Damping device and vehicle

Abstract

The embodiment of the present application provides a damping device and a vehicle. The vehicle comprises the damping device. The damping device comprises a cylinder structure, at least one damping valve and a one-way valve body. The cylinder structure is provided with a mounting hole. The damping valve comprises a mounting seat and a damping valve body, the mounting seat is mounted at the mounting hole, the mounting seat comprises a supporting portion and a side portion connected to the supporting portion, the side portion and the supporting portion form a mounting cavity, and the damping valve body is arranged in the mounting cavity. The one-way valve body is clamped between the damping valve body and the supporting portion. The damping device and the vehicle provided by the embodiment of the present application are based on the one-way valve body being clamped between the damping valve body and the supporting portion, and the one-way valve body is fixed by the damping valve body and the supporting portion, so that the lateral force of the one-way valve body on the cylinder structure is avoided, and the reliability of the damping device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shock-absorbing devices, and in particular to a shock-absorbing device and a vehicle. BACKGROUND

[0002] In existing shock absorbers, a throttle valve fixes a one-way valve by pressing the one-way valve against the side wall of a cylinder body. However, this causes the one-way valve to generate a lateral pre-tightening force on the cylinder body, and when oil flows during operation of the shock-absorbing device, a pressure is generated on the valve disc of the one-way valve, and this pressure is transmitted to the cylinder body through the one-way valve, which causes the cylinder body to be easily deformed by being pressed by the one-way valve, and even causes the shock-absorbing device to be damaged. SUMMARY

[0003] Embodiments of the present application provide a shock-absorbing device and a vehicle to solve the problem that the cylinder body is easily deformed by being pressed by the one-way valve.

[0004] In the first aspect, the embodiments of the present application provide a shock-absorbing device, which includes a cylinder structure, at least one damping valve, and a one-way valve body. An outer wall of the cylinder structure is provided with a mounting hole. The damping valve includes a mounting seat and a damping valve body, the mounting seat is mounted at the first seat hole, the mounting seat includes a support portion and a side portion connected to the support portion, the side portion and the support portion form a mounting cavity, and the damping valve body is arranged in the mounting cavity. The one-way valve body is arranged in the mounting cavity and clamped between the damping valve body and the support portion.

[0005] In some embodiments, the one-way valve body is arranged in abutment with the damping valve body.

[0006] In some embodiments, when the one-way valve body is opened, a first cavity of the cylinder structure is communicated with a second cavity of the cylinder structure through the one-way valve body; when the one-way valve body is closed, the second cavity is communicated with the first cavity through the damping valve body, and the first cavity is different from the second cavity.

[0007] In some embodiments, the mounting seat is provided with a communication hole communicating the mounting cavity and the first cavity, the one-way valve body includes a valve seat, a one-way valve disc, and an elastic member, the valve seat forms a first cavity with the damping valve body, the one-way valve disc and the elastic member are accommodated in the first cavity, the elastic member is clamped between the one-way valve disc and the damping valve body, and the one-way valve disc is used to be one-way communicated with the first cavity through the communication hole.

[0008] In some embodiments, the valve seat includes a valve plate receiving portion and a cylinder body connecting portion connected to the valve plate receiving portion. The valve plate receiving portion is sandwiched between the damping valve body and the support portion. The cylinder body connecting portion passes through the communicating hole and is spaced apart from the support portion.

[0009] In some embodiments, the valve plate receiving portion and the damping valve body form the first cavity. The valve plate receiving portion has a first fluid channel communicating with the communicating hole and the first cavity. When the one-way valve body is open, the one-way valve plate moves toward the damping valve body, and the communicating hole communicates with the first cavity through the first fluid channel. When the one-way valve body is closed, the one-way valve plate covers the first fluid channel and closes the first fluid channel. The cylinder connecting portion has a second fluid channel communicating with the second cavity and the first cavity.

[0010] In some embodiments, the valve plate receiving portion includes a first abutting portion and a second abutting portion. The first abutting portion is connected to the circumferential edge of the second abutting portion facing the damping valve body. The cylinder connecting portion is disposed on the side of the second abutting portion away from the damping valve body. The first abutting portion, the second abutting portion, and the damping valve body surround to form the first cavity. The second abutting portion has a first fluid channel communicating with the first cavity and a second fluid channel spaced apart from the first fluid channel. The first fluid channel is disposed on the outer periphery of the second fluid channel. The cylinder connecting portion has a third fluid channel communicating with the second fluid channel and the second cavity. The one-way valve plate has a through hole corresponding to the position of the second fluid channel. When the one-way valve body is closed, the one-way valve plate abuts against the second abutting portion, and the one-way valve plate covers the first fluid channel. When the one-way valve body is open, the one-way valve plate is spaced apart from the second abutting portion.

[0011] In some embodiments, the valve plate receiving portion has a first protrusion that supports the one-way valve plate.

[0012] In some embodiments, the valve plate receiving portion has a second protrusion protruding from the side facing the damping valve body, and the second protrusion is disposed in contact with the damping valve body.

[0013] In some embodiments, a second cavity is formed between the damping valve body and the mounting base, the second cavity communicating with the first cavity, and the first cavity communicating with the second cavity when the damping valve body is open.

[0014] In some embodiments, the valve plate receiving portion is spaced apart from the side portion and forms a first sub-flow channel communicating with the second cavity. The support portion has a plurality of spaced protrusions on the side facing the valve plate receiving portion. The valve plate receiving portion abuts against the protrusions, and a second sub-flow channel communicating with the first cavity and the first sub-flow channel is formed between two adjacent protrusions.

