Flow adjusting device, shock absorber and vehicle

Abstract

The invention relates to a flow adjusting device, a shock absorber and a vehicle, the flow adjusting device is arranged in a shell so as to at least divide the inner space of the shell into a first cavity and a second cavity, the flow adjusting device is provided with a first channel communicating with the first cavity and the second cavity, and the flow adjusting device comprises a valve seat, a valve rod and a valve rod, the valve element can move between a first position and a second position relative to the valve seat so as to adjust communication damping of the first channel; the valve plate is movably arranged between the valve seat and the valve core; the second elastic piece is used for applying elastic force to the valve plate, so that the valve plate has the tendency of abutting against the valve seat; the conduction piece is combined with the second elastic piece; the conduction piece is fixed relative to the valve seat. The flow adjusting device, the shock absorber and the vehicle have the beneficial effect that the flow adjusting flexibility is improved by arranging the valve plate capable of being independently adjusted between the valve seat and the valve element.

Description

Technical Field

[0001] The present application relates to the technical field of shock absorbers, and in particular to a flow regulating device, a shock absorber and a vehicle. Background Art

[0002] In the related art, the flow control valve generally includes a valve seat and a valve core, and the flow through the flow control valve is adjusted by controlling the position of the valve core relative to the valve seat. A channel for the fluid to pass through is formed between the valve core and the valve seat, but this structural solution has poor flexibility in regulating the flow of fluids in different flow states. Summary of the invention

[0003] The embodiment of the present application provides a flow regulating device to improve the flexibility of flow regulation so as to at least partially solve the above-mentioned technical problems.

[0004] In order to achieve the above-mentioned object, according to a first aspect of the present application, a flow regulating device is provided, wherein the flow regulating device is arranged in a housing to at least separate the internal space of the housing into a first chamber and a second chamber, wherein the flow regulating device is formed with a first channel connecting the first chamber and the second chamber, and the flow regulating device comprises:

[0005] Valve seat;

[0006] a valve core, movable between a first position and a second position relative to the valve seat to adjust the communication damping of the first channel;

[0007] A valve plate, movably arranged between the valve seat and the valve core;

[0008] a second elastic member, used for applying elastic force to the valve plate so that the valve plate tends to abut against the valve seat;

[0009] a conductive member, combined with the second elastic member;

[0010] Wherein, the conductive component is fixed relative to the valve seat.

[0011] Optionally, the flow regulating device comprises:

[0012] A first elastic member, used for applying elastic force to the valve core, so that the valve core has a tendency to move away from the valve seat;

[0013] Wherein, the first elastic member is combined with the conductive member.

[0014] Optionally, the conductive member is at least partially located between the valve seat and the valve core.

[0015] Optionally, the conductive member includes:

[0016] A locking rod, formed with a first contact surface for contacting the first elastic member;

[0017] A limiting pin, formed with a second contact surface for contacting the second elastic member;

[0018] Wherein, the limiting pin and the locking rod are respectively fixed relative to the valve seat.

[0019] Optionally, the first contact surface is located between the second contact surface and the valve core.

[0020] Optionally, the valve plate is slidably connected to the valve seat via the locking member and / or limiting pins.

[0021] Optionally, the valve sheet has:

[0022] A guide hole, wherein at least part of the limiting pins are passed through the guide hole so that the valve plate and the valve seat form a sliding connection;

[0023] Wherein, the guide hole penetrates the valve plate along the axial direction.

[0024] Optionally, the valve plate further comprises: a plurality of avoidance holes arranged at different circumferential positions;

[0025] Wherein, the avoidance hole penetrates the valve plate along the axial direction;

[0026] The locking rod has:

[0027] A plurality of guide plates are arranged at different circumferential positions;

[0028] Wherein, the guide piece extends axially and at least a portion of the guide piece is penetrated through the avoidance hole.

[0029] Optionally, a plurality of the guide plates form a receiving space, and at least some of the limiting pins are located in the receiving space.

[0030] Optionally, the valve core is further formed with a positioning column extending in the axial direction, and at least a portion of the first elastic member is sleeved on the positioning column.

[0031] Optionally, the valve seat has:

[0032] a seat cavity, communicating with the second cavity;

[0033] wherein the housing cavity constitutes at least a portion of the first passage;

[0034] When the valve core is in the first position, the valve sheet is clamped between the valve core and the valve seat;

[0035] When the valve core is at the second position, the valve sheet is separated from the valve core or the valve seat, and a second overflow channel communicating with the seat cavity and the first cavity is formed between the valve core and the valve seat.

[0036] Optionally, the second overflow channel is formed between the valve core and the valve plate or between the valve seat and the valve plate;

[0037] When the valve plate is separated from the valve core, the second overflow channel is at least formed by the distance between the valve core and the valve plate;

[0038] When the valve plate is separated from the valve seat, the second overflow channel is at least formed by the distance between the valve core and the valve seat.

[0039] Optionally, the valve sheet has:

[0040] A flow hole, axially penetrating the valve plate;

[0041] When the valve core is separated from the valve plate, the flow hole constitutes a part of the first channel, and the flow hole is communicated between the first chamber and the seat chamber.

[0042] Optionally, when the valve core is in the first position, a first overflow channel connecting the seat cavity and the first cavity is formed by at least the valve seat.

[0043] Optionally, the valve seat has:

[0044] A flow opening communicating between the seat cavity and the first cavity;

[0045] Wherein, the first overflow channel is at least constituted by the overflow opening.

[0046] Optionally, the flow opening is formed at one end of the valve seat close to the valve plate.

[0047] Optionally, the valve core is constructed to have a stop wall that can contact the end surface of the valve plate; the valve core is formed with a core cavity surrounded by the stop wall, and the flow hole is connected between the core cavity and the seat cavity.

[0048] Optionally, a force-bearing area of ​​the valve plate in the core cavity is smaller than a force-bearing area of ​​the valve plate in the seat cavity.

[0049] Optionally, at least a portion of the flow-stop wall protrudes axially to form a tip portion.

[0050] Optionally, the valve seat further comprises:

[0051] A flow groove is formed at one end of the valve seat close to the valve core;

[0052] The flow groove constitutes at least a part of the seat cavity; the axial projection contour of one end of the tip portion close to the valve plate is inside the axial projection contour of the side wall of the flow groove.

[0053] Optionally, the second elastic members are respectively located in the core cavities.

[0054] Optionally, the valve core has:

[0055] A first communication channel, used for communicating with the first cavity;

[0056] A second communication channel, used for communicating with the core cavity;

[0057] A first transition chamber, disposed between the first communicating flow channel and the second communicating flow channel;

[0058] Wherein, the first transition chamber cooperates with a pilot valve plug to control the communication or blocking of the first connecting flow channel and the first transition chamber.

[0059] Optionally, the first communicating flow channel comprises:

[0060] A first overflow hole extending along the axial direction of the valve core and communicating with the first chamber;

[0061] a second overflow hole extending in a radial direction of the valve core and communicating with the first overflow hole;

[0062] An overflow socket extending along the axial direction of the valve core and communicating between the second overflow hole and the first transition chamber;

[0063] Wherein, the overflow socket cooperates with the pilot valve plug to control the communication or blockage between the overflow socket and the first transition chamber.

[0064] Optionally, the flow regulating device further comprises:

[0065] A first valve body having a third communication flow channel for communicating with the first chamber;

[0066] A second valve body having a fourth communication flow channel for connecting the first cavity with the seat cavity and / or the core cavity;

[0067] Wherein, at least a part of the valve core is slidably disposed in the first valve body, a second transition cavity is formed between the valve core and the first valve body, and the second transition cavity is respectively communicated with the first communication flow channel and the third communication flow channel;

[0068] The first valve body and the second valve body are fixedly connected, and the valve seat is fixedly connected to the second valve body. According to a second aspect of the present application, a shock absorber is provided, comprising:

[0069] case;

[0070] The flow regulating device as described above is at least used to separate the internal space of the housing into a first chamber and a second chamber;

[0071] a piston valve movably disposed in the housing to change the states of the first chamber and the second chamber when the piston valve moves;

[0072] Wherein, the flow regulating device is connected to the piston valve to move synchronously with the piston valve.

[0073] Optionally, the shock absorber further comprises:

[0074] a piston rod, at least partly movably disposed in the housing;

[0075] Wherein, the flow regulating device is connected between the piston rod and the piston valve.

[0076] According to a third aspect of the present application, a vehicle is also provided, comprising the shock absorber as described above.

[0077] The beneficial effects of the present application are: providing a flow regulating device, a shock absorber and a vehicle which improve the flexibility of flow regulation by arranging an independently adjustable valve plate between a valve seat and a valve core.

