Valve structure and vibration damper

Abstract

A valve structure and a vibration damper are disclosed. The valve structure includes a valve sleeve, a valve seat structure, a first valve core, a second valve core, a third valve core, a valve assembly, and an annular element. The valve sleeve has a fluid discharge passage, and the valve seat structure includes a first inflow passage. The valve assembly includes a valve ring, which is configured to reciprocate along an axial extension direction to close or open the outlet of the first inflow passage. The first valve core is configured to reciprocate along an axial extension direction to form a variable flow opening with the annular element. In response to the opening of the outlet of the first inflow passage, the first inflow passage communicates with the fluid discharge passage through the variable flow opening. The second valve core is configured to face or move away from the first valve core to close or open the opening of the internal flow channel of the first valve core, and the first inflow passage communicates with the fluid discharge passage through the internal flow channel. This design helps to mitigate the throttling phenomenon that may occur when fluid flows into the first inflow passage and also improves the driving experience.

Description

Technical Field

[0001] At least one embodiment of this disclosure relates to a valve structure and a vibration damper. Background Technology

[0002] To improve vehicle driving comfort, shock absorbers can be installed in the suspension system. Shock absorbers rely on damping valves to regulate the flow and throttling of damping fluid, converting vibrational mechanical energy into heat energy and dissipating it, thereby improving vehicle ride smoothness and handling stability, and optimizing the driving experience. Summary of the Invention

[0003] At least one embodiment of this disclosure provides a valve structure and a vibration damper.

[0004] At least one embodiment of this disclosure provides a valve structure, including: a valve sleeve having a fluid discharge channel, the outlet of which is directly connected to an external space; a valve seat structure disposed opposite to the valve sleeve along an extension direction of the valve sleeve axis, the valve seat structure including a first inflow channel; a first valve core at least partially located within the valve sleeve; a second valve core located on the side of the first valve core away from the valve seat structure; a third valve core passing through the valve seat structure along an extension direction of the axis; and a valve assembly sleeved outside the third valve core; the valve assembly includes a valve ring, the entire valve ring being configured to reciprocate along an extension direction of the axis to close or open the first valve core. An outlet of an inflow channel; an annular element located between the first valve core and the valve seat structure; the annular element being disposed opposite to the first valve core in the extension direction of the axis; wherein the first valve core is configured to reciprocate along the extension direction of the axis to form a variable flow opening with the annular element, the first inflow channel communicating with the fluid discharge channel through the variable flow opening in response to the opening of the outlet of the first inflow channel; a second valve core being configured to close or open the opening of the internal flow channel of the first valve core toward or away from the first valve core, and the first inflow channel communicating with the fluid discharge channel through the internal flow channel.

[0005] For example, according to at least one embodiment of this disclosure, the channel opened on the valve seat structure includes only the first inflow channel.

[0006] For example, according to at least one embodiment of the present disclosure, the outlet of the fluid discharge channel is located on the outer wall of the valve sleeve.

[0007] For example, according to at least one embodiment of this disclosure, the entrance to the first inflow channel is open.

[0008] For example, according to at least one embodiment of this disclosure, the valve sleeve and the annular member are separate, independent components.

[0009] For example, according to at least one embodiment of this disclosure, the valve sleeve includes a first portion and a second portion, the second portion being connected to the side of the first portion facing the valve seat structure; the first portion is configured to support the first valve core to reciprocate along the extension direction of the axis, and the second portion is sleeved on the annular member; the fluid discharge channel includes a first discharge channel and a second discharge channel communicating with each other, the first discharge channel being disposed in the first portion, the second discharge channel being disposed in the second portion, and the end of the second discharge channel away from the axis opening as the outlet of the fluid discharge channel.

[0010] For example, according to at least one embodiment of the present disclosure, the extension direction of the first discharge channel is substantially parallel to the axis, and the extension direction of the second discharge channel intersects the axis.

[0011] For example, according to at least one embodiment of the present disclosure, the first portion of the valve sleeve has a cavity between the surfaces of the annular member facing each other, the cavity being directly connected between the first discharge channel and the second discharge channel, and being configured to be directly connected to the variable flow opening.

[0012] For example, according to at least one embodiment of the present disclosure, the variable flow opening and the second discharge channel are disposed opposite each other in a direction perpendicular to the axis.

[0013] For example, according to at least one embodiment of the present disclosure, a first space is formed between the valve seat structure, the annular member and the first valve core, the first space being configured to communicate with the fluid discharge channel through the variable flow opening; the valve ring is configured to control the fluid flow rate flowing from the first inflow channel into the first space.

[0014] For example, according to at least one embodiment of the present disclosure, the valve assembly further includes a pressure-applying element; the valve structure further includes a valve plate located on the side of the valve ring away from the valve seat structure, and the pressure-applying element is located between the valve ring and the valve plate; the valve plate is configured to provide an elastic force toward the valve ring to the pressure-applying element.

[0015] For example, according to at least one embodiment of the present disclosure, the valve structure further includes a connecting structure connected to the side of the valve seat structure away from the annular member; the connecting structure has a second inflow channel communicating with the first inflow channel; the connecting structure is configured to connect to a vibration damping element.

[0016] For example, according to at least one embodiment of this disclosure, the throttling area of ​​the first inflow channel is not less than the throttling area of ​​the second inflow channel.

[0017] For example, according to at least one embodiment of this disclosure, the second inflow channel is located on the side of the third valve core away from the second valve core, and the axis of the valve sleeve passes through the second inflow channel.

