Damping valve device and shock absorber

Abstract

The utility model provides a damping valve device and a shock absorber. The damping valve device comprises a valve body; the valve sleeve is connected with the valve body. The first valve element is located in the valve sleeve and is configured to reciprocate in the axis direction of the valve sleeve. At least part of the second valve element is located in the valve sleeve, and the second valve element and the first valve element are oppositely arranged in the axis direction; the valve seat is arranged opposite to the valve main body in the axial direction; the valve sleeve is configured to support the first valve element, the valve sleeve is directly connected with the valve seat, and the valve sleeve is of an integrated structure. The valve sleeve in the damping valve device supports the first valve element and is directly connected with the valve seat at the same time, and the valve sleeve is of an integrated structure, so that the number of parts in the damping valve device can be reduced, and accumulative errors of assembling the parts are reduced.

Description

Technical Field

[0001] At least one embodiment of the utility model relates to a damping valve device and a shock absorber. Background Art

[0002] The damping valve is one of the core components of the automobile shock absorber. The main function of the shock absorber is to absorb and dissipate the impact energy caused by uneven road surface, ensuring stable driving and comfortable riding. However, the damping valve has many parts, making it difficult to reduce the difficulty of assembly. Utility Model Content

[0003] At least one embodiment of the utility model provides a damping valve device and a shock absorber.

[0004] At least one embodiment of the utility model provides a damping valve device, comprising: a valve body; a valve sleeve connected to the valve body; a first valve core located in the valve sleeve and configured to reciprocate along the axial direction of the valve sleeve; a second valve core at least partially located in the valve sleeve and arranged opposite to the first valve core in the axial direction; a valve seat arranged opposite to the valve body along the axial direction; wherein the valve sleeve is configured to support the first valve core, the valve sleeve is directly connected to the valve seat, and the valve sleeve is an integral structure.

[0005] For example, according to at least one embodiment of the present invention, an upper portion of the valve sleeve is embedded in the valve body, and a lower portion of the valve sleeve is exposed from the valve body.

[0006] For example, according to at least one embodiment of the present invention, the valve sleeve includes a cylindrical main body portion and a support portion which divides the accommodating cavity of the cylindrical main body portion into two parts along the axial direction; the valve body is sleeved outside the cylindrical main body portion and has an interference fit with the cylindrical main body portion, and one end of the cylindrical main body portion away from the valve body extends along the axial direction to be connected with the valve seat; the support portion is provided with a guide hole which passes through the support portion along the axial direction, and the guide hole and the cylindrical main body portion are configured to jointly support the first valve core and guide the movement of the first valve core.

[0007] For example, according to at least one embodiment of the present invention, the accommodating chamber includes a first chamber located between the support portion and the valve seat and a second chamber located between the support portion and the valve body; the first valve core is configured to reciprocate along the axial direction in the first chamber, and the second valve core is configured to reciprocate along the axial direction in the second chamber.

[0008] For example, according to at least one embodiment of the present invention, a first channel is opened in the cylindrical main body; the first channel connects the second cavity and the external space.

[0009] For example, according to at least one embodiment of the present invention, at least a portion of the first channel extends along the axial direction.

[0010] For example, according to at least one embodiment of the present invention, a plurality of first channels are provided, and the plurality of first channels are spaced apart in the circumferential direction of the cylindrical body.

[0011] For example, according to at least one embodiment of the present invention, the first valve core includes a first part and a second part connected to each other; the first part is configured to slide with the cylindrical body, and the second part extends along the axial direction to extend into the guide hole.

[0012] For example, according to at least one embodiment of the present invention, the second portion is provided with a flow channel connecting the first cavity and the second cavity.

[0013] For example, according to at least one embodiment of the present invention, the flow channel includes a first sub-flow channel and a second sub-flow channel connected to each other; the first sub-flow channel extends in a direction perpendicular to the axial direction, and the second sub-flow channel extends in the axial direction; the first sub-flow channel is configured to be connected to the first cavity, and the second sub-flow channel is configured to be connected to the second cavity.

[0014] For example, according to at least one embodiment of the present invention, the first channel includes a first opening and a second opening that are relatively arranged in the axial direction; the first opening is connected to the external space, and the second opening is connected to the second cavity; there is a gap in the axial direction between the plane where the first opening is located and the valve seat, and there is a gap in the axial direction between the plane where the second opening is located and the valve body.

