Damping adjusting structure, piston assembly, damper and vehicle

Abstract

The utility model relates to a damping adjusting structure, a piston assembly, a damper and a vehicle. The damping adjusting structure comprises a supporting piece and an adjusting piece. The supporting piece is provided with a runner; the adjusting piece is arranged on the supporting piece and is configured to slide under the driving of force, so that at least part of the adjusting piece can extend into or retreat from the flow channel. The adjusting part is driven to move towards the flow channel, and at least part of the adjusting part extends into the flow channel, so that the flow passing area of the flow channel can be reduced, the damping force generated when fluid flows is increased, and the damping value is adjusted. Therefore, the damping force adjusting range of the damper can be enlarged to meet the requirement of the vehicle for more control damping values, so that the operation stability and the riding comfort of the vehicle can be improved.

Description

Technical Field

[0001] The present application relates to the field of electronic technology, and in particular to a damping adjustment structure, a piston assembly, a damper and a vehicle. Background Art

[0002] To improve ride comfort and operational stability, vehicles require dampers. These dampers cushion and absorb ground impacts and suppress changes in vehicle posture, such as tilt, pitch, and nod. Based on their operating principles, dampers can be categorized as magnetorheological, hydraulic, pneumatic, and friction dampers.

[0003] Currently, the damping force adjustment range of these dampers is limited, and the improvement of vehicle ride comfort and vehicle operating stability is limited. Utility Model Content

[0004] The embodiments of the present application provide a damping adjustment structure that can increase the damping force adjustment range of the damper to at least solve the above-mentioned technical problems.

[0005] In order to achieve the above-mentioned purpose, according to the first aspect of the present application, a damping adjustment structure is provided, which includes a support member and an adjustment member; the support member has a flow channel; the adjustment member is arranged on the support member and is configured to slide under the driving force so that at least part of it can extend into or exit the flow channel.

[0006] Optionally, the support member is provided with a first hole, one end of the first hole is communicated with the flow channel, and the adjusting member is slidably provided in the first hole.

[0007] Optionally, the support member includes a frame and a base, the frame is provided with a mounting hole, the flow channel is provided on the frame, and one end of the flow channel extends to the hole wall of the mounting hole; the base is provided in the mounting hole, and the first hole is provided on the base.

[0008] Optionally, the support member further includes a first stopper, which is located on a side of the base away from the bottom of the mounting hole; the first stopper is connected to the skeleton and abuts against the base; and the flow channel runs through the first stopper.

[0009] Optionally, a first flange is provided on an edge of an end surface of the frame close to the first stopper. The first flange is located on a side of the first stopper facing away from the base body, and the first flange overlaps the first stopper.

[0010] Optionally, the damping adjustment structure further includes a first sealing ring, which is sleeved on the adjustment member, and an outer peripheral surface of the first sealing ring abuts against the hole wall of the first hole.

[0011] Optionally, the damping adjustment structure further includes a transmission member, one end of which is connected to the adjustment member, and the transmission member is configured to drive the adjustment member to slide under the action of force so that at least a portion of the adjustment member can extend into or out of the flow channel.

[0012] Optionally, the transmission member includes a cam and an elastic member, the cam is rotatably arranged on the support member and contacts the adjusting member, and the two ends of the elastic member are respectively connected to the support member and the adjusting member; wherein the cam is configured to rotate under the action of force to drive the adjusting member to slide and cause the elastic member to be elastically compressed.

[0013] Optionally, the transmission member further includes a transmission rod, which is connected to the cam, and the transmission rod is configured to rotate under the action of force to drive the cam to rotate.

[0014] Optionally, the cam is provided with a first plug hole, the cross section of the first plug hole is non-circular, and one end of the transmission rod is plugged into the first plug hole.

[0015] Optionally, the support member is provided with a first hole and a second hole connected to each other, the end of the first hole away from the second hole is connected to the flow channel, the adjusting member is slidably set in the first hole, the cam is rotatably set in the second hole, and one end of the transmission rod is inserted into the second hole and connected to the cam.

[0016] Optionally, the transmission member further includes a rotating support seat, which is connected to the support member and rotates with the cam.

[0017] Optionally, the support member is provided with a first hole and a second hole connected to each other, the end of the first hole away from the second hole is connected to the flow channel, the adjusting member is slidably arranged in the first hole, at least a portion of the rotating support seat is arranged in the second hole, the cam is located in the second hole, and rotates with the rotating support seat.

[0018] Optionally, the rotating support seat includes a positioning shaft, a main body and a matching shaft connected in sequence, the positioning shaft is engaged with the support member, the main body is arranged in the second hole, the matching shaft is inserted into the cam, and rotates with the cam.

[0019] Optionally, the elastic member is sleeved on the adjusting member.

[0020] Optionally, the support member is provided with a first hole and a second hole that are connected to each other, the end of the first hole away from the second hole is connected to the flow channel, the adjusting member is slidably arranged in the first hole, and the cam is rotatably arranged in the second hole; wherein, the elastic member is sleeved on the adjusting member, and the two ends of the elastic member are respectively connected to the adjusting member and the inner wall of the first hole.

[0021] Optionally, the first hole includes a first sub-hole and a second sub-hole with successively increasing apertures, and the end of the first sub-hole away from the second sub-hole is connected to the flow channel; the adjusting member includes a connected adjusting body and a block, the adjusting body is slidably arranged in the first sub-hole, and the block is arranged in the second sub-hole, and the end of the adjusting body away from the block can extend into or out of the flow channel; wherein, the cam contacts the block, and the two ends of the elastic member respectively abut the block and the bottom of the second sub-hole.

[0022] Optionally, there are multiple flow channels and multiple adjusting members, and the multiple flow channels and the multiple adjusting members are arranged in a one-to-one correspondence.

[0023] Optionally, the sliding direction of the regulating member is perpendicular to the extending direction of the flow channel.

[0024] According to a second aspect of the present application, a piston assembly is provided, which includes a piston rod and the aforementioned damping adjustment structure; wherein one end of the piston rod is connected to the support member, and the flow channel is extended along the axis of the piston rod.

[0025] Optionally, the piston rod is plugged into the support member.

[0026] Optionally, the piston assembly further includes a second stopper, which is sleeved on the piston rod and connected to the support member; the flow channel runs through the second stopper.

[0027] Optionally, the piston assembly also includes a retaining ring, and the second stopper is provided with a matching through hole. The second stopper is sleeved on the piston rod through the matching through hole. The inner circumference of the retaining ring is clamped with the piston rod, and the outer circumference of the retaining ring is clamped with the hole wall of the matching through hole.

[0028] Optionally, a second flange is provided on an edge of the end surface of the support member close to the second stopper, the second flange is located on a side of the second stopper facing away from the support member, and the second flange overlaps the second stopper.

[0029] Optionally, a fourth hole is provided inside the piston rod, and the fourth hole is configured to cooperate with the transmission member, and the transmission member is configured to drive the adjustment member to slide under the action of force, so that at least part of the adjustment member can extend into or out of the flow channel.

[0030] Optionally, a guide sleeve is sleeved on the outer circumference of the support member.

[0031] According to the third aspect of the present application, a damper is provided, which includes a cylinder assembly and the aforementioned piston assembly; the cylinder assembly has an inner cavity, which is filled with a working fluid; wherein the damping adjustment structure is arranged in the inner cavity and slides with the cavity wall of the inner cavity; the end of the piston rod away from the support member passes through the cylinder assembly.

[0032] Optionally, the working fluid is magnetorheological fluid, and the damper further includes an electromagnetic coil wound on the support.

[0033] Optionally, the electromagnetic coil is arranged in the support member, one end of the power supply line of the electromagnetic coil is connected to the electromagnetic coil, and the other end passes through the support member and the piston rod and is connected to the power source.

[0034] Optionally, the damper also includes a floating piston, which is located on the side of the damping adjustment structure away from the piston rod, and the floating piston slides with the cavity wall of the inner cavity; wherein the inner cavity includes a liquid cavity and an air cavity, the liquid cavity is filled with working fluid, and the air cavity is filled with gas, the floating piston is located between the air cavity and the liquid cavity, and the piston assembly is arranged in the liquid cavity.