[0018] For example, according to at least one embodiment of this disclosure, a second space is formed between the valve seat structure and the connecting structure, and the first inflow channel and the second inflow channel are connected through the second space.

[0019] For example, according to at least one embodiment of the present disclosure, the end of the connection structure away from the valve sleeve includes a connection portion surrounding the second inflow channel; the connection portion is configured to connect to the damping element; the valve structure further includes a seal sleeved over the connection portion.

[0020] At least one embodiment of this disclosure provides a vibration damper including the valve structure described in any of the above embodiments. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this disclosure and are not intended to limit this disclosure.

[0022] Figure 1 This is a cross-sectional schematic diagram of a valve structure provided in at least one embodiment of the present disclosure.

[0023] Figure 2 for Figure 1 A magnified view of a portion of point A shown. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. Based on the described embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0025] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that an element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects.

[0026] The terms "parallel," "perpendicular," and "identical" as used in this disclosure include the strictly defined meanings of "parallel," "perpendicular," and "identical," as well as cases where "approximately parallel," "approximately perpendicular," and "approximately identical" include some degree of error. Taking into account measurement and errors associated with the measurement of a specific quantity (i.e., limitations of the measurement system), they represent the acceptable deviation range for a specific value as determined by a person skilled in the art. In embodiments of this disclosure, "center" can include a strictly geometrically centered location and an approximate center location within a small area surrounding the geometrically centered location. For example, "approximately" can mean within one or more standard deviations, or within 10% or 5% of the value.

[0027] At least one embodiment of this disclosure provides a valve structure, which includes a valve sleeve, a valve seat structure, a first valve core, a second valve core, and an annular component. The valve sleeve has a fluid discharge passage whose outlet is directly connected to the external space; a valve seat structure is disposed opposite to the valve sleeve along the extension direction of the valve sleeve axis, and the valve seat structure includes a first inflow passage; a first valve core is at least partially located inside the valve sleeve; a second valve core is located on the side of the first valve core away from the valve seat structure; a third valve core passes through the valve seat structure along the extension direction of the axis; a valve assembly is sleeved on the third valve core; the valve assembly includes a valve ring, the entire valve ring being configured to reciprocate along the extension direction of the axis to close or open the outlet of the first inflow passage; an annular member is located between the first valve core and the valve seat structure; in the extension direction of the axis, the annular member is disposed opposite to the first valve core; the first valve core is configured to reciprocate along the extension direction of the axis to form a variable flow opening with the annular member, and in response to the opening of the outlet of the first inflow passage, the first inflow passage communicates with the fluid discharge passage through the variable flow opening; the second valve core is configured to face or move away from the first valve core to close or open the opening of the internal flow channel of the first valve core, and the first inflow passage communicates with the fluid discharge passage through the internal flow channel.

[0028] At least one embodiment of this disclosure provides a vibration damper including the valve structure described above.

[0029] The valve structure and vibration damper provided in at least one embodiment of this disclosure have a first inflow channel disposed on a valve seat structure and a fluid discharge channel disposed on a valve sleeve. That is, the valve structure places the first inflow channel and the fluid discharge channel on different parts. This allows for greater design freedom in the dimensions of the first inflow channel and the fluid discharge channel, thus better meeting different design requirements. For example, it is not necessary to design the fluid discharge channel on the valve seat structure, allowing for a larger radial dimension of the first inflow channel. This helps to mitigate the throttling phenomenon that may occur when fluid flows into the first inflow channel. Furthermore, it reduces the risk of blockage caused by impurities in the fluid depositing in the first inflow channel. Simultaneously, by configuring the valve assembly to be sleeved outside the third valve core, and allowing the valve ring to reciprocate along the axial extension direction, when the fluid applies a force to the valve ring, the valve ring moves towards the first valve core, thereby quickly opening the outlet of the first inflow channel. Combined with the aforementioned positional design of the first inflow channel and the fluid discharge channel, because the outlet of the first inflow channel opens quickly and with a larger opening degree, and the risk of throttling is low, the fluid can quickly flow out from the outlet of the first inflow channel, and the damping force can be very small. Thus, the shock absorber can achieve lower damping force in a comfortable state, and behaves more "softly" when the electromagnetic part is not energized, improving the driving experience. Moreover, compared to other structures such as springs, even with internal pressure within the valve structure, the valve ring's reset speed is very fast, thus having virtually no impact on the stability of the damping force. Furthermore, due to the design of the positions of the first inlet channel and the fluid outlet channel in the valve structure, the fluid flow path within the valve structure is correspondingly altered compared to other damping valves. Fluid can flow to the fluid outlet channel through the variable flow opening between the first valve core and the annular component, or through the internal flow channel in the first valve core, and thus be directly discharged to the external space through the fluid outlet channel on the valve sleeve. Combining the above fluid flow path, it is clear that opening a fluid outlet channel directly connected to the external space on the valve sleeve also helps to shorten the fluid discharge path, as the fluid does not need to pass through the valve seat structure during discharge. Moreover, by setting an annular component to form a variable flow opening between the annular component and the first valve core, it is beneficial to reduce the impact of accumulated tolerances after component assembly, and it is easy to adapt to different working conditions by replacing the annular component.

[0030] The valve structure and vibration damper are described below with reference to the accompanying drawings and through some embodiments.

