Air pump module with vibration reduction structure

Abstract

The utility model discloses an air pump module with a vibration reduction structure, which comprises an air pump shell in which a mounting space is formed for mounting an air pump body; the vibration reduction structure is arranged on the air pump body, the vibration reduction structure is used for making contact with an air pump shell to conduct vibration reduction when the air pump body works, the air pump body comprises a driving piece, the vibration reduction structure comprises a vibration reduction rubber ring arranged on the driving piece in a sleeving mode, and an abutting part is arranged on the inner wall of the vibration reduction rubber ring and makes contact with the driving piece to conduct vibration reduction; a first protruding part is arranged on the outer wall of the vibration reduction rubber ring and abuts against the inner wall of the air pump shell, and the vibration reduction effect on the driving piece is further improved; a third lug boss is arranged on the first lug boss and is in point contact with the inner wall of the air pump shell, so that vibration transmission is reduced; the vibration reduction structure further comprises a second protruding part which is arranged in the circumferential direction of the actuating piece and used for making contact with the inner wall of the air pump shell to achieve vibration reduction. And through the vibration reduction structure, resonance between the air pump body and the air pump shell can be reduced when the air pump body works, and then the noise influence can be reduced.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of air pump, in particular to an air pump module with a damping structure. BACKGROUND

[0002] With the development of science and technology, the comfort function of automobile seat is more and more, and the seat waist support, massage, side wing support and other functions are more common comfort functions of seat. In the design of automobile seat, the pneumatic adjusting system is widely used due to its flexibility and comfort. The seat air bag is the core component of the pneumatic adjusting system, and the seat height, angle and other positions are adjusted by inflation and deflation.

[0003] The air pump is the power source of the pneumatic adjusting system, which is responsible for providing the required air pressure for the air bag. During the continuous operation of the air pump device, the air pump will vibrate, and when the amplitude is large, the air pump and the inner wall of the shell may collide with each other, which will generate additional noise and reduce the experience of passengers.

[0004] Therefore, in order to reduce the influence of noise, we propose an air pump module with a damping structure. CONTENT OF THE INVENTION

[0005] In view of the above defects or deficiencies in the prior art, it is desirable to provide an air pump module with a damping structure.

[0006] In a first aspect, the present application provides an air pump module with a damping structure, comprising:

[0007] An air pump shell, an installation space is formed inside the air pump shell for installing an air pump body;

[0008] A damping structure is arranged on the air pump body, and the damping structure is used to contact the inner wall of the air pump shell when the air pump body is working, and to damp the air pump body.

[0009] According to the technical scheme provided by the embodiment of the present application, the air pump body includes a driving member, the damping structure includes a damping rubber ring, the damping rubber ring is sleeved on the driving member, and the outer wall of the damping rubber ring is provided with at least one first protruding part, and the first protruding part is used to abut the inner wall of the air pump shell when the air pump body is working.

[0010] According to the technical scheme provided by the embodiment of the present application, the air pump body further includes a pump head, the pump head includes a pump cover and a gas chamber in opposite connection, the gas chamber is provided with an accommodating space, at least one actuator is arranged in the accommodating space, and the damping structure further includes a second protruding part, the second protruding part is arranged in the circumferential direction of the actuator and extends to the outside of the gas chamber.

[0011] According to the technical scheme provided in the embodiment of the present application, the first protruding part is provided with at least one third protruding part away from one side of the air pump body, the third protruding part is in contact with the inner wall of the air pump shell, and is used for reducing vibration transmission.

[0012] According to the technical scheme provided in the embodiment of the present application, the inner wall of the damping rubber ring is provided with at least two abutting parts, the abutting parts are in contact with the driving part, and a gap exists between the inner wall of the damping rubber ring and the driving part, and the gap is used for heat dissipation.

[0013] According to the technical scheme provided in the embodiment of the present application, the outer wall of the damping rubber ring is further provided with at least one clamping part, and a containing groove corresponding to the clamping part is arranged on the air pump shell, so that the clamping part is in contact with the air pump shell.

[0014] According to the technical scheme provided in the embodiment of the present application, the clamping part is provided with an air inlet hole, which is used for allowing external air to enter the inside of the air pump shell; and one side of the clamping part close to the damping rubber ring is connected with the outer wall of the damping rubber ring through a connecting part, and the connecting part is provided with an air passing hole in communication with the air inlet hole.

