Stator assembly, linear motor, suspension system and vehicle

Abstract

The utility model discloses a stator assembly, a linear motor, a suspension system and a vehicle. The stator assembly comprises a stator shaft core, an excitation assembly, a limiting member and a buffer member. The excitation assembly sleeves the stator shaft core, the limiting piece is fixedly connected to one end of the stator shaft core to stop the excitation assembly, and the buffer piece is located at one end of the stator shaft core and connected to the limiting piece. According to the stator assembly, the assembling difficulty can be simplified, and the service life of the stator assembly can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and in particular to a stator component, a linear motor, a suspension system and a vehicle. Background Art

[0002] In the related art, the motor adopts an integrated stator shaft core, and a shaft shoulder is formed on the stator shaft core. The stator shaft core shaft shoulder stops the excitation assembly to prevent it from falling off the stator shaft core. However, the shaft shoulder easily blocks the structural installation on the stator shaft core, increasing the difficulty of subsequent installation of components such as coils, and the structure of the shaft shoulder is fixed, making it difficult to add a connection structure on the shaft shoulder. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a stator assembly, which can simplify the assembly difficulty and increase the service life of the stator assembly.

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

[0005] The utility model also provides a suspension system with the linear motor.

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

[0007] According to the stator assembly of the embodiment of the utility model, it includes: a stator shaft core; an excitation assembly, the excitation assembly is sleeved on the stator shaft core; a limiter, the limiter is fixedly connected to one end of the stator shaft core to stop the excitation assembly; a buffer, the buffer is located at one end of the stator shaft core and connected to the limiter.

[0008] According to the stator assembly of the embodiment of the utility model, the limiter can position the excitation assembly to limit the position of the excitation assembly on the stator shaft core and limit the axial movement of the excitation assembly along the stator shaft core. During the installation of the stator shaft core, the assembly of the excitation assembly on the stator shaft core will not be blocked by the limiter, which can simplify the operational difficulty of assembling the stator assembly. At the same time, the limiter can also serve as an intermediate connector to connect the buffer, so that the buffer is connected to one end of the stator shaft core along the axial direction through the limiter. When the stator shaft core and other structures produce relative axial movement, the buffer can play a role in buffering and vibration reduction, avoiding direct collision of the stator assembly with other structures along the axial direction, so as to protect the stator shaft core and other structures.

[0009] In some embodiments, the limiting member is a nut, one end of the stator shaft core is provided with an external thread, and the nut includes: a main body ring, the main body ring is annular, and an internal thread is provided on the inner circumference of the main body ring, and the internal thread of the main body ring is matched with the external thread of the stator shaft core.

[0010] Furthermore, the nut further comprises: a clamping portion, the clamping portion is arranged at an end of the main body ring which is axially away from the stator shaft core, and the clamping portion is clamped and matched with the buffer member.

[0011] Furthermore, the nut also includes a first protrusion, which is connected to an end of the main ring axially away from the excitation assembly, and the clamping portion is arranged on at least one of the inner circumferential surface, outer circumferential surface, and end surface of the first protrusion away from the main ring.

[0012] Further, the first protrusion is annular and arranged around the stator shaft core, or there are at least two first protrusions and they are distributed at intervals around the stator shaft core.

[0013] In some embodiments, the clamping portion is an annular clamping groove, which is coaxial with the stator shaft core and extends around the axis of the stator shaft core; the buffer component is provided with an annular protrusion at one end axially close to the clamping portion, and the annular protrusion fits in the annular clamping groove.

[0014] In some embodiments, the stator assembly further includes: a first insulating plate, the first insulating plate is disposed around the stator shaft core and is located at one end of the excitation assembly where the limiting member is assembled, the limiting member abuts against the first insulating plate to clamp the first insulating plate and the excitation assembly.

[0015] Furthermore, the limit member also includes a main body ring and a second protrusion, the second protrusion is connected to one end of the main body ring axially close to the excitation assembly; the main body ring and the second protrusion are ring-shaped and arranged around the stator shaft core, the diameter of the outer circumferential surface of the second protrusion is larger than the diameter of the inscribed circle of the outer circumferential surface of the main body ring, and the second protrusion abuts the first insulating plate.