[0035] Optionally, the floating piston includes a piston body and an oil scraper ring and / or a piston sealing ring; the piston body is slidably fitted with the cavity wall of the inner cavity; the oil scraper ring is sleeved on the outer circumferential surface of the piston body and partially embedded in the piston body; the piston sealing ring is sleeved on the outer circumferential surface of the piston body and partially embedded in the piston body.

[0036] Optionally, the damper further includes a buffer member, which is arranged on the piston rod and located in the inner cavity.

[0037] Optionally, the buffer member includes a recovery buffer block and a positioning block; the recovery buffer block is arranged on the piston rod; the positioning block is arranged on the piston rod and is located on a side of the recovery buffer block close to the damping adjustment structure.

[0038] Optionally, the damper further comprises a mounting yoke, which is connected to the outer cylinder of the cylinder assembly and is arranged away from the piston rod, and an opening of the mounting yoke is arranged away from the cylinder assembly.

[0039] According to a fourth aspect of the present application, a vehicle is provided, comprising the aforementioned damper.

[0040] In the damping adjustment structure of the embodiment of the present application, by driving the adjustment member toward the flow channel and allowing at least a portion of the adjustment member to extend into the flow channel, the flow area of ​​the flow channel is reduced, thereby increasing the damping force during fluid flow to achieve damping value adjustment. This increases the damping force adjustment range of the damper to meet the vehicle's various control damping value requirements, thereby improving vehicle handling stability and ride comfort.

[0041] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0043] 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 drawing numbers represent the same parts in the following description.

[0044] Figure 1 is a structural schematic diagram of a damping adjustment structure provided in an exemplary embodiment of the present disclosure;

[0045] Figure 2 yes Figure 1 Cross-sectional view of AA;

[0046] Figure 3 is a schematic structural diagram of an exemplary embodiment of the present disclosure in which a regulating portion is located within a flow channel;

[0047] Figure 4 is a top view of a cam provided in an exemplary embodiment of the present disclosure;

[0048] Figure 5 is a schematic structural diagram of a transmission rod provided in an exemplary embodiment of the present disclosure;

[0049] Figure 6 The exemplary embodiment of the present disclosure provides Figure 1 A partial enlarged schematic diagram;

[0050] Figure 7 is a schematic structural diagram of a piston assembly provided in an exemplary embodiment of the present disclosure;

[0051] Figure 8 yes Figure 7 Cross-sectional view of the middle BB;

[0052] Figure 9 is a schematic structural diagram of a damper provided in an exemplary embodiment of the present disclosure;

[0053] Figure 10 is a structural block diagram of a vehicle provided in an exemplary embodiment of the present disclosure.

[0054] Description of reference numerals:

[0055] 1- Damping adjustment structure;

[0056] 11-support member; 111-first hole; 1111-first sub-hole; 1112-second sub-hole; 112-second hole;

[0057] 113-frame; 1131-mounting hole; 1132-first flange; 1133-second insertion hole; 1134-second flange;

[0058] 114-matrix;

[0059] 116-rotating support seat; 1161-positioning shaft; 1162-main body; 1163-matching shaft;

[0060] 117-first stopper;

[0061] 12-flow channel;

[0062] 13-adjusting member; 131-stopper; 132-adjusting body;

[0063] 14-transmission member; 141-cam; 1411-first insertion hole; 1412-driving profile; 142-elastic member; 143-transmission rod; 1431-threading hole; 1432-step groove; 1433-limiting block;

[0064] 15-first sealing ring;

[0065] 2-piston assembly; 21-piston rod; 211-fourth hole; 212-limiting groove; 22-guide sleeve; 23-second stopper; 231-matching through hole; 24-snapping ring;

[0066] 3-Damper;

[0067] 31-cylinder assembly; 311-inner cavity; 3111-air cavity; 3112-liquid cavity; 3113-recovery cavity; 3114-compression cavity;

[0068] 312-outer cylinder; 313-guide; 314-guide sealing ring; 315-guide oil seal; 316-guide scraper ring;

[0069] 32-electromagnetic coil; 321-power supply line;

[0070] 34- floating piston; 341- piston body; 342- oil scraper ring; 343- piston sealing ring;

[0071] 35-buffer; 351-recovery buffer block; 352-positioning block;

[0072] 36-Install the yoke;

[0073] 4-Vehicle. DETAILED DESCRIPTION

[0074] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not 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.

[0075] See also Figures 1 to 3 , Figure 1 is a structural schematic diagram of a damping adjustment structure 1 provided in an exemplary embodiment of the present disclosure, Figure 2 yes Figure 1 The cross-sectional view of AA, Figure 3 Schematic diagram of a structure in which an adjustment portion is located within a flow channel 12, according to an exemplary embodiment of the present disclosure. This embodiment provides a damping adjustment structure 1. The damping adjustment structure 1 includes a support member 11 and an adjustment member 13. The support member 11 defines a flow channel 12. The adjustment member 13 is disposed on the support member 11 and is configured to slide under force, allowing at least a portion of the adjustment member to extend into or out of the flow channel 12.

[0076] It is understood that the adjusting member 13 can slide relative to the support member 11. Specifically, the support member 11 is provided with a slot structure that cooperates with the adjusting member 13, and at least a portion of the adjusting member 13 can be slidably disposed in the slot structure. In this way, the sliding of the adjusting member 13 can be guided by the slot structure.

[0077] It is understood that, depending on the actual application scenario of the damping adjustment structure 1, mechanical power can be selected as the power source for driving the adjustment member 13. For example, a motor can be used as the power source, and the power source can act directly on the adjustment member 13, or the power source can act on the adjustment member 13 through the transmission member 14. Alternatively, direct human power can be selected as the power source for driving the adjustment member 13. For example, a threaded component such as a screw rod or a bolt is threadedly connected to the support member 11, and such a threaded component is connected to the adjustment member 13. Manual rotation of such a threaded component can drive the adjustment member 13 to slide.

[0078] It can be understood that when damping needs to be increased, force is applied to the adjusting member 13 to drive the adjusting member 13 toward the flow channel 12, causing at least a portion of the adjusting member 13 to extend into the flow channel 12, thereby reducing the flow area of ​​the flow channel 12 and increasing the damping force during fluid flow to achieve damping value adjustment. In this way, the adjustable range of the damping value of the damper 3 using the damping adjustment structure 1 can be increased.

[0079] For example, the magnetorheological damper 3 incorporates the damping adjustment structure 1 provided in this embodiment into its original damping adjustment method. In addition to achieving a certain adjustment range of damping force by adjusting the magnetic field, the magnetorheological damper 3 can also adjust the flow area of ​​the flow channel 12 through the damping adjustment structure 1 to increase the damping force adjustment range of the magnetorheological damper 3, thereby providing the magnetorheological damper 3 with a wider damping force bandwidth.

[0080] In this embodiment, by driving the adjusting member 13 toward the flow channel 12 and allowing at least a portion of the adjusting member 13 to extend into the flow channel 12, the flow area of ​​the flow channel 12 is reduced, thereby increasing the damping force during fluid flow, thereby achieving damping value adjustment. This increases the damping force adjustment range of the damper 3 to meet the various control damping value requirements of the vehicle 4, thereby improving the operational stability and ride comfort of the vehicle 4.

[0081] Moreover, in this embodiment, the damping value is adjusted by adjusting the flow area of ​​the flow channel 12 through the sliding adjustment member 13. The original wall surface of the flow channel 12 is not changed, and only the flow area of ​​the flow channel 12 is partially changed, so that the damping adjustment structure 1 can fine-tune the damping value change, so that the damping adjustment accuracy of the damping adjustment structure 1 is higher.

[0082] See also Figure 1 In some embodiments, the support member 11 is provided with a first hole 111 . One end of the first hole 111 is communicated with the flow channel 12 . The adjustment member 13 is slidably provided in the first hole 111 .

[0083] It can be understood that the adjusting member 13 and the first hole 111 have a transition fit or a clearance fit.

[0084] Optionally, the adjusting member 13 is clearance-fitted with the first hole 111 .

