Damping device and vehicle

Abstract

The embodiment of the utility model relates to the technical field of vehicles, and discloses a damping device and a vehicle. The damping device comprises a stator assembly, a rotor assembly, a bag skin and an additional cavity. The stator assembly comprises a shell and a stator coil, and the stator coil is located on the inner wall of the shell. The rotor assembly comprises a rotor framework and a magnet, the magnet is arranged on the rotor framework, the rotor assembly is slidably connected to the stator assembly in the axial direction of the shell, at least part of the rotor assembly is located in the shell, and a first cavity is formed by the end of the rotor assembly and the shell. In the axial direction of the shell, the bag skin is arranged at the end, opposite to the first cavity, of the shell, and a second cavity communicated with the first cavity is formed by the bag skin. The additional chamber is communicated with the first chamber, and the volume of the additional chamber is adjustable. According to the damping device provided by the invention, the damping device can obtain a continuously changing rigidity curve, so that the use requirements of different environments can be met.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to a shock absorption device and a vehicle. Background Technology

[0002] Vehicles have become an indispensable means of transportation in people's daily lives. Air spring suspension and electromagnetic damper technology are key technologies in vehicle suspension systems, which can improve the comfort, handling, and adaptability of vehicles through intelligent adjustment.

[0003] Air springs utilize the compressibility of air to achieve elastic support and vibration isolation. In related technologies, the volume of the air spring's main chamber is fixed, which easily leads to a single stiffness curve for the air spring. Consequently, the stiffness of the air spring can only vary along a fixed curve, making it difficult to meet the driving needs of different environments. Utility Model Content

[0004] In view of this, the present application provides a shock absorber and a vehicle. The shock absorber is provided with an additional chamber. By setting the volume of the additional chamber to be adjustable, the shock absorber can obtain a continuously changing stiffness curve, thereby meeting the usage requirements of different environments.

[0005] To achieve the above objectives, the technical solution of this application embodiment is implemented as follows:

[0006] In a first aspect, embodiments of this application provide a shock-absorbing device, which includes:

[0007] A stator assembly, the stator assembly including a housing and stator coils, the stator coils being located on the inner wall of the housing;

[0008] A mover assembly, comprising a mover frame and a magnet, the magnet being disposed on the mover frame along the axial direction of the housing, the mover assembly being slidably connected to the stator assembly, at least a portion of the mover assembly being located within the housing, and the end of the mover assembly forming a first chamber with the housing;

[0009] A bladder, along the axial direction of the outer shell, is disposed at the end of the outer shell facing away from the first chamber, and the bladder forms a second chamber communicating with the first chamber;

[0010] An additional chamber, which is connected to the first chamber, has an adjustable volume.

[0011] The shock absorption device provided in this application includes a stator assembly comprising a stator coil and a mover assembly comprising a magnet. Therefore, when current flows through the stator coil, a magnetic field environment can be generated around it. The magnetic field generated by the stator coil can interact with the magnetic field of the magnet (e.g., a permanent magnet) to produce an electromagnetic force. This electromagnetic force can control the movement of the suspension system, thereby achieving vibration damping. Therefore, through the interaction between the stator coil and the magnet, the damping force can be adjusted in real time via current to improve vehicle comfort and handling.

[0012] The shock absorber in this embodiment includes an additional chamber. Since the volume of the additional chamber is adjustable, it can be configured arbitrarily according to requirements. Therefore, the shock absorber can achieve stepless adjustment of vehicle height and stiffness, rather than being limited to multi-level adjustment, thereby increasing the adjustable range of stiffness and damping of the air suspension. Users can match the stiffness of the shock absorber according to different driving environments to achieve different driving experiences.

[0013] It should be noted that, in this embodiment, the stator coil is wound on the inner wall of the housing, occupying a large radial space inside the housing. The magnet is disposed on the inner wall of the mover frame, also occupying a large radial space inside the housing. Since the mover assembly moves along the axial direction of the housing, by setting the first chamber and the second chamber at opposite ends of the axial direction of the housing, the space along the axial direction of the stator assembly and the mover assembly can be reasonably utilized, thus preventing the overall size of the shock absorption device from becoming too large.

[0014] Furthermore, the outer shell is flexible. By providing a second chamber in the outer shell, and having the second chamber connected to the first chamber, the shape of the outer shell can change during the movement of the mover assembly, thereby achieving dynamic sealing of the second chamber.

