CN219262609U - Air pump integrating inflation and deflation - Google Patents

Abstract

The utility model relates to an air pump integrating inflation and deflation, which comprises an upper shell assembly, an inflation and deflation assembly and a motor; the upper shell assembly comprises a first shell and a second shell, the first shell is provided with an air outlet, the second shell is provided with a first air release hole and an air inlet, and the air outlet is communicated with the first air release hole and the air inlet; the inflation and deflation assembly comprises an upper cover, a lower cover, a rubber bowl, a bracket, a piston structure and a lifting eccentric wheel, wherein the rubber bowl is arranged on the upper cover, the upper cover is connected with the second shell, and the rubber bowl is aligned to the air inlet; the rubber bowl is arranged on the bracket, and the bracket is arranged on the lifting eccentric wheel; the rubber bowl is provided with a second air vent, the upper cover is provided with a third air vent, the first air vent, the second air vent and the third air vent are aligned and communicated, the piston structure movably seals the third air vent, and the support is abutted with the piston structure; the motor is in driving connection with the lifting eccentric wheel. The inflation and deflation integrated pump provided by the utility model can integrally realize inflation or deflation functions.

Description

Air pump integrating inflation and deflation

Technical Field

The utility model relates to the technical field of air pumps, in particular to an air pump integrating inflation and deflation.

Background

The existing air pump has a single internal structure and usually has only an inflating function, so that the existing air pump is used by matching an air valve component at an air inlet of an inflating component, and the inflating and deflating functions can be realized.

Disclosure of Invention

The utility model aims to provide an air pump integrating air inflation and air deflation so as to solve the problems in the prior art.

The technical scheme of the utility model is that the air pump integrating inflation and deflation comprises an upper shell assembly, an inflation and deflation assembly and a motor; the upper shell assembly comprises a first shell and a second shell, the first shell is connected with the second shell, the first shell is provided with an air outlet, the second shell is provided with a first air release hole and an air inlet, and the air outlet is communicated with the first air release hole and the air inlet; the air charging and discharging assembly comprises an upper cover, a lower cover, a rubber bowl, a bracket, a piston structure and a lifting eccentric wheel, wherein the rubber bowl is arranged on the upper cover, the upper cover is connected with the second shell, and the rubber bowl is aligned to the air inlet hole; the rubber bowl is arranged at one end of the bracket, the other end of the bracket is arranged on the lifting eccentric wheel, and the lifting eccentric wheel is rotatably arranged on the lower cover; the rubber bowl is provided with a second air vent, the upper cover is provided with a third air vent, the first air vent, the second air vent and the third air vent are aligned and communicated, the piston structure is arranged on one surface of the third air vent, which is opposite to the rubber bowl, the piston structure movably seals the third air vent, and the support is abutted with the piston structure; the motor is connected with the lower cover, and the motor is in driving connection with the lifting eccentric wheel.

In one embodiment, the piston structure comprises a metal block and a plug, the plug is provided with a containing groove, and the metal block is arranged in the containing groove.

In one embodiment, the bracket projection is provided with a conical projection, which is arranged in abutment with the piston structure.

In one embodiment, a plugging groove is formed in one surface of the upper cover facing the lower cover, the third air vent is formed in the bottom of the plugging groove, the plugging groove is communicated with the third air vent, a cylindrical block is arranged around a notch of the plugging groove in a protruding mode, a round hole is formed in the periphery of the notch of the plugging groove, the cylindrical block is correspondingly inserted into the round hole, and the plugging groove is at least partially and movably sealed by the piston structure.

In one embodiment, the lifting eccentric wheel is provided with an eccentric hole, steel balls are arranged in the eccentric hole, one end of the support is inserted into the lifting eccentric wheel, and the support is in butt joint with the steel balls.

In one embodiment, the upper cover bulge is provided with a limit bump, a limit groove is formed in a corresponding position of the rubber bowl, and the limit bump is arranged in the limit groove.

In one embodiment, the lower cover is provided with a rotary groove, the bottom of the rotary groove is provided with a transmission hole, the lifting eccentric wheel is rotatably arranged in the rotary groove, and a transmission shaft of the motor penetrates through the transmission hole and is in driving connection with the lifting eccentric wheel.