[0015] In some embodiments, the damping valve body includes an end cap, a valve core, and a valve sleeve. The end cap abuts against the one-way valve body, and the valve sleeve and the end cap enclose a damping space. The end cap has an inlet channel communicating with the first cavity, and the valve sleeve has an outlet channel communicating with the second cavity. The valve core is disposed within the damping space. When the damping valve body is open, the valve core moves away from the one-way valve body, and the first cavity communicates with the second cavity through the inlet channel. When the damping valve body is closed, the valve core abuts against the end cap and closes the inlet channel and / or the outlet channel.

[0016] Secondly, embodiments of this application provide a vehicle that includes the aforementioned shock absorption device.

[0017] The shock absorption device and vehicle provided in this application embodiment are based on clamping the one-way valve body between the damping valve body and the support part, and fixing the one-way valve body by the damping valve body and the support part in the damping valve, thereby avoiding the one-way valve body from generating lateral force on the cylinder structure and improving the reliability of the shock absorption device. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the shock absorption device provided in the embodiments of this application.

[0020] Figure 2 yes Figure 1 Enlarged view of point I in the middle.

[0021] Figure 3 This is a schematic diagram of the mounting base provided in the embodiment of this application from one perspective.

[0022] Figure 4 This is a structural schematic diagram of the mounting base provided in an embodiment of this application from another perspective.

[0023] Figure 5 This is a schematic diagram of the structure of the one-way valve body provided in the embodiment of this application.

[0024] Figure 6 This is a schematic diagram of the valve seat provided in an embodiment of this application from one perspective.

[0025] Figure 7 This is a structural schematic diagram of the valve seat provided in an embodiment of this application from another perspective.

[0026] Key reference numerals in the attached drawings: Shock absorber - 100; Cylinder block structure - 10; First cylinder block - 11; Mounting hole - 111; First cavity - 101; Second cylinder block - 12; Second cavity - 102; Fourth cavity - 104; Fifth cavity - 105; First connecting hole - 121; First connector - 1211; Second connecting hole - 122; Second connector - 1221; Third cylinder block - 13; Third cavity - 103; Sixth cavity - 106; Seventh cavity - 107; First oil passage hole - 131; Second oil passage hole - 132; Separator-14; Separator Body-141; Separator Seal-142; Piston-15; Piston Rod-151; Piston Head-152; Piston Overpressure Channel-1521; Piston Overpressure Valve Plate-1522; Bottom Valve-16; Bottom Valve Return Channel-161; Bottom Valve Return Valve Plate-1611; Bottom Valve Overpressure Channel-162; Bottom Valve Overpressure Valve Plate-1621; Bottom Cover-17; Fork Arm-171; Top Cover-18; Connecting Sleeve-181; End Plate-182; Guide Sleeve-183; Guide Seal-1 84; Oil seal - 185; Damping valve - 20; Damping space - 201; Mounting base - 21; Support part - 211; Side part - 212; Mounting cavity - 213; First cavity - 2131; Second cavity - 2132; Connecting hole - 214; Boss - 215; Second sub-flow channel - 216; Damping valve body - 220; End cap - 22; Inlet channel - 221; Valve core - 23; Valve sleeve - 24; Outlet channel - 241; Valve core elastic element - 25; Pressure cap - 26; Coil groove - 261; Outer shell - 27; Wire Ring-28; One-way valve body-30; Valve seat-300; Valve plate receiving part-31; First abutment part-311; Second protrusion-3111; Second abutment part-312; First fluid channel-3121; Second fluid channel-3122; First protrusion-3123; Connecting flow channel-313; First sub-flow channel-3231; Cylinder body connecting part-32; Third fluid channel-321; Connecting sealing groove-3212; Connecting seal-3213; One-way valve plate-33; Elastic element-34; Regulating valve-40.

[0027] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0029] In this document, references to "embodiment" or "implementation" mean that a particular feature, structure, or characteristic described in connection with an embodiment or implementation may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0030] It should be noted that the terminology in the specification, claims, and accompanying drawings of this application is only for describing specific embodiments and is not intended to limit this application. The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order.

[0031] Please refer to the following: Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 1 This is a schematic diagram of the structure of the shock absorption device 100 provided in the embodiments of this application; Figure 2 yes Figure 1 Enlarged view of point I in the middle; Figure 3 This is a schematic diagram of the mounting base 21 provided in an embodiment of this application from one perspective; Figure 4This is a schematic diagram of the mounting base 21 provided in an embodiment of this application from another perspective. This application provides a shock-absorbing device 100, which includes a cylinder structure 10, at least one damping valve 20, and a one-way valve body 30. The cylinder structure 10 is provided with a mounting hole 111. The damping valve 20 includes a mounting base 21 and a damping valve body 220. The mounting base 21 is mounted at the mounting hole 111. The mounting base 21 includes a support portion 211 and a side portion 212 connected to the circumferential edge of the support portion 211. The side portion 212 and the support portion 211 form a mounting cavity 213. The damping valve body 220 is disposed within the mounting cavity 213. The one-way valve body 30 is disposed within the mounting cavity 213 and sandwiched between the damping valve body 220 and the support portion 211. In this embodiment, the one-way valve body 30 is sandwiched between the damping valve body 220 and the support 211, and the one-way valve body 30 is fixed by the damping valve body 220 and the support 211, thereby avoiding lateral forces exerted by the one-way valve body 30 on the cylinder structure 10 and improving the reliability of the shock absorption device 100. The one-way valve body 30 and the damping valve body 220 are abutted against each other.

[0032] When the check valve body 30 is open, the first cavity 101 of the cylinder structure 10 is connected to the second cavity 102 of the cylinder structure 10 through the check valve body 30. That is, oil in the first cavity 101 can flow into the second cavity 102 through the check valve body 30, while oil in the second cavity 102 cannot flow into the first cavity 101 through the check valve body 30. When the check valve body 30 is closed, the second cavity 102 is connected to the first cavity 101 through the damping valve body 220. The first cavity 101 is different from the second cavity 102.

