Stator assembly, linear motor, electromagnetic suspension and vehicle

Abstract

The utility model discloses a stator assembly, a linear motor, an electromagnetic suspension and a vehicle. The stator assembly comprises a stator core shaft, a conductive assembly and a winding, a cavity is formed in the stator core shaft, and a through hole communicated with the cavity is formed in the shaft wall of the stator core shaft; the conductive assembly is installed in the cavity and comprises a conductive wire row and an insulating part, the insulating part wraps the conductive wire row in the radial direction of the stator core shaft, a notch opposite to the through hole is formed in the insulating part, and the notch ends at the radial outer side face of the conductive wire row. The insulating part penetrates through the radial outer side surface of the insulating part so as to expose the connecting part of the conductive wire row; one end of the winding is connected with the connection part. According to the stator assembly provided by the utility model, the insulating part is provided with the gap with a certain length in the radial direction of the stator core shaft, so that the winding is connected with the conductive wire bar after a certain radial displacement, thereby enabling the connection part of the winding and the conductive wire bar to have a certain radial creepage distance, and facilitating the improvement of the use safety.

Description

Technical Field

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

[0002] In the related art, the stator assembly of a linear motor or electromagnetic suspension includes a stator core shaft, a conductive component and a winding. The conductive component is installed in the internal cavity of the stator core shaft. When the winding is electrically connected to the conductive component, the creepage distance is short, resulting in lower safety in use. 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 provides a stator assembly, which can increase the creepage distance of the connection between the winding and the conductive component.

[0004] The utility model also provides a linear motor with the stator assembly.

[0005] The utility model also provides an electromagnetic suspension with the linear motor.

[0006] The utility model also provides a vehicle with the electromagnetic suspension.

[0007] According to the embodiment of the utility model, the stator assembly includes: a stator core shaft, a conductive component and a winding, wherein the interior of the stator core shaft has a cavity, and the axial wall of the stator core shaft is provided with a through hole connected to the cavity; the conductive component is installed in the cavity, and the conductive component includes a conductive wire row and an insulating member, and in the radial direction of the stator core shaft, the insulating member is wrapped around the outer side of the conductive wire row, and a notch is provided on the insulating member, and the notch is arranged opposite to the through hole, and the notch terminates at the radial outer side of the conductive wire row and passes through the radial outer side of the insulating member to expose the connection part of the conductive wire row; one end of the winding is connected to the connection part.

[0008] According to the stator assembly of the embodiment of the utility model, a notch is provided on the insulating part, and the notch has a certain length in the radial direction of the stator core axis, so that the winding is connected to the conductive wire row after a certain radial displacement, thereby enabling the connection between the winding and the conductive wire row to have a certain radial creepage distance, which is beneficial to improving safety in use.

[0009] According to some embodiments of the present invention, the maximum distance between the connection position of the conductive wire row and the axis of the stator core shaft is smaller than the distance between the radial outer side surface of the insulating component and the axis of the stator core shaft.

[0010] According to some embodiments of the utility model, a winding installation area for installing the winding is provided on the outer circumferential surface of the stator core shaft, and in the axial direction of the stator core shaft, the winding installation area is located on one side of the through hole, the notch is located on the side wall of one end of the insulating member close to the winding installation area, and the notch has a preset distance from one end of the insulating member close to the winding installation area in the axial direction of the stator core shaft, and the preset distance is greater than 0.

[0011] According to some embodiments of the present invention, the edge of the notch has a chamfer, and an opening at one end of the notch close to the conductive wire row is smaller than an opening at one end of the notch away from the conductive wire row.

[0012] According to some embodiments of the present invention, the winding passes through the through hole, the first end of the winding passes through the notch and is connected to the connection portion, and the second end of the winding extends to the outside of the stator core shaft.

[0013] According to some embodiments of the present invention, a connection hole is provided at a connection portion of the conductive wire row, and the first end of the winding is inserted into the connection hole and is welded and fixed to the conductive wire row.

