Electromagnetic shock absorber and vehicle

Abstract

The utility model provides an electromagnetic shock absorber and a vehicle, and the electromagnetic shock absorber comprises a mover which is internally provided with a mounting channel; one part of the stator is arranged in the mounting channel, and the stator can move along the mounting channel; wherein the stator is internally provided with a plurality of flow channels for cooling liquid to circulate, the flow channels are used for cooling the stator, and the plurality of flow channels are arranged in a nested manner and are communicated with one another. According to the electromagnetic shock absorber, the multiple flow channels are formed in the stator, cooling liquid flows through the flow channels, active heat dissipation can be conducted on the stator, the multiple flow channels are arranged in a nested mode, the cooling liquid in the flow channels can be more evenly distributed in the stator, uniform heat dissipation of the stator is facilitated, and the heat dissipation effect of the stator is improved; safety problems caused by local high temperature abnormity are avoided, and reliability and durability of the electromagnetic shock absorber are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle shock absorption, and more particularly to an electromagnetic shock absorber and a vehicle comprising the electromagnetic shock absorber. BACKGROUND

[0002] A vehicle body is connected to a vehicle frame through a shock absorber, which can reduce the vibration received by the vehicle body and improve the comfort of riding. In the prior art, the shock absorber includes an electromagnetic shock absorber, which includes a mover and a stator. By controlling the relative movement of the mover and the stator, active shock absorption can be achieved, further reducing the vibration received by the vehicle body. However, during the operation of the electromagnetic shock absorber, the windings on the stator generate an induced magnetic field while generating heat, resulting in excessively high temperature of the electromagnetic shock absorber, which affects the reliability and durability of the electromagnetic shock absorber. SUMMARY

[0003] The present application provides a new technical solution for an electromagnetic shock absorber, which can at least solve the problem of excessively high temperature of the electromagnetic shock absorber in the prior art.

[0004] The present application also provides a vehicle comprising the above-mentioned electromagnetic shock absorber.

[0005] According to a first aspect of the present application, an electromagnetic shock absorber is provided, comprising: a mover, the mover being provided with a mounting channel; a stator, a part of the stator being arranged in the mounting channel, the stator being movable along the mounting channel; wherein the stator is provided with a plurality of flow channels for the flow of cooling liquid, for cooling the stator, the plurality of flow channels being nested and communicating with each other.

[0006] Optionally, the plurality of flow channels are arranged in layers.

[0007] Optionally, the plurality of flow channels include a first flow channel and a second flow channel, the second flow channel extending into the first flow channel.

[0008] Optionally, an outer circumferential surface of the second flow channel is spaced apart from an inner wall surface of the first flow channel, and an end of the second flow channel extending into the first flow channel is spaced apart from an end surface in the first flow channel.

[0009] Optionally, the plurality of flow channels have an inlet and an outlet, and the inlet and the outlet at least partially overlap in space.

[0010] Optionally, each flow channel extends along the axis of the stator.

[0011] Optionally, the axis of each flow channel coincides with the axis of the stator.

[0012] Optionally, the stator comprises a main body portion and a guide portion arranged along a radial direction of the stator, the main body portion is arranged in the mounting channel, an outer periphery of the main body portion is provided with the winding, and the guide portion extends out of an outer surface of the mover, and the at least one flow channel penetrates through the guide portion and extends into the main body portion.

[0013] Optionally, the second flow channel is a cooling pipe, the first flow channel is a blind hole extending along a radial direction of the stator and forming a first opening on a surface of the stator, one end of the cooling pipe is inserted into the blind hole, the other end of the cooling pipe has a second opening, and one of the first opening and the second opening is formed as a liquid inlet and the other is formed as a liquid outlet.

[0014] Optionally, the electromagnetic shock absorber further comprises a connecting piece arranged at the first opening, the connecting piece is provided with a mounting hole and a liquid guide channel, the cooling pipe is in sealed connection with the mounting hole, the second opening is exposed from an outer surface of the connecting piece, one end of the liquid guide channel is in communication with the first opening, and the other end of the liquid guide channel forms a third opening on the outer surface of the connecting piece.

[0015] Optionally, an axis of the mounting hole extends along an axis of the stator, and an angle between an axis of the liquid guide channel and the axis of the mounting hole is formed.

[0016] Optionally, an outer surface of the connecting piece is provided with a convex portion, and the other end of the liquid guide channel penetrates through the convex portion away from an end surface of the connecting piece to form the third opening.

[0017] Optionally, a sealing piece is arranged between the connecting piece and the stator.

[0018] Optionally, the cooling pipe is welded with the connecting piece.

