Built-in damping regulating valve, shock absorber and vehicle

Abstract

The utility model provides a built-in damping regulating valve, shock absorber and vehicle, the built-in damping regulating valve includes: piston subassembly, main spool subassembly and pilot control subassembly, main spool subassembly includes main spool body, one-way piece and connecting piece, one-way piece includes first one-way piece and second one-way piece, connecting piece passes through main spool body, the one-way piece passes through the first one-way piece and the second one-way piece, the connecting piece passes through the first one-way piece and the second one-way piece. The connecting piece is used for fixing the two one-way pieces to the main valve element body, the first one-way piece is used for blocking the recovery backflow hole and enabling damping oil to flow from the piston cavity to the main valve throttling hole in a one-way mode, and the second one-way piece is used for blocking the recovery inlet hole and the compression inlet hole and enabling damping oil to flow from the piston cavity to the main valve throttling hole in a one-way mode. And the damping oil liquid unidirectionally circulates from the piston radial hole to the second cavity and unidirectionally circulates from the main valve throttling hole to the second cavity, and the pilot control assembly is connected with the piston body and used for controlling the opening degree of the main valve element body. The connecting piece of the built-in damping regulating valve is high in connecting strength, not prone to loosening and high in overall stability.

Description

Technical Field

[0001] The utility model relates to the technical field of damping regulating valves, and particularly to an in - built damping regulating valve, a shock absorber and a vehicle. Background Art

[0002] The damping regulating valve is the core component for the semi - active shock absorber to achieve adjustable damping. During the process of the damping oil passing through the damping regulating valve, the kinetic energy of the vehicle vibration is converted into heat energy of the oil through the friction inside the oil molecules and dissipated to the outside, so that the vehicle body vibration decays rapidly.

[0003] In the related art, during the driving process of the vehicle, vibrations will be generated due to uneven roads and various driving states, resulting in the loosening of connecting parts such as screws for fixing inside the damping regulating valve. As a result, the damping force generated by the damping regulating valve becomes unstable. In severe cases, the damping force may decrease, leading to a decline in the performance of the suspension system, and thus the vehicle's ability to effectively absorb and buffer the impact from the road surface is affected, and the vehicle's controllability and stability are also affected. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems in the related art to some extent.

[0005] Therefore, an embodiment of the utility model provides an in - built damping regulating valve, a shock absorber and a vehicle. The connecting strength of the connecting parts of the in - built damping regulating valve is high, not easy to loosen, and the overall stability is high.

[0006] The in - built damping regulating valve according to the embodiment of the utility model includes:

[0007] A piston assembly, the piston assembly includes a piston body, the piston body has a piston chamber and a main valve throttle hole arranged in sequence along the circumferential direction of the piston body, and piston radial holes are formed in the side wall of the piston chamber;

[0008] A main valve core assembly, the main valve core assembly is arranged in the chamber of the piston body, a second chamber is defined between the main valve core assembly and the piston body, the main valve core assembly includes a main valve core body, one end of the main valve core body abuts against the inner wall of the main valve throttle hole and can move axially along the piston body to adjust the opening degree between the main valve core body and the main valve throttle hole;

[0009] The main valve core body has a rebound return hole, a compression return hole, a rebound inlet hole and a compression inlet hole. The rebound return hole is used to conduct the main valve throttle hole and the piston chamber, the compression return hole is used to conduct the piston radial hole and the piston chamber, the rebound inlet hole is used to conduct the piston radial hole and the second chamber, and the compression inlet hole is used to conduct the main valve throttle hole and the second chamber.

[0010] The main spool assembly further includes a check piece and a connecting member. The check piece includes a first check piece and a second check piece.

[0011] The connecting member penetrates through the main spool body, and the connecting member is used to fix the first check piece and the second check piece on the main spool body.

[0012] The first check piece is used to block the restoration return hole and enable the damping oil to flow unidirectionally from the piston chamber to the main valve throttle hole.

[0013] The second check piece is used to block the restoration inlet hole and the compression inlet hole, and enable the damping oil to flow unidirectionally from the piston radial hole to the second chamber and enable the damping oil to flow unidirectionally from the main valve throttle hole to the second chamber.

[0014] A pilot control assembly, the pilot control assembly is connected to the piston body, and at least part of the pilot control assembly abuts against the main spool assembly. The pilot control assembly is used to control the opening degree of the main spool body.

