Linear motor, suspension system and vehicle

Abstract

The utility model discloses a linear motor, a suspension system and a vehicle, the linear motor comprises a primary assembly and a secondary assembly, the primary assembly comprises a primary support member and a primary coupling member, the primary coupling member is arranged in the primary support member, and a first guide space is arranged in the primary coupling member; the secondary assembly comprises a secondary supporting piece and a secondary coupling piece, the secondary supporting piece comprises a shell part and a guide column, the guide column is arranged in the shell part and extends towards an insertion opening of the shell part, a second guide space is formed between the guide column and the inner wall of the shell part, and at least part of the guide column extends into the first guide space; at least part of the primary assembly extends into the second guide space, and the secondary coupling piece is arranged on the guide column and matched with the primary coupling piece in a coupling mode. Therefore, the smoothness of the primary assembly and the secondary assembly during relative movement can be improved, so that the linear motor can operate stably, and the reliability of the linear motor is improved.

Description

[0001] Cross-reference to related applications

[0002] This utility model is based on Chinese Patent Application No. 2023118683613, filed on December 29, 2023, and claims priority to that Chinese Patent Application, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This utility model relates to the field of vehicle technology, and in particular to a linear motor, a suspension system, and a vehicle. Background Technology

[0004] A linear motor consists of a primary permanent magnet and a secondary coil. Its working principle involves applying three-phase electricity to the secondary coil. The current flowing through the secondary coil generates a magnetic field, which then controls the up-and-down movement of the primary permanent magnet, thereby driving the linear motor's outer cylinder to move vertically. This linear motor technology can be applied to automotive suspension structures, using the linear motor's displacement to actively adjust the suspension height, thus achieving different vehicle postures and ground clearance, resulting in better passability in complex road conditions. However, in related technologies, the stability of the connection between the primary permanent magnet and the secondary coil is relatively poor, causing vibration during linear motor operation and making stable operation difficult, indicating room for improvement. Utility Model Content

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a linear motor in which the primary and secondary components exhibit good smoothness during relative motion, and the linear motor can operate stably and reliably.

[0006] A linear motor according to an embodiment of the present invention includes: a primary assembly, the primary assembly including a primary support member and a primary coupling member, the primary coupling member being disposed within the primary support member, and a first guide space being provided within the primary coupling member; and a secondary assembly, the secondary assembly including a secondary support member and a secondary coupling member, the secondary support member including a housing portion and a guide post, the guide post being disposed within the housing portion and extending toward an insertion port of the housing portion, a second guide space being provided between the guide post and the inner wall of the housing portion, at least a portion of the guide post extending into the first guide space, at least a portion of the primary assembly extending into the second guide space, and the secondary coupling member being disposed on the guide post and coupled with the primary coupling member.

[0007] According to the embodiments of the present invention, by setting the primary component to be guided and cooperated with the housing and the guide post respectively, the smoothness of the primary component and the secondary component during relative movement can be improved, so that the linear motor can operate stably and the reliability of the linear motor can be improved.

[0008] The linear motor according to some embodiments of the present application, the primary coupling piece comprises a core assembly and a winding group arranged on the core assembly, and the secondary coupling piece is a permanent magnet arranged on the outer wall of the guide column.

[0009] The linear motor according to some embodiments of the present application, the core assembly comprises a plurality of primary cores, and the plurality of primary cores are arranged in a stacked manner in the axial direction of the primary support piece, and the placement space of the winding group is defined between adjacent primary cores.

[0010] The linear motor according to some embodiments of the present application, in the radial direction of the primary support piece, the radially outer side of adjacent primary cores is overlapped and the radially inner side is at least partially spaced to define the placement space.

[0011] The linear motor according to some embodiments of the present application, at least one of the primary support piece and the secondary support piece is provided with the guide bearing, and the guide bearing is used for guiding the primary support piece or the secondary support piece in the axial direction of the guide bearing.

[0012] The linear motor according to some embodiments of the present application, the guide bearing is arranged between the primary support piece and the guide column and between the primary support piece and the housing part.

[0013] The linear motor according to some embodiments of the present application, the guide bearing arranged between the primary support piece and the guide column is defined as a first guide bearing, the inner wall of the primary support piece is provided with the first guide bearing, the end portion of the guide column extending into the first guide space is provided with a first matching protrusion, and the first matching protrusion is guided and matched with the first guide bearing.