[0014] According to some embodiments of the present invention, in the radial direction of the stator core shaft, the notch is aligned with the connecting hole, and a projection of the connecting hole in a projection plane perpendicular to the normal direction of the notch is smaller than a projection of the notch in the projection plane.

[0015] According to some embodiments of the utility model, the winding includes a winding body and a transition piece, the transition piece passes through the through hole, the first end of the transition piece passes through the notch and is connected to the connection part, and the second end of the transition piece extends to the outside of the stator core shaft to be electrically connected to the winding body.

[0016] According to some embodiments of the utility model, the connection portion is provided with a connection hole, and the first end of the adapter is provided with a welding portion, the welding portion is suitable for being inserted into the connection hole, the outer peripheral surface of the welding portion is in contact with the hole wall of the connection hole, and the outer end surface of the welding portion facing the notch is flush with the outer end surface of the conductive wire row facing the notch.

[0017] According to some embodiments of the utility model, a winding installation area for installing the winding is provided on the outer circumferential surface of the stator core shaft, the stator assembly also includes an insulating plate, the insulating plate separates the through hole and the winding installation area in the axial direction, the adapter also includes a main body and a connecting portion, the main body connects the connecting portion and the welding portion, the winding body includes a winding lead-out portion and a lead-out wire head, the lead-out wire head is connected to the winding lead-out portion, the main body and the winding lead-out portion are abutted against the insulating plate, and in the axial direction of the stator core shaft, the connecting portion and the lead-out wire head are both bent in a direction away from the insulating plate, and the connecting portion is connected to the lead-out wire head.

[0018] 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.

[0019] According to some embodiments of the present invention, there are three through holes, and the interval between any two adjacent through holes is 120°.

[0020] According to some embodiments of the present invention, one end of the stator core shaft is a wire outlet port, the wire outlet port is in communication with the cavity, and the conductive component extends out of the stator core shaft through the wire outlet port.

[0021] According to some embodiments of the present invention, the mating point between the conductive component and the outlet port is sealed by a sealing structure.

[0022] The linear motor according to the second embodiment of the utility model includes the above-mentioned stator assembly.

[0023] According to some embodiments of the present invention, the linear motor further comprises a mover assembly, and the mover assembly is capable of moving along the axial direction of the stator core shaft.

[0024] According to the linear motor of the embodiment of the utility model, the stator assembly thereof is provided with a notch on the insulating part, and the notch has a certain length in the radial direction of the stator core shaft, so that the winding is connected to the conductive wire row after a certain radial displacement, thereby enabling the connection between the winding and the conductive wire row to have a certain radial creepage distance, which is beneficial to improving safety in use.

[0025] The electromagnetic suspension according to the embodiment of the third aspect of the utility model includes the above-mentioned linear motor.

[0026] According to the electromagnetic suspension of the embodiment of the utility model, the stator assembly of the linear motor thereof is provided with a notch on the insulating part, and the notch has a certain length in the radial direction of the stator core shaft, so that the winding is connected to the conductive wire row after a certain radial displacement, thereby enabling the connection between the winding and the conductive wire row to have a certain radial creepage distance, which is beneficial to improving safety in use.

[0027] A vehicle according to an embodiment of the fourth aspect of the utility model includes the above-mentioned electromagnetic suspension.

[0028] According to the vehicle of the embodiment of the utility model, the stator assembly of its electromagnetic suspension is provided with a notch on the insulating part, and the notch has a certain length in the radial direction of the stator core axis, so that the winding is connected to the conductive wire row after a certain radial displacement, thereby enabling the connection between the winding and the conductive wire row to have a certain radial creepage distance, which is beneficial to improving safety in use.

