Leak-proof damper valve seat

Abstract

The leakproof damper valve seat comprises an outer steel pipe and a valve seat body, the valve seat body is provided with an oil inlet groove and a pressure relief groove, an oil collecting groove and a first buffer groove are formed in the oil inlet groove, reset holes are formed in the bottom of the first buffer groove, a pressure stabilizing groove is formed between every two adjacent reset holes, and the two side walls of each pressure stabilizing groove are inclined faces. A first matching part and a second matching part are sequentially arranged on the periphery of the valve seat body from top to bottom, the first matching part is used for installing an inner steel pipe, the second matching part is used for installing a third steel pipe, and the diameter of the second matching part is larger than that of the first matching part; the abutting position of the periphery of the second matching part and the inner wall of the third steel pipe is concaved inwards in the radial direction to form a sealing groove, and an elastic sealing ring is installed in the sealing groove. The leakage-proof shock absorber valve seat solves the problems that when an existing valve seat is reset, stability is poor, a sealing position is impacted, and a gap is generated at the connecting position of the valve seat and a steel pipe.

Description

Technical Field

[0001] This utility model relates to the field of automotive shock absorber technology, and in particular to a leak-proof shock absorber valve seat. Background Technology

[0002] In practical applications of shock absorbers, the roundness and concentricity of the product and the steel pipe can affect their performance. Due to these factors, small gaps may actually exist between them. When the shock absorber is working, the oil can leak through these gaps. This leakage can affect the normal operation of the shock absorber. Simultaneously, the state of the oil during the shock absorber's operation plays a crucial role in its sealing performance. When the internal oil is unstable during reset, this significantly impacts the shock absorber's sealing performance. In principle, unstable oil reset can lead to pressure fluctuations. For example, excessive pressure can cause the oil to exert excessive impact force on the seals, potentially causing minor deformations. Like a dam frequently battered by waves, even a robust structure can develop cracks or loosen under prolonged impact. For the shock absorber's seals, this deformation can damage its originally tight sealing structure, reducing its sealing performance. Therefore, there is a need for a valve seat that can avoid the impact on the seal caused by the unavoidable low roundness and concentricity of the steel pipe due to the processing of the steel pipe, as well as the impact on the oil during reset, which puts the pipe in an unstable state. Summary of the Invention

[0003] The problem this utility model aims to solve is to provide a leak-proof shock absorber valve seat that addresses the issues of poor stability during valve seat reset, impact on the sealing area, and gaps at the connection between the valve seat and the steel pipe.

[0004] The technical solution adopted by this utility model to solve the above problems is as follows: a leak-proof shock absorber valve seat, including an outer steel pipe and a valve seat body installed inside the outer steel pipe. An oil inlet groove and a pressure relief groove are respectively opened at both axial ends of the valve seat body. An oil collection groove and a first buffer groove are provided in the oil inlet groove, and a second buffer groove is provided in the pressure relief groove. A plurality of pressure relief holes are arranged in an array at intervals around the valve seat axis at the bottom of the oil collection groove for connecting the oil collection groove and the second buffer groove. A plurality of reset holes are provided at the bottom of the first buffer groove, wherein a [missing information - likely a spacer or vent] is opened between two adjacent reset holes. A pressure stabilizing groove is used to connect two adjacent reset holes. Both sides of the pressure stabilizing groove are inclined and gradually expand outward from the bottom to connect with the bottom of the first buffer groove. The outer periphery of the valve seat body is provided with a first mating part and a second mating part from top to bottom. The first mating part is used to install the inner steel pipe, and the second mating part is used to install the third steel pipe. The diameter of the second mating part is larger than that of the first mating part. The contact point between the outer periphery of the second mating part and the inner wall of the third steel pipe is radially recessed inward to form a sealing groove. An elastic sealing ring is installed in the sealing groove.

[0005] Compared with existing technologies, by creating a pressure-stabilizing groove between the two reset holes, since both sides of the pressure-stabilizing groove are inclined and gradually expand outward from the bottom to connect with the bottom of the first buffer groove, the oil in the two adjacent reset holes impacts the pressure-stabilizing groove relative to each other. As the space gradually increases due to the gradually expanding side walls, the pressure drop will be relatively gradual, allowing the oil with different pressures in the two adjacent reset holes to mix gently before entering the first buffer groove for buffering. This multiple buffering process stabilizes the oil pressure and makes the reset stable. At the same time, a sealing groove is set at the contact point between the outer periphery of the second mating part and the inner wall of the third steel pipe, and a sealing ring is installed in the sealing groove to abut against the inner wall of the third steel pipe. This avoids leakage problems caused by poorly processed steel pipes with low concentricity and roundness when connected to the second mating part.

