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), a rotor assembly (200), a guide protrusion (400), and a first guide bearing (700). One of the rotor assembly and the stator assembly is provided with a mounting cavity (211), and the other thereof is provided with a first guide column (120), the mounting cavity being provided with an end cover (212) and the guide protrusion; the guide protrusion is provided with an opening, the first guide column extending into the mounting cavity by means of passing through the opening; and the first guide bearing is provided at the opening, the first guide column being in sliding fit with the guide protrusion by means of the first guide bearing.

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 2023118684885 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, in which the guide member can effectively guide the linear motor when it is in motion, so as to improve the working performance of the linear motor, and solve the technical problem in the related art that the working performance of the linear motor is affected by the poor guiding performance of the guide member.

[0006] According to an embodiment of the present application, the linear motor includes: a stator assembly; a mover assembly, one of the mover assembly and the stator assembly is provided with a mounting cavity, and the other is provided with a first guide column, the mounting cavity has an end cover and a guide protrusion provided on the end cover, the thickness of the guide protrusion is greater than the thickness of the end cover, the guide protrusion has an opening connected to the mounting cavity, and the first guide column extends into the mounting cavity through the opening; a first guide bearing, at least part of the structure of the first guide bearing is provided in the opening, and the first guide column slides with the guide protrusion through the first guide bearing.

[0007] According to the linear motor of the embodiment of the present application, by providing a guide protrusion having a thickness greater than that of the end cover on the end cover of the mounting cavity, providing an opening connected to the mounting cavity on the guide protrusion, and arranging the first guide bearing in the opening, while achieving the purpose of guiding the relative movement of the stator assembly and the mover assembly by the guide protrusion and the first guide bearing, the first guide bearing can also have a certain extension length to ensure the guiding performance of the first guide bearing and avoid excessive increase in the thickness of the end cover of the mounting cavity due to the provision of the first guide bearing, thereby reducing the manufacturing difficulty and manufacturing cost of the mounting cavity and the axial size of the linear motor (the axial direction in the present application is the axial direction of the first guide column, which is also the direction of relative sliding between the first guide column and the mounting cavity), thereby reducing the volume of the linear motor. When the linear motor of the present application is used in a suspension system, the axial extension size of the end cover is reduced, and the axial space in the suspension system can be more effectively utilized.

[0008] In some embodiments of the present application, the first guide bearing is arranged on the guide protrusion, and the first guide column is slidingly engaged with the first guide bearing.

[0009] In some embodiments of the present application, the guide protrusion extends in a direction away from the installation cavity.

[0010] In some embodiments of the present application, the inner peripheral wall of the guide protrusion is provided with a groove for placing the first guide bearing.

[0011] In some embodiments of the present application, the linear motor further includes a limiter, which cooperates with at least one of the first guide bearing and the first guide column to limit the first guide bearing from rotating relative to the first guide column.

[0012] In some embodiments of the present application, the outer peripheral wall of the first guide column is provided with a first anti-rotation groove, and the limiting member includes a limiting protrusion, which is limitedly engaged with the first guide bearing, and the limiting protrusion extends into the first anti-rotation groove and slides with the first anti-rotation groove.

[0013] In some embodiments of the present application, the first guide bearing is provided with a mounting groove, and the limiting protrusion is fixed to the mounting groove.

[0014] In some embodiments of the present application, the first guide bearing is provided with a second anti-rotation groove, and the second anti-rotation groove is arranged corresponding to the first anti-rotation groove, so that the limiting protrusion is passed through the second anti-rotation groove.

[0015] In some embodiments of the present application, the guide protrusion is provided with a third anti-rotation groove, and the third anti-rotation groove and the second anti-rotation groove are both arranged corresponding to the first anti-rotation groove, so that the limiting protrusion is passed through the second anti-rotation groove and the third anti-rotation groove.

[0016] In some embodiments of the present application, the linear motor further includes a sensor assembly, the sensor assembly including a reading head and a reference part, one of the reference part and the reading head is arranged on the guide protrusion, and the other of the reference part and the reading head is arranged on the other of the mover assembly and the stator assembly, and the reading head and the reference part cooperate to detect the moving position of the mover assembly.

[0017] In some embodiments of the present application, the reading head is arranged on the guide protrusion, and the reference member is arranged on the first guide column.

[0018] In some embodiments of the present application, in the extension direction of the first guide column, the reading head and the first guide bearing are spaced apart.

[0019] In some embodiments of the present application, in the extension direction of the first guide column, at least part of the reading head is overlapped with the first guide bearing, the first guide bearing is provided with an avoidance groove, and the reading head is arranged corresponding to the avoidance groove so that the reading head is arranged corresponding to the reference part through the avoidance groove.

[0020] In some embodiments of the present application, the stator assembly includes the first guide column, and the stator assembly also includes a mounting member for mounting to a vehicle, the first guide column is mounted to the mounting member, and the mounting member is provided with an avoidance space for avoiding the guide protrusion.

[0021] In some embodiments of the present application, the linear motor includes an electromagnetic coil and a magnet, one of the electromagnetic coil and the magnet is arranged on the stator assembly, and the other of the electromagnetic coil and the magnet is arranged on the mover assembly, and the electromagnetic coil and the magnet cooperate to enable the mover assembly to move back and forth relative to the stator assembly.

[0022] In some embodiments of the present application, the electromagnetic coil is disposed on the first guide post, and the magnet is disposed in the mounting cavity.

[0023] In some embodiments of the present application, a guide groove is provided in the first guide column, a second guide column is provided in the installation cavity, and the second guide column extends into the guide groove and slides with the guide groove.

[0024] In some embodiments of the present application, the linear motor further includes a second guide bearing, which is disposed between the second guide column and the guide groove.

[0025] In some embodiments of the present application, the second guide column is detachably disposed in the installation cavity.

[0026] The suspension system according to the embodiment of the present application includes the aforementioned linear motor.

[0027] According to the suspension system of the embodiment of the present application, the aforementioned linear motor is adopted to improve the working performance of the suspension system.

[0028] A vehicle according to an embodiment of the present application includes the aforementioned suspension system.

[0029] According to the vehicle of the embodiment of the present application, by adopting the aforementioned suspension system, the smoothness of the vehicle's travel can be effectively improved, ensuring a good driving experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] 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:

[0031] FIG1 is a cross-sectional view of a linear motor according to some embodiments of the present application.

[0032] FIG2 is a partial enlarged view of area I in FIG1.

[0033] FIG3 is a partial enlarged view of area II in FIG1 .

[0034] FIG4 is a cross-sectional view along line AA of FIG1 .

[0035] FIG5 is a schematic diagram of a first guide bearing according to some embodiments of the present application.

[0036] FIG6 is a schematic diagram of a vehicle according to some embodiments of the present application.