In one embodiment, the air pump integrating inflation and deflation further comprises an umbrella-shaped valve, the second shell is provided with a mounting hole, the air inlet hole is formed around the mounting hole, the umbrella-shaped valve is inserted into the mounting hole, and the umbrella-shaped valve movably seals the air inlet hole.

In one embodiment, a movable groove and an air passage are formed in one surface of the first shell, which faces the second shell, the umbrella-shaped valve is movably arranged in the movable groove, the air passage is used for communicating the air outlet with the movable groove, and the movable groove is communicated with the air inlet hole.

The beneficial effects provided by the utility model are as follows: through set up the lift eccentric wheel in filling gassing integrative pump, and the lift eccentric wheel can realize rising or decline through the corotation and the reversal of motor to can drive the support through rising or decline of lift eccentric wheel and rise or decline, and support and piston structure activity butt, thereby can control whether the third bleed hole is opened. Specifically, when the power is connected with the motor, the motor drives the lifting eccentric wheel to rotate forward, the lifting eccentric wheel rotates forward to lift, the lifting support is driven to rotate and lift, the lifting support props against the piston structure to seal the third air release hole, the rotating support drives the rubber bowl to inflate, and therefore the inflation and deflation integrated pump is achieved. When the power supply is reversely connected with the motor, the motor drives the lifting eccentric wheel to reversely rotate, the lifting eccentric wheel to reversely rotate can be lowered, the support is driven to be lowered, the lowered support can not prop against the piston structure, the piston structure can not seal the third air vent, and accordingly the air release function is achieved. According to the inflation and deflation integrated pump provided by the utility model, through the built-in inflation and deflation assembly, inflation or deflation can be realized by controlling the forward rotation or the reverse rotation of the motor, an external air valve is not needed, and the space is saved.

Drawings

FIG. 1 is a schematic perspective view of an air pump with integrated air inflation and deflation in one direction according to an embodiment;

FIG. 2 is a schematic view of an exploded perspective view of an air pump with integrated inflation and deflation in one direction according to an embodiment;

FIG. 3 is a schematic view showing an exploded perspective view of an air pump with integrated air inflation and deflation in another direction according to an embodiment;

fig. 4 is a schematic perspective exploded view of the upper cover and the piston structure in one direction in an embodiment.

In the attached drawings, 10, an air pump integrating air charging and air discharging; 100. an upper housing assembly; 110. a first housing; 111. an air outlet; 112. a movable groove; 113. an airway; 120. a second housing; 121. a first bleed hole; 122. an air inlet hole; 123. a mounting hole; 200. an inflation and deflation assembly; 210. an upper cover; 211. a third bleed hole; 212. a limit bump; 213. plugging the groove; 214. a cylindrical block; 220. a lower cover; 221. a transmission hole; 230. a rubber bowl; 231. a second bleed hole; 232. a limit groove; 240. a bracket; 241. conical protruding blocks; 250. a piston structure; 251. a metal block; 252. a plug; 253. a receiving groove; 254. a round hole; 260. lifting the eccentric wheel; 261. an eccentric hole; 262. steel balls; 300. a motor; 400. an umbrella valve.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The technical solution of the present utility model will be further described below with reference to the accompanying drawings of the embodiments of the present utility model, and the present utility model is not limited to the following specific embodiments.

It should be understood that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components. In the description of the present utility model, it should be understood that, if there are terms such as "upper", "lower", "front", "rear", "left", "right", "top", "bottom", etc., that indicate an azimuth or a positional relationship based on the directions or the positional relationships shown in the drawings, it is only for convenience of describing the present utility model and simplifying the description, but not for indicating or suggesting that the apparatus or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth, so that the terms describing the positional relationship in the drawings are merely for exemplary illustration and should not be construed as limitations of the present patent, and that the specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.

