Flow control valve for shock absorber, shock absorber and vehicle

Abstract

The utility model discloses a flow regulating valve used for a shock absorber, the shock absorber and a vehicle, the flow regulating valve comprises an overflow valve seat, the overflow valve seat is provided with a first flow channel, and the first flow channel is suitable for being communicated with a compression cavity of the shock absorber; the overflow valve body is movably arranged on the side, back on to the compression cavity, of the overflow valve seat; the overflow valve plate is movably arranged between the overflow valve body and the overflow valve seat, the overflow valve plate is provided with an overflow channel, and when the overflow valve seat and the overflow valve body abut against the overflow valve plate, the overflow channel is communicated with the first flow channel and a recovery cavity of the shock absorber. According to the flow regulating valve, the machining precision of the overflow channel can be improved, the overflow valve seat and the overflow valve body are tightly attached to the overflow valve block, flow resistance fluctuation is small when fluid flows through the overflow channel, and damping force of a shock absorber is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a flow regulating valve for a shock absorber, the shock absorber and a vehicle. Background Art

[0002] The shock absorber in the related technology is usually equipped with a flow regulating valve, and the flow regulating valve is provided with an overflow groove between the overflow valve seat or the overflow valve body and the overflow valve plate. When the fluid flow rate flowing through the flow regulating valve is small, the fluid can flow between the compression chamber and the recovery chamber through the overflow groove.

[0003] However, due to the unreasonable structural setting of the overflow groove in the relevant technology, the overflow groove itself has poor structural processing accuracy, and may affect the fit and seal between the overflow valve seat or the overflow valve body and the overflow valve plate, thereby causing large fluctuations in the flow resistance of the shock absorber and unstable damping force of the shock absorber. Utility Model Content

[0004] The present utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present utility model is to provide a flow control valve for a shock absorber, which can improve the machining accuracy of the overflow channel, and ensure that the overflow valve seat and the overflow valve body are tightly fitted with the overflow valve plate, thereby reducing the fluctuation of the flow resistance when the fluid flows through the overflow channel and making the damping force of the shock absorber more stable.

[0005] The utility model also provides a shock absorber with the flow regulating valve.

[0006] The utility model also provides a vehicle with the shock absorber.

[0007] In order to achieve the above-mentioned purpose, according to the first aspect embodiment of the present utility model, a flow regulating valve for a shock absorber is proposed, comprising: an overflow valve seat, the overflow valve seat being constructed with a first flow channel, the first flow channel being suitable for communicating with the compression chamber of the shock absorber; an overflow valve body, the overflow valve body being movably arranged on the side of the overflow valve seat facing away from the compression chamber; an overflow valve plate, the overflow valve plate being movably arranged between the overflow valve body and the overflow valve seat, the overflow valve plate being constructed with an overflow channel, and when the overflow valve seat and the overflow valve body are respectively in contact with the overflow valve plate, the overflow channel is respectively communicated with the first flow channel and the recovery chamber of the shock absorber.

[0008] The flow regulating valve according to the embodiment of the utility model can improve the processing accuracy of the overflow channel, and make the overflow valve seat and the overflow valve body fit tightly with the overflow valve plate respectively. The flow resistance fluctuation when the fluid flows through the overflow channel is small, and the damping force of the shock absorber is more stable.

[0009] According to some embodiments of the present invention, a valve body abutment ring is provided on the side of the overflow valve body facing the overflow valve disc, and a valve seat abutment ring is provided on the side of the overflow valve seat facing the overflow valve disc, and the valve body abutment ring and the valve seat abutment ring are staggered in the radial direction of the flow regulating valve; wherein, along the radial direction of the overflow valve disc, at least a portion of the overflow channel is located between the valve body abutment ring and the valve seat abutment ring.

[0010] According to some embodiments of the present invention, the outer diameter of the valve body abutment ring is smaller than the inner diameter of the valve seat abutment ring, and at least part of the overflow channel is located between the outer circumferential surface of the valve body abutment ring and the inner circumferential surface of the valve seat abutment ring.

[0011] According to some embodiments of the present invention, a valve body abutment surface is constructed on one side surface of the overflow valve plate facing the overflow valve body, and the valve body abutment surface is suitable for abutting against the valve body abutment ring, and a valve body pressure-bearing surface is formed between the valve body abutment surface and the outer peripheral edge of the overflow valve plate.

[0012] According to some embodiments of the present invention, the overflow channel is constructed as an overflow hole, which penetrates the overflow valve plate along the thickness direction of the overflow valve plate, and the overflow hole is located between the outer peripheral surface of the valve body abutting the ring platform and the inner peripheral surface of the valve seat abutting the ring platform.