[0078] More specifically, some embodiments of the present application may produce the following specific beneficial effects:

[0079] On the basis that the valve core can move relative to the valve seat to adjust the communication damping of the first channel, a movable valve plate is arranged between the valve seat and the valve core, and a second elastic member combined with the conductive member is arranged to independently apply elastic force to the valve plate, so that the valve core and the valve plate can adjust their respective positions respectively. Under the action of the fluid, the valve plate has different positions relative to the valve seat, so that the first channel has different structural forms to adapt to different fluid flow states, thereby improving the flexibility of flow regulation.

[0080] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0081] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0082] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0083] Figure 1 is a schematic diagram of the overall structure of a shock absorber provided in an exemplary embodiment of the present application;

[0084] Figure 2 yes Figure 1 A magnified schematic diagram of part A;

[0085] Figure 3 is a structural schematic diagram of a first flow regulating device provided in an exemplary embodiment of the present application in a first state;

[0086] Figure 4 is a structural schematic diagram of a first flow regulating device provided in an exemplary embodiment of the present application in a second state;

[0087] Figure 5 is a schematic structural diagram of a first flow regulating device provided in an exemplary embodiment of the present application in a third state;

[0088] Figure 6 is a three-dimensional diagram of a valve sheet in a first flow regulating device provided in an exemplary embodiment of the present application;

[0089] Figure 7 It is a structural schematic diagram showing the connection relationship between the limit pin, the elastic member and the valve plate in the first flow regulating device provided in the exemplary embodiment of the present application;

[0090] Figure 8 is a three-dimensional diagram of a valve seat in a first flow regulating device provided in an exemplary embodiment of the present application;

[0091] Fig. 9 is a three-dimensional diagram of a valve core in a first flow regulating device provided in an exemplary embodiment of the present application;

[0092] Fig.10 is a cross-sectional view of a valve core in a first flow regulating device provided in an exemplary embodiment of the present application;

[0093] Fig.11 is another cross-sectional view of a valve core in the first flow regulating device provided in an exemplary embodiment of the present application;

[0094] Fig.12 is a three-dimensional diagram showing the connection relationship between the first valve body and the second valve body in the first flow regulating device provided in an exemplary embodiment of the present application;

[0095] Fig.13 is a cross-sectional view showing the connection relationship between the first valve body and the second valve body in the first flow regulating device provided in an exemplary embodiment of the present application;

[0096] Fig.14 is a perspective view of a second valve body in a first flow regulating device provided in an exemplary embodiment of the present application;

[0097] Fig.15 is a perspective view of a first valve body in a first flow regulating device provided in an exemplary embodiment of the present application;

[0098] Fig.16 is a cross-sectional view of a first valve body in a first flow regulating device provided in an exemplary embodiment of the present application;

[0099] Fig.17 is a schematic diagram of the overall structure of a shock absorber including a second flow regulating device provided in an exemplary embodiment of the present application;

[0100] Fig.18 yes Fig.17 A magnified schematic diagram of part B;

[0101] Fig.19 is a schematic diagram of the overall structure of a second flow regulating device provided in an exemplary embodiment of the present application;

[0102] Fig. 20 It is a structural schematic diagram showing the connection relationship between the valve plate, the limiting pin and the locking rod in the second flow regulating device provided in the exemplary embodiment of the present application;

[0103] Fig.21 is a perspective view of a locking rod in a second flow regulating device provided in an exemplary embodiment of the present application;

[0104] Fig. 22 is a three-dimensional diagram of a valve sheet in a second flow regulating device provided in an exemplary embodiment of the present application;

[0105] Fig.23 is a cross-sectional view of a portion of a vibration absorber provided in an exemplary embodiment of the present application;

[0106] Fig.24 is another cross-sectional view of a portion of a vibration absorber provided in an exemplary embodiment of the present application;

[0107] Fig.25 is a perspective view of a magnetic core and a pilot valve plug in a shock absorber provided in an exemplary embodiment of the present application;

[0108] Fig.26 is a cross-sectional view of a magnetic core and a pilot valve plug in a shock absorber provided in an exemplary embodiment of the present application;

[0109] Fig. 27 is a schematic structural diagram of an iron core cover and a first guide sleeve in a vibration absorber provided in an exemplary embodiment of the present application;

[0110] Fig.28 is a schematic structural diagram of a piston rod in a shock absorber provided in an exemplary embodiment of the present application;

[0111] Fig.29 is a schematic diagram of the fluid flow direction when the shock absorber provided in the exemplary embodiment of the present application is in a non-powered state and the piston rod moves upward to restore;

[0112] Fig.30 is a schematic diagram of the fluid flow direction when the shock absorber provided in an exemplary embodiment of the present application is in an unpowered state and the piston rod moves downward for compression;

[0113] Fig.31 It is a schematic diagram of the fluid flow from the first stage to the second stage when the shock absorber provided in the exemplary embodiment of the present application is in the energized state and the piston rod moves upward to restore;

[0114] Fig.32 is a schematic diagram of the fluid flow direction in the third stage when the shock absorber provided in the exemplary embodiment of the present application is in an energized state and the piston rod moves upward to restore;

[0115] Fig.33 It is a schematic diagram of the fluid flow direction in the first stage when the shock absorber provided in the exemplary embodiment of the present application is in an energized state and the piston rod moves downward for compression;

[0116] Fig.34 is a schematic diagram of the fluid flow direction in the second stage when the shock absorber provided in an exemplary embodiment of the present application is in an energized state and the piston rod moves downward for compression;

[0117] Fig.35 It is a schematic diagram of the overall structure of a vehicle provided in an exemplary embodiment of the present application.

[0118] Description of reference numerals:

[0119] 100. Flow regulating device;

[0120] 100a, first overflow channel; 100b, second overflow channel; 100d, overflow space;

[0121] 110, valve seat; 111, seat cavity; 112, flow opening; 113, flow groove; 114, third external threaded portion;

[0122] 120, valve core; 121, flow-stopping wall; 121a, core cavity; 122, tip portion; 123, outer edge portion; 123a, first transition cavity;

[0123] 124, first communication channel; 124a, first overflow hole; 124b, second overflow hole; 124c, overflow plug hole;

[0124] 125. second communicating flow channel; 126. matching sealing surface;

[0125] 130, valve plate; 131, guide hole; 132, flow hole;

[0126] 141. a first elastic member; 142. a second elastic member;

[0127] 151, limiting pin; 151a, first contact surface; 151b, second contact surface; 151c, shoulder; 151d, connecting portion;

[0128] 152, locking rod;

[0129] 160, first valve body; 161, first external threaded portion; 162, first fixed surface; 163, flange portion; 163a, second transition cavity; 164, third communication flow channel; 165, guide valve hole; 166, conical boss;

[0130] 170, second valve body; 171, second external threaded portion; 172, second fixing surface; 173, first internal threaded portion; 174, fourth communication flow channel;

[0131] C1, central axis;

[0132] 200. Flow regulating device;

[0133] 210, valve seat; 220, valve core; 221, positioning column;

[0134] 230, valve plate; 231, guide hole; 232, flow hole; 234, avoidance hole;

[0135] 241, a first elastic member; 242, a second elastic member;

[0136] 251, limiting pin; 251a, supporting boss; 251b, second contact surface;

[0137] 252, locking rod; 252a, guide plate; 252b, first contact surface; 252c, accommodating space;

[0138] 10. Shock absorber;

[0139] 301, housing; 310, outer housing; 320, inner housing;

[0140] 331, piston rod; 331a, mounting cavity; 331b, second internal threaded portion; 331c, side through hole;

[0141] 332, piston valve; 333, bottom valve;

[0142] 300a, liquid storage chamber; 300b, second chamber; 300c, first chamber;

[0143] 340, drive module;

[0144] 341, magnetic isolation ring; 341a, limiting groove; 341b, sealing assembly groove;

[0145] 342, matching sealing ring; 346, pilot valve plug; 346a, pilot sealing surface; 347, coil;

[0146] 351, first guide sleeve; 352, second guide sleeve; 353, third elastic member; 354, fourth elastic member;

[0147] 361, coil support; 361a, center column; 362, coil plastic cap; 362a, center hole; 363, coil metal cap;

[0148] 370, core cover; 371, positioning boss; 370a, first chamber; 370b, second chamber; 370c, guide groove;

[0149] 380, magnetic core; 381, first core body; 382, ​​second core body; 380a, first mounting groove; 380b, second mounting groove; 380c, ventilation hole; 380d, ventilation channel;

[0150] 1. Vehicle. DETAILED DESCRIPTION

[0151] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0152] According to the first aspect of the present application, referring to Figures 1 to 5 As shown, the present application provides a flow regulating device 100, which is arranged in a housing 301 to at least separate the internal space of the housing 301 into a first chamber 300c and a second chamber 300b. For example, when the flow regulating device 100 of the present application is applied to the shock absorber 10, the first chamber 300c can be a recovery chamber, and the second chamber 300b can be a compression chamber. The flow regulating device 100 is formed with a first channel connecting the first chamber 300c and the second chamber 300b. The flow regulating device 100 includes: a valve seat 110, a valve core 120, a valve plate 130 and a second elastic member 142.