[0014] The linear motor according to some embodiments of the present application, the primary support piece comprises a first part and a second part, the inner diameter of the first part is smaller than the inner diameter of the second part, the primary coupling piece is arranged on the inner wall of the second part and contacts the end surface of the second part facing the first part, and the first guide bearing is arranged on the inner wall of the first part and guided and matched with the first matching protrusion.

[0015] The linear motor according to some embodiments of the present application, the inner diameter of the first guide bearing is the same as the inner diameter of the first guide space.

[0016] The linear motor according to some embodiments of the present application, the radial outer circumferential wall of the guide column is provided with a placing groove, the secondary coupling member is arranged in the placing groove, and the two ends of the secondary coupling member are respectively abutted against the first matching protrusion and the inner end face of the placing groove in the axial direction of the guide column.

[0017] The linear motor according to some embodiments of the present application, the guide bearing located between the primary support member and the housing part is defined as a second guide bearing, the inner wall of the housing part is provided with the second guide bearing, and the second guide bearing is arranged on the outer side of the second part to guide and match with the second part.

[0018] The linear motor according to some embodiments of the present application, the outer diameter of the second part is greater than the outer diameter of the first part, and the second guide bearing guides and matches with the outer circumferential wall of the second part.

[0019] The linear motor according to some embodiments of the present application, the outer circumferential wall of the primary support member is provided with a first limiting protrusion, the outer circumferential wall of the secondary support member is provided with a second limiting protrusion, and the first limiting protrusion and the second limiting protrusion are arranged in an axial direction and are spaced apart.

[0020] The utility model also proposes a suspension system.

[0021] The suspension system according to the embodiments of the present application comprises the linear motor according to any one of the above embodiments.

[0022] The suspension system according to the embodiments of the present application, by guiding and matching the primary assembly with the housing part and the guide column respectively, the smoothness of the primary assembly and the secondary assembly during relative movement can be improved, so that the linear motor can stably operate, the reliability of the linear motor is improved, and the reliability of the suspension system is improved.

[0023] The suspension system according to some embodiments of the present application, the outer circumferential wall of the primary support member is provided with a first limiting protrusion, the outer circumferential wall of the secondary support member is provided with a second limiting protrusion, the suspension system further comprises a damping spring, the damping spring is sleeved on the outer side of the primary assembly, and the two ends of the damping spring are connected with the first limiting protrusion and the second limiting protrusion respectively.

[0024] The utility model also proposes a vehicle.

[0025] The vehicle according to the embodiments of the present application comprises the linear motor according to any one of the above embodiments. Embodiments The suspension system.

[0026] According to the vehicle of the embodiment of the present application, the primary assembly is guided by the housing part and the guide column, so that the smoothness of the primary assembly and the secondary assembly during relative movement is improved, the linear motor can be stably operated, the reliability of the linear motor is improved, the reliability of the suspension system is improved, and the overall performance of the vehicle is improved.

[0027] Additional aspects and advantages of the present application will be described in the following description, become apparent from the following description, or be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0028] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description, taken in conjunction with the following drawings, in which:

[0029] Figure 1 is a schematic view of the suspension system according to the embodiment of the present application;

[0030] Figure 2 is a sectional view of the linear motor according to the embodiment of the present application;

[0031] Figure 3 is a sectional view of the primary assembly according to the embodiment of the present application;

[0032] Figure 4 is a sectional view of the primary support according to the embodiment of the present application;

[0033] Figure 5 is a sectional view of the secondary assembly according to the embodiment of the present application;

[0034] Figure 6 is an exploded view of the primary coupling according to the embodiment of the present application.

[0035] REFERENCE NUMERALS:

[0036] Suspension system 1000,

[0037] Linear motor 100, damping spring 200,

[0038] Primary assembly 1, primary support 11, first part 11a, second part 11b, accommodating cavity 110, second matching protrusion 111, first limiting protrusion 112, primary coupling 12, winding group 121, core assembly 122, primary core 1221, end core 1221a, middle core 1221b, first guide space 123,

[0039] Secondary assembly 2, secondary support 21, housing part 211, guide column 212, first matching protrusion 2121, second guide space 213, second limiting protrusion 214, placing groove 215, insertion port 216, secondary coupling member 22, permanent magnet 221, guide bearing 3, first guide bearing 31, second guide bearing 32. DETAILED DESCRIPTION

[0040] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0041] Next, referring to the drawings, a linear motor 100 according to an embodiment of the present application is described.

