Air spring structure

Abstract

The utility model provides a kind of air spring structure, including coaxially arranged air chamber upper cover, air chamber insert, air chamber lower cover;The middle part of air chamber upper cover is provided with upper cover through-hole, and the inner wall of upper cover through-hole is spaced apart and is provided with several connecting ribs along circumference;Air chamber insert is embedded in upper cover through-hole, and the outer peripheral wall of air chamber insert is interference fit with connecting rib, to realize air chamber upper cover and air chamber insert fastening connection;Upper annular cavity is arranged on air chamber upper cover and located the outer periphery of upper cover through-hole;Air chamber lower cover is fixedly connected in air chamber upper cover lower part, and air chamber lower cover is provided with lower cover through-hole along axial direction and penetrates in the middle part;Lower annular cavity is arranged on air chamber lower cover and located the outer periphery of lower cover through-hole, and upper annular cavity and lower annular cavity form closed chamber by surrounding.The utility model has the advantages that the structure is designed and cooperated by air chamber upper cover, air chamber insert and air chamber lower cover, solve the problem that component cannot be replaced individually, poor adaptability and high cost caused by integrated structure in background art.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive suspension system components, specifically to an air spring structure. Background Technology

[0002] Air springs are a key component of automotive suspension systems. By changing the volume and pressure of air in their internal sealed chambers, they achieve load bearing, vibration damping, and vehicle height adjustment, thus balancing driving comfort and handling performance.

[0003] Most air spring chambers on the market are manufactured using a one-piece injection molding process. While this process has the advantage of convenient processing, it has obvious drawbacks: the integrated structure of the one-piece molded parts is complex, resulting in higher production costs. Furthermore, it is difficult to replace easily damaged parts such as seals, buffer blocks, and bushings during subsequent maintenance. This makes it difficult to flexibly adapt to the assembly requirements of different vehicle models, thus limiting the product's versatility and economic efficiency.

[0004] Therefore, there is an urgent need in this field for an air spring structure that is more optimized, easier to maintain, and can be flexibly adapted to the needs of different vehicle models. Utility Model Content

[0005] The present invention aims to address the technical problems of high cost, inconvenient maintenance, and poor versatility of the existing integrated air spring chamber structure. To overcome the above-mentioned defects of the prior art, the present invention provides an air spring structure that achieves lightweight, easy maintenance, and high adaptability through a split structure and optimized structural design.

[0006] To achieve the purpose of this utility model, the following technical solution is adopted: An air spring structure includes a coaxially arranged upper air chamber cover, an air chamber insert, and a lower air chamber cover. The upper air chamber cover has an axially extending through-hole in its center, and the inner wall of the through-hole is provided with a plurality of radially protruding connecting ribs spaced circumferentially. The air chamber insert is embedded in the through-hole, and its outer peripheral wall is interference-fitted with the connecting ribs to achieve a tight connection between the upper air chamber cover and the air chamber insert. An upper annular cavity is provided on the upper air chamber cover and located on the outer periphery of the through-hole. The lower air chamber cover is fixedly connected to the lower part of the upper air chamber cover, and a lower through-hole is provided axially in its center. A lower annular cavity is provided on the lower air chamber cover and located on the outer periphery of the through-hole. The upper and lower annular cavities together form a sealed chamber. An insert through-hole is provided axially in its center; the insert through-hole communicates with the lower through-hole. This constitutes the core of a split-assembly structure. By employing a separate design and coordination of the upper air chamber cover, air chamber insert, and lower air chamber cover, the problems of non-replaceable components, poor adaptability, and high cost inherent in the unibody structure of the prior art are resolved. This lays the structural foundation for achieving lightweight design, ease of maintenance, and compatibility with different vehicle models.

[0007] Preferably, each connecting rib is integrally formed on the inner wall of the through hole in the upper cover, and a guide slope is provided on the upper part of the connecting rib; the guide slope slopes from top to bottom and from the outside to the inside. The guide slope facilitates the insertion of the air chamber insert, while also ensuring that the lower part of the connecting rib abuts against the air chamber insert. This ensures both the tightness and reliability of the interference fit, reduces assembly difficulty, provides good tolerance, and avoids component damage that may be caused by rigid connections.

