Damping-adjustable shock absorber

Abstract

The invention relates to the technical field of damping equipment, in particular to a damping-adjustable shock absorber which comprises a shock absorber body, a flow control valve and an environmental parameter acquirer. The shock absorber body is provided with an oil cylinder and a piston piece, and the piston piece divides an inner cavity of the oil cylinder into a first working cavity and a second working cavity. The flow control valve is installed at the end, located in the oil cylinder, of the piston piece, and the flow control valve can control the flow of the fluid pressure medium. And the environmental parameter acquirer controls the flow control valve according to the acquired environmental parameters. According to the shock absorber, the environment parameter acquirer and the flow control valve are arranged, the environment parameters can be acquired in real time, and therefore the flow control valve automatically adjusts damping of the shock absorber body according to the parameters, and the optimal performance of the shock absorber body can be kept under different driving conditions. The operation burden of a rider is relieved through the automatic adjusting function of the shock absorber, the rider can control the vehicle more intensively, operation errors are reduced, and therefore the driving safety is improved.

Description

Technical Field

[0001] The present application relates to the technical field of vibration reduction equipment, and in particular to a vibration reducer with adjustable damping. Background Art

[0002] After years of development, motorcycle front fork shock absorber technology has now entered a stage of diversified applications. The mainstream motorcycle front fork shock absorbers on the market are mainly passive front forks and mechanical valve adjustment front forks. Passive front forks are widely used due to their simple structure and low cost, but they lack dynamic adjustment capabilities when facing complex and changeable road conditions and are difficult to adapt to different driving needs. Although the mechanical valve adjustment front fork achieves a certain degree of damping flexibility through manual adjustment, it still cannot meet the requirements of real-time adjustment.

[0003] Specifically, the damping force of traditional passive front forks cannot be adjusted and has poor adaptability. Although the mechanically adjustable front fork has been improved, it is inconvenient to adjust, and the parameters are preset and cannot be adjusted automatically. These shock absorbers have a slow response speed and are difficult to quickly absorb energy under high-frequency vibrations or large impacts, affecting the vehicle's handling stability. During acceleration, turning, braking, etc., the damping force cannot be adjusted dynamically, which can easily lead to excessive pitch angles of the front of the vehicle and excessive roll angles of the body. In addition, in off-road or uneven terrain, it is impossible to ensure good contact between the wheels and the ground, and it is impossible to effectively filter small vibrations. The fine vibrations are directly transmitted to the body and the driver. When faced with large impacts, the buffering performance is insufficient and the body vibrates too much, affecting driving comfort. Summary of the invention

[0004] The purpose of the present application is to provide a shock absorber with adjustable damping, which can automatically adjust the damping force and improve comfort and safety.

[0005] In order to achieve the above object, the present invention provides a shock absorber with adjustable damping, comprising:

[0006] A shock absorber body, the shock absorber body having an oil cylinder storing a fluid pressure medium and a piston member installed in the oil cylinder with a sliding seal, the piston member dividing an inner chamber of the oil cylinder into a first working chamber and a second working chamber;

[0007] a flow control valve, the flow control valve being mounted on the piston member at one end in the oil cylinder, the flow control valve being opened to allow the first working chamber and the second working chamber to communicate with each other, the fluid pressure medium entering the second working chamber from the first working chamber through the flow control valve or entering the first working chamber from the second working chamber through the flow control valve during the extension and contraction process of the shock absorber body, and the flow control valve being able to control the flow of the fluid pressure medium;

[0008] An environmental parameter acquirer, the environmental parameter acquirer is electrically connected to the flow control valve, and the environmental parameter acquirer controls the flow control valve according to the acquired environmental parameters.

[0009] In an optional embodiment, it also includes:

[0010] A movable plug, the movable plug is in sliding sealing cooperation with the inner wall of the oil cylinder, the movable plug separates the inner chamber of the oil cylinder near one end of the second working chamber into a gas chamber, and the gas chamber stores compressed gas;

[0011] During the extension of the shock absorber body, the piston compresses the first working chamber, the fluid pressure medium enters the second working chamber from the first working chamber through the flow control valve, and the movable piston moves along a first direction, which is a direction along the axial direction of the oil cylinder and from the second working chamber to the first working chamber;

[0012] During the shortening of the shock absorber body, the piston compresses the second working chamber, the fluid pressure medium enters the first working chamber from the second working chamber through the flow control valve, and the movable plug moves in a second direction, which is the opposite of the first direction.

