Damping-adjustable shock absorber

Abstract

The utility model 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] This application relates to the field of vibration damping equipment technology, and more specifically, to a damper with adjustable damping. Background Technology

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

[0003] Specifically, traditional passive front forks have non-adjustable damping force, resulting in poor adaptability; while mechanically adjustable front forks offer some improvement, adjustment is inconvenient, and parameters are preset, preventing automatic adjustment. These shock absorbers have slow response times and struggle to absorb energy quickly under high-frequency vibrations or large impacts, affecting vehicle handling stability. During acceleration, cornering, and braking, the damping force cannot be dynamically adjusted, easily leading to excessive pitch and roll angles. Furthermore, in off-road or uneven terrain, they cannot guarantee good wheel-to-ground contact and cannot effectively filter out minor vibrations, which are directly transmitted to the vehicle and driver. Under large impacts, insufficient cushioning results in excessive vehicle vibration, impacting driving comfort. Utility Model Content

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

[0005] To achieve the above objectives, this application provides a damping adjustable shock absorber, comprising:

[0006] The damper body has a cylinder storing a fluid pressure medium and a piston that is slidably sealed in the cylinder, the piston dividing the internal chamber of the cylinder into a first working chamber and a second working chamber.

[0007] A flow control valve is installed on the piston at one end inside the cylinder. When the flow control valve is opened, the first working chamber and the second working chamber are connected. During the extension and retraction of the shock absorber body, the fluid pressure medium enters the second working chamber from the first working chamber through the flow control valve or enters the first working chamber from the second working chamber through the flow control valve. The flow control valve can control the flow rate of the fluid pressure medium.

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

[0009] In an optional implementation, it further includes:

[0010] The movable plug slides and seals with the inner wall of the oil cylinder. The movable plug separates the internal cavity of the oil cylinder into a gas chamber near the second working chamber. The gas chamber stores compressed gas.

[0011] During the extension of the damper 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 plug moves along a first direction, which is along the axial direction of the cylinder and from the second working chamber to the first working chamber.

[0012] During the shortening process of the damper 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 includes a rod portion and a plug portion, the plug portion slidingly sealingly engaging with the inner wall of the cylinder, the plug portion dividing the internal chamber of the cylinder into a first working chamber and a second working chamber, the flow control valve being disposed on the plug portion, one end of the rod portion being connected to the plug portion, and the other end of the rod portion extending out of the 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 cylinder is a tube with openings at both ends, a first sealing seat is provided on the cylinder near the opening of the first working chamber, and a second sealing seat is provided on the cylinder near the opening of the second working chamber.

[0016] A first elastic element is sleeved on the rod segment of the rod body located in the first working chamber. The first elastic element is located between the plug body and the first sealing seat. During the shortening process of the damper body, the plug body moves toward the first sealing seat, and the plug body and the first sealing seat compress the first elastic element. The first elastic element applies a reaction force to the plug body.

[0017] In an optional embodiment, a first damping ring is provided at one end of the first elastic member near the first sealing seat, and a second damping ring is provided at one end of the first elastic member near the plug body.

[0018] A first buffer vibration-absorbing element is provided on the end face of the first damping ring near the first sealing seat;

[0019] A second buffer vibration absorber is provided on the end face of the second damping ring near the plug body.

[0020] In an optional implementation, it further includes:

[0021] A sleeve is fitted over the oil cylinder, and there is a gap between the outer wall of the oil cylinder and the inner wall of the sleeve, which forms a cooling chamber in which a heat exchange medium is stored.

[0022] In an optional implementation, it further includes:

[0023] A dustproof sleeve is fitted onto the end of the sleeve near the first working chamber. The inner wall of the dustproof sleeve is in sliding sealing fit with the outer wall of the sleeve. The dustproof sleeve is connected to the piston component in a driving connection.

[0024] The cooling chamber is connected to the internal chamber of the dustproof sleeve. The heat exchange medium is stored in the cooling chamber and part of the internal chamber of the dustproof sleeve. During the extension and retraction of the damper body, the inner wall of the dustproof sleeve drives the heat exchange medium to flow.

[0025] In an optional implementation, it further includes:

[0026] The limiting tube has annular protrusions at both ends and is located on the sliding path of the dustproof sleeve. During the shortening process of the damper body, the limiting tube is used to limit the extreme stroke of the dustproof sleeve.

