Overflow valve plate for shock absorber, flow regulating valve, shock absorber and vehicle

Abstract

The invention discloses an overflow valve plate for a shock absorber, a flow regulating valve, the shock absorber and a vehicle. The overflow valve plate comprises a main body part, a flow regulating valve and a flow regulating valve, the guide part is connected to the main body part and protrudes out of at least one side of the main body part in the thickness direction, the guide part and the main body part jointly define a guide hole, and the overflow valve plate is suitable for being movably arranged on a supporting column in the shock absorber in a sleeving mode through the guide hole; and the overflow valve plate is guided by the supporting column to move in the axial direction of the shock absorber. According to the overflow valve plate provided by the embodiment of the invention, the guide part can be used for guiding the movement of the overflow valve plate, so that the inclination or shaking of the overflow valve plate during movement can be reduced, the movement of the overflow valve plate is more stable, and the stability of damping force adjustment of the shock absorber is favorably improved.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority to Chinese patent application No. "202411402669.3" filed by BYD Co., Ltd. on September 30, 2024, entitled "Shock Absorber and Vehicle". Technical Field

[0002] The present invention relates to the technical field of vehicles, and in particular to an overflow valve sheet for a shock absorber, a flow regulating valve, a shock absorber and a vehicle. Background Art

[0003] The flow regulating valve of the shock absorber in the related technology is usually provided with an overflow valve plate, and the overflow valve plate is movably mounted on a support column in the flow regulating valve to adjust the fluid flow of the flow regulating valve through the overflow valve plate, and the overflow valve plate can be used to assist in opening the flow regulating valve.

[0004] However, due to the unreasonable structural setting of the overflow valve plate in the related art, the overflow valve plate is prone to tilt or shake during movement, which will affect the stability of the adjustment of the damping force of the shock absorber. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a relief valve plate for a shock absorber, wherein the relief valve plate can use a guide portion to guide the movement of the relief valve plate, thereby reducing the tilt or shaking of the relief valve plate during movement, and the movement of the relief valve plate is more stable, which is conducive to improving the stability of the damping force adjustment of the shock absorber.

[0006] The present invention also provides a flow control valve having the overflow valve plate.

[0007] The invention also provides a shock absorber having the flow regulating valve.

[0008] The present invention also provides a vehicle having the shock absorber.

[0009] In order to achieve the above-mentioned purpose, according to the first aspect of the embodiment of the present invention, a relief valve plate for a shock absorber is proposed, comprising: a main body; a guide portion, the guide portion is connected to the main body and protrudes from at least one side of the main body in the thickness direction, the guide portion and the main body jointly define a guide hole, and the relief valve plate is suitable for being movably mounted on a support column in the shock absorber through the guide hole, so that the relief valve plate can move along the axial direction of the shock absorber under the guidance of the support column.

[0010] In this way, the overflow valve plate according to the embodiment of the present invention can use the guide part to guide the movement of the overflow valve plate, thereby reducing the tilt or shaking of the overflow valve plate during movement, and the movement of the overflow valve plate is smoother, which is beneficial to improving the stability of the damping force adjustment of the shock absorber.

[0011] According to some embodiments of the present invention, along the axial direction of the overflow valve plate, the length of the guide portion is L, and the thickness of the main body portion is W; wherein L and W satisfy L>2D.

[0012] According to some embodiments of the present invention, the guide portion is disposed on one side of the main body portion in a thickness direction.

[0013] According to some embodiments of the present invention, the guide portion is provided with a first rounded surface, the first rounded surface extends along the circumference of the guide hole, and a side of the guide portion away from the main body portion and an inner side wall of the guide hole are transitioned through a circular arc of the first rounded surface.

[0014] According to some embodiments of the present invention, the main body is provided with a second rounded surface, the second rounded surface extends along the circumference of the guide hole, and a side of the main body away from the guide portion and an inner wall of the guide hole are transitioned through a circular arc of the second rounded surface.

[0015] According to some embodiments of the present invention, there are multiple guide parts, and the multiple guide parts include a first guide part and a second guide part, the first guide part is arranged on one side of the thickness direction of the main body, and the second guide part is arranged on the other side of the thickness direction of the main body.

[0016] According to some embodiments of the present invention, the first guide portion is provided with a third rounded surface, the third rounded surface extends along the circumference of the guide hole, and the side of the first guide portion away from the main body portion and the inner wall of the guide hole are transitioned through a circular arc of the third rounded surface; and / or, the second guide portion is provided with a fourth rounded surface, the fourth rounded surface extends along the circumference of the guide hole, and the side of the second guide portion away from the main body portion and the inner wall of the guide hole are transitioned through a circular arc of the fourth rounded surface.

[0017] According to the second aspect of the present invention, an embodiment of a flow regulating valve for a shock absorber is proposed, comprising: a relief valve seat; a relief valve body, the relief valve body being movably arranged on one side of the relief valve seat, and one of the relief valve seat and the relief valve body being provided with a support column; according to the relief valve plate described in the embodiment of the first aspect of the present invention, the relief valve plate is arranged between the relief valve seat and the relief valve body, and the guide hole is sleeved on the support column.