[0015] According to the technical scheme provided in the embodiment of the present application, the actuator has a first space, the pump cover is provided with an air hole in communication with the first space, the top of the pump cover is provided with a hose in communication with the air hole, the top of the hose is provided with an adapter pipe in communication therewith, and one end of the adapter pipe away from the hose extends above the air pump shell.

[0016] According to the technical scheme provided in the embodiment of the present application, the damping structure further comprises a damping pad, and the circumferential edge of the damping pad extends to the outside of the pump head, and is used for being in contact with the air pump shell to achieve damping when the air pump body works.

[0017] According to the technical scheme provided in the embodiment of the present application, the damping structure further comprises a damping sleeve, and the damping sleeve is arranged on the pump cover, and is used for being in contact with the air pump shell to achieve damping when the air pump body works.

[0018] In summary, the technical scheme specifically discloses an air pump module with a damping structure, which comprises an air pump shell, an installation space is formed in the air pump shell, and an air pump body is arranged in the installation space, the air pump body comprises a driving part, a damping rubber ring is arranged on the driving part, the inner wall of the damping rubber ring is provided with a plurality of abutting parts, the abutting parts are in contact with the driving part, and are used for effectively damping the driving part, and at the same time, the inner wall of the damping rubber ring is provided with the abutting parts, so that a gap exists between the inner wall of the damping rubber ring and the driving part, and effective heat dissipation of the driving part is ensured; the outer wall of the damping rubber ring is provided with a first protruding part, and the first protruding part is in abutment with the inner wall of the air pump shell, and the damping effect on the driving part is further improved.

[0019] The outer wall of the damping rubber ring is provided with a clamping part which cooperates with the air pump shell to limit the damping rubber ring, ensure air tightness, further reduce vibration, reduce resonance between the damping rubber ring and the driving part, and reduce noise. BRIEF DESCRIPTION OF DRAWINGS

[0020] Other features, objects, and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments, read in conjunction with the accompanying drawings:

[0021] Figure 1 It is an internal structure diagram of the air pump module with a damping structure.

[0022] Figure 2 It is an exploded view of the air pump module with a damping structure.

[0023] Figure 3 It is a sectional view of the air pump module with a damping structure using a second form of damping rubber ring.

[0024] Figure 4 It is an exploded view of the air pump module with a damping structure using a second form of damping rubber ring.

[0025] Figure 5 It is a schematic view of the damping rubber ring in the air pump shell.

[0026] Figure 6 It is an exploded view of the pump head.

[0027] Figure 7 It is a schematic view of the rubber ring.

[0028] Figure 8 It is a schematic view of the second form of rubber ring.

[0029] Figure 9 It is a schematic view of the second form of driving part.

[0030] Figure 10 It is a schematic view of the third form of driving part.

[0031] Figure 11 It is a schematic view of the fourth form of driving part.

[0032] Figure 12 It is a sectional view of the air pump module with a damping structure using a damping sleeve.

[0033] Figure 13 It is an exploded view of the air pump module with a damping structure from another angle.

[0034] The figure labels: 1, air pump shell; 2, driving piece; 3, damping rubber ring; 4, abutting portion; 5, first protruding portion; 6, clamping portion; 7, containing groove; 8, air inlet hole; 9, pump head; 10, pump cover; 11, air chamber; 12, actuator; 13, second protruding portion; 14, air hole; 15, hose; 16, adapter pipe; 17, connecting portion; 18, air passing hole; 19, first clamping groove; 20, second clamping groove; 21, swinging piece; 22, damping sleeve; 23, damping pad; 24, bottom cover; 25, air distribution pad; 26, air distribution layer; 27, clamping piece; 28, third protruding portion; 29, top cover; 1a, first shell; 1b, second shell; 11a, air chamber upper cover; 11b, air chamber lower cover. DETAILED DESCRIPTION

[0035] The application will be further described below in conjunction with the drawings and examples. It can be understood that the specific examples described herein are only used to explain the related application, and not to limit the application. In addition, it should be noted that only the parts related to the application are shown in the drawings for ease of description.

[0036] It should be noted that the examples in the present application and the features in the examples can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in conjunction with the examples.

