Air spring top cover assembly applied to suspension device and suspension device

Abstract

The utility model discloses an air spring top cover assembly applied to a suspension device and the suspension device, the air spring top cover assembly comprises an upper top cover, a lower top cover and a bushing, the upper top cover is fixedly connected with the lower top cover, the upper top cover comprises a first limiting part, a supporting part, a bushing mounting cavity and a limiting cavity, the first limiting part is arranged above the supporting part in the first direction, the first limiting part and the supporting part define a lining installation cavity, the lining is arranged in the lining installation cavity, the limiting cavity is arranged below the lining installation cavity in the first direction, the limiting cavity communicates with the lining installation cavity, and the limiting cavity is downwards provided with an opening in the first direction; the lower top cover is provided with an opening, the opening and the first limiting part are arranged at an interval in the first direction, the opening is used for allowing the lining to enter the lining mounting cavity, the lower top cover is provided with a second limiting part, and the second limiting part is opposite to the opening, arranged in the limiting cavity and used for supporting the lining. According to the utility model, the process steps can be simplified and the cost can be reduced while the bushing is compressed.

Description

Technical Field

[0001] The utility model relates to the field of automobile suspension devices, in particular to an air spring top cover assembly used in the suspension device and the suspension device. Background Art

[0002] An air spring is a flexible load-bearing element that utilizes the elastic properties of compressed air to provide support, vibration reduction, and height adjustment. It is widely used in automotive suspension systems and other applications. By adjusting the internal air pressure, it dynamically adapts to load changes, improving comfort and stability. An air spring typically has an air spring cover assembly and a bushing press-fitted into the cover assembly. The top of the bushing is typically open, and a clamping structure is typically required to prevent the bushing from being ejected during operation.

[0003] The common clamping structure on the market usually uses a retaining spring and a gasket to compress the bushing. However, this structure is relatively complex and has many parts, which leads to cumbersome assembly steps, high costs, and is not conducive to management. Utility Model Content

[0004] The purpose of this utility model is to solve the problems of complex structure and large number of parts of air spring top cover assembly. The utility model provides an air spring top cover assembly and suspension device for use in a suspension device, which can achieve bushing compression while simplifying the process steps and reducing raw material and management costs.

[0005] In order to solve the above technical problems, an embodiment of the present utility model discloses an air spring top cover assembly used for a suspension device, which includes an upper top cover, a lower top cover and a bushing, wherein the upper top cover is fixedly connected to the lower top cover; the upper top cover includes a first limiting portion, a supporting portion, a bushing mounting cavity and a limiting cavity, the first limiting portion is arranged above the supporting portion along a first direction for pressing the bushing, the first limiting portion and the supporting portion define the bushing mounting cavity, and the bushing is arranged in the bushing mounting cavity; the limiting cavity is arranged below the bushing mounting cavity along the first direction, the limiting cavity is communicated with the bushing mounting cavity, the limiting cavity is provided with an opening downwardly along the first direction, the opening and the first limiting portion are spaced apart along the first direction, and the opening is used for the bushing to enter the bushing mounting cavity; the lower top cover is provided with a second limiting portion, the second limiting portion is opposite to the opening, and the second limiting portion is arranged in the limiting cavity for supporting the bushing.

[0006] By adopting the above technical solution, the upper cover is provided with a first limiting portion, a supporting portion, a bushing installation cavity and a limiting cavity, the limiting cavity is provided with an opening downward along the first direction, and the lower cover is provided with a second limiting portion. During the assembly process, the bushing is first placed above the second limiting portion, the upper surface of the second limiting portion is against the lower surface of the bushing, the second limiting portion is used to support the bushing, and then the upper cover is pressed over the bushing through the opening, the upper surface of the bushing is against the lower surface of the first limiting portion, and the second limiting portion is assembled in the limiting cavity. Then fix the supporting part to the lower top cover, that is, fix the upper top cover to the lower top cover. At this time, the first limiting part presses the bushing, and at the same time, the second limiting part supports the bushing. When the bushing is compressed by external thrust, the first limiting part, the second limiting part and the supporting part limit the bushing in the bushing installation cavity to prevent the bushing from being ejected during the compression process; and the bushing is directly installed into the bushing installation cavity through the opening, and then the upper top cover and the lower top cover are fixedly connected to complete the assembly, which can effectively reduce the assembly steps and improve production efficiency.

