Air pump module with capsule type vibration reduction structure

Abstract

The utility model provides an air pump module with a bag type vibration reduction structure, which comprises an air pump shell, an air pump body is arranged in the air pump shell, a first output port is formed in one end of the air pump body, an elastic bag body is arranged at one end close to the first output port, a buffer cavity is formed in the elastic bag body, and an air nozzle is arranged on one side, away from the first output port, of the buffer cavity; the air tap is communicated with a second output port in the air pump shell; the elastic bag body can stretch / contract in the axis direction of the air pump body, and the air pump body is used for pressurizing air so that the air can be pumped out through the first output port, the elastic bag body, the air nozzle and the second output port in sequence. The elastic bag body is arranged at the output end of the air pump body, the buffer cavity is formed between the air pump body and the air pipeline, direct connection between the air pump body and the air pipeline is avoided, noise and vibration propagation is reduced, meanwhile, the elastic bag body can generate elastic deformation when stressed, vibration energy generated by the air pump body is consumed and converted into elastic potential energy, and the air pump body is protected from being damaged. And vibration conduction is isolated.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of air pumps, in particular to an air pump module with a capsule type damping structure. BACKGROUND

[0002] With the development of science and technology, more and more comfort functions are provided for automobile seats, and functions such as seat waist support, massage and side wing support are relatively common comfort functions of seats. Regardless of the implementation of any function, the air bag needs to be inflated and deflated by an air pump. Since the existing air pump has a relatively serious vibration transmission, the conduction of noise and vibration is relatively serious, which seriously affects the driving experience of consumers, gradually cannot meet the requirements of consumers on the comfort of automobiles, and thus the performance of the air pump needs to be improved, the air path structure of the air pump needs to be optimized, and the conduction of noise and vibration needs to be maximally isolated, which is a problem to be solved at present. CONTENT OF THE UTILITY MODEL

[0003] The application aims to solve the above problems, and provides an air pump module with a capsule type damping structure, which comprises:

[0004] An air pump shell;

[0005] An air pump body provided in the air pump shell and having a first output port at one end thereof;

[0006] An elastic capsule provided at one end of the air pump body close to the first output port, wherein an internal buffer cavity is formed in the elastic capsule, the buffer cavity is in communication with the first output port, a gas nozzle is arranged on the side of the buffer cavity away from the first output port, and the gas nozzle is in communication with a second output port arranged on the air pump shell; the elastic capsule can be stretched / contracted along the axis direction of the air pump body, so that the volume of the buffer cavity is increased / decreased.

[0007] The air pump body is used for pressurizing gas and sequentially pumping out the pressurized gas through the first output port, the elastic capsule, the gas nozzle and the second output port.

[0008] According to the technical scheme provided by some embodiments of the application, at least one buffer structure is arranged on the elastic capsule, and the buffer structure can be unfolded / folded along the axis direction of the air pump body, so that the volume of the buffer cavity is increased / decreased.

[0009] According to the technical scheme provided by some embodiments of the application, the air pump body comprises a cover body, and the elastic capsule is integrally formed with the cover body.

[0010] According to the technical scheme provided by some embodiments of the application, the edge of the elastic capsule close to the side of the cover body is integrally injection molded with the inner wall surface of the cover body.

[0011] According to the technical scheme provided by some embodiments of the present application, the air pump body comprises a cover body, the first output port is arranged on the cover body, the elastic bag body is provided with an interface mechanism at one end close to the cover body, and the interface mechanism is connected with the cover body to make the first output port communicate with the buffer cavity.

[0012] According to the technical scheme provided by some embodiments of the present application, the first output port is provided with a first protruding part on the inner wall, the elastic bag body is mutually attached with the cover body at one side close to the cover body, and the middle part is provided with the interface mechanism, which is a clamping part extending to one side of the air pump body, the clamping part can penetrate the first output port and be clamped with the first protruding part, so as to fix the elastic bag body and the cover body.

[0013] According to the technical scheme provided by some embodiments of the present application, the first output port is provided with a second protruding part on the inner wall, the interface mechanism is a clamping groove arranged around the outer periphery of one end of the elastic bag body close to the cover body, and the second protruding part can be clamped in the clamping groove, so as to fix the elastic bag body and the cover body.