[0029] 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

[0030] 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;

[0031] Figure 2 yes Figure 1 A local enlarged schematic diagram of the middle A;

[0032] 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;

[0033] Figure 4 yes Figure 3 Sectional view of the middle BB section;

[0034] Figure 5 yes Figure 4 A partial enlarged schematic diagram of point C in the middle;

[0035] Figure 6 is a three-dimensional schematic diagram of a conductive component according to an embodiment of the utility model;

[0036] Figure 7 yes Figure 6 A partial enlarged schematic diagram of point D in the middle;

[0037] Figure 8 is another three-dimensional schematic diagram of a conductive component according to an embodiment of the utility model;

[0038] Fig. 9 is a front view of a conductive component according to an embodiment of the utility model;

[0039] 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;

[0040] Fig.11is a top view of a conductive component and an adapter according to an embodiment of the utility model;

[0041] Fig.12 yes Fig.11 Cross-sectional view of the EE section;

[0042] Fig.13 yes Fig.12 A partial enlarged schematic diagram of point F in the middle;

[0043] Fig.14 is a three-dimensional schematic diagram of a stator assembly according to an embodiment of the utility model;

[0044] Fig.15 is a top view of a stator assembly according to an embodiment of the utility model;

[0045] Fig.16 yes Fig.15 Sectional view of section GG;

[0046] Fig.17 yes Fig.16 A partial enlarged schematic diagram of the J in the middle;

[0047] Fig.18 is a three-dimensional schematic diagram of an adapter according to an embodiment of the utility model;

[0048] Fig.19 is a front view of an adapter according to an embodiment of the utility model;

[0049] Fig. 20 is a top view of an adapter according to an embodiment of the utility model;

[0050] Fig.21a It is a schematic diagram of a shape of a welded part;

[0051] Figure 21b It is a schematic diagram of another shape of the welded portion;

[0052] Fig.21c is a schematic diagram of another shape of the weld;

[0053] Fig.21d It is a schematic diagram of another shape of the welding part;

[0054] Fig. 22 is a schematic diagram of an electromagnetic suspension including a linear motor according to an embodiment of the utility model;

[0055] Fig.23 yes Fig. 22 A partial enlarged schematic diagram of the M in the middle;

[0056] Fig.24 is a schematic diagram of a vehicle according to an embodiment of the utility model.

[0057] Reference numerals:

[0058] 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, 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 body 421, winding lead-out part 422, lead-out wire head 423, insulating plate 6, buffer pad 7, buffer sleeve 8;

[0059] 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;

[0060] Connector wire terminal 30;

[0061] Fork arm 200;

[0062] Vehicles 10000. DETAILED DESCRIPTION

[0063] 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.

[0064] 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.

[0065] Combine the following Figure 1-Figure 24 A stator assembly 10 , 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.

[0066] Reference Figure 14-17 As shown, the stator assembly 10 according to the embodiment of the present invention includes: a stator core shaft 1 , a conductive component 2 and a winding 42 .

[0067] Combination Figure 2 , Figure 4 and Figure 13-Figure 17 The stator core shaft 1 has a cavity 11 inside, and the axial wall of the stator core shaft 1 is provided with a through hole 12, which is connected to the cavity 11. The conductive component 2 is installed in the cavity 11, and the conductive component 2 includes a conductive wire row 23 and 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 a notch 21 is provided on the insulating member 22. The notch 21 is arranged opposite to the through hole 12, and the notch 21 ends at the radial outer side of the conductive wire row 23, and penetrates the radial outer side of the insulating member 22 to expose the connection part 231 of the conductive wire row 23; one end of the winding 42 is connected to the connection part 231.

[0068] The winding 42 is suitable for being electrically connected to the conductive wire row 23. By arranging the insulating member 22 on the radial outer side of the conductive wire row 23, the conductive wire row 23 can be isolated from the stator core shaft 1, so as to prevent the electric energy of the winding 42 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 being broken or damaged. The insulating member 22 can be an injection molded part, which is integrally injection molded with the conductive wire row 23, and the injection molded part wraps the conductive wire row 23.

[0069] 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.