[0027] In an optional implementation, it further includes:

[0028] A buffer seat is disposed on the inner end face of the dustproof sleeve. The movement of the dustproof sleeve drives the buffer seat to move. The limiting tube is located on the movement path of the buffer seat. The buffer seat is located between the dustproof sleeve and the limiting tube. During the shortening process of the vibration damper body, the dustproof sleeve abuts against the limiting tube through the buffer seat. The buffer seat is used to absorb the vibration of the dustproof sleeve and the limiting tube.

[0029] In an optional implementation, it further includes:

[0030] Mounting base, the hydraulic cylinder is fixedly mounted on the mounting base, and the mounting base is provided with an assembly structure.

[0031] This application incorporates an environmental parameter acquisition device and a flow control valve, enabling real-time acquisition of environmental parameters. Based on these parameters, the flow control valve automatically adjusts the damping of the shock absorber body, ensuring optimal performance under various riding conditions. By reducing vibration and impact on the frame and rider, the shock absorber helps extend the frame's lifespan and lowers maintenance and replacement costs. The automatic adjustment function of the shock absorber reduces the rider's workload, allowing them to focus more on vehicle control, reducing operational errors, and thus improving driving safety.

[0032] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 A cross-sectional view from one perspective of one embodiment of a damping adjustable shock absorber provided for the purposes of this application;

[0035] Figure 2 A partial structural cross-sectional view from one perspective of one embodiment of a damping adjustable shock absorber provided for the purposes of this application;

[0036] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0037] Figure 4 for Figure 2 A magnified view of a section at point B in the middle;

[0038] Figure 5 for Figure 2 A magnified view of a section at point C.

[0039] icon:

[0040] 100 - Shock absorber body; 110 - Piston assembly; 112 - Rod body; 114 - Plug body; 120 - Hydraulic cylinder; 122 - First working chamber; 124 - Second working chamber;

[0041] 210-Flow control valve; 220-Moving 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 element; 320-First damping ring; 330-Second damping ring; 340-External wiring. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0043] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0044] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0045] This application provides an adjustable damping shock absorber (hereinafter referred to as "shock absorber") that can be applied to vehicles such as motorcycles and bicycles. For example, a motorcycle has a frame, one end of which is mounted on the frame and the other end is connected to a wheel. During operation, the shock absorber can absorb vibrations transmitted from the wheel to the frame, thereby improving rider comfort. Furthermore, compared to mechanically adjustable shock absorbers that require manual damping adjustment by the rider, the shock absorber can adjust the damping force in real time, saving rider energy and allowing them to focus on driving and road conditions, thus improving driving safety. The shock absorber can adjust the damping force in real time according to environmental parameters to absorb vibrations transmitted from the wheel to the frame and rider to a greater extent, further improving comfort.

[0046] like Figures 1 to 2 As shown, the vibration damper provided in the embodiments of this application includes a vibration damper body 100, a flow control valve 210, and an environmental parameter acquisition device.

[0047] The shock absorber body 100 has a cylinder 120 storing a fluid pressure medium and a piston 110 that is slidably sealed within the cylinder 120. The piston 110 is connected to the vehicle body via a transmission, and the cylinder 120 is connected to the wheel via a transmission. The shock absorber body 100 can absorb vibrations transmitted from the wheel to the vehicle body.

[0048] Fluid pressure mediums can transmit pressure, such as gas pressure mediums or liquid pressure mediums; among them, gas pressure mediums are such as air, nitrogen or oxygen, which have the advantages of being easy to replenish and inexpensive; liquid pressure mediums are such as water, hydraulic oil, lubricating oil, water-glycol hydraulic fluid, etc., which have the advantages of being incompressible, heat exchange and lubrication.

[0049] like Figure 2 and Figure 4 As shown, the piston 110 divides the internal 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 the piston 110 at one end inside the cylinder 120. When the flow control valve 210 is opened, it can connect the first working chamber 122 and the second working chamber 124.

[0051] During the elongation of the damper 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 shortening process of the damper 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 rate of the fluid pressure medium, thereby adjusting the damping force of the damper body 100. For example, the degree of valve opening of the flow control valve 210 is proportional to the flow rate 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 based on the acquired environmental parameters.

