Valve seat for shock absorber, shock absorber and vehicle

Abstract

The utility model discloses a valve seat for a shock absorber, the shock absorber and a vehicle. The valve seat comprises a communicating part, a first cylindrical mounting part and a second cylindrical mounting part, wherein the first cylindrical mounting part and the second cylindrical mounting part are connected with the communicating part. The first cylindrical mounting part comprises a first mounting cavity, and the first mounting cavity is provided with a first opening away from one side of the communicating part so that the control valve can be mounted in the first mounting cavity through the first opening. The second cylindrical mounting part comprises a second mounting cavity, and the second mounting cavity is provided with a second opening away from one side of the communicating part so that the control valve can be mounted in the second mounting cavity through the second opening. The communicating part comprises a first channel, a second channel, a third channel and a fourth channel, the first channel and the second channel are respectively communicated with the first mounting cavity of the first cylindrical mounting part, and the third channel and the fourth channel are respectively communicated with the second mounting cavity of the second cylindrical mounting part. And the first cylindrical mounting part, the second cylindrical mounting part and the communicating part are integrally formed. The control valve is easy to install, convenient to disassemble and replace and convenient to maintain after sale in the later period.

Description

Technical Field

[0001] The embodiment of the utility model relates to a valve seat for a shock absorber, a shock absorber and a vehicle. Background Art

[0002] The elastic element in the suspension system will rebound and generate vibration after absorbing shock. In order to improve the vibration caused by rebound, a shock absorber connected in parallel with the elastic element can be installed in the automobile suspension system to attenuate the vibration. The working principle of the shock absorber is that when the frame (or body) and the axle vibrate and there is relative movement, the piston rod in the shock absorber moves up and down, and the oil in the oil storage cylinder of the shock absorber repeatedly flows from one cavity to another through different valves. At this time, the friction between the hole wall and the oil and the internal friction between the oil molecules form a damping force on the vibration, so that the vibration energy of the car is converted into oil heat energy, which is then absorbed by the shock absorber and dissipated into the atmosphere. Utility Model Content

[0003] At least one embodiment of the utility model provides a valve seat for a shock absorber, comprising a connecting portion and a first cylindrical mounting portion and a second cylindrical mounting portion respectively connected to the connecting portion, the first cylindrical mounting portion comprising a first mounting cavity, the first mounting cavity having a first opening away from a side of the connecting portion so that a control valve can be installed in the first mounting cavity via the first opening, the second cylindrical mounting portion comprising a second mounting cavity, the second mounting cavity having a second opening away from a side of the connecting portion so that the control valve can be installed in the second mounting cavity via the second opening, the connecting portion comprising a first channel, a second channel, a third channel and a fourth channel, the first channel and the second channel are respectively connected to the first mounting cavity of the first cylindrical mounting portion, the third channel and the fourth channel are respectively connected to the second mounting cavity of the second cylindrical mounting portion, and the first cylindrical mounting portion and the second cylindrical mounting portion are integrally formed with the connecting portion.

[0004] For example, in a valve seat provided in one embodiment of the present invention, the side wall of the connecting portion includes a first connecting side wall and a second connecting side wall, the first cylindrical mounting portion is arranged on the first connecting side wall, and the second cylindrical mounting portion is arranged on the second connecting side wall, the connecting portion also includes a connecting end surface located at one end thereof, the ports of the first channel and the second channel away from the first mounting cavity are located on the connecting end surface, and the ports of the third channel and the fourth channel away from the second mounting cavity are located on the connecting end surface.

[0005] For example, in the valve seat provided in one embodiment of the utility model, a first circular ring limiting portion, a second circular ring limiting portion and a third circular ring limiting portion are further arranged on the connecting end surface of the connecting portion, the first circular ring limiting portion is located in the area enclosed by the second circular ring limiting portion, the second circular ring limiting portion is located in the area enclosed by the third circular ring limiting portion, the port of the first channel located on the connecting end surface is located in the first area enclosed by the first circular ring limiting portion, the port of the third channel located on the connecting end surface is located in the second area between the first circular ring limiting portion and the second circular ring limiting portion, and the ports of the second channel and the fourth channel located on the connecting end surface are located in the third area enclosed by the second circular ring limiting portion and the third circular ring limiting portion.

[0006] For example, in the valve seat provided in one embodiment of the utility model, the connecting portion further includes a fifth channel and a sixth channel, a port of the fifth channel is located on the connecting end surface, the side wall of the connecting portion further includes a third connecting side wall, another port of the fifth channel passes through the third connecting side wall, a port of the sixth channel is located on the connecting end surface, the side wall of the connecting portion further includes a fourth connecting side wall, another port of the sixth channel passes through the fourth connecting side wall.

[0007] For example, in the valve seat provided in an embodiment of the present invention, the port of the sixth channel located at the communicating end surface at least partially overlaps with the port of the first channel located at the communicating end surface.

[0008] For example, in the valve seat provided in one embodiment of the utility model, the port of the fifth channel located on the connecting end surface is located in the second area between the first circular ring limiting portion and the second circular ring limiting portion, and the port of the sixth channel located on the connecting end surface is located in the first area enclosed by the first circular ring limiting portion.