[0013] According to some embodiments of the present invention, the overflow channel is constructed as a first overflow notch, one end of which extends at least between the outer peripheral surface of the valve body abutting the ring platform and the inner peripheral surface of the valve seat abutting the ring platform, and the other end of the first overflow notch extends radially toward the outer peripheral edge of the overflow valve plate.

[0014] According to some embodiments of the present invention, the other end of the first overflow notch extends to the outer periphery of the overflow valve plate, so that the other end of the first overflow notch is open.

[0015] According to some embodiments of the present invention, the first overflow notch penetrates along the thickness direction of the overflow valve plate; or, the first overflow notch is provided on at least one side of the thickness direction of the overflow valve plate.

[0016] According to some embodiments of the present invention, a second overflow notch is provided on the side of the valve body abutting the ring platform facing the overflow valve plate, and the second overflow notch is connected to the first flow channel and the restoration chamber; and / or a third overflow notch is provided on the side of the valve seat abutting the ring platform facing the overflow valve plate, and the third overflow notch is connected to the first flow channel and the restoration chamber.

[0017] According to some embodiments of the present invention, the overflow channel is configured in multiple numbers, and the multiple overflow channels are arranged at intervals along the circumference of the overflow valve plate.

[0018] According to some embodiments of the present invention, 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 connected to the first flow channel and are both connected to the recovery chamber; wherein, the second flow channel and / or the third flow channel are opened and closed by the movement of the overflow valve body.

[0019] 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.

[0020] According to some embodiments of the present invention, one of the overflow valve body and the overflow valve seat is provided with a support column, the overflow valve plate is provided with a guide hole, and the support column is passed through the guide hole.

[0021] According to the second aspect of the present invention, a shock absorber is proposed, comprising: a cylinder; a piston, the piston being movably arranged in the cylinder, and the piston separating a compression chamber and a recovery chamber in the cylinder; a flow regulating valve according to the first aspect of the present invention, the flow regulating valve being arranged in the piston and communicating with the compression chamber and the recovery chamber respectively; a control valve, the control valve being arranged in the piston, and the control valve regulating the fluid flow between the compression chamber and the recovery chamber by controlling the flow regulating valve.

[0022] According to the shock absorber described in the second aspect embodiment of the present invention, by utilizing the flow regulating valve described in the first aspect embodiment of the present invention, the processing accuracy of the overflow channel can be improved, and the overflow valve seat and the overflow valve body can be tightly fitted with the overflow valve plate respectively. When the fluid flows through the overflow channel, the flow resistance fluctuation is small, and the damping force of the shock absorber is more stable.

[0023] According to a third aspect of the present invention, a vehicle is provided. The vehicle includes the shock absorber according to the second aspect of the present invention.

[0024] According to the vehicle described in the third aspect embodiment of the present invention, by utilizing the shock absorber described in the second aspect embodiment of the present invention, the processing accuracy of the overflow channel can be improved, and the overflow valve seat and the overflow valve body can be tightly fitted with the overflow valve plate respectively. The flow resistance fluctuation when the fluid flows through the overflow channel is small, and the damping force of the shock absorber is more stable.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0027] Figure 1 1 is a schematic structural diagram of a shock absorber according to an embodiment of the present utility model;

[0028] Figure 2 This is a structural schematic diagram of the flow control valve according to an embodiment of the present invention when it is in an open valve state at the initial position and restored to its working condition;

[0029] Figure 3 This is a structural schematic diagram of a flow control valve according to an embodiment of the present invention in a compression working condition when the flow control valve is in an open valve state at an initial position;

[0030] Figure 4 This is a structural schematic diagram of the flow control valve according to an embodiment of the present invention when the initial position is in the closed state and the working condition is restored;

[0031] Figure 5 This is a structural schematic diagram of a flow control valve according to an embodiment of the present invention in a compression working condition when the flow control valve is in a closed state at the initial position;

[0032] Figure 6 is a cross-sectional view of a flow control valve according to an embodiment of the present utility model;

[0033] Figure 7 yes Figure 6 Detailed view of point A;

[0034] Figure 8 is a cross-sectional view of a flow control valve according to an embodiment of the present utility model;

[0035] Figure 9 1 is a schematic structural diagram of a relief valve plate of a flow control valve according to an embodiment of the present utility model;

[0036] Figure 10 is a cross-sectional view of a relief valve plate according to an embodiment of the present utility model;

[0037] Figure 11 is a cross-sectional view of a flow control valve according to another embodiment of the present utility model;

[0038] Figure 12 1 is a schematic structural diagram of a relief valve plate of a flow control valve according to another embodiment of the present utility model;

[0039] Figure 13 is a cross-sectional view of a relief valve plate according to another embodiment of the present utility model;

[0040] Figure 14 is a cross-sectional view of a flow control valve according to another embodiment of the present utility model;

[0041] Figure 15 1 is a schematic structural diagram of a relief valve body of a flow control valve according to an embodiment of the present utility model;

[0042] Figure 16 It is a structural schematic diagram of the overflow valve seat of the flow control valve according to an embodiment of the utility model.

