CN219827571U - Damping valve device and shock absorber - Google Patents

Abstract

A damping valve device and a shock absorber. The damping valve device comprises a valve sleeve, a first valve core, a second valve core, a valve plate and an elastic element. The first valve core and the second valve core are positioned in the valve sleeve, and the first valve core and the second valve core are oppositely arranged along the axial direction of the valve sleeve; the valve plate is axially positioned between the first valve core and the second valve core; the elastic element is positioned on one side of the valve plate close to the second valve core. The second valve core comprises an annular main body part and a supporting part, the supporting part is provided with a through hole, the elastic element comprises a first end and a second end which are opposite to each other along the axial direction, the first end is in contact fit with the valve sheet, the second end is in contact fit with the supporting part, the valve sheet is configured to move along the axial direction relative to the second valve core under the action of the elastic element so as to form a circulation channel between the valve sheet and the second valve core, and the first valve core is configured to move along the axial direction relative to the second valve core so as to adjust the size of the circulation channel. Therefore, the damping valve device has a simpler structure, is convenient to process and can promote the generalization of the damping valve device.

Description

Damping valve device and shock absorber

Technical Field

Embodiments of the present utility model relate to a damping valve device and a shock absorber.

Background

In an automobile suspension system, since the spring also has a reciprocating motion when filtering road vibration, in order to improve the smoothness of running of an automobile, a shock absorber is usually installed in the suspension system to suppress the vibration of the spring when rebounding after the shock absorption. Therefore, the shock absorber can reduce the vibration of the frame and the vehicle body to improve the running smoothness of the vehicle.

On the other hand, with the rapid development of the automobile industry and the continuous improvement of the living standard of people, the requirements of people on the riding comfort of automobiles are higher and higher, the shock absorber with single damping value can not meet the requirements of people, and the shock absorber with adjustable damping value is generated.

Disclosure of Invention

In order to meet different road conditions and driving modes and improve driving comfort experience, an automobile shock absorber is generally designed to be adjustable in damping size, and the damping valve device is simpler in structure, convenient to process and assemble, low in cost and capable of improving universality.

The embodiment of the utility model provides a damping valve device and a shock absorber.

At least one embodiment of the present utility model provides a damping valve device comprising a valve housing, a first valve core positioned within the valve housing; the second valve core is positioned in the valve sleeve, and the first valve core and the second valve core are oppositely arranged along the axial direction of the valve sleeve; a valve plate located between the first valve core and the second valve core in the axial direction of the valve sleeve; and an elastic element positioned on one side of the valve plate, which is close to the second valve core, wherein the second valve core comprises an annular main body part and a supporting part positioned in the annular main body part, the supporting part is provided with a through hole penetrating through the supporting part along the axial direction, the elastic element comprises a first end and a second end which are opposite to each other along the axial direction, the first end is in contact fit with the valve plate, the second end is in contact fit with the supporting part, the valve plate is configured to move along the axial direction relative to the second valve core under the action of the elastic element so as to form a circulation channel between the valve plate and the second valve core, and the first valve core is configured to move along the axial direction relative to the second valve core so as to adjust the size of the circulation channel.

For example, in the damping valve device provided in an embodiment of the present utility model, the valve plate is configured to be fixed in the axial direction with respect to the first valve element by the elastic member.

For example, in the damping valve device provided in an embodiment of the present utility model, the valve plate includes a disk shape.

For example, in the damping valve device provided by an embodiment of the present utility model, a side of the first valve element, which is close to the valve plate, includes a first end surface, a shape of the first end surface includes an annular shape, a side of the second valve element, which is close to the valve plate, includes a second end surface, a shape of the second end surface includes an annular shape, an orthographic projection of the first end surface on a reference plane at least partially falls within an orthographic projection of the valve plate on the reference plane, and an orthographic projection of the second end surface on the reference plane at least partially falls within an orthographic projection of the valve plate on the reference plane, and the reference plane is perpendicular to the axial direction.

For example, in the damping valve device provided in an embodiment of the present utility model, a radial dimension of the valve plate is greater than or equal to a radial dimension of the first end surface, and a radial dimension of the valve plate is greater than or equal to a radial dimension of the second end surface.

For example, in the damping valve device provided by an embodiment of the present utility model, the first valve core includes a first guide shaft, the first guide shaft extends toward the second valve core along the axial direction, and the valve plate and the elastic element are sleeved on the first guide shaft.

For example, in the damping valve device according to an embodiment of the present utility model, the support portion of the second valve element is provided with a guide hole extending in the axial direction, and the guide hole cooperates with the first guide shaft to guide the movement of the first guide shaft in the axial direction.

For example, in the damping valve device provided by an embodiment of the present utility model, a second guide shaft is disposed on the supporting portion of the second valve element, the second guide shaft extends toward the first valve element along the axial direction, and the valve plate and the elastic element are sleeved on the second guide shaft.

For example, in the damping valve device provided by an embodiment of the present utility model, an end portion of the second guide shaft, which is close to the first valve core, is further provided with a blocking structure configured to block the valve plate from falling off from the second guide shaft.

