Shock absorber and vehicle

Abstract

A shock absorber (100) comprises a stator assembly (1) and a rotor assembly (2), wherein the stator assembly (1) is adapted to be connected to a vehicle body, a cooling flow path (14) is provided in the stator assembly (1), and the cooling flow path (14) is provided with an inlet (14a) and an outlet (14b), the inlet (14a) and the outlet (14b) being adapted to be connected to an external circulation loop; and the rotor assembly (2) is adapted to be connected to a suspension, the rotor assembly (2) cooperates with the stator assembly (1), and the rotor assembly (2) is movable relative to the stator assembly (1).

Description

Shock absorbers and vehicles

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number 2023118686170 and application date December 29, 2023, and claims the priority of the above-mentioned Chinese patent application. The entire content of the above-mentioned Chinese patent application is hereby introduced into this application as a reference. Technical Field

[0003] The present application relates to the field of vehicles, and in particular to a shock absorber and a vehicle having the shock absorber. Background Art

[0004] In related technologies, electromagnetic vibration absorbers usually use natural air cooling, but the coil windings of the electromagnetic vibration absorber will generate a lot of heat during operation. Natural air cooling cannot meet the heat dissipation requirements, resulting in a higher operating temperature of the vibration absorber, which may cause damage to the coil windings. There is room for improvement.

[0005] Application Contents

[0006] The present application aims to solve one of the technical problems in the related art at least to a certain extent.

[0007] To this end, one purpose of the present application is to propose a vibration damper that can liquid-cool the stator assembly to improve the overall heat dissipation efficiency and help prevent the coil winding from overheating and burning.

[0008] According to an embodiment of the present application, the shock absorber includes: a stator assembly, which is suitable for being connected to a vehicle body, a cooling flow path is provided in the stator assembly, and the cooling flow path is suitable for being connected to an external circulation loop; a mover assembly, which is suitable for being connected to a suspension, the mover assembly cooperates with the stator assembly, and the mover assembly is movable relative to the stator assembly.

[0009] According to the shock absorber of the embodiment of the present application, a cooling flow path is provided on the stator assembly, so that the coolant can liquid-cool the stator assembly, thereby improving the heat dissipation efficiency of the stator assembly, and then improving the overall heat dissipation efficiency of the shock absorber, which can prevent the coil winding from overheating and burning, and improve the reliability of the shock absorber.

[0010] According to the shock absorber of some embodiments of the present application, the stator assembly is provided with a first guide portion, the mover assembly is provided with a second guide portion, the first guide portion and the second guide portion cooperate to guide the moving direction of the mover assembly, and the cooling flow path is provided in the first guide portion.

[0011] According to the shock absorber of some embodiments of the present application, the first guide portion is a guide column provided with a guide groove, and the second guide portion is inserted into the guide groove.

[0012] According to the shock absorber of some embodiments of the present application, the cooling flow path is provided with an inlet and an outlet, and the cooling flow path includes an inlet flow channel connected to the inlet and an outlet flow channel connected to the outlet, the inlet flow channel and the outlet flow channel are respectively connected to the conducting flow channel through a connecting flow channel, at least one end of the conducting flow channel and at least one end of the connecting flow channel are provided with an opening located on the outer peripheral wall of the first guide portion, and each of the openings is blocked by a blocking member.

[0013] According to the shock absorber of some embodiments of the present application, both ends of the conducting flow channel and one end of each of the connecting flow channels are provided with the openings.

[0014] According to the shock absorber of some embodiments of the present application, the blocking member is a metal ball located inside the first guide portion.

[0015] According to the vibration absorber of some embodiments of the present application, the metal ball is interference fit with the opening.

[0016] According to some embodiments of the present application, the shock absorber further includes a detection component for detecting the moving direction and displacement of the movable component, and the detection component is suitable for being electrically connected to the control module.

[0017] According to the shock absorber of some embodiments of the present application, the detection component includes a position sensor and a sensor grating, the sensor grating is arranged on the outer peripheral wall of the first guide part, and the position sensor is arranged on the mover assembly.

[0018] According to some embodiments of the shock absorber of the present application, the stator assembly includes a stator mounting portion and a coil winding, the coil winding is press-fitted on the stator mounting portion, the cooling flow path is located in the stator mounting portion, and the mover assembly includes a cylinder and a permanent magnet provided on the cylinder.

[0019] According to some embodiments of the present application, the shock absorber further includes a limit assembly for limiting the stroke of the mover assembly, and the limit assembly is provided on the stator mounting portion.