[0013] In an optional embodiment, the piston member includes a rod body portion and a plug body portion, the plug body portion is in sliding sealing cooperation with the inner wall of the oil cylinder, the plug body portion divides the internal chamber of the oil cylinder into the first working chamber and the second working chamber, the flow control valve is arranged on the plug body portion, one end of the rod body portion is connected to the plug body portion, and the other end of the rod body portion extends out of the oil cylinder from the first working chamber;

[0014] The flow control valve is a solenoid valve, the rod body is a hollow structure, and the external wiring of the flow control valve is arranged in the hollow cavity of the rod body.

[0015] In an optional embodiment, the oil cylinder is a tube body with openings at both ends, a first sealing seat is provided on the oil cylinder near the opening of the first working chamber, and a second sealing seat is provided on the oil cylinder near the opening of the second working chamber;

[0016] A first elastic member is sleeved on the rod section of the rod body located in the first working chamber, and the first elastic member is located between the plug body and the first sealing seat. During the shortening of the shock absorber body, the plug body moves toward the first sealing seat, and the plug body and the first sealing seat compress the first elastic member, and the first elastic member applies a reaction force to the plug body.

[0017] In an optional embodiment, a first vibration-damping ring is provided on one end of the first elastic member close to the first sealing seat, and a second vibration-damping ring is provided on one end of the first elastic member close to the plug body;

[0018] A first buffer vibration absorbing member is provided on the end surface of the first vibration damping ring close to the first sealing seat;

[0019] A second buffer vibration absorbing member is arranged on the end surface of the second vibration damping ring close to the plug body.

[0020] In an optional embodiment, it also includes:

[0021] A sleeve is sleeved outside the oil cylinder, and a gap is provided between the outer wall of the oil cylinder and the inner wall of the sleeve, wherein the gap forms a cooling chamber, and a heat exchange medium is stored in the cooling chamber.

[0022] In an optional embodiment, it also includes:

[0023] A dustproof sleeve, wherein the dustproof sleeve is sleeved on one end of the sleeve close to the first working chamber, the inner wall of the dustproof sleeve is slidably and sealingly matched with the outer wall of the sleeve, and the dustproof sleeve is drivingly connected to the piston member;

[0024] The cooling chamber is communicated with the inner chamber of the dustproof sleeve. The heat exchange medium is stored in the cooling chamber and part of the inner chamber of the dustproof sleeve. During the expansion and contraction of the shock absorber body, the inner wall of the dustproof sleeve drives the heat exchange medium to flow.

[0025] In an optional embodiment, it also includes:

[0026] A limit tube, both ends of which are provided with annular protrusion structures, the limit tube is located on the sliding path of the dustproof sleeve, and during the shortening process of the shock absorber body, the limit tube is used to limit the limit stroke of the dustproof sleeve.

[0027] In an optional embodiment, it also includes:

[0028] A buffer seat, wherein the buffer seat is arranged on the inner end surface of the dustproof sleeve, the movement of the dustproof sleeve drives the buffer seat to move, the limiting tube is located on the moving path of the buffer seat, the buffer seat is located between the dustproof sleeve and the limiting tube, and during the shortening process of the shock absorber body, the dustproof sleeve abuts against the limiting tube through the buffer seat, and the buffer seat is used to absorb vibrations of the dustproof sleeve and the limiting tube.

[0029] In an optional embodiment, it also includes:

[0030] A mounting seat, the oil cylinder is fixedly arranged on the mounting seat, and an assembly structure is arranged on the mounting seat.

[0031] In this application, an environmental parameter acquirer and a flow control valve are provided, which can acquire environmental parameters in real time, so that the flow control valve can automatically adjust the damping of the shock absorber body according to these parameters, so that it can maintain optimal 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 cost of maintenance and replacement. The automatic adjustment function of the shock absorber reduces the operating burden of the rider, allowing the rider to control the vehicle more attentively, reducing operating errors, and thus improving driving safety.

[0032] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 A cross-sectional view from one perspective of one embodiment of a shock absorber with adjustable damping provided in an embodiment of the present application;

[0035] Figure 2 A cross-sectional view of a partial structure of one embodiment of a shock absorber with adjustable damping provided in an embodiment of the present application from one perspective;

[0036] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0037] Figure 4 for Figure 2 A partial enlarged view of point B in the middle;

[0038] Figure 5 for Figure 2 A partial enlarged view of point C in the middle.