[0015] The built-in damping regulating valve according to the embodiment of the present invention can use the connecting member penetrating through the main spool body to fix the first check piece and the second check piece on the main spool body, so that the integrity between the main spool body and the connecting member is higher, ensuring the connection strength between the main spool body and the connecting member, and reducing the possibility of loosening of the connecting member during the vibration of the damping regulating valve. Therefore, the overall stability of the built-in damping regulating valve according to the embodiment of the present invention is higher.

[0016] In some embodiments, the connecting member includes a connection body, a first connection portion and a second connection portion. The first connection portion and the second connection portion are oppositely arranged in the length direction of the connection body. The main spool body has a connection hole axially opened along the main spool body. The connection body is placed in the connection hole. The first connection portion and the second connection portion are respectively used to press the first check piece and the second check piece on the side wall of the main spool body.

[0017] In some embodiments, the connecting member is connected to the main spool body by riveting.

[0018] In some embodiments, the check piece is annular, and a notch is provided on the check piece.

[0019] In some embodiments, there are multiple notches on the check piece, and the multiple notches are arranged at intervals along the axial direction of the check piece.

[0020] In some embodiments, the one-way sheet includes a first section, a fixing section, and a second section connected in sequence. The fixing section is used to connect to the connecting member. The first section and / or the second section of the first one-way sheet are used to block the restoration return hole. The first section and the second section of the second one-way sheet are respectively used to block the restoration inlet hole and the compression inlet hole.

[0021] In some embodiments, the profile of the one-way sheet in its extending direction is S-shaped.

[0022] In some embodiments, the fixing section includes a first extension part, a fixing part, and a second extension part connected in sequence. The first extension part is connected to the first section, the second extension part is connected to the second section, and the fixing part is annular.

[0023] The shock absorber according to an embodiment of the present invention includes:

[0024] The shock absorber includes a housing and a damping regulating valve. The housing and the damping regulating valve define a compression chamber and a restoration chamber. The compression chamber is communicated with the main valve throttle hole, the restoration chamber is communicated with the piston radial hole, and the damping regulating valve is the built-in damping regulating valve as described in any one of the above embodiments.

[0025] The vehicle according to an embodiment of the present invention includes the shock absorber as described in the above embodiment. Description of the Drawings

[0026] Figure 1 is the first sectional view schematic diagram of the built-in damping regulating valve according to an embodiment of the present invention.

[0027] Figure 2 is Figure 1 the enlarged schematic diagram of A shown in

[0028] Figure 3 is the second sectional view schematic diagram of the built-in damping regulating valve according to an embodiment of the present invention.

[0029] Figure 4 is the first sectional view schematic diagram of the main spool body of the built-in damping regulating valve according to an embodiment of the present invention.

[0030] Figure 5 is the second sectional view schematic diagram of the main spool body of the built-in damping regulating valve according to an embodiment of the present invention.

[0031] Figure 6 is the first sectional view schematic diagram of the built-in damping regulating valve during the compression process according to an embodiment of the present invention.

[0032] Figure 7It is the second sectional view schematic diagram of the built-in damping regulating valve in the compression process of the embodiment of the present utility model.

[0033] Figure 8 It is the first sectional view schematic diagram of the built-in damping regulating valve in the restoration process of the embodiment of the present utility model.

[0034] Figure 9 It is the second sectional view schematic diagram of the built-in damping regulating valve in the restoration process of the embodiment of the present utility model.

[0035] Figure 10 It is the structural schematic diagram of the check valve piece of the built-in damping regulating valve of the embodiment of the present utility model.

[0036] Figure 11 It is the structural schematic diagram of the check valve piece of the built-in damping regulating valve of another embodiment of the present utility model.

[0037] Reference numerals:

[0038] 100, the first chamber, 200, the second chamber, 300, the third chamber, 400, the fourth chamber,

[0039] 1, piston assembly, 11, piston body, 111, piston chamber, 112, piston flange, 113, main valve throttle hole, 114, piston radial hole, 115, piston axial hole, 116, main valve throttle port,

[0040] 2, main spool valve assembly,

[0041] 21, main spool valve body, 211, the first flange, 212, the second flange, 213, compression return hole, 214, constant through throttle hole, 215, pilot constant through hole, 216, compression inlet hole, 217, restoration return hole, 218, restoration inlet hole,