[0008] Preferably, there are twelve connecting ribs, which are evenly distributed circumferentially along the through-hole of the upper cover. The specific number and evenly distributed circumferential distribution of these connecting ribs ensure uniform stress distribution and a stable connection between the air chamber insert and the air chamber upper cover, effectively preventing loosening or wear caused by stress concentration, and improving the reliability and service life of the product.

[0009] Preferably, an air chamber sealing ring is also provided between the outer peripheral wall of the air chamber insert and the inner peripheral wall of the air chamber cover. Based on the interference fit mechanical connection, an independent sealing element is added, providing double protection for the airtightness of the sealed chamber, effectively preventing air leakage and ensuring the stable and reliable core function of the air spring.

[0010] Preferably, the outer peripheral wall of the air chamber insert has an inwardly recessed first annular step; the inner peripheral wall of the air chamber cover has an outwardly recessed second annular step, the first and second annular steps forming an annular limiting cavity; the outer peripheral wall of the air chamber sealing ring abuts against the outer periphery of the annular limiting cavity, and the inner peripheral wall of the air chamber sealing ring abuts against the inner periphery of the annular limiting cavity. The annular limiting cavity formed by the enclosure facilitates the provision of installation space for the air chamber sealing ring, and also facilitates the limiting of the air chamber sealing ring between the air chamber insert and the air chamber cover.

[0011] Preferably, the air chamber insert includes an integrally formed annular connecting disc and a cylindrical body; the annular connecting disc is fixedly attached to the top surface of the air chamber cover, and the cylindrical body is coaxially embedded in the through hole of the cover, with the outer peripheral wall of the cylindrical body tightly fitted to the connecting rib. This structure achieves dual axial and end-face positioning and load-bearing for the air chamber insert and the air chamber cover, enhancing the connection rigidity and the stability of the overall structure.

[0012] Preferably, a positioning hole is provided through the annular connecting plate; a positioning protrusion that mates with the positioning hole is provided on the top surface of the air chamber cover, and the positioning protrusion is inserted into the positioning hole to achieve positioning. This achieves precise circumferential positioning between the air chamber insert and the air chamber cover, effectively preventing relative rotation between the two and ensuring the attitude stability and functional reliability of the component under dynamic load.

[0013] Preferably, the bottom surface of the annular connecting plate is provided with a positioning post, and the top surface of the air chamber cover is provided with a positioning slot that mates with the positioning post. The positioning post is inserted into the positioning slot to achieve positioning. This achieves precise circumferential positioning between the air chamber insert and the air chamber cover, effectively preventing relative rotation between the two and ensuring the attitude stability and functional reliability of the component under dynamic loads.

[0014] Preferably, the chamber insert is made of aluminum alloy; the upper and lower chamber covers are both made of plastic, and the upper and lower chamber covers are bonded together using hot gas welding to form a sealed connection. While ensuring structural strength and rigidity, the aluminum alloy chamber insert significantly reduces the weight of the entire component, contributing to improved vehicle energy efficiency and handling performance. Using plastic, compared to metal, achieves lightweighting and reduces costs. The hot gas welding connection allows for more complex chamber structure designs, with good sealing and high strength at the joints, improving functional integration and manufacturing flexibility.

[0015] Preferably, the system also includes an air chamber insert ring, wherein an annular groove is provided on the inner peripheral wall of the air chamber lower cover, and the air chamber insert ring is embedded in the air chamber lower cover. The air chamber insert ring serves as a reinforcing structure, enhancing the local structural strength and wear resistance of the air chamber lower cover, and improving the reliability and durability of its connection with other components.