[0018] According to the flow regulating valve described in the embodiment of the second aspect of the present invention, by utilizing the overflow valve plate described in the embodiment of the first aspect of the present invention, the overflow valve plate can utilize the guide part to guide the movement of the overflow valve plate, thereby reducing the inclination or shaking of the overflow valve plate during movement, and the movement of the overflow valve plate is more stable, which is beneficial to improving the stability of the damping force adjustment of the shock absorber.

[0019] According to some embodiments of the present invention, the support column and the guide hole are loosely matched, and the distance between the outer peripheral surface of the support column and the inner side wall of the guide hole is D, and D satisfies 0.02mm≤D≤0.15mm.

[0020] According to some embodiments of the present invention, the flow regulating valve further includes: a magnetic component, which is arranged on a side of the overflow valve seat facing the overflow valve plate, and the magnetic component generates a magnetic force to attract the overflow valve plate.

[0021] According to some embodiments of the present invention, the flow regulating valve further includes: a magnetic regulating member, which is disposed on one side of the magnetic member, and is used to adjust the magnetic attraction force of the magnetic member on the overflow valve plate.

[0022] According to some embodiments of the present invention, the overflow valve seat is constructed with a first flow channel, which is suitable for communicating with the compression chamber of the shock absorber; and a second flow channel is formed between the overflow valve plate and the overflow valve body, and a third flow channel is formed between the overflow valve plate and the overflow valve seat, and the second flow channel and the third flow channel are respectively communicated with the first flow channel and are both connected with the recovery chamber of the shock absorber; wherein the second flow channel and / or the third flow channel are opened and closed by the movement of the overflow valve body.

[0023] According to some embodiments of the present invention, the overflow valve plate is configured with at least one communicating hole, and the second flow channel is connected to the first flow channel through the communicating hole.

[0024] According to a third aspect of the present invention, a shock absorber is proposed, comprising: a cylinder; a piston, the piston is movably arranged in the cylinder, and the piston separates a compression chamber and a recovery chamber in the cylinder; a flow regulating valve according to the second aspect of the present invention, the flow regulating valve is arranged in the piston and is respectively connected to the compression chamber and the recovery chamber; a control valve, the control valve is arranged in the piston, and the control valve adjusts the fluid flow between the compression chamber and the recovery chamber by controlling the flow regulating valve.

[0025] According to the shock absorber described in the third aspect embodiment of the present invention, by utilizing the flow regulating valve described in the second aspect embodiment of the present invention, the inclination or shaking of the overflow valve plate during movement can be smaller, and the movement of the overflow valve plate is smoother, which is beneficial to improving the stability of the damping force adjustment of the shock absorber.

[0026] According to a fourth aspect of the present invention, a vehicle is provided, comprising the shock absorber according to the third aspect of the present invention.

[0027] According to the vehicle described in the fourth aspect of the embodiment of the present invention, by utilizing the shock absorber described in the third aspect of the embodiment of the present invention, the overflow valve plate can have a smaller tilt or shake during movement, and the movement of the overflow valve plate is smoother, which is beneficial to improving the stability of the damping force adjustment of the shock absorber.

[0028] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 is a schematic structural diagram of a shock absorber according to an embodiment of the present invention; Figure 2 is a structural schematic diagram of a flow control valve according to an embodiment of the present invention, when the initial position is in an open valve state and the working condition is restored; Figure 3 is a structural schematic diagram of a compression condition when the flow control valve according to an embodiment of the present invention is in an open valve state at an initial position; Figure 4 It is a structural schematic diagram of the flow control valve according to an embodiment of the present invention, when the initial position is in a closed valve state and the working condition is restored; Figure 5 is a structural schematic diagram of a compression condition when the flow control valve according to an embodiment of the present invention is in a closed valve state at an initial position; Figure 6 is an exploded diagram of a flow control valve according to an embodiment of the present invention; Figure 7 is a cross-sectional view of the flow control valve according to an embodiment of the present invention when the second flow channel is opened; Figure 8 is a cross-sectional view of the flow control valve according to an embodiment of the present invention when the third flow channel is opened; Fig. 9 Schematic diagram of the coordination of the overflow valve seat, the overflow valve plate and the magnetic attraction member according to an embodiment of the present invention; Fig.10is a schematic structural diagram of a relief valve plate according to an embodiment of the present invention; Fig.11 is a cross-sectional view of a relief valve plate according to an embodiment of the present invention.

[0030] Reference numerals: 1. Shock absorber; 100, cylinder; 110, inner cylinder; 111, compression chamber; 112, recovery chamber; 120, outer cylinder; 121, liquid storage chamber; 130, bottom valve assembly; 200, piston; 300, flow control valve; 310, overflow valve body; 311, second flow channel; 320, overflow valve seat; 321, first flow channel; 322, third flow channel; 330, overflow valve plate; 331, connecting hole; 332, main body; 3321, second rounded surface; 333, guide part; 3331, first rounded surface; 334, guide hole; 340, support column; 350, magnetic attraction member; 352, magnetic adjustment member; 400. Control valve. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0033] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0034] In the description of the present invention, "plurality" means two or more than two, and "several" means one or more.

