Stator, linear motor, electromagnetic shock absorber, suspension assembly and vehicle

Abstract

A stator, a linear motor, an electromagnetic shock absorber, a suspension assembly and a vehicle. The stator comprises a first shaft section and a second shaft section connected to the first shaft section; a plurality of layers of winding slots are formed in the periphery of the first shaft section in the axial direction; a wiring channel communicated with the winding slots is formed in the slot bottoms of the winding slots; and the wiring channel extends to the peripheral side of the second shaft section.

Description

Stator, linear motor, electromagnetic shock absorber, suspension assembly and vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on December 29, 2023, with application number 202311871169.X and entitled “STATOR, LINEAR MOTOR, ELECTROMAGNETIC DISBURGER, SUSPENSION ASSEMBLY AND VEHICLE”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to the technical field of vehicle vibration reduction, and in particular, to a stator, a linear motor, an electromagnetic vibration absorber, a suspension assembly, and a vehicle. Background Art

[0004] A linear drive motor generally includes a stator and a mover. The stator includes a winding coil wound on an iron core shaft. The winding coil is electrically connected to a power supply and can generate a magnetic field when energized to generate a magnetic force with the mover, thereby driving the mover to move in a straight line.

[0005] In related technologies, when a wire is wound around an iron core shaft to form a winding coil, the two ends of the wire are typically located outside the coil winding, running axially along the outer side of the iron core shaft. This axially running winding outside the coil occupies radial space (approximately the diameter of the winding bundle), limiting the motor's winding full slot ratio.

[0006] Summary of the Invention

[0007] An object of the present disclosure is to provide a stator, a linear motor, an electromagnetic vibration absorber, a suspension assembly, and a vehicle to at least partially solve the problems existing in the related art.

[0008] In order to achieve the above-mentioned objectives, the present disclosure provides a stator, which includes a first shaft segment and a second shaft segment connected to the first shaft segment, wherein the outer periphery of the first shaft segment is provided with multiple layers of winding grooves along the axial direction, and the bottom of the winding groove is provided with a wiring channel connected to the winding groove, and the wiring channel extends to the outer peripheral side of the second shaft segment.

[0009] Optionally, the outer side wall of the second shaft segment is provided with a first wire passing groove extending along the wall surface, and the first wire passing groove is connected to the wiring channel.

[0010] Optionally, there are multiple wiring channels and multiple first wire grooves, and each first wire groove corresponds to and is connected to one wiring channel.

[0011] Optionally, the first wire passing groove and the wiring channel extend axially respectively, and the corresponding first wire passing groove and the wiring channel are aligned.

[0012] Optionally, a loop groove is provided on the groove wall of the winding groove, one end of the loop groove extends to the groove opening of the winding groove, and the other end of the loop groove extends to the routing channel.

[0013] Optionally, the first shaft section includes a core shaft and a sleeve shaft sleeved on the outside of the core shaft, and the wiring channel is located between the core shaft and the sleeve shaft.

[0014] Optionally, a second wire groove is formed on one of the inner side wall of the sleeve shaft and the outer side wall of the core shaft, and the wiring channel includes the second wire groove.

[0015] Optionally, a third wire passing groove is provided on the other of the inner side wall of the sleeve shaft and the outer side wall of the core shaft, and the third wire passing groove corresponds to the position of the second wire passing groove, so that the third wire passing groove and the second wire passing groove are enclosed to form the wiring channel.

[0016] Optionally, the core shaft and the second shaft segment are integrally formed.

[0017] Optionally, the diameter of the core shaft is larger than the diameter of the second shaft segment.

[0018] Optionally, the sleeve shaft includes a plurality of stacked annular gear discs, and the central portion of each gear disc forms an axially protruding support ring, and the two adjacent gear discs are supported by the support ring to form the winding groove between the two adjacent gear discs, and the support ring is provided with a wire passing hole, and the wire passing hole connects the winding groove and the wiring channel.

[0019] According to a second aspect of the present disclosure, a linear motor is provided, comprising a mover and the above-mentioned stator, wherein the mover is movable in an axial direction relative to the stator.

[0020] Optionally, the mover includes a shell and a magnet, and the magnet is arranged on the inner wall of the shell, wherein the first shaft segment is arranged inside the shell, and one end of the second shaft segment extends out of the shell.

[0021] Optionally, the mover further includes a guide post provided in the housing, the guide post extends axially, and the first shaft segment is provided with a guide groove for the guide post to extend into.