[0014] According to the technical scheme provided by some embodiments of the present application, the elastic bag body is made of silica gel or rubber material.

[0015] According to the technical scheme provided by some embodiments of the present application, the air nozzle and the elastic bag body are made of the same material and are integrally formed.

[0016] According to the technical scheme provided by some embodiments of the present application, the material of the air nozzle is different from that of the elastic bag body, and the air nozzle and the elastic bag body are integrally injection molded.

[0017] Compared with the prior art, the application has the beneficial effects that the air pump module with the capsule damping structure is provided, which comprises an air pump shell, an air pump body is arranged in the air pump shell, and a first output port is arranged at one end of the air pump body; an elastic capsule is arranged at one end of the air pump body close to the first output port, a buffer cavity is formed in the elastic capsule, the buffer cavity is communicated with the first output port, a gas nozzle is arranged on one side of the buffer cavity away from the first output port, and the gas nozzle is communicated with a second output port arranged on the air pump body; the elastic capsule can be stretched / contracted along the axis direction of the air pump body, so that the volume of the buffer cavity is increased / decreased, and the air pump body is used for pressurizing the gas and sequentially pumping out the pressurized gas through the first output port, the elastic capsule, the gas nozzle and the second output port; based on the above design, compared with the prior art, the air pump body in the application can inhale air from the external environment, pressurize the air and then output the pressurized air into the buffer cavity through the first output port; by arranging the elastic capsule at the output end of the air pump body, the buffer cavity is arranged between the air pump body and the gas pipeline, direct connection between the air pump body and the gas pipeline is avoided, the propagation of noise and vibration is reduced, and the elastic capsule can produce elastic deformation when subjected to stress, consumes the vibration energy generated by the air pump body during work, converts the vibration into elastic potential energy, most of the vibration generated by the air pump body during work is absorbed by the elastic capsule, and the vibration generated by the air pump body is prevented from being transmitted to the air pump shell, so that the conduction of the vibration is insulated.

[0018] It should be understood that the description of technical features, technical solutions, beneficial effects or similar language in the present application does not imply that all features and advantages can be achieved in any single embodiment. On the contrary, it can be understood that the description of a feature or a beneficial effect means that the specific technical feature, technical solution or beneficial effect is included in at least one embodiment. Therefore, the description of technical features, technical solutions or beneficial effects in the specification does not necessarily refer to the same embodiment. Further, the technical features, technical solutions and beneficial effects described in the embodiments can be combined in any appropriate manner. Those skilled in the art will understand that the embodiments can be implemented without one or more specific technical features, technical solutions or beneficial effects of a specific embodiment. In other embodiments, additional technical features and beneficial effects can be identified in specific embodiments that do not embody all embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings from these drawings without creating any creative labor.

[0020] Figure 1A cross-sectional view of the elastic capsule of the air pump module with the capsule type damping structure provided by the embodiment of the present application has a clamping groove and the air nozzle adopts soft material;

[0021] Figure 2 A cross-sectional view of the elastic capsule of the air pump module with the capsule type damping structure provided by the embodiment of the present application has a clamping groove and the air nozzle adopts soft material;

[0022] Figure 3 A cross-sectional view of the elastic capsule of the air pump module with the capsule type damping structure provided by the embodiment of the present application has a clamping groove and the air nozzle adopts soft material;

[0023] Figure 4 A cross-sectional view of the elastic capsule of the air pump module with the capsule type damping structure provided by the embodiment of the present application has a clamping groove and the air nozzle adopts soft material;

[0024] Figure 5 A cross-sectional view of the elastic capsule of the air pump module with the capsule type damping structure provided by the embodiment of the present application has a clamping groove and the air nozzle adopts soft material;

[0025] Figure 6 A cross-sectional view of the elastic capsule of the air pump module with the capsule type damping structure provided by the embodiment of the present application has a clamping groove and the air nozzle adopts soft material;

[0026] Figure 7 A cross-sectional view of the elastic capsule of the air pump module with the capsule type damping structure provided by the embodiment of the present application has a clamping groove and the air nozzle adopts soft material.

