Damping device and vehicle

Abstract

The embodiment of the invention provides a damping device and a vehicle. The vehicle comprises the damping device. The damping device comprises a cylinder body structure, at least one damping valve and a one-way valve body. The cylinder body 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 and comprises a supporting part and a side part connected to the supporting part, a mounting cavity is formed by the side part and the supporting part, 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 part. According to the damping device and the vehicle provided by the embodiment of the invention, the one-way valve main body is clamped between the damping valve main body and the supporting part, and the one-way valve main body is fixed through the damping valve main body and the supporting part, so that the one-way valve main body is prevented from generating lateral acting force on the cylinder body structure, 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 Art

[0002] In the existing shock absorber, the throttle valve fixes the one-way valve by pressing the one-way valve against the side wall of the cylinder. However, this causes the one-way valve to generate a lateral preload force on the cylinder, and during the operation of the shock absorber, the flow of oil will generate pressure on the valve plate of the one-way valve, and this pressure will act on the cylinder through the one-way valve, causing the cylinder to be easily squeezed and deformed by the one-way valve, and even causing damage to the shock absorber. Summary of the invention

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

[0004] In a first aspect, an embodiment of the present application provides a shock absorbing device, the shock absorbing device comprising a cylinder structure, at least one damping valve and a one-way valve body. The outer wall of 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 first seat hole, the mounting seat comprises 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 disposed in the mounting cavity. The one-way valve body is disposed in the mounting cavity and is sandwiched between the damping valve body and the support portion.

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

[0006] In some embodiments, when the one-way valve body is opened, the first chamber of the cylinder structure is connected to the second chamber of the cylinder structure through the one-way valve body; when the one-way valve body is closed, the second chamber is connected to the first chamber through the damping valve body, wherein the first chamber is different from the second chamber.

[0007] In some embodiments, the mounting seat is provided with a connecting hole connecting the mounting cavity and the first holding cavity, the one-way valve body includes a valve seat, a one-way valve plate and an elastic member, the valve seat and the damping valve body form a first cavity, the one-way valve plate and the elastic member are accommodated in the first cavity, the elastic member is clamped between the one-way valve plate and the damping valve body, and the one-way valve plate is used to conduct one-way electricity to the first cavity through the connecting hole.

[0008] In some embodiments, the valve seat includes a valve plate accommodating portion and a cylinder connecting portion connected to the valve plate accommodating portion, the valve plate accommodating portion is clamped between the damping valve body and the support portion, and the cylinder connecting portion is passed through the connecting hole and is spaced apart from the support portion.

[0009] In some embodiments, the valve disc accommodating portion and the damping valve body form the first cavity, and the valve disc accommodating portion is provided with a first fluid channel connecting the connecting hole and the first cavity; when the one-way valve body is opened, the one-way valve disc moves toward the direction close to the damping valve body, and the connecting hole is connected with the first cavity through the first fluid channel; when the one-way valve body is closed, the one-way valve disc cover is arranged at the first fluid channel and closes the first fluid channel; the cylinder body connecting portion is provided with a second fluid channel connecting the second cavity and the first cavity.

[0010] In some embodiments, the valve plate accommodating 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, and the cylinder body connecting portion is arranged 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 enclose the first cavity, the second abutting portion is provided with a first fluid channel connected to the first cavity and a second fluid channel spaced from the first fluid channel, the first fluid channel is arranged on the outer peripheral side of the second fluid channel, and the cylinder body connecting portion is provided with a third fluid channel connecting the second fluid channel and the second cavity; the one-way valve plate is provided with a through hole at a position corresponding to 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 opened, the one-way valve plate and the second abutting portion are spaced apart.

[0011] In some embodiments, the valve disc accommodating portion is provided with a first protrusion for supporting the one-way valve disc.

[0012] In some embodiments, a second protrusion is protruded from one side of the valve sheet accommodating portion toward the damping valve body, and the second protrusion is disposed in abutment with the damping valve body.

[0013] In some embodiments, a second cavity is formed between the damping valve body and the mounting seat, the second cavity is communicated with the first cavity, and the first cavity is communicated with the second cavity when the damping valve body is opened.

[0014] In some embodiments, the valve sheet accommodating portion and the side portion are spaced apart to form a first sub-channel connected to the second cavity, and a plurality of spaced-apart bosses are protruding from the support portion toward one side of the valve sheet accommodating portion, the valve sheet accommodating portion is abutted against the bosses, and a second sub-channel connecting the first cavity and the first sub-channel is formed between two adjacent bosses.

[0015] In some embodiments, the damping valve body includes an end cover, a valve core and a valve sleeve, the end cover abuts against the one-way valve body, the valve sleeve and the end cover enclose a damping space, the end cover is provided with a liquid inlet channel connected to the first cavity, the valve sleeve is provided with a liquid outlet channel connected to the second cavity, the valve core is arranged in the damping space, when the damping valve body is opened, the valve core moves in a direction away from the one-way valve body, and the first cavity is connected with the second cavity through the liquid inlet channel; when the damping valve body is closed, the valve core abuts against the end cover and closes the liquid inlet channel and / or the liquid outlet channel.

