Radial compression air pump for car seat

Abstract

The application provides a radial compression type air pump for an automobile seat, comprising: a shell defining an installation space inside, an elastic cylinder body and a driving member being arranged in the installation space, an output shaft of the driving member being connected with an eccentric assembly, the eccentric assembly comprising a plurality of connecting members arranged in a circumferential direction, and the connecting members being connected with the elastic cylinder body one by one; the application is based on the fact that the more the number of elastic cylinder bodies is, the volume and stroke length of a single cylinder body are significantly reduced while ensuring the gas compression efficiency, so that the bending degree of the elastic cylinder body is greatly reduced, and the operation life is improved; at the same time, the shorter the cylinder stroke is, the smaller the eccentric distance is, and then the vibration and noise during operation are reduced, and the quiet comfort of the seat system is improved; the modular structure distributed in the circumferential direction not only realizes the extreme compression of the axial thickness of the air pump, meets the demand of the automobile seat for an ultra-thin volume, but also adapts to scenes with different flow and performance requirements by flexibly increasing or decreasing the number of cylinder bodies or adjusting the distribution density, and has high integration and expansibility.

Description

Technical Field

[0001] This application generally relates to the field of air pump technology, and specifically to a radial compression air pump for automotive seats. Background Technology

[0002] With the development of the automotive industry, the comfort and intelligence of car seats are constantly improving. As a core component of the car seat adjustment system (such as seat ventilation, massage, height adjustment, etc.), the performance, size, noise and vibration characteristics of the air pump directly affect the user experience of the seat and the space of the whole vehicle.

[0003] In existing technologies, automotive seat air pumps use a motor-torsion shaft-swing disc transmission structure to drive four axially mounted elastic cylinders to reciprocate up and down, thereby achieving the functions of gas compression and delivery. However, with the industry's increasing demand for thinner, higher-performance, and lower-noise and vibration air pumps, this structure cannot effectively balance the relationship between air pump volume, the number of cylinders, and the cylinder area. If the number of cylinders is increased or the cylinder area is enlarged to improve performance, the axial dimension of the air pump will inevitably increase, failing to meet the "thin volume" design. If the axial volume is compressed, the number of cylinders must be reduced or the area must be reduced, directly sacrificing air pump performance and making it difficult to meet the high-efficiency working requirements of high-end seats. At the same time, the axially reciprocating cylinders are prone to high vibration and high noise during operation, and their dynamic characteristics make vibration suppression difficult, seriously affecting the quietness and comfort of the seat. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a radial compression air pump for automobile seats that can solve the above-mentioned technical problems.

[0005] This application provides a radial compression air pump for automotive seats, comprising: A housing that defines an installation space and has at least one air inlet and at least one air outlet. An actuator is disposed within the installation space, the actuator comprising a plurality of circumferentially arranged elastic cylinders; wherein the air passage from the air inlet to the elastic cylinder is configured to be unidirectional, and the air passage from the elastic cylinder to the air outlet is also configured to be unidirectional. A driving component is disposed within the installation space, and the driving component is at least partially surrounded by the actuating component; the driving component has at least one output shaft, the output shaft being drivenly connected to an eccentric assembly, the eccentric assembly having a plurality of circumferentially arranged connecting members, each of the connecting members being respectively connected to a corresponding elastic cylinder; the driving component is used to drive the eccentric assembly to move, so as to convert the rotational motion of the driving component into linear reciprocating motion, so that each of the connecting members respectively drives the corresponding elastic cylinder to reciprocate along the radial direction of the actuating component.

[0006] According to the technical solution provided in this application, an intake check valve is provided on the air path from the air inlet to the elastic cylinder, and an outlet check valve is provided on the air path from the elastic cylinder to the air outlet.

[0007] According to the technical solution provided in this application, a fixing frame is provided in the installation space. The fixing frame is a ring structure, and the actuator is fixedly installed on the inner wall of the fixing frame.

[0008] According to the technical solution provided in this application, it further includes: a retainer, the retainer including: a connecting part and a limiting part, the connecting part being perpendicularly arranged to the limiting part, the limiting part including a plurality of limiting spaces, the limiting part being inserted between the actuators, and the limiting space containing the elastic cylinder, the connecting part being fixedly connected to the fixing frame, and the retainer being used to apply a radial clamping force to the elastic cylinder.