[0033] Specifically, the cylinder structure 10 includes a first cylinder 11, a second cylinder 12, and a third cylinder 13. A mounting hole 111 is formed on the side wall of the first cylinder 11. A cavity is formed inside the first cylinder 11, and the mounting hole 111 connects the cavity to the outside. A mounting seat 21 is sealed to the mounting hole 111. The second cylinder 12 is disposed inside the first cylinder 11, forming a first cavity 101 between the two. A cavity is formed inside the second cylinder 12. The third cylinder 13 is disposed inside the second cylinder 12, forming a second cavity 102 between the two. A third cavity 103 is formed inside the third cylinder 13. The support portion 211 has a connecting hole 214 on the side facing the cylinder structure 10, connecting the mounting cavity 213 and the first cavity 101.

[0034] Please see Figure 2 , Figure 5 , Figure 6 and Figure 7 , Figure 5 This is a schematic diagram of the structure of the one-way valve body 30 provided in the embodiments of this application;Figure 6 This is a schematic diagram of the valve seat 300 provided in an embodiment of this application from one perspective; Figure 7 This is a schematic diagram of the valve seat 300 provided in an embodiment of this application from another perspective. The one-way valve body 30 includes a valve seat 300, a one-way valve plate 33, and an elastic member 34. The valve seat 300 and the damping valve body 220 form a first cavity 2131. The one-way valve plate 33 and the elastic member 34 are respectively housed within the first cavity 2131. The elastic member 34 is sandwiched between the one-way valve plate 33 and the damping valve body 220. The one-way valve plate 33 is used to unidirectionally connect to the first cavity 2131 through a connecting hole 214.

[0035] The valve seat 300 includes a valve plate receiving portion 31 and a cylinder body connecting portion 32 connected to the valve plate receiving portion 31. The valve plate receiving portion 31 is sandwiched between the damping valve body 220 and the support portion 211. The cylinder body connecting portion 32 passes through the connecting hole 214 and extends out of the mounting cavity 213. A first connecting hole 121 communicating with the second cavity 102 is provided on the side wall of the second cylinder body 12. The end of the cylinder body connecting portion 32 away from the valve plate receiving portion 31 communicates with the second cavity 102 through the first connecting hole 121. In some embodiments, a first connector 1211 is provided on the side wall of the second cylinder body 12 at a position corresponding to the first connecting hole 121. The end of the cylinder body connecting portion 32 away from the valve plate receiving portion 31 is sealed to the first connector 1211. A connecting sealing groove 3212 is provided on the end of the cylinder body connecting portion 32 away from the valve plate receiving portion 31. The first connector 1211 is provided to cover the connecting sealing groove 3212. A connecting seal 3213 is provided in the connecting sealing groove 3212. The connecting seal 3213 is located between the inner side wall of the first connector 1211 and the outer side wall of the cylinder connecting part 32. The connecting seal 3213 is used to improve the connection sealing between the first connector 1211 and the cylinder connecting part 32.

[0036] The valve plate receiving portion 31 and the damping valve body 220 form a first cavity 2131. The valve plate receiving portion 31 has a first fluid channel 3121 connecting the first cavity 2131 and the connecting hole 214. When the one-way valve body 30 is open, the one-way valve plate 33 moves toward the damping valve body 220, and the connecting hole 214 communicates with the first cavity 2131 through the first fluid channel 3121. When the one-way valve body 30 is closed, the one-way valve plate 33 covers the first fluid channel 3121 and closes the first fluid channel 3121.

[0037] The valve plate receiving portion 31 includes a first abutting portion 311 and a second abutting portion 312. The first abutting portion 311 is connected to the circumferential edge of the second abutting portion 312 on the side facing the damping valve body 220 and extends in the direction of the damping valve body 220. The cylinder connecting portion 32 is connected to the side of the second abutting portion 312 away from the damping valve body 220 and extends in the direction away from the damping valve body 220. The first abutting portion 311 and the cylinder connecting portion 32 are constructed as cylindrical structures. The diameter of the first abutting portion 311 is larger than the diameter of the cylinder connecting portion 32. The end of the first abutting portion 311 near the cylinder connecting portion 32 and the end of the cylinder connecting portion 32 near the first abutting portion 311 are connected together via the second abutting portion 312. In some embodiments, the second abutment portion 312 may also be a hollow structure in the shape of a frustum, with the smaller diameter end of the second abutment portion 312 connected to the cylinder body connecting portion 32 and the larger diameter end connected to the first abutment portion 311.

[0038] The first abutment portion 311, the second abutment portion 312, and the damping valve body 220 together form a first cavity 2131. The second abutment portion 312 has a first fluid channel 3121 and a second fluid channel 3122 spaced apart from the first fluid channel 3121. The first fluid channel 3121 is located on the outer periphery of the second fluid channel 3122 and is spaced apart from the second fluid channel 3122. The cylinder connecting portion 32 has a third fluid channel 321 connecting the second cavity 102 and the second fluid channel 3122. A one-way valve plate 33 is located on the side of the second abutment portion 312 facing the damping valve body 220. The one-way valve plate 33 has a through hole corresponding to the position of the second fluid channel 3122. The one-way valve plate 33 is constructed as an annular plate. The diameter of the one-way valve plate 33 corresponds to the inner diameter of the first abutment portion 311. When the one-way valve plate 33 is installed in the valve plate receiving portion 31, the inner wall of the first abutment portion 311 can position the one-way valve plate 33. When the one-way valve body 30 is closed, the one-way valve plate 33 abuts against the second abutment portion 312, and the one-way valve plate 33 covers the first fluid passage 3121. The opening of the first fluid passage 3121 facing the damping valve body 220 is closed by the one-way valve plate 33, and oil cannot flow through the first fluid passage 3121. When the one-way valve body 30 is open, the one-way valve plate 33 and the second abutment portion 312 are spaced apart, and the opening of the first fluid passage 3121 facing the damping valve body 220 is open, allowing oil to flow through the first fluid passage 3121.

