Linear motor, damper, suspension system, and vehicle

Abstract

This application relates to a linear motor, a shock absorber, a suspension system, and a vehicle. The linear motor includes a stator assembly, a mover assembly, a sensor, and sensor wires. The stator assembly has a wire-passing structure. The mover assembly is slidably fitted to the stator assembly. The sensor is connected to the stator assembly and configured to collect data information from the linear motor. One end of the sensor wire is connected to the sensor, and the other end passes through the wire-passing structure and exits the linear motor. By arranging the sensor and sensor wires on the stator assembly, this application allows for the collection of data information from the linear motor while keeping the sensor wires stationary relative to the vehicle body, preventing them from moving up and down with the tires. This reduces vibration of the sensor wires caused by road bumps, ensuring the robustness of the connection at both ends of the sensor wires, improving the stability of data transmission, and ultimately enhancing the reliability of the linear motor.

Description

Technical Field

[0001] This application relates to the field of automotive technology, and more particularly to a linear motor, a shock absorber, a suspension system, and a vehicle. Background Technology

[0002] Based on whether the trajectory of the moving parts is linear or rotary when converting electrical energy into mechanical energy, motors can be divided into linear motors and rotary motors. Linear motors can directly provide linear thrust to the load without any mechanical conversion device, and they are characterized by fast dynamic response and high reliability.

[0003] In related technologies, linear motors, which convert electrical energy into linear motion mechanical energy, are applied to shock absorbers in vehicle suspension systems. The linear motor actively actuates, providing the damping force needed to buffer road surface excitation, thus offering passengers a smoother and more comfortable ride. In certain special scenarios, the linear motor can adjust the vehicle's posture in real time to adapt to more severe road conditions. Therefore, corresponding sensors are needed to capture real-time data on the linear motor's current state (including but not limited to position, damping force value, and speed) to adjust the suspension system accordingly. Since a linear motor consists of a relatively moving linear motor and a mover assembly, the problem this application aims to solve is how to configure sensors that both ensure the overall reliability of the linear motor and effectively collect its data. Utility Model Content

[0004] This application provides a linear motor that can improve the reliability of the motor, thereby at least solving the above-mentioned technical problems.

[0005] To achieve the above objectives, according to a first aspect of this application, a linear motor is provided, the linear motor including a stator assembly, a mover assembly, a sensor and a sensor wire; the stator assembly has a wire-passing structure; the mover assembly is slidably engaged with the stator assembly; the sensor is connected to the stator assembly and is configured to collect data information of the linear motor; one end of the sensor wire is connected to the sensor, and the other end passes through the wire-passing structure out of the linear motor.

[0006] Alternatively, the end of the threaded structure away from the sensor extends through one side of the outer peripheral surface of the stator assembly.

[0007] Optionally, the part of the sensor wire located in the wire-threading structure is the first segment, which extends along the axial direction of the linear motor, and the part of the sensor wire that passes through the wire-threading structure is the second segment, with the included angle A between the first segment and the second segment being an obtuse angle.

[0008] Optionally, the included angle A satisfies: 100°≤A≤180°.

[0009] Optionally, the stator assembly includes a stator shaft and a lead wire component. The stator shaft is provided with a mounting through hole. The sensor portion is located at one end inside the mounting through hole, and the lead wire component portion is located at the other end inside the mounting through hole. A wire threading structure is provided on the lead wire component, with one end of the wire threading structure facing the sensor and the other end located at the part of the lead wire component outside the mounting through hole.

[0010] Optionally, a protrusion is provided on the wall of the mounting through hole, and at least one of the end of the cable outlet near the sensor and the end of the sensor near the cable outlet abuts against the protrusion. And / or, the stator assembly also includes a stator winding and a power supply assembly, the stator winding being disposed on the stator shaft, the power supply assembly including a fastener and a conductor, the conductor being disposed through a lead-out member, one end of the conductor being connected to the stator winding, and the fastener being connected to the other end of the conductor, the fastener being configured to connect the conductor to an external conductor.