[0043] Reference numerals:

[0044] 1. Shock absorber;

[0045] 100, cylinder; 110, inner cylinder; 111, compression chamber; 112, recovery chamber; 120, outer cylinder; 121, liquid storage chamber; 130, bottom valve assembly;

[0046] 200, piston; 300, flow control valve;

[0047] 310, overflow valve body; 311, second flow channel; 312, valve body abutting ring platform; 313, third overflow notch;

[0048] 320, overflow valve seat; 321, first flow channel; 322, third flow channel; 325, valve seat abutting ring platform;

[0049] 330, overflow valve disc; 331, communicating hole; 334, guide hole; 335, valve body abutting surface; 336, valve body pressure-bearing surface; 337, valve seat abutting surface; 338, valve seat pressure-bearing surface; 339, overflow hole; 340, support column; 370, overflow channel; 371, first overflow notch;

[0050] 400. Control valve. DETAILED DESCRIPTION

[0051] The following describes embodiments of the present invention in detail. Examples of the embodiments 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 intended only to explain the present invention and are not to be construed as limiting the present invention.

[0052] 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 to 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, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0053] In the description of the present invention, "first feature" and "second feature" may include one or more such features.

[0054] In the description of the present invention, “multiple” means two or more, and “several” means one or more.

[0055] The shock absorber 1 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0056] 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 .

[0057] The piston 200 is movably disposed in 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 in 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.

[0058] The compression chamber 111 and the recovery chamber 112 may store fluid, such as fluid with a certain pressure and inert gas.

[0059] 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 the compression chamber 111 and the 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. 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.

[0060] In the present invention, the flow control valve 300 is in an open state at the initial position, which refers to the initial open state when the flow control valve 300 is not squeezed by external pressure and no fluid flows in the flow control valve 300. In addition, the flow control valve 300 is in a closed state at the initial position, which refers to the initial closed state when the flow control valve 300 is squeezed by external force and the relief valve seat 320 and the relief valve body 310 of the flow control valve 300 are in contact with each other.

[0061] For example, in some embodiments, the valve core assembly 500 squeezes the flow regulating valve 300 when it is 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 not energized and there is no fluid flowing in the flow regulating valve 300. 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.

[0062] Alternatively, in other embodiments, the valve core assembly 500 will squeeze the flow regulating valve 300 when it is not powered. 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 powered and there is no fluid flowing in the flow regulating valve 300. 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 powered 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.

[0063] 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.

[0064] 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.

[0065] 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 presence of the shock absorber 1 can reduce the vibration force transmitted to the other object, thereby achieving a vibration reduction effect.

[0066] In addition, the control valve 400 is provided on the piston 200 . The control valve 400 regulates the fluid flow between the compression chamber 111 and the recovery chamber 112 by controlling the flow regulating valve 300 .

[0067] 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 vehicle's ride comfort and handling stability.

[0068] 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.

[0069] 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 recovery chamber 112, which is beneficial to improving the ride comfort and vehicle handling performance. In addition, the shock absorber 1 has a simple structure and is easy to adjust.

[0070] The flow control valve 300 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0071] like Figures 1-16 As shown, the flow control valve 300 according to the embodiment of the present invention includes a relief valve seat 320 , a relief valve plate 330 and a relief valve body 310 .

[0072] 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. The overflow valve body 310 is movably arranged on the side of the overflow valve seat 320 facing away from the compression chamber 111. The overflow valve plate 330 is movably arranged between the overflow valve body 310 and the overflow valve seat 320. The overflow valve plate 330 is constructed with an overflow channel 370, and when the overflow valve seat 320 and the overflow valve body 310 are respectively in contact with the overflow valve plate 330, the overflow channel 370 is respectively communicated with the first flow channel 321 and the recovery chamber 112 of the shock absorber 1.

[0073] 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.