[0020] According to the shock absorber of some embodiments of the present application, the limiting assembly includes a first stop member provided above the mover assembly.

[0021] According to the shock absorber of some embodiments of the present application, the movable subassembly defines a moving channel, the stator assembly is located in the moving channel, the upper end of the cylinder is provided with a stop portion extending toward the interior of the moving channel, and the limiting assembly also includes a second stop member located below the stop portion, and the stop portion is suitable for contacting the second stop member to limit the movable subassembly.

[0022] According to the shock absorber of some embodiments of the present application, the second stop member is provided with a flexible buffer pad, and the buffer pad is in sliding contact with the moving channel.

[0023] According to some embodiments of the present application, the shock absorber further includes a shock absorbing spring, with both ends of the shock absorbing spring respectively mounted to the vehicle body and the suspension.

[0024] According to the shock absorber of some embodiments of the present application, the lower end of the shock absorber spring is mounted to the mover assembly.

[0025] The present application also proposes a vehicle.

[0026] A vehicle according to an embodiment of the present application includes: a vehicle frame, a vehicle body suspension, and a shock absorber according to any one of the above embodiments.

[0027] According to the vehicle of the embodiment of the present application, a cooling flow path is provided on the stator assembly, so that the coolant can liquid-cool the stator assembly, thereby improving the heat dissipation efficiency of the stator assembly, and then improving the overall heat dissipation efficiency of the shock absorber, which can prevent the coil winding from overheating and burning, improve the reliability of the shock absorber, and improve the overall performance of the vehicle.

[0028] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] FIG1 is a schematic diagram of a shock absorber according to an embodiment of the present application;

[0030] FIG2 is a cross-sectional view of a shock absorber according to an embodiment of the present application;

[0031] FIG3 is a schematic structural diagram of a cooling flow path according to an embodiment of the present application;

[0032] FIG4 is a cross-sectional view of the shock absorber according to an embodiment of the present application from another perspective;

[0033] FIG5 is a partial enlarged view of point A in FIG4 .

[0034] Figure numerals: shock absorber 100, stator assembly 1, stator mounting part 11, guide column 12, guide groove 121, linear bearing 122, tower top 13, cooling flow path 14, inlet 14a, outlet 14b, inlet flow channel 141, outlet flow channel 142, connecting flow channel 143, conducting flow channel 144, metal ball 15, coil winding 16, lead-out harness 161, buffer block 17, dust cover 18, mover assembly 2, second guide part 21, cylinder 22, bottom plate 221, side plate 222, stopper 223, moving channel 224, permanent magnet 23, insulating partition 24, detection assembly 3, position sensor 31, sensor grating 32, limit assembly 4, first stop member 41, second stop member 42, buffer pad 43, vibration damping spring 5, spring upper base 6, spring lower base 7, mounting fork 8. DETAILED DESCRIPTION

[0035] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0036] Hereinafter, a vibration damper 100 according to an embodiment of the present application will be described with reference to the accompanying drawings.

[0037] As shown in Figures 1 to 5, the shock absorber 100 of the embodiment of the present application includes: a stator assembly 1 and a mover assembly 2. The stator assembly 1 is suitable for being connected to the vehicle body. A cooling flow path 14 is provided in the stator assembly 1. The cooling flow path 14 is provided with an inlet 14a and an outlet 14b. The inlet 14a and the outlet 14b are suitable for being connected to an external circulation loop. The mover assembly 2 is suitable for being connected to the suspension. The mover assembly 2 cooperates with the stator assembly 1 and is movable relative to the stator assembly 1.

[0038] As a result, the coolant can cool the stator assembly 1, thereby improving the heat dissipation efficiency of the stator assembly 1, thereby improving the overall heat dissipation efficiency of the shock absorber 100, avoiding overheating and burning of the coil winding 16, and improving the reliability of the shock absorber 100.

[0039] For example, referring to Figures 1 and 2, the shock absorber 100 is used to connect between the vehicle body and the suspension. When the suspension vibrates, the vibration can be transmitted to the vehicle body through the shock absorber 100. The shock absorber 100 is provided with a stator assembly 1 and a mover assembly 2. The stator assembly 1 is connected to the vehicle body, and the mover assembly 2 is connected to the suspension. The mover assembly 2 can reciprocate along the first direction (i.e., the up and down direction shown in Figure 1) with the suspension. The stator assembly 1 and the mover assembly 2 cooperate. One of the stator assembly 1 and the mover assembly 2 is installed with a permanent magnet 23, and the other is installed with a coil winding 16. When the coil winding 16 is energized, the stator assembly 1 can apply an electromagnetic force to the mover assembly 2. The direction of the electromagnetic force is opposite to the direction of movement of the mover assembly 2, so that the shock absorber 100 can reduce the vibration of the vehicle body.

