Air spring assembly structure

Abstract

The utility model is suitable for the technical field of piston sealing, and provides an air spring assembly structure which comprises a shock absorber, a piston base, a piston patch and a sealing ring which are sequentially arranged on the shock absorber in a sleeved mode, and a piston arranged on the shock absorber in a sleeved mode, and the piston patch and the sealing ring are arranged between the shock absorber and the piston. The piston abuts against the upper surface of the piston base. The piston comprises a piston main body, and a positioning block is mounted below the piston main body; the piston base comprises a fixed disc, and a positioning hole is formed in the fixed disc; the device solves the problems that a welding piston base is heavy and high in cost, and two sealing ring structures are redundant in sealing and high in cost; the problem that the damper is difficult to assemble due to the fact that the piston base made of iron is easy to extrude a sealing ring when being assembled is solved, and the effects that the sealing performance of the piston and the assembling efficiency can be improved, a traditional welding groove is abandoned, and the manufacturing cost is reduced are achieved.

Description

Technical Field

[0001] This utility model relates to the field of piston sealing technology, and more specifically, to an air spring assembly structure. Background Technology

[0002] Air springs, as a highly efficient elastic device based on the principle of air pressure, are gradually replacing traditional mechanical springs as a core shock-absorbing component in high-end equipment. Essentially, they achieve flexible support and energy dissipation under dynamic loads through the interaction of precisely woven rubber air bladders and high-pressure gas. Compared to traditional rigid coil springs, air springs offer advantages such as lighter weight, variable stiffness, and adjustable height, significantly improving the comfort of passengers.

[0003] Currently, air springs are generally made by first sealing one end of the top cover to the air bladder with a clamping device, and then sealing the other end of the piston to the air bladder with a clamping device. During the operation of the air spring, the sealing device directly affects the performance and service life of the air spring, and also affects the service life and stability of other components of the entire air suspension system.

[0004] However, the commonly used air spring piston sealing structure typically involves welding an iron piston base directly onto the shock absorber, with two grooves cut in the middle to accommodate two sealing rings. The sealing rings are then directly compressed through the gap between the piston and the piston base for sealing. This structure, due to the welded piston base, is not only very heavy and costly, but also prone to air leakage at the welded area, and there is no effective method for detecting leaks. The two-ring sealing structure is redundant and contributes to the high cost. Furthermore, the iron piston base can cause difficulties in shock absorber assembly during the sealing ring compression process.

[0005] Therefore, this application proposes an air spring assembly structure. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an air spring assembly structure.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] An air spring assembly structure is characterized by comprising a shock absorber, a piston base, a piston patch and a sealing ring sequentially sleeved on the shock absorber, and a piston sleeved on the shock absorber, wherein the piston patch and the sealing ring are disposed between the shock absorber and the piston.

[0009] The present invention is further configured such that the piston abuts against the upper surface of the piston base.

[0010] The present invention is further configured such that: the piston includes a piston body, and a positioning block is installed below the piston body.

[0011] The present invention is further configured such that: the piston base includes a fixed plate, and the fixed plate has a positioning hole.

[0012] The present invention is further configured such that the lower surface of the sealing ring abuts against the upper surface of the piston patch.

[0013] The present invention is further configured such that a dust cover is fitted on the outer side of the piston.

[0014] The present invention is further configured such that the bottom of the dust cover abuts against the upper surface of the piston base.

[0015] The present invention is further configured such that the positioning block is engaged with the positioning hole.

[0016] The present invention is further configured such that: the piston patch includes a patch body, and the inner ring of the patch body is provided with reinforcing ribs.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] By attaching the piston patch to the piston base and the sealing ring to the top of the piston patch, the piston moves along the damper and adheres to the piston patch and piston base. During the piston's movement, the sealing ring is compressed, which improves the piston's sealing performance. Furthermore, during the sealing process, the mechanical compression of the sealing ring during the piston's movement improves assembly efficiency and eliminates the need for traditional welding grooves, reducing manufacturing costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of an air spring assembly according to the present invention.

[0020] Figure 2 for Figure 1 Schematic diagram of the middle section of the explosion structure.

[0021] Figure 3 This is a schematic diagram of the partial explosion structure in section 2.

[0022] Figure 4 for Figure 1 Top view.

[0023] Figure 5 for Figure 4 A cross-sectional view along the AA direction.

[0024] Figure 6 for Figure 5 A magnified structural diagram of area B in the middle.

[0025] Explanation of reference numerals in the attached diagram: 1. Shock absorber; 2. Dust cover; 3. Piston; 31. Piston body; 32. Positioning block; 4. Piston base; 41. Fixing plate; 42. Positioning hole; 5. Piston patch; 51. Patch body; 52. Reinforcing rib; 6. Sealing ring Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] Please see Figure 1-6 The present invention provides the following technical solution:

[0030] See Figures 1 to 3 An air spring assembly structure includes a shock absorber 1, a piston base 4 mounted on the outer wall of the shock absorber 1, a piston patch 5 disposed on the piston base 4, a sealing ring 6 disposed on the piston patch 5, and a piston 3 sleeved on the outer side of the piston patch 5 and the sealing ring 6.

