High-preloading-force shock absorber gasket

Abstract

The high-preloading-force shock absorber gasket comprises a gasket body, the gasket body abuts against a piston of a shock absorber through an elastic valve plate, a gasket installation hole used for a valve rod to penetrate through is formed in the center of the gasket body, and an annular ridge portion protruding towards the valve plate is arranged on the end face, facing the valve plate, of the gasket body around the axis of the hole. During installation, the protruding end of the annular ridge portion abuts against the upper surface of the valve block, the lower surface of the valve block abuts against a piston of the shock absorber, and axial locking force is applied to the other end face, so that the protruding end of the annular ridge portion extends into the abutting face of the lower surface of the valve block and the piston of the shock absorber. And the valve plate deforms at the abutting part of the valve plate and the annular ridge part and applies a pre-tightening force to the piston. According to the high-preloading-force shock absorber gasket, the problems that an existing shock absorber gasket structure is low in preloading force and cannot meet the preloading force needed by installation are solved through the compact structure.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a high preload force shock absorber gasket. Background Art

[0002] Automobile shock absorbers are an important part of the automobile suspension system. Their main function is to absorb and reduce vibrations and impacts caused by uneven roads, bumps or other external factors during driving, thereby improving driving comfort and vehicle stability. Support washers are key components in automobile shock absorber systems. Some existing shock absorber washers use elastic elements such as springs to offset the piston of the shock absorber through valve plates to generate preload force. However, elastic elements such as springs are unstable and prone to failure during use, and the total axial length will be increased for spring installation. If elastic elements such as springs are not used, the preload force will be insufficient and the valve plate will not be able to close the piston of the shock absorber. Therefore, a shock absorber washer with a stable and compact structure and high preload force is needed. Summary of the invention

[0003] The problem to be solved by the utility model is to provide a high preload force shock absorber washer, which solves the problem that the existing shock absorber washer structure has low preload force and cannot meet the preload force required for installation through a compact structure.

[0004] The technical solution adopted by the utility model to solve the above-mentioned problem is: a high preload shock absorber gasket includes a gasket body, and the gasket body is abutted against the piston of the shock absorber through an elastic valve plate, and the gasket body is provided with a gasket mounting hole for the valve stem to pass through at the center, and an annular ridge protruding toward the valve plate is provided around the axis of the hole on the end face facing the valve plate; when installing, the raised end of the annular ridge abuts against the upper surface of the valve plate, and the lower surface of the valve plate abuts against the piston of the shock absorber, and by applying an axial locking force on the other end face, the raised end of the annular ridge extends into the abutting surface between the lower surface of the valve plate and the piston of the shock absorber, and the valve plate is deformed at the abutment with the annular ridge and applies a preload force to the piston.

[0005] Compared with the prior art: a high preload shock absorber gasket has a compact structure, does not require the use of elastic elements such as springs, and reduces installation space. An annular ridge is provided on the end face of the gasket body facing the valve plate, and the raised end of the annular ridge is abutted against the upper surface of the valve plate during installation. This design enables the gasket to effectively increase the preload force during installation. Specifically, by applying an axial locking force, the raised end of the annular ridge will extend into the contact surface between the lower surface of the valve plate and the shock absorber piston, thereby deforming the valve plate. The elastic characteristics of the valve plate that deforms under force and generates elastic force provide additional preload force for the shock absorber piston.

[0006] Preferably, a first conical surface coaxial with the washer mounting hole and gradually concave toward the edge of the washer mounting hole is provided on the inner side of the annular ridge portion, and a second conical surface coaxial with the washer mounting hole and gradually concave toward the outer edge of the washer body is provided on the outer side of the annular ridge portion. The outermost end in the radial direction of the first conical surface is connected to the innermost end in the radial direction of the second conical surface, and a raised end of the annular ridge portion is formed at the connection.

[0007] Preferably, raised annular ridge portions are provided on both end faces of the washer body, making this part universal and usable on both front and back sides.

[0008] Preferably, open annular oil grooves are provided at the edges of both end faces of the washer body. The innermost end of the bottom plane of the annular oil groove is connected to the outermost end of the second conical surface, all for more stably ensuring communication with the external oil fluid.

[0009] Preferably, the angle between the generatrix of the second conical surface and the installation horizontal plane is greater than the angle between the generatrix of the first conical surface and the installation horizontal plane.

[0010] Preferably, the angle between the generatrix of the first conical surface and the axis of the washer mounting hole is 0.5° to 1.5°.

[0011] Preferably, the angle between the generatrix of the second conical surface and the axis of the washer mounting hole is 25° to 35°. Description of the Drawings

[0012] Figure 1 is a cross-sectional view of the washer body of the present utility model;

[0013] Figure 2 is a cross-sectional view of the present utility model when installed on the piston of a shock absorber;

[0014] Illustration: 1. Washer body; 1.1. Washer mounting hole; 1.2. Annular ridge portion; 1.2.1. First conical surface; 1.2.2. Second conical surface; 1.3. Annular oil groove; 2. Valve plate. Detailed Description of the Invention

[0015] Before describing any embodiments of the present invention in detail, it should be understood that the present invention is not limited in its application to the details of the construction and arrangement of components set forth in the following description or illustrated in the following drawings. The present invention is capable of other embodiments and of being practiced or carried out in various ways. Additionally, it should be understood that the terminology and phrases used herein are for the purpose of description and should not be regarded as limiting. As used herein, the terms "including" or "having" and their variants are intended to cover the listed items and their equivalents as well as additional items. Unless otherwise specified or limited, the terms "mounted," "connected," "supported," and "coupled" and their variants are used broadly and cover both direct and indirect mounting, connection, support, and coupling. Further, "connected" and "coupled" are not limited to physical or mechanical connection or coupling.