[0015] In one possible implementation of this application, the moving part assembly has an internal cavity, and the additional chamber is located in the internal cavity.

[0016] In one possible implementation of this application, the mover assembly includes a mover cover along the axial direction of the housing. The mover cover is disposed at the end of the mover frame facing the inner wall of the housing. An internal cavity is formed between the mover cover and the mover frame. The mover cover and the housing form the first chamber.

[0017] The first chamber and the additional chamber are located on both sides of the upper cover of the moving part;

[0018] The upper cover of the moving part is provided with a first vent hole for connecting the first chamber and the additional chamber.

[0019] In one possible implementation of this application, the internal cavity of the mover assembly is provided with a piston body, which is movably connected to the inner wall of the mover frame along the axial direction of the outer shell, and the additional chamber is formed between the piston body and the mover top cover.

[0020] In one possible implementation of this application, an adjustment component is further included. The adjustment component is located in the internal cavity and is connected to the piston body. The adjustment component drives the piston body to move toward or away from the mover cover in order to adjust the volume of the additional chamber.

[0021] In one possible implementation of this application, the adjusting component includes a gear and a rack, the gear and the rack meshing and driving each other, and the rack is connected to the piston body;

[0022] The gear rotates in either the forward or reverse direction to drive the rack to move the piston body closer to or away from the actuator cover along the axial direction of the housing.

[0023] In one possible implementation of this application, along the axial direction of the housing, the end of the mover assembly away from the first chamber is provided with a mounting seat for connection with a wheel;

[0024] Along the axial direction of the outer shell, the lower end face of the bladder does not extend beyond the lower end face of the mounting base.

[0025] In one possible implementation of this application, a first guide sleeve is further included. The first guide sleeve is disposed on the inner wall of the outer shell and sleeved on the outer wall of the moving frame. The first guide sleeve is provided with a second vent hole that allows the first chamber and the second chamber to communicate.

[0026] In one possible implementation of this application, a second guide sleeve is further included, which is disposed on the inner wall of the housing and sleeved on the outer wall of the moving frame;

[0027] Along the axial direction of the outer shell, the second guide sleeve is spaced apart from the first guide sleeve, and an axial channel is formed between the second guide sleeve and the first guide sleeve. The second guide sleeve is provided with a third vent hole.

[0028] The second vent, the third vent, and the axial channel are connected.

[0029] Secondly, embodiments of this application provide a vehicle comprising:

[0030] Body;

[0031] wheel;

[0032] In any of the above embodiments, the stator assembly of the shock absorber is connected to the vehicle body, and the mover assembly of the shock absorber is connected to the wheel. Attached Figure Description

[0033] Figure 1 This is a cross-sectional structural schematic diagram of the shock absorption device provided in the embodiments of this application;

[0034] Figure 2 A cross-sectional structural schematic diagram of the shock absorption device provided in an embodiment of this application in an application environment;

[0035] Figure 3 A cross-sectional structural diagram of the shock absorption device provided in the embodiments of this application in another application environment.

[0036] Figure label:

[0037] 100 - Vibration damping device; 100a - First chamber; 100b - Second chamber; 100c - Additional chamber; 100d - Axial passage;

[0038] 110 - Stator assembly; 111 - Housing; 1111 - Top wall; 112 - Stator coil;

[0039] 120 - Mover assembly; 120a - Internal cavity; 121 - Mover frame; 122 - Magnet; 123 - Mover top cover; 123a - First vent;

[0040] 130-capsule skin;

[0041] 140 - Piston body;

[0042] 150 - Adjusting component; 151 - Gear; 152 - Rack; 153 - Piston rod;

[0043] 160 - Mounting bracket; 161 - Mounting ring;

[0044] 170 - First guide sleeve; 170a - Second vent hole;

[0045] 180 - Second guide sleeve; 180a - Third vent hole;

[0046] 190 - External clamp; 200 - Internal clamp; 210 - External retainer; 220 - Compression buffer; 230 - Tension buffer; 240 - Controller;

[0047] X-axis. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the specific technical solutions of this application will be further described in detail below with reference to the accompanying drawings of the embodiments of this application. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.

