Electric motor, suspension system and vehicle

Abstract

An electric motor, a suspension system and a vehicle. The electric motor comprises a first assembly, a second assembly, a displacement sensor and a first conductive member, wherein the first assembly and the second assembly move relative to each other in a first direction; the displacement sensor comprises a magnetic scale and a reading head, the magnetic scale being arranged on the first assembly, and the reading head being arranged on the second assembly, the reading head cooperating with the magnetic scale to detect the relative displacement between the second assembly and the first assembly; the first conductive member has a first end suitable for electrically connecting to an electric motor controller, and a second end for electrically connecting to a winding; and the first conductive member is fixedly connected to the first assembly, the first conductive member comprises a first section, the first section corresponding to the magnetic scale in a second direction; when the second assembly moves relative to the first assembly, the distance between the first section and the magnetic scale in the second direction remains unchanged, the second direction being perpendicular to the first direction.

Description

Motors, suspension systems, and vehicles

[0001] This application claims priority to Chinese patent application No. 202411645053.9 filed on November 15, 2024; and priority to Chinese patent application No. 202410385834.2 filed on March 29, 2024, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present disclosure relates to the field of vehicle technology, and in particular to a motor, a suspension system, and a vehicle. Background Art

[0003] A motor typically includes a first component, a second component, and a sensor for detecting relative displacement between the first and second components. The first component includes a winding assembly, and the second component includes a permanent magnet. The winding assembly is connected to an external motor controller via connecting wires. When current is supplied to the winding assembly via the connecting wires, electromagnetic induction is generated between the winding assembly and the permanent magnet, resulting in relative motion between the first and second components. Summary of the Invention

[0004] The present disclosure provides a motor, a suspension system, and a vehicle, aiming to solve the problem of low accuracy in detecting the position of a motor.

[0005] In a first aspect, a motor is provided, which includes a first component, a second component, a displacement sensor and a conductive member, the first component includes a winding, and the first component and the second component move relative to each other along a first direction; the displacement sensor includes a magnetic scale and a reader, the magnetic scale is provided in the first component, and the reader is provided in the second component, and the reader cooperates with the magnetic scale to detect the relative displacement of the second component and the first component; the first end of the conductive member is suitable for being electrically connected to a motor controller, and the second end of the conductive member is electrically connected to the winding; the conductive member is connected to the first component, the conductive member includes a first section, and the first section corresponds to the magnetic scale in the second direction; during the movement of the second component relative to the first component, the distance of the first section relative to the magnetic scale in the second direction does not change, and the second direction is perpendicular to the first direction.

[0006] In a second aspect, a suspension system is provided. The suspension system includes a motor, a fixing seat and a fork arm. The fixing seat is connected to the first component; the fork arm is connected to the second component.

[0007] According to a third aspect, a vehicle is provided. The vehicle includes a suspension system, a body, and wheels. One of the fixing seat and the fork arm is connected to the body; and the other of the fixing seat and the fork arm is connected to the wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] FIG1 is a schematic diagram of a vehicle according to some embodiments;

[0009] FIG2 is a perspective view of the suspension system in the vehicle shown in FIG1 ;

[0010] FIG3 is a structural diagram of the suspension system shown in FIG2 without the fixing seat and the elastic element;

[0011] FIG4 is a cross-sectional view of the suspension system shown in FIG3 ;

[0012] FIG5 is a partial enlarged view of the circle A in FIG4 ;

[0013] FIG6 is a partial enlarged view of the circle B in FIG4 ;

[0014] FIG7 is a cross-sectional structural diagram of the core shaft of the motor in the suspension system shown in FIG4;

[0015] FIG8 is a structural diagram of a connection method between the first conductive member and the support member of the motor in the suspension system shown in FIG4 ;

[0016] FIG9 is a cross-sectional view along line EE in FIG8 ;

[0017] FIG10 is a structural diagram of the first conductive member shown in FIG8 ;

[0018] FIG11 is a structural diagram of the support member shown in FIG8 ;

[0019] FIG12 is a top view of the mandrel shown in FIG7;

[0020] FIG13 is a top view of the first conductive member and the support member shown in FIG8 ;

[0021] FIG14 is a structural diagram of the support member shown in FIG11 from an opposite side perspective;

[0022] FIG15 is a structural diagram of another connection method between the first conductive member and the support member according to some embodiments;

[0023] FIG16 is a structural diagram of the motor after the first conductive member and the support member shown in FIG15 are installed on the core shaft;

[0024] FIG17 is a cross-sectional view along line FF in FIG16;

[0025] FIG18 is a structural diagram of the lead-out section of the first conductive member shown in FIG15 extending out of the supporting member;

[0026] FIG19 is a structural diagram of FIG15 when the first conductive member passes through the second head and the second conductive body does not completely enter the receiving groove;

[0027] FIG20 is a structural diagram of the first conductive member shown in FIG15 when the second conductive body enters the receiving groove but the lead-out section is not led out to the outside of the support member;

[0028] FIG21 is a structural diagram of the core shaft of the motor shown in FIG17;

[0029] FIG22 is a front view of the core shaft of the motor shown in FIG17;

[0030] FIG23 is a cross-sectional view along line MM in FIG22;

[0031] FIG24 is a partial enlarged view of the circle C in FIG17;

[0032] FIG25 is a partial enlarged view of circle D in FIG15 .

[0033] FIGURES: 1000, vehicle; 100, vehicle body; 200, wheel; 300, suspension system; 10, motor; 20, fixing seat; 30, fork arm; 40, lower support; 50, elastic element; 1, first component; 11, core shaft; 111, first shaft segment; 112, second shaft segment; 112A, second chamber; 113, first chamber; 113A, boss; 113B, first fixing portion; 114, second through hole; 115, engaging hole; 115A, second guide surface; 11A, mounting groove; 11B, first through hole; 12, winding; 121, iron core; 121A, coil slot; 13, plug; 2, second component; 21, housing; 211, mounting hole; 22, magnetic member; 31. First conductive member; 311. First conductive head; 312. First conductive body; 313. Conductive pin; 314. Second conductive head; 315. Second conductive body; 316. Lead section; 317. First section; 32. Support member; 321A. First head; 321B. First body; 321C. Pin section; 321F. Second fixing section; 321G. Avoidance channel; 321H. Rib; 3221. Accommodation space; 3222. Second head; 3223. Second body; 322A. Accommodation groove; 322B. Bottom wall; 322C. Opening; 3224, limiting portion; 322D, limiting rib; 322E, guide surface; 322F, first end; 322G, second end; 3225, clamping portion; 3225A, elastic piece; 3225B, first guide surface; 3225C, limiting bump; 4, connector; 43, second conductive member. 9, displacement sensor; 91, magnetic scale; 92, reader. DETAILED DESCRIPTION

[0034] The following will be combined with the accompanying drawings of some embodiments of the present disclosure to clearly and completely describe the technical solutions in some embodiments of the present disclosure. Obviously, the embodiments described are only some of the embodiments of the present disclosure, not all of them. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0035] 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 such features. Throughout this disclosure, unless otherwise specified, "plurality" means two or more.

[0036] In the description of this specification, features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0037] In the related art, the motor has the problem of low accuracy in position detection.

[0038] To address the aforementioned issues, some embodiments of the present disclosure provide a motor, a suspension system, and a vehicle 1000. Vehicle 1000 can be a pure electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, an extended-range electric vehicle, a gasoline vehicle, etc. Vehicle 1000 can also be a sedan, a van, a bus, a truck, a trailer, etc.

[0039] 1 , a vehicle 1000 includes a body 100 and wheels 200. The body 100 is used for passengers to sit on and carry objects, and the wheels 200 are installed under the body 100 to carry the body 100 and can roll on the road to enable the vehicle 1000 to travel.

[0040] Vehicle 1000 also includes a suspension system 300. Suspension system 300 is provided between vehicle body 100 and wheels 200. It is used to transmit force and torque between vehicle body 100 and wheels 200, and to cushion impact forces applied to vehicle body 100 during travel, thereby improving ride or driving comfort. For example, suspension system 300 may be a dependent suspension system, an independent suspension system, or an active suspension system.