[0039] icon:

[0040] 100- shock absorber body; 110- piston member; 112- rod body; 114- plug body; 120- oil cylinder; 122- first working chamber; 124- second working chamber;

[0041] 210-flow control valve; 220-movable plug; 222-gas chamber; 230-sleeve; 232-cooling chamber; 240-dustproof sleeve; 250-limiting tube; 260-buffer seat; 270-mounting seat; 280-first sealing seat; 290-second sealing seat; 310-first elastic member; 320-first vibration damping ring; 330-second vibration damping ring; 340-external connection. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0043] In the description of this application, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply 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 on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0044] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" 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 a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] The embodiment of the present application provides a shock absorber with adjustable damping (hereinafter referred to as "shock absorber"). The shock absorber can be applied to vehicles such as motorcycles and bicycles. For example, a motorcycle has a body, one end of the shock absorber is arranged on the body, and one end of the shock absorber is connected to a wheel. During driving, the shock absorber of the present application can absorb the vibration transmitted from the wheel to the body, thereby improving the driving comfort of the rider. Moreover, compared with the mechanically adjustable shock absorber that requires the rider to manually adjust the damping, the shock absorber of the present application can adjust the damping force in real time, saving the rider's energy so that the rider can focus on driving and pay attention to the road conditions, thereby improving driving safety. The shock absorber of the present application can adjust the damping force in real time according to environmental parameters to absorb the vibration transmitted from the wheel to the body and the rider to a greater extent, thereby improving comfort.

[0046] like Figure 1 to Figure 2 As shown, the shock absorber provided by the embodiment of the present application includes a shock absorber body 100, a flow control valve 210 and an environmental parameter acquirer.

[0047] The shock absorber body 100 has a cylinder 120 storing a fluid pressure medium and a piston 110 installed in the cylinder 120 with a sliding seal. The piston 110 is connected to the vehicle body in a transmission manner, and the cylinder 120 is connected to the wheel in a transmission manner. The shock absorber body 100 can absorb vibrations transmitted from the wheel to the vehicle body.

[0048] Fluid pressure media can transmit pressure, such as gas pressure transmission media or liquid pressure transmission media; among them, gas pressure transmission media are, for example, air, nitrogen or oxygen, etc., and gas pressure transmission media have the advantages of easy replenishment and low cost; liquid pressure transmission media are, for example, water, hydraulic oil, lubricating oil, water-ethylene glycol hydraulic fluid, etc., and liquid pressure transmission media have the advantages of incompressibility, heat exchange and lubrication.

[0049] like Figure 2 and Figure 4 As shown, the piston member 110 divides the inner chamber of the cylinder 120 into a first working chamber 122 and a second working chamber 124 .

[0050] like Figure 2 and Figure 4 As shown, the flow control valve 210 is installed on one end of the piston 110 located in the cylinder 120 . When the flow control valve 210 is opened, the first working chamber 122 and the second working chamber 124 can be communicated.

[0051] During the extension of the shock absorber body 100 , the fluid pressure medium passes through the flow control valve 210 to enter the second working chamber 124 from the first working chamber 122 .

[0052] During the contraction of the shock absorber body 100 , the fluid pressure medium passes through the flow control valve 210 to enter the first working chamber 122 from the second working chamber 124 .

[0053] The flow control valve 210 can control the flow of the fluid pressure medium, thereby adjusting the damping force of the shock absorber body 100. Exemplarily, the opening degree of the valve core of the flow control valve 210 is proportional to the flow of the fluid pressure medium.

[0054] The environmental parameter acquirer is electrically connected to the flow control valve 210 , and the environmental parameter acquirer controls the flow control valve 210 according to the acquired environmental parameters.

[0055] Exemplarily, the environmental parameter acquirer adjusts the valve core opening degree of the flow control valve 210 according to the acquired environmental parameters, thereby adjusting the flow of the fluid pressure medium.

[0056] Exemplarily, the environmental parameters are, for example, characteristic values ​​describing and measuring the environment. The environmental parameters acquired by the environmental parameter acquirer may be environmental parameters outside the vehicle or environmental parameters inside the vehicle. Environmental parameters outside the vehicle may be, for example, road surface convexity or concave data parameters, road surface slope parameters, etc.; vehicle internal environmental parameters may be, for example, vehicle state parameters, etc., vehicle state parameters may be, for example, driving mode, vehicle speed, wheel vibration parameters, or vehicle body falling acceleration parameters, etc.; environmental parameter acquirers may be, for example, radars, image sensors, CPUs, accelerometers, speed sensors, displacement sensors, etc. In some embodiments, the environmental parameter acquirer is integrated with a control module, and the control module may be, for example, a central processing unit (CPU), a programmable logic control component (PLC), or an electronic device with a logic control function.

[0057] Generally, the environmental parameter acquirer can sense and acquire environmental parameters faster than the rider, and therefore, the opening degree of the valve core of the flow control valve 210 can be adjusted faster through the environmental parameter acquirer.

