Push rod assembly of shock absorber valve system, shock absorber valve system and shock absorber

Abstract

The push rod assembly of the shock absorber valve system comprises a push rod piece, a push rod piece, a push rod piece, a push rod piece, a push rod piece and a push rod piece, the push rod piece is internally provided with a flow channel, the first end of the push rod piece is provided with a liquid outlet, and the liquid outlet is communicated with the flow channel; and the valve plate is arranged at the first end of the push rod piece, the valve plate seals the liquid outlet in the first working state, and the valve plate opens the liquid outlet in the second working state. Therefore, on the premise that normal work of the push rod assembly is guaranteed, the functions of preventing a damping medium from flowing back and avoiding energy loss can be achieved without additionally arranging a one-way check valve and the push rod assembly, the assembly production efficiency of a shock absorber valve system and even a shock absorber can be improved, and the production cost is reduced; in addition, due to the fact that the one-way check valve is of a spring and mass ball structure, the arrangement of the one-way check valve is reduced, the spring and the mass ball can be prevented from generating abnormal sound under hydraulic impact, and the NVH performance of a shock absorber valve system and even the shock absorber can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorber valve systems, and particularly relates to a push rod assembly of a shock absorber valve system, a shock absorber valve system and a shock absorber. Background Art

[0002] A shock absorber is provided with a shock absorber valve system, and a push rod is arranged in the shock absorber valve system. The push rod moves along with the action of the shock absorber on the vehicle, so as to promote the flow of the damping medium in the shock absorber and timely discharge the gas inclusions in the damping medium. During reciprocating motion, the push rod assembly needs to ensure the one-way flow of the damping medium and prevent the damping medium from flowing back.

[0003] In the related art, in order to prevent the damping medium from flowing back, the internal structure of the shock absorber valve system is complex, which increases the assembly difficulty. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a push rod assembly of a shock absorber valve system, which can prevent the damping medium from flowing back and has a simple and reliable structure.

[0005] Another object of the utility model is to provide a shock absorber valve system.

[0006] Another object of the utility model is to provide a shock absorber.

[0007] The push rod assembly of the shock absorber valve system according to the embodiment of the utility model includes: a push rod member, a flow channel is arranged in the push rod member, a liquid outlet is arranged at a first end of the push rod member, and the liquid outlet is communicated with the flow channel; a valve plate, the valve plate is arranged at the first end of the push rod member, in a first working state, the valve plate seals the liquid outlet, and in a second working state, the valve plate opens the liquid outlet.

[0008] Thus, on the premise of ensuring the normal operation of the push rod assembly, without additionally arranging a check valve, the push rod assembly can prevent the damping medium from flowing back and avoid energy loss, and has a simple and reliable structure. It can not only improve the assembly production efficiency of the shock absorber valve system and even the shock absorber, reduce the production cost, but also, since the check valve is a spring and mass ball structure, reducing the setting of the check valve can prevent abnormal noises from occurring under hydraulic impact of the spring and mass ball, and can improve the NVH performance of the shock absorber valve system and even the shock absorber.

[0009] In some examples of the present utility model, the push rod assembly of the shock absorber valve system further includes: a pilot valve spool. The push rod member includes a push plate and a push rod body. The push rod body is at least partially sleeved outside the push plate and is axially movable relative to the push plate. Flow channels are respectively arranged in the push rod body and the push plate and are communicated with each other. An outlet is arranged on one side of the push plate away from the push rod body. The pilot valve spool is connected to the push plate, and the valve plate is arranged between the pilot valve spool and the push plate.

[0010] In some examples of the present utility model, the pilot valve spool includes a rod portion and a head portion. One end of the rod portion penetrates through the valve plate and is fixedly connected to the push rod member. The head portion is arranged at the other end of the rod portion. The head portion and the push rod member squeeze and fix the valve plate.

[0011] In some examples of the present utility model, the projection of the head portion on the valve plate is the head projection, and the projection of the outlet on the valve plate is the outlet projection. The outlet projection and the head projection at least partially do not overlap.

[0012] In some examples of the present utility model, there are multiple outlets. The outlet projections of the multiple outlets are located on the circumferential outer side of the head projection.

[0013] In some examples of the present utility model, the valve plate is an elastically deformable metal sheet.