[0035] A vibration absorber 1 according to an embodiment of the present invention will be described below with reference to the drawings.

[0036] like Figure 1-Figure 5 As shown, the shock absorber 1 according to the embodiment of the present invention includes a cylinder 100 , a piston 200 , a flow regulating valve 300 and a control valve 400 .

[0037] The piston 200 is movably disposed on the cylinder 100, and the piston 200 separates a compression chamber 111 and a recovery chamber 112 in the cylinder 100. The flow regulating valve 300 is disposed in the piston 200 and is respectively connected to the compression chamber 111 and the recovery chamber 112. The control valve 400 is disposed on the piston 200. The control valve 400 adjusts the fluid flow between the compression chamber 111 and the recovery chamber 112 by controlling the flow regulating valve 300.

[0038] The compression chamber 111 and the recovery chamber 112 may store fluid, such as fluid with a certain pressure and inert gas.

[0039] Among them, the shock absorber 1 also includes a bottom valve assembly 130, the cylinder 100 includes an outer cylinder 120 and an inner cylinder 110, the inner cylinder 110 extends into the outer cylinder 120, and a liquid storage chamber 121 is formed between the outer cylinder 120 and the inner cylinder 110. The piston 200 is movably arranged in the inner cylinder 110 and separates a compression chamber 111 and a recovery chamber 112 in the inner cylinder 110. The bottom valve assembly 130 is installed on the inner cylinder 110 or the outer cylinder 120, and the fluid in the compression chamber 111 flows into the liquid storage chamber 121 through the bottom valve assembly 130, or the fluid in the liquid storage chamber 121 flows into the compression chamber 111 through the bottom valve assembly 130.

[0040] In the present invention, the flow control valve 300 is in an open valve state at the initial position, which means that the flow control valve 300 is in an open initial state when there is no external pressure squeezing the flow control valve 300 and no fluid flows in the flow control valve 300. Also, the flow control valve 300 is in a closed valve state at the initial position, which means that the flow control valve 300 is squeezed by an external force, and the overflow valve seat 320 and the overflow valve body 310 of the flow control valve 300 are in abutment and closed initial state.

[0041] For example, in some embodiments, when the valve core assembly 500 is energized, it squeezes the flow regulating valve 300. At this time, the flow regulating valve 300 is in an open valve state at the initial position, which means that the valve core assembly 500 is not energized and there is no fluid flowing in the flow regulating valve 300, and the flow regulating valve 300 is in an open initial state. At this time, the flow regulating valve 300 is in a balanced state; and, the flow regulating valve 300 is in a closed valve state at the initial position, which means that the valve core assembly 500 is energized and the overflow valve seat 320 and the overflow valve body 310 of the flow regulating valve 300 are in abutment and closed initial state.

[0042] Alternatively, in other embodiments, the flow regulating valve 300 will be squeezed when the valve core assembly 500 is not energized. At this time, the flow regulating valve 300 is in an open valve state at the initial position, which means that the valve core assembly 500 is energized and there is no fluid flowing in the flow regulating valve 300, and the flow regulating valve 300 is in an open initial state. At this time, the flow regulating valve 300 is in a balanced state; and, the flow regulating valve 300 is in a closed valve state at the initial position, which means that the valve core assembly 500 is not energized and the overflow valve seat 320 and the overflow valve body 310 of the flow regulating valve 300 are in an abutment and closed initial state.

[0043] According to the shock absorber 1 of the embodiment of the present invention, the piston 200 is movably arranged on the cylinder 100, and the piston 200 separates the compression chamber 111 and the recovery chamber 112 in the cylinder 100. The flow regulating valve 300 is arranged on the piston 200 and is connected to the compression chamber 111 and the recovery chamber 112 respectively.

[0044] In this way, when the shock absorber 1 is in a compression condition, the piston 200 compresses the volume of the compression chamber 111, and the volume of the recovery chamber 112 will increase accordingly. At this time, the fluid in the compression chamber 111 will flow to the recovery chamber 112 through the flow regulating valve 300, and when the shock absorber 1 is in a recovery condition, the piston 200 compresses the volume of the recovery chamber 112, and the volume of the compression chamber 111 will increase accordingly. At this time, the fluid in the recovery chamber 112 will flow to the compression chamber 111 through the flow regulating valve 300. In the above process, by repeatedly changing the moving direction of the piston 200, the fluid repeatedly flows between the compression chamber 111 and the recovery chamber 112, and the friction between the fluid and the shock absorber 1 generates heat, which can convert the kinetic energy of the piston 200 into the thermal energy of the fluid, thereby reducing the power of the piston 200.

[0045] Therefore, when the cylinder 100 and the piston 200 of the shock absorber 1 are respectively connected to two objects (such as a vehicle frame and a wheel), when one of the two objects vibrates, the vibration force transmitted to the other object can be reduced by the presence of the shock absorber 1, thereby achieving a vibration reduction effect.