[0070] Reference Fig.15 As shown, in the radial direction of the stator core shaft 1, the insulating member 22 is wrapped around both sides of the conductive wire row 23, the notch 21 on the insulating member 22 extends along the radial direction of the stator core shaft 1, the right end of the notch 21 terminates at the radial outer side of the conductive wire row 23, the left end of the notch 21 penetrates to the radial outer side of the insulating member 22, and the radial extension length of the notch 21 along the stator core shaft 1 is S1. When the stator core shaft 1 is applied to the linear motor 100 or the electromagnetic suspension 1000, the winding 42 is suitable for being installed on the outer periphery of the stator core shaft 1, and the winding 42 is suitable for passing through the through hole 12 and the notch 21 and then connected to the connection part 231 of the conductive wire row 23, so that the winding 42 is connected to the conductive wire row 23 after a certain radial displacement S1, thereby enabling the connection between the winding 42 and the conductive wire row 23 to have a certain radial creepage distance.

[0071] 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 windings 42 are wound around the winding slots. The stator core 41 and the windings 42 form an excitation component 4. The windings 42 are electrically connected to the conductive component 2, and the electric energy of the excitation component 4 can be further transmitted to other locations through the conductive component 2.

[0072] According to the stator assembly 10 of the embodiment of the utility model, by setting the notch 21 on the insulating part 22, and the notch 21 has a certain length in the radial direction of the stator core shaft 1, the winding 42 is connected to the conductive wire row 23 after a certain radial displacement, thereby enabling the connection between the winding 42 and the conductive wire row 23 to have a certain radial creepage distance, which is beneficial to improving safety in use.

[0073] 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 a conductive component 2 to replace the cable in the related art, the assembly can be simplified. The winding 42 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.

[0074] In some embodiments of the present invention, the maximum distance between the connection part 231 of the conductive wire row 23 and the axis of the stator core shaft 1 is less than the distance between the radial outer side of the insulating member 22 and the axis of the stator core shaft 1. In other words, the outer side farthest from the connection part 231 of the conductive wire row 23 to the axis of the stator core shaft 1 does not exceed the radial outer side of the insulating member 22. Fig.13 As shown, the left side surface of the connection part 231 of the conductive wire row 23 is located on the right side of the left side surface of the insulating member 22, and there is a distance S1 between the left side surface of the connection part 231 of the conductive wire row 23 and the left side surface of the insulating member 22. The distance S1 is the radial extension length of the notch 21, which enables the connection between the winding 42 and the conductive wire row 23 to have a certain radial creepage distance.

[0075] 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 10As 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 winding 42 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 winding 42 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 winding 42 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.

[0076] In practical applications, the axial extension length S2 of the retaining wall 25 needs to be determined according to the motor voltage. The higher the voltage, the larger S2 is, that is, the higher the voltage, the larger the axial creepage distance is.

[0077] In some embodiments of the present invention, the edge of the notch 21 has a chamfer, and the opening of the end of the notch 21 close to the conductive line row 23 is smaller than the opening of the end of the notch 21 away from the conductive line row 23. In other words, the inner opening of the notch 21 is smaller than the outer opening of the notch 21. In other words, the notch 21 is similar to a trumpet-shaped structure, and the large diameter end of the trumpet-shaped structure faces outward, and the small diameter end faces inward, such as Fig.13 The trumpet-shaped structure shown by the dotted line R in the figure makes it easy for the winding 42 to pass through the gap 21. In other words, the winding 42 enters from the large-diameter end of the trumpet-shaped structure and exits from the small-diameter end of the trumpet-shaped structure, and then connects to the conductive wire row 23, which reduces the difficulty of the winding 42 passing through the gap 21.

[0078] In some embodiments of the present invention, the winding 42 passes through the through hole 12, the first end of the winding 42 passes through the notch 21 and is connected to the connection portion 231, and the second end of the winding 42 extends to the outside of the stator core shaft 1. The winding 42 passes through the through hole 12, so that the internal cavity 11 of the stator core shaft 1 and the outside of the stator core shaft 1 can be routed. After the winding 42 is electrically connected to the conductive component 2, the electrical energy can be transmitted to the conductive component 2, and further transmitted to other locations through the conductive component 2.