[0040] In the actual arrangement, a mounting fork 8 can be connected to the mover assembly 2, and a connecting ring is provided on the mounting fork 8 for suspension connection, so that the shock absorber 100 can directly use the mounting hole position of the traditional hydraulic shock absorber, with little change to the vehicle chassis, or even no need to modify the vehicle chassis.

[0041] It should be noted that during the movement of the movable component 2 relative to the stator component 1, friction heat will be generated between the movable component 2 and the stator component 1, and the coil winding 16 will generate a large amount of heat during the power-on process. Natural wind heat cannot meet the heat dissipation requirements, resulting in a higher operating temperature of the shock absorber 100, which in turn affects the service life of the shock absorber 100.

[0042] To address the above-mentioned problem, a cooling flow path 14 can be provided in the stator assembly 1. The cooling flow path 14 is provided with an inlet 14a and an outlet 14b. The vehicle body is provided with an external circulation loop. The inlet 14a and the outlet 14b are provided at the end of the stator assembly 1 facing the vehicle body. The inlet 14a and the outlet 14b can be connected to the external circulation loop through connecting pipes, respectively. The coolant (such as water or oil) in the external circulation loop can flow from the inlet 14a into the cooling flow path 14. The coolant absorbs heat in the cooling flow path 14. The coolant after absorbing heat can flow into the external circulation loop through the outlet 14b to achieve circulation. In this way, liquid cooling of the stator assembly 1 can be achieved, thereby efficiently cooling the entire shock absorber 100. As a result, the operating temperature of the shock absorber 100 is reduced and the service life of the shock absorber 100 is increased.

[0043] It should be noted that by arranging the cooling circuit in the stator assembly 1 , the length of the connecting pipe can be kept unchanged, the connection between the cooling circuit and the external circulation circuit is easy and stable, and the overall performance of the shock absorber 100 is good.

[0044] According to the shock absorber 100 of the embodiment of the present application, a cooling flow path 14 is provided on the stator assembly 1, so that the coolant can liquid-cool the stator assembly 1, thereby improving the heat dissipation efficiency of the stator assembly 1, thereby improving the overall heat dissipation efficiency of the shock absorber 100, avoiding overheating and burning of the coil winding 16, improving the reliability of the shock absorber 100, and improving the overall performance of the vehicle.

[0045] In some embodiments of the present application, the stator assembly 1 is provided with a first guide portion, and the mover assembly 2 is provided with a second guide portion 21. The first guide portion and the second guide portion 21 cooperate to guide the moving direction of the mover assembly 2, and the cooling flow path 14 is provided in the first guide portion.

[0046] For example, as shown in Figure 2, the stator assembly 1 is provided with a first guide portion, and the mover assembly 2 is provided with a second guide portion 21. The first guide portion and the second guide portion 21 are matched, so that the first guide portion can cooperate with the second guide portion 21 to guide the movement direction of the mover assembly 2, thereby enabling the mover assembly 2 to move in a first direction relative to the stator assembly 1. Simultaneously, a cooling flow path 14 can be provided on the first guide portion, so that the coolant within the cooling flow path 14 can be used to dissipate heat from the electromagnetic induction structure (i.e., the coil winding 16) of the stator assembly 1. This improves the cooling effect of the coolant on the shock absorber 100, thereby enhancing the reliability of the shock absorber 100.

[0047] In some embodiments of the present application, the first guide portion is a guide column 12 provided with a guide groove 121, and the second guide portion 21 is inserted into the guide groove 121. For example, as shown in Figure 2, the first guide portion can be constructed as a guide column 12, the guide column 12 is provided with a guide groove 121 extending in the axial direction, the second guide portion 21 is constructed in a columnar shape and is matched with the guide groove 121, and the second guide portion 21 can be inserted into the guide groove 121 to achieve the guiding cooperation between the first guide portion and the second guide portion 21. Of course, the second guide portion 21 can also be constructed as a guide column 12 provided with a guide groove 121, and the first guide portion is inserted into the guide groove 121, and this application does not impose any restrictions on this. Through the above-mentioned arrangement, the cooperation stability between the first guide portion and the second guide portion 21 is improved, which is conducive to improving the reliability of the shock absorber 100.