[0019] According to a second aspect of the present application, a vehicle is provided, comprising: an electromagnetic shock absorber, which is any one of the electromagnetic shock absorbers described in the above embodiments; and a vehicle body and a vehicle frame, one of the vehicle body and the vehicle frame is connected with the mover, and the other of the vehicle body and the vehicle frame is connected with the stator.

[0020] According to the electromagnetic shock absorber of the present application, a plurality of flow channels are arranged in the stator to pass cooling liquid flow, the stator can be actively cooled, the plurality of flow channels are arranged in a nested manner, the cooling liquid in the flow channels can be more uniformly distributed in the stator, which is conducive to uniformly cooling the stator, improves the heat dissipation effect of the stator, avoids safety problems caused by local high temperature abnormalities, and improves the reliability and durability of the electromagnetic shock absorber.

[0021] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments thereof, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0023] Figure 1 is a perspective view of an electromagnetic shock absorber according to an embodiment provided by the present application;

[0024] Figure 2 is a cross-sectional view of an electromagnetic shock absorber according to an embodiment provided by the present application;

[0025] Figure 3 yes Figure 2 An enlarged view of the circled portion at A in the middle;

[0026] Figure 4 It is along Figure 2 Cross-sectional view at the middle BB;

[0027] Figure 5 This is a front view of a partial structure of an electromagnetic shock absorber according to an embodiment provided in the present application.

[0028] Reference numerals

[0029] Electromagnetic shock absorber 100;

[0030] Mover 10; mounting channel 11; through hole 12; magnet 13;

[0031] stator 20; main body 21; winding 211; wiring 212; guide portion 22; coil slot 221; mounting slot 222; first flow channel 23; closed end 231; first opening 232; second flow channel 24; outlet 241; second opening 242;

[0032] Connecting member 40; mounting hole 41; liquid guide channel 42; protrusion 43; sealing member 44; third opening 45;

[0033] Guide bearing 50;

[0034] Position sensor 60; sensor bar 61; sensor head 62;

[0035] Upper tower seat 70; spring upper seat 71; dust cover 72; coil spring 73; spring lower seat 74; fork arm 75; tower top shock absorbing structure 76; upper buffer body 77; lower limit pad 78; guide member 79. DETAILED DESCRIPTION

[0036] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0037] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0038] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0039] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0040] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0041] The electromagnetic shock absorber 100 according to the embodiment of the present application will be described in detail below with reference to the accompanying drawings.

[0042] like Figures 1 to 5 As shown, the electromagnetic shock absorber 100 according to the embodiment of the present application includes: a mover 10 and a stator 20 .

[0043] Specifically, the mover 10 has an installation channel 11 therein; the stator 20 has a portion thereof disposed in the installation channel 11, and the stator 20 is movable along the installation channel 11; wherein, the stator 20 has a plurality of flow channels for circulating coolant therein for cooling the stator 20, and the plurality of flow channels are nested and interconnected.

[0044] In other words, the electromagnetic shock absorber 100 according to the embodiment of the present application is mainly composed of a mover 10 and a stator 20. The electromagnetic shock absorber 100 has active adjustment capabilities, which can reduce vibration according to the detected road conditions and driving conditions to maintain vehicle body stability.

[0045] The mover 10 may have a mounting channel 11 therein, which may be generally cylindrical. The stator 20 and mover 10 may be coaxially arranged, with the axis of the stator 20 extending in a first direction. A portion of the stator 20 may be disposed within the mounting channel 11, with the axis of the mounting channel 11 extending in the first direction. Controlling the movement of the stator 20 along the mounting channel 11 can create relative motion between the stator 20 and the mover 10, thereby controlling vehicle body vibration.

[0046] The stator 20 can be provided with a plurality of flow channels, and the plurality of flow channels can be in communication with each other to form a cooling channel, and the cooling channel can be used for flowing of the cooling liquid to cool the stator 20.

[0047] In addition, the plurality of flow channels can be nested, and the number of the nested flow channels can be greater than or equal to two. When two flow channels are nested, the two flow channels can be defined as a first flow channel and a second flow channel, and the first flow channel can be embedded in the second flow channel and in communication with the second flow channel. When three flow channels are nested, the three flow channels can be defined as a first flow channel, a second flow channel, and a third flow channel, the first flow channel can be embedded in the second flow channel and in communication with the second flow channel, and the first flow channel and the second flow channel can form an integrated body embedded in the third flow channel, and the second flow channel can be in communication with the third flow channel. When more than three flow channels are nested, the plurality of flow channels can be nested in sequence and in communication in sequence according to the nesting order.