[0016] The advantages of this utility model are: It adopts a separate assembly structure for the air chamber upper cover, air chamber insert, and air chamber lower cover, solving the problems of inconvenient maintenance and poor versatility of one-piece molded structures. It allows for flexible replacement of easily damaged parts such as the top rubber bushing and buffer block, adapting to the assembly needs of different vehicle models and improving the product's economic efficiency. The connecting ribs achieve an interference fit through elastic deformation, facilitating assembly and buffering vibration impact. The design of 12 evenly distributed circumferential connecting ribs ensures balanced force distribution on the air chamber insert, improving connection stability and structural strength. The air chamber sealing ring fills the fitting gap, enhancing the sealing performance of the sealed chamber, preventing air leakage, ensuring stable air spring pressure, and improving operational reliability. The dual positioning structure (positioning protrusion and positioning hole, positioning pin and positioning slot) further improves assembly accuracy and avoids relative displacement of components. The air chamber upper cover and lower cover are made of plastic and connected by hot gas welding, balancing lightweight and sealing performance, and adapting to complex chamber structure designs. The aluminum alloy air chamber insert further reduces overall weight, optimizing vehicle energy consumption and handling performance, while also possessing good mechanical properties and durability. By using an insert ring in the air chamber, the structural strength and assembly compatibility of the lower cover of the air chamber are improved, the processing flow is simplified, production costs are reduced, and functional failures caused by loose insert rings are avoided. Attached Figure Description

[0017] Figure 1 is a structural schematic diagram of the air spring structure of this utility model. Figure 2 is a cross-sectional view of the air spring structure of this utility model. Figure 3 is an exploded view of the air spring structure of this utility model. Figure 4 is a cross-sectional view of the air chamber cover and air chamber insert of this utility model.

[0018] Explanation of reference numerals in the attached figures: 1. Air chamber top cover; 10. Top cover through hole; 11. Upper annular cavity; 12. Positioning protrusion; 13. Positioning slot; 2. Air chamber insert; 20. Insert through hole; 21. Annular connecting plate; 22. Cylindrical body; 23. Positioning hole; 24. Positioning pin; 3. Air chamber bottom cover; 30. Bottom cover through hole; 31. Lower annular cavity; 4. Connecting rib; 41. Guide slope; 5. Air chamber sealing ring; 50. Annular limiting cavity; 6. Air chamber insert ring. Detailed Implementation

[0019] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0020] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0021] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0022] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] like Figures 1 to 4 As shown, an air spring structure includes a coaxially arranged upper air chamber cover 1, an air chamber insert 2, and a lower air chamber cover 3. The upper air chamber cover 1 has an axially extending through-hole 10 in its center. The inner wall of the through-hole 10 is provided with a plurality of radially protruding connecting ribs 4 spaced circumferentially. The air chamber insert 2 is embedded in the through-hole 10, and its outer peripheral wall is press-fitted with the connecting ribs 4 to achieve a tight connection between the upper air chamber cover 1 and the air chamber insert 2. An upper annular cavity 11 is provided on the outer periphery of the upper cover through hole 10; the lower air chamber cover 3 is fixedly connected to the lower part of the upper air chamber cover 1, and a lower cover through hole 30 is provided axially through the middle of the lower air chamber cover 3; a lower annular cavity 31 is provided on the lower air chamber cover 3 and on the outer periphery of the lower cover through hole 30. The upper annular cavity 11 and the lower annular cavity 31 enclose a sealed chamber, and an insert through hole 20 is provided axially through the middle of the air chamber insert 2; the insert through hole 20 communicates with the lower cover through hole 30. The air chamber upper cover 1, air chamber insert 2, and air chamber lower cover 3 adopt a split assembly structure, which solves the problems of inconvenient maintenance and poor versatility of the one-piece molded structure, and can flexibly adapt to the assembly requirements of different vehicle models. The tight connection is achieved by the interference fit between the connecting rib 4 and the air chamber insert 2, which is simple and reliable, and reduces the processing complexity and production cost. The sealed chamber and the communicating through hole design ensure the realization of the core functions of air spring load bearing, vibration buffering and vehicle height adjustment.

