Dovetail groove structure type circulation valve element

Abstract

The utility model belongs to the technical field of shock absorber accessories, and particularly relates to a dovetail groove structure type circulation valve element which is applied to an electromagnetic valve shock absorber and arranged at the joint of an electromagnetic valve and the shock absorber. The circulation valve element comprises a body, a sealing ring groove formed in the end of the body and a first sealing ring embedded in the sealing ring groove, the sealing ring groove comprises a bottom face, an inner side wall close to the center of the body and an outer side wall, and the outer side wall is obliquely arranged from the bottom face to the central axis of the body. The outer diameter of the first sealing ring is smaller than the minimum inner diameter of the outer side wall. The flow valve core is used for solving the technical problems that a sealing ring groove on an existing flow valve core is not provided with an anti-falling structure, and a sealing ring easily falls off in the assembling process.

Description

Technical Field

[0001] This utility model belongs to the technical field of shock absorber accessories, specifically relating to a dovetail groove structure flow valve core. Background Technology

[0002] An external solenoid valve vibration damper includes a solenoid valve and a damper body. The solenoid valve typically includes a flow valve core, a sealing ring, and a solenoid valve assembly. The flow valve core is press-fitted into the solenoid valve assembly, and the sealing ring is inserted into the sealing ring groove on the flow valve core. The end of the solenoid valve assembly with the flow valve core is press-fitted onto the damper body. The solenoid valve assembly abuts against the oil reservoir of the damper body, and the flow valve core passes through the oil reservoir and abuts against the intermediate cylinder, thus realizing the connection between the solenoid valve and the damper body.

[0003] Currently, the sealing ring groove on the flow valve core of common solenoid valve dampers has a straight groove structure. During the process of installing the sealing ring into the straight groove of the flow valve core, the straight groove structure has no anti-fall-off measures, which makes it impossible to stably fix the sealing ring in the sealing ring groove, resulting in the sealing ring being easy to fall off, which is not conducive to assembly. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a dovetail groove structure flow valve core, which solves the technical problem that the sealing ring groove on the current flow valve core lacks an anti-detachment structure, making the sealing ring prone to detachment during assembly.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: a dovetail groove structure flow valve core, which is applied to a solenoid valve damper and is set at the connection between the solenoid valve and the damper. The flow valve core includes a body, a sealing ring groove set at the end of the body, and a first sealing ring embedded in the sealing ring groove. The sealing ring groove includes a bottom surface, an inner side wall near the center of the body, and an outer side wall. The outer side wall is inclined from the bottom surface toward the central axis of the body. The outer diameter of the first sealing ring is smaller than the minimum inner diameter of the outer side wall.

[0006] Preferably, the inclination angle of the outer sidewall is in the range of 78-80°.

[0007] Preferably, the depth of the sealing ring groove is 1.2 mm, and the span of the bottom surface between the inner sidewall and the outer sidewall is 2.4 mm.

[0008] Preferably, the wire diameter of the first sealing ring is 1.5 mm.

[0009] Preferably, the hardness of the first sealing ring is 90 MPa.

[0010] Preferably, the outer peripheral surface of the body connected to the oil reservoir of the shock absorber is inclined.

[0011] Preferably, an annular groove is provided on the outer peripheral surface at the position where it abuts against the oil reservoir, for connecting the second sealing ring.

[0012] The beneficial effects of adopting the technical solution of this utility model are as follows:

[0013] This invention features an inclined outer wall that acts as a stop for the sealing ring when it is inserted into the sealing ring groove on the end face of the flow valve core. This prevents the sealing ring from accidentally falling off when the solenoid valve is pressed onto the damper body, ensuring smooth assembly. By inclining the outer wall of the sealing ring groove towards the central axis of the flow valve core from the bottom surface, and by making the outer diameter of the sealing ring larger than the minimum inner diameter of the outer wall, the outer wall exerts pre-pressure on the sealing ring when it is inserted into the groove, forming a limiting structure. This effectively prevents the sealing ring from accidentally falling off during flipping or assembly, ensuring smooth assembly and improving assembly efficiency. Attached Figure Description

[0014] Figure 1 A cross-sectional schematic diagram of an embodiment of a dovetail groove structure flow valve core;

[0015] Figure 2 This is a schematic diagram of the assembly of a dovetail groove structure flow valve core onto a vibration damper.

[0016] in, Figure 1 , 2 In the middle, 1-body, 2-sealing ring groove, 21-outer side wall, 22-bottom surface, 23-inner side wall, 3-outer peripheral surface, 31-annular groove, 4-first sealing ring, 5-solenoid valve assembly, 6-oil reservoir, 7-intermediate cylinder. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments, and do not limit the scope of the present utility model.

[0018] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] The specific implementation method is as follows:

[0021] Example 1, such as Figure 1 , 2 As shown, a dovetail groove structure flow valve core is used in an external solenoid valve type vibration damper and is located at the connection between the solenoid valve and the vibration damper. The flow valve core includes a body 1, a sealing ring groove 2, and a first sealing ring 4.