[0011] Optionally, the wire threading structure is a hole, and the linear motor also includes a wire outlet tube, which is sleeved on the part of the sensor wire located inside the wire threading structure; And / or, the linear motor further includes a first seal disposed at the end of the wire-threading structure away from the sensor to seal the mating portion between the wire-threading structure and the sensor wire.

[0012] According to a second aspect of this application, a vibration damper is provided, which includes the aforementioned linear motor.

[0013] According to a third aspect of this application, a suspension system is provided, which includes the aforementioned shock absorber.

[0014] According to a fourth aspect of this application, a vehicle is provided that includes the aforementioned suspension system.

[0015] In the linear motor of this application embodiment, by arranging the sensor and sensor wire on the stator assembly, the sensor can collect data information of the linear motor, while the sensor wire remains stationary relative to the vehicle body and does not move up and down with the tires. This reduces vibration of the sensor wire caused by road bumps, which helps to ensure the firmness of the connection at both ends of the sensor wire, improves the stability of data transmission, and thus improves the reliability of the linear motor.

[0016] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0018] Figure 1 This is a schematic diagram of the structure of the linear motor provided in an exemplary embodiment of this application; Figure 2 It is along Figure 1 Sectional view of AA; Figure 3 yes Figure 2 A magnified structural diagram of part B in the middle section; Figure 4 yes Figure 2 A magnified structural diagram of section C; Figure 5 yes Figure 3 An enlarged schematic diagram of section D in the middle; Figure 6 This is the structural frame of the vibration damper provided in the exemplary embodiments of this application; Figure 7 This is the structural frame of the suspension system provided in the exemplary embodiments of this application; Figure 8 This is the structural frame of the vehicle provided in the exemplary embodiments of this application.

[0019] Explanation of reference numerals in the attached figures: 1000 - Vehicles; 100 - Suspension system; 101 - Shock absorber; 102 - Linear motor; 10-Stator assembly; 11-Wire threading structure; 12-Stator shaft; 121-Mounting through hole; 122-Protrusion; 13-Stator winding; 14-Outlet component; 141-First hole; 142-Second hole; 143-Mounting hole; 144-Limiting ring; 20-Motor assembly; 21-Housing; 22-Permanent magnet; 23-Guide rod; 24-Flange end plate; 25-Bolt; 26-Fork arm; 30 - Sensor; 31 - Sensor wire; 311 - First segment; 312 - Second segment; 40 - Power supply component; 41 - Fastener; 42 - Conductor; 421 - Conductive post; 422 - Conductive strip; 51-Mounting groove; 52-Sealing ring; 53-Outlet conduit; 54-First seal; 541-Annular groove; 542-Conical surface; 55 - Sliding bearing. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0021] The following combination Figures 1 to 8 The present application provides a detailed description of a linear motor 102, a shock absorber 101, a suspension system 100, and a vehicle 1000, as provided in the embodiments of this application.

[0022] Please see Figure 1 and Figure 2 In a first aspect, embodiments of this application provide a linear motor 102. The linear motor 102 includes a stator assembly 10, a mover assembly 20, a sensor 30, and a sensor wire 31. The stator assembly 10 has a threading structure 11. The mover assembly 20 is slidably engaged with the stator assembly 10. The sensor 30 is connected to the stator assembly 10. The sensor 30 is configured to collect data information from the linear motor 102. One end of the sensor wire 31 is connected to the sensor 30, and the other end passes through the threading structure 11 and exits the linear motor 102.

[0023] The wire threading structure 11 can be a groove on the surface of the stator assembly 10 or a hole inside the stator assembly 10. The wire threading structure 11 can also be a combination structure in which part of it is a groove on the surface of the stator assembly 10 and the other part is a hole inside the stator assembly 10.

[0024] For example, the wire threading structure 11 is a hole provided inside the stator assembly 10, and at least part of the hole is coaxially arranged with the stator assembly 10 to improve the structural symmetry of the linear motor 102 and improve the stress state of the linear motor 102.

