Upper support device of shock absorber, shock absorber and vehicle

Abstract

The present invention discloses an upper support device for a shock absorber, a shock absorber and a vehicle. The upper support device includes: a support seat, a cavity is formed inside the support seat; an inner skeleton, the inner skeleton is arranged in the cavity and divides the cavity into an upper chamber and a lower chamber. An inertia passage communicating the upper chamber and the lower chamber is provided on the inner skeleton. An upper liquid storage chamber, a lower liquid storage chamber and an oil inlet passage are provided inside the inner skeleton. The oil inlet passage has an oil outlet, the upper liquid storage chamber and the lower liquid storage chamber are communicated with the oil outlet, the upper liquid storage chamber is communicated with the upper chamber, the lower liquid storage chamber is communicated with the lower chamber, and the effective oil passage cross-section of the upper liquid storage chamber is larger than that of the lower liquid storage chamber; a valve component, the valve component includes a valve plate located in the oil outlet. The valve plate closes the oil outlet at the first position, opens the oil outlet at the second position, and closes the communication between the upper liquid storage chamber and the oil outlet at the third position. The present invention can realize the stiffness adjustment of the upper support and meet the vibration isolation requirements under different working conditions.

Description

Technical Field

[0001] The present invention relates to the technical field of shock absorbers, and in particular to an upper support device of a shock absorber, a shock absorber and a vehicle. Background Art

[0002] Since the elastic element of the suspension system vibrates under impact, a shock absorber needs to be installed to absorb the vibration, improve the ride comfort, and achieve the purpose of attenuating the vibration. The upper support of the shock absorber is used to connect the shock absorber and the vehicle body, absorb the road surface impact, and jointly bear the functions of shock absorption and buffering with components such as the shock absorber and the spring.

[0003] In the related art, the conventional upper support of the shock absorber is made of rubber or polyurethane material, and the stiffness and dynamic stiffness are often fixed values, which cannot meet the vibration isolation requirements under different vibration frequencies and amplitudes. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, an object of the present invention is to provide an upper support device of a shock absorber, which can realize stiffness adjustment and meet the vibration isolation requirements under different working conditions.

[0005] The present invention also aims to provide a shock absorber to apply the above upper support device of the shock absorber.

[0006] The present invention also aims to provide a vehicle to apply the above shock absorber.

[0007] The upper support device of the shock absorber according to an embodiment of the present invention includes: a support seat made of a soft material, and a cavity is formed inside the support seat; an inner skeleton disposed in the cavity and dividing the cavity into an upper chamber and a lower chamber filled with oil, an inertia passage communicating the upper chamber and the lower chamber is provided on the inner skeleton, an upper liquid storage chamber, a lower liquid storage chamber and an oil inlet passage are provided inside the inner skeleton, the oil inlet passage has an oil outlet, the upper liquid storage chamber and the lower liquid storage chamber are communicated with the oil outlet, the upper liquid storage chamber is communicated with the upper chamber, the lower liquid storage chamber is communicated with the lower chamber, and the effective oil passage cross-section of the upper liquid storage chamber is larger than that of the lower liquid storage chamber; a valve member including a valve plate located in the oil outlet, the valve plate closes the oil outlet at the first position, the valve plate opens the oil outlet at the second position, and the valve plate closes the communication between the upper liquid storage chamber and the oil outlet at the third position.

[0008] The upper support device of the shock absorber according to an embodiment of the present invention can realize the stiffness adjustment of the upper support, so as to meet the vibration isolation requirements under different working conditions, improve the ride comfort of the whole vehicle, and improve the chassis response ability and handling performance by increasing the stiffness of the upper support device.

[0009] In some embodiments, the oil inlet passage includes: a main body portion with an oil inlet provided at the bottom thereof; an oil outlet portion communicating with the main body portion, an oil outlet being provided on the oil outlet portion, the width of the oil outlet portion being greater than that of the main body portion to form a stepped portion, the thickness of the valve plate being less than the height of the oil outlet portion, the width of the valve plate being less than the width of the oil outlet portion, and the valve plate abutting against the stepped portion when in the first position.