[0006] Furthermore, the inclination angle between the sidewall of the voltage stabilizing tank and the bottom surface is 105° to 130°.

[0007] Furthermore, the sidewall of the pressure relief groove is connected to the reset hole via a rounded surface transition, which helps improve the flow stability of the oil. When the oil passes through the rounded surface, the flow direction gradually changes, preventing sudden impacts and turbulence.

[0008] Furthermore, the valve seat body has a protrusion on one side of the oil inlet groove to form a first annular valve line, which divides the oil inlet groove to form an oil collection groove located in the center and a first buffer groove located outside the oil collection groove.

[0009] Furthermore, a second annular valve line is provided at the outer circumference of the oil inlet groove. The second annular valve line is higher than the first annular valve line. The first and second annular valve lines support the valve plate, and the height difference between the two lines further enhances the support effect. The higher second annular valve line can provide stronger support at the edge of the valve plate, preventing the edge of the valve plate from warping.

[0010] Furthermore, the height of the second annular valve line is 0.01mm to 0.013mm greater than the height of the first annular valve line.

[0011] Furthermore, the sidewall of the oil collection tank is a conical surface that gradually expands outward from the bottom, and the pressure relief hole is located at the bottom of the oil collection tank, which can collect the oil to the bottom of the oil collection tank. Attached Figure Description

[0012] Figure 1 This is a cross-sectional view of the present invention;

[0013] Figure 2 This is a cross-sectional view of the present invention after removing the outer steel pipe, inner steel pipe, and third steel pipe.

[0014] Figure 3 This is a perspective view of the present utility model;

[0015] Figure 4 This is a perspective view of the present utility model.

[0016] Diagram: 1. Valve seat body; 1.1. First mating part; 1.2. Second mating part; 1.2.1. Sealing groove; 2. Oil inlet groove; 2.1. Oil collection groove; 2.2. First buffer groove; 2.3. First annular valve line; 2.4. Second annular valve line; 3. Pressure relief groove; 3.1. Second buffer groove; 3.2. Arc surface; 4. Pressure relief hole; 5. Reset hole; 6. Pressure stabilizing groove; 7. Outer steel pipe; 8. Inner steel pipe; 9. Third steel pipe; 10. Sealing ring. Detailed Implementation

[0017] Before describing any embodiment of this invention in detail, it should be understood that the invention is not limited in its application to the details of the construction and arrangement of the components set forth in the following description or illustrated in the following figures. The invention is capable of other embodiments and can be practiced or carried out in various ways. Furthermore, it should be understood that the wording and terminology used herein are for descriptive purposes and should not be considered limiting. The use of “comprising” or “having” and variations thereof herein is intended to cover the items set forth below and their equivalents, as well as any additional items. Unless otherwise specified or limited, the terms “installation,” “connection,” “support,” and “linkage,” and variations thereof are used broadly and cover both direct and indirect installation, connection, support, and linking. Moreover, “connection” and “linkage” are not limited to physical or mechanical connections or links.

[0018] Furthermore, firstly, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as a limitation on this utility model. Secondly, 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 another embodiment, the number of the element can be multiple. The term "a" should not be construed as a limitation on the quantity.

[0019] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

[0020] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0021] Please see Figures 1 to 4 A leak-proof shock absorber valve seat comprises an outer steel pipe 7 and a valve seat body 1 installed inside the outer steel pipe 7. The valve seat body 1 has an oil inlet groove 2 and a pressure relief groove 3 at its two axial ends. The oil inlet groove 2 contains an oil collection groove 2.1 and a first buffer groove 2.2, and the pressure relief groove 3 contains a second buffer groove 3.1. The bottom of the oil collection groove 2.1 has several pressure relief holes 4 spaced around the valve seat axis, connecting the oil collection groove 2.1 with the second buffer groove 3.1. The bottom of the first buffer groove 2.2 has several reset holes 5, and a pressure stabilizing groove 6 is formed between adjacent reset holes 5. The side walls of the pressure stabilizing groove 6 are inclined and gradually expand outward from the bottom to connect with the bottom of the first buffer groove 2.2. The inclination angle between the side walls and the bottom surface of the pressure stabilizing groove 6 is 105° to 130°. This structure allows the oil to mix and buffer smoothly between adjacent reset holes 5, stabilizing the oil pressure and ensuring stable reset.

