Linear electric motor, suspension system and vehicle

Abstract

A linear electric motor (1000), a suspension system (2000) and a vehicle (3000). The linear electric motor comprises a stator assembly (100) and a rotor assembly (200). The stator assembly comprises a support seat (110) and a center rod (120), the support seat being provided on the center rod and being adapted to be mounted to a vehicle; and the rotor assembly comprises a housing (210) movably matching the center rod, a recess (111) recessed towards the side away from the rotor assembly being formed on the support seat, and the recess being used to provide clearance for part of the structure of the rotor assembly.

Description

Linear motors, suspension systems, and vehicles

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application "Linear Motor, Suspension System and Vehicle" with application number 2023118683539 and application date December 29, 2023, and claims the priority of the above-mentioned Chinese patent application. The entire content of the above-mentioned Chinese patent application is hereby introduced into this application as a reference. Technical Field

[0003] The present application belongs to the technical field of vehicle components, and specifically relates to a linear motor, a suspension system, and a vehicle. Background Art

[0004] The suspension system is connected between the wheels and the body of the vehicle. It can respond to road conditions within a certain period of time to suppress body vibration and ensure body stability. Summary of the Invention

[0005] To this end, the present application proposes a linear motor, which can shorten the overall height while ensuring that the motion stroke remains unchanged, thereby reducing the volume and occupied space of the linear motor; while ensuring that the overall height remains unchanged, the motion stroke can be increased to expand the scope of application of the linear motor, solving the technical problem in related technologies that the suspension system is limited in the types of vehicles that can be adapted.

[0006] According to an embodiment of the present application, the linear motor includes: a stator assembly, which includes a support seat and a center rod, the support seat is arranged on the center rod, and the support seat is suitable for being installed on a vehicle; a mover assembly, which includes an outer shell, and the outer shell is movably matched with the center rod, and a recess is formed on the support seat, which is recessed toward a side away from the mover assembly, and the recess is configured to avoid part of the mover assembly.

[0007] According to the linear motor of the embodiment of the present application, a recess is provided on the support seat for avoiding part of the mover assembly, so that part of the structure of the mover assembly can move into the recess during the movement relative to the stator assembly. In this way, the motion stroke of the linear motor can be increased while ensuring that the overall height of the linear motor remains unchanged, thereby expanding the scope of application of the linear motor. At the same time, while ensuring that the motion stroke of the linear motor remains unchanged, the overall height of the linear motor can be shortened, so that the linear motor of the present application can be used in situations where the installation height is limited. At the same time, it can also avoid the linear motor from occupying too much space, providing space for the installation of other structural parts in the vehicle. In other words, the linear motor of the present application can shorten the overall height of the linear motor or increase the motion stroke of the linear motor.

[0008] In some embodiments of the present application, the shell is provided with an insertion port and a protrusion arranged around the insertion port, the center rod passes through the insertion port and extends into the shell, the recess includes a first groove, and the protrusion can be extended into the first groove.

[0009] In some embodiments of the present application, the protrusion is provided at the end of the outer shell and extends toward the support seat, and the recess further includes a second groove, which is provided on the side of the first groove facing the mover assembly and connected to the first groove, and the second groove is used to avoid the end of the outer shell.

[0010] In some embodiments of the present application, the linear motor further includes a guide bearing, which is disposed in the protrusion, and the center rod is in sliding engagement with the guide bearing.

[0011] In some embodiments of the present application, the linear motor further includes a sensor assembly, and the sensor assembly is used to detect the moving position of the mover assembly.

[0012] In some embodiments of the present application, the sensor assembly includes a detection member and a measured member, one of the detection member and the measured member is arranged on the center rod, and the other is arranged on the outer shell, and the detection member and the measured member cooperate to detect the moving position of the movable assembly.

[0013] In some embodiments of the present application, the detection member is provided on the housing and faces the recess, and the recess is used to avoid the detection member.

[0014] In some embodiments of the present application, the shell is provided with an insertion opening and a protrusion arranged around the insertion opening, the center rod passes through the insertion opening and extends into the shell, and the detection member is provided on the protrusion.

[0015] In some embodiments of the present application, the sensor assembly further includes a wire, the wire is electrically connected to the detection element, and the housing is provided with a wire groove for guiding the routing of the wire.

[0016] In some embodiments of the present application, the linear motor further includes a protective cover, which is disposed on the periphery of the mover assembly and located between the mover assembly and the support seat.

[0017] In some embodiments of the present application, both ends of the protective cover are fixedly connected to the outer shell and the support base respectively.

[0018] In some embodiments of the present application, both ends of the protective cover are provided with limiting grooves, and the outer shell and the support seat respectively cooperate with the limiting grooves.

[0019] In some embodiments of the present application, the linear motor further includes a lower tray, which is disposed on the outer peripheral wall of the housing, and a placement space for placing a shock-absorbing spring is defined between the support seat and the lower tray.

[0020] In some embodiments of the present application, a closed cavity is defined in the shell, the central rod extends into the cavity, and the cavity is provided with an exhaust hole.

[0021] In some embodiments of the present application, the exhaust hole is provided at the top of the housing.

[0022] In some embodiments of the present application, the exhaust hole is a threaded hole.

[0023] According to an embodiment of the present application, the suspension system includes the aforementioned linear motor, wherein one of the stator assembly and the mover assembly is connected to the wheel end, and the other is connected to the vehicle body end.

[0024] According to the suspension system of the embodiment of the present application, by adopting the aforementioned linear motor, the occupied space of the suspension system can be effectively reduced or the applicable scope of the suspension system can be expanded.

[0025] A vehicle according to an embodiment of the present application includes the aforementioned suspension system.

[0026] According to the vehicle of the embodiment of the present application, the aforementioned suspension system is adopted to improve the smoothness of vehicle travel and ensure the driving experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0028] FIG1 is a schematic diagram of a linear motor according to some embodiments of the present application.

[0029] FIG2 is a cross-sectional view of the linear motor in FIG1 .

[0030] FIG3 is a partial enlarged view of area I in FIG2 .

[0031] FIG4 is a cross-sectional view of the linear motor in FIG1 with some structures omitted.