For example, in one embodiment of the present utility model, a damping valve device is provided wherein the valve housing includes a flow bore extending through an outer sidewall and an inner sidewall of the valve housing, the flow bore at least partially overlapping the valve plate in a radial direction of the valve housing.

For example, the damping valve device provided in an embodiment of the present utility model further includes: the third valve core is located on one side of the first valve core, which is far away from the second valve core, in the axial direction and is configured to move along the axial direction relative to the first valve core, the first valve core comprises a first body portion and a second body portion, the second body portion is closer to the second valve core than the first body portion, the outer diameter of the second body portion is larger than that of the first body portion, a portion, which is not covered by the first body portion, of the second body portion is close to the surface of the third valve core, the side surface of the first body portion and the inner wall of the valve sleeve form a containing cavity, the first body portion comprises a pressure relief channel, a first port of the pressure relief channel faces the third valve core, the third valve core is configured to cover or open the first port, a second port of the pressure relief channel is communicated with the containing cavity, the second body portion comprises a channel, the channel penetrates through the second body portion, and the shutoff channel is communicated with the shutoff channel through the shutoff channel.

For example, in the damping valve device provided in an embodiment of the present utility model, the shut-off channel penetrates through the interior of the second body portion.

For example, in the damping valve device provided in an embodiment of the present utility model, the radial dimensions of the opposite ends of the shut-off passage are greater than or equal to the radial dimensions of at least a portion of the shut-off passage located between the ends.

For example, the damping valve device provided in an embodiment of the present utility model further includes: the control unit is positioned at one side of the first valve core away from the second valve core, the first valve core is in sliding fit with the valve sleeve along the axial direction, the second valve core is fixedly connected with the valve sleeve, and the control unit is connected with the first valve core so as to control the first valve core to move along the axial direction relative to the second valve core.

At least one embodiment of the present utility model provides a shock absorber, comprising: a housing, and a damper valve arrangement of any one of the preceding claims, the damper valve arrangement being located within the housing.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following brief description of the drawings of the embodiments will make it apparent that the drawings in the following description relate only to some embodiments of the present utility model and are not limiting of the present utility model.

FIG. 1 is a schematic cross-sectional view of a damping valve device according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a partial cross-sectional structure of the damping valve apparatus shown in FIG. 1;

FIG. 3 is a schematic top view of the second valve core shown in FIG. 1;

FIG. 4 is a schematic cross-sectional view of the second valve core shown in FIG. 3 along line M-M;

FIG. 5 is a schematic cross-sectional view of a damping valve device according to an embodiment of the present utility model;

FIG. 6 is a schematic view of a partial cross-sectional structure of the damping valve apparatus shown in FIG. 5; and

fig. 7 is a schematic cross-sectional view of a shock absorber according to an embodiment of the present utility model.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments 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. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present utility model fall within the protection scope of the present utility model.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

Unless otherwise defined, features such as "parallel", "perpendicular" and "identical" as used in the embodiments of the present utility model include cases where "parallel", "perpendicular", "identical" and the like are in strict sense, and cases where "substantially parallel", "substantially perpendicular", "substantially identical" and the like include certain errors. For example, the above-described "approximately" may indicate that the difference of the compared objects is within 10%, or 5%, of the average value of the compared objects. Where in the following the number of an embodiment of the utility model is not specifically indicated, it means that the element or component may be one or more or it may be understood as at least one. "at least one" means one or more, and "a plurality" means at least two.

The damping valve device is arranged in the shell of the shock absorber and divides the shell of the shock absorber into two working cavities, and the damping valve device realizes the adjustable damping size of the shock absorber by adjusting the flow of damping medium in the two working cavities, so that different road conditions and driving modes can be met, and the driving comfort experience is improved.

The embodiment of the utility model provides a damping valve device and a shock absorber. The damping valve device comprises a valve sleeve, a first valve core, a second valve core, a valve plate and an elastic element. The first valve core and the second valve core are positioned in the valve sleeve, and the first valve core and the second valve core are oppositely arranged along the axial direction of the valve sleeve; the valve plate is positioned between the first valve core and the second valve core in the axial direction of the valve sleeve; the elastic element is positioned on one side of the valve plate close to the second valve core. The second valve core comprises an annular main body part and a supporting part positioned in the annular main body part, the supporting part is provided with a through hole penetrating through the supporting part along the axial direction, the elastic element comprises a first end and a second end which are opposite to each other along the axial direction, the first end is in contact fit with the valve plate, the second end is in contact fit with the supporting part of the second valve core, the valve plate is configured to move along the axial direction relative to the second valve core under the action of the elastic element so as to form a circulation channel between the valve plate and the second valve core, and the first valve core is configured to move along the axial direction relative to the second valve core so as to adjust the size of the circulation channel.

In the damping valve device provided by the embodiment of the utility model, the valve plate and the second valve core move along the axial direction, so that a circulation channel is formed between the valve plate and the second valve core, and damping medium can circulate in the through hole of the second valve core and the circulation channel. The first valve core and the second valve core move along the axial direction, so that the size of the circulation channel can be adjusted, and the damping size of the damping valve device can be adjusted.