[0153] The valve core 120 can move relative to the valve seat 110 to adjust the communication damping of the first channel; it can be understood that the valve core 120 and the valve seat 110 can move relatively close to or away from the valve seat 110, so that the valve core 120 and the valve seat 110 have different distances.

[0154] The valve disc 130 is movably disposed between the valve seat 110 and the valve core 120; the second elastic member 142 is used to apply a second elastic force to the valve disc 130, so that the valve disc 130 has a tendency to abut against the valve seat 110. It can be understood that when the force of the fluid on the valve disc 130 is greater than the second elastic force, the second elastic force can be overcome to push the valve disc 130 to move away from the valve seat 110.

[0155] By adopting the above technical solution, on the basis that the valve core 120 can move relative to the valve seat 110 to adjust the communication damping of the first channel, a movable valve plate 130 is arranged between the valve seat 110 and the valve core 120, and a second elastic member 142 is arranged to independently apply elastic force to the valve plate 130, so that the valve core 120 and the valve plate 130 can adjust their respective positions respectively. Under the action of the fluid, the valve plate 130 has different positions, so that the first channel has different structural forms to adapt to different fluid flow states, thereby improving the flexibility of flow regulation.

[0156] For example, refer to Figure 5 and Fig.29 As shown, when the fluid flows from the first chamber 300c to the second chamber 300b, the force exerted by the fluid on the valve plate 130 is in the same direction as the second elastic force, the valve plate 130 abuts against the valve seat 110, and a portion of the first channel is formed between the valve plate 130 and the valve core 120. Figure 4 and Fig.30 As shown, when the fluid flows from the second chamber 300b to the first chamber 300c, the force exerted by the fluid on the valve disc 130 is opposite to the direction of the second elastic force, and the valve disc 130 abuts against the valve core 120. At this time, a portion of the first channel is formed between the valve disc 130 and the valve seat 110. At the same time, the force exerted by the fluid on the valve disc 130 also helps to push the valve core 120 to move away from the valve seat 110, which is conducive to the opening of the first channel.

[0157] In some embodiments, reference Figures 1 to 5 As shown, the flow regulating device 100 further includes: a first elastic member 141 and a driving module 340 .

[0158] The first elastic member 141 is used to apply a first elastic force to the valve core 120 , so that the valve core 120 tends to move away from the valve seat 110 ; the driving module 340 is used to drive the valve core 120 to move toward the valve seat 110 .

[0159] It can be understood that when only the first elastic force acts on the valve core 120 , the valve core 120 is located at the first position; when the driving module 340 acts on the valve core 120 , the valve core 120 is located at the second position.

[0160] By providing the first elastic member 141 and the second elastic member 142 , elastic forces are applied to the valve core 120 and the valve plate 130 respectively, so that the valve core 120 and the valve plate 130 can independently adjust their respective positions.

[0161] In some embodiments, reference Figures 1 to 5 As shown, the valve seat 110 has a seat cavity 111 .

[0162] The seat cavity 111 axially penetrates the valve seat 110 and communicates with the second cavity 300 b ; the seat cavity 111 constitutes at least a portion of the first passage; the valve core 120 moves between a first position and a second position relative to the valve seat 110 .

[0163] When the valve core 120 is in the first position, the valve plate 130 is clamped between the valve core 120 and the valve seat 110, and the first channel is closed, or the seat cavity 111 is connected to the first cavity 300c through the first overflow channel 100a. At this time, the fluid in the first cavity 300c and the second cavity 300b flows through the first overflow channel 100a at a first flow rate.

[0164] When the valve core 120 is in the second position, the valve plate 130 is separated from the valve core 120 or the valve seat 110, and a second overflow channel 100b connecting the seat cavity 111 and the first cavity 300c is formed between the valve core 120 and the valve seat 110. At this time, the fluid in the first cavity 300c and the second cavity 300b flows through the second overflow channel 100b at a second flow rate.

[0165] By adopting such a scheme, through the position adjustment of the seat cavity 111 and the valve core 120, different openings can be formed between the seat cavity 111 and the first cavity 300c (that is, the second cavity 300b and the first cavity 300c), that is, the fluid between the first cavity 300c and the second cavity 300b can be exchanged at different flow rates, thereby improving the flow regulation capability and being able to meet the needs of various vibration reduction working conditions.

[0166] In some embodiments, reference Figure 4 and Figure 5 As shown, the second overflow channel 100b is formed between the valve core 120 and the valve plate 130 or between the valve seat 110 and the valve plate 130;

[0167] When the valve plate 130 is separated from the valve core 120 , the second overflow channel 100 b is at least formed by the distance between the valve core 120 and the valve plate 130 ; when the valve plate 130 is separated from the valve seat 110 , the second overflow channel 100 b is at least formed by the distance between the valve core 120 and the valve seat 110 .

[0168] By adopting such a solution, by providing a movable valve plate 130, the second overflow channel 100b is formed between the valve core 120 and the valve plate 130 or between the valve core 120 and the valve seat 110, which can adapt to different fluid states. When the fluid flows from the first chamber 300c to the second chamber 300b, the second overflow channel 100b is formed between the valve core 120 and the valve plate 130. When the fluid flows from the second chamber 300b to the first chamber 300c, the second overflow channel 100b is formed between the valve core 120 and the valve plate 130. At this time, the fluid in the seat chamber 111 directly enters the second chamber 300b along the second overflow channel 100b, without flowing through the flow hole 132 of the valve plate 130 and the core chamber 121a of the valve core 120, thereby avoiding the generation of additional flow resistance.

[0169] As a preferred solution, refer to Figures 3 to 5 As shown, the valve core 120 can slide relative to the valve seat 110 along the central axis C1; the valve plate 130 can slide relative to the valve core 120 along the central axis C1; with such an arrangement, the valve core 120 and the valve plate 130 move on the same central axis C1, the positions are relatively concentrated, and the structure is compact, which helps to improve the stability and reliability during the working process and reduce the vibration and noise caused by unbalanced force.

[0170] In some embodiments, reference Figure 3 and Figure 6 As shown, the valve plate 130 has a flow hole 132 .

[0171] The flow hole 132 axially penetrates the valve plate 130; when the valve core 120 is separated from the valve plate 130, the flow hole 132 constitutes a part of the first channel, and the flow hole 132 communicates between the first cavity 300c and the seat cavity 111. Optionally, a plurality of flow holes 132 are arranged at intervals in the circumferential direction.

[0172] By providing the flow holes 132 , the valve plate 130 allows fluid to flow on both sides in the axial direction, while keeping the pressure of the fluid on both sides of the valve plate 130 equal.

[0173] In some embodiments, reference Figure 3 As shown, when the valve core 120 is in the first position, at least the valve seat 110 forms a first overflow channel 100a connecting the seat cavity 111 and the first cavity 300c. At this time, the fluids in the first cavity 300c and the second cavity 300b flow through the first overflow channel 100a at a first flow rate.

[0174] It can be understood that the first overflow channel 100 a can be formed by the valve seat 110 , or the first overflow channel 100 a can be formed by the cooperation of the valve seat 110 and the valve plate 130 .

[0175] Specifically, the second flow rate is greater than the first flow rate.

[0176] In some embodiments, reference Figure 2 and Figure 8 As shown, the valve seat 110 has a flow opening 112. The flow opening 112 communicates between the seat cavity 111 and the first cavity 300c; the first overflow channel 100a is at least formed by the flow opening 112.

[0177] It can be understood that the flow opening 112 can be disposed between the valve seat 110 and the valve plate 130 , or the flow opening 112 can be completely disposed inside the valve seat 110 .

[0178] In some embodiments, reference Figure 2 and Figure 8 As shown, the flow opening 112 is formed at one end of the valve seat 110 close to the valve plate 130. Thus, when the valve core 120, the valve plate 130 and the seat core are abutted in sequence, a first overflow channel 100a can be formed to connect the seat cavity 111 with the first cavity 300c.