[0058] For example, when a rider is driving a motorcycle down a slope, the wheel leaves the ground and then touches the ground. If the shock absorber is not adjusted, the frame and the rider will be subjected to a large impact force. If the environmental parameter acquirer detects that the wheel is out of contact with the ground (the detection method is, for example, to obtain the falling acceleration of the vehicle body), the opening degree of the valve core of the flow control valve 210 is increased. When the shock absorber body 100 rebounds and extends, the flow rate of the fluid pressure medium passing through the flow control valve 210 from the first working chamber 122 to the second working chamber 124 increases, and the shock absorber body 100 rebounds and extends faster. Then, when the wheel contacts the ground, the shock absorber body 100 will have a larger shortening stroke, and the shock absorber body 100 will absorb more vibration during the shortening process. Therefore, compared with the unadjusted shock absorber body 100, the shock absorber body 100 adjusted by the environmental parameter acquirer absorbs more vibration, the rider and the frame are subjected to less vibration impact, the rider experience is better, and the service life of the frame will be extended.

[0059] When the rider falls on the slope, the environmental parameter acquirer detects the contact between the wheel and the ground (the detection method is, for example, to obtain the change in the acceleration of the vehicle body falling), and reduces the degree of opening of the valve core of the flow control valve 210 according to the detection result. When the wheel falls to the ground, the shock absorber body 100 shortens, and the flow rate of the fluid pressure medium passing through the flow control valve 210 from the second working chamber 124 to the first working chamber 122 decreases, the damping force of the shock absorber body 100 increases, and the time required for the shock absorber body 100 to shorten to the limit stroke increases, thereby increasing the time for the shock absorber body 100 to absorb vibration, and the ability of the shock absorber body 100 to absorb vibration is improved.

[0060] 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 body 100 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 about (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 about (HB), where B is the shortening of the shock absorber body 100 provided in the present application. Because the shock absorber body 100 of the present application can increase the shortening speed, the shortening amount B of the shock absorber body 100 provided in 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 riding over a bump, and the comfort will be better.

[0061] In addition, compared with a mechanically adjustable shock absorber in which the rider manually adjusts the damping, 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 observing the road conditions, which may easily lead to operational errors. However, if the shock absorber provided by the present application is used, the environmental parameter acquirer can obtain environmental parameters and adjust the damping force of the shock absorber body 100, saving the rider's energy, allowing the rider to concentrate on controlling the vehicle, reducing operational errors, and improving driving safety and comfort.

[0062] When the fluid pressure medium used is a liquid pressure transmission medium, the fluid pressure medium may foam during the expansion and contraction of the shock absorber. In order to reduce the degree of foaming of the fluid pressure medium, such as Figures 1 to 3 As shown, in one embodiment, the shock absorber further includes a movable plug 220 .

[0063] like Figure 2 and Figure 3 As shown, the movable plug 220 is in sliding sealing cooperation with the inner wall of the oil cylinder 120 , and the movable plug 220 separates the inner chamber of the oil cylinder 120 at one end close to the second working chamber 124 into a gas chamber 222 , in which compressed gas is stored.

[0064] During the extension of the shock absorber body 100, the piston member 110 compresses the first working chamber 122, and the fluid pressure medium enters the second working chamber 124 from the first working chamber 122 through the flow control valve 210. Since a larger volume of the piston member 110 extends from the first working chamber 122, the total volume of the solid substances in the first working chamber 122 and the second working chamber 124 is reduced. If the total capacity of the first working chamber 122 plus the second working chamber 124 remains unchanged, the fluid pressure medium will foam. Therefore, the movable plug 220 is moved in the first direction (the first direction is along the axial direction of the oil cylinder 120 and from the second working chamber 124 to the first working chamber 122) under the push of the compressed gas, thereby reducing the total capacity of the first working chamber 122 and the second working chamber 124 and reducing the degree of foaming of the fluid pressure medium.

[0065] During the shortening process of the shock absorber body 100, the piston member 110 compresses the second working chamber 124, and the fluid pressure medium enters the first working chamber 122 from the second working chamber 124 through the flow control valve 210. Since a larger volume of the piston member 110 enters the first working chamber 122, the total volume of the solid matter in the first working chamber 122 and the second working chamber 124 increases, and the pressure of the fluid pressure medium in the first working chamber 122 and the second working chamber 124 increases. The fluid pressure medium in the second working chamber 124 pushes the movable plug 220 to move in the second direction (the second direction is the opposite of the first direction), thereby increasing the second working chamber 124, enabling the piston member 110 to smoothly enter the oil cylinder 120, thereby allowing the shock absorber body 100 to shorten smoothly.

[0066] To realize the operation control and power supply of the flow control valve 210, as Figure 2 and Figure 4 As shown, in one embodiment, the piston member 110 includes a rod body portion 112 and a plug body portion 114 .