[0014] In some examples of the present utility model, the push plate is recessed towards the side away from the valve plate to form an outlet cavity. In the first working state, the circumferential edge of the valve plate abuts against the circumferential edge of the first end of the push rod member, and the valve plate seals the outlet cavity.

[0015] In some examples of the present utility model, the push plate is provided with a mounting hole, and a first clamping portion is arranged in the mounting hole. The rod portion is provided with a second clamping portion. The rod portion penetrates through the valve plate and extends into the mounting hole so that the first clamping portion and the second clamping portion are clamped and fixed.

[0016] In some examples of the present utility model, one of the first clamping portion and the second clamping portion is a clamping protrusion, and the other is a clamping groove. The clamping protrusion and the clamping groove are in clamping cooperation.

[0017] In some examples of the present utility model, the push plate is provided with an abutting flange corresponding to the circumferential edge of the mounting hole, and the abutting flange abuts against the valve plate.

[0018] The shock absorber valve system according to an embodiment of the present utility model includes: the push rod assembly of the shock absorber valve system described above.

[0019] In some examples of the present utility model, the shock absorber valve system further includes: a pilot valve housing, in which a first accommodation cavity is provided; an electric coil system, which is arranged in the first accommodation cavity and has a second accommodation cavity; a pilot valve spool, which is arranged in the second accommodation cavity, and at least part of the push rod assembly is movably arranged in the pilot valve spool. The pilot valve spool and the push rod assembly divide the second accommodation cavity into a first axial channel, a lower cavity, a second axial channel, a middle cavity, a third axial channel and an upper cavity that are sequentially connected from bottom to top. The pilot valve spool includes an armature, and the armature is connected to the push rod assembly; an overflow valve, which is arranged at an interval on one side of the pilot valve spool away from the electric coil system. The pilot valve spool, the overflow valve and the pilot valve housing jointly define a control cavity. An overflow valve port is formed on the overflow valve, and the push rod assembly selectively closes the overflow valve port so that the control cavity is selectively communicated with the overflow valve port.

[0020] The shock absorber according to an embodiment of the present utility model includes: the shock absorber valve system described above.

[0021] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

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

[0023] Figure 1 is a partial cross-sectional view of the shock absorber according to an embodiment of the present utility model;

[0024] Figure 2 is a cross-sectional view of the push rod assembly of the shock absorber valve system according to an embodiment of the present utility model;

[0025] Figure 3 is an exploded view of the push rod assembly of the shock absorber valve system according to an embodiment of the present utility model;

[0026] Figure 4 is an assembly drawing of a push plate, a valve plate and a pilot valve spool according to an embodiment of the present utility model;

[0027] Figure 5 is an exploded view of a push plate, a valve plate and a pilot valve spool according to an embodiment of the present utility model;

[0028] Figure 6 is a partial cross-sectional view of the push rod assembly of the shock absorber valve system in a first state according to an embodiment of the present utility model;

[0029] Figure 7 is a partial cross-sectional view of the push rod assembly of the shock absorber valve system according to an embodiment of the present utility model in a second state;

[0030] Figure 8 is a cross-sectional view of the push plate according to an embodiment of the present utility model;

[0031] Figure 9 is a cross-sectional view of the pilot valve spool according to an embodiment of the present utility model.

[0032] Reference numerals:

[0033] 1000, shock absorber;

[0034] 100, shock absorber valve system; 200, piston rod; 300, cylinder body; 301, compression chamber; 302, recovery chamber; 400, compression bottom valve;

[0035] 10, push rod assembly;

[0036] 11, push rod member; 111, flow channel; 112, first end; 113, liquid outlet; 114, liquid outlet chamber; 115, mounting hole; 116, first clamping portion; 117, abutting flange; 118, push rod body; 119, push plate; 1191, push plate main body; 1912, connecting rod;

[0037] 12, valve plate;

[0038] 13, pilot valve body; 131, rod portion; 1311, second clamping portion; 132, head;

[0039] 20, pilot valve spool; 21, control chamber; 22, first axial channel; 23, lower chamber; 24, second axial channel; 25, middle chamber; 26, third axial channel; 27, upper chamber; 28, armature;

[0040] 30, pilot valve housing;

[0041] 40, electric coil system;

[0042] 50, overflow valve; 51, overflow valve port. Detailed implementation manners

[0043] The embodiments of the present utility model will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model will be described in detail below.