[0015] For example, according to at least one embodiment of the present invention, a second channel is provided on the valve seat, and the second channel is configured to connect the first channel and the external space; wherein, on a reference plane perpendicular to the axial direction, the area of ​​the orthographic projection of the first channel is not greater than the area of ​​the orthographic projection of the second channel.

[0016] For example, according to at least one embodiment of the present invention, the valve sleeve is sleeved outside the valve seat.

[0017] For example, according to at least one embodiment of the present invention, the valve body includes an electromagnetic actuating portion drivingly connected to the second valve core; the electromagnetic actuating portion is configured to drive the second valve core to reciprocate in the axial direction.

[0018] At least one embodiment of the utility model provides a shock absorber, comprising the damping valve device described in any of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present utility model, rather than limiting the present utility model.

[0020] Figure 1 A schematic structural diagram of a damping valve device provided in an example of at least one embodiment of the utility model;

[0021] Figure 2 for Figure 1 A local enlarged schematic diagram of point A shown;

[0022] Figure 3 A schematic structural diagram of a damping valve device provided in an example of at least one embodiment of the utility model;

[0023] Figure 4 Schematic diagram of the orthographic projection of the first channel and the orthographic projection of the second channel on the reference plane. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Unless otherwise defined, the technical terms or scientific terms used in this utility model shall have the usual meanings understood by people with ordinary skills in the field to which this utility model belongs. The words "first", "second" and similar words used in this utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. The words "include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0026] The features such as "vertical", "parallel" and "same" used in the present invention include the features such as "vertical", "parallel" and "same" in a strict sense, as well as the situations where "approximately vertical", "approximately parallel" and "approximately the same" contain certain errors, taking into account the errors associated with the measurement of specific quantities (that is, the limitations of the measurement system), and are expressed within the acceptable deviation range for specific values ​​determined by ordinary technicians in this field. The "center" in the embodiment of the present invention can include a position strictly located at the geometric center and a position approximately centered in a small area around the geometric center. For example, "approximately" can mean within one or more standard deviations, or within 10% or 5% of the value.

[0027] The damping valve in the automobile shock absorber is one of the core components to ensure the working performance of the automobile suspension system. The damping valve helps the vehicle to better cope with different road conditions and improve driving safety and comfort by adjusting the flow characteristics of the hydraulic oil. During the study, the inventor of the present application found that the damping valve includes parts such as the valve body, valve core, spring, and sealing ring. Due to the limitations of the manufacturing process, it is difficult to improve the accuracy of a single part. And because there are many parts in the damping valve, it is difficult to reduce the total error after assembling the parts.

[0028] At least one embodiment of the utility model provides a damping valve device, comprising: a valve body; a valve sleeve connected to the valve body; a first valve core located in the valve sleeve and configured to reciprocate along the axial direction of the valve sleeve; a second valve core at least partially located in the valve sleeve and arranged opposite to the first valve core in the axial direction; a valve seat arranged opposite to the valve body along the axial direction; wherein the valve sleeve is configured to support the first valve core, the valve sleeve is directly connected to the valve seat, and the valve sleeve is an integral structure.

[0029] At least one embodiment of the utility model provides a shock absorber, comprising the damping valve device.

[0030] At least one embodiment of the utility model provides a damping valve device and a shock absorber, in which a valve sleeve in the damping valve device supports the first valve core and is directly connected to the valve seat, and the valve sleeve is an integrated structure, thereby reducing the number of parts in the damping valve device, simplifying the assembly process, reducing the cumulative error of assembly parts, and improving product yield.

[0031] The damping valve device and the shock absorber are described below with reference to the accompanying drawings and through some embodiments.

[0032] Figure 1 The present invention is a schematic structural diagram of a damping valve device provided in an example of at least one embodiment of the present invention. Figure 2 for Figure 1 A local enlarged schematic diagram is shown.