[0010] In some embodiments, a communication port communicating with the oil outlet portion is provided at the bottom of the upper liquid storage cavity, and the valve plate closes the communication port when in the third position; a first gap is formed between the side wall of the valve plate and the inner wall of the oil outlet portion, and the first gap is less than the width of the communication port; when the valve plate is in the first position, a second gap is formed between the valve plate and the top wall of the oil outlet portion, and the second gap is less than the width of the communication port.

[0011] In some embodiments, the second gap is greater than the first gap.

[0012] In some embodiments, a lower oil inlet flow channel is provided at the upper end of the lower liquid storage cavity, the lower oil inlet flow channel communicating with the oil outlet portion, the width of the lower oil inlet flow channel being less than the width of the second gap, and a lower oil outlet flow channel is provided at the bottom of the lower liquid storage cavity, the lower oil outlet flow channel communicating with the lower chamber.

[0013] In some embodiments, at least two of the lower oil inlet flow channels and the lower oil outlet flow channels are provided along the circumferential direction of the lower liquid storage cavity.

[0014] In some embodiments, the upper liquid storage cavity includes: a first portion with the communication port provided at the bottom thereof; a second portion communicating with the upper end of the first portion, an upper oil inlet flow channel being provided at the top of the second portion, the upper oil inlet flow channel communicating with the upper chamber, and the width of the first portion being greater than that of the lower liquid storage cavity.

[0015] In some embodiments, the valve member is a solenoid valve, the valve member including a valve body provided in the inner skeleton and partially located in the first portion, a telescopic rod being provided on the valve body, the telescopic rod passing through the communication port and connecting the valve plate.

[0016] In some embodiments, the inner framework includes: a framework body, an annular groove is provided on the inner wall of the cavity, a side portion of the framework body is disposed in the annular groove, a convex portion is provided on the framework body, and a mounting hole penetrating the framework body is provided on the convex portion; a valve mounting portion, the valve mounting portion is disposed in the mounting hole, and the upper liquid storage cavity, the lower liquid storage cavity, the oil inlet passage and the valve member are disposed on the valve mounting portion.

[0017] The shock absorber according to an embodiment of the present invention includes the upper support device described above.

[0018] The shock absorber according to an embodiment of the present invention can meet the vibration isolation requirements under different working conditions by providing an upper support device with adjustable stiffness, improve the ride comfort of the whole vehicle, can improve the chassis response ability and improve the handling performance.

[0019] The vehicle according to an embodiment of the present invention includes the shock absorber described above.

[0020] The vehicle according to an embodiment of the present invention can achieve adjustable stiffness by adopting the shock absorber, and improve the ride comfort and operating performance of the whole vehicle.

[0021] The additional aspects and advantages of the present invention will be partly given in the following description, partly will become obvious from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0023] Figure 1 is a schematic internal structure diagram of the upper support device of the shock absorber in an embodiment of the present invention;

[0024] Figure 2 is Figure 1 a partial enlarged view of II in

[0025] Figure 3 is a schematic internal structure diagram of the shock absorber in an embodiment of the present invention.

[0026] Reference numerals:

[0027] 100, upper support device;

[0028] 10, support seat;

[0029] 10a, upper chamber; 10b, lower chamber; 10c, annular groove;

[0030] 20, inner framework;

[0031] 20a, inertia passage;

[0032] 201. Upper liquid storage chamber; 201a. Communication port; 2011. First part; 2012. Second part; 2012a. Upper oil inlet channel;

[0033] 202. Lower liquid storage chamber; 202a. Lower oil inlet channel; 202b. Lower oil outlet channel;

[0034] 203. Oil inlet channel; 203a. Oil outlet; 2031. Main body part; 2031a. Oil inlet; 2032. Oil outlet part; 2032a. Step part;