[0074] Specifically, the relief valve body 310 is movably mounted within the piston 200. The relief valve seat 320 is mounted within the piston 200 and is located on the side of the relief valve body 310 facing away from the control valve 400. The relief valve seat 320 is provided with a first flow channel 321, which is in communication with the compression chamber 111. The relief valve disc 330 is movably mounted between the relief valve body 310 and the relief valve seat 320. A second flow channel 311 is formed between the relief valve disc 330 and the relief valve body 310, and a third flow channel 322 is formed between the relief valve disc 330 and the relief valve seat 320. The second flow channel 311 and the third flow channel 322 are respectively in communication with the first flow channel 321 and are both in communication with the recovery chamber 112. The second flow channel 311 and / or the third flow channel 322 can be opened and closed by the movement of the relief valve body 310.

[0075] 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, as well as through the first flow channel 321 and the third flow channel 322.

[0076] 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.

[0077] Furthermore, by adding a movable overflow valve disc 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 opposite sides of the overflow valve disc 330, and the fluid can push open the overflow valve body 310, and the overflow valve body 310 and the overflow valve disc 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 flow 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 the closed state at the initial position and the shock absorber 1 is in the compression working 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 is opened. 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.

[0078] With this 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.

[0079] In addition, the overflow valve disc 330 is configured with an overflow channel 370 , and when the overflow valve seat 320 and the overflow valve body 310 respectively abut against the overflow valve disc 330 , the overflow channel 370 is communicated with the first flow channel 321 and the recovery chamber 112 of the shock absorber 1 respectively.

[0080] In this way, when the flow regulating valve 300 is in the closed state at the initial position and the shock absorber 1 is in the compression working condition, the fluid in the compression chamber 111 can first flow to the recovery chamber 112 through the overflow channel 370 in a first stage. At this time, the flow rate of the fluid flowing from the compression chamber 111 to the recovery chamber 112 is small, the damping of the shock absorber 1 is large, and the shock absorber 1 appears to be "hard"; or, when the flow regulating valve 300 is in the closed state at the initial position and the shock absorber 1 is in the recovery working condition, the fluid in the compression chamber 111 can first flow to the compression chamber 111 through the overflow channel 370 in a first stage. At this time, the flow rate of the fluid flowing from the recovery chamber 112 to the compression chamber 111 is small, the damping of the shock absorber 1 is large, and the shock absorber 1 appears to be "hard".

[0081] Moreover, by providing an overflow channel 370 on the overflow valve plate 330, for example, the overflow channel 370 can be constructed by laser drilling and grooving on the overflow valve plate 330, the processing accuracy of the overflow channel 370 can be higher, the consistency of batch production of the overflow valve plate 330 can be better, and the requirements of the shock absorber 1 can be better met. Moreover, this will not damage the flatness of the overflow valve seat 320 and the overflow valve body 310. The overflow valve seat 320 and the overflow valve body 310 can be more tightly fitted and sealed with the overflow valve plate 330. When the shock absorber 1 is in the first stage of the compression working condition or the first stage of the recovery working condition, the flow resistance fluctuation of the fluid in the overflow channel 370 is smaller, and the fluid flow is smoother, thereby ensuring that the damping force of the shock absorber 1 is stable and the vibration reduction effect is better.

[0082] In this way, the flow regulating valve 300 according to the embodiment of the utility model can improve the processing accuracy of the overflow channel 370, and make the overflow valve seat 320 and the overflow valve body 310 fit tightly with the overflow valve plate 330 respectively. The flow resistance fluctuation when the fluid flows through the overflow channel 370 is small, and the damping force of the shock absorber 1 is more stable.

[0083] 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 processing accuracy of the overflow channel 370 can be improved, and the overflow valve seat 320 and the overflow valve body 310 are respectively tightly fitted with the overflow valve plate 330. When the fluid flows through the overflow channel 370, the flow resistance fluctuation is small, and the damping force of the shock absorber 1 is more stable.

[0084] In some specific embodiments of the present invention, Figure 6 、 Figure 7 、 Figure 15 and Figure 16 As shown, a valve body abutting ring 312 is provided on the side of the relief valve body 310 facing the relief valve disc 330 , and a valve seat abutting ring 325 is provided on the side of the relief valve seat 320 facing the relief valve disc 330 .

[0085] The valve body abutting ring 312 in the present invention is the first abutting ring in the priority application, and the valve seat abutting ring 325 is the second abutting ring in the priority application.

[0086] Specifically, the valve body abutting ring platform 312 and the valve seat abutting ring platform 325 are staggered in the radial direction of the flow control valve 300, and along the radial direction of the overflow valve plate 330, at least part of the overflow channel 370 is located between the valve body abutting ring platform 312 and the valve seat abutting ring platform 325.