The damping valve device is characterized in that the elastic element is arranged between the valve plate and the second valve core, the elastic element is not required to be attached to or matched with the first valve core, so that the first valve core is not required to be designed to be matched with the elastic element in structural characteristics, the structural design of the first valve core is simpler, the manufacturing cost of the first valve core is reduced, and the yield of the first valve core is improved. In addition, as the first valve core does not need to design structural features (such as grooves, limiting structures or fixing structures) matched with the elastic element, the damping valve device with different damping performances can be changed by only changing structural features or parameters of the spring, the valve plate or the second valve core, and the like, and the first valve core does not need to be changed, so that the universality of the first valve core can be improved, the design cost and the manufacturing cost can be reduced, and the cost of the damping valve device can be further reduced.

The circulation channel of the damping valve device is positioned between the valve plate and the second valve core, so that damping medium in the annular main body part of the second valve core can directly act on the valve plate, and the opening force between the valve plate and the second valve core from attaching to detaching can be directly adjusted by adjusting the radial dimension of the end part of the second valve core, which is close to the valve plate, thereby more conveniently designing or adjusting the damping performance of the damping valve device.

Hereinafter, a damping valve device and a shock absorber according to an embodiment of the present utility model will be described in detail with reference to the accompanying drawings.

An embodiment of the present utility model provides a damping valve device and a shock absorber. FIG. 1 is a schematic cross-sectional view of a damping valve device according to an embodiment of the present utility model; FIG. 2 is a schematic view of a partial cross-sectional structure of the damping valve apparatus shown in FIG. 1; FIG. 3 is a schematic top view of the second valve core shown in FIG. 1; fig. 4 is a schematic cross-sectional view of the second valve core shown in fig. 3 along line M-M. As shown in fig. 1 to 4, the damping valve device includes a valve housing 110, a first valve body 120, a second valve body 130, a valve sheet 140, and an elastic member 150. The first valve core 120 and the second valve core 130 are positioned in the valve sleeve 110, and the first valve core 120 and the second valve core 130 are oppositely arranged along the axial direction X of the valve sleeve 110; valve plate 140 is located between first valve element 120 and second valve element 130 in axial direction X of valve housing 110; the elastic member 150 is located at a side of the valve plate 140 adjacent to the second valve core 130. The second valve body 130 includes an annular body 131 and a support 132 disposed in the annular body 131, the support 132 is provided with a through hole 1321 penetrating the support 132 in the axial direction X, the elastic member 150 includes a first end 151 and a second end 152 opposite to each other in the axial direction X, the first end 151 is in contact engagement with the valve plate 140, the second end 152 is in contact engagement with the support 132 of the second valve body 130, the valve plate 140 is configured to move relative to the second valve body 130 in the axial direction X under the action of the elastic member 150 to form a flow passage 160 between the valve plate 140 and the second valve body 130, and the first valve body 120 is configured to move relative to the second valve body 130 in the axial direction X to adjust the size of the flow passage 160.

In the damping valve device provided by the embodiment of the utility model, the valve plate 140 and the second valve core 130 move along the axial direction X, so that the circulation channel 160 is formed between the valve plate 140 and the second valve core 130, and the damping medium can circulate in the through hole 1321 of the second valve core 130 and the circulation channel 160. By moving the first valve core 120 and the second valve core 130 along the axial direction X, the size of the flow channel 160 can be adjusted, so that the damping size of the damping valve device can be adjusted.

For example, the valve plate 140 and the second valve element 130 may have a distance D along the axial direction X, the distance D may form the flow channel 160 between the first valve element 120 and the second valve element 130, and the damping medium may flow through the flow channel 160 formed by the through hole 1321 of the second valve element 130 and the distance D. By moving the first valve element 120 and the second valve element 130 along the axial direction X, the distance D between the valve plate 140 and the second valve element 130 changes, and the size of the flow channel 160 formed by the distance D also changes, so that the damping size of the damping valve device can be adjusted.

For example, when the valve sheet 140 is respectively bonded to the first valve element 120 and the second valve element 130 in the axial direction X, the size of the flow channel 160 is zero, the flow channel 160 cannot circulate the damping medium, and the damping force of the damping valve device is maximized. For example, when the distance between the valve plate 140 and the second valve body 130 in the axial direction X is maximum, the size of the flow passage 160 is maximum, and the damping force of the damping valve device is minimum.

In the damping valve device provided by the embodiment of the utility model, the elastic element 150 is arranged between the valve plate 140 and the second valve core 130, and the elastic element 150 does not need to be attached to or matched with the first valve core 120, so that the first valve core 120 does not need to be designed with the structural characteristics matched with the elastic element 150, and further the structural design of the first valve core 120 can be simpler, the manufacturing cost of the first valve core 120 is reduced, and the yield of the first valve core 120 is improved. In addition, the first valve core 120 does not need to design structural features matched with the elastic element 150, and for damping valve devices with different damping performances, the damping performance can be changed by only changing structural features or parameters of the spring, the valve plate 140 or the second valve core 130, and the like, without changing the first valve core 120, so that the universalization of the first valve core 120 can be improved, the design cost and the manufacturing cost can be reduced, and the cost of the damping valve device can be further reduced.