[0067] The plug body 114 is in sliding sealing cooperation with the inner wall of the oil cylinder 120 . The plug body 114 divides the inner chamber of the oil cylinder 120 into a first working chamber 122 and a second working chamber 124 . The flow control valve 210 is disposed on the plug body 114 .

[0068] One end of the rod body 112 is connected to the plug body 114 , and the other end of the rod body 112 extends out of the oil cylinder 120 from the first working chamber 122 ; there is a gap between the outer peripheral surface of the rod body 112 and the inner wall of the oil cylinder 120 to accommodate the fluid pressure medium.

[0069] The flow control valve 210 is a solenoid valve, the rod body 112 is a hollow structure, and an external wire 340 of the flow control valve 210 is arranged in the hollow cavity of the rod body 112. Exemplarily, a part of the wire body of the external wire 340 is arranged in the hollow cavity of the rod body 112, and the other end of the external wire 340 is located outside the hollow cavity of the rod body 112. Exemplarily, the other end of the external wire 340 is electrically connected to the environmental parameter acquirer, and the environmental parameter acquirer provides electrical energy for the flow control valve 210. In other embodiments, the other end of the external wire 340 is electrically connected to the environmental parameter acquirer and the power storage module.

[0070] For example, the power storage module is formed by arranging a plurality of power storage stacks, in which power storage cells are arranged in a predetermined direction.

[0071] The power storage unit is, for example, a secondary battery such as a nickel-metal hydride battery or a lithium-ion battery. The power storage unit may use a liquid electrolyte or a solid electrolyte. In addition, the power storage unit may also be a unit capacitor configured to store electricity.

[0072] To facilitate the resetting of the shock absorber body 100, as Figure 1 and Figure 2 As shown, in one embodiment, the oil cylinder 120 is a tube body with openings at both ends, a first sealing seat 280 is provided on the oil cylinder 120 near the opening of the first working chamber 122 , and a second sealing seat 290 is provided on the oil cylinder 120 near the opening of the second working chamber 124 .

[0073] Exemplarily, a matching through hole is provided on the first sealing seat 280 , the rod body portion 112 is inserted into the matching through hole of the first sealing seat 280 , and the outer peripheral surface of the rod body portion 112 is slidably sealed with the inner wall of the matching through hole.

[0074] A first elastic member 310 is sleeved on the rod section of the rod body 112 located in the first working chamber 122, and the first elastic member 310 is located between the plug body 114 and the first sealing seat 280; the first elastic member 310 can be retracted and rebounded, and illustratively, the first elastic member 310 includes but is not limited to: a coil spring, a butterfly spring, a leaf spring, a steel plate spring, a rubber spring, an air spring, etc.

[0075] During the shortening of the shock absorber body 100, the rod body 112 slides and drives the plug body 114 to move toward the first sealing seat 280. The plug body 114 and the first sealing seat 280 compress the first elastic member 310. The first elastic member 310 applies a reaction force to the plug body 114. The first elastic member 310 promotes the movement of the rod body 112 and the plug body 114 toward the second chamber, thereby shortening the shock absorber body 100.

[0076] In order to reduce the impact of the first elastic member 310 on the plug body 114 and the first sealing seat 280, as shown in FIG. Figure 1 and Figure 2 As shown, in one embodiment, a first vibration damping ring 320 is provided on one end of the first elastic member 310 close to the first sealing seat 280 , and a second vibration damping ring 330 is provided on one end of the first elastic member 310 close to the plug body 114 .

[0077] A first buffer vibration absorbing member is disposed on the end surface of the first vibration damping ring 320 close to the first sealing seat 280 . Exemplarily, the first buffer vibration absorbing member is a flexible gasket or a flexible block fixedly disposed on the first sealing seat 280 .

[0078] A second buffer vibration absorbing member is disposed on the end surface of the second vibration damping ring 330 close to the plug body 114. For example, the second buffer vibration absorbing member is a flexible gasket or a flexible block fixedly disposed on the second sealing seat 290.

[0079] Exemplarily, the flexible block disposed on the first buffer and / or the second buffer includes one or more flexible block structures. When there are more than two flexible block structures, the flexible block structures may be equidistantly spaced around the circumference of the rod body 112 .

[0080] Exemplarily, the flexible material used to make the flexible gasket and the flexible block is at least one of the following: sponge, silicone, latex, rubber, polyurethane, polystyrene, natural / artificial fibers, etc.

[0081] During the expansion and contraction process of the shock absorber body 100, part of the mechanical energy will be converted into internal energy, and the fluid pressure medium in the first working chamber 122 and the second working chamber 124 and the compressed gas in the gas chamber 222 will generate heat. In order to promote the cooling of the fluid pressure medium and the compressed gas in the oil cylinder 120 to maintain stable performance, as shown in FIG. Figures 2 to 4 As shown, in one embodiment, the shock absorber further includes a sleeve 230, which is sleeved outside the oil cylinder 120, and a gap is provided between the outer wall of the oil cylinder 120 and the inner wall of the sleeve 230, and the gap forms a cooling chamber 232, in which a heat exchange medium is stored.