[0049] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0050] Furthermore, in the embodiments of this application, directional terms such as "upper," "lower," "left," and "right" are defined relative to the positions in which the components are schematically placed in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the position of the components in the accompanying drawings.

[0051] In the embodiments of this application, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can mean a fixed connection, a detachable connection, or an integral part; it can mean a direct connection or an indirect connection through an intermediate medium.

[0052] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0053] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0054] This application provides a shock absorption device that can be applied to vehicles. It should be noted that the vehicle in this application can refer to large vehicles, small vehicles, special-purpose vehicles, etc. For example, according to vehicle type, the vehicle in this application can be a sedan, an off-road vehicle, a multi-purpose vehicle (MPV), or other types of vehicles. Vehicles generally have wheels, a power source, and a transmission system between the wheels and the power source. The transmission system can transmit the power provided by the power source to the wheels, causing the wheels to rotate and thus driving the vehicle.

[0055] It should be noted that the type of power source of the vehicle is not limited in the embodiments of this application. For example, for fuel vehicles, the power source can refer to fuel engines such as gasoline engines and diesel engines; for electric vehicles, the power source can refer to electric motors; for hybrid vehicles, the power source can refer to engines or electric motors; for vehicles powered by other means, the power source can refer to devices that generate power.

[0056] The shock absorption device described in this application can be applied to a vehicle's suspension system. The suspension system is a crucial component connecting the vehicle body and wheels, used to buffer road impacts and maintain tire contact with the ground. The suspension system isolates and attenuates vibrations caused by road unevenness, improving passenger comfort. Therefore, the suspension performance of a vehicle can affect its handling, comfort, and safety.

[0057] Air springs utilize the compressibility of air to achieve elastic support and vibration isolation. In related technologies, the volume of the air spring's main chamber is fixed, which easily leads to a single stiffness curve for the air spring. Consequently, the stiffness of the air spring can only vary along a fixed curve, making it difficult to meet the driving needs of different environments.

[0058] The shock absorber 100 provided in this application embodiment has an additional chamber 100c, and the volume of the additional chamber 100c is adjustable. Therefore, the volume of the shock absorber 100 can be continuously adjusted, and the shock absorber 100 can obtain a continuously changing stiffness curve, so as to effectively improve the flexibility of the shock absorber 100, thereby meeting different usage needs and improving the user's driving experience.

[0059] Based on this, refer to Figures 1 to 3 This application also provides a shock absorption device 100, including a stator assembly 110, a mover assembly 120, a bladder 130, and an additional chamber 100c.

[0060] The stator assembly 110 includes a housing 111 and a stator coil 112. The stator coil 112 is located on the inner wall of the housing 111. The mover assembly 120 includes a mover frame 121 and a magnet 122, the magnet 122 being disposed on the mover frame 121. The mover assembly 120 is slidably connected to the stator assembly 110 along the axial direction X of the housing 111. At least a portion of the mover assembly 120 is located within the housing 111. The end of the mover assembly 120 forms a first chamber 100a with the housing 111.

[0061] Along the axial direction X of the outer casing 111, a bladder 130 is disposed at the end of the outer casing 111 facing away from the first chamber 100a. The bladder 130 forms a second chamber 100b communicating with the first chamber 100a. An auxiliary chamber 100c communicates with the first chamber 100a. The volume of the auxiliary chamber 100c is adjustable.

[0062] Specifically, the stator assembly 110 includes a stator coil 112, and the mover assembly 120 includes a magnet 122. Therefore, when current flows through the stator coil 112, a magnetic field environment can be generated around the stator coil 112. The magnetic field generated by the stator coil 112 can interact with the magnetic field of the magnet 122 (e.g., a permanent magnet) to generate an electromagnetic force. This electromagnetic force can control the movement of the suspension system, thereby damping vibrations. Therefore, through the interaction between the stator coil 112 and the magnet 122, the damping force can be adjusted in real time via current to improve vehicle comfort and handling.

[0063] In this embodiment, the shock absorber 100 includes an additional chamber 100c. Since the volume of the additional chamber 100c is adjustable, it can be configured arbitrarily according to requirements. Therefore, the shock absorber 100 can achieve stepless adjustment of vehicle body height and stiffness, rather than being limited to multi-level adjustment, thereby increasing the adjustable range of stiffness and damping of the air suspension. Users can match the stiffness of the shock absorber 100 according to different driving environments to achieve different driving experiences.

