Linear motor, electromagnetic suspension and vehicle

Abstract

The invention discloses a linear motor, an electromagnetic suspension and a vehicle, the linear motor comprises a primary assembly, the primary assembly comprises a core shaft and a winding sleeving the core shaft, and the core shaft defines an accommodating chamber; at least part of the conductive assembly is arranged in the containing cavity and fixedly connected with the mandrel, and the conductive assembly is electrically connected with the winding and the motor controller. Therefore, by arranging the conductive assembly and fixedly connecting the conductive assembly with the mandrel, the conductive assembly can be firmly installed, so that the connection between the conductive assembly and the motor controller can be stable, the connection between the linear motor and the motor controller can be stable, and the use safety and use reliability of the linear motor can be improved; at least part of the conductive component is arranged in the accommodating cavity, so that the space utilization rate is improved, and the miniaturization design of the linear motor is realized.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a linear motor, an electromagnetic suspension and a vehicle. Background Art

[0002] In the related art, the linear motor uses a wire-swinging method to lead out the cable and electrically connect it to other components. This method causes the connection between the linear motor and other components (such as the motor controller) to be unstable, resulting in low safety and reliability in the use of the linear motor. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a linear motor with high safety and reliability in use.

[0004] The present invention further proposes an electromagnetic suspension.

[0005] The present invention further provides a vehicle.

[0006] According to the present invention, the linear motor includes: a primary component, the primary component includes a core shaft and a winding arranged on the core shaft, and the core shaft defines a accommodating chamber; a conductive component, at least a portion of the conductive component is arranged in the accommodating chamber and fixedly connected to the core shaft, and the conductive component is electrically connected to the winding and the motor controller respectively.

[0007] According to the linear motor of the present invention, by providing a conductive component and fixedly connecting the conductive component to the core shaft, the conductive component can be firmly installed, thereby making the connection between the conductive component and the motor controller stable, and the connection between the linear motor and the motor controller stable, which is beneficial to improving the safety and reliability of the use of the linear motor. Moreover, by arranging at least part of the conductive component in the accommodating chamber, it is beneficial to improve the space utilization rate, thereby facilitating the miniaturization design of the linear motor.

[0008] In some examples of the present invention, the core shaft has a connecting protrusion, the connecting protrusion is located in the accommodating chamber and connected to the inner wall of the accommodating chamber, and the conductive component can be fixedly connected to the connecting protrusion.

[0009] In some examples of the present invention, the connecting protrusion includes a first sub-body and a second sub-body, one end of the first sub-body is connected to the inner wall of the accommodating chamber, the other end opposite to the first sub-body extends toward the inner side of the accommodating chamber, and the second sub-body is arranged at the other end opposite to the first sub-body, and the conductive component can be fixedly connected to the second sub-body.

[0010] In some examples of the present invention, the second sub-body is configured as a cylinder, and along the axial direction of the core shaft, the axial dimension of the second sub-body is greater than the axial dimension of the first sub-body.

[0011] In some examples of the present invention, at least a portion of the first sub-body is configured as an arc segment.

[0012] In some examples of the present invention, along the axial direction of the core shaft, one end of the conductive component close to the bottom of the accommodating chamber has a connecting portion, and the lead wire of the winding is connected to the connecting portion.

[0013] In some examples of the present invention, there are three connecting portions, and the three connecting portions are evenly spaced apart along the circumferential direction of the core shaft.

[0014] In some examples of the present invention, along the axial direction, the orthographic projection of the connecting portion and the orthographic projection of the connecting protrusion are completely offset.

[0015] In some examples of the present invention, the linear motor further includes: an electrical connector electrically connected between the corresponding lead wires and the connecting portion.

[0016] In some examples of the present invention, the core shaft has a connecting through hole, and the electrical connector is inserted into the connecting through hole.

[0017] In some examples of the present invention, the linear motor further includes: a seal, which is sandwiched between the conductive component and the inner wall of the accommodating chamber.

[0018] In some examples of the present invention, the outer peripheral wall of the conductive component has an annular mounting groove, and at least a portion of the sealing member is disposed in the mounting groove.

[0019] In some examples of the present invention, along the axial direction of the core shaft, the distance between the seal and the end of the conductive component away from the bottom of the accommodating chamber is A, and the distance between the seal and the end of the conductive component close to the bottom of the accommodating chamber is B, satisfying the relationship: A<B.

[0020] In some examples of the present invention, the outer peripheral wall of the conductive component has supporting ribs.

[0021] In some examples of the present invention, the support rib is constructed as an arc-shaped structure, and there are multiple support ribs, and the multiple support ribs are arranged at intervals along the axial direction of the core shaft.

[0022] In some examples of the present invention, the inner diameter of the accommodating chamber is C, which satisfies the relationship: 10 mm ≤ C ≤ 40 mm.

[0023] In some examples of the present invention, the conductive assembly includes a plurality of conductive bars and an insulating member, the plurality of conductive bars are fixed to the insulating member, and the insulating member is fixedly connected to the connecting protrusion.

[0024] In some examples of the present invention, the connecting protrusion and the core shaft are an integral piece.

[0025] In some examples of the present invention, the insulating member includes a head, a pin portion, and a body portion connected between the head (211) and the pin portion; the conductive row includes a conductive head, a connecting portion, and a conductive body connected between the conductive head and the connecting portion, the conductive head is embedded in the head and partially exposed, the conductive body is embedded in the body portion, and the connecting portion is embedded in the pin portion and partially exposed.

[0026] In some examples of the present invention, the linear motor further comprises: a secondary assembly, the secondary assembly comprising an excitation assembly; the winding and the excitation assembly are coupled to drive the secondary assembly to move.

[0027] The electromagnetic suspension according to the present invention includes the above-mentioned linear motor.

