Shock absorber

Abstract

The invention relates to the field of shock absorption instruments, in particular to a shock absorber which comprises a first pipe, a piston part, a first flow control valve, an environmental parameter acquirer and a reset part. One end of the piston piece is in sliding sealing fit with the inner wall of the working chamber, and the other end of the piston piece extends out of the working chamber; the environmental parameter acquirer is electrically connected with the first flow control valve, and the environmental parameter acquirer acquires environmental parameters to control the opening degree of a valve element of the first flow control valve; in the application, the shock absorber is provided with the environmental parameter acquirer and the first flow control valve, and the environmental parameters inside and outside the vehicle can be sensed and acquired in real time, so that the damping of the shock absorber can be automatically adjusted by the first flow control valve according to the parameters, and the shock absorber can keep the optimal performance under different driving conditions. By reducing vibration impact on the frame and a rider, the shock absorber is favorable for prolonging the service life of the frame, and the maintenance and replacement cost is reduced.

Description

Technical Field

[0001] This application relates to the field of shock-absorbing devices, and more particularly, to a shock absorber. Background Art

[0002] Currently, in the technical field of motorcycle front fork shock absorbers, the pattern is mainly dominated by passive adjustment type and mechanical valve adjustment type. Passive adjustment type front fork shock absorbers, with the simplicity of their structural design and relatively low manufacturing cost, have been widely used in the motorcycle manufacturing industry. Such front fork shock absorbers can provide stable support and shock absorption effects under normal driving conditions, meeting the basic needs of daily riding. However, when faced with complex and changeable road conditions, such as rough mountain roads, sudden bumps or continuous curves, due to the lack of a dynamic adjustment mechanism, passive adjustment type front fork shock absorbers are difficult to adapt to road surface changes in real time, thus affecting the riding comfort and handling stability to a certain extent.

[0003] In contrast, mechanical valve adjustment type front fork shock absorbers have been technically upgraded to a certain extent. By manually adjusting the valve to change the damping characteristics inside the front fork, the product has a certain degree of flexibility. Riders can preset the damping settings of the front fork shock absorber manually according to different riding needs and road conditions to achieve a more ideal shock absorption effect. This design has improved the adaptability and riding experience of motorcycles to a certain extent. However, mechanical valve adjustment front forks still have obvious limitations, that is, their adjustment process requires manual intervention and cannot achieve real-time adjustment according to the road surface conditions. In a rapidly changing riding environment, the lag of manual adjustment may cause riders to be unable to make timely adjustments, thus affecting the smoothness and safety of riding. Summary of the Invention

[0004] The purpose of this application is to provide a shock absorber that can automatically adjust the damping force, improving riding comfort and safety.

[0005] To achieve the above purpose, this application provides a shock absorber, including:

[0006] A first tube, the internal chamber of which is a working chamber storing a fluid pressure medium;

[0007] A piston member, one end of which is in sliding and sealing fit with the inner wall of the working chamber, and the other end of which extends out of the working chamber;

[0008] a first flow control valve, the first flow control valve being in communication with an opening of the first tube, wherein when the piston member and the first tube are moved away from each other to extend the shock absorber, the fluid pressure medium in the working chamber is squeezed by the piston member and discharged through the first flow control valve, and the discharge flow of the fluid pressure medium can be controlled by adjusting the opening degree of the valve core of the first flow control valve;

[0009] An environmental parameter acquirer, the environmental parameter acquirer is electrically connected to the first flow control valve, and the environmental parameter acquirer acquires environmental parameters to control the opening degree of the valve core of the first flow control valve;

[0010] A reset member is drivingly connected to the piston member, and the reset member drives the piston member to reset.

[0011] In an optional embodiment, it also includes:

[0012] a mounting seat, wherein the first flow control valve is mounted on the mounting seat;

[0013] a second tube, wherein the second tube and the first tube are mounted on the mounting seat, the second tube is sleeved outside the first tube and is loosely matched with the first tube, so as to form a sandwich channel between the outer wall of the first tube and the inner wall of the second tube;

[0014] A sealing seat, wherein the sealing seat blocks an end of the second tube away from the mounting seat, the piston member is passed through the sealing seat and cooperates with the sealing seat in a sliding seal, the sealing seat is provided with a connecting channel connecting the working chamber and the interlayer channel, and the first flow control valve is connected to the working chamber through the interlayer channel.

[0015] In an optional embodiment, at an end away from the mounting seat, the axial length of the second tube is greater than the axial length of the first tube;

[0016] The sealing seat includes a seat body and a block body, the seat body and the block body are fixedly connected, the seat body is sealingly fixedly mounted on an opening at one end of the second tube away from the mounting seat, the block body is mounted on an opening at one end of the first tube away from the mounting seat, a connecting channel for connecting the working chamber and the interlayer channel is provided on the block body, the seat body has a matching through hole that passes through the seat body and the block body, the piston member is penetrated at the matching through hole of the sealing seat and is slidingly and sealingly matched with the inner wall of the matching through hole.