[0033] refer to Figure 1 and Figure 2 At least one embodiment of the utility model provides a damping valve device, comprising: a valve body 10, a valve sleeve 100, a first valve core 200, a second valve core 300 and a valve seat 400. The valve sleeve 100 is connected to the valve body 10. For example, the valve sleeve 100 is connected to the valve body 10 along the axial direction Y of the valve sleeve 100. The first valve core 200 is located in the valve sleeve 100 and is configured to reciprocate along the axial direction Y of the valve sleeve 100. For example, the first valve core 200 is located in the space surrounded by the valve sleeve 100. The second valve core 300 is at least partially located in the valve sleeve 100 and is arranged opposite to the first valve core 200 in the axial direction Y. For example, part of the structure of the second valve core 300 is located in the space surrounded by the valve sleeve 100, and another part of the second valve core 300 is located outside the space surrounded by the valve sleeve 100. The valve seat 400 is arranged opposite to the valve body 10 along the axial direction Y. The valve sleeve 100 is configured to support the first valve core 200 , the valve sleeve 100 is directly connected to the valve seat 400 , and the valve sleeve 100 is an integral structure.

[0034] refer to Figure 1 and Figure 2 The valve sleeve 100 in the damping valve device supports the first valve core 200 and is directly connected to the valve seat 400, and the valve sleeve 100 is an integrated structure, which can reduce the number of parts in the damping valve device, simplify the assembly process, reduce the cumulative error of assembly parts, and improve product yield.

[0035] refer to Figure 1 and Figure 2 In some examples, the valve sleeve 100 is sleeved outside the valve seat 400. For example, the valve sleeve can be riveted or interference fit with the valve seat. As a result, there is no need to perform additional processing on the outer surface of the valve seat 400 or the inner surface of the valve sleeve 100 (for example, no additional tapping is required), which simplifies the manufacturing process and can also prevent loosening due to wear. Of course, the valve sleeve can also be connected to the valve seat by threading or other methods, and the utility model is not limited to this.

[0036] refer to Figure 1 and Figure 2In some examples, the upper portion of the valve sleeve 100 is embedded in the valve body 10, and the lower portion of the valve sleeve 100 is exposed from the valve body 10. For example, the upper portion of the valve sleeve 100 is an end of the valve sleeve 100 close to the valve body 10, and the lower portion of the valve sleeve 100 is an end of the valve sleeve 100 close to the valve seat 400. The upper portion of the valve sleeve 100 is embedded in the valve body 10 to be fixedly connected to the valve body 10. The lower portion of the valve sleeve 100 is exposed from the valve body 10 to accommodate at least part of the valve seat 400 inside the valve sleeve 100. In addition, the lower portion of the valve sleeve 100 can reduce the size of the valve body 10 in the axial direction Y, and there is no need to provide other housings to support the valve seat 400, thereby saving costs.

[0037] refer to Figure 1 and Figure 2 For example, the outer diameter of the lower portion of the valve sleeve 100 is greater than the outer diameter of the upper portion of the valve sleeve 100, so that a step portion is formed at the connection between the lower portion of the valve sleeve 100 and the upper portion of the valve sleeve 100. When the upper portion of the valve sleeve 100 is embedded in the valve body 10 for connection, the step portion can make the fixed connection between the valve sleeve 100 and the valve body 10 more reliable.

[0038] refer to Figure 1 and Figure 2 In some examples, the valve sleeve 100 includes a cylindrical body portion 110 and a support portion 120 that divides the accommodating chamber 111 of the cylindrical body portion 110 into two parts along the axial direction Y. For example, the support portion 120 divides the accommodating chamber 111 into a chamber near the upper part of the valve sleeve 100 and a chamber near the lower part of the valve sleeve 100. The valve body 10 is sleeved outside the cylindrical body portion 110 and has an interference fit with the cylindrical body portion 110. One end of the cylindrical body portion 110 away from the valve body 10 extends along the axial direction Y to connect with the valve seat 400. For example, one end of the cylindrical body portion 110 away from the valve body 10 is exposed from the valve body 10.

[0039] refer to Figure 1 and Figure 2 In some examples, the support portion 120 is provided with a guide hole 121 penetrating the support portion 120 along the axial direction Y, and the guide hole 121 and the cylindrical body portion 110 are configured to jointly support the first valve core 200 and guide the movement of the first valve core 200. For example, the axis of the guide hole 121 coincides with the axis of the cylindrical body portion 110. For example, the first valve core 200 and the guide hole 121 are clearance-matched, so that the first valve core 200 is guided by the guide hole 121 to prevent the movement of the first valve core 200 from being deviated.