[0032] FIG5 is a schematic diagram of the stator assembly and the mover assembly in FIG4 after relative movement.

[0033] FIG6 is a schematic diagram of the linear motor in FIG1 without the protective cover and the damping spring.

[0034] FIG7 is a schematic diagram of the linear motor in FIG6 without the support base.

[0035] FIG8 is a cross-sectional view of the linear motor in FIG7 .

[0036] FIG9 is a top view of the linear motor in FIG7 .

[0037] FIG10 is a schematic diagram of a vehicle according to some embodiments of the present application.

[0038] : Illustrations: 1000, linear motor; 100, stator assembly; 110, support seat; 111, recess; 1111, first groove; 1112, second groove; 112, tower top; 113, first limiting protrusion; 120, center rod; 200, mover assembly; 210, housing; 211, insertion opening; 212, protrusion; 213, lead groove; 214, exhaust hole; 215, second limiting protrusion; 300, sensor component; 310, detection part; 320, test part; 400, protective cover; 410, limiting groove; 500, lower tray; 600, shock-absorbing spring; 710, guide bearing; 720, guide part; 810, first limiting part; 820, second limiting part; 2000, suspension system; 3000, vehicle. DETAILED DESCRIPTION

[0039] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0040] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0041] The linear motor 1000 according to an embodiment of the present application will be described below with reference to the accompanying drawings.

[0042] In related technologies, when the suspension system is working, relative movement will occur between the mover assembly and the stator assembly of the linear motor. However, the existing linear motors are large in size and occupy a lot of space, which limits the types of vehicles that the suspension system can be adapted to.

[0043] In order to solve the above problems, as shown in FIG1 , a linear motor 1000 according to an embodiment of the present application includes: a stator assembly 100 and a mover assembly 200 .

[0044] 1 and 2 , the stator assembly 100 includes a support base 110 and a center rod 120. The support base 110 is disposed on the center rod 120 and is suitable for installation on a vehicle 3000. By installing the stator assembly 100 on the vehicle 3000, the linear motor 1000 is connected to the vehicle 3000, thereby facilitating the use of the linear motor 1000 to cushion the impact of the road surface on the vehicle 3000 during driving, thereby improving the ride comfort of the vehicle 3000 and enhancing the user experience.

[0045] In some embodiments, as shown in Figure 2, the support base 110 is arranged on the top of the center rod 120 so that the support base 110 is arranged close to the body of the vehicle 3000, thereby preventing the center rod 120 from hindering the support base 110 from being installed on the vehicle 3000, thereby reducing the difficulty of connecting the stator assembly 100 to the vehicle 3000.

[0046] It should be noted that the top of the center rod 120 mentioned above can be understood as the end of the center rod 120 away from the movable sub-assembly 200. In this way, after the stator assembly 100 and the movable sub-assembly 200 are assembled, the support seat 110 can be set away from the movable sub-assembly 200 to facilitate the installation of the support seat 110 to the vehicle 3000.

[0047] In a specific example, as shown in Figures 1 and 2, the linear motor 1000 extends up and down, part of the stator assembly 100 is located at the upper end of the mover assembly 200, and the top of the center rod 120 refers to the upper part of the center rod 120.

[0048] In some embodiments, as shown in Figures 1 and 2, a tower top 112 is provided on the support base 110, and the support base 110 is installed to the vehicle 3000 through the tower top 112 to achieve installation coordination between the support base 110 and the vehicle 3000 and reduce the difficulty of installing the support base 110 and the vehicle 3000.

[0049] As shown in Figures 1 and 2, the mover assembly 200 includes a housing 210, which is movably engaged with the center rod 120. A recess 111 is formed on the support seat 110, which is recessed toward the side away from the mover assembly 200. The recess 111 is used to avoid part of the mover assembly 200. In this way, when the mover assembly 200 moves toward the support seat 110, part of the mover assembly 200 can be moved into the recess 111 to prevent the stator assembly 100 from prematurely obstructing contact with the mover assembly 200, thereby hindering the movement of the mover assembly 200, thereby increasing the movement stroke of the mover assembly 200 and the movement stroke of the linear motor 1000, so that the linear motor 1000 can be applied to different types of vehicles 3000, thereby expanding the scope of application of the linear motor 1000.

[0050] At the same time, when there is no need to increase the movement stroke of the linear motor 1000, due to the provision of the recess 111, the overall height of the linear motor 1000 can be shortened, so that the linear motor 1000 of the present application can be used when the installation height is limited. This can also expand the scope of application of the linear motor 1000, and shortening the overall height can also avoid the linear motor 1000 from occupying too much space, providing a location for the setting of other structural parts in the vehicle 3000, and reducing the difficulty of assembling the vehicle 3000.

[0051] That is to say, the present application provides a recess 111 on the support seat 110 for avoiding the mover assembly 200, thereby increasing the movement stroke of the linear motor 1000 while ensuring that the overall height of the linear motor 1000 remains unchanged, thereby expanding the scope of application of the linear motor 1000; while ensuring that the movement stroke of the linear motor 1000 remains unchanged, the overall height of the linear motor 1000 can be shortened, so that while expanding the scope of application of the linear motor 1000, the linear motor 1000 can also be avoided from occupying too much space, providing space for the arrangement of other structural components in the vehicle 3000.

[0052] Among them, by setting the housing 210 and the center rod 120 to be movable, the movable assembly 200 and the stator assembly 100 can be movable together, so that the movable assembly 200 and the stator assembly 100 can be used to buffer the impact transmitted by the road surface, thereby improving the smoothness of the vehicle 3000.

[0053] It can be seen from the above structure that the linear motor 1000 of the embodiment of the present application is provided with a recess 111 for limiting the mover assembly 200 on the support seat 110 located on one side of the shell 210, so as to ensure that when the mover assembly 200 moves toward the support seat 110, part of the structure of the mover assembly 200 can be moved into the recess 111, thereby avoiding the stator assembly 100 from prematurely hindering the movement of the mover assembly 200. In this way, while ensuring that the overall height of the linear motor 1000 remains unchanged, the movement stroke of the linear motor 1000 can be increased, thereby expanding the scope of application of the linear motor 1000; while ensuring that the movement stroke of the linear motor 1000 remains unchanged, the overall height of the linear motor 1000 can be adaptively shortened, thereby expanding the scope of application of the linear motor 1000, and avoiding the linear motor 1000 from occupying too much space in the vehicle 3000 after being installed, providing a position for the arrangement of other structural parts in the vehicle 3000.

