Shock absorber piston assembly

Abstract

The utility model relates to the technical field of valve plates and discloses a shock absorber piston assembly which comprises a piston rod, a first gasket, valve plate bodies and lotus root type valve plates are arranged on the circumferential face of the piston rod, the first gasket is located on the uppermost portion of the circumferential face of the piston rod, the uppermost valve plate body is attached to the first gasket, the number of the valve plate bodies is multiple, and the lotus root type valve plates are arranged on the valve plate bodies. The lotus root valve plate is located among the valve plate bodies, through holes are formed in the surface of the lotus root valve plate, and a plurality of through holes are formed in an array mode. According to the size of the valve plate body on the circulation side, the evenly-distributed through holes are formed in the space between the inner diameter and the outer diameter of the valve plate body, the sections of the formed through holes are like lotus roots, and therefore the lotus root valve plate is formed. And meanwhile, the durability of the valve system and the intact condition of the valve system after road test durability are improved, the development cost is saved, and assembly of parts of the valve system is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of valve plates, and more particularly to a shock absorber piston assembly. Background Art

[0002] Automotive shock absorbers are chassis components. With the trend toward platform-based chassis components, their design structures are becoming increasingly limited. Traditional shock absorbers can adapt to surrounding component placement by reshaping the reservoir's exterior. As vehicle users demand ever-increasing ride comfort and handling, continuously damping control shock absorbers (ECCs) are increasingly popular. This is particularly true for SUVs, pure electric vehicles, and hybrid vehicles, which require a wider range of adjustable damping force, placing higher demands on valve system durability.

[0003] The shortcomings of the existing technology: The electronically controlled shock absorber must ensure driving comfort and control stability. Usually, in order to meet the driving comfort, the valve plate stiffness on the flow side of the restoring valve assembly is adjusted to a relatively low level, which makes it easy for the valve plate to be damaged after the valve system durability test. In order to pass the valve system durability test, it is generally necessary to increase the valve plate stiffness on the flow side of the restoring valve assembly or use high-performance valve plate materials. The method of increasing the valve plate stiffness reduces the driving comfort to varying degrees. The use of high-performance valve plate materials leads to increased development costs. It is contradictory to simultaneously meet the driving comfort and control stability of the electronically controlled shock absorber, forcing one party to compromise or increase development costs. For this reason, we have proposed a shock absorber piston assembly. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a shock absorber piston assembly to solve the problems existing in the above-mentioned background technology.

[0005] The utility model provides the following technical solution: a shock absorber piston assembly, comprising a piston rod: a first washer, a valve plate body, and a lotus root valve plate are provided on the circumferential surface of the piston rod, the first washer is located at the uppermost portion of the circumferential surface of the piston rod, the uppermost valve plate body is in contact with the first washer, a plurality of valve plate bodies are provided, the lotus root valve plate is located between the plurality of valve plate bodies, a through hole is provided on the surface of the lotus root valve plate, and a plurality of through hole arrays are provided;

[0006] Preferably, a piston body is provided on the circumferential surface of the piston rod, and the upper end surface of the piston body is in contact with the lowermost valve plate body.

[0007] Preferably, a restoring valve is provided on the circumferential surface of the piston rod, and the upper end surface of the restoring valve is in contact with the piston body.

[0008] Preferably, a second gasket is provided on the circumferential surface of the piston rod, and the upper end surface of the second gasket is in contact with the recovery valve.

[0009] Preferably, a nut is threadedly connected to the circumferential surface of the piston rod, and the upper end surface of the nut is in contact with the second washer.

[0010] The technical effects and advantages of this utility model are:

[0011] The utility model opens evenly distributed through holes in the space between the inner and outer diameters of a valve plate body according to the size of the valve plate body on the flow side. Since the cross-section of the through holes is like a lotus root, a lotus root valve plate is formed, which ensures that the damping force scheme of the matching adjustment remains unchanged, while providing the possibility of improving the durability of the valve system and the integrity of the valve system after road test durability, saving development costs and facilitating the assembly of valve system parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0013] Figure 2 It is a structural diagram of the lotus root valve piece in this utility model.