[0042] 22, spring seat, 221, pilot throttle hole,

[0043] 23, clamp, 24, saddle spring, 25, the first spring, 26, the second spring,

[0044] 27, connecting piece, 271, connecting body, 272, the first connecting portion, 273, the second connecting portion,

[0045] 201, the first check valve piece, 202, the second check valve piece, 203, annular check valve piece, 204, notch,

[0046] 20a, the first section, 20b, fixed section, 20b1, the first extension portion, 20b2, fixed portion, 20b3, the second extension portion, 20c, the second section,

[0047] 3. Pilot control assembly, 31. Pilot control part, 32. Pilot valve spool rod, 33. Pilot valve spool

[0048] 301. Pilot return flow path Detailed implementation mode

[0049] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0050] As Figures 1 - 11 shown, the built-in damping regulating valve of the embodiment of the present invention includes: a piston assembly 1, a main valve spool assembly 2 and a pilot control assembly 3.

[0051] As Figures 1 - 3 shown, the piston assembly 1 includes a piston body 11. The piston body 11 has a piston chamber 111 and a main valve throttle hole 113 arranged in sequence along the circumferential direction of the piston body 11. A piston radial hole 114 is formed in the side wall of the piston chamber 111. The inner wall surface of the piston body 11 also has a piston flange 112, and a piston axial hole 115 is formed in the piston flange 112.

[0052] The main valve spool assembly 2 is arranged in the chamber of the piston body 11. A second chamber 200 is defined between the main valve spool assembly 2 and the piston body 11. The main valve spool assembly 2 includes a main valve spool body 21. One end of the main valve spool body 21 abuts against the inner wall of the main valve throttle hole 113 and is axially movable along the piston body 11 to adjust the opening between the main valve spool body 21 and the main valve throttle hole 113. The main valve spool body 21 has a restoration return hole 217, a compression return hole 213, a restoration inlet hole 218 and a compression inlet hole 216. The restoration return hole 217 is used to conduct the main valve throttle hole 113 and the piston chamber 111. The compression return hole 213 is used to conduct the piston chamber 111 and the piston radial hole 114. The restoration inlet hole 218 is used to conduct the piston radial hole 114 and the second chamber 200. The compression inlet hole 216 is used to conduct the main valve throttle hole 113 and the second chamber 200. The main valve spool assembly 2 also includes a check valve piece and a connecting piece 27. The check valve piece includes a first check valve piece 201 and a second check valve piece 202. The connecting piece 27 penetrates through the main valve spool body 21, and the connecting piece 27 is used to fix the check valve piece on the main valve spool body 21. The first check valve piece 201 is used to block the restoration return hole 217 and make the damping oil flow unidirectionally from the piston chamber 111 to the main valve throttle hole 113. The second check valve piece 202 is used to block the restoration inlet hole 218 and the compression inlet hole 216, and make the damping oil flow unidirectionally from the piston radial hole 114 to the second chamber 200 and make the damping oil flow unidirectionally from the main valve throttle hole 113 to the second chamber 200.

[0053] AsFigures 1 - 5 As shown, the main spool body 21 further has a first flange 211 and a second flange 212. The first flange 211 abuts against the inner wall of the piston body 11, and a compression return hole 213 is provided on the first flange 211. The second flange 212 abuts against the piston flange 112.

[0054] The main spool assembly 2 further includes a spring seat 22. The main spool body 21 and the spring seat 22 sequentially define a first chamber 100, a second chamber 200, and a third chamber 300 with the piston body 11 in the length direction of the built-in damping regulating valve. A normally open throttle hole 214 is provided on the side wall of the first chamber 100, and a pilot normally open hole 215 is provided on the side wall of the second chamber 200. A pilot throttle hole 221 is provided on the spring seat 22, and the pilot throttle hole 221 communicates the second chamber 200 and the third chamber 300.

[0055] A clamp 23 is sleeved on the outer peripheral wall of the first chamber 100. A saddle spring 24 is sleeved between the clamp 23 and the compression return hole 213. An annular check valve 203 is provided adjacent to the saddle spring 24 in the compression return hole 213. Thus, the annular check valve 203 can be used to block the compression return hole 213 by the saddle spring 24, and the damping oil can flow unidirectionally from the piston chamber 111 to the piston radial hole 114. As Figure 1 and Figure 3 shown, a first spring 25 is connected between the main spool body 21 and the spring seat 22. The left end of the main spool body 21 abuts against the right end of the main valve throttle hole 113 under the elastic action of the first spring 25. The left end of the main spool body 21 and the right end of the main valve throttle hole 113 define a main valve throttle port 116. The main spool body 21 can move in the left-right direction to control the opening degree of the main valve throttle port 116 so that the damping oil can flow out through the main valve throttle port 116 and the piston radial hole 114 in sequence.

