second end face

43‧‧‧First Inflatable Road

431‧‧‧ gas inlet

432‧‧‧First inflatable hole

44‧‧‧Second airway

441‧‧‧ gas export

442‧‧‧Second inflation hole

45‧‧‧First airway

451‧‧‧Exhaust inlet

452‧‧‧First air vent

46‧‧‧Inflatable valve group

461‧‧‧First inflation valve

462‧‧‧Second inflation valve

47‧‧‧Exhaust valve group

471‧‧‧First exhaust valve

472‧‧‧second pumping valve

48‧‧‧Ventilator

481‧‧‧First gas exchange valve

482‧‧‧Second ventilation valve

483‧‧‧The third ventilation valve

49‧‧‧First airway

49’‧‧‧Second airway

491‧‧‧First Vent

492‧‧‧Second ventilation hole

493‧‧‧ Third Vent

9‧‧‧ Pipe fittings

Other features and advantages of the present invention will be apparent from the embodiments of the present invention, wherein: FIG. 1 is a perspective view of the utility model of CN201610830U; FIG. 2 is a combined sectional view of the utility model; A partial exploded view of a first embodiment of the pump, showing the relative relationship between the pump and a tube; FIG. 4 is an incomplete combined sectional view of the first embodiment, and illustrating the pump and Figure 5 is a view similar to Figure 4, the pump is in an inflated mode, and a piston unit of the pump is depressed; Figure 6 is a view similar to Figure 4, the pump also Located in the inflated mode, but the piston unit is pulled up; FIG. 7 is a view similar to FIG. 4, the pump is in an exhaust mode, and the piston unit is depressed; FIG. 8 is a view similar to FIG. The pump is also in the pumping mode, but the piston unit is pulled up; FIG. 9 is a partial exploded perspective view of a second embodiment of the pump of the present invention, illustrating Figure 10 is an incomplete combined sectional view of the second embodiment, the inflator is in a ventilation mode, and the piston unit is depressed; and Figure 11 is a similar view In the view of 10, the pump is also in the ventilation mode, but the piston unit is pulled up.

Claims (7)