[0009] According to the technical solution provided in this application, the elastic cylinder includes: an extension and a compression part, the extension and the compression part are connected, the compression part has a compression space inside, the connecting parts are inserted into the extension one by one, and the connecting parts have air inlet grooves; a first elastic swing plate is provided at the connection between the extension and the compression part, and the air inlet one-way valve is composed of the first elastic swing plate, the air inlet groove and the inner wall of the extension.

[0010] According to the technical solution provided in this application, the elastic cylinder includes an extension and a compression section. The extension is connected to the compression section. The compression section has a compression space inside. The connecting pieces are inserted into the extension one by one. A sealing strip is connected to the end of the compression section away from the extension. A second elastic swing plate is provided on the sealing strip. A first through hole is provided on the fixing frame corresponding to the elastic cylinder. The one-way valve for air outlet is composed of the second elastic swing plate, the first through hole, and the side of the fixing frame near the second elastic swing plate.

[0011] According to the technical solution provided in this application, the eccentric component further includes: An actuator, wherein a plurality of connecting members are arranged circumferentially; An eccentric wheel is connected to the output shaft of the drive component; A bearing is disposed between the eccentric wheel and the actuator.

[0012] According to the technical solution provided in this application, the driving member has two output shafts, which extend to both sides of the driving member and are coaxially arranged. The two output shafts are respectively connected to the corresponding eccentric components, and the two eccentric components are respectively connected to the corresponding actuators.

[0013] According to the technical solution provided in this application, the end of the compression section away from the extension section is disposed toward the output end of the drive member.

[0014] According to the technical solution provided in this application, the housing includes: an outer shell and a base, the middle part of the outer shell and the base forms the installation space, and a sealing ring is provided between the outer shell and the base; the outer shell is provided with a plurality of air inlets in a circumferential direction, and an air outlet is provided on the side wall of the outer shell, the air outlet being disposed through the air outlet.

[0015] The beneficial effects of this application are as follows: This application provides a radial compression air pump for automotive seats, comprising: a housing defining an internal installation space, wherein the housing has at least one air inlet and at least one air outlet; an actuator is provided within the installation space, the actuator comprising a plurality of circumferentially arranged elastic cylinders, the air passage from the air inlet to the elastic cylinders being configured for unidirectional flow, and the air passage from the elastic cylinders to the air outlet being also configured for unidirectional flow; a drive member is further provided within the installation space, the drive member being at least partially surrounded by the actuator; the output shaft of the drive member is connected to an eccentric assembly, the eccentric assembly having a plurality of circumferentially arranged connectors, each connector being connected to a corresponding elastic cylinder; this application provides a radial compression air pump for automotive seats, comprising a radial compression air pump for automotive seats, wherein the radial compression air pump comprises a radially arranged ... The eccentric component driven by the component works in conjunction with multiple circumferentially arranged elastic cylinders to achieve gas compression and delivery. Furthermore, the greater the number of elastic cylinders, the more efficient the gas compression is, the more the volume and stroke length of each individual cylinder are reduced, significantly decreasing the bending of the cylinders and improving their lifespan. Simultaneously, shorter cylinder strokes reduce the eccentric distance, thus decreasing vibration and noise during operation and improving the quietness and comfort of the seat system. In addition, the circumferentially distributed modular structure not only achieves extreme compression of the air pump's axial thickness to meet the ultra-thin volume requirements of automotive seats, but also allows for flexible adjustment of the number of cylinders or distribution density to adapt to different flow rate and performance requirements, combining high integration and scalability. Attached Figure Description

[0016] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is an exploded view of the first radial compression air pump for automobile seats provided in this application; Figure 2 This is a schematic diagram of the elastic cylinder provided in this application; Figure 3 This is a schematic diagram showing the sealing strip and the fixing bracket separated as provided in this application; Figure 4This is a schematic diagram of the connection between the sealing strip and the fixing frame provided in this application; Figure 5 This is a schematic diagram of the actuator and the elastic cylinder provided in this application; Figure 6 This is a schematic diagram of the first radial compression air pump for automobile seats provided in this application; Figure 7 This is a cross-sectional view of the internal portion of the first radial compression air pump for automobile seats provided in this application; Figure 8 This is an exploded view of the drive component of the first radial compression air pump for automotive seats provided in this application, which has two output shafts; Figure 9 yes Figure 8 A sectional view; Figure 10 This is an exploded view of the second type of radial compression air pump for automobile seats provided in this application; Figure 11 yes Figure 10 A sectional view; Figure 12 This is an exploded view of the drive component of the second type of radial compression air pump for automobile seats provided in this application, which has two output shafts; Figure 13 yes Figure 12 A sectional view; Figure 14 This is an exploded view of the third type of radial compression air pump for automobile seats provided in this application; Figure 15 yes Figure 14 A sectional view; Figure 16 This is an exploded view of the drive component of the third type of radial compression air pump for automotive seats provided in this application, which has two output shafts. Figure 17 yes Figure 16 A sectional view.