[0025] It is understandable that in the linear motor 102, the sliding engagement between the mover assembly 20 and the stator assembly 10 can be such that one end of the mover assembly 20 extends into the stator assembly 10 and moves relative to the stator assembly 10 along the axial direction of the linear motor 102; or one end of the mover assembly 20 is sleeved outside the stator assembly 10 and moves relative to the stator assembly 10 along the axial direction of the linear motor 102. To improve the smoothness of the relative sliding between the stator assembly 10 and the mover assembly 20, a sliding bearing 55 can be provided between them to guide the relative sliding and reduce wear.

[0026] Specifically, the stator assembly 10 of the linear motor 102 includes a stator shaft 12 and a stator winding 13 wound on the stator shaft 12. The stator winding 13 can be snapped onto the stator shaft 12, or the stator winding 13 and stator shaft 12 can be assembled together and then potted with adhesive. After potting, the stator shaft 12 and stator winding 13 form a single unit.

[0027] Specifically, the stator winding 13 is an excitation winding, which can generate an excitation magnetic field through an external three-phase alternating current, so as to interact with the own magnetic field of the permanent magnet 22 of the linear motor 102, thereby generating the axial force output by the linear motor 102.

[0028] Correspondingly, the mover assembly 20 includes a housing 21 and a permanent magnet 22 (e.g., a magnet) fixed to the inner wall of the housing 21. Both the housing 21 and the permanent magnet 22 are cylindrical structures open at both ends. The outer peripheral surface of the permanent magnet 22 is attached to the inner wall surface of the housing 21, and the permanent magnet 22 provides the required magnetic field environment for the linear motor 102. The housing 21 can be glued to the permanent magnet 22 to form a single unit. The stator shaft 12 slides along the axial direction of the linear motor 102 with the housing 21 via a sliding bearing 55. The permanent magnet 22 is sleeved on the stator assembly 10 and encloses the stator winding 13. The permanent magnet 22 and the stator winding 13 are clearance-fitted to define an air gap between their opposing surfaces. The axial length of the permanent magnet 22 is greater than the axial length of the stator winding 13. The excitation magnetic field of the permanent magnet 22 interacts with the excitation magnetic field generated by the energization of the stator winding 13 to convert electrical energy into linear mechanical energy that causes the mover assembly 20 to move axially relative to the stator assembly 10.

[0029] For example, the housing 21 is made of aluminum-based material, which gives the housing 21 a certain strength, low density, and light weight. At the same time, the housing 21 provides a mounting position for the permanent magnet 22 and isolates the linear motor from the internal and external magnetic fields, thereby reducing the interference of the magnetic field of the environment in which the linear motor 102 is located on the internal magnetic field of the linear motor 102.

[0030] The permanent magnet 22 is magnetized through a magnetization process to form the magnetic field distribution required for the movement of the linear motor 102, thereby providing a basic environment for the function of the linear motor 102.

[0031] It is understood that the mover assembly 20 may also include a guide rod 23. One end of the guide rod 23 extends into the mounting through hole 121 of the stator shaft 12 and slides against the wall of the mounting through hole 121 of the stator shaft 12 via a sliding bearing 55. A flange end plate 24 is provided at the end of the guide rod 23 away from the stator shaft 12, and the flange end plate 24 is located at the end of the housing 21 away from the stator assembly 10. The shank end of the bolt 25 passes through the flange end plate 24 and connects to the housing 21, thereby fixing the guide rod 23 to the housing 21. The guide rod 23 provides guidance for the axial movement of the mover assembly 20 relative to the stator assembly 10 to ensure the direction of the linear movement of the mover assembly 20, thereby improving the accuracy of the displacement of the mover assembly 20 relative to the stator assembly 10.

[0032] For example, the guide rod 23 uses a high-rigidity material to ensure the motion accuracy of the linear motor 102 and to provide good guidance for the axial movement of the mover assembly 20 relative to the stator assembly 10.