For example, when the elastic member 150 is disposed between the first valve core 120 and the valve plate 140, the end surface of the first valve core 120, with which the elastic member 150 is mated, needs to be designed with a mating structure of the elastic member 150, for example, the mating structure is a groove, in which the elastic member 150 is disposed, and the design of the groove increases the design cost and manufacturing cost of the first valve core 120. In addition, when the size or model of the elastic element 150 is changed to adjust the damping parameter of the damping valve device, the structure of the first valve element 120 that cooperates with the elastic element 150 needs to be correspondingly changed, which is not beneficial to generalization of the first valve element 120 and increases the cost of the damping valve device.

In some examples, as shown in fig. 1 and 2, the valve plate 140 is configured to be fixed in the axial direction X relative to the first valve spool 120 by the elastic element 150. Therefore, the stability of the size of the flow channel 160 can be improved, and the change of the size of the flow channel 160 caused by the movement of the valve plate 140 relative to the first valve core 120 in the axial direction X can be avoided, so that the stability of the damping performance of the damping valve device can be improved. In addition, the fixing of the valve plate 140 and the first valve core 120 in the axial direction X can also avoid the abnormal sound problem of the damping valve device, and can also reduce the adverse effect of the bump caused by the relative movement of the valve plate 140 and the first valve core 120 on the durability of the damping valve device.

In some examples, as shown in fig. 1 and 2, the shape of valve sheet 140 includes a disk shape. For example, the valve sheet 140 includes a disk shape in shape. The shape of the valve sheet 140 is not limited in the embodiment of the present utility model.

In some examples, the resilient element 150 may be a spring, coil spring, torsion spring, or the like. Of course, the form and structure of the elastic member 150 are not limited by the embodiment of the present utility model.

In some examples, the contact fit of the first end 151 and the second end 152 of the elastic element 150 may be by way of fitting, hooking, clamping, etc., and embodiments of the present utility model are not limited in this respect.

In some examples, as shown in fig. 1 and 2, a side of the first spool 120 proximate the valve plate 140 includes a first end surface 121. For example, the shape of the first end surface 121 includes a ring shape. The side of the second spool 130 adjacent to the valve plate 140 includes a second end face 133. For example, the shape of the second end face 133 includes a ring shape. The orthographic projection of the first end surface 121 on the reference plane P at least partially falls within the orthographic projection of the valve sheet 140 on the reference plane P, and the orthographic projection of the second end surface 133 on the reference plane P at least partially falls within the orthographic projection of the valve sheet 140 on the reference plane P, which is perpendicular to the axial X direction. Thus, not only can the flow channel 160 between the valve plate 140 and the second valve element 130 be better designed to match different damping properties. Further, the damping performance of the damping valve device may be adjusted by adjusting the radial dimension of the first end surface 121 or the radial dimension of the valve plate 140 or the radial dimension of the second end surface 133 of the second valve body 130.

In some examples, as shown in fig. 1 and 2, the orthographic projection of the first end surface 121 on the reference plane P falls entirely within the orthographic projection of the valve sheet 140 on the reference plane P, and the orthographic projection of the second end surface 133 on the reference plane P falls entirely within the orthographic projection of the valve sheet 140 on the reference plane P.

In some examples, as shown in fig. 1 and 2, the radial dimension of valve sheet 140 is greater than or equal to the radial dimension of first end surface 121 and the radial dimension of valve sheet 140 is greater than or equal to the radial dimension of second end surface 133. For example, when the radial dimension of the valve plate 140 is relatively large, the contact area between the damping medium and the valve plate 140 can be increased, and then the adjustable range of the damping force or the design range of the damping force of the damping valve device can be increased, so that the damping valve device can be better suitable for more products.

In some examples, as shown in fig. 1 and 2, the first spool 120 includes a first guide shaft 122, the first guide shaft 122 extends toward the second spool 130 along an axial direction X, and the valve plate 140 and the elastic member 150 are sleeved on the first guide shaft 122. Accordingly, a better and more stable assembly of the valve sheet 140 and the elastic member 150 may be achieved, and movement or shaking of the valve sheet 140 and the elastic member 150 in a radial direction thereof may be restricted, so that the damping valve device may have more stable damping performance.

In some examples, as shown in fig. 1 to 4, the support portion 132 of the second spool 130 is provided with a guide hole 1322 extending in the axial direction X, and the guide hole 1322 cooperates with the first guide shaft 122 to guide the movement of the first guide shaft 122 in the axial direction X. Therefore, the movement of the first guide shaft 122 along the axial direction X can be further ensured, and it can be ensured that the elastic element 150 can be completely sleeved on the first guide shaft 122, so that the elastic performance of the elastic element 150 is more stable.