In one embodiment, as shown in fig. 1, 2, 3 and 4, an air pump 10 integrating air inflation and deflation includes an upper housing assembly 100, an air inflation and deflation assembly 200 and a motor 300; the upper housing assembly 100 comprises a first housing 110 and a second housing 120, the first housing 110 is connected with the second housing 120, the first housing 110 is provided with an air outlet 111, the second housing 120 is provided with a first air release hole 121 and an air inlet 122, and the air outlet 111 is communicated with the first air release hole 121 and the air inlet 122; the inflation and deflation assembly 200 comprises an upper cover 210, a lower cover 220, a rubber bowl 230, a bracket 240, a piston structure 250 and a lifting eccentric wheel 260, wherein the rubber bowl 230 is arranged on the upper cover 210, the upper cover 210 is connected with the second shell 120, and the rubber bowl 230 is aligned with the air inlet hole 122; the rubber bowl 230 is arranged at one end of the bracket 240, the other end of the bracket 240 is arranged on the lifting eccentric wheel 260, and the lifting eccentric wheel 260 is rotatably arranged on the lower cover 220; the rubber bowl 230 is provided with a second air vent 231, the upper cover 210 is provided with a third air vent 211, the first air vent 121, the second air vent 231 and the third air vent 211 are aligned and communicated, the piston structure 250 is arranged on one surface of the third air vent 211, which is opposite to the rubber bowl 230, the piston structure 250 movably seals the third air vent 211, and the bracket 240 is abutted with the piston structure 250; the motor 300 is connected with the lower cover 220, and the motor 300 is in driving connection with the lifting eccentric 260.

Specifically, by arranging the lifting eccentric wheel 260 in the inflation and deflation integrated pump, the lifting eccentric wheel 260 can ascend or descend through the forward rotation and the reverse rotation of the motor 300, so that the bracket 240 can be driven to ascend or descend through the ascending or descending of the lifting eccentric wheel 260, and the bracket 240 is movably abutted with the piston structure 250, so that whether the third deflation hole 211 is opened or not can be controlled. Specifically, when the power supply is connected to the motor 300, the motor 300 drives the lifting eccentric wheel 260 to rotate forward, the lifting eccentric wheel 260 rotates forward to lift, the support 240 is driven to rotate and lift, the lifting support 240 abuts against the piston structure 250 to seal the third air release hole 211, the rotating support 240 drives the rubber bowl 230 to inflate, and therefore the inflation and deflation integrated pump is achieved. When the power is reversely connected to the motor 300, the motor 300 drives the lifting eccentric wheel 260 to rotate reversely, and the lifting eccentric wheel 260 rotates reversely to lower, so that the support 240 is driven to lower, and the lowered support 240 does not prop against the piston structure 250, so that the piston structure 250 cannot seal the third air release hole 211, and the air release function is realized. According to the inflation and deflation integrated pump provided by the utility model, through the built-in inflation and deflation assembly 200, inflation or deflation can be realized by controlling the forward rotation or the reverse rotation of the motor 300, an external air valve is not needed, and the space is saved.

In the present embodiment, since the first air release hole 121, the second air release hole 231, and the third air release hole 211 are disposed in communication, and the first air release hole 121 is disposed in communication with the air outlet 111, the air outlet 111 is disposed in communication with the third air release hole 211. When the third gas release holes 211 are blocked, gas cannot be discharged from the gas outlet 111 through the third gas release holes 211. When the third gas release holes 211 are not blocked, gas can be discharged from the gas outlet 111 through the third gas release holes 211.

In one embodiment, the lifting eccentric wheel 260 includes an eccentric wheel lower cover and an eccentric wheel lower cover, a connecting shaft is convexly arranged in the middle of the eccentric wheel lower cover, a connecting groove is formed in the lifting eccentric wheel 260 wheel upper cover 210, and the connecting shaft is inserted into the connecting groove; the periphery of the eccentric wheel lower cover is provided with an annular slope and a blocking block in a protruding mode, the height of the annular slope is gradually reduced from one side of the blocking block to the other side of the blocking block in a surrounding mode, the side edge of the eccentric wheel lower cover is provided with a protruding block in a protruding mode, and the protruding block is arranged on the annular slope in a sliding mode. Specifically, when the power electrode is connected to the motor 300, the motor 300 drives the eccentric wheel lower cover to rotate in one direction, and when one surface of the blocking block is abutted to one surface of the protruding block of the eccentric wheel lower cover, the eccentric wheel lower cover drives the eccentric wheel lower cover to rotate. When the electrodes are reversely connected with the motor 300, the motor 300 can be used for driving the eccentric wheel lower cover to rotate towards the other direction, and when the eccentric wheel lower cover rotates to the condition that the other surface of the blocking block is abutted with the other surface of the protruding block of the eccentric wheel lower cover, the eccentric wheel lower cover can drive the eccentric wheel lower cover to rotate. And because the annular slope is the slope that encircles and set up in the eccentric wheel lower cover, namely the blocking block both sides the annular slope highly different, and the lug of eccentric wheel lower cover is the slip setting in on the annular slope, therefore when motor 300 just connects with the contrary, the eccentric wheel lower cover drives the eccentric wheel lower cover rotates the in-process, the eccentric wheel lower cover is relative the eccentric wheel lower cover highly different, namely realizes the lift function of lift eccentric wheel 260.