[0033] A fork arm 26 is provided on the side of the flange end plate 24 opposite to the stator assembly 10. The end of the bolt 25 passes through the fork arm 26 and the flange end plate 24 in sequence and connects to the housing 21, thereby connecting the fork arm 26, the guide rod 23, and the housing 21 into one unit. The end of the fork arm 26 away from the housing 21 is connected to the lower control arm of the suspension system 100 of the vehicle 1000 by bolt 25. Correspondingly, the end of the stator shaft 12 away from the stator winding 13 is connected to the body of the vehicle 1000. In this way, the linear motor 102 can output force between the lower control arm of the suspension system 100 and the body to adjust the suspension angle and thus control the body posture.

[0034] For example, the fork arm 26 uses an aluminum-based material. This allows the fork arm 26 to be lightweight while maintaining strength, thus meeting the lightweight requirements of the entire vehicle suspension while ensuring strength.

[0035] It is understood that the sensor wire 31 transmits the data information collected by the sensor 30 to the control system of the vehicle 1000, and can also transmit electrical energy from the power supply to the sensor 30. The data information collected by the sensor 30 from the linear motor 102 includes, but is not limited to, the position information of the mover assembly 20, the damping force value of the linear motor 102, and the movement speed of the mover assembly 20. Depending on the type of data to be collected, the sensor 30 can be installed in a corresponding position. For example, the sensor 30 may be a position sensor using an eddy current scheme. Specifically, the sensor 30 is positioned between the stator assembly 10 and the mover assembly 20, with a portion of the sensor 30 mounted on the stator shaft 12 and the other portion inserted into the mounting hole 143 on the guide rod 23, and clearance-fitted with the guide rod 23.

[0036] Understandably, to improve the reliability of the linear motor 102, the mating parts between the sensor wire 31 and the wiring structure 11 can be sealed. For example, a sealant can be provided between the sensor wire 31 and the wiring structure 11, sealant can be filled between the sensor wire 31 and the wiring structure 11, or the sensor wire 31 and the wiring structure 11 can be press-fitted. In this way, the linear motor 102 is divided into two environments, improving its waterproof and dustproof performance.

[0037] In this embodiment, by arranging the sensor 30 and sensor wire 31 on the stator assembly 10, the sensor 30 can collect data information of the linear motor 102, while the sensor wire 31 remains stationary relative to the vehicle body and does not move up and down with the tires. This reduces the vibration of the sensor wire 31 caused by road bumps, which helps to ensure the firmness of the connection at both ends of the sensor wire 31, improves the stability of data transmission, and thus improves the reliability of the linear motor 102.

[0038] Please see Figure 2 In some embodiments, the end of the wiring structure 11 away from the sensor 30 passes through one side of the outer peripheral surface of the stator assembly 10. This allows the sensor wire 31 to exit from the side of the stator assembly 10, preventing the arrangement of the sensor wire 31 from affecting the connection between the linear motor 102 and the vehicle body. Please see Figure 3 In some embodiments, the portion of the sensor wire 31 located within the threading structure 11 is designated as a first segment 311. The first segment 311 extends axially along the linear motor 102. The portion of the sensor wire 31 that exits the threading structure 11 is designated as a second segment 312. The angle A between the first segment 311 and the second segment 312 is an obtuse angle. This allows for control over the degree of bending of the sensor wire 31, preventing excessive bending that could damage the sensor wire 31, thereby ensuring the electrical performance stability, mechanical structural reliability, and long service life of the sensor wire 31.

[0039] The first segment 311 is coaxially arranged with the linear motor 102.

[0040] In some embodiments, the included angle A satisfies: 100°≤A≤180°. This reduces the degree of bending of the sensor wire 31 and avoids damage to the sensor wire 31 due to excessive bending.