[0022] According to a third aspect of the present disclosure, there is provided an electromagnetic vibration absorber comprising the above-mentioned linear motor.

[0023] According to a fourth aspect of the present disclosure, a suspension assembly is provided, comprising a suspension body and the above-mentioned electromagnetic shock absorber, wherein the mover is connected to the suspension body, and the stator is used to be connected to a vehicle body.

[0024] According to a fifth aspect of the present disclosure, a vehicle is provided, comprising the above-mentioned suspension assembly.

[0025] Through the above technical solution, the two wire ends of the coil winding wound in the winding slot can be routed in the routing channel at the bottom of the slot (passing from the bottom of one winding slot to the bottom of another winding slot), and there is no need to open a gap near the slot mouth of the winding slot for the wire ends to route, so that the entire space of the winding slot can be used to accommodate the winding coil, thereby improving the slot fill rate of the winding slot. When the stator is used for a linear motor, a greater electromagnetic force of the linear motor can be achieved in the same volume, thereby improving the motor performance.

[0026] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0028] FIG1 is a schematic diagram of a wiring method of a winding coil in the prior art;

[0029] FIG2 is a front cross-sectional view of a linear motor exemplarily shown according to the present disclosure;

[0030] FIG3 is an enlarged view of portion A in FIG2 ;

[0031] FIG4 is a schematic diagram of a wiring arrangement of a winding coil according to an exemplary embodiment of the present disclosure;

[0032] FIG5 is a top view of a toothed disc according to an exemplary embodiment of the present disclosure;

[0033] FIG6 is a schematic diagram of a first shaft segment and a shaft core according to an exemplary embodiment of the present disclosure;

[0034] FIG7 is a schematic diagram of a first shaft segment and a second shaft segment according to an exemplary embodiment of the present disclosure, wherein the first shaft segment and the second shaft segment are integrally formed;

[0035] FIG8 is a schematic diagram of an electromagnetic vibration absorber according to an exemplary embodiment of the present disclosure;

[0036] FIG9 is a schematic diagram of a suspension assembly according to an exemplary embodiment of the present disclosure;

[0037] FIG10 is a schematic diagram of a vehicle according to an exemplary embodiment of the present disclosure.

[0038] Explanation of the accompanying symbols: 1-linear motor; 2-electromagnetic shock absorber; 3-suspension assembly; 301-suspension body; 4-vehicle; 401-body; 100-stator; 101-shaft shoulder; 110-first shaft section; 111-winding coil; 112-winding groove; 113-guide groove; 120-second shaft section; 121-first wire groove; 200-mover; 210-housing; 220-magnet; 230-guide column; 300-wiring channel; 310-second wire groove; 320-third wire groove; 400-return groove; 510-core shaft; 520-sleeve shaft; 521-toothed disc; 522-support ring; 523-wire hole. DETAILED DESCRIPTION

[0039] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0040] In the present disclosure, unless otherwise specified, the directional words used, such as "inside, outside", "up, down", "front, rear", etc., may be defined based on the actual use direction of the relevant components, or may be based on the structure itself. For example: a heat insulation portion is provided between the exhaust muffler and the "inner wall" of the second chamber, which means that the exhaust muffler is arranged in the accommodating space of the second chamber, and a heat insulation portion is provided between the exhaust muffler and the wall surface inside the second chamber; a guide groove is provided on the "upper end surface" of the oil baffle, which means that after the oil pan assembly is installed on the engine body, a guide groove is provided on the end surface of the oil baffle close to the engine body, that is, the "up and down" here refers to the corresponding up and down after the oil pan assembly is assembled on the engine body and the engine is assembled on the vehicle body; the "front cabin" or "rear cabin" of the vehicle is based on the length direction of the vehicle, wherein the front direction of the vehicle is front and the rear direction of the vehicle is rear, that is, the front cabin refers to the cabin close to the front of the vehicle, and the rear cabin refers to the cabin close to the rear of the vehicle.

[0041] In addition, in this disclosure, the terms "first", "second", etc. are used to distinguish one element from another and do not have order or importance. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0042] A linear motor is an electric motor that directly generates linear motion through electromagnetic force. Linear motors have many application scenarios. For example, the electromagnetic suspension currently on the market can use linear motors to achieve active shock absorption.