[0048] Furthermore, as shown in Figure 2, the guide groove 121 can be set at the axis of the guide column 12, and a linear bearing 122 can be installed at the notch of the guide groove 121. The linear bearing 122 is used to cooperate with the second guide part 21. The linear bearing 122 can not only play a centering role when the stator assembly 1 and the mover assembly 2 are assembled, but also play a guiding role when the mover assembly 2 moves up and down. It can also reduce the friction and resistance of the second guide part 21 during movement, thereby improving the movement accuracy and guiding sensitivity.

[0049] In some embodiments of the present application, the cooling flow path 14 is provided with an inlet 14a and an outlet 14b, and the cooling flow path 14 includes an inlet flow channel 141 connected to the inlet 14a and an outlet flow channel 142 connected to the outlet 14b, and the inlet flow channel 141 and the outlet flow channel 142 are respectively connected to the conducting flow channel 144 through the connecting flow channel 143, and at least one end of the conducting flow channel 144 and at least one end of the connecting flow channel 143 are provided with an opening located on the outer peripheral wall of the first guide portion, and each opening is blocked by a blocking member.

[0050] For example, as shown in Figures 2 and 3, the cooling channel 14 is provided with an inlet channel 141 and an outlet channel 142. The inlet channel 141 and the outlet channel 142 extend along the length of the first guide portion and are located on either side of the first guide portion. One end of the inlet channel 141 is connected to the inlet 14a and the other end is connected to the connecting channel 143. One end of the outlet channel 142 is connected to the outlet 14b and the other end is connected to another connecting channel 143. The two connecting channels 143 can be connected through a conducting channel 144, so that the inlet channel 141 and the outlet channel 142 can be connected through the conducting channel 144. In this way, the coolant can flow from the inlet 14a into the inlet channel 141, and then flow through the inlet channel 141, the connecting channel 143, the conducting channel 144, the other connecting channel 143, and the outlet channel 142 in sequence, and then out of the outlet 14b, thereby fully cooling the stator assembly 1.

[0051] As shown in Figure 3, a conducting channel 144 can be processed on the outer peripheral wall of the guide column 12, and the conducting channel 144 is open at least at one end along the length direction to form an opening, and then two connecting channels 143 are processed from the outer peripheral wall of the guide column 12, one connecting channel 143 is used to connect the inlet channel 141 with one end of the conducting channel 144, and the other connecting channel 143 is used to connect the outlet channel 142 with the other end of the conducting channel 144, and the connecting channel 143 is open at least at one end along the length direction to form an opening, and each opening is blocked by a blocking member.

[0052] It can be understood that when both ends of the conducting channel 144 and both ends of the connecting channel 143 are formed as openings, the difficulty of positioning the conducting channel 144 and the connecting channel 143 can be reduced, which is conducive to reducing the difficulty of processing the guide column 12, and when the conducting channel 144 and / or the connecting channel 143 has only a single opening, the number of openings of the cooling channel 14 can be reduced, thereby improving the sealing of the cooling channel 14.

[0053] Furthermore, as shown in FIG3 , both ends of the conducting flow channel 144 and one end of each connecting flow channel 143 may be provided with openings. In the actual processing process, as shown in FIG3 , the conducting flow channel 144 may be first machined from the outer peripheral wall of the guide column 12 , with both ends of the conducting flow channel 144 open to form openings. Then, two connecting flow channels 143 may be machined from the outer peripheral wall of the guide column 12 , with the two connecting flow channels 143 respectively communicating with the inlet flow channel 141 and the outlet flow channel 142 . One end of the connecting flow channel 143 along the length direction is open to form an opening, and the other end is connected to the conducting flow channel 144 .

[0054] Through the above arrangement, the positioning difficulty of the conducting channel 144 can be reduced, the processing difficulty is reduced, and the number of openings of the cooling flow path 14 can be reduced, which is conducive to improving the sealing performance of the cooling flow path 14.