[0042] As shown in Figures 1-6 According to the linear motor 100 of the present application, the linear motor 100 includes a primary assembly 1 and a secondary assembly 2. The primary assembly 1 includes a primary support 11 and a primary coupling member 12. The primary coupling member 12 is arranged in the primary support 11, and a first guide space 123 is arranged in the primary coupling member 12. The secondary assembly 2 includes a secondary support 21 and a secondary coupling member 22. The secondary support 21 includes a housing part 211 and a guide column 212. The guide column 212 is arranged in the housing part 211 and extends towards an insertion port 216 of the housing part 211. A second guide space 213 is arranged between the guide column 212 and an inner wall of the housing part 211. At least part of the guide column 212 extends into the first guide space 123, and at least part of the primary assembly 1 extends into the second guide space 213. The secondary coupling member 22 is arranged in the guide column 212 and is coupled with the primary coupling member 12.

[0043] Thus, the smoothness of the primary assembly 1 and the secondary assembly 2 during relative movement can be improved, so that the linear motor 100 can operate stably, and the reliability of the linear motor 100 is improved.

[0044] For example, referring to Figures 1-5 The linear motor 100 is used to connect between a vehicle body and an axle of a vehicle. When the axle vibrates, the vibration can be transmitted to the vehicle body through the linear motor 100. The linear motor 100 includes a primary assembly 1 and a secondary assembly 2. The primary assembly 1 includes a primary support 11 and a primary coupling member 12. The primary support 11 and the primary coupling member 12 are both cylindrical. An accommodating cavity 110 is formed in the primary support 11. The primary coupling member 12 is arranged in the accommodating cavity 110 of the primary support 11, and a first guide space 123 is formed in the primary coupling member 12.

[0045] Secondary component 2 includes secondary support 21 and secondary coupling 22. Secondary support 21 includes housing 211 and guide post 212. Housing 211 is cylindrical and has an insertion port 216 at one end along its length. Guide post 212 is disposed inside housing 211. One end of guide post 212 is connected to housing 211 and the other end extends toward insertion port 216. The outer wall of guide post 212 is spaced apart from the inner wall of housing 211 and forms a second guide space 213.

[0046] The second guide space 213 is matched with the primary component 1, and the first guide space 123 is matched with the guide post 212. When the primary component 1 is installed into the secondary component 2, at least a portion of the guide post 212 can pass through the first guide space 123 and be guided and engaged with the primary support member 11, and at least a portion of the primary component 1 can extend into the second guide space 213 and be guided and engaged with the housing portion 211.

[0047] The secondary coupling element 22 can be disposed on the guide post 212, such as on the outer peripheral wall of the guide post 212, so that the secondary coupling element 22 can be disposed opposite to the primary coupling element 12. One of the primary coupling element 12 and the secondary coupling element 22 is a winding assembly 121 and the other is a permanent magnet 221, which are coupled together. When the winding assembly 121 is energized, it can generate an applied magnetic field, and the permanent magnet 221 can generate a magnetic force within the magnetic field, so that damping can be generated between the primary component 1 and the secondary component 2 to achieve vehicle vibration reduction. This improves the stability of the relative movement between the primary component 1 and the secondary component 2 and ensures the smooth operation of the linear motor 100.

[0048] According to the embodiment of the present utility model, the linear motor 100 is configured to be guided and cooperated with the housing part 211 and the guide post 212 respectively, which can improve the smoothness of the primary component 1 and the secondary component 2 during relative movement, so that the linear motor 100 can operate stably and improve the reliability of the linear motor 100.

[0049] In some embodiments of this utility model, the primary coupling member 12 includes an iron core assembly 122 and a winding group 121 disposed on the iron core assembly 122, and the secondary coupling member 22 is a permanent magnet 221 disposed on the outer peripheral wall of the guide post 212.

[0050] For example, refer to Figure 2 As shown, the primary coupling member 12 includes a core assembly 122 and a winding assembly 121. The core assembly 122 is installed in the receiving cavity 110 of the primary support member 11 and has a placement space. The winding assembly 121 is placed in the placement space to be installed on the primary support member 11. The secondary coupling member 22 is a permanent magnet 221, which is located on the outer peripheral wall of the guide post 212.

