Shock absorber of rebuilt valve structure

Abstract

The utility model relates to the field of shock absorbers, in particular to a shock absorber of a rebuilt valve structure. Relates to the field of shock absorbers and comprises a piston rod, a gasket arranged at the top end of the piston rod, a spring piece located at the bottom of the gasket, a circulation valve piece arranged at the bottom of the spring piece and a nut arranged on the outer side of the bottom end of the piston rod, a spiral spring is arranged on the outer side of the nut, and a shock absorption assembly is arranged in the middle of the piston rod. The damper has the advantages that the influence of spring load fluctuation on damping force is reduced by adjusting the distribution of the inner holes of the piston; a piston ring with a height difference sealing valve plate is omitted, and an O-shaped ring is adopted for sealing, so that the indicator curve is smoother after the shock absorber is durable; the circulation area of an inner hole of the piston is changed through the cover hole valve plate, high-speed recovery damping force adjustment is achieved, and new pistons with different inner holes do not need to be developed.

Description

Technical Field

[0001] The utility model relates to the field of shock absorbers, in particular to a shock absorber with a recovery valve structure. Background Art

[0002] The valve disc assembly is pre-stressed by a coil spring. The damping force generated when the valve disc opens is affected by the spring load fluctuation. The spring load fluctuation causes the damping force to amplify the fluctuation.

[0003] At present, after the shock absorber has worn out, the sleeve is grooved by the inner diameter of the tilted valve plate, causing the shock absorber's dynamometer diagram to be uneven. As a result, when in use, the fluctuation of the spring load may cause the damping force to be unstable, affecting the performance of the shock absorber. Summary of the Invention

[0004] The technical problem to be solved by the utility model is that after the shock absorber is worn out, grooves are scratched on the inner diameter of the inclined valve plate of the sleeve, causing the shock absorber's dynamometer diagram to be uneven, affecting the shock absorber's performance and causing customer complaints.

[0005] In order to solve the above problems, the technical solution adopted by the present invention is as follows: comprising a piston rod, a washer arranged at the top end of the piston rod, a spring sheet located at the bottom of the washer, a flow valve sheet arranged at the bottom of the spring sheet, and a nut arranged on the outside of the bottom end of the piston rod, a valve system spring is arranged on the inner side of the nut, and a vibration damping assembly is arranged in the middle of the piston rod;

[0006] The vibration damping assembly includes a piston arranged in the middle of the piston rod, a cover hole valve plate is arranged inside the piston, a guide nut is arranged at the bottom of the cover hole valve plate, a restoration valve plate assembly is arranged on the outside of the guide nut, an adjustment washer is arranged at the bottom of the restoration valve plate assembly, an adjustment valve plate assembly is arranged at the bottom of the adjustment washer, an O-ring is arranged at the bottom of the adjustment valve plate assembly, an O-ring washer is arranged at the bottom of the O-ring, and a valve system spring is arranged between the O-ring washer and the nut.

[0007] The beneficial effects of the present invention are as follows: by adjusting the distribution of the inner hole of the piston, the influence of the spring load fluctuation on the damping force is reduced, the piston ring with the height difference sealing valve plate is eliminated, and an O-ring seal is adopted, so that the power curve of the shock absorber is smoother after durability, and a cover hole valve plate is used to change the flow surface knot of the inner hole of the piston, so as to realize high-speed restoration damping force adjustment without developing a new piston with a different inner hole.

[0008] Furthermore, the restoration valve disc assembly is specifically a shutoff valve disc arranged outside the guide nut, and a plurality of spring load adjustment valve discs are arranged at the bottom of the shutoff valve disc.

[0009] Furthermore, the thicknesses of the plurality of spring load adjustment valve sheets are inconsistent.