[0041] It is understood that the included angle A includes, but is not limited to, 100°, 101°, 103°, 104°, 106°, 109°, 112°, 115°, 118°, 121°, 124°, 127°, 130°, 133°, 136°, 139°, 142°, 145°, 148°, 151°, 154°, 157°, 160°, 163°, 166°, 169°, 172°, 175°, 178°, and 180°.

[0042] Specifically, 110°≤A≤150°.

[0043] Please see Figure 2 and Figure 3 In some embodiments, the stator assembly 10 includes a stator shaft 12 and a lead-out member 14. The stator shaft 12 has a mounting through-hole 121. A portion of the sensor 30 is located inside one end of the mounting through-hole 121. A portion of the lead-out member 14 is located inside the other end of the mounting through-hole 121. A wire-passing structure 11 is provided on the lead-out member 14. One end of the wire-passing structure 11 faces the sensor 30, and the other end is located on the lead-out member 14 outside the mounting through-hole 121. This allows the stator shaft 12 and the lead-out member 14 to be machined separately, reducing manufacturing difficulty and improving manufacturing efficiency. Alternatively, suitable materials can be selected for the stator shaft 12 and the lead-out member 14 as needed to improve the overall performance of the linear motor 102.

[0044] For example, the stator shaft 12 is made of high-strength steel, and its surface is ground and polished to make the surface of the stator shaft 12 smooth. In this way, the rigidity of the stator shaft 12 of the linear motor 102 can be guaranteed, the motion resistance of the linear motor 102 can be reduced, and the fatigue resistance and wear resistance of the linear motor 102 can be improved.

[0045] For example, the lead-out component 14 is made of an insulating material. For instance, the lead-out component 14 uses a composite material of PA66 (i.e., polyhexamethylene adipamide) and glass fiber. This material has good insulation and high strength, thus ensuring stable signal transmission from the sensor 30.

[0046] For example, the stator shaft 12 and the lead-out member 14 are interference-fitted. Specifically, after the stator shaft 12 and the lead-out member 14 are assembled, they are glued together so that the stator shaft 12 is also glued to the lead-out member 14.

[0047] Specifically, part of the hole wall of the mounting through hole 121 is fitted with the cable outlet 14, while another part of the hole wall is spaced apart from the cable outlet 14. This not only achieves the positioning and coordination between the stator shaft 12 and the cable outlet 14, but also facilitates the lightweight design of the stator shaft 12.

[0048] Please see Figure 4In some embodiments, a protrusion 122 is provided on the wall of the mounting through hole 121. At least one of the end of the cable outlet 14 near the sensor 30 and the end of the sensor 30 near the cable outlet 14 abuts against the protrusion 122.

[0049] Specifically, the end of the lead wire 14 near the sensor 30 abuts against the protrusion 122. In this way, the axial mounting position of the lead wire 14 relative to the stator shaft 12 can be positioned by the abutment between the lead wire 14 and the protrusion 122, thereby improving assembly efficiency.

[0050] Specifically, the end of the sensor 30 near the lead-out member 14 abuts against the protrusion 122. In this way, the axial mounting position of the sensor 30 relative to the stator shaft 12 can be positioned by the abutment between the sensor 30 and the protrusion 122, thereby improving assembly efficiency.

[0051] Please see Figure 3 In some embodiments, the end of the threading structure 11 away from the sensor 30 is disposed on the outer peripheral surface of the lead-out member 14. In this way, the sensor wire 31 passes through the outer peripheral surface of the stator assembly 10.

[0052] Please see Figure 2 and Figure 3 In some embodiments, the stator assembly 10 further includes a stator winding 13 and a power supply assembly 40. The stator winding 13 is disposed on the stator shaft 12. The power supply assembly 40 includes a fastener 41 and a conductor 42. The conductor 42 passes through a lead-out member 14. One end of the conductor 42 is connected to the stator winding 13. The fastener 41 is connected to the other end of the conductor 42. The fastener 41 is configured to connect the conductor 42 to an external conductor. The fastener 41 serves as the power transmission line fixing point required for the linear motor 102 in this embodiment. The fastener 41 is connected to the lead-out member 14 and to the stator winding 13 via the conductor 42, thereby allowing external electrical energy to be transmitted through the conductor 42 to the stator winding 13, providing power to the stator winding 13.