[0031] Figure 1 This is a cross-sectional schematic diagram of a valve structure provided in at least one embodiment of the present disclosure. Figure 2 for Figure 1 A magnified view of a portion of point A shown.

[0032] refer to Figure 1and Figure 2 This disclosure provides at least one embodiment of a valve structure. The valve structure includes a valve sleeve 100, a valve seat structure 200, a first valve core 300, a second valve core 400, a third valve core 600, and an annular member 500. The valve sleeve 100 has a fluid discharge passage 101, the outlet of which is directly connected to the external space. For example, fluid can be discharged directly from inside the valve structure through the fluid discharge passage 101, such as being discharged to the external space through the outlet of the fluid discharge passage 101.

[0033] For example, "the exit is directly connected to the external space" means that the exit does not need to be connected to the external space through other channels, chambers, etc. It is understood that "direct" in this article means that it does not need to be indirectly achieved through other structures, which will not be elaborated on later.

[0034] refer to Figure 1 and Figure 2 The valve seat structure 200 is disposed opposite to the valve sleeve 100 along the extension direction of the axis AX of the valve sleeve 100, and the valve seat structure 200 includes a first inflow channel 201. The first valve core 300 is at least partially located inside the valve sleeve 100. For example, the first valve core 300 may be completely located inside the valve sleeve 100, or it may be partially located inside the valve sleeve 100 and partially located outside the valve sleeve 100.

[0035] refer to Figure 1 and Figure 2 The second valve core 400 is located on the side of the first valve core 300 away from the valve seat structure 200, the third valve core 600 is inserted through the valve seat structure 200 along the extension direction of the axis AX, and the annular member 500 is located between the first valve core 300 and the valve seat structure 200. For example, the second valve core 400, the first valve core 300, the annular member 500, and the valve seat structure 200 are arranged sequentially on the axis AX.

[0036] refer to Figure 1 and Figure 2 The valve structure also includes a valve assembly 1000, which is sleeved outside the third valve core 600. The valve assembly 1000 includes a valve ring 1100, which is configured to reciprocate along the extension direction of the axis AX to close or open the outlet of the first inflow channel 201. For example, portions of different regions of the valve ring 1100 may translate together along the axis AX, thereby enabling rapid closing or opening of the outlet of the first inflow channel 201. For example, the outlet of the first inflow channel 201 may be an opening on the side of the first inflow channel 201 facing the first valve core 300.

[0037] refer to Figure 1 and Figure 2In the direction of extension of axis AX, the annular member 500 is disposed opposite to the first valve core 300. For example, on a reference plane perpendicular to axis AX, the orthographic projection of the annular member 500 and the orthographic projection of the valve core 300 overlap.

[0038] refer to Figure 1 and Figure 2 The first valve core 300 is configured to reciprocate along the extension direction of the axis AX to form a variable flow opening 01 between itself and the annular member 500. The size of the variable flow opening 01 can be changed with the relative movement between the first valve core 300 and the annular member 500, thereby opening or closing the variable flow opening 01. In response to the opening of the outlet of the first inflow channel 201, the first inflow channel 201 communicates with the fluid discharge channel 101 through the variable flow opening 01. For example, fluid can flow into the valve structure through the first inflow channel 201 and exert a force on the first valve core 300. The first valve core 300 reciprocates along the extension direction of the axis AX, thereby changing the opening degree of the variable flow opening 01 to adjust the fluid damping. When the variable flow opening 01 between the annular member 500 and the first valve core 300 is open, fluid can be discharged to the external space through the variable flow opening 01 and the fluid discharge channel 101.

[0039] refer to Figure 1 and Figure 2 The second valve core 400 is configured to face or move away from the first valve core 300 to close or open the opening of the internal flow channel 301 of the first valve core 300, thereby controlling the flow rate of fluid exiting from the opening of the internal flow channel 301. The first inflow channel 201 communicates with the fluid discharge channel 101 through the internal flow channel 301. For example, the second valve core 400 can press against the opening of the internal flow channel 301 of the first valve core 300 to block the opening. When the pressure on the second valve core 400 reaches a certain level, the fluid can overcome the pressure of the second valve core 400 and flow out.

[0040] refer to Figure 1 and Figure 2The valve structure provided in this embodiment of the present disclosure has a first inflow channel 201 disposed on a valve seat structure 200 and a fluid discharge channel 101 disposed on a valve sleeve 100. That is, the valve structure places the first inflow channel 201 and the fluid discharge channel 101 on different parts. This allows for greater design freedom in the dimensions of the first inflow channel 201 and the fluid discharge channel 101, thus better meeting different design requirements. For example, it is not necessary to design the fluid discharge channel 101 on the valve seat structure 200, allowing for a larger radial dimension of the first inflow channel 201. This helps to mitigate the throttling phenomenon that may occur when fluid flows into the first inflow channel 201. Furthermore, it reduces the risk of blockage caused by impurities in the fluid depositing in the first inflow channel 201.

[0041] Meanwhile, by configuring the valve assembly 1000 to be sleeved outside the third valve core 600, and allowing the valve ring 1100 to reciprocate along the extension direction of the axis AX, when fluid applies force to the valve ring 1100, the valve ring 1100 moves towards the first valve core 300, thereby quickly opening the outlet of the first inflow channel 201. Combined with the aforementioned positional design of the first inflow channel 201 and the fluid discharge channel 101, the fluid can quickly flow out of the outlet of the first inflow channel 201 due to its fast opening speed, larger opening degree, and lower risk of throttling, resulting in very low damping force. Thus, the shock absorber can achieve lower damping force in a comfortable state, and behaves more "softly" when the electromagnetic part is not energized, improving the driving experience. Moreover, compared to other structures such as springs, even if there is internal pressure within the valve structure, the valve ring 1100's reset speed is very fast, thus essentially not affecting the stability of the damping force.