[0017] In an optional embodiment, it also includes:

[0018] a third tube, the third tube being mounted on the mounting seat and sleeved outside the second tube, a gap being provided between an inner wall of the third tube and an outer wall of the second tube, the gap forming a cooling chamber;

[0019] A dust-proof sleeve, wherein one end of the dust-proof sleeve having an opening is sleeved on the third tube, the inner wall of the dust-proof sleeve is slidably and sealedly matched with the outer wall of the third tube, the piston is drivingly connected with the dust-proof sleeve, the piston and the dust-proof sleeve move in a direction away from the mounting seat to extend the shock absorber, and the piston and the dust-proof sleeve move in a direction close to the mounting seat to shorten the shock absorber;

[0020] The cooling chamber is communicated with the inner chamber of the dustproof sleeve, a cooling medium is stored in a part of the chamber inside the dustproof sleeve, and during the extension and retraction process of the shock absorber, the inner wall of the dustproof sleeve drives the cooling medium to flow in the cooling chamber.

[0021] In an optional embodiment, the piston member includes a rod body portion and a plug body portion, one end of the rod body portion is located in the working chamber, the other end of the rod body portion extends out of the working chamber, and the plug body portion is installed on one end of the rod body portion located in the working chamber.

[0022] In an optional embodiment, the openings at both ends of the first tube are respectively a first opening and a second opening, the first flow control valve is connected to the first opening, the piston moves in a first direction to discharge the fluid pressure medium from the first opening, and the shock absorber extends;

[0023] The piston moves in a second direction to discharge the fluid pressure medium from the second opening, and the shock absorber shortens; the first direction is a direction along the axial direction of the first tube and pointing from the second opening to the first opening, and the second direction is the opposite direction of the first direction;

[0024] The shock absorber further includes a medium storage container, the medium storage container is communicated with the discharge port of the first flow control valve, and the medium storage container is communicated with the second opening.

[0025] In an optional embodiment, the plug body divides the working chamber into two sub-chambers, the two sub-chambers are respectively a first sub-chamber and a second sub-chamber, the plug body compresses the second sub-chamber when the shock absorber is shortened, and the plug body compresses the first sub-chamber when the shock absorber is extended, and the first flow control valve is connected to the first sub-chamber;

[0026] The medium storage container is a pressure storage container, and the pressure storage container can apply pressure to the fluid pressure medium stored therein, so that the fluid pressure medium is discharged or has a tendency to be discharged;

[0027] A second flow control valve is disposed in the plug body, and the second flow control valve is connected to two sub-chambers of the working chamber;

[0028] The first flow control valve is a one-way valve, which limits the fluid pressure medium in the medium storage container from entering the first sub-chamber through the first flow control valve. During the shortening process of the shock absorber, part of the fluid pressure medium in the second sub-chamber flows into the medium storage container from the second opening, and the other part of the fluid pressure medium enters the first sub-chamber through the second flow control valve.

[0029] In an optional embodiment, the reset element includes:

[0030] The first elastic member is capable of stretching and rebounding, and is drivingly connected to one end of the piston member extending out of the working chamber, and is used to drive the piston member to reset.

[0031] In an optional embodiment, the reset element includes:

[0032] A clamping ring, the clamping ring is fixedly arranged on the piston member and on the rod section located in the working chamber;

[0033] The second elastic member can be retracted and rebounded, the second elastic member is sleeved on the piston member and is located between the retaining ring and the sealing seat, when the shock absorber is extended, the piston member drives the retaining ring to approach the sealing seat, the retaining ring and the sealing seat compress the second elastic member, and the second elastic member applies a reaction force to the piston member through the retaining ring.

[0034] In an optional embodiment, a limit block is fixedly provided on one end of the piston member extending out of the working chamber. During the shortening process of the shock absorber, the piston member drives the limit block to move toward the sealing seat. A flexible vibration absorbing member is provided on the end surface of the limit block close to the sealing seat. After the limit block drives the flexible vibration absorbing member to abut against the sealing seat, the piston member reaches the limit position of the stroke.

[0035] In this application, by adjusting the damping in real time, the shock absorber can automatically adjust according to the driving conditions, effectively weakening the vibrations transmitted from the wheels to the frame and the rider, thus significantly improving the riding comfort and safety. The shock absorber is provided with an environmental parameter acquirer and a first flow control valve, which can sense and obtain the environmental parameters inside and outside the vehicle in real time, such as road surface bumps, depressions, slopes, and vehicle states, etc., so as to automatically adjust the damping of the shock absorber according to these parameters, enabling it to maintain the best performance under different driving conditions. By reducing the vibration impact on the frame and the rider, the shock absorber helps to extend the service life of the frame and reduce the maintenance and replacement costs. The automatic adjustment function of the shock absorber reduces the operation burden on the rider, enabling the rider to concentrate more on controlling the vehicle, reducing operation errors, and thus improving driving safety.

[0036] Other features and advantages of this application will be described in detail in the subsequent specific implementation section. Brief Description of the Drawings

[0037] To more clearly illustrate the technical solutions of the embodiments of this application, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of this application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0038] Figure 1 Structural schematic diagram of one perspective of one embodiment of a shock absorber provided for an embodiment of this application;

[0039] Figure 2 Cross-sectional view of one perspective of one embodiment of a shock absorber provided for an embodiment of this application;

[0040] Figure 3 Cross-sectional view of one use state of a part of one perspective of one embodiment of a shock absorber provided for an embodiment of this application;

[0041] Figure 4 Cross-sectional view of another use state of a part of one perspective of one embodiment of a shock absorber provided for an embodiment of this application;

[0042] Figure 5 Cross-sectional view of a part of one perspective of one embodiment of a shock absorber provided for an embodiment of this application.