[0056] As Figures 1 - 5 shown, the pilot control assembly 3 is connected to the piston body 11, and at least part of the pilot control assembly 3 abuts against the main spool assembly 2. The pilot control assembly 3 is used to control the opening degree of the main spool body 21. The pilot control assembly 3 includes a pilot control member 31, a pilot spool rod 32, and a pilot spool 33. A second spring 26 is connected between the pilot spool 33 and the spring seat 22. The pilot spool 33 abuts against the pilot valve rod under the elastic action of the second spring 26.

[0057] As Figures 1 - 5As shown, a pilot return flow channel 301 is defined between the spring seat 22, the piston body 11 and the pilot control member 31, and an oil flow channel is provided on the pilot valve core 33. When the pilot control assembly 3 is in the initial state, the pilot valve core 33 is used to block the second chamber 200 and the pilot return flow channel; when the pilot control assembly 3 is in the driving state, the pilot valve core rod 32 moves to the left, so that the pilot valve core 33 overcomes the resistance and moves to the left, thereby connecting the third chamber 300 and the pilot return flow channel through the oil flow channel.

[0058] It is understandable that if Figures 1 - 9 As shown, the built-in damping regulating valve of the embodiment of the utility model has a compression process and a recovery process, and the outer side of the piston radial hole 114 is the fourth chamber 400 .

[0059] During the compression process, the first chamber 100 is in a high pressure state. Figure 6 As shown, when the flow rate of the built-in damping regulating valve is small, the hydraulic pressure acting on the main valve core body 21 on one side of the first chamber 100 is small, and is not enough to overcome the sum of the pre-compression force of the first spring 25 and the hydraulic pressure in the second chamber 200, so that the main valve throttle port 116 is not opened. At this time, a part of the damping oil flows along the path q1, that is, the damping oil in the first chamber 100 flows to the fourth chamber 400 through the constant-pass throttle hole 214 and the piston radial hole 114. Another part of the damping oil flows along the path q3, that is, the damping oil in the first chamber 100 flows to the fourth chamber 400 through the compression inlet hole 216, the second chamber 200, the pilot constant-pass hole 215, the compression return hole 213 and the piston radial hole 114. At this time, the flow rate through the damping regulating valve is the sum of the flow rates through the constant-pass throttle hole 214 and the compression return hole 213, and the flow-pressure curve is a quadratic function curve. The damping oil needs to overcome the resistance of the second one-way plate 202 and the annular one-way plate. Figure 6 and Figure 7 As shown in FIG. 1 , when the flow rate of the built-in damping regulating valve gradually increases, and the hydraulic pressure acting on the main valve core body 21 from the first chamber 100 is greater than the sum of the pre-compression force of the first spring 25 and the hydraulic pressure in the second chamber 200, the main valve core body 21 moves to the right, and the main valve throttle port 116 opens. Then, if Figure 6 As shown, when the pilot control assembly 3 is in the initial state, the damping oil entering the second chamber 200 flows along the path q4, that is, the damping oil in the second chamber 200 flows to the third chamber 300 through the pilot throttle hole 221. Figure 7As shown, when the pilot control assembly 3 is in the driving state, the pilot spool 33 moves to the left, and the damping hydraulic fluid in the third chamber 300 flows along path q5. That is, the damping hydraulic fluid in the third chamber 300 flows through the hydraulic fluid passage, the pilot return passage 301, the piston axial hole 115, the compression return hole 213, and the piston radial hole 114 to the fourth chamber 400 in sequence. Among them, the damping hydraulic fluid needs to overcome the resistance of the annular single-way piece.