[0017] In the diagram: 1. Housing; 11. Outer shell; 12. Base; 13. Sealing ring; 2. Elastic cylinder; 21. Compression section; 22. Extension section; 23. Inlet check valve; 24. Outlet check valve; 3. Sealing strip; 4. Actuator; 41. Base plate; 42. Side plate; 5. Connector; 51. Inlet slot; 6. Drive component; 61. Output shaft; 7. Fixing frame; 71. First through hole; 8. Retainer; 81. Connecting section; 82. Limiting section; 9. Eccentric wheel; 10. Bearing; 14. Inlet; 15. Outlet; 16. Actuator; 17. First elastic swing plate; 18. Second elastic swing plate. Detailed Implementation

[0018] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] Example 1 Please refer to Figures 1-17 This application provides a radial compression air pump for automotive seats, comprising: The housing 1 defines an installation space and is provided with at least one air inlet 14 and at least one air outlet 15. Actuator 16 is disposed in the installation space. Actuator 16 includes a plurality of elastic cylinders 2 arranged circumferentially. The air passage from the air inlet 14 to the elastic cylinder 2 is configured to be unidirectional, and the air passage from the elastic cylinder 2 to the air outlet 15 is also configured to be unidirectional. The drive member 6 is located within the installation space and is at least partially surrounded by the actuator 16. The drive member 6 has at least one output shaft 61, which is connected to an eccentric assembly. The eccentric assembly has multiple connecting members 5 arranged circumferentially, and each connecting member 5 is connected to a corresponding elastic cylinder 2. The drive member 6 is used to drive the eccentric assembly to convert the rotational motion of the drive member 6 into linear reciprocating motion, so that each connecting member 5 drives the corresponding elastic cylinder 2 to reciprocate along the radial direction of the actuator 16.

[0021] Specifically, the drive component 6 is a centrally mounted motor, which in some embodiments has a circular structure. In this embodiment, the drive component 6, the eccentric assembly, and the elastic cylinder 2 form a complete power transmission chain. The output shaft 61 of the centrally mounted motor drives the eccentric assembly to rotate, and the eccentric assembly converts the rotational motion into linear reciprocating motion, so that the connecting member 5 drives the elastic cylinder 2 to reciprocate along the radial direction of the actuator 16. Each elastic cylinder 2 completes the compression and reset actions in the circumferential direction in sequence to achieve continuous and stable gas output. In some embodiments, such as Figures 10-13As shown, the drive unit 6 is the first motor. The first motor adopts a square structure design, and the housing 1 adopts a matching square structure, which fits seamlessly with the geometric contour of the square motor to form a compact modular package. The collaborative design of the square housing 1 and the square motor eliminates the redundant gaps of the traditional circular structure, compressing the overall thickness of the air pump to the extreme. At the same time, it is equipped with a miniaturized elastic cylinder 2 and a compact cage 8 assembly to achieve a high-density layout of functional units and adapt to the complex installation constraints of narrow spaces. Specifically, the number of elastic cylinders 2 is preferably a prime number to avoid the superposition of vibration waves generated by each elastic cylinder 2 during movement, thus preventing the generation of resonant waves, such as... Figure 1 As shown, in this embodiment, there are sixteen elastic cylinders 2; the more cylinders there are, the smaller the volume of each cylinder and the shorter the stroke of the cylinder. Specifically, in some embodiments, such as Figure 1 As shown, the central portion of the actuator 16 has a placement space, and the drive member 6 is disposed within the placement space of the actuator 16, that is, the drive member 6 is completely surrounded by the actuator 16; in some embodiments, such as Figure 10 As shown, the output shaft 61 of the drive member 6 extends into the center of the actuator 16, meaning that part of the drive member 6 is surrounded by the actuator 16.