[0085] In this embodiment, through the above-mentioned arrangement, on the one hand, the matching structure between the support member 11 and the adjusting member 13 can be made simple and easy to manufacture, thereby improving manufacturing efficiency and improving maintenance convenience; on the other hand, the adjusting member 13 can be arranged inside the support member 11 to facilitate improving the flatness of the outer surface of the support member 11, thereby facilitating the matching of the outer surface of the support member 11 with other components of the damper 3.

[0086] See also Figure 1 or Figure 2 or Figure 3 In some embodiments, the support member 11 includes a frame 113 and a base 114. The frame 113 is provided with a mounting hole 1131. The flow channel 12 is provided on the frame 113. One end of the flow channel 12 extends to the wall of the mounting hole 1131. The base 114 is provided in the mounting hole 1131. The first hole 111 is provided on the base 114.

[0087] It can be understood that the portion of the flow channel 12 located between the skeleton 113 and the base 114 is defined by a portion of the surface of the skeleton 113 and a portion of the surface of the base 114 .

[0088] Specifically, along the extending direction of the flow channel 12 , the mounting hole 1131 is provided at one end of the skeleton 113 .

[0089] In this embodiment, the above arrangement allows the support member 11 to be assembled from the separately processed skeleton 113 and base 114. This reduces the difficulty of forming the support member 11 and improves the efficiency of forming the support member 11.

[0090] See also Figure 1 In some embodiments, the support member 11 further includes a first stopper 117. The first stopper 117 is located on a side of the base 114 away from the bottom of the mounting hole 1131. The first stopper 117 is connected to the frame 113 and abuts against the base 114. The flow channel 12 passes through the first stopper 117.

[0091] It can be understood that the first stopper 117 can be glued, injection-molded, clamped, or screwed to the skeleton 113.

[0092] In this embodiment, through the above arrangement, the base 114 can be fixed in the mounting hole 1131 at the end surface of the frame 113 through the first stopper 117, thereby improving the operability and stability of fixing the base 114 relative to the frame 113.

[0093] See also Figure 1 In some embodiments, a first flange 1132 is provided on an edge of the end surface of the frame 113 close to the first stopper 117. The first flange 1132 is located on a side of the first stopper 117 facing away from the base 114. The first flange 1132 overlaps the first stopper 117.

[0094] Exemplarily, the first flange 1132 is formed by injection molding. Specifically, the base 114 and the first stopper 117 are placed in a mold cavity of the molded skeleton 113, and then injection molding is performed into the mold cavity. After the injection molding material solidifies, the skeleton 113 and the first flange 1132 overlapping the first stopper 117 are formed.

[0095] In this embodiment, the first stopper 117 is fixed by the first flange 1132 , which can improve the position stability of the first stopper 117 relative to the frame 113 , thereby improving the structural reliability of the support member 11 .

[0096] See also Figure 1 or Figure 2 or Figure 3 In some embodiments, the damping adjustment structure 1 further includes a first sealing ring 15 . The first sealing ring 15 is sleeved on the adjustment member 13 . The outer peripheral surface of the first sealing ring 15 abuts against the hole wall of the first hole 111 .

[0097] It can be understood that the inner circumference of the first sealing ring 15 is in sealing cooperation with the adjusting member 13 , and the outer circumference of the first sealing ring 15 is in sealing cooperation with the hole wall of the first hole 111 .

[0098] In this embodiment, by providing a sealing ring, the fluid in the flow channel 12 can be effectively prevented from entering the first hole 111 , thereby improving the sliding smoothness of the adjusting member 13 .

[0099] In addition, when the damping adjustment structure 1 is applied to the damper 3 and the driving member that drives the adjustment member 13 to slide is installed inside the piston rod 21 of the damper 3, the sealing ring can also prevent the fluid in the flow channel 12 from leaking through the hole body inside the piston rod 21 that cooperates with the driving member, thereby ensuring the sealing of the damper 3.

[0100] See also Figure 1 In some embodiments, the damping adjustment structure 1 further includes a transmission member 14. One end of the transmission member 14 is connected to the adjustment member 13. The transmission member 14 is configured to drive the adjustment member 13 to slide under the action of a force, so that at least a portion of the adjustment member 13 can extend into or out of the flow channel 12.

[0101] It can be understood that the transmission member 14 can be a connecting rod mechanism or a crank slider mechanism, or a gear rack assembly, or a cam 141 mechanism, etc.

[0102] It is understandable that the transmission member 14 can be manually operated to cause the transmission member 14 to drive the adjusting member 13 to slide, or the transmission member 14 can be driven by a power source such as a motor to cause the transmission member 14 to drive the adjusting member 13 to slide.

[0103] In this embodiment, by setting the transmission member 14, the distance between the force driving the adjusting member 13 to slide and the adjusting member 13 can be increased, and a larger layout space can be provided for the power source that generates the force driving the adjusting member 13 to slide, thereby reducing the difficulty of arranging the power source, or a larger operating space can be provided for manually driving the transmission member 14, thereby reducing the difficulty of manually driving the adjusting member 13 to slide.

[0104] In addition, when the damping adjustment structure 1 is applied to the damper 3, the power source that generates the force to drive the adjustment member 13 to slide can be arranged outside the damper 3 through the transmission member 14, so as to ensure the compactness of the internal structure of the damper 3 and reduce the difficulty of arranging the internal structure of the damper 3.

[0105] See also Figure 1 In some embodiments, the transmission member 14 includes a cam 141 and an elastic member 142. The cam 141 is rotatably mounted on the support member 11 and contacts the adjustment member 13. The ends of the elastic member 142 are connected to the support member 11 and the adjustment member 13, respectively. The cam 141 is configured to rotate under the action of a force, thereby driving the adjustment member 13 to slide and causing the elastic member 142 to elastically compress.

[0106] It can be understood that the driving profile 1412 of the cam 141 contacts the adjusting member 13 , and the cam 141 rotates to drive the adjusting member 13 to slide via the driving profile 1412 .

[0107] Optionally, the elastic member 142 is a spring. Specifically, the elastic member 142 is a helical compression spring.

[0108] It can be understood that when damping needs to be increased, force is applied to cam 141, causing it to rotate. As cam 141 rotates, the smaller diameter portion of the driving profile 1412 of cam 141 contacts the adjusting member 13, which then contacts the larger diameter portion of the driving profile 1412 of cam 141. Consequently, the rotation of cam 141 causes the adjusting member 13 to slide toward the flow channel 12, allowing at least a portion of the adjusting member 13 to extend into the flow channel 12. This reduces the flow area of ​​the flow channel 12, thereby increasing the damping force during fluid flow and adjusting the damping value. At this point, the elastic member 142 is in an elastically compressed state.

[0109] Correspondingly, when damping needs to be reduced, force is applied to cam 141, causing it to rotate. As cam 141 rotates, the larger diameter portion of the driving profile 1412 of cam 141 contacts the adjusting member 13, before the smaller diameter portion of the driving profile 1412 of cam 141 contacts the adjusting member 13. Simultaneously, the restoring force of elastic member 142 pushes the adjusting member 13 back to its original position, allowing at least a portion of the adjusting member 13 to exit the flow channel 12.

[0110] In this embodiment, by adopting the combination of the cam 141 and the elastic member 142 as the driving member of the adjusting member 13, on the one hand, the space occupied by the controller can be controlled, so that it can be applied in more occasions, especially in the damper 3 with strict space requirements.

[0111] Furthermore, during its rotation, the cam 141 converts the rotational power of the power source into linear sliding power for the adjusting member 13, thereby simplifying the layout of the drive components. The elastic member 142 not only drives the adjusting member 13 to reset, but also acts as a buffer and vibration reducer during its reciprocating movement, thereby improving the smooth operation and reliability of the damping adjustment structure 1.

[0112] In addition, the transmission chain of this drive element is simple, which is conducive to precise control.

[0113] See also Figure 1 In some embodiments, the transmission member further includes a transmission rod 143. The transmission rod 143 is connected to the cam 141. The transmission rod 143 is configured to rotate under the action of a force to drive the cam 141 to rotate.

[0114] It can be understood that the transmission rod 143 can be glued, plugged, welded, riveted or screwed to the cam 141.

