Stator mandrel, stator assembly, linear motor, electromagnetic suspension and vehicle

Abstract

The utility model discloses a stator mandrel, a stator assembly, a linear motor, an electromagnetic suspension and a vehicle. The stator core shaft is internally provided with a cavity, the shaft wall of the stator core shaft is provided with a through hole communicated with the cavity, the peripheral surface of the stator core shaft is further provided with a limiting protrusion protruding outwards in the radial direction, and the through hole and the limiting protrusion are located at the same height in the axial direction of the stator core shaft. According to the stator core shaft provided by the utility model, the through hole and the limiting bulge are arranged at the same height in the axial direction of the stator core shaft, so that the axial space of the stator core shaft can be saved, and the problem that the strength of the stator core shaft is greatly reduced due to the arrangement of the through hole can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and in particular to a stator core shaft, a stator assembly having the stator core shaft, a linear motor having the stator assembly, an electromagnetic suspension having the linear motor, and a vehicle having the electromagnetic suspension. Background Art

[0002] In the related art, the stator core shaft of the linear motor or electromagnetic suspension has a cavity inside, the shaft wall of the stator core shaft is provided with a through hole connected to the cavity, and the stator core shaft is also provided with a limit structure, resulting in a large axial length of the stator core shaft. In addition, the provision of the through hole reduces the strength of the stator core shaft. Therefore, there is room for improvement. Utility Model Content

[0003] The utility model aims to solve at least one of the above technical problems in the prior art to a certain extent. To this end, the utility model proposes a stator core shaft, which can alleviate the problem of a large axial length of the stator core shaft caused by the provision of a through hole and a limiting structure.

[0004] The utility model also provides a stator assembly with the stator core shaft.

[0005] The utility model also provides a linear motor with the stator assembly.

[0006] The utility model also provides an electromagnetic suspension with the linear motor.

[0007] The utility model also provides a vehicle with the electromagnetic suspension.

[0008] According to the embodiment of the utility model, the interior of the stator core shaft has a cavity, the axial wall of the stator core shaft is provided with a through hole connected to the cavity, and the outer peripheral surface of the stator core shaft is also provided with a limiting protrusion protruding radially outward. In the axial direction of the stator core shaft, the through hole and the limiting protrusion are located at the same height.

[0009] According to the stator core shaft of the embodiment of the utility model, by setting the through hole and the limiting protrusion at the same height in the axial direction of the stator core shaft, the axial space of the stator core shaft can be saved, and it is helpful to alleviate the problem of significant strength reduction of the stator core shaft caused by setting the through hole.

[0010] According to some embodiments of the present invention, there are a plurality of through holes, and the plurality of through holes are dispersedly arranged around the circumference of the stator core shaft.

[0011] According to some embodiments of the present invention, there are three through holes, and the interval between any two adjacent through holes is 120°.

[0012] According to some embodiments of the present invention, the stator core shaft includes a first rod segment located on one axial side of the limiting protrusion and a second rod segment located on the other axial side of the limiting protrusion; in the axial direction of the stator core shaft, the bottom surface of one end of the through hole close to the second rod segment is flush with the end surface of one end of the limiting protrusion close to the second rod segment.

[0013] According to the second aspect of the utility model, the stator assembly includes: a conductive component, a winding and the above-mentioned stator core shaft, the conductive component is at least partially installed in the cavity, the winding is sleeved on the outer periphery of the stator core shaft, the winding includes a winding lead-out portion, and the winding lead-out portion and the conductive component are connected via the through hole.

[0014] According to some embodiments of the present invention, the stator assembly also includes a transition piece, which passes through the through hole, a first end of the transition piece extends into the cavity and is electrically connected to the conductive component, and a second end of the transition piece extends to the outside of the stator core shaft and is electrically connected to the winding.

[0015] According to the stator assembly of the embodiment of the utility model, the stator core shaft can save axial space of the stator core shaft by setting the through hole and the limiting protrusion at the same height in the axial direction of the stator core shaft, and is conducive to alleviating the problem of significant strength reduction of the stator core shaft caused by setting the through hole. The winding is connected to the conductive component through the adapter, and the electrical energy of the winding can be transmitted to other locations through the adapter and the conductive component.

[0016] According to some embodiments of the present invention, an axial dimension of the through hole is greater than an axial dimension of the limiting protrusion so as to separate the limiting protrusions in the circumferential direction.

[0017] According to some embodiments of the present invention, the conductive component includes a conductive wire row, and the first end of the adapter is electrically connected to the conductive wire row.

[0018] According to some embodiments of the present invention, the conductive wire array has a connection hole, and the first end of the adapter is inserted into the connection hole and is welded and fixed to the conductive wire array.

[0019] According to some embodiments of the utility model, the conductive component further includes an insulating member, which is wrapped around the outer side of the conductive wire row in the radial direction of the stator core shaft, and a notch is provided on the insulating member, which connects the through hole and the connecting hole.

[0020] According to some embodiments of the utility model, the conductive component further includes an insulating member, which is wrapped around the outer side of the conductive wire row in the radial direction of the stator core shaft, and an escape space is formed between the insulating member and the cavity wall of the cavity, and the escape space is used to avoid a fixing member connecting the insulating member and the stator core shaft.

[0021] According to some embodiments of the utility model, the conductive component further includes an insulating member, which is wrapped around the outer side of the conductive wire row in the radial direction of the stator core shaft, and an outer peripheral surface of the insulating member is provided with outwardly protruding ribs, which abut against the cavity wall of the cavity.

[0022] According to some embodiments of the utility model, the stator core shaft has an outlet port connected to the cavity, the conductive component extends out of the stator core shaft through the outlet port, and the matching portion between the conductive component and the outlet port is sealed by a sealing structure.

[0023] The linear motor according to the embodiment of the third aspect of the utility model includes the above-mentioned stator assembly.

[0024] According to some embodiments of the utility model, the linear motor further comprises: a connector wire end, the connector wire end being arranged at one end of the stator core shaft in the axial direction, the connector wire end being suitable for electrically connecting the conductive component with the motor controller.

[0025] According to the linear motor of the embodiment of the utility model, the stator core shaft of the stator assembly can save axial space of the stator core shaft by setting the through hole and the limiting protrusion at the same height in the axial direction of the stator core shaft, and is conducive to alleviating the problem of significant strength reduction of the stator core shaft caused by setting the through hole. The winding is connected to the conductive component through the adapter, and the electrical energy of the winding can be transmitted to other locations through the adapter and the conductive component.