[0042] Furthermore, due to the design of the valve structure regarding the positions of the first inflow channel and the fluid discharge channel, the flow path of the fluid inside the valve structure is correspondingly altered compared to other damping valves (such as damping valves that place the fluid discharge channel on the valve seat structure). Figure 1 The schematic diagram illustrates the fluid flow path. Fluid can flow to the fluid discharge channel 101 through the variable flow opening 01 between the first valve core 300 and the annular member 500, or through the internal flow channel 301 in the first valve core 300 (see reference). Figure 2The fluid flows to the fluid discharge channel 101, and is thus directly discharged to the external space through the fluid discharge channel 101 on the valve sleeve 100. Based on the above-described fluid flow path, it can be seen that opening a fluid discharge channel 101 on the valve sleeve 100 that directly connects to the external space also helps to shorten the fluid discharge path, such as the fluid not needing to pass through the valve seat structure 200 during discharge. Furthermore, by providing the annular member 500 to form a variable flow opening 01 between the annular member 500 and the first valve core 300, it helps to reduce the impact of accumulated tolerances after component assembly, and it is easy to adapt to different operating conditions by replacing the annular member 500.

[0043] For example, the fluid in the embodiments of this disclosure may include damping fluid, such as oil, or a mixture of gas and liquid, etc., and this disclosure does not limit it.

[0044] refer to Figure 1 and Figure 2 For example, the second valve core 400 can be a pilot valve core.

[0045] refer to Figure 1 and Figure 2 For example, the third valve core 600 is fixedly connected to the valve seat structure 200. For example, the third valve core 600 and the valve seat structure 200 can be fixed together by means of threaded connection, riveting, welding, etc., and this disclosure does not limit this.

[0046] refer to Figure 1 For example, the valve structure may also include an electromagnetic component 901, a valve armature 902, and a valve stem 903. The valve stem 903 may pass through the valve armature 902. The electromagnetic component 901 is configured to drive the valve armature 902 to reciprocate along its axial direction, thereby driving the valve stem 903 to reciprocate. For example, the valve stem 903 may be configured to drive the second valve core 400 to reciprocate. Thus, the electromagnetic component 901 can be used to drive the valve armature 902 and the valve stem 903, thereby controlling the clamping force of the second valve core 400, that is, controlling the opening degree of the internal flow channel 301 of the first valve core 300, and realizing adjustable damping force.

[0047] refer to Figure 1 and Figure 2 In some examples, the outlet of the fluid discharge channel 101 is located on the outer wall of the valve sleeve 100. This facilitates direct communication between the outlet of the fluid discharge channel 101 and the external space, simplifying the manufacturing process of the fluid discharge channel 101. Furthermore, it shortens the fluid discharge path length. It is understood that the machinable space of the outer wall of the valve sleeve 100 is relatively large (e.g., compared to the end face of the valve sleeve 100), and by placing the outlet of the fluid discharge channel 101 on the outer wall of the valve sleeve 100, it is also advantageous to design the size of the outlet of the fluid discharge channel 101 as needed.

[0048] refer to Figure 1 and Figure 2 In some examples, the channels on the valve seat structure 200 only include the first inflow channel 201. For example, the valve seat structure 200 does not have channels for fluid discharge, such as the fluid discharge channel 101. That is, the fluid does not need to be discharged through the valve seat structure 200 to the external space of the valve structure. The design of the first inflow channel 201 on the valve seat structure 200 is not limited by the channels for fluid discharge.

[0049] refer to Figure 1 and Figure 2 For example, the inlet of the first inflow channel 201 is open. For example, no other structure is provided at the inlet of the first inflow channel 201 to obstruct the passage of fluid, so that the fluid can directly enter the first inflow channel 201, which facilitates the application of a force toward the first valve core 300 to the valve ring 1100 to open the outlet of the first inflow channel 201, thereby achieving a smaller damping force.

[0050] refer to Figure 1 and Figure 2 In conjunction with the example described later, when the valve structure includes the connecting structure 700, the inlet of the first inflow channel 201 can always be connected to the second inflow channel 701 on the connecting structure 700, such as the inlet of the first inflow channel 201 being directly connected to the second space Z2.

[0051] refer to Figure 1 and Figure 2 In some examples, at least a portion of the extension direction of the fluid discharge channel 101 intersects with at least a portion of the extension direction of the first inflow channel 201. Since the fluid discharge channel 101 and the first inflow channel 201 are respectively disposed on different parts, the specific structural design of the fluid discharge channel 101 and the first inflow channel 201 is more flexible.

[0052] refer to Figure 1 and Figure 2 For example, depending on different design requirements, the extension direction of the first inflow channel 201 may intersect the extension direction of a portion of the fluid discharge channel 101. The first inflow channel 201 may extend in a direction parallel to the axis AX, thereby facilitating fluid inflow. The fluid discharge channel 101 may have a portion (as in the example described later) Figure 2 The second discharge channel 1012 shown extends in a direction intersecting the axis AX, thereby realizing the discharge of fluid and simplifying the processing technology.