[0179] In some embodiments, reference Figure 2 , Figure 3 and Fig.10 As shown, the valve core 120 is constructed to have a stop wall 121 that can contact the end surface of the valve plate 130; the valve core 120 is formed with a core cavity 121a surrounded by the stop wall 121, and the flow hole 132 is connected between the core cavity 121a and the seat cavity 111. Through the setting of the core cavity 121a, a pressure accumulation space is formed. When the fluid pressure in the core cavity 121a accumulates to a certain value, the action of the driving module 340 can be overcome to push the valve core 120 to move.

[0180] In some embodiments, reference Figure 2 and Figure 3 As shown, the force-bearing area of ​​the valve disc 130 in the core cavity 121a is smaller than the force-bearing area of ​​the valve disc 130 in the seat cavity 111. In this way, since the core cavity 121a is connected to the seat cavity 111, when the fluid flows slowly or there is no flow between the two, the fluid pressures in the core cavity 121a and the seat cavity 111 are approximately equal, and under the limitation that the force-bearing area of ​​the valve disc 130 in the core cavity 121a is smaller than the force-bearing area of ​​the valve disc 130 in the seat cavity 111, the pressure of the fluid in the seat cavity 111 on the valve disc 130 is greater than the pressure of the fluid in the core cavity 121a on the valve disc 130, that is, the fluid generates a combined force on the valve disc 130 toward the valve core 120, and this combined force increases with the increase of the pressure in the seat cavity 111 and the core cavity 121a, and this part of the combined force helps to push the valve core 120 to separate from the valve seat 110, thereby opening the second overflow channel 100b.

[0181] In some embodiments, reference Figure 2As shown in FIG. 3 , at least part of the stop wall 121 protrudes in the axial direction to form a tip portion 122. The tip portion 122 can abut against the valve plate 130 and the valve seat 110 to close the second overflow channel 100b, or be spaced a certain distance from the valve plate 130 to form the second overflow channel 100b. At the same time, the provision of the tip portion 122 can reduce the radial channel length of the second overflow channel 100b formed between the valve core 120 and the valve plate 130, thereby reducing the damping of the second overflow channel 100b.

[0182] In some embodiments, reference Figure 2 and Figure 3 As shown, the valve seat 110 further has a flow groove 113 .

[0183] The flow groove 113 is formed at one end of the valve seat 110 close to the valve core 120; wherein, the flow groove 113 constitutes at least a part of the seat cavity 111; the axial projection contour of the end of the tip portion 122 close to the valve plate 130 is inside the axial projection contour of the side wall of the flow groove 113.

[0184] By setting the flow groove 113, it is ensured that the valve plate 130 has a larger contact area with the fluid in the seat cavity 111 than the core cavity 121a, so that the force area of ​​the valve plate 130 in the core cavity 121a is smaller than the force area of ​​the valve plate 130 in the seat cavity 111.

[0185] As a specific solution, the flow groove 113 is formed by a concave end of the valve seat 110 close to the valve core 120, and at least part of the flow groove 113 is located at the same axial position as the flow notch, so that the thickness of the side wall of the valve seat 110 corresponding to the flow notch is reduced, thereby reducing the radial length of the flow notch, thereby reducing the pressure loss of the fluid when passing through the flow notch, and the change in flow velocity, so that the fluid flows in the flow notch more smoothly.

[0186] In some embodiments, reference Figure 2 and Figure 3 As shown, the first elastic member 141 and the second elastic member 142 are respectively located in the core cavity 121a. In this way, by arranging the first elastic member 141 and the second elastic member 142 in the core cavity 121a, the total axial length of the valve seat 110, the valve core 120, and the first elastic member 141 and the second elastic member 142 is reduced, and the structure is compact.

[0187] In some embodiments, reference Figure 2 , Figures 9 to 11 As shown, the valve core 120 has: a first communication flow channel 124, a second communication flow channel 125 and a first transition chamber 123a.

[0188] The first communication channel 124 is used to communicate with the first cavity 300c; the second communication channel 125 is used to communicate with the core cavity 121a; the first transition cavity 123a is arranged between the first communication channel 124 and the second communication channel 125; the valve core 120 also has an outer edge portion 123, and the first transition cavity 123a is formed by the outer edge portion 123, and the first transition cavity 123a is located at one end of the valve core 120 away from the core cavity 121a. The first transition cavity 123a cooperates with a pilot valve plug 346 to control the communication or blocking of the first communication channel 124 and the first transition cavity 123a.

[0189] By adopting such a scheme, through the setting of the first connecting flow channel 124, the second connecting flow channel 125 and the first transition chamber 123a, when the fluid pressure of the first chamber 300c is greater than the set threshold, the pilot valve plug 346 can be pushed to connect the first connecting flow channel 124 with the first transition chamber 123a, so that the first connecting flow channel 124, the first transition chamber 123a and the second connecting flow channel 125 constitute a second channel connecting the first chamber 300c and the second chamber 300b to meet different flow regulation requirements.

[0190] In some embodiments, reference Figure 2 , Figures 9 to 11 As shown, the first communication channel 124 includes: a first overflow hole 124a, a second overflow hole 124b and an overflow socket.

[0191] The first overflow hole 124a extends along the axial direction of the valve core 120 and is connected to the first chamber 300c; the second overflow hole 124b extends along the radial direction of the valve core 120 and is connected to the first overflow hole 124a; the overflow socket extends along the axial direction of the valve core 120 and the overflow socket is connected between the second overflow hole 124b and the first transition chamber 123a; wherein, the overflow socket cooperates with the pilot valve plug 346 to control the communication or blockage between the overflow socket and the first transition chamber 123a.

[0192] As a specific solution, the number of the first overflow holes 124a is twice the number of the second overflow holes 124b, and the plurality of first overflow holes 124a are arranged at different circumferential positions. The first overflow hole 124a extends axially, and one end is open axially. Both ends of the second overflow hole 124b radially penetrate the side wall of the valve core 120, which facilitates the processing of the second overflow hole 124b. One end of the overflow socket axially penetrates the bottom wall of the first transition chamber 123a to communicate with the first transition chamber 123a, and the other end is communicated with the second overflow hole 124b.

[0193] A plurality of second communication channels 125 are provided, and the plurality of second communication channels 125 are provided at different circumferential positions and penetrate the valve core 120 in the axial direction to communicate with the first transition chamber 123 a and the core chamber 121 a .

[0194] In some embodiments, reference Figure 2 , Figures 9 to 11 and Fig.26 As shown, the overflow socket 124c cooperates with the pilot valve plug 346 so that the pilot valve plug 346 can close or open the overflow socket 124c, and the pilot valve plug 346 is provided with a pilot sealing surface 346a. Correspondingly, the inner wall of the valve core 120 forming the overflow socket 124c has a matching sealing surface 126, and the pilot sealing surface 346a can contact with the matching sealing surface 126 to prevent the overflow socket 124c from communicating with the first transition chamber 123a.

[0195] In some embodiments, reference Figure 2 , Figures 12 to 16 As shown, the flow regulating device 100 further includes: a first valve body 160 and a second valve body 170 .

[0196] The first valve body 160 and the second valve body 170 are fixedly connected, and the valve seat 110 is fixedly connected to the second valve body 170. The first valve body 160 is provided with a first external threaded portion 161, and the first valve body 160 is fixedly connected to the piston rod 331 by threaded connection at the first external threaded portion 161. A first fixed surface 162 is also provided on the outer side wall of the first valve body 160. Correspondingly, the second valve body 170 is provided with a second external threaded portion 171, and the second valve body 170 is fixedly connected to the piston valve 332 by threaded connection at the second external threaded portion 171. In addition, a second fixed surface 172 matching the first fixed surface 162 is provided on the inner side wall of the second valve body 170, and at least part of the first fixed surface 162 is inserted into the space surrounded by the second fixed surface 172, and the first fixed surface 162 and the second fixed surface 172 are in contact with each other. Optionally, the first fixed surface 162 and the second fixed surface 172 are interference fit.

[0197] The first valve body 160 and the second valve body 170 are arranged to enclose an overflow space 100d. The valve core 120, the valve plate 130 and the valve seat 110 are arranged in the overflow space 100d, and the valve seat 110 is fixedly connected to the second valve body 170, and the valve core 120 and the valve plate 130 can move in the axial direction.

[0198] Specifically, the second valve body 170 is further provided with a first internal threaded portion 173, and the valve seat 110 is provided with a third external threaded portion 114 matching the first internal threaded portion 173, so that the second valve body 170 can be fixedly connected to the valve seat 110 by threaded connection.