[0051] It can be understood that, by setting the wire winding group 121 on the radial outer side of the permanent magnet 221, the wire winding group 121 is easy to dissipate heat, which can reduce the temperature of the linear motor 100 during operation, and by setting the permanent magnet 221 on the outer peripheral wall of the guide column 212, the installation difficulty of the permanent magnet 221 is reduced, and the design rationality of the linear motor 100 is improved.

[0052] In some embodiments of the utility model, the iron core assembly 122 includes a plurality of primary iron cores 1221, and the plurality of primary iron cores 1221 are stacked in the axial direction of the primary support 11, and the adjacent primary iron cores 1221 define a placement space for the wire winding group 121.

[0053] For example, referring to Figure 3 and Figure 6 , the iron core assembly 122 can include a plurality of primary iron cores 1221, and the plurality of primary iron cores 1221 are stacked in the axial direction of the primary support 11. Among them, the plurality of primary iron cores 1221 are divided into end iron cores 1221a and middle iron cores 1221b, and the end iron cores 1221a, a plurality of middle iron cores 1221b (which can be zero) and the end iron cores 1221a are sequentially stacked, and the annular placement space is defined between any two adjacent primary iron cores 1221, and the wire winding group 121 is placed in the placement space.

[0054] Exemplarily, as shown in Figures 3-4 , first, an end iron core 1221a is fitted into the receiving cavity 110 of the primary support 11 to cooperate with the primary support 11, thereby positioning the primary iron core 1221, then the wire winding group 121 and the middle iron core 1221b are alternately fitted into the receiving cavity 110; finally, the other end iron core 1221a is fitted into the receiving cavity 110 and fixed with the primary support 11, such as gluing, clamping or welding, etc., so that the installation of the primary coupling member 12 is completed. Of course, the present application is not limited to this, but also can assemble the plurality of primary iron cores 1221 and the wire winding group 121 into one, and then fit them into the receiving cavity 110 of the primary support 11. Through the above setting, the processing difficulty of the linear motor 100 can be reduced, and the practicability of the linear motor 100 is improved.

[0055] In some embodiments of the utility model, in the radial direction of primary support 11, the radial outer side of adjacent primary core 1221 is overlapped and the radial inner side is at least partially spaced to define a placement space open towards the radial inner side between the two adjacent primary cores 1221. In this way, when the winding group 121 is installed in the placement space, the winding group 121 can be directly opposite to the permanent magnet 221 along the radial direction, so as to reduce or eliminate the interference of the primary core 1221 on the winding group 121. Therefore, the reliability of the linear motor 100 is improved.

[0056] In some embodiments of the utility model, the linear motor 100 of the utility model embodiment further comprises a guide bearing 3, at least one of the primary support 11 and the secondary support 21 is provided with the guide bearing 3, and the guide bearing 3 is used for guiding the primary support 11 or the secondary support 21 along the axial direction of the guide bearing 3.

[0057] For example, as shown in Figures 2-4 The linear motor 100 further comprises a guide bearing 3, at least one of the primary support 11 and the secondary support 21 is provided with the guide bearing 3, and the guide bearing 3 is used for guiding the primary support 11 or the secondary support 21 along the axial direction of the guide bearing 3, for example, the guide bearing 3 can be arranged on the primary support 11 and guideedly cooperates with the secondary support 21; or the guide bearing 3 can be arranged on the secondary support 21 and guideedly cooperates with the primary support 11; or the guide bearing 3 can be arranged on the primary support 11 and the secondary support 21 respectively, the guide bearing 3 arranged on the primary support 11 guideedly cooperates with the secondary support 21, and the guide bearing 3 arranged on the secondary support 21 guideedly cooperates with the primary support 11.

[0058] It can be understood that by arranging the guide bearing 3 between the secondary support 21 and the primary support 11, the movement resistance between the primary support 11 and the secondary support 21 can be reduced, and the running smoothness of the linear motor 100 is improved.

[0059] In some embodiments of the utility model, as shown in Figure 2 The guide bearing 3 is arranged between the primary support 11 and the guide column 212 and between the primary support 11 and the housing portion 211. For example, the guide bearing 3 can be mounted on the inner wall of the housing portion 211 and guideedly cooperates with the outer wall of the primary support 11, and the guide bearing 3 can be mounted on the inner wall of the primary support 11 and guideedly cooperates with the outer wall of the guide column 212.