[0053] Of course, this disclosure is not limited to this. For example, the first inflow channel may also extend in a direction intersecting the axis, such as by setting the first inflow channel as an oblique hole. For example, when the thickness of the valve seat structure (i.e., the dimension in the extension direction of the axis AX) is set to be large, by setting an oblique hole, it is beneficial to allow the axis to pass through the inlet of the first inflow channel, such that the inlet of the oblique hole can be directly opposite the third valve core 600 on the axis AX, thereby facilitating the assembly of the valve structure with the external vibration damping element and optimizing the stress. For example, only a portion of the extension direction of the fluid discharge channel may intersect a portion of the extension direction of the first inflow channel. For example, the entire extension direction of the fluid discharge channel may intersect the entire extension direction of the first inflow channel. This disclosure does not limit this.

[0054] refer to Figure 1 and Figure 2 In some examples, the first inflow channel 201 and the fluid discharge channel 101 do not overlap in the direction perpendicular to the axis AX. By setting the first inflow channel 201 and the fluid discharge channel 101 on different parts, it is possible to achieve that the first inflow channel 201 and the fluid discharge channel 101 do not overlap in the radial direction, which is beneficial to shortening the fluid flow path.

[0055] refer to Figure 1 and Figure 2 In some examples, the valve sleeve 100 includes a first portion 110 and a second portion 120, the second portion 120 being connected to the side of the first portion 110 facing the valve seat structure 200. The first portion 110 is configured to support the reciprocating motion of the first valve core 300 along the extension direction of the axis AX, and the second portion 120 is fitted over the annular member 500.

[0056] refer to Figure 1 and Figure 2 For example, the first valve core 300 includes, as Figure 2 The diagram shows a main body portion 310 and a protruding portion 320 extending from the main body portion 310. For example, the protruding portion 320 may protrude toward the second valve core 400 relative to the main body portion 310 in the extension direction of the axis AX. A first portion 110 is configured to support the main body portion 310 and the protruding portion 320. An internal flow channel 301 includes a first sub-flow channel 3011 formed on the main body portion 310 and a second sub-flow channel 3012 formed on the protruding portion 320. The second valve core 400 is configured to open toward or away from the second sub-flow channel 3012 on a side away from the valve seat structure 200 to control the flow rate of fluid flowing out from that opening.

[0057] refer to Figure 1 and Figure 2In some examples, the fluid discharge channel 101 includes a first discharge channel 1011 and a second discharge channel 1012 that are connected to each other. The first discharge channel 1011 is located in the first part 110, and the second discharge channel 1012 is located in the second part 120. The end of the second discharge channel 1012 away from the axis AX opens as the outlet of the fluid discharge channel 101. By opening the first discharge channel 1011 on the first part 110 of the valve sleeve 100 and the second discharge channel 1012 on the second part 120 of the valve sleeve 100, the structural space of the valve sleeve 100 can be reasonably utilized to achieve communication between the fluid discharge channel 101 and other channels or spaces.

[0058] refer to Figure 1 and Figure 2 For example, the plane where the opening of the first discharge channel 1011 is located near the annular member 500 can be used as a reference plane, and the valve sleeve 100 can be roughly divided into a first part 110 and a second part 120 by the reference plane.

[0059] refer to Figure 1 and Figure 2 In some examples, the extension direction of the first discharge channel 1011 is substantially parallel to the axis AX, while the extension direction of the second discharge channel 1012 intersects the axis AX. For instance, the valve sleeve 100, which supports the first portion 110 of the first valve core 300, has a relatively large dimension in the extension direction of the axis AX. By providing the first discharge channel 1011 on the first portion 110, the variable flow opening 01 can be connected to the space where the second valve core 400 is located. Simultaneously, the thickness of the second portion 120 can be relatively thin, which facilitates the opening of the second discharge channel 1012 in the wall thickness direction, ensuring that the outlet of the second discharge channel 1012 is located on the outer wall of the valve sleeve 100. Thus, the second discharge channel 1012 can be used to connect the first discharge channel 1011 and the external space, enabling fluid discharge.

[0060] refer to Figure 1 and Figure 2 In some examples, a cavity 11 is provided between the first portion 110 of the valve sleeve 100 and the surfaces of the annular member 500 facing each other. This cavity 11 directly communicates between the first discharge channel 1011 and the second discharge channel 1012, and is configured to communicate directly with the variable flow opening 01, thereby shortening the fluid flow path. Thus, fluid flowing into the cavity 11 from the first discharge channel 1011 can be discharged through the second discharge channel 1012. When the variable flow opening 01 is open, it communicates with the second discharge channel 1012 through the cavity 11, allowing fluid flowing into the cavity 11 from the variable flow opening 01 to be discharged through the second discharge channel 1012.

[0061] refer to Figure 1 and Figure 2 In some examples, the variable flow opening 01 and the second discharge channel 1012 are positioned opposite each other in a direction perpendicular to the axis AX, which helps to shorten the flow path of the fluid.

[0062] refer to Figure 1 and Figure 2 For example, the second discharge channel 1012 and the opening of the variable flow opening 01 facing each other can be arranged opposite each other in a direction perpendicular to the axis AX. For example, the second discharge channel 1012 can extend in a direction perpendicular to the axis AX. For example, a straight line perpendicular to the axis AX can pass through the variable flow opening 01 and the second discharge channel 1012. For example, a straight line perpendicular to the axis AX and passing through the center of the second discharge channel 1012 can pass through the variable flow opening 01.