[0028] A vehicle according to the present invention includes the electromagnetic suspension described above.

[0029] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0031] Figure 1 is a schematic diagram of the assembly of the primary component and the conductive component according to an embodiment of the present invention;

[0032] Figure 2 yes Figure 1 Enlarged view of point D in the middle;

[0033] Figure 3 is a cross-sectional view of a primary assembly and a conductive assembly according to an embodiment of the present invention;

[0034] Figure 4 yes Figure 3 Enlarged view of point E in the middle;

[0035] Figure 5 is a cross-sectional view of an electrical connector and a connecting portion according to an embodiment of the present invention;

[0036] Figure 6is a schematic diagram of a partial structure of a core shaft according to an embodiment of the present invention;

[0037] Figure 7 is a schematic diagram of a conductive component according to an embodiment of the present invention;

[0038] Figure 8 is a schematic diagram of a conductive component according to an embodiment of the present invention from another angle;

[0039] Figure 9 is a schematic diagram of a conductive component according to an embodiment of the present invention from another angle;

[0040] Figure 10 is a cross-sectional view of a linear motor according to an embodiment of the present invention;

[0041] Figure 11 is a cross-sectional view of an electromagnetic suspension according to an embodiment of the present invention.

[0042] Reference numerals:

[0043] Linear motor 100; electromagnetic suspension 200;

[0044] Primary assembly 10; core shaft 11; accommodating chamber 111; connecting protrusion 112; second mounting hole 1121; first sub-body 1122; second sub-body 1123;

[0045] Connecting through hole 113; winding 12; lead wire 121;

[0046] Conductive component 20; insulating member 21; head 211; first mounting hole 2112;

[0047] Pin portion 212; avoidance notch 2122;

[0048] Body part 213;

[0049] Conductive bar 22; connecting portion 221;

[0050] Mounting slot 23; avoidance slot 24; support rib 25; support rib 26;

[0051] Electrical connector 30; Sealing member 40;

[0052] Subassembly 50 . DETAILED DESCRIPTION

[0053] The following describes embodiments of the present invention in detail. 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 intended only to explain the present invention and are not to be construed as limiting the present invention.

[0054] Reference below Figures 1-9 A linear motor 100 according to an embodiment of the present invention will be described.

[0055] like Figures 1-9 As shown, the linear motor 100 according to the embodiment of the present invention includes: a primary component 10 and a conductive component 20 .

[0056] The primary assembly 10 includes a core shaft 11 and a winding 12. The winding 12 is disposed on the core shaft 11. That is, the core shaft 11 passes through the winding 12. The core shaft 11 defines a receiving chamber 111. One end of the receiving chamber 111 is open. Figure 3 and Figure 6 As shown, along the axial direction of the core shaft 11 (ie Figure 3 The upper end of the accommodating chamber 111 is open.

[0057] At least a portion of the conductive component 20 is disposed within the accommodating chamber 111. In some embodiments of the present application, the entire structure of the conductive component 20 is disposed within the accommodating chamber 111. In some embodiments of the present application, a portion of the conductive component 20 is disposed within the accommodating chamber 111, another portion of the conductive component 20 is disposed outside the accommodating chamber 111, and another portion of the conductive component 20 extends from the upper end of the accommodating chamber 111.

[0058] The conductive component 20 is fixedly connected to the core shaft 11. As some embodiments of the present application, the conductive component 20 and the core shaft 11 can be fixedly connected by means of, but not limited to, screw connection, clip connection, etc.

[0059] The conductive component 20 is electrically connected to the winding 12 and the motor controller, that is, the conductive component 20 is electrically connected to the winding 12, and the conductive component 20 is electrically connected to the motor controller. As some embodiments of the present application, along the axial direction of the core shaft 11 (i.e. Figure 3 The Z direction shown in FIG), one end of the conductive component 20 is electrically connected to the winding 12, and the other end of the conductive component 20 is electrically connected to the motor controller. As a specific embodiment of the present application, along the axial direction of the core shaft 11 (i.e. Figure 3 In the Z direction shown in the figure), the lower end of the conductive component 20 (i.e., the end of the conductive component 20 relatively close to the bottom of the accommodating chamber 111) is electrically connected to the winding 12, and the upper end of the conductive component 20 (i.e., the end of the conductive component 20 relatively far from the bottom of the accommodating chamber 111) is electrically connected to the motor controller.

[0060] By fixedly connecting the conductive component 20 to the core shaft 11, the conductive component 20 can be firmly installed, and the amplitude of the conductive component 20 shaking relative to the core shaft 11 during use can be reduced. The conductive component 20 and the core shaft 11 can even be kept relatively still under most usage conditions, thereby making the connection between the conductive component 20 and the motor controller stable, and making the connection between the conductive component 20 and the winding 12 stable, thereby enabling the linear motor 100 to work normally even under harsh road conditions.

[0061] Therefore, by setting the conductive component 20 and fixing the conductive component 20 to the core shaft 11, the conductive component 20 can be firmly installed, thereby making the connection between the conductive component 20 and the motor controller stable, and making the connection between the linear motor 100 and the motor controller stable, which is beneficial to improving the safety and reliability of the use of the linear motor 100. Moreover, by arranging at least part of the conductive component 20 in the accommodating chamber 111, it is beneficial to improve the space utilization, thereby facilitating the miniaturization design of the linear motor 100.

