减振器总成、活塞结构和车辆

Abstract

本申请提供了一种减振器总成、活塞结构和车辆，涉及空气弹簧技术领域，减振器总成用于车辆减振，能够减小减振器总成的噪音，减振器总成包括减振器、活塞结构、气囊和副气室。其中，活塞结构套设于减振器的缸体，活塞结构与缸体之间形成有通气通道，活塞结构的内侧壁形成有凸起，凸起位于通气通道内，凸起的端面与缸体的外侧壁连接，气囊轴向套设于活塞结构，与通气通道连通，副气室与通气通道可通断地连通。

Claims

1. A shock absorber assembly characterized by, include: Vibration damper (1); A piston structure (2) is fitted onto the cylinder (12) of the damper (1). A ventilation channel (3) is formed between the piston structure (2) and the cylinder (12). A protrusion (212) is formed on the inner sidewall of the piston structure (2). The protrusion (212) is located in the ventilation channel (3). The end face of the protrusion (212) is connected to the outer sidewall of the cylinder (12). An airbag (4) is axially sleeved on the piston structure (2) and communicates with the ventilation channel; The auxiliary air chamber (5) is in a switchable connection with the ventilation channel (3).

2. The shock absorber assembly of claim 1, wherein, The ventilation channel (3) faces the output end of the damper (1). The ventilation channel (3) has an opening. The auxiliary air chamber (5) is connected to the ventilation channel (3) through the opening. Along the axial direction of the damper (1), at least a portion of the protrusion (212) and the airbag (4) are located on the side of the opening (211) near the output end of the damper (1).

3. The shock absorber assembly of claim 1, wherein, The number of protrusions (212) is at least two, and at least two protrusions (212) are arranged circumferentially along the damper (1), with an air gap formed between two adjacent protrusions (212).

4. The shock absorber assembly of claim 1, wherein, The inner wall of the piston structure (2) is connected to the outer wall of the cylinder (12), sealing the end of the ventilation channel (3) away from the output end of the damper (1), and at least a portion of the protrusion (212) is located at the end of the ventilation channel (3) near the output end of the damper (1).

5. The shock absorber assembly of claim 1, wherein, The piston structure (2) includes: The inner cylinder (21) is fitted onto the cylinder body (12), and the inner side wall of the inner cylinder (21) and the outer side wall of the cylinder body (12) together form the ventilation channel (3). The outer cylinder (22) is sleeved on the outer cylinder (22), and the inner sidewall of the outer cylinder (22) and the inner sidewall of the inner cylinder (21) together form the auxiliary air chamber (5).

6. The shock absorber assembly of any one of claims 1-5, wherein, The outer wall of the piston structure (2) forms at least two protruding teeth (221), and the airbag (4) is sleeved on the protruding teeth (221). At least two of the protruding teeth (221) are arranged along the axial direction of the damper (1). The surfaces of two adjacent protruding teeth (221) that are close to each other are all away from the central axis of the damper (1). The included angle between the surfaces of two adjacent protruding teeth (221) that are close to each other is 50 degrees to 90 degrees.

7. The shock absorber assembly of claim 6, wherein, The ratio of the height of the protrusion (221) to the wall thickness of the airbag (4) is 1 / 3 to 1 / 4.

8. The shock absorber assembly of any one of claims 1-5, wherein, The outer wall of the piston structure (2) is provided with a support (223), and the number of the support (223) is at least two. The at least two support (223) are arranged circumferentially along the damper (1) and axially along the damper (1). The airbag (4) is disposed on the side of the support (223) near the output end of the damper (1). The shock absorber assembly also includes a dust cover (8), which is fitted over the airbag (4) and the piston structure (2), and the dust cover (8) abuts against the surface of each support (223) on the side near the airbag (4).

9. A piston structure for a shock absorber assembly, characterized by, The cylinder (12) is configured to be fitted onto the damper (1). A ventilation channel (3) is formed between the piston structure (2) and the cylinder (12). A protrusion (212) is formed on the inner sidewall of the piston structure (2). The protrusion (212) is located in the ventilation channel (3). The end face of the protrusion (212) is configured to connect with the outer sidewall of the cylinder (12).

10. A vehicle characterized by comprising: Includes the shock absorber assembly as described in claim 9.

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