[0024] like Figures 1 to 4As shown, there are twelve connecting ribs 4, evenly distributed circumferentially along the through hole 10 of the upper cover. These twelve evenly distributed connecting ribs ensure balanced force distribution on the air chamber insert 2, preventing structural damage caused by localized stress concentration and improving connection strength and sealing. The evenly distributed design ensures the coaxiality of the air chamber insert 2 during installation, ensuring stable force distribution during air spring operation and optimizing vibration damping and height adjustment performance. Each connecting rib 4 is integrally formed on the inner wall of the through hole 10 of the upper cover, and a guide slope 41 is provided on the upper part of the connecting rib 4; the guide slope 41 slopes from top to bottom and from the outside to the inside. During assembly, the connecting ribs 4 are compressed by the air chamber insert 2, resulting in elastic deformation, thereby achieving an interference fit between the air chamber upper cover 1 and the air chamber insert 2. The clamping force generated by the elastic deformation makes the connection between the air chamber upper cover 1 and the air chamber insert 2 tighter, while reducing assembly precision requirements and minimizing the impact of machining errors.

[0025] like Figure 3 As shown, an air chamber sealing ring 5 is also provided between the outer peripheral wall of the air chamber insert 2 and the inner peripheral wall of the air chamber cover 1. In this embodiment, the outer peripheral wall of the air chamber insert 2 is provided with an inwardly recessed first annular step; the inner peripheral wall of the air chamber cover 1 is provided with an outwardly recessed second annular step, and the first and second annular steps surround to form an annular limiting cavity 50; the outer peripheral wall of the air chamber sealing ring 5 abuts against the outer periphery of the annular limiting cavity 50, and the inner peripheral wall of the air chamber sealing ring 5 abuts against the inner periphery of the annular limiting cavity 50. During assembly, the air chamber sealing ring 5 is locked in the annular limiting cavity 50. By filling the gap between the air chamber insert 2 and the air chamber cover 1 through the air chamber sealing ring 5, the sealing performance is enhanced, air leakage is prevented, air pressure is ensured to be stable, and the working reliability of the air spring is improved. The sealing structure is simple, easy to replace, reduces maintenance costs, and extends the overall service life of the product.

[0026] like Figures 1 to 4 As shown, the air chamber insert 2 includes an integrally formed annular connecting disc 21 and a cylindrical body 22. The annular connecting disc 21 is fixedly attached to the top surface of the air chamber cover 1, and the cylindrical body 22 is coaxially embedded in the through hole 10 of the cover, with the outer peripheral wall of the cylindrical body 22 tightly fitted to the connecting rib 4. The air chamber insert 2, with the annular connecting disc 21 and the cylindrical body 22 integrally formed, has high structural strength, and the annular connecting disc 21 can achieve precise positioning and stable attachment with the air chamber cover 1, improving assembly accuracy. The split design allows the air chamber insert 2 to be disassembled and replaced separately, facilitating maintenance of vulnerable parts such as the top rubber bushing and buffer block, and improving product versatility and economy.

[0027] like Figures 3 to 4As shown, a positioning hole 23 is provided through the annular connecting plate 21; a positioning protrusion 12 is provided on the top surface of the air chamber cover 1, which cooperates with the positioning hole 23. The positioning protrusion 12 is inserted into the positioning hole 23 to limit the rotation of the air spring relative to the air chamber insert 2, thereby achieving circumferential fixation of the air chamber insert 2. The cooperation between the positioning protrusion 12 and the positioning hole 23 enables rapid positioning of the air chamber insert 2 and the air chamber cover 1, simplifying the assembly process and improving assembly efficiency. Limiting the circumferential rotation of the air chamber insert 2 prevents relative displacement of components due to vibration during operation, ensuring connection stability and sealing reliability. A positioning pin 24 is provided on the bottom surface of the annular connecting plate 21, and a positioning slot 13 is provided on the top surface of the air chamber cover 1, which cooperates with the positioning pin 24. The positioning pin 24 is inserted into the positioning slot 13 to achieve positioning. The dual positioning structure of the positioning pin 24 and the positioning slot 13 further improves the installation accuracy and stability of the air chamber insert 2, preventing axial and circumferential displacement. The dual positioning design reduces the difficulty of alignment during assembly, while also dispersing the stress generated by vibration and extending the service life of the connection parts.