[0027] The text annotations in the figure represent:

[0028] 1, air pump body; 2, elastic capsule; 3, air nozzle; 4, air pump shell; 5, damping ring; 6, adapter; 7, external air pipe; 11, cover; 21, buffer cavity; 22, buffer structure; 23, connecting port; 24, clamping part; 25, clamping groove; 41, first shell; 42, second shell; 101, first output port; 102, first protruding part; 103, second protruding part. DETAILED DESCRIPTION

[0029] In order for those skilled in the art to better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present application. Specifically, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.

[0030] It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0031] As mentioned in the background section, in order to solve the problems existing in the prior art, this embodiment provides an air pump module with a bladder-type vibration damping structure, including:

[0032] Air pump housing 4;

[0033] The air pump body 1 is disposed inside the air pump housing 4, and a first output port 101 is provided at one end.

[0034] An elastic bladder 2 is located at one end of the air pump body 1 near the first output port 101. A buffer cavity 21 is formed inside the elastic bladder 2, which is connected to the first output port 101. An air nozzle 3 is provided on the side of the buffer cavity 21 away from the first output port 101, and the air nozzle 3 is connected to a second output port provided on the air pump housing. The elastic bladder 2 can be stretched / contracted along the axial direction of the air pump body 1 to increase / decrease the volume of the buffer cavity 21.

[0035] The air pump body 1 is used to pressurize the gas and pump the pressurized gas out sequentially through the first output port 101, the elastic bladder 2, the air nozzle 3 and the second output port.

[0036] like Figures 1-5As shown, the air pump shell 4 comprises a first shell 41 and a second shell 42 which can be buckled to each other, the air pump shell 4 is provided with a second output port at one end, the air pump shell 4 is sleeved on the outer periphery of the air pump body 1, which is convenient for installation and can protect the air pump body 1 from being damaged, the air pump body 1 comprises a motor, the motor is drivingly connected with a plurality of pistons, the pistons are repeatedly contracted and expanded by the motor to suck the external gas into the pistons for pressurization, the plurality of pistons are sequentially moved to make the pressurized gas sequentially pumped out through the first output port 101, the elastic bag body 2, the air nozzle 3 and the second output port; the air pump body 1 and the air pump shell 4 are further provided with a damping ring 5, the damping ring 5 can reduce the vibration conduction between the air pump body 1 and the air pump shell 4; the elastic bag body 2 is approximately in a hemispherical structure, is fixed at one end of the air pump body 1 close to the first output port 101, and can be elastically deformed when subjected to stress, stretched / contracted along the axis direction of the air pump body 1, the side of the elastic bag body 2 away from the first output port 101 is provided with the air nozzle 3, an internal space of the elastic bag body 2 forms a buffer cavity 21, the buffer cavity 21 is communicated with the first output port 101 and the air nozzle 3, and the gas output by the air pump body 1 through the first output port 101 enters the buffer cavity 21 and then is output through the air nozzle 3 and the second output port.

[0037] Further, the air pump shell 41 is further provided with an adapter 6 at the second output port, the adapter 6 is used for connecting the air nozzle 3 with an external air pipe 7, both ends of the adapter 6 are respectively arranged in the air nozzle 3 and the external air pipe 7, and the adapter 6 is fixed with the air nozzle 3 and the external air pipe 7 in a manner of interference fit, or can be fixed in other manners, a clamping structure can also be arranged on the outer wall of the end of the air nozzle 3 away from the elastic bag body 2 to clamp the air pump shell 4, which is not specially limited herein; the adapter 6 is arranged on the air pump shell 4, can be integrally formed with the air pump shell 4, or can be separately formed and then fixed with the air pump shell 4 in a manner of clamping, bonding or the like; the free end of the external air pipe 7 is communicated with an air bag on a seat, and is used for guiding the gas output by the air pump body 1 to the air bag.