[0079] In some embodiments of the present invention, referring to Figure 5 , Figure 7 , Fig. 9 , Figure 11-13 , Fig.17As shown, the connection part 231 of the conductive wire row 23 is provided with a connection hole 24, and the first end of the winding 42 is inserted into the connection hole 24 and welded to the conductive wire row 23. The winding 42 is welded to the conductive wire row 23, which can ensure that the winding 42 is firmly connected to the conductive wire row 23, thereby ensuring that the reliability of the electrical connection between the winding 42 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 winding 42 into the connection hole 24, it can be ensured that one end of the winding 42 is embedded in the conductive wire row 23, and the winding 42 is not easy to fall off from the conductive wire row 23. The winding 42 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.

[0080] In some embodiments of the present invention, referring to Figure 5 , Figure 7 , Fig. 9 , Fig.13 As 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 winding 42 to be inserted into the connection hole 24 through the notch 21, and reducing the difficulty of connecting the winding 42 and 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.

[0081] In some embodiments of the present invention, referring to Fig.17 As shown, the winding 42 includes a winding body 421 and an adapter 3, the adapter 3 passes through the through hole 12, the first end of the adapter 3 passes through the notch 21 and is connected to the connection portion 231, and the second end of the adapter 3 extends to the outside of the stator core shaft 1 to be electrically connected to the winding body 421. The winding body 421 is electrically connected to the conductive wire row 23 through the adapter 3. In this way, the winding 42 is divided into a multi-section structure, and the winding 42 does not need to be set too long, so that the operation of the adapter 3 passing through the through hole 12 and the operation of the winding body 421 being wound on the stator core 41 can be performed simultaneously, and finally the winding body 421 and the adapter 3 are connected, which is conducive to saving the assembly time and assembly difficulty of the stator assembly 10.

[0082] In some embodiments of the present invention, referring to Figure 5 , Figure 7 , Fig. 9 , Figure 11-13 , Fig.17As shown, the connection part 231 of the conductive wire row 23 is provided with a connection hole 24, and the first end of the adapter 3 is provided with a welding part 31, which is suitable for being inserted into the connection hole 24, and the outer peripheral surface of the welding part 31 is in contact with the hole wall of the connection hole 24, so that the welding part 31 is tightly connected with the hole wall of the connection hole 24, which is conducive to ensuring good electrical conduction between the adapter 3 and the conductive wire row 23. The outer end surface of the welding part 31 facing the notch 21 is flush with the outer end surface of the conductive wire row 23 facing the notch 21, so that the weld formed between the outer peripheral surface of the welding part 31 and the hole wall of the connection hole 24 is relatively flat, which can ensure that the welding quality of the welding part 31 and the conductive wire row 23 is high.

[0083] Optionally, a transition fit or a small interference fit is formed between the outer circumferential surface of the welding portion 31 and the hole wall of the connecting hole 24, so as to ensure that the welding portion 31 is firmly inserted into the connecting hole 24 before welding.

[0084] Optionally, the adapter 3 is welded and fixed 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 a 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, thereby improving the working reliability of the stator assembly 10.

[0085] 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.

[0086] In some embodiments of the present invention, referring to Figure 16-Figure 20As shown, 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 stator assembly 10 also includes an insulating plate 6, which separates the through hole 12 and the winding installation area in the axial direction. The adapter 3 also includes a main body 33 and a connecting portion 32, and the main body 33 connects the connecting portion 32 and the welding portion 31. The winding body 421 includes a winding lead-out portion 422 and a lead-out wire head 423, and the lead-out wire head 423 is connected to the winding lead-out portion 422. The main body 33 and the winding lead-out portion 422 are abutted against the insulating plate 6. In the axial direction of the stator core shaft 1, the connecting portion 32 and the lead-out wire head 423 are both bent in the direction away from the insulating plate 6, and the connecting portion 32 is connected to the lead-out wire head 423. That is, the connection part 32 and the lead-out wire head 423 are stacked in the radial direction. The reason for the axial bending is that the main body 33 and the winding lead-out part 422 are attached to the insulating plate 6. When the connection part 32 and the lead-out wire head 423 are welded, if the connection part 32 and the lead-out wire head 423 are stacked in the axial direction, the welding tool cannot be fixed. Therefore, the connection part 32 and the lead-out wire head 423 are set to be stacked in the radial direction, that is, Fig.17 The state shown is convenient for fixing the welding tooling.