[0009] For example, in a valve seat provided in an embodiment of the present utility model, the central axes of the first cylindrical mounting portion and the second cylindrical mounting portion are arranged at an angle.

[0010] At least one embodiment of the utility model provides a shock absorber, comprising: a tube assembly, a piston, a piston rod, a first control valve, a second control valve and a valve seat as described in any one of the above items, the tube assembly comprising an inner tube, an intermediate tube and an outer tube, the intermediate tube is sleeved in the outer tube, the inner tube is sleeved in the intermediate tube, the tube assembly has a first end and a second end opposite to each other along its axial direction; the piston is located in the inner tube, and divides the cavity of the inner tube into a first working cavity and a second working cavity, the first working cavity is closer to the first end of the tube assembly than the second working cavity; the piston rod is connected to the piston and extends to the outside of the tube assembly via the second working cavity; the valve seat is arranged at the first end of the tube assembly; the first control valve is arranged in the first installation cavity of the valve seat, the second control valve is arranged in the second installation cavity of the valve seat, the cavity between the intermediate tube and the inner tube is a third working cavity, the third The working chamber is communicated with the second working chamber, the chamber between the intermediate tube and the outer tube is the fourth working chamber, the first channel is communicated with the first working chamber to make the first working chamber communicate with the first installation chamber, the second channel is communicated with the fourth working chamber to make the fourth working chamber communicate with the first installation chamber, so that the first working chamber is communicated with the fourth working chamber via the first control valve in the first installation chamber, the third channel is communicated with the third working chamber to make the third working chamber communicate with the second installation chamber, the fourth channel is communicated with the fourth working chamber to make the fourth working chamber communicate with the second installation chamber, so that the third working chamber is communicated with the fourth working chamber via the second control valve in the second installation chamber, and the shock absorber also includes an accumulator, which is located outside the outer wall of the outer tube, and the outer tube is located outside the space surrounded by the outer peripheral wall of the accumulator, and the accumulator is communicated with the fourth working chamber.

[0011] For example, in the shock absorber provided in one embodiment of the utility model, the first control valve includes a first one-way throttle valve, the first one-way throttle valve includes a first one-way opening channel and a first throttling channel, the second control valve includes a second one-way throttle valve, the second one-way throttle valve includes a second one-way opening channel and a second throttling channel, the two ends of the first throttling channel are respectively connected to the first channel and the second channel, the two ends of the first one-way opening channel are respectively connected to the first channel and the second channel, the first one-way opening channel is configured to open when the fluid flows from the fourth working chamber to the first working chamber, the two ends of the second throttling channel are respectively connected to the third channel and the fourth channel, the two ends of the second one-way opening channel are respectively connected to the third channel and the fourth channel, and the second one-way opening channel is configured to open when the fluid flows from the fourth working chamber to the third working chamber.

[0012] For example, in a shock absorber provided in an embodiment of the utility model, the connecting part includes a connecting end face located at one end thereof, ports of the first channel and the second channel away from the first mounting cavity are located on the connecting end face, ports of the third channel and the fourth channel away from the second mounting cavity are located on the connecting end face, and a first circular ring limiting part, a second circular ring limiting part and a third circular ring limiting part are also provided on the connecting end face of the connecting part, the first circular ring limiting part is located in an area enclosed by the second circular ring limiting part, the second circular ring limiting part is located in an area enclosed by the third circular ring limiting part, the port of the first channel located on the connecting end face is located in the first area enclosed by the first circular ring limiting part, the port of the third channel located on the connecting end face is located in the second area between the first circular ring limiting part and the second circular ring limiting part, and the The ports of the second channel and the fourth channel located on the connecting end face are located in the third area surrounded by the second circular ring limiting portion and the third circular ring limiting portion, the end of the inner tube close to the valve seat is fitted with the first circular ring limiting portion, and the orthographic projection of the first working chamber on the connecting end face falls into the first area so that the first working chamber is connected with the port located in the first area; the end of the intermediate tube close to the valve seat is fitted with the second circular ring limiting portion, and the orthographic projection of the third working chamber on the connecting end face falls into the second area so that the second working chamber is connected with the port located in the second area; the end of the outer tube close to the valve seat is fitted with the third circular ring limiting portion, and the orthographic projection of the fourth working chamber on the connecting end face falls into the third area so that the fourth working chamber is connected with the port located in the third area.

[0013] For example, in the shock absorber provided in one embodiment of the utility model, the connecting part also includes a fifth channel and a sixth channel, a port of the fifth channel is located on the connecting end surface and within the second region to connect the fifth channel with the third working chamber, the side wall of the connecting part also includes a third connecting side wall, another port of the fifth channel passes through the third connecting side wall, a port of the sixth channel is located on the connecting end surface and within the first region to connect the sixth channel with the first working chamber, and the side wall of the connecting part also includes a fourth connecting side wall, another port of the sixth channel passes through the fourth connecting side wall.

[0014] For example, in the shock absorber provided in an embodiment of the present invention, the accumulator is fixed on the outer side wall of the outer tube, or the accumulator is connected to the outer tube through a pipeline.

[0015] At least one embodiment of the utility model provides a vehicle, comprising any one of the above-mentioned shock absorbers.