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

[0056] For example, environmental parameters are characteristic values ​​that describe or measure the surrounding environment. The environmental parameters acquired by the environmental parameter acquirer can be environmental parameters outside the vehicle or environmental parameters inside the vehicle. Environmental parameters outside the vehicle include, for example, road surface bump or depression data parameters, road surface slope parameters, etc.; environmental parameters inside the vehicle include, for example, vehicle state parameters, such as driving mode, vehicle speed, wheel vibration parameters, or vehicle body falling acceleration parameters, etc.; the environmental parameter acquirer is, for example, radar, image sensor, CPU, accelerometer, speed sensor, displacement sensor, etc. In some embodiments, the environmental parameter acquirer integrates a control module, which is, for example, a central processing unit (CPU), a programmable logic controller (PLC), or an electronic device with logic control functions.

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

[0058] For example, when a rider is riding a motorcycle uphill, the wheel leaves the ground and then touches it back down. If the shock absorber is not adjusted, the frame and the rider will experience a greater impact. If the environmental parameter acquisition device detects that the wheel has lost contact with the ground (detection method, for example, by acquiring the acceleration of the vehicle's descent), it will increase the opening degree of the flow control valve 210. 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 will increase. The shock absorber body 100 will rebound and extend faster. Therefore, when the wheel touches the ground, the shock absorber body 100 will have a greater shortening stroke, and the shock absorber body 100 will absorb more vibration during the shortening process. Therefore, compared to the unadjusted shock absorber body 100, the shock absorber body 100 adjusted by the environmental parameter acquisition device will absorb more vibration, the rider and the frame will experience less vibration impact, the rider's experience will be better, and the frame's service life will be extended.

[0059] When the rider lands after a jump, the environmental parameter acquisition device detects the wheel contacting the ground (the detection method is, for example, acquiring the change value of the vehicle's falling acceleration), and reduces the opening degree of the valve core of the flow control valve 210 based on the detection result. When the shock absorber body 100 shortens after the wheel lands, 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 its limit stroke increases. Therefore, the duration of vibration absorption by the shock absorber body 100 is increased, and the vibration absorption capacity of the shock absorber body 100 is improved.

[0060] For example, when a rider is driving a motorcycle on a raised road surface, the wheel height will first increase and then decrease, causing the shock absorber body 100 to first shorten and then extend. The height of the raised area is H. If the motorcycle uses a regular shock absorber, the rider will experience vibrations transmitted from the wheel, and the rider's body height will be approximately (HA), where A is the shortening amount of the regular shock absorber. If the shock absorber of this application is used, the rider's body height will be approximately (HB), where B is the shortening amount of the shock absorber body 100 provided by this application. Because the shock absorber body 100 of this application can increase the shortening speed, the shortening amount B of the shock absorber body 100 provided by this application per unit time is greater than the shortening amount of the regular shock absorber. Therefore, (HA) > (HB). So, after using the shock absorber provided by this application, the rider's body height when riding over a raised area is smaller, resulting in better comfort.

[0061] Furthermore, compared to mechanically adjustable shock absorbers where riders manually adjust the damping, the shock absorber of this application can also improve riding safety. During riding, if the rider still needs to manually adjust the shock absorber, it will prevent the rider from concentrating on controlling the vehicle and observing road conditions, which can easily lead to operational errors. However, if the shock absorber provided by this application is used, the environmental parameter acquisition device can acquire environmental parameters and adjust the damping force of the shock absorber body 100, saving the rider's energy, allowing the rider to concentrate more 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; to reduce the degree of foaming of the fluid pressure medium, such as Figures 1 to 3 As shown, in one embodiment, the damper further includes a movable plug 220.

[0063] like Figure 2 and Figure 3 As shown, the movable plug 220 slides and seals with the inner wall of the cylinder 120. The movable plug 220 separates the internal cavity of the cylinder 120 into a gas chamber 222 near the second working chamber 124. The gas chamber 222 stores compressed gas.

[0064] During the extension of the damper body 100, the piston 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 more of the piston 110 extends from the first working chamber 122, the total volume of solid matter 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 moves along the first direction under the push of the compressed gas (the first direction is along the axis of the cylinder 120 and from the second working chamber 124 to the first working chamber 122), 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 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. As more volume of the piston 110 enters the first working chamber 122, the total volume of the solid material 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), increasing the size of the second working chamber 124, which allows the piston 110 to smoothly enter the cylinder 120, thereby enabling the shock absorber body 100 to shorten smoothly.

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

[0067] The plug body 114 slides and seals with the inner wall of the cylinder 120. The plug body 114 divides the internal chamber of the cylinder 120 into a first working chamber 122 and a second working chamber 124. The flow control valve 210 is provided 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 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 cylinder 120 to accommodate the fluid pressure medium.