[0007] According to another specific embodiment of the present utility model, the bottom of the support part has a first connecting surface, the lower top cover is provided with a second connecting surface corresponding to the first connecting surface, the limiting cavity is provided with a third connecting surface, and the second limiting part is provided with a fourth connecting surface; the first connecting surface is fixedly connected to the second connecting surface, and the third connecting surface is fixedly connected to the fourth connecting surface.

[0008] By adopting the above technical solution, the support portion and the lower top cover are fixedly connected by fixing the first connecting surface to the second connecting surface, and the third connecting surface to the fourth connecting surface.

[0009] According to another specific embodiment of the present utility model, the third connecting surface and the fourth connecting surface are inclined along the first direction, the inclination angles of the third connecting surface and the fourth connecting surface are consistent, and the radial dimensions of the upper end surfaces of the third connecting surface and the fourth connecting surface along the first direction are smaller than the radial dimensions of the lower end surfaces; the third connecting surface defines the opening.

[0010] By adopting the above technical solution, the third connecting surface is tilted along the first direction, and the radial dimension of the upper end surface of the third connecting surface along the first direction is smaller than the radial dimension of the lower end surface, so that the bushing can pass through the opening along the third connecting surface and be sent into the bushing installation cavity. At the same time, the fourth connecting surface is tilted along the first direction, and the inclination angles of the third connecting surface and the fourth connecting surface are consistent, so as to ensure that the upper top cover and the lower top cover can be firmly connected while preventing air leakage and enhancing the sealing.

[0011] According to another specific embodiment of the present invention, the first connecting surface and the second connecting surface, and the third connecting surface and the fourth connecting surface are respectively fixed by welding.

[0012] By adopting the above technical solution, better sealing and stability can be achieved by fixing the first connection surface and the second connection surface, and the third connection surface and the fourth connection surface respectively through welding.

[0013] According to another specific embodiment of the present invention, the radial dimension of the limiting cavity gradually decreases toward the side away from the second limiting portion; the radial dimension of the second limiting portion gradually increases toward the side away from the limiting cavity; the radial dimension of the limiting cavity corresponds to the radial dimension of the second limiting portion.

[0014] By adopting the above technical solution, the spatial area of ​​the limiting cavity matches the volume of the second limiting portion, so that the second limiting portion can fill the entire limiting cavity, thereby achieving better sealing and stability.

[0015] According to another specific embodiment of the present utility model, the first limiting portion is provided with a groove, and the bottom of the groove is provided with a first through hole along the first direction, and the first through hole is used for the shock absorber assembly to pass through.

[0016] With the above technical solution, the first through hole is used for the shock absorber assembly to pass through, which ensures that the first limiting portion can press the bushing while reducing the volume of the first limiting portion, thereby reducing the weight of the air spring and saving costs.

[0017] According to another specific embodiment of the present invention, the inner wall of the groove is provided with reinforcing ribs.

[0018] By adopting the above technical solution, the strength of the first limiting portion is enhanced by providing reinforcing ribs in the groove.

[0019] According to another specific embodiment of the present invention, the bushing is provided with a mounting groove for fixing the shock absorber assembly, and a second through hole is provided at the bottom of the mounting groove, and the second through hole is connected to the first through hole; the lower top cover is provided with a center hole, and the center hole is used for the shock absorber assembly to pass through; the center lines of the first through hole, the second through hole, the mounting groove and the center hole overlap.

[0020] By adopting the above technical solution, the first limiting portion, the bushing and the lower top cover are provided with a space through which the shock absorber assembly can pass, wherein the first through hole, the second through hole, the mounting groove and the center hole are connected. The shock absorber assembly is fixed in the mounting groove provided in the bushing and is used to press the bushing upward in the first direction to cause the bushing to be compressed and deformed to achieve a shock-absorbing effect.