[0044] Next, refer to Figures 1-9Describe the push rod assembly 10 of the shock absorber valve system 100 according to an embodiment of the present utility model. The push rod assembly 10 of the shock absorber valve system 100 can be applied to the shock absorber valve system 100, and the shock absorber valve system 100 can be applied to the shock absorber 1000.

[0045] Combined with Figure 1 As shown, the shock absorber valve system 100 may mainly include: a push rod assembly 10, a pilot valve housing 30, an electric coil system 40, a pilot valve spool 20, and a relief valve 50. Among them, the push rod assembly 10 is the push rod assembly 10 of the shock absorber valve system 100 hereinafter.

[0046] Specifically, a first accommodation cavity is provided in the pilot valve housing 30, the electric coil system 40 is arranged in the first accommodation cavity, a second accommodation cavity is provided in the electric coil system 40, the pilot valve spool 20 is arranged in the second accommodation cavity, and at least part of the push rod assembly 10 is movably arranged in the pilot valve spool 20. The pilot valve spool 20 and the push rod assembly 10 divide the second accommodation cavity into a first axial channel 22, a lower cavity 23, a second axial channel 24, a middle cavity 25, a third axial channel 26, and an upper cavity 27 that are sequentially connected from bottom to top. The first axial channel 22, the lower cavity 23, the second axial channel 24, the middle cavity 25, the third axial channel 26, and the upper cavity 27 can be used for the flow of damping medium.

[0047] Moreover, the pilot valve spool 20 includes an armature 28, the armature 28 is connected to the push rod assembly 10, the relief valve 50 is spaced apart from the side of the pilot valve spool 20 away from the electric coil system 40, the pilot valve spool 20, the relief valve 50, and the pilot valve housing 30 jointly define a control cavity 21, the control cavity 21 is communicated with the first axial channel 22, a relief valve orifice 51 is provided on the relief valve 50, and the push rod assembly 10 selectively closes the relief valve orifice 51 to enable the control cavity 21 to be selectively communicated with the relief valve orifice 51.

[0048] In this way, when the shock absorber valve system 100 works, the electric coil system 40 can be first energized, the electromagnetic force generated by the electric coil system 40 can drive the armature 28 to move, and since the armature 28 is connected to the push rod assembly 10, that is, the push rod assembly 10 can be driven to move. During the movement of the push rod assembly 10, the damping medium in the upper cavity 27 or the lower cavity 23 can be selectively extruded, so that the damping medium flows between the control cavity 21, the first axial channel 22, the lower cavity 23, the second axial channel 24, the middle cavity 25, the third axial channel 26, and the upper cavity 27 under the action of the extrusion force.

[0049] Combined with Figures 1-7 As shown, the push rod assembly 10 of the shock absorber valve system 100 according to the present utility model may mainly include: a push rod member 11 and a valve plate 12.

[0050] Among them, a flow channel 111 is arranged in the push rod member 11, a liquid outlet 113 is arranged at the first end 112 of the push rod member 11, the liquid outlet 113 is communicated with the flow channel 111, the valve plate 12 is arranged at the first end 112 of the push rod member 11. The valve plate 12 is arranged at the first end 112 of the push rod member 11. In the first working state, the valve plate 12 seals the liquid outlet 113, and in the second working state, the valve plate 12 opens the liquid outlet 113.

[0051] Specifically, the push rod assembly 10 of the shock absorber valve system 100 is applied to the shock absorber valve system 100. By arranging a flow channel 111 in the push rod member 11 and a liquid outlet 113 at the first end 112 of the push rod member 11, the liquid outlet 113 is communicated with the flow channel 111, and the flow channel 111 is located in the upper chamber 27, and the liquid outlet 113 is located in the control chamber 21. In this way, when the push rod assembly 10 moves as the shock absorber 1000 acts on the vehicle, it can promote the flow of the damping medium in the shock absorber 1000 and timely discharge the gas inclusions in the damping medium. Among them, the push rod assembly 10 can be fixed to the armature 28 by riveting, so as to determine the position of the push rod assembly 10 in the shock absorber 1000.

[0052] When performing reciprocating motion, the push rod assembly 10 needs to ensure the one-way flow of the damping medium.

