Automobile air spring with split seal cover structure
Patent Information
- Application Number
- CN202522731108.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-24
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-12-24
AI Technical Summary
[0002]密封盖是汽车前悬空气弹簧的一个重要组件，其起到密封空气弹簧的气室，并维持内部气压稳定的作用，以确保空气弹簧的性能；目前市面上的空气弹簧所采用的密封盖均为由铝合金材料制成的一体式的密封盖，其虽然具有稳定性高的优点，但也存在质量较重，成本高，以及加工工序复杂的缺点
[0005]本实用新型通过采用上述结构后，在卡簧以及金属环的作用下，能够可靠地将密封盖本体压紧在气室上盖的内腔中，以保证空气弹簧优良的性能，且在本实用新型保证空气弹簧具有优良性能的前提下，由于密封盖本体由塑料材料一体注塑成型，从而具有密封盖本体质量轻、成本低以及生产制造方便的优点，进而能够降低空气弹簧的整体重量、生产成本以及简化空气弹簧的生产工序。
Smart Images
Figure CN224919686U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive air spring technology, and more specifically, to an automotive air spring with a split-type sealing cover structure. Background Technology
[0002] The sealing cover is an important component of the front suspension air spring of a car. It seals the air chamber of the air spring and maintains stable internal air pressure to ensure the performance of the air spring. Currently, the sealing covers used in air springs on the market are all one-piece sealing covers made of aluminum alloy. Although they have the advantage of high stability, they also have the disadvantages of being heavy, costly, and having a complex manufacturing process. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide an automotive air spring with a split sealing cover structure. While ensuring the air spring has excellent performance, the sealing cover body is integrally injection molded from plastic material, thus having the advantages of light weight, low cost and convenient manufacturing.
[0004] This utility model provides an automotive air spring with a split sealing cover structure, including an air chamber cover and a sealing cover assembly. The upper part of the air chamber cover has a recessed mounting cavity in the middle. The sealing cover assembly includes a sealing cover body and a metal ring. The sealing cover body is integrally injection molded from plastic material. An annular step is provided on the outer peripheral wall of the sealing cover body. The metal ring is sleeved on the outside of the sealing cover body, and the inner edge of the metal ring abuts against the annular step. The lower end of the sealing cover body is inserted into the mounting cavity and abuts against the annular constriction on the inner wall of the mounting cavity. A sealing ring is embedded between the sealing cover body and the mounting cavity. A retaining spring is clamped on the inner wall of the upper end of the mounting cavity. The upper end face of the outer edge of the metal ring abuts against the lower end face of the inner edge of the retaining spring.
[0005] By adopting the above-mentioned structure, this utility model can reliably press the sealing cover body into the inner cavity of the air chamber cover under the action of the snap ring and the metal ring, so as to ensure the excellent performance of the air spring. Furthermore, under the premise of ensuring the excellent performance of the air spring, since the sealing cover body is integrally injection molded from plastic material, it has the advantages of light weight, low cost and convenient manufacturing, thereby reducing the overall weight and production cost of the air spring and simplifying the production process of the air spring.
[0006] In one possible implementation, the inner peripheral wall of the metal ring is fitted with the side wall of the annular step, and the outer peripheral wall of the metal ring is fitted with the inner peripheral wall of the mounting cavity. By adopting this structure, since the inner peripheral wall of the metal ring is fitted with the side wall of the annular step, and the outer peripheral wall of the metal ring is fitted with the inner peripheral wall of the mounting cavity, the sealing cover body can be horizontally limited by the metal ring and the air chamber cover. This avoids horizontal displacement of the sealing cover body relative to the air chamber cover, thus improving the reliability of the sealing cover body and the air chamber cover after assembly.
[0007] In one possible implementation, an annular chamfered surface is provided at the lower edge of the inner peripheral wall of the metal ring. The annular chamfered surface is used to guide and cooperate with the outer wall of the sealing cap body so that the metal ring can be sleeved onto the outside of the sealing cap body. With this structure, when the metal ring and the sealing cap body are assembled, the annular chamfered surface can cooperate and guide with the outer wall of the sealing cap body so that the metal ring can be sleeved onto the outside of the sealing cap body, which can facilitate the assembly of the metal ring and the sealing cap body.
[0008] In one possible implementation, the metal ring is formed by stamping steel. By using steel to form the metal ring, it has the advantages of high structural strength, good integrity, and convenient production and processing.
[0009] In one possible implementation, the surface of the metal ring is electroplated with a zinc-nickel layer; by electroplating the surface of the metal ring with a zinc-nickel layer, the structural strength of the metal ring can be further improved, and corrosion of the metal ring can be effectively avoided.
[0010] In one possible implementation, an annular groove is provided on the inner wall of the upper end of the mounting cavity, and the outer edge of the retaining spring is engaged in the annular groove; by adopting this structure, the outer edge of the retaining spring can be reliably engaged with the inner wall of the mounting cavity. Attached Figure Description
[0011] Figure 1 This is a cross-sectional structural diagram of the present invention; Figure 2 This is a cross-sectional view of the metal ring and the sealing cap body after assembly. Detailed Implementation
[0012] 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.
[0013] 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.
[0014] 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.
[0015] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0016] See Figures 1-2 As shown in the embodiment of this application, an automotive air spring with a split sealing cover structure is disclosed, including an air chamber cover 1 and a sealing cover assembly. The upper part of the air chamber cover 1 has a recessed mounting cavity 11. The sealing cover assembly includes a sealing cover body 2 and a metal ring 3. The sealing cover body 2 is integrally injection molded from plastic material. An annular step 21 is provided on the outer peripheral wall of the sealing cover body 2. The metal ring 3 is sleeved on the outside of the sealing cover body 2. The inner edge of the metal ring 3 abuts against the annular step 21. The lower end of the sealing cover body 2 is inserted into the mounting cavity 11 and abuts against the annular constriction 12 located on the inner wall of the mounting cavity 11. A sealing ring 4 is embedded between the sealing cover body 2 and the mounting cavity 11. A retaining spring 5 is clamped on the inner wall of the upper end of the mounting cavity 11. The upper end face of the outer edge of the metal ring 3 abuts against the lower end face of the inner edge of the retaining spring 5.