[0039] In this process, the oil in the first cavity 101 flows into the first fluid channel 3121 through the connecting hole 214 and comes into contact with the one-way valve plate 33. The pressure of the oil on the one-way valve plate 33 is opposite to the direction of the elastic force of the elastic element 34 on the one-way valve plate 33. When the pressure of the oil on the one-way valve plate 33 is greater than the elastic force of the elastic element 34 on the one-way valve plate 33, the oil pushes the one-way valve plate 33 toward the damping valve body 220, the first fluid channel 3121 is opened, and the oil flows into the first cavity 2131 through the first fluid channel 3121, and then into the second cavity 102 through the second fluid channel 3122 and the third fluid channel 321. Thus, the oil in the first cavity 101 flows into the second cavity 102 through the one-way valve body 30. After the oil in the second cavity 102 enters the first cavity 2131 through the third fluid channel 321 and the second fluid channel 3122, the pressure of the oil acting on the one-way valve plate 33 is in the same direction as the elastic force of the elastic member 34 acting on the one-way valve plate 33. The pressure and elastic force press the one-way valve plate 33 tightly onto the second abutment part 312. Therefore, the one-way valve plate 33 will block the first fluid channel 3121, so that the oil in the second cavity 102 cannot flow into the first cavity 101 through the one-way valve body 30.

[0040] Understandably, the elastic force exerted by the elastic element 34 on the one-way valve plate 33 needs to be greater than a threshold value to ensure that the one-way valve plate 33 remains covering the first fluid channel 3121 when the damping device 100 is subjected to vibration or other external influences, thereby allowing the one-way valve body 30 to better perform its one-way conduction function. Furthermore, when the pressure of the oil in the second cavity 102 is greater than the pressure in the first cavity 101, since the first cavity 2131 and the second cavity 102 are connected by the second fluid channel 3122 and the third fluid channel 321, the pressure of the oil in the first cavity 2131 on the one-way valve plate 33 is greater than the pressure of the oil in the first fluid channel 3121 on the one-way valve plate 33. Therefore, in addition to the elastic force of the elastic element 34, the one-way valve plate 33 is also subjected to the pressure of the oil, and the elastic force and the oil pressure act in the same direction, both pointing away from the damping valve body 220. In this embodiment, by sandwiching the first abutment portion 311 and the second abutment portion 312 between the damping valve body 220 and the support portion 211, the elastic force of the elastic element 34 acting on the one-way valve plate 33 and the pressure of the oil acting on the one-way valve plate 33 will be transmitted to the support portion 211. The elastic force and pressure will not act on the cylinder structure 10, that is, the one-way valve body 30 will not generate a lateral force acting on the side wall of the second cylinder 12, thereby avoiding the second cylinder 12 being squeezed and deformed by the one-way valve body 30, thereby improving the reliability of the shock absorption device 100.

[0041] Please refer to the following: Figure 2 and Figure 7The second abutment portion 312 has a first protrusion 3123 supporting the one-way valve plate 33 protruding from the side facing the first abutment portion 311. The one-way valve plate 33 is abutted against the side of the first protrusion 3123 away from the second abutment portion 312 by the elastic member 34. Exemplarily, the first protrusion 3123 can be constructed as two annular protrusions. The opening of the first fluid passage 3121 near the first abutment portion 311 is located between the two annular protrusions. After the one-way valve plate 33 abuts against the two annular protrusions, the surfaces of the one-way valve plate 33 and the two annular protrusions away from the second abutment portion 312 are in a sealed state, and the first fluid passage 3121 is sealed by the one-way valve plate 33. When the one-way valve plate 33 separates from the two annular protrusions, the first fluid passage 3121 is opened. The area of ​​the surface of the first protrusion 3123 away from the second abutment portion 312 is smaller than the area of ​​the surface of the second abutment portion 312 facing the damping valve body 220. In this embodiment, the first protrusion 3123 reduces the contact area between the second abutment portion 312 and the one-way valve plate 33, thereby reducing the machining area on the second abutment portion 312 and lowering the machining difficulty and cost of the valve seat 300. In some embodiments, the first protrusion 3123 can also be configured as an annular protrusion protruding from the opening edge of the first fluid channel 3121, and the number of the first protrusions 3123 can correspond to the number of the first fluid channels 3121.

[0042] A second protrusion 3111 protrudes from the end of the first abutment 311 away from the second abutment 312. The second protrusion 3111 fits snugly against the damping valve body 220, creating a seal between the end of the first abutment 311 away from the second abutment 312 and the damping valve body 220. The second protrusion 3111 reduces the contact area between the first abutment 311 and the damping valve body 220, thereby reducing the machining area on the first abutment 311 and lowering the machining difficulty and cost.

[0043] Please refer to the following: Figure 2 , Figure 3 and Figure 6A second cavity 2132 is formed between the damping valve body 220 and the mounting base 21. The second cavity 2132 communicates with the first cavity 101. The first cavity 2131 communicates with the second cavity 2132 when the damping valve body 220 is open. A connecting flow channel 313 is formed between the valve plate receiving portion 31 and the mounting base 21, connecting the first cavity 101 and the second cavity 2132. The connecting flow channel 313 includes a first sub-flow channel 3231 and a second sub-flow channel 216. Specifically, the valve plate receiving portion 31 is spaced apart from the side portion 212, and a first sub-flow channel 3231 communicating with the second cavity 2132 is formed therein. A plurality of bosses 215 are provided on the side of the support portion 211 facing the valve plate receiving portion 31, and the plurality of bosses 215 are spaced apart along the circumferential direction of the support portion 211. A second sub-flow channel 216 communicating with the first cavity 101 and the first sub-flow channel 3231 is formed between two adjacent bosses 215. In some embodiments, the connecting channel 313 may also be configured as a groove or channel formed on the side portion 212 and the support portion 211, or the connecting channel 313 may also be configured as a groove or channel formed on the first abutment portion 311 and the second abutment portion 312, or the connecting channel 313 may also be configured as a groove or channel formed in part on the mounting base 21 and in part on the valve plate receiving portion 31. In some embodiments, the first fluid channel 3121 may communicate with the connecting channel 313, that is, the first fluid channel 3121 is connected to the first sub-channel 3231 or the second sub-channel 216. In some embodiments, the first fluid channel 3121 may also be independently arranged with the connecting channel 313, that is, the first fluid channel 3121 and the connecting channel 313 are independently communicated with the first cavity 101.