[0054] It can be understood that compared with the related art, the present application provides a recess 111 on the stator assembly 100 for avoiding part of the structure of the mover assembly 200, so as to prevent the stator assembly 100 from hindering the movement of the mover assembly 200, thereby shortening the overall height of the linear motor 1000 or increasing the movement stroke of the linear motor 1000, thereby expanding the scope of application of the linear motor 1000.

[0055] In some embodiments, one of the mover assembly 200 and the stator assembly 100 is provided with a permanent magnet, and the other is provided with an electromagnetic coil suitable for energizing, so as to achieve coupling and cooperation between the stator assembly 100 and the mover assembly 200, so that the mover assembly 200 can move back and forth.

[0056] It can also be understood here that the linear motor 1000 is used to drive the mover assembly 200 to move back and forth, so that when the linear motor 1000 is used in the suspension system 2000, it can effectively buffer the impact transmitted by the road surface and improve the smoothness of the vehicle 3000.

[0057] In a specific example, the electromagnetic coil is energized, and the electromagnetic coil generates a magnetic field to make the permanent magnet move linearly. At this time, the permanent magnet and the electromagnetic coil cooperate to achieve the coupling of the stator assembly 100 and the mover assembly 200 (the cooperation of the permanent magnet and the electromagnetic coil to realize the working principle of the linear motor 1000 belongs to the existing technology and will not be repeated here), thereby enabling the mover assembly 200 to move back and forth to achieve the purpose of vibration reduction.

[0058] In some embodiments, the stator assembly 100 is suitable for being connected to the body end of the vehicle 3000, and the mover assembly 200 is suitable for being connected to the wheel end of the vehicle 3000. When the wheel moves up and down relative to the body, the mover assembly 200 moves relative to the stator assembly 100 to cushion the impact transmitted from the road surface.

[0059] Of course, in some other embodiments, the stator assembly 100 may be connected to the wheel end of the vehicle 3000 , and the mover assembly 200 may be connected to the body end of the vehicle 3000 .

[0060] In some embodiments, as shown in conjunction with Figures 2, 4, and 5, the housing 210 is provided with an insertion opening 211 and a protrusion 212. The protrusion 212 is arranged around the insertion opening 211. The center rod 120 extends into the housing 210 through the insertion opening 211. The recess 111 includes a first groove 1111. The protrusion 212 is an annular protrusion 212. The annular protrusion 212 can be inserted into the first groove 1111. The first groove 1111 is used to avoid the annular protrusion 212. That is to say, when the mover assembly 200 moves toward the support seat 110, the annular protrusion 212 can extend into the first groove 1111 to avoid the annular protrusion 212 stopping at the support seat 110 while following the movement of the mover assembly 200, thereby avoiding the nearest point of the mover assembly 200 close to the support seat 110 contacting the support seat 110 to hinder the movement of the mover assembly 200, thereby increasing the moving stroke of the mover assembly 200 or shortening the overall height of the linear motor 1000, thereby expanding the scope of application of the linear motor 1000.

[0061] It should be noted that, by providing an insertion opening 211 on the housing 210, the center rod 120 of the stator assembly 100 can be inserted into the housing 210 through the insertion opening 211, thereby achieving the mating connection between the mover assembly 200 and the stator assembly 100. It is understandable that the first groove 1111 of the present application is provided in the direction of the support base 110 close to the center rod 120, that is, in the middle part of the support base 110. The provision of the first groove 1111 here can avoid the influence of the groove provided on the support base 110 on its strength.

[0062] At the same time, by providing an annular protrusion 212 around the insertion opening 211, when the center rod 120 of the stator assembly 100 is inserted into the outer shell 210 through the insertion opening 211, the annular protrusion 212 can be arranged around the outer periphery of the center rod 120 to increase the contact area between the mover assembly 200 and the stator assembly 100, so as to facilitate the use of the stator assembly 100 to limit the moving path of the mover assembly 200, thereby avoiding the mover assembly 200 from offsetting during the movement process, that is, ensuring that the mover assembly 200 can move in a predetermined direction and ensuring the accuracy of the movement of the mover assembly 200. In this way, to a certain extent, the relative distance between the stator assembly 100 and the mover assembly 200 remains unchanged during the mutual movement, so that the wheels can move in a predetermined direction and ensure the stability of the vehicle 3000 during driving.

[0063] In some embodiments, as shown in Figures 2, 3, and 4, an annular protrusion 212 is provided at the end of the housing 210 and extends toward the support base 110. This ensures that the annular protrusion 212 has a certain extension length while also preventing the annular protrusion 212 from occupying space within the housing 210. This frees up more valuable axial space for the design of the electromagnetic components within the housing 210, thereby enabling the linear motor 1000 to achieve better electromagnetic thrust performance and ensure the operating performance of the linear motor 1000.

[0064] As described below, the annular protrusion 212 can be used to accommodate at least one of the guide bearing 710 and a portion of the sensor assembly 300. Thus, because the annular protrusion 212 is disposed corresponding to the first groove 1111 and the annular protrusion 212 is used to accommodate at least one of the guide bearing 710 and a portion of the sensor assembly 300, the space of the mover assembly 200 would not be increased by disposing the portion of the guide bearing 710 and the sensor assembly 300 elsewhere, thereby avoiding the need to increase the size of the linear motor 1000 or shorten the stroke of the linear motor 1000.

[0065] In some embodiments, as shown in Figures 2, 3 and 4, a guide bearing 710 is provided on the inner wall of the annular protrusion 212, and the guide bearing 710 is slidably connected to the outer peripheral wall of the center rod 120, so that the guide bearing 710 can be used to guide the movement of the mover assembly 200, thereby avoiding the displacement of the mover assembly 200 during the movement and ensuring the accuracy of the movement of the mover assembly 200.