[0064] It should be noted that, in this embodiment, the stator coil 112 is wound on the inner wall of the housing 111, and the stator coil 112 occupies a large radial space inside the housing 111. The magnet 122 is disposed on the inner wall of the mover frame 121, and the magnet 122 occupies a large radial space inside the housing 111. Since the mover assembly 120 moves along the axial direction X of the housing 111, by setting the first chamber 100a and the second chamber 100b at the two ends of the axial direction X of the housing 111 respectively, the space of the stator assembly 110 and the mover assembly 120 along the axial direction X of the housing 111 can be reasonably utilized, so that the external dimensions of the shock absorption device 100 are not too large.

[0065] Furthermore, the skin 130 is flexible. By providing a second chamber 100b in the skin 130, and having the second chamber 100b communicate with the first chamber 100a, the shape of the skin 130 can change during the movement of the mover assembly 120, thereby achieving dynamic sealing of the second chamber 100b.

[0066] In some examples, a portion of the shell 130 is connected to the housing 111 of the stator assembly 110, and a portion of the shell 130 may be connected to the mover frame 121 of the mover assembly 120. When the mover assembly 120 moves along the axial direction X of the housing 111, the volume of the first chamber 100a changes. Since the first chamber 100a is in communication with the second chamber 100b, the volume of the second chamber 100b may also change. The portion of the shell 130 and the mover frame 121 may move synchronously to allow the volume of the second chamber 100b to change while the second chamber 100b is sealed.

[0067] In some examples, the skin 130 may be connected to the housing 111 of the stator assembly 110 via an outer clamp 190. The outer clamp 190 may be located outside the skin 130 to press the skin 130 against the housing 111 toward the mover frame 121.

[0068] In some examples, the skin 130 may be connected to the mover frame 121 of the mover assembly 120 via an inner clamp 200. The inner clamp 200 may be located inside the skin 130. The inner clamp 200 is connected to the inner wall of the skin 130 to lock the skin 130 to the mover frame 121.

[0069] In some examples, the outer wall of a portion of the bladder 130 may also be provided with an external retainer 210. The external retainer 210 can be used to reduce the possibility of excessive expansion of the bladder 130. Furthermore, since the bladder 130 is flexible, the external retainer 210 can protect the bladder 130 from mechanical damage, which helps to improve the durability of the bladder 130 and thus improve the sealing reliability of the bladder 130.

[0070] In some embodiments of this application, reference is made to Figures 1 to 3 The mover assembly 120 has an internal cavity 120a. An additional cavity 100c is located in the internal cavity 120a.

[0071] In this embodiment, since the size of the permanent magnet 122 in the mover assembly 120 is not necessarily larger, the effect of providing magnetic field strength can be achieved when the size of the mover assembly 120 reaches a preset value. Therefore, the mover assembly 120 can be provided with an internal cavity 120a. The internal cavity 120a can reduce the weight of the mover assembly 120, which is beneficial to reducing the weight of the shock absorption device 100, thereby reducing the weight of the vehicle and thus improving the vehicle's range.

[0072] Furthermore, the internal cavity 120a of the mover assembly 120 can be used to house the additional chamber 100c. Therefore, the additional chamber 100c can easily occupy additional space on the damping device 100, so that the overall size of the damping device 100 will not be too large while achieving stepless stiffness of the damping device 100.

[0073] In some examples, the internal cavity 120a of the mover frame 121 can be a regular cylindrical structure. The regular cylindrical structure facilitates the arrangement of additional chambers 100c with adjustable volume.

[0074] Furthermore, in some embodiments of this application, reference is made to... Figures 1 to 3 The mover assembly 120 includes a mover cover 123. Along the axial direction X of the housing 111, the mover cover 123 is disposed at the end of the mover frame 121 facing the inner wall of the housing 111. An internal cavity 120a is formed between the mover cover 123 and the mover frame 121. The mover cover 123 and the housing 111 form a first chamber 100a.

[0075] The first chamber 100a and the auxiliary chamber 100c are located on both sides of the mover cover 123. The mover cover 123 is provided with a first vent 123a for connecting the first chamber 100a and the auxiliary chamber 100c.