[0053] By arranging the valve plate 12 at the first end 112 of the push rod member 11, the valve plate 12 covers the liquid outlet 113, and the valve plate 12 has a free end. Considering that the valve plate 12 has the ability of elastic deformation, when there is a pressure difference on both sides of the valve plate 12, the valve plate 12 can also selectively open the liquid outlet 113. That is: the push rod assembly 10 has at least a first working state and a second working state. In the first working state, the valve plate 12 seals the liquid outlet 113, and in the second working state, the valve plate 12 opens the liquid outlet 113.

[0054] Specifically, when the electric coil system 40 is energized, the push rod assembly 10 moves downward, and the damping medium in the lower chamber 23 will flow through the second axial channel 24 to the middle chamber 25 due to the pressure. When the electromagnetic coil system 40 is continuously energized, the pressure received by the damping medium continuously increases, and the damping medium in the middle chamber 25 will flow into the upper chamber 27 along the third axial channel 26 until the oil pressure in each chamber reaches equilibrium.

[0055] When the energization level is decreased, the armature 28 drives the push rod assembly 10 to move upward, the volume in the upper chamber 27 decreases. Since the space in the flow channel 111 is sufficient and its pressure is relatively low, the damping medium in the upper chamber 27 will flow into the flow channel 111. When there is enough damping medium in the flow channel 111, due to the internal pressure of the flow channel 111, the valve plate 12 is subjected to a force away from the push rod member 11. When the force is large enough, the valve plate 12 will deform, and a gap will be generated between the outer periphery of the valve plate 12 and the push rod member 11, and the valve plate 12 opens the liquid outlet 113. At this time, the push rod assembly 10 is in the second working state, and the damping medium can flow into the control chamber 21 from this gap, and then will flow along the first axial channel 22 to the lower chamber 23 to compensate the damping medium in the lower chamber 23.

[0056] When the energization level is increased, the pressure of the damping medium in the flow channel 111 will decrease, and the damping medium in the control chamber 21 has a tendency to flow back to the flow channel 111 due to the pressure difference. At this time, the damping medium causes the valve plate 12 to be subjected to a force close to the push rod member 11. The greater the force, the closer the valve plate 12 clings to the push rod member 11, and the valve plate 12 closes the liquid outlet 113. At this time, the push rod assembly 10 is in the first working state, and the damping medium cannot enter the channel from the control chamber 21 through the liquid outlet 113. Thereby, the backflow of the damping medium can be prevented, and the energy loss caused by the backflow can be avoided. At the same time, since the push rod assembly 10 moves upward, the space in the lower chamber 23 becomes larger and the internal pressure decreases, and the damping medium will flow into the lower chamber 23 from the first axial channel 22, so that the lower chamber 23 is replenished with the damping medium.

[0057] Thus, the damping medium can only flow into the control chamber 21 by pushing open the valve plate 12 in one direction. On the premise of ensuring the normal operation of the push rod assembly 10, without additionally setting structures such as a one-way check valve, the push rod assembly 10 can prevent the backflow of the damping medium and avoid energy loss. The structure is simple and reliable. It can not only improve the assembly production efficiency of the shock absorber valve system 100 and even the shock absorber 1000, reduce the production cost, but also since the one-way check valve is a spring and mass ball structure, reducing the setting of the one-way check valve can prevent abnormal noises generated by the spring and mass ball under hydraulic impact, and can improve the NVH performance of the shock absorber valve system 100 and even the shock absorber 1000.

[0058] Combined with Figures 1-9As shown, the push rod assembly 10 of the shock absorber valve system 100 may further include: a pilot valve body 13. The push rod member 11 may mainly include a push plate 119 and a push rod body 118. The push rod body 118 is at least partially sleeved outside the push plate 119 and is axially movable relative to the push plate 119. Flow channels 111 are respectively arranged in the push rod body 118 and the push plate 119 and are connected. An outlet 113 is arranged on the side of the push plate 119 away from the push rod body 118. The pilot valve body 13 is connected to the push plate 119, and the valve plate 12 is arranged between the pilot valve body 13 and the push plate 119.

[0059] Specifically, the pilot valve body 13 is used to selectively block the overflow valve orifice 51 on the overflow valve 50. By making the push rod member 11 include a push plate 119 and a push rod body 118, the push rod body 118 is at least partially sleeved outside the push plate 119 and is axially movable relative to the push plate 119, and by connecting the pilot valve body 13, the valve plate 12 and the push plate 119, in this way, under the action of electromagnetic force, the push rod body 118 can selectively push the pilot valve body 13, the valve plate 12 and the push plate 119 to move downward, or selectively move relative to the pilot valve body 13, the valve plate 12 and the push plate 119, so as to make the structure of the push rod assembly 10 and even the shock absorber valve system 100 simpler on the premise of ensuring that the shock absorber valve system 100 has a pilot function and ensuring the normal operation of the shock absorber valve system 100, and to prevent the reverse flow of the damping medium.