[0028] The air chamber insert 2 is made of aluminum alloy. Aluminum alloy has low density and high strength, significantly reducing the overall weight of the air spring, achieving lightweight design, and optimizing vehicle energy consumption and handling performance. Aluminum alloy is corrosion-resistant and wear-resistant, extending the service life of the air chamber insert 2, while also being easy to process and form, ensuring the interference fit precision with the connecting rib 4. The upper air chamber cover 1 and the lower air chamber cover 3 are both made of plastic, and the upper air chamber cover 1 and the lower air chamber cover 3 are bonded together using hot gas welding to form a sealed connection. The plastic upper air chamber cover 1 and the lower air chamber cover 3 are lightweight and have good formability, reducing the overall weight of the product and achieving lightweight design. The hot gas welding bonding process has excellent sealing performance and, compared to other connection methods, can adapt to more complex chamber structure designs, improving functional integration and ensuring the airtightness of the sealed chamber.

[0029] like Figure 3 As shown, it also includes an air chamber insert ring 6. An annular groove is provided on the inner peripheral wall of the air chamber lower cover 3, and the air chamber insert ring 6 is embedded within the air chamber lower cover 3. The air chamber insert ring 6 enhances the structural strength and assembly adaptability of the air chamber lower cover 3, thereby improving the overall structural stability. In specific applications, the air chamber insert ring 6 can also be integrally molded into the air chamber lower cover 3 using an injection molding process. The integral molding design simplifies the processing and assembly process, reduces production costs, and avoids functional failures caused by loose insert rings, thus improving product reliability.

[0030] Assembly process: First, insert the air chamber sealing ring 5 into the sealing groove of the air chamber upper cover 1. Then, align the cylindrical body 22 of the air chamber insert 2 with the upper cover through hole 10 of the air chamber upper cover 1, while ensuring that the positioning protrusion 12 is aligned with the positioning hole 23 and the positioning pin 24 is aligned with the positioning slot 13. Use a pressure device to press the air chamber insert 2 in until the annular connecting plate 21 is in contact with the top surface of the air chamber upper cover 1. At this time, the connecting rib 4 undergoes elastic deformation and provides a fastening force, and the positioning structure is also fully engaged. Finally, connect the air chamber upper cover 1 and the air chamber lower cover 3 together, and weld them together using a hot gas welding process to form a complete air spring structure.

[0031] In summary, the advantages of this utility model are: Modular and maintainable: The separate design of the air chamber upper cover 1, air chamber insert 2 and air chamber lower cover 3 breaks the limitations of the traditional one-piece molded structure, allowing vulnerable parts such as top rubber bushing, buffer block and sealing ring to be replaced individually and conveniently, which greatly improves the convenience and economy of maintenance, and can flexibly adapt to the needs of different vehicle models.

[0032] Reliable connection: By setting circumferentially distributed interference connecting ribs 4 on the inner peripheral wall of the through hole 10 of the upper cover, and forming an interference fit with the air chamber insert 2, a firm axial fixation between the two is achieved, effectively preventing them from falling off.

[0033] Precise positioning and reliable anti-rotation: The dual positioning structure of positioning protrusion 12 and positioning hole 23, positioning pin 24 and positioning slot 13 precisely restricts the circumferential rotation between air chamber insert 2 and air chamber cover 1, ensuring the stability of the component under complex working conditions.

[0034] Excellent sealing performance: Based on the mechanical interference fit, an independent air chamber sealing ring 5 is added, which is combined with the seal formed by hot gas welding process to form multiple sealing protections, effectively preventing gas leakage from the sealed air chamber.

[0035] Lightweighting and Performance Enhancement: The upper cover 1 and lower cover 3 of the air chamber are made of plastic and combined with lightweight aluminum alloy air chamber inserts 2, significantly reducing the weight of the entire component. At the same time, the plastic parts, combined with hot gas welding technology, allow for the design of more complex air chamber structures with higher functional integration, improving product performance and design freedom.

