Shock absorber bidirectional sealing structure, shock absorber and vehicle
By employing a bidirectional sealing structure that combines axial and radial sealing in the shock absorber, the problem of easy failure of unidirectional sealing is solved, resulting in better sealing performance and longer service life, thus improving the driving comfort of the vehicle.
Patent Information
- Application Number
- CN202520111238.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2035-01-17
AI Technical Summary
The one-way sealing structure of existing traditional shock absorbers is prone to failure in harsh environments, resulting in reduced sealing performance and insufficient service life, which affects vehicle comfort.
It adopts a bidirectional sealing structure that combines axial and radial sealing. The first, second and third sealing lips cooperate with the piston rod, guide and liquid reservoir respectively to form multiple seals, ensuring the sealing effect of the oil seal and the oil pressure balance.
It improves the sealing performance and service life of the shock absorber, ensuring a long-lasting sealing effect and enhancing the driving comfort of the car.
Smart Images
Figure CN223563362U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to shock absorber technical field especially a shock absorber bidirectional sealing structure and shock absorber and vehicle. BACKGROUND
[0002] The existing traditional shock absorber oil seal is one-way sealing, in the environment that the use requirement of shock absorber is more strict, and after long time use, the sealing requirement of oil seal is not only that the oil in the sealed cavity does not leak, but also that the outside pollution cannot enter the inside of the sealed cavity. The one-way oil seal performance decline or service life shortage will lead to shock absorber failure, affect the driving and the comfort of the driver and passenger, and the present application is proposed for the above defects. SUMMARY
[0003] The utility model discloses a shock absorber bidirectional sealing structure and shock absorber and vehicle, and the oil seal of bidirectional sealing is designed in axial radial, improves the sealing performance of shock absorber, improves the service life, and solves the problem of low reliability of traditional one-way sealing.
[0004] To solve the above problems, the utility model provides a shock absorber bidirectional sealing structure, including oil seal, guider, piston rod and liquid storage cylinder, the oil seal includes first sealing lip, second sealing lip and third sealing lip, the first sealing lip cooperates and seals with piston rod, forms axial sealing, the second sealing lip cooperates and seals with guider and liquid storage cylinder, and is located at the outer wall position of guider, forms multiple radial sealing, the third sealing lip contacts and seals with guider inner hole wall, and multiple sealing lips are combined sealing at the axial radial of shock absorber, guarantee the sealing effect, and make the oil pressure balance in the inside of shock absorber to reach more excellent, more lasting sealing performance.
[0005] According to the utility model one embodiment, the second sealing lip cooperates and seals with the inner wall and end wall of liquid storage cylinder, forms multiple and larger area sealing structure.
[0006] According to the utility model one embodiment, the first sealing lip, second sealing lip and third sealing lip are integrally formed, and convenient to install and maintain.
[0007] According to the utility model one embodiment, the first sealing lip, second sealing lip and third sealing lip are independently arranged, and the oil seal is formed by multiple sealing structures.
[0008] According to the utility model one embodiment, the first sealing lip includes several sealing contact parts, and 2 to 4 groups are arranged.
[0009] A shock absorber includes the shock absorber bidirectional sealing structure.
[0010] A vehicle comprising the shock absorber described above.
[0011] The utility model discloses beneficial effect is, through setting up the oil seal that has first sealing lip, second sealing lip and third sealing lip, realized the axial seal that forms at piston rod, the radial seal effect of two -way sealing that forms at guider and liquid storage cylinder, the device simple structure, convenient installation, easy maintenance, long service life, guarantee sealing effect, at the same time, make the oil pressure balance in shock absorber, reach more excellent, more lasting sealing performance, can guarantee the normal of shock absorber each sealed function after the rigorous use environment and long -time use shock absorber. BRIEF DESCRIPTION OF DRAWINGS
[0012] The utility model is further described below in connection with the drawings and examples.