[0046] In addition, the control valve 400 is disposed on the piston 200 , and the control valve 400 adjusts the fluid flow between the compression chamber 111 and the recovery chamber 112 by controlling the flow regulating valve 300 .

[0047] In this way, when the piston 200 moves, the control valve 400 can be used to adjust the fluid flow rate flowing back and forth between the compression chamber 111 and the recovery chamber 112 at the same time. When the fluid flow rate flowing through the flow regulating valve 300 is large, the damping force of the shock absorber 1 can be small, that is, the shock absorber 1 can appear "soft", and when the fluid flow rate flowing through the flow regulating valve 300 is small, the damping force of the shock absorber 1 can be large, that is, the shock absorber 1 can appear "hard", and the control valve 400 can continuously adjust the size of the fluid flow rate flowing through the flow regulating valve 300, so that the shock absorber 1 can achieve continuous adjustment of the damping force, which is beneficial to improving the ride comfort and handling stability of the vehicle.

[0048] Moreover, by controlling the flow regulating valve 300 through the control valve 400, the fluid flow structure between the compression chamber 111 and the recovery chamber 112 of the shock absorber 1 is simple, thereby simplifying the adjustment structure of the damping force of the shock absorber 1, so as to facilitate the adjustment of the damping force of the shock absorber 1, and the adjustment is simpler and more convenient.

[0049] In this way, the shock absorber 1 according to the embodiment of the present invention can continuously adjust the damping force by adjusting the fluid flow between the compression chamber 111 and the restoring chamber 112, which is beneficial to improving the riding comfort and the handling performance of the vehicle. In addition, the shock absorber 1 has a simple structure and is easy to adjust.

[0050] The overflow valve plate 330 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0051] like Figure 1-Figure 11 As shown, the overflow valve plate 330 according to the embodiment of the present invention includes a main body portion 332 and a guide portion 333 .

[0052] The guide portion 333 is connected to the main body portion 332 and protrudes from at least one side of the main body portion 332 in the thickness direction. The guide portion 333 and the main body portion 332 jointly define a guide hole 334, and the overflow valve plate 330 is suitable for being movably mounted on the support column 340 in the shock absorber 1 through the guide hole 334, so that the overflow valve plate 330 moves along the axial direction of the shock absorber 1 under the guidance of the support column 340.

[0053] Among them, the guide portion 333 is connected to the main body portion 332 and protrudes from at least one side of the main body portion 332 in the thickness direction, which means that the guide portion 333 can be only arranged on one side of the thickness direction of the main body portion 332, or the guide portion 333 can be arranged on both opposite sides of the thickness direction of the main body portion 332.

[0054] Specifically, the guide portion 333 can be arranged on the side of the main body 332 in the axial direction of the cylinder 100 facing the overflow valve body 310; or, the guide portion 333 can be arranged on the side of the main body 332 in the axial direction of the cylinder 100 facing the overflow valve seat 320; or, the guide portion 333 can be arranged on both sides of the main body 332 in the axial direction of the cylinder 100.

[0055] In addition, when the main body 332 is provided with guide portions 333 on both sides of the opposite sides in the thickness direction, the axial lengths of the guide portions 333 on both sides of the main body 332 may be the same; or, the axial length of the guide portion 333 on the side of the main body 332 facing the overflow valve body 310 may be greater than the length of the guide portion 333 on the side of the main body 332 facing the overflow valve seat 320; or again, the axial length of the guide portion 333 on the side of the main body 332 facing the overflow valve seat 320 may be greater than the length of the guide portion 333 on the side of the main body 332 facing the overflow valve body 310.

[0056] By providing a guide portion 333, and the guide portion 333 and the main body portion 332 jointly defining a guide hole 334, the matching area between the overflow valve plate 330 and the support column 340 can be increased, so that the overflow valve plate 330 can move more smoothly along the support column 340, and the overflow valve plate 330 is not easy to tilt relative to the support column 340. The overflow valve plate 330 can still remain stable after tens of millions of times of opening and closing the valve up and down, thereby further improving the stability of the damping force adjustment of the shock absorber 1.

[0057] In this way, the overflow valve plate 330 according to the embodiment of the present invention can use the guide part 333 to guide the movement of the overflow valve plate 330, thereby reducing the tilt or shaking of the overflow valve plate 330 during movement, and the movement of the overflow valve plate 330 is more stable, which is beneficial to improving the stability of the damping force adjustment of the shock absorber 1.

[0058] In some specific embodiments of the present invention, Fig.11 As shown, along the axial direction of the overflow valve plate 330 , the length of the guide portion 333 is L, and the thickness of the main body portion 332 is W; wherein L and W satisfy L>2D.

[0059] For example, L can be greater than 2D, 2.5D, 3D, 3.5D or 4D. This arrangement can prevent the axial extension length of the guide portion 333 along the overflow valve plate 330 from being too short. The contact area between the guide portion 333 and the support column 340 can be larger and the cooperation is more stable, so that the overflow valve plate 330 can move smoothly along the support column 340, further improving the stability of the damping force adjustment of the shock absorber 1.