[0041] In some embodiments, the suspension system 300 is an active suspension system, and the stiffness and damping characteristics of the active suspension system can be dynamically adaptively adjusted according to the driving conditions of the vehicle 1000 (such as the motion state of the vehicle 1000 and the road conditions, etc.) so that the suspension system 300 is always in the optimal vibration reduction state.

[0042] Referring to FIG. 2 , a suspension system 300 may include a motor 10, a mounting base 20, and a fork arm 30. One of the mounting base 20 and the fork arm 30 is connected to the vehicle body 100, and the other of the mounting base 20 and the fork arm 30 is connected to the wheel 200. For example, if the fork arm 30 is connected to the vehicle body 100, the mounting base 20 is connected to the wheel 200; or, for another example, if the fork arm 30 is connected to the wheel 200, the mounting base 20 is connected to the vehicle body 100.

[0043] Referring to Figures 2 and 3 , motor 10 includes a first component 1 and a second component 2. The first component 1 and the second component 2 move relative to each other along a first direction (direction X as shown in Figure 3 ). The first component 1 is adapted to be connected to a vehicle body 100, and the second component 2 is adapted to be connected to a wheel 200. A mounting base 20 is coupled to the first component 1. A fork arm 30 is coupled to the second component 2.

[0044] In this way, by the relative movement of the first component 1 and the second component 2, the relative displacement between the fixing seat 20 and the fork arm 30 can be adjusted, thereby adjusting the distance between the vehicle body 100 and the wheel 200, so that the stability of the vehicle body 100 can be ensured when the vehicle 1000 is driving on a rough road or turning, thereby improving the driving comfort of the vehicle 1000.

[0045] It should be noted that the first direction may be the height direction of the vehicle 1000. One of the first component 1 and the second component 2 is a stator component, and the other of the first component 1 and the second component 2 is a mover component. Here, the first component 1 is a stator component, and the second component 2 is a mover component.

[0046] Continuing with Figure 2 , the suspension system 300 further includes a lower support 40 and an elastic element 50. The lower support 40 is connected to the second assembly 2. The elastic element 50 is connected between the lower support 40 and the mounting base 20. When the motor 10 adjusts the relative displacement between the mounting base 20 and the fork arm 30, the elastic element 50 expands and contracts with the relative movement of the mounting base 20 and the fork arm 30, thereby adjusting the cushioning performance of the elastic element 50 to meet the cushioning requirements of the vehicle 1000, thereby further improving the ride comfort of the vehicle 1000.

[0047] In some embodiments, referring to FIG3 , the second component 2 includes a housing 21 . For example, the housing 21 may be a cylindrical structure. The first component 1 includes a core shaft 11 .

[0048] 4 , a portion of the core shaft 11 is disposed within the housing 21, and the core shaft 11 and the housing 21 are slidably connected along the axial direction of the core shaft 11. The axial direction of the core shaft 11 is consistent with the first direction.

[0049] The fixing seat 20 is connected to the core shaft 11. For example, the fixing seat 20 is connected to the portion of the core shaft 11 located outside the housing 21. The fixing seat 20 and the core shaft 11 can be connected by welding, clamping, screwing, etc., or by other components, which are not limited here.

[0050] The fork arm 30 is connected to the housing 21. For example, the fork arm 30 is connected to the end of the housing 21 facing away from the fixing base 20. The fork arm 30 and the housing 21 can be connected by welding, clamping, screwing, etc., or by other components, which are not limited here.

[0051] The relative sliding of the housing 21 and the core shaft 11 can drive the fixing seat 20 and the fork arm 30 to move relative to each other, thereby adjusting the relative displacement between the fixing seat 20 and the fork arm 30 and further adjusting the distance between the vehicle body 100 and the wheel 200 .

[0052] In some examples, the lower support 40 is connected to the housing 21. The elastic element 50 abuts against the lower support 40 and the fixing seat 20, respectively. Specifically, the elastic element 50 is in a compressed state when clamped between the lower support 40 and the fixing seat 20. For example, the elastic element 50 may include multiple elastic columns made of an elastic material such as rubber or latex. In this case, the multiple elastic columns are spaced apart along the circumference of the core shaft 11. Alternatively, the elastic element 50 may be a spring, which is sleeved on the outside of the housing 21.

[0053] In some embodiments, referring to FIG5 , in order to facilitate relative sliding between the housing 21 and the core shaft 11, the second component 2 of the motor 10 includes a housing 21 and a magnetic member 22. The first component 1 includes the core shaft 11 and the winding 12. The winding 12 is provided on the core shaft 11. The magnetic member 22 is fixed to the housing 21. For example, the magnetic member 22 is provided on the inner circumference of the housing 21, such as the magnetic member 22 can be bonded to the inner circumference of the housing 21 by glue, or the magnetic member 22 is plugged into the inner circumference of the housing. The magnetic member 22 is located between the housing 21 and the winding 12.

[0054] In some embodiments, the magnetic member 22 may also be detachably connected to the housing 21. For example, the magnetic member 22 is detachably connected to the inner circumference of the housing 21, such as by screw connection, plug-in connection, etc.

[0055] 3 to 5 , the housing 21 includes a mounting hole 211 disposed along the axial direction of the core shaft 11. The mounting hole 211 communicates with the interior space of the housing 21. The core shaft 11 is inserted into the mounting hole 211, and the winding 12 is located within the housing 21.

[0056] In some examples, the mandrel 11 includes a first shaft segment 111 and a second shaft segment 112. The first shaft segment 111 is inserted into the mounting hole 211 and is slidably connected to the housing 21. Specifically, a portion of the first shaft segment 111 is located outside the housing 21. The second shaft segment 112 is located inside the housing 21. The winding 12 is connected to the second shaft segment 112. Thus, the winding 12 is located inside the housing 21. The first shaft segment 111 can be connected to the fixing base 20.

[0057] The first component 1 further includes an iron core 121. The iron core 121 is connected to the core shaft 11. For example, the iron core 121 is connected to the second shaft section 112 of the core shaft 11. Coil slots 121A are formed on the iron core 121; the winding 12 is accommodated in the coil slots 121A.

[0058] For example, the core 121 is annular, and the core shaft 11 is inserted into and fixedly connected to the core 121. The outer peripheral wall of the core 121 is provided with a coil slot 121A, and the winding 12 is provided in the coil slot 121A and is wound around the core 121 along the circumference of the core 121.

[0059] In this way, after the winding 12 is energized, a magnetic field will be generated between the winding 12 and the magnetic part 22, and the direction of the Lorentz force of the magnetic field is along the axial direction of the shell 21, so that an interaction force along the axial direction of the shell 21 can be generated between the core shaft 11 and the shell 21, thereby pushing the core shaft 11 and the shell 21 to move relative to each other along the axial direction of the shell 21, and then pushing the core shaft 11 and the shell 21 to move relative to each other, so as to realize the relative movement of the first component 1 and the second component 2.

[0060] For example, the magnetic member 22 may be a permanent magnet, an electromagnet, a coil 122 , or the like.

[0061] For example, the magnetic member 22 is an annular structure. In this case, the core shaft 11, the iron core 121 and the winding 12 are all inserted into the magnetic member 22.

[0062] In some embodiments, there are multiple windings 12 , which are spaced apart along the axial direction of the housing 21 . There are also multiple magnetic members 22 , which are spaced apart along the axial direction of the housing 21 .

[0063] In some embodiments, to facilitate detection of the relative displacement between the first component 1 and the second component 2, and thus to control the distance between the vehicle body 100 and the wheel 200, the motor 10 further includes a displacement sensor 9, as shown in FIG6 . The displacement sensor 9 is used to detect the relative displacement between the first component 1 and the second component 2.