[0037] Figure markings: 1000, linear motor; 100, stator assembly; 110, mounting part; 111, avoidance space; 120, first guide column; 121, first anti-rotation groove; 122, guide groove; 200, mover assembly; 210, housing; 211, mounting cavity; 2111, opening; 212, end cover; 220, second guide column; 300, sensor assembly; 310, reading head; 320, reference part; 400, guide protrusion; 500, lower tray; 600, shock-absorbing spring; 700, first guide bearing; 710, second anti-rotation groove; 720, avoidance groove; 800, second guide bearing; 2000, suspension system; 3000, vehicle. DETAILED DESCRIPTION

[0038] 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.

[0039] 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.

[0040] The linear motor 1000 according to an embodiment of the present application will be described below with reference to the accompanying drawings.

[0041] In the related art, when the suspension system is in operation, relative motion occurs between the mover assembly and the stator assembly of the linear motor, but the existing linear motor occupies a large space in the suspension system.

[0042] In order to solve the above problems, as shown in Figures 1 and 2 , a linear motor 1000 according to an embodiment of the present application includes: a stator assembly 100, a mover assembly 200 and a first guide bearing 700.

[0043] As shown in Figures 1 and 2 , one of the mover assembly 200 and the stator assembly 100 is provided with a mounting cavity 211, and the other is provided with a first guide post 120. The mounting cavity 211 has an end cap 212 and a guide protrusion 400 provided on the end cap 212. The thickness of the guide protrusion 400 is greater than that of the end cap 212. The guide protrusion 400 has an opening 2111 communicating with the mounting cavity 211, and the first guide post 120 extends into the mounting cavity 211 through the opening 2111. This achieves a mating connection between the mover assembly 200 and the stator assembly 100, thereby facilitating the use of the mover assembly 200 and the stator assembly 100 to jointly cushion the impact of the road surface on the vehicle 3000 during driving, thereby improving the ride comfort of the vehicle 3000.

[0044] In some embodiments, the first guide column 120 extends into the installation cavity 211 through the opening 2111 and can move relative to the installation cavity 211 to achieve the movement and coordination of the mover assembly 200 and the stator assembly 100, thereby facilitating the use of the linear motor 1000 to buffer the impact of the vehicle 3000 from the road during driving, improving the smoothness of the vehicle 3000, thereby ensuring the comfort of the vehicle 3000 and enhancing the user experience.

[0045] In a specific example, as shown in Figures 1 and 2, the mover assembly 200 is provided with an installation cavity 211, and a guide protrusion 400 with an opening 2111 is provided on the end cover 212 at one end of the installation cavity 211. The opening 2111 is connected to the installation cavity 211 so that the installation cavity 211 has an opening 2111, and the stator assembly 100 is provided with a first guide column 120.

[0046] As shown in Figures 1 and 2 , at least a portion of the first guide bearing 700 is disposed within the opening 2111, and the first guide column 120 is slidably engaged with the guide protrusion 400 via the first guide bearing 700. In other words, the first guide bearing 700 is disposed within the guide protrusion 400. Thus, when the first guide column 120 extends into the mounting cavity 211 through the opening 2111, the first guide bearing 700 can be disposed around the outer periphery of the first guide column 120. Furthermore, the first guide column 120 slidably engages with the guide protrusion 400 via the first guide bearing 700, thereby enabling relative movement between the mover assembly 200 and the stator assembly 100, thereby ensuring the operating performance of the linear motor 1000.

[0047] It should be noted that the first guide bearing 700 is arranged between the guide protrusion 400 and the first guide column 120, and the first guide bearing 700 is arranged around the outer periphery of the first guide column 120. At this time, during the relative movement of the mover assembly 200 and the stator assembly 100, it plays a guiding role to avoid the relative position of the first guide column 120 and the guide protrusion 400 from being offset, thereby limiting the moving path of the mover assembly 200 and avoiding the mover assembly 200 from being offset during the movement, 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, it can be ensured that 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. It should also be noted that the thickness of the guide protrusion 400 mentioned above can be understood as the length of the guide protrusion 400 extending along the up and down directions of Figure 1. Correspondingly, the thickness of the end cover 212 can be understood as the length of the end cover 212 extending along the up and down directions of Figure 1. That is to say, the length of the guide protrusion 400 extending along the up and down directions is greater than the length of the end cover 212 extending along the up and down directions. In this way, when the first guide bearing 700 is arranged in the guide protrusion 400, since the guide protrusion 400 has a certain protrusion length, it can be ensured that the first guide bearing 700 has a certain extension length, thereby ensuring the guiding quality, and improving the structural strength of the first guide bearing 700, avoiding the deformation of the first guide bearing 700 due to wear, and avoiding the deformation and skewness of the first guide bearing 700, ensuring the guiding quality, and extending the service life of the first guide bearing 700.

[0048] At the same time, due to the provision of the guide protrusion 400, the thickness of the end cap 212 of the mounting cavity 211 can be adaptively reduced, thereby reducing the difficulty of molding the mounting cavity 211 and saving the manufacturing cost of the mounting cavity 211. It can also avoid reducing the cavity size of the mounting cavity 211 due to the provision of a thicker end cap 212, thereby ensuring that an electromagnetic component of a certain size can be installed in the mounting cavity 211, so that the linear motor 1000 can obtain better electromagnetic thrust performance and ensure the operating performance of the linear motor 1000. When the linear motor 1000 of the present application is used in the suspension system 2000, due to the reduced axial extension of the end cap 212, the large space occupied by the provision of a thicker end cap 212 can be avoided, and the axial space in the suspension system 2000 can be more effectively utilized.

[0049] That is to say, the present application provides a guide protrusion 400 with an opening 2111 at one end of the installation cavity 211. While achieving the guiding cooperation between the mover assembly 200 and the stator assembly 100, it can also ensure the guiding quality of the first guide bearing 700, reduce the thickness of the end cover 212 of the installation cavity 211, avoid increasing the thickness of the end cover 212 of the installation cavity 211 due to the provision of the first guide bearing 700, and thus avoid increasing the thickness of the outer shell 210 of the mover assembly 200 due to the provision of the first guide bearing 700, thereby achieving the reduction of the thickness and weight of the outer shell 210 of the mover assembly 200 and reducing the manufacturing difficulty of the mover assembly 200.

[0050] It can be seen from the above structure that the linear motor 1000 of the embodiment of the present application is provided with a guide protrusion 400 with an opening 2111 at one end of the mounting cavity 211, and the first guide bearing 700 is provided in the guide protrusion 400, and the first guide bearing 700 is slidably matched with the first guide column 120 so as to utilize the first guide bearing 700 to guide the movement of the first guide column 120, thereby avoiding the displacement of the mover assembly 200 during the movement, ensuring the accuracy of the movement of the mover assembly 200, and improving the working performance of the linear motor 1000.