[0060] Preferably, the length of the guide portion 333 can be 3 times the thickness of the main body 332. In this way, the length of the guide portion 333 will not be too long, the space occupied by the overflow valve plate 330 will not be too large, and assembly is convenient. The processing accuracy of the guide portion 333 will not be too high, thereby avoiding excessively high processing costs of the overflow valve plate 330.

[0061] In some specific embodiments of the present invention, Fig.10 and Fig.11 As shown, the guide portion 333 is arranged on one side of the main body portion 332 in the thickness direction, which can simplify the arrangement structure of the guide portion 333 and further simplify the structure of the overflow valve plate 330, making it easier to process and manufacture.

[0062] Furthermore, if Fig.10 and Fig.11 As shown, the guide portion 333 is provided with a first rounded surface 3331 , which extends along the circumference of the guide hole 334 , and a side of the guide portion 333 away from the main body 332 and an inner wall of the guide hole 334 are transitioned into an arc through the first rounded surface 3331 .

[0063] For example, the guide portion 333 is arranged on the side of the main body 332 facing the overflow valve body 310, so that when the overflow valve plate 330 moves along the support column 340 toward the overflow valve body 310, the end of the guide portion 333 is not easy to scratch the support column 340, and the friction force can be smaller, and the overflow valve plate 330 and the support column 340 are less likely to wear.

[0064] Alternatively, the guide portion 333 is arranged on the side of the main body 332 facing the overflow valve seat 320, so that when the overflow valve plate 330 moves along the support column 340 toward the overflow valve seat 320, the end of the guide portion 333 is not easy to scratch the support column 340, and the friction force can be smaller, and the overflow valve plate 330 and the support column 340 are less likely to wear.

[0065] In some specific embodiments of the present invention, Fig.11 As shown, the main body 332 is provided with a second rounded surface 3321 , which extends along the circumference of the guide hole 334 , and a side of the main body 332 away from the guide portion 333 and the inner wall of the guide hole 334 are transitioned into an arc through the second rounded surface 3321 .

[0066] For example, when the guide portion 333 is arranged on the side of the main body 332 facing the overflow valve body 310, when the overflow valve plate 330 moves along the support column 340 toward the overflow valve seat 320, the end of the main body 332 is not easy to scratch the support column 340, and the friction force can be smaller, and the overflow valve plate 330 and the support column 340 are less likely to wear.

[0067] Alternatively, when the guide portion 333 is arranged on the side of the main body 332 facing the overflow valve seat 320, when the overflow valve plate 330 moves along the support column 340 toward the overflow valve body 310, the end of the main body 332 is not easy to scratch the support column 340, and the friction force can be smaller, and the overflow valve plate 330 and the support column 340 are less likely to wear.

[0068] In some specific embodiments of the present invention, there are multiple guide portions 333, and the multiple guide portions 333 include a first guide portion (not shown in the figure) and a second guide portion (not shown in the figure).

[0069] The first guide portion is disposed on one side of the main body 332 in the thickness direction, and the second guide portion is disposed on the other side of the main body 332 in the thickness direction. In other words, guide portions 333 are disposed on both sides of the main body 332 in the thickness direction, which can further improve the stability of the cooperation between the overflow valve plate 330 and the support column 340, and the overflow valve plate 330 is less likely to shake and tilt, and moves more smoothly.

[0070] Furthermore, the first guide portion is provided with a third rounded surface (not shown in the figure), the third rounded surface extends along the circumference of the guide hole 334, and the side of the first guide portion away from the main body portion 332 and the inner wall of the guide hole 334 are transitioned through the arc of the third rounded surface; and / or, the second guide portion is provided with a fourth rounded surface (not shown in the figure), the fourth rounded surface extends along the circumference of the guide hole 334, and the side of the second guide portion away from the main body portion 332 and the inner wall of the guide hole 334 are transitioned through the arc of the fourth rounded surface.

[0071] For example, the first guide portion may be disposed on a side of the main body 332 facing the relief valve body 310 , and the second guide portion may be disposed on a side of the main body 332 facing the relief valve seat 320 .

[0072] In this way, when the overflow valve plate 330 moves along the support column 340 toward the overflow valve body 310, the end of the first guide portion is not easy to scratch the support column 340, and when the overflow valve plate 330 moves along the support column 340 toward the overflow valve seat 320, the end of the second guide portion is also not easy to scratch the support column 340. The overflow valve plate 330 and the support column 340 are less likely to wear, and the friction between the overflow valve plate 330 and the support column 340 can be smaller, which is more convenient for the movement of the overflow valve plate 330.

[0073] The flow control valve 300 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0074] like Figure 1-Figure 8 As shown, the flow regulating valve 300 includes a relief valve seat 320, a relief valve body 310 and a relief valve plate 330 according to the above embodiment of the present invention.

[0075] The overflow valve body 310 is movably disposed on one side of the overflow valve seat 320 , and one of the overflow valve seat 320 and the overflow valve body 310 is provided with a support column 340 , the overflow valve plate 330 is disposed between the overflow valve seat 320 and the overflow valve body 310 , and the guide hole 334 is sleeved on the support column 340 .