[0021] According to another specific embodiment of the present invention, an annular groove is provided on the upper surface of the bushing, and a sealing ring is arranged in the annular groove. The sealing ring is against the first limiting portion in the first direction, and the sealing ring is against the supporting portion in the second direction; the first direction is perpendicular to the second direction.

[0022] By adopting the above technical solution, the sealing ring abuts against the first limiting portion and the supporting portion respectively, thereby achieving better sealing performance.

[0023] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a suspension device, which includes at least the air spring top cover assembly in any of the above embodiments, which includes a shock absorber assembly, and the shock absorber assembly is fixed to the suspension device, and the shock absorber assembly is connected to the bushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A cross-sectional view illustrating an air spring top cover assembly in some embodiments;

[0025] Figure 2 A three-dimensional schematic diagram of an air spring top cover assembly provided in an embodiment of the present application is shown;

[0026] Figure 3 A cross-sectional view of an air spring top cover assembly according to an embodiment of the present application is shown;

[0027] Figure 4 A cross-sectional exploded view of an air spring top cover assembly provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0028] The following is an explanation of the implementation of the present invention by means of specific specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to this implementation. On the contrary, the purpose of introducing the utility model in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide an in-depth understanding of the present invention, the following description will contain many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0029] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0030] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the utility model.

[0031] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0032] In the description of this embodiment, it should be noted that, unless otherwise specified or limited, the terms "disposed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this embodiment based on specific circumstances.

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0034] An air spring is a flexible load-bearing element that uses the elastic properties of compressed air to achieve support, vibration reduction, and height adjustment. It is widely used in fields such as automotive suspension systems. By adjusting the internal air pressure, it can dynamically adapt to load changes, improving comfort and stability. Usually, an air spring top cover assembly is provided on the top of the air spring, as well as a bushing press-fitted into the top cover assembly. The upper portion of the bushing is usually open. In order to ensure that the bushing is not ejected during the compression process, a clamping structure is generally required above the bushing. However, in some existing embodiments, the clamping structure usually uses a retaining spring and a gasket to compress the bushing. However, this method is relatively complex in structure, with a large number of parts, resulting in many assembly steps, high costs, and inconvenient management.

[0035] In some embodiments, reference Figure 1 , Figure 1A cross-sectional view of the top cover 100' in some embodiments is shown, wherein the liner 400' is fixed to the interior of the upper cover 200' by means of a retaining spring 1 and a gasket 2. During the assembly process, the liner 400' and the gasket 2 need to be placed inside the upper cover 200' first, and then the retaining spring 1 is inserted into the internal slot of the upper cover 200'. Finally, the upper cover 200' and the lower cover 300' are fixed, resulting in many parts, complicated assembly steps, high costs, and inconvenient management.

[0036] To this end, an embodiment of the present application provides an air spring top cover assembly applied to a suspension device, wherein the air spring top cover assembly is fixed to the suspension device through a shock absorber assembly, wherein the bushing is directly pressed into place through the first limiting portion of the upper top cover, omitting other parts and simplifying the assembly steps.

[0037] It should be noted that in this embodiment, the air spring top cover assembly is a cylindrical body as a whole, but those skilled in the art will understand that in other embodiments, the air spring top cover assembly may also be other shapes, such as a rectangular body, etc., and this application does not limit this.

[0038] Specifically, refer to Figures 2 to 4 The air spring top cover assembly 100 of the embodiment of the present application includes an upper cover 200, a lower cover 300 and a bushing 400. The upper cover 200 is fixedly connected to the lower cover 300. The upper cover 200 includes a first limiting portion 210, a supporting portion 220, a bushing installation cavity 230 and a limiting cavity 240 (such as Figure 4 As shown), the first limiting portion 210 is arranged above the supporting portion 220 along the first direction Z, and is used to press the bushing 400. The first limiting portion 210 and the supporting portion 220 define a bushing installation cavity 230, and the bushing 400 is arranged in the bushing installation cavity 230; the limiting cavity 240 is arranged below the bushing installation cavity 230 along the first direction Z, and the limiting cavity 240 is communicated with the bushing installation cavity 230. The limiting cavity 240 is downwardly provided with an opening 241 along the first direction Z, and the opening 241 is spaced apart from the first limiting portion 210 along the first direction Z. The opening 241 is used for allowing the bushing 400 to enter the bushing installation cavity 230; the lower top cover 300 is provided with a second limiting portion 310, and the second limiting portion 310 is opposite to the opening 241. The second limiting portion 310 is arranged in the limiting cavity 240 and is used to support the bushing 400.