[0060] Of course, the guide bearing 3 can also be arranged on the outer peripheral wall of the primary support 11, so that the guide bearing 3 can be guided in cooperation with the housing portion 211; or the guide bearing 3 can be arranged on the outer peripheral wall of the guide column 212, so that the guide bearing 3 can be guided in cooperation with the primary support 11, and the present application does not limit this.

[0061] Through the above arrangement, the movement resistance between the primary support 11 and the secondary support 21 can be effectively reduced, and the movement smoothness of the linear motor 100 is improved.

[0062] Further, as shown in Figure 2 , two guide bearings 3 can be arranged at the two ends of the linear motor 100 along the axial direction, so as to improve the guiding effect of the guide bearings 3, thereby improving the movement smoothness of the linear motor 100.

[0063] In some embodiments of the present application, the guide bearing 3 defined between the primary support 11 and the guide column 212 is a first guide bearing 31, the inner wall of the primary support 11 is provided with the first guide bearing 31, and the end portion of the guide column 212 extending into the first guide space 123 is provided with a first matching protrusion 2121, and the first matching protrusion 2121 is guided in cooperation with the first guide bearing 31.

[0064] For example, referring to Figures 2-5 , the guide bearing 3 between the primary support 11 and the guide column 212 can be positioned as the first guide bearing 31, the first guide bearing 31 is arranged on the inner wall of the primary support 11 and is arranged staggered with the primary coupling 12, for example, the first guide bearing 31 can be arranged on the end of the primary coupling 12 away from the secondary assembly 2 along the axial direction. At the same time, the end portion of the guide column 212 extending into the first guide space 123 is provided with a first matching protrusion 2121, the first matching protrusion 2121 extends around the circumference of the guide column 212 and protrudes outward along the radial direction of the guide column 212, and the first matching protrusion 2121 is used for guiding cooperation with the first guide bearing 31, so as to reduce the sliding resistance between the primary support 11 and the guide column 212.

[0065] Through the above arrangement, the first guide bearing 31 can be spaced apart from the outer surface of the guide column 212, the contact area between the first guide bearing 31 and the guide column 212 is reduced, and the frictional resistance is reduced.

[0066] In some embodiments of the present application, the primary support 11 comprises a first portion 11a and a second portion 11b, the inner diameter of the first portion 11a is smaller than the inner diameter of the second portion 11b, and the primary coupling 12 is arranged on the inner wall of the second portion 11b and in contact with the end surface of the second portion 11b facing the first portion 11a; the first guide bearing 31 is arranged on the inner wall of the first portion 11a and guided in cooperation with the first matching protrusion 2121.

[0067] For example, referring to Figures 2-3 The first portion 11a has an inner diameter smaller than that of the second portion 11b. The primary coupling member 12 is arranged in matching with the second portion 11b, such that the primary coupling member 12 can be mounted at the inner wall of the second portion 11b, and an axial end of the primary coupling member 12 can be in contact with an end surface of the second portion 11b facing the first portion 11a, for realizing positioning between the primary coupling member 12 and the primary support member 11.

[0068] The first guide bearing 31 can be arranged in matching with the first portion 11a, such that the first guide bearing 31 can be mounted at the inner wall of the first portion 11a. When the secondary assembly 2 is mounted to the primary assembly 1, the end portion of the guide column 212 can pass through the second portion 11b and extend into the first portion 11a, such that the first matching protrusion 2121 arranged at the end portion of the guide column 212 can be guided and matched with the first guide bearing 31.

[0069] By the above arrangement, convenient positioning of the first guide bearing 31, the primary coupling member 12 and the primary support member 11 can be realized, which is beneficial to reduce assembly difficulty, and can improve mounting stability of the primary coupling member 12 and reliability of the linear motor 100.

[0070] In some embodiments of the present application, as shown in Figure 3 The inner diameter of the first guide bearing 31 can be the same as that of the first guide space 123, such that the inner peripheral wall of the first guide bearing 31 can smoothly connect with the inner peripheral wall of the first guide space 123. In this way, when the secondary assembly 2 is mounted to the primary assembly 1, the inner peripheral wall of the first guide space 123 can guide the first matching protrusion 2121 of the guide column 212 to the first guide bearing 31. Thus, assembly fluency of the primary assembly 1 and the secondary assembly 2 can be improved.