[0076] In this embodiment, when the mover assembly 120 moves along the axial direction X of the housing 111, the mover frame 121 and the mover cover 123 can move synchronously to change the volume of the first chamber 100a. Since the mover cover 123 is provided with a first vent 123a, which allows communication between the first chamber 100a and the auxiliary chamber 100c, it is easy to understand that the volume of the damping device 100 can be equal to the sum of the volumes of the auxiliary chamber 100c and the first chamber 100a. Because the volume of the auxiliary chamber 100c is adjustable, the stiffness range of the damping device 100 can be increased, thus making it suitable for different application environments.

[0077] In some examples, along the axial direction X of the housing 111, the mover cover 123 may be disposed opposite to the top wall 1111 of the housing 111. A first chamber 100a is formed between the mover cover 123 and the top wall 1111 of the housing 111.

[0078] In some examples, the mover cover 123 can be connected to the mover frame 121 via a locking fastener.

[0079] In some examples, at least a portion of the surface of the mover cover 123 facing the top wall 1111 of the housing 111 may be provided with a compression buffer 220. The compression buffer 220 can be used to reduce the likelihood of a rigid collision between the mover cover 123 and the top wall 1111 of the housing 111 when the mover assembly 120 moves toward the top wall 1111 of the housing 111.

[0080] In some examples, a portion of the surface of the top wall 1111 of the mover cover 123 facing away from the housing 111 may be provided with a tension buffer 230.

[0081] Based on this, refer to Figures 1 to 3 In some embodiments of this application, a piston body 140 is provided in the internal cavity 120a of the mover assembly 120. The piston body 140 is movably connected to the inner wall of the mover frame 121 along the axial direction X of the housing 111. An additional chamber 100c is formed between the piston body 140 and the mover cover 123.

[0082] In this embodiment, an additional chamber 100c can be formed between the piston body 140 and the mover cover 123 along the axial direction X of the outer casing 111. By movably connecting the piston body 140 to the inner wall of the mover frame 121, the volume of the additional chamber 100c formed by the piston body 140 and the mover cover 123 can be adjusted.

[0083] Since the additional chamber 100c is located in the internal cavity 120a of the moving frame 121, the volume of the additional chamber 100c has a large adjustable range. Therefore, the stiffness range of the shock absorption device 100 can be large to meet the comfort requirements of different environments.

[0084] In some examples, the piston body 140 is sealed to the inner wall of the mover frame 121 so that the space of the piston body 140 away from the mover cover 123 is not connected to the additional chamber 100c. This reduces the possibility that the space on both sides of the piston body 140 along the axial direction X of the outer casing 111 may fail, affecting the stepless adjustment of the stiffness of the damping device 100.

[0085] For example, the piston body 140 and the inner wall of the mover frame 121 may be sealed together by a seal, but not limited to a seal.

[0086] Furthermore, in some embodiments of this application, reference is made to... Figure 1The shock absorber 100 may further include an adjustment assembly 150. The adjustment assembly 150 is located in the internal cavity 120a. The adjustment assembly 150 is connected to the piston body 140. The adjustment assembly 150 drives the piston body 140 to move toward or away from the mover cover 123 to adjust the volume of the auxiliary chamber 100c.

[0087] In this embodiment, the adjustment component 150 can provide driving force to the piston body 140. The adjustment component 150 can be used to drive the piston body 140 to move along the axial direction X of the housing 111 to increase or decrease the volume of the auxiliary chamber 100c, thereby realizing the volume adjustment of the auxiliary chamber 100c.

[0088] Specifically, when the adjusting assembly 150 drives the piston body 140 to move closer to the mover cover 123, the volume of the auxiliary chamber 100c can be reduced. When the adjusting assembly 150 drives the piston body 140 to move away from the mover cover 123, the volume of the auxiliary chamber 100c can be increased.

[0089] Furthermore, since the adjustment component 150 is located in the internal cavity 120a of the mover frame 121, the adjustment component 150 can make reasonable use of the internal cavity 120a of the mover frame 121. In other words, the adjustment component 150 can avoid occupying other external space of the shock absorber 100, which helps to reduce the possibility that the adjustment component 150 occupies a large space, resulting in an increase in the size of the shock absorber 100.