[0064] Displacement sensor 9 includes a magnetic scale 91 and a read head 92. Magnetic scale 91 is mounted on first component 1, and read head 92 is mounted on second component 2. For example, magnetic scale 91 is mounted on spindle 11. Read head 92 is mounted on housing 21. Read head 92 cooperates with magnetic scale 91 to detect the relative displacement of second component 2 and first component 1.

[0065] For example, the read head 92 is a magnetic head. The magnetic scale 91 and the read head 92 form a magnetic induction sensor. The read head 92 is used to read the change in magnetic field intensity on the magnetic scale 91 to detect the relative displacement of the second component 2 and the first component 1.

[0066] In some embodiments, referring to FIG. 4 , the motor 10 further includes a first conductive member (conductive member) 31 . The first conductive member 31 is fixedly connected to the first component 1 . A first end of the first conductive member 31 is adapted to be electrically connected to the motor controller, and a second end of the first conductive member 31 is adapted to be electrically connected to the winding 12 . The motor controller can transmit an electrical signal to the winding 12 via the first conductive member 31 to energize the winding 12 and control the magnitude of the current, thereby generating a magnetic field between the winding 12 and the magnetic member 22 , thereby causing the first component 1 and the second component 2 to move relative to each other.

[0067] In the related art, after the wiring such as enameled wire is connected to the coil, it is led out to the outside through the through hole in the rod. The wiring is not fixed in the hole in the rod. That is, the first conductive member 31 is usually connected between the winding 12 and the motor controller by a swinging wire method. In this way, since the enameled wire is relatively soft, during the relative movement of the second component 2 and the first component 1, the enameled wire will continue to swing, causing the relative position of the enameled wire and the magnetic scale 91 of the displacement sensor 9 to change continuously. Moreover, after the enameled wire is energized, a magnetic field will be generated around the enameled wire, and the magnetic scale 91 of the displacement sensor 9 will also generate a magnetic field. The displacement of the enameled wire relative to the magnetic scale 91 is constantly changing, which will cause the distance between the magnetic field generated by the enameled wire and the magnetic field of the magnetic scale 91 to constantly change. Therefore, the magnetic field generated by the enameled wire will have a greater impact on the magnetic field of the magnetic scale 91, affecting the accuracy of the reader 92 in detecting the magnetic field strength of the magnetic scale 91, and affecting the detection accuracy of the displacement sensor 9.

[0068] To solve the above technical problems, in some embodiments, the magnetic scale 91 is connected to the first component 1, and the first conductive member 31 is fixedly connected to the first component 1. Referring to Figure 9, the first conductive member 31 includes a first section 317. The first section 317 corresponds to the magnetic scale 91.

[0069] The first conductive member 31 and the magnetic scale 91 are spaced apart from each other. For example, the first conductive member 31 and the magnetic scale 91 are spaced apart from each other along the radial direction of the core shaft 11 .

[0070] During the movement of the second component 2 relative to the first component 1 , the distance between the first segment 317 of the first conductive member 31 and the magnetic scale 91 in the second direction does not change. The second direction is perpendicular to the first direction, that is, the second direction is the axial direction of the core shaft 11 .

[0071] In this way, by connecting the magnetic scale 91 of the displacement sensor 9 to the first component 1 and fixing the first conductive part 31 to the first component 1, the first segment 317 of the first conductive part 31 corresponds to the magnetic scale 91 in the second direction. During the relative movement of the first component 1 and the second component 2, the displacements of the magnetic scale 91 and the first segment 317 of the first conductive part 31 relative to the first component 1 do not change, that is, the distance between the first segment 317 of the first conductive part 31 and the magnetic scale 91 in the second direction does not change, so that after the first conductive part 31 is energized, the distance between the magnetic field generated by the first segment 317 and the magnetic field of the magnetic scale 91 does not change, thereby reducing the influence of the magnetic field generated by the first segment 317 of the first conductive part 31 on the magnetic field of the magnetic scale 91, thereby improving the detection accuracy of the displacement sensor 9.

[0072] In some embodiments, to facilitate securing the first conductive member 31 and reduce positional variation of the first segment 317 of the first conductive member 31 relative to the first assembly 1 and the magnetic scale 91, refer to Figures 4 and 7. Figure 7 is a cross-sectional view of the core shaft 11 of the motor 10 in the suspension system 300 shown in Figure 4. The core shaft 11 defines a first cavity (chamber) 113. At least a portion of the first conductive member 31 is inserted into the first cavity 113.

[0073] In this way, the first conductive part 31 can be limited by the first chamber 113 to prevent the first conductive part 31 from shaking relative to the core shaft 11, thereby preventing the first section 317 of the first conductive part 31 from shaking relative to the magnetic scale 91, so that the radial (in the second direction) distance between the first section 317 of the first conductive part 31 and the magnetic scale 91 remains unchanged.

[0074] Furthermore, by at least partially inserting the first conductive member 31 into the first cavity 113 of the core shaft 11, assembly of the first conductive member 31 is simplified and easy to perform, facilitating overall assembly of the first assembly 1 and subsequent maintenance. Furthermore, this improves space utilization at the core shaft 11, making the first assembly 1 more compact and facilitating a miniaturized design of the motor 10.

[0075] In some embodiments, the first cavity 113 extends along the axial direction of the core shaft 11. The first conductive member 31 is also arranged along the axial direction of the core shaft 11. The first end of the first conductive member 31 in the axial direction is located in the first cavity 113 and extends to the iron core 121 to be electrically connected to the winding 12. The second end of the first conductive member 31 in the axial direction is located outside the first cavity 113 to be electrically connected to the motor controller. Alternatively, the second end of the first conductive member 31 in the axial direction is also located in the first cavity 113, and the second end of the first conductive member 31 in the axial direction is electrically connected to the motor controller by other electrical connection structures.

[0076] In some embodiments, as shown in Figures 4, 8, and 9, the motor 10 further includes a support member 32. A first end of the first conductive member 31 is electrically connected to a motor controller, and a second end of the first conductive member 31 is electrically connected to the winding 12. The first conductive member 31 is configured to deliver current to the winding 12, thereby energizing the winding 12. Energizing the first conductive member 31 generates a magnetic field, thereby affecting the magnetic field of the magnetic scale 91 of the displacement sensor 9.

[0077] The first conductive member 31 is fixedly connected to the support member 32. The support member 32 can be disposed in the first chamber 113. The support member 32 is fixedly connected to the first component 1. By connecting the first conductive member 31 to the support member 32, the support member 32 can support and fix the first conductive member 31 to prevent the first conductive member 31 from shaking relative to the support member 32. In addition, the support member 32 is fixedly connected to the first component 1, and the first conductive member 31 can be fixed to the first component 1 through the support member 32, so that the radial distance between the first conductive member 31 and the magnetic scale 91 does not change, thereby reducing the influence of the magnetic field generated by the first conductive member 31 on the magnetic scale 91.

[0078] In some examples, the first conductive member 31 may be an enameled wire. For example, the first conductive member 31 may include a copper wire and an insulating layer wrapped around the copper wire. In other examples, the first conductive member 31 may also be a conductive metal, for example, a copper busbar.

[0079] In some examples, the support member 32 can be a hard insulating member. For example, the support member 32 can be made of plastic, rubber, or other hard insulating material. The hardness of the hard insulating member is a Rockwell hardness of not less than 50. By using a hard insulating member for the support member 32, the support member 32 can better support and secure the first conductive member 31, thereby further ensuring that the radial distance between the first conductive member 31 and the magnetic scale 91 does not change. Furthermore, the support member 32 can also insulate the first conductive member 31, protecting it and reducing the risk of leakage.

[0080] In some examples, the support member 32 covers at least a portion of the first conductive member 31. For example, the support member 32 covers the entire first conductive member 31. In this case, other conductive structures can extend into the support member 32 to connect the first conductive member 31 to the motor controller, and to connect the first conductive member 31 to the winding 12. For another example, the support member 32 covers the middle portion of the first conductive member 31, so that the two ends of the first conductive member 31 respectively leak out of the support member 32, thereby facilitating the connection between the motor controller and the winding 12. For another example, the support member 32 can also cover the entire first conductive member 31 along the axial direction of the first conductive member 31, and cover a portion of the first conductive member 31 along the circumferential direction of the first conductive member 31.