[0071] In some embodiments of the present application, the radial outer peripheral wall of the guide column 212 is provided with a placing groove 215, and the secondary coupling member 22 is arranged in the placing groove 215. In the axial direction of the guide column 212, the two ends of the secondary coupling member 22 are respectively abutted against the first matching protrusion 2121 and the inner end surface of the placing groove 215.

[0072] For example, referring to Figure 2 and Figure 5As shown, the radial outer peripheral wall of the guide column 212 can be provided with a placement groove 215, which is matched with the secondary coupling member 22, so that the secondary coupling member 22 can be arranged in the placement groove 215, and the first matching protrusion 2121 can be arranged at one end of the placement groove 215 along the axial direction of the guide column 212. When the secondary coupling member 22 is placed in the placement groove 215, the two ends of the secondary coupling member 22 are respectively stopped at the first matching protrusion 2121 and the inner end face of the placement groove 215 along the axial direction of the guide column 212, so as to realize the stable installation of the secondary coupling member 22.

[0073] Through the above arrangement, the space of the guide column 212 along the axial direction can be fully utilized, which is beneficial to reduce the size of the linear motor 100. In addition, since the first matching protrusion 2121 has good limiting effect on the secondary coupling member 22, the radial size of the secondary coupling member 22 can be slightly larger than the depth of the placement groove 215, which is beneficial to reduce the diameter of the guide column 212.

[0074] In some embodiments of the present application, the guide bearing 3 located between the primary support 11 and the housing part 211 is defined as a second guide bearing 32; the inner wall of the housing part 211 is provided with the second guide bearing 32, and the second guide bearing 32 is arranged on the outer side of the second part 11b to guide the second part 11b.

[0075] For example, referring to Figure 2 and Figure 5 , the guide bearing 3 located between the primary support 11 and the housing part 211 can be defined as a second guide bearing 32. The second guide bearing 32 is adapted to be mounted at the inner wall of the housing part 211, and after the primary assembly 1 and the secondary assembly 2 are installed, the second guide bearing 32 is located on the outer side of the second part 11b, so that the second guide bearing 32 can guide the second part 11b.

[0076] Through the above arrangement, the first guide bearing 31 and the second guide bearing 32 can be arranged staggered, which is beneficial to reduce the radial size of the linear motor 100, and the first guide bearing 31 and the second guide bearing 32 can guide the two axial ends of the guide column 212 respectively, which has good guiding effect and is beneficial to improve the operation stability of the linear motor 100.

[0077] In some embodiments of the present application, as shown in Figure 2 and Figure 4 , the outer diameter of the second part 11b can be greater than the outer diameter of the first part 11a, and the second guide bearing 32 is guided and matched with the peripheral wall of the second part 11b. Through the above arrangement, the wall thickness of the primary support 11 at the first part 11a and the second part 11b can be the same or similar, so as to ensure the structural strength of the primary support 11 as a whole, and improve the reliability of the linear motor 100.

[0078] Further, as shown in Figure 2 and Figure 4 , a second matching protrusion 111 can be arranged on the outer peripheral wall of the second part 11b, the second matching protrusion 111 extends along the circumference of the second part 11b and is arranged outwardly in the radial direction, and the second matching protrusion 111 is guided in cooperation with the second guide bearing 32. Through the above arrangement, the structural strength of the cooperation position of the second part 11b and the second guide bearing 32 can be improved.

[0079] In some embodiments of the present application, a first limiting protrusion 112 is arranged on the outer peripheral wall of the primary support 11, and a second limiting protrusion 214 is arranged on the outer peripheral wall of the secondary support 21, and the first limiting protrusion 112 and the second limiting protrusion 214 are arranged in the axial direction and are spaced apart.

[0080] For example, as shown in Figures 1-2 , a first limiting protrusion 112 can be arranged on the outer peripheral wall of the primary support 11, the first limiting protrusion 112 is configured as a ring structure arranged outwardly in the radial direction, and a second limiting protrusion 214 can be arranged on the outer peripheral wall of the first part 11a of the secondary support 21, the second limiting protrusion 214 is configured as a ring structure arranged outwardly in the radial direction, and the first limiting protrusion 112 and the second limiting protrusion 214 are arranged in the axial direction and are spaced apart.