[0016] Moreover, on the one hand, in the disclosure of the present invention, the orientation or positional relationships indicated by the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. are based on the orientation or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be construed as limiting the present invention; on the other hand, the term "a" should be understood as "at least one" or "one or more." That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of this element can be multiple. The term "a" should not be construed as limiting the quantity.

[0017] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the drawings are only examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments. Without departing from the said principles, the embodiments of the present invention can have any variations or modifications.

[0018] The following further describes the embodiments of the present invention with reference to the drawings.

[0019] Please refer to Figures 1 to 2, A shock absorber washer with high preloading force includes a washer body 1 with a washer mounting hole 1.1 for the valve stem to pass through in the center, and raised annular ridges 1.2 are respectively provided around the axis of the hole on both end faces. During installation, the raised end of the annular ridge 1.2 on the end face facing the valve plate 2 abuts against the upper surface of the valve plate 2, and the lower surface of the valve plate 2 abuts against the shock absorber piston. By applying an axial locking force on the other end face, the raised end of the annular ridge 1.2 extends into the contact surface between the lower surface of the valve plate 2 and the shock absorber piston, and the valve plate 2 deforms at the contact with the annular ridge 1.2, thereby applying a pre-tightening force to the piston.

[0020] The inner side of the annular ridge 1.2 is provided with a first conical surface 1.2.1 that is coaxial with the washer mounting hole 1.1 and gradually concaves towards the edge of the washer mounting hole 1.1. The angle between the generatrix of the first conical surface 1.2.1 and the axis of the washer mounting hole 1.1 is 0.5° - 1.5°. The outer side of the annular ridge 1.2 is provided with a second conical surface 1.2.2 that is coaxial with the washer mounting hole 1.1 and gradually concaves towards the outer edge of the washer body 1. The angle between the generatrix of the second conical surface 1.2.2 and the axis of the washer mounting hole 1.1 is 25° - 35°. The radially outermost end of the first conical surface 1.2.1 is connected to the radially innermost end of the second conical surface 1.2.2, and the raised end of the annular ridge 1.2 is formed at the connection.

[0021] Open annular oil grooves 1.3 are provided at the edges of both end faces of the washer body 1, and the innermost end of the bottom plane of the annular oil groove 1.3 is connected to the outermost end of the second conical surface 1.2.2.

[0022] The above only illustrates the best embodiments of the present invention, but it should not be construed as a limitation to the claims. The present invention is not limited to the above embodiments, and its specific structure allows changes. All changes made within the protection scope of the independent claims of the present invention are within the protection scope of the present invention.

Claims

1. A shock absorber washer with high preloading force, characterized in that: It includes a washer body (1). The washer body (1) abuts against the piston of the shock absorber through an elastic valve plate (2). The washer body (1) is provided with a washer mounting hole (1.1) for the valve stem to pass through at the center, and a ring-shaped ridge (1.2) protruding towards the valve plate (2) is arranged around the axis of the hole on the end face facing the valve plate (2); during installation, the protruding end of the ring-shaped ridge (1.2) abuts against the upper surface of the valve plate (2), the lower surface of the valve plate (2) abuts against the piston of the shock absorber, and by applying an axial locking force on the other end face, the protruding end of the ring-shaped ridge (1.2) extends into the contact surface between the lower surface of the valve plate (2) and the piston of the shock absorber, and the valve plate (2) deforms at the contact with the ring-shaped ridge (1.2) and applies a pre-tightening force to the piston.

2. A high preloading force shock absorber washer according to claim 1, characterized in that: A first conical surface (1.2.1) coaxial with the washer mounting hole (1.1) and gradually concave towards the edge of the washer mounting hole (1.1) is arranged inside the ring-shaped ridge (1.2), and a second conical surface (1.2.2) coaxial with the washer mounting hole (1.1) and gradually concave towards the outer edge of the washer body (1) is arranged outside the ring-shaped ridge (1.2). The outermost end in the radial direction of the first conical surface (1.2.1) is connected to the innermost end in the radial direction of the second conical surface (1.2.2), and the protruding end of the ring-shaped ridge (1.2) is formed at the connection.

3. A high preload force shock absorber washer according to claim 2, characterized in that: Ring-shaped ridges (1.2) are provided on both end faces of the washer body (1).

4. A high preloading force shock absorber washer according to claim 1, characterized in that: Open-ring-shaped oil grooves (1.3) are provided at the edges of both end faces of the washer body (1). The innermost end of the bottom plane of the ring-shaped oil groove (1.3) is connected to the outermost end of the second conical surface (1.2.2).

5. A high preloading force shock absorber washer according to claim 4, characterized in that: The included angle between the generatrix of the second conical surface (1.2.2) and the installation horizontal plane is greater than the included angle between the generatrix of the first conical surface (1.2.1) and the installation horizontal plane.

6. The high preload force shock absorber washer according to claim 5, wherein: The included angle between the generatrix of the first conical surface (1.2.1) and the axis of the washer mounting hole (1.1) is 0.5° - 1.5°.

7. A high preload damping washer according to claim 6, characterized in that: The included angle between the generatrix of the second conical surface (1.2.2) and the axis of the washer mounting hole (1.1) is 25° - 35°.

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