[0039] It should be noted that the reference Figure 3 and Figure 4 In this embodiment, a second direction X is further provided, and the first direction Z is perpendicular to the second direction X.

[0040] Specifically, the upper cover 200 is provided with a first limiting portion 210, a supporting portion 220, a bushing installation cavity 230 and a limiting cavity 240, wherein the first limiting portion 210 and the supporting portion 220 are integrally formed, the limiting cavity 240 is provided with an opening 241 downward along the first direction Z, and the lower cover 300 is provided with a second limiting portion 310. During the assembly process, the bushing 400 is first placed above the second limiting portion 310, and the upper surface 311 of the second limiting portion 310 is abutted against the lower surface 410 of the bushing 400. The second limiting portion 310 is used to support the bushing 400, and then the upper cover 200 is pressed onto the bushing 400 through the opening 241 (as shown in FIG. Figure 4 The installation direction is shown in FIG. 2 ), the upper surface 420 of the bushing 400 abuts against the lower surface 211 of the first limiting portion 210, and the second limiting portion 310 is assembled in the limiting cavity 240. Then, the support portion 220 is fixed to the lower top cover 300, that is, the upper top cover 200 is fixed to the lower top cover 300. At this time, the first limiting portion 210 presses the bushing 400. At the same time, the second limiting portion 310 supports the bushing 400. When the bushing 400 is compressed by external thrust, the first limiting portion 210, the second limiting portion 310 and the support portion 220 limit the bushing 400 in the bushing installation cavity 230 to prevent the bushing 400 from being ejected during the compression process. This embodiment can effectively reduce the assembly steps and improve production efficiency.

[0041] In this embodiment, the bushing 400 is made of rubber, but those skilled in the art will appreciate that in other embodiments, the bushing 400 may be made of other materials, such as soft rubber, which can achieve the same function.

[0042] refer to Figure 4 The bottom of the support part 220 has a first connecting surface 221, the lower top cover 300 is provided with a second connecting surface 320 corresponding to the first connecting surface 221, the limiting cavity 240 is provided with a third connecting surface 242, and the second limiting part 310 is provided with a fourth connecting surface 312. The first connecting surface 221 is fixedly connected to the second connecting surface 320, and the third connecting surface 242 is fixedly connected to the fourth connecting surface 312.

[0043] Specifically, the first connecting surface 221 is connected to the third connecting surface 242, and the second connecting surface 320 is connected to the fourth connecting surface 312. By fixing the first connecting surface 221 to the second connecting surface 320 and the third connecting surface 242 to the fourth connecting surface 312, the upper cover 200 and the lower cover 300 are fixedly connected.

[0044] Further, refer to Figure 4The third connecting surface 242 and the fourth connecting surface 312 are inclined along the first direction Z, and the inclination angle α of the third connecting surface 242 and the fourth connecting surface 312 is consistent. The radial dimension h1 of the upper end surface of the third connecting surface 242 and the fourth connecting surface 312 along the first direction Z is smaller than the radial dimension h2 of the lower end surface, and the third connecting surface 242 defines an opening 241.

[0045] Exemplarily, the tilt angle α is an acute angle, such as 15°, 33°, 56°, or 70°. In some possible embodiments, the tilt angle α may be 90°, which is not limited in this application.

[0046] Specifically, the opening 241 is composed of a third connecting surface 242 to facilitate the bushing 400 to be sent into the bushing installation cavity 230 through the opening 241 along the third connecting surface 242. The fourth connecting surface 312 is fitted with the third connecting surface 242 to ensure that the upper cover 200 and the lower cover 300 can be firmly connected while preventing air leakage and enhancing the sealing.