[0060] Among them, the push plate 119 may mainly include a push plate main body 1191 and a connecting rod 1912. The push plate main body 1191 and the connecting rod 1912 are connected on the side away from the push rod body 118. Only by sleeving the push rod body 118 outside the connecting rod 1912, the push rod body 118 can axially move relative to the connecting rod 1912 under the action of the armature 28. The push rod body 118 can selectively axially approach the push plate main body 1191, or selectively axially move away from the push plate main body 1191, that is: the movable setting of the push rod body 118 relative to the push plate 119 can be realized.

[0061] Combined Figures 2-7 As shown, the pilot valve body 13 may mainly include a rod portion 131 and a head portion 132. One end of the rod portion 131 passes through the valve plate 12 and is fixedly connected to the push rod member 11. The head portion 132 is arranged at the other end of the rod portion 131. The head portion 132 and the push rod member 11 squeeze and fix the valve plate 12.

[0062] Specifically, by making the pilot valve body 13 include a head portion 132 and a rod portion 131, the head portion 132 can be used to selectively block the overflow valve orifice 51 on the overflow valve 50, and the rod portion 131 can be used to connect to the push plate 119.

[0063] Further, when assembling the push rod assembly 10, one end of the rod portion 131 can pass through the valve plate 12 and be fixedly connected to the push rod member 11, and the head portion 132 is arranged at the other end of the rod portion 131. In this way, the head portion 132 and the push rod member 11 can squeeze and fix the valve plate 12, enabling the valve plate 12 to be stably arranged at the first end 112, and making the structure of the push rod assembly 10 simpler and more reliable.

[0064] Combined with Figures 2-7 As shown, the projection of the head portion 132 on the valve plate 12 is the head projection, and the projection of the liquid outlet 113 on the valve plate 12 is the liquid outlet projection. The liquid outlet projection and the head projection do not overlap at least partially.

[0065] Specifically, the pilot valve body 13 passes through the valve plate 12 from bottom to top and is connected to the push rod member 11. The head portion 132 of the pilot valve body 13 is located on the lower side of the valve plate 12, and the push rod member 11 is located on the upper side of the valve plate 12. Define the projection of the head portion 132 on the valve plate 12 as the head projection, and the projection of the liquid outlet 113 on the valve plate 12 as the liquid outlet projection. By making the liquid outlet projection and the head projection not overlap at least partially, that is: the head portion 132 does not completely cover the valve plate 12, the outer periphery of the lower surface of the valve plate 12 fits and abuts against the push rod member 11, the outer periphery of the upper surface of the valve plate 12 has no abutment, and the outer periphery of the valve plate 12 is a free end.

[0066] In this way, although the head portion 132 and the push rod member 11 can squeeze and fix the valve plate 12 to seal the liquid outlet 113 with the valve plate 12, considering that the valve plate 12 has the ability of elastic deformation, when there is a pressure difference on both sides of the valve plate 12, the valve plate 12 can also selectively open the liquid outlet 113.

[0067] Further, combined with Figures 2-5 As shown, there are multiple liquid outlets 113, and the liquid outlet projections of the multiple liquid outlets 113 are located on the circumferential outer side of the head projection. Specifically, when the damping medium in the flow channel 111 is sufficient, the damping medium will flow out from the gap between the outer periphery of the valve plate 12 and the push rod member 11. By setting the liquid outlets 113 to be multiple and making the liquid outlet projections of the multiple liquid outlets 113 on the circumferential outer side of the head projection, when the damping medium in the flow channel 111 flows out from the liquid outlets 113, it can be evenly distributed between the outer periphery of the valve plate 12 and the push rod member 11, making the outflow of the damping medium from the push rod assembly 10 more uniform and stable in the circumferential direction, thereby improving the distribution uniformity of the damping medium in the control chamber 21 and enhancing the working performance of the shock absorber valve system 100.