[0048] Therefore, the electromagnetic shock absorber 100 provided by the embodiment of the present application can be actively cooled by the plurality of flow channels in the stator 20, the plurality of flow channels can be nested, and the cooling liquid in the flow channels can be more uniformly distributed in the stator 20, which is beneficial to uniform cooling of the stator 20, improves the cooling effect of the stator 20, avoids local high temperature anomalies, and improves the reliability and durability of the electromagnetic shock absorber 100.

[0049] In some optional embodiments, the axis of the mounting channel 11 can extend in a first direction as shown in FIG. 1. In the first direction, the first end of the mover 10 can be provided with a through hole 12, the through hole 12 can be in communication with the mounting channel 11, and the second end of the mover 10 can be a closed end 231. The mover 10 can be provided with a magnet 13. Figure 2

[0050] The stator 20 can be composed of at least two parts, i.e., a first part and a second part, the first part of the stator 20 can be accommodated in the mounting channel 11, and the outer circumferential side of the first part of the stator 20 can be provided with a winding 211, the winding 211 can be arranged opposite to the magnet 13, and the winding 211 can generate an induced magnetic field after being electrified to exert a magnetic force on the magnet 13, and the component of the magnetic force in the first direction can drive the mover 10 to move relative to the stator 20 in the first direction.

[0051] The second part of the stator 20 can pass through the through hole 12 and extend out of the mounting channel 11. The second part of the stator 20 can be connected with one of the vehicle body and the vehicle frame, and the mover 10 can be connected with the other of the vehicle body and the vehicle frame. When the vehicle vibrates, the size and direction of the current in the winding 211 can be controlled to control the stroke of the movement of the mover 10 to reduce the vibration.

[0052] ​It should be noted that the connection between the stator 20 and the vehicle body or frame, and the connection between the mover 10 and the vehicle body or frame, can be direct connection or indirect connection, which is not limited herein.

[0053] In some embodiments, the mover 10 can include a shell, an end cover and the magnet 13. The shell can be a cylindrical member, and the mounting channel 11 can be arranged in the shell. One end of the shell is open to facilitate assembly of the stator 20, and the other end of the shell can be provided with the through hole 12. The end cover can be connected to the shell by bolts to close the mounting channel 11. The magnet 13 can be arranged on the inner wall surface of the shell to cooperate with the winding 211 to drive the mover 10 to move in the first direction. Optionally, the permanent magnet 13 can be a magnetic steel.

[0054] The end cover away from the one end of the shell can be provided with the fork arm 75, and the end of the fork arm 75 away from the end cover can be connected to the frame or the vehicle body by bolts.

[0055] According to one embodiment of the present application, the plurality of flow channels are arranged in layers, that is, the plurality of flow channels can be formed as a multi-layer structure, and each flow channel can be formed as a layer. In the multi-layer flow channels, the flow channels in the outer layers are closer to the outer circumferential surface of the stator 20. Since the temperature rise of the stator 20 is mainly caused by the heating of the winding 211 arranged on the outer circumference of the stator 20, the heat is mainly concentrated on the outer circumferential surface of the stator 20. Therefore, by arranging the plurality of flow channels in layers, the outer flow channels can be better utilized to dissipate heat from the stator 20, thereby reducing the temperature of the outer circumferential surface of the stator 20.

[0056] According to some other embodiments of the present application, the plurality of flow channels include a first flow channel 23 and a second flow channel 24, and the second flow channel 24 extends into the first flow channel 23.

[0057] Specifically, as shown in Figure 2 The first flow channel 23 and the second flow channel 24 can be nested, and the first flow channel 23 can surround the outer circumference of the second flow channel 24. The cooling liquid can flow from the second flow channel 24 and then flow out of the first flow channel 23, or the cooling liquid can flow from the first flow channel 23 and then flow out of the second flow channel 24, which is not limited herein.

[0058] In the present embodiment, two flow channels, the second flow channel 24 and the first flow channel 23, are arranged on the stator 20, which has the advantage of simple structure and is conducive to reducing the number of flow channels and reducing the heat dissipation cost of the electromagnetic shock absorber 100. In addition, the second flow channel 24 extends into the first flow channel 23, which can make the cooling liquid more uniformly distributed in the stator 20, which is conducive to uniformly dissipating heat from the stator 20.

[0059] In some embodiments of the present application, the outer circumferential surface of the second flow channel 24 is spaced apart from the inner wall surface of the first flow channel 23, and the end of the second flow channel 24 extending into the first flow channel 23 is spaced apart from the end surface in the first flow channel 23.