[0055] In some embodiments of the present application, the blocking member is a metal ball 15 located inside the first guide portion. For example, as shown in FIG3 , the diameter of the conducting channel 144 is constructed to be equal to the diameter of the connecting channel 143, and the blocking member can be constructed as a metal ball 15, and the diameter of the metal ball 15 is close to the diameter of the connecting channel 143, so that the metal ball 15 can be loaded into the opening and used to block the opening. For example, the diameter of the metal ball 15 can be set to be equal to the diameter of the connecting channel 143, and the metal ball 15 can be loaded into the opening and glued to the inner wall of the opening. Specifically, the material of the metal ball 15 is stainless steel or other materials to avoid the metal ball 15 from reacting with the coolant. Through the above-mentioned arrangement, the overall sealing of the cooling channel 14 is improved, and the reliability of the shock absorber 100 is improved.

[0056] It should be noted that the blocking member may also be constructed in a plug-shaped, elliptical or other structure, and the blocking member may also be made of non-metallic materials such as rubber, and this application does not impose any restrictions on this.

[0057] Furthermore, the diameter of the metal ball 15 can be set slightly larger than the diameter of the connecting flow channel 143, and the metal ball 15 can be snapped into the opening to form an interference fit with the inner peripheral wall of the opening, thereby achieving a stable seal of the cooling flow channel 14. In this way, the reliability of the shock absorber 100 is improved.

[0058] In some embodiments of the present application, as shown in FIG2 , the shock absorber 100 of the embodiment of the present application further includes a detection component 3 for detecting the moving direction and displacement of the movable component 2 , and the detection component 3 is suitable for being electrically connected to the control module.

[0059] For example, as shown in Figures 4 and 5 , the shock absorber 100 is further provided with a detection component 3 for detecting the movement direction and position of the movable component 2. The detection component 3 is electrically connected to the control module, so that the detection component 3 can transmit the detected data to the control module. The control module can determine the movement direction and position of the suspension based on the obtained data, and the control module can issue corresponding control instructions to control the shock absorber 100 to perform the corresponding action, thereby achieving vibration reduction. This improves the reliability of the shock absorber 100.

[0060] During operation, when the mover assembly 2 moves upward, the control module issues a control command to the stator assembly 1, causing the stator assembly 1 to apply a downward electromagnetic force to the mover assembly 2, thereby providing damping to the suspension and reducing vehicle body vibration. Alternatively, when the movement position of the mover assembly 2 exceeds a predetermined range, the control module may determine that the shock absorber 100 is damaged. In this case, the control module may control the in-vehicle display or audio system to play a warning to alert the driver. The above embodiments are exemplary and not intended to limit the present application.

[0061] Furthermore, as shown in FIG5 , the detection assembly 3 can include a position sensor 31 and a sensor grating 32. The sensor grating 32 is disposed on the outer peripheral wall of the first guide portion and is configured to extend along the direction of motion of the movable assembly 2. The position sensor 31 is disposed on the movable assembly 2, and the position sensor 31 and the sensor grating 32 are arranged opposite each other. When the movable assembly 2 moves relative to the stator assembly 1, the position sensor 31 can move along the sensor grating 32 to continuously scan the sensor grating 32, thereby determining the movement direction and displacement of the movable assembly 2. This improves the detection accuracy of the detection assembly 3 and enhances the reliability of the shock absorber 100.

[0062] Of course, the sensor grating 32 may also be disposed on the side wall of the second guide portion 21 , and the position sensor 31 may be disposed on the stator assembly 1 , and this application does not impose any limitation thereto.

[0063] Furthermore, a grating groove can be opened on the outer peripheral wall of the first guide portion, and the depth of the grating groove is not less than the thickness of the sensor grating 32. The sensor grating 32 is installed in the grating groove, which can improve the installation accuracy of the sensor grating 32 and reduce the interference of other components on the sensor grating 32, which is conducive to improving the reliability of the sensor grating 32.

[0064] In some embodiments of the present application, the stator assembly 1 includes a stator mounting portion 11 and a coil winding 16, the coil winding 16 is pressed into the stator mounting portion 11, the cooling flow path 14 is located in the stator mounting portion 11, and the mover assembly 2 includes a cylinder 22 and a permanent magnet 23 provided on the cylinder 22.

[0065] For example, referring to Figures 1 and 2, the stator assembly 1 includes a stator mounting portion 11 and a coil winding 16. The stator mounting portion 11 includes a first guide portion and a tower top 13. The tower top 13 is used to connect to the vehicle body to connect the stator assembly 1 to the vehicle body. The first guide portion is cylindrical, and the tower top 13 is annular. The upper end of the first guide portion is inserted into and connected to the tower top 13, and the lower end of the first guide portion extends downward to below the tower top 13. A cooling flow path 14 is provided in the first guide portion, and the cooling flow path 14 is connected to an external circulation circuit through an outlet pipe passing through the tower top 13. The coil winding 16 is composed of multiple turns of coils wound around a silicon steel sheet stack. The coil winding 16 is press-fitted and fixed to the outside of the first guide portion, and the lead-out wire harness 161 of the coil winding 16 is led out to the top of the tower top 13 through the slot structure on the first guide portion.

