Novel piston valve system for shock absorber

Abstract

The utility model provides a novel piston valve system for a shock absorber, which comprises a compression valve system and a recovery valve system, and the compression valve system comprises a support gasket and a first valve plate group which are sequentially arranged on a piston rod in the shock absorber; the rebuilt valve system comprises a second valve plate group, a thread gasket and a nut which are sequentially arranged on the piston rod; the surface, making contact with the piston rod, of the threaded gasket is provided with threads, and the threaded gasket is matched with the nut through the threads to be arranged on the piston rod. The threaded washer with the threads and the nuts are locked on the piston valve system of the shock absorber together, the recovery damping force of the piston valve system of the shock absorber is adjusted through the threaded washer, and the valve system is locked, so that a double-nut locking mode is realized; the problem that in the using process of single-nut locking, due to the fact that loads are too large, nuts are loosened is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of piston valves, in particular to a novel piston valve system for a shock absorber. Background Art

[0002] The locking mechanism of the shock absorber piston valve system is locked by a nut. With the development of electric vehicles, the weight of vehicles is getting heavier. During the use of single nut locking, the nut becomes loose due to excessive load, which leads to the failure of the locking mechanism of the shock absorber piston valve system, thus affecting the normal operation of the shock absorber and reducing the effective service life of the shock absorber piston valve system.

[0003] For the above situation, corresponding nut anti-loosening methods are generally adopted to deal with it, such as using self-locking nuts or double nut structures through friction anti-loosening, and installing spring washers in front of the nuts, etc. However, these measures are still easy to loosen under impact, and it is necessary to use a marker to mark the anti-loosening for easy inspection. Similarly, there are also mechanical anti-loosening methods such as split pins, slotted nuts and stop washers to reduce the risk of nut loosening.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the utility model, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the prior art, the utility model provides a new piston valve system for a shock absorber, which is locked on the piston valve system of the shock absorber together with a nut by using a threaded washer with a thread, and the threaded washer is used to adjust the restoring damping force of the shock absorber piston valve system and lock the valve system, thereby realizing the use of double nut locking method to solve the problem of nut loosening due to excessive load during use of single nut locking.

[0006] The utility model provides a novel piston valve system for a shock absorber, comprising a compression valve system and a restoring valve system. The compression valve system comprises a supporting washer and a first valve plate group which are sequentially mounted on a piston rod in the shock absorber; the restoring valve system comprises a second valve plate group, a threaded washer and a nut which are sequentially mounted on the piston rod; wherein a surface of the threaded washer contacting the piston rod is provided with threads, and the threaded washer is mounted on the piston rod by cooperating with the nut through its threads.

[0007] In one embodiment of the utility model, a piston is further included. The piston is installed between the compression valve system and the recovery valve system. The piston includes a piston upper shell contacting the compression valve system and a piston lower shell contacting the recovery valve system.

[0008] In one embodiment of the present invention, the piston is formed by press-fitting a piston upper housing and a piston lower housing.

[0009] In an embodiment of the present invention, the first valve sheet group and the second valve sheet group respectively include a plurality of valve sheets, and the number of valve sheets in the second valve sheet group is greater than the number of valve sheets in the first valve sheet group.

[0010] In an embodiment of the present invention, the second valve plate group includes valve plates with different diameters, wherein the diameter of the valve plate located at the end side of the second valve plate group is smaller than the diameters of other parts.

[0011] In one embodiment of the utility model, the threaded washer includes a washer portion and a threaded portion, the diameter of the washer portion matches the diameter of the valve plate contacting the second valve plate group; the diameter of the threaded portion is smaller than the diameter of the washer portion, and the threaded portion protrudes from the washer portion and faces one side of the nut.

[0012] In one embodiment of the present invention, the threaded portion is in a hexagonal nut shape, the thread set in the threaded washer is located at an end of the threaded portion away from the washer portion, and the length of the thread is not greater than the height of the threaded portion.

[0013] In one embodiment of the present invention, the thickness of the threaded washer is 5-8 mm, the thickness of the washer portion is 1.5-3 mm, and the length of the thread in the threaded portion is 3-4 mm.

[0014] In an embodiment of the present invention, the threaded washer is an integrally formed structure.

[0015] The beneficial effects of the utility model are as follows: the utility model provides a novel piston valve system for a shock absorber, which locks the valve system by adjusting the restoring damping force of the shock absorber piston valve system by using a threaded gasket, so that the piston valve system is conveniently adjustable, and the damping stability and strength of the piston valve system are improved, so that the locking mechanism of the shock absorber piston valve system is not easy to fall off and has good durability.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present utility model, and together with the specification, are used to explain the principles of the present utility model. Obviously, the drawings described below are only some embodiments of the present utility model, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of the piston valve system of the utility model;

[0019] Figure 2It is a schematic diagram of the split structure of the piston valve system of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the threaded washer in the utility model;

[0021] Figure 4 It is a structural sectional view of the threaded washer in the utility model.