[0044] The damping valve body 220 includes an end cap 22, a valve core 23, a valve sleeve 24, and a valve core elastic element 25. The end cap 22 is disposed between the valve sleeve 24 and the one-way valve body 30, and the valve plate receiving portion 31 abuts against the end cap 22. The valve sleeve 24 and the end cap 22 enclose a damping space for accommodating the valve core 23 and the valve core elastic element 25. The valve core 23 is located between the valve core elastic element 25 and the end cap 22. The valve core elastic element 25 abuts against the side of the valve core 23 away from the end cap 22. The end cap 22 has an inlet channel 221 communicating with a first cavity 2131. The valve sleeve 24 has an outlet channel 241 communicating with a second cavity 2132. For example, the liquid outlet channel 241 is opened on the side wall of the valve sleeve 24. The extension direction of the liquid outlet channel 241 is perpendicular to the central axis of the valve core 23. When the oil in the second cavity 2132 acts on the valve core 23 through the liquid outlet channel 241, the direction of the oil pressure is perpendicular to the movement direction of the valve core 23, and the oil cannot push the valve core 23 to move.

[0045] When the damping valve body 220 is open, the valve core 23 and the end cap 22 are spaced apart, and the first cavity 2131 is connected to the second cavity 2132 through the inlet channel 221 and the outlet channel 241. When the damping valve body 220 is closed, the valve core 23 abuts against the end cap 22 and closes the inlet channel 221 and / or the outlet channel 241. Specifically, when the damping valve body 220 is closed, the valve core 23 can simultaneously close the inlet channel 221 and the outlet channel 241, or close only one of the inlet channel 221 and the outlet channel 241.

[0046] Specifically, after the oil in the second cavity 102 enters the first cavity 2131 through the third fluid channel 321 and the second fluid channel 3122, the pressure of the oil acting on the valve core 23 and the elastic force of the valve core elastic element 25 acting on the valve core 23 are opposite in direction. When the pressure of the oil acting on the valve core 23 is greater than the elastic force of the valve core elastic element 25 acting on the valve core 23, the damping valve body 220 opens, and the oil pushes the valve core 23 to move away from the end cover 22, forming a gap between the valve core 23 and the end cover 22, that is, forming a damping port between the valve core 23 and the end cover 22 to dampen the oil. The flow resistance of the oil increases, and the damping port is connected to the outlet channel 241. At this time, the oil will enter the damping port through the inlet channel 221 and flow into the second cavity 2132 through the outlet channel 241. After the oil flows into the second cavity 2132, it flows into the first cavity 101 through the connecting flow channel 313. When the pressure of the oil acting on the valve core 23 is less than the elastic force of the valve core elastic element 25 acting on the valve core 23, the damping valve body 220 closes, the valve core 23 abuts against the end cover 22, and the liquid inlet channel 221 is sealed.

[0047] For example, the damping valve 20 can be configured as a solenoid valve. The damping valve 20 also includes a gland 26, a housing 27, and a coil 28. The housing 27 is disposed at the end of the side portion 212 away from the support portion 211. The housing 27 and the side portion 212 can be fixedly connected together by means of screwing, welding, snap-fitting, etc. The housing 27 and the side portion 212 are also sealed by a seal. The gland 26 is disposed between the housing 27 and the mounting base 21. One end of the gland 26 abuts against the housing 27, and the other end abuts against the valve sleeve 24. The end of the valve sleeve 24 away from the gland 26 abuts against the end cap 22. The valve core 23 is movable within the valve sleeve 24. The outer wall of the gland 26 is fitted against the inner wall of the side portion 212 and sealed by a seal. A coil groove 261 is provided on the side of the pressure cap 26 away from the valve sleeve 24. The coil 28 is set in the coil groove 261. By controlling the current of the coil 28, the clamping force between the valve core 23 and the end cap 22 can be controlled, thereby adjusting the size of the damping opening between the valve core 23 and the end cap 22.

[0048] Please refer to the following: Figure 1 and Figure 2The shock absorption device 100 also includes a separator 14 and a piston 15. The separator 14 is disposed between the second cylinder 12 and the third cylinder 13. The second cavity 102 is divided into a fourth cavity 104 and a fifth cavity 105 by the separator 14. The separator 14 includes a separator body 141 and a separator seal 142. The separator body 141 is sleeved on the outer wall of the third cylinder 13, and the separator seal 142 is disposed between the separator body 141 and the third cylinder 13. A positioning hole is provided on the second cylinder 12, and the separator body 141 extends from the positioning hole on the side away from the third cylinder 13 and is sealed to the wall of the positioning hole.

[0049] The first connecting hole 121 is connected to the fourth cavity. The first cavity 101 is connected to the fourth cavity 104 through the one-way valve body 30. The second cylinder body 12 is also provided with a second connecting hole 122 that connects to the fifth cavity 105. The damping device 100 also includes at least one regulating valve 40. The regulating valve 40 is connected to the second connecting hole 122 and connects the first cavity 101 and the fifth cavity 105. The regulating valve 40 is used to dampen the oil when the oil in the fifth cavity 105 enters the first cavity 101, thereby increasing the flow resistance of the oil. The effect of the regulating valve 40 on the oil is similar to or the same as that of the damping valve 20. In some embodiments, a second connector 1221 is provided on the side wall of the second cylinder body 12 at the position corresponding to the second connecting hole 122, and the regulating valve 40 is sealed to the second connector 1221.