[0082] Exemplarily, the heat exchange medium is, for example, water, heat transfer oil, ethylene glycol, propylene glycol or air.

[0083] During the expansion and contraction process of the shock absorber body, the fluid pressure medium in the first working chamber 122 and the second working chamber 124 gradually heats up, and the fluid pressure medium in the first working chamber 122 and the second working chamber 124 transfers heat to the cylinder wall of the oil cylinder 120, causing the cylinder wall of the oil cylinder 120 to heat up, and the cylinder wall of the oil cylinder 120 transfers heat to the heat exchange medium, causing the heat exchange medium to heat up, and the heat exchange medium transfers heat to the tube wall of the sleeve 230, and the outer wall of the sleeve 230 contacts the external environment and transfers heat to the external environment, thereby achieving the purpose of heat dissipation.

[0084] If the outer peripheral surface of the cylinder 120 directly contacts the external environment, the cylinder 120 is easily bumped and the probability of damage to the shock absorber body is increased. In addition, the outer peripheral surface area of ​​the cylinder 120 is small, and the contact area between the cylinder 120 and the external environment is small, and the heat dissipation speed of the cylinder 120 is slow. Therefore, a sleeve 230 with a larger contact area with the external environment is provided to improve the heat dissipation efficiency.

[0085] In order to prevent dust and other debris from contaminating the shock absorber body 100 and to improve the cooling effect of the shock absorber body 100, as Figure 1 and Figure 2 As shown, in one embodiment, the shock absorber further includes a dustproof sleeve 240; illustratively, the dustproof sleeve 240 is a sleeve structure with one end open and the other end closed.

[0086] The dust sleeve 240 has an open end and is sleeved on one end of the sleeve 230 close to the first working chamber 122. The inner wall of the dust sleeve 240 is slidably sealed with the outer wall of the sleeve 230. The other end of the dust sleeve 240 is drivingly connected to the piston member 110. For example, Figure 5 As shown, the inner end surface of the other end of the dust sleeve 240 is transmission-connected to the rod body 112 of the piston member 110, so that the dust sleeve 240 can drive the piston member 110 to telescope and slide, or the piston member 110 can drive the dust sleeve 240 to telescope and slide.

[0087] like Figure 5 As shown, the rod section of the rod body 112 extending out of the cylinder 120 is located in the dustproof sleeve 240, which can protect the rod body 112 from being bumped and disturbed by debris; the cylinder 120 is located in the chamber of the sleeve 230, which can protect the rod body 112 from being bumped and disturbed by debris.

[0088] like Figure 2 and Figure 5As shown, the cooling chamber 232 is connected to the internal chamber of the dustproof sleeve 240, and heat exchange medium is stored in the cooling chamber 232 and part of the internal chamber of the dustproof sleeve 240. During the extension and retraction process of the shock absorber body 100, the inner wall of the dustproof sleeve 240 drives the heat exchange medium to flow, ensuring that the heat exchange medium flows fully, so that the heat exchange medium at a relatively low temperature can better contact the outer wall of the cylinder 120 during the flow process, thereby improving the cooling effect.

[0089] To prevent the length of the shock absorber body 100 from being excessively shrunk, so as to better maintain the telescopic rebound effect of the shock absorber, as shown in FIG. Figure 2 and Figure 5 As shown, in one embodiment, the shock absorber further includes a limit tube 250, which is located on the sliding path of the dust sleeve 240. When the dust sleeve 240 moves along the second direction, the limit tube 250 can limit the maximum stroke of the dust sleeve 240 to limit the maximum shortening position of the dust sleeve 240, thereby limiting the maximum shortening length of the shock absorber body 100.

[0090] The working process of the limiting tube 250 is, for example, as follows: during the shortening process of the shock absorber body 100, the dustproof sleeve 240 and the rod body 112 move along the second direction, and the movement of the rod body 112 along the second direction drives the plug body 114 to move along the second direction. During the movement of the dustproof sleeve 240 along the second direction, the inner end surface will abut against the limiting tube 250, and the limiting tube 250 stops the dustproof sleeve 240 from continuing to move along the second direction, so that the dustproof sleeve 240 reaches the shortened limit position. The limiting tube 250 limits the rod body 112 and the plug body 114 through the dustproof sleeve 240, thereby limiting the maximum shortening of the shock absorber body. The greater the length of the limiting tube 250 along the first direction, the smaller the maximum shortening of the shock absorber body 100, and the smaller the length of the limiting tube 250 along the first direction, the greater the maximum shortening of the shock absorber body 100.