[0016] In a second aspect, an embodiment of the present application provides a vehicle, comprising the shock absorbing device described above.

[0017] The shock absorbing device and vehicle provided in the embodiments of the present application 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 through 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 absorbing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a schematic diagram of the structure of the shock absorbing device provided in an embodiment of the present application.

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

[0021] Figure 3 It is a structural schematic diagram of the mounting base provided in an embodiment of the present application at a viewing angle.

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

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

[0024] Figure 6 It is a schematic structural diagram of the valve seat provided in an embodiment of the present application at one viewing angle.

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

[0026] Description of main reference numerals: shock absorbing device 100; cylinder structure 10; first cylinder 11; mounting hole 111; first cavity 101; second cylinder 12; second cavity 102; fourth cavity 104; fifth cavity 105; first connecting hole 121; first joint 1211; second connecting hole 122; second joint 1221; third cylinder 13; third cavity 103; sixth cavity 106; seventh cavity 107; first oil hole 131; second oil hole 132; 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 seat-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 cover-22; liquid inlet channel-221; valve core-23; valve sleeve-24; liquid outlet channel-241; valve core elastic member-25; pressure cover-26; coil slot-261; housing-27; wire Ring-28; one-way valve body-30; valve seat-300; valve plate accommodating portion-31; first abutting portion-311; second protrusion-3111; second abutting portion-312; first fluid channel-3121; second fluid channel-3122; first protrusion-3123; connecting flow channel-313; first sub-flow channel-3231; cylinder body connecting portion-32; third fluid channel-321; connecting sealing groove-3212; connecting sealing member-3213; one-way valve plate-33; elastic member-34; regulating valve-40.

[0027] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0028] 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 described embodiments are only part of the embodiments in the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0029] Reference to "embodiment" or "implementation" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment or implementation may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

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

[0031] Please also read Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 1 is a schematic structural diagram of a shock absorbing device 100 provided in an embodiment of the present application; Figure 2 yes Figure 1 The enlarged view of point I in the middle; Figure 3 is a schematic structural diagram of a mounting base 21 provided in an embodiment of the present application at a viewing angle; Figure 4: is a schematic diagram of the structure of the mounting seat 21 provided in an embodiment of the present application from another perspective. The embodiment of the present 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 seat 21 and a damping valve body 220. The mounting seat 21 is installed at the mounting hole 111. The mounting seat 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 arranged in the mounting cavity 213. The one-way valve body 30 is arranged in the mounting cavity 213 and is sandwiched between the damping valve body 220 and the support portion 211. In the embodiment of the present application, the one-way valve body 30 is sandwiched between the damping valve body 220 and the support portion 211, and the one-way valve body 30 is fixed by the damping valve body 220 and the support portion 211, thereby preventing the one-way valve body 30 from generating a lateral force on the cylinder structure 10, thereby improving the reliability of the shock absorbing device 100. The one-way valve body 30 is arranged in contact with the damping valve body 220.

[0032] When the one-way valve body 30 is opened, the first cavity 101 of the cylinder structure 10 is connected with the second cavity 102 of the cylinder structure 10 through the one-way valve body 30, that is, the oil in the first cavity 101 can flow into the second cavity 102 through the one-way valve body 30, while the oil in the second cavity 102 cannot flow into the first cavity 101 through the one-way valve body 30. When the one-way valve body 30 is closed, the second cavity 102 is connected with the first cavity 101 through the damping valve body 220. Among them, 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 provided on the side wall of the first cylinder 11. A cavity is provided in the first cylinder 11, and the mounting hole 111 connects the cavity with the outside. The mounting seat 21 is sealed and connected to the mounting hole 111. The second cylinder 12 is arranged in the first cylinder 11, and a first cavity 101 is formed between the second cylinder 12 and the first cylinder 11. A cavity is provided in the second cylinder 12. The third cylinder 13 is arranged in the second cylinder 12, and a second cavity 102 is formed between the second cylinder 12 and the third cylinder 13. A third cavity 103 is provided in the third cylinder 13. Among them, a connecting hole 214 connecting the mounting cavity 213 and the first cavity 101 is provided on the side of the support portion 211 facing the cylinder structure 10.

[0034] See also Figure 2 , Figure 5 , Figure 6 and Figure 7 , Figure 5 is a structural schematic diagram of a one-way valve body 30 provided in an embodiment of the present application; Figure 6 is a structural schematic diagram of a valve seat 300 provided in an embodiment of the present application at a viewing angle; Figure 7 3 is a schematic diagram of the structure of the valve seat 300 provided in an embodiment of the present 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 accommodated in 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 for one-way communication with the first cavity 2131 through the connecting hole 214.