[0050] Piston 15 is movably disposed within the third cylinder 13. Piston 15 includes piston rod 151 and piston head 152 connected to piston rod 151. The third cavity 103 is divided by piston 15 into a sixth cavity 106 and a seventh cavity 107. The sixth cavity 106 is located on the side of piston head 152 facing piston rod 151, and the seventh cavity 107 is located on the side of piston head 152 away from piston rod 151. A first oil passage hole 131 and a second oil passage hole 132 are also provided on the sidewalls of the two opposite ends of the third cylinder 13. The sixth cavity 106 communicates with the fourth cavity 104 through the first oil passage hole 131. The seventh cavity 107 communicates with the fifth cavity 105 through the second oil passage hole 132.

[0051] The damping device 100 also includes a bottom valve 16 disposed at the end of the cylinder structure 10. The bottom valve 16 is disposed on the side of the seventh cavity 107 away from the sixth cavity 106. The bottom valve 16 is fixedly connected to the ends of the second cylinder 12 and the third cylinder 13. The bottom valve 16 has a bottom valve return passage 161 connecting the first cavity 101 and the seventh cavity 107. The bottom valve 16 includes a bottom valve return valve plate 1611 disposed on the side facing the seventh cavity 107, which covers the opening of the bottom valve return passage 161 on the side facing the seventh cavity 107. When the oil pressure in the first cavity 101 is greater than the oil pressure in the seventh cavity 107, the bottom valve return valve plate 1611 is opened, and the oil in the first cavity 101 enters the seventh cavity 107 through the bottom valve return passage 161. When the oil pressure in the seventh chamber 107 is greater than the oil pressure in the first chamber 101, the bottom valve return valve plate 1611 is pressed against the bottom valve 16, and the bottom valve return passage 161 is closed by the bottom valve return valve plate 1611.

[0052] When the shock absorber 100 is compressed, the piston rod 151 pushes the piston head 152 to move along the sixth cavity 106 toward the seventh cavity 107. The volume of the sixth cavity 106 increases, and the oil pressure in the sixth cavity 106 decreases. The volume of the seventh cavity 107 decreases, and the oil pressure in the seventh cavity 107 increases. The oil in the seventh cavity 107 enters the fifth cavity 105 through the second oil passage 132. The oil in the fifth cavity 105 enters the regulating valve 40 through the second connecting hole 122. The regulating valve 40 dampens the oil, that is, increases the flow resistance of the oil, thereby providing compression damping for the shock absorber 100. After being damped, the oil flows out of the regulating valve 40 and flows into the first cavity 101. When the pressure of the oil in the first cavity 101 exceeds a threshold, the oil in the first cavity 101 enters the first fluid channel 3121 through the connecting hole 214, pushing the one-way valve plate 33 towards the damping valve body 220. The one-way valve plate 33 is spaced apart from the second abutment part 312, and the oil flows into the first cavity 2131 through the first fluid channel 3121. The oil in the first cavity 2131 flows into the fourth cavity 104 through the second fluid channel 3122 and the third fluid channel 321. The oil in the fourth cavity 104 finally flows into the sixth cavity 106 through the first oil passage 131, thereby replenishing the oil in the sixth cavity 106.

[0053] When the shock absorber 100 recovers or is stretched, the piston rod 151 drives the piston head 152 to move along the seventh cavity 107 toward the sixth cavity 106. The volume of the seventh cavity 107 increases, and the oil pressure in the seventh cavity 107 decreases. The volume of the sixth cavity 106 decreases, and the oil pressure in the sixth cavity 106 increases. The oil in the sixth cavity 106 enters the fourth cavity 104 through the first oil passage 131. The oil in the fourth cavity 104 flows into the first cavity 2131 through the third fluid channel 321 and the second fluid channel 3122. Because of the obstruction by the one-way valve plate 33, the oil cannot flow out of the first cavity 2131 from the first fluid channel 3121. Therefore, the oil in the first cavity 2131 will push the valve core 23 to move away from the end cover 22, forming a damping orifice between the valve core 23 and the end cover 22. The oil in the first cavity 2131 enters the second cavity 2132 after passing through the inlet channel 221, the damping space, and the outlet channel 241 in sequence. When the oil passes through the damping orifice, the flow area is reduced due to the damping orifice, and the flow resistance of the oil increases, thereby providing restoring damping for the shock absorber 100. The oil in the second cavity 2132 flows into the first container 101 through the first sub-flow channel 3231 and the second sub-flow channel 216. When the oil pressure in the first cavity 101 is greater than the opening pressure of the bottom valve return valve plate 1611, the oil pushes open the bottom valve return valve plate 1611, and the oil in the first cavity 101 flows into the seventh cavity 107 through the bottom valve return channel 161, thereby replenishing the oil in the seventh cavity 107.

[0054] Compared to a damping device that has a return flow path from the seventh cavity to the sixth cavity on the piston, the damping device 100 in this embodiment provides a return flow path for the oil by setting a one-way valve body 30 on the damping valve 20 connected to the first connection hole 121. During the compression stroke, the damping device 100 can ensure that all the oil passes through the damping valve 20, thereby improving the accuracy of the damping adjustment of the damping device 100 and thus better adjusting the working performance of the damping device 100.