[0063] refer to Figure 1 and Figure 2 In some examples, the valve sleeve 100 and the annular component 500 are separate, independent parts. This simplifies the assembly process of the valve components.

[0064] refer to Figure 1 and Figure 2 For example, the inner diameter of the annular member 500 and the inner diameter of the main body portion 310 of the first valve core 300 can be matched, such as having approximately the same dimensions. Alternatively, the inner diameter of the annular member 500 can be slightly smaller than the inner diameter of the main body portion 310 of the first valve core 300 to reduce the contact area between the annular member 500 and the first valve core 300, thereby reducing errors and improving sealing performance. For example, the surface of the annular member 500 facing the first valve core 300 may include a contact surface S, which is configured to contact or separate from the first valve core 300 to form a variable flow opening 01. For example, the contact surface S may protrude beyond other portions of the surface of the annular member 500 facing the first valve core 300, further reducing the contact area between the annular member 500 and the first valve core 300 to improve sealing performance.

[0065] refer to Figure 1 and Figure 2 For example, the inner diameter of the annular component 500 and the inner diameter of the main body 310 can be adjusted as needed, such as by designing them to be larger or smaller, to adjust the damping performance of the valve structure. It can be understood that by changing the inner diameter of the annular component 500 and the inner diameter of the main body 310 together, the size of the force-bearing area can be changed, thereby adjusting the magnitude of the damping force.

[0066] refer to Figure 1 and Figure 2For example, the outer diameter of the main body 310 can remain unchanged, such as when it is in contact with the inner wall of the first part 110 of the valve sleeve 100, and the inner diameter of the main body 310 can be changed by changing the wall thickness of the main body 310.

[0067] refer to Figure 1 and Figure 2 For example, if the inner diameter of the annular component 500 and the inner diameter of the main body 310 are designed to be smaller, the area on which the fluid acts on the main body 310 is correspondingly reduced, thus requiring a larger force to move the first valve core 300. Therefore, without changing other properties of the valve structure (such as the orifice size of the internal flow channel 301 in the first valve core 300, the magnitude of the electromagnetic driving force, etc.), the performance adjustment range of the valve structure can be adjusted, resulting in a wider damping bandwidth, which helps the valve structure to be adapted to more vehicle models.

[0068] refer to Figure 1 and Figure 2 For example, in the direction perpendicular to the axis AX, the third valve core 600 does not overlap with the first valve core 300. For example, in the direction perpendicular to the axis AX, the first valve core 300 does not overlap with the valve assembly 1000. For example, in the direction perpendicular to the axis AX, the third valve core 600 does not overlap with the variable flow opening 01. For example, in the direction perpendicular to the axis AX, the valve assembly 1000 does not overlap with the variable flow opening 01. Combining the above examples, by setting the positions of the first inflow channel 201 and the fluid discharge channel 101, and simultaneously designing the structures of the annular member 500, the valve sleeve 100, the first valve core 300, and the valve assembly 1000, a greater degree of design freedom can be provided for the inner diameter of the annular member 500 and the inner diameter of the main body 310.

[0069] refer to Figure 1 and Figure 2 For example, the second portion 120 of the valve sleeve 100 may include an annular locating portion 121 (see reference). Figure 2 The annular positioning part 121 can be located on the side of the second discharge channel 1012 near the valve seat structure 200, and the annular positioning part 121 can be configured to position the annular member 500. Thus, the annular positioning part 121 can be used to ensure that the annular member 500 is installed in place.

[0070] refer to Figure 1 and Figure 2In some examples, a first space Z1 is formed between the valve seat structure 200, the annular member 500, and the first valve core 300. The first space Z1 is configured to communicate with the fluid discharge passage 101 through a variable flow opening 01. The valve ring 1100 is configured to control the flow rate of fluid flowing from the first inflow passage 201 into the first space Z1. When not under fluid pressure, the valve ring 1100 can fit against the outlet of the first inflow passage 201, i.e., against the opening on the side of the first inflow passage 201 closest to the annular member 500, to prevent leakage. When under fluid pressure, the valve ring 1100 can move along the extension direction of the axis AX to open the outlet of the first inflow passage 201.

[0071] refer to Figure 1 and Figure 2 In some examples, the valve assembly 1000 further includes a pressure-applying element 1200, and the valve structure also includes a valve plate 2000 located on the side of the valve ring 1100 away from the valve seat structure 200. The pressure-applying element 1200 is located between the valve ring 1100 and the valve plate 2000. The valve plate 2000 is configured to provide an elastic force toward the valve ring 1100 to the pressure-applying element 1200. Thus, by configuring the valve plate 2000 and the pressure-applying element 1200, it is beneficial to regulate the damping force of the fluid flowing into the first inflow channel 201, thereby accelerating the reset speed of the valve ring 1100. (Reference) Figure 1 and Figure 2 For example, the valve plate 2000 may include an elastic material, which can undergo elastic deformation when the valve assembly 1000 moves toward the first valve core 300. As a result, the valve assembly 1000 can quickly return to its original position by means of the elastic force of the valve plate 2000.

[0072] refer to Figure 1 and Figure 2 It is understandable that by setting the pressure-applying component 1200 and the valve plate 2000, the preload of the valve ring 1100 is better. When there is internal pressure inside the valve structure, the valve plate 2000 can apply a force toward the valve ring 1100 to the pressure-applying component 1200, so that the switching of the valve ring 1100 is more precise and controllable, and the valve ring 1100 can quickly reset and close the outlet of the first inflow channel 201.