[0026] The electromagnetic suspension according to the fourth aspect of the present invention includes the above-mentioned linear motor.

[0027] According to the electromagnetic suspension of the embodiment of the utility model, the stator core shaft of the linear motor can save the axial space of the stator core shaft by setting the through hole and the limiting protrusion at the same height in the axial direction of the stator core shaft, and it is helpful to alleviate the problem of significant strength reduction of the stator core shaft caused by setting the through hole. The winding is connected to the conductive component through the adapter, and the electrical energy of the winding can be transmitted to other positions through the adapter and the conductive component.

[0028] A vehicle according to an embodiment of the fifth aspect of the utility model includes the above-mentioned electromagnetic suspension.

[0029] According to the vehicle of the fourth aspect of the utility model, the stator core shaft of the electromagnetic suspension can save the axial space of the stator core shaft by setting the through hole and the limiting protrusion at the same height in the axial direction of the stator core shaft, and is conducive to alleviating the problem of a large reduction in strength of the stator core shaft caused by setting the through hole. The winding is connected to the conductive component through the adapter, and the electrical energy of the winding can be transmitted to other locations through the adapter and the conductive component.

[0030] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a three-dimensional schematic diagram of a stator core shaft, a conductive component, and a transition piece according to an embodiment of the utility model;

[0032] Figure 2 yes Figure 1 A local enlarged schematic diagram of the middle A;

[0033] Figure 3 It is a top view of the stator core shaft, the conductive component, and the adapter according to an embodiment of the utility model;

[0034] Figure 4 yes Figure 3 Sectional view of the middle BB section;

[0035] Figure 5 yes Figure 4 A partial enlarged schematic diagram of point C in the middle;

[0036] Figure 6 is a three-dimensional schematic diagram of a conductive component according to an embodiment of the utility model;

[0037] Figure 7 yes Figure 6 A partial enlarged schematic diagram of point D in the middle;

[0038] Figure 8 is another three-dimensional schematic diagram of a conductive component according to an embodiment of the utility model;

[0039] Fig. 9 is a front view of a conductive component according to an embodiment of the utility model;

[0040] Fig.10 This is a schematic diagram of the connection between the conductive component and the adapter according to an embodiment of the utility model;

[0041] Fig.11 is a top view of a conductive component and an adapter according to an embodiment of the utility model;

[0042] Fig.12 yes Fig.11 Cross-sectional view of the EE section;

[0043] Fig.13 yes Fig.12 A partial enlarged schematic diagram of point F in the middle;

[0044] Fig.14 is a three-dimensional schematic diagram of a stator assembly according to an embodiment of the utility model;

[0045] Fig.15 is a top view of a stator assembly according to an embodiment of the utility model;

[0046] Fig.16 yes Fig.15 Cross-sectional view of section GG;

[0047] Fig.17 yes Fig.16 A partial enlarged schematic diagram of the J in the middle;

[0048] Fig.18 is a three-dimensional schematic diagram of an adapter according to an embodiment of the utility model;

[0049] Fig.19 is a front view of an adapter according to an embodiment of the utility model;

[0050] Fig. 20 is a top view of an adapter according to an embodiment of the utility model;

[0051] Fig.21a It is a schematic diagram of a shape of a welded part;

[0052] Figure 21b It is a schematic diagram of another shape of the welded portion;

[0053] Fig.21c is a schematic diagram of another shape of the weld;

[0054] Fig.21d It is a schematic diagram of another shape of the welding part;

[0055] Fig. 22 is a three-dimensional schematic diagram of a stator core shaft according to an embodiment of the utility model;

[0056] Fig.23 is a cross-sectional view of a stator core shaft according to an embodiment of the utility model;

[0057] Fig.24 is a schematic diagram of an electromagnetic suspension including a linear motor according to an embodiment of the utility model;

[0058] Fig.25 yes Fig.24 A partial enlarged schematic diagram of the M in the middle;

[0059] Fig.26 Schematic diagram of a vehicle according to an embodiment of the present utility model.

[0060] Reference numerals:

[0061] Electromagnetic suspension 1000;

[0062] Linear motor 100, stator assembly 10, stator core shaft 1, cavity 11, through hole 12, limiting protrusion 13, first rod segment 14, second rod segment 15, guide cavity 16, fixing member 17, outlet port 18, conductive component 2, notch 21, insulating member 22, conductive wire row 23, connection part 231, connection hole 24, retaining wall 25, rib 26, axial rib 261, circumferential rib 262, avoidance space 27, fixing hole 28, adapter 3, welding part 31, connection part 32, main body 33, excitation component 4, stator core 41, winding 42, winding lead-out part 422, lead-out wire head 423, winding part 424, insulating plate 6, buffer pad 7, buffer sleeve 8;

[0063] The movable assembly 20, the housing 201, the sliding bearing 202, the second bearing 203, the guide column 204, the guide column body 2041, and the guide column mounting portion 2042;

[0064] Connector wire terminal 30;

[0065] Fork arm 200;

[0066] Vehicles 10000. DETAILED DESCRIPTION

[0067] The embodiments of the present invention are described in detail below, and 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 to be used to explain the present invention, and should not be construed as limiting the present invention.

[0068] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0069] Combine the following Figure 1-Figure 26A stator core shaft 1 , a stator assembly 10 having the stator core shaft 1 , a linear motor 100 having the stator assembly 10 , an electromagnetic suspension 1000 having the linear motor 100 , and a vehicle 10000 having the electromagnetic suspension 1000 according to an embodiment of the present invention are described in detail.