[0035] The valve seat 300 includes a valve plate accommodating portion 31 and a cylinder connecting portion 32 connected to the valve plate accommodating portion 31. The valve plate accommodating portion 31 is sandwiched between the damping valve body 220 and the supporting portion 211. The cylinder 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 accommodating cavity 102 is provided on the side wall of the second cylinder 12. One end of the cylinder connecting portion 32 away from the valve plate accommodating portion 31 is communicated with the second accommodating cavity 102 through the first connecting hole 121. In some embodiments, a first joint 1211 is provided on the side wall of the second cylinder 12 at a position corresponding to the first connecting hole 121. One end of the cylinder connecting portion 32 away from the valve plate accommodating portion 31 is sealedly connected to the first joint 1211. A connecting sealing groove 3212 is provided on one end of the cylinder connecting portion 32 away from the valve plate accommodating portion 31. The first joint 1211 covers the connecting sealing groove 3212. A connection seal 3213 is provided in the connection seal groove 3212 . The connection seal 3213 is located between the inner wall of the first joint 1211 and the outer wall of the cylinder body connection part 32 . The connection seal 3213 is used to improve the connection sealing performance between the first joint 1211 and the cylinder body connection part 32 .

[0036] The valve disc accommodating portion 31 and the damping valve body 220 form a first cavity 2131. The valve disc accommodating portion 31 is provided with a first fluid passage 3121 communicating with the first cavity 2131 and the communicating hole 214. When the one-way valve body 30 is opened, the one-way valve disc 33 moves toward the direction close to the damping valve body 220, and the communicating hole 214 communicates with the first cavity 2131 through the first fluid passage 3121. When the one-way valve body 30 is closed, the one-way valve disc 33 covers the first fluid passage 3121 and closes the first fluid passage 3121.

[0037] The valve plate accommodating 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 is extended 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 is extended in the direction away from the damping valve body 220. The first abutting portion 311 and the cylinder connecting portion 32 are configured as a cylindrical structure, the diameter of the first abutting portion 311 is larger than the diameter of the cylinder connecting portion 32, and one end of the first abutting portion 311 close to the cylinder connecting portion 32 and one end of the cylinder connecting portion 32 close to the first abutting portion 311 are connected together through the second abutting portion 312. In some embodiments, the second abutting portion 312 may also be a hollow structure in the shape of a cone, with the end of the second abutting portion 312 having a smaller diameter connected to the cylinder connecting portion 32 , and the end of the second abutting portion 312 having a larger diameter connected to the first abutting portion 311 .

[0038] The first abutting portion 311, the second abutting portion 312 and the damping valve body 220 enclose a first cavity 2131. The second abutting portion 312 is provided with 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 arranged on the outer peripheral side of the second fluid channel 3122 and is spaced apart from the second fluid channel 3122. The cylinder connecting portion 32 is provided with a third fluid channel 321 connecting the second cavity 102 and the second fluid channel 3122. The one-way valve plate 33 is provided on the side of the second abutting portion 312 facing the damping valve body 220. The one-way valve plate 33 is provided with a through hole at a position corresponding to the second fluid channel 3122. The one-way valve plate 33 is constructed as an annular plate. The diameter of the one-way valve disc 33 may correspond to the inner diameter of the first abutting portion 311. When the one-way valve disc 33 is installed in the valve disc accommodating portion 31, the inner wall of the first abutting portion 311 may position the one-way valve disc 33. When the one-way valve body 30 is closed, the one-way valve disc 33 abuts against the second abutting portion 312, and the one-way valve disc 33 covers the first fluid channel 3121. The opening of the first fluid channel 3121 toward the damping valve body 220 is closed by the one-way valve disc 33, and the oil cannot flow through the first fluid channel 3121. When the one-way valve body 30 is opened, the one-way valve disc 33 is spaced apart from the second abutting portion 312, and the opening of the first fluid channel 3121 toward the damping valve body 220 is in an open state, and the oil can flow through the first fluid channel 3121.