[0091] Exemplarily, an annular protrusion structure is provided at both ends of the limiting tube 250, which can increase the contact area between the limiting tube 250 and the first sealing seat 280, and can increase the contact area between the limiting tube 250 and the dustproof sleeve 240, thereby preventing the contact area between the limiting tube 250 and the first sealing seat 280 and the dustproof sleeve 240 from being too small, resulting in excessive contact surface pressure, avoiding bumps and improving mechanical life.

[0092] To fix the position of the limiting tube 250 , the limiting tube 250 is sleeved on the rod body 112 , and the radial displacement of the limiting tube 250 is limited by the rod body 112 to ensure that the limiting tube 250 can accurately abut the dust sleeve 240 and the first sealing seat 280 .

[0093] To further weaken the impact force between the limiting tube 250 and the dust sleeve 240, as Figure 2and Figure 5 As shown, in one embodiment, the shock absorber further includes a buffer seat 260, which is disposed on the inner end surface of the dust sleeve 240, and the buffer seat 260 is sleeved on the rod body 112. The buffer seat 260 can be fixedly connected to the inner end surface of the dust sleeve 240 or to the outer peripheral surface of the rod body 112, and the fixed connection method is, for example, welding, clamping, bolting or riveting.

[0094] The movement of the dust-proof sleeve 240 drives the buffer seat 260 to move. The limiting tube 250 is located on the moving path of the buffer seat 260. The buffer seat 260 is located between the dust-proof sleeve 240 and the limiting tube 250. During the shortening process of the shock absorber body 100, the dust-proof sleeve 240 abuts against the limiting tube 250 through the buffer seat 260. The buffer seat 260 is used to absorb the vibration of the dust-proof sleeve 240 and the limiting tube 250.

[0095] Moreover, compared with the dust-proof sleeve 240 directly abutting against the limiting tube 250 , the dust-proof sleeve 240 abutting against the limiting tube 250 via the buffer seat 260 can further increase the contact area, so as to further weaken the impact force and increase the service life.

[0096] In order to make the shock absorber better adapt to the vehicle, such as Figure 1 and Figure 2 As shown, in one embodiment, the shock absorber also includes a mounting seat 270, and the cylinder 120 is fixedly arranged on the mounting seat 270; illustratively, a mounting groove is arranged on the mounting seat 270, and the cylinder 120, the second sealing seat 290 and the sleeve 230 are fixedly arranged in the mounting groove of the mounting seat 270.

[0097] The mounting seat 270 is provided with an assembly structure, which provides an installation base for the wheel. For example, the assembly structure is an assembly through hole. Through the provided mounting seat 270, the shock absorber body can be connected to the wheel by transmission, and the dust sleeve 240 or the rod body 112 can be connected to the vehicle body by transmission, thereby realizing the connection between the shock absorber and the vehicle body.

[0098] It should be noted that, in the absence of conflict, the features in the embodiments of this application may be combined with each other.

[0099] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. 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 with adjustable damping, characterized in that: include: A shock absorber body (100), the shock absorber body (100) comprising an oil cylinder (120) storing a fluid pressure medium and a piston member (110) installed in the oil cylinder (120) in a sliding seal, the piston member (110) dividing an internal chamber of the oil cylinder (120) into a first working chamber (122) and a second working chamber (124); a flow control valve (210), the flow control valve (210) being mounted on the piston member (110) at one end located in the oil cylinder (120); the flow control valve (210) being opened to enable the first working chamber (122) and the second working chamber (124) to communicate with each other; during the expansion and contraction of the shock absorber body (100), the fluid pressure medium enters the second working chamber (124) from the first working chamber (122) through the flow control valve (210) or enters the first working chamber (122) from the second working chamber (124) through the flow control valve (210); the flow control valve (210) is capable of controlling the flow of the fluid pressure medium; An environmental parameter acquirer, the environmental parameter acquirer is electrically connected to the flow control valve (210), and the environmental parameter acquirer controls the flow control valve (210) according to the acquired environmental parameters.

2. The damping adjustable shock absorber according to claim 1, characterized in that: Also includes: a movable plug (220), the movable plug (220) being in sliding sealing cooperation with the inner wall of the oil cylinder (120), the movable plug (220) separating an inner chamber of the oil cylinder (120) at one end close to the second working chamber (124) into a gas chamber (222), wherein compressed gas is stored in the gas chamber (222); During the extension of the shock absorber body (100), the piston member (110) compresses the first working chamber (122), the fluid pressure medium enters the second working chamber (124) from the first working chamber (122) through the flow control valve (210), and the movable plug (220) moves in a first direction, wherein the first direction is a direction along the axial direction of the oil cylinder (120) and pointing from the second working chamber (124) to the first working chamber (122); During the shortening of the shock absorber body (100), the piston member (110) compresses the second working chamber (124), the fluid pressure medium enters the first working chamber (122) from the second working chamber (124) through the flow control valve (210), and the movable plug (220) moves in a second direction, which is opposite to the first direction.