[0010] This utility model provides a shock absorber with a restoring valve structure. It has the following beneficial effects: by adjusting the distribution of the piston inner hole, the influence of spring load fluctuation on the damping force is reduced; the sealing valve plate with a height difference of the piston ring is eliminated and an O-ring seal is adopted, so that the shock absorber has a smoother power curve after durability; and the cover hole valve plate is used to change the flow area of ​​the piston inner hole, realizing high-speed restoring damping force adjustment without developing a new piston with a different inner hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a diagram showing the appearance of the utility model;

[0012] Figure 2 It is a structural diagram of the utility model;

[0013] Figure 3 This is an exploded view of the present invention.

[0014] The text labels shown in the figure indicate: 1. Gasket; 2. Spring plate; 3. Circulation valve plate; 4. Piston; 5. Cover hole valve plate; 6. Guide nut; 7. Restoring valve plate assembly; 8. Adjusting gasket; 9. Adjusting valve plate assembly; 10. O-ring; 11. O-ring gasket; 12. Valve system spring; 13. Nut; 14. Shut-off valve plate; 15. Valve plate; 16. Piston rod. DETAILED DESCRIPTION

[0015] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention.

[0016] Example:

[0017] like Figure 1-3 As shown, a shock absorber with a restoring valve structure includes a piston rod 16, a washer 1 arranged at the top of the piston rod 16, a spring plate 2 located at the bottom of the washer 1, a flow valve plate 3 arranged at the bottom of the spring plate 2, and a nut 13 arranged on the outside of the bottom end of the piston rod 16, a valve system spring 12 is arranged on the outside of the nut 13, and a vibration damping assembly is arranged in the middle of the piston rod 16;

[0018] The shock absorbing assembly includes a piston 4 arranged in the middle of the piston rod 16, a cover hole valve plate 5 is arranged inside the piston 4, a guide nut 6 is arranged at the bottom of the cover hole valve plate 5, a restoration valve plate assembly 7 is arranged on the outside of the guide nut 6, an adjustment washer 8 is arranged at the bottom of the restoration valve plate assembly 7, a spring load adjustment valve plate assembly 9 is arranged at the bottom of the adjustment washer 8, an O-ring 10 is arranged at the bottom of the adjustment valve plate assembly 9, an O-ring washer 11 is arranged at the bottom of the O-ring 10, and a valve system spring 12 is arranged between the O-ring washer 11 and the nut 13.

[0019] The flow side is composed of a gasket 1, a spring plate 2, a flow valve plate 3, and a piston 4. It is a one-way valve that opens to allow oil to flow during the compression stroke and closes to prevent oil from flowing out of the outer ring hole of the piston during the recovery stroke. The thickness and leg height of the spring plate 2 can be changed to adjust the preload of the flow valve plate 3, change the speed of opening and closing of the flow valve plate 3, and thus change the hysteresis during the recovery and compression reversing movement of the shock absorber. The piston side is composed of a piston 4, a cover hole valve plate 5, a guide nut 6, a recovery valve plate assembly 7, an adjusting gasket 8, and an adjusting valve plate assembly 9, O-ring 10, O-ring gasket 11, valve spring 12, and nut 13 form the desired restoring damping force during the restoring stroke. The piston 4, combined with valve discs 5 of varying diameters, can adjust the flow area of ​​the restoring orifice without having to develop pistons with varying orifice diameters and numbers of holes. The restoring valve disc assembly 7 and adjustment washers 8 of varying thicknesses and shapes enable smooth valve disc opening, enhancing vehicle ride comfort. The adjustment valve disc assembly 9 covers the O-ring gasket and supports the restoring valve disc assembly 7 and adjustment washers 8. Adjustment valve discs 9 of varying thicknesses adjust the installation load of the valve spring 12, allowing for the selection of different valve springs 12 to adjust the spring installation load. The optimized piston internal hole distribution reduces the amplification factor of spring load fluctuations on damping force fluctuations. The guide nut 6 compresses the gasket 1, spring disc, and flow valve disc 3, while the nut 13 compresses the guide nut. This stabilizes the valve length and standardizes the piston rod 16 end length.

[0020] The restoration valve disc assembly 7 is specifically a shutoff valve disc 14 arranged outside the guide nut 6 , and a plurality of spring load adjustment valve discs 15 are arranged at the bottom of the shutoff valve disc 14 .