[0115] In this embodiment, by setting up a transfer rod, on the one hand, it can be beneficial to achieve the purpose of increasing the force driving the adjustment member 13 to slide and the distance between the adjustment member 13, thereby reducing the difficulty of arranging the power source, or reducing the difficulty of manually driving the adjustment member 13 to slide; on the other hand, it can make the overall structure of the transmission member 14 simple and easy to assemble and maintain.

[0116] See also Figure 1 or Figure 4 , Figure 4 FIG1 is a top view of a cam 141 provided in an exemplary embodiment of the present disclosure. In some embodiments, a first insertion hole 1411 is provided on the cam 141. The cross section of the first insertion hole 1411 is non-circular. One end of the transmission rod 143 is plugged into the first insertion hole 1411.

[0117] It can be understood that the cross-section of the first insertion hole 1411 can be polygonal, elliptical, oval, etc.

[0118] In this embodiment, through the above-mentioned arrangement, the cam 141 can be driven to rotate by the transmission rod 143 to improve the reliability of the transmission therebetween, and the connection structure between the transmission rod 143 and the cam 141 can be simplified to reduce manufacturing costs and improve assembly efficiency.

[0119] It will be appreciated that when the damping adjustment structure 1 is applied to a magnetorheological damper 3, the magnetorheological damper 3 includes an electromagnetic coil 32 and a power supply line 321 for supplying power to the electromagnetic coil 32. In the related art, the power supply line 321 is inserted into the piston rod 21 of the magnetorheological damper 3. In this embodiment, when the transmission rod 143 is disposed within the piston rod 21 of the magnetorheological damper 3, a threading hole 1431 is provided in the transmission rod 143 to facilitate the arrangement of the power supply line 321. One end of the threading hole 1431 communicates with the end of the transmission rod 143 that is closer to the cam 141, and the other end communicates with the end of the transmission rod 143 that is farther from the cam 141.

[0120] Specifically, the first insertion hole 1411 is a flat hole.

[0121] In addition, if Figure 5 As shown, Figure 5 FIG1 is a schematic diagram of the structure of a transmission rod 143 provided in an exemplary embodiment of the present disclosure. A stepped groove 1432 is provided on the outer circumference of the transmission rod 143, and the stepped groove 1432 is provided adjacent to the cam 141. One side wall of the stepped groove 1432 is aligned with the hole wall of the first insertion hole 1411, and the other side wall of the stepped groove 1432 abuts against the end surface of the cam 141.

[0122] See also Figure 1In some embodiments, the support member 11 is provided with a first hole 111 and a second hole 112 in communication. The end of the first hole 111 away from the second hole 112 is in communication with the flow channel 12. The adjustment member 13 is slidably disposed within the first hole 111. The cam 141 is rotatably disposed within the second hole 112. One end of the transmission rod 143 is inserted into the second hole 112 and connected to the cam 141.

[0123] It can be understood that, in combination with the above embodiments of the specific structure of the support member 11, a portion of the second hole 112 is provided on the frame 113, and another portion is provided on the base 114. The end of the first hole 111 is connected to the middle of the second hole 112.

[0124] Specifically, the axis of the first hole 111 is perpendicular to the axis of the second hole 112 .

[0125] In this embodiment, at least a portion of the adjustment member 13 can be disposed inside the support member 11 to improve the flatness of the outer surface of the support member 11 , thereby facilitating the outer surface of the support member 11 to cooperate with other components of the damper 3 .

[0126] See also Figure 1 In some embodiments, the transmission member 14 further includes a rotation support seat 116 . The rotation support seat 116 is connected to the support member 11 and rotates with the cam 141 .

[0127] It is understandable that the cam 141 needs to rotate repeatedly during operation. Therefore, in order to ensure the smoothness of the rotation of the cam 141, the damping adjustment structure 1 used to rotate and support the cam 141 has a high structural processing accuracy.

[0128] Based on this, in this embodiment, the cam 141 is rotationally supported by the rotating support seat 116, and the rotating support seat 116 can be processed with high precision alone, which can improve the convenience of processing and reduce the processing cost.

[0129] See also Figure 1 In some embodiments, the support member 11 is provided with a first hole 111 and a second hole 112 that are connected to each other. The end of the first hole 111 away from the second hole 112 is connected to the flow channel 12. The adjusting member 13 is slidably set in the first hole 111. At least a portion of the rotating support seat 116 is set in the second hole 112. The cam 141 is located in the second hole 112 and rotates with the rotating support seat 116.

[0130] It can be understood that the first hole 111 is connected to the middle of the second hole 112, the cam 141 is set in the middle of the second hole 112, one end of the transmission rod 143 is inserted into one end of the second hole 112, and the rotating support seat 116 is inserted into the other end of the second through hole.

[0131] In this embodiment, through the above-mentioned arrangement, the rotating support seat 116 and the cam 141 can be arranged inside the support member 11, so as to improve the flatness of the outer surface of the support member 11, thereby facilitating the outer surface of the support member 11 to cooperate with other components of the damper 3.

[0132] See also Figure 1 In some embodiments, the rotating support base 116 includes a positioning shaft 1161, a main body 1162, and a mating shaft 1163, which are sequentially connected. The positioning shaft 1161 is engaged with the support member 11. The main body 1162 is disposed in the second hole 112. The mating shaft 1163 is inserted into the cam 141 and rotatably engages with the cam 141.

[0133] It can be understood that, in combination with the above embodiments of the specific structure of the support member 11, the positioning shaft 1161 is embedded in the first stopper 117. The positioning shaft 1161 is engaged with the base 114 for blocking.

[0134] In this embodiment, the positioning shaft 1161 engages with the support member 11 to axially position the rotating support base 116, while the main body 1162 engages with the second hole 112 to radially position the rotating support base 116. This improves the installation accuracy of the rotating support base 116. Furthermore, the mating shaft 1163 engages with the cam 141, allowing for high-precision machining of the mating shaft 1163 to ensure smooth rotation of the cam 141.

[0135] See also Figure 1 In some embodiments, the elastic member 142 is sleeved on the adjusting member 13. In this way, the elastic compression and deformation recovery of the elastic member 142 can be guided by the adjusting member 13, thereby improving the consistency of the deformation of the elastic member 142.

[0136] See also Figure 1 In some embodiments, the support member 11 is provided with a first hole 111 and a second hole 112 that are connected to each other. One end of the first hole 111 away from the second hole 112 is connected to the flow channel 12. The adjustment member 13 is slidably disposed in the first hole 111. The cam 141 is rotatably disposed in the second hole 112. The elastic member 142 is sleeved on the adjustment member 13, and the two ends of the elastic member 142 are respectively connected to the adjustment member 13 and the inner wall of the first hole 111.

[0137] It can be understood that, in combination with the aforementioned embodiments regarding the specific structure of the support member 11 , the elastic member 142 is disposed within the base 114 .

[0138] In this embodiment, through the above-mentioned arrangement, the elastic member 142 and the adjusting member 13 can be arranged inside the support member 11, so as to improve the flatness of the outer surface of the support member 11, thereby facilitating the outer surface of the support member 11 to cooperate with other components of the damper 3.

[0139] See also Figure 1 , Figure 6 The exemplary embodiment of the present disclosure provides Figure 1 A partially enlarged schematic diagram. In some embodiments, the first hole 111 includes a first sub-hole 1111 and a second sub-hole 1112, the apertures of which increase successively. The end of the first sub-hole 1111 away from the second sub-hole 1112 is connected to the flow channel 12. The adjusting member 13 includes a connected adjusting body 132 and a stopper 131. The adjusting body 132 is slidably disposed in the first sub-hole 1111. The stopper 131 is disposed in the second sub-hole 1112. The end of the adjusting body 132 away from the stopper 131 can extend into or out of the flow channel 12. Among them, the cam 141 is in contact with the stopper 131. The two ends of the elastic member 142 are respectively in contact with the stopper 131 and the bottom of the second sub-hole 1112. In this way, the two ends of the elastic member 142 can be reliably in contact with the driving member and the support member 11, so that the elastic member 142 can be deformed as the adjusting member 13 slides, thereby improving the reliability of the damping adjustment structure 1.