3. The damping adjustable shock absorber according to claim 1, characterized in that: The piston member (110) comprises a rod body portion (112) and a plug body portion (114); the plug body portion (114) is in sliding sealing cooperation with the inner wall of the oil cylinder (120); the plug body portion (114) divides the internal chamber of the oil cylinder (120) into the first working chamber (122) and the second working chamber (124); the flow control valve (210) is arranged on the plug body portion (114); one end of the rod body portion (112) is connected to the plug body portion (114); the other end of the rod body portion (112) extends out of the oil cylinder (120) from the first working chamber (122); The flow control valve (210) is a solenoid valve, the rod body (112) is a hollow structure, and the external wiring (340) of the flow control valve (210) is arranged in the hollow cavity of the rod body (112).

4. The damping adjustable shock absorber according to claim 3, characterized in that: The oil cylinder (120) is a tube body with openings at both ends; a first sealing seat (280) is provided on the oil cylinder (120) near the opening of the first working chamber (122); and a second sealing seat (290) is provided on the oil cylinder (120) near the opening of the second working chamber (124); A first elastic member (310) is sleeved on the rod section of the rod body (112) located in the first working chamber (122); the first elastic member (310) is located between the plug body (114) and the first sealing seat (280); during the shortening of the shock absorber body (100), the plug body (114) moves toward the first sealing seat (280); the plug body (114) and the first sealing seat (280) compress the first elastic member (310); and the first elastic member (310) applies a reaction force to the plug body (114).

5. The damping adjustable shock absorber according to claim 4, characterized in that: A first vibration-damping ring (320) is provided on one end of the first elastic member (310) close to the first sealing seat (280), and a second vibration-damping ring (330) is provided on one end of the first elastic member (310) close to the plug body (114); A first buffer vibration absorbing member is provided on the end surface of the first vibration damping ring (320) close to the first sealing seat (280); A second buffer vibration absorbing member is provided on the end surface of the second vibration damping ring (330) close to the plug body (114).

6. The shock absorber with adjustable damping according to claim 1, characterized in that: Also includes: A sleeve (230) is sleeved outside the oil cylinder (120), and a gap is provided between the outer wall of the oil cylinder (120) and the inner wall of the sleeve (230), wherein the gap forms a cooling chamber (232), and a heat exchange medium is stored in the cooling chamber (232).

7. The damping adjustable shock absorber according to claim 6, characterized in that: Also includes: a dustproof sleeve (240), the dustproof sleeve (240) being sleeved on one end of the sleeve (230) close to the first working chamber (122), the inner wall of the dustproof sleeve (240) being in sliding sealing cooperation with the outer wall of the sleeve (230), and the dustproof sleeve (240) being drivingly connected to the piston member (110); The cooling chamber (232) is connected to the internal chamber of the dustproof sleeve (240), and the heat exchange medium is stored in the cooling chamber (232) and a part of the internal chamber of the dustproof sleeve (240). During the extension and retraction process of the shock absorber body (100), the inner wall of the dustproof sleeve (240) drives the heat exchange medium to flow.

8. The shock absorber with adjustable damping according to claim 7, characterized in that: Also includes: A limit tube (250), both ends of which are provided with annular protrusion structures, the limit tube (250) is located on the sliding path of the dustproof sleeve (240), and during the shortening process of the shock absorber body (100), the limit tube (250) is used to limit the limit stroke of the dustproof sleeve (240).

9. The shock absorber with adjustable damping according to claim 8, characterized in that: Also includes: A buffer seat (260), wherein the buffer seat (260) is arranged on the inner end surface of the dustproof sleeve (240), the movement of the dustproof sleeve (240) drives the buffer seat (260) to move, the limiting tube (250) is located on the moving path of the buffer seat (260), the buffer seat (260) is located between the dustproof sleeve (240) and the limiting tube (250), during the shortening process of the shock absorber body (100), the dustproof sleeve (240) abuts against the limiting tube (250) through the buffer seat (260), and the buffer seat (260) is used to absorb the vibration of the dustproof sleeve (240) and the limiting tube (250).

10. The shock absorber with adjustable damping according to claim 1, characterized in that: Also includes: A mounting seat (270), the oil cylinder (120) is fixedly arranged on the mounting seat (270), and an assembly structure is arranged on the mounting seat (270).

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