[0043] 2-4 , according to a first aspect of the present disclosure, a stator 100 is provided. The stator 100 includes a first shaft segment 110 and a second shaft segment 120 connected to the first shaft segment 110. The stator 100 can be assembled by welding or other mechanical means, or the first shaft segment 110 and the second shaft segment 120 can be integrally formed. The first shaft segment 110 has a plurality of winding grooves 112 arranged axially on its outer periphery. A wiring channel 300 communicating with the winding grooves 112 is provided at the bottom of the winding grooves 112. The wiring channel 300 extends to the outer periphery of the second shaft segment 120. Specifically, the wiring channel 300 can extend directly to the outer periphery of the second shaft segment 120. Alternatively, when the diameter of the first shaft segment 110 is larger than the diameter of the second shaft segment 120, the wiring channel 300 can first extend to a shaft shoulder 101 between the first shaft segment 110 and the second shaft segment 120. The shaft shoulder 101 refers to the end surface of the first shaft segment 110 connected to the second shaft segment 120, and then extends to the outer periphery of the second shaft segment 120. The present disclosure does not limit the number of the wiring channels 300 , which may be one, three, etc., and may be adaptively designed according to the type of the winding coil 111 wound in the winding slot 112 .

[0044] The present disclosure does not limit the formation method of the winding groove 112. For example, in the embodiment shown in FIG7, the first shaft segment 110 can be configured as a hollow cylinder, and the winding groove 112 can be formed by turning directly on the outer wall surface of the first shaft segment 110 using a turning tool. In addition, in the embodiment shown in FIG2, the winding groove 112 can also be formed by the accommodation space reserved between two adjacent toothed discs 521, which will be described in detail below.

[0045] The above-mentioned "bottom position" of the winding groove 112 corresponds to the inner position of each layer of winding coil 111, and the present disclosure does not limit its specific setting position. For example, the wiring channel 300 can also be directly opened on the inner side of the groove bottom of the winding groove 112 (that is, the side of the groove bottom of the winding groove 112 facing the winding coil), as long as it does not occupy the accommodating space of the winding groove 112, so that the winding groove 112 and the wiring channel 300 can be directly connected. In addition, in the embodiment shown in Figure 3, the wiring channel 300 can be opened on the outer side of the groove bottom of the winding groove 112 (that is, the side of the groove bottom of the winding groove 112 facing away from the winding coil 111). In this case, it is necessary to additionally set up the wire hole 523 described below to connect the winding groove 112 and the wiring channel 300.

[0046] The present disclosure does not limit the winding coils 111 wound in the winding slots 112. For example, it may include three groups of phase lines, namely phase A, phase B and phase C. The wiring method between the three groups of phase lines can be star-connected, or it can also be Y-connected, etc. Since the wiring method of the winding coils 111 is well known to those skilled in the art, it will not be explained in detail here. In the embodiment of the present disclosure, each winding slot 112 can be provided with only one type of winding coil 111, such as phase A, phase B or phase C. In addition, in some other embodiments, each winding slot 112 can also be provided with at least two types of winding coils 111, such as phase A + phase B, phase B + phase C, phase A + phase B + phase C, etc. It should be noted that multiple winding coils 111 belonging to the same phase can be wound by a single wire, that is, after the winding is completed in one winding slot 112, its wire end passes through the wiring channel 300 into another winding slot 112 to continue winding, and so on and so forth until the wiring is completed. In addition, in some other embodiments, multiple winding coils 111 of the same phase can also be independent of each other, that is, they are respectively wound by their own wires and located in their respective corresponding winding slots 112. In this case, a group of wire ends of two adjacent winding coils 111 need to be electrically connected in the wiring channel 300 to form a series relationship.

[0047] By using the above technical solution, the two ends of the coil winding 111 wound in the winding slot 112 can be routed in the routing channel 300 at the bottom of the slot (from the bottom of one winding slot 112 to the bottom of another winding slot 112), and there is no need to open a gap near the slot mouth of the winding slot 112 for the wire ends to route. As a result, the entire space of the winding slot 112 can be used to accommodate the winding coil 111, thereby improving the slot fill rate of the winding slot 112. When the stator is used for a linear motor, a greater electromagnetic force of the linear motor can be achieved at the same volume, thereby improving the motor performance. In order to more intuitively explain that arranging the wire ends of the winding coil 111 on the outside for routing will occupy the accommodation space of the winding slot 112, refer to Figure 1. In this embodiment, the wire ends of the outside routing will occupy the radial space of the winding slot 112, resulting in a waste of space in the winding slot 112. Specifically, part 700 in Figure 1 is the wasted space.