[0038] The elastic bag body 2 is arranged at the output end of the air pump body 1, so that the air pump body 1 and the gas pipeline have the buffer cavity 21, direct connection between the air pump body 1 and the gas pipeline is avoided, and the transmission of noise and vibration is reduced, meanwhile, the elastic bag body 2 can be elastically deformed when subjected to stress, consumes the vibration energy generated by the air pump body 1 during work, converts the vibration into elastic potential energy, most of the vibration generated by the air pump body during work is absorbed by the elastic bag body 2, and the vibration generated by the air pump body is prevented from being transmitted to the air pump shell, so that the conduction of vibration is isolated.

[0039] In a preferred embodiment, the elastic bag body 2 has at least one buffer structure 22, the buffer structure 22 can be unfolded / folded along the axis direction of the air pump body 1, so as to increase / decrease the volume of the buffer cavity 21.

[0040] As shown in FIG. 1, the air pump body 1 is provided with a first output port 101, the first output port 101 is arranged on the air pump body 1, and the first output port 101 is communicated with the buffer cavity 21 of the elastic bag body 2. Figures 1-4As shown, the buffer structure 22 is a wave-shaped fold, which is unfolded along the axis of the air pump body 1 when the elastic bag 2 is stretched, and is folded along the axis of the air pump body 1 when the elastic bag 2 is compressed; by providing the buffer structure 22 on the elastic bag 2, the stretchability of the elastic bag 2 is increased, so that it has a large elastic deformation, and can absorb a large amount of vibration generated by the air pump body 1, so as to convert it into elastic potential energy and isolate the conduction of vibration.

[0041] In a preferred embodiment, the air pump body 1 comprises a cover body 11, and the elastic bag 2 is integrally formed with the cover body 11.

[0042] As shown in Figure 1 and Figure 3 , the cover body 11 and the elastic bag 2 can be integrally injection molded in a two-shot injection molding manner, so that the cover body 11 and the elastic bag 2 form an integrated structure, and the cover body 11 and the elastic bag 2 are more stable in use, preventing the elastic bag 2 from falling off due to excessive air pressure.

[0043] In a preferred embodiment, the edge of the elastic bag 2 close to the cover body 11 is integrally injection molded with the inner wall surface of the cover body 11.

[0044] As shown in Figure 1 and Figure 3 , the edge of the elastic bag 2 close to the cover body 11 extends into the cover body 11 and is fixed on the inner wall surface of the cover body 11 by injection molding.

[0045] In a preferred embodiment, the air pump body 1 comprises a cover body 11, and a first output port 101 is formed on the cover body 11, and one end of the elastic bag 2 close to the cover body 11 has an interface mechanism, which is connected with the cover body 11 to make the first output port 101 and the buffer cavity 21 communicate.

[0046] As shown in Figures 1-4 , the air pump body 1 further comprises a gas distribution structure, and a gas outlet path is formed between the cover body 11 and the gas distribution structure, a plurality of pistons are respectively connected with the gas outlet path in one direction through the gas distribution structure, the gas outlet path is connected with the first output port 101 at the end, and a connecting port 23 is formed on the side of the elastic bag 2 close to the cover body 11, and the interface mechanism is formed at the connecting port 23, so that the elastic bag 2 can be fixed with the cover body 11 through the interface mechanism, and the connecting port 23 is connected with the first output port 101.

[0047] In a preferred embodiment, the first output port 101 has a first protruding portion 102 on the inner wall, and the side of the elastic bag 2 close to the cover body 11 is attached to the cover body 11, and has an interface mechanism in the middle, which is a clamping portion 24 extending to the side of the air pump body 1, and the clamping portion 24 can penetrate the first output port 101 and be clamped with the first protruding portion 102, so as to fix the elastic bag 2 with the cover body 11.

[0048] As shown in Figure 2 , Figure 4 and Figure 7 , the first output port 101 is formed in the center of the cover 11, and the edge of the first output port 101 extends to the center to form the first protruding part 102; the elastic bag 2 is approximately flat on the side close to the cover 11, and the profile of the outer surface of the cover 11 matches, and the connecting port 23 is formed in the position corresponding to the first output port 101, the edge of the connecting port 23 extends to the side of the air pump body 1 and the end forms the clamping part 24 with a wedge structure, the clamping part 24 can be clamped on the side away from the elastic bag 2 after penetrating the first output port 101, so that the elastic bag 2 is fixed with the cover 11, and the first output port 101 is communicated with the buffer cavity 21 through the connecting port 23; by setting the clamping part 24 which can be clamped with the first protruding part 102, the existing cover 11 structure of the air pump does not need to be changed, and the elastic bag 2 is directly fixed with the cover 11.