[0140] See also Figure 1 In some embodiments, there are multiple flow channels 12 and multiple adjustment members 13. The multiple flow channels 12 are arranged in a one-to-one correspondence with the multiple adjustment members 13. This can help improve the symmetry of the damping adjustment structure 1 and improve its stress state.

[0141] Specifically, there are two flow channels 12 and two regulating members 13, such as Figure 2 As shown, the two flow channels 12 are distributed symmetrically around the center.

[0142] See also Figure 1 In some embodiments, the sliding direction of the adjusting member 13 is perpendicular to the extending direction of the flow channel 12. In this way, the operability of driving the adjusting member 13 to slide and the reliability of the power transmission can be improved.

[0143] See also Figure 7 , Figure 7 is a schematic structural diagram of a piston assembly 2 provided in an exemplary embodiment of the present disclosure. The present application also provides a piston assembly 2. The piston assembly 2 includes a piston rod 21 and the damping adjustment structure 1 provided in some embodiments of the present application. One end of the piston rod 21 is connected to a support member 11. A flow channel 12 extends along the axis of the piston rod 21.

[0144] In this embodiment, by adopting the damping adjustment structure 1 provided in some embodiments of the present application, the damping force adjustment range of the damper 3 can be increased to meet the requirements of more control damping values ​​of the vehicle 4, thereby improving the operational stability of the vehicle 4 and the ride comfort of the vehicle 4.

[0145] See also Figure 7 In some embodiments, the piston rod 21 is plugged into the support member 11. This increases the area of ​​the mating surface between the piston rod 21 and the support member 11, thereby improving the reliability of the connection between the piston rod 21 and the support member 11.

[0146] Specifically, a second insertion hole 1133 is provided on the skeleton 113 , and the end of the piston rod 21 is inserted into the second insertion hole 1133 .

[0147] Optionally, the second insertion hole 1133 is coaxially arranged with the second hole 112 and communicates with the second hole 112 .

[0148] See also Figure 7 In some embodiments, the piston assembly 2 further includes a second stopper 23. The second stopper 23 is sleeved on the piston rod 21 and connected to the support member 11. The flow channel 12 passes through the second stopper 23.

[0149] It can be understood that the first stopper 117 and the second stopper 23 are respectively located at two ends of the frame 113 .

[0150] It can be understood that the second stopper 23 is connected to the frame 113. Specifically, the second stopper 23 can be connected to the frame 113 by adhesive bonding, injection molding, clamping, or screws.

[0151] Compared with the structure directly formed on the support member 11 and connected to the piston rod 21, in this embodiment, the support member 11 and the piston rod 21 are connected by providing a second stopper 23, which can reduce the manufacturing difficulty and improve the convenience of maintenance.

[0152] See also Figure 7 In some embodiments, the piston assembly 2 further includes a retaining ring 24. The second stopper 23 is provided with a mating through-hole 231. The second stopper 23 is sleeved onto the piston rod 21 through the mating through-hole 231. The inner circumference of the retaining ring 24 is engaged with the piston rod 21. The outer circumference of the retaining ring 24 is engaged with the wall of the mating through-hole 231.

[0153] In this embodiment, the second stopper 23 is connected to the piston rod 21 by using a retaining ring 24, which not only makes the connection between the second stopper 23 and the piston rod 21 easy to operate and has low operation difficulty, but also improves the connection reliability, and the connection structure is more compact and occupies less space.

[0154] See also Figure 7 In some embodiments, a second flange 1134 is provided on the edge of the end surface of the support member 11 close to the second stopper 23. The second flange 1134 is located on the side of the second stopper 23 facing away from the support member 11, and the second flange 1134 overlaps the second stopper 23.

[0155] Exemplarily, the second flange 1134 is formed by injection molding. Specifically, the base 114 and the second stopper 23 are placed in a mold cavity of the molded skeleton 113, and then injection molding is performed into the mold cavity. After the injection molding material solidifies, the skeleton 113 and the second flange 1134 overlapping the second stopper 23 are formed.

[0156] In this embodiment, the second stopper 23 is fixed by the second flange 1134 , which can improve the position stability of the second stopper 23 relative to the support member 11 , thereby improving the structural reliability of the piston assembly 2 .

[0157] See also Figure 7 In some embodiments, a fourth hole 211 is provided within the piston rod 21. The fourth hole 211 is configured to engage with the transmission member 14. The transmission member 14 is configured to drive the adjustment member 13 to slide under the action of a force, so that at least a portion of the adjustment member 13 can extend into or out of the flow channel 12. This improves the structural compactness of the piston assembly 2 with the drive member, thereby facilitating the structural compactness of the damper 3.

[0158] Specifically, the transmission rod 143 is disposed in the fourth hole 211 and is clearance-fitted with the piston rod 21 .

[0159] In addition, when the piston assembly 2 is applied to the magnetorheological damper 3 , the power supply line 321 of the electromagnetic coil 32 may also be passed through the transmission rod 143 .

[0160] Correspondingly, in order to prevent the rotation of the transmission rod 143 from damaging the power supply line 321 , a limiting structure may be provided between the transmission rod 143 and the piston rod 21 to limit the rotation angle of the transmission rod 143 relative to the piston rod 21 .

[0161] Specifically, if Figure 8 As shown, Figure 8 yes Figure 7 A cross-sectional view of the middle BB is shown. A limit block 1433 is provided on the outer circumference of the transmission rod 143. A limit groove 212 is provided on the wall of the fourth hole 211. The limit block 1433 engages with the limit groove 212. This allows the limit block 1433 to rotate between the two side walls of the limit groove 212, thereby preventing the transmission rod 143 from rotating excessively and damaging the power supply line 321.

[0162] Optionally, there are two limit grooves 212 and two limit blocks 1433 , and the two limit blocks 1433 are respectively matched with the two limit grooves 212 , and the limit blocks 1433 are symmetrically distributed along the axis of the piston rod 21 .

[0163] See also Figure 7 In some embodiments, a guide sleeve 22 is sleeved on the outer circumference of the support member 11 .

[0164] The guide sleeve 22 may be made of non-metallic material, such as polytetrafluoroethylene or nylon.

[0165] In this embodiment, by providing the guide sleeve 22, the movement of the piston assembly 2 can be guided, and the friction between the piston assembly 2 and the wall of the inner cavity 311 of the damper 3 can be reduced, thereby improving the smoothness of the movement of the piston assembly 2.

[0166] See also Figure 9 , Figure 9 is a schematic structural diagram of a damper 3 provided in an exemplary embodiment of the present disclosure. The embodiment of the present application further provides a damper 3. The damper 3 includes a cylinder assembly 31 and the aforementioned piston assembly 2. The cylinder assembly 31 has an inner cavity 311. The inner cavity 311 is filled with a working fluid. The damping adjustment structure 1 is disposed in the inner cavity 311 and slidably engages with the cavity wall of the inner cavity 311. The piston rod 21 extends out of the cylinder assembly 31 at one end away from the support member.

[0167] In this embodiment, by adopting the piston assembly 2 provided in some embodiments of the present application, the damping force adjustment range of the damper 3 can be increased to meet the requirements of more control damping values ​​of the vehicle 4, thereby improving the operational stability of the vehicle 4 and the ride comfort of the vehicle 4.

[0168] In some embodiments, the working fluid is a magnetorheological fluid. The damper 3 further includes an electromagnetic coil 32 . The electromagnetic coil 32 is wound around the support member 11 .

[0169] It can be understood that the axis of the electromagnetic coil 32 is coaxial with the axis of the piston rod 21 .

[0170] It can be understood that magnetorheological fluid is a suspension formed by the uniform dispersion of tiny magnetic particles (usually ferromagnetic particles, such as carbonyl iron particles) in a non-magnetic liquid (such as mineral oil, silicone oil, etc.). In the absence of a magnetic field, magnetorheological fluid has a low viscosity. When a magnetic field is applied around the magnetorheological fluid, the magnetic particles are rapidly polarized under the action of the magnetic field, forming chain or columnar structures along the direction of the magnetic field. These structures formed by the arrangement of magnetic particles hinder the free flow of the fluid, causing the viscosity of the magnetorheological fluid to increase sharply. Moreover, the stronger the magnetic field intensity and the more densely packed the magnetic particles, the higher the viscosity of the magnetorheological fluid and the greater the damping value.