[0037] Example one

[0038] Please refer to Figures 1 to 7 The air pump module with a damping structure includes:

[0039] The air pump shell 1 is a split structure, as shown in Figures 1 to 3 It can be split into left and right parts. The air pump shell 1 has a first shell 1a and a second shell 1b that are coupled together. The air pump shell 1 forms an installation space inside for installing the air pump body.

[0040] The damping structure is arranged on the air pump body and is made of a material with soft elasticity, such as rubber or silicone. When the air pump body is working, it will vibrate. At this time, the damping structure can contact the inner wall of the air pump shell 1 and produce elastic deformation, consume part of the vibration energy generated by the air pump body, and prevent the air pump body from directly contacting the air pump shell 1 when working. Therefore, the damping structure can reduce the vibration transmitted to the air pump shell 1 to achieve damping of the air pump module and reduce noise.

[0041] The air pump body includes a driving piece 2, which can be an electric motor.

[0042] The damping structure includes a damping rubber ring 3, as shown in Figures 3 to 8As shown, the damping rubber ring 3 is sleeved on the driving member 2, and the inner wall of the damping rubber ring 3 is provided with at least two abutting portions 4, which abut against the side wall of the driving member 2. Optionally, the abutting portion 4 is in the form of a long strip, and the damping rubber ring 3 is made of a material with soft elasticity such as rubber or silica gel.

[0043] Further, since the abutting portion 4 is arranged on the inner wall of the damping rubber ring 3, there is a gap between the inner wall of the damping rubber ring 3 and the driving member 2, so that the driving member 2 can be cooled, and the heat generated by the driving member 2 during operation can be dissipated, thereby ensuring the normal service life of the driving member 2.

[0044] Further, the outer wall of the damping rubber ring 3 is provided with at least one first protruding portion 5, the first protruding portion 5 has two and is arranged opposite on the outer wall of the damping rubber ring 3, and the first protruding portion 5 can abut against the inner wall of the air pump shell 1 during operation of the driving member 2, thereby reducing the vibration transmitted to the air pump shell 1 and effectively damping the vibration.

[0045] Further, the first protruding portion 5 is in the form of a ring, as shown in Figure 5 After the damping rubber ring 3 is sleeved on the driving member 2, the driving member 2 is installed in the air pump shell 1, the ring-shaped first protruding portion 5 is deformed by being extruded by the air pump shell 1, thereby having elasticity, and during operation of the air pump body, the first protruding portion 5 abuts against the air pump shell 1 on one side to prevent the air pump body from directly contacting the air pump shell 1, and has elasticity on the other side, thereby consuming part of the vibration energy generated by the air pump body through elastic deformation, so that the driving member 2 can be effectively damped, and the noise and vibration can be reduced.

[0046] Further, the first protruding portion 5 is in the form of a ring, as shown in Figure 5 After the damping rubber ring 3 is sleeved on the driving member 2, the driving member 2 is installed in the air pump shell 1, the ring-shaped first protruding portion 5 is deformed by being extruded by the air pump shell 1, thereby having elasticity, and during operation of the air pump body, the first protruding portion 5 abuts against the air pump shell 1 on one side to prevent the air pump body from directly contacting the air pump shell 1, and has elasticity on the other side, thereby consuming part of the vibration energy generated by the air pump body through elastic deformation, so that the driving member 2 can be effectively damped, and the noise and vibration can be reduced.

[0047] Further, the outer wall of the damping rubber ring 3 is provided with at least one first protruding portion 5, the first protruding portion 5 has two and is arranged opposite on the outer wall of the damping rubber ring 3, and the first protruding portion 5 can abut against the inner wall of the air pump shell 1 during operation of the driving member 2, thereby reducing the vibration transmitted to the air pump shell 1 and effectively damping the vibration.

[0048] Optionally, as shown in Figure 7 and Figure 8As shown, the clamping portion 6 can be in the form of a circular protrusion or a plate-shaped protrusion, and the accommodating groove 7 and the clamping portion 6 are matched, which can ensure damping and positioning installation; it should be noted that the structure of the clamping portion 6 is not limited to a circular protrusion or a plate-shaped protrusion, and can also be other forms;

[0049] Further, the side of the clamping portion 6 close to the damping rubber ring 3 is connected through the connecting portion 17, the clamping portion 6 is provided with an air inlet hole 8, and the connecting portion 17 is provided with an air passing hole 18 communicated with the air inlet hole, so that the external air enters the air inlet hole 8 and then enters the inside of the air pump shell 1 through the air passing hole 18 to supply air to the air pump body.