[0049] In a preferred embodiment, the first output port 101 has a second protruding part 103 on the inner wall, and the interface mechanism is the clamping groove 25 formed around the outer periphery of the elastic bag 2 close to the cover 11, and the second protruding part 103 can be clamped in the clamping groove 25, so that the elastic bag 2 is fixed with the cover 11.

[0050] As shown in Figure 1 , Figure 3 and Figure 6 , the side of the cover 11 close to the elastic bag 2 is an open structure, and the open structure is the first output port 101, and the edge of the first output port 101 extends to the center of the cover 11 to form the second protruding part 103; the elastic bag 2 has the connecting port 23 on the side close to the cover 11, and the clamping groove 25 is formed around the outer periphery of the connecting port 23 on the elastic bag 2, and the inner profile of the clamping groove 25 matches the outer profile of the second protruding part 103, and the second protruding part 103 can be clamped in the clamping groove 25, so that the elastic bag 2 is fixed with the cover 11, and the inside of the cover 11 is communicated with the buffer cavity 21; by forming the first output port 101 with a larger area on the cover 11, the elastic bag 2 covers the first output port 101, the buffer cavity 21 and the inside space of the cover 11 are combined to form a larger space, and the transmission of noise and vibration is further isolated.

[0051] In a preferred embodiment, the elastic bag 2 is made of silica gel or rubber.

[0052] As shown in Figure 5 , silica gel or rubber has good elasticity and can withstand repeated stretching and compression, and the elastic bag 2 made of silica gel or rubber can withstand large elastic deformation and restore to its original state, effectively reducing the conduction of noise and vibration.

[0053] In a preferred embodiment, the air nozzle 3 is made of the same material as the elastic bag body 2 and is integrally formed.

[0054] In a preferred embodiment, the air nozzle 3 is made of a different material from the elastic bag body 2 and is integrally formed with the elastic bag body 2 by injection molding.

[0055] As shown in Figs. 1 and 2, the air nozzle 3 can be made of the same material as the elastic bag body 2, such as silicone or rubber, and is integrally formed with the elastic bag body 2, so as to further improve the damping effect. Figure 1 Figure 4 As shown in Figs. 1 and 2, the air nozzle 3 can be made of the same material as the elastic bag body 2, such as silicone or rubber, and is integrally formed with the elastic bag body 2, so as to further improve the damping effect. Figure 3 Figure 4 As shown in Figs. 1 and 2, the air nozzle 3 can be made of the same material as the elastic bag body 2, such as silicone or rubber, and is integrally formed with the elastic bag body 2, so as to further improve the damping effect. Figure 1 Figure 2 The air nozzle 3 is made of a material different from the elastic bag body 2, such as polyester TPU or polyether TPU, which is harder than the material of the elastic bag body 2, so as to improve the stability of the connection between the air nozzle 3 and the air pump shell 4. The specific material can be designed according to the actual situation, and is not specially limited herein. The air nozzle 3 made of a material different from the elastic bag body 2 can be integrally formed with the elastic bag body 2 by secondary injection molding. The air nozzle 3 communicates with the buffer cavity, and the air nozzle 3 facilitates the dismounting and connecting between the elastic bag body 2 and the gas pipeline, so as to improve the applicability of the elastic bag body 2.

[0056] Working principle: In use, the air pump body 1 inhales air from the external environment and pressurizes the air, which is then output to the buffer cavity 21 through the first output port 101. The gas enters the buffer cavity 21 and is then output through the air nozzle 3 and the second output port. When the gas enters the buffer cavity 21, the pressure in the buffer cavity 21 increases, the elastic bag body 2 is stretched, and the buffer structure 22 is unfolded. When the pressure in the buffer cavity 21 stabilizes, the elastic bag body 2 stops deforming. When the vibration of the air pump body 1 is transmitted to the elastic bag body 2, the elastic bag body 2 is stressed, the buffer structure 22 is repeatedly folded and unfolded, the vibration energy is converted into elastic potential energy, and the transmission of vibration is isolated.