[0069] The flow control valve 210 is a solenoid valve, and the stem portion 112 is a hollow structure. An external wiring 340 for the flow control valve 210 is disposed within the hollow cavity of the stem portion 112. Exemplarily, a portion of the external wiring 340 is disposed within the hollow cavity of the stem portion 112, while the other end of the external wiring 340 is located outside the hollow cavity of the stem portion 112. Exemplarily, the other end of the external wiring 340 is electrically connected to an environmental parameter acquisition device, which provides electrical power to the flow control valve 210. In other embodiments, the other end of the external wiring 340 is electrically connected to both the environmental parameter acquisition device and a power storage module.

[0070] For example, an energy storage module is configured by arranging multiple energy storage stacks, which are energy storage cells arranged in a predetermined direction.

[0071] Energy storage units can be, for example, secondary batteries such as nickel-metal hydride batteries or lithium-ion batteries. Energy storage units can use either liquid or solid electrolytes. Alternatively, an energy storage unit can also be configured as a single capacitor capable of storing electricity.

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

[0073] For example, the first sealing seat 280 is provided with a mating through hole, the rod body 112 passes through the mating through hole of the first sealing seat 280, and the outer peripheral surface of the rod body 112 slides and seals with the inner wall of the mating through hole.

[0074] A first elastic element 310 is sleeved on the rod segment of the rod body 112 located in the first working chamber 122. The first elastic element 310 is located between the plug body 114 and the first sealing seat 280. The first elastic element 310 is capable of telescoping and rebounding. For example, the first elastic element 310 includes, but is not limited to, a helical spring, a butterfly spring, a leaf spring, a steel leaf spring, a rubber spring, an air spring, etc.

[0075] During the shortening process of the damper body 100, the rod part 112 slides and drives the plug part 114 to move towards the first sealing seat 280. The plug part 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 part 114. The first elastic member 310 promotes the movement of the rod part 112 and the plug part 114 towards the second chamber, thereby shortening the damper body 100.

[0076] To reduce the impact of the first elastic element 310 on the plug body 114 and the first sealing seat 280, such as Figure 1 and Figure 2 As shown, in one embodiment, a first damping ring 320 is provided at one end of the first elastic member 310 near the first sealing seat 280, and a second damping ring 330 is provided at one end of the first elastic member 310 near the plug portion 114.

[0077] A first damping element is provided on the end face of the first damping ring 320 near the first sealing seat 280. Exemplarily, the first damping element is a flexible washer or flexible block fixedly disposed on the first sealing seat 280.

[0078] A second damping element is provided on the end face of the second damping ring 330 near the plug portion 114. Exemplarily, the second damping element is a flexible washer or flexible block fixedly disposed on the second sealing seat 290.

[0079] For example, the flexible block disposed on the first buffer vibration absorber and / or the second buffer vibration absorber includes one or more flexible block structures. When there are two or more flexible block structures, the flexible block structures can be disposed at equal intervals around the circumference of the rod body 112.

[0080] For example, 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 / man-made fibers, etc.

[0081] During the extension and retraction of the shock absorber body 100, some mechanical energy is converted into internal energy. The fluid pressure medium in the first working chamber 122 and the second working chamber 124, as well as the compressed gas in the gas chamber 222, will generate heat. To promote the cooling of the fluid pressure medium and compressed gas in the cylinder 120 and maintain stable performance, such as... Figures 2 to 4 As shown, in one embodiment, the shock absorber further includes a sleeve 230, which is sleeved outside the cylinder 120. There is a gap between the outer wall of the cylinder 120 and the inner wall of the sleeve 230, forming a cooling chamber 232, in which a heat exchange medium is stored.

[0082] For example, the heat exchange medium may be water, heat transfer oil, ethylene glycol, propylene glycol, or air.

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

[0084] If the outer peripheral surface of the hydraulic cylinder 120 is in direct contact with the external environment, the hydraulic cylinder 120 is easily bumped, which increases the probability of damage to the shock absorber body. In addition, the outer peripheral surface area of ​​the hydraulic cylinder 120 is small, the contact area between the hydraulic cylinder 120 and the external environment is small, and the heat dissipation speed of the hydraulic 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] To prevent dust and other debris from contaminating the damper body 100 and to improve the cooling effect on the damper body 100, such as Figure 1 and Figure 2 As shown, in one embodiment, the shock absorber further includes a dustproof sleeve 240; exemplaryly, the dustproof sleeve 240 is a sleeve structure with one end open and the other end closed.