[0060] That is to say, as Figure 7 shown, after the pilot control assembly 3 is opened (i.e., in the driving state), the pressure in the second chamber 200 will decrease, and the hydraulic pressure acting on the rear end (i.e., the right end) of the main spool body 21 will decrease, making it easier for the main valve throttle orifice 116 to open. After the main valve throttle orifice 116 is opened, a large amount of damping hydraulic fluid in the first chamber 100 will flow along path q2 (i.e., through the main valve throttle orifice 116 and the piston radial hole 114) to the fourth chamber 400. Thus, the internal damping regulating valve of the embodiment of the present utility model controls the opening and closing of the pilot spool 33 by controlling the displacement of the pilot spool rod 32 to adjust the pressure in the second chamber 200, thereby controlling the displacement of the main spool (i.e., adjusting the opening of the main valve throttle orifice 116), and further realizing the regulation of the pressure difference - flow characteristic of the damping regulating valve during the compression process.

[0061] During the recovery process, the fourth chamber 400 is in a high-pressure state. As Figure 8 shown, when the flow rate of the built-in damping regulating valve is small, the hydraulic pressure acting on the main spool body 21 on one side of the fourth chamber 400 is small and is not sufficient to overcome the sum of the pre-compression force of the first spring 25 and the hydraulic pressure in the second chamber 200, so that the main valve throttle orifice 116 is not opened. At this time, a part of the damping hydraulic fluid flows to the first chamber 100 through path Q1, that is, the damping hydraulic fluid in the fourth chamber 400 flows through the piston radial hole 114 and the always-open throttle hole 214 to the first chamber 100 in sequence. Another part of the damping hydraulic fluid flows to the first chamber 100 through path Q3, that is, the damping hydraulic fluid in the fourth chamber 400 flows through the piston radial hole 114, the recovery inlet hole 218, the pilot always-open hole 215, and the recovery return hole 217 to the first chamber 100 in sequence. Among them, the damping hydraulic fluid needs to overcome the resistance of the annular one-way piece 203. At this time, the flow rate through the damping regulating valve is the sum of the flow rates through the always-open throttle hole 214 and the recovery return hole 217, and the flow rate - pressure curve is in the form of a quadratic function curve.

[0062] During the recovery process, as Figure 8 and Figure 9 shown, when the flow rate of the built-in damping regulating valve gradually increases and the hydraulic pressure acting on the main spool body 21 on one side of the fourth chamber 400 is greater than the sum of the pre-compression force of the first spring 25 and the hydraulic pressure in the second chamber 200, the main spool moves to the right and the main valve throttle orifice 116 is opened. Then, as Figure 8As shown, when the pilot control assembly 3 is in the initial state, the damping hydraulic fluid in the second chamber 200 flows along path Q4 into the third chamber 300, that is, the damping hydraulic fluid in the second chamber 200 flows through the pilot throttle orifice 221 into the third chamber 300. As Figure 9 shown, when the pilot control assembly 3 is in the driving state, the pilot spool 33 moves leftward, and the damping hydraulic fluid in the second chamber 200 flows along path Q5 into the first chamber 100, that is, the damping hydraulic fluid in the second chamber 200 sequentially flows through the hydraulic fluid passage, the pilot return passage 301, the piston axial hole 115, and the restoration return hole 217 into the first chamber 100, where the damping hydraulic fluid needs to overcome the resistance of the second check piece 202 and the first check piece 201.

[0063] That is to say, as Figure 9 shown, after the pilot control assembly 3 is opened (i.e., in the driving state), the pressure in the second chamber 200 will decrease, the hydraulic pressure received by the rear end (i.e., the right end) of the main spool body 21 will decrease, and the main valve throttle orifice 116 is more likely to open. After the main valve throttle orifice 116 opens, a large amount of damping hydraulic fluid in the fourth chamber 400 will flow along path Q2 (i.e., through the piston radial hole 114 and the main valve throttle orifice 116) into the first chamber 100.

[0064] In some embodiments, the connecting member 27 includes a connecting body 271, a first connecting portion 272, and a second connecting portion 273. The first connecting portion 272 and the second connecting portion 273 are oppositely arranged in the length direction of the connecting body 271. The main spool body 21 has a connecting hole axially opened along the main spool body 21. The connecting body 271 is placed in the connecting hole, and the first connecting portion 272 and the second connecting portion 273 are respectively used to press the first check piece 201 and the second check piece 202 against the side wall of the main spool body 21.

[0065] Specifically, as Figures 1 - 5 shown, the first connecting portion 272 and the second connecting portion 273 are respectively connected to both ends of the connecting body 271. The first connecting portion 272 and the second connecting portion 273 can be connected to the connecting body 271 by bonding or welding, so that the integrity of the connecting member 27 is stronger, and the problem of loosening caused by vibration during the use of the connecting member 27 due to the use of threaded connection is avoided.