[0022] In the figure: 100, piston rod; 1, compression valve system; 11, support gasket; 12, first valve plate group; 2, recovery valve system; 21, second valve plate group; 22, threaded gasket; 221, gasket part; 222, threaded part; 223, thread; 23, nut; 3, piston; 31, piston upper shell; 32, piston lower shell. DETAILED DESCRIPTION

[0023] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and the features in the embodiments can be combined with each other without conflict. It should also be understood that the terms used in the embodiments of the present invention are intended to describe specific implementation schemes, rather than to limit the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are usually carried out under conventional conditions or under the conditions recommended by the manufacturers.

[0024] See also Figures 1 to 4 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change in the proportion relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the utility model without substantially changing the technical content.

[0025] See also Figure 1 to Figure 2The utility model provides a novel piston valve system for a shock absorber, comprising a compression valve system 1 and a restoring valve system 2. The compression valve system 1 comprises a support washer 11 and a first valve plate group 12 which are sequentially mounted on a piston rod 100 in the shock absorber; the restoring valve system 2 comprises a second valve plate group 21, a threaded washer 22 and a nut 23 which are sequentially mounted on the piston rod 100; wherein a surface of the threaded washer 22 contacting the piston rod 100 is provided with a thread 223, and the threaded washer 22 is mounted on the piston rod 100 in cooperation with the nut 23 through its thread 223.

[0026] Specifically, the piston valve system of the shock absorber is designed to be divided into two parts, the upper part of the piston 3 constitutes the compression valve system 1, and the lower part of the piston 3 constitutes the restoring valve system 2. The compression valve system 1 provides compression damping force for the shock absorber during the compression process, and the restoring valve system 2 provides restoring damping force for the shock absorber during the restoring process. The locking method is to use a threaded washer 22 with a thread 223 to lock together with a nut 23. At the same time, the threaded washer 22 also has the function of adjusting the restoring damping force by using its own washer function and locking the piston valve system by using the function of its own thread 223.

[0027] Furthermore, if Figure 1 As shown, the piston valve system is composed of a piston 3 compression valve and a recovery valve, and a nut 23 is locked and fixed on the lower part of the piston rod 100. Figure 2 As shown, from top to bottom, it is composed of a piston rod 100, a support washer 11, a first valve plate group 12, a piston 3, a second valve plate group 21, a threaded washer 22 and a nut 23. The compression valve system 1 is composed of the support washer 11, the first valve plate group 12, and the compression surface of the upper part of the piston 3, which together provide compression damping force for the shock absorber. The restoring valve system 2 is composed of the lower part of the piston 3 and the second valve plate group 21, the threaded washer 22, and the nut 23, and is used to adjust the restoring damping force.

[0028] In this way, a double locking mechanism of the threaded washer 22 with threads 223 and the nut 23 is realized on the locking mechanism of the piston valve system, thereby improving the adjustability and strength of the piston valve system and reducing the risk of falling off.

[0029] See also Figure 1 to Figure 2 In one embodiment, the piston 3 is further included. The piston 3 is installed between the compression valve system 1 and the recovery valve system 2. The piston 3 includes an upper piston housing 31 contacting the compression valve system 1 and a lower piston housing 32 contacting the recovery valve system 2. The piston 3 is formed by press-fitting the upper piston housing 31 and the lower piston housing 32.

[0030] Specifically, the piston 3 is an integral piston 3, and is divided into two upper and lower housing parts, namely, an upper piston housing 31 and a lower piston housing 32, and the upper piston housing 31 and the lower piston housing 32 are assembled together by press-fitting to provide a larger compression damping force adjustment range for the shock absorber and stabilize its damping force value. At the same time, the upper piston housing 31 and the lower piston housing 32 are also used as a part of the contact compression valve system 1 and the restoring valve system 2, respectively, and the damping range between the upper piston housing 31 and the lower piston housing 32 is used to increase the damping effective range of the compression valve system 1 and the restoring valve system 2.

[0031] See also Figure 2 In one embodiment, the first valve sheet group 12 and the second valve sheet group 21 respectively include a plurality of valve sheets, and the number of valve sheets in the second valve sheet group 21 is greater than the number of valve sheets in the first valve sheet group 12 .

[0032] Furthermore, the second valve plate group 21 includes valve plates with different diameters, and forms a two-stage valve plate group structure.

[0033] Specifically, according to the damping characteristic requirements of the shock absorber piston valve system, the valve plate parameters of the valve plate groups in the compression valve system 1 and the restoring valve system 2 are adjusted, that is, the number of valve plates, diameter, thickness, stiffness and other parameters in the first valve plate group 12 and the second valve plate group 21 are selected respectively, and then the required damping characteristics are obtained in the stacked combination to form the first valve plate group 12 and the second valve plate group 21. Furthermore, the two-stage valve plate group structure is set in the second valve plate group 21, and the required progressive characteristics and linear characteristics are selected as the damping characteristics of the shock absorber.