[0060] Specifically, the inner wall surface of the first flow channel 23 and the outer circumferential surface of the second flow channel 24 can be spaced apart to form an annular gap. The inner wall surface of the first flow channel 23 and the outer circumferential surface of the second flow channel 24 can be completely free of contact, the cross section of the annular gap can be annular, and the cooling liquid in the annular gap is more uniformly distributed in the stator 20, so that the heat dissipation of the stator 20 is more uniform.

[0061] The first end of the first flow channel 23 can extend into the stator 20 and form a closed end 231, and the second end of the first flow channel 23 can be open. The closed first end of the first flow channel 23 can prevent the cooling liquid from overflowing into the mounting channel 11, and the second end of the first flow channel 23 can allow the cooling liquid to flow into or out of the first flow channel 23, realizing the circulating flow of the cooling liquid.

[0062] The first end of the second flow channel 24 can extend into the first flow channel 23 through the second end of the first flow channel 23, and be spaced apart from the first end of the first flow channel 23 to form an end channel, and the second end of the second flow channel 24 can extend towards the second end of the first flow channel 23. The end channel can be used to communicate the second flow channel 24 and the first flow channel 23.

[0063] When the cooling liquid flows from the second flow channel 24 to the first flow channel 23, the cooling liquid can pass through the second end of the second flow channel 24, the first end of the second flow channel 24, the end channel, the annular gap between the second flow channel 24 and the first flow channel 23, and the second end of the first flow channel 23 in sequence.

[0064] When the cooling liquid flows from the first flow channel 23 to the second flow channel 24, the cooling liquid can pass through the second end of the first flow channel 23, the annular gap between the second flow channel 24 and the first flow channel 23, the end channel, the first end of the second flow channel 24, and the second end of the second flow channel 24 in sequence.

[0065] According to some optional embodiments of the present application, the plurality of flow channels have an inlet and an outlet, and the inlet and the outlet at least partially overlap in space.

[0066] Specifically, the plurality of flow channels can form a cooling channel, and the cooling channel can have an inlet and an outlet. The cooling liquid flows into the cooling channel from the inlet and flows out of the cooling channel from the outlet.

[0067] The liquid inlet and the liquid outlet are spatially coincident or partially coincident. For example, the second flow channel 24 and the first flow channel 23 can be coaxially arranged, and the liquid inlet and the liquid outlet can be coincident or partially coincident in the axial direction of the second flow channel 24. The projection of the liquid inlet along the axial direction of the second flow channel 24 and the projection of the liquid outlet along the axial direction of the second flow channel 24 can be partially coincident or completely coincident. Thus, the layout of the liquid inlet and the liquid outlet on the stator 20 can be optimized, and the external cooling liquid circuit can be conveniently connected to the liquid inlet and the liquid outlet, respectively.

[0068] In some optional embodiments, the liquid inlet and the liquid outlet can be arranged in the same plane.

[0069] According to some other embodiments of the present application, each flow channel extends along the axial direction of the stator 20. Thus, the cooling liquid in the flow channel can flow along the extension direction of the stator 20, thereby dissipating heat from each section of the stator 20 in the axial direction of the stator 20. This can improve the uniformity of heat dissipation of the stator 20, avoid local high temperature, and improve the reliability and durability of the electromagnetic shock absorber 100.

[0070] In some specific embodiments of the present application, the axis of each flow channel coincides with the axis of the stator 20. Thus, the plurality of flow channels can be coaxially arranged with the stator 20, and each flow channel can be centrally symmetrically distributed along the axis of the stator 20. This can make the distribution of the cooling liquid in each flow channel more uniform on the stator 20, further improve the uniform heat dissipation effect of the stator 20, and improve the reliability and durability of the electromagnetic shock absorber 100.

[0071] According to some optional embodiments of the present application, the stator 20 includes a main body portion 21 and a guide portion 22 arranged along the radial direction of the stator 20. The main body portion 21 is arranged in the mounting channel 11, and the outer periphery of the main body portion 21 is provided with a winding 211. The guide portion 22 protrudes from the outer surface of the mover 10, and at least one flow channel penetrates the guide portion 22 and extends into the main body portion 21.

[0072] Specifically, the first portion of the stator 20 can be the main body portion 21, and the second portion of the stator 20 can be the guide portion 22. The main body portion 21 and the guide portion 22 can be cylindrical members extending along the first direction, respectively. The main body portion 21 can be accommodated in the mounting channel 11, and the main body portion 21 can not be separated from the mounting channel 11 during the movement of the mover 10 relative to the stator 20 along the first direction. The winding 211 can be arranged on the outer periphery of the main body portion 21.