[0055] In some embodiments, the shock absorber 100 further includes a piston overpressure channel 1521 formed on the piston 15 and a piston overpressure valve plate 1522 disposed on the piston head 152 facing the piston rod 151. The piston overpressure channel 1521 is used to connect the seventh cavity 107 and the sixth cavity 106. The piston overpressure valve plate 1522 covers the opening of the piston overpressure channel 1521 facing the piston rod 151. When the compressive force on the shock absorber 100 exceeds a preset value, the oil in the seventh cavity 107 will push open the piston overpressure valve plate 1522, allowing the oil in the seventh cavity 107 to be released through the piston overpressure channel 1521 into the sixth cavity 106, thus preventing excessive oil pressure from damaging the third cylinder 13. In the shock-absorbing device with a return flow path from the seventh cavity to the sixth cavity in the piston, since the return flow path needs to act as a return flow path for the oil, the stiffness of the valve plate in the return flow path can only be set to a small value; otherwise, it will cause difficulty in oil return, resulting in the shock-absorbing device failing to work properly. In this application, by setting a one-way valve body 30 in the mounting base 21, the one-way valve body 30 provides a return flow path for the oil. Therefore, the shock-absorbing device 100 can set the stiffness of the piston overpressure valve plate 1522 to a larger value, that is, increase the opening pressure of the piston overpressure valve plate 1522, thereby better utilizing the function of the piston overpressure valve plate 1522 in preventing the shock-absorbing device 100 from overloading, and improving the safety and reliability of the shock-absorbing device 100.

[0056] In some embodiments, the bottom valve 16 is further provided with a bottom valve overpressure channel 162 for connecting the seventh cavity 107 and the first cavity 101, and a bottom valve overpressure valve plate 1621 disposed on the side of the bottom valve 16 away from the piston 15. The bottom valve overpressure valve plate 1621 covers the opening of the bottom valve overpressure channel 162 on the side away from the piston 15. When the compressive force on the damping device 100 exceeds a preset value, the oil in the seventh cavity 107 will push open the bottom valve overpressure valve plate 1621, and the oil in the seventh cavity 107 will be depressurized into the first cavity 101 through the bottom valve overpressure channel 162, thereby preventing the third cylinder 13 from being damaged due to excessive oil pressure.

[0057] In some embodiments, the regulating valve 40 is provided with a one-way valve body 30. The regulating valve 40 includes a regulating valve body and a one-way valve body 30. The one-way valve body 30 is sandwiched between the regulating valve body and the mounting base of the regulating valve 40. The structure of the regulating valve 40 may be the same as or similar to that of the damping valve 20. The first cavity 101 is also connected to the fifth cavity 105 through the one-way valve body 30 in the regulating valve 40, that is, the oil in the first cavity 101 can flow into the fifth cavity 105 through the one-way valve body 30 in the regulating valve 40, while the oil in the fifth cavity 105 cannot flow into the first cavity 101 through the second one-way valve. During the compression stroke of the damping device 100, the oil in the seventh cavity 107 enters the regulating valve 40 through the second oil passage 132 and the fifth cavity 105. Because of the stop provided by the one-way valve plate 33 of the one-way valve body 30 in the regulating valve 40, the oil will push open the valve core of the regulating valve 40 and flow out from the damping port of the regulating valve 40 into the first cavity 101. The oil in the first cavity 101 pushes open the one-way valve plate 33 of the one-way valve body 30 in the damping valve 20, and flows sequentially through the first cavity 2131, the second fluid channel 3122, the third fluid channel 321, the fourth cavity 104, and the first oil passage 131, finally flowing into the sixth cavity 106. During the recovery stroke of the shock absorber 100, the oil in the sixth cavity 106 sequentially enters the first cavity 2131 through the first oil passage 131, the fourth cavity 104, the third fluid channel 321, and the second fluid channel 3122. Because of the stop provided by the one-way valve plate 33 of the one-way valve body 30 in the damping valve 20, the oil will push open the valve core 23 of the damping valve 20, flow from the damping port of the damping valve 20 into the second cavity 2132, and then flow into the first chamber 101 through the first sub-flow channel 3231 and the second sub-flow channel 216. The oil in the first chamber 101 pushes open the one-way valve plate 33 of the one-way valve body 30 in the regulating valve 40, and flows through the second connecting hole 122, the fifth chamber 105 and the second oil passage hole 132 in sequence, and finally flows into the seventh chamber 107. In this design, by incorporating a check valve body 30 within the regulating valve 40, the check valve body 30 can provide a return path for the oil during the recovery process of the shock absorber 100. The bottom valve return channel 161 does not need to serve as the oil return path, thus increasing the stiffness of the bottom valve return valve plate 1611. This allows the bottom valve return valve plate 1611 to function as a safety valve during overload recovery of the shock absorber 100, improving the safety and reliability of the shock absorber 100. In some embodiments, multiple damping valves 20 and / or regulating valves 40 can be configured to enhance the damping capacity of the shock absorber 100.

[0058] In some embodiments, the shock absorber 100 further includes a bottom cover 17 and a top cover 18 disposed at opposite ends of the cylinder structure 10. The bottom cover 17 is disposed on the side of the cylinder structure 10 near the bottom valve 16 and is fixedly connected to the first cylinder 11. The bottom cover 17 and the first cylinder 11 can be fixed together by means of screwing, welding, snap-fitting, etc. The bottom cover 17 and the bottom valve 16 are spaced apart and form a connecting cavity communicating with the first cavity 101, and the bottom valve return channel 161 communicates with the connecting cavity. A fork arm 171 is connected to the side of the bottom cover 17 away from the bottom valve 16. The fork arm 171 is used to connect with other components, thereby connecting the shock absorber 100 to the component. The top cover 18 includes a connecting sleeve 181, an end plate 182, a guide sleeve 183, a guide seal 184, and an oil seal 185. The connecting sleeve 181 is fixedly connected to the first cylinder 11, and the connecting sleeve 181 and the first cylinder 11 can be fixed together by means of screwing, welding, snap-fitting, etc. End plate 182 is fixedly connected to the end of connecting sleeve 181 away from the first cylinder body 11. End plate 182 has a through hole for piston rod 151 to extend out. Guide sleeve 183 is disposed on the side of end plate 182 facing the first cylinder body 11, and is fixedly connected to the second cylinder body 12 and the third cylinder body 13 respectively, closing the ends of the second cylinder body 12 and the third cylinder body 13 away from the bottom valve 16. Guide seal 184 is disposed between the inner wall of connecting sleeve 181 and guide sleeve 183. Oil seal 185 is disposed between guide sleeve 183 and end plate 182. Guide sleeve 183 and oil seal 185 each have a through hole for piston rod 151 to extend out. Guide sleeve 183 guides piston rod 151, causing it to extend or retract along the axial direction of cylinder structure 10. The oil seal 185 is used to seal the piston rod 151 to prevent oil from leaking out of the third cavity 103 from the connection between the piston rod 151 and the end plate 182.