[0062] In some embodiments of the present invention, the conductive component 20 is fixedly connected to the core shaft 11 by a connector. In some embodiments of the present application, the connector can be configured as a screw connector, for example, the connector can be configured as a bolt, and the conductive component 20 and the core shaft 11 can be fixedly connected by the bolt, for example Figure 6 and Figure 7 As shown, the conductive component 20 can have a first mounting hole 2112, and the core shaft 11 can have a second mounting hole 1121. Bolts can be inserted into the first mounting hole 2112 and the second mounting hole 1121 to securely connect the conductive component 20 to the core shaft 11. In some embodiments of the present application, the second mounting hole 1121 can be configured as a threaded hole. This configuration can simplify the installation and removal of the conductive component 20 and the core shaft 11, reducing the difficulty of assembly and removal of the conductive component 20 and the core shaft 11, thereby reducing the difficulty of assembly and removal of the linear motor 100, thereby improving production efficiency and facilitating after-sales maintenance.

[0063] In some embodiments of the present invention, Figure 6 As shown, the core shaft 11 has a connecting protrusion 112 , which is located in the accommodating chamber 111 , and the connecting protrusion 112 is connected to the inner wall of the accommodating chamber 111 , and the conductive component 20 can be fixedly connected to the connecting protrusion 112 .

[0064] One end of the connecting protrusion 112 may be connected to the inner wall of the accommodating chamber 111, and the other end of the connecting protrusion 112 may extend toward the inside of the accommodating chamber 111. In some embodiments of the present application, the conductive component 20 may have a first mounting hole 2112, and the connecting protrusion 112 may have a second mounting hole 1121. Bolts may be inserted through the first mounting hole 2112 and the second mounting hole 1121 to securely connect the conductive component 20 to the core shaft 11.

[0065] By providing the core shaft 11 with a connecting protrusion 112, the conductive component 20 can be conveniently fixedly connected to the core shaft 11. Moreover, by locating the connecting protrusion 112 in the accommodating chamber 111, the external space of the core shaft 11 is not occupied, which is conducive to improving space utilization.

[0066] As some embodiments of this application, Figure 6 As shown, the number of the connecting protrusions 112 can be set to multiple, for example, the number of the connecting protrusions 112 can be set to two. By setting the number of the connecting protrusions 112 to multiple, the installation firmness of the conductive component 20 can be improved.

[0067] In some embodiments of the present invention, the connecting protrusion 112 and the core shaft 11 are integrally formed, that is, the connecting protrusion 112 and the core shaft 11 are a one-piece molded component. This one-piece molded component has high structural strength. By integrally forming the connecting protrusion 112 and the core shaft 11, the probability of separation of the connecting protrusion 112 and the core shaft 11 can be reduced. Furthermore, by integrally forming the connecting protrusion 112 and the core shaft 11, the integration of the core shaft 11 can be improved, which can simplify the assembly of the components of the primary assembly 10, thereby simplifying the assembly of the components of the linear motor 100, and facilitating improved production and assembly efficiency of the linear motor 100.

[0068] In some embodiments of the present invention, Figure 6 As shown, the connecting protrusion 112 includes a first sub-body 1122 and a second sub-body 1123, wherein one end of the first sub-body 1122 is connected to the inner wall of the accommodating chamber 111, and the other end opposite to the first sub-body 1122 extends toward the inner side of the accommodating chamber 111, and the second sub-body 1123 is arranged at the other end opposite to the first sub-body 1122, that is, one end of the first sub-body 1122 is connected to the inner wall of the accommodating chamber 111, and the other end opposite to the first sub-body 1122 is connected to the second sub-body 1123, and the conductive component 20 can be fixedly connected to the second sub-body 1123.

[0069] In some embodiments of the present application, the conductive component 20 may have a first mounting hole 2112, the second sub-body 1123 may have a second mounting hole 1121, and a connector (e.g., a bolt) may be inserted through the first mounting hole 2112 and the second mounting hole 1121 to securely connect the conductive component 20 to the core shaft 11. This arrangement allows the second sub-body 1123, which is securely connected to the conductive component 20, to be positioned closer to the inner side of the accommodating chamber 111, allowing the connection between the connector (e.g., a bolt) and the conductive component 20 to be closer to the center of the conductive component 20, thereby improving the stability of the connection between the conductive component 20 and the core shaft 11.

[0070] In some embodiments of the present invention, Figure 6 As shown, the second sub-body 1123 is constructed as a cylinder, along the axial direction of the core shaft 11 (ie Figure 3 The axial dimension of the second sub-body 1123 is greater than the axial dimension of the first sub-body 1122, that is, along the axial direction of the core shaft 11 (ie Figure 3 In the Z direction shown in the figure), the second sub-body 1123 is thicker than the first sub-body 1122. By constructing the second sub-body 1123 as a cylinder, it is beneficial to improve the connection stability between the conductive component 20 and the core shaft 11. Moreover, by making the axial dimension of the second sub-body 1123 larger than the axial dimension of the first sub-body 1122, the matching area between the connecting member (such as a bolt) and the connecting protrusion 112 can be made larger, which is beneficial to further improve the connection stability between the conductive component 20 and the core shaft 11.

[0071] In some embodiments of the present invention, Figure 6 As shown, at least a portion of the first sub-body 1122 is configured as an arc segment. In some embodiments of the present application, the entire structure of the first sub-body 1122 is configured as an arc segment. In some embodiments of the present application, a portion of the structure of the first sub-body 1122 is configured as an arc segment. By configuring at least a portion of the first sub-body 1122 as an arc segment, the structure of the first sub-body 1122 can be made reasonable. During the process of inserting at least a portion of the conductive component 20 into the accommodating chamber 111, the first sub-body 1122 can avoid the conductive component 20 and will not interfere with the conductive component 20. This can reduce the difficulty of assembling the conductive component 20 and the core shaft 11, and is conducive to improving the assembly efficiency of the conductive component 20 and the core shaft 11.