[0070] Reference Figure 1-Figure 5 , Figure 22-Figure 23 As shown, according to the embodiment of the utility model, the interior of the stator core shaft 1 has a cavity 11, the axial wall of the stator core shaft 1 is provided with a through hole 12, the through hole 12 is connected to the cavity 11, and a limiting protrusion 13 is also provided on the outer peripheral surface of the stator core shaft 1. The limiting protrusion 13 protrudes outward along the radial direction of the stator core shaft 1. In the axial direction of the stator core shaft 1, the through hole 12 and the limiting protrusion 13 are located at the same height. The axial direction of the stator core shaft 1 is the Q1-Q2 direction, the radial direction of the stator core shaft 1 is the direction perpendicular to the Q1-Q2 direction, and the through hole 12 and the limiting protrusion 13 are located at the same height in the Q1-Q2 direction, that is, the through hole 12 and the limiting protrusion 13 at least partially overlap in the axial direction of the stator core shaft 1, thereby making the through hole 12 and the limiting protrusion 13 at least partially overlap in the circumferential direction of the stator core shaft 1, and at the position where the through hole 12 and the limiting protrusion 13 overlap, the through hole 12 penetrates outward to the outer peripheral surface of the limiting protrusion 13, so that the strength of the stator core shaft 1 will not be excessively reduced due to the provision of the through hole 12. Moreover, compared with the design in which the through hole 12 and the limiting protrusion 13 are not at the same height, the stator core shaft 1 of the utility model designs the through hole 12 and the limiting protrusion 13 to be located at the same height, which can save the axial space of the stator core shaft 1.

[0071] When the stator core shaft 1 is matched with the excitation component 4, the through hole 12 can be used for the adapter 3 to pass through, and the limiting protrusion 13 can be used to axially limit the excitation component 4. The adapter 3 can transmit the electrical energy of the excitation component 4 to other positions through the through hole 12 and the cavity 11 of the stator core shaft 1.

[0072] According to the stator core shaft 1 of the embodiment of the utility model, by setting the through hole 12 and the limiting protrusion 13 to be at the same height in the axial direction of the stator core shaft 1, the axial space of the stator core shaft 1 can be saved, and it is helpful to alleviate the problem of a significant reduction in the strength of the stator core shaft 1 caused by the setting of the through hole 12.

[0073] In some embodiments of the present invention, there are multiple through holes 12, and the multiple through holes 12 are dispersedly arranged around the circumference of the stator core shaft 1. Figure 3 As shown, multiple through holes 12 are distributed at different circumferential positions of the limiting protrusion 13. In the axial direction of the stator core shaft 1, the multiple through holes 12 are located at the same axial height. The multiple through holes 12 can be used to pass through multiple adapters 3, for example, one adapter 3 passes through a through hole 12, or multiple adapters 3 pass through a through hole 12.

[0074] Optionally, refer to Figure 3 As shown, the number of adapters 3 and through holes 12 is equal, and the adapters 3 correspond to the through holes 12 one by one. That is to say, each phase adapter 3 has a separate through hole 12 for leading out. Compared with the method of combining multiple phase adapters and leading out from one through hole in the related art, the separate leading method in the present application makes the through hole 12 smaller in size, does not excessively reduce the strength of the stator core shaft 1, and each phase adapter 3 can be dispersedly arranged along the circumference of the stator core shaft 1, with sufficient space, so that each phase adapter 3 is conveniently connected to the corresponding winding 42.

[0075] Alternatively, the number of adapters 3 is less than the number of through holes 12 .

[0076] Or optionally, the number of adapters 3 is greater than the number of through holes 12 .

[0077] Optionally, multiple through holes 12 are evenly dispersed around the circumference of the stator core shaft 1, thereby reducing the difficulty of processing the through holes 12, and it is more convenient when the adapter 3 passes through the through hole 12, avoiding the problem of difficult control of the assembly angle when the through holes 12 are unevenly arranged and the space being limited due to the close distance between two adjacent through holes 12. At the same time, the structure of the stator core shaft 1 can be more balanced. When the stator core shaft 1 is applied to the linear motor 100 or the electromagnetic suspension 1000, the structure of the linear motor 100 or the electromagnetic suspension 1000 can be made more balanced.

[0078] In some embodiments of the present invention, referring to Figure 3 As shown, there are three through holes 12, and the interval between any two adjacent through holes 12 is 120°. In other words, the three through holes 12 are evenly dispersed around the circumference of the stator core shaft 1. Therefore, when the adapter 3 is inserted into each through hole 12, the distance between any two adjacent adapters 3 is consistent to avoid mutual interference, and there is sufficient operating space at each through hole 12 to avoid the situation where some through holes 12 are close to each other and cause congestion during wiring. The uniform design better guarantees the balance of the stator core shaft 1. When the stator core shaft 1 is applied to a three-phase motor, each through hole 12 can be used for one-phase adapter 3 to pass through, and the uniform design of the three through holes 12 ensures the balance of the three-phase motor.

[0079] In some embodiments of the present invention, the stator core shaft 1 includes a first rod segment 14 and a second rod segment 15, wherein the first rod segment 14 is located on one axial side of the limiting protrusion 13, and the second rod segment 15 is located on the other axial side of the limiting protrusion 13. In the axial direction of the stator core shaft 1, one end of the through hole 12 close to the first rod segment 14 extends to one end face of the limiting protrusion 13 close to the first rod segment 14, and / or one end of the through hole 12 close to the second rod segment 15 extends to one end face of the limiting protrusion 13 close to the second rod segment 15. Figure 1-Figure 2 , Figure 22-Figure 23 In the specific embodiment, the stator core shaft 1 includes a first rod segment 14 and a second rod segment 15. The axial direction of the stator core shaft 1 is the Q1-Q2 direction. The first rod segment 14 is located on the Q1 side of the limiting protrusion 13, and the second rod segment 15 is located on the Q2 side of the limiting protrusion 13. The top of the Q1 end of the through hole 12 extends to the top surface of the Q1 end of the limiting protrusion 13, and the bottom of the Q2 end of the through hole 12 extends to the bottom surface of the Q2 end of the limiting protrusion 13. In other words, the top of the Q1 end of the through hole 12 penetrates to the top surface of the Q1 end of the limiting protrusion 13, and the bottom of the Q2 end of the through hole 12 penetrates to the bottom surface of the Q2 end of the limiting protrusion 13, thereby facilitating the processing and manufacturing of the through hole 12. When the adapter 3 passes through the through hole 12, it is also beneficial to shorten the length of the adapter 3.

[0080] In some embodiments not shown in the figure, the top of the Q1 end of the through hole 12 may extend to the top surface of the Q1 end of the limiting protrusion 13, while the bottom of the Q2 end of the through hole 12 does not extend to the bottom surface of the Q2 end of the limiting protrusion 13. Alternatively, the top of the Q1 end of the through hole 12 does not extend to the top surface of the Q1 end of the limiting protrusion 13, while the bottom of the Q2 end of the through hole 12 extends to the bottom surface of the Q2 end of the limiting protrusion 13.