[0014] The figures are marked as follows: 1. piston rod; 2. first gasket; 3. valve plate body; 4. piston body; 5. recovery valve; 6. second gasket; 7. nut; 8. lotus root valve plate; 9. through hole. DETAILED DESCRIPTION

[0015] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the drawings in the present invention. In addition, the forms of the various structures described in the following embodiments are merely examples. The shock absorber piston assembly involved in the present invention is not limited to the various structures described in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0016] The utility model provides a shock absorber piston assembly, including a piston rod 1, a first gasket 2, a valve plate body 3 and a lotus root valve plate 8 are provided on the circumferential surface of the piston rod 1, the first gasket 2 is located at the uppermost part of the circumferential surface of the piston rod 1, the uppermost valve plate body 3 is in contact with the first gasket 2, a plurality of valve plate bodies 3 are provided, the lotus root valve plate 8 is located between the plurality of valve plate bodies 3, a through hole 9 is provided on the surface of the lotus root valve plate 8, and a plurality of through holes 9 are provided in an array. When working, according to the size of the valve plate body 3 on the flow side, uniformly distributed through holes 9 are opened in the space between the inner and outer diameters of a valve plate body 3. Since the cross-section of the opened through holes 9 is like a lotus root, a lotus root valve plate 8 is formed, which provides a possibility for ensuring that the damping force scheme of the matching adjustment remains unchanged, while improving the durability of the valve system and the integrity of the valve system after road test durability, saving development costs, and facilitating the assembly of valve system parts.

[0017] Furthermore, a piston body 4 is provided on the circumferential surface of the piston rod 1, and the upper end surface of the piston body 4 is in contact with the lowermost valve plate body 3. During operation, under the action of the piston body 4, when the shock absorber is running, the piston rod 1 drives the piston body 4 to move downward in the cylinder, which can achieve the effect of buffering and shock absorption.

[0018] Furthermore, a restoring valve 5 is provided on the circumferential surface of the piston rod 1, and the upper end surface of the restoring valve 5 is in contact with the piston body 4. During operation, under the action of the restoring valve 5, when the piston rod 1 drives the piston to move downward in the cylinder, the action of the restoring valve 5 achieves the effect of resetting the piston body 4 and the piston rod 1.

[0019] Furthermore, a second gasket 6 is provided on the circumferential surface of the piston rod 1 , and the upper end surface of the second gasket 6 is in contact with the restoration valve 5 . During operation, the second gasket 6 positions the restoration valve 5 to limit its position.

[0020] Furthermore, the circumferential surface of the piston rod 1 is threadedly connected with a nut 7, and the upper end surface of the nut 7 is in contact with the second washer 6. During operation, when the second washer 6 is installed on the piston rod 1, the nut 7 is tightened on the circumferential surface of the piston rod 1, thereby achieving the effect of fixing the upper structure as a whole, thereby forming a restoration valve 5 assembly.

[0021] The working principle of the present invention is as follows: the four valve plate bodies 3 are first passed through the circumferential surface of the piston rod 1, and the lotus root valve plate 8 is placed between the four valve plate bodies 3. Then the first gasket 2, the piston body 4, the restoring valve 5 and the second gasket 6 are sleeved on the circumferential surface of the piston rod 1. Finally, the nut 7 is tightened on the circumferential surface of the piston rod 1 to fix the upper structure as a whole, thereby forming a restoring valve 5 assembly. When in use, since the surface of the lotus root valve plate 8 is provided with a through hole 9, the damping force scheme of the matching adjustment can be guaranteed to remain unchanged, while providing the possibility of improving the durability of the valve system and the integrity of the valve system after the road test, while saving development costs and facilitating the assembly of valve system parts.

[0022] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0023] Secondly: The drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. In the absence of conflicts, the same embodiment and different embodiments of the utility model can be combined with each other.

[0024] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A shock absorber piston assembly, comprising a piston rod (1), characterized in that: The circumferential surface of the piston rod (1) is provided with a first gasket (2), a valve plate body (3) and a lotus root valve plate (8); the first gasket (2) is located at the uppermost portion of the circumferential surface of the piston rod (1); the uppermost valve plate body (3) is fitted with the first gasket (2); a plurality of valve plate bodies (3) are provided; the lotus root valve plate (8) is located between the plurality of valve plate bodies (3); a through hole (9) is provided on the surface of the lotus root valve plate (8); and a plurality of through holes (9) are provided in an array.

2. The shock absorber piston assembly according to claim 1, characterized in that: The circumferential surface of the piston rod (1) is provided with a piston body (4), and the upper end surface of the piston body (4) is in contact with the lowermost valve plate body (3).

3. The shock absorber piston assembly according to claim 1, characterized in that: A restoring valve (5) is provided on the circumferential surface of the piston rod (1), and the upper end surface of the restoring valve (5) is in contact with the piston body (4).

4. The shock absorber piston assembly according to claim 1, characterized in that: A second gasket (6) is provided on the circumferential surface of the piston rod (1), and the upper end surface of the second gasket (6) is in contact with the recovery valve (5).

5. The shock absorber piston assembly according to claim 1, characterized in that: The circumferential surface of the piston rod (1) is threadedly connected to a nut (7), and the upper end surface of the nut (7) is in contact with the second washer (6).

Images