[0016] In the valve seat provided in the embodiment of the utility model, the first cylindrical mounting portion and the second cylindrical mounting portion for mounting the control valve are integrally formed with the connecting portion, thereby not only making the installation of the control valve simple, but also facilitating the disassembly and replacement of the control valve, and facilitating the later after-sales maintenance. For example, when the control valve is inspected or replaced, only the control valve needs to be disassembled, and the valve seat and the shock absorber do not need to be disassembled or replaced, which greatly reduces the after-sales cost of the shock absorber. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present utility model, rather than limiting the present utility model.

[0018] Figure 1 A schematic diagram of the structure of a valve seat for a shock absorber provided in an embodiment of the utility model;

[0019] Figure 2 for Figure 1 A front view of the valve seat is shown;

[0020] Figure 3 for Figure 1 A schematic top view of the valve seat shown;

[0021] Figure 4 for Figure 2 The schematic cross-sectional view of the valve seat along the section line AA shown;

[0022] Figure 5 for Figure 2 The schematic cross-sectional view of the valve seat along the section line BB shown;

[0023] Figure 6 for Figure 2 The schematic cross-sectional view of the valve seat along the cutting line CC shown;

[0024] Figure 7 A schematic diagram of the structure of a shock absorber provided in an embodiment of the utility model;

[0025] Figure 8 for Figure 7 A schematic diagram of a hydraulic oil circuit of a shock absorber shown;

[0026] Fig. 9 for Figure 7 A schematic cross-sectional view of the shock absorber shown along the cutting line DD; and

[0027] Fig.10 A schematic structural diagram of another shock absorber provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Unless otherwise defined, the technical or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0030] Unless otherwise defined, the features such as "parallel", "perpendicular" and "same" used in the embodiments of the present invention include the situations of "parallel", "perpendicular", "same" in a strict sense, as well as the situations of "approximately parallel", "approximately perpendicular", "approximately the same" and the like that contain a certain error. For example, the above-mentioned "approximately" may indicate that the difference of the compared objects is within 10% or 5% of the average value of the compared objects. When the number of a component or element is not specifically indicated in the following of the embodiments of the present invention, it means that the component or element may be one or more, or may be understood as at least one. "At least one" means one or more, and "more than one" means at least two.

[0031] The embodiment of the utility model provides a valve seat, a shock absorber and a vehicle for a shock absorber. The valve seat includes a connecting portion and a first cylindrical mounting portion and a second cylindrical mounting portion respectively connected to the connecting portion. The first cylindrical mounting portion includes a first mounting cavity, the first mounting cavity has a first opening away from one side of the connecting portion so that the control valve can be installed in the first mounting cavity via the first opening. The second cylindrical mounting portion includes a second mounting cavity, the second mounting cavity has a second opening away from one side of the connecting portion so that the control valve can be installed in the second mounting cavity via the second opening. The connecting portion includes a first channel, a second channel, a third channel and a fourth channel, the first channel and the second channel are respectively connected to the first mounting cavity of the first cylindrical mounting portion, and the third channel and the fourth channel are respectively connected to the second mounting cavity of the second cylindrical mounting portion. The first cylindrical mounting portion and the second cylindrical mounting portion are integrally formed with the connecting portion.

[0032] In the valve seat provided in the embodiment of the utility model, the first cylindrical mounting portion and the second cylindrical mounting portion for mounting the control valve are integrally formed with the connecting portion, thereby not only making the installation of the control valve simple, but also facilitating the disassembly and replacement of the control valve, and facilitating the later after-sales maintenance. For example, when the control valve is inspected or replaced, only the control valve needs to be disassembled, and the valve seat and the shock absorber do not need to be disassembled or replaced, which greatly reduces the after-sales cost of the shock absorber.

[0033] Hereinafter, the valve seat for the shock absorber, the shock absorber and the vehicle provided in the embodiments of the utility model will be described in detail with reference to the accompanying drawings.

[0034] An embodiment of the utility model provides a valve seat for a shock absorber. Figure 1 A schematic diagram of the structure of a valve seat for a shock absorber provided in an embodiment of the utility model; Figure 2 for Figure 1 A front view of the valve seat is shown; Figure 3 for Figure 1 A schematic top view of the valve seat shown; Figure 4 for Figure 2 The schematic cross-sectional view of the valve seat along the section line AA shown; Figure 5 for Figure 2 The schematic cross-sectional view of the valve seat along the section line BB shown; Figure 6 for Figure 2 The valve seat is shown in a cross-sectional schematic diagram along the cutting line CC.

[0035] like Figures 1 to 6 As shown, the valve seat 100 includes a communication portion 110 and a first cylindrical mounting portion 120 and a second cylindrical mounting portion 130 respectively connected to the communication portion 110. The first cylindrical mounting portion 120 includes a first mounting cavity 121, and the first mounting cavity 121 has a first opening 1210 away from the communication portion 110 so that the control valve is installed in the first mounting cavity 121 via the first opening 1210. The second cylindrical mounting portion 130 includes a second mounting cavity 131, and the second mounting cavity 131 has a second opening 1310 away from the communication portion 110 so that the control valve is installed in the second mounting cavity 131 via the second opening 1310. The communication portion 110 includes a first channel 111, a second channel 112, a third channel 113 and a fourth channel 114, and the first channel 111 and the second channel 112 are respectively connected to the first mounting cavity 121 of the first cylindrical mounting portion 120, and the third channel 113 and the fourth channel 114 are respectively connected to the second mounting cavity 131 of the second cylindrical mounting portion 130. The first cylindrical mounting portion 120 and the second cylindrical mounting portion 130 are integrally formed with the connecting portion 110. For example, the control valve installed in the first mounting cavity is called a first control valve, and the control valve installed in the second mounting cavity is called a second control valve.