[0022] The sealing groove 2 is disposed on the end face of the body and includes a bottom surface 22, an inner sidewall 23, and an outer sidewall 21. The inner sidewall 23 is located on the side closest to the central axis of the body 1, and the outer sidewall 21 is disposed opposite to the inner sidewall 23. The outer sidewall 21 and the inner sidewall 23 are respectively connected to the two ends of the bottom surface 22, forming an annular groove. The outer sidewall 21 slopes and extends from the bottom surface 22 toward the central axis of the body 1, presenting a dovetail shape.

[0023] The first sealing ring 4 is embedded in the sealing ring groove 2. The outer diameter of the first sealing ring is larger than the minimum inner diameter of the outer wall 21. This causes the first sealing ring 4 embedded in the sealing ring groove 2 to be subjected to the pre-pressure of the outer wall 21, which has a limiting effect on the first sealing ring 4 and can effectively prevent the first sealing ring 4 from accidentally falling off during the flipping or assembly process.

[0024] In this embodiment, a dovetail groove structure flow valve core is used by pressing the body onto the solenoid valve assembly 5, pre-embedding the first sealing ring 4 into the sealing ring groove 2, and then pressing the solenoid valve assembly 5 onto the damper body. At this time, the solenoid valve assembly abuts against the outer wall of the oil reservoir 6, and the flow valve core passes through the opening on the oil reservoir 6 and abuts against the surface of the intermediate cylinder 7. Because the inclined outer wall 21 has a pre-pressure on the first sealing ring 4, and the end of the inclined outer wall 21 has a blocking effect on the first sealing ring 4, a non-detachment structure is formed. Therefore, it can effectively prevent the first sealing ring 4 from accidentally falling off during the flipping or assembly process, ensuring assembly reliability and improving assembly efficiency.

[0025] Furthermore, the inclination angle of the outer wall 21 is in the range of 78-80°, which can effectively improve the stability of the first sealing ring 4 after it is installed, making it less likely to fall out. In this embodiment, the inclination angle of the outer wall is preferably 79°.

[0026] Furthermore, the depth of the sealing ring groove 2 is set to 1.2 mm, and the span of the bottom surface 22 between the inner wall 23 and the outer wall 21 is 2.4 mm. Correspondingly, the wire diameter of the first sealing ring 4 is 1.5 mm. After the first sealing ring 4 is installed in the sealing ring groove 2, the radial elongation of the first sealing ring 4 is 1% to 3.5%, which can effectively prevent the risk of the first sealing ring 4 being extruded.

[0027] Furthermore, the first sealing ring 4 is made of a ring body with a hardness of 90 MPa. When subjected to a pressure of 20 MPa, the filling rate of the sealing ring groove 2 is 71% to 89%, which can effectively prevent the risk of the first sealing ring 4 being squeezed out under pressure after being installed in the sealing ring groove 2.

[0028] Furthermore, to ensure the sealing between the flow valve core and the shock absorber after connection, the outer peripheral surface 3 of the body 1 is inclined. Correspondingly, the opening where the body 1 passes through the oil reservoir 6 is set as an inclined surface. During the pressurization process, the outer peripheral surface 3 fits against the oil reservoir 6 through the inclined surface, improving the sealing effect at that point.

[0029] Furthermore, an annular groove 31 is provided on the outer peripheral surface 3 at the position where it abuts the opening of the oil reservoir 6. During assembly, a second sealing ring is installed in the annular groove 31 to further ensure the sealing effect between the flow valve core and the damper body.

[0030] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the technical solution of the present invention, or the direct application of the concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A dovetail structure type flow passage spool which is applied to a solenoid valve shock absorber, which is provided at a connection portion of a solenoid valve and a main body of a shock absorber, and which includes a body, a seal ring groove provided at an end portion of the body, and a first seal ring which is embedded in the seal ring groove, characterized in that, The sealing ring groove comprises a bottom surface, an inner side wall close to the center of the body, and an outer side wall, which is arranged obliquely from the bottom surface towards the center axis of the body, and the outer diameter of the first sealing ring is smaller than the minimum inner diameter of the outer side wall.

2. A flow-through spool valve of dovetail slot construction according to claim 1, characterized in that The oblique angle of the outer side wall ranges from 78 to 80 degrees.

3. A flow-through spool valve of dovetail slot construction according to claim 2, wherein, The depth of the sealing ring groove is 1.2 mm, and the span of the bottom surface between the inner side wall and the outer side wall is 2.4 mm.

4. A flow-through spool valve of dovetail slot construction according to claim 3, wherein, The linear diameter of the first sealing ring is 1.5 mm.

5. The dovetail structure flow control spool according to claim 1, wherein, The outer peripheral surface of the body connected with the oil reservoir cylinder of the shock absorber is arranged obliquely.

6. A flow-through spool valve of dovetail slot construction according to claim 5, wherein, An annular groove is arranged on the outer peripheral surface at the position abutting against the oil reservoir cylinder, for connecting a second sealing ring.

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