[0171] In addition, the first stopper 117, the second stopper 23, etc. can be made of soft magnetic materials to prevent them from affecting the magnetic field formed by the electromagnetic coil 32. Soft magnetic materials are magnetic materials that are easily magnetized and whose magnetism quickly decreases or disappears after the external magnetic field is removed. For example, iron-silicon alloys.

[0172] In this embodiment, by using magnetorheological fluid and electromagnetic coil 32 to adjust fluid damping, damper 3 has strong adjustability, enabling the current to be adjusted to achieve different damping forces. Furthermore, the response speed of damper 3 is improved, allowing damper 3 to react quickly to vibrations or impacts, providing timely damping force to suppress vibrations.

[0173] Furthermore, the magnetorheological fluid, under the influence of the magnetic field of the electromagnetic coil 32, generates a chain-like magnetorheological fluid, enabling adjustment of varying damping forces with a nearly symmetrical damping force bandwidth. This addresses the limited bandwidth of other electronically controlled dampers 3 under compression conditions. The wider damping force bandwidth of this embodiment improves the handling performance of the vehicle 4 while ensuring ride comfort, while also balancing safety and comfort.

[0174] See also Figure 9 In some embodiments, the electromagnetic coil 32 is disposed in the support member 11. One end of the power supply line 321 of the electromagnetic coil 32 is connected to the electromagnetic coil 32, and the other end passes through the support member 11 and the piston rod 21 and is connected to the power source.

[0175] It can be understood that the internal structure of the support member 11 located inside the electromagnetic coil 32 is first injection molded, and then the electromagnetic coil 32 is wound on the internal structure. Next, the internal structure with the electromagnetic coil 32 wound, the base 114, the rotating support seat 116, the cam 141, the spring, the adjustment member 13, the first stopper 117, and the second stopper 23 are assembled and placed in the mold cavity for injection to form the external structure that encloses the electromagnetic coil 32 and form the first flange 1132 and the second flange 1134.

[0176] In this embodiment, by arranging the electromagnetic coil 32 in the support member 11, the electromagnetic coil 32 will not be displaced or loosened due to vibration, impact or other external forces during the operation of the damper 3, thereby ensuring that the magnetic field can accurately act on the magnetorheological fluid, thereby facilitating the precise adjustment of the damping force.

[0177] See also Figure 9 In some embodiments, the damper 3 further includes a floating piston 34. The floating piston 34 is located on the side of the damping adjustment structure 1 away from the piston rod 21. The floating piston 34 slides with the wall of the inner cavity 311. The inner cavity 311 includes a liquid cavity 3112 and an air cavity 3111. The liquid cavity 3112 is filled with a working fluid. The air cavity 3111 is filled with gas. The floating piston 34 is located between the air cavity 3111 and the liquid cavity 3112. The piston assembly 2 is disposed in the liquid cavity 3112.

[0178] The portion of the liquid chamber 3112 located between the piston assembly 2 and the floating piston 34 is the compression chamber 3114 , and the portion of the liquid chamber 3112 located on the side of the piston assembly 2 away from the floating piston 34 is the recovery chamber 3113 .

[0179] Specifically, during the damper 3's compression stroke, the piston assembly 2 moves downward. When the working fluid in the compression chamber 3114 of the damper 3 is subjected to pressure from the piston assembly 2, a portion of the working fluid transfers this pressure to the floating piston 34. At this point, the floating piston 34 slides downward, compressing the gas in the gas chamber 3111. Another portion of the working fluid enters the recovery chamber 3113 through the flow channel 12 until the force exerted by the gas in the gas chamber 3111 on the floating piston 34 matches the pressure exerted on the floating piston 34 by the working fluid from the piston assembly 2, i.e., a pressure equilibrium is reached.

[0180] It will be appreciated that, because the restoring chamber 3113 cooperates with the piston rod 21, when the piston assembly 2 moves downward a certain distance, the volume of the working fluid reduced in the compression chamber 3114 is greater than the volume of the working fluid increased in the restoring chamber 3113. At this point, the floating piston 34 moves downward along with the downward movement of the piston assembly 2 to compensate for the volume difference between the volume of the working fluid reduced in the compression chamber 3114 and the volume of the working fluid increased in the restoring chamber 3113.

[0181] During the extension stroke of the damper 3, the piston assembly 2 moves upward, and the working fluid located in the recovery chamber 3113 inside the damper 3 flows into the compression chamber 3114 through the flow channel 12 after being subjected to the pressure of the piston assembly 2, until the force exerted by the gas in the air chamber 3111 on the floating piston 34 is consistent with the pressure exerted on the floating piston 34 by the working fluid of the piston assembly 2, that is, until a pressure equilibrium state is reached.

[0182] It will be appreciated that, because the restoring chamber 3113 cooperates with the piston rod 21, when the piston assembly 2 moves upward a certain distance, the volume of working fluid added to the compression chamber 3114 is greater than the volume of working fluid reduced in the restoring chamber 3113. At this point, the floating piston 34 moves upward as the piston assembly 2 moves upward, compensating for the difference between the volume of working fluid added to the compression chamber 3114 and the volume of working fluid added to the restoring chamber 3113.

[0183] In this embodiment, by providing the floating piston 34 , the volume difference of the damper 3 under different working states can be compensated, so as to improve the working reliability of the damper 3 .

[0184] In conjunction with the electromagnetic coil 32 and the magnetorheological fluid, the adjustment of the damping force is described below.

[0185] During the compression stroke, piston assembly 2 moves downward, and a portion of the magnetorheological fluid in compression chamber 3114 enters recovery chamber 3113 through flow channel 12. At this point, electromagnetic coil 32 is energized, creating a magnetic field in flow channel 12. The magnetic field increases the viscosity of the magnetorheological fluid and strengthens its yield stress, creating a pressure differential between recovery chamber 3113 and compression chamber 3114, generating a greater damping force.

[0186] During the extension stroke, the piston assembly 2 moves upward, and a portion of the magnetorheological fluid in the restoring chamber 3113 enters the compression chamber 3114 through the flow channel 12. At this time, the electromagnetic coil 32 is energized, forming a magnetic field in the flow channel 12. The magnetic field increases the viscosity of the magnetorheological fluid and strengthens its yield stress, creating a pressure difference between the restoring chamber 3113 and the compression chamber 3114, generating a greater damping force.

[0187] Since the strength of the magnetic field is determined by the magnitude of the current, the damping force can be effectively adjusted by controlling the magnitude of the current applied to the electromagnetic coil 32 .

[0188] In addition, on the basis of the above-mentioned adjustment, it is possible to choose whether to drive the adjustment member 13 to slide according to the required damping force, so that on the basis of adjusting the damping force through the electromagnetic coil 32, the damping force can also be adjusted by changing the flow area of ​​the flow channel 12, thereby increasing the adjustment range of the damping force of the damper 3 and increasing the damping force bandwidth of the damper 3.

[0189] See also Figure 9 In some embodiments, the floating piston 34 includes a piston body 341, an oil scraper ring 342, and / or a piston seal 343. The piston body 341 is in sliding engagement with the wall of the inner cavity 311. The oil scraper ring 342 is sleeved on the outer circumference of the piston body 341 and partially embedded within the piston body 341. The piston seal 343 is sleeved on the outer circumference of the piston body 341 and partially embedded within the piston body 341.

[0190] Specifically, the floating piston 34 includes a piston body 341 and an oil scraper ring 342 , or includes a piston body 341 and a piston seal 343 , or includes a piston body 341 , an oil scraper ring 342 and a piston seal 343 .

[0191] Specifically, the oil scraper ring 342 is located on a side of the piston sealing ring 343 close to the liquid chamber 3112 .

[0192] In this embodiment, the piston sealing ring 343 can effectively ensure the separation of the air cavity 3111 and the liquid cavity 3112 , while the oil scraper ring 342 can effectively prevent the working fluid in the liquid cavity 3112 from remaining in the air cavity 3111 .