[0043] Reference Signs:

[0044] 100 - First Pipe; 110 - Working Chamber; 112 - First Sub-chamber; 114 - Second Sub-chamber; 120 - First Opening; 130 - Second Opening;

[0045] 200 - Second tube;

[0046] 310 - Third tube; 320 - Dust-proof sleeve; 330 - Interlayer channel; 340 - Cooling chamber;

[0047] 400 - Piston part; 410 - Rod body part; 420 - Plug body part;

[0048] 500 - Mounting seat;

[0049] 600 - Sealing seat; 610 - Seat body part; 620 - Block part; 630 - Connection channel;

[0050] 710 - Snap ring; 720 - Limit block; 740 - Medium storage container;

[0051] 810 - First flow control valve; 850 - Second flow control valve;

[0052] 910 - First elastic member; 950 - Second elastic member. Detailed implementation manners

[0053] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. Usually, the components of the embodiments of this application described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0054] In the description of this application, it should be noted that the orientation or positional relationship indicated by terms such as "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship when the product of this application is normally placed. It is only for the convenience of describing this application 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 cannot be understood as a limitation to this application. In addition, terms such as "first", "second", etc. are only used for differential description and cannot be understood as indicating or implying relative importance.

[0055] In the description of this application, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

[0056] Embodiments of the present application provide a shock absorber that can be applied to motorcycles, bicycles, etc., to improve riding comfort. Exemplarily, motorcycles, bicycles, etc. have a frame, and the shock absorber of the present application can be installed on the frame, and the wheels are installed on the frame. During driving, the shock absorber of the present application can automatically and real-time adjust the damping according to the driving conditions to weaken the vibrations transmitted from the wheels to the frame and the rider, thereby improving riding comfort and safety.

[0057] As Figures 1 to 3 shown, the shock absorber includes a first tube 100, a piston member 400, a first flow control valve 810, an environmental parameter acquirer, and a reset member.

[0058] The internal chamber of the first tube 100 is a working chamber 110 storing a fluid pressure medium. The fluid pressure medium is, for example, a gas pressure conduction medium or a liquid pressure conduction medium; among them, the gas pressure conduction medium is, for example, air, nitrogen, or oxygen, etc., and the gas pressure conduction medium has advantages such as easy replenishment and low cost; the liquid pressure conduction medium is, for example, water, hydraulic oil, lubricating oil, water-glycol hydraulic fluid, etc., and the liquid pressure conduction medium has advantages such as incompressibility, heat exchange, and lubrication.

[0059] One end of the piston member 400 is in sliding and sealing fit with the inner wall of the working chamber 110, and the other end of the piston member 400 extends out of the working chamber 110.

[0060] Exemplarily, during use, a front fork is installed on the frame, and two shock absorbers of the present application are symmetrically installed on the front fork. One end of the piston member 400 of the shock absorber extending out of the working chamber 110 is installed on the front fork, and the first tube 100 is connected to the wheel. The fluid pressure medium in the first tube 100 generates a damping force to reduce the vibrations transmitted from the wheels to the frame.

[0061] The first flow control valve 810 is in communication with the opening of the first tube 100. When the piston member 400 and the first tube 100 move away from each other to extend the shock absorber, the fluid pressure medium in the working chamber 110 is squeezed by the piston member 400 and then discharged through the first flow control valve 810. Adjusting the opening degree of the valve core of the first flow control valve 810 can control the discharge flow rate of the fluid pressure medium. Exemplarily, the opening degree of the valve core of the first flow control valve 810 is positively correlated with the discharge flow rate of the fluid pressure medium. If the opening degree of the valve core of the first flow control valve 810 increases, the discharge flow rate of the fluid pressure medium when the shock absorber extends increases, the extension speed of the shock absorber is faster, the rebound effect of the shock absorber is better, and the driver can experience a more "soft" shock absorber.

[0062] Exemplarily, the first flow control valve 810 is a solenoid valve.

[0063] The environmental parameter acquirer is electrically connected to the first flow control valve 810, and the environmental parameter acquirer acquires environmental parameters to control the opening degree of the valve core of the first flow control valve 810.

[0064] Exemplarily, the environmental parameter is, for example, a characteristic value describing and measuring the environment. The environmental parameters acquired by the environmental parameter acquirer can be environmental parameters outside the vehicle or environmental parameters inside the vehicle. The environmental parameters outside the vehicle are, for example, road surface bump or depression data parameters, road surface slope parameters, etc.; the environmental parameters inside the vehicle are, for example, vehicle state parameters, etc. The vehicle state parameters are, for example, driving mode, vehicle speed, wheel vibration parameters or body drop acceleration parameters, etc.; the environmental parameter acquirer is, for example, a radar, an image sensor, a CPU, an accelerometer, a speed sensor, a displacement sensor, etc. In some embodiments, the environmental parameter acquirer is integrated with a control module, and the control module is, for example, a central processing unit (CPU), a programmable logic controller (PLC), or an electronic device with logic control functions.

[0065] The reset member is drivingly connected to the piston member 400, and the reset member drives the piston member 400 to reset.