[0066] At the same time, the guide bearing 710 is used to guide the relative movement of the central rod 120 and the movable subassembly 200, and the guiding performance can also be ensured.

[0067] In addition, by arranging the guide bearing 710 on the inner wall of the annular protrusion 212, since the annular protrusion 212 has a certain protrusion length, the guide bearing 710 can be guaranteed to have a certain extension length, thereby ensuring the guiding quality, and improving the structural strength of the guide bearing 710, avoiding the guide bearing 710 from deformation due to wear, and avoiding the guide bearing 710 from deformation and skewing, thereby ensuring the guiding quality and extending the service life of the guide bearing 710.

[0068] In some embodiments, the inner circumferential wall of the annular protrusion 212 is provided with a groove for accommodating the guide bearing 710. The guide bearing 710 is placed in the groove to achieve the positioning of the guide bearing 710 within the annular protrusion 212, thereby enabling the guide bearing 710 to be disposed around the outer circumference of the center rod 120. The guide bearing 710 is used to limit the relative movement of the center rod 120, thereby providing a guide function and preventing the mover assembly 200 from deflecting during movement.

[0069] At the same time, by providing a groove on the inner circumferential wall of the annular protrusion 212 , the difficulty of matching the annular protrusion 212 with the guide bearing 710 can be reduced, thereby ensuring that the guide bearing 710 can be effectively arranged in the annular protrusion 212 .

[0070] In some embodiments, the guide bearing 710 is fixedly connected to the inner circumferential wall of the annular protrusion 212 to achieve a fixed connection between the guide bearing 710 and the annular protrusion 212. This makes it easier to use the annular protrusion 212 to support the guide bearing 710, thereby improving the positional stability of the guide bearing 710 and ensuring the guiding performance of the guide bearing 710.

[0071] It should be noted that the fixed connection mentioned above can be a non-detachable connection such as bonding, welding, etc., or a detachable connection such as bolt connection, clamping, etc., and there is no limitation here.

[0072] In some embodiments, as shown in Figure 2, a guide member 720 is provided in the housing 210, and the center rod 120 extends into the housing 210 and slides with the guide member 720, so that the guide member 720 can be used to guide the movement of the movable assembly 200, thereby avoiding displacement of the movable assembly 200 during the movement and ensuring the accuracy of the movement of the movable assembly 200.

[0073] Optionally, as shown in Figure 2, the guide member 720 is a guide rod, and the center rod 120 extends into the outer shell 210 and is sleeved on the outer circumference of the guide rod, so that the guide member 720 can be used to guide the moving direction of the movable assembly 200 and reduce the difficulty of matching the guide member 720 with the center rod 120.

[0074] In the description of this application, features defined as "first" or "second" may explicitly or implicitly include one or more such features, and are used to distinguish and describe features, without any distinction in order or importance.

[0075] In some embodiments, as shown in Figures 2, 4 and 5, the recess 111 also includes a second groove 1112, which is arranged on the side of the first groove 1111 facing the mover assembly 200 and connected to the first groove 1111. The second groove 1112 avoids the end of the housing 210. That is to say, in the axial direction of the linear motor 1000, the second groove 1112 is arranged below the first groove 1111. Since the annular protrusion 212 is arranged at the end of the shell 210 and extends upward, when the annular protrusion 212 moves into the first groove 1111, the end of the shell 210 can be moved into the second groove 1112, so that the second groove 1112 can be used to avoid and limit the end of the shell 210, so that the recess 111 of the present application is not only used to avoid the annular protrusion 212 on the shell 210, but also to limit and avoid the end of the shell 210. In this way, when the mover assembly 200 moves toward the stator assembly 100, the end of the shell 210 can also move to the recess 111, thereby maximizing the moving stroke of the mover assembly 200 or maximizing the shortening of the overall height of the linear motor 1000, thereby expanding the movement stroke of the linear motor 1000.

[0076] It should be noted that when the mover assembly 200 does not move toward the stator assembly 100, the relative positions of the end of the housing 210, the annular protrusion 212 and the recess 111 can be seen in Figure 4; when the mover assembly 200 moves toward the stator assembly 100, the relative positions of the end of the housing 210, the annular protrusion 212 and the recess 111 can be seen in Figure 5.

[0077] In some embodiments, as shown in FIG2 , the linear motor 1000 further includes a sensor assembly 300 for detecting the movement position of the mover assembly 200. This facilitates accurate determination of the position of the mover assembly 200, facilitates control of the movement of the mover assembly 200, ensures the position accuracy of the mover assembly 200 after movement, and improves the operating performance of the linear motor 1000.

[0078] At the same time, using the sensor component 300 to detect the moving position of the mover assembly 200 can also reduce the difficulty of detecting the position of the mover assembly 200 and ensure the accuracy of the position detection of the mover assembly 200.

[0079] In some embodiments, as shown in Figures 2, 4, and 6, the sensor assembly 300 includes a detection member 310 and a measured member 320. One of the detection member 310 and the measured member 320 is located on the center rod 120, and the other is located on the housing 210. The detection member 310 and the measured member 320 cooperate to detect the movement position of the mover assembly 200. This allows accurate determination of the position of the mover assembly 200, ensures the position accuracy of the mover assembly 200 after movement, and improves the operating performance of the linear motor 1000.

[0080] In some embodiments, as shown in conjunction with Figures 2, 4, and 6, the detection member 310 is disposed on the housing 210, and the detected object 320 is disposed on the center rod 120, with the detection member 310 and the detected object 320 being disposed opposite each other. This allows the detection member 310 to be supported by the housing 210 and the detected object 320 to be supported by the center rod 120, thereby improving the positional stability of the detection member 310 and the detected object 320 and reducing the difficulty of fixing the detection member 310 and the detected object 320, thereby ensuring the detection accuracy of the sensor assembly 300.

[0081] At the same time, by arranging the detection member 310 on the outer shell 210 and the measured member 320 on the center rod 120, it can also be ensured that when the movable assembly 200 moves relative to the stator assembly 100, the detection member 310 can effectively move relative to the measured member 320, thereby ensuring that the position of the movable assembly 200 can be effectively detected using the detection member 310 and the measured member 320.