[0040] refer to Figure 1 and Figure 2In some examples, the accommodating chamber 111 includes a first chamber 1111 located between the support portion 120 and the valve seat 400 and a second chamber 1112 located between the support portion 120 and the valve body 10. The first valve core 200 is configured to reciprocate along the axial direction Y in the first chamber 1111, and the second valve core 300 is configured to reciprocate along the axial direction Y in the second chamber 1112. For example, during the movement of the first valve core and the second valve core, part of the structure of the first valve core may also be located in the second chamber, and the utility model does not limit this. For example, the guide hole 121 is connected between the first chamber 1111 and the second chamber 1112. For example, the first chamber 1111 is a chamber close to the lower part of the valve sleeve 100, and the second chamber 1112 is a chamber close to the upper part of the valve sleeve 100.

[0041] refer to Figure 1 and Figure 2 In some examples, the first valve core 200 includes a first portion 210 and a second portion 220 connected to each other, and the first portion 210 is configured to slide with the cylindrical body portion 110, so that the first portion 210 can be guided by the cylindrical body portion 110. For example, a sealing ring 230 can be sleeved on the first portion 210, so that the first portion 210 divides the accommodating cavity 111 in the cylindrical body portion 110 into two chambers. The second portion 220 extends along the axial direction Y to extend into the guide hole 121, so that the second portion 220 can be guided by the guide hole 121. For example, the second portion 220 is clearance-matched with the guide hole 121 to be guided by the guide hole 121.

[0042] refer to Figure 1 and Figure 2 For example, the first part 210 divides the first chamber 1111 into a first sub-chamber 111a and a second sub-chamber 111b, and a through hole 211 is provided on the first part 210, so as to connect the first sub-chamber 111a and the second sub-chamber 111b through the through hole 211. The first sub-chamber 111a is located between the first part 210 and the support part 120, and the second sub-chamber 111b is located between the first part 210 and the valve seat 400. For example, the through hole 211 extends along the axial direction Y. For example, the damping medium can flow from the second sub-chamber 111b into the first sub-chamber 111a through the through hole 211. For example, the position of the first valve core 200 can be adjusted by the pressure of the damping medium, and the chamber size of the first sub-chamber 111a can be adjusted by the pressure of the damping medium, so as to change the damping force of the damping valve device.

[0043] refer to Figure 1 and Figure 2In some examples, the second part 220 is provided with a flow channel 221 connecting the first cavity 1111 and the second cavity 1112. For example, the damping medium can flow from the first cavity 1111 to the second cavity 1112 through the flow channel 221 on the second part 220. For example, the flow channel 221 is connected between the first sub-cavity 111a and the second cavity 1112. For example, during the reciprocating motion of the second valve core 300 along the axial direction Y, the distance between the second valve core 300 and the second part 220 can be adjusted, thereby adjusting the damping force.

[0044] refer to Figure 1 and Figure 2 In some examples, the flow channel 221 includes a first sub-flow channel 2211 and a second sub-flow channel 2212 that are connected to each other, the first sub-flow channel 2211 extends in a direction perpendicular to the axial direction Y, and the second sub-flow channel 2212 extends in the axial direction Y. The first sub-flow channel 2211 is configured to communicate with the first cavity 1111, and the second sub-flow channel 2212 is configured to communicate with the second cavity 1112. For example, the second sub-flow channel 2212 is configured to communicate with the first sub-cavity 111a of the first cavity 1111. By providing the first sub-flow channel 2211 extending in a direction perpendicular to the axial direction Y and the second sub-flow channel 2212 extending in the axial direction Y, the flow paths of the first sub-flow channel 2211 and the second sub-flow channel 2212 can be shortened, and the flow efficiency of the damping medium can be improved. For example, the damping medium in the first sub-cavity 111a can enter the second sub-flow channel 2212 through the first sub-flow channel 2211, and flow from the second sub-flow channel 2212 into the second cavity 1112.

[0045] refer to Figure 1 and Figure 2 In some examples, a first channel 101 is provided in the cylindrical body 110. For example, the first channel 101 communicates with the second cavity 1112 and the external space. In combination with some examples described later, the first channel can communicate with the second channel provided on the valve seat, so that the damping medium flows through the first channel, the second cavity and the second channel in sequence, and then is discharged to the external space through the second channel.