[0199] In some embodiments, reference Figure 2 , Figure 3 and Fig.16As shown, the first valve body 160 has a third communication channel 164 for communicating with the first chamber 300c. At least part of the valve core 120 is slidably disposed in the first valve body 160, and a second transition chamber 163a is formed between the valve core 120 and the first valve body 160, and the second transition chamber 163a is respectively communicated with the first communication channel 124 and the third communication channel 164.

[0200] Specifically, the first valve body 160 is further formed with a flange portion 163 protruding to the overflow space 100d, at least a portion of the flange portion 163 is inserted into the first transition cavity 123a, and the outer wall of the flange portion 163 and the peripheral side wall of the first transition cavity 123a form a sealing fit, which can be an interference fit or a seal using a sealing ring. At the same time, through the cooperation of the outer edge portion 123 and the flange portion 163, a second transition cavity 163a is also formed on the radial outer side of the first transition cavity 123a.

[0201] The outer wall of the valve core 120 also forms a sealing fit with the inner wall of the first valve body 160 , and the sealing fit may specifically be an interference fit or a seal using a sealing ring.

[0202] In some embodiments, reference Figure 2 , Figure 12 to Figure 14 As shown, the second valve body 170 has a fourth connecting flow channel 174 for connecting the first chamber 300c with the seat chamber 111 and / or the core chamber 121a, that is, the fourth connecting flow channel 174 is connected to the first overflow channel 100a or the second overflow channel 100b, and then connects to the seat chamber 111 or the core chamber 121a.

[0203] refer to Figure 2 , Figure 12 to Figure 14 A plurality of fourth communication channels 174 are provided on the side wall of the second valve body 170, and the fourth communication channels 174 connect the overflow space 100d and the first cavity 300c, so that the seat cavity 111 can be connected with the first cavity 300c through the first overflow channel 100a or the second overflow channel 100b.

[0204] Through the arrangement of the above-mentioned connecting flow channels, when the pressure of the fluid in the first chamber 300c is greater than the pressure of the fluid in the second chamber 300b, and the valve core 120, the valve plate 130 and the valve seat 110 are in contact with each other, the fluid in the first chamber 300c enters the second transition chamber 163a and the first connecting flow channel 124 through the third connecting flow channel 164, so that the pressure in the second transition chamber 163a and the first connecting flow channel 124 increases, and the pilot valve plug 346 is pushed open to connect the first connecting flow channel 124 and the first transition chamber 123a, and then the fluid passes through the first transition chamber 123a, the second connecting flow channel 125, the core chamber 121a and the flow hole 132 in sequence and enters the seat chamber 111.

[0205] When the pressure of the fluid in the second chamber 300b is greater than the pressure of the fluid in the first chamber 300c, and the valve core 120, the valve plate 130 and the valve seat 110 are in contact, as the pressure in the core chamber 121a and the seat chamber 111 accumulates, the valve plate 130, the valve core 120 and the pilot valve plug 346 can be pushed to move axially to open the second overflow channel 100b between the valve seat 110 and the valve plate 130, and the fluid in the seat chamber 111 can enter the first chamber 300c through the second overflow channel 100b.

[0206] In some embodiments, reference Figure 7 As shown, at least one of the first elastic member 141 and the second elastic member 142 is a coil spring.

[0207] As a preferred solution, the first elastic force applied by the first elastic member 141 is different from the second elastic force applied by the second elastic member 142. It can be understood that: the first elastic member 141 and the second elastic member 142 have different spring coefficients, or the first elastic member 141 and the second elastic member 142 have different spring lengths; or the first elastic member 141 and the second elastic member 142 have different spring outer diameters.

[0208] In some embodiments, reference Figure 2 , Figure 3 and Figure 7 As shown, the valve seat 110 has or is connected with: a conducting member.

[0209] At least part of the transmission element is located between the valve seat 110 and the valve core 120; the transmission element is respectively combined with the first elastic element 141 and the second elastic element 142. The transmission element is fixed relative to the valve seat 110, so that the valve seat 110 and the valve core 120 are independently adjusted based on the valve seat 110, ensuring that the valve core 120 and the valve plate 130 work stably at the expected position or have the expected movement form.

[0210] Specifically, a portion of the conductive member is located in the core cavity 121a, which reduces the total axial length of the conductive member and the valve core 120 and makes the structure compact.

[0211] In some embodiments, reference Figure 2 , Figure 3 and Figure 7 As shown, the conductive member includes a first contact surface 151a and a second contact surface 151b.

[0212] The first contact surface 151a contacts the first elastic member 141 ; the second contact surface 151b contacts the second elastic member 142 ; the first contact surface 151a and the second contact surface 151b are arranged opposite to each other so as to face the direction where the valve core 120 and the valve seat 110 are located respectively.

[0213] By arranging two contact surfaces opposite to each other on the conductive member to cooperate with the elastic member, the first elastic member 141 and the second elastic member 142 can be as close as possible, and the structure is compact.

[0214] Through the cooperation between the first elastic member 141, the second elastic member 142 and the conductive member, the conductive member can limit the first elastic member 141 and the second elastic member 142 respectively while providing abutment base for the two elastic members respectively, thereby improving the stability of the first elastic member 141 and the second elastic member 142 when being compressed.

[0215] In some embodiments, at least one of the first contact surface 151a and the second contact surface 151b is configured as an annular step surface. With this design, stable contact can be provided for the first elastic member 141 and the second elastic member 142 at different positions in the circumferential direction, thereby ensuring the stability of the first elastic member 141 and the second elastic member 142.

[0216] For example, refer to Figure 7 As shown, the first contact surface 151a and the second contact surface 151b form an annular step structure. In this way, the first elastic member 141 and the second elastic member 142 can be matched through an annular step structure, which has a simple structure and is convenient for assembling the first elastic member 141 and the second elastic member 142.

[0217] In some embodiments, reference Figure 7 As shown, the conductive member has: a convex shoulder 151c. The convex shoulder 151c is located between the valve core 120 and the valve plate 130; the first contact surface 151a and the second contact surface 151b are respectively formed on the two opposite sides of the convex shoulder 151c in the axial direction. That is, in this embodiment, the first elastic member 141 and the second elastic member 142 cooperate with the same conductive member, so that the first elastic member 141 and the second elastic member 142 only have one positioning reference, which reduces the assembly and positioning process of the conductive member and the two elastic members.

[0218] In some embodiments, reference Figure 3 and Figure 7 As shown, the conductive member further includes: a connecting portion 151d.

[0219] The connecting portion 151d is used to form a fixed connection with the valve seat 110. It can be understood that the conductive member is fixed to the valve seat 110 directly or indirectly.

[0220] For example, refer to Figure 1 and Figure 2 As shown, the transmission member is fixed to a piston valve 332 , and the valve seat 110 is fixed to the piston valve 332 , thus constituting relative fixation of the transmission member and the valve seat 110 .

[0221] In some embodiments, one end of the first elastic member 141 contacts the first contact surface 151a, and the other end of the first elastic member 141 contacts the valve core 120; one end of the second elastic member 142 contacts the second contact surface 151b, and the other end of the second elastic member 142 contacts the valve plate 130.

[0222] For example, refer to Figure 2 , Figure 3 and Figure 7 As shown, the transmission member includes a limit pin 151 and a locking rod 152. A connection portion 151d is provided at one end of the limit pin 151. The connection portion 151d is threadedly connected to one end of the locking rod 152. The other end of the locking rod 152 is fixedly connected to the piston valve 332, and the valve seat 110 is fixed to the piston valve 332, so that the limit pin 151 and the valve seat 110 are relatively fixed. The first contact surface 151a and the second contact surface 151b are formed on the limit pin 151 at the same time. The first elastic member 141 is located between the first contact surface 151a and the valve core 120, and the second elastic member 142 is located between the second contact surface 151b and the valve plate 130.

[0223] In some embodiments, reference Figure 6 As shown, the valve plate 130 has a guide hole 131. The guide hole 131 penetrates the valve plate 130 in the axial direction, and at least part of the conductive member of the guide hole 131 is penetrated in the guide hole 131 to form a sliding connection.

[0224] In some embodiments, reference Figures 17 to 20 As shown, the transmission member includes: a locking rod 252 and a limiting pin 251.

[0225] The limiting pin 251 and the locking rod 252 are respectively fixed relative to the valve seat 210. The locking rod 252 is formed with a first contact surface 252b to contact the first elastic member 241; the limiting pin 251 is formed with a second contact surface 251b to contact the second elastic member 242.

[0226] Specifically, the limiting pin 251 and the locking rod 252 are fixedly connected, and the locking rod 252 is fixed to the piston valve, and the valve seat 210 is fixed to the piston valve, thus constituting relative fixation of the locking rod 252 and the valve seat 210, and relative fixation of the limiting pin 251 and the valve seat 210.