[0036] In the valve seat provided in the embodiment of the utility model, the first cylindrical mounting portion and the second cylindrical mounting portion for mounting the control valve are integrally formed with the connecting portion, thereby not only making the installation of the control valve simple, but also facilitating the disassembly and replacement of the control valve, and facilitating the later after-sales maintenance. For example, when the control valve is inspected or replaced, only the control valve needs to be disassembled, and the valve seat and the shock absorber do not need to be disassembled or replaced, which greatly reduces the after-sales cost of the shock absorber.

[0037] For example, the first channel and the second channel are connected to the first control valve in the first installation cavity, and under the action of the first control valve, the fluid flowing through the first control valve can be controlled. For example, throttling or one-way flow of the fluid can be achieved. For example, the third channel and the fourth channel are connected to the second control valve in the second installation cavity, and under the action of the second control valve, the fluid flowing through the second control valve can be controlled. For example, throttling or one-way flow of the fluid can be achieved. For a detailed description of the various channels and control valves of the valve seat, please refer to the embodiments of the shock absorber part below in this specification.

[0038] In some examples, such as Figure 3 As shown, the side wall of the communication portion 110 includes a first communication side wall S1 and a second communication side wall S2, the first cylindrical mounting portion 120 is disposed on the first communication side wall S1, and the second cylindrical mounting portion 130 is disposed on the second communication side wall S2. The communication portion 110 also includes a communication end surface S5 located at one end thereof, the ports of the first channel 111 and the second channel 112 away from the first mounting cavity 121 are located on the communication end surface S5, and the ports of the third channel 113 and the fourth channel 114 away from the second mounting cavity 131 are located on the communication end surface S5. For example, the first communication side wall S1 and the second communication side wall S2 are two parts of the side wall of the communication portion 110, respectively.

[0039] By arranging the first cylindrical mounting portion and the second cylindrical mounting portion on the side wall of the connecting portion, it is easier to design the paths of the four channels and also facilitates the arrangement of the spatial positions of the first cylindrical mounting portion and the second cylindrical mounting portion relative to the connecting portion.

[0040] By locating the ports of the first channel and the second channel away from the first installation cavity on the connecting end surface, and locating the ports of the third channel and the fourth channel away from the second installation cavity on the connecting end surface, the pipe assembly matching with the valve seat can be located on one side of the connecting end surface, which facilitates the structural design of the valve seat, the pipe assembly and the shock absorber in which they are located.

[0041] In some examples, such as Figures 1 to 3 , Figure 5As shown, the communication portion 110 further includes a fifth channel 115, one port of the fifth channel 115 is located on the communication end surface S5, and the side wall of the communication portion 110 further includes a third communication side wall S3, and another port of the fifth channel 115 penetrates the third communication side wall S3. For example, the fifth channel 115 can be used to communicate with an external device, for example, the external device can be a power device, such as a pump. For example, the fifth channel 115 can be used for oil intake or oil discharge. For example, the external device can also be a regulating valve, etc.

[0042] In some examples, such as Figures 1 to 3 , Figure 5 As shown, the communication portion 110 further includes a sixth channel 116, and the side wall of the communication portion 110 further includes a fourth communication side wall S4, and another port of the sixth channel 116 penetrates the fourth communication side wall S4. For example, the sixth channel 116 can be used to communicate with an external device, for example, the external device can be a power device, such as a pump. For example, the sixth channel 116 can be used for oil intake or oil discharge. For example, the external device can also be a regulating valve, etc.

[0043] In some examples, such as Figure 1 and Figure 2 As shown, the third communication side wall S3 and the fourth communication side wall S4 are coplanar. For example, the third communication side wall S3 and the fourth communication side wall S4 are planes.

[0044] In some examples, such as Figure 5 As shown, the port of the sixth channel 116 located on the communication end surface S5 at least partially overlaps with the port of the first channel 111 located on the communication end surface S5. For example, the port of the sixth channel 116 located on the communication end surface S5 completely overlaps with the port of the first channel 111 located on the communication end surface S5.

[0045] In some examples, such as Figure 3 and Figure 5 As shown, the connecting end surface S5 of the connecting portion 110 is further provided with a first annular stopper 117, a second annular stopper 118 and a third annular stopper 119. The first annular stopper 117 is located in the area enclosed by the second annular stopper 118, and the second annular stopper 118 is located in the area enclosed by the third annular stopper 119. The port of the first channel 111 located at the connecting end surface S5 is located in the first area enclosed by the first annular stopper 117, the ports of the third channel 113 and the fifth channel 115 located at the connecting end surface S5 are located in the second area between the first annular stopper 117 and the second annular stopper 118, and the ports of the second channel 112 and the fourth channel 114 located at the connecting end surface S5 are located in the third area between the second annular stopper 118 and the third annular stopper 119.