[0073] In the first direction, the first end of the guide portion 22 can be connected to the end of the main body portion 21, and the second end of the guide portion 22 can protrude out of the mounting channel 11 through the through hole 12 for connecting to the vehicle body or frame. The guide portion 22 can cooperate with the mover 10 to guide the movement of the mover 10 along the first direction.

[0074] A portion of each flow channel can extend into the main body 21 to cool the winding 211 on the outer peripheral side of the main body 21, and another portion of each flow channel can pass through the installation channel 11 through the guide portion 22, so that the multiple flow channels are connected to the external cooling liquid circuit, and the cooling liquid outside the installation channel 11 is introduced into the main body 21 located in the installation channel 11.

[0075] In some other embodiments, a guide bearing 50 may be provided at the first end of the mover 10. The guide bearing 50 may be fixed to the mover 10 and disposed corresponding to the through hole 12. The guide portion 22 may be a guide rod, the axis of which may extend along the first direction. The guide rod may sequentially pass through the through hole 12 and the guide bearing 50. A guide structure may be formed between the guide bearing 50 and the guide rod, i.e., the guide bearing 50 may guide the guide rod to move in the first direction, thereby providing a primary positioning guide for the relative motion between the stator 20 and the mover 10.

[0076] In other optional embodiments, the mounting channel 11 may be cylindrical, the shape of the main body 21 may be adapted to the mounting channel 11, a guide member 79 may be provided on the inner wall surface of the mounting channel 11, the axis of the main body 21 may coincide with the axis of the mounting channel 11, and a guide structure may be formed between the guide member 79 and the main body 21 to provide secondary positioning guidance for the relative movement between the stator 20 and the mover 10, thereby ensuring a working air gap between the stator 20 and the mover 10. Optionally, the guide member 79 may be made of a non-magnetic material.

[0077] According to some other embodiments of the present application, the second flow channel 24 is a cooling pipe, the first flow channel 23 is a blind hole, the blind hole extends along the radial direction of the stator 20 and forms a first opening 232 on the surface of the stator 20, one end of the cooling pipe is inserted into the blind hole, and the other end of the cooling pipe has a second opening 242, one of the first opening 232 and the second opening 242 is formed as a liquid inlet, and the other is formed as a liquid outlet.

[0078] Specifically, the stator 20 may be provided with a blind hole, which may be formed as the first flow channel 23. A cooling pipe may be inserted into the blind hole, which may be formed as the second flow channel 24. Optionally, the cooling pipe may extend along the first direction, and the blind hole may extend along the first direction.

[0079] The first end of the blind hole can be a closed end 231, and the second end of the blind hole can be an open end, which can pass through the stator 20 and extend out of the outer surface of the mounting channel 11 to form a first opening 232. The cooling pipe can have a cooling pipe channel with both ends open, the cooling pipe can be inserted into the blind hole, the first end of the cooling pipe can be formed as an outlet 241, which can be spaced apart from the closed end 231 to form an end channel. The second end of the cooling pipe is away from the closed end 231 and is formed as a second opening 242.

[0080] In the first opening 232 and the second opening 242, one can be formed as a liquid inlet, and the other can be formed as a liquid outlet.

[0081] For example, when the first opening 232 is a liquid inlet and the second opening 242 is a liquid outlet, the cooling liquid can flow in from the first flow channel 23 and flow out from the second flow channel 24. When the first opening 232 is a liquid outlet and the second opening 242 is a liquid inlet, the cooling liquid can flow in from the second flow channel 24 and flow out from the first flow channel 23.

[0082] As shown in Figure 2 The cooling pipe can define the second flow channel 24, and the axis of the cooling pipe can coincide with the axis of the second flow channel 24. The outlet 241 can be spaced apart from the end face of the closed end 231 of the first flow channel 23 to communicate the second flow channel 24 and the first flow channel 23.

[0083] In the present embodiment, the second flow channel 24 is provided in the cooling pipe, and the first flow channel 23 is provided as a blind hole, which can be formed by drilling a hole in the stator, and then inserting an independent cooling pipe into the blind hole to form the structure of the plurality of flow channels nested in the present embodiment, which is advantageous to simplify the processing and assembly of the flow channels, simplify the production process of the electromagnetic shock absorber 100, and reduce the production cost of the electromagnetic shock absorber 100. In addition, the cooling pipe cooperates with the blind hole to have the advantages of convenient disassembly and high reliability.