[0086] The dustproof sleeve 240 has an open end that is fitted onto the sleeve 230 near the first working chamber 122. The inner wall of the dustproof sleeve 240 and the outer wall of the sleeve 230 are in sliding sealing fit. The other end of the dustproof sleeve 240 is connected to the piston 110 for transmission. For example, Figure 5 As shown, the inner end face of the other end of the dustproof sleeve 240 is connected to the rod part 112 of the piston component 110, so that the dustproof sleeve 240 can drive the piston component 110 to extend and slide, or the piston component 110 can drive the dustproof sleeve 240 to extend 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 protects the rod body 112 from impacts and debris. The cylinder 120 is located in the chamber of the sleeve 230, which also protects the rod body 112 from impacts and debris.

[0088] like Figure 2 and Figure 5As shown, the cooling chamber 232 is connected to the internal chamber of the dustproof sleeve 240. The cooling chamber 232 and part of the internal chamber of the dustproof sleeve 240 store heat exchange medium. During the extension and retraction of the damper 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. This allows the heat exchange medium, which is at a relatively low temperature, to better contact the outer wall of the oil cylinder 120 during the flow process, thereby improving the cooling effect.

[0089] To prevent excessive shrinkage of the damper body 100 and to better maintain the damper's elasticity and rebound effect, such as Figure 2 and Figure 5 As shown, in one embodiment, the damper further includes a limiting tube 250 located on the sliding path of the dustproof sleeve 240. During the movement of the dustproof sleeve 240 along the second direction, the limiting tube 250 can limit the limit stroke of the dustproof sleeve 240 to limit the limit shortening position of the dustproof sleeve 240, thereby limiting the limit shortening length of the damper body 100.

[0090] The function of the limiting tube 250 is as follows: During the shortening process of the damper body 100, the dustproof sleeve 240 and the rod part 112 move along the second direction. The movement of the rod part 112 along the second direction drives the plug part 114 to move along the second direction. During the movement of the dustproof sleeve 240 along the second direction, the inner end face will abut against the limiting tube 250. The limiting tube 250 stops the dustproof sleeve 240 from continuing to move along the second direction, thereby causing the dustproof sleeve 240 to reach the shortening limit position. The limiting tube 250 limits the rod part 112 and the plug part 114 through the dustproof sleeve 240, thereby limiting the maximum shortening amount of the damper body. The greater the length of the limiting tube 250 along the first direction, the smaller the maximum shortening amount of the damper body 100. The smaller the length of the limiting tube 250 along the first direction, the greater the maximum shortening amount of the damper body 100.

[0091] For example, the two ends of the limiting tube 250 are provided with annular protrusions. The protrusions can increase the contact area between the limiting tube 250 and the first sealing seat 280, and can also increase the contact area between the limiting tube 250 and the dustproof sleeve 240. This prevents the contact area between the limiting tube 250 and the first sealing seat 280 and the dustproof sleeve 240 from being too small, which would result in excessive pressure on the contact surface. This avoids collisions and improves mechanical life.

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

[0093] To further reduce the impact force between the limiting tube 250 and the dustproof sleeve 240, such 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 face of the dustproof sleeve 240 and sleeved on the rod body portion 112. The buffer seat 260 can be fixedly connected to the inner end face of the dustproof sleeve 240 or to the outer peripheral surface of the rod body portion 112, and the fixed connection method is, for example, welding, snap-fitting, bolting, or riveting.

[0094] The movement of the dustproof sleeve 240 causes 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 damper body 100, the dustproof 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 dustproof sleeve 240 and the limiting tube 250.

[0095] Furthermore, compared to the dustproof sleeve 240 directly abutting against the limiting tube 250, the dustproof sleeve 240 abutting against the limiting tube 250 through the buffer seat 260 can further increase the contact area, thereby further weakening the impact force and improving the service life.

[0096] To better match the shock absorbers with the vehicle, such as Figure 1 and Figure 2 As shown, in one embodiment, the shock absorber further includes a mounting base 270, and the hydraulic cylinder 120 is fixedly mounted on the mounting base 270; exemplaryly, the mounting base 270 is provided with a mounting groove, and the hydraulic cylinder 120, the second sealing seat 290 and the sleeve 230 are fixedly mounted on the mounting groove of the mounting base 270.