[0047] For example, the third connecting surface 242 is tilted along the first direction Z, and the radial dimension h1 of the upper end surface of the third connecting surface 242 along the first direction Z is smaller than the radial dimension h2 of the lower end surface. At the same time, the fourth connecting surface 312 is tilted along the first direction Z, and the inclination angles of the third connecting surface 242 and the fourth connecting surface 312 are consistent. In other words, the radial dimension of the opening 241 gradually increases downward along the first direction Z. This is to facilitate rapid positioning during assembly, so that the bushing 400 can be quickly inserted into the bushing installation cavity 230 along the third connecting surface 242. However, those skilled in the art will appreciate that in other embodiments, the third connecting surface 242 can be arranged along the first direction Z, and this application is not limited to this.

[0048] refer to Figure 3 and Figure 4 The first connection surface 221 and the second connection surface 320, and the third connection surface 242 and the fourth connection surface 312 are fixed by welding.

[0049] In this embodiment, the first connecting surface 221 and the second connecting surface 320, and the third connecting surface 242 and the fourth connecting surface 312 are fixed by hot air welding. However, those skilled in the art will appreciate that in other embodiments, the first connecting surface 221 and the second connecting surface 320, and the third connecting surface 242 and the fourth connecting surface 312 may be fixed by other connection methods, such as gluing, threaded fastening, or snap fastening, and this application does not limit this.

[0050] Further, refer to Figure 3 and Figure 4The radial dimension h3 of the limiting cavity 240 gradually decreases toward the side away from the second limiting portion 310, and the radial dimension h4 of the second limiting portion 310 gradually increases toward the side away from the limiting cavity 240. The radial dimension h3 of the limiting cavity 240 corresponds to the radial dimension h4 of the second limiting portion 310.

[0051] Specifically, the spatial area of ​​the limiting cavity 240 matches the volume of the second limiting portion 310 , so that the second limiting portion 310 can fill the entire limiting cavity 240 , thereby achieving better sealing and stability.

[0052] For example, when the air spring is subjected to vibration caused by the shock absorber assembly, the second limiting portion 310 and the limiting cavity 240 cooperate with each other in a concave-convex manner, so that limiting in the second direction X can be achieved.

[0053] Back to Figure 2 The first limiting portion 210 is provided with a groove 212 , a first through hole 2121 is provided at the bottom of the groove 212 along the first direction Z, and a reinforcing rib 2122 is provided in the groove 212 .

[0054] In this embodiment, a reinforcing rib 2122 is provided in the groove 212 to enhance the strength of the first limiting portion 210 .

[0055] It should be noted that, in other possible embodiments, the first limiting portion 210 is only provided with a first through hole 2121, and the first through hole 2121 is arranged to pass through the first limiting portion 210 along the first direction Z. The first through hole 2121 is used for the shock absorber assembly to pass through, and this application does not impose any restrictions on this.

[0056] refer to Figure 3 The bushing 400 is provided with a mounting groove 430 for fixing the shock absorber assembly. A second through hole 431 is provided at the bottom of the mounting groove 430, and the second through hole 431 is connected to the first through hole 2121; the lower top cover 300 is provided with a center hole 330, and the center hole 330 is used for the shock absorber assembly to pass through. The center lines A of the first through hole 2121, the second through hole 431, the mounting groove 430 and the center hole 330 overlap.

[0057] Specifically, the first limiting portion 210, the bushing 400 and the lower top cover 300 are provided with a space through which the shock absorber assembly can pass, wherein the first through hole 2121, the second through hole 431, the mounting groove 430 and the center hole 330 are connected. The shock absorber assembly is fixed in the mounting groove 430 provided in the bushing 400, and is used to press the bushing 400 upward along the first direction Z to cause the bushing 400 to be compressed and deformed to achieve a shock-absorbing effect.

[0058] For example, refer to Figure 3The shock absorber assembly is fixed to the mounting groove 430 by nuts 432 and washers 433. That is, the shock absorber assembly is fixed to the bushing 400 by bolts and nuts. However, those skilled in the art will appreciate that in other embodiments, the shock absorber assembly can also be fixed to the bushing 400 by other means, such as vulcanization connection, snap fastening, etc.