[0072] In some embodiments of the present invention, Figure 5 As shown, along the axial direction of the core shaft 11 (ie Figure 3 The conductive component 20 has a connecting portion 221 at one end close to the bottom of the accommodating chamber 111 , and the lead wire 121 of the winding 12 is connected to the connecting portion 221 .

[0073] As some embodiments of this application, Figure 5 As shown, the conductive assembly 20 may include a conductive bar 22, which includes a connecting portion 221. The connecting portion 221 is located at one end of the conductive assembly 20 near the bottom of the accommodating chamber 111. The lead wire 121 of the winding 12 is connected to the connecting portion 221. By connecting the lead wire 121 of the winding 12 to the connecting portion 221, the winding 12 and the conductive assembly 20 can be reliably electrically connected. Moreover, by locating the connecting portion 221 on the conductive assembly 20 near the bottom of the accommodating chamber 111, the length of the lead wire 121 of the winding 12 is shortened, thereby reducing the cost required to produce the winding 12.

[0074] In some embodiments of the present application, the lead wire 121 of the winding 12 is located radially outside the core shaft 11. In some embodiments of the present application, the winding 12 can be configured as a three-phase winding 12. In some embodiments of the present application, the lead wire 121 of the winding 12 and the connecting portion 221 can be welded together, which can ensure a reliable connection between the lead wire 121 of the winding 12 and the connecting portion 221. In some embodiments of the present application, the winding 12 can be configured as a six-phase winding 12.

[0075] In some embodiments of the present invention, there are three connecting portions 221, and the three connecting portions 221 can be evenly spaced along the circumferential direction of the core shaft 11. That is, along the circumferential direction of the core shaft 11, the angle between each two adjacent connecting portions 221 of the three connecting portions 221 is 120 degrees. In some embodiments of the present application, the winding 12 can be configured as a three-phase winding 12, and the three-phase winding 12 can have three lead wires 121. The three lead wires 121 of the three-phase winding 12 can be connected to the three connecting portions 221 respectively.

[0076] As some embodiments of the present application, the conductive component 20 may include three conductive rows 22 . The three conductive rows 22 may be evenly spaced along the circumferential direction of the core shaft 11 , and each conductive row 22 includes a connecting portion 221 .

[0077] This arrangement can make the arrangement of the three connecting parts 221 reasonable, and can facilitate connecting the lead wires 121 of the winding 12 to the three connecting parts 221 respectively.

[0078] In some embodiments of the present invention, along the axial direction of the core shaft 11 (ie Figure 3 The Z direction shown in FIG), the orthographic projection of the connecting portion 221 is completely offset from the orthographic projection of the connecting protrusion 112. Specifically, a plane is set that is parallel to the axial direction of the core shaft 11 (i.e. Figure 3 In other words, the normal of the plane is perpendicular to the axial direction of the core shaft 11 (ie Figure 3The orthographic projection of the connecting portion 221 on the plane is parallel to the Z direction shown in the figure, and the orthographic projection of the connecting protrusion 112 on the plane is completely staggered. In other words, the orthographic projection of the connecting portion 221 on the plane and the orthographic projection of the connecting protrusion 112 on the plane do not have an overlapping area.

[0079] In this way, when inserting at least part of the conductive component 20 into the accommodating chamber 111, the connecting portion 221 will not interfere with the connecting protrusion 112 provided in the accommodating chamber 111, thereby reducing the difficulty of assembling the conductive component 20 and the core shaft 11, which is conducive to improving the assembly efficiency of the conductive component 20 and the core shaft 11.

[0080] In some embodiments of the present invention, Figure 1 、 Figure 2 and Figure 5 As shown, the linear motor 100 further includes an electrical connector 30 , which is electrically connected between the corresponding lead wires 121 and the connecting portion 221 .

[0081] As some embodiments of the present application, the number of connecting parts 221 is three, and the three connecting parts 221 can be evenly spaced along the circumferential direction of the core shaft 11. The winding 12 can be constructed as a three-phase winding 12, and the three-phase winding 12 can have three lead wires 121. The number of electrical connectors 30 is three, and each electrical connector 30 is electrically connected between the corresponding lead wire 121 and the connecting part 221.

[0082] In some embodiments of the present application, the electrical connector 30 may have two opposite ends, one end of which may be welded to the corresponding lead wire 121, and the other end of which may be welded to the connecting portion 221. By providing the electrical connector 30, the lead wire 121 of the winding 12 and the connecting portion 221 may be electrically connected relatively easily.

[0083] In some embodiments of the present invention, Figure 2 As shown, the core shaft 11 has a connecting through hole 113 , and the electrical connector 30 is passed through the connecting through hole 113 .

[0084] Specifically, the connecting through hole 113 passes through the side wall of the core shaft 11, and the connecting through hole 113 is connected to the accommodating chamber 111, and the electrical connector 30 is passed through the connecting through hole 113, that is, the electrical connector 30 is set through the connecting through hole 113, and the opposite ends of the electrical connector 30 are respectively connected to the corresponding lead wires 121 and the connecting part 221.

[0085] As some embodiments of the present application, the number of connecting parts 221 is three, and the three connecting parts 221 can be evenly spaced along the circumferential direction of the core shaft 11. The winding 12 can be constructed as a three-phase winding 12, and the three-phase winding 12 can have three lead wires 121. The number of electrical connectors 30 is three, and the number of connecting through-holes 113 is three. The three electrical connectors 30 and the three connecting through-holes 113 are arranged in a one-to-one correspondence. In other words, the three electrical connectors 30 are respectively inserted into the three connecting through-holes 113, and each electrical connector 30 is electrically connected between the corresponding lead wire 121 and the connecting part 221. As some embodiments of the present application, the three connecting through-holes 113 can be evenly spaced along the circumferential direction of the core shaft 11. That is, along the circumferential direction of the core shaft 11, the angle between each adjacent two connecting through-holes 113 of the three connecting through-holes 113 is one hundred and twenty degrees.