[0022] Working principle: This application uses a drive component 6 to drive an eccentric assembly and multiple circumferentially arranged elastic cylinders 2 to work together, thereby realizing the functions of gas compression and delivery. Furthermore, the greater the number of elastic cylinders 2, the more efficient the gas compression is, the more the volume and stroke length of each individual cylinder are reduced, thus significantly reducing the bending degree of the elastic cylinders 2 and improving their service life. Simultaneously, a shorter cylinder stroke reduces the eccentric distance, thereby reducing vibration and noise during operation and improving the quietness and comfort of the seat system. In addition, the circumferentially distributed modular structure not only achieves extreme compression of the air pump's axial thickness to meet the ultra-thin volume requirements of automotive seats, but also allows for flexible adjustment of the number of cylinders or distribution density to adapt to different flow rate and performance requirements, combining high integration and scalability.

[0023] In some embodiments, the housing 1 includes: an outer shell 11 and a base 12, with the middle of the outer shell 11 and the base 12 forming an installation space, and a sealing ring 13 provided between the outer shell 11 and the base 12; the outer shell 11 is provided with a plurality of air inlets 14 in the circumferential direction, and an air outlet is provided on the side wall of the outer shell 11, with an air outlet 15 passing through the air outlet.

[0024] Specifically, in this embodiment, such as Figure 6 and Figure 7As shown, the housing 1 includes an outer shell 11 and a base 12. The middle of the outer shell 11 and the base 12 forms an installation space. An air collecting cavity is formed between the outer shell 11, the base 12 and the fixing frame 7. The air collecting cavity is unidirectionally connected to the compression space of each elastic cylinder 2 and is also connected to the air outlet 15. Multiple air inlets 14 are circumferentially arranged in the middle of the outer shell 11. The air inlets 14 are correspondingly arranged with the elastic cylinder 2. An air outlet is provided on the side wall of the outer shell 11. The air outlet 15 is arranged through the air outlet. When the air pump of this application is working, when the central motor drives the eccentric component to stretch the elastic cylinder 2, air enters the compression space unidirectionally through the air inlet 14. When the central motor drives the eccentric component to squeeze the elastic cylinder 2, the gas is discharged from the compression space through the one-way valve 24 and collected in the air collecting cavity. It is then discharged from the air pump through the air outlet 15, thus completing one exhaust movement. Specifically, a sealing ring 13 is provided between the outer shell 11 and the base 12 to ensure the airtightness of the gas collection chamber; In some embodiments, an intake check valve 23 is provided in the air path from the intake port 14 to the elastic cylinder 2, and an exhaust check valve 24 is provided in the air path from the elastic cylinder 2 to the outlet port 15.

[0025] Specifically, an intake check valve 23 is provided on the air path from the intake port 14 to the elastic cylinder 2. When the elastic cylinder 2 is in the intake stroke, the intake check valve 23 is opened by air pressure, and the external gas flows smoothly into the elastic cylinder 2. An outlet check valve 24 is provided on the air path from the elastic cylinder 2 to the outlet 15. When the elastic cylinder 2 is compressed, the outlet check valve 24 is opened by air pressure, and the gas in the cylinder is output to the outside through the outlet 15.

[0026] In some embodiments, a mounting frame 7 is provided in the installation space. The mounting frame 7 has a ring structure, and the actuator 16 is fixedly installed on the inner wall of the mounting frame 7.

[0027] Specifically, a mounting bracket 7 is installed within the installation space, such as... Figures 3-4 As shown, in this embodiment, the fixing frame 7 is a ring structure. The fixing frame 7 is sleeved on the outside of the actuator 16, and the actuator 16 is fixedly connected to the inner wall of the fixing frame 7. The fixing frame 7 is used to provide radial support for the actuator 16 to ensure that the elastic cylinder 2 maintains high positioning accuracy and structural stability in the reciprocating motion along the radial direction of the actuator 16.

[0028] In some embodiments, it further includes a retainer 8, which includes a connecting portion 81 and a limiting portion 82. The connecting portion 81 and the limiting portion 82 are arranged perpendicularly. The limiting portion 82 includes a plurality of limiting spaces. The limiting portion 82 is inserted between the actuators 16, and the limiting space contains an elastic cylinder 2. The connecting portion 81 is fixedly connected to the fixing frame 7. The retainer 8 is used to apply a radial clamping force to the elastic cylinder 2.