[0227] In some embodiments, reference Figures 18 to 20 As shown, the first contact surface 252b is located between the second contact surface 251b and the valve core 220. That is, by defining the relative positions of the first contact surface 252b and the second contact surface 251b, the first elastic member 241 is located between the second elastic member 242 and the valve core 220.

[0228] In some embodiments, the valve disc 230 is slidably connected to the valve seat 210 via a locking member and / or a limiting pin 251. Thus, the movement of the valve disc 230 is guided by the locking rod 252 or the limiting pin 251.

[0229] In some embodiments, reference Figures 17 to 22 As shown, the valve plate 230 further has an avoidance hole 234. A plurality of avoidance holes 234 are arranged at different circumferential positions and are arranged around the guide hole 231; the avoidance holes 234 penetrate the valve plate 230 in the axial direction. In the radial direction, the avoidance holes 234 are located between the guide hole 231 and the flow hole 232.

[0230] The locking rod 252 has a guide piece 252 a. The guide pieces 252 a are arranged at different circumferential positions. The guide pieces 252 a extend in the axial direction and at least a part of the guide pieces 252 a penetrates the avoidance hole 234 .

[0231] The avoidance hole 234 cooperates with the guide plate 252a to prevent the valve plate 230 from rubbing against the locking rod 252 during movement, thereby preventing the force from being unbalanced.

[0232] In some embodiments, reference Figures 17 to 21 As shown, a plurality of guide pieces 252a enclose an accommodation space 252c, and at least part of the limiting pins 251 are located in the accommodation space 252c. In this way, the axial space required by the limiting pins 251 can be further reduced, and the structure is compact.

[0233] In some embodiments, reference Figures 17 to 21 As shown, the first contact surface 252b is formed on the guide piece 252a, that is, the first elastic member 241 abuts between the guide piece 252a and the valve core 220. The second contact surface 251b is formed on the limiting nail 251. More specifically, the limiting nail 251 has a supporting boss 251a, the second contact surface 251b is formed on the supporting boss 251a, and the second elastic member 242 abuts between the supporting boss 251a and the valve plate 230.

[0234] In some embodiments, reference Figures 17 to 20 As shown, the valve core 220 is further formed with a positioning column 221 extending in the axial direction, the positioning column 221 protrudes into the core cavity, and at least part of the first elastic member 241 is sleeved on the positioning column 221. By setting the positioning column 221, the first elastic member 241 is positioned so that the first elastic member 241 is stably maintained between the guide piece 252a and the valve core 220.

[0235] In some embodiments, reference Figure 1 , Fig.23 and Fig.24As shown, the flow regulating device 100 further includes a driving module 340. The driving module 340 is used to drive the valve core 120 to move toward the valve seat 110, so that the valve core 120 can overcome the first elastic force of the first elastic member 141 and abut against the valve plate 130 and the valve seat 110, thereby closing the second overflow channel 100b.

[0236] In some embodiments, reference Figure 23 to Figure 27 As shown, the shock absorber 10 further includes a driving module 340 , which includes: a coil support 361 , a coil plastic cap 362 , a coil metal cap 363 , an iron core cover 370 , a magnetic core 380 , a magnetic isolation ring 341 and a pilot valve plug 346 .

[0237] The driving module 340 includes a coil support 361, a coil plastic cap 362 and a coil metal cap 363. The coil plastic cap 362 is provided with a center hole 362a, and the coil support 361 is provided with a center column 361a corresponding to the center hole 362a. Copper wire is wound around the outside of the coil support 361, and the two ends of the coil 347 wound by the copper wire are respectively placed through the two line slots of the coil support 361, and pass through the side slots of the coil plastic cap 362, and then the center hole 362a of the coil plastic cap 362 is put on the center column 361a of the plastic support, so as to fix the copper wire in the line slot.

[0238] The inner cavity of the coil bracket 361 is provided with an iron core cover 370, and the top of the coil bracket 361 is provided with a coil metal cap 363, the bottom surface of the coil metal cap 363 is abutted against the top surface of the iron core cover 370. When the coil 347 is energized, the magnetic lines of force are conducted through the metal cap, the iron core cover 370 and the magnetic valve body, forming a strong magnetic force, driving the magnetic core 380 and the valve core 120 to attract each other.

[0239] The core cover 370 is constructed as a rotating body structure. A positioning boss 371 is provided on the top of the core cover 370. The positioning boss 371 positions the coil metal cap 363 and the coil bracket 361 by cooperating with the concave and convex parts of the coil metal cap 363 and the coil bracket 361.

[0240] In some embodiments, reference Figure 23 to Figure 27As shown, the magnetic core 380 can be slidably disposed inside the core cover 370, and the two are clearance-matched, and the magnetic core 380 can move up and down along the axial direction of the core cover 370. The core cover 370 is provided with a first chamber 370a and a second chamber 370b with different inner diameters, and the first chamber 370a and the second chamber 370b are arranged at different axial positions. The magnetic core 380 includes a first core body 381 and a second core body 382, ​​and the first core body 381 and the second core body 382 are arranged at different axial positions. The outer diameter of the second core body 382 is greater than the outer diameter of the first core body 381, and the first core body 381 is slidably matched with the first chamber 370a, and the second core body 382 is slidably matched with the second chamber 370b, thereby limiting the sliding stroke of the core cover 370 in the core cover 370.

[0241] At least part of the pilot valve plug 346 is disposed inside the magnetic core 380 and is fixed relative to the magnetic core 380 . The bottom of the pilot valve plug 346 is a rotating body structure with an inclined surface or an arc surface, which is used to seal the overflow socket 124 c of the valve core 120 .

[0242] In some embodiments, reference Figure 23 to Figure 27 As shown, the top of the core cover 370 also has a guide groove 370c, at least part of which is formed inside the positioning boss 371. The drive module 340 also includes a first guide sleeve 351, at least part of which is embedded inside the guide groove 370c. One end of the pilot valve plug 346 is slidably matched with the first guide sleeve 351, so that the first guide sleeve 351 guides the up and down movement of the pilot valve plug 346. The outer wall of the first guide sleeve 351 has at least one groove, which serves as a circulation channel for the upper and lower fluids or gases.

[0243] The first valve body 160 is also provided with a guide valve hole 165, which passes through the first valve body 160 axially. The driving module 340 also includes a second guide sleeve 352, at least a portion of the second guide sleeve 352 is embedded in the guide valve hole 165, and the other end of the pilot valve plug 346 passes through the second guide sleeve 352 and slides with the second guide sleeve 352, so that the first guide sleeve 351 and the second guide sleeve 352 cooperate to guide the up and down movement of the pilot valve plug 346, thereby improving the stability of the movement of the pilot valve plug 346.

[0244] In some embodiments, reference Figure 23 to Figure 27As shown, the magnetic core 380 also has a first mounting groove 380a and a second mounting groove 380b, wherein the first mounting groove 380a is arranged at one end of the magnetic core 380, and the second mounting groove 380b is arranged at the other end of the magnetic core 380. The driving module 340 also includes: a third elastic member 353 and a fourth elastic member 354. At least part of the third elastic member 353 is arranged in the first mounting groove 380a, and one end of the third elastic member 353 abuts against the core cover 370 or the first guide sleeve 351 of the magnetic core 380. At least part of the fourth elastic member 354 is arranged in the second mounting groove 380b, and one end of the fourth elastic member 354 abuts against the first valve body 160 or the first guide sleeve 351. By setting the third elastic member 353 and the fourth elastic member 354, the static suspension of the magnetic core 380 in the axial direction can be achieved.

[0245] Exemplarily, the third elastic member 353 is a spring, and the third elastic member 353 is sleeved on the pilot valve plug 346. The fourth elastic member 354 is a spring, and the fourth elastic member 354 is sleeved on the pilot valve plug 346.

[0246] In some embodiments, reference Fig.25 and Fig.26 As shown, the magnetic core 380 also has a ventilation hole 380c and a ventilation channel 380d. The ventilation hole 380c penetrates the first core body 381 along the radial direction of the magnetic core 380, and a plurality of ventilation holes 380c are arranged in the circumferential direction of the first core body 381. The ventilation channel 380d is arranged on the side wall of the second core body 382 along the axial extension, and a plurality of ventilation holes 380d are arranged at intervals in the circumferential direction of the second core body 382, ​​and the ventilation channel 380d is connected with the ventilation hole 380c. Through the arrangement of the ventilation hole 380c and the ventilation channel 380d, the first mounting groove 380a, the chamber at the top of the magnetic core 380, the chamber at the bottom of the magnetic core 380, and the second mounting groove 380b are connected, and the pressure difference between the chamber at the top of the magnetic core 380 and the chamber at the bottom of the magnetic core 380 is reduced when the magnetic core 380 moves, thereby reducing the obstruction to the movement of the magnetic core 380.