[0053] It is understandable that the linear motor 102 converts electrical energy into linear motion mechanical energy, and can output linear force and displacement along the motor axis. Based on this characteristic of the linear motor 102, it can be applied to the suspension system 100 of the vehicle 100, providing feasibility for the vehicle 1000 to adapt to complex road conditions. Throughout the entire operation of the vehicle 1000, it is necessary not only to provide capability to the sensor 30 to monitor the working status of the linear motor 102 in real time and provide a basis for the control of the vehicle 1000 suspension system 100, but also to provide energy from the vehicle 1000 to the linear motor 102 to provide energy for its active force output.

[0054] Therefore, in this embodiment, the sensor wire 31, which supplies power to the sensor 30 and transmits signals, is integrated into the output component 14, as well as the path for supplying power to the stator winding 13. In this way, integrating these two power supply paths into the output component 14 can improve the structural compactness of the linear motor 102.

[0055] In addition, the outgoing cable 14 is made of insulating material. Therefore, the insulating properties of the outgoing cable 14 itself can ensure the safety and efficiency of energy transmission.

[0056] It is understandable that, in order to improve the sealing performance inside the linear motor 102, a sealing structure can be configured between the conductor 42 and the lead-out member 14 to improve the sealing performance of the mating parts between the lead-out member 14 and the conductor 42.

[0057] Please see Figure 3 In some embodiments, the circumferential surface of the conductor 42 is provided with a mounting groove 51, and a sealing ring 52 is provided in the mounting groove 51. The outer circumferential surface of the sealing ring 52 is interference-fitted with the lead-out component 14, and the inner circumferential surface is in close contact with the bottom wall of the mounting groove 51.

[0058] Specifically, the lead-out component 14 is provided with a first hole 141 and a second hole 142. The diameter of the first hole 141 is larger than the diameter of the second hole 142. The conductor 42 includes a conductive post 421 and a conductive strip 422. The conductive post 421 is installed in the first hole 141, and the mounting groove 51 is provided on the outer peripheral surface of the post. The conductive strip 422 passes through the second hole 142. The fastener 41 is a screw, which is threadedly connected to the conductive post 421. One end of the conductive post 421 is connected to the conductive strip 422, and the other end of the conductive strip 422 is connected to the stator winding 13.

[0059] The conductive post 421 is connected to the lead-out component 14, which can be achieved through interference fit, adhesive bonding, etc. The conductive strip 422 is also connected to the lead-out component 14, which can be achieved through interference fit, adhesive bonding, etc. In the axial direction of the lead-out component, a portion of the conductive post 421 is in contact with a portion of the conductive strip 422.

[0060] It is understandable that when the stator winding 13 is a three-phase winding, there are three fasteners 41 and three conductors 42. The fasteners 41 and conductors 42 correspond one-to-one with each phase winding to provide energy to each phase winding.

[0061] Please see Figure 2 and Figure 3 In some embodiments, the threading structure 11 is a hole. This allows the surface structure of the component to be intact, which is beneficial for its fit with the stator shaft 12, and allows the end of the sensor wire 31 near the sensor 30 to be arranged close to the axis of the stator assembly 10, so as to balance the force on the stator assembly 10.

[0062] Please see Figure 2 and Figure 3In some embodiments, the wire-passing structure 11 is a hole. The linear motor 102 also includes a wire outlet tube 53, which is sleeved on the portion of the sensor wire 31 located within the wire-passing structure 11. In this way, the wire outlet tube 53 can improve the smoothness of the sensor wire 31 passing through the wire-passing structure 11, which is a hole.

[0063] The cable outlet tube 53 is arranged inside the cable outlet component 14. The cable outlet tube 53 can be formed by injection molding, and the inner surface of the tube is smooth. This reduces the resistance when the sensor wire 31 is threaded through, thereby ensuring that the sensor wire 31 exits smoothly.