[0057] The principles and implementation modes of the present application are described by using specific examples in this paper, and the above examples are only used to help understand the method and its core idea. The above description is only a preferred embodiment of the present application. It should be pointed out that due to the limitation of language expression, there are infinite specific structures, and for ordinary skilled persons in the technical field, some improvements, refinements or changes can be made without departing from the principles of the present application. The technical features can be combined in an appropriate manner, or the improved, refined, changed or combined technical features or the improved, refined, changed or combined technical features can be directly applied to other occasions, which should be regarded as the protection scope of the present application.

Claims

1. A gas pump module having a bladder type damping structure, characterized by, The utility model provides a kind of air pump, including: Air pump shell (4); Air pump body (1), the air pump body (1) is located in the air pump shell (4), and one end is provided with first output port (101); Elastic bag body (2), the elastic bag body (2) is located in the air pump body (1) one end close to the first output port (101), and its inside forms buffer cavity (21), the buffer cavity (21) is communicated with the first output port (101), and the buffer cavity (21) is provided with air nozzle (3) on the side away from the first output port (101), and the air nozzle (3) is communicated with the second output port arranged on the air pump shell (4);The elastic bag body (2) can be stretched / contracted along the air pump body (1) axial direction, so that the volume of the buffer cavity (21) increases / contracts; The air pump body (1) is used for pressurizing gas and sequentially pumping the pressurized gas through the first output port (101), the elastic bag body (2), the air nozzle (3) and the second output port.

2. The air pump module with the bladder type damping structure according to claim 1, characterized in that, The elastic bag body (2) has at least one buffer structure (22) thereon, which can be unfolded / folded along the air pump body (1) axial direction to increase / decrease the volume of the buffer cavity (21).

3. The air pump module with the bladder type damping structure according to claim 1 or 2, characterized in that, The air pump body (1) includes a cover (11), and the elastic bag body (2) is integrally formed with the cover (11).

4. The air pump module with the bladder type damping structure according to claim 3, characterized in that, The edge of the elastic bag body (2) close to the side of the cover (11) is integrally injection molded with the inner wall of the cover (11).

5. The air pump module with the bladder type damping structure according to claim 1 or 2, characterized in that, The air pump body (1) includes a cover (11), and the cover (11) is provided with the first output port (101). The elastic bag body (2) has an interface mechanism at one end close to the cover (11), and the interface mechanism is connected with the cover (11) to make the first output port (101) communicated with the buffer cavity (21).

6. The air pump module with the bladder type damping structure according to claim 5, characterized in that, The first output port (101) has a first protrusion (102) on the inner wall thereof. The elastic bag body (2) is attached to the cover (11) on one side thereof, and has the interface mechanism in the middle thereof. The interface mechanism is a clamping portion (24) extending to one side of the air pump body (1). The clamping portion (24) can penetrate the first output port (101) and be clamped with the first protrusion (102) to fix the elastic bag body (2) with the cover (11).

7. The air pump module with the bladder type damping structure according to claim 5, characterized in that, The first output port (101) has a second protrusion (103) on the inner wall thereof. The interface mechanism is a clamping groove (25) formed around the outer periphery of one end of the elastic bag body (2) close to the cover (11). The second protrusion (103) can be clamped in the clamping groove (25) to fix the elastic bag body (2) with the cover (11).

8. The air pump module with the bladder type damping structure according to claim 1 or 2, characterized in that, The elastic bag body (2) is made of silica gel or rubber.

9. The air pump module with the bladder type damping structure according to claim 1 or 2, characterized in that, The air nozzle (3) is made of the same material as the elastic bag body (2) and is integrally formed with the elastic bag body (2).

10. The air pump module with the bladder type damping structure according to claim 1 or 2, characterized in that, The air nozzle (3) is made of a material different from that of the elastic bag body (2), and the air nozzle (3) is integrally injection molded with the elastic bag body (2).

Images