[0247] In some embodiments, reference Fig.23 As shown, the magnetic isolation ring 341 is constructed as a rotating body structure, a center hole 362a is provided in the middle of the magnetic isolation ring 341, and the magnetic core 380 can be slidably inserted into the center hole 362a.

[0248] The magnetic isolation ring 341 is provided with limiting grooves at the top and bottom, and the two limiting grooves are arranged coaxially. A sealing boss is radially arranged on the outer side of the core cover 370, and the bottom surface of the sealing boss axially abuts against the bottom wall of the limiting groove on the upper part of the magnetic isolation ring 341. The outer wall of the sealing boss is interference-fitted with the inner wall of the limiting groove on the upper part of the magnetic isolation ring 341, thereby sealing the matching area between the core cover 370 and the magnetic isolation ring 341 to prevent leakage. The cross-section of the lower limiting groove 341a is set to be conical, and the top of the first valve body 160 is provided with a conical boss 166, which cooperates with the limiting groove 341a at the lower part of the magnetic isolation ring 341 to accurately position the magnetic isolation ring 341 radially.

[0249] By setting the limiting groove, the sealing requirement can be met while the core cover 370 and the first valve body 160 connected thereto can be precisely positioned radially.

[0250] The outer wall of the magnetic isolation ring 341 is also provided with a sealing assembly groove 341 b , in which a matching sealing ring 342 is assembled to seal the outer wall of the magnetic isolation ring 341 and the inner wall of the piston rod 331 .

[0251] According to the second aspect of the present application, referring to Figure 1 As shown, a vibration absorber 10 is provided, and the vibration absorber 10 includes the above-mentioned flow regulating device 100. The vibration absorber 10 has all the beneficial effects of the above-mentioned flow regulating device 100, and the present application will not repeat them here.

[0252] In some embodiments, reference Figure 1 and Figure 2 , Figure 23 to Figure 28 As shown, the shock absorber 10 further includes: a housing 301 , a piston rod 331 , a piston valve 332 and a bottom valve 333 .

[0253] Specifically, the housing 301 includes an outer housing 310 and an inner housing 320. The inner wall of the outer housing 310 and the outer wall of the inner housing 320 form a portion of the liquid storage chamber 300a, and the liquid storage chamber 300a stores fluid and inert gas at a certain pressure. The bottom valve 333 is fixedly arranged at the bottom of the inner housing 320, and another portion of the liquid storage chamber 300a is formed between the bottom valve 333 and the bottom wall of the outer housing 310.

[0254] The piston valve 332 and the flow regulating device 100 are respectively and movably arranged inside the inner shell 320, a compression chamber (i.e., the second chamber 300b mentioned above) is formed between the bottom valve 333 and the piston valve 332, and a recovery chamber (i.e., the first chamber 300c mentioned above) is formed on the side of the piston valve 332 away from the bottom valve 333. The flow regulating device 100 is connected between the piston valve 332 and the piston rod 331, so that the piston rod 331, the flow regulating device 100 and the piston valve 332 are connected to form a piston motion assembly, and then the states of the compression chamber and the recovery chamber are changed when the piston motion assembly moves.

[0255] The shock absorber 10 is installed above the wheel axle for vibration reduction. When the vehicle body and the wheel move relative to each other, the piston movement assembly moves up and down inside the inner shell 320. The fluid inside the shock absorber 10 repeatedly flows from the liquid storage chamber 300a and the recovery chamber through different channels or flow channels into the compression chamber, or flows from the compression chamber through different channels or flow channels to the liquid storage chamber 300a and the recovery chamber, and converts the vibration energy into heat energy of the fluid and gas and dissipates it into the atmosphere, so that the shock absorber 10 can work efficiently in a lower temperature range.

[0256] The piston rod 331 is the main body connected to the flow regulating device 100. The piston rod 331 is constructed as a rotating body structure, and a mounting cavity 331a is provided inside the piston rod 331. At least part of the driving module 340 is disposed in the mounting cavity 331a. A second internal threaded portion 331b is provided on a part of the inner wall of the mounting cavity 331a, which cooperates with the first external threaded portion 161 of the first valve body 160 to achieve a fixed connection.

[0257] The piston rod 331 is provided with a side through hole 331 c, which radially penetrates the side wall of the piston rod 331 to communicate with the installation cavity 331 a, thereby realizing ventilation on both sides of the piston rod 331 during the movement of the piston rod 331.

[0258] The present application describes the working process of the shock absorber 10 by way of example:

[0259] When the vehicle 1 equipped with the shock absorber 10 of the present application is traveling on a relatively flat road, when the coil 347 in the drive module 340 is not energized, the valve core 120 and the valve plate 130, under the joint action of the elastic members, keep the second overflow channel 100b in a normally open state, which is equivalent to the flow regulating device 100 being a normally open valve.

[0260] When the piston rod 331 vibrates upward, the pressure in the recovery chamber (i.e., the first chamber 300c) increases. Fig.29 As shown, the fluid flows from the recovery chamber into the compression chamber (i.e., the second chamber 300b) through the second overflow channel 100b between the valve plate 130 and the valve core 120, and at the same time, the fluid in the oil storage chamber also flows into the compression chamber through the bottom valve 333. In this state, the fluid flow is large, the fluid damping is small, and the shock absorber 10 behaves as "soft".

[0261] When the piston rod 331 vibrates downward, the pressure in the recovery chamber (i.e., the first chamber 300c) decreases, and the pressure in the compression chamber (i.e., the second chamber 300b) increases. Fig.30 As shown, the fluid from the compression chamber pushes the valve plate 130 to abut against the valve core 120. At this time, the fluid flows into the recovery chamber from the second overflow channel 100b between the valve plate 130 and the valve seat 110. At the same time, the fluid in the compression chamber flows into the oil storage chamber through the bottom valve 333. The gas in the liquid storage chamber 300a is compressed and buffered to absorb energy and reduce vibration. In this state, the fluid flow rate is large and the fluid damping is small.

[0262] When the coil 347 in the driving module 340 is not energized, when the piston rod 331 reciprocates upward and downward, the fluid flows back and forth in the liquid storage chamber 300a, the compression chamber, and the recovery chamber with a large flow rate, small fluid damping, and good riding comfort.

[0263] When the vehicle 1 equipped with the shock absorber 10 of the present application is traveling on a road with potholes and uneven surfaces, the coil 347 in the drive module 340 is energized, and the magnetic core 380 is pushed downward by the magnetic force. The pilot valve plug 346 on the drive module 340 pushes the valve core 120, and the valve core 120 abuts against the valve plate 130, and the valve plate 130 abuts against the valve seat 110, thereby closing (or partially closing) the second overflow channel 100b between the valve seat 110 and the valve core 120.

[0264] When the piston rod 331 vibrates upward, the pressure in the recovery chamber (i.e., the first chamber 300c) increases, and the fluid flows from the recovery chamber and the oil storage chamber into the compression chamber (i.e., the second chamber 300b). Fig.31 As shown, since the valve core 120 abuts against the valve plate 130 and the valve plate 130 abuts against the valve seat 110, the second overflow channel 100b is closed, and the fluid first flows from the flow opening 112 of the valve seat 110 (that is, the first overflow channel 100a) from the recovery chamber to the compression chamber. At this time, the flow rate is small and the damping is large, which is manifested as "hard"; in the second stage, refer to Figure 2 , Figures 9 to 11 , Fig.31As shown, the fluid flows into the first communicating flow channel 124 of the valve core 120 through the third communicating flow channel 164 and the second transition chamber 163a of the first valve body 160. When the fluid pressure at the second transition chamber 163a and the first communicating flow channel 124 increases, the electromagnetic force is overcome to push the pilot valve plug 346 on the drive module 340 open and flow into the first transition chamber 123a, and then flows from the first transition chamber 123a to the core chamber 121a through the second communicating flow channel 125 of the valve core 120, and the fluid damping is reduced; in the third stage, as shown in the figure, a large amount of fluid is accumulated in the seat chamber 111, and the oil pressure at the seat chamber 111 and the core chamber 121a increases. When the pressure is greater than the electromagnetic force, the fluid pushes the valve plate 130 and the valve core 120 to move axially to open the second overflow channel 100b, and the fluid flows from the recovery chamber to the seat chamber 111 through the second overflow channel 100b, so that the damping is further reduced.