[0086] By setting the connecting through hole 113, the electrical connector 30 can directly pass through the side wall of the core shaft 11 to connect with the connecting portion 221 of the conductive component 20, thereby shortening the length of the electrical connector 30 and saving the cost required to produce the electrical connector 30. Moreover, it is convenient to connect the electrical connector 30 with the connecting portion 221 of the conductive component 20, which is beneficial to improve the assembly efficiency of the primary component 10.

[0087] As some embodiments of the present application, along the axial direction of the core shaft 11 (ie Figure 3 The connecting through hole 113 is located at the bottom end of the accommodating chamber 111. In other words, along the axial direction of the core shaft 11 (ie, Figure 3 The connecting through hole 113 is located at one end of the accommodating chamber 111 close to the winding 12. By locating the connecting through hole 113 at the bottom end of the accommodating chamber 111, the position of the connecting through hole 113 can be rationalized, thereby further shortening the length of the electrical connector 30 and further reducing the cost of producing the electrical connector 30.

[0088] In some embodiments of the present invention, Figure 4 As shown, the linear motor 100 further includes: a seal 40, which is sandwiched between the conductive component 20 and the inner wall of the accommodating chamber 111. As some embodiments of the present application, the seal 40 can be sleeved on the outside of the conductive component 20 and sandwiched between the conductive component 20 and the inner wall of the accommodating chamber 111.

[0089] In some embodiments of the present application, the seal 40 can be configured as, but not limited to, an O-ring, a V-ring, a U-ring, etc. By providing the seal 40 sandwiched between the conductive assembly 20 and the inner wall of the accommodating chamber 111, the probability of water vapor, dust, impurities, etc. entering the accommodating chamber 111 through the gap between the conductive assembly 20 and the inner wall of the accommodating chamber 111 can be reduced, thereby improving the dustproof and waterproof performance of the primary assembly 10, thereby improving the reliability of the linear motor 100.

[0090] In some embodiments of the present invention, Figure 4 As shown, the outer peripheral wall of the conductive component 20 has an annular mounting groove 23, and at least a portion of the seal 40 is disposed in the mounting groove 23. The outer surface of the conductive component 20 can be recessed toward the inner side of the conductive component 20 along the radial direction of the core shaft 11 to form the annular mounting groove 23. The seal 40 can be constructed in an annular shape, and at least a portion of the seal 40 is disposed in the mounting groove 23. This arrangement facilitates the installation of the seal 40. Furthermore, during the use of the linear motor 100, due to the presence of the mounting groove 23, the seal 40 is less likely to shift in position, thereby improving the sealing reliability of the seal 40.

[0091] In some embodiments of the present invention, Figure 3 As shown, along the axial direction of the core shaft 11 (ie Figure 3 In the Z direction shown in the figure, the distance between the sealing member 40 and the end of the conductive component 20 away from the bottom of the accommodating chamber 111 is A, and the distance between the sealing member 40 and the end of the conductive component 20 close to the bottom of the accommodating chamber 111 is B. A and B can satisfy the relationship: A<B.

[0092] That is, along the axial direction of the core shaft 11 (i.e. Figure 3 The distance between the sealing member 40 and the conductive component 20 at one end away from the bottom of the accommodating chamber 111 is smaller than the distance between the sealing member 40 and the conductive component 20 at one end close to the bottom of the accommodating chamber 111. In other words, along the axial direction of the core shaft 11 (i.e. Figure 3 In the Z direction shown, the distance between the seal 40 and the upper end of the conductive assembly 20 is less than the distance between the seal 40 and the lower end of the conductive assembly 20. In short, the seal 40 is positioned relatively close to the upper end of the conductive assembly 20 (i.e., the seal 40 is relatively close to the end of the conductive assembly 20 that is away from the bottom of the accommodating chamber 111). This arrangement allows the seal 40 to be positioned in a reasonable position, significantly improving the dustproof and waterproof performance of the primary assembly 10, thereby facilitating improved reliability of the linear motor 100.

[0093] In some embodiments of the present invention, Figure 7-Figure 9As shown, the outer peripheral wall of the conductive component 20 has support ribs 25. By providing the outer peripheral wall of the conductive component 20 with support ribs 25, the structural strength of the conductive component 20 can be improved and the probability of deformation of the conductive component 20 can be reduced. Moreover, in some embodiments of the present application, at least one support rib 25 can abut against the inner wall surface of the accommodating chamber 111. The provision of the support rib 25 can enable the conductive component 20 disposed in the accommodating chamber 111 to be more accurately aligned along the axial direction of the core shaft 11 (i.e., the axial direction of the core shaft 11). Figure 3 The Z direction shown in the figure can reduce the probability of the conductive component 20 tilting.

[0094] In some embodiments of the present invention, Figure 7-Figure 9 As shown, the support rib 25 is constructed as an arc-shaped structure. By constructing the support rib 25 as an arc-shaped structure, the structural form of the support rib 25 can be reasonable, and the support rib 25 can be adapted to the inner wall of the accommodating chamber 111.

[0095] The number of the supporting ribs 25 can be set to be multiple, and the multiple supporting ribs 25 can be arranged along the axial direction of the core shaft 11 (ie Figure 3 The support ribs 25 may be arranged in an intermittent manner along the axial direction of the core shaft 11 (ie, the Z direction shown in FIG. Figure 3 The supporting ribs 25 are evenly spaced and arranged in the Z direction (as shown). By providing a plurality of supporting ribs 25, the structural strength of the conductive assembly 20 is further improved, and the probability of deformation of the conductive assembly 20 is further reduced. Furthermore, by providing a plurality of supporting ribs 25, the probability of tilting of the conductive assembly 20 is further reduced.