[0082] In some embodiments, the detection part 310 is a reading head, and the measured part 320 is a magnetic grid. The magnetic grid is embedded in the center rod 120, and the magnetic field signal of the magnetic grid is read by the reading head fixed on the outer shell 210, so that the sensor assembly 300 is formed into a position sensor, thereby realizing the detection of the position of the mover assembly 200 relative to the stator assembly 100.

[0083] It should be noted that the position sensor mentioned above can be an eddy current sensor, a laser sensor, etc.

[0084] It should also be noted that, according to the measurement characteristics of different types of position sensors, the positions of the detection member 310 and the measured member 320 can be adaptively adjusted, and it may not be limited to setting the detection member 310 on the housing 210 and setting the measured member 320 on the center rod 120, as long as it is ensured that the detection member 310 and the measured member 320 cooperate to effectively detect the position of the mover assembly 200.

[0085] In some embodiments, as shown in Figures 2, 4, and 5, the detection member 310 is disposed on the housing 210 and directly opposite the recess 111, and the recess 111 is used to avoid the detection member 310. In other words, when the mover assembly 200 moves toward the support seat 110, the detection member 310 can move into the recess 111 to prevent the detection member 310 from abutting the support seat 110 while following the movement of the mover assembly 200, thereby preventing the stator assembly 100 from obstructing the movement of the mover assembly 200, increasing the moving stroke of the mover assembly 200, or shortening the overall height of the linear motor 1000.

[0086] That is, the recess 111 is used to simultaneously avoid the annular protrusion 212 on the housing 210, the end of the housing 210 and the detection member 310 on the housing 210, so as to effectively prevent the mover assembly 200 from stopping against the support seat 110 too early during movement.

[0087] In some embodiments, as shown in combination with FIG. 4 and FIG. 5 , after the mover assembly 200 moves toward the stator assembly 100 , the detection member 310 may move into the recess 111 .

[0088] In some embodiments, as shown in Figures 2 and 4 , the housing 210 is provided with an insertion opening 211 and an annular protrusion 212 disposed around the insertion opening 211. The center rod 120 extends into the housing 210 through the insertion opening 211, and the detection member 310 is disposed on the annular protrusion 212. Because the annular protrusion 212 is disposed on the housing 210 and disposed around the insertion opening 211 and facing the end of the support seat 110, by arranging the detection member 310 on the annular protrusion 212, the detection member 310 can be disposed on the housing 210 and facing the end of the support seat 110, thereby enabling the detection member 310 to be disposed directly opposite the recess 111, making it easier to avoid the detection member 310 by utilizing the recess 111, thereby avoiding the need to increase the size of the movable subassembly 200 due to the need to provide the detection member 310, thereby avoiding prematurely stopping at the support seat 110 during the movement of the movable subassembly 200, thereby increasing the moving stroke of the movable subassembly 200 or shortening the overall height of the linear motor 1000.

[0089] As shown in FIG5 , when the mover assembly 200 reaches the upper limit position, the annular protrusion 212 is accommodated in the recess 111. Since the annular protrusion 212 is closer to the support seat 110 than the outer side of the end portion of the housing 210 of the mover assembly 200, if the recess 111 is not provided, the annular protrusion 212 will contact the support seat 110 before the outer side of the end portion of the housing 210 of the mover assembly 200 contacts the support seat 110, thereby shortening the stroke of the linear motor 1000. If the annular protrusion 212 is not provided, the thickness of the end portion of the housing 210 of the mover assembly 200 will inevitably be increased in order to accommodate the guide bearing 710 and the sensor assembly 300, causing the outer side of the end portion of the housing 210 of the mover assembly 200 to contact the support seat 110 prematurely, thereby affecting the stroke of the linear motor 1000.

[0090] This solution provides an annular protrusion 212, which reduces the thickness of the end of the outer shell 210 of the mover assembly 200 while ensuring the installation of the guide bearing 710 and the sensor assembly 300, and provides a recess 111 on the support seat 110 to accommodate the annular protrusion 212, thereby preventing the annular protrusion 212 from contacting the support seat 110 before the outer side of the end of the outer shell 210 of the mover assembly 200 contacts the support seat 110, thereby effectively increasing the stroke of the linear motor 1000.

[0091] At the same time, positioning the detection member 310 on the annular protrusion 212 can also reduce the difficulty of matching the detection member 310 with the housing 210, and facilitate the use of the annular protrusion 212 to support the detection member 310, thereby improving the positional stability of the detection member 310 and ensuring the working performance of the detection member 310. The annular protrusion 212 can not only realize the installation of the guide bearing 710, but also realize the installation of the detection member 310. At the location where the guide bearing 710 is installed, the relative motion between the stator assembly 100 and the mover assembly 200 is most accurately expressed. Therefore, positioning the detection member 310 on the annular protrusion 212 can also improve the measurement accuracy of the detection member 310.

[0092] When the sensor of the present application is a sensor that generates a magnetic field, such as a Hall sensor, the annular protrusion 212 extends from the end of the housing 210 toward the support seat 110, so that the annular protrusion 212 is located on the outside of the end, and part of the structure of the sensor assembly 300 is set on the annular protrusion 212, thereby avoiding the influence of the electromagnetic coil or magnet in the housing 210 on the sensor assembly 300, which is more conducive to the operation of the sensor assembly 300.

[0093] That is to say, the annular protrusion 212 of the present application can not only be used to increase the contact area between the mover assembly 200 and the stator assembly 100, but also provide an installation position for the detection part 310, reduce the difficulty of matching the detection part 310 with the housing 210, and improve the position stability of the detection part 310.

[0094] In some embodiments, a mounting groove is provided on the annular protrusion 212, and the detection member 310 is installed in the mounting groove by bolts to achieve the setting of the detection member 310 on the annular protrusion 212 and ensure the matching strength between the detection member 310 and the annular protrusion 212, so that the relative position of the detection member 310 and the annular protrusion 212 is stable.