[0048] 2, 6 and 7, in an embodiment of the present disclosure, the outer wall of the second shaft section 120 may be provided with a first wire groove 121 extending along the wall surface, and the first wire groove 121 may be connected to the wiring channel 300, so that the wire ends of the winding coil 111 can extend out of the wiring channel 300 and continue to be routed through the first wire groove 121. This design enables the wire ends of the winding coil 111 to directly transition from the wiring channel 300 to the first wire groove 121 on the outer side of the second shaft section 120. This outer arrangement facilitates fixing operations such as gluing, injection molding, and clamping, which is safe and convenient.

[0049] The present disclosure does not limit the number of the wiring channel 300 and the first wire duct 121. For example, in some embodiments, there can be multiple wiring channels 300 and multiple first wire ducts 121, and each first wire duct 121 corresponds to and is connected to one wiring channel 300. In addition, in some other embodiments, there can be only one wiring channel 300 and one first wire duct 121.

[0050] In some embodiments, the first wire groove 121 and the wiring channel 300 can extend axially respectively, and the corresponding first wire groove 121 and wiring channel 300 are aligned. "Aligned" here means that the first wire groove 121 and the wiring channel 300 have the same circumferential position and radial position in their respective corresponding axial segments, that is, the wire end of the winding coil 111 does not need to change its wiring direction after extending from the wiring channel 300, and can be directly extended into the first wire groove 121. With such a design, there is no need to forcibly change the natural direction of the wire making up the winding coil 111, which effectively improves the durability of the wire.

[0051] Since the wire is wound from the inside to the outside in the winding groove 112 to obtain the winding coil 111, one end of the wire end will be located on the outside of the winding coil 111 after the winding is completed. In order to facilitate extending it from the outside to the inside into the wiring channel 300, referring to Figures 2-3, in the embodiment of the present disclosure, the groove wall of the winding groove 112 can be provided with a return groove 400, one end of the return groove 400 extends to the notch of the winding groove 112, and the other end of the return groove 400 extends to the wiring channel 300. With such a design, after winding each winding groove 112 is completed, the wire end located on the outside can be extended into the wiring channel 300 through the return groove 400, which is simple to operate. Moreover, since the return groove 400 is provided on the groove wall, it does not need to occupy the internal space of the winding groove 112, which can further improve the full slot rate of the winding groove 112, thereby improving the performance of the motor.

[0052] The present disclosure does not limit the specific location of the return groove 400 , and the return groove 400 may be located on the upper groove wall of the winding groove 112 , or may be located on the lower groove wall of the winding groove 112 .

[0053] 3 , in an embodiment of the present disclosure, the first shaft section 110 may include a core shaft 510 and a sleeve shaft 520 sleeved on the outside of the core shaft 510, and the wiring channel 300 may be located between the core shaft 510 and the sleeve shaft 520. With such a design, the wiring channel 300 can be formed before the core shaft 510 and the sleeve shaft 520 are assembled, thereby avoiding the difficulty of opening the wiring channel 300 after the two are assembled. In addition, in the embodiment shown in FIG7 , the first shaft section 110 may also only include a hollow cylindrical tube, and a plurality of winding grooves 112 may be opened on the outside of the cylindrical tube, and the hollow position of the cylindrical tube can be directly used for the wiring channel 300. In this case, the bottom of each winding groove 112 needs to be provided with a wire hole 523 connecting the winding groove 112 and the hollow position, and the groove wall of the winding groove 112 needs to be provided with a return groove 400 (not shown in the figure) connecting the hollow position.

[0054] Furthermore, the present disclosure does not limit the specific formation method of the wiring channel 300. For example, in the embodiment shown in FIG4 , one of the inner sidewall of the sleeve shaft 520 and the outer sidewall of the core shaft 510 may be provided with a second wire groove 310, and the wiring channel 300 may include the second wire groove 310. With this design, the wire ends of the winding coil 111 can be routed directly through the second wire groove 310 without occupying the accommodation space of the winding groove 112.

[0055] Furthermore, in some other embodiments, a third wire groove 320 may be formed on the other of the inner sidewall of the sleeve shaft 520 and the outer sidewall of the core shaft 510. The third wire groove 320 may correspond to the second wire groove 310 in position, so that the third wire groove 320 and the second wire groove 310 together form a wiring channel 300. The wiring channel 300 formed by the third wire groove 320 and the second wire groove 310 can be suitable for wires with larger diameters.