[0193] See also Figure 9In some embodiments, the damper 3 further includes a buffer member 35, which is disposed on the piston rod 21 and located in the inner cavity 311. Thus, during operation of the damper 3, especially when the piston rod 21 rapidly extends and contracts, causing the damping adjustment structure 1 to rapidly approach the end cap of the cylinder assembly, the buffer member 35 can be compressed to elastically deform and absorb the impact energy, thereby preventing the impact force from being directly transmitted to the entire damper 3 structure and other components connected thereto, thereby effectively reducing the risk of component damage that may be caused by impact and improving the stability and durability of the damper 3.

[0194] See also Figure 9 In some embodiments, the buffer member 35 includes a restoring buffer block 351 and a positioning block 352. The restoring buffer block 351 is disposed on the piston rod 21. The positioning block 352 is disposed on the piston rod 21 and is located on the side of the restoring buffer block 351 that is closer to the damping adjustment structure 1. This results in a simple structure and a small number of components for the buffer member 35, thereby reducing manufacturing costs and improving maintenance convenience.

[0195] Specifically, the restoring buffer block 351 and the positioning block 352 are both sleeved on the piston rod 21 .

[0196] See also Figure 9 In some embodiments, the damper 3 further includes a mounting yoke 36. The mounting yoke 36 is connected to the outer cylinder 312 of the cylinder assembly 31 and is disposed away from the piston rod 21. The opening of the mounting yoke 36 is disposed away from the cylinder assembly 31. This improves the ease of connection and reliability between the damper 3 and relevant components of the vehicle 4.

[0197] In addition, the cylinder assembly 31 includes an outer cylinder 312, a guide 313, a sealing ring for the guide 313, an oil scraper ring 342 for the guide 313, and an oil seal for the guide 313. An opening is provided at one end of the outer cylinder 312, and the guide 313 is disposed in the opening and sleeved onto the piston rod 21. The sealing ring for the guide 313 is disposed between the outer circumferential surface of the guide 313 and the inner wall of the outer cylinder 312 to seal the guide 313 to the outer cylinder 312. The oil scraper ring 342 for the guide 313 is disposed between the piston rod 21 and the guide 313. The oil seal for the guide 313 is disposed between the piston rod 21 and the guide 313 and is located on the side of the adjustment structure facing away from the damping adjustment structure 1. The oil seal for the guide 313 seals the guide 313 to the piston rod 21.

[0198] See also Figure 10 , Figure 10 4 is a structural block diagram of a vehicle 4 provided in an exemplary embodiment of the present disclosure. The embodiment of the present application further provides a vehicle 4, which includes the aforementioned damper 3.

[0199] Specifically, the vehicle 4 includes a shock absorber including a damper 3 .

[0200] In this embodiment, by adopting the aforementioned damper 3 , the damping force adjustment range can be increased to meet the requirements of more control damping values ​​of the vehicle 4 , thereby improving the operational stability of the vehicle 4 and the ride comfort of the vehicle 4 .

[0201] When the damper 3 provided in this embodiment is applied to the vehicle 4, it can not only well meet the requirements of the suspension system for continuous control of any response changes of the vehicle 4, such as vibration control caused by uneven roads, roll control when turning, and pitch motion control when the vehicle 4 accelerates and brakes, but also effectively balance the handling and smoothness of the vehicle 4.

[0202] When the damper 3 provided in this embodiment is applied to a vehicle 4 , its operation scenarios include but are not limited to the following scenarios.

[0203] 1. Anti-roll control

[0204] Damper 3 prevents vehicle 4 from rolling when turning or navigating a curved road. During sharp turns, the IMU (Inertial Measurement Unit) detects changes in vehicle posture and, using a related algorithm, increases the compression damping force of damper 3 on the steering side, thereby reducing the roll angle. Simultaneously, the tension damping force of damper 3 on the steering side is reduced, minimizing the risk of tire liftoff.

[0205] 2. Anti-vehicle head lift control

[0206] Damper 3 is used to prevent the rear end of vehicle 4 from squatting during startup or sudden acceleration. When vehicle 4 accelerates suddenly or starts, the front of the vehicle typically pitches up and the rear of the vehicle pitches down. To control the pitch and squat angles, the damping force of damper 3 at the front and rear ends of vehicle 4 can be increased.

[0207] 3. Anti-sinking control

[0208] Damper 3 is used to prevent the front of vehicle 4 from dipping during braking. When vehicle 4 decelerates or stops suddenly, the front of the vehicle typically dips and the rear of the vehicle pitches up. To control the pitch and dip angles, the damping force of damper 3 at the front and rear ends of vehicle 4 can be increased.

[0209] 4. Body posture control

[0210] Damper 3 is used to improve vehicle body stability during driving. If the vehicle is detected as being on a single side of an uneven road, damper 3 on that side or in a single unit is compressed, reducing the damping force and minimizing vehicle body roll. This stabilizes the vehicle's posture and enhances ride comfort.

[0211] 5. Bumpy road surface control

[0212] The damper 3 can be used to improve the ride comfort on uneven roads. When it is determined that the wheel bounce acceleration increases, a control signal is sent to the controller to reduce the damping force of the damper 3, thereby increasing the ride comfort.

[0213] It is understood that increasing the current flowing through the electromagnetic coil 32 of the damper 3 and / or increasing the depth of the adjusting member 13 extending into the flow channel 12 can increase the damping force of the damper 3 during compression or extension. Conversely, decreasing the current flowing through the electromagnetic coil 32 of the damper 3 and / or decreasing the depth of the adjusting member 13 extending into the flow channel 12 can reduce the damping force of the damper 3 during compression or extension.

[0214] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0215] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0216] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0217] The above are merely 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 damping adjustment structure (1), characterized in that: include: A support member (11) having a flow channel (12); and an adjusting member (13) which is arranged on the supporting member (11) and is configured to slide under the driving force so as to at least partially extend into or exit from the flow channel (12).

2. The damping adjustment structure (1) according to claim 1, characterized in that: The support member (11) is provided with a first hole (111), one end of the first hole (111) is communicated with the flow channel (12), and the regulating member (13) is slidably arranged in the first hole (111).

3. The damping adjustment structure (1) according to claim 2, characterized in that: The support member (11) comprises a frame (113) and a base (114); the frame (113) is provided with a mounting hole (1131); the flow channel (12) is provided on the frame (113); one end of the flow channel (12) extends to the hole wall of the mounting hole (1131); the base (114) is provided in the mounting hole (1131); and the first hole (111) is provided on the base (114).

4. The damping adjustment structure (1) according to claim 3, characterized in that: The support member (11) further includes a first stopper (117), the first stopper (117) being located on a side of the base (114) away from the bottom of the mounting hole (1131); the first stopper (117) is connected to the frame (113) and abuts against the base (114); and the flow channel (12) passes through the first stopper (117).

5. The damping adjustment structure (1) according to claim 4, characterized in that: A first flange (1132) is provided on the edge of the end face of the skeleton (113) close to the first stopper (117), and the first flange (1132) is located on the side of the first stopper (117) facing away from the base (114), and the first flange (1132) overlaps the first stopper (117).

6. The damping adjustment structure (1) according to claim 2, characterized in that: The damping adjustment structure (1) further comprises a first sealing ring (15), wherein the first sealing ring (15) is sleeved on the adjustment member (13), and the outer peripheral surface of the first sealing ring (15) abuts against the hole wall of the first hole (111).

7. The damping adjustment structure (1) according to claim 1, characterized in that: The damping adjustment structure (1) further comprises a transmission member (14), one end of which is connected to the adjustment member (13), and the transmission member (14) is configured to drive the adjustment member (13) to slide under the action of a force, so that at least a portion of the adjustment member (13) can extend into or out of the flow channel (12).

8. The damping adjustment structure (1) according to claim 7, characterized in that: The transmission member (14) includes a cam (141) and an elastic member (142); the cam (141) is rotatably disposed on the support member (11) and contacts the adjustment member (13); and two ends of the elastic member (142) are respectively connected to the support member (11) and the adjustment member (13); The cam (141) is configured to rotate under the action of a force to drive the adjusting member (13) to slide and to cause the elastic member (142) to be elastically compressed.

9. The damping adjustment structure (1) according to claim 8, characterized in that: The transmission member further includes a transmission rod (143), the transmission rod (143) is connected to the cam (141), and the transmission rod (143) is configured to rotate under the action of force to drive the cam (141) to rotate.