[0039] Among them, after the oil in the first cavity 101 flows from the connecting hole 214 into the first fluid channel 3121 and contacts the one-way valve disc 33, the pressure of the oil on the one-way valve disc 33 is opposite to the direction of the elastic force of the elastic member 34 on the one-way valve disc 33. When the pressure of the oil on the one-way valve disc 33 is greater than the elastic force of the elastic member 34 on the one-way valve disc 33, the oil pushes the one-way valve disc 33 toward the damping valve body 220, the first fluid channel 3121 is opened, the oil flows into the first cavity 2131 through the first fluid channel 3121, and then flows into the second cavity 102 through the second fluid channel 3122 and the third fluid channel 321, so that 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 from 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 the elastic force press the one-way valve plate 33 against the second abutting portion 312. Therefore, the one-way valve plate 33 closes 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] It is understandable that the elastic force of the elastic member 34 acting on the one-way valve disc 33 needs to be greater than a threshold value, so that when the shock absorbing device 100 is subjected to vibration or other external influences, the one-way valve disc 33 keeps covering the first fluid channel 3121, so that the one-way valve body 30 can better play the role of one-way conduction. In addition, when the pressure of the oil in the second chamber 102 is greater than the pressure of the first chamber 101, since the second fluid channel 3122 and the third fluid channel 321 are passed between the first chamber 2131 and the second chamber 102, the pressure of the oil in the first chamber 2131 on the one-way valve disc 33 is greater than the pressure of the oil in the first fluid channel 3121 on the one-way valve disc 33, so the one-way valve disc 33 is subjected to the pressure of the oil in addition to the elastic force of the elastic member 34, and the elastic force and the oil pressure act in the same direction, both in the direction away from the damping valve body 220. In the embodiment of the present application, the first abutment portion 311 and the second abutment portion 312 are clamped between the damping valve body 220 and the support portion 211, so that the elastic force of the elastic member 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, and 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 body 12, thereby avoiding the second cylinder body 12 being squeezed and deformed by the one-way valve body 30, thereby improving the reliability of the shock absorbing device 100.

[0041] Please also read Figure 2 and Figure 7, a first protrusion 3123 supporting the one-way valve disc 33 is convexly provided on the side of the second abutting portion 312 facing the first abutting portion 311. The one-way valve disc 33 is abutted by the elastic member 34 on the side of the first protrusion 3123 away from the second abutting portion 312. Exemplarily, the first protrusion 3123 can be constructed as two annular protrusions. The opening of the first fluid channel 3121 close to the first abutting portion 311 is located between the two annular protrusions. After the one-way valve disc 33 abuts against the two annular protrusions, the one-way valve disc 33 and the surface of the two annular protrusions on the side away from the second abutting portion 312 are in a sealed state, and the first fluid channel 3121 is sealed by the one-way valve disc 33. When the one-way valve disc 33 is separated from the two annular protrusions, the first fluid channel 3121 is opened. Among them, the area of ​​the surface of the first protrusion 3123 on the side away from the second abutting portion 312 is smaller than the area of ​​the surface of the second abutting portion 312 on the side facing the damping valve body 220. After the first protrusion 3123 is provided in this embodiment, the contact area between the second abutting portion 312 and the one-way valve plate 33 can be reduced, thereby reducing the processing area on the second abutting portion 312, and reducing the processing difficulty and processing 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 is convexly disposed at one end of the first abutting portion 311 away from the second abutting portion 312. The second protrusion 3111 is arranged in close contact with the damping valve body 220, and a sealing state is established between the end of the first abutting portion 311 away from the second abutting portion 312 and the damping valve body 220. The second protrusion 3111 can reduce the contact area between the first abutting portion 311 and the damping valve body 220, thereby reducing the processing area on the first abutting portion 311, and reducing the processing difficulty and processing cost of the first abutting portion 311.

[0043] Please also read Figure 2 , Figure 3 and Figure 6A second cavity 2132 is formed between the damping valve body 220 and the mounting seat 21. The second cavity 2132 is in communication with the first cavity 101. The first cavity 2131 is in communication with the second cavity 2132 when the damping valve body 220 is opened. A connecting flow channel 313 connecting the first cavity 101 and the second cavity 2132 is formed between the valve plate accommodating portion 31 and the mounting seat 21. The connecting flow channel 313 includes a first sub-flow channel 3231 and a second sub-flow channel 216. Specifically, the valve plate accommodating portion 31 and the side portion 212 are arranged at intervals, and a first sub-flow channel 3231 connecting the second cavity 2132 is formed. A plurality of bosses 215 are arranged on one side of the support portion 211 facing the valve plate accommodating portion 31, and the plurality of bosses 215 are arranged at intervals along the circumferential direction of the support portion 211. A second sub-flow channel 216 connecting the first cavity 101 and the first sub-flow channel 3231 is formed between two adjacent bosses 215. In some embodiments, the connecting flow channel 313 may also be configured as a groove or channel opened on the side portion 212 and the support portion 211, or the connecting flow channel 313 may also be configured as a groove or channel opened on the first abutting portion 311 and the second abutting portion 312, or the connecting flow channel 313 may also be configured as a groove or channel opened in a portion on the mounting seat 21 and in another portion on the valve plate accommodating portion 31. In some embodiments, the first fluid channel 3121 may be communicated with the connecting flow channel 313, that is, the first fluid channel 3121 is connected to the first sub-flow channel 3231 or the second sub-flow channel 216. In some embodiments, the first fluid channel 3121 may also be independently provided with the connecting flow channel 313, that is, the first fluid channel 3121 and the connecting flow channel 313 are respectively and independently communicated with the first cavity 101.