[0097] The mounting base 270 is provided with an assembly structure that provides a mounting base for mounting the wheel. For example, the assembly structure may be a mounting through hole. The mounting base 270 enables the shock absorber body to be connected to the wheel drive, and the dust sleeve 240 or the rod portion 112 to be connected to the vehicle body drive, thereby achieving the connection between the shock absorber and the vehicle body.

[0098] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0099] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A damping-adjustable vibration damper, characterized in that, include: The damper body (100) has a cylinder (120) storing a fluid pressure medium and a piston (110) slidably sealed in the cylinder (120), the piston (110) dividing the internal chamber of the cylinder (120) into a first working chamber (122) and a second working chamber (124); A flow control valve (210) is installed on the piston (110) at one end inside the cylinder (120). When the flow control valve (210) is opened, the first working chamber (122) and the second working chamber (124) are connected. During the extension and retraction of the damper 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) can control the flow rate of the fluid pressure medium. An 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 vibration damper according to claim 1, characterized in that, Also includes: The movable plug (220) slides and seals with the inner wall of the oil cylinder (120). The movable plug (220) separates a gas chamber (222) at one end of the internal cavity of the oil cylinder (120) near the second working chamber (124). The gas chamber (222) stores compressed gas. During the extension of the damper body (100), the piston (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). The movable plug (220) moves along a first direction, which is along the axial direction of the cylinder (120) and from the second working chamber (124) to the first working chamber (122). During the shortening process of the damper body (100), the piston (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). The movable plug (220) moves in a second direction, which is the opposite of the first direction.

3. The damping adjustable vibration damper according to claim 1, characterized in that, The piston component (110) includes a rod portion (112) and a plug portion (114). The plug portion (114) is slidably sealed to the inner wall of the cylinder (120). The plug portion (114) divides the internal chamber of the cylinder (120) into a first working chamber (122) and a second working chamber (124). The flow control valve (210) is disposed on the plug portion (114). One end of the rod portion (112) is connected to the plug portion (114), and the other end of the rod portion (112) extends out of the cylinder (120) from the first working chamber (122). The flow control valve (210) is a solenoid valve, the rod part (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 part (112).

4. The damping adjustable vibration damper according to claim 3, characterized in that, The oil cylinder (120) is a tube 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 element (310) is sleeved on the rod segment of the rod body (112) located in the first working chamber (122). The first elastic element (310) is located between the plug body (114) and the first sealing seat (280). During the shortening process of the damper body (100), the plug body (114) moves toward the first sealing seat (280), and the plug body (114) and the first sealing seat (280) compress the first elastic element (310). The first elastic element (310) applies a reaction force to the plug body (114).

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

6. The damping adjustable vibration damper according to claim 1, characterized in that, Also includes: A sleeve (230) is sleeved outside the oil cylinder (120). There is a gap 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.

7. The damping adjustable vibration damper according to claim 6, characterized in that, Also includes: A dustproof sleeve (240) is sleeved on the sleeve (230) at one end near the first working chamber (122). The inner wall of the dustproof sleeve (240) is in sliding sealing fit with the outer wall of the sleeve (230). The dustproof sleeve (240) is connected to the piston (110) in a transmission connection. The cooling chamber (232) is connected to the internal chamber of the dustproof sleeve (240). The cooling chamber (232) and part of the internal chamber of the dustproof sleeve (240) store the heat exchange medium. During the extension and retraction of the damper body (100), the inner wall of the dustproof sleeve (240) drives the heat exchange medium to flow.

8. The damping adjustable vibration damper according to claim 7, characterized in that, Also includes: The limiting tube (250) has annular protrusions at both ends. The limiting tube (250) is located on the sliding path of the dustproof sleeve (240). During the shortening process of the damper body (100), the limiting tube (250) is used to limit the extreme stroke of the dustproof sleeve (240).

9. The damping adjustable vibration damper according to claim 8, characterized in that, Also includes: A buffer seat (260) is disposed on the inner end face 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). The buffer seat (260) is used to absorb the vibration of the dustproof sleeve (240) and the limiting tube (250).

10. The damping-adjustable vibration damper according to claim 1, characterized in that, Also includes: Mounting base (270), the oil cylinder (120) is fixedly mounted on the mounting base (270), and the mounting base (270) is provided with an assembly structure.

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