[0265] When the piston rod 331 vibrates downward, the pressure in the compression chamber increases. Fig.33 As shown, the fluid flows out from the compression chamber to the recovery chamber and the oil storage chamber. In the first stage, since the valve core 120 abuts against the valve plate 130 and the valve plate 130 abuts against the valve seat 110, the second overflow channel 100b is closed, and the fluid first flows out from the flow opening 112 of the valve seat 110 (that is, the first overflow channel 100a) to the recovery chamber. At this time, the flow rate is small and the damping is large, which is "hard"; in the second stage, refer to Fig.34 As shown, a large amount of fluid is accumulated in the seat cavity 111 and the core cavity 121a, and the oil pressure in the seat cavity 111 and the core cavity 121a increases. When the pressure is greater than the electromagnetic force, the valve plate 130 and the valve core 120 are pushed open and move axially to open the second overflow channel 100b. The fluid flows out from the second overflow channel 100b between the valve seat 110 and the valve plate 130, and the damping is reduced.

[0266] When the coil 347 in the driving module 340 is energized and the piston rod 331 reciprocates upward and downward, the fluid flows back and forth in the liquid storage chamber 300a, the compression chamber, and the recovery chamber, and the flow rate changes, the fluid damping changes, and the ride comfort is better.

[0267] According to the third aspect of the present application, referring to Fig.35 As shown, a vehicle 1 is provided, which includes the shock absorber 10 mentioned above. The vehicle 1 has all the beneficial effects of the shock absorber 10 mentioned above, which will not be described in detail in this application.

[0268] The vehicle 1 may be a fuel vehicle, a plug-in hybrid vehicle, a new energy vehicle, etc., and this application does not make any specific limitation on this.

[0269] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0270] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0271] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0272] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A flow regulating device, characterized in that: The flow regulating device is disposed in a housing to at least separate the internal space of the housing into a first cavity and a second cavity, the flow regulating device is formed with a first channel connecting the first cavity and the second cavity, and the flow regulating device comprises: Valve seat; a valve core, movable between a first position and a second position relative to the valve seat to adjust the communication damping of the first channel; A valve plate, movably arranged between the valve seat and the valve core; a second elastic member, used for applying elastic force to the valve plate so that the valve plate tends to abut against the valve seat; a conductive member, combined with the second elastic member; Wherein, the conductive component is fixed relative to the valve seat.

2. The flow regulating device according to claim 1, characterized in that: The flow regulating device comprises: A first elastic member, used for applying elastic force to the valve core, so that the valve core has a tendency to move away from the valve seat; Wherein, the first elastic member is combined with the conductive member.

3. The flow regulating device according to claim 1, characterized in that: The transmission element is at least partially located between the valve seat and the valve core.

4. The flow regulating device according to claim 2, characterized in that: The conductive member comprises: A locking rod, formed with a first contact surface for contacting the first elastic member; A limiting pin, formed with a second contact surface for contacting the second elastic member; Wherein, the limiting pin and the locking rod are respectively fixed relative to the valve seat.

5. The flow regulating device according to claim 4, characterized in that: The first contact surface is located between the second contact surface and the valve core.

6. The flow regulating device according to claim 4, characterized in that: The valve plate is slidably connected to the valve seat via the locking member and / or the limiting pin.

7. The flow regulating device according to claim 6, characterized in that: The valve plate has: A guide hole, wherein at least part of the limiting pins are passed through the guide hole so that the valve plate and the valve seat form a sliding connection; Wherein, the guide hole penetrates the valve plate along the axial direction.

8. The flow regulating device according to claim 7, characterized in that: The valve plate also has: A plurality of avoidance holes are arranged at different circumferential positions; Wherein, the avoidance hole penetrates the valve plate along the axial direction; The locking rod has: A plurality of guide plates are arranged at different circumferential positions; Wherein, the guide piece extends axially and at least a portion of the guide piece passes through the avoidance hole.

9. The flow regulating device according to claim 8, characterized in that: A plurality of the guide plates form a receiving space, and at least part of the limiting pins are located in the receiving space.

10. The flow regulating device according to claim 2, characterized in that: The valve core is further formed with a positioning column extending along the axial direction, and at least a portion of the first elastic member is sleeved on the positioning column.

11. The flow regulating device according to any one of claims 1 to 10, characterized in that: The valve seat has: a seat cavity, communicating with the second cavity; wherein the housing cavity constitutes at least a portion of the first passage; When the valve core is in the first position, the valve sheet is clamped between the valve core and the valve seat; When the valve core is at the second position, the valve sheet is separated from the valve core or the valve seat, and a second overflow channel communicating with the seat cavity and the first cavity is formed between the valve core and the valve seat.

12. The flow regulating device according to claim 11, characterized in that: The second overflow channel is formed between the valve core and the valve plate or between the valve seat and the valve plate; When the valve plate is separated from the valve core, the second overflow channel is at least formed by the distance between the valve core and the valve plate; When the valve plate is separated from the valve seat, the second overflow channel is at least formed by the distance between the valve core and the valve seat.

13. The flow regulating device according to claim 11, characterized in that: The valve plate has: A flow hole, axially penetrating the valve plate; When the valve core is separated from the valve plate, the flow hole constitutes a part of the first channel, and the flow hole is communicated between the first chamber and the seat chamber.

14. The flow regulating device according to claim 11, characterized in that: When the valve core is at the first position, a first overflow channel communicating the seat cavity and the first cavity is formed at least by the valve seat.

15. The flow regulating device according to claim 14, characterized in that: The valve seat has: A flow opening communicating between the seat cavity and the first cavity; Wherein, the first overflow channel is at least constituted by the overflow opening.

16. The flow regulating device according to claim 15, characterized in that: The flow opening is formed at one end of the valve seat close to the valve plate.

17. The flow regulating device according to claim 13, characterized in that: The valve core is constructed to have a stop wall that can contact the end surface of the valve plate; the valve core is formed with a core cavity surrounded by the stop wall, and the flow hole is connected between the core cavity and the seat cavity.

18. The flow regulating device according to claim 17, characterized in that: The force-bearing area of ​​the valve plate in the core cavity is smaller than the force-bearing area of ​​the valve plate in the seat cavity.

19. The flow regulating device according to claim 18, characterized in that: At least a portion of the flow-stopping wall protrudes in the axial direction to form a tip portion.

20. The flow regulating device according to claim 19, characterized in that: The valve seat also has: A flow groove is formed at one end of the valve seat close to the valve core; The flow groove constitutes at least a part of the seat cavity; the axial projection contour of one end of the tip portion close to the valve plate is inside the axial projection contour of the side wall of the flow groove.

21. The flow regulating device according to claim 17, characterized in that: The second elastic members are respectively located in the core cavities.

22. The flow regulating device according to claim 17, characterized in that: The valve core has: A first communication channel, used for communicating with the first cavity; A second communication channel, used for communicating with the core cavity; A first transition chamber, disposed between the first communicating flow channel and the second communicating flow channel; Wherein, the first transition chamber cooperates with a pilot valve plug to control the communication or blocking of the first connecting flow channel and the first transition chamber.

23. The flow regulating device according to claim 22, characterized in that: The first communicating flow channel comprises: A first overflow hole extending along the axial direction of the valve core and communicating with the first chamber; a second overflow hole extending in a radial direction of the valve core and communicating with the first overflow hole; An overflow socket extending along the axial direction of the valve core and communicating between the second overflow hole and the first transition chamber; Wherein, the overflow socket cooperates with the pilot valve plug to control the communication or blockage between the overflow socket and the first transition chamber.

24. The flow regulating device according to claim 22, characterized in that: The flow regulating device also includes: A first valve body having a third communication flow channel for communicating with the first chamber; A second valve body having a fourth communication flow channel for connecting the first cavity with the seat cavity and / or the core cavity; Wherein, at least a part of the valve core is slidably disposed in the first valve body, a second transition cavity is formed between the valve core and the first valve body, and the second transition cavity is respectively communicated with the first communication flow channel and the third communication flow channel; The first valve body is fixedly connected to the second valve body, and the valve seat is fixedly connected to the second valve body.

25. A vibration absorber, characterized in that: include: case; The flow regulating device according to any one of claims 1 to 24, at least used to separate the internal space of the housing into a first chamber and a second chamber; a piston valve movably disposed in the housing to change the states of the first chamber and the second chamber when the piston valve moves; Wherein, the flow regulating device is connected to the piston valve to move synchronously with the piston valve.

26. The shock absorber according to claim 25, characterized in that The vibration absorber further comprises: a piston rod, at least partly movably disposed in the housing; Wherein, the flow regulating device is connected between the piston rod and the piston valve.

27. A vehicle, characterized in that: A vibration absorber comprising any one of claims 25 to 26.

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