[0051] At the same time, since the guide protrusion 400 has a certain protrusion thickness, the first guide bearing 700 is set in the guide protrusion 400. On the first hand, the extension length of the first guide bearing 700 can be guaranteed, thereby improving the guiding quality of the first guide bearing 700. On the second hand, the structural strength of the first guide bearing 700 can be improved, the service life of the first guide bearing 700 can be extended, and the first guide bearing 700 can be avoided from deformation, offset, etc., thereby ensuring the guiding performance of the first guide bearing 700. On the third hand, the thickness of the end cover 212 of the mounting cavity 211 can be avoided from increasing due to the setting of the first guide bearing 700, so as to reduce the molding difficulty of the mounting cavity 211 and save the manufacturing cost of the mounting cavity 211, and at the same time avoid reducing the cavity size of the mounting cavity 211 due to the setting of a thicker end cover 212. In this way, more valuable axial space can be made for the design of the electromagnetic component in the mounting cavity 211, so that the linear motor 1000 can obtain better electromagnetic thrust performance to ensure the working performance of the linear motor 1000.

[0052] It can be understood that compared with the related art, the linear motor 1000 of the present application can not only guide the relative movement of the stator assembly 100 and the mover assembly 200, but also ensure the quality of the guidance, and avoid excessively increasing the thickness of the end cover 212 of the mounting cavity 211 due to the setting of the guide member, thereby ensuring the working performance of the linear motor 1000.

[0053] In some embodiments, the first guide bearing 700 is disposed on the guide protrusion 400 , and the first guide column 120 is slidably engaged with the first guide bearing 700 .

[0054] In some embodiments, the end cap 212 is integrally formed with the guide protrusion 400. That is, the guide protrusion 400 is integrally formed on the end cap 212, so that the end cap 212 can be used to support the guide protrusion 400, thereby improving the positional stability of the guide protrusion 400 and ensuring the working performance of the guide protrusion 400. At the same time, it can also reduce the difficulty of molding the end cap 212 and the guide protrusion 400 and ensure the quality of the connection between the end cap 212 and the guide protrusion 400.

[0055] Optionally, as shown in FIG1 , the guide protrusion 400 is provided in the radial middle portion of the end cap 212. This ensures that when the first guide post 120 extends through the opening 2111 into the mounting cavity 211, the first guide post 120 fits in the radial middle portion of the mounting cavity 211, preventing the first guide post 120 from contacting the sidewalls of the mounting cavity 211. This ensures that the first guide post 120 can move relative to the mounting cavity 211, thereby maintaining the operating performance of the linear motor 1000.

[0056] In some embodiments, as shown in Figure 1, the mover assembly 200 includes a shell 210, and a mounting cavity 211 is formed in the shell 210. A guide protrusion 400 with an opening 2111 is provided at one end of the shell 210, and the opening 2111 is connected to the mounting cavity 211. The stator assembly 100 is provided with a first guide column 120, and the first guide column 120 extends into the mounting cavity 211 and is movably matched with the shell 210 to achieve movably matched motion of the mover assembly 200 and the stator assembly 100.

[0057] In some embodiments, the linear motor 1000 includes an electromagnetic coil and a magnet. One of the mover assembly 200 and the stator assembly 100 is provided with a magnet, and the other is provided with an electromagnetic coil suitable for energizing. The magnet and the electromagnetic coil cooperate to achieve coupling between the stator assembly 100 and the mover assembly 200, so that the mover assembly 200 can move back and forth relative to the stator assembly 100 to ensure the working performance of the linear motor 1000.

[0058] It can also be understood here that the linear motor 1000 is used to drive the mover assembly 200 to move back and forth relative to the stator assembly 100, 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.

[0059] In some embodiments, the stator assembly 100 includes an electromagnetic coil, which is mounted on a first guide post 120. The mover assembly 200 includes a magnet, which is disposed within and on the inner wall of the mounting cavity 211. The electromagnetic coil and the magnet cooperate to enable reciprocating movement of the mover assembly 200. In other words, the first guide post 120 is configured as a fixture for the electromagnetic coil to support it and improve its positional stability, thereby facilitating the use of the electromagnetic coil and magnet to control the reciprocating movement of the mover assembly 200 relative to the stator assembly 100. The magnet can be a permanent magnet or an electromagnet.

[0060] In a specific example, the electromagnetic coil is energized, and the electromagnetic coil generates a magnetic field after being energized, so that the magnet produces linear motion. At this time, the magnet and the electromagnetic coil cooperate to achieve the coupling cooperation between the stator assembly 100 and the mover assembly 200 (the cooperation between the 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 relative to the stator assembly 100 to achieve the purpose of vibration reduction.

[0061] 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, so that the linear motor 1000 can be installed between the wheel end and the body end of the vehicle 3000. In this way, when the wheel moves up and down relative to the body, the mover assembly 200 moves relative to the stator assembly 100, and 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 body, reducing the impact load transmitted to the 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.

[0062] 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, which will not be elaborated here.

[0063] In some embodiments, as shown in FIG1 and FIG2 , the guide protrusion 400 extends away from the mounting cavity 211. This ensures that the thickness of the guide protrusion 400 is greater than the thickness of the end cap 212 while also preventing the guide protrusion 400 and the first guide bearing 700 from occupying space within the mounting cavity 211. This frees up valuable axial space for the electromagnetic assembly within the mounting cavity 211, thereby enabling the linear motor 1000 to achieve better electromagnetic thrust performance and ensure the operating performance of the linear motor 1000.

[0064] That is to say, the guide protrusion 400 and the first guide bearing 700 of the present application not only have high guiding performance, but are also not easy to deform, wear, or tilt, and will not occupy the space in the installation cavity 211.

[0065] In other embodiments, the guide protrusion 400 can also extend in a direction close to the mounting cavity 211; that is, the guide protrusion 400 is located on the side of the end cover 212 away from the mounting cavity 211, or the guide protrusion 400 extends from the end cover 212 to the side close to the mounting cavity 211 into the mounting cavity 211; or, a portion of the guide protrusion 400 extends from the end cover 212 to the side close to the mounting cavity 211 into the mounting cavity 211, and a portion of the guide protrusion 400 extends from the end cover 212 to the side away from the mounting cavity 211.

[0066] In some embodiments, the inner circumferential wall of the guide protrusion 400 is provided with a groove for accommodating the first guide bearing 700. The first guide bearing 700 is placed in the groove to achieve the first guide bearing 700 being disposed within the guide protrusion 400 and arranged around the opening 2111, thereby enabling the first guide bearing 700 to be disposed around the outer circumference of the first guide column 120. The first guide bearing 700 is conveniently used to limit the relative movement of the first guide column 120, thereby providing a guiding function and preventing the mover assembly 200 from deflecting during movement.

[0067] At the same time, by providing a groove on the inner circumferential wall of the guide protrusion 400 , the difficulty of matching the guide protrusion 400 with the first guide bearing 700 can be reduced, thereby ensuring that the first guide bearing 700 can be effectively arranged in the guide protrusion 400 .