[0066] Normally, the environmental parameter acquirer can sense and acquire environmental parameters faster than the rider. Therefore, the opening degree of the valve core of the first flow control valve 810 can be adjusted faster through the environmental parameter acquirer. For example, when the rider is driving a motorcycle over a slope, after the wheel leaves the ground and then touches the ground, if the shock absorber is not adjusted, the impact force on the frame and the rider is relatively large. If the environmental parameter acquirer detects that the wheel is separated from the ground contact, the opening degree of the valve core of the first flow control valve 810 is increased, and the discharge flow rate of the fluid pressure medium when the shock absorber extends is increased, and the rebound elongation speed of the shock absorber is faster. Then, when the wheel touches the ground, the shock absorber will have a greater shortening stroke, and the shock absorber absorbs more vibration during the shortening process; therefore, compared with the shock absorber without adjustment, the shock absorber adjusted by the environmental parameter acquirer absorbs more vibration, the vibration impact on the rider and the frame is smaller, the rider experience is better, and the service life of the frame will be extended.

[0067] For another example, when a rider is driving a motorcycle on a bumpy road, the wheel height will first increase and then drop, and the shock absorber will first shorten and then lengthen; the height of the bump is H. If the motorcycle uses an ordinary shock absorber, the rider will be affected by the vibration transmitted by the wheel, and the rider's body will fluctuate by approximately (HA), where A is the shortening of the ordinary shock absorber. If the shock absorber of the present application is used, the rider's body will fluctuate by approximately (HB), where B is the shortening of the shock absorber provided by the present application. Because the shock absorber of the present application can be adjusted to increase the shortening speed, the shortening amount B of the shock absorber provided by the present application is greater than that of the ordinary shock absorber per unit time. Therefore, (HA)>(HB). Therefore, after using the shock absorber provided by the present application, the rider's body will fluctuate less when passing over a bump, and the comfort will be better.

[0068] Moreover, compared with manually adjusting the front fork shock absorber, the shock absorber of the present application can also improve driving safety. During riding, if the rider still needs to manually adjust the shock absorber, the rider will not be able to concentrate on controlling the vehicle and may easily make operational errors. However, if the shock absorber provided by the present application is used, the environmental parameter acquirer can check the environmental parameters and adjust the shock absorber, saving the rider's energy, allowing the rider to concentrate on controlling the vehicle, reducing operational errors, and improving driving safety.

[0069] The first flow control valve 810 is connected to the first pipe 100. In one embodiment, the first flow control valve 810 is connected to the opening of the first pipe 100 through a hose. Different from the above embodiment in which a hose is provided, the first flow control valve 810 and the first pipe 100 can be connected by other technical means. In another embodiment, Figures 1 to 3 As shown, the shock absorber further includes a mounting seat 500 , a second tube 200 and a sealing seat 600 .

[0070] The first flow control valve 810 is fixed on the mounting seat 500 by riveting, clamping, bolting, threading, integral molding or welding.

[0071] Illustratively, the mounting base 500 is connected to a wheel.

[0072] Illustratively, the mounting base 500 provides a mounting base for the first tube 100 and the second tube 200 .

[0073] like Figures 2 to 4As shown, the second tube 200 and the first tube 100 are fixedly installed on the mounting base 500. The second tube 200 is sleeved outside the first tube 100 and is in clearance fit with the first tube 100, so as to form an interlayer channel 330 between the outer wall of the first tube 100 and the inner wall of the second tube 200. This interlayer channel is used for circulating fluid pressure medium. The fixed installation methods of the second tube 200 and the first tube 100 are, for example, riveting, clamping, bolt connection, screw connection, integral molding or welding, etc.

[0074] As Figures 3 to 5 shown, the sealing seat 600 plugs the end of the second tube 200 far from the mounting base 500. The piston member 400 passes through the sealing seat 600 and is in sliding seal fit with the sealing seat 600. A connecting channel 630 communicating the working chamber 110 and the interlayer channel 330 is provided on the sealing seat 600. The first flow control valve 810 is communicated with the working chamber 110 through the interlayer channel 330.

[0075] Figure 4 and Figure 5 Some of the arrows in [Figure] show the flow direction of the fluid pressure medium in the first tube 100 when the shock absorber extends. The arrow on the piston member 400 is used to indicate the movement direction of the piston member 400; when the shock absorber extends, the piston member 400 squeezes the fluid pressure medium in the first tube 100 to flow out. The flowing-out fluid pressure medium enters the interlayer channel 330 from the connecting channel 630, and then enters the first flow control valve 810 from the interlayer channel 330. The flow rate of the fluid pressure medium is controlled by the first flow control valve 810.

[0076] In this application, by installing the first flow control valve 810 on the mounting base 500 and integrating the first tube 100 and the second tube 200 on the mounting base 500 as well, a compact layout of the shock absorber components is achieved, the overall integration is improved, and the installation of the shock absorber on the vehicle is made more concise and convenient.

[0077] The second tube 200 is sleeved outside the first tube 100, and an interlayer channel 330 is formed between them. This design innovatively utilizes the space between the tubes, providing an additional flow path for the fluid pressure medium. This design not only saves space, but also makes the fluid path more concealed and protected, reducing the influence of the outside on the fluid flow.

[0078] For the connecting channel 630 to be able to communicate the interlayer channel 330 and the working chamber 110, as Figure 5 shown, in one embodiment, at the end far from the mounting base 500, the axial length of the second tube 200 is greater than the axial length of the first tube 100.