[0050] The air pump body further comprises a pump head 9, and the pump head 9 comprises a pump cover 10 and a gas chamber 11 in opposite connection, the pump cover 10 is located at the top of the gas chamber 11, the gas chamber 11 is provided with an accommodating space, and at least one actuator 12 is arranged in the accommodating space, such as Figure 6 、 Figures 9 to 11 As shown, the actuator 12 has four, and the actuator 12 is provided with a plurality of second protruding portions 13 in the circumferential direction, and the second protruding portions 13 extend to the outside of the gas chamber 11; the material of the second protruding portion 13 can be rubber;

[0051] Further, optionally, the second protruding portion 13 has a plurality of shapes, such as Figure 6 As shown, the second protruding portion 13 is in the form of a strip, and a through hole is formed in the second protruding portion 13, which can be elastically deformed when the second protruding portion 13 contacts the inner wall of the air pump shell 1, thereby realizing damping; as Figure 9 As shown, the second protruding portion 13 is in the form of a triangle, which realizes point contact when the second protruding portion 13 contacts the inner wall of the air pump shell 1, reduces the contact area with the shell, and further reduces the vibration transmission; as Figure 10 As shown, the second protruding portion 13 is in the form of an arc structure, which increases the contact area when the second protruding portion 13 contacts the inner wall of the air pump shell 1, and the vibration is effectively offset; as Figure 11 As shown, the second protruding portion 13 is in the form of an arc structure provided with a flange, which increases the contact area with the inner wall of the air pump shell 1 and further enhances the offset effect of the vibration;

[0052] When the air pump body works, the second protruding portion 13 contacts the inner wall of the air pump shell 1, reduces the vibration transmitted to the air pump shell 1, thereby realizing the damping effect, and reducing the vibration and noise;

[0053] Further, when the pump cover 10 and the gas chamber 11 are connected in opposite connection, the edges of the pump cover 10 and the gas chamber 11 are pressed on the second protruding portion 13, thereby isolating the pump cover 10 and the gas chamber 11 to avoid air cross flow;

[0054] Further, the actuator 12 has a first space, and the pump cover 10 is provided with a vent hole 14 in communication with the first space, so that the first space is deformed and recovered constantly, and the gas is pumped to the vent hole 14 constantly through the deformation and recovery of the actuator 12;

[0055] Further, the driving member 2 has a driving end extending into the gas chamber 11 and located below the actuator 12, and is connected with the swing member 21, and the driving member 2 is used to drive the swing member 21 to act to push the actuator 12 to deform and recover constantly;

[0056] It should be noted that the gas chamber 11 is composed of a gas chamber upper cover 11a and a gas chamber lower cover 11b which are buckled to each other, and the swing member 21 is located in the gas chamber lower cover 11b;

[0057] Further, the driving end drives the swing member 21 to act, and the swing member 21 cyclically touches the four actuators 12, so that the four actuators 12 deform and recover in turn, and the gas in the four first spaces is moved to the vent hole 14 constantly. Since the actuator 12 deforms and recovers constantly, vibration is generated, and since the second protruding part 13 abuts against the inner wall of the air pump shell 1, the air pump body is prevented from directly contacting the air pump shell 1, the vibration transmitted to the air pump shell 1 is reduced, and the effect of reducing vibration transmission is achieved.