[0095] Optionally, the piece under test 320 is embedded in the surface of the center rod 120 by bolts to ensure the matching strength between the piece under test 320 and the center rod 120, so that the relative position of the piece under test 320 and the center rod 120 is stable, thereby improving the position stability of the piece under test 320.

[0096] In a specific example, as the movable subassembly 200 moves, the detecting member 310 can detect the moving position of the movable subassembly 200 by measuring signals at different positions on the measured member 320 .

[0097] In some embodiments, the sensor assembly 300 further includes a wire (not shown), which is electrically connected to the detection member 310. The housing 210 is provided with a wire groove 213 for guiding the routing of the wire (the specific structure of the wire groove 213 can be seen in Figures 6 and 7). By providing a wire electrically connected to the detection member 310, the detection signal can be transmitted to the controller via the wire. The controller determines the position of the movable subassembly 200 through signal processing, thereby achieving the purpose of using the sensor assembly 300 to detect the movement position of the movable subassembly 200.

[0098] At the same time, a guide groove 213 for guiding the routing of the wire is provided on the housing 210 to reduce the difficulty of routing the wire. The guide groove 213 can also be used to fix the wire to ensure the position stability of the wire and avoid the wire bending as the mover assembly 200 moves, thereby affecting the transmission of the signal, thereby improving the reliability of the linear motor 1000. The guide groove 213 can also be used to protect the wire, extend the service life of the wire, improve the safety of the wire, and improve the reliability of the wire.

[0099] In some embodiments, the lead groove 213 is formed below the annular protrusion 212 and communicates with the mounting groove on the annular protrusion 212 to facilitate electrical connection between the wire and the detection member 310 .

[0100] It should be noted that the length of the lead groove 213 can be set according to the position of the external connector, and the depth of the lead groove 213 can be set according to the radial size of the wire and the structural strength of the housing 210, which is not limited here.

[0101] Optionally, the wire groove 213 is integrally formed with the housing 210. That is, the wire groove 213 is integrally formed on the housing 210 to reduce the difficulty of forming the wire groove 213.

[0102] In some embodiments, as shown in Figures 1, 2, and 3, the linear motor 1000 further includes a protective cover 400. The protective cover 400 is disposed on the outer periphery of the mover assembly 200 and is located between the mover assembly 200 and the support base 110. The protective cover 400 protects the mover assembly 200 and the stator assembly 100, thereby extending the service life of the linear motor 1000 and ensuring the operating performance of the linear motor 1000.

[0103] Optionally, the protective cover 400 is made of waterproof and / or dustproof material, so that the protective cover 400 is formed into a dustproof cover and / or waterproof cover, thereby preventing dust, water stains, etc. from interfering with the linear motor 1000 and ensuring the reliability of the linear motor 1000.

[0104] In some embodiments, the two ends of the protective cover 400 are fixedly connected to the housing 210 and the support base 110, respectively. This ensures that the protective cover 400 is fixedly connected to the mover assembly 200 and the stator assembly 100, facilitates the use of the mover assembly 200 and the stator assembly 100 to support the protective cover 400, improves the positional stability of the protective cover 400, and prevents the protective cover 400 from shifting relative to the mover assembly 200 and the stator assembly 100, thereby ensuring that the protective cover 400 can be stably disposed between the mover assembly 200 and the support base 110, and effectively protects the mover assembly 200 and the stator assembly 100 using the protective cover 400.

[0105] In some embodiments, as shown in FIG2 and FIG3 , both ends of the protective cover 400 are provided with limiting grooves 410, and the outer shell 210 and the support base 110 respectively cooperate with the limiting grooves 410. This ensures that the outer shell 210, the support base 110, and the protective cover 400 are fixedly matched, thereby facilitating the use of the movable assembly 200 and the stator assembly 100 to support the protective cover 400 and reducing the difficulty of matching the movable assembly 200, the stator assembly 100, and the protective cover 400.

[0106] In some embodiments, in combination with Figures 2 and 3, a first limiting protrusion 113 is provided on the support seat 110, and a second limiting protrusion 215 is provided on the outer shell 210. The limiting groove 410 located at the upper end of the protective cover 400 is limited and matched with the first limiting protrusion 113, and the limiting groove 410 located at the lower end of the protective cover 400 is limited and matched with the second limiting protrusion 215, thereby realizing the matching of the outer shell 210 and the support seat 110 with the limiting groove 410 respectively, and reducing the difficulty of matching the outer shell 210, the support seat 110 and the protective cover 400.

[0107] In a specific example, the first limiting protrusion 113 and the second limiting protrusion 215 can be limited and fitted in the corresponding limiting groove 410, so as to achieve the purpose of fixedly connecting the protective cover 400 with the outer shell 210 and the support seat 110 by utilizing the limiting protrusions (the first limiting protrusion 113 and the second limiting protrusion 215) and the limiting groove 410. In this way, there is no need for an external connecting device to assemble the protective cover 400, which improves the degree of integration of the linear motor 1000, increases the freedom of layout space, and is also conducive to lightweight design.

[0108] Optionally, the first limiting protrusion 113 and the support base 110 are integrally formed, and the second limiting protrusion 215 and the housing 210 are integrally formed, so as to reduce the difficulty of forming the first limiting protrusion 113 and the second limiting protrusion 215 .

[0109] In some embodiments, as shown in Figures 1 and 2, the linear motor 1000 further includes a lower tray 500, which is disposed on the outer peripheral wall of the housing 210. A placement space for a vibration-damping spring 600 is defined between the support base 110 and the lower tray 500. The vibration-damping spring 600 is placed in the placement space so that the support base 110 and the lower tray 500 cooperate to fix the vibration-damping spring 600. In this way, when the vehicle 3000 is excited by the road surface and the mover assembly 200 performs up and down telescopic motion, the vibration-damping spring 600 can be used to buffer and absorb vibrations. At the same time, the vibration-damping spring 600 can also play a certain damping role, thereby improving the vibration reduction effect of the linear motor 1000 and thus improving the comfort of the vehicle 3000.