[0064] Please see Figure 2 and Figure 3 In some embodiments, the linear motor 102 further includes a first seal 54. The first seal 54 is disposed at the end of the wire-passing structure 11 away from the sensor 30 to seal the mating portion between the wire-passing structure 11 and the sensor wire 31. This improves the internal sealing of the linear motor 102, thereby enhancing its waterproof and dustproof performance.

[0065] The first sealing element 54 is engaged with the outlet element 14, thereby fixing the first sealing element 54 onto the outlet element 14. Specifically, as shown... Figure 5 As shown, the threading structure 11 is a hole, and a mounting hole 143 is provided at the end of the threading structure 11 away from the sensor 30. The diameter of the mounting hole 143 is larger than the diameter of the threading structure 11. A limiting ring 144 is provided on the wall of the mounting hole 143. An annular groove 541 is provided on the outer peripheral surface of the first sealing member 54, and one end of the outer peripheral surface of the first sealing member 54 is a conical surface 542. The conical surface 542 passes through the limiting ring 144 by compression, moves to one end of the limiting ring 144, and then returns to its original state to stop and cooperate with the limiting ring 144. At the same time, the limiting ring 144 is inserted into the annular groove 541. In this way, the first sealing member 54 can be snapped onto the wire outlet member 14.

[0066] In some embodiments, a mounting groove 51 is provided on the outer periphery of the lead-out member 14, and a sealing ring 52 is provided in the mounting groove 51. The outer peripheral surface of the sealing ring 52 is interference-fitted with the wall of the mounting through hole 121, and the inner peripheral surface is in close contact with the bottom wall of the mounting groove 51. In this way, the fit between the lead-out member 14 and the stator shaft 12 can achieve an airtight fit, which helps to ensure the airtightness of the internal environment of the linear motor 102 and isolate the internal and external spaces of the linear motor 102.

[0067] For example, the sealing ring 52 is an O-ring 52.

[0068] It is understood that the dimensions of the first seal 54 and related structures that mate with the first seal 54 can be adjusted according to the corresponding dimensions of the linear motor 102, etc., to match the sealing requirements of different linear motor 102 mounting dimensions and sensor 30 signal line dimensions, etc.

[0069] In summary, in the embodiment of this application where the eddy current sensor 30 is applied to the linear motor 102, the wiring structure of the sensor wire 31 of the eddy current sensor 30 is integrated into the output component 14, and the power transmission line of the stator winding 13 is also integrated. Furthermore, the sealing ring 52 and sealing components isolate the linear motor 102 from the internal and external environments, providing excellent airtightness and insulation performance. Thus, an integrated solution is provided for stable and efficient signal transmission and safe and insulated energy transmission of the linear motor 102. This results in a compact structure and high space utilization of the linear motor 102, making the real-time attitude adjustment of the vehicle 1000 more reliable and its adaptation to multiple operating conditions more convenient.

[0070] It is understood that the sensor 30 in this application is not limited to the eddy current sensor 30. The embodiments in this application are merely illustrative examples using the eddy current sensor 30 as an example. The sensor 30 can also be a Hall sensor 30, etc. In this application, the linear motor 102 can use other sensor 30 solutions. The external signal lines of other sensors 30 can all use the wiring method of the sensor wire 31 provided in this embodiment.

[0071] Please see Figure 6 Secondly, embodiments of this application provide a vibration damper 101, which includes the aforementioned linear motor.

[0072] It is understood that the shock absorber 101 may also include a dust cover, a bellows, etc., which are fitted over the linear motor 102.

[0073] It is understood that the vibration damper 101 includes the linear motor 102 described above, and the vibration damper 101 has all the beneficial effects of the linear motor 102 described above, which will not be repeated here.

[0074] Please see Figure 7 Thirdly, embodiments of this application provide a suspension system 100, which includes the aforementioned shock absorber 101.