[0079] The sealing seat 600 includes a seat body 610 and a block body 620; illustratively, the seat body 610 and the block body 620 are connected by welding, clamping, threading, riveting or integral molding. illustratively, the block body 620 is a stepped shaft structure, the large diameter end of the block body 620 is connected to the seat body 610, and the small diameter end of the block body 620 is connected to the first tube 100.

[0080] The seat body portion 610 and the block body portion 620 are fixedly connected. The seat body portion 610 is sealingly fixedly installed at an opening at one end of the second tube 200 away from the mounting seat 500. The block body portion 620 is installed at an opening at one end of the first tube 100 away from the mounting seat 500. A connecting channel 630 for connecting the working chamber 110 and the interlayer channel 330 is provided on the block body portion 620. The seat body portion 610 has a matching through hole that passes through the seat body portion 610 and the block body portion 620. The piston member 400 is penetrated at the matching through hole of the sealing seat 600 and is slidingly sealed with the inner wall of the matching through hole.

[0081] Exemplarily, an oil seal is provided on the inner wall of the mating through hole at the seat body portion 610 .

[0082] In order to realize the cooling of the fluid pressure medium, Figures 1 to 3 As shown, in one embodiment, the shock absorber further includes a third tube 310 and a dust sleeve 320 .

[0083] The third tube 310 is fixedly mounted on the mounting seat 500 by welding, clamping, bolting or riveting, and is sleeved outside the second tube 200 .

[0084] There is a gap between the inner wall of the third tube 310 and the outer wall of the second tube 200 , and the gap forms a cooling chamber 340 .

[0085] The dust sleeve 320 has an open end which is sleeved on the third tube 310, and the inner wall of the dust sleeve 320 is slidably sealed with the outer wall of the third tube 310. The piston 400 is transmission-connected with the dust sleeve 320, so that the piston 400 can drive the dust sleeve 320 to move, or the dust sleeve 320 can drive the piston 400 to move.

[0086] The piston member 400 and the dust sleeve 320 move in a direction away from the mounting seat 500 to extend the shock absorber, and the piston member 400 and the dust sleeve 320 move in a direction close to the mounting seat 500 to shorten the shock absorber.

[0087] The cooling chamber 340 is connected to the inner chamber of the dust sleeve 320. A cooling medium is stored in part of the chamber inside the dust sleeve 320. During the expansion and contraction of the shock absorber, the inner wall of the dust sleeve 320 drives the cooling medium to flow in the cooling chamber 340. The cooling medium is, for example, mineral oil, water, or ethylene glycol aqueous solution.

[0088] In the present application, a cooling chamber 340 is formed by providing a gap between the inner wall of the third tube 310 and the outer wall of the second tube 200, and a cooling medium is stored in a partial chamber of the dust-proof sleeve 320, thereby achieving the cooling of the fluid pressure medium.

[0089] During the telescopic process of the shock absorber, the inner wall of the dust-proof sleeve 320 drives the cooling medium to flow in the cooling chamber 340, enhancing the heat exchange effect of the cooling medium, and thus effectively reducing the temperature of the fluid pressure medium.

[0090] The third tube 310 is sleeved outside the second tube 200, and the dust-proof sleeve 320 is sleeved on the third tube 310. This nested structural design makes the structure of the entire shock absorber more compact and reduces the space occupation.

[0091] The part of the piston member 400 extending outside the working chamber 110 is located in the chamber of the dust-proof sleeve 320. The dust-proof sleeve 320 can effectively protect the piston member 400 from being bumped and damaged, improving the service life and reliability of the piston member 400, and reducing the maintenance and replacement costs caused by the damage of the piston member 400.

[0092] As Figures 2 to 4 shown, in one embodiment, the piston member 400 includes a rod body portion 410 and a plug body portion 420. One end of the rod body portion 410 is located in the working chamber 110, the other end of the rod body portion 410 extends out of the working chamber 110, and the plug body portion 420 is installed on one end of the rod body portion 410 located inside the working chamber 110.

[0093] Exemplarily, the plug body portion 420 is in sliding sealing fit with the interior of the working chamber 110.

[0094] Exemplarily, the end of the rod body portion 410 extending out of the working chamber 110 is drivingly connected to the dust-proof sleeve 320.

[0095] As Figure 3 or Figure 4 shown, in one embodiment, the two ends of the first tube 100 are respectively an first opening 120 and a second opening 130. The first flow control valve 810 is communicated with the first opening 120. When the piston member 400 moves in the first direction, the fluid pressure medium is discharged from the first opening 120, and the shock absorber extends.

[0096] When the piston member 400 moves in the second direction, the fluid pressure medium is discharged from the second opening 130, and the shock absorber shortens; the first direction is the axial direction of the first tube 100 and the direction pointing from the second opening 130 to the first opening 120, and the second direction is the reverse of the first direction.

[0097] The shock absorber further includes a medium storage container 740. The medium storage container 740 is in communication with the liquid discharge port of the first flow control valve 810 and is also in communication with the second opening 130.

[0098] Exemplarily, the end portion of the first tube 100 at the second opening 130 is disposed on the mounting seat 500, and a flow passage for communicating the second opening 130 and the medium storage container 740 is provided on the mounting seat 500.