[0017] The inner circumferential wall of the metal ring 3 is fitted with the side wall of the annular step 21, and the outer circumferential wall of the metal ring 3 is fitted with the inner circumferential wall of the mounting cavity 11. With this structure, since the inner circumferential wall of the metal ring 3 is fitted with the side wall of the annular step 21 and the outer circumferential wall of the metal ring 3 is fitted with the inner circumferential wall of the mounting cavity 11, the sealing cover body 2 can achieve horizontal positioning with the air chamber cover 1 through the metal ring 3. This avoids horizontal displacement of the sealing cover body 2 relative to the air chamber cover 1, and improves the reliability of the sealing cover body 2 and the air chamber cover 1 after assembly.
[0018] An annular chamfered surface 31 is provided at the lower edge of the inner peripheral wall of the metal ring 3. The annular chamfered surface 31 is used to cooperate with and guide the outer side wall of the sealing cap body 2 so that the metal ring 3 can be sleeved onto the outside of the sealing cap body 2. With this structure, when the metal ring 3 is assembled with the sealing cap body 2, the annular chamfered surface 31 can cooperate with and guide the outer side wall of the sealing cap body 2 so that the metal ring 3 can be sleeved onto the outside of the sealing cap body 2, which can facilitate the assembly of the metal ring 3 and the sealing cap body 2.
[0019] The metal ring 3 is formed by stamping steel. The metal ring 3 obtained by stamping steel has the advantages of high structural strength, good integrity, and convenient production and processing.
[0020] The surface of the metal ring 3 is electroplated with a zinc-nickel layer; by electroplating the surface of the metal ring 3 with a zinc-nickel layer, the structural strength of the metal ring 3 can be further improved, and the corrosion of the metal ring 3 can be effectively avoided.
[0021] An annular groove 13 is provided on the inner wall of the upper end of the mounting cavity 11, and the outer edge of the retaining spring 5 is engaged in the annular groove 13. By adopting this structure, the outer edge of the retaining spring 5 can be reliably engaged with the inner wall of the mounting cavity 11.
[0022] In the assembly of this utility model, firstly, the sealing ring 4 is clamped onto the outer peripheral wall of the sealing cover body 2. Then, the metal ring 3 is sleeved onto the outer peripheral wall of the sealing cover body 2, so that the sealing cover body 2 abuts against the annular step 21. Then, the lower end of the sealing cover body 2 is inserted into the mounting cavity 11 on the air chamber cover 1, so that the lower end of the sealing cover body 2 abuts against the annular constriction 12. At this time, the sealing cover body 2 can be circumferentially sealed with the inner wall of the mounting cavity 11 by the sealing ring 4. Finally, the retaining spring 5 is clamped onto the inner wall of the mounting cavity 11. At this time, the upper end face of the outer edge of the metal ring 3 can be tightly abutted against the lower end face of the inner edge of the retaining spring 5, thereby achieving the pressing of the sealing cover body 2, that is, achieving the axial limitation of the sealing cover body 2 and the air chamber cover 1.
[0023] 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 automotive air spring with a split-type sealing cover structure, comprising an air chamber cover (1) and a sealing cover assembly, wherein a recessed mounting cavity (11) is provided in the middle of the upper end of the air chamber cover (1); characterized in that: The sealing cap assembly includes a sealing cap body (2) and a metal ring (3); the sealing cap body (2) is integrally injection molded from plastic material, and an annular step (21) is provided on the outer peripheral wall of the sealing cap body (2). The metal ring (3) is sleeved on the outside of the sealing cap body (2), and the inner edge of the metal ring (3) abuts against the annular step (21). The lower end of the sealing cap body (2) is inserted into the mounting cavity (11) and abuts against the annular constriction (12) located on the inner wall of the mounting cavity (11). A sealing ring (4) is embedded between the sealing cap body (2) and the mounting cavity (11). A retaining spring (5) is clamped on the inner wall of the upper end of the mounting cavity (11). The upper end face of the outer edge of the metal ring (3) abuts against the lower end face of the inner edge of the retaining spring (5).
2. The automotive air spring with a split-type sealing cover structure according to claim 1, characterized in that: The inner peripheral wall of the metal ring (3) is in contact with the side wall of the annular step (21), and the outer peripheral wall of the metal ring (3) is in contact with the inner peripheral wall of the mounting cavity (11).
3. The automotive air spring with a split-type sealing cover structure according to claim 2, characterized in that: The lower edge of the inner peripheral wall of the metal ring (3) is provided with an annular chamfered surface (31), which is used to cooperate with the outer side wall of the sealing cap body (2) for guidance so that the metal ring (3) can be sleeved onto the outside of the sealing cap body (2).
4. The automotive air spring with a split-type sealing cover structure according to any one of claims 1-3, characterized in that: The metal ring (3) is formed by stamping steel.
5. The automotive air spring with a split-type sealing cover structure according to claim 4, characterized in that: The surface of the metal ring (3) is electroplated with a zinc-nickel layer.
6. The automotive air spring with a split-type sealing cover structure according to any one of claims 1-3 or 5, characterized in that: An annular groove (13) is provided on the inner wall of the upper end of the mounting cavity (11), and the outer edge of the retaining spring (5) is engaged in the annular groove (13).