[0096] As some embodiments of this application, Figure 9 As shown, the outer peripheral wall of the conductive component 20 may have a supporting rib 26, and the supporting rib 26 may be arranged along the axial direction of the core shaft 11 (ie Figure 3 The support ribs 26 extend in the Z direction (as shown), and the support ribs 26 can be arranged orthogonally to the support ribs 25. In some embodiments of the present application, the number of support ribs 26 can be multiple, and the multiple support ribs 26 can be arranged at intervals along the circumferential direction of the core shaft 11. In some embodiments of the present application, among the multiple support ribs 26, at least one support rib 26 can be arranged orthogonally to the support rib 25. By providing the support ribs 26, the structural strength of the conductive component 20 can be further improved, and the probability of deformation of the conductive component 20 can be further reduced.

[0097] Moreover, as some embodiments of the present application, at least one supporting rib 26 can abut against the inner wall surface of the accommodating chamber 111. The arrangement of the supporting rib 26 can enable the conductive component 20 disposed in the accommodating chamber 111 to be more accurately aligned with the axial direction of the core shaft 11 (i.e., Figure 3 The Z direction shown in the figure can reduce the probability of the conductive component 20 tilting.

[0098] In some embodiments of the present invention, Figure 6 As shown, the inner diameter of the accommodating chamber 111 is C, and C can satisfy the relationship: 10mm≤C≤40mm. The accommodating chamber 111 can be constructed as a cylindrical cavity, and the inner diameter of the accommodating chamber 111 can be any value between 10mm and 40mm. For example, the inner diameter of the accommodating chamber 111 can be, but is not limited to, 10mm, 20mm, 30mm, 40mm, etc. This configuration can ensure a reasonable inner diameter of the accommodating chamber 111, allowing the accommodating chamber 111 to accommodate at least a portion of the conductive component 20, without making the inner diameter of the accommodating chamber 111 too large.

[0099] In some embodiments of the present invention, the conductive assembly 20 includes a plurality of conductive bars 22 and an insulating member 21 . The plurality of conductive bars 22 are fixed to the insulating member 21 , and the insulating member 21 is fixedly connected to the connecting protrusion 112 .

[0100] Among them, the conductive component 20 includes a conductive bar 22 and an insulating member 21. The main structure of the conductive component 20 can be the insulating member 21. The main structure of the conductive component 20 can be integrally injection molded. The number of conductive bars 22 is multiple. For example, the number of conductive bars 22 can be three. The multiple conductive bars 22 are all fixed to the insulating member 21. As some embodiments of the present application, the multiple conductive bars 22 can be embedded in the insulating member 21, and, as Figure 7-Figure 9 As shown, the insulating member 21 has an avoidance gap 2122 to expose a portion of the conductive bar 22 .

[0101] As some embodiments of the present application, the number of conductive rows 22 can be three, and the three conductive rows 22 can be evenly spaced along the circumferential direction of the core shaft 11. Each conductive row 22 includes a connecting portion 221, and the insulating part 21 has three avoidance gaps 2122. The three avoidance gaps 2122 are arranged in a one-to-one correspondence with the connecting portions 221 of the three conductive rows 22, so that the three connecting portions 221 are exposed to the insulating part 21, and the three electrical connectors 30 can extend into the avoidance gaps 2122 and be connected to the connecting portions 221 (for example, welded).

[0102] In addition, the insulating member 21 is connected to the connecting protrusion 112. As some embodiments of the present application, the insulating member 21 may have a first mounting hole 2112, the connecting protrusion 112 may have a second mounting hole 1121, and a connecting member (such as a bolt) may be passed through the first mounting hole 2112 and the second mounting hole 1121 to fix the conductive component 20 to the core shaft 11.

[0103] As some embodiments of the present application, the position where the insulating member 21 is fixedly connected to the connecting protrusion 112 can be located at the upper end of the conductive component 20 (i.e., the end away from the bottom of the accommodating chamber 111), and the arrangement position of the conductive row 22 can be located at the lower end of the conductive component 20 (i.e., the end close to the bottom of the accommodating chamber 111).

[0104] Such an arrangement can make the structure of the conductive component 20 reasonable, help reduce the occurrence of leakage accidents, and help improve the safety of the conductive component 20.

[0105] In some embodiments of the present invention, a plurality of conductive bars 22 are spaced apart along the circumferential direction of the core shaft 11 .

[0106] In some embodiments of the present application, the number of conductive bars 22 can be set to three, and the three conductive bars 22 can be evenly spaced along the circumferential direction of the core shaft 11. That is, along the circumferential direction of the core shaft 11, the angle between each two adjacent conductive bars 22 in the three conductive bars 22 is 120 degrees. Each conductive bar 22 includes a connecting portion 221. The winding 12 can be configured as a three-phase winding 12, and the three-phase winding 12 can have three lead wires 121. The number of electrical connectors 30 is three, and each electrical connector 30 is electrically connected between a corresponding lead wire 121 and the connecting portion 221 of the conductive bar 22. This arrangement can make the arrangement of the three conductive bars 22 reasonable, and can facilitate the connection of the lead wires 121 of the winding 12 to the three conductive bars 22 respectively.

[0107] In some embodiments of the present invention, Figure 7-Figure 9 As shown, the insulating member 21 includes a head portion 211 and a pin portion 212, and the insulating member 21 also includes a body portion 213, and the body portion 213 is connected between the head portion 211 and the pin portion 212. As some embodiments of the present application, along the axial direction of the core shaft 11 (i.e. Figure 3 The main body 213 is connected to the head 211 at one end, and the other end of the main body 213 is connected to the pin 212 at the other end. In some embodiments of the present application, the head 211, the pin 212, and the main body 213 are integrally formed, that is, the head 211, the pin 212, and the main body 213 are constructed as a single piece.