FIG. 5 is a schematic cross-sectional view of a damping valve device according to an embodiment of the present utility model; fig. 6 is a schematic view of a partial sectional structure of the damping valve device shown in fig. 5. As shown in fig. 5 and 6, the second guide shaft 134 is provided on the support portion 132 of the second valve body 130, the second guide shaft 134 extends toward the first valve body 120 in the axial direction X, and the valve sheet 140 and the elastic member 150 are sleeved on the second guide shaft 134. Accordingly, a better and more stable assembly of the valve sheet 140 and the elastic member 150 may be achieved, and movement or shaking of the valve sheet 140 and the elastic member 150 in a radial direction thereof may be restricted, so that the damping valve device may have more stable damping performance.

In some examples, as shown in fig. 5 and 6, an end of the second guide shaft 134 near the first valve core 120 is further provided with a blocking structure 135, and the blocking structure 135 is configured to block the valve sheet 140 from falling off the second guide shaft 134. For example, the blocking structure 135 is used to prevent the valve plate 140 from falling off the second guide shaft 134 during assembly. For example, the blocking structure 135 has a dimension in at least one radial direction that is greater than a radial dimension of the valve sheet 140 in the direction for a via hole passing through the second guide shaft 134, so that the valve sheet 140 can be blocked from falling off from the second guide shaft 134. For example, the maximum radial dimension of the blocking structure 135 is greater than the maximum dimension of the valve plate 140 for the passage of the second guide shaft 134. For example, the radial dimension of the blocking structure 135 in either direction is greater than the radial dimension of the valve plate 140 for a via passing through the second guide shaft 134.

In some examples, as shown in fig. 5 and 6, the blocking structure 135 may be a snap spring that is secured to an end of the second pilot shaft 134 proximate the first spool 120. Of course, embodiments of the present utility model are not limited in this regard. For example, the blocking structure 135 may also be a sheet-like structure that is secured to the end of the second pilot shaft 134 adjacent the first spool 120 by a staking process, threading, welding, or a close fit.

In some examples, as shown in fig. 1, 2, 5, and 6, the valve housing 110 includes a flow hole 111, the flow hole 111 penetrating through the outer and inner sidewalls of the valve housing 110, the flow hole 111 at least partially overlapping the valve sheet 140 in a radial direction of the valve housing 110. Thus, the communication between the communication channel 160 and the cavity outside the valve housing 110 can be realized through the communication hole 111, and by adjusting the size of the communication channel 160, the flow speed or the flow rate of the damping medium flowing into the cavity outside the valve housing 110 can be adjusted, or the flow speed or the flow rate of the damping medium flowing from the cavity outside the valve housing 110 can be adjusted, so that the damping performance of the damping valve device can be adjusted. Of course, the size, number, etc. of the flow holes 111 are not limited in the embodiment of the present utility model. For example, the number of the through holes 111 may be 1 or more, for example, when the number of the through holes 111 is plural, the plurality of through holes 111 may be uniformly distributed on the outer circumference of the valve housing 110.

In some examples, as shown in fig. 3 and 4, the number of through holes 1321 of the support portion 132 of the second spool 130 may be one or more. The number and size of the through holes 1321 also affect the flow rate of the damping medium, so that different numbers and sizes of through holes 1321 can be designed according to the requirement of damping performance, and the number and size of the through holes 1321 are not limited in the embodiment of the present utility model. For example, the support 132 may be configured with a through hole 1321, and the through hole 1321 may be symmetrical about the center of the support 132, and of course, may be configured as an offset hole according to the requirement of the damping valve device. For example, the support 132 may be further designed with a plurality of through holes 1321, the plurality of through holes 1321 being symmetrical with respect to the center of the support 132, the plurality of through holes 1321 being uniformly distributed along the circumference of the support 132.

In some examples, as shown in fig. 3 and 4, the second spool 130 is provided with an opening 1361 on an end 136 proximate the first spool 120, the second end face 133 being a surface of the end 136 facing the first spool 120. An opening 1361 extends through the outer and inner sidewalls of the end 136. When the distance D between the valve plate 140 and the second valve element 130 in the axial direction X is zero, the valve plate 140 is attached to the end 136 of the second valve element 130. By providing the opening 1361 in the end 136, the damping medium can circulate through the opening 1361 even if the valve plate 140 is in contact with the end 136 of the second valve element 130. By providing the opening 1361, it is possible to prevent the damping medium from flowing so as to cause excessive pressure when the valve plate 140 is attached to the end 136 of the second valve element 130, thereby damaging the damping valve device.

For example, as shown in fig. 3 and 4, the number of openings 1361 on the end 136 is greater than or equal to 1, e.g., where the number of openings 1361 is multiple, the plurality of openings 1361 may be evenly distributed on the end 136.

For example, as shown in fig. 3 and 4, the opening 1361 has a depth dimension L1 in the axial direction X and an opening dimension L2 in the circumferential direction of the second end face 133. For example, the depth dimension L1 and the opening dimension L2 of the opening 1361 may be adjusted according to the damping performance of the damping valve apparatus and the shock absorber in which it is located, e.g., the depth dimension L1 of the opening 1361 is less than the largest dimension of the spacing D, the opening dimension L2 is less than the largest dimension of the spacing D, e.g., the depth dimension L1 of the opening 1361 is less than 1/3 of the largest dimension of the spacing D, and the opening dimension L2 is less than 1/3 of the largest dimension of the spacing D.