[0066] It can be understood that the connecting body 271, the first connecting portion 272, and the second connecting portion 273 can also be connected in an integrally formed manner, that is, preferably, the connecting member 27 and the main spool body 21 are connected by riveting. In addition, the connecting member 27 can also be a shrink fit sleeve to overcome the problem of loosening caused by vibration during the use of the connecting member 27.

[0067] Optionally, the one-way sheet is annular, and a notch 204 is formed in the one-way sheet. It can be understood that, as shown in FIGS. Figure 5 Figure 6 10 and 11, when a notch 204 is provided on the one-way sheet, the elastic modulus of the one-way sheet is lower than that of the annular one-way sheet as a whole structure, so that the one-way sheet is easier to open, the opening pressure is lower, and further the resistance effect of the one-way sheet on the fluid is reduced.

[0068] Preferably, there are a plurality of notches 204 on the one-way sheet, and the plurality of notches 204 are arranged at intervals along the axial direction of the one-way sheet. It can be understood that according to different use environments, the one-way sheet can adopt different numbers of notches 204 to ensure the overall structural strength while ensuring the elastic modulus of the elastic sheet itself.

[0069] In some other embodiments, as shown in FIGS. Figure 10 12 and 13, the one-way sheet includes a first section 20a, a fixed section 20b, and a second section 20c that are connected in sequence. The fixed section 20b is used to connect to the connector 27. The first section 20a of the first one-way sheet 201 and / or the second section 20c of the first one-way sheet 201 are used to block the restoration return hole 217. The first section 20a and the second section 20c of the second one-way sheet 202 are respectively used to block the restoration inlet hole 218 and the compression inlet hole 216.

[0070] It can be understood that, as shown in FIGS. Figure 10 14 and 15, the first section 20a, the fixed section 20b, and the second section 20c are connected end to end in sequence. Among them, the first section 20a of the first one-way sheet 201 can be used to block the restoration return hole 217, or the second section 20c of the first one-way sheet 201 can be used to block the restoration return hole 217, or both the first section 20a and the second section 20c of the first one-way sheet 201 are used to block the restoration return hole 217.

[0071] Optionally, the contour of the one-way sheet in its extending direction can be Z-shaped or H-shaped, or other shapes with a certain area for blocking. Preferably, as shown in FIGS. Figure 11 16 and 17, the contour of the one-way sheet in its extending direction is S-shaped.

[0072] In some embodiments, the fixed section 20b includes a first extension portion 20b1, a fixing portion 20b2, and a second extension portion 20b3 that are connected in sequence. The first extension portion 20b1 is connected to the first section 20a, the second extension portion 20b3 is connected to the second section 20c, and the fixing portion 20b2 is annular.

[0073] As shown in FIGS. Figure 10 18 and 11As shown, the fixing part 20b2 is annular and the fixing part 20b2 is used to be sleeved on the connecting body 271. The fixing part 20b2 being annular also facilitates the fixing of the first connecting part 272 and the second connecting part 273, so as to ensure the connection stability of the connecting piece 27.

[0074] Thus, the internal damping regulating valve of the embodiment of the present utility model can fix the first one-way piece 201 and the second one-way piece 202 on the main valve core body 21 by means of the connecting piece 27 penetrating through the main valve core body 21, making the integrity between the main valve core body 21 and the connecting piece 27 higher, ensuring the connection strength between the main valve core body 21 and the connecting piece 27, and reducing the possibility of the connecting piece 27 becoming loose during the vibration of the damping regulating valve. Therefore, the overall stability of the built-in damping regulating valve of the embodiment of the present utility model is higher.

[0075] The shock absorber of the embodiment of the present utility model includes a housing and a damping regulating valve. The housing and the damping regulating valve define a compression chamber and a recovery chamber. The compression chamber is communicated with the main valve throttle hole 113, and the recovery chamber is communicated with the piston radial hole 114. The damping regulating valve is the built-in damping regulating valve in any one of the above embodiments. Optionally, the shock absorber is a semi-active electronic shock absorber.

[0076] The vehicle of the embodiment of the present utility model includes the shock absorber as in the above embodiment.