In order to improve the wear resistance of the piston structure 250 and to improve the sealing performance of the piston structure 250, in one embodiment, as shown in fig. 4, the piston structure 250 includes a metal block 251 and a plug 252, wherein the plug 252 is provided with a receiving groove 253, and the metal block 251 is disposed in the receiving groove 253. Specifically, the accommodating groove 253 is formed on a surface of the plug 252 facing the bracket 240, and the metal block 251 is disposed in the accommodating groove 253. The metal block 251 is movably abutted with the third air outlet hole, and the plug 252 is used for movably sealing the third air outlet hole. By providing the metal block 251 to abut against the bracket 240, the bracket 240 needs to be rotated, and thus the wear resistance of the piston structure 250 can be improved when the metal block 251 is provided to abut against the bracket 240. While the softer plug 252 provides a better removable seal for the third vent.

In this embodiment, the plug 252 is made of rubber or silica gel, and the metal block 251 is made of copper. By selecting rubber or silica gel as the material of the plug 252, the plug 252 is softer, and the third air outlet hole can be better sealed. And by selecting metallic copper as the material of the metal block 251, the metal block 251 has higher wear resistance, so that the metal block 251 is more wear-resistant in the process of rotating and abutting the bracket 240 with the metal block 251, and the service life of the metal block 251 is prolonged.

In order to enable better rotation during abutment of the support 240 with the piston structure 250, in one embodiment, as shown in fig. 2, the support 240 is convexly provided with conical projections 241, and the conical projections 241 are disposed in abutment with the piston structure 250. Specifically, the conical bump 241 is disposed at the middle of the bracket 240, and the top of the conical bump 241 is a plane. When the support 240 rotates in abutment with the piston structure 250, the conical bump 241 makes a smaller contact area with the piston structure 250, thereby enabling the support to rotate better, while reducing wear between the support 240 and the piston structure 250.

In order to enable the piston structure 250 to accurately seal the third vent hole 211, in one embodiment, as shown in fig. 4, a plugging groove 213 is formed in a surface of the upper cover 210 facing the lower cover 220, the third vent hole 211 is formed in a bottom of the plugging groove 213, the plugging groove 213 is communicated with the third vent hole 211, a cylindrical block 214 is protruding around a notch of the plugging groove 213, a circular hole 254 is formed in the piston structure 250, the cylindrical block 214 is correspondingly inserted into the circular hole 254, and the piston structure 250 at least partially movably seals the plugging groove 213. Specifically, with the above arrangement, the piston structure 250 can be accurately mounted at the notch of the blocking groove 213. In this way, the third vent hole 211 can be sealed by pushing the piston structure 250 to move toward the plugging groove 213.

In this embodiment, as shown in fig. 4, a flow groove is formed in the wall of the sealing groove 213, and the flow groove is disposed in communication with the sealing groove 213 and the third air vent 211. Specifically, when the piston structure 250 is plugged into the blocking groove 213 and seals the third vent hole 211, the flow-through groove and the blocking groove will be blocked and isolated by the piston structure 250, and the flow-through groove and the blocking groove will not communicate at this time. When the air pump 10 with integrated inflation and deflation needs to deflate, the bracket 240 will not jack up the piston structure 250, and air flows into the plugging groove 213 through the circulation groove, so as to balance the internal and external air pressures of the plugging groove; thereby allowing the piston structure 250 to quickly and naturally drop from the plugging slot 213 without being lifted up by the support 240.