[0066] In the actual arrangement, the tower top bolts and the tower top 13 can be pressed into one piece, and then connected to the tower top seat of the vehicle body through the tower top bolts to fix the tower top 13 on the vehicle body; the tower top 13 is constructed in a ring shape, and a bushing is installed in the tower top 13, and the first guide part is passed through the bushing to be connected to the tower top 13; a dust cover 18 is provided on the top of the tower top 13, and the dust cover 18 is used to prevent external dust and other impurities from entering the first guide part.

[0067] The mover assembly 2 includes a cylinder 22 and permanent magnets 23. The coil windings 16 of the stator assembly 1 are located within the cylinder 22. A plurality of permanent magnets 23 are mounted on the inner circumferential wall of the cylinder 22. These permanent magnets 23 are spaced apart and arranged axially of the cylinder 22 and opposite the coil windings 16. An insulating partition 24 is provided on the inner side of the permanent magnets 23. The insulating partition 24 is welded to the cylinder 22 and is used to insulate the permanent magnets 23 from the coil windings 16.

[0068] It should be noted that a uniform air gap is formed between the inner wall of the insulating partition 24 and the coil winding 16. When the coil winding 16 is energized, a magnetic field is generated. The intensity of the magnetic field can be controlled by the magnitude of the input current, and the direction of the magnetic field can be controlled by adjusting the positive and negative of the current. The magnetic field generated when the coil winding 16 is energized interacts with the magnetic field of the permanent magnet 23 to generate an action force and a reaction force, that is, the electromagnetic force of the shock absorber 100, to push the movable subassembly 2 up and down, thereby realizing the function of the shock absorber 100.

[0069] The above arrangement reduces the length of the coil winding 16, making the structure of the stator assembly 1 compact and facilitating the reduction in size of the shock absorber 100. Furthermore, the lead-out wire harness 161 of the coil winding 16 does not move with the mover assembly 2, thereby preventing pulling and wear of the lead-out wire harness 161. Within the travel range of the mover assembly 2, the mating length of the coil winding 16 and the permanent magnet 23 remains unchanged. Therefore, when the current flowing through the coil winding 16 remains unchanged, the number of magnetic flux lines passing through the air gap between the insulating partition 24 and the coil winding 16 remains unchanged, i.e., the magnetic induction intensity remains unchanged. This results in a constant electromagnetic force between the stator assembly 1 and the mover assembly 2, thereby outputting a stable damping force and reducing thrust fluctuations caused by changes in the coupling length between the coil winding 16 and the permanent magnet 23 due to suspension bouncing, thereby improving user comfort.

[0070] In some embodiments of the present application, the cylinder 22 includes a bottom plate 221 and a side plate 222 that are formed separately. The bottom plate 221 is used to be welded to the lower end of the side plate 222. A positioning hole is opened in the center of the upper side wall of the bottom plate 221. The second guide portion 21 extends to the positioning hole and is welded to the bottom plate 221. The positioning hole is beneficial to improving the verticality of the second guide portion 21 during welding, thereby improving the reliability of the shock absorber 100.

[0071] During the specific installation process, the guide column 12 and the coil winding 16 are first pressed together, and then the pressed guide column 12 and coil winding 16 are upwardly installed into the side plate 222, so that the upper end of the guide column 12 can extend above the side plate 222 for assembly. Then, the bottom plate 221 and the side plate 222 can be welded together to realize the assembly of the cylinder 22 and the coil winding 16.

[0072] In some embodiments of the present application, as shown in FIG4 , the shock absorber 100 of the present embodiment further includes a limit assembly 4, which is disposed on the stator mounting portion 11 and is used to limit the travel of the mover assembly 2. This arrangement prevents the mover assembly 2 from exceeding the travel range, thereby improving the reliability of the shock absorber 100.