[0087] 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 stator assembly 10 further includes a stator core 41, which is sleeved on the outer circumferential surface of the stator core shaft 1, and the winding 42 is wound on the stator core 41. The stator core 41 and the winding 42 form an excitation component 4, and the connecting portion 32 is bent upward in the axial direction of the stator core shaft 1 relative to the main body portion 33. The winding body 421 includes a winding lead-out portion 422 and a lead-out wire head 423 bent upward, and the main body portion 33 and the winding lead-out portion 422 are abutted against the insulating plate 6. The connection position between the connecting 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 tooling, so as to facilitate the connection and fixation of the connecting portion 32 and the lead-out wire head 423. Of course, in some embodiments not shown in the figures, the connecting portion 32 can be bent toward the insulating plate 6 in the axial direction of the stator core shaft 1 relative to the main body portion 33, that is, the connecting portion 32 is bent downward in the axial direction of the stator core shaft 1 relative to the main body portion 33, and is bent to the radially outer side of the excitation assembly 4, so as to facilitate the connection between the connecting portion 32 and the winding body 421 under the insulating plate 6.

[0088] Optionally, the connection portion 32 and the lead-out terminal 423 may be fixed by welding, bonding, or connection and fixation using a wire.

[0089] 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.

[0090] 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.

[0091] 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, a limiting protrusion 13 is provided on the outer circumferential surface of the stator core shaft 1, and the limiting protrusion 13 protrudes outward along the radial direction of the stator core shaft 1. A plurality of 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 plurality of through holes 12 are located at the same axial height. The plurality of through holes 12 can be used to penetrate a plurality of adapters 3, for example, one adapter 3 is passed through a through hole 12, or a plurality of adapters 3 are passed through a through hole 12.

[0092] 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.

[0093] Alternatively, the number of adapters 3 is less than the number of through holes 12 .

[0094] Or optionally, the number of adapters 3 is greater than the number of through holes 12 .

[0095] 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.

[0096] In some embodiments of the present invention, referring to Figure 3As 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.

[0097] In some embodiments of the present invention, referring to Figure 1 , Figure 4 , Figure 14-16 , Fig. 22 As shown, the stator core shaft 1 has an outlet port connected to the cavity 11, and the conductive component 2 extends out of the stator core shaft 1 through the outlet port. In the related art, the cable is led out from the outlet port after passing through the through hole. The cable is relatively soft, and the position of the cable is easily changed when the motor is working, thereby making the sealing of the cable and the outlet port 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.

[0098] In some embodiments of the present invention, the stator core shaft 1 includes a first rod segment 14, a limiting protrusion 13 and a second rod segment 15, the limiting protrusion 13 protrudes outward along the radial direction of the stator core shaft 1, 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. The end of the first rod segment 14 away from the second rod segment 15 has an outlet port, and the outlet port is connected to the cavity 11. For details, refer to 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, and the outlet port 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.

[0099] In some embodiments of the present invention, the joint between the conductive component 2 and the outlet port is sealed by a sealing structure. After the joint between the conductive component 2 and the outlet port is sealed by the sealing structure, the sealing effect is good, and leakage is not likely to occur at the sealing position, which is beneficial to improving the service life and safety of the stator assembly 10.

[0100] In some embodiments of the present invention, referring to Figure 6-Figure 11As 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 line 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. The fixing member 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. The cavity 11 inside the stator core shaft 1 has a fixing member. The fixing member is fixedly connected to the fixing hole 28 on the insulating member 22. The escape space 27 is used to escape the fixing member to prevent other parts of the insulating member 22 from interfering with the fixing member. The outer peripheral surface of the insulating member 22 is provided with an outwardly protruding rib 26. The rib 26 abuts against the cavity wall of the cavity 11, and the rib 26 is separated from the escape space 27. 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 wall of the cavity 11, thereby ensuring 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 part, 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, thereby avoiding interference between the rib 26 and the fixing part.