[0081] At the same time, a damping spring 200 can be arranged outside the linear motor 100, and the two ends of the damping spring 200 are connected with the first limiting protrusion 112 and the second limiting protrusion 214 respectively. When the vehicle passes through uneven road and causes vibration, the primary assembly 1 reciprocates relative to the secondary assembly 2, and the damping spring 200 deforms to generate elastic force, thereby absorbing vibration. Through the above arrangement, the design rationality of the linear motor 100 can be improved, and the reliability of the linear motor 100 is improved.

[0082] The utility model also proposes a kind of suspension system 1000.

[0083] As shown in Figure 1 , according to the suspension system 1000 of the utility model embodiment, it includes the linear motor 100 according to any one of the above embodiments.

[0084] According to the suspension system 1000 of the utility model embodiment, by being guided in cooperation with the shell part 211 and the guide column 212 respectively by the primary assembly 1, the smoothness of the primary assembly 1 and the secondary assembly 2 when relative motion can be improved, so that the linear motor 100 can be stably operated, the reliability of the linear motor 100 is improved, and the reliability of the suspension system 1000 is improved.

[0085] In some embodiments of the utility model, first limit protrusion 112 is equipped on the outer peripheral wall of primary support piece 11, and second limit protrusion 214 is equipped on the outer peripheral wall of secondary support piece 21;Suspension system 1000 further includes damping spring 200, damping spring 200 is sleeved on the outer side of primary assembly 1, and the both ends of damping spring 200 are connected with first limit protrusion 112 and second limit protrusion 214 respectively.

[0086] For example, referring to Figure 1 As shown, first limit protrusion 112 can be arranged on the outer peripheral wall of primary support piece 11, and first limit protrusion 112 is configured as a ring structure arranged radially, and second limit protrusion 214 can be arranged on the outer peripheral wall of the first part 11a of secondary support piece 21, and second limit protrusion 214 is configured as a ring structure arranged radially, and first limit protrusion 112 and second limit protrusion 214 are arranged in axial direction and spaced apart.

[0087] Wherein, damping spring 200 can be sleeved on the outer side of linear motor 100, and damping spring 200 is located between first limit protrusion 112 and second limit protrusion 214 and connected with first limit protrusion 112 and second limit protrusion 214 at both ends. In this way, when the vehicle passes through uneven road surface to cause vibration so that primary assembly 1 reciprocates relative to secondary assembly 2, damping is generated between primary coupling 12 and secondary coupling 22, and damping spring 200 deforms to generate elastic force, so that linear motor 100 and damping spring 200 can jointly absorb vibration. Therefore, the reliability of suspension system 1000 is improved.

[0088] The utility model further provides a vehicle.

[0089] According to the vehicle of the utility model embodiment, the suspension system 1000 according to any one of the above embodiments is included.

[0090] According to the vehicle of the utility model embodiment, by setting primary assembly 1 and shell part 211 and guide column 212 guiding cooperation respectively, the smoothness of primary assembly 1 and secondary assembly 2 when relative motion can be improved, so that linear motor 100 can stably run, the reliability of linear motor 100 is improved, the reliability of suspension system 1000 is improved, and the overall performance of the vehicle is improved.

[0091] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0092] In the description of the utility model, "first feature", "second feature" can include one or more features.

[0093] In the description of the utility model, "multiple" means two or more.

[0094] In the description of the utility model, the "above" or "below" of the first feature to the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them.

[0095] In the description of the utility model, the "above", "upper" and "upper surface" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature.

[0096] In the description of the utility model, the description of the reference terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the description of the utility model, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0097] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A linear motor (100), characterized in that The application relates to a primary assembly (1) and a secondary assembly (2), and belongs to the technical field of electric machines. The primary assembly (1) comprises a primary support (11) and a primary coupling (12), the primary coupling (12) is arranged in the primary support (11), and a first guide space (123) is arranged in the primary coupling (12). The secondary assembly (2) comprises a secondary support (21) and a secondary coupling (22), the secondary support (21) comprises a housing part (211) and a guide column (212), the guide column (212) is arranged in the housing part (211) and extends towards an insertion opening (216) of the housing part (211), a second guide space (213) is arranged between the guide column (212) and an inner wall of the housing part (211), at least part of the guide column (212) extends into the first guide space (123), at least part of the primary assembly (1) extends into the second guide space (213), and the secondary coupling (22) is arranged on the guide column (212) and is coupled with the primary coupling (12).