[0108] The conductive bar 22 includes a conductive head and a connecting portion 211. The conductive bar 22 also includes a conductive body connected between the conductive head and the connecting portion 211. As some embodiments of the present application, along the axial direction of the core shaft 11 (i.e. Figure 3 One end of the conductive body is connected to the conductive head, and the other end of the conductive body opposite to the conductive body is connected to the pin portion 212.

[0109] The conductive head is embedded in the head portion 211 and partially exposed in the head portion 211 . The conductive body is embedded in the main body 213 . The connecting portion 211 is embedded in the pin portion 212 and partially exposed in the pin portion 212 .

[0110] As some embodiments of the present application, the number of pin portions 212 is multiple, for example, the number of pin portions 212 is three, and the three pin portions 212 are evenly spaced along the circumferential direction of the core shaft 11; the number of connecting portions 211 is multiple, for example, the number of connecting portions 211 is three, and the three connecting portions 211 are evenly spaced along the circumferential direction of the core shaft 11; the three connecting portions 211 are respectively embedded in the three pin portions 212, and each pin portion 212 has an avoidance notch 2122 so that part of the connecting portion 211 is exposed to the pin portion 212.

[0111] As some embodiments of this application, Figure 7-Figure 9 As shown, the conductive component 20 may have an escape groove 24, and the escape groove 24 may be along the axial direction of the core shaft 11 (ie Figure 3 The avoidance groove 24 extends in the Z direction (as shown), and the avoidance groove 24 can be used to avoid the connecting protrusion 112. Specifically, when at least a portion of the conductive component 20 is placed in the accommodating chamber 111, the conductive component 20 slides from the open end of the accommodating chamber 111 into the accommodating chamber 111, and the avoidance groove 24 can avoid the connecting protrusion 112. In other words, the connecting protrusion 112 can slide within the avoidance groove 24, so that the conductive component 20 and the connecting protrusion 112 can avoid each other, thereby preventing the connecting protrusion 112 and the conductive component 20 from interfering with each other and affecting the assembly of the conductive component 20. Moreover, the provision of the avoidance groove 24 is also helpful in reducing the weight of the conductive component 20 and saving materials.

[0112] As some embodiments of the present application, the number of pin portions 212 can be multiple, and the multiple pin portions 212 can be evenly spaced along the circumferential direction of the core shaft 11. Moreover, there is no physical structure between each adjacent two pin portions 212 along the circumferential direction of the core shaft 11. This is beneficial to reducing the weight of the conductive component 20 and saving materials.

[0113] As some embodiments of this application, Figure 9 As shown, the number of the support ribs 25 can be set to multiple, and the multiple support ribs 25 can be arranged along the axial direction of the core shaft 11 (ie Figure 3 Furthermore, a portion of the solid structure may be omitted between each two adjacent support ribs 25, which is beneficial to reducing the weight of the conductive component 20 and saving materials.

[0114] As some embodiments of the present application, the number of conductive rows 22 can be set to six, and the six conductive rows 22 can be evenly spaced along the circumferential direction of the core shaft 11, that is, along the circumferential direction of the core shaft 11, the angle between each two adjacent conductive rows 22 in the six conductive rows 22 is sixty degrees, each conductive row 22 includes a connecting portion 221, the winding 12 can be constructed as a six-phase winding 12, the six-phase winding 12 can have six lead wires 121, the number of electrical connectors 30 is six, each electrical connector 30 is electrically connected between the corresponding lead wire 121 and the connecting portion 221 of the conductive row 22, and the number of pin portions 212 can be set to six, and the six conductive rows 22 can be respectively embedded in the six pin portions 212.

[0115] In some embodiments of the present invention, the linear motor 100 further includes a secondary assembly 50, which includes an excitation assembly. The winding 12 and the excitation assembly are coupled to drive the secondary assembly 50 to move. In some embodiments of the present application, the secondary assembly 50 is cylindrical and is sleeved radially outside the primary assembly 10. The excitation assembly of the secondary assembly 50 is coupled to the primary assembly 10 to enable the secondary assembly 50 to reciprocate relative to the primary assembly 10, thereby driving the load to achieve linear motion.

[0116] According to the electromagnetic suspension 200 of the present invention, it includes the above-mentioned linear motor 100. Since the electromagnetic suspension 200 includes the above-mentioned linear motor 100, according to the linear motor 100 of the present invention, by providing a conductive component 20 and fixing the conductive component 20 to the core shaft 11, the conductive component 20 can be firmly installed, thereby making the connection between the conductive component 20 and the motor controller stable, and making the connection between the linear motor 100 and the motor controller stable, which is beneficial to improving the safety and reliability of the use of the linear motor 100. Moreover, by arranging at least a part of the conductive component 20 in the accommodating chamber 111, it is beneficial to improve the space utilization rate, thereby facilitating the miniaturization design of the linear motor 100.

[0117] According to the vehicle of the present invention, it includes the electromagnetic suspension 200 mentioned above. Since the vehicle includes the electromagnetic suspension 200 mentioned above, the electromagnetic suspension 200 includes the linear motor 100 mentioned above. According to the linear motor 100 of the present invention, by providing a conductive component 20 and fixing the conductive component 20 to the core shaft 11, the conductive component 20 can be firmly installed, thereby making the connection between the conductive component 20 and the motor controller stable, and making the connection between the linear motor 100 and the motor controller stable, which is beneficial to improving the safety and reliability of the use of the linear motor 100. Moreover, by arranging at least a part of the conductive component 20 in the accommodating chamber 111, it is beneficial to improve the space utilization rate, thereby facilitating the miniaturization design of the linear motor 100.