[0058] As shown in FIGS. Figure 12 and Figure 13 In some embodiments, the damping structure can further include a damping sleeve 22 and a damping pad 23, wherein the damping sleeve 22 is arranged on the top of the pump cover 10 and can contact the inner wall of the air pump shell 1 when the air pump body is working, so as to achieve damping and protect the pump cover 10 from damage caused by knocking;

[0059] The pump cover 10 includes a bottom cover 24, a gas distribution pad 25, the damping pad 23, a gas distribution layer 26 and a top cover 29. The bottom cover 24 is arranged on the top of the actuator 12, and the bottom cover 24 is provided with a gas hole in communication with the first space for the gas to pass through. The gas distribution pad 25 is arranged on the top of the bottom cover 24, and the top of the bottom cover 24 is provided with a mounting position for mounting the gas distribution pad 25. The gas distribution pad 25 is provided with a gas hole for the gas to pass through, so as to guide the gas to flow and ensure the sealing effect of the pump head 9;

[0060] In some embodiments, the damping pad 23 is arranged on the top of the gas distribution pad 25 and is provided with a gas hole for the gas to pass through correspondingly. The circumferential edge of the damping pad 23 extends to the outside of the pump head 9, so as to contact the inner wall of the air pump shell 1 when the air pump body is working and achieve the damping effect. The gas distribution layer 26 is arranged on the top of the damping pad 23 and is provided with a gas hole for the gas to pass through correspondingly, so as to guide the gas to flow and achieve sound reduction. The vent hole 14 is arranged on the top cover 29;

[0061] It should be noted that the damping pad 23 can be arranged between any two adjacent components in the pump cover 10, which is not particularly limited here;

[0062] Therefore, by driving the driving end of the swing member 21 to act, the swing member 21 cyclically touches the four actuators 12, so that the four actuators 12 are deformed and restored in turn, and the gas in the four first spaces continuously passes through the air holes of the bottom cover 24, the air distribution pad 25, the damping pad 23 and the air distribution layer 26, and the air holes 14 of the top cover 29. Due to the continuous deformation and restoration of the actuators 12, vibration is generated, and the second protruding part 13, the damping pad 23 and the damping sleeve 22 can contact the inner wall of the air pump shell 1 when the air pump body is working, thereby reducing the vibration transmitted to the air pump shell 1. Therefore, the effect of reducing vibration transmission and sound reduction is effectively achieved. Similarly, the actuators 12, the damping pad 23 and the damping sleeve 22 are also made of materials such as rubber and silicone, which have soft elasticity, to further improve the damping effect.

[0063] When the air pump body is not working, the damping pad 23, the damping sleeve 22 and the damping structure such as the actuator 12 can be in direct contact with the air pump shell 1, as shown in Figure 3 , or can not be in contact, as shown in Figure 12

[0064] The top of the pump cover 10 is provided with a hose 15 communicating with the air hole 14, and the top of the hose 15 is provided with an adapter pipe 16 communicating therewith. The end of the adapter pipe 16 away from the hose 15 extends above the air pump shell 1;

[0065] Therefore, by deforming the first space, the gas in the first space can enter the hose 15 to transport to the adapter pipe 16 through the air hole 14. The adapter pipe 16 is connected to an external air assembly, such as a massage air bag, a waist support air bag or a side wing support air bag, etc. Therefore, the gas in the first space can be transported to the external air assembly;

[0066] Further, the air pump shell 1 is provided with a first clamping groove 19 and a second clamping groove 20. The first clamping groove 19 is used to clamp the hose 15, and the second clamping groove 20 is used to clamp the adapter pipe 16;

[0067] Therefore, by using the split docking structure of the air pump shell 1, the hose 15 and the adapter pipe 16 can be clamped by the first clamping groove 19 and the second clamping groove 20, thereby achieving quick installation and limiting the hose 15 and the adapter pipe 16. Further, the hose 15 is hung on the air pump shell through the first clamping groove 19, and the hose 15 is also made of materials such as rubber and silicone, which have soft elasticity, thereby further reducing the vibration transmitted to the air pump shell 1 when the air pump body is working, and further improving the damping effect.

[0068] ​It should be noted that, since the pump head 9 is a split structure, in order to ensure the firmness of the assembled pump head 9, a plurality of clamping grooves are arranged on the circumferential side wall of the pump head 9, and clamping pieces 27 are arranged in the clamping grooves, for ensuring the tightness of the assembled pump head 9.