[0110] That is to say, the present application sets the lower tray 500 on the outer wall of the shell 210 mainly to form a placement space for the shock-absorbing spring 600, so as to ensure that the shock-absorbing spring 600 can be formed on the linear motor 1000, thereby improving the shock-absorbing effect of the linear motor 1000.

[0111] In some embodiments, as shown in Figures 1 and 2, the shock-absorbing spring 600 is arranged between the support seat 110 and the lower tray 500, and the upper end of the shock-absorbing spring 600 is abutted against the support seat 110, and the lower end of the shock-absorbing spring 600 is abutted against the lower tray 500. In this way, during the movement of the movable assembly 200, the shock-absorbing spring 600 can be compressed or stretched, so that the shock-absorbing spring 600 can provide part of the damping force and withstand part of the vibration impact, thereby improving the comfort of the vehicle 3000.

[0112] Optionally, as shown in Figures 1 and 2, the shock-absorbing spring 600 is mounted on the outer periphery of the protective cover 400, so that the mover assembly 200 and the support seat 110 of the present application are not only equipped with the protective cover 400 but also equipped with the shock-absorbing spring 600, so as to significantly improve the space utilization of the linear motor 1000 and enhance the tightness of the linear motor 1000.

[0113] Optionally, the lower tray 500 is integrally formed with the outer shell 210 to reduce the difficulty of forming the lower tray 500 and ensure the connection strength between the lower tray 500 and the outer shell 210, ensuring that the lower tray 500 can be stably arranged on the periphery of the outer shell 210, making it convenient to use the lower tray 500 to support the shock-absorbing spring 600. At the same time, the setting of the connecting device between the lower tray 500 and the outer shell 210 can be eliminated, thereby simplifying the structure of the linear motor 1000 and making the structure of the linear motor 1000 compact.

[0114] In summary, the lower tray 500, the second limiting protrusion 215, and the lead groove 213 of the present application are all integrally formed on the shell 210, so as to eliminate the need for the connection device and achieve the purpose of lightweighting and reducing costs.

[0115] In some embodiments, as shown in conjunction with Figures 2, 3, and 8, a closed cavity is defined within the housing 210, into which the center rod 120 extends, and the cavity is provided with an exhaust hole 214. The exhaust hole 214 is used to achieve communication between the cavity and the external space, thereby facilitating the exhaust of hot air within the cavity through the exhaust hole 214, thereby reducing the temperature of the mover assembly 200, achieving the purpose of dissipating heat from the linear motor 1000, and improving the heat dissipation capacity of the linear motor 1000, thereby extending the service life of the suspension system 2000 and enhancing the operating stability of the suspension system 2000.

[0116] It should be noted that, by providing the exhaust holes 214 for heat dissipation, compared with an external cooling mechanism, the volume of the linear motor 1000 can be effectively reduced, and the difficulty of laying out the linear motor 1000 can be reduced.

[0117] In some embodiments, the housing 210 is further provided with an air inlet hole communicating with the cavity so as to introduce external air into the cavity.

[0118] The arrows in FIG. 8 show the path of the air with a higher temperature in the cavity being discharged from the exhaust holes 214 .

[0119] In some embodiments, as shown in FIG2 , FIG8 , and FIG9 , the exhaust hole 214 is provided on the top of the housing 210 , so that the exhaust hole 214 can communicate with the cavity, thereby facilitating the use of the exhaust hole 214 to discharge the hot air in the cavity and reducing the difficulty of forming the exhaust hole 214 .

[0120] Of course, in some other embodiments, the exhaust hole 214 may also be disposed at the bottom of the housing 210 or on the peripheral wall of the housing 210 .

[0121] In some embodiments, the exhaust hole 214 is a threaded hole, so that the exhaust hole 214 of the present application can serve as both an exhaust port of the linear motor 1000 and a tooling hole, which is mainly used to fix a tooling fixture to facilitate the installation of the stator assembly 100 and reduce the difficulty of installing the stator assembly 100.

[0122] Optionally, as shown in FIG9 , a plurality of exhaust holes 214 are provided on the top of the housing 210. The plurality of exhaust holes 214 can ensure that the air with a higher temperature in the cavity can be effectively discharged, and can also increase the fitting strength between the housing 210 and the fixture, so as to facilitate the installation of the stator assembly 100 and reduce the difficulty of installing the stator assembly 100.

[0123] In the description of the present application, unless otherwise specified, “plurality” means two or more.

[0124] It should be noted that the number, size, and position of the exhaust holes 214 can be changed according to scene requirements, and this application does not impose any specific restrictions.

[0125] In some embodiments, as shown in Figures 2 and 8, the linear motor 1000 also includes a first limit member 810 and a second limit member 820. The first limit member 810 is arranged on the center rod 120 and extends into the outer shell 210 through the insertion port 211. The second limit member 820 is arranged on the bottom wall of the outer shell 210. The first limit member 810 and the second limit member 820 cooperate to limit the maximum movement position of the mover assembly 200, and can effectively reduce the impact force when the mover assembly 200 contacts the stator assembly 100, thereby avoiding rigid contact between the stator assembly 100 and the mover assembly 200, thereby extending the service life of the linear motor 1000.

[0126] Optionally, the first limit member 810 and the second limit member 820 are elastic members, so that during the movement of the mover assembly 200, rigid contact between the mover assembly 200 and the stator assembly 100 can be effectively avoided, thereby extending the service life of the linear motor 1000.

[0127] Optionally, the first limiting member 810 and the second limiting member 820 are rubber blocks, springs or silicone blocks.

[0128] It is understandable that when the outer side of the end of the housing 210 contacts the support seat 110, the second limiting member 820 contacts the center rod 120 or the coil on the center rod 120, thereby achieving double limiting. Alternatively, when the second limiting member 820 contacts the coil on the center rod 120, the mover assembly 200 reaches the upper limit position, at which point the outer side of the end of the housing 210 of the mover assembly 200 is spaced apart from or in contact with the support seat 110. In other embodiments, the second limiting member 820 may be omitted. At this time, when the mover assembly 200 reaches the upper limit position, the outer side of the end of the housing 210 of the mover assembly 200 contacts the support seat 110.