[0076] When the overflow valve body 310 and the overflow valve seat 320 are respectively in contact with the overflow valve plate 330, the flow regulating valve 300 is closed; and when at least one of the overflow valve body 310 and the overflow valve seat 320 is separated from the overflow valve plate 330, the flow regulating valve 300 is opened.

[0077] Specifically, the overflow valve seat 320 is constructed with a first flow channel 321, which is suitable for communicating with the compression chamber 111 of the shock absorber 1; and, a second flow channel 311 is formed between the overflow valve plate 330 and the overflow valve body 310, and a third flow channel 322 is formed between the overflow valve plate 330 and the overflow valve seat 320, the second flow channel 311 and the third flow channel 322 are respectively communicated with the first flow channel 321 and are both connected to the recovery chamber 112 of the shock absorber 1; wherein the second flow channel 311 and / or the third flow channel 322 are opened and closed by the movement of the overflow valve body 310.

[0078] Among them, when the second flow channel 311 is opened, the fluid between the compression chamber 111 and the recovery chamber 112 can flow through the first flow channel 321 and the second flow channel 311; when the third flow channel 322 is opened, the fluid between the compression chamber 111 and the recovery chamber 112 can flow through the first flow channel 321 and the third flow channel 322; when the second flow channel 311 and the third flow channel 322 are both opened, the fluid between the compression chamber 111 and the recovery chamber 112 can flow through the first flow channel 321 and the second flow channel 311, and can flow through the first flow channel 321 and the third flow channel 322.

[0079] By dividing the flow regulating valve 300 into the overflow valve body 310, the overflow valve plate 330 and the overflow valve seat 320, the control valve 400 can control the relative movement of the overflow valve body 310 relative to the overflow valve seat 320, so that the second flow channel 311 and the third flow channel 322 can be closed. At this time, the fluid in the recovery chamber 112 and the compression chamber 111 cannot flow through the first flow channel 321 and the second flow channel 311 or the third flow channel 322; or, the second flow channel 311 and / or the third flow channel 322 can be opened so that the fluid in the recovery chamber 112 and the compression chamber 111 can flow through the first flow channel 321 and the second flow channel 311 and / or the third flow channel 322, and by controlling the opening and closing size of the second flow channel 311 and / or the third flow channel 322, the flow rate of the fluid between the compression chamber 111 and the recovery chamber 112 can be changed to adjust the damping force of the shock absorber 1, and the pressure between the compression chamber 111 and the recovery chamber 112 can be balanced.

[0080] In addition, by adding a movable overflow valve plate 330 between the overflow valve body 310 and the overflow valve seat 320, when the flow regulating valve 300 is in the closed state at the initial position and the shock absorber 1 is in the recovery state, the overflow valve body 310 and the overflow valve seat 320 can first abut on the opposite sides of the overflow valve plate 330, and the fluid can push open the overflow valve body 310, and the overflow valve body 310 and the overflow valve plate 330 move relative to each other, and the second flow channel 311 is opened. At this time, the fluid in the recovery chamber 112 can pass through the second flow channel 311 and the first flow channel 321. Flows into the compression chamber 111; when the flow regulating valve 300 is in a closed state at the initial position and the shock absorber 1 is in a compression condition, the overflow valve body 310 and the overflow valve seat 320 can first abut against the opposite sides of the overflow valve plate 330, and the fluid can push open the overflow valve body 310 and the overflow valve plate 330, that is, the overflow valve plate 330 and the overflow valve body 310 move together relative to the overflow valve seat 320, and the third flow channel 322 opens. At this time, the fluid in the compression chamber 111 can flow into the recovery chamber 112 through the third flow channel 322 and the first flow channel 321.

[0081] With such an arrangement, when the shock absorber 1 is in a compression condition or a recovery condition, the overflow valve body 310 and the overflow valve seat 320 can be more easily moved relative to each other, that is, the overflow valve plate 330 can assist in opening the overflow valve body 310 and the overflow valve seat 320 to facilitate the connection between the compression chamber 111 and the recovery chamber 112.

[0082] According to the flow regulating valve 300 of the embodiment of the present invention, by utilizing the overflow valve plate 330 according to the above-mentioned embodiment of the present invention, the overflow valve plate 330 can utilize the guide part 333 to guide the movement of the overflow valve plate 330, thereby reducing the inclination or shaking of the overflow valve plate 330 during movement, and the movement of the overflow valve plate 330 is more stable, which is beneficial to improving the stability of the damping force adjustment of the shock absorber 1.

[0083] In some specific embodiments of the present invention, Figure 8 , Fig. 9 and Fig.11 As shown, the overflow valve plate 330 is configured with at least one communicating hole 331 , and the second flow channel 311 is communicated with the first flow channel 321 through the communicating hole 331 .

[0084] In this way, when the overflow valve body 310 is separated from the overflow valve plate 330 and the overflow valve seat 320 is in contact with the overflow valve plate 330, that is, the second flow channel 311 is opened and the third flow channel 322 is closed, the second flow channel 311 can be connected with the first flow channel 321 through the connecting hole 331, and the structural setting is more reasonable, so that the fluid in the recovery chamber 112 and the compression chamber 111 can flow through the second flow channel 311, the connecting hole 331 and the first flow channel 321.