In some examples, the valve plate may also be provided with an opening configured such that, when the distance D between the valve plate and the second valve element in the axial direction X is zero, the damping medium may also circulate through the opening. For example, the opening may be a through hole penetrating the valve plate, or may be a groove. Through setting up this opening, can avoid the valve block to paste with the tip of second case when, damping medium does not circulate and leads to pressure too big, brings the harm to damping valve device.

In some examples, as shown in fig. 1, 2, 5, and 6, the damping valve apparatus further includes a third spool 170. The third spool 170 is located on a side of the first spool 120 remote from the second spool 130 in the axial direction X, and is configured to move in the axial direction X relative to the first spool 120. The first valve core 120 includes a first body portion 123 and a second body portion 124, the second body portion 124 being closer to the second valve core 130 than the first body portion 123, an outer diameter of the second body portion 124 being larger than an outer diameter of the first body portion 123, a portion of the second body portion 124 not covered by the first body portion 123 and being close to a surface of the third valve core 170, a side surface of the first body portion 123, and an inner wall of the valve housing 110 forming a receiving chamber 180. The first body portion 123 includes a relief passage 125, a first port 1251 of the relief passage 125 facing the third valve core 170, the third valve core 170 configured to cover or uncover the first port 1251, and a second port 1252 of the relief passage 125 in communication with the receiving volume 180. The second body portion 124 includes a shut-off passage 126, the shut-off passage 126 penetrating the second body portion 124, and the receiving chamber 180 communicates with the flow hole 111 through the shut-off passage 126.

In the embodiment of the present utility model, when the first valve core 120 moves toward the second valve core 130, the space of the accommodating chamber 180 becomes larger, the pressure in the accommodating chamber 180 becomes smaller, and the damping medium may enter the accommodating chamber 180 through the intercepting passageway 126. When the first valve element 120 moves in a direction away from the second valve element 130, the space of the accommodating chamber 180 becomes smaller, and the pressure in the accommodating chamber 180 becomes larger, thereby affecting the movement of the first valve element 120 in a direction away from the second valve element 130. At this time, the damping medium in the accommodating cavity 180 may act on the third valve core 170 through the pressure relief channel 125, when the pressure in the accommodating cavity 180 increases to the set value, the third valve core 170 moves in a direction away from the pressure relief channel 125 under the pressure of the damping medium in the pressure relief channel 125, at this time, the third valve core 170 opens the first port 1251, and the damping medium in the accommodating cavity 180 may flow out through the first port 1251, so that the pressure in the accommodating cavity 180 decreases, and the first valve core 120 may move in a direction away from the second valve core 130 better and easier. When the first valve core 120 moves away from the second valve core 130, the pressure in the accommodating cavity 180 increases, so that a part of damping medium in the accommodating cavity 180 flows out from the intercepting passageway 126.

In the embodiment of the present utility model, the arrangement of the shutoff channel 126 in the second body portion 124 may make the design of the shutoff channel 126 simpler, and no additional components are required to be added to implement the shutoff channel 126, so that not only the design of the first valve core 120 and the valve housing 110 may be simpler, the processing and manufacturing of the first valve core 120 and the valve housing 110 may be simpler, but also the matching of the first valve core 120 and the valve housing 110 may be simpler, the cost and the assembly difficulty may be reduced, and the assembly efficiency may be improved, so that the structural design, the dimensional chain matching and the stability of the damping performance of the damping valve device may be better.

In some examples, as shown in fig. 1, 2, 5, and 6, the shut-off channel 126 extends through the interior of the second body portion 124. Thus, the design and fabrication of the shut-off channel 126 is simpler. For example, machining the shut-off channel 126 on the side of the second body portion 124 may generally be more complicated than machining the shut-off channel 126 on the interior of the second body portion 124. For example, the shut-off channel 126 has few burrs and low machining difficulty in machining the inside of the second body portion 124.

In some examples, as shown in fig. 1, 2, 5, and 6, the cross-sectional dimension of the shut-off channel 126 is smaller than the dimension of the first port 1251 and the cross-sectional dimension of the shut-off channel 126 is smaller than the dimension of the second port 1252, such that the shut-off channel 126 does not excessively affect the pressure within the receiving chamber 180. For example, the cross-sectional dimension of the shut-off channel 126 is less than 1/5 of the dimension of the first port 1251 and the cross-sectional dimension of the shut-off channel 126 is less than 1/5 of the dimension of the second port 1252. The size of the cross-section of the shut-off channel 126 is not limited by the embodiments of the present utility model.

In some examples, as shown in fig. 1, 2, 5, and 6, the receiving cavity 180 may be an annular cavity, for example, the pressure relief channel 125 may be one or more, for example, the plurality of pressure relief channels 125 may be uniformly disposed on the second body portion 124 and uniformly communicate with the receiving cavity 180. Of course, the shape of the accommodating cavity 180 is not limited in the embodiment of the present utility model, and the number, shape and arrangement position of the pressure release channels 125 are not limited.