[0031] The piston 3 abuts against the upper surface of the piston base 4. The piston patch 5 is fitted onto the outer wall of the shock absorber 1. The sealing ring 6 is fitted onto the outer wall of the shock absorber 1. The lower surface of the sealing ring 6 abuts against the upper surface of the piston patch 5. A dust cover 2 is fitted onto the outer side of the piston 3. The bottom of the dust cover 2 abuts against the upper surface of the piston base 4. The shape of the dust cover 2 fits the piston 3. The inner wall of the piston 3 fits against the outer wall of the piston patch 5. The piston base 4 is welded to the outer wall of the shock absorber 1.

[0032] The outer diameter of the sealing ring 6 is larger than the outer diameter of the piston patch 5, the bottom outer diameter of the piston 3 is smaller than the outer diameter of the piston base 4, the top of the piston 3 is threaded, the interior of the dust cover 2 is not hollow, the dust cover 2 is installed on the piston base 4 in conjunction with the piston 3, and the sealing ring 6 is used to seal between the piston base 4 and the piston 3.

[0033] The piston 3 includes a piston body 31, and a positioning block 32 is installed below the piston body 31. The piston base 4 includes a fixing plate 41, and a positioning hole 42 is provided on the fixing plate 41. The piston patch 5 includes a patch body 51, and a reinforcing rib 52 is provided on the inner ring of the patch body 51.

[0034] The positioning block 32 engages with the positioning hole 42, fixing the position of the piston body 31. The shape of the reinforcing rib 52 reduces weight and cost, and the positioning block 32 prevents the piston 3 from rotating.

[0035] The piston base 4 and piston patch 5 adopt a split assembly structure. The piston patch 5 is made of injection molding material, which reduces weight and lowers cost.

[0036] See Figures 4 to 6 The piston base 4 is welded to the shock absorber 1. The piston patch 2 moves downward from the outer wall of the shock absorber 1 to fit against the piston base 4. The sealing ring 6 moves downward from the outer wall of the shock absorber 1 to the top of the piston patch 5. The piston 3 is placed on the piston base 4 along the shock absorber 1 and against the piston patch 2. When the piston 3 fits against the piston base 4, the stroke of the sealing ring 6 compresses the sealing ring 6, causing the inner wall of the sealing ring 6 to fit against the shock absorber 1 and the outer wall of the sealing ring 6 to fit against the inner wall of the piston 3, achieving the effect of assembly sealing.

[0037] The piston patch 2 is attached to the piston base 4, and the sealing ring 6 is attached to the top of the piston patch 5. The piston 3 is attached to the piston base 4 along the damper 1 and attached to the piston patch 2. During the movement of the piston 3, the sealing ring 6 is squeezed, which can improve the piston sealing performance. In addition, during the sealing process, the mechanical squeezing of the sealing ring 6 during the movement of the piston 3 can improve the assembly efficiency and eliminate the need for traditional welding grooves, thus reducing manufacturing costs.

[0038] Using a sealing ring 6 for sealing not only reduces weight and cost, but also optimizes the assembly structure and reduces the complexity of the assembly process; at the same time, the welding of the vibration damper is outside the sealing structure of the sealing ring 6, so there is no risk of welding leakage.

[0039] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

Claims

1. An air spring assembly structure, characterized in that: It includes a shock absorber (1), a piston base (4), a piston patch (5) and a sealing ring (6) sequentially fitted on the shock absorber (1), and a piston (3) fitted on the shock absorber (1), wherein the piston patch (5) and the sealing ring (6) are disposed between the shock absorber (1) and the piston (3).

2. The air spring assembly structure according to claim 1, characterized in that: The piston (3) abuts against the upper surface of the piston base (4).

3. The air spring assembly structure according to claim 2, characterized in that: The piston (3) includes a piston body (31), and a positioning block (32) is installed below the piston body (31).

4. The air spring assembly structure according to claim 3, characterized in that: The piston base (4) includes a fixed plate (41), and the fixed plate (41) has a positioning hole (42).

5. The air spring assembly structure according to claim 1, characterized in that: The lower surface of the sealing ring (6) abuts against the upper surface of the piston patch (5).

6. The air spring assembly structure according to claim 5, characterized in that: The piston (3) is fitted with a dust cover (2) on its outer side.

7. The air spring assembly structure according to claim 6, characterized in that: The bottom of the dust cover (2) abuts against the upper surface of the piston base (4).

8. The air spring assembly structure according to claim 4, characterized in that: The positioning block (32) engages with the positioning hole (42).

9. The air spring assembly structure according to claim 1, characterized in that: The piston patch (5) includes a patch body (51), and the inner ring of the patch body (51) is provided with reinforcing ribs (52).

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