[0081] By enclosing at least a portion of the first conductive member 31 with the support member 32, the support member 32 can enhance its support and securing effect on the first conductive member 31. This ensures that, after the support member 32 is secured to the first assembly 1, the first conductive member 31 is more stable on the first assembly 1, thereby preventing changes in the radial distance between the first conductive member 31 and the magnetic scale 91. Furthermore, at least a portion of the first conductive member 31 is located within the core shaft 11, providing a good seal for the first conductive member 31. Furthermore, the support member 32 enclosing the first conductive member 31 further enhances its sealing effect, thereby improving the safety of the motor 10.

[0082] In some examples, the support member 32 completely covers the first segment 317 of the first conductive member 31. By completely covering the first segment 317, the support member 32 can better support and insulate the first segment 317, thereby ensuring that the distance between the first segment 317 and the magnetic scale 91 in the second direction remains unchanged, thereby improving the detection accuracy of the displacement sensor 9.

[0083] In some examples, the portion of the support member 32 corresponding to the first segment 317 at least partially abuts against the wall of the first chamber 113. In this way, the support member 32 can be limited by the wall of the first chamber 113 to prevent the support member 32 from shaking, thereby preventing the first segment 317 of the first conductive member 31 from shaking, and ensuring that the distance between the first segment 317 and the magnetic scale 91 in the second direction remains unchanged.

[0084] In other examples, the support member 32 is fixedly connected to the wall of the first chamber 113. For example, the support member 32 is bonded to the wall of the first chamber 113, or the support member 32 is snapped onto the wall of the first chamber 113. In this way, the wall of the first chamber 113 can limit the support member 32 to prevent it from shaking, thereby preventing the first segment 317 of the first conductive member 31 from shaking, thereby ensuring that the distance between the first segment 317 and the magnetic scale 91 in the second direction remains unchanged.

[0085] In some embodiments, referring again to Figures 6 and 9 , the magnetic scale 91 of the displacement sensor 9 is connected to the core shaft 11 and spaced apart from the first segment 317 of the first conductive member 31. For example, the first conductive member 31 is inserted into the first cavity 113, and the magnetic scale 91 of the displacement sensor 9 is located on one side of the first segment 317 of the first conductive member 31 in the radial direction of the core shaft 11.

[0086] By spacing the magnetic scale 91 of the displacement sensor 9 and the first conductive member 31, a certain distance can be created between the magnetic field of the magnetic scale 91 and the magnetic field of the first segment 317 of the first conductive member 31, thereby reducing the influence of the magnetic field generated by the first segment 317 of the first conductive member 31 on the magnetic field of the magnetic scale 91, thereby further improving the detection accuracy of the displacement sensor 9.

[0087] In some embodiments, the minimum radial distance between the first segment 317 of the first conductive member 31 and the magnetic scale 91 is greater than or equal to 25 mm. For example, the minimum radial distance between the first segment 317 of the first conductive member 31 and the magnetic scale 91 can be 25 mm, 30 mm, 35 mm, 40 mm, 45 mm, 50 mm, etc.

[0088] In some examples, there may be one or more first conductive members 31. When there are multiple first conductive members 31, the minimum spacing between the first segment 317 of the first conductive member 31 and the magnetic scale 91 is: the minimum radial distance between the first segment 317 of the first conductive member 31 that is closest to the magnetic scale 91 among the first segments 317 of the multiple first conductive members 31 and the magnetic scale 91.

[0089] In some embodiments, referring to FIG. 6 , a mounting groove 11A is provided on the core shaft 11. Mounting groove 11A is recessed from the outer circumference of the core shaft 11 toward the axis of the core shaft 11, and the magnetic scale 91 is positioned within mounting groove 11A. This allows mounting groove 11A to position the magnetic scale 91 of the displacement sensor 9, ensuring a relatively stable position on the core shaft 11. This further ensures that the distance between the first segment 317 of the first conductive member 31 and the magnetic scale 91 remains constant, thereby improving the detection accuracy of the displacement sensor 9.

[0090] In addition, the mounting groove 11A can also protect the magnetic scale 91 to prevent damage to the magnetic scale 91 , thereby further improving the detection accuracy of the displacement sensor 9 .

[0091] In some examples, the mounting groove 11A and the first cavity 113 are spaced apart from each other along the radial direction of the core shaft 11 .

[0092] In some embodiments, please continue to refer to Figure 6, the first component 1 also includes a plug 13. The plug 13 is provided in the mounting groove 11A and is located on the side of the magnetic scale 91 in the axial direction of the core shaft 11. The plug 13 is used to limit the magnetic scale 91 and to buffer the magnetic scale 91. By providing the plug 13 on the side of the magnetic scale 91 in the axial direction of the core shaft 11, the magnetic scale 91 can be limited in the mounting groove 11A by the plug 13, so that the magnetic scale 91 is more stable in the mounting groove 11A, so as to avoid the magnetic scale 91 from shaking when the first component 1 moves relative to the second component 2, thereby further ensuring that the distance between the first conductive part 31 and the magnetic scale 91 does not change, so as to improve the detection accuracy of the displacement sensor 9.

[0093] In some examples, the plug 13 may be made of a flexible material such as rubber, latex, etc. The plug 13 may be in a block structure, a plate structure, an irregular structure, etc., which is not limited here.

[0094] The plug 13 is made of a flexible material. When the magnetic scale 91 moves relative to the second component 2 along with the first component 1, the plug 13 can also cushion the magnetic scale 91 to prevent the magnetic scale 91 from being damaged by impact, thereby increasing the service life of the magnetic scale 91.

[0095] 10 , in the axial direction of the core shaft 11 , the first conductive member 31 includes a first conductive head 311 , a first conductive body 312 , and a conductive pin 313 . The first conductive head 311 , the first conductive body 312 , and the conductive pin 313 are connected in sequence.

[0096] It should be noted that in some examples, the first segment 317 is configured as at least a portion of the first conductive body 312. For example, the first segment 317 of the first conductive member 31 may be the entire first conductive body 312 or a portion of the first conductive body 312. In other examples, the first segment 317 may be the entire first conductive body 312 and a portion of at least one of the first conductive head 311 and the conductive pin 313. In still other examples, the first segment 317 may be the entire first conductive body 312, the entire first conductive head 311, and the entire conductive pin 313.

[0097] Referring to Figure 11 , the support member 32 can be an injection-molded component. The support member 32 includes a first head portion 321A, a first body portion 321B, and a pin portion 321C. Continuing with Figures 10 and 11 , the first head portion 321A wraps around the periphery of the first conductive contact 311, with portions of the first conductive contact 311 exposed beyond the first head portion 321A. The first body portion 321B completely wraps around the first conductive body 312. The pin portion 321C wraps around the conductive pin 313, with portions of the conductive pin 313 exposed beyond the pin portion 321C for electrical connection to the winding 12.

[0098] In some examples, the first conductive tip 311 of the first conductive member 31 can be exposed from the first head portion 321A of the support member 32, allowing the first conductive member 31 to be electrically connected to the motor controller. Furthermore, the first conductive tip 311 is connected to the motor controller only through the electrical connection point on the first conductive tip 311, while the first conductive tip 311, except for the electrical connection point, is still covered by the first head portion 321A of the support member 32.

[0099] The conductive pins 313 of the first conductive member 31 are exposed from the pin portion 321C of the support member 32, allowing for electrical connection between the first conductive member 31 and the winding 12. Furthermore, the conductive pins 313 are connected to the winding 12 only through the electrical connection points on the conductive pins 313. The remaining portions of the conductive pins 313, excluding the electrical connection points, are covered by the pin portion 321C of the support member 32. Except for the necessary electrical connection points, the remaining portions of the first conductive member 31 are covered by the support member 32. This enhances the insulation protection of the first conductive member 31 and increases the stability of the support member 32 in supporting the first conductive member 31.