In order to make the lifting eccentric wheel 260 better drive the support 240 to rotate, in one embodiment, as shown in fig. 2, the lifting eccentric wheel 260 is provided with an eccentric hole 261, a steel ball 262 is disposed in the eccentric hole 261, one end of the support 240 is inserted into the lifting eccentric wheel 260, and the support 240 abuts against the steel ball 262. Specifically, the eccentric hole 261 is formed in the elevating eccentric 260 in a slant manner, so that the rotation shaft of the bracket 240 is inserted into the eccentric hole 261 in a slant manner. Meanwhile, the steel balls 262 are arranged in the eccentric holes 261, so that friction force between the support 240 and the lifting eccentric wheel 260 can be reduced, the lifting eccentric wheel 260 can better drive the support 240 to rotate, and abrasion between the rotating shaft of the support 240 and the lifting eccentric wheel 260 is reduced.

In order to align the rubber bowl 230 on the upper cover 210, in one embodiment, as shown in fig. 2, the upper cover 210 is provided with a limit bump 212, a limit groove 232 is formed at a corresponding position of the rubber bowl 230, and the limit bump 212 is disposed in the limit groove 232. Specifically, three limit protrusions 212 are disposed on the periphery of the upper cover 210, and three limit grooves 232 are correspondingly disposed on the periphery of the rubber bowl 230. When the rubber bowl 230 is mounted on the upper cover 210, each of the limit protrusions 212 is disposed in one of the limit grooves 232, so that the rubber bowl 230 can be accurately mounted on the upper cover 210. So that the offset phenomenon of the rubber bowl 230 can be prevented when the rubber bowl 230 is pressed.

In order to enable the lifting eccentric 260 to rotate on the lower cover 220, in one embodiment, as shown in fig. 3, the lower cover 220 is provided with a rotating groove, a transmission hole 221 is formed at the bottom of the rotating groove, the lifting eccentric 260 is rotatably disposed in the rotating groove, and a transmission shaft of the motor 300 passes through the transmission hole 221 and is in driving connection with the lifting eccentric 260. Specifically, the lifting eccentric wheel 260 is provided with a mounting block in a protruding manner, and the mounting block is rotatably arranged in the rotary groove. Meanwhile, the lifting eccentric wheel 260 is provided with a driving hole at the position of the mounting block, and the transmission shaft of the motor 300 is inserted into the driving hole through the transmission hole 221, so that the motor 300 can drive the lifting eccentric wheel 260 to rotate on the lower cover 220 better.

In order to avoid the air flowing back to the rubber bowl 230, in one embodiment, as shown in fig. 2 and 3, the air pump 10 with integrated air inflation and deflation further includes an umbrella valve 400, the second housing 120 is provided with a mounting hole 123, the air inlet 122 is provided around the mounting hole 123, the umbrella valve 400 is inserted into the mounting hole 123, and the umbrella valve 400 movably seals the air inlet 122. Specifically, when the air pump 10 with integrated inflation and deflation is inflated, the rubber bowl 230 will inflate the air inlet 122, and the inflated air will jack the umbrella valve 400, so that the jack umbrella valve 400 does not seal the air inlet 122, and the air inlet 122 can pass through the air, and the passed air is finally discharged out of the air pump 10 with integrated inflation and deflation through the air outlet 111. When the air pump 10 with the integrated air inflation and deflation functions is deflated by external equipment, the air enters the air pump 10 with the integrated air inflation and deflation functions from the air outlet 111, so that the air presses down the umbrella-shaped valve 400 onto the second shell 120, at the moment, the umbrella-shaped valve 400 seals the air inlet 122, and the air cannot enter the rubber bowl 230 from the air inlet 122, thereby realizing the effect of preventing the air from flowing back.

In order to improve the air tightness of the air pump 10 with integrated inflation and deflation, in one embodiment, as shown in fig. 3, a movable groove 112 and an air channel 113 are formed on a surface of the first housing 110 facing the second housing 120, the umbrella-shaped valve 400 is movably disposed in the movable groove 112, the air channel 113 is used for communicating the air outlet 111 and the movable groove 112, and the movable groove 112 is communicated with the air inlet hole 122. Specifically, when the first housing 110 and the second housing 120 are connected, the movable groove 112 and the air passage 113 will be covered by the second housing 120, and at this time, air can only flow between the air outlet 111 and the movable groove 112 through the air passage 113, thereby improving the air tightness of the air pump 10 integrating air inflation and deflation.