[0068] In some embodiments of the present utility model, the valve plate 12 is an elastically deformable metal sheet. Specifically, the valve plate 12 can be set as an elastically deformable metal sheet, so that when there is a pressure difference between the damping media on both sides of the valve plate 12, the damping media can push the outer periphery of the valve plate 12 to produce elastic deformation, ensuring that the damping media can flow out of the flow channel 111 and into the control cavity 21 normally. When there is no pressure difference between the damping media on both sides of the valve plate 12, the valve plate 12 can recover its elastic deformation, preventing the reverse flow of the damping media, thereby ensuring multiple switches of the push rod assembly 10 between the first state and the second state, ensuring the normal operation of the push rod assembly 10, and extending the service life of the push rod assembly 10.

[0069] Furthermore, making the manufacturing material of the valve plate 12 be metal can select an appropriate stiffness during the design process, ensuring that the deformation of the valve plate 12 caused by the acting force of the damping media is not large. And due to the certain viscosity of the damping media, the throttling effect of the valve plate 12 can be realized, further improving the working performance of the push rod assembly 10.

[0070] Combined with Figures 2-7 As shown, the push plate 119 is recessed toward the side away from the valve plate 12 to form a liquid outlet cavity 114. In the first state, the circumferential edge of the valve plate 12 abuts against the circumferential edge of the first end 112 of the push rod member 11, and the valve plate 12 seals the liquid outlet cavity 114.

[0071] Specifically, the push plate 119 is recessed toward the side away from the valve plate 12, so that a liquid outlet cavity 114 can be formed on the side of the push plate 119 facing the valve plate 12, and the liquid outlet cavity 114 is communicated with the liquid outlet 113. Optionally, the liquid outlet cavity 114 can be annular.

[0072] In the first state, by making the circumferential edge of the valve plate 12 abut against the circumferential edge of the first end 112 of the push rod member 11, the valve plate 12 can naturally seal the liquid outlet cavity 114. After the damping media in the flow channel 111 flows out from the liquid outlet 113, it can be stored in the liquid outlet cavity 114 first, that is: the valve plate 12 can naturally seal the liquid outlet 113.

[0073] Moreover, as the damping media in the liquid outlet cavity 114 gradually increases, the damping media will exert pressure on the valve plate 12. Until the liquid outlet cavity 114 is filled with the damping media, the high-pressure damping media can squeeze the valve plate 12 from all circumferential directions, causing the valve plate 12 to undergo elastic deformation, making the circumferential edge of the valve plate 12 move away from the circumferential edge of the first end 112 of the push rod member 11, so that the valve plate 12 can open the liquid outlet 113, and the push rod assembly 10 switches to the second state. And in the second state, it can make the outflow of the damping media from the push rod assembly 10 more uniform and stable in the circumferential direction, thereby improving the distribution uniformity of the damping media in the control cavity 21 and improving the working performance of the shock absorber valve system 100.

[0074] Combined with Figures 5-8 As shown, the push plate 119 is provided with a mounting hole 115, and a first clamping portion 116 is arranged in the mounting hole 115. A second clamping portion 1311 is arranged on the rod portion 131. The rod portion 131 penetrates through the valve plate 12 and extends into the mounting hole 115 so that the first clamping portion 116 and the second clamping portion 1311 are clamped and fixed.

[0075] Specifically, by providing a mounting hole 115 in the push plate 119 and arranging a first clamping portion 116 in the mounting hole 115, correspondingly, a second clamping portion 1311 is arranged on the rod portion 131. In this way, during assembly, only the rod portion 131 needs to penetrate through the valve plate 12 and extend into the mounting hole 115. When the rod portion 131 extends in place, the first clamping portion 116 and the second clamping portion 1311 can be naturally clamped and fixed, thereby realizing the connection and fixation between the pilot valve body 13 and the push plate 119, enabling the head 132 of the pilot valve body 13 and the push plate 119 to squeeze and fix the valve plate 12, and making the connection and fixation between the pilot valve body 13 and the push plate 119 simpler and more reliable.

[0076] It should be noted that since the pilot valve body 13 is subjected to less force and hardly causes wear, the clamping and fixation between the pilot valve body 13 and the push rod portion 131 can meet the working requirements.