[0075] The installation method of the linear motor 102 on the suspension system 100 is not unique and can be set according to the specific application scenario.

[0076] For example, the stator shaft 12 is connected to the vehicle body, and the wishbone 26 is connected to the lower control arm of the suspension system 100.

[0077] It is understood that the suspension system 100 includes the aforementioned shock absorber 101, and the suspension system 100 has all the beneficial effects of the aforementioned shock absorber 101, which will not be repeated here.

[0078] Please see Figure 8 Fourthly, embodiments of this application provide a vehicle 1000, which includes the aforementioned suspension system 100.

[0079] It is understood that the vehicle 1000 can be a gasoline-powered vehicle, a plug-in hybrid electric vehicle, or a new energy vehicle, etc., and this application does not make any specific restrictions on it.

[0080] It is understood that the vehicle 1000 includes the aforementioned suspension system 100, and the vehicle 1000 has all the beneficial effects of the aforementioned suspension system 100, which will not be repeated here.

[0081] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0082] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0083] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0084] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A linear motor (102), characterized in that, include: Stator assembly (10) having a threading structure (11); The moving part assembly (20) is slidably engaged with the stator assembly (10); A sensor (30) is connected to the stator assembly (10) and the sensor (30) is configured to collect data information from the linear motor (102); as well as The sensor wire (31) is connected at one end to the sensor (30) and at the other end passes through the wire-passing structure (11) and out of the linear motor (102).

2. The linear motor (102) according to claim 1, characterized in that, The end of the threading structure (11) away from the sensor (30) passes through one side of the outer peripheral surface of the stator assembly (10).

3. The linear motor (102) according to claim 2, characterized in that, The portion of the sensor wire (31) located in the threading structure (11) is the first segment (311), which extends along the axial direction of the linear motor (102). The portion of the sensor wire (31) that passes through the threading structure (11) is the second segment (312), and the angle A between the first segment (311) and the second segment (312) is an obtuse angle.

4. The linear motor (102) according to claim 3, characterized in that, The included angle A satisfies: 100°≤A≤180°.

5. The linear motor (102) according to any one of claims 1-4, characterized in that, The stator assembly (10) includes a stator shaft (12) and a lead wire (14). The stator shaft (12) is provided with a mounting through hole (121). A portion of the sensor (30) is located inside one end of the mounting through hole (121), and a portion of the lead wire (14) is located inside the other end of the mounting through hole (121). The threading structure (11) is disposed on the outlet member (14), with one end of the threading structure (11) facing the sensor (30) and the other end disposed on the outlet member (14) outside the mounting through hole (121).

6. The linear motor (102) according to claim 5, characterized in that, A protrusion (122) is provided on the wall of the mounting through hole (121), and at least one of the end of the wire outlet (14) near the sensor (30) and the end of the sensor (30) near the wire outlet (14) abuts against the protrusion (122); And / or, the stator assembly (10) further includes a stator winding (13) and a power supply assembly (40), the stator winding (13) being disposed on the stator shaft (12), the power supply assembly (40) including a fastener (41) and a conductor (42), the conductor (42) being disposed through the lead-out member (14), one end of the conductor (42) being connected to the stator winding (13), the fastener (41) being connected to the other end of the conductor (42), the fastener (41) being configured to connect the conductor (42) to an external conductor.

7. The linear motor (102) according to any one of claims 1-4, characterized in that, The wire threading structure (11) is a hole, and the linear motor (102) also includes a wire outlet tube (53), which is sleeved on the part of the sensor wire (31) located inside the wire threading structure (11); And / or, the linear motor (102) further includes a first seal (54) disposed at one end of the wire threading structure (11) away from the sensor (30) to seal the mating portion between the wire threading structure (11) and the sensor wire (31).

8. A vibration damper (101), characterized in that, Includes the linear motor as described in any one of claims 1-7.

9. A suspension system (100), characterized in that, Includes the damper (101) as described in claim 8.

10. A vehicle (1000), characterized in that, Includes the suspension system (100) as described in claim 9.

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