[0099] When the piston member 400 moves in the first direction, the fluid pressure medium is discharged from the first opening 120, causing the shock absorber to extend. After flowing out from the first opening 120, the fluid pressure medium is discharged into the medium storage container 740 through the first flow control valve 810.

[0100] When the piston member 400 moves in the second direction, the fluid pressure medium is discharged from the second opening 130, causing the shock absorber to shorten. The fluid pressure medium discharged from the second opening 130 flows into the medium storage container 740 through the flow passage on the mounting seat 500.

[0101] Exemplarily, the medium storage container 740 is disposed on the mounting seat 500.

[0102] As Figures 2 to 4 shown, in one embodiment, the plug body portion 420 divides the working chamber 110 into two sub-chambers, namely the first sub-chamber 112 and the second sub-chamber 114. When the shock absorber shortens, the plug body portion 420 compresses the second sub-chamber 114, and when the shock absorber extends, the plug body portion 420 compresses the first sub-chamber 112. The first flow control valve 810 is in communication with the first sub-chamber 112.

[0103] The medium storage container 740 is a pressure storage container, and the pressure storage container can apply pressure to the fluid pressure medium stored therein, causing the fluid pressure medium to be discharged or having a tendency to be discharged. Exemplarily, the medium storage container 740 is, for example, a nitrogen cylinder, a bladder accumulator, etc.

[0104] A second flow control valve 850 is provided in the plug body portion 420, and the second flow control valve 850 is in communication with the two sub-chambers of the working chamber 110.

[0105] The first flow control valve 810 is a one-way valve, and the first flow control valve 810 restricts the fluid pressure medium in the medium storage container 740 from entering the first sub-chamber 112 through the first flow control valve 810.

[0106] As Figure 3As shown, during the shortening process of the shock absorber, the plug body portion 420 squeezes the second sub-chamber 114. Part of the fluid pressure medium in the second sub-chamber 114 flows from the second opening 130 into the medium storage container 740, and another part of the fluid pressure medium enters the first sub-chamber 112 through the second flow control valve 850. If the hydraulic pressure in the first sub-chamber 112 is relatively high (the pressure of the liquid in the first sub-chamber 112 is at least greater than the valve core opening pressure of the first flow control valve 810 plus the reaction pressure exerted by the pressure storage container), the fluid pressure medium entering the first sub-chamber 112 from the second flow control valve 850 will enter the first flow control valve 810 through the sandwich channel 330 and enter the medium storage container 740 from the first flow control valve 810. At the same time, the first flow control valve 810 restricts the fluid pressure medium in the medium storage container 740 from entering the first sub-chamber 112 from the first flow control valve 810, enhancing the damping effect of the shock absorber.

[0107] As Figure 4 shown, during the elongation process of the shock absorber, the plug body portion 420 squeezes the first sub-chamber 112. Part of the fluid pressure medium in the first sub-chamber 112 flows out from the first opening 120, and after passing through the connection channel 630, the sandwich channel 330, and the first flow control valve 810 in sequence, it enters the medium storage container 740. Another part of the fluid pressure medium in the first sub-chamber 112 enters the second sub-chamber 114 through the second flow control valve 850. At the same time, the medium storage container 740 is a pressure storage container, and the fluid pressure medium in the medium storage container 740 enters the second sub-chamber 114 from the second opening 130.

[0108] In some embodiments, the medium storage container 740 is in communication with the first flow control valve 810. The first flow control valve 810 has a one-way conduction channel connecting the sandwich channel 330 and a two-way channel connecting the second opening 130.

[0109] By setting the second flow control valve 850, during the shortening and elongation processes of the shock absorber, it allows the fluid pressure medium to flow between the two sub-chambers, thereby providing a more stable and effective damping effect.

[0110] The first flow control valve 810 acts as a one-way valve to restrict the fluid pressure medium in the medium storage container 740 from entering the first sub-chamber 112 from the first flow control valve 810. This prevents the fluid pressure medium in the medium storage container 740 from directly surging into the first sub-chamber 112 during the elongation of the shock absorber, resulting in unstable damping effects. At the same time, it also ensures that during the shortening of the shock absorber, the fluid pressure medium in the second sub-chamber 114 can be smoothly discharged, further enhancing the damping performance.

[0111] During the shortening of the shock absorber, part of the fluid pressure medium in the second sub-chamber 114 flows into the medium storage container 740, and this part of energy can be stored. When the shock absorber is extended, the fluid pressure medium in the medium storage container 740 enters the working chamber 110 again, realizing energy recovery and utilization.

[0112] like Figure 2 As shown, in one embodiment, the reset member includes a first elastic member 910, which can be retracted and rebounded. The first elastic member 910 is transmission-connected to one end of the piston member 400 extending out of the working chamber 110, and the first elastic member 910 is used to drive the piston member 400 to reset.

[0113] Exemplarily, the first elastic member 910 is a coil spring, and the first elastic member 910 is sleeved on the rod body 410 of the piston member 400. One end of the first elastic member 910 abuts against the sealing seat 600, and the other end of the first elastic member 910 is transmission-connected to the dust sleeve 320. When the first elastic member 910 is extended, the first elastic member 910 can drive the dust sleeve 320 and the rod body 410 to move away from the mounting seat 500. When the first elastic member 910 is shortened, the first elastic member 910 can drive the dust sleeve 320 and the rod body 410 to move toward the mounting seat 500, thereby resetting the piston member 400.