[0077] Furthermore, combined with Figures 5-8 As shown, one of the first clamping portion 116 and the second clamping portion 1311 is a clamping protrusion, and the other is a clamping groove, and the clamping protrusion and the clamping groove are in clamping cooperation. Specifically, by setting one of the first clamping portion 116 and the second clamping portion 1311 as a clamping protrusion and the other as a clamping groove, in this way, only by making the clamping protrusion extend into the clamping groove, the clamping protrusion can be in clamping cooperation with the clamping groove, which can realize the clamping cooperation between the first clamping portion 116 and the second clamping portion 1311. It can not only improve the speed and accuracy of the clamping cooperation between the first clamping portion 116 and the second clamping portion 1311, but also enhance the stability and reliability of the clamping cooperation between the first clamping portion 116 and the second clamping portion 1311.

[0078] Optionally, both the clamping protrusion and the clamping groove can be set as annular, so that the clamping force between the push plate 119 and the pilot valve body 13 is evenly distributed in the circumferential direction, thereby further optimizing the structural design of the first clamping portion 116 and the second clamping portion 1311 and improving the connection stability between the push plate 119 and the pilot valve body 13.

[0079] Combined with Figures 5-9 As shown, the push plate 119 is provided with a contact flange 117 corresponding to the circumferential edge of the mounting hole 115, and the contact flange 117 is in contact and cooperation with the valve plate 12.

[0080] Specifically, by providing an abutting flange 117 at the circumferential edge of the push plate 119 corresponding to the mounting hole 115, the liquid outlet cavity 114 is disposed around the outside of the abutting flange 117, and the abutting flange 117 protrudes from the surface where the liquid outlet 113 is located. After the pilot valve body 13 is fixedly connected to the push rod member 11, the head 132 of the pilot valve body 13 and the abutting flange 117 of the push rod member 11 can squeeze and fix the valve plate 12, so that the force on the valve plate 12 can be more uniform and stable.

[0081] Moreover, this can avoid the elastic deformation of the valve plate 12 caused by the pilot valve body 13 and the push plate 119 when squeezing and fixing the valve plate 12, prevent a gap from existing between the outer periphery of the valve plate 12 and the push plate 119 under the condition of no pressure difference, and further improve the reliability of the push rod assembly 10 of the shock absorber valve system 100.

[0082] Combined with Figure 1 As shown, the shock absorber valve system 100 according to the present invention may mainly include: the push rod assembly 10 of the shock absorber valve system 100 described above. Specifically, the push rod assembly 10 has an anti-backflow function. By applying the push rod assembly 10 to the shock absorber valve system 100, there is no need to additionally provide a check valve in the shock absorber valve system 100, which can make the structure of the shock absorber valve system 100 simpler and more reliable and improve the assembly efficiency of the shock absorber valve system 100.

[0083] The shock absorber according to the present invention may mainly include: the shock absorber valve system 100 described above, which can improve the working performance of the shock absorber 1000 and enhance the product competitiveness of the shock absorber 1000.

[0084] Specifically, the shock absorber 1000 may mainly include a cylinder body 300, a compression bottom valve 400, and a piston rod assembly. The compression bottom valve 400 is disposed at the bottom of the cylinder body 300, and the piston rod assembly divides a compression cavity 301 and a recovery cavity 302 in the cylinder body 300. The piston rod 200 assembly may mainly include: a piston rod 200 and the shock absorber valve system 100 described above, and the shock absorber valve system 100 is connected to one end of the piston rod 200 close to the compression bottom valve 400.

[0085] When the vehicle is running, the piston rod 200 moves up and down in the cylinder body 300, and cooperates with the work of the shock absorber valve system 100 and the compression bottom valve 400 to generate a damping force, thereby realizing the shock absorption and buffering function of the shock absorber 1000, reducing the vibration and impact caused by the road surface, and thus improving the stability and riding comfort of the vehicle.

[0086] In the description of the present utility model, 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", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 therefore should not be construed as a limitation on the present utility model.

[0087] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. 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 utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0088] Although the embodiments of the present utility model 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 principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A push rod assembly of a shock absorber valve system, characterized in that: include: A push rod member (11), wherein a flow channel (111) is provided in the push rod member (11), a first end (112) of the push rod member (11) is provided with a liquid outlet (113), and the liquid outlet (113) is communicated with the flow channel (111); A valve plate (12), wherein the valve plate (12) is arranged at the first end (112) of the push rod (11); in a first working state, the valve plate (12) seals the liquid outlet (113); in a second working state, the valve plate (12) opens the liquid outlet (113).