[0068] In some embodiments, the first guide bearing 700 is fixedly connected to the inner circumferential wall of the guide protrusion 400 to achieve a fixed connection between the first guide bearing 700 and the guide protrusion 400. This makes it easier to use the guide protrusion 400 to support the first guide bearing 700, thereby improving the positional stability of the first guide bearing 700 and ensuring the guiding performance of the first guide bearing 700.

[0069] 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.

[0070] In some embodiments, the linear motor 1000 further includes a stopper (not shown), which cooperates with at least one of the first guide bearing 700 and the first guide post 120 to limit the rotation of the first guide bearing 700 relative to the first guide post 120. This prevents relative rotation of the mover assembly 200 and the stator assembly 100, thereby constraining the relative motion of the mover assembly 200 and the stator assembly 100, so that the mover assembly 200 only moves axially relative to the stator assembly 100, thereby ensuring the operating performance of the linear motor 1000.

[0071] In some embodiments, as shown in Figure 4, the outer wall of the first guide column 120 is provided with a first anti-rotation groove 121, and the limiting member includes a limiting protrusion, which is limitedly engaged with the first guide bearing 700, and the limiting protrusion extends into the first anti-rotation groove 121 and slides with the first anti-rotation groove 121. Among them, the limiting cooperation mentioned here can be understood as the limiting protrusion and the first guide bearing 700 limiting each other, so that in the process of the limiting protrusion changing position, the first guide bearing 700 changes position synchronously; correspondingly, in the process of the first guide bearing 700 changing position, the limiting protrusion also changes position synchronously, so that when the limiting protrusion is extended into the first anti-rotation groove 121 and slidingly cooperates with the first anti-rotation groove 121, the sliding cooperation of the first guide bearing 700 and the first guide column 120 can be achieved, and the first guide bearing 700 is prevented from rotating relative to the first guide column 120, thereby achieving the purpose of using the limiting member to limit the rotation of the first guide bearing 700 relative to the first guide column 120, thereby preventing the mover assembly 200 and the stator assembly 100 from rotating relative to each other.

[0072] In some embodiments, the limiting protrusion is a limiting column or a limiting pin, the limiting pin is limitedly engaged with the first guide bearing 700, and the limiting column extends toward the direction close to the first guide column 120 and extends into the first anti-rotation groove 121, so as to utilize the limiting member to achieve the limiting engagement of the first guide bearing 700 and the first guide column 120, thereby preventing the first guide bearing 700 from rotating relative to the first guide column 120, thereby ensuring the position stability of the mover assembly 200 and the stator assembly 100 during relative movement.

[0073] In this solution, a guide protrusion 400 is set on the end cover 212, and the space of the guide protrusion 400 is used to realize the arrangement of the guide member (first guide bearing 700), and also realize the arrangement of the anti-rotation structure (first anti-rotation groove 121), thereby cleverly utilizing the space, avoiding occupying other space of the linear motor 1000, and improving space utilization.

[0074] In some embodiments, the first anti-rotation groove 121 extends axially along the first guide column 120. In this way, when the limiting protrusion is extended into the first anti-rotation groove 121 and slidingly engaged with the first anti-rotation groove 121, the movable assembly 200 can be moved axially along the stator assembly 100 and the movable assembly 200 is prevented from rotating circumferentially along the stator assembly 100, thereby achieving the purpose of limiting the rotation of the movable assembly 200, so that the movable assembly 200 only produces axial movement relative to the stator assembly 100.

[0075] In some embodiments, the first guide bearing 700 is provided with a mounting groove (not shown), and a limiting protrusion is fixed to the mounting groove. This ensures a fixed connection between the limiting protrusion and the first guide bearing 700, thereby achieving a limiting engagement between the limiting protrusion and the first guide bearing 700. Thus, when the limiting protrusion is inserted into the first anti-rotation groove 121 and slidably engages with the first anti-rotation groove 121, the limiting protrusion and the first anti-rotation groove 121 cooperate to restrict the first guide bearing 700 from rotating relative to the first guide column 120, thereby ensuring that the mover assembly 200 only moves axially relative to the stator assembly 100, thereby ensuring the operating performance of the linear motor 1000.

[0076] At the same time, by setting an installation groove on the first guide bearing 700, the difficulty of matching the limiting protrusion with the first guide bearing 700 can be reduced, so that the limiting protrusion can be effectively set on the first guide bearing 700 to achieve limiting matching between the limiting protrusion and the first guide bearing 700.

[0077] In some embodiments, as shown in FIG5 , the first guide bearing 700 is provided with a second anti-rotation groove 710, and a limiting protrusion is provided on the guide protrusion 400 and extends through the second anti-rotation groove 710. That is, the limiting protrusion is not limited to being fixedly connected to the first guide bearing 700. The limiting protrusion may also be provided on the guide protrusion 400, with the guide protrusion 400 supporting the limiting protrusion to improve the positional stability of the limiting protrusion. When the limiting protrusion is provided on the guide protrusion 400, the first guide bearing 700 is provided with the second anti-rotation groove 710. The second anti-rotation groove 710 is correspondingly arranged with the first anti-rotation groove 121, so that the limiting protrusion can pass through the second anti-rotation groove 710 and extend into the first anti-rotation groove 121. In this way, the limiting protrusion can also be used to limit the relative position of the first guide bearing 700 and the first guide column 120, preventing the first guide bearing 700 from rotating relative to the first guide column 120, thereby preventing the mover assembly 200 and the stator assembly 100 from rotating relative to each other.

[0078] In some embodiments, a third anti-rotation groove is provided on the guide protrusion 400, and the third anti-rotation groove and the second anti-rotation groove 710 are both provided corresponding to the first anti-rotation groove 121, so that the limiting protrusion can pass through the third anti-rotation groove and the second anti-rotation groove 710 and extend into the first anti-rotation groove 121. In this way, the limiting protrusion can be provided on the outside of the guide protrusion 400 away from the first guide column 120 and connected to the guide protrusion 400. In this way, the limiting protrusion can also be used to limit the relative rotation of the first guide column 120 and the guide protrusion 400.

[0079] 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.

[0080] In some embodiments, a mating groove is provided on the guide protrusion 400, and the limiting protrusion is fixed to the mating groove and extends in a direction close to the first guide column 120. In this way, while the limiting protrusion is provided on the guide protrusion 400, the end of the limiting protrusion facing the first guide column 120 can pass through the second anti-rotation groove 710 on the first guide bearing 700 and engage in the first anti-rotation groove 121, thereby facilitating the use of the limiting protrusion to limit the rotation of the first guide bearing 700 relative to the first guide column 120.