[0084] In some specific embodiments of the present application, the electromagnetic shock absorber 100 further comprises a connecting piece 40, which is arranged at the first opening 232, and the connecting piece 40 is provided with a mounting hole 41 and a liquid guide channel 42, the cooling pipe is sealingly connected with the mounting hole 41, the second opening 242 is exposed from the outer surface of the connecting piece 40, one end of the liquid guide channel 42 communicates with the first opening 232, and the second end of the liquid guide channel 42 forms a third opening 45 on the outer surface of the connecting piece 40.

[0085] Specifically, as shown in Figure 2 and Figure 3As shown, the connecting piece 40 can be connected with the second end of the guide portion 22 and close the first opening 232, and the connecting piece 40 and the guide portion 22 can form a relatively closed structure in cooperation. It should be noted that the connection between the connecting piece 40 and the guide portion 22 can be fixed connection or detachable connection, which is not limited herein.

[0086] Optionally, the connecting piece 40 can be a pipe joint, which can be screwed with the second end of the guide portion 22 to facilitate maintenance and replacement of the pipe joint.

[0087] The connecting piece 40 is provided with a mounting hole 41 and a liquid guide channel 42, the axis of the mounting hole 41 can coincide with the axis of the cooling pipe, and the second end of the cooling pipe can pass through the mounting hole 41 to extend out of the connecting piece 40, so that the liquid inlet is located outside the connecting piece 40 and the guide portion 22, facilitating the communication of the liquid inlet with the pipeline in the external cooling liquid circuit.

[0088] The cooling pipe and the mounting hole 41 can be sealingly connected to avoid liquid leakage at the connection between the cooling pipe and the connecting piece 40.

[0089] The first end of the liquid guide channel 42 can communicate with the first flow channel 23, and the second end of the liquid guide channel 42 can pass through the outer surface of the connecting piece 40 to form a third opening 45, so that the third opening 45 can communicate with the external cooling liquid circuit.

[0090] Therefore, the connecting piece 40 can close the first opening 232 on the guide portion 22, and when the liquid inlet and the liquid outlet partially overlap in space, the flow direction of the cooling liquid can be changed through the liquid guide channel 42, so that the third opening 45 and the first opening 232 can be staggered, facilitating the communication of the electromagnetic shock absorber 100 with the external cooling liquid circuit.

[0091] In some other embodiments, the liquid inlet and the liquid outlet can be mutually adjusted, i.e. Figure 3 The liquid outlet in the above can be used for liquid inlet, the liquid inlet can be used for liquid outlet, and the cooling liquid can flow from the liquid outlet, sequentially pass through the first flow channel 23 and the second flow channel 24, and then flow out from the liquid inlet.

[0092] According to some optional embodiments of the present application, the axis of the mounting hole 41 extends along the axis of the stator 20, and the axis of the liquid guide channel 42 and the axis of the mounting hole 41 have an included angle, which can make the first opening 232 and the third opening 45 face different directions, facilitating the communication of the first opening 232 and the third opening 45 with the external pipeline. In addition, the setting of the included angle between the axis of the liquid guide channel 42 and the axis of the mounting hole 41 is also beneficial to simplify the structure of the connecting piece 40 and facilitate the machining of the mounting hole 41 and the guide channel.

[0093] Optionally, the angle between the axis of the liquid guiding channel 42 and the axis of the mounting hole 41 may be 90°, so as to further simplify the processing of the mounting hole 41 and the liquid guiding channel 42 .

[0094] According to some other embodiments of the present application, a protrusion 43 is provided on the outer surface of the connecting piece 40, and the second end of the liquid guiding channel 42 passes through the protrusion 43 away from an end surface of the connecting piece 40 to form a third opening 45, thereby facilitating the connection of external pipelines with the protrusion 43 to connect the liquid guiding channel 42.

[0095] In some specific embodiments of the present application, a seal 44 is provided between the connector 40 and the stator 20 to seal the connection between the connector 40 and the stator 20 and prevent coolant from leaking from the connection between the connector 40 and the stator 20 .

[0096] like Figure 3 As shown, the connector 40 has a stepped portion inside, and the sealing member 44 can be a sealing ring, which can be disposed between the stepped portion and the end surface of the second end of the guide portion 22. When the connector 40 and the guide portion 22 are threaded together, tightening the connector 40 can squeeze the sealing ring to form a seal at the connection between the connector 40 and the guide portion 22.

[0097] According to some optional embodiments of the present application, the cooling pipe is welded to the connector 40. Specifically, the cooling pipe passes through the mounting hole 41 of the connector 40, and the outer wall of the cooling pipe and the mounting hole 41 can be welded together to form a seal at the connection between the cooling pipe and the connector 40, thereby preventing the coolant flowing into the liquid guide channel 42 from flowing out of the mounting hole 41.