[0073] In some embodiments of the present application, the limiting assembly 4 includes a first stop member 41 provided above the mover assembly 2. For example, as shown in Figure 2, a buffer block 17 is provided between the first guide portion and the tower top 13, the buffer block 17 protrudes from the lower side wall of the tower top 13, and the buffer block 17 is made of polyurethane material. The limiting assembly 4 includes a first stop member 41, the first stop member 41 is made of nylon material, the first stop member 41 is pressed and fixed on the buffer block 17 and is provided above the mover assembly 2. When the mover assembly 2 moves upward to the maximum position, the upper end of the mover assembly 2 can be supported on the first stop member 41 to achieve positioning, and the buffer block 17 and the first stop member 41 can reduce the impact and noise generated by the collision. In this way, the rigid collision between the mover assembly 2 and the tower top 13 can be avoided, thereby improving the reliability of the shock absorber 100.

[0074] In some embodiments of the present application, the movable subassembly 2 defines a moving channel 224, the stator assembly 1 is located in the moving channel 224, the upper end of the cylinder 22 is provided with a stop portion 223 extending toward the interior of the moving channel 224, and the limiting assembly 4 also includes a second stop member 42 located below the stop portion 223, and the stop portion 223 is suitable for contacting the second stop member 42 to limit the movable subassembly 2.

[0075] For example, referring to Figures 2, 4 and 5, the cylinder 22 of the mover assembly 2 is formed with a movable channel 224 that is open upward, and the stator assembly 1 can extend from the open end into the movable channel 224 to cooperate with the mover assembly 2. A stopper 223 is provided at the upper end of the cylinder 22, and the stopper 223 is configured to extend radially toward the inside of the movable channel 224. The limiting assembly 4 also includes a second stopper 42, which is arranged on the outside of the first guide portion and below the stopper 223. When the mover assembly 2 moves downward to the maximum position, the stopper 223 can contact the second stopper 42 to limit the mover assembly 2, thereby preventing the mover assembly 2 from separating from the stator assembly 1. As a result, the reliability of the shock absorber 100 is improved.

[0076] In some embodiments of the present application, as shown in FIG5 , the second stop member 42 is provided with a flexible buffer pad 43, and the buffer pad 43 is in sliding contact with the movable channel 224. It should be noted that the material of the buffer pad 43 can be an elastic material such as rubber. Through the above arrangement, when the stop portion 223 contacts the second stop member 42, the buffer pad 43 can reduce the impact and noise generated by the collision, and the buffer pad 43 can act as a sliding seal to prevent external impurities from entering the gap between the stator assembly 1 and the cylinder 22, thereby protecting the coil winding 16 from contamination and improving the overall performance of the shock absorber 100.

[0077] In some embodiments of the present application, the shock absorber 100 of the embodiment of the present application further includes a shock-absorbing spring 5, the two ends of which are respectively mounted to the vehicle body and the suspension. For example, as shown in Figure 4, the shock absorber 100 includes a shock-absorbing spring 5 and a spring upper base 6. The spring upper base 6 is fixed to the outside of the tower top 13 by an interference fit. The upper end of the shock-absorbing spring 5 is connected to the spring upper base 6 and the lower end is connected to the suspension. During the vibration of the suspension, the shock-absorbing spring 5 can deform to absorb the vibration energy of the suspension and reduce the impact. This helps to reduce the vibration transmitted to the vehicle body and improve the comfort of the passengers.

[0078] In some embodiments of the present application, the lower end of the damping spring 5 is mounted to the mover assembly 2. For example, as shown in FIG2 , the outer peripheral wall of the mover assembly 2 is provided with a spring lower base 7, which is arranged opposite to the spring upper base 6. The lower end of the damping spring 5 can be connected to the spring lower base 7 to mount the lower end of the damping spring 5 to the mover assembly 2. This arrangement can reduce the difficulty of installing the damping spring 5, improve the installation stability of the damping spring 5, and shorten the length of the damping spring 5, facilitating flexible arrangement and improving the reliability of the shock absorber 100.

[0079] The present application also proposes a vehicle.

[0080] A vehicle according to an embodiment of the present application includes: a vehicle frame, a vehicle body suspension, and the shock absorber 100 according to any one of the above embodiments.

[0081] According to the vehicle of the embodiment of the present application, a cooling flow path 14 is provided on the stator assembly 1, so that the coolant can liquid-cool the stator assembly 1, thereby improving the heat dissipation efficiency of the stator assembly 1, thereby improving the overall heat dissipation efficiency of the shock absorber 100, avoiding overheating and burning of the coil winding 16, improving the reliability of the shock absorber 100, and improving the overall performance of the vehicle.

[0082] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do 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 should not be understood as a limitation on the present application.