[0021] The thicknesses of the plurality of spring load adjustment valve plates 15 may be different.

[0022] The restoration valve disc assembly 7 is composed of a shutoff valve disc 14 and valve discs 15 of different thicknesses. By changing the width and number of the notches of the shutoff valve disc 14, the flow area of ​​the low-speed oil can be changed.

[0023] Working principle: The circulation side is composed of gasket 1, spring plate 2, circulation valve plate 3, and piston 4. It is a one-way valve. It opens to allow oil to flow during the compression stroke and closes to prevent oil from flowing out of the outer ring hole of the piston during the recovery stroke. The thickness and leg height of the spring plate 2 can be changed to adjust the preload of the circulation valve plate 3, change the speed of opening and closing of the circulation valve plate 3, and thus change the hysteresis during the recovery and compression reversing movement of the shock absorber. The piston side is composed of piston 4, cover hole valve plate 5, guide nut 6, recovery valve plate assembly 7, adjustment gasket 8, and adjustment valve plate assembly The assembly 9, O-ring 10, O-ring gasket 11, valve spring 12, and nut 13 are constructed to generate the desired restoring damping force during the restoring stroke. The piston 4, combined with valve discs 5 of varying diameters, can adjust the flow area of ​​the restoring orifice without having to develop pistons with varying orifice diameters and numbers of holes. The restoring valve disc assembly 7 and adjustment washers 8 of varying thickness and shape enable smooth opening of the valve disc assembly, improving vehicle ride comfort. The spring load adjustment valve disc assembly 9 covers the O-ring gasket and supports the flow valve disc assembly 7 and adjustment washers 8. Adjustment valve discs 9 of varying thicknesses adjust the installation load of the valve spring 12, allowing for the selection of different valve springs 12 to adjust the spring installation load. The optimized bore distribution on the piston interior reduces the amplification factor of spring load fluctuations on damping force fluctuations. The guide nut 6 compresses the gasket 1, spring disc, and flow valve disc 3, while the nut 13 compresses the guide nut. This stabilizes the valve length and standardizes the piston rod 16 end length.

[0024] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article or device. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. The above is only a preferred implementation method of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements, modifications or changes can be made, and the above technical features can be combined in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should all be regarded as the scope of protection of the present invention.

Claims

1. A shock absorber with a restoring valve structure, characterized in that: It comprises a piston rod (16), a washer (1) arranged at the top end of the piston rod (16), a spring sheet (2) located at the bottom of the washer (1), a flow valve sheet (3) arranged at the bottom of the spring sheet (2), and a nut (13) arranged on the outside of the bottom end of the piston rod (16), a valve system spring (12) is arranged on the inner side of the nut (13), and a vibration damping assembly is arranged in the middle of the piston rod (16); The vibration damping assembly comprises a piston (4) arranged in the middle of a piston rod (16); a cover hole valve plate (5) is arranged inside the piston (4); a guide nut (6) is arranged at the bottom of the cover hole valve plate (5); a recovery valve plate assembly (7) is arranged on the outside of the guide nut (6); an adjustment washer (8) is arranged at the bottom of the recovery valve plate assembly (7); an adjustment valve plate assembly (9) is arranged at the bottom of the adjustment washer (8); an O-ring (10) is arranged at the bottom of the adjustment valve plate assembly (9); an O-ring washer (11) is arranged at the bottom of the O-ring (10); and a valve system spring (12) is arranged between the O-ring washer (11) and the nut (13).

2. The shock absorber with a restoring valve structure according to claim 1, characterized in that: The restoration valve disc assembly (7) is specifically a shutoff valve disc (14) arranged outside the guide nut (6), and a plurality of spring load adjustment valve discs (15) are arranged at the bottom of the shutoff valve disc (14).

3. The shock absorber with a restoring valve structure according to claim 2, characterized in that: The thicknesses of the plurality of spring load adjustment valve sheets (15) are inconsistent.

Images