2. The push rod assembly of the shock absorber valve system according to claim 1, characterized in that: Also includes: The pilot valve body (13), the push rod member (11) includes a push plate (119) and a push rod body (118), the push rod body (118) is at least partially sleeved on the outer side of the push plate (119) and can move axially relative to the push plate (119), the push rod body (118) and the push plate (119) are respectively provided with the flow channel (111) and are connected, the push plate (119) is provided with the liquid outlet (113) on the side away from the push rod body (118), the pilot valve body (13) is connected to the push plate (119), and the valve plate (12) is arranged between the pilot valve body (13) and the push plate (119).

3. The push rod assembly of the shock absorber valve system according to claim 2, characterized in that: The pilot valve body (13) comprises a rod (131) and a head (132); one end of the rod (131) passes through the valve plate (12) and is connected and fixed to the push rod (11); the head (132) is arranged at the other end of the rod (131); the head (132) and the push rod (11) squeeze and fix the valve plate (12).

4. The push rod assembly of the shock absorber valve system according to claim 3, characterized in that: The projection of the head (132) on the valve plate (12) is a head projection, the projection of the liquid outlet (113) on the valve plate (12) is a liquid outlet projection, and the liquid outlet projection and the head projection at least partially do not overlap.

5. The push rod assembly of the shock absorber valve train according to claim 4, characterized in that: There are a plurality of liquid outlets (113), and projections of the liquid outlets of the plurality of liquid outlets (113) are located outside the circumferential direction of the projection of the head.

6. The push rod assembly of the shock absorber valve train according to claim 1, characterized in that: The valve sheet (12) is an elastically deformable metal sheet.

7. The push rod assembly of the shock absorber valve train according to claim 3, characterized in that: The push plate is recessed toward a side away from the valve plate (12) to form a liquid outlet cavity (114). In the first working state, the circumferential edge of the valve plate (12) abuts against the circumferential edge of the first end (112) of the push rod (11), and the valve plate (12) seals the liquid outlet cavity (114).

8. The push rod assembly of the shock absorber valve train according to claim 3, characterized in that: The push plate (119) is provided with a mounting hole (115), a first clamping portion (116) is provided in the mounting hole (115), the rod portion (131) is provided with a second clamping portion (1311), and the rod portion (131) passes through the valve plate (12) and extends into the mounting hole (115), so that the first clamping portion (116) and the second clamping portion (1311) are clamped and fixed.

9. The push rod assembly of the shock absorber valve train according to claim 8, characterized in that: One of the first clamping portion (116) and the second clamping portion (1311) is a clamping protrusion, and the other is a clamping groove, and the clamping protrusion and the clamping groove are clamped and matched.

10. The push rod assembly of the shock absorber valve train according to claim 8, characterized in that: The push plate (119) is provided with an abutment flange (117) at the circumferential edge corresponding to the mounting hole (115), and the abutment flange (117) is abutted and matched with the valve plate (12).

11. A shock absorber valve system, characterized in that: include: A push rod assembly (10) of a shock absorber valve system (100) according to any one of claims 1 to 10.

12. The shock absorber valve system (100) according to claim 11, characterized in that: Also includes: A pilot valve housing (30), wherein a first accommodating chamber is provided in the pilot valve housing (30); An electric coil system (40), the electric coil system (40) being arranged in the first accommodating cavity, and the electric coil system (40) being provided with a second accommodating cavity; A pilot valve core (20), the pilot valve core (20) is arranged in the second accommodating chamber, the push rod assembly (10) is at least partially movably arranged in the pilot valve core (20), the pilot valve core (20) and the push rod assembly (10) divide the second accommodating chamber into a first axial channel (22), a lower chamber (23), a second axial channel (24), a middle chamber (25), a third axial channel (26) and an upper chamber (27) which are connected in sequence from bottom to top, the pilot valve core (20) includes an armature (28), and the armature (28) is connected to the push rod assembly (10); The overflow valve (50) is spaced apart on a side of the pilot valve core (20) away from the electric coil system (40); the pilot valve core (20), the overflow valve (50) and the pilot valve housing (30) jointly define a control chamber (21); the overflow valve (50) is provided with an overflow valve port (51); the push rod assembly (10) selectively closes the overflow valve port (51) so that the control chamber (21) is selectively connected to the overflow valve port (51).

13. A shock absorber, characterized in that: include: The shock absorber valve system (100) according to any one of claims 11 to 12.

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