[0046] Figure 3 The present invention is a schematic structural diagram of a damping valve device provided in an example of at least one embodiment of the present invention.

[0047] refer to Figure 3 In other examples, the first channel 101 can directly connect the second chamber 1112 and the external space to discharge the damping medium. For example, a portion of the first channel 101 can extend along the axial direction Y, and another portion can extend along a direction intersecting the axial direction Y. For example, the first channel can also extend along a straight line intersecting the axial direction. As long as the damping medium can flow to the external space through the first channel, the utility model is not limited to this.

[0048] refer to Figure 1 and Figure 2 In some examples, at least a portion of the first channel 101 extends along the axial direction Y, thereby shortening the flow path of the first channel 101 and simplifying the manufacturing process of opening the first channel 101.

[0049] refer to Figure 1 and Figure 2 In some examples, the first channel 101 includes a first opening 1011 and a second opening 1012 that are arranged opposite to each other in the axial direction Y, the first opening 1011 is connected to the external space Z, and the second opening 1012 is connected to the second cavity 1112. For example, referring to Figure 3 , the first opening 1011 can be directly connected to the external space Z. For example, in combination with the following examples, refer to Figure 2 , the first opening 1011 can be communicated with the second sub-cavity 111b and with the second channel 401 on the valve seat 400 to communicate with the external space Z. Figure 2 , there is a gap between the plane where the first opening 1011 is located and the valve seat 400 in the axial direction Y, and there is a gap between the plane where the second opening 1012 is located and the valve body 10 in the axial direction Y. For example, the damping medium in the second chamber 1112 can flow into the first opening 1011 through the gap above the second opening 1012 to flow into the first channel 101, and at the same time, the damping medium can flow into the first chamber 1111 from the gap below the first opening 1011. For example, the gap below the first opening 1011 is connected to the second sub-chamber 111b in the first chamber 1111.

[0050] In other examples, the first channel may include a plurality of sub-channels extending in different directions and interconnected. Accordingly, the first opening and the second opening may be opened at different positions, the first opening and the second opening may not be arranged relative to each other in the axial direction, the plane where the first opening is located and the valve seat may not be spaced in the axial direction, and the plane where the second opening is located and the valve seat may not be spaced in the axial direction. The present invention does not impose any restrictions on this. Reference Figure 3 For example, the first opening 1011 of the first channel 101 may be opened on the outer wall of the valve sleeve 100 .

[0051] refer to Figure 1 and Figure 2In some examples, a plurality of first channels 101 are provided, and the plurality of first channels 101 are spaced apart in the circumferential direction of the cylindrical body 110. For example, the damping force in the damping valve device can be set by providing a plurality of first channels 101 and adjusting the opening area provided on the cylindrical body 110. It is understandable that only one first channel can be provided in the cylindrical body, and the damping force can be set by setting the first opening area and the second opening area of ​​the first channel, and the present invention is not limited to this.

[0052] refer to Figure 1 and Figure 2 In some examples, the valve seat 400 is provided with a second channel 401, and the second channel 401 is configured to connect the first channel 101 and the external space Z. For example, the second channel 401 penetrates the valve seat 400 and extends along the axial direction Y. For example, the damping medium can flow out from the first channel 101 to the external space Z through the second channel 401. For example, a gap is provided between the first channel 101 and the second channel 401, that is, a gap between the plane where the first opening 1011 is located and the valve seat 400.

[0053] Figure 4 Schematic diagram of the orthographic projection of the first channel and the orthographic projection of the second channel on the reference plane.

[0054] refer to Figure 1 and Figure 4 , on the reference plane S perpendicular to the axial direction Y, the area of ​​the orthographic projection 101a of the first channel 101 is not greater than the area of ​​the orthographic projection 401a of the second channel 401, so that the damping medium can flow out through the second channel 401 without being throttled. For example, on the reference plane perpendicular to the axial direction, the area of ​​the orthographic projection of the first channel can be smaller than the area of ​​the orthographic projection of the second channel. For example, on the reference plane perpendicular to the axial direction, the area of ​​the orthographic projection of the first channel can be equal to the area of ​​the orthographic projection of the second channel.