[0044] The damping valve body 220 includes an end cover 22, a valve core 23, a valve sleeve 24 and a valve core elastic member 25. The end cover 22 is arranged between the valve sleeve 24 and the one-way valve body 30, and the valve plate accommodating portion 31 is arranged in contact with the end cover 22. The valve sleeve 24 and the end cover 22 enclose a damping space for accommodating the valve core 23 and the valve core elastic member 25. The valve core 23 is located between the valve core elastic member 25 and the end cover 22. The valve core elastic member 25 abuts against the side of the valve core 23 away from the end cover 22. The end cover 22 is provided with a liquid inlet channel 221 connected to the first cavity 2131. The valve sleeve 24 is provided with a liquid outlet channel 241 connected to the second cavity 2132. Exemplarily, the liquid outlet channel 241 is opened on the side wall of the valve sleeve 24, and 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 from the liquid outlet channel 241, the direction of the acting pressure of the oil 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 opened, the valve core 23 is spaced apart from the end cover 22, and the first cavity 2131 is connected to the second cavity 2132 through the liquid inlet channel 221 and the liquid outlet channel 241. When the damping valve body 220 is closed, the valve core 23 abuts against the end cover 22 and closes the liquid inlet channel 221 and / or the liquid outlet channel 241. When the damping valve body 220 is closed, the valve core 23 can close the liquid inlet channel 221 and the liquid outlet channel 241 at the same time, or close one of the liquid inlet channel 221 and the liquid outlet channel 241.

[0046] Specifically, after the oil in the second chamber 102 enters the first chamber 2131 through the third fluid channel 321 and the second fluid channel 3122, the pressure of the oil on the valve core 23 and the elastic force of the valve core elastic member 25 on the valve core 23 are opposite in direction. When the pressure of the oil on the valve core 23 is greater than the elastic force of the valve core elastic member 25 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, and a gap is formed between the valve core 23 and the end cover 22, that is, a damping port for damping the oil is formed between the valve core 23 and the end cover 22, and the flow resistance of the oil increases. The damping port is connected with the liquid outlet channel 241, and the oil will enter the damping port through the liquid inlet channel 221, and flow into the second chamber 2132 through the liquid outlet channel 241. After the oil flows into the second chamber 2132, it flows into the first chamber 101 through the connecting flow channel 313. When the pressure of the oil on the valve core 23 is less than the elastic force of the valve core elastic member 25 on the valve core 23 , the damping valve body 220 is closed, the valve core 23 abuts against the end cover 22 , and the liquid inlet channel 221 is closed.

[0047] Exemplarily, the damping valve 20 can be configured as a solenoid valve. The damping valve 20 also includes a gland 26, a shell 27 and a coil 28. The shell 27 is arranged at one end of the side portion 212 away from the support portion 211. The shell 27 and the side portion 212 can be fixedly connected together by screwing, welding, clamping, etc. The shell 27 and the side portion 212 are also sealed by a seal. The gland 26 is arranged between the shell 27 and the mounting seat 21. One end of the gland 26 abuts against the shell 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 cover 22. The valve core 23 is movable in the valve sleeve 24. The outer wall of the gland 26 is fitted with 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 cover 26 facing away from the valve sleeve 24, and the coil 28 is arranged in the coil groove 261. By controlling the current of the coil 28, the clamping force between the valve core 23 and the end cover 22 can be controlled, thereby adjusting the size of the damping port between the valve core 23 and the end cover 22.

[0048] Please also read Figure 1 and Figure 2The shock absorbing device 100 also includes a partition 14 and a piston 15. The partition 14 is arranged between the second cylinder body 12 and the third cylinder body 13. The second volume chamber 102 is divided into a fourth volume chamber 104 and a fifth volume chamber 105 by the partition 14. Among them, the partition 14 includes a partition body 141 and a partition seal 142. The partition body 141 is sleeved on the outer wall of the third cylinder body 13, and the partition seal 142 is arranged between the partition body 141 and the third cylinder body 13. A positioning hole is opened on the second cylinder body 12, and the partition body 141 extends from the positioning hole on the side away from the third cylinder body 13, and is sealed and connected with the hole 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. A second connecting hole 122 connected to the fifth cavity 105 is also provided on the second cylinder body 12. The shock absorbing 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 damp 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 joint 1221 is provided on the side wall of the second cylinder body 12 at a position corresponding to the second connecting hole 122, and the regulating valve 40 is sealed and connected to the second joint 1221.