[0081] Optionally, in combination with Figures 4 and 5, a plurality of mating grooves are provided on the guide protrusion 400, a plurality of second anti-rotation grooves 710 are provided on the first guide bearing 700, and a plurality of first anti-rotation grooves 121 are provided on the first guide column 120. The plurality of first anti-rotation grooves 121, the plurality of mating grooves and the plurality of second anti-rotation grooves 710 correspond one to one, so that a limiting protrusion extends into each first anti-rotation groove 121. In this way, the plurality of limiting protrusions can be used to cooperate to limit the rotation of the first guide bearing 700 relative to the first guide column 120, so that the mover assembly 200 can only produce axial movement relative to the stator assembly 100, thereby ensuring the working performance of the linear motor 1000.

[0082] In the description of the present application, unless otherwise specified, “plurality” means two or more.

[0083] In some embodiments, as shown in conjunction with FIG1 , FIG2 and FIG4 , the linear motor 1000 further includes a sensor assembly 300, which includes a reading head 310 and a reference member 320. One of the reading head 310 and the reference member 320 is disposed on the guide protrusion 400, and the other of the reading head 310 and the reference member 320 is disposed on the other of the mover assembly 200 and the stator assembly 100. The reading head 310 and the reference member 320 cooperate to detect the movement position of the mover assembly 200. In this way, the reading head 310 and the reference member 320 can be disposed on the mover assembly 200 and the stator assembly 100, respectively, so that the reading head 310 and the reference member 320 can cooperate to detect the movement position of the mover assembly 200. This allows the position of the mover assembly 200 to be accurately determined, facilitates the control of the movement of the mover assembly 200, ensures the position accuracy of the mover assembly 200 after movement, and improves the working performance of the linear motor 1000.

[0084] In some embodiments, the reference member 320 is disposed on the first guide column 120 , and the reading head 310 is disposed on the guide protrusion 400 .

[0085] In other embodiments, the reference member 320 may be disposed on the guide protrusion 400 , and the reading head 310 may be disposed on the first guide column 120 .

[0086] At the same time, using the reading head 310 and the reference member 320 to cooperate in detecting the moving position of the mover assembly 200 can also reduce the difficulty of position detection of the mover assembly 200 and ensure the accuracy of position detection of the mover assembly 200.

[0087] That is to say, the linear motor 1000 of the present application ensures the control accuracy of the moving position of the mover assembly 200 by providing the sensor component 300, thereby avoiding the technical problem of control accuracy defects.

[0088] In some embodiments, the reading head 310 is disposed on the guide protrusion 400 and is disposed corresponding to the reference member 320 , so that the moving position of the mover assembly 200 can be detected by using the reading head 310 and the reference member 320 in cooperation.

[0089] This solution provides a guide protrusion 400 on the end cap 212. The space of the guide protrusion 400 is used not only to arrange the guide member (first guide bearing 700) and the anti-rotation structure (first anti-rotation groove 121), but also to arrange the sensor assembly 300 using the guide protrusion 400. This cleverly utilizes the space, avoids occupying other space of the linear motor 1000, and improves space utilization. In addition, when the sensor assembly 300 of the present application is a sensor that generates a magnetic field, such as a Hall sensor, the guide protrusion 400 extends from the end cap 212 in a direction away from the mounting cavity 211, so that the guide protrusion 400 is located outside the end cap 212. Part of the structure of the sensor assembly 300 is arranged on the guide protrusion 400, thereby avoiding the influence of the electromagnetic coil or magnet in the mounting cavity 211 on the sensor assembly 300, thereby more conducive to the operation of the sensor assembly 300.

[0090] In some embodiments, as shown in conjunction with Figures 1, 2, and 4, the reading head 310 is disposed on the guide protrusion 400, and the reference member 320 is disposed on the first guide post 120. This allows the reading head 310 and the reference member 320 to be disposed on the mover assembly 200 and the stator assembly 100, respectively, while also allowing the reading head 310 to correspond to the reference member 320. This facilitates the use of the reading head 310 and the reference member 320 to detect the movement position of the mover assembly 200, thereby ensuring the position accuracy of the mover assembly 200 after movement.

[0091] At the same time, the reading head 310 is arranged on the guide protrusion 400 and the reference part 320 is arranged on the first guide column 120. The guide protrusion 400 can be used to support the reading head 310 and the first guide column 120 can be used to support the reference part 320, thereby improving the position stability of the reading head 310 and the reference part 320 and reducing the difficulty of fixing the reading head 310 and the reference part 320, thereby ensuring the detection accuracy of the sensor assembly 300.

[0092] It should be noted that since the present application is provided with a limit member, the limit member can also prevent the reading head 310 and the reference member 320 from positionally offset, thereby ensuring that the reading head 310 can always face the reference member 320, ensuring the detection result of the reading head 310, thereby effectively and accurately obtaining the relative position of the mover assembly 200 and the stator assembly 100.

[0093] In some embodiments, the reference member 320 is a magnetic grating embedded in the first guide column 120 , and the magnetic field signal of the magnetic grating is read by the reading head 310 fixed on the guide protrusion 400 , thereby detecting the position of the mover assembly 200 relative to the stator assembly 100 .

[0094] Optionally, a mounting portion is provided on the guide protrusion 400, and the reading head 310 is installed in the mounting portion by bolts to achieve the setting of the reading head 310 on the guide protrusion 400 and ensure the matching strength between the reading head 310 and the guide protrusion 400, so that the relative position of the reading head 310 and the guide protrusion 400 is stable.

[0095] Optionally, the reference member 320 is embedded in the surface of the first guide column 120 by bolts to ensure the matching strength between the reference member 320 and the first guide column 120, so that the relative position of the reference member 320 and the first guide column 120 is stable, thereby improving the position stability of the reference member 320.

[0096] That is to say, the guide protrusion 400 of the present application can not only be used to install the first guide bearing 700, but also to install the reading head 310 to improve the functional utilization of the guide protrusion 400.

[0097] In some embodiments, the reading head 310 is spaced apart from the first guide bearing 700 in the direction of extension of the first guide post 120 (not shown in this example figure). That is, the reading head 310 and the first guide bearing 700 are both disposed on the guide protrusion 400 and spaced apart in the direction of extension of the first guide post 120. This allows for efficient use of the space on the guide protrusion 400 and allows the reading head 310 and the first guide bearing 700 to be independent of each other, thereby ensuring the operational performance of the reading head 310 and the first guide bearing 700. For example, the reading head 310 can be located on the side of the first guide bearing 700 away from the mounting cavity 211, thereby further away from the magnetic field generated by the electromagnetic coil or magnet within the mounting cavity 211. Alternatively, the reading head 310 can be located on the side of the first guide bearing 700 closer to the mounting cavity 211.

[0098] In order to facilitate the operation of the sensor assembly 300 , the housing 210 and the first guide post 120 may be made of non-magnetic conductive materials, such as aluminum.

[0099] In some embodiments, the reading head 310 and the first guide bearing 700 are spaced apart in the protruding direction of the guide protrusion 400, so that the reading head 310 and the first guide bearing 700 are spaced apart in the extending direction of the first guide column 120, thereby realizing the rational use of the space on the guide protrusion 400, ensuring that the reading head 310 and the first guide bearing 700 can both be set on the guide protrusion 400, and making the reading head 310 and the first guide bearing 700 independent of each other.