[0090] It should be noted that the specific form of the adjusting component 150 is not limited in this embodiment. Exemplarily, in some embodiments of this application, the adjusting component 150 may include a lead screw and a slider. The slider may be connected to the piston body 140. By rotating the lead screw in either the forward or reverse direction, the slider can cause the piston body 140 to move closer to or away from the mover cover 123, thereby reducing or increasing the volume of the additional chamber 100c.

[0091] Alternatively, in some embodiments of this application, refer to Figures 1 to 3 The adjusting assembly 150 may include a gear 151 and a rack 152. The gear 151 and the rack 152 mesh and drive each other, and the rack 152 is connected to the piston body 140.

[0092] The gear 151 rotates in the forward or reverse direction so that the rack 152 drives the piston body 140 to move closer to or away from the mover cover 123 along the axial direction X of the housing 111.

[0093] In this embodiment of the application, through the meshing of gear 151 and rack 152, gear 151 can be used to drive rack 152 to move along the axial direction X of housing 111, so that rack 152 can drive piston body 140 to move along the axial direction X of housing 111.

[0094] It should be noted that when gear 151 rotates in the forward and reverse directions, rack 152 can move in different directions along the axial direction X of housing 111. Specifically, when gear 151 rotates in the forward direction, rack 152 can move closer to the mover cover 123, or when gear 151 rotates in the reverse direction, rack 152 can move away from the mover cover 123. This is not limited in this embodiment.

[0095] For example, refer to Figure 2 The position of gear 151 can remain fixed. When gear 151 rotates clockwise, the meshing of gear 151 with rack 152 causes rack 152 to move downwards. Since rack 152 is connected to piston body 140, rack 152 can drive piston body 140 to move downwards synchronously, increasing the distance between piston body 140 and mover cover 123, thereby increasing the volume of auxiliary chamber 100c. Correspondingly, refer to... Figure 3 When gear 151 rotates in the opposite direction (counterclockwise), the meshing of gear 151 and rack 152 causes rack 152 to move upward. Since rack 152 is connected to piston body 140, rack 152 can drive piston body 140 to move upward synchronously, reducing the distance between piston body 140 and mover cover 123, thereby reducing the volume of auxiliary chamber 100c.

[0096] In some examples, the regulating component 150 may include a power source. The power source can be used to drive the gear 151 to rotate. The power source may be, but is not limited to, an electric motor.

[0097] In some examples, the damping device 100 may also include a controller 240. The controller 240 may be connected to a power source to control the operation of the gear 151, thereby adjusting the volume of the auxiliary chamber 100c.

[0098] In some examples, controller 240 can be connected to the vehicle's control system. Occupants inside the vehicle can use the control system to allow controller 240 to adjust the volume of the auxiliary chamber 100c.

[0099] In some examples, rack 152 and piston body 140 can be connected via piston rod 153. Along the axial direction X of housing 111, one end of piston rod 153 is connected to piston body 140, and the other end of piston rod 153 is connected to rack 152.

[0100] The piston rod 153 and the piston body 140 may be connected, but are not limited to, by fasteners. The piston rod 153 and the rack 152 may be connected, but are not limited to, by fasteners, or the piston rod 153 and the rack 152 may be an integral structure. No limitation is made in this embodiment.

[0101] Furthermore, in some embodiments of this application, reference is made to... Figures 1 to 3 Along the axial direction X of the housing 111, the end of the mover assembly 120 away from the first chamber 100a is provided with a mounting seat 160. The mounting seat 160 is used for connection with a wheel. Along the axial direction X of the housing 111, the lower end face of the bladder 130 does not extend beyond the lower end face of the mounting seat 160.

[0102] In this embodiment, the mover assembly 120 moves along the axial direction X of the housing 111. Therefore, during its movement, the mover assembly 120 occupies space in the shock absorber 100 along the axial direction X of the housing 111. The mounting base 160 is located at the end of the mover frame 121 away from the first chamber 100a, and the mounting base 160 is located in the space of the shock absorber 100 along the axial direction X of the housing 111. Since part of the bladder 130 can be connected to the mover frame 121, and part of the bladder 130 can move synchronously with the mover frame 121, by setting the lower end face of the bladder 130 not to exceed the lower end face of the mounting base 160 along the axial direction X of the housing 111, the bladder 130 is less likely to occupy space in the shock absorber assembly along the axial direction X of the housing 111, which helps to reduce the possibility that the bladder 130 will cause an increase in the size of the shock absorber assembly along the axial direction X of the housing 111.