In some examples, as shown in fig. 1, 2, 5, and 6, the number of shut-off channels 126 may be 1 or more, and embodiments of the present utility model do not limit the number of shut-off channels 126. For example, the plurality of shut-off passages 126 may be evenly distributed within the second body portion 124, and the plurality of shut-off passages 126 may also be offset distributed within the second body portion 124.

In some examples, as shown in fig. 1, 2, 5, and 6, the cross-sectional dimension of the cutoff channel 126 along the extension of the channel may be uniform, although embodiments of the present utility model are not limited thereto, and the cross-sectional dimension of the cutoff channel 126 along the extension of the channel may be gradually increased, for example, gradually increased or gradually decreased, for example, may be increased in the middle and decreased in the two sides.

In some examples, as shown in fig. 1, 2, 5, and 6, the shut-off channel 126 extends through the interior of the second body portion 124 in the axial direction X. Of course, embodiments of the present utility model are not limited thereto, for example, the extending direction of the intercepting passageway 126 may intersect the axial direction X, for example, the intercepting passageway 126 may be a curve, a broken line, etc. surrounding the outer side surface of the second body portion 124, the intercepting passageway 126 may be a curve, a broken line, etc. located in the second body portion 124, and the intercepting passageway 126 may be partially located on the outer side surface of the second body portion 124 and partially located in the second body portion 124.

In some examples, as shown in fig. 1, 2, 5, and 6, the radial dimension of the opposing ends of the shut-off channel 126 is greater than the radial dimension of at least a portion of the shut-off channel 126 between the ends. Therefore, the pressure in the accommodating cavity 180 can be adjusted through at least part of the intercepting passageway 126 between the two ends, and meanwhile, the area of the intercepting passageway 126 can be increased by designing the radial dimensions of the two ends to be relatively larger, so that damping medium can smoothly enter the intercepting passageway 126. In addition, the relatively large radial dimensions of the two ends also reduce the impact or impact of the damping medium flowing from the shut-off channel 126 on the peripheral component, including, for example, the valve plate 140.

In some examples, the damping valve apparatus further comprises a control unit. The control unit is located at one side of the first valve core away from the second valve core. The control unit is connected with the first valve core to control the first valve core to move axially relative to the second valve core.

In some examples, the control unit includes a solenoid valve. Of course, the embodiment of the utility model is not limited to the form and structure of the control unit, nor is the specific structure of the solenoid valve.

In some examples, as shown in fig. 1, 2, 5, and 6, the first valve spool 120 is in sliding engagement with the valve sleeve 110 along the axial direction X, and the second valve spool 130 is fixedly coupled with the valve sleeve 110. For example, the second valve element 130 may be secured to the valve housing 110 by welding, interference fit, bolting, riveting, or the like.

The embodiment of the utility model also provides a shock absorber. Fig. 7 is a schematic cross-sectional view of a shock absorber according to an embodiment of the present utility model. As shown in fig. 7, the shock absorber includes any of the damper valve assemblies described above and a housing 210, with the damper valve assemblies being located within the housing 210. Therefore, the shock absorber has the beneficial effects corresponding to the beneficial effects of the damping valve device, and the detailed description is omitted.

In some examples, as shown in fig. 7, the cavity in the housing 210 is divided into two chambers, a chamber 211 and a chamber 212, and the chamber 211 and the chamber 212 are communicated by the flow channel 160, and the flow rate of the damping medium between the chamber 211 and the chamber 212 is controlled by the size of the flow channel 160, thereby achieving the adjustment of the damping performance of the shock absorber.

In some examples, as shown in fig. 7, the shock absorber further includes a rebound valve assembly 220, the rebound valve assembly 220 being located on a side of the second valve spool 130 remote from the first valve spool 120, the passage of the rebound valve assembly 220 being in communication with the passage of the second valve spool 130 such that damping medium may be circulated between the chamber 211 and the chamber 212 through the rebound valve assembly 220 and the second valve spool 130.

In some examples, as shown in fig. 7, the outer circumference of the recovery valve assembly 220 is further provided with a sealing ring 230, the inner circumference of the sealing ring 230 is tightly fitted with the recovery valve assembly 220, the outer circumference of the sealing ring 230 is tightly fitted with the inner sidewall of the housing 210, so that the recovery valve assembly 220 and the sealing ring 230 divide the cavity of the housing 210 into two chambers: the chamber 211 and the chamber 212 are communicated through the flow channel 160, and the flow quantity of the damping medium between the chamber 211 and the chamber 212 is controlled through the size of the flow channel 160, so that the damping performance of the shock absorber 200 can be adjusted.

In some examples, as shown in fig. 7, the shock absorber further includes a piston rod 240, where the piston rod 240 is connected to the damping valve device, for example, when the piston rod 140 responds to an external shock, the piston rod 240 may drive the damping valve device to move in the housing 210 along the axial direction X, and at this time, by controlling the size of the flow channel 160, the movement of the damping valve device in the housing 210 may be controlled, and further feedback may be made on the movement of the piston rod 240, so as to implement the damping performance of the shock absorber.