[0055] refer to Figure 1 and Figure 2 In some examples, the valve body 10 includes an electromagnetic actuator 500 drivingly connected to the second valve core 300, and the electromagnetic actuator 500 is configured to drive the second valve core 300 to reciprocate in the axial direction Y. For example, the second valve core 300 is a pilot valve. For example, the electromagnetic actuator 500 can drive the second valve core 300 and the first valve core 200 to move closer to each other or away from each other to adjust the damping force in the damping valve device.

[0056] refer to Figure 1 and Figure 2For example, the electromagnetic actuator 500 includes an electromagnetic valve housing 510, a valve armature 520, a valve stem 530 and a coil 540. For example, the electromagnetic valve housing 510 may be an integral structure, or may be formed by connecting a plurality of shell parts to each other. The valve stem 530 is inserted through the valve armature 520, and the valve stem 530 is fixedly connected to the valve armature 520. After the coil 540 is energized, it can apply an electromagnetic driving force to the valve armature 520, driving the valve stem 530 and the second valve core 300 connected to the valve stem 530 to move in the axial direction Y. The outer peripheral wall of the valve armature 520 can be guided by the electromagnetic valve housing 510, so as to be guided in the electromagnetic valve housing 510, so as to prevent the valve stem 530 from deviating during the movement in the axial direction Y. At the same time, both ends of the valve stem 530 may not be subjected to radial support force, so that only the concentricity of the valve armature 520 and the electromagnetic valve housing 510 can be considered, which is conducive to reducing the difficulty of processing and manufacturing parts and improving product yield. Furthermore, there is no need to consider the friction loss between the two ends of the valve stem 530 and its surrounding adjacent components, so there is no need to perform additional hardness treatment on the surface of the valve stem 530, which simplifies the manufacturing process and reduces costs.

[0057] refer to Figure 1 and Figure 2 For example, a friction reducing layer 512 may be provided between the outer peripheral wall of the valve armature 520 and the electromagnetic valve housing 510, so that the valve armature 520 and the electromagnetic valve housing 510 are lubricated by the friction reducing layer 512 to reduce the friction between the valve armature 520 and the electromagnetic valve housing 510. For example, the material of the friction reducing layer 512 may include polytetrafluoroethylene.

[0058] refer to Figure 1 and Figure 2 For example, the valve body 10 further includes a valve cover 600 and an elastic structure 700 sleeved outside the valve stem 530, and the valve cover 600 is connected to the electromagnetic valve housing 510. After the coil 540 is powered off, the valve armature 520 can be reset by the elastic force of the elastic structure 700. For example, the valve cover 600 can be embedded in one end of the electromagnetic valve housing 510 close to the valve seat 400. For example, both ends of the valve stem 530 can be provided with an elastic structure 700.

[0059] refer to Figure 1 and Figure 2 For example, the damping valve device further includes a mounting member 800 , which is disposed between the valve stem 530 and the valve cover 600 , thereby providing a mounting position for the elastic structure 700 through the mounting member 800 , so as to provide an elastic force for resetting to the valve armature 520 through the elastic structure 700 .

[0060] refer to Figure 1 and Figure 2For example, an adjusting member 900 is provided between the valve seat 400 and the valve sleeve 100. By setting the size of the adjusting member 900 in the axial direction Y, the cumulative assembly error of the parts in the damping valve device can be compensated, thereby providing a suitable installation position for the valve seat 400. After the valve seat 400 is installed, when the damping valve device is in the initial state after installation, the valve seat 400 can simultaneously abut against the surfaces of the adjusting member 900 and the first valve core 200, so that the elastic structure 700 is in a suitable stress state, thereby improving the yield of the damping valve device.

[0061] refer to Figure 1 and Figure 2 For example, the inner wall of the valve sleeve 100 is provided with a step portion 130. The step portion 130 includes a positioning surface 131 facing the valve seat 400 in the axial direction Y, and the positioning surface 131 is perpendicular to the axial direction Y and is configured to support the adjusting member 900. By providing the step portion 130, a positioning position can be provided for the adjusting member 900 to support the adjusting member 900 in the axial direction Y.

[0062] At least one embodiment of the utility model provides a shock absorber, comprising a damping valve device of any of the above embodiments.