[0035] 210. Skeleton main body; 210a. Convex part; 210b. Mounting hole; 220. Valve mounting part;

[0036] 30. Valve component;

[0037] 310. Valve plate; 320. Valve main body; 3201. Telescopic rod;

[0038] 1000. Shock absorber; 200. Outer cylinder; 300. Inner cylinder; 300a. Accommodating cavity; 300b. First inlet; 400. Piston rod; 400a. Oil channel; 400b. Second inlet; 500. Piston. Detailed implementation mode

[0039] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0040] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features, used to distinguish and describe features, without order or importance.

[0041] In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] Next, with reference to the accompanying drawings, the upper support device 100 of a shock absorber according to an embodiment of the present invention will be described.

[0044] As Figure 1 , Figure 2 shown, the upper support device 100 of a shock absorber according to an embodiment of the present invention includes: a support seat 10, an inner skeleton 20, and a valve member 30.

[0045] The support seat 10 is made of a soft material, and a cavity (not shown in the figure) is formed inside the support seat 10. The soft material may refer to a rubber material, that is, the support seat 10 is a rubber bladder. When subjected to a large extrusion, the support seat 10 can undergo elastic deformation, causing a change in the volume of the cavity, and playing a certain role in shock absorption.

[0046] The inner skeleton 20 is disposed in the cavity and divides the cavity into an upper chamber 10a filled with oil and a lower chamber 10b. An inertia passage 20a communicating the upper chamber 10a and the lower chamber 10b is provided on the inner skeleton 20. An upper liquid storage chamber 201, a lower liquid storage chamber 202, and an oil inlet passage 203 are provided inside the inner skeleton 20. The oil inlet passage 203 has an oil outlet 203a. The upper liquid storage chamber 201 and the lower liquid storage chamber 202 are communicated with the oil outlet 203a. The upper liquid storage chamber 201 is communicated with the upper chamber 10a, and the lower liquid storage chamber 202 is communicated with the lower chamber 10b. And the effective oil passage cross-section of the upper liquid storage chamber 201 is larger than that of the lower liquid storage chamber 202. The valve member 30 includes a valve plate 310 located in the oil outlet 203a. The valve plate 310 closes the oil outlet 203a in the first position, opens the oil outlet 203a in the second position, and closes the communication between the upper liquid storage chamber 201 and the oil outlet 203a in the third position.

[0047] It can be understood that the valve plate 310 remains in the first position under normal conditions. At this time, the hydraulic fluid only flows between the upper chamber 10a and the lower chamber 10b. When the shock absorber is subjected to an excitation force, the upper part of the support seat 10 is compressed and the lower part expands. The hydraulic fluid enters the lower chamber 10b from the upper chamber 10a through the inertia channel 20a. When the vibration on the shock absorber disappears, the upper part and the lower part of the support seat 10 recover, and the hydraulic fluid enters the upper chamber 10a from the lower chamber 10b through the inertia channel 20a. During this process, the vibration energy is consumed through inertial energy loss, thereby achieving the purpose of attenuating vibration.

[0048] When the pressure inside the shock absorber reaches the critical condition (for example, the pressure of the critical condition can refer to 20 pa to 25 pa), as the pressure increases, the valve plate 310 first is in the second position and opens the oil outlet 203a. Since the effective oil passage cross-section of the upper liquid storage chamber 201 is larger than that of the lower liquid storage chamber 202 (the effective oil passage cross-section can refer to the cross-section of the horizontal plane and the upper liquid storage chamber 201 or the lower liquid storage chamber 202), the hydraulic fluid in the oil inlet passage 203 will enter the upper liquid storage chamber 201 through the oil outlet 203a and act on the upper part of the support seat 10. As the pressure continues to increase, the valve plate 310 is in the third position. At this time, the connection between the upper liquid storage chamber 201 and the oil outlet 203a is cut off, and the hydraulic fluid enters the lower liquid storage chamber 202 and acts on the lower part of the support seat 10. That is to say, by opening the valve component 30, the pressure inside the shock absorber can be reduced, and pressure relief protection and stiffness adjustment of the upper support device 100 can be achieved.