[0100] In some examples, the support member 32 is an injection molded part, and the support member 32 can be directly injection molded on the first conductive member 31. That is, the support member 32 and the first conductive member 31 are an integral structure. In this case, the first conductive member 31 may have an insulating layer or may not have an insulating layer.

[0101] In some examples, the first conductive member 31 is arranged axially along the core shaft 11. The first conductive member 31 and the support member 32 both extend axially along the core shaft 11. The first axial end of the support member 32 is a first head portion 321A, and the second axial end is a pin portion 321C. The first axial end of the first conductive member 31 is a first conductive head 311, and the second axial end is a conductive pin 313. The first axial end of the first conductive member 31 extends to the core 121 to electrically connect to the winding 12. The second axial end of the first conductive member 31 is electrically connected to the motor controller.

[0102] In some examples, the first conductive body 312 of the first conductive member 31 is embedded in the first main body portion 321B of the support member 32. The extension direction of the first conductive body 312 is not limited, as long as the two ends of the first conductive body 312 are respectively connected to the first conductive head 311 and the conductive pin 313. When there are multiple first conductive members 31, the first conductive bodies 312 of each first conductive member 31 do not contact or interfere with each other.

[0103] In some examples, please continue to refer to FIG. 7 , the core shaft 11 is provided with a first through hole 11B radially extending therethrough, and the conductive pin 313 is electrically connected to the lead wire of the winding 12 via an electrical connector passing through the first through hole 11B.

[0104] In some embodiments, as shown in Figures 7 and 12 , the first chamber 113 is provided with a plurality of inwardly projecting bosses 113A. The bosses 113A are spaced apart, with a side hole defined between adjacent bosses 113A. At least a portion of the first conductive member 31 is disposed within the side hole to prevent circumferential rotation of the first conductive member 31.

[0105] In some examples, a boss 113A is provided on the inner wall surface of the first chamber 113, and adjacent bosses 113A define a side hole. Part of the first conductive part 31 can be accommodated in the side hole to prevent the first conductive part 31 from rotating circumferentially, thereby improving the assembly stability and structural stability of the first conductive part 31 on the first component 1, thereby ensuring that the radial distance between the first conductive part 31 and the magnetic scale 91 of the displacement sensor 9 does not change.

[0106] In some examples, the conductive pin 313 is disposed in the side hole. Here, the conductive pin 313 can be disposed in the side hole. In this case, the surface of the side hole in the circumferential direction of the core shaft 11 can abut against the surface of the conductive pin 313 in the circumferential direction of the core shaft 11 to limit the circumferential rotation of the first conductive member 31.

[0107] In some examples, the first body portion 321B abuts against a plurality of bosses 113A. For example, the bosses 113A are provided in the first chamber 113 to abut against the support member 32 on the outer circumference of the support member 32. This can also prevent the support member 32 from shaking within the first chamber 113, thereby improving the assembly stability and structural stability of the first conductive member 31 on the first assembly 1, thereby ensuring that the distance between the first conductive member 31 and the magnetic scale 91 of the displacement sensor 9 does not change.

[0108] In some embodiments, referring to Figure 12 , a first fixing portion 113B is provided at the end of the first chamber 113. Referring to Figure 13 , a second fixing portion 321F is provided on the support member 32. The second fixing portion 321F is fixed to the first fixing portion 113B.

[0109] For example, the core shaft 11 has a first fixing portion 113B, and the first fixing portion 113B is located in the first chamber 113 of the core shaft 11. The second fixing portion 321F can be fixedly matched with the first fixing portion 113B. For example, the first fixing portion 113B and the second fixing portion 321F can be connected by screwing, clamping, etc. In this way, the support member 32 can be fixed to the core shaft 11, thereby improving the stability of the connection between the support member 32 and the core shaft 11, so that the first conductive member 31 and the first component 1 are more stably connected, ensuring that the radial distance between the first conductive member 31 and the magnetic scale 91 of the displacement sensor 9 remains unchanged. In addition, the first fixing portion 113B is arranged in the first chamber 113, which does not occupy the external space of the core shaft 11, which is conducive to improving space utilization.

[0110] In some examples, the first fixing portion 113B and the core shaft 11 are integrally formed. For example, the first fixing portion 113B is connected to the inner wall of the first chamber 113. Here, the first end of the first fixing portion 113B can be connected to the inner wall of the first chamber 113, and the second end of the first fixing portion 113B can extend toward the inside of the first chamber 113.

[0111] In addition, the number of the first fixing portions 113B can be plural, for example, the number of the first fixing portions 113B can be two. By setting the number of the first fixing portions 113B to be plural, the mounting firmness of the first conductive member 31 can be improved.

[0112] The first fixing portion 113B and the core shaft 11 are integrally formed, resulting in a high structural strength. This reduces the probability of separation between the first fixing portion 113B and the core shaft 11, thereby increasing the support strength of the first fixing portion 113B on the support member 32, thereby ensuring a more stable connection of the first conductive member 31 to the first assembly 1. Furthermore, by integrally forming the first fixing portion 113B and the core shaft 11, the integration of the core shaft 11 is increased, the number of components of the motor 10 is reduced, and the assembly steps of the components of the motor 10 are simplified, thereby improving the production and assembly efficiency of the motor 10.

[0113] In some examples, the second fixing portion 321F is a fixing hole provided in the first head portion 321A. For example, a hole can be provided in the first fixing portion 113B, and the second fixing portion 321F is located in the first head portion 321A of the support member 32 and is configured as a fixing hole. A fastener can pass through the hole and the fixing hole to securely connect the support member 32 to the core shaft 11.

[0114] In some embodiments, when the support member 32 is mated with the core shaft 11, the first head 321A of the support member 32 is located on the outside of the first fixing portion 113B in the axial direction of the core shaft 11. At this time, the first head 321A of the support member 32 is arranged closer to the end of the core shaft 11 than the first fixing portion 113B, and the fastener is passed through the fixing hole and the hole body in sequence from the end of the core shaft 11 to fix the support member 32 to the core shaft 11.

[0115] In some embodiments, there are two first fixing parts 113B and two second fixing parts 321F, and the two second fixing parts 321F and the two first fixing parts 113B are fixed one by one. Multiple fixing parts (such as two first fixing parts 113B and two second fixing parts 321F) can increase the connection points between the support member 32 and the core shaft 11, thereby enhancing the connection stability and connection strength between the support member 32 and the core shaft 11. The multiple fixing parts here may include at least one first fixing part and at least one second fixing part, or may include two or more first fixing parts or include two or more second fixing parts.

[0116] In some embodiments, referring to FIG. 11 , the first body portion 321B is provided with an escape channel 321G for circumventing the first fixing portion 113B, so as to avoid the first fixing portion 113B when the first conductive member 31 and the support member 32 are inserted into the first cavity 113. It is understood that the first conductive member 31, the support member 32, and the first cavity 113 all extend along the axial direction of the core shaft 11, and the first conductive member 31 and the support member 32 are assembled into the first cavity 113 along the axial direction of the core shaft 11. Since the first fixing portion 113B is provided on the inner wall of the first cavity 113, to prevent the first fixing portion 113B from interfering with the assembly of the first conductive member 31 and the support member 32, the escape channel 321G is provided on the support member 32, so that when the first conductive member 31 and the support member 32 are assembled, the first body portion 321B and the pin portion 321C can extend into the interior of the first cavity 113. In addition, the provision of the avoidance channel 321G can also reduce the weight of the support member 32 , thereby achieving lightweighting of the first component 1 and further lightweighting of the motor 10 .