The following points need to be described:

(1) In the drawings of the embodiments of the present utility model, only the structures related to the embodiments of the present utility model are referred to, and other structures may refer to the general design.

(2) Features of the same embodiment and of different embodiments of the utility model may be combined with each other without conflict.

The foregoing is merely illustrative embodiments of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the technical scope of the present utility model, and the utility model should be covered. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims (15)

1. A damper valve assembly, comprising:

the valve housing is arranged in the valve housing,

a first valve core positioned in the valve sleeve;

the second valve core is positioned in the valve sleeve, and the first valve core and the second valve core are oppositely arranged along the axial direction of the valve sleeve;

a valve plate located between the first valve core and the second valve core in the axial direction of the valve sleeve; and

an elastic element positioned at one side of the valve plate close to the second valve core,

the second valve core comprises an annular main body part and a supporting part positioned in the annular main body part, the supporting part is provided with a through hole penetrating through the supporting part along the axial direction, the elastic element comprises a first end and a second end which are opposite to each other along the axial direction, the first end is in contact fit with the valve sheet, the second end is in contact fit with the supporting part, the valve sheet is configured to move along the axial direction relative to the second valve core under the action of the elastic element, so that a circulation channel is formed between the valve sheet and the second valve core, and the first valve core is configured to move along the axial direction relative to the second valve core so as to adjust the size of the circulation channel.

2. The damping valve device according to claim 1, wherein the valve plate is configured to be fixed in the axial direction with respect to the first spool by the elastic member.

3. The damper valve assembly of claim 1, wherein the valve plate comprises a disk shape.

4. A damping valve apparatus according to any one of claims 1-3, wherein said first valve element comprises a first end face on a side thereof adjacent to said valve plate, said first end face having a shape of an annular shape, said second valve element comprises a second end face on a side thereof adjacent to said valve plate, said second end face having a shape of an annular shape,

the orthographic projection of the first end surface on the reference plane at least partially falls into the orthographic projection of the valve plate on the reference plane, the orthographic projection of the second end surface on the reference plane at least partially falls into the orthographic projection of the valve plate on the reference plane,

the reference plane is perpendicular to the axial direction.

5. The damper valve assembly of claim 4, wherein the radial dimension of the valve plate is greater than or equal to the radial dimension of the first end face and the radial dimension of the valve plate is greater than or equal to the radial dimension of the second end face.

6. The damper valve assembly of claim 4, wherein said first spool includes a first pilot shaft extending in said axial direction toward said second spool, said valve plate and said resilient member being sleeved on said first pilot shaft.

7. The damper valve assembly according to claim 6, wherein the support portion of the second spool is provided with a guide hole extending in the axial direction, and the guide hole cooperates with the first guide shaft to guide movement of the first guide shaft in the axial direction.

8. The damping valve device according to claim 4, wherein a second guide shaft is provided on the support portion of the second spool, the second guide shaft extends toward the first spool in the axial direction, and the valve plate and the elastic member are sleeved on the second guide shaft.

9. The damping valve apparatus of claim 8, wherein an end of the second guide shaft proximate the first spool is further provided with a blocking structure configured to block the valve plate from falling off the second guide shaft.

10. A damping valve arrangement according to any one of claims 1-3, characterized in that the valve sleeve comprises flow openings through the outer and inner side walls of the valve sleeve, which flow openings at least partly overlap the valve plate in the radial direction of the valve sleeve.

11. The damper valve assembly of claim 10, further comprising:

a third spool located on a side of the first spool away from the second spool in the axial direction and configured to move in the axial direction with respect to the first spool,

wherein the first valve core comprises a first body part and a second body part, the second body part is closer to the second valve core than the first body part, the outer diameter of the second body part is larger than that of the first body part, the part of the second body part which is not covered by the first body part is close to the surface of the third valve core, the side surface of the first body part and the inner wall of the valve sleeve form a containing cavity,

the first body part comprises a pressure relief channel, a first port of the pressure relief channel faces the third valve core, the third valve core is configured to cover or open the first port, a second port of the pressure relief channel is communicated with the accommodating cavity,

the second body part comprises a shutoff channel, the shutoff channel penetrates through the second body part, and the accommodating cavity is communicated with the circulation hole through the shutoff channel.

12. The damper valve assembly of claim 11, wherein said shut-off passageway extends through an interior of said second body portion.

13. The damping valve apparatus according to claim 12, wherein the radial dimensions of the two ends of the shut-off channel opposite each other are greater than or equal to the radial dimensions of at least a portion of the shut-off channel between the two ends.

14. A damper valve assembly according to any one of claims 1-3, further comprising:

a control unit which is positioned at one side of the first valve core away from the second valve core,

wherein the first valve core is in sliding fit with the valve sleeve along the axial direction, the second valve core is fixedly connected with the valve sleeve,

the control unit is connected with the first valve core to control the first valve core to move along the axial direction relative to the second valve core.

15. A shock absorber, comprising:

a housing, and

the damper valve arrangement according to any one of claims 1-14, located within the housing.