[0046] By setting the first annular stopper, the second annular stopper and the third annular stopper, the ports of the first channel, the second channel, the third channel and the fourth channel on the communicating end surface can be located in different areas, so that each channel of the valve seat can be connected to a different working chamber. In addition, each annular stopper can also limit the structure installed on the valve seat to facilitate the installation and fixation of the structure, for example, the structure can be a pipe assembly, etc.

[0047] In some examples, such as Figure 1 and Figure 3 As shown, the center axis L1 of the first cylindrical mounting portion 120 and the center axis L2 of the second cylindrical mounting portion 130 are arranged at an angle. For example, the size of the angle can be designed according to the installation environment of the valve seat 100 to minimize the occupation of the valve seat 100 on the control components of the installation environment.

[0048] The embodiment of the utility model also provides a shock absorber. Figure 7 The structure diagram of a shock absorber provided by the embodiment of the utility model is shown in FIG. Figure 7 As shown, the shock absorber includes a pipe assembly 210, a piston 220, a piston rod 230, a first control valve 240, a second control valve 250 and a valve seat 100. The valve seat 100 can be the valve seat 100 of any of the above embodiments. Thus, the shock absorber 200 has the beneficial effects corresponding to the beneficial effects of the valve seat 100, which will not be repeated here.

[0049] like Figures 1 to 7 As shown, the pipe assembly 210 includes an inner pipe 211, an intermediate pipe 212 and an outer pipe 213. The intermediate pipe 212 is sleeved in the outer pipe 213, and the inner pipe 211 is sleeved in the intermediate pipe 212. The pipe assembly 210 has a first end S1 and a second end (not shown in the figure) opposite to each other along its axial direction X. The piston 220 is located in the inner pipe 211 and divides the cavity of the inner pipe 211 into a first working cavity V1 and a second working cavity V2, and the first working cavity V1 is closer to the first end S1 of the pipe assembly 210 than the second working cavity V2. The piston rod 230 is connected to the piston 220 and extends to the outside of the pipe assembly 210 via the second working cavity V2. The valve seat 100 is arranged at the first end S1 of the pipe assembly 210. The first control valve 240 is arranged in the first installation cavity 121 of the valve seat 100, and the second control valve 250 is arranged in the second installation cavity 131 of the valve seat 100. The cavity between the middle tube 212 and the inner tube 211 is the third working cavity V3, which is connected to the second working cavity V2. The cavity between the middle tube 212 and the outer tube 213 is the fourth working cavity V4.

[0050] The first channel 111 is communicated with the first working chamber V1 so that the first working chamber V1 is communicated with the first installation chamber 121, and the second channel 112 is communicated with the fourth working chamber V4 so that the fourth working chamber V4 is communicated with the first installation chamber 121, so that the first working chamber V1 is communicated with the fourth working chamber V4 via the first control valve 240 in the first installation chamber 121. For example, the mutual circulation of the fluid in the first working chamber V1 and the fourth working chamber V4 can be controlled by the first control valve 240, so that the positions of the piston 220 and the piston rod 230 can be adjusted to achieve a shock absorbing effect.

[0051] The third channel 113 is communicated with the third working chamber V3 so that the third working chamber V3 is communicated with the second installation chamber 131, and the fourth channel 114 is communicated with the fourth working chamber V4 so that the fourth working chamber V4 is communicated with the second installation chamber 131, so that the third working chamber V3 is communicated with the fourth working chamber V4 via the second control valve 250 in the second installation chamber 131. For example, the mutual circulation of the fluid in the third working chamber V3 and the fourth working chamber V4 can be controlled by the second control valve 250. For example, the mutual circulation of the fluid in the third working chamber V3 and the fourth working chamber V4 can be controlled by the second control valve 250, so that the positions of the piston 220 and the piston rod 230 can be adjusted to achieve a shock absorbing effect.

[0052] like Figure 7 As shown, the shock absorber 200 further includes an accumulator 260, which is located outside the outer wall of the outer tube 213, and the outer tube 213 is located outside the space surrounded by the outer peripheral wall of the accumulator 260, and the accumulator 260 is connected to the fourth working chamber V4. The figure schematically shows that the accumulator 260 is connected to the outer tube 213 of the pipe assembly 210 through a pipe 270. Of course, the embodiment of the utility model is not limited to this, for example, the accumulator can also be fixed on the outer wall of the outer tube of the pipe assembly.

[0053] On the one hand, the accumulator is arranged outside the outer wall of the outer tube, and the outer tube is arranged outside the space surrounded by the outer peripheral wall of the accumulator, so that the position of the accumulator can be flexibly set according to the installation environment of the shock absorber, thereby improving the adaptability of the shock absorber. For example, the accumulator can be connected by a pipeline and spaced apart from the tube assembly to better arrange the position of the accumulator. On the other hand, the accumulator is connected to the fourth working chamber, and the fluid in the accumulator can circulate with the fluid in the fourth working chamber, and then, can circulate with the fluid in the first working chamber and the third working chamber through the first control valve and the second control valve. For example, during the movement of the piston rod, the accumulator can store oil and also replenish oil into the working chamber of the tube assembly.