[0049] The upper support device 100 of the shock absorber according to the embodiment of the present invention can achieve stiffness adjustment of the upper support, meet the vibration isolation requirements under different working conditions, improve the ride comfort of the whole vehicle. By increasing the stiffness of the upper support device 100, the chassis response ability can be improved and the handling performance can be enhanced.

[0050] In some embodiments, as Figure 2 shown, the oil inlet passage 203 includes a main body part 2031 and an oil outlet part 2032. An oil inlet 2031a is provided at the bottom of the main body part 2031 to enable the hydraulic fluid to enter the main body part 2031 from the oil inlet 2031a. The oil outlet part 2032 is communicated with the main body part 2031, and the oil outlet 203a is provided on the oil outlet part 2032. The width of the oil outlet part 2032 is greater than the width of the main body part 2031 to form a stepped part 2032a. The thickness of the valve plate 310 is less than the height of the oil outlet part 2032, the width of the valve plate 310 is less than the width of the oil outlet part 2032, and when the valve plate 310 is in the first position, it abuts against the stepped part 2032a.

[0051] The "width of the oil outlet part 2032" and the "width of the main body part 2031" can refer to Figure 2 the dimensions in the left-right direction, and the "thickness of the valve plate 310" can refer toFigure 2 In the vertical dimension, a first gap is formed between the side wall of the valve plate 310 and the inner wall of the oil outlet portion 2032, and a second gap is formed between the top wall of the valve plate 310 and the oil outlet portion 2032. The first gap and the second gap can provide a flow space for the oil, and at the same time, the second gap can also provide a moving space for the valve plate 310 to realize the switching of the valve plate 310 between the first position, the second position and the third position. The step portion 2032a abuts against the valve plate 310 to close the oil outlet 203a and prevent the oil from entering the oil outlet portion 2032.

[0052] When the valve plate 310 is in the second position, the valve plate 310 is disengaged from abutting against the step portion 2032a, a third gap is formed between the bottom of the valve plate 310 and the step portion 2032a, and the valve plate 310 does not contact the top wall of the oil outlet portion 2032, and it is ensured that the second gap exists. At this time, the oil can enter the first gap along the third gap, and then enter the second gap, and thus enter the upper liquid storage cavity 201 through the oil outlet 203a.

[0053] In some embodiments, as Figure 2 shown, a communication port 201a communicating with the oil outlet portion 2032 is provided at the bottom of the upper liquid storage cavity 201, and the valve plate 310 closes the communication port 201a when in the third position; the first gap is smaller than the width of the communication port 201a; when the valve plate 310 is in the first position, a second gap is formed between the valve plate 310 and the top wall of the oil outlet portion 2032, and the second gap is smaller than the width of the communication port 201a. Both the first gap and the second gap are smaller than the width of the communication port 201a. Therefore, the pressure at the communication port 201a is relatively small. When the valve plate 310 is in the second position, the oil will flow to the communication port 201a to realize pressure relief. As the pressure inside the shock absorber increases, the valve plate 310 reaches the third position. At this time, the valve plate 310 closes the communication port 201a, and the oil flows into the lower liquid storage cavity 202 for pressure relief.

[0054] In some embodiments, as Figure 2 shown, the second gap is larger than the first gap, that is to say, the space formed by the second gap is larger than the space formed by the first gap. Therefore, the pressure at the second gap is smaller than the pressure at the first gap, and the oil will flow from the first gap to the second gap.

[0055] In some embodiments, as Figure 2 shown, a lower oil inlet flow channel 202a is provided at the upper end of the lower liquid storage cavity 202. The lower oil inlet flow channel 202a communicates with the oil outlet portion 2032. The width of the lower oil inlet flow channel 202a is smaller than the width of the second gap. A lower oil outlet flow channel 202b is provided at the bottom of the lower liquid storage cavity 202, and the lower oil outlet flow channel 202b communicates with the lower chamber 10b.