[0083] Furthermore, 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 the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means more than two, unless otherwise specifically defined.

[0084] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0085] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0086] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0087] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A shock absorber (100), wherein, Comprising: A stator assembly (1), the stator assembly (1) being adapted to be connected to a vehicle body, a cooling flow path (14) being provided in the stator assembly (1), the cooling flow path (14) being adapted to be connected to an external circulation loop; A rotor assembly (2), the rotor assembly (2) being adapted to be connected to a suspension, the rotor assembly (2) cooperating with the stator assembly (1), the rotor assembly (2) being movable relative to the stator assembly (1).

2. The shock absorber (100) according to claim 1, wherein, The stator assembly (1) is provided with a first guiding portion, the rotor assembly (2) is provided with a second guiding portion (21), the first guiding portion and the second guiding portion (21) are guidingly engaged to guide the moving direction of the rotor assembly (2), and the cooling flow path (14) is provided in the first guiding portion.

3. The shock absorber (100) according to claim 2, wherein, The first guiding portion is a guiding column (12) provided with a guiding groove (121), and the second guiding portion (21) is inserted into the guiding groove (121).

4. The shock absorber (100) according to claim 2 or 3, wherein, The cooling flow path (14) is provided with an inlet (14a) and an outlet (14b), the cooling flow path (14) includes an inlet flow channel (141) connected to the inlet (14a) and an outlet flow channel (142) connected to the outlet (14b), the inlet flow channel (141) and the outlet flow channel (142) are respectively communicated with a conducting flow channel (144) through a connecting flow channel (143), at least one end of the conducting flow channel (144) and at least one end of the connecting flow channel (143) are provided with openings located on the outer peripheral wall of the first guiding portion, and each opening is blocked by a blocking member.

5. The shock absorber (100) according to claim 4, wherein, Both ends of the conducting flow channel (144) and one end of each connecting flow channel (143) are provided with the openings.

6. The shock absorber (100) according to claim 4 or 5, wherein, The blocking member is a metal ball (15) located inside the first guiding portion.

7. The shock absorber (100) according to claim 6, wherein, The metal ball (15) is in interference fit with the opening.

8. The shock absorber (100) according to any one of claims 2-7, wherein, Further included is a detection assembly (3) for detecting the moving direction and moving displacement of the rotor assembly (2), the detection assembly (3) being adapted to be electrically connected to a control module.

9. The shock absorber (100) according to claim 8, wherein, The detection assembly (3) includes a position sensor (31) and a sensor grating (32), the sensor grating (32) is provided on the outer peripheral wall of the first guiding portion, and the position sensor (31) is provided on the rotor assembly (2).

10. The shock absorber (100) according to any one of claims 1-9, wherein, The stator assembly (1) includes a stator mounting portion (11) and a coil winding (16), the coil winding (16) is press-fitted into the stator mounting portion (11), the cooling flow path (14) is located inside the stator mounting portion (11), and the rotor assembly (2) includes a cylinder body (22) and a permanent magnet (23) provided on the cylinder body (22).

11. The shock absorber (100) according to claim 10, wherein, Further included is a limit assembly (4) for limiting the stroke of the rotor assembly (2), the limit assembly (4) being provided on the stator mounting portion (11).

12. The shock absorber (100) according to claim 11, wherein, The limit assembly (4) includes a first abutting member (41) provided above the rotor assembly (2).

13. The shock absorber (100) according to claim 12, wherein, The mover assembly (2) defines a moving channel (224), the stator assembly (1) is located within the moving channel (224), a stop portion (223) extending towards the interior of the moving channel (224) is provided at the upper end of the cylinder body (22), the limiting assembly (4) further includes a second stop member (42) located below the stop portion (223), and the stop portion (223) is adapted to contact the second stop member (42) to limit the mover assembly (2).

14. The shock absorber (100) according to claim 13, wherein, The second stop member (42) is provided with a flexible buffer pad (43), and the buffer pad (43) is in sliding contact with the moving channel (224).

15. The shock absorber (100) according to any one of claims 1-14, wherein, It further includes a damping spring (5), and two ends of the damping spring (5) are respectively mounted to the vehicle body and the suspension.

16. The shock absorber (100) according to claim 15, wherein, The lower end of the damping spring (5) is mounted to the mover assembly (2).

17. A vehicle, wherein, Comprising: A vehicle frame, a vehicle body suspension, and a shock absorber (100) according to any one of claims 1-16.

Images