[0054] In some examples, such as Figure 7As shown, the first control valve 240 includes a first one-way throttle valve, which includes a first one-way opening channel 241 and a first throttle channel 242. For example, the first throttle channel 242 is mainly used to achieve the throttling effect of the fluid, and the flow rate of the first throttle channel 242 is less than the flow rate of the first one-way opening channel 241. The second control valve 250 includes a second one-way throttle valve, which includes a second one-way opening channel 251 and a second throttle channel 252. For example, the second throttle channel 252 is mainly used to achieve the throttling effect of the fluid, and the flow rate of the second throttle channel 252 is less than the flow rate of the second one-way opening channel 251.

[0055] The two ends of the first throttling channel 242 are respectively connected to the first channel 111 and the second channel 112. The two ends of the first one-way opening channel 241 are respectively connected to the first channel 111 and the second channel 112. The first one-way opening channel 241 is configured to open when the fluid flows from the fourth working chamber V4 to the first working chamber V1. The two ends of the second throttling channel 252 are respectively connected to the third channel 113 and the fourth channel 114, and the two ends of the second one-way opening channel 251 are respectively connected to the third channel 113 and the fourth channel 114, and the second one-way opening channel 251 is configured to open when the fluid flows from the fourth working chamber V4 to the third working chamber V3.

[0056] In order to more clearly illustrate the regulation of the movement of the piston rod by the first control valve and the second control valve, an explanation is given below in conjunction with the hydraulic oil circuit diagram. Figure 8 for Figure 7 A schematic diagram of a hydraulic oil circuit. Figure 7 and Figure 8 As shown, when the piston rod 230 descends, the first working chamber V1 is compressed, and the fluid in the first working chamber V1 flows to the fourth working chamber V4 through the first control valve 240. The first one-way opening channel 241 of the first control valve 240 is not opened, and the first throttling channel 242 of the first control valve 240 throttles the fluid, so that the fluid in the first working chamber V1 cannot flow out quickly, thereby avoiding the rapid change of the piston rod 230, adjusting the movement of the piston rod 230, and achieving a shock-absorbing effect.

[0057] For example, Figure 7 and Figure 8 As shown, when the piston rod 230 descends, the volume of the second working chamber V2 increases, and the fluid in the fourth working chamber V4 can flow to the third working chamber V3 and the second working chamber V2 through the second one-way opening channel 251, so that the fluid in the third working chamber V3 and the second working chamber V2 can be replenished in time.

[0058] For example, Figure 7 and Figure 8As shown, when the piston rod 230 rises, the second working chamber V2 is compressed, and the fluid in the second working chamber V2 flows to the fourth working chamber V4 through the third working chamber V3 and the second control valve 250. The second one-way opening channel 251 of the second control valve 250 is not opened, and the second throttling channel 252 of the second control valve 250 throttles the fluid, so that the fluid in the second working chamber V2 cannot flow out quickly, thereby avoiding the rapid change of the piston rod 230, adjusting the movement of the piston rod 230, and achieving a shock-absorbing effect.

[0059] For example, Figure 7 and Figure 8 As shown, when the piston rod 230 rises, the volume of the first working chamber V1 increases, and the fluid in the fourth working chamber V4 can flow to the first working chamber V1 through the first one-way opening channel 241, so that the fluid in the first working chamber V1 can be replenished in time.

[0060] For example, Figure 7 and Figure 8 As shown, when the piston rod 230 is compressed or raised, the accumulator 260 can store the oil flowing from each working chamber, and can also replenish the oil into each working chamber.

[0061] In some examples, such as Figure 3 and Figure 7 As shown, the end of the inner tube 211 close to the valve seat 100 is fitted with the first annular stopper 117. The orthographic projection of the first working chamber V1 on the connecting end surface S5 falls into the first area, which is the area surrounded by the first annular stopper 117, so that the first working chamber V1 can be connected with the port located in the first area. The end of the intermediate tube 212 close to the valve seat 100 is fitted with the second annular stopper 118, and the orthographic projection of the third working chamber V3 on the connecting end surface S5 falls into the second area, which is the area between the first annular stopper 117 and the second annular stopper 118, so that the second working chamber V3 can be connected with the port located in the second area. The end of the outer tube 213 close to the valve seat 100 is fitted with the third annular stopper 119, and the orthographic projection of the fourth working chamber V4 on the connecting end surface S5 falls into the third area so that the fourth working chamber V4 can be connected with the port located in the third area.

[0062] Fig. 9 for Figure 7 The schematic cross-sectional view of the shock absorber along the section line DD is shown in FIG. Figure 1 , Figure 7 and Fig. 9As shown, the valve seat 100 further includes a fifth channel 115 and a sixth channel 116. One port of the fifth channel 115 is located on the communication end surface S5 and in the second region so that the fifth channel 115 is connected to the third working chamber V3. The side wall of the communication portion 110 further includes a third communication side wall S3, and another port of the fifth channel 115 passes through the third communication side wall S3.