[0087] Among them, the valve body abutment ring 312 and the valve seat abutment ring 325 are staggered in the radial direction of the flow control valve 300, which means that along the radial direction of the cylinder 100, the outer diameter of the valve body abutment ring 312 can be smaller than the inner diameter of the valve seat abutment ring 325, or the inner diameter of the valve body abutment ring 312 can be larger than the outer diameter of the valve seat abutment ring 325.

[0088] With this arrangement, the overflow channel 370 can extend in the radial direction of the cylinder 100 to between the valve body abutting ring platform 312 and the valve seat abutting ring platform 325. The valve body abutting ring platform 312 and the valve seat abutting ring platform 325 will not completely block the overflow channel 370, so that the overflow channel 370 can be connected to the compression chamber 111 and the recovery chamber 112 respectively, so that the fluid in the compression chamber 111 and the fluid in the recovery chamber 112 can flow through the overflow channel 370, and the structural arrangement is more reasonable.

[0089] In some specific embodiments of the present invention, Figure 6 As shown, the outer diameter of the valve body abutting ring 312 is smaller than the inner diameter of the valve seat abutting ring 325 .

[0090] In this way, the contact area between the fluid in the overflow valve body 310 and the overflow valve disc 330 can be smaller than the contact area between the fluid in the overflow valve seat 320 and the overflow valve disc 330. When the flow regulating valve 300 is in the closed state at the initial position and the shock absorber 1 is in the compression working condition, the fluid flows from the compression chamber 111 to the recovery chamber 112. The fluid in the first flow channel 321 can more easily push the overflow valve disc 330 and the overflow valve body 310, so that the third flow channel 322 formed between the overflow valve disc 330 and the overflow valve seat 320 can be opened, thereby allowing the fluid in the compression chamber 111 to flow from the first flow channel 321 and the third flow channel 322 into the recovery chamber 112.

[0091] Furthermore, at least a portion of the overflow channel 370 is located between the outer circumferential surface of the valve body abutment land 312 and the inner circumferential surface of the valve seat abutment land 325. Thus, the valve body abutment land 312 and the valve seat abutment land 325 do not completely block the overflow channel 370, thereby allowing the overflow channel 370 to communicate with the compression chamber 111 and the recovery chamber 112, respectively, facilitating the flow of fluid in the compression chamber 111 and the recovery chamber 112 through the overflow channel 370.

[0092] In some specific embodiments of the present invention, Figure 7 As shown, the side surface of the overflow valve disc 330 facing the overflow valve body 310 is constructed with a valve body abutment surface 335, and the valve body abutment surface 335 is arranged adjacent to the inner periphery of the overflow valve disc 330. The valve body abutment surface 335 is suitable for abutting with the valve body abutment ring platform 312, and a valve body pressure-bearing surface 336 is formed between the valve body abutment surface 335 and the outer periphery of the overflow valve disc 330.

[0093] In the orthographic projection along the axial direction of the cylinder 100 , the inner peripheral edge of the valve body abutting surface 335 is located inside the second abutting ring platform 325 .

[0094] Therefore, when the flow regulating valve 300 is in the closed state at the initial position and the shock absorber 1 is in the recovery condition, the fluid can flow between the valve body pressure-bearing surface 336 and the part outside the first abutment ring platform 312 of the relief valve body 310, so as to push the relief valve plate 330 and the relief valve body 310 apart to open the second flow channel 311.

[0095] In addition, if Figure 7 As shown, the relief valve disc 330 has a valve seat abutment surface 337 and a valve seat pressure-bearing surface 338 on the side facing the relief valve seat 320. The valve seat abutment surface 337 is disposed adjacent to the outer periphery of the relief valve disc 330, while the valve seat pressure-bearing surface 338 is disposed adjacent to the inner periphery of the relief valve disc 330. The valve seat abutment surface 337 is adapted to abut against the second abutment ring 325. Thus, when the flow control valve 300 is in the closed state at the initial position and the shock absorber 1 is in a compression state, the fluid can push the relief valve disc 330 via the valve seat pressure-bearing surface 338, thereby pushing the relief valve disc 330 and the relief valve body 310 relative to the relief valve seat 320 to open the third flow channel 322.

[0096] In some specific embodiments of the present invention, Figures 8-10 As shown, the overflow channel 370 is constructed as an overflow hole 339, which penetrates the overflow valve plate 330 along the thickness direction of the overflow valve plate 330, and the overflow hole 339 is located between the outer peripheral surface of the valve body abutting ring platform 312 and the inner peripheral surface of the valve seat abutting ring platform 325.