[0103] In some examples, a portion of the skin 130 may be located on the periphery of the mover assembly 120.

[0104] In some examples, a mounting ring 161 may be provided at one end of the mounting base 160 away from the mover frame 121 along the axial direction X of the housing 111. The mounting ring 161 can be used to connect the mounting base 160 and the wheel.

[0105] In some examples, the mounting base 160 and the moving frame 121 may be connected, but are not limited to, via fasteners.

[0106] In some embodiments of this application, reference is made to Figure 1 The shock absorption device 100 may further include a first guide sleeve 170. The first guide sleeve 170 is disposed on the inner wall of the outer shell 111 and sleeved on the outer wall of the mover frame 121. The first guide sleeve 170 is provided with a second vent hole 170a that allows communication between the first chamber 100a and the second chamber 100b.

[0107] In this embodiment of the application, the first guide sleeve 170 can be used to provide guidance for the movement of the mover assembly 120 so that the mover assembly 120 can maintain axial X movement along the housing 111.

[0108] In some examples, along the axial direction X of the housing 111, the first guide sleeve 170 can be located between the first chamber 100a and the second chamber 100b. By providing a second vent hole 170a on the first guide sleeve 170, the first chamber 100a and the second chamber 100b can be connected, so that when the volume of the first chamber 100a decreases, the volume of the second chamber 100b can increase.

[0109] In some examples, the inner wall of the first guide sleeve 170 may be provided with a seal. The seal allows the inner wall of the first guide sleeve 170 to be sealed to the outer wall of the mover frame 121.

[0110] In some examples, the seal is elastic. During the movement of the mover assembly 120, the seal can be used to reduce the frictional resistance between the mover frame 121 and the first guide sleeve 170.

[0111] In some embodiments of this application, reference is made to Figure 1 The shock absorption device 100 may also include a second guide sleeve 180. The second guide sleeve 180 is disposed on the inner wall of the housing 111 and sleeved on the outer wall of the mover frame 121.

[0112] Along the axial direction X of the outer casing 111, the second guide sleeve 180 and the first guide sleeve 170 are spaced apart. An axial channel 100d is formed between the second guide sleeve 180 and the first guide sleeve 170. The second guide sleeve 180 is provided with a third vent hole 180a. The second vent hole 170a, the third vent hole 180a and the axial channel 100d are connected.

[0113] In this embodiment of the application, the second guide sleeve 180 can be used to provide guidance for the movement of the mover assembly 120 so that the mover assembly 120 can maintain axial X movement along the housing 111.

[0114] The first chamber 100a and the second chamber 100b are connected via a second vent 170a, a third vent 180a, and an axial channel 100d. Gas in the first chamber 100a can sequentially enter the second chamber 100b through the second vent 170a, the axial channel 100d, and the third vent 180a. Correspondingly, gas in the second chamber 100b can sequentially enter the first chamber 100a through the third vent 180a, the axial channel 100d, and the second vent 170a.

[0115] In some examples, the inner wall of the second guide sleeve 180 may be provided with a seal. The seal allows the inner wall of the second guide sleeve 180 to be sealed to the outer wall of the mover frame 121.

[0116] In some examples, the seal is elastic. During the movement of the mover assembly 120, the seal can be used to reduce the frictional resistance between the mover skeleton 121 and the second guide sleeve 180.

[0117] This application embodiment can also provide a vehicle. The vehicle may include a body, wheels, and the shock absorption device 100 in any of the above embodiments.

[0118] The stator assembly 110 of the shock absorber 100 can be connected to the vehicle body. The mover assembly 120 of the shock absorber 100 can be connected to the wheel.

[0119] In this embodiment, the adjustable auxiliary chamber 100c of the shock absorber 100 allows for continuous volume adjustment, resulting in a continuously varying stiffness curve that meets the needs of different environments and improves user experience. Furthermore, the first chamber 100a, second chamber 100b, and auxiliary chamber 100c of the shock absorber 100 effectively utilize the space along the axial direction X of the outer casing 111, preventing the shock absorber 100 from becoming excessively large.