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

[0051] The shock absorbing device 100 further includes a bottom valve 16 disposed at the end of the cylinder structure 10. The bottom valve 16 is disposed at a side of the seventh chamber 107 away from the sixth chamber 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 is provided with a bottom valve return channel 161 connecting the first chamber 101 and the seventh chamber 107. The bottom valve 16 includes a bottom valve return valve plate 1611 disposed at a side facing the seventh chamber 107, and the bottom valve return valve plate 1611 covers the opening of the bottom valve return channel 161 facing the seventh chamber 107. When the oil pressure in the first chamber 101 is greater than the oil pressure in the seventh chamber 107, the bottom valve return valve plate 1611 is flushed open, and the oil in the first chamber 101 enters the seventh chamber 107 through the bottom valve return channel 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 disc 1611 is pressed against the bottom valve 16 , and the bottom valve return channel 161 is closed by the bottom valve return valve disc 1611 .

[0052] When the shock absorber 100 is compressed, the piston rod 151 pushes the piston head 152 to move from the sixth chamber 106 to the seventh chamber 107, the volume of the sixth chamber 106 increases, the oil pressure in the sixth chamber 106 decreases, the volume of the seventh chamber 107 decreases, and the oil pressure in the seventh chamber 107 increases. The oil in the seventh chamber 107 enters the fifth chamber 105 through the second oil hole 132, and the oil in the fifth chamber 105 enters the regulating valve 40 through the second connecting hole 122. The regulating valve 40 damps the oil, that is, increases the flow resistance of the oil, thereby providing compression damping for the shock absorber 100. After the damping effect, the oil flows out of the regulating valve 40 and flows into the first chamber 101. When the pressure of the oil in the first cavity 101 is greater than a threshold value, the oil in the first cavity 101 enters the first fluid channel 3121 from the connecting hole 214, and pushes the one-way valve plate 33 toward the direction of the damping valve body 220. The one-way valve plate 33 is spaced from the second abutting portion 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 hole 131, thereby replenishing the oil in the sixth cavity 106.

[0053] When the shock absorbing device 100 is restored or stretched, the piston rod 151 drives the piston head 152 to move from the seventh chamber 107 to the sixth chamber 106, the volume of the seventh chamber 107 increases, the oil pressure in the seventh chamber 107 decreases, the volume of the sixth chamber 106 decreases, and the oil pressure in the sixth chamber 106 increases. The oil in the sixth chamber 106 enters the fourth chamber 104 through the first oil hole 131, and the oil in the fourth chamber 104 flows into the first cavity 2131 through the third fluid channel 321 and the second fluid channel 3122. Due to the stop of 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. A damping port is formed between the valve core 23 and the end cover 22. The oil in the first cavity 2131 passes through the liquid inlet channel 221, the damping space and the liquid outlet channel 241 in sequence and then enters the second cavity 2132. When the oil passes through the damping port, the flow area is reduced due to the damping port, and the flow resistance of the oil becomes larger, thereby providing restoring damping for the shock absorbing device 100. The oil in the second cavity 2132 flows into the first volume 101 through the first sub-channel 3231 and the second sub-channel 216. When the oil pressure in the first chamber 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 chamber 101 flows into the seventh chamber 107 through the bottom valve return channel 161, thereby replenishing the oil in the seventh chamber 107.

[0054] Compared with a shock absorbing device in which a reflux passage from the seventh chamber to the sixth chamber is arranged on the piston, the shock absorbing device 100 in the embodiment of the present application provides a reflux passage for the oil by arranging a one-way valve body 30 on the damping valve 20 connected to the first connecting hole 121. During the compression stroke of the shock absorbing device 100, all the oil can pass through the damping of the damping valve 20, thereby improving the accuracy of the damping adjustment of the shock absorbing device 100 and better adjusting the working performance of the shock absorbing device 100.