[0085] In addition, there may be a plurality of communicating holes 331 , and the plurality of communicating holes 331 may be arranged at intervals along the circumferential direction of the overflow valve plate 330 .

[0086] In some specific embodiments of the present invention, the support column 340 and the guide hole 334 are clearance-matched, and the distance between the outer circumference of the support column 340 and the inner wall of the guide hole 334 is D, and D satisfies 0.02mm≤D≤0.15mm.

[0087] For example, the distance D between the outer circumference of the support column 340 and the inner wall of the guide hole 334 can be 0.02mm, 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.1mm, 0.11mm, 0.12mm, 0.13mm, 0.14mm or 0.15mm.

[0088] Preferably, the single-side gap between the outer peripheral surface of the support column 340 and the inner wall of the guide hole 334 can be 0.05mm-0.10mm, so that the overflow valve plate 330 can move smoothly in the up and down axial direction, not easy to tilt, and not easy to wear and fail between the shaft holes.

[0089] In some specific embodiments of the present invention, Figure 6 and Fig. 9 As shown, the flow control valve 300 further includes a magnetic element 350 .

[0090] The magnetic member 350 is disposed on a side of the overflow valve seat 320 facing the overflow valve plate 330 , and the magnetic member 350 generates a magnetic attraction force to attract the overflow valve plate 330 .

[0091] When the support column 340 is constructed on the overflow valve seat 320 , the magnetic attraction component 350 can be sleeved on the support column 340 .

[0092] The overflow valve plate 330 can be made of iron-containing material, and the magnetic member 350 is provided to attract the overflow valve plate 330 to the overflow valve seat 320, so that the overflow valve plate 330 can be sealed against the overflow valve seat 320 to quickly build pressure. In addition, the magnetic member 350 can also absorb and filter metal impurities in the shock absorber 1, so that the operation of the shock absorber 1 is more stable and reliable.

[0093] Furthermore, if Figure 6 and Fig. 9 As shown, the flow control valve 300 further includes a magnetic adjustment member 352 .

[0094] The magnetic force adjusting member 352 is disposed on one side of the magnetic attraction member 350 , and the magnetic force adjusting member 352 is used to adjust the magnetic attraction force of the magnetic attraction member 350 on the overflow valve plate 330 .

[0095] For example, the magnetic adjustment member 352 can be arranged on the side of the magnetic member 350 facing the overflow valve plate 330, or the magnetic adjustment member 352 can be arranged on the side of the magnetic member 350 facing away from the overflow valve plate 330. By adjusting the axial extension of the magnetic adjustment member 352 along the support column 340, the magnetic attraction of the magnetic member 350 on the overflow valve plate 330 can be increased or decreased to meet the use requirements of different shock absorbers 1. This arrangement can prevent the magnetic attraction of the magnetic member 350 on the overflow valve plate 330 from being too large, and prevent the magnetic member 350 from excessively adsorbing the overflow valve plate 330, and at the same time prevent the magnetic attraction of the magnetic member 350 from being too small, so that the magnetic member 350 and the magnetic adjustment member 352 can more effectively adsorb and filter metal impurities in the shock absorber 1.

[0096] like Figure 1-Figure 5 As shown, the shock absorber 1 according to the embodiment of the present invention comprises a cylinder 100 , a piston 200 , a flow regulating valve 300 according to the above-mentioned embodiment of the present invention, and a control valve 400 .

[0097] According to the shock absorber 1 of the embodiment of the present invention, by utilizing the flow regulating valve 300 according to the above-mentioned embodiment of the present invention, the overflow valve plate 330 can be less tilted or shaken during movement, and the movement of the overflow valve plate 330 is more stable, which is beneficial to improving the stability of the damping force adjustment of the shock absorber 1.

[0098] The vehicle according to the embodiment of the present invention includes the shock absorber 1 according to the above-described embodiment of the present invention.

[0099] According to the vehicle of the embodiment of the present invention, by utilizing the shock absorber 1 according to the above embodiment, the overflow valve plate 330 can be less tilted or shaken during movement, and the movement of the overflow valve plate 330 is more stable, which is beneficial to improving the stability of the damping force adjustment of the shock absorber 1.

[0100] The overflow valve plate 330 for the shock absorber, the flow regulating valve 300, the shock absorber 1 and other components and operations of the vehicle according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail here.

[0101] In the description of this specification, the description with reference to the terms "specific embodiment", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0102] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A relief valve plate (330) for a shock absorber, characterized in that: include: Main body (332); A guide portion (333), the guide portion (333) being connected to the main body portion (332) and protruding from at least one side of the main body portion (332) in a thickness direction, the guide portion (333) and the main body portion (332) jointly defining a guide hole (334), and the overflow valve plate (330) being adapted to be movably sleeved on a support column (340) in the shock absorber (1) through the guide hole (334), so that the overflow valve plate (330) can move along the axial direction of the shock absorber (1) under the guidance of the support column (340).