[0100] In some embodiments, in the extension direction of the first guide column 120, at least part of the reading head 310 is overlapped with the first guide bearing 700. As shown in Figure 5, the first guide bearing 700 is provided with an avoidance groove 720, and the reading head 310 and the avoidance groove 720 are correspondingly arranged so that the reading head 310 is corresponding to the reference part 320 through the avoidance groove 720, so that the reading head 310 can read the reference part 320. That is to say, it is not limited to setting the reading head 310 and the first guide bearing 700 at intervals in the extension direction of the first guide column 120. Part of the structure of the reading head 310 or the entire structure of the reading head 310 can also be set at the same axial height position as the first guide bearing 700, so that at least part of the reading head 310 and the first guide bearing 700 are overlapped in the extension direction of the first guide column 120. In this way, under the premise that the extension length of the first guide column 120 is certain, it is possible to avoid excessively reducing the extension length of the first guide bearing 700 or increasing the extension length of the guide protrusion 400 due to the setting of the reading head 310. That is, by setting at least part of the reading head 310 and the first guide bearing 700 in the extension direction of the first guide column 120 in an overlapping manner, compared with setting the reading head 310 and the first guide bearing 700 at intervals in the extension direction of the first guide column 120, the extension length of the first guide bearing 700 can be guaranteed, thereby ensuring the guiding effect of the first guide bearing 700.

[0101] In some embodiments, the reading head 310 can also be set on the avoidance groove 720 of the first guide bearing 700. By setting the avoidance groove 720 on the first guide bearing 700, the difficulty of fixing the reading head 310 is reduced, and the position stability of the reading head 310 is improved, thereby ensuring the working performance of the reading head 310 to a certain extent.

[0102] In a specific example, an avoidance groove and two matching grooves are provided on the guide protrusion 400, and the avoidance groove and the two matching grooves are arranged at intervals along the circumference of the guide protrusion 400. The avoidance groove is used to install the reading head 310 or avoid the reading head 310, and the two matching grooves are used to install the limiting protrusions respectively. As shown in Figure 5, the first guide bearing 700 is provided with two second anti-rotation grooves 710 and an avoidance groove 720, and the outer peripheral wall of the first guide column 120 is provided with a first anti-rotation groove 121 that slides with the limiting protrusion and a reference part 320 that is installed facing the reading head 310. This design enables the first guide bearing 700 to not only play a role in reducing friction and sliding, but also has the avoidance installation of the sensor assembly 300 and the anti-rotation function of the mover assembly 200 and the stator assembly 100, fully exerting the efficient functional utilization rate in the same parts, and solving the problems of the arrangement of the sensor assembly 300 and the positioning of the mover assembly 200 and the stator assembly 100.

[0103] In some embodiments, as shown in conjunction with FIG1 and FIG2 , the stator assembly 100 includes a first guide post 120. The stator assembly 100 also includes a mounting member 110 for mounting on the vehicle 3000. The first guide post 120 is mounted on the mounting member 110. The mounting member 110 is provided with an escape space 111 for circumventing the guide protrusion 400. In other words, the first guide post 120 is formed on the stator assembly 100, and a mounting cavity 211 having an opening 2111 is formed on the mover assembly 200. The first guide post 120 extends into the mounting cavity 211 through the opening 2111 to achieve movable coordination between the mover assembly 200 and the stator assembly 100. This facilitates the use of the mover assembly 200 and the stator assembly 100 to cooperate in buffering impacts transmitted from the road surface, thereby improving the ride comfort of the vehicle 3000.

[0104] At the same time, by setting the mounting member 110, installing the first guide column 120 to the mounting member 110, and installing the mounting member 110 to the vehicle 3000, the stator assembly 100 and the vehicle 3000 are matched and connected, so as to facilitate the use of the linear motor 1000 to buffer the impact of the vehicle 3000 from the road during driving, improve the smoothness of the vehicle 3000, and reduce the difficulty of connecting the stator assembly 100 and the vehicle 3000.

[0105] Furthermore, by providing an escape space 111 on the mounting member 110 for circumventing the guide protrusion 400, when the mover assembly 200 moves toward the mounting member 110, the guide protrusion 400 can be moved into the escape space 111, thereby moving the first guide bearing 700 and the reading head 310 into the escape space 111. This prevents the travel of the mover assembly 200 from being occupied by the guide protrusion 400, thereby ensuring the travel of the mover assembly 200 and, in turn, the operating performance of the linear motor 1000. It will be appreciated that when the mover assembly 200 moves until the end cap 212 contacts the mounting member 110, the first guide bearing 700 and the reading head 310 move into the escape space 111. Thus, when the thickness of the end cap 212 is reduced, the travel of the linear motor 1000 in its application on the suspension system 2000 can be increased due to the movement of the first guide bearing 700 and the reading head 310 into the escape space 111. If the stroke of the linear motor 1000 is constant, the size of the linear motor 1000 can be reduced, thereby reducing the space occupied by the linear motor 1000 on the suspension system 2000.

[0106] It should be noted that since the mounting member 110 is provided with an avoidance space 111 for avoiding the guide protrusion 400, the extension length of the guide protrusion 400 can be adaptively increased, and the longer guide protrusion 400 can be avoided from occupying the layout space of the mounting cavity 211, so as to increase the sliding surface between the first guide column 120 and the first guide bearing 700, avoid failure of the first guide bearing 700, thereby ensuring the guiding performance of the first guide bearing 700, and making more valuable axial space for the design of the electromagnetic component in the mounting cavity 211, so that the linear motor 1000 can obtain better electromagnetic thrust performance.

[0107] In some embodiments, the first guide column 120 is mounted to the mounting member 110 via a nut to achieve a fixed connection between the first guide column 120 and the mounting member 110 .

[0108] Optionally, a rubber bushing structure is provided on the mounting member 110 to achieve a vibration isolation effect of the mounting member 110, thereby preventing the vibration of the vehicle body from being transmitted to the linear motor 1000 and ensuring the working performance of the linear motor 1000.

[0109] In some embodiments, the stator assembly 100 is connected to the vehicle body end through the mounting member 110 to achieve a fixed connection between the stator assembly 100 and the vehicle body end, thereby achieving a coordinated connection between the linear motor 1000 and the vehicle 3000, making it convenient to use the linear motor 1000 to buffer the impact of the vehicle 3000 from the road during driving, thereby improving the smoothness of the vehicle 3000, thereby ensuring the comfort of the vehicle 3000 and enhancing the user experience.