[0073] For example, the valve structure can be applied to single-valve fully automatic vibration dampers or dual-valve fully automatic vibration dampers. In the case of a dual-valve fully automatic vibration damper, the rapid reset of the valve ring 1100 helps improve the damper's performance.

[0074] refer to Figure 1 and Figure 2For example, the force applied to the valve ring 1100 by the pressure member 1200 can be adjusted by changing at least one of the following: the number of valve plates 2000, the size of the valve plates 2000, the size of the pressure member 1200, the weight of the valve plates 2000, the weight of the pressure member 1200, the material of the valve plates 2000, and the material of the pressure member 1200. It is understood that this disclosure is not limiting, and the force applied to the valve ring 1100 by the pressure member 1200 can also be adjusted as needed by changing other properties of the valve plates 2000 and / or the pressure member 1200. Therefore, the valve structure design has a high degree of freedom, and the damping force range of the valve structure can be easily adjusted according to different scenarios.

[0075] refer to Figure 1 and Figure 2 For example, the surface of the pressure-applying member 1200 facing the valve ring 1100 includes a flat surface to facilitate the application of a uniform force to the valve ring 1100. For example, the surface of the pressure-applying member 1200 facing the valve ring 1100 is generally flat, such as not including obvious protrusions or depressions.

[0076] refer to Figure 1 and Figure 2 For example, in a direction parallel to the axis AX, the outer edge of the valve plate 2000 can overlap with the pressure-applying member 1200, and the inner edge of the valve plate 2000 can overlap with the third valve core 600.

[0077] refer to Figure 1 and Figure 2 In some examples, the valve structure also includes a connecting structure 700, which is connected to the side of the valve seat structure 200 away from the annular member 500. A second inflow channel 701 is formed on the connecting structure 700, which communicates with the first inflow channel 201. The connecting structure 700 is configured to connect to a vibration damping element. Therefore, the connection structure 700 can be used to connect to a vibration damping element, which helps improve the adaptability of the valve structure to different vibration damping elements.

[0078] For example, the valve structure can be connected to a structure such as the cylinder in the shock absorber via the connecting structure 700.

[0079] Figure 1 and Figure 2 The schematic diagram illustrates that the connecting structure 700 and the valve seat structure 200 are independent separate components to facilitate assembly between parts. However, this disclosure is not limited to this. For example, the connecting structure and the valve seat structure can also be integrally formed.

[0080] Figure 1 and Figure 2The diagram schematically illustrates a valve structure including a valve seat structure 200 and a connecting structure 700. However, this disclosure is not limiting. For example, only the valve seat structure may be provided, without the connecting structure. For example, in the case of only providing a valve seat structure, the valve seat structure can be used to connect with a vibration damping element, and this disclosure is not limiting in any way.

[0081] refer to Figure 1 and Figure 2 In some examples, the throttling area of ​​the first inflow channel 201 is not less than the throttling area of ​​the second inflow channel 701. For example, the throttling area can be the area at the point of minimum cross-section in the inflow channel. By setting the throttling area of ​​the first inflow channel 201 to be greater than or equal to the throttling area of ​​the second inflow channel 701, the fluid will not be throttled at the first inflow channel 201 after flowing in from the second inflow channel 701, which is beneficial to achieving a smaller damping force.

[0082] refer to Figure 1 and Figure 2 For example, the first inflow channel 201 can be set to one or more. When the first inflow channel 201 is set to multiple, the throttling area of ​​the first inflow channel 201 can be the sum of the throttling areas of the multiple first inflow channels 201.

[0083] refer to Figure 1 and Figure 2 In some examples, the second inflow channel 701 is located on the side of the third valve core 600 away from the second valve core 400, and the axis AX of the valve sleeve 100 passes through the second inflow channel 701. This facilitates a more uniform distribution of the hydraulic force of the fluid, simplifies the assembly process, and ensures accuracy.

[0084] refer to Figure 1 and Figure 2 In some examples, the annular member 500 is configured to expose at least a portion of the surface of the third valve core 600 facing the first valve core 300. The annular member 500 may expose only a portion of the surface of the third valve core 600 facing the first valve core 300, or it may expose the entire surface of the third valve core 600 facing the first valve core 300. Thus, in conjunction with the foregoing examples, the radial dimension of the inner wall of the annular member 500 can be adjusted as needed to adapt to different operating conditions.

[0085] refer to Figure 1 and Figure 2For example, the annular member 500 includes a clearance surface 510 facing the third valve core 600, which intersects with but is not perpendicular to the extension direction of the axis AX. By designing the clearance surface 510 to be inclined with a slope, more installation space can be provided for the third valve core 600, and the valve ring 1100 and the pressure member 1200 in the valve assembly 1000 can be prevented from colliding with the annular member 500 during movement.

[0086] refer to Figure 1 and Figure 2 In some examples, a second space Z2 is formed between the valve seat structure 200 and the connecting structure 700, and the first inflow channel 201 and the second inflow channel 701 are connected through the second space Z2. Thus, fluid flowing in from the first inflow channel 201 can flow into the second inflow channel 701 through the second space Z2.