[0063] Since the damping valve device according to the embodiment of the utility model is used for the above-mentioned shock absorber, it also has corresponding beneficial technical effects, which will not be described in detail here.

[0064] There are a few points to note:

[0065] (1) The drawings of the embodiments of the present invention only relate to the structures related to the embodiments of the present invention, and other structures may refer to the conventional designs.

[0066] (2) In the absence of conflict, features in the same embodiment or in different embodiments of the present invention may be combined with each other.

[0067] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. A damping valve device, characterized in that: include: Valve body; A valve sleeve connected to the valve body; A first valve core is located in the valve sleeve and is configured to reciprocate along the axial direction of the valve sleeve; A second valve core, at least partially located in the valve sleeve and arranged opposite to the first valve core in the axial direction; A valve seat, arranged opposite to the valve body along the axial direction; Wherein, the valve sleeve is configured to support the first valve core, the valve sleeve is directly connected to the valve seat, and the valve sleeve is an integral structure.

2. The damping valve device according to claim 1, characterized in that: An upper portion of the valve sleeve is embedded in the valve body, and a lower portion of the valve sleeve is exposed from the valve body.

3. The damping valve device according to claim 1 or 2, characterized in that: The valve sleeve comprises a cylindrical main body and a support portion which divides the accommodating cavity of the cylindrical main body into two parts along the axial direction; The valve body is sleeved outside the cylindrical body part and is interference fit with the cylindrical body part, and one end of the cylindrical body part away from the valve body extends along the axial direction to be connected with the valve seat; The support portion is provided with a guide hole penetrating the support portion along the axial direction, and the guide hole and the cylindrical body portion are configured to jointly support the first valve core and guide movement of the first valve core.

4. The damping valve device according to claim 3, characterized in that: The accommodating chamber includes a first chamber located between the supporting portion and the valve seat and a second chamber located between the supporting portion and the valve body; The first valve core is configured to reciprocate along the axial direction in the first chamber, and the second valve core is configured to reciprocate along the axial direction in the second chamber.

5. The damping valve device according to claim 4, characterized in that: A first passage is opened in the cylindrical main body; The first passage communicates the second cavity with an external space.

6. The damping valve device according to claim 5, characterized in that: At least a portion of the first channel extends along the axial direction.

7. The damping valve device according to claim 5, characterized in that: A plurality of the first channels are provided, and the plurality of first channels are spaced apart in the circumferential direction of the cylindrical body.

8. The damping valve device according to claim 5, characterized in that: The first valve core includes a first part and a second part connected to each other; The first portion is configured to be slidably matched with the cylindrical main body, and the second portion extends along the axial direction to extend into the guide hole.

9. The damping valve device according to claim 8, characterized in that: The second portion defines a flow channel connecting the first cavity and the second cavity.

10. The damping valve device according to claim 9, characterized in that: The flow channel includes a first sub-flow channel and a second sub-flow channel that are connected to each other; The first sub-channel extends along a direction perpendicular to the axial direction, and the second sub-channel extends along the axial direction; The first sub-channel is configured to communicate with the first cavity, and the second sub-channel is configured to communicate with the second cavity.

11. The damping valve device according to claim 5, characterized in that: The first channel includes a first opening and a second opening which are arranged opposite to each other in the axial direction; the first opening is communicated with the external space, and the second opening is communicated with the second cavity; There is a gap between a plane where the first opening is located and the valve seat in the axial direction, and there is a gap between a plane where the second opening is located and the valve body in the axial direction.

12. The damping valve device according to claim 5, characterized in that: A second channel is formed on the valve seat, and the second channel is configured to communicate with the first channel and an external space; Wherein, on a reference plane perpendicular to the axial direction, an area of ​​an orthographic projection of the first channel is not greater than an area of ​​an orthographic projection of the second channel.

13. The damping valve device according to claim 1 or 2, characterized in that: The valve sleeve is sleeved outside the valve seat.

14. The damping valve device according to claim 1 or 2, characterized in that: The valve body includes an electromagnetic actuating portion drivingly connected to the second valve core; The electromagnetic actuator is configured to drive the second valve element to reciprocate in the axial direction.

15. A shock absorber, characterized in that: The invention comprises the damping valve device according to any one of claims 1 to 14.

Images