[0110] In some embodiments, as shown in conjunction with FIG1 and FIG3 , a guide groove 122 is provided in the first guide post 120, and a second guide post 220 is provided in the mounting cavity 211. The second guide post 220 extends into the guide groove 122 and slidably engages with the guide groove 122. This enables guiding engagement between the mover assembly 200 and the first guide post 120, and further between the stator assembly 100 and the mover assembly 200. This facilitates the use of the first guide post 120 and the second guide post 220 to guide the movement of the mover assembly 200, thereby preventing the mover assembly 200 from deflecting during movement and ensuring the accuracy of movement of the mover assembly 200.

[0111] That is to say, the present application uses the guide protrusion 400 to limit the moving direction of the movable assembly 200 on the one hand, and uses the second guide column 220 to limit the moving direction of the movable assembly 200 on the other hand, so as to ensure that the movable assembly 200 can move along the predetermined direction and ensure the accuracy of the movement of the movable assembly 200.

[0112] In some embodiments, as shown in conjunction with FIG1 and FIG3 , the linear motor 1000 further includes a second guide bearing 800 disposed between the second guide post 220 and the guide slot 122. The second guide bearing 800 is used to achieve sliding fit between the second guide post 220 and the guide slot 122, thereby enabling relative movement between the second guide post 220 and the guide slot 122 and preventing the second guide post 220 and the guide slot 122 from deviating during movement, thereby preventing the mover assembly 200 from deviating during movement, and ensuring the accuracy of the movement of the mover assembly 200.

[0113] In some embodiments, the second guide bearing 800 is disposed between the second guide column 220 and the inner wall surface of the guide groove 122 , so that the second guide bearing 800 can be used to achieve sliding fit between the second guide column 220 and the guide groove 122 .

[0114] In a specific example, the second guide bearing 800 is fixedly connected to the inner wall surface of the guide groove 122 and slidingly cooperates with the second guide column 220 to achieve sliding cooperation between the second guide column 220 and the guide groove 122 .

[0115] It should be noted that, in the present application, the second guide bearing 800 is arranged between the second guide column 220 and the guide groove 122, so as to realize the arrangement of the second guide bearing 800 in the installation cavity 211. Since the installation cavity 211 has a certain extension length, the applicability increases the extension length of the second guide bearing 800. The second guide bearing 800 with a longer extension length can not only increase its own effective sliding contact surface with the second guide column 220 and reduce the risk of tilting and misalignment, but also ensure that the stator assembly 100 can transfer heat to the mover assembly 200 through the guide groove 122 and the second guide column 220, so that the heat generated by the linear motor 1000 during operation can be conducted to the mover assembly 200, and the heat on the mover assembly 200 can be directly transferred to the external space, thereby improving the heat dissipation efficiency of the linear motor 1000.

[0116] In some embodiments, the second guide post 220 is detachably mounted in the mounting cavity 211. This not only allows the second guide post 220 to be mounted in the mover assembly 200, but also reduces the difficulty of connecting the second guide post 220 to the mover assembly 200 and ensures relative stability between the second guide post 220 and the mover assembly 200. This allows the second guide post 220 to be stably mounted in the mounting cavity 211, thereby ensuring the guiding performance of the second guide post 220.

[0117] At the same time, by detachably arranging the second guide column 220 in the mounting cavity 211, it is also convenient to process the second guide column 220 separately, so that the surface of the second guide column 220 can be processed with high precision, so that the second guide column 220 has a smaller surface roughness, thereby reducing the friction resistance between the second guide column 220 and the second guide bearing 800, so that the second guide bearing 800 and the second guide column 220 form a sliding fit, thereby realizing the sliding fit of the second guide column 220 and the guide groove 122.

[0118] In addition, detachably arranging the second guide column 220 in the installation cavity 211 also facilitates plating treatment on the surface of the second guide column 220 to improve the surface smoothness and wear resistance of the second guide column 220, reduce the friction resistance between the second guide column 220 and the second guide bearing 800, and extend the service life of the second guide column 220.

[0119] That is to say, the present application disassembles the second guide column 220 in the mounting cavity 211 so that the second guide column 220 and the mover assembly 200 are formed into a split type, so that the second guide column 220 can be precisely processed to reduce the friction coefficient on the surface of the second guide column 220, reduce the friction force, and extend the service life of the second guide column 220, and make the second guide column 220 easy to assemble and simple to process.

[0120] In some embodiments, the second guide column 220 is fixedly mounted on the bottom of the installation cavity 211 by means of bolts, so as to achieve detachable cooperation between the second guide column 220 and the installation cavity 211 .

[0121] Of course, in some other embodiments, the second guide post 220 may also be fixedly installed at the bottom of the installation cavity 211 by snapping, screws, etc., so as to achieve detachable cooperation between the second guide post 220 and the installation cavity 211.

[0122] Optionally, the second guide column 220 is made of a material with low wear resistance, such as carbon fiber, aluminum alloy, etc., to reduce the weight of the second guide column 220 and achieve a lightweight design of the linear motor 1000.

[0123] It should be noted that since the second guide column 220 and the mover assembly 200 are formed in a split type, after the second guide column 220 is made of a material with low wear resistance such as carbon fiber, aluminum alloy, etc., the wear resistance of the second guide column 220 can be compensated by surface coating treatment of the second guide column 220. In this way, while ensuring the wear resistance of the second guide column 220, the second guide column 220 can also be made lightweight.

[0124] In other words, the present invention facilitates reducing the weight of the second guide post 220 by detachably placing the second guide post 220 in the mounting cavity 211. Furthermore, since the second guide post 220 is detachably connected to the mounting cavity 211, the installation of the electromagnetic coil and the magnet in the mounting cavity 211 is facilitated.

[0125] In the embodiment of the present application, the housing 210 includes a main structure, an end cover 212, and a lower end cover. The main structure forms a mounting cavity 211. The second guide post 220 is disposed on the lower end cover. At least one of the end cover 212 and the lower end cover is detachably connected to the main structure (i.e., the mounting cavity 211), thereby facilitating the installation of the electromagnetic coil and magnet within the mounting cavity 211. When the lower end cover is detachably connected to the main structure (i.e., the mounting cavity 211), the detachable connection between the second guide post 220 and the mounting cavity 211 is also achieved.

[0126] In summary, the linear motor 1000 of the present application improves the space utilization and functional utilization of the linear motor 1000 through innovative design ideas, leaving more space for the design of electromagnetic components, which can increase the electromagnetic thrust, and also makes the first guide bearing 700 and the second guide bearing 800 as the longest in a limited space, avoiding the problems of the first guide bearing 700 and the second guide bearing 800 being easily skewed and deformed and the small mating surface, thereby improving the overall competitiveness, and at the same time improving the processing convenience of the second guide column 220, thereby reducing friction, increasing lightweight, and improving heat dissipation performance, thereby greatly improving the performance of the entire linear motor 1000.