[0098] In addition, since the cooling pipe is connected to the connector 40 by welding, the machining accuracy requirements for the mounting hole 41 and the outer peripheral surface of the cooling pipe are not high, which is beneficial to reducing the machining cost of multiple flow channels.

[0099] In some other optional embodiments, the cooling tube and the mounting hole 41 may be interference-fitted to form a seal, or a sealing ring may be provided between the outer circumference of the cooling tube and the inner wall of the mounting hole 41 .

[0100] According to some other embodiments of the present application, in the radial direction of the stator 20, at least a portion of the winding 211 is opposite to the first flow channel 23, so that the coolant in the first flow channel 23 can cool the winding 211 and improve the cooling effect.

[0101] For example, the second end of the cooling tube can be opposite to the winding 211 in the radial direction of the stator 20, so that a portion of the second flow channel 24 and a portion of the first flow channel 23 can be respectively opposite to the winding 211, so that the cooling liquid can approach the winding 211 to cool the winding 211.

[0102] In some embodiments of the present application, at least one coil groove 221 is provided on the outer circumferential surface of the guide portion 22, each coil groove 221 extends along the axial direction of the mounting passage 11, and the wiring 212 of the winding 211 extends out of the mounting passage 11 through the coil groove 221. As shown in the drawings, each coil groove 221 can extend along the first direction, one end of the coil groove 221 can extend to the winding 211, and the other end of the coil groove 221 can extend out of the mounting passage 11. Figure 2

[0103] According to some optional embodiments of the present application, a mounting groove 222 is provided on the outer circumferential surface of the guide portion 22, the mounting groove 222 extends along the axial direction of the mounting passage 11, and the electromagnetic shock absorber 100 further comprises a position sensor 60. The position sensor 60 comprises an induction strip 61 and an induction head 62, the induction strip 61 extends along the axial direction of the mounting passage 11 and is accommodated in the mounting groove 222. The induction head 62 is provided on the first end of the mover 10 and is used in cooperation with the induction strip 61 to detect the relative position of the mover 10 and the stator 20. When the mover 10 moves relative to the stator 20, the induction head 62 moves relative to the induction strip 61. The induction strip 61 can be an induction magnetic strip.

[0104] According to other embodiments of the present application, the electromagnetic shock absorber 100 further comprises a spring upper seat 71, a coil spring 73 and a spring lower seat 74. The spring upper seat 71, the coil spring 73 and the spring lower seat 74 are respectively provided around the outer circumferential side of the portion of the guide portion 22 that extends out of the mounting passage 11. The spring upper seat 71 and the spring lower seat 74 can be spaced apart along the axial direction of the mounting passage 11, the coil spring 73 can be arranged between the spring upper seat 71 and the spring lower seat 74, and the spring lower seat 74 can be fixed to the first end of the mover 10. Thus, further shock absorption can be achieved by the elasticity of the coil spring 73, and the shock absorption effect of the electromagnetic shock absorber 100 can be improved.

[0105] Optionally, a dust cover 72 can be provided between the spring upper seat 71 and the spring lower seat 74, and the portion of the guide portion 22 that extends out of the mounting passage 11 and the position sensor 60 can be accommodated in the dust cover 72.

[0106] According to some optional embodiments of the present application, a tower top shock absorption structure 76 is provided on the side of the spring upper seat 71 away from the spring lower seat 74, the tower top shock absorption structure 76 is sleeved on the guide portion 22, the tower top shock absorption structure 76 is provided with an upper tower seat 70 on the side away from the spring lower seat 74, and the upper tower seat 70 can be connected to one of the vehicle body or the vehicle frame.

[0107] ​According to some other embodiments of the present application, the electromagnetic shock absorber 100 further comprises an upper buffer 77 and a lower limit pad 78. The upper buffer 77 can be arranged on the side of the guide bearing 50 away from the rotor, and can be sleeved on the outer circumferential side of the guide portion 22. Optionally, the upper buffer 77 can be a rubber piece. The lower limit pad 78 can be arranged in the mounting channel 11 and located at the end of the stator 20 towards the guide bearing 50.

[0108] When the mover 10 moves to the limit position in the positive direction of the first direction as shown in FIG. 6, the lower limit pad 78 can abut against the end face of the mounting channel 11 close to the guide bearing 50 to serve as a limiting buffer. Figure 2

[0109] When the mover 10 moves to the limit position in the reverse direction of the first direction as shown in FIG. 7, the upper buffer 77 can abut against the guide bearing 50 to serve as a limiting buffer. Figure 2

[0110] The embodiments of the present application further provide a vehicle comprising the electromagnetic shock absorber 100, a vehicle body and a vehicle frame. The electromagnetic shock absorber 100 can be any of the electromagnetic shock absorbers 100 described above. One of the vehicle body and the vehicle frame is connected with the mover 10, and the other of the vehicle body and the vehicle frame is connected with the stator 20. The vehicle frame can be connected with wheels, and the vehicle body can be provided with a passenger compartment.