[0063] One port of the sixth channel 116 is located on the communication end surface S5 and in the first region so that the sixth channel 116 is connected to the first working chamber V1. For example, the port of the sixth channel 116 located on the communication end surface S5 overlaps with the port of the first channel 111 located on the communication end surface S5. The side wall of the communication portion 110 further includes a fourth communication side wall S4, and another port of the sixth channel 116 passes through the fourth communication side wall S4.

[0064] For example, Fig. 9 As shown, one end of the fifth channel 115 is connected to the third working chamber V3, and the other end of the fifth channel 115 is connected to the pump 280 through the external pipe 271. One end of the sixth channel 116 is connected to the first working chamber V1, and the other end of the sixth channel 116 is connected to the pump 280 through the external pipe 272. Thus, under the action of the pump 280, the rapid response of the shock absorber can be achieved.

[0065] For example, Figure 8 and Fig. 9 As shown, when the pump 280 is in working state, under the action of the pump 280, the fluid in the first working chamber V1 and the second working chamber V2 can be quickly changed, thereby achieving a rapid response of the shock absorber.

[0066] Fig.10 This is a schematic diagram of the structure of another shock absorber provided by an embodiment of the utility model. Fig.10 As shown, the accumulator 260 can also be fixed on the outer side wall of the outer tube 213. For example, fixing the accumulator on the outer side wall of the outer tube can improve the working efficiency of the accumulator. For example, the position of the accumulator on the outer tube can be designed according to the installation environment of the shock absorber to better facilitate the use of space. The embodiment of the utility model does not limit the specific position of the accumulator fixed on the outer side wall of the outer tube.

[0067] The embodiment of the utility model further provides a vehicle. The vehicle includes the shock absorber of any of the above embodiments. For example, the shock absorber can be used in the suspension system of the vehicle. The shock absorber can be connected to other components in the vehicle in various conventional connection methods, which will not be described in detail here. Since the vehicle according to the embodiment of the utility model adopts the above shock absorber, the vehicle can also obtain various technical effects brought by the above shock absorber, which will not be described in detail here.

[0068] There are a few points to note:

[0069] (1) In the drawings of the embodiments of the present invention, only the structures related to the embodiments of the present invention are involved, and other structures can refer to the general design.

[0070] (2) In the absence of conflict, the features of the same embodiment and different embodiments of the present invention may be combined with each other.

[0071] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited to them. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A valve seat for a shock absorber, characterized in that: It includes a connecting portion and a first cylindrical mounting portion and a second cylindrical mounting portion respectively connected to the connecting portion. The first cylindrical mounting portion includes a first mounting cavity, and the first mounting cavity has a first opening away from the communicating portion so that the control valve can be mounted in the first mounting cavity via the first opening. The second cylindrical mounting portion includes a second mounting cavity, and the second mounting cavity has a second opening away from the communicating portion so that the control valve can be mounted in the second mounting cavity via the second opening. The communicating portion includes a first channel, a second channel, a third channel and a fourth channel, the first channel and the second channel are respectively communicated with the first mounting cavity of the first cylindrical mounting portion, the third channel and the fourth channel are respectively communicated with the second mounting cavity of the second cylindrical mounting portion, The first cylindrical mounting portion, the second cylindrical mounting portion and the communicating portion are integrally formed.

2. The valve seat according to claim 1, characterized in that: The side wall of the communication portion includes a first communication side wall and a second communication side wall, the first cylindrical mounting portion is arranged on the first communication side wall, and the second cylindrical mounting portion is arranged on the second communication side wall. The connecting portion further comprises a connecting end surface at one end thereof, ports of the first channel and the second channel away from the first mounting cavity are located on the connecting end surface, and ports of the third channel and the fourth channel away from the second mounting cavity are located on the connecting end surface.

3. The valve seat according to claim 2, characterized in that: A first circular ring limiting portion, a second circular ring limiting portion and a third circular ring limiting portion are also provided on the connecting end surface of the connecting portion, the first circular ring limiting portion is located in the area enclosed by the second circular ring limiting portion, the second circular ring limiting portion is located in the area enclosed by the third circular ring limiting portion, the port of the first channel located on the connecting end surface is located in the first area enclosed by the first circular ring limiting portion, the port of the third channel located on the connecting end surface is located in the second area between the first circular ring limiting portion and the second circular ring limiting portion, and the ports of the second channel and the fourth channel located on the connecting end surface are located in the third area enclosed by the second circular ring limiting portion and the third circular ring limiting portion.

4. The valve seat according to claim 3, characterized in that: The communication portion further includes a fifth channel and a sixth channel, one port of the fifth channel is located on the communication end surface, the side wall of the communication portion further includes a third communication side wall, and another port of the fifth channel passes through the third communication side wall. One port of the sixth channel is located on the communicating end surface, the side wall of the communicating portion further includes a fourth communicating side wall, and another port of the sixth channel passes through the fourth communicating side wall.

5. The valve seat according to claim 4, characterized in that: The port of the sixth channel located at the communication end surface at least partially overlaps with the port of the first channel located at the communication end surface.

6. The valve seat according to claim 4, characterized in that The port of the fifth channel located on the connecting end surface is located in the second area between the first circular limiting portion and the second circular limiting portion, and the port of the sixth channel located on the connecting end surface is located in the first area surrounded by the first circular limiting portion.