[0081] In some embodiments of the present invention, the bottom surface of one end of the through hole 12 close to the second rod segment 15 is flush with the end surface of the limiting protrusion 13 close to the second rod segment 15. In other words, the bottom of the Q2 end of the through hole 12 passes through the bottom surface of the Q2 end of the limiting protrusion 13.

[0082] Reference Figure 14-17 As shown, according to the second aspect of the utility model, the stator assembly 10 includes: a conductive component 2, a winding 42 and the stator core shaft 1 of the above embodiment, the conductive component 2 is at least partially installed in the cavity 11, the winding 42 is sleeved on the outer periphery of the stator core shaft 1, and the winding 42 includes a winding lead-out portion 422, and the winding lead-out portion 422 and the conductive component 2 are connected via a through hole 12.

[0083] In some embodiments of the present invention, referring to Figure 14-17 As shown, the stator assembly 10 also includes an adapter 3, the adapter 3 passes through the through hole 12, the first end of the adapter 3 extends into the cavity 11, and the first end of the adapter 3 is electrically connected to the conductive component 2, the second end of the adapter 3 extends to the outside of the stator core shaft 1, and the second end of the adapter 3 is electrically connected to the winding 42, specifically, the second end of the adapter 3 is electrically connected to the winding lead-out portion 422 of the winding 42. The adapter 3 passes through the through hole 12, so that the wiring between the internal cavity 11 of the stator core shaft 1 and the outside of the stator core shaft 1 can be realized. When the winding 42 is installed on the periphery of the stator core shaft 1, the winding 42 can be electrically connected to the conductive component 2 through the adapter 3.

[0084] In some embodiments of the present invention, referring to Figure 14-17As shown, the stator assembly 10 further includes a stator core 41, which is sleeved on the outer circumference of the stator core shaft 1, and has winding slots, and the winding 42 is wound in the winding slots. The stator core 41 and the winding 42 constitute an excitation component 4. The winding 42 is connected to the second end of the adapter 3, and the winding 42 is electrically connected to the conductive component 2 through the adapter 3, and the electric energy of the excitation component 4 can be further transmitted to other locations through the conductive component 2.

[0085] According to the stator assembly 10 of the embodiment of the utility model, the stator core shaft 1 can save the axial space of the stator core shaft 1 by setting the through hole 12 and the limiting protrusion 13 at the same height in the axial direction of the stator core shaft 1, and it is helpful to alleviate the problem of the significant reduction in strength of the stator core shaft 1 caused by the setting of the through hole 12. The winding 42 is connected to the conductive component 2 through the adapter 3, and the electric energy of the winding 42 can be transmitted to other positions through the adapter 3 and the conductive component 2.

[0086] The stator assembly in the related art is to pass the cable through the stator core shaft, and lead it to the outside through the internal cavity of the stator core shaft. The cable path is long, which makes assembly very difficult and easily causes damage to the cable during assembly. Moreover, during the operation of the motor, the cable span is very large and may fail faster. In the present utility model, by using the adapter 3 and the conductive component 2 to replace the cable in the related art, the assembly can be simplified. The adapter 3 only needs to pass through the through hole 12 to be electrically connected to the conductive component 2 in the internal cavity 11 of the stator core shaft 1. The conductive component 2 further transmits the electrical energy to the outside of the stator core shaft 1. The connection between each part is firm and not easy to fail.

[0087] In some embodiments of the present invention, the axial dimension of the through hole 12 is larger than the axial dimension of the limiting protrusion 13 so as to separate the limiting protrusion 13 in the circumferential direction. In this way, when the adapter 3 passes through the through hole 12, the axial end faces of the limiting protrusion 13 will not interfere with or block the adapter 3, thereby shortening the length of the adapter 3 and facilitating the connection between the winding 42 and the conductive component 2. Figure 1-Figure 2 , Figure 4-Figure 5 As shown, the axial upper end of the through hole 12 passes through the upper end top surface of the limiting protrusion 13 and extends to the first rod segment 14, and the axial lower end of the through hole 12 extends to the lower end bottom surface of the limiting protrusion 13. In the circumferential direction of the stator core shaft 1, the limiting protrusion 13 is divided into N sections by N through holes 12. Figure 3 As shown, in the circumferential direction of the stator core shaft 1 , the limiting protrusion 13 is divided into three sections by three through holes 12 .

[0088] In some embodiments of the present invention, referring to Figure 9-13As shown, the conductive component 2 includes a conductive wire row 23, and the first end of the adapter 3 is electrically connected to the conductive wire row 23. The conductive wire row 23 is a conductive component of the conductive component 2. By electrically connecting the adapter 3 to the conductive wire row 23, the electric energy of the excitation component 4 can be transmitted to the conductive wire row 23 through the adapter 3, and then transmitted to other locations through the conductive wire row 23.

[0089] In some embodiments of the present invention, referring to Figure 5 , Figure 7 , Fig. 9 , Figure 11-13 , Fig.17 As shown, the conductive wire row 23 has a connection hole 24, and the first end of the adapter 3 is inserted into the connection hole 24 and welded to the conductive wire row 23. Specifically, the adapter 3 is welded to the conductive wire row 23, which can ensure that the adapter 3 is firmly connected to the conductive wire row 23, thereby ensuring that the reliability of the electrical connection between the adapter 3 and the conductive wire row 23 is high. By providing the connection hole 24 on the conductive wire row 23 and inserting one end of the adapter 3 into the connection hole 24, it can be ensured that one end of the adapter 3 is embedded in the conductive wire row 23, and the adapter 3 is not easy to fall off from the conductive wire row 23. The adapter 3 is firmly connected to the conductive wire row 23, thereby improving the working reliability of the stator assembly 10, which is beneficial to improving the overall safety of the linear motor 100 and the electromagnetic suspension 1000.