[0117] In some embodiments, as shown in FIG. 14 , ribs 321H are provided on the outer surface of the support member 32. The provision of the ribs 321H enhances the structural strength of the support member 32, allowing the support member 32 to better support the first conductive member 31 and maintain a constant radial distance between the first conductive member 31 and the magnetic scale 91. Furthermore, the provision of the ribs 321H allows the support member 32 to more closely mate with the inner wall of the first chamber 113, thereby improving the stability of the connection between the support member 32 and the core shaft 11.

[0118] In some examples, the number of the rib 321H may be one or more.

[0119] In some examples, the ribs 321H extend axially of the mandrel 11. In other examples, the ribs 321H extend circumferentially of the mandrel 11. In still other examples, there are multiple ribs 321H, with some of the multiple ribs 321H extending axially of the mandrel 11 and others extending radially of the mandrel 11.

[0120] In some other embodiments, referring to FIG15 , the support member 32 may be a frame. The support member 32 is provided with an accommodation space 3221 . The accommodation space 3221 extends along the axial direction of the core shaft 11 , and at least a portion of the first conductive member 31 is disposed in the accommodation space 3221 .

[0121] By limiting the first conductive member 31 through the accommodating space 3221, the first conductive member 31 can be more stably connected to the support member 32, so that after the support member 32 is connected to the core shaft 11, the first conductive member 31 can be more stably connected to the core shaft 11, so that the radial distance between the first conductive member 31 and the magnetic scale 91 of the displacement sensor 9 does not change.

[0122] In some embodiments, referring to FIG. 15 , the first conductive member 31 includes a second conductive head 314 and a second conductive body 315 in the axial direction of the core shaft 11. The support member 32 includes a second head portion 3222 and a second body portion 3223. The second head portion 3222 encases the second conductive head 314, with a portion of the second conductive head 314 exposed from the second head portion 3222. An accommodating space 3221 is provided in the second body portion 3223, and the second conductive body 315 is disposed within the accommodating space 3221.

[0123] In this way, except for the part that needs to be electrically connected to the motor controller or the winding 12, the first conductive part 31 is fixed and limited by the support part 32, so as to enhance the protection effect of the support part 32 on the first conductive part 31, and enhance the support stability of the support part 32 on the first conductive part 31, thereby ensuring that the radial distance between the first conductive part 31 and the magnetic scale 91 of the displacement sensor 9 does not change.

[0124] It should be noted that, in some examples, the first segment 317 of the first conductive member 31 may be the entire second conductive body 315 or a portion of the second conductive body 315. In other examples, the first segment 317 may be the entire second conductive body 315 and a portion of the second conductive head 314. In still other examples, the first segment 317 may be the entire second conductive body 315 and the entire second conductive head 314.

[0125] In some examples, the second head portion 3222 of the support member 32 is provided with a through-hole communicating with the accommodating space 3221. The second conductive contact 314 of the first conductive member 31 is inserted through the through-hole, with the second conductive contact 314 partially extending outside the through-hole to facilitate connection to a motor controller. The second body portion 3223 can be completely accommodated within the accommodating space 3221, or it can partially extend from the end of the accommodating space 3221 facing away from the second head portion 3222 to connect to the winding 12.

[0126] In some examples, when there are multiple first conductive members 31 , there are also multiple through-holes, with the second conductive head 314 of each first conductive member 31 being disposed in each through-hole. Furthermore, there are also multiple accommodating spaces 3221 , with the second conductive body 315 of each first conductive member 31 being accommodated in each accommodating space 3221 .

[0127] In some examples, both the first conductive member 31 and the support member 32 extend axially along the core shaft 11, and the accommodating space 3221 also extends axially along the core shaft 11. More of the first conductive member 31 can be accommodated in the accommodating space 3221, thereby improving the stability of the first conductive member 31 on the core shaft 11.

[0128] In some examples, the accommodating space 3221 may include an accommodating groove 322A. The accommodating groove 322A extends axially along the core shaft 11. The accommodating groove 322A is recessed radially from the outer surface of the support member 32 along the core shaft 11. In other words, the support member 32 is also a cylindrical structure, and the accommodating groove 322A is provided on the outer circumferential surface of the support member 32, and the accommodating groove 322A extends axially along the support member 32.

[0129] When installing the first conductive member 31 into the support member 32, one end of the first conductive member 31 can be inserted into the receiving groove 322A through the second head portion 3222. The first conductive member 31 can then be continuously pushed into the receiving groove 322A along the axial direction of the core shaft 11. By configuring the receiving space 3221 as the receiving groove 322A, if the second conductive member 315 bends or becomes stuck during its continuous entry into the receiving groove 322A, the second conductive member 315 can be promptly adjusted to ensure smooth installation of the first conductive member 31 into the support member 32.

[0130] In some other examples, the accommodating space 3221 may also be an accommodating hole that extends along the axial direction of the core shaft 11 , and the first conductive member 31 may be inserted into the accommodating hole to limit the first conductive member 31 through the accommodating hole.

[0131] In some embodiments, please continue to refer to Figure 15, the accommodating groove 322A includes a bottom wall surface 322B and an opening 322C arranged along the radial direction of the core shaft 11. The support member 32 also includes a limiting portion 3224. The limiting portion 3224 is provided at the opening 322C, and the second conductive body 315 is located between the limiting portion 3224 and the bottom wall surface 322B. By setting the limiting portion 3224, the second conductive body 315 of the first conductive member 31 can be confined within the accommodating groove 322A to improve the stability of the second conductive body 315 in the accommodating groove 322A, thereby ensuring that the distance between the first conductive member 31 and the magnetic scale 91 of the displacement sensor 9 does not change.

[0132] In some examples, the second conductive body 315 contacts the bottom wall surface 322B of the accommodating groove 322A and contacts the limiting portion 3224, so that the second conductive body 315 is supported and fixed by the bottom wall surface 322B of the accommodating groove 322A and the limiting portion 3224, so that the second conductive body 315 is more stable in the accommodating groove 322A.

[0133] In some examples, please continue to refer to Figure 15, the limiting portion 3224 includes a plurality of limiting ribs 322D spaced apart along the axial direction of the core shaft 11. For example, the limiting ribs 322D can be a plate-like structure, a rod-like structure, or the like.

[0134] By providing a plurality of limiting ribs 322D, the second conductive body 315 can be effectively limited, and the second conductive body 315 can be easily adjusted during the process of installing the first conductive member 31 into the support member 32 .

[0135] In some other examples, the limiting portion 3224 may also be a limiting plate covering the opening 322C.

[0136] In some embodiments, referring to Figures 16 and 17 , the mandrel 11 includes a first shaft segment 111 and a second shaft segment 112. The second shaft segment 112 is disposed within the housing 21 of the second component 2. The winding 12 is disposed within the second shaft segment 112. A portion of the first shaft end is located outside the housing 21 of the second component 2, and a first chamber 113 is disposed within the first shaft segment 111.

[0137] Continuing with Figure 15 , the inner wall surface of the end of the accommodating groove 322A facing the second shaft segment 112 is a guide surface 322E. The guide surface 322E includes a first end 322F and a second end 322G. The second end 322G is located radially outward of the first end 322F relative to the core shaft 11 and is located on the side of the first end 322F facing the second shaft segment 112. In other words, the guide surface 322E is inclined from the inside to the outside along the direction from the first shaft segment 111 toward the second shaft segment 112. Here, "from the inside to the outside" refers to the direction from the axis of the core shaft 11 toward the outer circumference of the core shaft 11.

[0138] Referring to Figure 18 , the first conductive member 31 also includes a lead-out section 316. The lead-out section 316 extends outside the core shaft 11 via a guide surface 322E. The guide surface 322E allows the lead-out section 316 to be led from the receiving groove 322A to the exterior of the support member 32, and further to the exterior of the core shaft 11, thereby facilitating electrical connection between the lead-out section 316 and the winding 12.

[0139] The guide surface 322E is set as an inclined surface. When the lead-out section 316 is led out from the accommodating groove 322A to the outside of the support member 32, the guide surface 322E can guide the lead-out section 316 so that the lead-out section 316 can be led out of the outside of the support member 32 along the guide surface 322E.