[0056] When the valve plate 310 is in the second position, the oil outlet part 2032 communicates with the upper liquid storage cavity 201 through the first gap, the second gap and the communication port 201a, and communicates with the lower liquid storage cavity 202 through the lower oil inlet channel 202a. Since the width of the lower oil inlet channel 202a is smaller than that of the second gap, the pressure at the second gap is relatively small, and the oil will flow into the second gap and enter the upper liquid storage cavity 201, rather than flowing into the lower liquid storage cavity 202, thus realizing pressure relief. When the valve plate 310 is in the third position, the oil flows into the lower liquid storage cavity 202 through the lower oil inlet channel 202a, and then enters the lower chamber 10b through the lower oil outlet channel 202b.

[0057] In some embodiments, as Figure 2 shown, at least two lower oil inlet channels 202a and lower oil outlet channels 202b are provided along the circumferential direction of the lower liquid storage cavity 202. That is to say, by increasing the number of the lower oil inlet channels 202a and the lower oil outlet channels 202b, the pressure relief capacity can be improved, which is beneficial to quickly adjust the stiffness of the upper support device 100. For example, the number of the lower oil inlet channels 202a is two, and the number of the lower oil outlet channels 202b is two. Of course, the numbers of the lower oil inlet channels 202a and the lower oil outlet channels 202b can also be other values, which can be specifically set according to needs and will not be elaborated here.

[0058] In some embodiments, as Figure 1 shown, the upper liquid storage cavity 201 includes a first part 2011 and a second part 2012. A communication port 201a is provided at the bottom of the first part 2011; the second part 2012 is communicated with the upper end of the first part 2011, an upper oil inlet channel 2012a is provided at the top of the second part 2012, the upper oil inlet channel 2012a communicates with the upper chamber 10a, and the width of the first part 2011 is greater than that of the lower liquid storage cavity 202. The effective oil passage cross-section of the upper liquid storage cavity 201 may refer to the cross-section at the first part 2011. By setting the upper liquid storage cavity 201 into two parts, the liquid storage space can be increased, the pressure in the upper liquid storage cavity 201 is smaller, which is beneficial to the liquid flowing into the upper liquid storage cavity 201. After the oil enters the upper liquid storage cavity 201, it can enter the upper chamber 10a along the upper oil inlet channel 2012a to realize the communication between the upper liquid storage cavity 201 and the upper chamber 10a.

[0059] In some embodiments, as Figure 2As shown, the valve component 30 is a solenoid valve. The valve component 30 includes a valve body 320. The valve body 320 is arranged inside the inner skeleton 20 and partially located inside the first part 2011. A telescopic rod 3201 is provided on the valve body 320. The telescopic rod 3201 passes through the communication port 201a and is connected to the valve plate 310. The solenoid valve is beneficial to realizing automatic or intelligent control. The valve body 320 can drive the telescopic rod 3201 to perform telescopic movement, so as to realize the switching of the valve plate 310 between the first position, the second position and the third position. Among them, the second position can refer to the semi-open state of the solenoid valve, and the third position can refer to the fully open state of the solenoid valve. It should be noted that the valve body 320 is the main component of the solenoid valve, and its structure and operation are known to those of ordinary skill in the art, so they will not be described in detail here.

[0060] In some embodiments, such as Figure 1 As shown, the inner skeleton 20 includes a skeleton main body 210 and a valve installation part 220. An annular groove 10c is provided on the inner wall of the cavity. The side part of the skeleton main body 210 is arranged in the annular groove 10c. A convex part 210a is provided on the skeleton main body 210, and an installation hole 210b penetrating the skeleton main body 210 is provided on the convex part 210a; the valve installation part 220 is arranged in the installation hole 210b, and the upper liquid storage cavity 201, the lower liquid storage cavity 202, the oil inlet passage 203 and the valve component 30 are arranged on the valve installation part 220.