[0090] In some embodiments of the present invention, referring to Figure 5 , Figure 7 , Fig. 9 , Figure 11-13 As shown, the conductive component 2 also includes an insulating member 22. In the radial direction of the stator core shaft 1, the insulating member 22 is wrapped around the outside of the conductive wire row 23. A notch 21 is provided on the insulating member 22. The notch 21 connects the through hole 12 and the connecting hole 24. The first end of the adapter 3 passes through the through hole 12 and the notch 21 and is inserted into the connecting hole 24. By providing the insulating member 22, the conductive wire row 23 can be isolated from the stator core shaft 1, and the electric energy of the excitation component 4 is prevented from being transmitted to the stator core shaft 1, thereby improving the safety of the stator assembly 10. At the same time, the insulating member 22 can also support and protect the conductive wire row 23 to prevent the conductive wire row 23 from breaking or being damaged. The insulating member 22 can be an injection molded part, and the injection molded part and the conductive wire row 23 are integrally injection molded, and the injection molded part wraps the conductive wire row 23 inside.

[0091] Optionally, the conductive wire row 23 may be a metal wire row with conductive function such as a conductive copper row or a conductive aluminum row.

[0092] Reference Figure 5 , Figure 7 , Fig. 9 , Fig.13As shown, in the radial direction of the stator core shaft 1, the notch 21 is aligned with the connection hole 24, and the projection of the connection hole 24 in the projection plane perpendicular to the normal of the notch 21 is smaller than the projection of the notch 21 in the projection plane. In other words, the connection hole 24 can be completely exposed from the notch 21, thereby facilitating the first end of the adapter 3 to be inserted into the connection hole 24 through the notch 21, thereby reducing the difficulty of connecting the adapter 3 with the conductive wire row 23. In other words, in order to facilitate welding and prevent the insulating member 22 from being affected by heat and failing, the area of ​​the conductive wire row 23 exposed from the notch 21 should be larger than the area of ​​the connection hole 24.

[0093] In some embodiments of the present invention, referring to Figure 6-Figure 11 , Figure 22-Figure 23 As shown, the conductive component 2 also includes an insulating member 22. In the radial direction of the stator core shaft 1, the insulating member 22 is wrapped around the outer side of the conductive wire row 23. An escape space 27 is formed between the insulating member 22 and the cavity wall of the cavity 11. The escape space 27 is used to escape the fixing member 17. The fixing member 17 is used to connect the insulating member 22 and the stator core shaft 1. Specifically, the upper end of the insulating member 22 has a fixing hole 28, and the internal cavity 11 of the stator core shaft 1 has a fixing member 17. The fixing member 17 is fixedly connected to the fixing hole 28 on the insulating member 22. The escape space 27 is used to escape the fixing member 17 to prevent other parts of the insulating member 22 from interfering with the fixing member 17.

[0094] In some embodiments of the present invention, referring to Figure 6-Figure 11 , Figure 22-Figure 23 As shown, the conductive component 2 also includes an insulating member 22. In the radial direction of the stator core shaft 1, the insulating member 22 is wrapped around the outside of the conductive wire row 23. The outer peripheral surface of the insulating member 22 is provided with an outwardly protruding rib 26, and the rib 26 abuts against the cavity wall of the cavity 11. One function of the rib 26 is to prevent the conductive component 2 from shaking in the radial direction of the stator core shaft 1 by abutting against the cavity wall of the cavity 11, so as to ensure that the positions of the conductive wire row 23 and the stator core shaft 1 are relatively fixed. Another function is to strengthen the strength of the conductive component 2. At the same time, the rib 26 avoids the fixing member 17, and the projection of the rib 26 on the plane perpendicular to the axis of the stator core shaft 1 and the projection of the avoidance space 27 on the plane perpendicular to the axis of the stator core shaft 1 do not overlap at all, so as to avoid interference between the rib 26 and the fixing member 17.

[0095] In some embodiments of the present invention, referring to Figure 6 , Figure 8-Figure 10As shown, the ribs 26 are grid-like ribs 26. Specifically, the ribs 26 include axial ribs 261 and circumferential ribs 262. The axial ribs 261 extend along the axial direction of the stator core shaft 1, and the circumferential ribs 262 extend along the circumferential direction of the stator core shaft 1. The axial ribs 261 and the circumferential ribs 262 are cross-arranged. Therefore, the ribs 26 have a more significant effect on strengthening the strength of the conductive component 2, and the radial support effect on the conductive component 2 is more stable.

[0096] In some embodiments of the present invention, referring to Figure 1 , Figure 4 , Figure 14-16 , Figure 22-Figure 24 As shown, the stator core shaft 1 has an outlet port 18 connected to the cavity 11, and the conductive component 2 extends out of the stator core shaft 1 through the outlet port 18. The matching position of the conductive component 2 and the outlet port 18 is sealed by a sealing structure. In the related art, the cable is led out from the outlet port 18 after passing through the through hole. The cable is relatively soft, and when the motor is working, the position of the cable is easily changed, thereby making the sealing of the cable and the outlet port 18 poor. In the utility model, the conductive component 2 and the adapter 3 are used to replace the cable. The conductive component 2 is a hard part, and the position of the conductive component 2 is not easy to change, so that the connection of each part is stable and not easy to fail. After the matching position of the conductive component 2 and the outlet port 18 is sealed by the sealing structure, the sealing effect is good, and it is not easy to leak at the sealing position, which is beneficial to improve the service life and use safety of the stator assembly 10.

[0097] Specifically, the end of the first rod segment 14 facing away from the second rod segment 15 has an outlet port 18, and the outlet port 18 is connected to the cavity 11. Figure 1 and Figure 3 The first rod segment 14 is located above the second rod segment 15, the upper end of the first rod segment 14 is the end of the first rod segment 14 that is away from the second rod segment 15, the upper end of the first rod segment 14 has an outlet port 18, and the outlet port 18 is connected to the cavity 11. The lower end of the conductive component 2 is located in the internal cavity 11 of the stator core shaft 1, and the upper end of the conductive component 2 extends out of the stator core shaft 1 through the outlet port 18.