10. The damping adjustment structure (1) according to claim 9, characterized in that: The cam (141) is provided with a first plug hole (1411), the cross section of the first plug hole (1411) is non-circular, and one end of the transmission rod (143) is plugged into the first plug hole (1411).

11. The damping adjustment structure (1) according to claim 9, characterized in that: The support member (11) is provided with a first hole (111) and a second hole (112) which are connected to each other. One end of the first hole (111) away from the second hole (112) is connected to the flow channel (12). The adjusting member (13) is slidably arranged in the first hole (111). The cam (141) is rotatably arranged in the second hole (112). One end of the transmission rod (143) is inserted into the second hole (112) and connected to the cam (141).

12. The damping adjustment structure (1) according to claim 8, characterized in that: The transmission member (14) further comprises a rotating support seat (116), wherein the rotating support seat (116) is connected to the support member (11) and is rotationally engaged with the cam (141).

13. The damping adjustment structure (1) according to claim 12, characterized in that: The support member (11) is provided with a first hole (111) and a second hole (112) which are connected to each other. One end of the first hole (111) away from the second hole (112) is connected to the flow channel (12). The adjusting member (13) is slidably arranged in the first hole (111). At least a part of the rotating support seat (116) is arranged in the second hole (112). The cam (141) is located in the second hole (112) and is rotatably matched with the rotating support seat (116).

14. The damping adjustment structure (1) according to claim 13, characterized in that: The rotating support seat (116) includes a positioning shaft (1161), a main body (1162) and a matching shaft (1163) connected in sequence, the positioning shaft (1161) is engaged with the support member, the main body (1162) is arranged in the second hole (112), and the matching shaft (1163) is inserted into the cam (141) and rotates with the cam (141).

15. The damping adjustment structure (1) according to claim 8, characterized in that: The elastic member (142) is sleeved on the adjusting member (13).

16. The damping adjustment structure (1) according to claim 15, characterized in that: The support member (11) is provided with a first hole (111) and a second hole (112) which are connected to each other; an end of the first hole (111) away from the second hole (112) is connected to the flow channel (12); the adjustment member (13) is slidably arranged in the first hole (111); and the cam (141) is rotatably arranged in the second hole (112); The elastic member (142) is sleeved on the adjusting member (13), and two ends of the elastic member (142) are respectively connected to the adjusting member (13) and the inner wall of the first hole (111).

17. The damping adjustment structure (1) according to claim 16, characterized in that: The first hole (111) comprises a first sub-hole (1111) and a second sub-hole (1112) whose hole diameters increase successively; an end of the first sub-hole (1111) away from the second sub-hole (1112) is in communication with the flow channel (12); The regulating member (13) comprises a regulating body (132) and a stopper (131) connected to each other, wherein the regulating body (132) is slidably disposed in the first sub-hole (1111), and the stopper (131) is disposed in the second sub-hole (1112), and an end of the regulating body (132) away from the stopper (131) can extend into or out of the flow channel (12); The cam (141) contacts the stopper (131), and both ends of the elastic member (142) respectively abut against the stopper (131) and the bottom of the second sub-hole (1112).

18. The damping adjustment structure (1) according to any one of claims 1 to 17, characterized in that: There are multiple flow channels (12) and multiple adjusting members (13), and the multiple flow channels (12) and the multiple adjusting members (13) are arranged in a one-to-one correspondence.

19. The damping adjustment structure (1) according to any one of claims 1 to 17, characterized in that: The sliding direction of the regulating member (13) is perpendicular to the extending direction of the flow channel (12).

20. A piston assembly (2), characterized in that include: Piston rod (21); And, the damping adjustment structure (1) according to any one of claims 1 to 19; One end of the piston rod (21) is connected to the support member (11), and the flow channel (12) is extended along the axis of the piston rod (21).

21. The piston assembly (2) according to claim 20, characterized in that The piston rod (21) is plugged into the support member (11).

22. The piston assembly (2) according to claim 21, characterized in that The piston assembly (2) further comprises a second stopper (23), which is sleeved on the piston rod (21) and connected to the support member (11); the flow channel (12) passes through the second stopper (23).

23. The piston assembly (2) according to claim 22, characterized in that The piston assembly (2) further includes a retaining ring (24), the second stopper (23) is provided with a matching through hole (231), the second stopper (23) is sleeved on the piston rod (21) through the matching through hole (231), the inner peripheral surface of the retaining ring (24) is engaged with the piston rod (21), and the outer peripheral surface of the retaining ring (24) is engaged with the hole wall of the matching through hole (231).

24. The piston assembly (2) according to claim 22, characterized in that A second flange (1134) is provided on the edge of the end face of the support member (11) close to the second stopper (23), the second flange (1134) is located on the side of the second stopper (23) facing away from the support member (11), and the second flange (1134) overlaps the second stopper (23).

25. The piston assembly (2) according to claim 20, characterized in that A fourth hole (211) is provided inside the piston rod (21), and the fourth hole (211) is configured to cooperate with the transmission member (14). The transmission member (14) is configured to drive the adjustment member (13) to slide under the action of a force, so that at least a portion of the adjustment member (13) can extend into or exit the flow channel (12).

26. The piston assembly (2) according to any one of claims 20 to 25, characterized in that The outer peripheral surface of the support member (11) is sleeved with a guide sleeve (22).

27. A damper (3), characterized in that include: The cylinder assembly (31) has an inner cavity (311), wherein the inner cavity (311) is filled with a working fluid; And, the piston assembly (2) according to any one of claims 20 to 26; The damping adjustment structure (1) is arranged in the inner cavity (311) and is slidably engaged with the cavity wall of the inner cavity (311); and the end of the piston rod (21) away from the support member passes through the cylinder assembly (31).

28. The damper (3) according to claim 27, characterized in that The working fluid is a magnetorheological fluid, and the damper (3) further comprises an electromagnetic coil (32), wherein the electromagnetic coil (32) is wound on the support member (11).

29. The damper (3) according to claim 28, characterized in that The electromagnetic coil (32) is arranged in the support member (11), one end of the power supply line (321) of the electromagnetic coil (32) is connected to the electromagnetic coil (32), and the other end passes through the support member (11) and the piston rod (21) and is connected to the power supply.

30. The damper (3) according to claim 27, characterized in that The damper (3) further comprises a floating piston (34), the floating piston (34) being located on a side of the damping adjustment structure (1) away from the piston rod (21), and the floating piston (34) being in sliding engagement with a cavity wall of the inner cavity (311); The inner cavity (311) includes a liquid cavity (3112) and an air cavity (3111), the liquid cavity (3112) is filled with the working fluid, and the air cavity (3111) is filled with gas. The floating piston (34) is located between the air cavity (3111) and the liquid cavity (3112), and the piston assembly (2) is arranged in the liquid cavity (3112).

31. The damper (3) according to claim 30, characterized in that The floating piston (34) comprises: The piston body (341) is slidably engaged with the cavity wall of the inner cavity (311); and An oil scraper ring (342) is sleeved on the outer circumferential surface of the piston body (341) and partially embedded in the piston body (341); and / or a piston sealing ring (343) is sleeved on the outer circumferential surface of the piston body (341) and partially embedded in the piston body (341).

32. The damper (3) according to claim 27, characterized in that The damper (3) further comprises a buffer member (35), wherein the buffer member (35) is arranged on the piston rod (21) and is located in the inner cavity (311).

33. The damper (3) according to claim 32, characterized in that The buffer member (35) comprises: A restoring buffer block (351) is provided on the piston rod (21); and a positioning block (352) is provided on the piston rod (21) and is located on a side of the restoring buffer block (351) close to the damping adjustment structure (1).

34. The damper (3) according to any one of claims 27 to 33, characterized in that The damper (3) further comprises a mounting yoke (36), the mounting yoke (36) being connected to the outer cylinder (312) of the cylinder assembly (31) and being arranged away from the piston rod (21), and the opening of the mounting yoke (36) being arranged away from the cylinder assembly (31).

35. A vehicle (4), characterized in that Comprising a damper (3) according to any one of claims 27 to 34.

Images