[0013] Figure 1 It is whole structure schematic diagram for shock absorber two -way sealing structure. DETAILED DESCRIPTION
[0014] The following description is only for disclosing the utility model to enable those skilled in the art to implement the utility model. The examples in the following description are only as examples, and those skilled in the art can think of other obvious modifications. The basic principles of the utility model defined in the following description can be applied to other implementation, modification, improvement, equivalent and other schemes without departing from the spirit and scope of the utility model.
[0015] A shock absorber two -way sealing structure, as Figure 1 Including oil seal 1, guider 2, piston rod 7 and liquid storage cylinder 8.
[0016] First sealing lip 4, second sealing lip 5 and third sealing lip 6 are arranged on oil seal 1, and the sealing lip structure of oil seal 1 is whole circle type structure, which is convenient to install and maintain.
[0017] The first sealing lip 4 is tightly attached to the piston rod 7 to form an axial seal, and preferably the first sealing lip 4 includes a plurality of sealing contact portions, such as three groups, which are arranged on the upper and lower sides of the main surface of the oil seal 1, forming multiple seals in the axial direction of the piston rod 7, and ensuring the sealing effect in the axial direction.
[0018] The second sealing lip 5 is press-fitted and sealed with the guider 2 and the liquid storage cylinder 8, and the second sealing lip 5 completely fills the gap between the guider 2 and the liquid storage cylinder 8, forming a radial seal. The sealing effect is ensured by radial contact sealing through press-fitting. The second sealing lip is located at the outer wall position of the guider 2, and the contact area of the oil seal 1 with the liquid storage cylinder 8 is increased in the radial direction. After sealing, the sealing lip of the oil seal 1 in the radial direction is more tightly contacted to achieve better axial sealing effect.
[0019] The third sealing lip 6 is in contact with the inner hole wall of the guide 2 to seal, and the third sealing lip 6 and the second sealing lip 5 are respectively located on the inner and outer sides of the guide 2.
[0020] The multiple sets of sealing lips are combined to seal at the axial and radial positions of the shock absorber, a sealing cavity 3 is formed between the liquid storage cylinder and the inner cylinder and in the inner cylinder, the sealing effect is ensured, the oil pressure in the shock absorber is balanced, and more excellent and more durable sealing performance is achieved.
[0021] A shock absorber comprises the bidirectional sealing structure of the shock absorber.
[0022] A vehicle comprises the shock absorber.
[0023] It should be understood by those skilled in the art that the above description and the embodiments of the utility model shown in the drawings are only as examples and do not limit the utility model. The purpose of the utility model has been completely and effectively achieved. The function and structural principle of the utility model have been shown and explained in the embodiments, and the embodiments of the utility model can have any deformation and modification without departing from the principle.
Claims
1. A bidirectional seal for a shock absorber, comprising: The shock absorber bidirectional sealing structure comprises an oil seal (1), a guide (2), a piston rod (7) and a liquid storage cylinder (8), the oil seal (1) comprises a first sealing lip (4), a second sealing lip (5) and a third sealing lip (6), the first sealing lip (4) is matched with the piston rod (7) to form an axial seal, the second sealing lip (5) is matched with the guide (2) and the liquid storage cylinder (8) to form a radial seal, and the third sealing lip (6) is matched with the inner hole wall of the guide (2).
2. The bidirectional seal structure of a shock absorber according to claim 1, characterized by: The second sealing lip (5) is matched with the inner wall and the end wall of the liquid storage cylinder (8).
3. The bidirectional seal structure of a shock absorber according to claim 1, characterized by: The first sealing lip (4), the second sealing lip (5) and the third sealing lip (6) are integrally formed.
4. The bidirectional seal structure of a shock absorber according to claim 1, characterized by: The first sealing lip (4), the second sealing lip (5) and the third sealing lip (6) are independently arranged.
5. The bidirectional seal structure of a shock absorber according to any one of claims 1 to 4, characterized in that: The first sealing lip (4) comprises a plurality of sealing contact parts.
6. A shock absorber characterized by: The shock absorber bidirectional sealing structure comprises any one of claims 1-5.
7. A vehicle characterized by: The shock absorber comprises claim 6.