2. The overflow valve plate (330) for a shock absorber according to claim 1, characterized in that: Along the axial direction of the overflow valve plate (330), the length of the guide portion (333) is L, and the thickness of the main body portion (332) is W; Among them, L and W satisfy L>2D.

3. The overflow valve plate (330) for a shock absorber according to claim 1, characterized in that: The guide portion (333) is arranged on one side of the main body portion (332) in the thickness direction.

4. The overflow valve plate (330) for a shock absorber according to claim 3, characterized in that: The guide portion (333) is provided with a first rounded surface (3331), the first rounded surface (3331) extending along the circumference of the guide hole (334), and a side of the guide portion (333) away from the main body portion (332) and an inner side wall of the guide hole (334) are transitioned in an arc through the first rounded surface (3331).

5. The overflow valve plate (330) for a shock absorber according to claim 3, characterized in that: The main body (332) is provided with a second rounded surface (3321), the second rounded surface (3321) extending along the circumference of the guide hole (334), and a side of the main body (332) away from the guide portion (333) and an inner side wall of the guide hole (334) are transitioned in an arc through the second rounded surface (3321).

6. The overflow valve plate (330) for a shock absorber according to claim 1, characterized in that: There are a plurality of guide portions (333), and the plurality of guide portions (333) include a first guide portion and a second guide portion, wherein the first guide portion is arranged on one side of the main body portion (332) in the thickness direction, and the second guide portion is arranged on the other side of the main body portion (332) in the thickness direction.

7. The overflow valve plate (330) for a shock absorber according to claim 6, characterized in that: The first guide portion is provided with a third rounded surface, the third rounded surface extends along the circumference of the guide hole (334), and a side of the first guide portion away from the main body portion (332) and an inner side wall of the guide hole (334) are transitioned through a circular arc of the third rounded surface; and / or, The second guide portion is provided with a fourth fillet surface, the fourth fillet surface extends along the circumference of the guide hole (334), and a side of the second guide portion away from the main body portion (332) and an inner side wall of the guide hole (334) are transitioned through a circular arc of the fourth fillet surface.

8. A flow control valve (300) for a shock absorber, characterized in that: include: Overflow valve seat (320); A relief valve body (310), the relief valve body (310) being movably disposed on one side of the relief valve seat (320), and one of the relief valve seat (320) and the relief valve body (310) being provided with a support column (340); According to any one of claims 1 to 7, the overflow valve plate (330) is arranged between the overflow valve seat (320) and the overflow valve body (310), and the guide hole (334) is sleeved on the support column (340).

9. The flow control valve (300) for a shock absorber according to claim 8, characterized in that: The support column (340) and the guide hole (334) are clearance-matched, and the distance between the outer peripheral surface of the support column (340) and the inner side wall of the guide hole (334) is D, and D satisfies 0.02mm≤D≤0.15mm.

10. The flow regulating valve (300) for a shock absorber according to claim 8, characterized in that: Also includes: A magnetic attraction member (350), the magnetic attraction member (350) being arranged on a side of the overflow valve seat (320) facing the overflow valve plate (330), the magnetic attraction member (350) generating a magnetic attraction force for attracting the overflow valve plate (330).

11. The flow regulating valve (300) for a shock absorber according to claim 10, characterized in that: Also includes: A magnetic force adjustment member (352), the magnetic force adjustment member (352) being arranged on one side of the magnetic attraction member (350), the magnetic force adjustment member (352) being used to adjust the magnetic attraction force of the magnetic attraction member (350) on the overflow valve plate (330).

12. The flow control valve (300) for a shock absorber according to claim 8, characterized in that: The overflow valve seat (320) is configured with a first flow channel (321), wherein the first flow channel (321) is suitable for communicating with the compression chamber (111) of the shock absorber (1); and A second flow channel (311) is formed between the overflow valve plate (330) and the overflow valve body (310), and a third flow channel (322) is formed between the overflow valve plate (330) and the overflow valve seat (320), the second flow channel (311) and the third flow channel (322) being respectively connected to the first flow channel (321) and are both connected to the recovery chamber (112) of the shock absorber (1); The second flow channel (311) and / or the third flow channel (322) are opened and closed by the movement of the overflow valve body (310).

13. The flow control valve (300) for a shock absorber according to claim 12, characterized in that: The overflow valve plate (330) is configured with at least one communicating hole (331), and the second flow channel (311) is connected to the first flow channel (321) through the communicating hole (331).

14. A shock absorber (1), characterized in that: include: Cylinder (100); A piston (200), the piston (200) being movably disposed on the cylinder (100), and the piston (200) separating a compression chamber (111) and a recovery chamber (112) in the cylinder (100); The flow regulating valve (300) according to any one of claims 8 to 13, wherein the flow regulating valve (300) is arranged in the piston (200) and is respectively connected to the compression chamber (111) and the recovery chamber (112); A control valve (400) is provided on the piston (200), and the control valve (400) adjusts the fluid flow between the compression chamber (111) and the recovery chamber (112) by controlling the flow regulating valve (300).

15. A vehicle, characterized in that: Comprising a vibration damper (1) according to claim 14.

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