[0055] In some embodiments, the shock absorbing device 100 further includes a piston overpressure channel 1521 provided on the piston 15 and a piston overpressure valve plate 1522 provided on the side of the piston head 152 facing the piston rod 151. The piston overpressure channel 1521 is used to connect the seventh volume chamber 107 and the sixth volume chamber 106. The piston overpressure valve plate 1522 covers the opening of the piston overpressure channel 1521 on the side facing the piston rod 151. When the compression force applied to the shock absorbing device 100 exceeds a preset value, the oil in the seventh volume chamber 107 will flush the piston overpressure valve plate 1522, so that the oil in the seventh volume chamber 107 is released into the sixth volume chamber 106 through the piston overpressure channel 1521, thereby preventing the third cylinder body 13 from being damaged due to excessive oil pressure. Among them, in the shock absorbing device in which a reflux passage from the seventh chamber to the sixth chamber is set in the piston, since the reflux passage needs to serve as a reflux passage for the oil, the stiffness of the valve plate on the reflux passage can only be set to a relatively small value, otherwise it will cause difficulty in oil reflux, resulting in the shock absorbing device being unable to work normally. In the present application, by setting a one-way valve body 30 in the mounting seat 21, the one-way valve body 30 provides a reflux passage for the oil, so the shock absorbing device 100 can set the stiffness of the piston overpressure valve plate 1522 to a relatively large value, that is, increase the opening pressure of the piston overpressure valve plate 1522, so as to better play the role of the piston overpressure valve plate 1522 in avoiding overloading of the shock absorbing device 100, and improve 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 volume chamber 107 and the first volume chamber 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 away from the piston 15. When the compression force applied to the shock absorber 100 exceeds a preset value, the oil in the seventh volume chamber 107 will flush the bottom valve overpressure valve plate 1621, and the oil in the seventh volume chamber 107 will be released into the first volume chamber 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, a check valve body 30 is provided in the regulating valve 40. The regulating valve 40 includes a regulating valve body and a check valve body 30. The check valve body 30 is sandwiched between the regulating valve body and the mounting seat of the regulating valve 40. Among them, the structure of the regulating valve 40 can be the same as or similar to the damping valve 20. The first volume 101 is also connected to the fifth volume 105 through the check valve body 30 in the regulating valve 40, that is, the oil in the first volume 101 can flow into the fifth volume 105 through the check valve body 30 in the regulating valve 40, while the oil in the fifth volume 105 cannot flow into the first volume 101 through the second check valve. In the compression stroke of the shock absorber 100, the oil in the seventh volume 107 enters the regulating valve 40 through the second oil hole 132 and the fifth volume 105. Since the oil is stopped by the one-way valve disc 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 disc 33 of the one-way valve body 30 in the damping valve 20, and passes through the first cavity 2131, the second fluid channel 3122, the third fluid channel 321, the fourth cavity 104, the first oil hole 131 in sequence, and finally flows into the sixth cavity 106. In the recovery stroke of the shock absorber 100, the oil in the sixth cavity 106 passes through the first oil hole 131, the fourth cavity 104, the third fluid channel 321 and the second fluid channel 3122 in sequence and enters the first cavity 2131. As the oil is stopped by the one-way valve disc 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 into the second cavity 2132 from the damping port of the damping valve 20, and flow into the first cavity 101 through the first sub-flow channel 3231 and the second sub-flow channel 216. The oil in the first cavity 101 pushes open the one-way valve disc 33 of the one-way valve body 30 in the regulating valve 40, and passes through the second connecting hole 122, the fifth cavity 105 and the second oil-passing hole 132 in sequence, and finally flows into the seventh cavity 107. Among them, after the one-way valve body 30 is set in the regulating valve 40, the one-way valve body 30 in the regulating valve 40 can provide a reflux path for the oil during the recovery process of the shock absorber 100, and the bottom valve reflux channel 161 does not need to serve as a reflux path for the oil, so the stiffness of the bottom valve reflux valve plate 1611 can be increased, so that the bottom valve reflux valve plate 1611 can be used as a safety valve plate during the recovery overload of the shock absorber 100, thereby improving the safety and reliability of the shock absorber 100. In some embodiments, the damping valve 20 and / or the regulating valve 40 can be set in multiple numbers to improve the shock absorption capacity of the shock absorber 100.

[0058] In some embodiments, the shock absorbing device 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 a side of the cylinder structure 10 close to the bottom valve 16 and is fixedly connected to the first cylinder body 11. The bottom cover 17 and the first cylinder body 11 can be fixed together by means of screw connection, welding, clamping, etc. The bottom cover 17 and the bottom valve 16 are arranged at intervals to form a connecting cavity connected to the first cavity 101, and the bottom valve reflux channel 161 is connected to the connecting cavity. A fork arm 171 is connected to the side of the bottom cover 17 away from the bottom valve 16, and the fork arm 171 is used to connect with other components, so as to connect the shock absorbing device 100 with 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 body 11, and the connecting sleeve 181 and the first cylinder body 11 can be fixed together by means of screw connection, welding, clamping, etc. The end plate 182 is fixedly connected to the end of the connecting sleeve 181 away from the first cylinder body 11. The end plate 182 is provided with a through hole for the piston rod 151 to extend out. The guide sleeve 183 is arranged on the side of the 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, and closes the end of the second cylinder body 12 and the third cylinder body 13 away from the bottom valve 16. The guide seal 184 is arranged between the inner wall of the connecting sleeve 181 and the guide sleeve 183. The oil seal 185 is arranged between the guide sleeve 183 and the end plate 182. The guide sleeve 183 and the oil seal 185 are respectively provided with a through hole for the piston rod 151 to extend out. The guide sleeve 183 is used to guide the piston rod 151 so that it extends or retracts along the axial direction of the 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] The embodiment of the present application also provides a vehicle, which includes the shock absorbing device 100 provided by any of the above embodiments. The vehicle can be an electric vehicle, a hybrid vehicle, an extended-range electric vehicle, a fossil fuel vehicle, a motorcycle, etc.