7. The valve seat according to any one of claims 1 to 6, characterized in that: The central axes of the first cylindrical mounting portion and the second cylindrical mounting portion are arranged at an angle.

8. A shock absorber, characterized in that: include: A pipe assembly, a piston, a piston rod, a first control valve, a second control valve and a valve seat according to claim 1, Wherein, the pipe assembly comprises an inner pipe, an intermediate pipe and an outer pipe, the intermediate pipe is sleeved in the outer pipe, the inner pipe is sleeved in the intermediate pipe, and the pipe assembly has a first end and a second end opposite to each other along the axial direction thereof; The piston is located in the inner tube and divides the cavity of the inner tube into a first working cavity and a second working cavity, the first working cavity is closer to the first end of the tube assembly than the second working cavity; the piston rod is connected to the piston and extends to the outside of the tube assembly via the second working cavity; the valve seat is arranged at the first end of the tube assembly; the first control valve is arranged in the first installation cavity of the valve seat, and the second control valve is arranged in the second installation cavity of the valve seat; the cavity between the intermediate tube and the inner tube is the third working cavity, the third working cavity is connected to the second working cavity, and the cavity between the intermediate tube and the outer tube is the fourth working cavity, The first channel is communicated with the first working chamber so that the first working chamber is communicated with the first installation chamber, the second channel is communicated with the fourth working chamber so that the fourth working chamber is communicated with the first installation chamber, so that the first working chamber is communicated with the fourth working chamber via the first control valve in the first installation chamber; the third channel is communicated with the third working chamber so that the third working chamber is communicated with the second installation chamber, the fourth channel is communicated with the fourth working chamber so that the fourth working chamber is communicated with the second installation chamber, so that the third working chamber is communicated with the fourth working chamber via the second control valve in the second installation chamber, The shock absorber further includes an accumulator, which is located outside the outer side wall of the outer tube, the outer tube is located outside the space surrounded by the outer peripheral wall of the accumulator, and the accumulator is communicated with the fourth working chamber.

9. The shock absorber according to claim 8, characterized in that The first control valve includes a first one-way throttle valve, which includes a first one-way opening channel and a first throttle channel; the second control valve includes a second one-way throttle valve, which includes a second one-way opening channel and a second throttle channel; The two ends of the first throttling channel are respectively connected to the first channel and the second channel, the two ends of the first one-way opening channel are respectively connected to the first channel and the second channel, and the first one-way opening channel is configured to open when the fluid flows from the fourth working chamber to the first working chamber. The two ends of the second throttling channel are connected to the third channel and the fourth channel respectively, the two ends of the second one-way opening channel are connected to the third channel and the fourth channel respectively, and the second one-way opening channel is configured to open when the fluid flows from the fourth working chamber to the third working chamber.

10. The shock absorber according to claim 8 or 9, characterized in that: The connecting portion includes a connecting end surface at one end thereof, ports of the first channel and the second channel away from the first mounting cavity are located on the connecting end surface, and ports of the third channel and the fourth channel away from the second mounting cavity are located on the connecting end surface, A first circular ring limiting portion, a second circular ring limiting portion and a third circular ring limiting portion are further provided on the connecting end surface of the connecting portion, the first circular ring limiting portion is located in the area surrounded by the second circular ring limiting portion, the second circular ring limiting portion is located in the area surrounded by the third circular ring limiting portion, the port of the first channel located on the connecting end surface is located in the first area surrounded by the first circular ring limiting portion, the port of the third channel located on the connecting end surface is located in the second area between the first circular ring limiting portion and the second circular ring limiting portion, the ports of the second channel and the fourth channel located on the connecting end surface are located in the third area surrounded by the second circular ring limiting portion and the third circular ring limiting portion, The end of the inner tube close to the valve seat is fitted with the first circular ring limiting portion, and the orthographic projection of the first working chamber on the connecting end surface falls into the first region so that the first working chamber is connected with the port located in the first region; the end of the intermediate tube close to the valve seat is fitted with the second circular ring limiting portion, and the orthographic projection of the third working chamber on the connecting end surface falls into the second region so that the third working chamber is connected with the port located in the second region; the end of the outer tube close to the valve seat is fitted with the third circular ring limiting portion, and the orthographic projection of the fourth working chamber on the connecting end surface falls into the third region so that the fourth working chamber is connected with the port located in the third region.

11. The shock absorber according to claim 10, characterized in that The communication portion further includes a fifth channel and a sixth channel, one port of the fifth channel is located on the communication end surface and in the second region so that the fifth channel is connected to the third working chamber, the side wall of the communication portion further includes a third communication side wall, and another port of the fifth channel passes through the third communication side wall. One port of the sixth channel is located on the connecting end surface and in the first region to connect the sixth channel with the first working chamber. The side wall of the connecting portion further includes a fourth connecting side wall. Another port of the sixth channel passes through the fourth connecting side wall.

12. The shock absorber according to claim 8 or 9, characterized in that: The accumulator is fixed on the outer side wall of the outer tube, or the accumulator is connected to the outer tube through a pipeline.

13. A vehicle, characterized in that: Comprising a shock absorber according to any one of claims 8-12.

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