[0097] For example, the overflow hole 339 can be formed on the overflow valve plate 330 by laser drilling, which can ensure that the flatness of the overflow valve plate 330 is good, and the processing accuracy of the overflow hole 339 can be high, and the consistency in mass production is better.

[0098] There may be multiple overflow holes 339, and the overflow holes 339 may be spaced apart along the circumference of the overflow valve plate 330. The axial direction of the overflow hole 339 may be parallel to the thickness direction of the overflow valve plate 330, or the axial direction of the overflow hole 339 may be inclined relative to the thickness direction of the overflow valve plate 330.

[0099] With this arrangement, the overflow valve body 310 and the overflow valve seat 320 will not interfere with the overflow hole 339 , and the overflow hole 339 can always remain in communication with the compression chamber 111 and the recovery chamber 112 .

[0100] In addition, by constructing the overflow channel 370 as an overflow hole 339, the size of the overflow hole 339 can be set to be smaller, so that the flow rate of the overflow hole 339 can be smaller. When the flow regulating valve 300 is in the closed state at the initial position and the shock absorber 1 is in the compression working condition, the fluid in the compression chamber 111 can first flow to the recovery chamber 112 through the overflow hole 339 in a stage. At this time, the flow rate of the fluid flowing from the compression chamber 111 to the recovery chamber 112 is small, the damping of the shock absorber 1 is large, and the shock absorber 1 appears to be "hard"; or, when the flow regulating valve 300 is in the closed state at the initial position and the shock absorber 1 is in the recovery working condition, the fluid in the compression chamber 111 can first flow to the compression chamber 111 through the overflow hole 339 in a stage. At this time, the flow rate of the fluid flowing from the recovery chamber 112 to the compression chamber 111 is small, the damping of the shock absorber 1 is large, and the shock absorber 1 appears to be "hard".

[0101] In some specific embodiments of the present invention, Figure 11-13 As shown, the overflow channel 370 is constructed as a first overflow notch 371, one end of the first overflow notch 371 extends at least to between the outer peripheral surface of the valve body abutting ring platform 312 and the inner peripheral surface of the valve seat abutting ring platform 325, and the other end of the first overflow notch 371 extends along the radial direction of the overflow valve plate 330 toward the outer peripheral edge of the overflow valve plate 330.

[0102] The first overflow notch 371 in the present invention is the overflow notch in the priority application.

[0103] In this way, the radial extension size of the first overflow gap 371 along the overflow valve plate 330 can be larger, and the first overflow gap 371 is less likely to be blocked by the overflow valve seat 320 and the overflow valve body 310, so that the fluid can flow between the compression chamber 111 and the recovery chamber 112 through the first overflow gap 371.

[0104] Furthermore, if Figure 12 As shown, the other end of the first overflow notch 371 extends to the outer periphery of the overflow valve disc 330, so that the other end of the first overflow notch 371 is open. This configuration not only simplifies the structure of the first overflow notch 371 and facilitates simplifying the processing steps of the overflow valve disc 330, but also allows fluid to enter the first overflow notch 371 directly from the outer periphery of the overflow valve disc 330, or fluid can enter the first overflow notch 371 from the outer periphery of the overflow valve disc 330 along the first overflow notch 371, resulting in smoother fluid flow. The first overflow notch 371 is less likely to be blocked by the overflow valve seat 320 and the overflow valve body 310, thereby more effectively ensuring that the fluid can flow between the compression chamber 111 and the recovery chamber 112 through the first overflow notch 371.

[0105] In some specific embodiments of the present invention, Figure 12 and Figure 13 As shown, the first overflow notch 371 penetrates along the thickness direction of the overflow valve plate 330, which can simplify the structure of the first overflow notch 371 and facilitate processing. The channel flow area of ​​the first overflow notch 371 can be larger, and the flow of fluid at the first overflow notch 371 is smoother.

[0106] Alternatively, the first overflow notch 371 is provided on at least one side in the thickness direction of the overflow valve disc 330. For example, the first overflow notch 371 can be provided on the side of the overflow valve disc 330 in the thickness direction facing the overflow valve body 310, or the first overflow notch 371 can be provided on the side of the overflow valve disc 330 in the thickness direction facing the overflow valve seat 320, or the first overflow notch 371 can be provided on both opposite sides of the overflow valve disc 330 in the thickness direction.

[0107] In some specific embodiments of the present invention, a second overflow notch is provided on the side of the valve body abutting against the ring platform 312 facing the overflow valve plate 330, and the second overflow notch is connected to the first flow channel 321 and the recovery chamber 112; and / or Figure 16 As shown, a third overflow notch 313 is provided on the side of the valve seat abutting the ring platform 325 facing the overflow valve plate 330 . The third overflow notch 313 is communicated with the first flow channel 321 and the recovery chamber 112 .