[0061] It can be understood that the skeleton main body 210 and the valve installation part 220 can be detachably installed through the cooperation of the installation hole 210b, which is beneficial to the maintenance or replacement of components. Secondly, the skeleton main body 210 and the valve installation part 220 can be manufactured by separate molds during the manufacturing stage, reducing the difficulty of mold development and cost. The convex part 210a can surround the valve installation part 220, providing good support and ensuring the connection reliability of the valve installation part 220 on the skeleton main body 210. The skeleton main body 210 can be detachably connected to the support seat 10 through the nested setting with the annular groove 10c, so as to realize the installation or disassembly of the inner skeleton 20 in the cavity.

[0062] Next, a specific embodiment of the upper support device 100 of the shock absorber of the present invention will be described with reference to the accompanying drawings.

[0063] Such as Figure 1 、 Figure 2 As shown, the upper support device 100 of the shock absorber includes a support seat 10, an inner skeleton 20, and a valve component 30.

[0064] The support seat 10 is made of rubber material, and a cavity is formed inside the support seat 10.

[0065] The inner framework 20 is arranged in the cavity and divides the cavity into an upper chamber 10a filled with oil and a lower chamber 10b. An inertia passage 20a communicating the upper chamber 10a and the lower chamber 10b is provided on the inner framework 20. An upper liquid storage cavity 201, a lower liquid storage cavity 202 and an oil inlet passage 203 are arranged inside the inner framework 20. The oil inlet passage 203 has an oil outlet 203a. The upper liquid storage cavity 201 and the lower liquid storage cavity 202 are communicated with the oil outlet 203a. The upper liquid storage cavity 201 is communicated with the upper chamber 10a, and the lower liquid storage cavity 202 is communicated with the lower chamber 10b. And the effective oil passage cross-section of the upper liquid storage cavity 201 is larger than that of the lower liquid storage cavity 202.

[0066] The oil inlet passage 203 includes a main body part 2031 and an oil outlet part 2032. An oil inlet 2031a is provided at the bottom of the main body part 2031. The oil inlet 2031a is provided at the bottom of the main body part 2031. The oil outlet part 2032 is communicated with the main body part 2031. The oil outlet 203a is provided on the oil outlet part 2032. The width of the oil outlet part 2032 is larger than that of the main body part 2031 to form a step part 2032a. The thickness of the valve plate 310 is smaller than the height of the oil outlet part 2032. The width of the valve plate 310 is smaller than the width of the oil outlet part 2032. When the valve plate 310 is in the first position, it abuts against the step part 2032a.

[0067] A communication port 201a communicating with the oil outlet part 2032 is provided at the bottom of the upper liquid storage cavity 201. The communication port 201a is closed by the valve plate 310 when the valve plate 310 is in the third position. A first gap is formed between the side wall of the valve plate 310 and the inner wall of the oil outlet part 2032. The first gap is smaller than the width of the communication port 201a. When the valve plate 310 is in the first position, a second gap is formed between the valve plate 310 and the top wall of the oil outlet part 2032. The second gap is smaller than the width of the communication port 201a.

[0068] The second gap is larger than the first gap.

[0069] A lower oil inlet flow channel 202a is provided at the upper end of the lower liquid storage cavity 202. The lower oil inlet flow channel 202a is communicated with the oil outlet part 2032. The width of the lower oil inlet flow channel 202a is smaller than the width of the second gap. A lower oil outlet flow channel 202b is provided at the bottom of the lower liquid storage cavity 202. The lower oil outlet flow channel 202b is communicated with the lower chamber 10b.

[0070] Two lower oil inlet flow channels 202a and two lower oil outlet flow channels 202b are provided along the circumferential direction of the lower liquid storage cavity 202.