[0059] This application also provides a vehicle, which includes the shock absorption device 100 provided in any of the above embodiments. The vehicle can be an electric vehicle, a hybrid electric vehicle, a range-extended electric vehicle, a fossil fuel vehicle, a motorcycle, etc.

[0060] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0061] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A shock absorption device, characterized in that, include: A cylinder block structure, wherein the outer wall of the cylinder block structure is provided with mounting holes; At least one damping valve includes a mounting base and a damping valve body. The mounting base is installed at the mounting hole. The mounting base includes a support portion and a side portion connected to the support portion. The side portion and the support portion form a mounting cavity. The damping valve body is disposed within the mounting cavity. A one-way valve body is disposed within the mounting cavity and sandwiched between the damping valve body and the support portion; At least one regulating valve is connected to the cylinder structure; when the shock absorber is compressed, the one-way valve body opens, and the first cavity of the cylinder structure is connected to the second cavity of the cylinder structure through the one-way valve body and the regulating valve; when the shock absorber is stretched, the one-way valve body closes, and the second cavity is connected to the first cavity through the damping valve body, wherein the first cavity is different from the second cavity.

2. The shock absorption device according to claim 1, characterized in that, The one-way valve body is abutted against the damping valve body.

3. The shock absorption device according to claim 2, characterized in that, The mounting base has a connecting hole that connects the mounting cavity and the first cavity. The one-way valve body includes a valve seat, a one-way valve plate, and an elastic element. The valve seat and the damping valve body form a first cavity. The one-way valve plate and the elastic element are housed in the first cavity. The elastic element is sandwiched between the one-way valve plate and the damping valve body. The one-way valve plate is used to unidirectionally guide through the connecting hole to the first cavity.

4. The shock absorption device according to claim 3, characterized in that, The valve seat includes a valve plate receiving portion and a cylinder body connecting portion connecting the valve plate receiving portion. The valve plate receiving portion is sandwiched between the damping valve body and the support portion. The cylinder body connecting portion passes through the communicating hole and is spaced apart from the support portion.

5. The shock absorption device according to claim 4, characterized in that, The valve plate receiving portion and the damping valve body form the first cavity. The valve plate receiving portion has a first fluid channel connecting the connecting hole and the first cavity. When the one-way valve body is open, the one-way valve plate moves toward the direction close to the damping valve body, and the connecting hole communicates with the first cavity through the first fluid channel. When the one-way valve body is closed, the one-way valve plate covers the first fluid channel and closes the first fluid channel. The cylinder body connecting part has a second fluid channel that connects the second cavity and the first cavity.

6. The shock absorption device according to claim 5, characterized in that, The valve plate receiving portion includes a first abutting portion and a second abutting portion. The first abutting portion is connected to the circumferential edge of the second abutting portion on the side facing the damping valve body. The cylinder connecting portion is disposed on the side of the second abutting portion away from the damping valve body. The first abutting part, the second abutting part, and the damping valve body together form the first cavity. The second abutting part has a first fluid channel and a second fluid channel spaced apart from the first fluid channel. The first fluid channel is located on the outer periphery of the second fluid channel. The cylinder connecting part has a third fluid channel connecting the second fluid channel and the second cavity. The one-way valve plate has a through hole corresponding to the position of the second fluid channel. When the one-way valve body is closed, the one-way valve plate abuts against the second abutment portion, and the one-way valve plate seals the first fluid passage; when the one-way valve body is open, the one-way valve plate and the second abutment portion are spaced apart.

7. The shock absorption device according to claim 5, characterized in that, The valve plate receiving portion is provided with a first protrusion that supports the one-way valve plate.

8. The shock absorption device according to claim 4, characterized in that, The valve plate receiving portion has a second protrusion protruding on the side facing the damping valve body, and the second protrusion is abutting against the damping valve body.

9. The shock absorption device according to claim 4, characterized in that, A second cavity is formed between the damping valve body and the mounting base. The second cavity communicates with the first cavity. When the damping valve body is opened, the first cavity communicates with the second cavity.

10. The shock absorption device according to claim 9, characterized in that, The valve plate receiving portion is spaced apart from the side portion and forms a first sub-flow channel that connects to the second cavity. The support portion has a plurality of spaced protrusions on the side facing the valve plate receiving portion. The valve plate receiving portion abuts against the protrusions. A second sub-flow channel that connects the first cavity and the first sub-flow channel is formed between two adjacent protrusions.

11. The shock absorption device according to claim 9, characterized in that, The damping valve body includes an end cap, a valve core, and a valve sleeve. The end cap abuts against the one-way valve body, and the valve sleeve and the end cap enclose a damping space. The end cap has an inlet channel communicating with the first cavity, and the valve sleeve has an outlet channel communicating with the second cavity. The valve core is disposed within the damping space. When the damping valve body is open, the valve core and the end cap are spaced apart, and the first cavity communicates with the second cavity through the inlet channel and the outlet channel. When the damping valve body is closed, the valve core abuts against the end cap and closes the inlet channel and / or the outlet channel.

12. A vehicle, characterized in that, Includes the shock absorption device as described in any one of claims 1-11.

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