[0118] In the description of the present invention, 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 to 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 invention and simplifying the description, rather than indicating or implying 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 limiting the present invention.

[0119] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0120] In the description of the present invention, "plurality" means two or more.

[0121] In the description of the present invention, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features being in contact with each other via another feature instead of being in direct contact with each other.

[0122] In the description of the present invention, “on”, “above” and “above” a first feature of a second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0123] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses 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.

[0124] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A linear motor (100), characterized in that: include: A primary assembly (10), the primary assembly (10) comprising a core shaft (11) and a winding (12) sheathed on the core shaft (11), wherein the core shaft (11) defines a receiving chamber (111); A conductive component (20), at least a portion of which is disposed in the accommodating chamber (111) and fixedly connected to the core shaft (11), and the conductive component (20) is electrically connected to the winding (12) and the motor controller, respectively.

2. The linear motor (100) according to claim 1, characterized in that The core shaft (11) has a connecting protrusion (112), the connecting protrusion (112) is located in the accommodating chamber (111) and connected to the inner wall of the accommodating chamber (111), and the conductive component (20) can be fixedly connected to the connecting protrusion (112).

3. The linear motor (100) according to claim 2, characterized in that The connecting protrusion (112) includes a first sub-body (1122) and a second sub-body (1123), one end of the first sub-body (1122) is connected to the inner wall of the accommodating chamber (111), the other end of the first sub-body (1122) extends toward the inside of the accommodating chamber (111), and the second sub-body (1123) is arranged at the other end of the first sub-body (1122), and the conductive component (20) can be fixedly connected to the second sub-body (1123).

4. The linear motor (100) according to claim 3, characterized in that The second sub-body (1123) is constructed as a cylinder, and along the axial direction of the core shaft (11), the axial dimension of the second sub-body (1123) is greater than the axial dimension of the first sub-body (1122).

5. The linear motor (100) according to claim 3, characterized in that At least a portion of the first sub-body (1122) is constructed as an arc segment.

6. The linear motor (100) according to claim 2, characterized in that Along the axial direction of the core shaft (11), one end of the conductive component (20) close to the bottom of the accommodating chamber (111) has a connecting portion (221), and the lead wire (121) of the winding (12) is connected to the connecting portion (221).

7. The linear motor (100) according to claim 6, characterized in that There are three connecting portions (221), and the three connecting portions (221) are evenly spaced along the circumferential direction of the core shaft (11).

8. The linear motor (100) according to claim 6, characterized in that Along the axial direction, the orthographic projection of the connecting portion (221) and the orthographic projection of the connecting protrusion (112) are completely offset.

9. The linear motor (100) according to claim 6, characterized in that Also includes: An electrical connector (30) is electrically connected between the corresponding lead wire (121) and the connecting portion (221).

10. The linear motor (100) according to claim 9, characterized in that The core shaft (11) has a connecting through hole (113), and the electrical connector (30) is inserted into the connecting through hole (113).

11. The linear motor (100) according to claim 1, characterized in that Also includes: A sealing member (40) is sandwiched between the conductive component (20) and the inner wall of the accommodating chamber (111).

12. The linear motor (100) according to claim 11, characterized in that The outer peripheral wall of the conductive component (20) has an annular installation groove (23), and at least a portion of the sealing member (40) is disposed in the installation groove (23).

13. The linear motor (100) according to claim 11, characterized in that Along the axial direction of the core shaft (11), the distance between the sealing member (40) and the end of the conductive component (20) away from the bottom of the accommodating chamber (111) is A, and the distance between the sealing member (40) and the end of the conductive component (20) close to the bottom of the accommodating chamber (111) is B, satisfying the relationship: A<B.

14. The linear motor (100) according to any one of claims 1 to 13, characterized in that: The outer peripheral wall of the conductive component (20) has supporting ribs (25).

15. The linear motor (100) according to claim 14, characterized in that The support rib (25) is constructed as an arc-shaped structure, and there are multiple support ribs (25), and the multiple support ribs (25) are arranged at intervals along the axial direction of the core shaft (11).

16. The linear motor (100) according to any one of claims 1 to 13, characterized in that: The inner diameter of the accommodating chamber (111) is C, which satisfies the relationship: 10 mm ≤ C ≤ 40 mm.

17. The linear motor (100) according to claim 1, characterized in that The conductive assembly (20) comprises a plurality of conductive bars (22) and an insulating member (21), wherein the plurality of conductive bars (22) are fixed to the insulating member (21), and the insulating member (21) is fixedly connected to the connecting protrusion (112).

18. The linear motor (100) according to claim 2, characterized in that The connecting protrusion (112) and the core shaft (11) are an integral piece.

19. The linear motor (100) according to claim 17, characterized in that The insulating member (21) comprises a head portion (211), a pin portion (212), and a body portion (213) connected between the head portion (211) and the pin portion (212); The conductive bar (22) comprises a conductive head, a connecting portion (221), and a conductive body connected between the conductive head and the connecting portion (221); the conductive head is embedded in the head portion (211) and is partially exposed; the conductive body is embedded in the main body portion (213); and the connecting portion (221) is embedded in the pin portion (212) and is partially exposed.

20. The linear motor (100) according to claim 1, characterized in that Also included: a secondary assembly (50), the secondary assembly (50) including an excitation assembly; The winding (12) and the excitation assembly are coupled to drive the secondary assembly (50) to move.

21. An electromagnetic suspension (200), characterized in that: The electromagnetic suspension (200) comprises a linear motor (100) according to any one of claims 1-20.

22. A vehicle, characterized in that: Comprising the electromagnetic suspension (200) according to claim 21.

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