[0101] In some embodiments of the present invention, referring to Figure 6 , Figure 8-Figure 10 As 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.

[0102] Reference Fig. 22 As shown, the linear motor 100 according to the second embodiment of the utility model includes the stator assembly 10 of the above embodiment.

[0103] In some embodiments of the present invention, referring to Fig. 22 As shown, the linear motor 100 further includes a mover assembly 20 , which can move along the axial direction of the stator core shaft 1 .

[0104] In some embodiments of the present invention, referring to Figure 16-17 , Fig. 22 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. 22The 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.

[0105] According to the linear motor 100 of the embodiment of the utility model, the stator assembly 10 thereof is provided with a notch 21 on the insulating part 22, and the notch 21 has a certain length in the radial direction of the stator core shaft 1, so that the winding 42 is connected to the conductive wire row 23 after a certain radial displacement, thereby enabling the connection between the winding 42 and the conductive wire row 23 to have a certain radial creepage distance, which is beneficial to improving the safety of use.

[0106] Reference Figure 22-Figure 23 As 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.

[0107] 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.

[0108] 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.

[0109] 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.

[0110] In some embodiments of the present invention, referring to Fig. 22 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.

[0111] In some embodiments of the present invention, referring to Fig. 22 As 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.

[0112] 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.

[0113] In some embodiments of the present invention, referring to Fig. 22 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.

[0114] Optionally, the buffer sleeve 8 is made of rubber or silicone material, which has a better effect of absorbing collision energy.

[0115] Reference Fig. 22 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.

[0116] Reference Figure 22-Figure 23 As shown, the electromagnetic suspension 1000 according to the embodiment of the third aspect of the utility model includes the linear motor 100 of the above embodiment.

[0117] According to the electromagnetic suspension 1000 of the embodiment of the utility model, the stator assembly 10 of the linear motor 100 is provided with a notch 21 on the insulating part 22, and the notch 21 has a certain length in the radial direction of the stator core shaft 1, so that the winding 42 is connected to the conductive wire row 23 after a certain radial displacement, thereby enabling the connection between the winding 42 and the conductive wire row 23 to have a certain radial creepage distance, which is beneficial to improving the safety of use.

[0118] Reference Fig.24 As shown, a vehicle 10000 according to an embodiment of the fourth aspect of the utility model comprises the electromagnetic suspension 1000 of the above-mentioned embodiment.

[0119] According to the vehicle 10000 of the embodiment of the utility model, the stator assembly 10 of the electromagnetic suspension 1000 is provided with a notch 21 on the insulating part 22, and the notch 21 has a certain length in the radial direction of the stator core shaft 1, so that the winding 42 is connected to the conductive wire row 23 after a certain radial displacement, thereby enabling the connection between the winding 42 and the conductive wire row 23 to have a certain radial creepage distance, which is beneficial to improving the safety of use.

[0120] 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.

[0121] 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.

[0122] 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.

[0123] 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 assembly (10), characterized in that: include: A stator core shaft (1), wherein the interior of the stator core shaft (1) has a cavity (11), and the shaft wall of the stator core shaft (1) is provided with a through hole (12) communicating with the cavity (11); and A conductive component (2), the conductive component (2) being installed in the cavity (11), the conductive component (2) comprising a conductive wire row (23) and 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), the insulating member (22) is provided with a notch (21), the notch (21) being arranged opposite to the through hole (12), the notch (21) terminating at the radial outer side of the conductive wire row (23), and penetrating the radial outer side of the insulating member (22) to expose a connection portion (231) of the conductive wire row (23); and A winding (42), one end of the winding (42) is connected to the connection portion (231).

2. The stator assembly (10) according to claim 1, characterized in that: The maximum distance between the connection part (231) of the conductive wire row (23) and the axis of the stator core shaft (1) is smaller than the distance between the radial outer side surface of the insulating part (22) and the axis of the stator core shaft (1).