[0029] Specifically, the radial compression air pump also includes a retainer 8, which includes a connecting part 81 and a limiting part 82, which are integrally formed. The connecting part 81 and the limiting part 82 are arranged vertically. In this embodiment, the limiting part 82 includes multiple circumferentially distributed U-shaped limiting spaces. When the actuator 16 is installed, the actuator 16 is first fixedly connected to the fixing frame 7. Then, the limiting part 82 of the retainer 8 is inserted between the actuators 16, and the limiting space contains an elastic cylinder 2. The connecting part 81 is fixedly connected to the fixing frame 7. The retainer 8 applies radial clamping force to the elastic cylinder 2 through the inner walls of the limiting space to suppress the lateral displacement of the elastic cylinder 2 when it reciprocates along the radial direction of the actuator 16. At the same time, the rigid support of the connecting part 81 improves the vibration resistance of the overall structure.

[0030] In some embodiments, the elastic cylinder 2 includes an extension 22 and a compression section 21, the extension 22 and the compression section 21 are connected, the compression section 21 has a compression space inside, the connectors 5 are inserted into the extension 22 one by one, and the connectors 5 have an air inlet groove 51; a first elastic swing plate 17 is provided at the connection between the extension 22 and the compression section 21, and the air inlet one-way valve 23 is composed of the first elastic swing plate 17, the air inlet groove 51 and the inner wall of the extension 22.

[0031] Specifically, such as Figure 2 As shown, the elastic cylinder 2 includes an integrally formed extension 22 and a compression section 21. The extension 22 is connected to the compression section 21. The extension 22 is a cylindrical hollow structure. Connectors 5 are inserted into the extension 22 one by one to transmit radial driving force. In this embodiment, the connectors 5 and the extension 22 are connected by an interference fit. The compression section 21 has a compression space inside. The connector 5 has an air inlet groove 51. A first elastic flap 17 is provided at the connection between the extension 22 and the compression section 21. The air inlet one-way valve 23 is composed of the first elastic flap 17, the air inlet groove 51, and the inner wall of the extension 22. When the elastic cylinder 2 draws in air, the gas enters the extension 22 through the air inlet groove 51. The first elastic flap 17 bends into the compression space under negative pressure, opening the air inlet channel. When the elastic cylinder 2 compresses, the first elastic flap 17 adheres to the inner wall of the extension 22 under positive pressure, blocking the gas backflow path.

[0032] In some embodiments, the elastic cylinder 2 includes an extension 22 and a compression section 21. The extension 22 communicates with the compression section 21. The compression section 21 has a compression space inside. Connecting members 5 are inserted into the extension 22 one by one. A sealing strip 3 is connected to the end of the compression section 21 away from the extension 22. A second elastic swing plate 18 is provided on the sealing strip 3. A first through hole 71 is provided on the fixing frame 7 corresponding to the elastic cylinder 2. The air outlet one-way valve 24 is composed of the second elastic swing plate 18, the first through hole 71 and the side of the fixing frame 7 near the second elastic swing plate 18.

[0033] Specifically, a sealing strip 3 is connected to the end of the compression section 21 away from the extension section 22. In this embodiment, the sealing strip 3 is made of rubber or silicone. When installing the actuator 16, the actuator 16 is first fixedly connected to the fixing frame 7. Then, the limiting part 82 of the retainer 8 is inserted between the actuators 16, and the limiting space contains the elastic cylinder 2. The connecting part 81 is fixedly connected to the fixing frame 7 to apply radial clamping force to the elastic cylinder 2. Finally, the sealing strip 3 is folded over so that the sealing strip 3 is connected to the snap-fit ​​on the fixing frame 7 to form a closed-loop seal. This modular assembly design reduces the assembly time of the traditional air pump through pre-positioning and step-by-step locking mechanisms, and does not require special tooling fixtures, significantly reducing production complexity and manufacturing costs. Specifically, such as Figure 2 As shown, the sealing strip 3 is provided with a second elastic flap 18, and the fixing frame 7 has a first through hole 71 corresponding to the elastic cylinder 2. The one-way valve 24 is composed of the second elastic flap 18, the first through hole 71, and the fixing frame 7 on the side close to the second elastic flap 18. When the elastic cylinder 2 is compressed, the second elastic flap 18 is elastically flipped away from the first through hole 71 under positive pressure, opening the air outlet channel, and the gas flows out from the first through hole 71 to the air outlet 15. When the elastic cylinder 2 draws in air, the second elastic flap 18 is tightly attached to the first through hole 71 under its own elasticity and negative pressure, preventing the gas from flowing back in.