[0140] For example, referring to Figures 18, 19, and 20, when installing the first conductive member 31 into the support member 32, refer to Figure 19 and insert the end of the first conductive member 31 where the lead section 316 is located into the second head portion 3222. Refer to Figure 20 and then continuously push the first conductive member 31 in the direction from the second head portion 3222 toward the second body portion 3223, so that the second conductive body 315 of the first conductive member 31 gradually enters the receiving groove 322A.

[0141] Please refer to Figure 18, continue to push the first conductive member 31 along the direction of the second head portion 3222 toward the second main body portion 3223 until the second conductive body 315 of the first conductive member 31 completely enters the accommodating groove 322A, and the lead-out section 316 will extend to the outside of the support member 32 under the guidance of the guide surface 322E to complete the installation of the first conductive member 31 on the support member 32.

[0142] In some examples, the first conductive member 31 extends axially along the core shaft 11, and the second conductive head 314 and the lead section 316 are respectively connected to both ends of the second conductive body 315. For example, the second conductive head 314 is located at the end of the second conductive body 315 facing away from the second shaft section 112, and the lead section 316 is located at the end of the second conductive body 315 facing the second shaft section 112.

[0143] In some examples, as shown in FIG. 21 , the core shaft 11 is provided with a second through-hole 114 extending radially thereof. For example, the second through-hole 114 is provided at one end of the first shaft segment 111 facing the second shaft segment 112 and communicates with the first chamber 113. The second through-hole 114 corresponds to the guide surface 322E. After the lead-out section 316 of the first conductive member 31 is extended to the exterior of the support member 32, it can extend through the second through-hole 114 to the exterior of the core shaft 11 for connection to the winding 12.

[0144] When there are multiple first conductive members 31, the inner wall of each receiving groove 322A is provided with a guide surface 322E, and there are multiple second through holes 114. The lead-out section 316 of a first conductive member 31 extends to the exterior of the core shaft 11 through the guide surface 322E and a second through hole 114.

[0145] In some embodiments, referring to Figure 15 , the support member 32 further includes a snap-fit ​​portion 3225. The snap-fit ​​portion 3225 is connected to the end of the second body portion 3223 facing the second shaft segment 112. Referring to Figures 22 and 23 , the end of the second shaft segment 112 facing the first shaft segment 111 defines a snap-fit ​​hole 115.

[0146] Referring to Figure 24 , the engaging portion 3225 engages with the engaging hole 115. By engaging the engaging portion 3225 with the engaging hole 115, the connection between the support member 32 and the core shaft 11 can be facilitated, and the connection of the support member 32 to the core shaft 11 can be made more stable, thereby ensuring that the radial distance between the first conductive member 31 and the magnetic scale 91 of the displacement sensor 9 does not change.

[0147] In some examples, referring to FIG25 , the clamping portion 3225 includes a plurality of elastic pieces 3225A disposed along the circumference of the core shaft 11. Thus, after the clamping portion 3225 is clamped into the clamping hole 115, the elastic action of the plurality of elastic pieces 3225A causes the plurality of elastic pieces 3225A to abut against the inner circumferential surface of the clamping hole 115, thereby improving the stability of the connection between the clamping portion 3225 and the clamping hole 115.

[0148] In some examples, referring again to FIG. 25 , a first guide surface 3225B is provided on the outer surface of the elastic piece 3225A at the end facing away from the second body portion 3223. As the second shaft segment 112 moves toward the first shaft segment 111, the distance between the first guide surface 3225B and the axis of the engaging hole 115 gradually increases. The provision of the first guide surface 3225B guides the engaging portion 3225 during engagement with the engaging hole 115, ensuring smooth and convenient entry of the engaging portion 3225 into the engaging hole 115.

[0149] Continuing with Figure 24 , the inner wall of the engaging hole 115, facing away from the second shaft segment 112, forms a second guide surface 115A. As the second shaft segment 112 moves toward the first shaft segment 111, the distance between the second guide surface 115A and the axis of the engaging hole 115 gradually increases. The provision of the second guide surface 115A guides the engaging portion 3225 during engagement with the engaging hole 115, ensuring smooth and convenient entry of the engaging portion 3225 into the engaging hole 115.

[0150] In some examples, referring to Figure 25 , a stopper protrusion 3225C is provided on the outer surface of the elastic piece 3225A, facing away from the second body portion 3223. A guide surface 322E is provided on the stopper protrusion 3225C. Referring to Figure 23 , the second shaft segment 112 defines a second cavity 112A. This cavity 112A is used to accommodate a guide rod of the second component 2, allowing the guide rod to slide within this cavity 112A, thereby improving the relative sliding stability between the second component 2 and the first component 1. The engaging hole 115 connects the first cavity 113 and the second cavity 112A.

[0151] Please continue to refer to Figure 24. After the clamping portion 3225 is clamped into the clamping hole 115, the limiting protrusion 3225C will pass through the clamping hole 115 and enter the second chamber 112A, and the surface of the limiting protrusion 3225C facing the first shaft section 111 can contact the inner wall surface of the second chamber 112A facing the first chamber 113, thereby further limiting the clamping portion 3225 to further improve the stability of the connection between the clamping portion 3225 and the clamping hole 115.

[0152] In some embodiments, the second head portion 3222 of the support member 32 is connected to the end of the second body portion 3223 facing away from the second shaft segment 112, and the second head portion 3222 is connected to the core shaft 11. By having the second head portion 3222 located at the end of the second body portion 3223 facing away from the second shaft segment 112 and connected to the core shaft 11, the end of the support member 32 facing away from the second shaft segment 112 can also be connected to the core shaft 11. In addition, the end of the support member 32 facing the second shaft segment 112 is engaged with the engaging hole 115 via the engaging portion 3225, so that both ends of the support member 32 can be connected to the core shaft 11 respectively, thereby further improving the stability of the connection between the support member 32 and the core shaft 11 and ensuring that the radial distance between the first conductive member 31 and the magnetic scale 91 of the displacement sensor 9 does not change. In some examples, the second head portion 3222 can be engaged in the first chamber 113, or can be connected by other means such as screwing or bonding.

[0153] In some embodiments, referring to FIG. 3 , the suspension system 300 further includes a second conductive member 43. The second end of the first conductive member 31 is connected to the first end of the second conductive member 43, and the second end of the second conductive member 43 is connected to the motor controller. During the movement of the vehicle 1000, the distance of the second conductive member 43 relative to the vehicle body 100 fluctuates. The fluctuation in the distance of the second conductive member 43 means that it is not completely fixed and may move slightly, such as by shaking. For example, the second conductive member 43 may be a flexible cable, which may contain a conductive wire, such as a plurality of copper or aluminum wires, and the outer periphery of the conductive wire includes an insulating sleeve, which may be made of rubber.

[0154] In this way, the motor 10 and the motor controller can be set as two independent components. By changing the distance of the second conductive member 43 relative to the vehicle body 100 during the movement of the vehicle 1000, the second conductive member 43 can move accordingly when the vehicle rotates or vibrates, bumps, shakes, etc., thereby avoiding damage to the second conductive member 43 caused by the motor 10 and the motor controller pulling each other, thereby ensuring that the motor controller can smoothly transmit current to the motor 10, thereby improving the safety of the suspension system 3000.

[0155] In some examples, the second conductive member 43 may be a flexible conductor. For example, the second conductive member 43 may be an enameled wire. The flexible conductor may also be a flexible cable having an inner conductor and an outer insulating sheath. The insulating sheath may be made of an insulating material such as rubber or polyvinyl chloride. The inner conductor may be a copper wire or an aluminum wire, and the inner conductor may be a single strand or multiple strands. An example of a flexible conductor may be a polyvinyl chloride insulated flexible cable, such as a copper-core polyvinyl chloride insulated connecting flexible cable, which comprises a conductor core formed by twisting multiple strands of soft copper wire and is coated with a polyvinyl chloride (PVC) insulation layer and / or a polyvinyl chloride sheath. Due to the large number of types of flexible conductors, this disclosure does not list them all.