[0098] In some embodiments of the utility model, the outer circumferential surface of the stator core shaft 1 has a winding installation area for installing the winding 42, and the winding 42 is installed in the winding installation area. In the axial direction of the stator core shaft 1, the winding installation area is located on one side of the through hole 12, and the notch 21 is located on the side wall of one end of the insulating member 22 close to the winding installation area, and the notch 21 has a preset distance from the end of the insulating member 22 close to the winding installation area in the axial direction of the stator core shaft 1, and the preset distance is greater than 0. Figure 6-Figure 10 As shown, the notch 21 is located on the side wall of the lower end of the insulating member 22. The notch 21 is at a certain distance from the lower end of the insulating member 22 in the axial direction of the stator core shaft 1. Figure 5 , Figure 7 , Fig.13 As shown, a retaining wall 25 is formed between the notch 21 and the edge of one end of the insulating member 22 close to the winding installation area. The retaining wall 25 is a part of the insulating member 22, and the axial extension length of the retaining wall 25 is S2. By arranging the retaining wall 25 between the notch 21 and the edge of one end of the insulating member 22 close to the winding installation area, the adapter 3 is suitable for bypassing the axial length S2 of the retaining wall 25, and then passing through the through hole 12 and the notch 21 to connect to the connecting portion 231 of the conductive wire row 23, thereby making the adapter 3 first reach the notch 21 after a certain axial displacement S2, and then connect to the conductive wire row 23 after a radial displacement S1 at the notch 21, so that the connection between the adapter 3 and the conductive wire row 23 can have a certain axial creepage distance and radial creepage distance, which is conducive to improving the safety of use.

[0099] Reference Figure 4-Figure 5 , Figure 8-Figure 12 , Figure 15-18 As shown, the first end of the adapter 3 is provided with a welding portion 31, which is suitable for passing through the through hole 12 and entering the cavity 11 to be electrically connected to the conductive component 2, and the second end of the adapter 3 extends to the outside of the stator core shaft 1 and is electrically connected to the winding 42.

[0100] In some embodiments of the present invention, referring to Figure 5 , Figure 7 , Fig. 9 , Figure 11-13 , Fig.17 As shown, the connection portion 231 of the conductive wire row 23 is provided with a connection hole 24, and the welding portion 31 is suitable for being inserted into the connection hole 24. The outer peripheral surface of the welding portion 31 fits with the hole wall of the connection hole 24. In this way, the welding portion 31 is tightly connected to the hole wall of the connection hole 24, which is conducive to ensuring good conductivity between the adapter 3 and the conductive wire row 23.

[0101] In some embodiments of the utility model, the connection hole 24 can be circular or non-circular. The shape of the welding portion 31 is adapted to the connection hole 24 to ensure that the outer surface of the welding portion 31 fits the hole wall of the connection hole 24. When the connection hole 24 is a non-circular hole, the welding portion 31 is non-cylindrical. After the welding portion 31 is inserted into the connection hole 24, the welding portion 31 is not easy to rotate relative to the connection hole 24, thereby ensuring the firmness of the insertion of the welding portion 31 in the connection hole 24, and being able to achieve error prevention and foolproofing in actual production. Fig.21a , Figure 21b , Fig.21c and Fig.21d Some optional shapes of the welding portion 31 are shown, for example Fig.21c The circular shape shown, Fig.21a The rectangle shown, Fig.21d The oval shown, Figure 21b The pentagon shown. Of course, Fig.21a , Figure 21b , Fig.21c and Fig.21d The shape shown in FIG. 1 should not be construed as limiting the shape of the welding portion 31 , and the welding portion 31 may also be in other shapes not shown.

[0102] In some embodiments of the present invention, referring to Figure 16-Figure 20 As shown, the stator assembly 10 further includes an insulating plate 6, which separates the through hole 12 and the winding installation area in the axial direction, and the adapter 3 further includes a body portion 33 and a connecting portion 32, the body portion 33 connects the connecting portion 32 and the welding portion 31, and the winding 42 includes a winding lead-out portion 422 and a lead-out wire head 423, the lead-out wire head 423 is connected to the winding lead-out portion 422, the body portion 33 and the winding lead-out portion 422 are attached to the insulating plate 6, and in the axial direction of the stator core shaft 1, the connecting portion 32 and the lead-out wire head 423 are bent in a direction away from the insulating plate 6, and the connecting portion 32 is connected to the lead-out wire head 423. In other words, the connecting portion 32 and the lead-out wire head 423 are stacked in the radial direction. The reason for bending along the axial direction is that the main body 33 and the winding lead-out portion 422 are attached to the insulating plate 6. When the connecting portion 32 and the lead-out wire head 423 are welded, if the connecting portion 32 and the lead-out wire head 423 are stacked in the axial direction, the welding tool cannot be fixed. Therefore, the connecting portion 32 and the lead-out wire head 423 are arranged to be stacked in the radial direction, that is, Fig.17 The state shown is convenient for fixing the welding tooling.

[0103] Optionally, the connecting portion 32 is bent relative to the main body 33 in the axial direction of the stator core shaft 1 in a direction away from the insulating plate 6, and the winding 42 has a lead-out terminal 423 in the same bending direction as the connecting portion 32. The connecting portion 32 and the lead-out terminal 423 are attached and connected and fixed, thereby realizing the electrical connection between the adapter 3 and the winding 42. Figure 16-Figure 18 In the illustrated embodiment, the connection portion 32 is bent upward relative to the main body portion 33 in the axial direction of the stator core shaft 1, the winding 42 includes a winding lead-out portion 422 and a lead-out wire head 423 bent upward, the main body portion 33 and the winding lead-out portion 422 are abutted against the insulating plate 6, and the connection position between the connection portion 32 and the lead-out wire head 423 is located on the axial upper side of the insulating plate 6, where there is sufficient space to fix the welding tool, so as to facilitate the connection and connection fixation of the connection portion 32 and the lead-out wire head 423. Of course, in some embodiments not shown in the figure, the connection portion 32 can be bent toward the direction of the insulating plate 6 relative to the main body portion 33 in the axial direction of the stator core shaft 1, that is, the connection portion 32 is bent downward relative to the main body portion 33 in the axial direction of the stator core shaft 1, and is bent to the radial outer side of the excitation assembly 4, so as to facilitate the connection of the connection portion 32 with the winding 42 below the insulating plate 6.

[0104] Optionally, the connection portion 32 and the lead-out terminal 423 may be fixed by welding, bonding, or connection and fixation using a wire.

[0105] Reference Fig.17 As shown, the winding 42 also includes a winding portion 424 , which is wound in a winding slot of the stator core 41 , and a winding lead-out portion 422 is connected to the winding portion 424 , which transmits the electrical energy of the winding portion 424 to the adapter 3 .