[0127] In some embodiments, as shown in FIG1 , the linear motor 1000 further includes a lower tray 500 disposed on the outer peripheral wall of the mover assembly 200. A placement space for a damping spring 600 is defined between the mounting member 110 and the lower tray 500. The damping spring 600 is placed within the placement space so that the mounting member 110 and the lower tray 500 cooperate to secure the damping spring 600. This allows the damping spring 600 to be buffered and absorb vibrations when the vehicle 3000 is excited by the road surface and the mover assembly 200 performs vertical telescopic motion. Furthermore, the damping spring 600 also provides a certain degree of damping, thereby enhancing the vibration reduction effect of the linear motor 1000 and thereby improving the comfort of the vehicle 3000.

[0128] That is to say, the present application sets a lower tray 500 on the outer peripheral wall of the mover assembly 200 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.

[0129] In some embodiments, as shown in Figure 1, the shock-absorbing spring 600 is arranged between the mounting member 110 and the lower tray 500, and the upper end of the shock-absorbing spring 600 is abutted against the mounting member 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.

[0130] Optionally, the lower tray 500 is integrally formed with the outer peripheral wall of the mover assembly 200 to reduce the difficulty of molding the lower tray 500 and ensure the connection strength between the lower tray 500 and the mover assembly 200, ensuring that the lower tray 500 can be stably arranged on the outer peripheral wall of the mover assembly 200, thereby facilitating the use of the lower tray 500 to support the shock-absorbing spring 600 and ensure the working performance of the shock-absorbing spring 600. At the same time, the setting of the connecting device between the lower tray 500 and the mover assembly 200 can also be eliminated, simplifying the structure of the linear motor 1000 and making the structure of the linear motor 1000 compact.

[0131] The suspension system 2000 according to an embodiment of the present application will be described below with reference to the accompanying drawings.

[0132] As shown in FIG6 , a suspension system 2000 according to an embodiment of the present application includes a linear motor 1000 .

[0133] 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.

[0134] It can be seen from the above structure that the suspension system 2000 of the embodiment of the present application can effectively improve the working performance of the suspension system 2000 by adopting the aforementioned linear motor 1000.

[0135] The vehicle 3000 of an embodiment of the present application is described below with reference to the accompanying drawings.

[0136] As shown in FIG6 , a vehicle 3000 according to an embodiment of the present application includes: a suspension system 2000 .

[0137] 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.

[0138] 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.

[0139] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0140] FIG5 shows two second anti-rotation grooves 710 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, three or more second anti-rotation grooves 710, which also falls within the scope of protection of this application.

[0141] 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.

[0142] 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.

[0143] 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; A rotor assembly, one of the rotor assembly and the stator assembly is provided with an installation cavity, and the other is provided with a first guide post. The installation cavity has an end cover and a guide protrusion provided on the end cover. The thickness of the guide protrusion is greater than the thickness of the end cover. The guide protrusion has an opening communicating with the installation cavity, and the first guide post extends into the installation cavity through the opening; A first guide bearing, at least part of the structure of the first guide bearing is arranged in the opening, and the first guide post is slidably matched with the guide protrusion through the first guide bearing.

2. The linear motor according to claim 1, wherein, The first guide bearing is arranged on the guide protrusion, and the first guide post is slidably matched with the first guide bearing.

3. The linear motor according to claim 1 or 2, wherein, The guide protrusion extends in a direction away from the installation cavity.

4. The linear motor according to any one of claims 1 to 3, wherein, A groove for placing the first guide bearing is provided on the inner peripheral wall of the guide protrusion.

5. The linear motor according to any one of claims 1-4, wherein, It further includes a limiting member, and the limiting member cooperates with at least one of the first guide bearing and the first guide post to limit the relative rotation of the first guide bearing with respect to the first guide post.

6. The linear motor according to claim 5, wherein, A first anti-rotation groove is provided on the outer peripheral wall of the first guide post. The limiting member includes a limiting protrusion, and the limiting protrusion is in limiting cooperation with the first guide bearing. The limiting protrusion extends into the first anti-rotation groove and is slidably matched with the first anti-rotation groove.

7. The linear motor according to claim 6, wherein, The first guide bearing is provided with an installation groove, and the limiting protrusion is fixed to the installation groove.

8. The linear motor according to claim 6, wherein, The first guide bearing is provided with a second anti-rotation groove, and the second anti-rotation groove is correspondingly arranged with the first anti-rotation groove so that the limiting protrusion passes through the second anti-rotation groove.

9. The linear motor according to claim 8, wherein, The guide protrusion is provided with a third anti-rotation groove, and the third anti-rotation groove and the second anti-rotation groove are both correspondingly arranged with the first anti-rotation groove so that the limiting protrusion passes through the second anti-rotation groove and the third anti-rotation groove.

10. The linear motor according to any one of claims 1-9, wherein, It further includes a sensor assembly, and the sensor assembly includes a reading head and a reference member. One of the reference member and the reading head is arranged on the guide protrusion, and the other of the reference member and the reading head is arranged on the other of the rotor assembly and the stator assembly. The reading head and the reference member cooperate to detect the moving position of the rotor assembly.

11. The linear motor according to claim 10, wherein, The reading head is arranged on the guide protrusion, and the reference member is arranged on the first guide post.

12. The linear motor according to claim 11, wherein, In the extending direction of the first guide post, the reading head and the first guide bearing are arranged at intervals.

13. The linear motor according to claim 11, wherein, In the extending direction of the first guide post, at least part of the reading head overlaps with the first guide bearing. The first guide bearing is provided with an avoidance groove, and the reading head is correspondingly arranged with the avoidance groove so that the reading head is correspondingly arranged with the reference member through the avoidance groove.

14. The linear motor according to any one of claims 1-13, wherein, The stator assembly includes the first guide post. The stator assembly further includes a mounting member for mounting to a vehicle. The first guide post is mounted to the mounting member, and the mounting member is provided with an avoidance space for avoiding the guide protrusion.

15. The linear motor according to any one of claims 1-14, wherein, The linear motor includes an electromagnetic coil and a magnet, one of the electromagnetic coil and the magnet is disposed on the stator assembly, the other of the electromagnetic coil and the magnet is disposed on the mover assembly, and the electromagnetic coil and the magnet cooperate to enable the mover assembly to reciprocate relative to the stator assembly.

16. The linear motor according to claim 15, wherein, The electromagnetic coil is disposed on the first guide post, and the magnet is disposed in the installation cavity.

17. The linear motor according to any one of claims 1-16, wherein, A guide groove is provided in the first guide post, a second guide post is provided in the installation cavity, and the second guide post extends into the guide groove and is in sliding fit with the guide groove.

18. The linear motor according to claim 17, wherein, It further includes a second guide bearing, and the second guide bearing is disposed between the second guide post and the guide groove.

19. The linear motor according to claim 17 or 18, wherein The second guide post is detachably disposed in the installation cavity.

20. A suspension system, wherein, It includes the linear motor according to any one of claims 1-19.

21. A vehicle, wherein, It includes the suspension system according to claim 20.

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