[0114] like Figures 2 to 4 As shown, in one embodiment, the reset member includes a snap ring 710 and a second elastic member 950 .

[0115] The clamping ring 710 is fixedly disposed on the rod section of the piston member 400 located in the working chamber 110 .

[0116] The second elastic member 950 is a coil spring capable of expansion and contraction and rebounding. The second elastic member 950 is sleeved on the piston member 400 and is located between the snap ring 710 and the sealing seat 600. Through the cooperation between the snap ring 710 and the second elastic member 950, when the shock absorber is extended, the piston member 400 (through the plug body 420) drives the snap ring 710 to approach the sealing seat 600, compressing the second elastic member 950. As a coil spring, the second elastic member 950 has the characteristics of expansion and contraction and rebounding, and will exert a reaction force on the snap ring 710, thereby promoting the piston member 400 to quickly and stably return to the initial position after the shock absorber action ends.

[0117] It can be understood that when the first elastic member 910 or the second elastic member 950 is compressed to the limit, it has a limiting effect. When the first elastic member 910 is compressed to the limit, it is the limit travel of the rod body portion 410 and the plug body portion 420 in the second direction, and the length of the shock absorber is shortened to the limit. When the second elastic member 950 is compressed to the limit, it is the limit travel of the rod body portion 410 and the plug body portion 420 in the first direction, and the length of the shock absorber is extended to the limit. This prevents components such as the piston member 400, the rod body portion 410, and the plug body portion 420 from being damaged due to excessive movement, and protects the internal structure and components of the shock absorber.

[0118] As Figures 2 to 4 shown, in one embodiment, a limiting block 720 is fixedly arranged at one end of the piston member 400 extending out of the working chamber 110. During the shortening process of the shock absorber, the piston member 400 drives the limiting block 720 to move towards the sealing seat 600. After the limiting block 720 abuts against the sealing seat 600, the piston member 400 reaches the limit position of the shortening stroke.

[0119] Exemplarily, a flexible vibration-absorbing member is arranged on the end face of the limiting block 720 close to the sealing seat 600. The flexible vibration-absorbing member absorbs the collision vibration between the limiting block 720 and the sealing seat 600, preventing the limiting block 720 from colliding and damaging the sealing seat 600. The flexible vibration-absorbing member is, for example, a nylon gasket, a silicone gasket, etc.

[0120] Exemplarily, the limiting block 720 is an annular stepped sleeve. The limiting sleeve is sleeved on the rod body portion 410, and a clamping groove is arranged on the rod body portion 410. The limiting member is clamped at the clamping groove of the rod body portion 410, so that the limiting block 720 is fixedly installed on the rod body portion 410. In another embodiment, the limiting member is fixedly arranged on the rod body portion 410 by means of threaded fit, bolt fixation, welding, or clamping.

[0121] It should be noted that, without conflict, the features in the embodiments of the present application can be combined with each other.

[0122] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A shock absorber, characterized in that: include: A first tube (100), wherein the inner chamber of the first tube (100) is a working chamber (110) storing a fluid pressure medium; A piston member (400), one end of the piston member (400) being in sliding sealing cooperation with the inner wall of the working chamber (110), and the other end of the piston member (400) extending out of the working chamber (110); a first flow control valve (810), the first flow control valve (810) being in communication with an opening of the first tube (100); when the piston member (400) and the first tube (100) move away from each other to extend the shock absorber, the fluid pressure medium in the working chamber (110) is squeezed by the piston member (400) and discharged through the first flow control valve (810); and the discharge flow rate of the fluid pressure medium can be controlled by adjusting the opening degree of the valve core of the first flow control valve (810); an environmental parameter acquirer, the environmental parameter acquirer being electrically connected to the first flow control valve (810), the environmental parameter acquirer acquiring environmental parameters to control the opening degree of the valve core of the first flow control valve (810); A reset member is in driving connection with the piston member (400), and the reset member drives the piston member (400) to reset.

2. The shock absorber according to claim 1, characterized in that: Also includes: A mounting seat (500), wherein the first flow control valve (810) is mounted on the mounting seat (500); a second tube (200), wherein the second tube (200) and the first tube (100) are mounted on the mounting seat (500), and the second tube (200) is sleeved outside the first tube (100) and is loosely matched with the first tube (100), so that an interlayer channel (330) is formed between the outer wall of the first tube (100) and the inner wall of the second tube (200); A sealing seat (600), wherein the sealing seat (600) blocks an end of the second tube (200) away from the mounting seat (500), the piston member (400) is passed through the sealing seat (600) and cooperates with the sealing seat (600) in a sliding and sealing manner, and the sealing seat (600) is provided with a connecting channel (630) connecting the working chamber (110) and the interlayer channel (330), and the first flow control valve (810) is connected to the working chamber (110) through the interlayer channel (330).