[0106] Optionally, the adapter 3 is a hard metal piece, which is not easy to shake at will, and is conducive to ensuring that the position of the adapter 3 is fixed.

[0107] Alternatively, the adapter 3 is a soft metal piece. The soft metal piece is relatively soft and can change shape at will, and is convenient to change direction, so as to better connect with the winding body 421 and the conductive wire row 23.

[0108] Reference Fig.24 As shown, the linear motor 100 according to the third aspect of the embodiment of the utility model includes the stator assembly 10 of the above embodiment.

[0109] In some embodiments of the present invention, referring to Figure 16-Figure 17 , Fig.24 As shown, the linear motor 100 further includes a connector terminal 30, which is disposed at one end of the stator core shaft 1 in the axial direction, and is suitable for electrically connecting the conductive component 2 to the motor controller. Specifically, the end of the conductive component 2 away from the limiting protrusion 13 (i.e. Fig.24 The upper end in the figure is the plug-in end, and the plug-in connector terminal 30 is suitable for plugging with the plug-in end. One end of the conductive wire row 23 is connected to the adapter 3, and the other end extends to the plug-in end and is connected to the plug-in connector terminal 30. The plug-in connector terminal 30 is directly connected to the motor controller or connected to the motor controller through a wire. The excitation component 4 is electrically connected to the conductive component 2 through the adapter 3, and the electric energy of the excitation component 4 can be further transmitted to the plug-in connector terminal 30 through the conductive component 2, and then transmitted to the motor controller.

[0110] According to the linear motor 100 of the embodiment of the utility model, the stator assembly 10 thereof can save the axial space of the stator core shaft 1 by setting the through hole 12 and the limiting protrusion 13 at the same height in the axial direction of the stator core shaft 1, and is conducive to alleviating the problem of a significant reduction in the strength of the stator core shaft 1 caused by the provision of the through hole 12. The winding 42 is connected to the conductive component 2 via the adapter 3, and the electric energy of the winding 42 can be transmitted to other locations via the adapter 3 and the conductive component 2.

[0111] Reference Figure 24-25As shown, the linear motor 100 according to the embodiment of the utility model further includes a mover assembly 20, which can move axially relative to the stator assembly 10. The mover assembly 20 includes: a housing 201 and a sliding bearing 202. The housing 201 is provided with a spindle hole, the stator spindle 1 is plugged into the spindle hole, and the sliding bearing 202 is arranged at the plug-in fit between the stator spindle 1 and the spindle hole. The housing 201 and the sliding bearing 202 can move axially relative to the stator spindle 1. By providing the sliding bearing 202, the friction between the stator spindle 1 and the housing 201 can be reduced, so that the relative movement of the mover assembly 20 and the stator assembly 10 is easier, and at the same time, the wear of the stator spindle 1 and the housing 201 can be reduced, the service life of the linear motor 100 can be improved, and the operation accuracy of the linear motor 100 can be improved, and the noise can be reduced.

[0112] Specifically, a magnetic component is disposed on the inner wall of the housing 201 , and when the mover assembly 20 moves axially relative to the stator assembly 10 , the magnetic component of the mover assembly 20 and the excitation component 4 of the stator assembly 10 move axially relative to each other, thereby generating electric energy.

[0113] In some embodiments of the utility model, the stator assembly 10 further includes a buffer pad 7, which is sleeved on the stator core shaft 1, and the buffer pad 7 overlaps the side of the limiting protrusion 13 facing the sliding bearing 202. The buffer pad 7 can axially limit the adapter 3 at the through hole 12 to prevent the adapter 3 from moving upward and colliding with the sliding bearing 202 or the housing 201. At the same time, when the sliding bearing 202 moves downward, the buffer pad 7 can prevent the sliding bearing 202 from squeezing the adapter 3. The buffer pad 7 can cooperate with the through hole 12, and the buffer pad 7 and the through hole 12 work together to limit the adapter 3 to the through hole 12. The buffer pad 7 can protect the adapter 3 and ensure the reliability of the electrical system.

[0114] Optionally, the buffer pad 7 is made of rubber material, which can buffer the impact of surrounding components on the adapter 3 under extreme working conditions.

[0115] In some embodiments of the present invention, referring to Fig.24 As shown, the mover assembly 20 further includes a guide post 204, which is connected to the housing 201. The interior of the stator core shaft 1 also has a guide cavity 16, and the guide post 204 is suitable for extending into the guide cavity 16, and the guide post 204 can move along the axial direction of the stator core shaft 1. Optionally, the guide post 204 can be directly fixedly connected to the housing 201, or indirectly connected to the housing 201 through a transition structure. The guide post 204 plays a guiding role, which is conducive to improving the stability and reliability of the axial movement of the mover assembly 20.

[0116] In some embodiments of the present invention, referring to Fig.24As shown, the guide cavity 16 is communicated with the cavity 11, and the guide cavity 16 and the cavity 11 form a complete hollow cavity, and the stator core shaft 1 is a hollow shaft.

[0117] Or in some other embodiments, the guide cavity 16 is separated from the cavity 11 by a partition wall, and the stator core shaft 1 is a non-hollow shaft.

[0118] In some embodiments of the present invention, referring to Fig.24 As shown, the guide post 204 includes a guide post body 2041 and a guide post mounting portion 2042, the guide post body 2041 is connected to the guide post mounting portion 2042, the guide post body 2041 is suitable for extending into the guide cavity 16, the guide post mounting portion 2042 is connected to the housing 201, and the linear motor 100 also includes a buffer sleeve 8, the buffer sleeve 8 is located between the guide post mounting portion 2042 and the stator core shaft 1 and is sleeved on the guide post body 2041. When the mover assembly 20 moves to the first extreme position, the buffer sleeve 8 can absorb the collision of the fork arm 200 on the stator core shaft 1, which plays a protective role and can reduce noise.

[0119] Optionally, the buffer sleeve 8 is made of rubber or silicone material, which has a better effect of absorbing collision energy.

[0120] Reference Fig.24 As shown, the mover assembly 20 also includes a second bearing 203, and the second bearing 203 is arranged at the plug-in fit between the guide column 204 and the guide cavity 16, that is, the second bearing 203 is arranged at the opening of the second rod segment 15. By setting the second bearing 203, the sliding of the mover assembly 20 can be made smoother, the operating accuracy of the linear motor 100 can be improved, and the noise can be reduced.