[0071] The upper liquid storage chamber 201 includes a first part 2011 and a second part 2012. A communication port 201a is provided at the bottom of the first part 2011; the second part 2012 communicates with the upper end of the first part 2011, and an upper oil inlet flow channel 2012a is provided at the top of the second part 2012. The upper oil inlet flow channel 2012a communicates with the upper chamber 10a, and the width of the first part 2011 is greater than the width of the lower liquid storage chamber 202.

[0072] The inner skeleton 20 includes a skeleton main body 210 and a valve installation part 220. An annular groove 10c is provided on the inner wall of the cavity. The side part of the skeleton main body 210 is arranged in the annular groove 10c. A convex part 210a is provided on the skeleton main body 210, and an installation hole 210b penetrating the skeleton main body 210 is provided on the convex part 210a; the valve installation part 220 is arranged in the installation hole 210b, and the upper liquid storage chamber 201, the lower liquid storage chamber 202, the oil inlet channel 203 and the valve component 30 are arranged on the valve installation part 220.

[0073] The valve component 30 is an electromagnetic valve and includes a valve plate 310 and a valve main body 320. The valve plate 310 is located in the oil outlet 203a. The valve plate 310 closes the oil outlet 203a in the first position, opens the oil outlet 203a in the second position, and closes the communication between the upper liquid storage chamber 201 and the oil outlet 203a in the third position. The valve main body 320 is arranged in the inner skeleton 20 and partially located in the first part 2011. A telescopic rod 3201 is provided on the valve main body 320. The telescopic rod 3201 passes through the communication port 201a and is connected to the valve plate 310.

[0074] As Figure 3 shown, the shock absorber 1000 according to an embodiment of the present invention includes the aforementioned upper support device 100.

[0075] It should be noted that the shock absorber 1000 further includes an outer cylinder 200, an inner cylinder 300, a piston rod 400, and a piston 500. The inner cylinder 300 is arranged inside the outer cylinder 200. An accommodation cavity 300a is formed inside the inner cylinder 300. A first inlet 300b communicating with the accommodation cavity 300a is provided on the inner cylinder 300. The piston 500 is arranged in the accommodation cavity 300a. The piston rod 400 is arranged in the accommodation cavity 300a and penetrates through the piston 500 and the outer cylinder 200. An oil passage 400a is formed inside the piston rod 400. A second inlet 400b communicating with the oil passage 400a is provided on the piston rod 400. The oil liquid in the outer cylinder 200 can enter the accommodation cavity 300a through the first inlet 300b, and then enter the oil passage 400a through the second inlet 400b. The oil passage 400a communicates with the oil inlet 2031a of the oil inlet channel 203, so as to supply oil to the oil inlet channel 203.

[0076] When the internal pressure of the shock absorber 1000 increases under vibration, the hydraulic oil is supplied to the outer cylinder 200, and the valve component 30 in the upper support device 100 can change the oil path direction of the hydraulic oil, so as to adjust the stiffness of the upper support device 100 smoothly.

[0077] For the shock absorber according to the embodiment of the present invention, by providing the upper support device 100 with adjustable stiffness, the vibration isolation requirements under different working conditions can be met, the ride comfort of the whole vehicle can be improved, the chassis response ability can be improved, and the handling performance can be improved.

[0078] The vehicle according to the embodiment of the present invention includes the shock absorber 1000 described above.

[0079] For the vehicle according to the embodiment of the present invention, by adopting the shock absorber 1000, the adjustable stiffness can be realized, and the ride comfort and operation performance of the whole vehicle can be improved.

[0080] Other components and operations of the shock absorber 1000 according to the embodiment of the present invention are known to those of ordinary skill in the art and will not be described in detail here.