In order to enable the air pump 10 with integrated inflation and deflation functions to perform deflation better, in one embodiment, the second housing 120 is provided with an air hole block protruding around the first deflation hole 121, and the first deflation hole 121 is opened on the air hole block. Specifically, the air hole block is inserted in the air outlet 111. By the above arrangement, the first air release holes 121 can be aligned with the air outlets 111, so that the air pump 10 integrating air inflation and air deflation can be better deflated.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (9)

1. An air pump integrating inflation and deflation is characterized by comprising an upper shell assembly, an inflation and deflation assembly and a motor;

the upper shell assembly comprises a first shell and a second shell, the first shell is connected with the second shell, the first shell is provided with an air outlet, the second shell is provided with a first air release hole and an air inlet, and the air outlet is communicated with the first air release hole and the air inlet;

the air charging and discharging assembly comprises an upper cover, a lower cover, a rubber bowl, a bracket, a piston structure and a lifting eccentric wheel, wherein the rubber bowl is arranged on the upper cover, the upper cover is connected with the second shell, and the rubber bowl is aligned to the air inlet hole; the rubber bowl is arranged at one end of the bracket, the other end of the bracket is arranged on the lifting eccentric wheel, and the lifting eccentric wheel is rotatably arranged on the lower cover; the rubber bowl is provided with a second air vent, the upper cover is provided with a third air vent, the first air vent, the second air vent and the third air vent are aligned and communicated, the piston structure is arranged on one surface of the third air vent, which is opposite to the rubber bowl, the piston structure movably seals the third air vent, and the support is abutted with the piston structure;

the motor is connected with the lower cover, and the motor is in driving connection with the lifting eccentric wheel.

2. The inflation and deflation integrated air pump of claim 1, wherein the piston structure comprises a metal block and a plug, the plug is provided with a containing groove, and the metal block is arranged in the containing groove.

3. The inflation and deflation integrated air pump of claim 1, wherein the bracket projection is provided with a conical projection that is disposed in abutment with the piston structure.

4. The air pump integrating inflation and deflation as set forth in claim 1, wherein a blocking groove is formed in one face of the upper cover facing the lower cover, the third deflation hole is formed in the bottom of the blocking groove, the blocking groove is communicated with the third deflation hole, a cylindrical block is arranged around the notch of the blocking groove in a protruding mode, a round hole is formed in the piston structure, the cylindrical block is correspondingly inserted into the round hole, and the piston structure at least partially movably seals the blocking groove.

5. The air pump integrating inflation and deflation as set forth in claim 1, wherein the lifting eccentric wheel is provided with an eccentric hole, steel balls are arranged in the eccentric hole, one end of the bracket is inserted into the lifting eccentric wheel, and the bracket is abutted with the steel balls.

6. The air pump integrating inflation and deflation as set forth in claim 1, wherein the upper cover is provided with a limit bump, a limit groove is provided at a corresponding position of the rubber bowl, and the limit bump is provided in the limit groove.

7. The air pump integrating inflation and deflation as set forth in claim 1, wherein the lower cover is provided with a rotary groove, a transmission hole is provided at the bottom of the rotary groove, the lifting eccentric wheel is rotatably provided in the rotary groove, and a transmission shaft of the motor passes through the transmission hole and is in driving connection with the lifting eccentric wheel.

8. The air pump integrating inflation and deflation as set forth in claim 1, further comprising an umbrella valve, wherein the second housing is provided with a mounting hole, the air intake is provided around the mounting hole, the umbrella valve is inserted into the mounting hole, and the umbrella valve movably seals the air intake.

9. The air pump integrating inflation and deflation as set forth in claim 8, wherein a movable groove and an air passage are provided on a surface of the first housing facing the second housing, the umbrella-shaped valve is movably disposed in the movable groove, the air passage is used for communicating the air outlet and the movable groove, and the movable groove is communicated with the air inlet hole.

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