[0022] The valve seat body 1 has a first mating part 1.1 and a second mating part 1.2 arranged sequentially from top to bottom on its outer periphery. The first mating part 1.1 is used to install the inner steel pipe 8, and the second mating part 1.2 is used to install the third steel pipe 9. The diameter of the second mating part 1.2 is larger than that of the first mating part 1.1. The outer periphery of the second mating part 1.2 is radially recessed at the point where it abuts against the inner wall of the third steel pipe 9 to form a sealing groove 1.2.1. An elastic sealing ring 10 is installed in the sealing groove 1.2.1 to effectively prevent oil leakage.

[0023] Meanwhile, the sidewall of the pressure relief groove 3 is connected to the reset hole 5 through the arc surface 3.2, which improves the stability of oil flow and avoids sudden impact and turbulence when the oil passes through.

[0024] Furthermore, the valve seat body 1 has a protrusion on one side of the oil inlet groove 2 forming a first annular valve line 2.3, which divides the oil inlet groove 2 into a central oil collection groove 2.1 and an outer first buffer groove 2.2. The outer ring of the oil inlet groove 2 is provided with a second annular valve line 2.4, which is 0.01 mm to 0.013 mm higher than the first annular valve line 2.3. Both lines jointly support the valve plate, with the higher second annular valve line 2.4 providing stronger support at the edge of the valve plate to prevent the edge from warping. Moreover, the sidewall of the oil collection groove 2.1 is a conical surface that gradually expands outwards from the bottom. The pressure relief hole 4 is located at the bottom of the oil collection groove 2.1, which can collect oil towards the bottom of the oil collection groove 2.1, further optimizing the performance of the shock absorber valve seat. The above description is only of the preferred embodiment of this utility model and should not be construed as limiting the claims.

[0025] This utility model is not limited to the above embodiments, and its specific structure may vary. All changes made within the scope of the independent claims of this utility model are also within the scope of protection of this utility model.

Claims

1. A leak-proof shock absorber valve seat, characterized in that: The valve body includes an outer steel pipe (7) and a valve seat body (1) installed inside the outer steel pipe (7). The valve seat body (1) has an oil inlet groove (2) and a pressure relief groove (3) at its axial ends. The oil inlet groove (2) contains an oil collection groove (2.1) and a first buffer groove (2.2). The pressure relief groove (3) contains a second buffer groove (3.1). The bottom of the oil collection groove (2.1) has several pressure relief holes (4) arranged in an array around the valve seat axis to connect the oil collection groove (2.1) and the second buffer groove (3.1). The bottom of the first buffer groove (2.2) has several reset holes (5), with a pressure stabilizing groove (6) between adjacent reset holes (5) to connect adjacent reset holes (5). The pressure stabilizing groove (6) has two inclined walls on both sides, which gradually expand outward from the bottom to connect with the bottom of the first buffer groove (2.2). The valve seat body (1) has a first mating part (1.1) and a second mating part (1.2) arranged from top to bottom on the outer periphery. The first mating part (1.1) is used to install the inner steel pipe (8), and the second mating part (1.2) is used to install the third steel pipe (9). The diameter of the second mating part (1.2) is larger than that of the first mating part (1.1). The contact point between the outer periphery of the second mating part (1.2) and the inner wall of the third steel pipe (9) is radially recessed to form a sealing groove (1.2.1). An elastic sealing ring (10) is installed in the sealing groove (1.2.1).

2. The anti-leakage shock absorber valve seat according to claim 1, characterized in that: The inclination angle between the side wall and the bottom surface of the voltage stabilizing tank (6) is 105° to 130°.

3. The anti-leakage shock absorber valve seat according to claim 1, characterized in that: The sidewall of the pressure relief groove (3) is connected to the reset hole (5) via an arc surface (3.2).

4. The anti-leakage shock absorber valve seat according to claim 1, characterized in that: The valve seat body (1) has a protrusion on one side of the oil inlet groove (2) to form a first annular valve line (2.3). The first annular valve line (2.3) divides the oil inlet groove (2) to form an oil collection groove (2.1) located in the center and a first buffer groove (2.2) located outside the oil collection groove (2.1).

5. The anti-leakage shock absorber valve seat according to claim 1, characterized in that: The outer ring of the oil inlet groove (2) is provided with a second annular valve line (2.4), which is higher than the first annular valve line (2.3) and supports the valve plate.

6. A leak-proof shock absorber valve seat according to claim 5, characterized in that: The height of the second annular valve line (2.4) is 0.01mm to 0.013mm greater than the height of the first annular valve line (2.3).

7. A leak-proof shock absorber valve seat according to claim 1, characterized in that: The sidewall of the oil collection groove (2.1) is a conical surface that gradually expands outward from the bottom surface, and the pressure relief hole (4) is located at the bottom surface of the oil collection groove (2.1).

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