[0081] In the description of this specification, the description with reference to terms such as "some embodiments", "optionally", "further" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0082] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An upper support device for a shock absorber, characterized in that, it comprises: a support seat made of a soft material, and a cavity is formed inside the support seat; an inner skeleton disposed in the cavity, which divides the cavity into an upper chamber and a lower chamber filled with hydraulic oil. An inertia passage communicating the upper chamber and the lower chamber is provided on the inner skeleton. An upper liquid storage cavity, a lower liquid storage cavity and an oil inlet passage are provided inside the inner skeleton. The oil inlet passage has an oil outlet, and the upper liquid storage cavity and the lower liquid storage cavity are communicated with the oil outlet. The upper liquid storage cavity is communicated with the upper chamber, and the lower liquid storage cavity is communicated with the lower chamber, and the effective oil passage cross-section of the upper liquid storage cavity is larger than that of the lower liquid storage cavity; a valve member, which includes a valve plate located in the oil outlet. The valve plate closes the oil outlet at the first position, opens the oil outlet at the second position, and closes the communication between the upper liquid storage cavity and the oil outlet at the third position.

2. The upper support device for a shock absorber according to claim 1, characterized in that, the oil inlet passage includes: a main body part with an oil inlet provided at the bottom; an oil outlet part communicated with the main body part, the oil outlet is provided on the oil outlet part, the width of the oil outlet part is larger than that of the main body part to form a stepped part, the thickness of the valve plate is smaller than the height of the oil outlet part, the width of the valve plate is smaller than the width of the oil outlet part, and the valve plate abuts against the stepped part when in the first position.

3. The upper support device for a shock absorber according to claim 2, characterized in that, a communication port communicating with the oil outlet part is provided at the bottom of the upper liquid storage cavity, and the valve plate closes the communication port at the third position; a first gap is formed between the side wall of the valve plate and the inner wall of the oil outlet part, and the first gap is smaller than the width of the communication port; when the valve plate is in the first position, a second gap is formed between the valve plate and the top wall of the oil outlet part, and the second gap is smaller than the width of the communication port.

4. The upper support device for a shock absorber according to claim 3, characterized in that, the second gap is larger than the first gap.

5. The upper support device for a shock absorber according to claim 4, characterized in that, a lower oil inlet flow channel is provided at the upper end of the lower liquid storage cavity, the lower oil inlet flow channel communicates with the oil outlet part, the width of the lower oil inlet flow channel is smaller than the width of the second gap, and a lower oil outlet flow channel is provided at the bottom of the lower liquid storage cavity, and the lower oil outlet flow channel communicates with the lower chamber.

6. The upper support device for a shock absorber according to claim 5, characterized in that, at least two of the lower oil inlet flow channels and the lower oil outlet flow channels are provided along the circumferential direction of the lower liquid storage cavity.

7. The upper support device for a shock absorber according to claim 3, characterized in that, the upper liquid storage cavity includes: a first part with the communication port provided at the bottom; The second part, the second part is communicated with the upper end of the first part, an upper oil inlet flow channel is arranged at the top of the second part, the upper oil inlet flow channel is communicated with the upper chamber, and the width of the first part is greater than the width of the lower liquid storage chamber.

8. The upper support device of the shock absorber according to claim 7, characterized in that the valve component is a solenoid valve, the valve component includes a valve body, the valve body is arranged in the inner skeleton and partially located in the first part, a telescopic rod is arranged on the valve body, and the telescopic rod is arranged through the communication port and connected to the valve plate.

9. The upper support device of the shock absorber according to claim 1, characterized in that the inner skeleton includes: a skeleton main body, an annular groove is arranged on the inner wall of the cavity, the side part of the skeleton main body is arranged in the annular groove, a convex part is arranged on the skeleton main body, and a mounting hole penetrating through the skeleton main body is arranged on the convex part; a valve mounting part, the valve mounting part is arranged in the mounting hole, and the upper liquid storage chamber, the lower liquid storage chamber, the oil inlet channel and the valve component are arranged on the valve mounting part.

10. A shock absorber, characterized in that it includes: the upper support device according to any one of claims 1 to 9.

11. A vehicle, characterized in that it includes the shock absorber according to claim 10.

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