[0087] refer to Figure 1 and Figure 2 In some examples, the end of the connection structure 700 away from the valve sleeve 100 includes a connection portion 710 (see reference). Figure 2 The connecting portion 710 surrounds the second inflow channel 701 and is configured to connect with the vibration damping element. The valve structure also includes a seal 800, which is sleeved outside the connecting portion 710. Thus, by providing the connecting portion 710 and the seal 800 sleeved outside the connecting portion 710, the connection reliability between the valve structure and the vibration damping element can be improved, preventing fluid leakage.

[0088] At least one embodiment of this disclosure provides a vibration damper that includes the valve structure in any of the above examples.

[0089] Since the vibration damper according to the embodiments of this disclosure includes the valve structure in the above example, it also has corresponding beneficial technical effects, which will not be described in detail here.

[0090] The following points need to be noted: The accompanying drawings of the embodiments of this disclosure only involve structures that are relevant to the embodiments of this disclosure, and other structures can be referred to in the general design; in the absence of conflict, features of the same embodiment and different embodiments of this disclosure can be combined with each other.

[0091] The above description is merely an exemplary embodiment of this disclosure and is not intended to limit the scope of protection of this disclosure, which is determined by the appended claims.

Claims

1. A valve structure, comprising: The valve sleeve has a fluid discharge passage, the outlet of which is directly connected to the external space; A valve seat structure is disposed opposite to the valve sleeve along the extension direction of the axis of the valve sleeve, and the valve seat structure includes a first inflow channel; The first valve core is at least partially located within the valve sleeve; The second valve core is located on the side of the first valve core away from the valve seat structure; The third valve core is inserted into the valve seat structure along the extension direction of the axis. A valve assembly is sleeved outside the third valve core; the valve assembly includes a valve ring, the valve ring being configured to reciprocate along the extension direction of the axis to close or open the outlet of the first inflow channel; An annular component is located between the first valve core and the valve seat structure; in the extending direction of the axis, the annular component is disposed opposite to the first valve core; The first valve core is configured to reciprocate along the extension direction of the axis to form a variable flow opening with the annular member. In response to the opening of the outlet of the first inflow channel, the first inflow channel is connected to the fluid discharge channel through the variable flow opening. The second valve core is configured to face or move away from the first valve core to close or open the opening of the internal flow channel of the first valve core, and the first inflow channel communicates with the fluid discharge channel through the internal flow channel.

2. The valve structure according to claim 1, wherein, The channels opened on the valve seat structure include only the first inflow channel.

3. The valve structure according to claim 1, wherein, The outlet of the fluid discharge channel is located on the outer wall of the valve sleeve.

4. The valve structure according to any one of claims 1-3, wherein, The entrance to the first inflow channel is set open.

5. The valve structure according to any one of claims 1-3, wherein, The valve sleeve and the annular component are separate, independent parts.

6. The valve structure according to any one of claims 1-3, wherein, The valve sleeve includes a first part and a second part, wherein the second part is connected to the side of the first part facing the valve seat structure; The first part is configured to support the first valve core to reciprocate along the extension direction of the axis, and the second part is sleeved on the annular part; The fluid discharge channel includes a first discharge channel and a second discharge channel that are connected to each other. The first discharge channel is located in the first part, and the second discharge channel is located in the second part. The end of the second discharge channel away from the axis opens as the outlet of the fluid discharge channel.

7. The valve structure according to claim 6, wherein, The first discharge channel extends in a direction substantially parallel to the axis, while the second discharge channel extends in a direction intersecting the axis.

8. The valve structure according to claim 6, wherein, The first portion of the valve sleeve has a cavity between the surfaces of the annular member facing each other, the cavity being directly connected between the first discharge channel and the second discharge channel, and is configured to be directly connected to the variable flow opening.

9. The valve structure according to claim 6, wherein, The variable flow opening and the second discharge channel are arranged opposite each other in a direction perpendicular to the axis.

10. The valve structure according to any one of claims 1-3, wherein, A first space is formed between the valve seat structure, the annular member and the first valve core, and the first space is configured to communicate with the fluid discharge channel through the variable flow opening; The valve ring is configured to control the flow rate of fluid flowing from the first inflow channel into the first space.

11. The valve structure according to claim 10, wherein, The valve assembly also includes a pressure-applying component; The valve structure further includes a valve plate, which is located on the side of the valve ring away from the valve seat structure, and the pressure-applying element is located between the valve ring and the valve plate; The valve plate is configured to provide an elastic force toward the valve ring to the pressure-applying element.

12. The valve structure according to claim 10, wherein, The valve structure further includes a connecting structure, which is connected to the side of the valve seat structure away from the annular member; The connecting structure has a second inflow channel, which is connected to the first inflow channel; the connecting structure is configured to connect to a vibration damping element.

13. The valve structure according to claim 12, wherein, The throttling area of ​​the first inflow channel is not less than the throttling area of ​​the second inflow channel.

14. The valve structure according to claim 12, wherein, The second inflow channel is located on the side of the third valve core away from the second valve core, and the axis of the valve sleeve passes through the second inflow channel.

15. The valve structure according to claim 12, wherein, A second space is formed between the valve seat structure and the connecting structure, and the first inflow channel and the second inflow channel are connected through the second space.

16. The valve structure according to claim 12, wherein, The end of the connection structure away from the valve sleeve includes a connection portion surrounding the second inflow channel; the connection portion is configured to connect to the damping element. The valve structure also includes a sealing element, which is sleeved outside the connecting portion.

17. A vibration damper comprising a valve structure according to any one of claims 1-16.

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