[0108] The second overflow notch and the third overflow notch 313 in the present invention are the overflow notches in the priority application.

[0109] For example, the second overflow notch can be constructed only on the side of the overflow valve body 310 facing the overflow valve disc 330; or, the third overflow notch 313 can be constructed only on the side of the overflow valve seat 320 facing the overflow valve disc 330; or, the second overflow notch can be constructed on the side of the overflow valve body 310 facing the overflow valve disc 330, and the third overflow notch 313 can be constructed on the side of the overflow valve seat 320 facing the overflow valve disc 330.

[0110] In this way, 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 fluid in the compression chamber 111 can first flow to the recovery chamber 112 through the second overflow gap and / or the third overflow gap 313 in a first stage. At this time, the flow rate of the fluid flowing from the compression chamber 111 to the recovery chamber 112 is small, the damping of the shock absorber 1 is large, and the shock absorber 1 appears to be "hard"; or, when the flow regulating valve 300 is in a closed state at the initial position and the shock absorber 1 is in a recovery condition, the fluid in the compression chamber 111 can first flow to the compression chamber 111 through the second overflow gap and / or the third overflow gap 313 in a first stage. At this time, the flow rate of the fluid flowing from the recovery chamber 112 to the compression chamber 111 is small, the damping of the shock absorber 1 is large, and the shock absorber 1 appears to be "hard".

[0111] In some specific embodiments of the present invention, Figure 9 and Figure 12 As shown, the overflow channels 370 are constructed in plurality, and the plurality of overflow channels 370 are arranged at intervals along the circumference of the overflow valve plate 330. In this way, the plurality of overflow channels 370 can simultaneously supply fluid flow, further improving the fluid flow smoothness between the compression chamber 111 and the recovery chamber 112. Moreover, the fluid can flow along multiple circumferential positions of the overflow valve plate 330, and the fluid flow is more uniform, so that the damping force of the shock absorber 1 is more stable.

[0112] In some specific embodiments of the present invention, Figure 6 、 Figures 8-14 As shown, the overflow valve plate 330 is configured with at least one communication hole 331 , and the second flow channel 311 is connected to the first flow channel 321 through the communication hole 331 .

[0113] 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.

[0114] 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 .

[0115] In some specific embodiments of the present invention, Figure 6 and Figure 8 As shown, one of the relief valve body 310 and the relief valve seat 320 is provided with a support column 340 , the relief valve plate 330 is provided with a guide hole 334 , and the support column 340 is passed through the guide hole 334 .

[0116] The support column 340 may extend along the axial direction of the cylinder 100 .

[0117] For example, the relief valve body 310 may be provided with a support column 340, and the relief valve disc 330 may be sleeved on the support column 340 through a guide hole 334; or the relief valve seat 320 may be provided with a support column 340, and the relief valve disc 330 may be sleeved on the support column 340 through the guide hole 334. In this way, the support column 340 can guide the movement of the relief valve disc 330, so that the relief valve disc 330 can move axially along the cylinder 100 under the guidance of the support column 340, preventing the relief valve disc 330 from radially shaking, and making the movement of the relief valve disc 330 more stable and reliable.

[0118] A vehicle according to an embodiment of the present invention will be described below with reference to the accompanying drawings. The vehicle includes the shock absorber according to the above embodiment of the present invention.

[0119] According to the vehicle of the embodiment of the present invention, by utilizing the shock absorber according to the above-mentioned embodiment of the present invention, the processing accuracy of the overflow channel can be improved, and the overflow valve seat and the overflow valve body can be tightly fitted with the overflow valve plate respectively. The flow resistance fluctuation when the fluid flows through the overflow channel is small, and the damping force of the shock absorber is more stable.

[0120] The flow regulating valve for the shock absorber, the shock absorber 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.

[0121] In this specification, reference to terms such as "specific embodiment" and "specific example" 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 representations of the above terms do not necessarily refer to the same embodiment or example.

[0122] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A flow regulating valve (300) for a shock absorber, characterized in that: include: An overflow valve seat (320), the overflow valve seat (320) being configured with a first flow channel (321), the first flow channel (321) being adapted to communicate with the compression chamber (111) of the shock absorber (1); a relief valve body (310), the relief valve body (310) being movably disposed on a side of the relief valve seat (320) facing away from the compression chamber (111); The overflow valve disc (330) is movably arranged between the overflow valve body (310) and the overflow valve seat (320). The overflow valve disc (330) is configured with an overflow channel (370). When the overflow valve seat (320) and the overflow valve body (310) respectively abut against the overflow valve disc (330), the overflow channel (370) is communicated with the first flow channel (321) and the recovery chamber (112) of the shock absorber (1).