[0111] For example, the fork arm 75 of the second end of the mover 10 can be connected with the vehicle frame, and the guide portion 22 of the stator 20 can be indirectly connected with the vehicle body.

[0112] Since the electromagnetic shock absorber 100 according to the embodiments of the present application has the above technical effects, the vehicle according to the embodiments of the present application also has corresponding technical effects, i.e., the stator 20 can be actively cooled, the cooling liquid in the flow channel can be more uniformly distributed in the stator 20, which is beneficial to uniformly cooling the stator 20, improves the cooling effect of the stator 20, avoids safety problems caused by local high temperature abnormalities, and improves the reliability and durability of the electromagnetic shock absorber 100.

[0113] Although some specific embodiments of the present application have been described in detail by examples, those skilled in the art should understand that the above examples are only for illustration, but not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.​​

Claims

1. An electromagnetic shock absorber, characterized in that: include: A mover, wherein a mounting channel is provided in the mover; a stator, a portion of which is disposed in the mounting channel, and the stator is movable along the mounting channel; Wherein, a plurality of flow channels for cooling liquid to circulate are provided in the stator for cooling the stator, and the plurality of flow channels are nested and interconnected.

2. The electromagnetic shock absorber according to claim 1, characterized in that A plurality of the flow channels are stacked inside and outside.

3. The electromagnetic shock absorber according to claim 1, characterized in that The plurality of flow channels include a first flow channel and a second flow channel, wherein the second flow channel extends into the first flow channel.

4. The electromagnetic shock absorber according to claim 3, characterized in that The outer peripheral surface of the second flow channel is spaced apart from the inner wall surface of the first flow channel, and the end of the second flow channel extending into the first flow channel is spaced apart from the end surface in the first flow channel.

5. The electromagnetic shock absorber according to claim 1, characterized in that The plurality of flow channels have a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet at least partially overlap in space.

6. The electromagnetic shock absorber according to claim 1, characterized in that Each of the flow channels extends along the axial direction of the stator.

7. The electromagnetic shock absorber according to claim 1, characterized in that The axis of each flow channel coincides with the axis of the stator.

8. The electromagnetic shock absorber according to claim 1, characterized in that The stator includes a main body and a guide portion arranged along its own radial direction. The main body is arranged in the installation channel. A winding is provided on the outer periphery of the main body. The guide portion extends out of the outer surface of the mover. At least one flow channel passes through the guide portion and extends into the main body.

9. The electromagnetic shock absorber according to claim 3, characterized in that: The second flow channel is a cooling pipe, and the first flow channel is a blind hole. The blind hole extends along the radial direction of the stator and forms a first opening on the surface of the stator. One end of the cooling pipe is inserted into the blind hole, and the other end of the cooling pipe has a second opening. One of the first opening and the second opening is formed as a liquid inlet, and the other is formed as a liquid outlet.

10. The electromagnetic shock absorber according to claim 9, characterized in that Also includes: A connecting member, wherein the connecting member cover is arranged at the first opening, the connecting member is provided with a mounting hole and a liquid guide channel, the cooling pipe is sealed and connected to the mounting hole, the second opening is exposed from the outer surface of the connecting member, one end of the liquid guide channel is connected to the first opening, and the second end of the liquid guide channel forms a third opening on the outer surface of the connecting member.

11. The electromagnetic shock absorber according to claim 10, characterized in that: The axis of the mounting hole extends along the axis of the stator, and an angle is formed between the axis of the liquid guiding channel and the axis of the mounting hole.

12. The electromagnetic shock absorber according to claim 10, characterized in that A convex portion is provided on the outer surface of the connecting member, and the second end of the liquid guiding channel passes through an end surface of the convex portion away from the connecting member to form the third opening.

13. The electromagnetic shock absorber according to claim 10, characterized in that A sealing member is provided between the connecting member and the stator.

14. The electromagnetic shock absorber according to claim 10, characterized in that The cooling pipe and the connecting piece are welded.

15. A vehicle, characterized in that: include: An electromagnetic shock absorber, wherein the electromagnetic shock absorber is the electromagnetic shock absorber according to any one of claims 1 to 14; A vehicle body and a vehicle frame, one of the vehicle body and the vehicle frame is connected to the mover, and the other of the vehicle body and the vehicle frame is connected to the stator.

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