[0060] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0061] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A shock absorbing device, characterized in that: include: A cylinder structure, wherein an outer wall of the cylinder structure is provided with a mounting hole; at least one damping valve, comprising a mounting seat and a damping valve body, wherein 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 disposed in the mounting cavity; A one-way valve body is disposed in the installation cavity and sandwiched between the damping valve body and the support portion.

2. The shock absorbing device according to claim 1, characterized in that: The one-way valve body is disposed in contact with the damping valve body.

3. The shock absorbing device according to claim 1, characterized in that: When the one-way valve body is opened, the first chamber of the cylinder structure is connected to the second chamber of the cylinder structure through the one-way valve body; when the one-way valve body is closed, the second chamber is connected to the first chamber through the damping valve body, wherein the first chamber is different from the second chamber.

4. The shock absorbing device according to claim 3, characterized in that: The mounting seat is provided with a connecting hole connecting the mounting cavity and the first receiving cavity, the one-way valve body includes a valve seat, a one-way valve plate and an elastic member, the valve seat and the damping valve body form a first cavity, the one-way valve plate and the elastic member are accommodated in the first cavity, the elastic member is clamped between the one-way valve plate and the damping valve body, and the one-way valve plate is used to conduct one-way flow to the first cavity through the connecting hole.

5. The shock absorbing device according to claim 4, characterized in that: The valve seat includes a valve plate accommodating portion and a cylinder connecting portion connected to the valve plate accommodating portion, the valve plate accommodating portion is sandwiched between the damping valve body and the supporting portion, and the cylinder connecting portion is penetrated into the connecting hole and spaced apart from the supporting portion.

6. The shock absorbing device according to claim 5, characterized in that: The valve disc accommodating portion and the damping valve body form the first cavity, and the valve disc accommodating portion is provided with a first fluid channel communicating with the communicating hole and the first cavity. When the one-way valve body is opened, the one-way valve disc moves toward the direction close to the damping valve body, and the communicating hole is communicated with the first cavity through the first fluid channel. When the one-way valve body is closed, the one-way valve disc covers the first fluid channel and closes the first fluid channel. The cylinder connecting portion is provided with a second fluid channel communicating with the second chamber and the first chamber.

7. The shock absorbing device according to claim 6, characterized in that: The valve plate accommodating portion includes a first abutting portion and a second abutting portion, the first abutting portion is connected to a circumferential edge of the second abutting portion on a side facing the damping valve body, and the cylinder connecting portion is arranged on a side of the second abutting portion facing away from the damping valve body; The first abutting portion, the second abutting portion and the damping valve body enclose the first cavity, the second abutting portion is provided with the first fluid channel and a second fluid channel spaced from the first fluid channel, the first fluid channel is arranged on the outer peripheral side of the second fluid channel, the cylinder connecting portion is provided with a third fluid channel connecting the second fluid channel and the second cavity; the one-way valve sheet is provided with a through hole at a position corresponding to the second fluid channel; When the one-way valve body is closed, the one-way valve disc abuts against the second abutting portion, and the one-way valve disc covers the first fluid channel; when the one-way valve body is opened, the one-way valve disc and the second abutting portion are spaced apart.

8. The shock absorbing device according to claim 6, characterized in that: The valve plate accommodating portion is provided with a first protrusion that supports the one-way valve plate.

9. The shock absorbing device according to claim 5, characterized in that: A second protrusion is protruded from one side of the valve sheet accommodating portion toward the damping valve body, and the second protrusion is disposed in contact with the damping valve body.

10. The shock absorbing device according to claim 5, characterized in that: A second cavity is formed between the damping valve body and the mounting seat, the second cavity is communicated with the first cavity, and the first cavity is communicated with the second cavity when the damping valve body is opened.

11. The shock absorbing device according to claim 10, characterized in that: The valve sheet accommodating portion and the side portion are spaced apart, and a first sub-channel connected to the second cavity is formed therebetween. A plurality of spaced-apart bosses are protruded from the support portion on one side facing the valve sheet accommodating portion. The valve sheet accommodating portion is abutted against the bosses, and a second sub-channel connected to the first cavity and the first sub-channel is formed between two adjacent bosses.

12. The shock absorbing device according to claim 10, characterized in that: The damping valve body includes an end cover, a valve core and a valve sleeve. The end cover abuts against the one-way valve body, and the valve sleeve and the end cover enclose a damping space. The end cover is provided with a liquid inlet channel connected to the first cavity, and the valve sleeve is provided with a liquid outlet channel connected to the second cavity. The valve core is arranged in the damping space. When the damping valve body is opened, the valve core and the end cover are spaced apart, and the first cavity is connected to the second cavity through the liquid inlet channel and the liquid outlet channel; when the damping valve body is closed, the valve core abuts against the end cover and closes the liquid inlet channel and / or the liquid outlet channel.

13. A vehicle, characterized in that: Comprising a shock absorbing device as described in any one of claims 1-12.

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