[0059] Further, refer to Figure 3 and Figure 4 The upper surface 420 of the bushing 400 is provided with an annular groove 440, and the sealing ring 450 is arranged in the annular groove 440. The sealing ring 450 abuts against the first limiting portion 210 in the first direction Z, and abuts against the supporting portion 220 in the second direction X.

[0060] Specifically, the sealing ring 450 abuts against the first limiting portion 210 and the supporting portion 220 respectively, thereby achieving better sealing.

[0061] Exemplarily, the sealing ring 450 is made of rubber, but those skilled in the art will appreciate that in other embodiments, the sealing ring may also be made of other materials, such as soft rubber.

[0062] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above description is provided to further illustrate the present invention in conjunction with specific embodiments, and that the present invention should not be construed as being limited to these descriptions. Those skilled in the art may make various changes in form and detail, including simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. An air spring top cover assembly used in a suspension device, characterized in that: include: An upper cover, a lower cover, and a bushing, wherein the upper cover is fixedly connected to the lower cover; The upper cover includes a first limiting portion, a supporting portion, a bushing installation cavity and a limiting cavity. The first limiting portion is arranged above the supporting portion along a first direction and is used to press the bushing. The first limiting portion and the supporting portion define the bushing installation cavity. The bushing is arranged in the bushing installation cavity. The limiting cavity is arranged below the bushing installation cavity along the first direction, the limiting cavity is communicated with the bushing installation cavity, the limiting cavity is provided with an opening downward along the first direction, the opening is spaced apart from the first limiting portion along the first direction, and the opening is used for allowing the bushing to enter the bushing installation cavity; The lower top cover is provided with a second limiting portion, the second limiting portion is opposite to the opening, and the second limiting portion is arranged in the limiting cavity for supporting the bushing.

2. The air spring top cover assembly according to claim 1, wherein: The bottom of the support portion has a first connection surface, the lower top cover has a second connection surface corresponding to the first connection surface, the limiting cavity has a third connection surface, and the second limiting portion has a fourth connection surface; The first connecting surface is fixedly connected to the second connecting surface, and the third connecting surface is fixedly connected to the fourth connecting surface.

3. The air spring top cover assembly according to claim 2, wherein: The third connecting surface and the fourth connecting surface are arranged obliquely along the first direction, the inclination angles of the third connecting surface and the fourth connecting surface are consistent, and the radial dimensions of the upper end surfaces of the third connecting surface and the fourth connecting surface along the first direction are smaller than the radial dimensions of the lower end surfaces; The third connecting surface defines the opening.

4. The air spring top cover assembly according to claim 3, wherein: The first connecting surface and the second connecting surface, and the third connecting surface and the fourth connecting surface are fixed by welding.

5. The air spring top cover assembly according to claim 1, wherein: The radial dimension of the limiting cavity gradually decreases toward the side away from the second limiting portion; The radial dimension of the second limiting portion gradually increases toward a side away from the limiting cavity; The radial dimension of the limiting cavity corresponds to the radial dimension of the second limiting portion.

6. The air spring top cover assembly according to claim 1, wherein: The first limiting portion is provided with a groove, and the bottom of the groove is provided with a first through hole along the first direction, and the first through hole is used for the shock absorber assembly to pass through.

7. The air spring top cover assembly according to claim 6, wherein: The inner wall of the groove is provided with reinforcing ribs.

8. The air spring top cover assembly according to claim 7, wherein: The bushing is provided with a mounting groove for fixing the shock absorber assembly, and a second through hole is provided at the bottom of the mounting groove, and the second through hole is connected to the first through hole; The lower top cover is provided with a central hole, and the central hole is used for the shock absorber assembly to pass through; Center lines of the first through hole, the second through hole, the mounting groove, and the center hole overlap.

9. The air spring top cover assembly according to claim 1, wherein: An annular groove is provided on the upper surface of the bushing, and a sealing ring is provided in the annular groove. The sealing ring abuts against the first limiting portion in the first direction, and abuts against the supporting portion in the second direction. The first direction is perpendicular to the second direction.

10. A suspension device, characterized in that: include: The air spring top cover assembly according to any one of claims 1 to 9; A shock absorber assembly is fixed to the suspension device and connected to the bushing.

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