[0034] See also Figure 3 to Figure 4 In one embodiment, the threaded washer 22 includes a washer portion 221 and a threaded portion 222, the diameter of the washer portion 221 matches the diameter of the valve plate contacting the second valve plate group 21; the diameter of the threaded portion 222 is smaller than the diameter of the washer portion 221, and the threaded portion 222 protrudes from the washer portion 221 and faces one side of the nut 23.

[0035] Furthermore, the threaded portion 222 is in the shape of a hexagonal nut 23 , the thread 223 provided in the threaded washer 22 is located at one end of the threaded portion 222 away from the washer portion 221 , and the length of the thread 223 is not greater than the height of the threaded portion 222 .

[0036] Furthermore, the thickness of the threaded washer 22 is 5-8 mm, the thickness of the washer portion 221 is 1.5-3 mm, and the length of the thread 223 in the threaded portion 222 is 3-4 mm. The threaded washer 22 is an integrally formed structure.

[0037] Specifically, the washer between the second valve plate group 21 and the nut 23 is set as a threaded washer 22, which is installed on the piston rod 100 through the elasticity of the material of the washer part 221 of the threaded washer 22 and the thread 223 of the threaded part 222, and cooperates with the nut 23 installed at the end of the piston rod 100 to enhance the locking effect of the piston valve system. Similarly, the outer contour of the threaded part 222 of the threaded washer 22 is set to a hexagonal nut 23 type, which is similar to the shape of the installed nut 23, so that the threaded washer 22 can be directly operated using the tool of the nut 23 during the installation and removal process.

[0038] Furthermore, the threaded washer 22 with threads 223 is used at the lower part of the piston 3, so that the damping force value can be adjusted by utilizing the elasticity of the material, and the locking function can be increased by utilizing the threads 223. The length L3 of the threads 223 of the threaded washer 22 is controlled to be 3-4 mm, the thickness L2 of the washer part 221 is controlled to be 1.5-3 mm, and the total thickness L1 of the threaded washer 22 is controlled to be within the range of 5-8 mm, and finally the self-locking nut 23 is used for locking.

[0039] In summary, the utility model provides a new piston valve system for a shock absorber, which is locked on the piston valve system of the shock absorber together with a nut by using a threaded washer with a thread, and the threaded washer is used to adjust the restoring damping force of the shock absorber piston valve system and lock the valve system, thereby realizing the double nut locking method, and the setting of the threaded washer improves the damping adjustability and strength of the piston valve system, so that the locking mechanism of the shock absorber piston valve system is not easy to fall off and has good durability.

[0040] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A novel piston valve system for a shock absorber, characterized in that: include: A compression valve system (1), the compression valve system (1) comprising a support washer (11) and a first valve plate group (12) which are sequentially mounted on a piston rod (100) in the shock absorber; A restoring valve system (2), the restoring valve system (2) comprising a second valve plate group (21), a threaded washer (22) and a nut (23) which are sequentially mounted on the piston rod (100); The surface of the threaded washer (22) contacting the piston rod (100) is provided with threads (223), and the threaded washer (22) is mounted on the piston rod (100) by cooperating with the nut (23) through its threads (223).

2. The piston valve system according to claim 1, characterized in that: The invention also comprises a piston (3), wherein the piston (3) is installed between the compression valve system (1) and the recovery valve system (2), and the piston (3) comprises an upper piston housing (31) contacting the compression valve system (1) and a lower piston housing (32) contacting the recovery valve system (2).

3. The piston valve system according to claim 2, characterized in that: The piston (3) is formed by press-fitting the piston upper housing (31) and the piston lower housing (32).

4. The piston valve system according to claim 1, characterized in that: The first valve sheet group (12) and the second valve sheet group (21) respectively include a plurality of valve sheets, and the number of valve sheets in the second valve sheet group (21) is greater than the number of valve sheets in the first valve sheet group (12).

5. The piston valve system according to claim 4, characterized in that: The second valve plate group (21) includes valve plates of different diameters, wherein the diameter of the valve plate located at the end side of the second valve plate group (21) is smaller than the diameter of other parts.

6. The piston valve system according to claim 1, characterized in that: The threaded washer (22) comprises: A gasket portion (221), wherein the diameter of the gasket portion (221) matches the diameter of the valve plate contacting the second valve plate group (21); A threaded portion (222), wherein the diameter of the threaded portion (222) is smaller than the diameter of the washer portion (221), and the threaded portion (222) protrudes from the washer portion (221) and faces one side of the nut (23).

7. The piston valve system according to claim 6, characterized in that: The threaded portion (222) is in the form of a hexagonal nut, the thread (223) provided in the threaded washer (22) is located at an end of the threaded portion (222) away from the washer portion (221), and the length of the thread (223) is not greater than the height of the threaded portion (222).

8. The piston valve system according to claim 7, characterized in that: The thickness of the threaded washer (22) is 5-8 mm, the thickness of the washer portion (221) is 1.5-3 mm, and the length of the thread (223) in the threaded portion (222) is 3-4 mm.

9. The piston valve system according to claim 8, characterized in that: The threaded washer (22) is an integrally formed structure.

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