[0120] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made based on the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A shock absorbing device (100) characterized by, The application relates to a motor assembly, comprising: a stator assembly (110) comprising a housing (111) and a stator coil (112) located on an inner wall of the housing (111); a rotor assembly (120) comprising a rotor skeleton (121) and a magnet (122) arranged on the rotor skeleton (121) and slidably connected to the stator assembly (110) along an axial direction (X) of the housing (111), at least part of the rotor assembly (120) being located in the housing (111), and an end of the rotor assembly (120) forming a first chamber (100a) with the housing (111); a capsule (130) arranged on an end of the housing (111) away from the first chamber (100a) along the axial direction (X) of the housing (111), the capsule (130) forming a second chamber (100b) in communication with the first chamber (100a); an additional chamber (100c) in communication with the first chamber (100a), the volume of the additional chamber (100c) being adjustable.

2. The shock absorbing device (100) according to claim 1, characterized in that The rotor assembly (120) is provided with an internal cavity (120a), and the additional chamber (100c) is located in the internal cavity (120a).

3. The shock-absorbing device (100) according to claim 2, characterized in that The rotor assembly (120) comprises a rotor upper cover (123) arranged on an end of the rotor skeleton (121) facing the inner wall of the housing (111) along the axial direction (X) of the housing (111), the rotor upper cover (123) and the rotor skeleton (121) forming the internal cavity (120a), and the rotor upper cover (123) and the housing (111) forming the first chamber (100a). The first chamber (100a) and the additional chamber (100c) are located on two sides of the rotor upper cover (123) respectively. The rotor upper cover (123) is provided with a first air hole (123a) for communicating the first chamber (100a) and the additional chamber (100c).

4. The shock-absorbing device (100) according to claim 3, characterized in that The internal cavity (120a) of the rotor assembly (120) is provided with a piston body (140) movably connected to an inner wall of the rotor skeleton (121) along the axial direction (X) of the housing (111), the piston body (140) and the rotor upper cover (123) forming the additional chamber (100c).

5. The shock absorbing device (100) according to claim 4, characterized in that The application further comprises an adjusting assembly (150) located in the internal cavity (120a), the adjusting assembly (150) being connected to the piston body (140) and driving the piston body (140) to move towards or away from the rotor upper cover (123) for adjusting the volume of the additional chamber (100c).

6. The shock-absorbing device (100) according to claim 5, characterized in that The adjusting assembly (150) comprises a gear (151) and a rack (152), the gear (151) and the rack (152) are in meshing transmission, and the rack (152) is connected with the piston body (140); Wherein, the gear (151) rotates forward or reversely, so that the rack (152) drives the piston body (140) to approach or move away from the mover upper cover (123) along the axial direction (X) of the shell (111).

7. The shock-absorbing device (100) according to any one of claims 1 to 6, characterized in that Along the axial direction (X) of the shell (111), the end portion of the mover assembly (120) away from the first chamber (100a) is provided with a mounting seat (160), and the mounting seat (160) is used for connecting with a wheel; Along the axial direction (X) of the shell (111), the lower end surface of the bladder skin (130) does not exceed the lower end surface of the mounting seat (160).

8. The shock absorbing device (100) according to claim 3, characterized in that Further comprising a first guide sleeve (170), the first guide sleeve (170) is arranged on the inner wall of the shell (111), and the first guide sleeve (170) is sleeved on the outer wall of the mover framework (121), and the first guide sleeve (170) is provided with a second vent hole (170a) for communication between the first chamber (100a) and the second chamber (100b).

9. The shock-absorbing device (100) according to claim 8, characterized in that Further comprising a second guide sleeve (180), the second guide sleeve (180) is arranged on the inner wall of the shell (111), and the second guide sleeve (180) is sleeved on the outer wall of the mover framework (121); Along the axial direction (X) of the shell (111), the second guide sleeve (180) is arranged in a spaced manner with the first guide sleeve (170), an axial channel (100d) is formed between the second guide sleeve (180) and the first guide sleeve (170), and the second guide sleeve (180) is provided with a third vent hole (180a); Wherein, the second vent hole (170a), the third vent hole (180a) and the axial channel (100d) are communicated.

10. A vehicle characterized by comprising: Comprise: A vehicle body; A wheel; The damping device (100) of any one of claims 1 to 9, the stator assembly (110) of the damping device (100) is connected with the vehicle body, and the mover assembly (120) of the damping device (100) is connected with the wheel.

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