2. The flow regulating valve (300) for a shock absorber according to claim 1, characterized in that: A valve body abutting ring platform (312) is provided on the side of the overflow valve body (310) facing the overflow valve disc (330), and a valve seat abutting ring platform (325) is provided on the side of the overflow valve seat (320) facing the overflow valve disc (330). The valve body abutting ring platform (312) and the valve seat abutting ring platform (325) are staggered in the radial direction of the flow control valve (300); Wherein, along the radial direction of the overflow valve plate (330), at least a portion of the overflow channel (370) is located between the valve body abutting ring platform (312) and the valve seat abutting ring platform (325).

3. The flow regulating valve (300) for a shock absorber according to claim 2, characterized in that: The outer diameter of the valve body abutting ring platform (312) is smaller than the inner diameter of the valve seat abutting ring platform (325), and at least a portion of the overflow channel (370) is located between the outer peripheral surface of the valve body abutting ring platform (312) and the inner peripheral surface of the valve seat abutting ring platform (325).

4. The flow regulating valve (300) for a shock absorber according to claim 3, characterized in that: A valve body abutting surface (335) is formed on a surface of the overflow valve disc (330) facing the overflow valve body (310). The valve body abutting surface (335) is suitable for abutting against the valve body abutting ring (312), and a valve body pressure-bearing surface (336) is formed between the valve body abutting surface (335) and the outer peripheral edge of the overflow valve disc (330).

5. The flow regulating valve (300) for a shock absorber according to claim 3, characterized in that: The overflow channel (370) is constructed as an overflow hole (339), the overflow hole (339) penetrates the overflow valve plate (330) along the thickness direction of the overflow valve plate (330), and the overflow hole (339) is located between the outer peripheral surface of the valve body abutting ring platform (312) and the inner peripheral surface of the valve seat abutting ring platform (325).

6. The flow regulating valve (300) for a shock absorber according to claim 3, characterized in that: The overflow channel (370) is constructed as a first overflow notch (371), one end of the first overflow notch (371) extends at least between the outer peripheral surface of the valve body abutting ring platform (312) and the inner peripheral surface of the valve seat abutting ring platform (325), and the other end of the first overflow notch (371) extends along the radial direction of the overflow valve plate (330) toward the outer peripheral edge of the overflow valve plate (330).

7. The flow regulating valve (300) for a shock absorber according to claim 6, characterized in that: The other end of the first overflow notch (371) extends to the outer periphery of the overflow valve plate (330), so that the other end of the first overflow notch (371) is open.

8. The flow regulating valve (300) for a shock absorber according to claim 6, characterized in that: The first overflow notch (371) penetrates along the thickness direction of the overflow valve plate (330); or, The first overflow notch (371) is provided on at least one side of the overflow valve plate (330) in the thickness direction.

9. The flow regulating valve (300) for a shock absorber according to claim 2, characterized in that: A second overflow notch is provided on the side of the valve body abutting the ring platform (312) facing the overflow valve plate (330), and the second overflow notch is communicated with the first flow channel (321) and the recovery chamber (112); and / or, A third overflow notch (313) is provided on the side of the valve seat abutting ring platform (325) facing the overflow valve plate (330), and the third overflow notch (313) is communicated with the first flow channel (321) and the recovery chamber (112).

10. The flow regulating valve (300) for a shock absorber according to claim 1, characterized in that: The overflow channels (370) are constructed in a plurality, and the plurality of overflow channels (370) are arranged at intervals along the circumference of the overflow valve plate (330).

11. The flow regulating valve (300) for a shock absorber according to claim 1, characterized in that: 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), wherein the second flow channel (311) and the third flow channel (322) are respectively in communication with the first flow channel (321) and are both in communication with the recovery chamber (112); 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).

12. The flow regulating valve (300) for a shock absorber according to claim 11, 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).

13. The flow regulating valve (300) for a shock absorber according to claim 1, characterized in that: One of the overflow valve body (310) and the overflow valve seat (320) is provided with a support column (340), the overflow valve plate (330) is provided with a guide hole (334), and the support column (340) is passed through the guide hole (334).

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) within the cylinder (100); The flow regulating valve (300) according to any one of claims 1 to 13, wherein the flow regulating valve (300) is provided in the piston (200) and is communicated with the compression chamber (111) and the recovery chamber (112) respectively; A control valve (400) is provided on the piston (200), and the control valve (400) regulates 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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