3. The shock absorber according to claim 2, characterized in that: At an end away from the mounting seat (500), the axial length of the second tube (200) is greater than the axial length of the first tube (100); The sealing seat (600) comprises a seat body (610) and a block body (620), wherein the seat body (610) and the block body (620) are fixedly connected, and the seat body (610) is sealingly fixedly mounted on an opening at one end of the second tube (200) away from the mounting seat (500), and the block body (620) is mounted on an opening at one end of the first tube (100) away from the mounting seat (500). A connecting channel (630) for connecting the working chamber (110) and the interlayer channel (330) is provided on the block body (620), and the seat body (610) has a matching through hole penetrating the seat body (610) and the block body (620), and the piston member (400) is penetrated at the matching through hole of the sealing seat (600) and is slidingly and sealingly matched with the inner wall of the matching through hole.

4. The vibration absorber according to claim 2, characterized in that: Also includes: a third tube (310), the third tube (310) being mounted on the mounting seat (500) and sleeved outside the second tube (200), a gap being provided between an inner wall of the third tube (310) and an outer wall of the second tube (200), the gap forming a cooling chamber (340); a dustproof sleeve (320), wherein one end of the dustproof sleeve (320) having an opening is sleeved on the third tube (310), the inner wall of the dustproof sleeve (320) is slidably sealed with the outer wall of the third tube (310), the piston (400) is drivingly connected with the dustproof sleeve (320), the piston (400) and the dustproof sleeve (320) move in a direction away from the mounting seat (500) to extend the shock absorber, and the piston (400) and the dustproof sleeve (320) move in a direction close to the mounting seat (500) to shorten the shock absorber; The cooling chamber (340) is connected to the internal chamber of the dustproof sleeve (320), and a cooling medium is stored in part of the chamber inside the dustproof sleeve (320). During the extension and retraction process of the shock absorber, the inner wall of the dustproof sleeve (320) drives the cooling medium to flow in the cooling chamber (340).

5. The vibration absorber according to claim 1, characterized in that: The piston member (400) comprises a rod body portion (410) and a plug body portion (420), one end of the rod body portion (410) is located in the working chamber (110), the other end of the rod body portion (410) extends out of the working chamber (110), and the plug body portion (420) is installed on one end of the rod body portion (410) located in the working chamber (110).

6. The shock absorber according to claim 5, characterized in that The first tube (100) has two openings at both ends, namely a first opening (120) and a second opening (130); the first flow control valve (810) is in communication with the first opening (120); the piston member (400) moves in a first direction to discharge the fluid pressure medium from the first opening (120), and the shock absorber extends; The piston member (400) moves in a second direction so that the fluid pressure medium is discharged from the second opening (130), and the shock absorber is shortened; The first direction is a direction along the axial direction of the first tube (100) and pointing from the second opening (130) to the first opening (120), and the second direction is the opposite direction of the first direction; The shock absorber further comprises a medium storage container (740), wherein the medium storage container (740) is in communication with a discharge port of the first flow control valve (810), and the medium storage container (740) is in communication with the second opening (130).

7. The shock absorber according to claim 6, characterized in that The plug body (420) divides the working chamber (110) into two sub-chambers, the two sub-chambers being respectively a first sub-chamber (112) and a second sub-chamber (114); when the shock absorber is shortened, the plug body (420) compresses the second sub-chamber (114); when the shock absorber is extended, the plug body (420) compresses the first sub-chamber (112); and the first flow control valve (810) is connected to the first sub-chamber (112); The medium storage container (740) is a pressure storage container, and the pressure storage container can apply pressure to the fluid pressure medium stored therein, so that the fluid pressure medium is discharged or has a tendency to be discharged; A second flow control valve (850) is disposed in the plug body (420), and the second flow control valve (850) is connected to the two sub-chambers of the working chamber (110); The first flow control valve (810) is a one-way valve, which limits the fluid pressure medium in the medium storage container (740) from entering the first sub-chamber (112) through the first flow control valve (810). During the shortening process of the shock absorber, part of the fluid pressure medium in the second sub-chamber (114) flows into the medium storage container (740) from the second opening (130), and another part of the fluid pressure medium enters the first sub-chamber (112) through the second flow control valve (850).

8. The shock absorber according to claim 1, characterized in that The reset element comprises: A first elastic member (910), the first elastic member (910) is capable of stretching and rebounding, the first elastic member (910) is drivingly connected to one end of the piston member (400) extending outside the working chamber (110), and the first elastic member (910) is used to drive the piston member (400) to reset.

9. The vibration absorber according to claim 2, characterized in that: The reset element comprises: a clamping ring (710), the clamping ring (710) being fixedly arranged on the piston member (400) on a rod section located in the working chamber (110); A second elastic member (950), the second elastic member (950) is capable of stretching and rebounding, the second elastic member (950) is sleeved on the piston member (400) and is located between the retaining ring (710) and the sealing seat (600), when the shock absorber is extended, the piston member (400) drives the retaining ring (710) to approach the sealing seat (600), the retaining ring (710) and the sealing seat (600) compress the second elastic member (950), and the second elastic member (950) applies a reaction force to the piston member (400) through the retaining ring (710).

10. The vibration absorber according to claim 2, characterized in that: A limit block (720) is fixedly provided on one end of the piston member (400) extending outside the working chamber (110); during the shortening process of the shock absorber, the piston member (400) drives the limit block (720) to move toward the sealing seat (600); A flexible vibration absorbing member is provided on the end surface of the limit block (720) close to the sealing seat (600), and after the limit block (720) drives the flexible vibration absorbing member to abut against the sealing seat (600), the piston member (400) reaches the stroke limit position.

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