[0156] In some examples, the motor further includes a connector 4. The connector 4 is fixed to the support member 32, and the first conductive head 311 is connected to the first end of the second conductive member 43 via the connector. For example, the connector 4 is disposed at one axial end of the core shaft 11, for example, at the end of the first shaft segment 111 facing away from the second shaft segment 112.

[0157] The connector 4 is fixedly connected to the first conductive member 31, further supporting the first conductive member 31 to ensure that the distance between the first conductive member 31 and the vehicle body 100 does not change with the movement of the vehicle 1000. Furthermore, the connector 4 can also secure the first end of the second conductive member 43 to improve the stability of the connection between the second conductive member 43 and the first conductive member 31.

[0158] In addition, the second conductive member 43 uses a soft wire, which can reduce damage to the second conductive member 43 and ensure the stability of the connection between the second conductive member 43 and the first conductive member 31 when the vehicle 1000 rotates or the vehicle vibrates, bumps, shakes, etc.

[0159] The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A motor (10), comprising: A first component (1), the first component (1) comprising a winding (12); A second component (2), wherein the second component (2) and the first component (1) move relative to each other along a first direction; A displacement sensor (9), the displacement sensor (9) comprising a magnetic scale (91) and a reading head (92), the magnetic scale (91) being provided on the first component (1), the reading head (92) being provided on the second component (2), the reading head (92) cooperating with the magnetic scale (91) to detect the relative displacement between the second component (2) and the first component (1); as well as A conductive member (31), wherein a first end of the conductive member (31) is adapted to be electrically connected to a motor controller, and a second end of the conductive member (31) is electrically connected to the winding (12); The conductive member (31) is connected to the first component (1), and the conductive member (31) includes a first section (317), and the first section (317) corresponds to the magnetic scale (91) in a second direction; Wherein, during the movement of the second component (2) relative to the first component (1), the distance of the first section (317) relative to the magnetic scale (91) in the second direction does not change, and the second direction is perpendicular to the first direction.

2. The electric machine (10) according to claim 1, wherein The minimum distance between the first section (317) and the magnetic scale (91) in the second direction is not less than 25 mm.

3. The electric machine (10) according to claim 1 or 2, wherein: The first component (1) further comprises a core shaft (11), the winding (12) is connected to the core shaft (11), a chamber (113) is provided in the core shaft (11), and the conductive member (31) is provided in the chamber (113).

4. The electric machine (10) according to claim 3, wherein The core shaft (11) is provided with a mounting groove (11A), the mounting groove (11A) is recessed from the outer peripheral surface of the core shaft (11) toward the axial direction of the core shaft (11), and the magnetic scale (91) is arranged in the mounting groove (11A).

5. The electric machine (10) according to claim 4, wherein The first component (1) further includes a plug (13), which is arranged in the mounting groove (11A) and is located on one side of the magnetic scale (91) in the axial direction of the core shaft (11).

6. The electric machine (10) according to any one of claims 3 to 5, further comprising: a support member (32), the first section (317) being connected to the support member (32), and the support member (32) being connected to the first component (1); Wherein, the support member (32) is an insulating member.

7. The electric machine (10) according to claim 6, wherein The support member (32) completely covers the first section (317).

8. The electric machine (10) according to claim 7, wherein Both ends of the support member (32) in the first direction protrude from or are flush with the first section (317).

9. The electric machine (10) according to claim 7 or 8, wherein: The portion of the support member (32) corresponding to the first section (317) at least partially abuts against the cavity wall of the chamber (113) or is connected to the cavity wall of the chamber (113).

10. The electric machine (10) according to any one of claims 6 to 9, wherein: In the axial direction of the core shaft (11), the conductive member (31) includes a first conductive head (311), a first conductive body (312) and a conductive pin (313), and the first section (317) is configured as at least a part of the first conductive body (312); The support member (32) includes a first head portion (321A), a first body portion (321B) and a pin portion (321C), wherein the first head portion (321A) wraps around the periphery of the first conductive head (311), and a portion of the first conductive head (311) is exposed at the first head portion (321A), the first body portion (321B) completely wraps around the first conductive body (312), and the pin portion (321C) wraps around the conductive pin (313), and a portion of the conductive pin (313) is exposed at the pin portion (321C) to be electrically connected to the winding (12).

11. The electric machine (10) according to any one of claims 6 to 9, wherein: An accommodating space (3221) is provided on the support member (32), the accommodating space (3221) extends along the axial direction of the core shaft (11), and at least a portion of the conductive member (31) is disposed in the accommodating space (3221).

12. The electric machine (10) according to claim 11, wherein In the axial direction of the core shaft (11), the conductive member (31) includes a second conductive head (314) and a second conductive body (315); The support member (32) includes a second head portion (3222) and a second body portion (3223), wherein the second head portion (3222) wraps the second conductive head (314), and a portion of the second conductive head (314) is exposed at the second head portion (3222); the accommodating space (3221) is provided at the second body portion (3223), and the second conductive body (315) is provided at the accommodating space (3221).

13. The electric machine (10) according to claim 12, wherein The accommodating space (3221) comprises an accommodating groove (322A), and the accommodating groove (322A) is recessed from the outer surface of the support member (32) along the radial direction of the core shaft (11).

14. The electric machine (10) according to claim 13, wherein The accommodating groove (322A) comprises a bottom wall surface (322B) and an opening (322C) arranged along the radial direction of the core shaft (11); The support member (32) further includes a limiting portion (3224), the limiting portion (3224) being provided at the opening (322C), and the second conductive body (315) being located between the limiting portion (3224) and the bottom wall surface (322B).

15. The electric machine (10) according to claim 14, wherein The limiting portion (3224) includes a plurality of limiting ribs (322D) arranged at intervals along the axial direction of the core shaft (11).

16. The electric machine (10) according to any one of claims 13 to 15, wherein: The core shaft (11) comprises a first shaft section (111) and a second shaft section (112); the chamber (113) is provided in the first shaft section (111); and the winding (12) is provided in the second shaft section (112); The inner wall surface of one end of the accommodating groove (322A) facing the second shaft segment (112) includes a guide surface (322E), and the guide surface (322E) includes a first end (322F) and a second end (322G), and the second end (322G) is located outside the first end (322F) in the radial direction of the core shaft (11), and is located on the side of the first end (322F) facing the second shaft segment (112); The conductive member (31) further includes a lead-out section (316), and the lead-out section (316) is led out to the outside of the core shaft (11) through the guide surface (322E).

17. The electric machine (10) according to claim 16, wherein The support member (32) further includes a clamping portion (3225), and the clamping portion (3225) is connected to one end of the second body portion (3223) facing the second shaft segment (112); A clamping hole (115) is provided at one end of the second shaft segment (112) facing the first shaft segment (111), and the clamping portion (3225) is clamped in the clamping hole (115).

18. The electric machine (10) according to claim 16 or 17, wherein The second head portion (3222) is connected to one end of the second body portion (3223) facing away from the second shaft segment (112), and the second head portion (3222) is connected to the core shaft (11).

19. The electric machine (10) according to any one of claims 3 to 18, wherein: The second component (2) comprises: a housing (21), wherein a portion of the core shaft (11) is disposed within the housing (21), and the core shaft (11) and the housing (21) are slidably connected along the axial direction of the core shaft (11); and A magnetic component (22) is provided between the housing (21) and the winding (12), and is provided on the housing (21).

20. A suspension system (300), comprising: The electric machine (10) according to any one of claims 1 to 19; a fixing seat (20), the fixing seat (20) being connected to the first component (1); and A fork arm (30), the fork arm (30) being connected to the second component (2).

21. A vehicle (1000), comprising: The suspension system (300) according to claim 20; A vehicle body (100), wherein one of the fixing seat (20) and the fork arm (30) is connected to the vehicle body (100); as well as A wheel (200), the other of the fixing seat (20) and the fork arm (30) is connected to the wheel (200).

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