[0036] In the description of the embodiments of this application, it should be noted that the terms "inner" and "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0037] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0038] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An air spring structure, characterized in that, The system includes a coaxially arranged upper cover (1), an air chamber insert (2), and a lower cover (3); the upper cover (1) has an axially extending through hole (10) in the middle, and the inner wall of the through hole (10) is provided with a plurality of radially protruding connecting ribs (4) spaced circumferentially; the air chamber insert (2) is embedded in the through hole (10), and the outer peripheral wall of the air chamber insert (2) is press-fitted with the connecting ribs (4) to achieve a tight connection between the upper cover (1) and the air chamber insert (2); the upper cover (1) is located on the through hole (10) and is positioned on the upper cover (10). 10) has an upper annular cavity (11) on its outer periphery; the lower cover (3) of the air chamber is fixedly connected to the lower part of the upper cover (1) of the air chamber, and the middle part of the lower cover (3) has a lower cover through hole (30) through it along the axial direction; the lower cover (3) of the air chamber has a lower annular cavity (31) on its upper part and located on the outer periphery of the lower cover through hole (30), and the upper annular cavity (11) and the lower annular cavity (31) enclose to form a sealed chamber, and the middle part of the air chamber insert (2) has an insert through hole (20) through it along the axial direction; the insert through hole (20) is connected to the lower cover through hole (30).

2. The air spring structure according to claim 1, characterized in that, Each of the connecting ribs (4) is integrally formed on the inner wall of the through hole (10) of the upper cover, and a guide slope (41) is provided on the upper part of the connecting rib (4); and the guide slope (41) is inclined from the outside to the inside from the top to the bottom.

3. The air spring structure according to claim 1 or 2, characterized in that, The number of connecting ribs (4) is twelve, and they are evenly distributed along the circumference of the through hole (10) of the upper cover.

4. The air spring structure according to claim 1, characterized in that, An air chamber sealing ring (5) is also provided between the outer peripheral wall of the air chamber insert (2) and the inner peripheral wall of the air chamber cover (1).

5. The air spring structure according to claim 4, characterized in that, The outer peripheral wall of the air chamber insert (2) is provided with an inwardly recessed first annular step; the inner peripheral wall of the air chamber cover (1) is provided with an outwardly recessed second annular step, the first annular step and the second annular step together form an annular limiting cavity (50); the outer peripheral wall of the air chamber sealing ring (5) abuts against the outer peripheral of the annular limiting cavity (50), and the inner peripheral wall of the air chamber sealing ring (5) abuts against the inner peripheral of the annular limiting cavity (50).

6. The air spring structure according to claim 1, characterized in that, The air chamber insert (2) includes an integrally formed annular connecting disc (21) and a cylindrical body (22); the annular connecting disc (21) is fixedly attached to the top surface of the air chamber cover (1), and the cylindrical body (22) is coaxially embedded in the through hole (10) of the cover, and the outer peripheral wall of the cylindrical body (22) is tightly fitted with the connecting rib (4).

7. The air spring structure according to claim 6, characterized in that, The annular connecting plate (21) is provided with a positioning hole (23); the top surface of the air chamber cover (1) is provided with a positioning protrusion (12) that cooperates with the positioning hole (23), and the positioning protrusion (12) is inserted into the positioning hole (23) to achieve positioning.

8. The air spring structure according to claim 6, characterized in that, The bottom surface of the annular connecting plate (21) is provided with a positioning pin (24), and the top surface of the air chamber cover (1) is provided with a positioning slot (13) that cooperates with the positioning pin (24). The positioning pin (24) is inserted into the positioning slot (13) to achieve positioning.

9. The air spring structure according to claim 1, characterized in that, The air chamber insert (2) is made of aluminum alloy; the upper cover (1) and lower cover (3) of the air chamber are both made of plastic, and the upper cover (1) and lower cover (3) of the air chamber are bonded together by hot gas welding to form a sealed connection.

10. The air spring structure according to claim 1, characterized in that, It also includes an air chamber insert ring (6), and an annular groove is provided on the inner peripheral wall of the air chamber lower cover (3), and the air chamber insert ring (6) is embedded in the air chamber lower cover (3).

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