[0056] 6 , in some embodiments, the mandrel 510 can be integrally formed with the second shaft segment 120. This integral molding can reduce assembly steps and lower product defect rates. Furthermore, in other embodiments, the mandrel 510 and the second shaft segment 120 can also be welded or assembled by other mechanical means.

[0057] 2 to 4 , in some embodiments of the present disclosure, the sleeve shaft 520 may include a plurality of stacked annular toothed discs 521 , the central portion of each toothed disc 521 may form an axially protruding support ring 522 , and the two adjacent toothed discs 521 may be supported by the support ring 522 to form a winding groove 112 between the two adjacent toothed discs 521 . It should be noted that, with reference to FIG4 , the support rings 522 of the two toothed discs 521 located at the upper and lower ends of the first shaft section 110 may only protrude toward the direction of the adjacent toothed discs 521 , and the support rings 522 of the remaining toothed discs 521 may protrude toward both sides of the toothed discs 521 . In addition, in some other embodiments, the toothed disc 521 located at the upper end may not have a support ring 522 , and the support rings 522 of the remaining toothed discs 521 may all protrude toward the upper side. The present disclosure does not limit the specific form of the support ring 522 . It should be noted that when the wiring channel 300 is located on the side of the support ring 522 close to the core shaft 510, the support ring 522 needs to be provided with a wire hole 523, and the wire hole 523 connects the winding groove 112 and the wiring channel 300. When the wiring channel 300 is located on the side of the support ring 522 away from the core shaft 510, the wire hole 523 is not required.

[0058] It should be noted that Figure 3 only shows one wire hole 523, one winding groove 112 and one return groove 400, which is only an exemplary display. In fact, a winding groove 112 is formed between each two adjacent toothed discs 521, and the disk surface of each toothed disc 521 is provided with a return groove 400 (the disk surface corresponds to the groove wall mentioned above), and each support ring 522 is provided with a wire hole 523 to allow the wire ends on the inner side of the winding coil 111 to enter the wiring channel 300 during winding. After the winding of each winding groove 112 is completed, the wire ends on the outside can extend into the wiring channel 300 through the corresponding return groove 400.

[0059] According to the second aspect of the present disclosure, a linear motor 1 is provided, comprising a mover 200 and the above-mentioned stator 100. The mover 200 can move along the axial direction relative to the stator 100. Since the linear motor 1 has all the beneficial effects of the above-mentioned stator, they are not repeated here.

[0060] 2 , in an embodiment of the present disclosure, the mover 200 may include a housing 210 and a magnet 220 disposed on the inner wall of the housing 210. The first shaft segment 110 may be disposed within the housing 210, and one end of the second shaft segment 120 may extend out of the housing 210. With this design, when power is applied to the winding coil 111, a magnetic field is generated, which in turn generates a magnetic force with the magnet 220 on the inner wall of the housing 210, thereby driving the linear motor 1.

[0061] To enable linear motion of the mover 200 relative to the stator 100, referring to FIG. 2 , in an embodiment of the present disclosure, the mover 200 may further include a guide post 230 disposed within the housing 210. The guide post 230 extends axially, and the first shaft segment 110 may be provided with a guide groove 113 into which the guide post 230 extends. In embodiments where the first shaft segment 110 includes the aforementioned core shaft 510, the guide groove 113 may be provided within the core shaft 510. Furthermore, in the embodiment shown in FIG. 7 , the hollow portion may directly serve as the guide groove 113. To prevent frictional interference between the guide post 230 extending into the guide groove 113 and the portion of the winding coil 111 located within the hollow portion, the inner wall surface of the hollow portion of the first shaft segment 110 may be provided with a groove for routing the wire ends of the winding coil 111. Placing the wire within the groove avoids frictional interference with the guide post 230.

[0062] 8 , according to a third aspect of the present disclosure, an electromagnetic vibration absorber 2 is provided, comprising the above-mentioned linear motor 1 . Since the electromagnetic vibration absorber 2 has all the beneficial effects of the above-mentioned linear motor 1 , details thereof will not be repeated here.

[0063] 9 , according to a fourth aspect of the present disclosure, a suspension assembly 3 is provided, comprising a suspension body 301 and the above-mentioned electromagnetic shock absorber 2, wherein a mover 200 is connected to the suspension body 301 , and a stator 100 is used to be connected to a body 401 of a vehicle 4. Since the suspension assembly 3 has all the beneficial effects of the above-mentioned electromagnetic shock absorber 2, they will not be described in detail here.