3. The stator assembly (10) according to claim 1, characterized in that: The outer peripheral surface of the stator core shaft (1) is provided with a winding installation area for installing the winding (42); in the axial direction of the stator core shaft (1), the winding installation area is located on one side of the through hole (12); 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) is at a preset distance from one end of the insulating member (22) close to the winding installation area in the axial direction of the stator core shaft (1); the preset distance is greater than 0.

4. The stator assembly (10) according to claim 3, characterized in that: The edge of the notch (21) has a chamfer, and the opening of one end of the notch (21) close to the conductive line row (23) is smaller than the opening of one end of the notch (21) away from the conductive line row (23).

5. The stator assembly (10) according to claim 1, characterized in that: The winding (42) passes through the through hole (12), a first end of the winding (42) passes through the notch (21) and is connected to the connection portion (231), and a second end of the winding (42) extends to the outside of the stator core shaft (1).

6. The stator assembly (10) according to claim 5, characterized in that: A connection hole (24) is provided at a connection portion (231) of the conductive wire row (23), and the first end of the winding (42) is inserted into the connection hole (24) and fixed to the conductive wire row (23) by welding.

7. The stator assembly (10) according to claim 6, characterized in that: In the radial direction of the stator core shaft (1), the notch (21) is aligned with the connecting hole (24), and the projection of the connecting hole (24) in a projection plane perpendicular to the normal of the notch (21) is smaller than the projection of the notch (21) in the projection plane.

8. The stator assembly (10) according to claim 5, characterized in that: The winding (42) comprises a winding body (421) and a transition piece (3), wherein the transition piece (3) passes through the through hole (12), a first end of the transition piece (3) passes through the notch (21) and is connected to the connection portion (231), and a second end of the transition piece (3) extends to the outside of the stator core shaft (1) to be electrically connected to the winding body (421).

9. The stator assembly (10) according to claim 8, characterized in that: The connecting portion (231) is provided with a connecting hole (24), the first end of the adapter (3) is provided with a welding portion (31), the welding portion (31) is suitable for being inserted into the connecting hole (24), the outer peripheral surface of the welding portion (31) is in contact with the hole wall of the connecting hole (24), and the outer end surface of the welding portion (31) facing the notch (21) is flush with the outer end surface of the conductive wire row (23) facing the notch (21).

10. The stator assembly (10) according to claim 9, characterized in that: The outer circumferential surface of the stator core shaft (1) is provided with a winding installation area for installing the winding (42); the stator assembly (10) further comprises an insulating plate (6), the insulating plate (6) separating the through hole (12) and the winding installation area in the axial direction; the adapter (3) further comprises a main body portion (33) and a connecting portion (32), the main body portion (33) connecting the connecting portion (32) and the welding portion (31); the winding body (421) comprises a winding lead-out portion The stator core shaft (1) has a connecting portion (422) and a lead-out wire head (423), the lead-out wire head (423) being connected to the winding lead-out portion (422), the main body (33) and the winding lead-out portion (422) being abutted against 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 both bent in a direction away from the insulating plate (6), and the connecting portion (32) is connected to the lead-out wire head (423).

11. The stator assembly (10) according to any one of claims 1 to 10, 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).

12. The stator assembly (10) according to claim 11, characterized in that: There are three through holes (12), and the interval between any two adjacent through holes (12) is 120°.

13. The stator assembly (10) according to any one of claims 1 to 10, characterized in that: One end of the stator core shaft (1) is a wire outlet port, the wire outlet port is in communication with the cavity (11), and the conductive component (2) extends out of the stator core shaft (1) through the wire outlet port.

14. The stator assembly (10) according to claim 13, characterized in that: The matching position between the conductive component (2) and the outlet port is sealed by a sealing structure.

15. A linear motor (100), characterized in that: The invention comprises a stator assembly (10) according to any one of claims 1 to 14.

16. The linear motor (100) according to claim 15, characterized in that: Also includes: A mover assembly (20), wherein the mover assembly (20) is capable of moving along the axial direction of the stator core shaft (1).

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

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

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