2. Linear motor (100) according to claim 1, characterized in that The primary coupling (12) comprises a core assembly (122) and a winding group (121) arranged on the core assembly (122), and the secondary coupling (22) is a permanent magnet (221) arranged on a peripheral wall of the guide column (212).

3. Linear motor (100) according to claim 2, characterized in that The core assembly (122) comprises a plurality of primary cores (1221), and the plurality of primary cores (1221) are arranged in a stacked mode in the axial direction of the primary support (11), and the adjacent primary cores (1221) define a placement space of the winding group (121).

4. Linear motor (100) according to claim 3, characterized in that In the radial direction of the primary support (11), the adjacent primary cores (1221) are arranged in a mode that the radial outer sides of the primary cores (1221) are overlapped and the radial inner sides of the primary cores (1221) are at least partially spaced apart to define the placement space.

5. The linear motor (100) according to claim 1, characterized in that The application further comprises a guide bearing (3), at least one of the primary support (11) and the secondary support (21) is provided with the guide bearing (3), and the guide bearing (3) is used for guiding the primary support (11) or the secondary support (21) in the axial direction of the guide bearing (3).

6. Linear motor (100) according to claim 5, characterized in that The guide bearing (3) is arranged between the primary support (11) and the guide column (212) and between the primary support (11) and the housing part (211).

7. The linear motor (100) according to claim 5, characterized in that The guide bearing (3) arranged between the primary support (11) and the guide column (212) is defined as a first guide bearing (31), the inner wall of the primary support (11) is provided with the first guide bearing (31), the end of the guide column (212) extending into the first guide space (123) is provided with a first matching protrusion (2121), and the first matching protrusion (2121) is guided and matched with the first guide bearing (31).

8. Linear motor (100) according to claim 7, characterized in that The primary support (11) comprises a first part (11a) and a second part (11b), the inner diameter of the first part (11a) is smaller than that of the second part (11b), and the primary coupling (12) is arranged on the inner wall of the second part (11b) and in contact with the end face of the second part (11b) facing the first part (11a); The first guide bearing (31) is arranged on the inner wall of the first part (11a) and in guiding cooperation with the first matching protrusion (2121).

9. Linear motor (100) according to claim 8, characterized in that The inner diameter of the first guide bearing (31) is the same as that of the first guide space (123).

10. The linear motor (100) of claim 7, characterized in that, The radial outer peripheral wall of the guide column (212) is provided with a placing groove (215), the secondary coupling (22) is arranged in the placing groove (215), and in the axial direction of the guide column (212), the two ends of the secondary coupling (22) are respectively stopped against the first matching protrusion (2121) and the inner end face of the placing groove (215).

11. The linear motor (100) of claim 8, characterized in that, The guide bearing (3) located between the primary support (11) and the housing part (211) is defined as a second guide bearing (32); The inner wall of the housing part (211) is provided with the second guide bearing (32), and the second guide bearing (32) is arranged on the outer side of the second part (11b) to guide cooperation with the second part (11b).

12. Linear motor (100) according to claim 11, characterized in that The outer diameter of the second part (11b) is greater than that of the first part (11a), and the second guide bearing (32) is in guiding cooperation with the outer peripheral wall of the second part (11b).

13. The linear motor (100) of claim 1, characterized in that, The outer peripheral wall of the primary support (11) is provided with a first limiting protrusion (112), the outer peripheral wall of the secondary support (21) is provided with a second limiting protrusion (214), and the first limiting protrusion (112) and the second limiting protrusion (214) are arranged in axial opposition and spacing.

14. A suspension system (1000) characterized by, The linear motor (100) according to any one of claims 1-13.

15. The suspension system (1000) according to claim 14, characterized in that The outer peripheral wall of the primary support (11) is provided with a first limiting protrusion (112), and the outer peripheral wall of the secondary support (21) is provided with a second limiting protrusion (214); The suspension system (1000) further comprises a damping spring (200), the damping spring (200) is sleeved on the outer side of the primary assembly (1), and the two ends of the damping spring (200) are respectively connected with the first limiting protrusion (112) and the second limiting protrusion (214).

16. A vehicle characterized by comprising: Comprising: The suspension system (1000) according to claim 14 or 15. Comprising:

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