[0121] Reference Figure 24-25 As shown, the electromagnetic suspension 1000 according to the fourth embodiment of the utility model includes a fork arm 200 and the linear motor 100 of the above embodiment.

[0122] According to the electromagnetic suspension 1000 of the embodiment of the utility model, the stator core shaft 1 of the linear motor 100 can save the axial space of the stator core shaft 1 by setting the through hole 12 and the limiting protrusion 13 at the same height in the axial direction of the stator core shaft 1, and it is helpful to alleviate the problem of the significant reduction in strength of the stator core shaft 1 caused by the setting of the through hole 12. The winding 42 is connected to the conductive component 2 through the adapter 3, and the electric energy of the winding 42 can be transmitted to other positions through the adapter 3 and the conductive component 2.

[0123] Reference Fig.26 As shown, a vehicle 10000 according to an embodiment of the fifth aspect of the utility model comprises the electromagnetic suspension 1000 of the above-mentioned embodiment.

[0124] According to the vehicle 10000 of the fourth aspect of the utility model, the stator core shaft 1 of the electromagnetic suspension 1000 can save the axial space of the stator core shaft 1 by setting the through hole 12 and the limiting protrusion 13 at the same height in the axial direction of the stator core shaft 1, and is conducive to alleviating the problem of a significant reduction in the strength of the stator core shaft 1 caused by the setting of the through hole 12. The winding 42 is connected to the conductive component 2 via the adapter 3, and the electric energy of the winding 42 can be transmitted to other locations via the adapter 3 and the conductive component 2.

[0125] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0126] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0127] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. 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 this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0128] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A stator core shaft (1), characterized in that: The stator core shaft (1) has a cavity (11) inside, the axial wall of the stator core shaft (1) is provided with a through hole (12) connected to the cavity (11), and the outer peripheral surface of the stator core shaft (1) is also provided with a limiting protrusion (13) protruding radially outward, and in the axial direction of the stator core shaft (1), the through hole (12) and the limiting protrusion (13) are located at the same height.

2. The stator core shaft (1) according to claim 1, characterized in that There are a plurality of through holes (12), and the plurality of through holes (12) are dispersedly arranged around the circumference of the stator core shaft (1).

3. The stator core shaft (1) according to claim 2, characterized in that There are three through holes (12), and the interval between any two adjacent through holes (12) is 120°.

4. The stator core shaft (1) according to claim 1, characterized in that The stator core shaft (1) comprises a first rod segment (14) located on one axial side of the limiting protrusion (13) and a second rod segment (15) located on the other axial side of the limiting protrusion (13); in the axial direction of the stator core shaft (1), a bottom surface of one end of the through hole (12) close to the second rod segment (15) is flush with an end surface of one end of the limiting protrusion (13) close to the second rod segment (15).

5. A stator assembly (10), characterized in that: The stator assembly (10) include: The stator core shaft (1) according to any one of claims 1 to 4; A conductive component (2), wherein the conductive component (2) is at least partially installed in the cavity (11); A winding (42), wherein the winding (42) is sleeved on the outer circumference of the stator core shaft (1), and the winding (42) comprises a winding lead-out portion (422), wherein the winding lead-out portion (422) and the conductive component (2) are connected via the through hole (12).

6. The stator assembly (10) according to claim 5, characterized in that: It also includes a transition piece (3), the transition piece (3) passes through the through hole (12), the first end of the transition piece (3) extends into the cavity (11) and is electrically connected to the conductive component (2), and the second end of the transition piece (3) extends to the outside of the stator core shaft (1) and is electrically connected to the winding (42).

7. The stator assembly (10) according to claim 6, characterized in that: The axial dimension of the through hole (12) is greater than the axial dimension of the limiting protrusion (13) so as to separate the limiting protrusion (13) in the circumferential direction.

8. The stator assembly (10) according to claim 6, characterized in that: The conductive component (2) comprises a conductive wire row (23), and the first end of the adapter (3) is electrically connected to the conductive wire row (23).

9. The stator assembly (10) according to claim 8, characterized in that: The conductive wire row (23) has a connection hole (24), and the first end of the adapter (3) is inserted into the connection hole (24) and is welded and fixed to the conductive wire row (23).

10. The stator assembly (10) according to claim 9, characterized in that: The conductive component (2) further comprises an insulating member (22), wherein in the radial direction of the stator core shaft (1), the insulating member (22) is wrapped around the outer side of the conductive wire row (23), and a notch (21) is provided on the insulating member (22), wherein the notch (21) connects the through hole (12) and the connecting hole (24).

11. The stator assembly (10) according to claim 8, characterized in that: The conductive component (2) further comprises an insulating member (22). In the radial direction of the stator core shaft (1), the insulating member (22) is wrapped around the outer side of the conductive wire row (23), and an escape space (27) is formed between the insulating member (22) and the cavity wall of the cavity (11), and the escape space (27) is used to escape a fixing member (17) connecting the insulating member (22) and the stator core shaft (1).

12. The stator assembly (10) according to claim 8, characterized in that: The conductive component (2) further comprises an insulating member (22), wherein in the radial direction of the stator core shaft (1), the insulating member (22) is wrapped around the outer side of the conductive wire row (23), and an outwardly protruding rib (26) is provided on the outer peripheral surface of the insulating member (22), and the rib (26) abuts against the cavity wall of the cavity (11).

13. The stator assembly (10) according to claim 5, characterized in that: The stator core shaft (1) has an outlet port (18) connected to the cavity (11); the conductive component (2) extends out of the stator core shaft (1) through the outlet port (18); and the matching portion between the conductive component (2) and the outlet port (18) is sealed by a sealing structure.

14. A linear motor (100), characterized in that: The invention comprises a stator assembly (10) according to any one of claims 5 to 13.

15. The linear motor (100) according to claim 14, characterized in that: The linear motor (100) further comprises: a connector wire end (30), the connector wire end (30) being arranged at one end of the stator core shaft (1) in the axial direction, the connector wire end (30) being suitable for electrically connecting the conductive component (2) to a motor controller.

16. An electromagnetic suspension (1000), characterized in that: Comprising the linear motor (100) according to claim 14 or 15.

17. A vehicle (10000), characterized in that: Comprising the electromagnetic suspension (1000) as claimed in claim 16.

Images