[0034] In some implementations, the eccentric component further includes: Actuator 4, and multiple connecting parts 5 arranged circumferentially on actuator 4; Eccentric wheel 9 is connected to the output shaft 61 of drive component 6; Bearing 10 is disposed between eccentric wheel 9 and actuator 4.

[0035] Specifically, the eccentric assembly also includes an actuator 4, an eccentric wheel 9, and a bearing 10. The actuator 4 has multiple connecting parts 5 arranged circumferentially. The eccentric wheel 9 is connected to the output shaft 61 of the drive unit 6. Its outer edge is engaged with the central mounting hole of the actuator 4 through the bearing 10, which converts the rotational motion of the motor into the planar eccentric motion of the actuator 4. This design significantly reduces friction loss and radial vibration by optimizing the eccentricity and the fit accuracy of the bearing 10, while ensuring that the driving force is efficiently transmitted to the circumferentially arranged elastic cylinder 2, thereby improving the overall stability and reliability of the air pump's movement. Specifically, such as Figures 1-5As shown, in some embodiments, multiple elastic cylinders 2 are arranged circumferentially on the inner wall of the sealing strip 3. The elastic cylinders 2 are flexibly connected to the sealing strip 3 through an integral molding process, and their extensions 22 are hollow cylindrical structures. Multiple connectors 5 are arranged circumferentially on the outer wall of the actuator 4. Each connector 5 is inserted into the corresponding extension 22 through an interference fit to ensure that the driving force is accurately transmitted radially.

[0036] In some embodiments, the drive member 6 has two output shafts 61, which extend to both sides of the drive member 6 and are coaxially arranged. The two output shafts 61 are respectively connected to corresponding eccentric components, and the two eccentric components are respectively connected to corresponding actuators 16.

[0037] Specifically, such as Figure 8 , Figure 9 , Figure 12 , Figure 13 Figure 16 , Figure 17 As shown, in some embodiments, the drive unit 6 has two output shafts 61, which extend symmetrically from both sides of the drive unit 6 and are coaxially arranged to ensure the synchronicity of power transmission. The two output shafts 61 are respectively connected to the eccentric components on both sides, and the two eccentric components are respectively connected to the corresponding actuators 16, forming a bidirectional symmetrical drive structure. This design effectively counteracts the eccentric torque of single-shaft drive by evenly distributing the driving force to the eccentric components on both sides, reducing the overall vibration amplitude, and improving the stability of the air pump under high-speed operation. In addition, the dual output shaft 61 structure is suitable for high flow rate demand scenarios, and the number of cylinders can be flexibly expanded by synchronously driving multiple sets of actuators 4 to meet the diverse performance requirements of seats in different vehicle models.

[0038] In some embodiments, the end of the compression section 21 away from the extension section 22 is disposed toward the output end of the drive member 6.

[0039] Specifically, such as Figures 14-17 As shown, in some embodiments, the end of the compression section 21 away from the extension section 22 is disposed toward the output end of the drive member 6. That is, in this embodiment, a plurality of elastic cylinders 2 are arranged circumferentially on the outer wall of the sealing strip 3. The elastic cylinders 2 are fixed to the outer edge of the sealing strip 3 by an integrally formed flexible connection. The air outlet end of the elastic cylinder 2 is disposed toward the output end of the drive member 6. In this embodiment, the actuator 4 is composed of a base plate 41 and a side plate 42. The base plate 41 has a circular structure, and its outer edge is vertically connected to the side plate 42 through a continuous welding process to form an integrated frame structure. Multiple connectors 5 are arranged circumferentially around the inner wall of the side plate 42. The connectors 5 extend outward along the radial direction of the actuator 4, and their surfaces are polished to reduce motion friction. Each connector 5 is inserted into the corresponding extension 22 through an interference fit to ensure uniform transmission of radial driving force. This design, through the synergistic effect of the flexible fixing of the sealing strip 3 and the rigid support of the actuator 4, enables the elastic cylinder 2 to maintain stable axial alignment during radial reciprocating motion. At the same time, the modular layout simplifies the assembly process and significantly improves the structural reliability and maintenance convenience of the air pump.