[0064] 10 , according to a fifth aspect of the present disclosure, a vehicle 4 is provided, comprising the suspension assembly 3 described above. Since the vehicle 4 has all the beneficial effects of the suspension assembly 3 described above, they will not be described in detail here.

[0065] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0066] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0067] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A stator (100), characterized in that, The stator (100) includes a first shaft section (110) and a second shaft section (120) connected to the first shaft section (110). Wherein, a plurality of winding grooves (112) are axially arranged on the outer periphery of the first shaft section (110), a wire routing channel (300) communicating with the winding groove (112) is provided at the bottom of the winding groove (112), and the wire routing channel (300) extends to the outer peripheral side of the second shaft section (120).

2. The stator (100) according to claim 1, characterized in that, A first wire passing groove (121) extending along the wall surface is formed on the outer side wall of the second shaft section (120), and the first wire passing groove (121) communicates with the wire routing channel (300).

3. The stator (100) according to claim 1 or 2, characterized in that, Both the wire routing channel (300) and the first wire passing groove (121) are multiple, and each first wire passing groove (121) corresponds to and communicates with one wire routing channel (300).

4. The stator (100) according to claim 3, characterized in that, The first wire passing groove (121) and the wire routing channel (300) respectively extend axially, and the corresponding first wire passing groove (121) and wire routing channel (300) are aligned.

5. The stator (100) according to any one of claims 1-4, characterized in that, A wire return groove (400) is formed in the groove wall of the winding groove (112), one end of the wire return groove (400) extends to the groove opening of the winding groove (112), and the other end of the wire return groove (400) extends to the wire routing channel (300).

6. The stator (100) according to any one of claims 1-5, characterized in that, The first shaft section (110) includes a core shaft (510) and a sleeve shaft (520) sleeved on the outer side of the core shaft (510), and the wire routing channel (300) is located between the core shaft (510) and the sleeve shaft (520).

7. The stator (100) according to claim 6, characterized in that, A second wire passing groove (310) is formed in one of the inner side wall of the sleeve shaft (520) and the outer side wall of the core shaft (510), and the wire routing channel (300) includes the second wire passing groove (310).

8. The stator (100) according to claim 7, characterized in that, A third wire passing groove (320) is formed in the other of the inner side wall of the sleeve shaft (520) and the outer side wall of the core shaft (510), and the third wire passing groove (320) corresponds to the second wire passing groove (310) in position, so that the third wire passing groove (320) and the second wire passing groove (310) enclose to form the wire routing channel (300).

9. The stator (100) according to any one of claims 6 - 8, characterized in that, The core shaft (510) and the second shaft section (120) are integrally formed.

10. The stator (100) according to any one of claims 6 - 9, characterized in that, The diameter of the core shaft (510) is larger than the diameter of the second shaft section (120).

11. The stator (100) according to any one of claims 6-10, characterized in that, The sleeve shaft (520) includes a plurality of stacked annular tooth discs (521), a support ring (522) protruding axially is formed in the central part of each tooth disc (521), and adjacent two tooth discs (521) are supported by the support ring (522) to form the winding groove (112) between the adjacent two tooth discs (521), and a wire passing hole (523) is formed in the support ring (522), and the wire passing hole (523) communicates the winding groove (112) and the wire routing channel (300).

12. A linear motor (1), characterized in that, It includes a rotor (200) and the stator (100) according to any one of claims 1-11, and the rotor (200) can move axially relative to the stator (100).

13. The linear motor (1) according to claim 12, characterized in that, The mover (200) includes a housing (210) and a permanent magnet (220), the permanent magnet (220) being disposed on the inner wall of the housing (210). Among them, the first shaft section (110) is disposed inside the housing (210), and one end of the second shaft section (120) extends out of the housing (210).

14. The linear motor (1) according to claim 13, characterized in that, The mover (200) further includes a guide post (230) disposed in the housing (210), the guide post (230) extending along the axial direction, and the first shaft section (110) is provided with a guide groove (113) for the guide post (230) to extend into.

15. An electromagnetic shock absorber (2), characterized in that, Comprising the linear motor (1) according to any one of claims 12-14.

16. A suspension assembly, characterized in that, Comprising a suspension main body (301) and the electromagnetic shock absorber (2) according to claim 15, wherein the mover (200) is connected to the suspension main body (301), and the stator (100) is used for connecting to the vehicle body (401) of the vehicle (4).

17. A vehicle, characterized in that, Comprising the suspension assembly (3) according to claim 16.

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