[0129] The suspension system 2000 according to an embodiment of the present application will be described below with reference to the accompanying drawings.

[0130] As shown in FIG10 , a suspension system 2000 according to an embodiment of the present application includes: a linear motor 1000 , a stator assembly 100 and a mover assembly 200 , one of which is connected to the wheel end, and the other is connected to the vehicle body end.

[0131] The linear motor 1000 is the aforementioned linear motor 1000 , and the specific structure of the linear motor 1000 is not described in detail here.

[0132] As can be seen from the above structure, the suspension system 2000 of the embodiment of the present application, by adopting the aforementioned linear motor 1000, can effectively reduce the occupied space of the suspension system 2000 or expand the applicable scope of the suspension system 2000.

[0133] In some embodiments, the stator assembly 100 is connected to the vehicle body end through the tower top 112 to achieve a fixed connection between the stator assembly 100 and the vehicle body end. A connecting piece is provided on the mover assembly 200, and the mover assembly 200 is connected to the wheel end through the connecting piece to achieve a fixed connection between the mover assembly 200 and the wheel end, thereby achieving the installation of the linear motor 1000 between the wheel end and the vehicle body end of the vehicle 3000. In this way, during the driving process of the vehicle 3000, the stator assembly 100 and the mover assembly 200 can be used to cooperate to transmit the force and torque acting between the wheel and the vehicle body, reducing the impact load transmitted to the vehicle body by the road surface, and at the same time isolating the noise input by the road surface and tires to ensure the comfort of the vehicle 3000 and enhance the driving experience.

[0134] The vehicle 3000 of an embodiment of the present application is described below with reference to the accompanying drawings.

[0135] As shown in FIG. 10 , a vehicle 3000 according to an embodiment of the present application includes: a suspension system 2000 .

[0136] The suspension system 2000 is the aforementioned suspension system 2000 , and the specific structure of the suspension system 2000 is not described in detail here.

[0137] As can be seen from the above structure, the vehicle 3000 of the embodiment of the present application adopts the aforementioned suspension system 2000 to effectively improve the smoothness of the vehicle 3000 and ensure the driving experience.

[0138] In the description of this application, it should be noted that, unless otherwise specified or limited, the terms "installation" and "connection" should be understood broadly. For example, they can refer to fixed connection, detachable connection, or integral connection; they can refer to mechanical connection or electrical connection. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0139] Three exhaust holes 214 are shown in Figure 9 for illustrative purposes, but after reading the above technical solution, ordinary technicians can obviously understand that the solution can be applied to the technical solution of one, two, four or more exhaust holes 214, which also falls within the scope of protection of this application.

[0140] The linear motor 1000 , the suspension system 2000 , and other components of the vehicle 3000 according to the embodiment of the present application are well known to those skilled in the art and will not be described in detail here.

[0141] Throughout this specification, references to terms such as "embodiment" and "example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0142] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A linear motor, wherein, Comprising: A stator assembly, the stator assembly including a support base and a central rod, the support base being provided on the central rod, the support base being adapted to be mounted to a vehicle; A rotor assembly, the rotor assembly including a housing, the housing being movably engaged with the central rod, a recess being formed on the support base and recessed away from the rotor assembly, the recess being for avoiding a part of the rotor assembly.

2. The linear motor according to claim 1, wherein, The housing is provided with an insertion opening and a protrusion provided around the insertion opening, the central rod passing through the insertion opening and extending into the housing, the recess including a first groove, the protrusion being insertable into the first groove.

3. The linear motor according to claim 2, wherein, The protrusion is provided at an end of the housing and extends in a direction towards the support base, the recess further including a second groove, the second groove being provided on a side of the first groove facing the rotor assembly and communicating with the first groove, the second groove being for avoiding the end of the housing.

4. The linear motor according to claim 2 or 3, wherein, Further included is a guide bearing, the guide bearing being provided in the protrusion, the central rod being slidably engaged with the guide bearing.

5. The linear motor according to any one of claims 1-4, wherein, Further included is a sensor assembly, the sensor assembly being for detecting the moving position of the rotor assembly.

6. The linear motor according to claim 5, wherein, The sensor assembly includes a detecting member and a detected member, one of the detecting member and the detected member being provided on the central rod and the other being provided on the housing, the detecting member and the detected member cooperating to detect the moving position of the rotor assembly.

7. The linear motor according to claim 6, wherein, The detecting member is provided on the housing and faces the recess, the recess being for avoiding the detecting member.

8. The linear motor according to claim 6 or 7, wherein, The housing is provided with an insertion opening and a protrusion provided around the insertion opening, the central rod passing through the insertion opening and extending into the housing, the detecting member being provided on the protrusion.

9. The linear motor according to any one of claims 6-8, wherein, The sensor assembly further includes a wire, the wire being electrically connected to the detecting member, the housing being provided with a lead groove for guiding the routing of the wire.

10. The linear motor according to any one of claims 1-9, wherein, Further included is a protective sleeve, the protective sleeve being provided on the outer periphery of the rotor assembly and located between the rotor assembly and the support base.

11. The linear motor according to claim 10, wherein, Both ends of the protective sleeve are fixedly connected to the housing and the support base respectively.

12. The linear motor according to claim 10 or 11, wherein, Both ends of the protective sleeve are provided with limiting grooves, the housing and the support base being respectively engaged with the limiting grooves.

13. The linear motor according to any one of claims 1-12, wherein, Further included is a lower tray, the lower tray being provided on the outer peripheral wall of the housing, a placement space for placing a damping spring being defined between the support base and the lower tray.

14. The linear motor according to any one of claims 1-13, wherein, A closed cavity is defined inside the housing, the central rod extending into the cavity, the cavity being provided with an exhaust hole.

15. The linear motor according to claim 14, wherein, The exhaust hole is provided at the top of the housing.

16. The linear motor according to claim 14 or 15, wherein, The exhaust hole is a threaded hole.

17. A suspension system, wherein, Including a linear motor according to any one of claims 1-16, one of the stator assembly and the rotor assembly being connected to the wheel end and the other being connected to the vehicle body end.

18. A vehicle, wherein, Including a suspension system according to claim 17.

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