An atmospheric pump for inflating and pumping an inflated article, and comprising: a cartridge holder including an assembly hole adjacent to the lower portion; a piston unit including a piston seat mounted in the cartridge seat, the piston The seat cooperates with the base to define a first air chamber and a second air chamber above the assembly hole; and a gas control mechanism including a valve stem rotatably mounted in the assembly hole, the valve The rod has a first inflation channel, a second inflation channel, a first air suction channel and a second air extraction channel, and the air control mechanism further includes a first inflation channel and the second inflation channel mounted on the valve stem An inner inflation valve group, and an air suction valve group installed in the first air suction passage and the second air suction passage; when the air pumping cylinder is in an inflation mode, the external gas is matched by the inflation valve group Entering the inflated article through the first inflation channel and the second inflation channel, and rotating the valve stem to switch the inflator to a pumping mode, and the gas in the inflating member is matched by the pumping valve group through The first and the second exhaust passage discharging exhaust passage. The atmospheric pump according to claim 1, wherein the first inflation passage has two first inflation holes respectively communicating with the first air chamber and the second air chamber, the second inflation passage having two a second inflation hole respectively communicating with the first air chamber and the second air chamber, the inflation valve group having two first inflation valves respectively installed in the first inflation holes, and two respectively mounted on the a second inflation valve in the second inflation hole; when the inflator is in the inflation mode, and the piston unit is depressed, one of the first inflation valves is opened to allow external air to pass through the first The inflation passage enters the second air chamber, and one of the second inflation valves is opened, allowing gas located in the first air chamber to enter the inflatable article from the second inflation passage when the piston unit moves up Opening another one of the first inflation valve to allow external air to enter the first air chamber via the first inflation passage, and the other of the second inflation valves is opened to allow gas located in the second air chamber Entering the inflated article through the second inflation channel. The atmospheric pump according to claim 1 or claim 2, wherein the first air suction passage has two first air suction holes respectively communicating with the first air chamber and the second air chamber, the second pumping The air passage has two second air suction holes respectively communicating with the first air chamber and the second air chamber, and the air suction valve group has two first air suction valves respectively installed in the first air suction holes, and Two second exhaust valves respectively installed in the second exhaust holes; one of the first exhaust valves when the pump is in the pumping mode and the piston unit is depressed Opening, allowing gas inside the inflatable article to enter the second air chamber via the first air suction passage, and one of the second air suction valves is opened to allow gas in the first air chamber to pass the second air suction passage Extracting; when the piston unit moves up, the other of the first suction valve is opened, allowing gas inside the inflatable article to enter the first air chamber via the first air suction passage, and the second air suction valve The other is opened to allow the gas in the second gas chamber to be withdrawn from the second air suction passage. The atmospheric pump according to claim 3, wherein the valve stem further has a first air exchange passage and a second air exchange passage, and the air control mechanism further includes a first air exchange passage installed And the gas exchange valve group in the second air exchange passage, when the air pumping cylinder is in a ventilation mode, by the control of the gas exchange valve group, when the piston unit is moved up, the first air chamber and The gas in the second air chamber can be ventilated by the first air passage, and when the piston unit is depressed, the external gas enters the second air chamber via the first air passage, and is located at the first The gas in the gas chamber enters the inflated article from the second air passage. The atmospheric pump according to claim 4, wherein the first air passage has a first ventilation hole communicating with the first air chamber in the ventilation mode, and two in the ventilation mode a second ventilation hole communicating with the second air chamber, the second air exchange passage having a third ventilation hole communicating with the first air chamber in the ventilation mode, the ventilation valve group having a a first ventilation valve installed in the first ventilation hole, two second ventilation valves respectively installed in the second ventilation holes, and a third installed in the third ventilation hole a gas exchange valve; when the pump is in the ventilation mode and the piston unit moves up, the external gas will push the first gas exchange valve into the first gas chamber, and the gas located in the second gas chamber One of the second gas exchange valves is pushed open and discharged by the first air exchange passage, and when the piston unit is depressed, the gas located in the first air chamber pushes the third air exchange valve And entering the inflated article through the second air passage, while external gas enters the first air passage, and opens the second exchange The other of the gas valves then enters the second gas chamber. The atmospheric pump according to claim 5, wherein the base further comprises an inner cylinder wall, an outer cylinder wall surrounding the outer cylinder wall, a defining the assembly hole and being connected to the inner cylinder wall And an assembly ring wall below the outer cylinder wall, and an end cover covering the inner cylinder wall and the outer cylinder wall, and the piston unit further includes a grip coupled with the piston seat, the piston seat Having a piston body that is movable and airtightly sandwiched between the inner cylinder wall and the outer cylinder wall, and an extension pipe portion that protrudes upward from the piston body and engages with the grip, and The first air chamber is located between the inner cylinder wall and the outer cylinder wall and below the piston body, the second air chamber has a first space defined by the inner cylinder wall, and one of the inner cylinders a second space between the wall and the outer cylinder wall and above the piston body, a third space between the inner cylinder wall and the extension tube portion and communicating with the first space, and at least one of the Extending the tube portion and connecting the second space and the third space The through hole, and the assembly ring wall further has a through hole group having two first through holes communicating with the first air chamber, and the first space of the second and the second air chamber a second through hole; the first inflation channel and the second inflation channel are in communication with the through hole group when the inflator is in the inflation mode, and the first pumping is in the pumping mode when the pump is in the pumping mode The air passage and the second air suction passage are in communication with the through hole group. When the air pump is in the ventilation mode, the first air passage and the second air passage are in communication with the through hole group. The atmospheric pump according to claim 1, wherein the base further comprises an inner cylinder wall, an outer cylinder wall surrounding the outer cylinder wall, a defining the assembly hole and being connected to the inner cylinder wall And an assembly ring wall below the outer cylinder wall, and an end cover covering the inner cylinder wall and the outer cylinder wall, and the piston unit further includes a grip coupled with the piston seat, the piston seat Having a piston body that is movable and airtightly sandwiched between the inner cylinder wall and the outer cylinder wall, and an extension pipe portion that protrudes upward from the piston body and engages with the grip, and The first air chamber is located between the inner cylinder wall and the outer cylinder wall and below the piston body, the second air chamber has a first space defined by the inner cylinder wall, and one of the inner cylinders a second space between the wall and the outer cylinder wall and above the piston body, a third space between the inner cylinder wall and the extension tube portion and communicating with the first space, and at least one of the Extending the tube portion and connecting the second space and the third space The through hole, and the assembly ring wall further has a through hole group having two first through holes communicating with the first air chamber, and the first space of the second and the second air chamber a second through hole; the first inflation channel and the second inflation channel are in communication with the through hole group when the inflator is in the inflation mode, and the first pumping is in the pumping mode when the pump is in the pumping mode The air passage and the second air suction passage are in communication with the through hole group.