[0077] It can be understood that the damping regulating valve used in the vehicle of the embodiment of the present utility model is an inverse proportional damping regulating valve, that is, when the coil current increases, the displacement of the pilot valve core 33 increases, the opening of the pilot valve core 33 increases, the valve port pressure difference of the main valve core assembly 2 becomes smaller, the damping decreases, and it has a failure protection function. Therefore, the semi-active electronic shock absorber applying the built-in damping regulating valve can also better serve the vehicle, ensuring operation stability and taking into account riding comfort through reliable damping regulation.

[0078] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 construed as a limitation to the present utility model.

[0079] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0080] In the present utility model, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0081] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0082] In the present utility model, terms such as "an embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0083] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. An internal damping regulating valve, characterized in that, Comprising: A piston assembly, the piston assembly includes a piston body, the piston body has a piston chamber and a main valve throttle hole arranged in sequence along the circumferential direction of the piston body, and a piston radial hole is provided on the side wall of the piston chamber; A main valve core assembly, the main valve core assembly is arranged in the chamber of the piston body, a second chamber is defined between the main valve core assembly and the piston body, the main valve core assembly includes a main valve core body, one end of the main valve core body abuts against the inner wall of the main valve throttle hole and is axially movable along the piston body to adjust the opening degree between the main valve core body and the main valve throttle hole; The main valve core body has a restoration return hole, a compression return hole, a restoration inlet hole and a compression inlet hole, the restoration return hole is used to conduct the main valve throttle hole and the piston chamber, the compression return hole is used to conduct the piston radial hole and the piston chamber, the restoration inlet hole is used to conduct the piston radial hole and the second chamber, and the compression inlet hole is used to conduct the main valve throttle hole and the second chamber; The main valve core assembly further includes a check valve piece and a connecting piece, the check valve piece includes a first check valve piece and a second check valve piece; The connecting piece penetrates through the main valve core body, and the connecting piece is used to fix the first check valve piece and the second check valve piece on the main valve core body; The first check valve piece is used to block the restoration return hole and allow the damping oil to flow unidirectionally from the piston chamber to the main valve throttle hole; The second check valve piece is used to block the restoration inlet hole and the compression inlet hole, and allow the damping oil to flow unidirectionally from the piston radial hole to the second chamber and allow the damping oil to flow unidirectionally from the main valve throttle hole to the second chamber; A pilot control assembly, the pilot control assembly is connected to the piston body, and at least part of the pilot control assembly abuts against the main valve core assembly, and the pilot control assembly is used to control the opening degree of the main valve core body.

2. The built-in damping regulating valve according to claim 1, characterized in that, The connecting piece includes a connecting body, a first connecting portion and a second connecting portion, the first connecting portion and the second connecting portion are arranged oppositely in the length direction of the connecting body, the main valve core body has a connecting hole axially opened along the main valve core body, the connecting body is placed in the connecting hole, and the first connecting portion and the second connecting portion are respectively used to press and cover the first check valve piece and the second check valve piece on the side wall of the main valve core body.

3. The built-in damping regulating valve according to claim 2, wherein The connecting piece and the main valve core body are connected by riveting.

4. The built-in damping regulating valve according to claim 1, wherein, The check valve piece is annular, and a notch is provided on the check valve piece.

5. The built-in damping regulating valve according to claim 4, characterized in that, The notches on the check valve piece are all multiple, and the multiple notches are arranged at intervals along the axial direction of the check valve piece.

6. The built-in damping regulating valve according to claim 1, characterized in that, The check valve piece includes a first section, a fixed section and a second section connected in sequence, the fixed section is used to connect with the connecting piece, the first section and / or the second section of the first check valve piece are used to block the restoration return hole, and the first section and the second section of the second check valve piece are respectively used to block the restoration inlet hole and the compression inlet hole.

7. The built-in damping regulating valve according to claim 6, characterized in that, The contour of the check valve piece in its extending direction is S-shaped.

8. The built-in damping regulating valve according to claim 6, characterized in that, The fixed section includes a first extension part, a fixing part, and a second extension part that are connected in sequence. The first extension part is connected to the first section, the second extension part is connected to the second section, and the fixing part is annular.

9. A shock absorber, characterized in that, Comprising: The shock absorber includes a housing and a damping regulating valve. The housing and the damping regulating valve define a compression chamber and a rebound chamber. The compression chamber is communicated with the main valve throttle hole, the rebound chamber is communicated with the piston radial hole, and the damping regulating valve is the built-in damping regulating valve according to any one of claims 1-8.

10. A vehicle, characterized in that, Comprising the shock absorber according to claim 9.

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