[0040] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A radial compression air pump for automotive seats, characterized in that, include: The housing (1) defines an installation space and is provided with at least one air inlet (14) and at least one air outlet (15). An actuator (16) is provided in the installation space, the actuator (16) including a plurality of circumferentially arranged elastic cylinders (2); wherein the air passage from the air inlet (14) to the elastic cylinder (2) is configured to be unidirectional, and the air passage from the elastic cylinder (2) to the air outlet (15) is also configured to be unidirectional. A drive member (6) is disposed within the installation space, and the drive member (6) is at least partially surrounded by the actuator (16); the drive member (6) has at least one output shaft (61), the output shaft (61) is connected to an eccentric assembly, the eccentric assembly is provided with a plurality of circumferentially arranged connectors (5), each connector (5) is connected to the corresponding elastic cylinder (2); the drive member (6) is used to drive the eccentric assembly to move, so as to convert the rotational motion of the drive member (6) into linear reciprocating motion, so that each connector (5) drives the corresponding elastic cylinder (2) to reciprocate along the radial direction of the actuator (16).

2. The radial compression air pump for automotive seats according to claim 1, characterized in that, An intake check valve (23) is provided on the air path from the air inlet (14) to the elastic cylinder (2), and an outlet check valve (24) is provided on the air path from the elastic cylinder (2) to the air outlet (15).

3. A radial compression air pump for automotive seats according to claim 2, characterized in that, A fixing frame (7) is provided in the installation space. The fixing frame (7) is a ring structure. The actuator (16) is fixedly installed on the inner wall of the fixing frame (7).

4. A radial compression air pump for automotive seats according to claim 3, characterized in that, Also includes: The retainer (8) includes a connecting part (81) and a limiting part (82). The connecting part (81) is perpendicular to the limiting part (82). The limiting part (82) includes multiple limiting spaces. The limiting part (82) is inserted between the actuators (16), and the limiting space contains the elastic cylinder (2). The connecting part (81) is fixedly connected to the fixing frame (7). The retainer (8) is used to apply radial clamping force to the elastic cylinder (2).

5. A radial compression air pump for automotive seats according to claim 4, characterized in that, The elastic cylinder (2) includes an extension (22) and a compression section (21). The extension (22) is connected to the compression section (21). The compression section (21) has a compression space inside. The connectors (5) are inserted into the extension (22) one by one. The connectors (5) have an air inlet groove (51). A first elastic swing plate (17) is provided at the connection between the extension (22) and the compression section (21). The air inlet one-way valve (23) is composed of the first elastic swing plate (17), the air inlet groove (51) and the inner wall of the extension (22).

6. A radial compression air pump for automotive seats according to claim 4, characterized in that, The elastic cylinder (2) includes an extension (22) and a compression part (21). The extension (22) is connected to the compression part (21). The compression part (21) has a compression space inside. The connectors (5) are inserted into the extension (22) one by one. The end of the compression part (21) away from the extension (22) is connected to a sealing strip (3). The sealing strip (3) is provided with a second elastic swing plate (18). The fixing frame (7) has a first through hole (71) corresponding to the elastic cylinder (2). The exhaust one-way valve (24) is composed of the second elastic swing plate (18), the first through hole (71) and the side of the fixing frame (7) close to the second elastic swing plate (18).

7. A radial compression air pump for automotive seats according to claim 4, characterized in that, The eccentric component also includes: Actuator (4), wherein the actuator (4) has a plurality of connectors (5) arranged circumferentially; An eccentric wheel (9) is connected to the output shaft (61) of the drive member (6); The bearing (10) is disposed between the eccentric wheel (9) and the actuator (4).

8. A radial compression air pump for automotive seats according to claim 7, characterized in that, The drive unit (6) has two output shafts (61), which extend to both sides of the drive unit (6) and are coaxially arranged. The two output shafts (61) are respectively connected to the corresponding eccentric components, and the two eccentric components are respectively connected to the corresponding actuators (16).

9. A radial compression air pump for automotive seats according to claim 5 or 6, characterized in that, The end of the compression section (21) away from the extension section (22) is disposed toward the output end of the drive member (6).

10. A radial compression air pump for automotive seats according to claim 1, characterized in that, The housing (1) includes: an outer shell (11) and a base (12), the middle of the outer shell (11) and the base (12) forms the installation space, and a sealing ring (13) is provided between the outer shell (11) and the base (12); the outer shell (11) is provided with a plurality of air inlets (14) in the circumferential direction, and an air outlet is provided on the side wall of the outer shell (11), and the air outlet (15) is provided through the air outlet.

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