[0069] Working principle: by starting the driving member 2, the driving end drives the swing member 21 to work, the swing member 21 in turn drives the four actuating members 12, the four actuating members 12 in turn deform and recover, thereby enabling the gas in the four first spaces to enter the external gas assembly through the bottom cover 24, the gas distribution pad 25, the damping pad 23, the gas distribution layer 26, the air hole of the top cover 29, the hose 15, the adapter pipe 16 and the external air pipe;

[0070] At the same time, the first protruding part 5 of the damping rubber ring 3, the second protruding part 13 of the actuating member 12, the edge of the damping pad 23 and the damping sleeve 22 all abut against the inner wall of the air pump shell 1, avoiding the direct contact between the air pump body and the air pump shell 1, reducing the transmission of vibration, and the damping rubber ring 3, the actuating member 12, the damping pad 23 and the damping sleeve 22 are all made of materials with soft elasticity such as rubber and silica gel, which can deform elastically when contacting the inner wall of the air pump shell 1, reducing a part of vibration energy, and can realize effective damping and silencing.

[0071] The above description is only the preferred embodiment of the present application and the explanation of the applied technical principles. It should be understood by those skilled in the art that the scope of the application involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, and also covers other technical solutions formed by the combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with the technical features disclosed in the present application (but not limited to) with similar functions to form technical solutions.

Claims

1. A gas pump module with a damping structure, characterized by, Include: Air pump shell (1), the air pump shell (1) inside forms installation space, for installing air pump body; Damping structure, the damping structure is arranged on the air pump body, the damping structure is used for when the air pump body works and the air pump shell (1) inner wall is contacted, the damping structure is used for damping the air pump body.

2. The air pump module with a damping structure according to claim 1, characterized in that, The air pump body includes a driving member (2), the damping structure includes a damping rubber ring (3), the damping rubber ring (3) is sleeved on the driving member (2), and the outer wall of the damping rubber ring (3) is provided with at least one first protruding portion (5), the first protruding portion (5) is used for abutting when the air pump body works and the air pump shell (1) inner wall.

3. The air pump module with a damping structure according to claim 1, characterized in that, The air pump body further includes a pump head (9), the pump head (9) includes a pump cover (10) and a gas chamber (11) opposite, the gas chamber (11) is provided with a containing space, the containing space is provided with at least one actuator (12), the damping structure further includes a second protruding portion (13), the second protruding portion (13) is arranged in the circumferential direction of the actuator (12) and extends to the outside of the gas chamber (11).

4. The air pump module with a damping structure according to claim 2, characterized in that, The first protruding portion (5) is provided with at least one third protruding portion (28) away from one side of the air pump body, and the third protruding portion (28) is in contact with the inner wall of the air pump shell (1).

5. The air pump module with a damping structure according to claim 4, characterized in that, The inner wall of the damping rubber ring (3) is provided with at least two abutting portions (4), the abutting portions (4) are in contact with the driving member (2), and there is a gap between the inner wall of the damping rubber ring (3) and the driving member (2), the gap is used for heat dissipation.

6. The air pump module with a damping structure according to claim 5, characterized in that, The outer wall of the damping rubber ring (3) is further provided with at least one clamping portion (6), and the air pump shell (1) is provided with a containing groove (7) corresponding to the clamping portion (6), so that the clamping portion (6) contacts the air pump shell (1).

7. The air pump module with a damping structure according to claim 6, characterized in that, The clamping portion (6) is provided with an air inlet hole (8), which is used for allowing external air to enter the inside of the air pump shell (1); one side of the clamping portion (6) close to the damping rubber ring (3) is connected to the outer wall of the damping rubber ring (3) through a connecting portion (17), and the connecting portion (17) is provided with a gas passing hole (18) in communication with the air inlet hole (8).

8. The air pump module with a damping structure according to claim 3, characterized in that, The actuator (12) has a first space, the pump cover (10) is provided with an air hole (14) in communication with the first space, the top of the pump cover (10) is provided with a hose (15) in communication with the air hole (14), the top of the hose (15) is provided with an adapter pipe (16) in communication therewith, and one end of the adapter pipe (16) away from the hose (15) extends above the air pump shell (1).

9. The air pump module with a damping structure according to claim 8, characterized in that, The damping structure further includes a damping pad (23), and the circumferential edge of the damping pad (23) extends to the outside of the pump head (9), so as to be in contact with the air pump shell (1) when the air pump body works to realize damping.

10. The air pump module with a damping structure according to claim 9, characterized in that, The damping structure further includes a damping sleeve (22), and the damping sleeve (22) covers the pump cover (10), so as to be in contact with the air pump shell (1) when the air pump body works to realize damping.

Images