[0016] Further, in the axial direction of the stator shaft core, a side surface of the limiting member facing the stator shaft core is a first surface, a positioning groove is formed on the first surface, and at least a portion of the first insulating plate is disposed in the positioning groove.

[0017] Further, in the radial direction of the stator shaft core, the positioning groove passes through the outer circumferential surface of the limiting member, and the radial outer end of the first insulating plate exceeds the outer circumferential surface of the limiting member.

[0018] The linear motor according to the embodiment of the utility model comprises: a mover assembly; a stator assembly, wherein the stator assembly is the stator assembly described in the above embodiment, and the stator assembly and the mover assembly are electromagnetically coupled to drive the mover assembly to move.

[0019] According to the linear motor of the embodiment of the utility model, by adopting the stator assembly of the above embodiment, the limit member can be used to connect the buffer member while stopping and limiting the excitation assembly, so as to realize the multi-purpose use of the limit member. At the same time, the buffer member can protect the stator assembly. When the stator assembly and the mover assembly move relative to each other along the axis, the direct collision between the mover assembly and the stator assembly along the axial direction is reduced or avoided, thereby improving the service life of the stator assembly.

[0020] The suspension system according to the embodiment of the utility model comprises the linear motor of the above embodiment.

[0021] According to the suspension system of the embodiment of the utility model, by adopting the linear motor of the above embodiment, the limit member can be used to connect the buffer member while stopping the excitation assembly, so as to realize the multi-purpose use of the limit member. At the same time, the buffer member can protect the stator assembly, and when the stator assembly and the mover assembly move relative to each other along the axis, the direct collision between the mover assembly and the stator assembly along the axial direction is reduced or avoided, thereby improving the service life of the stator assembly.

[0022] A vehicle according to an embodiment of the utility model comprises the suspension system of the above embodiment.

[0023] According to the vehicle of the embodiment of the utility model, by adopting the suspension system of the above embodiment, the limit member can be used to connect the buffer member while stopping the excitation assembly, so as to realize the multi-purpose use of the limit member. At the same time, the buffer member can protect the stator assembly, and when the stator assembly and the mover assembly move relative to each other along the axis, the direct collision between the mover assembly and the stator assembly along the axial direction is reduced or avoided, thereby improving the service life of the stator assembly.

[0024] 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

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 is a structural schematic diagram of a stator assembly according to an embodiment of the utility model;

[0027] Figure 2 yes Figure 1 A schematic diagram of the partial structure of the stator assembly at the nut of the embodiment;

[0028] Figure 3 yes Figure 1 A schematic diagram of the partial structure of the stator assembly at the nut of the embodiment;

[0029] Figure 4 yes Figure 2 A schematic diagram of the enlarged structure shown in the middle A;

[0030] Figure 5 yes Figure 1 A schematic structural diagram of a nut of a stator assembly of an embodiment;

[0031] Figure 6 It is a structural schematic diagram of a linear motor according to an embodiment of the utility model.

[0032] Reference numerals:

[0033] Linear motor 1000,

[0034] Stator assembly 100,

[0035] The stopper 11, the clamping portion 110, the main body ring 111, the first protrusion 112, the second protrusion 113, the positioning groove 114, the first surface 115,

[0036] Stator shaft core 12,

[0037] Excitation component 13,

[0038] Buffer 14, annular protrusion 141,

[0039] The first insulating plate 15,

[0040] Mover assembly 200. DETAILED DESCRIPTION

[0041] 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0042] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] The stator assembly 100, the linear motor 1000, the suspension system and the vehicle according to the embodiments of the present invention are described below with reference to the accompanying drawings. In the accompanying drawings, the axis of the stator shaft core 12 is marked as L.

[0045] like Figure 1 , Figure 2 As shown, the stator assembly 100 according to the embodiment of the utility model comprises: a stator shaft core 12, an excitation assembly 13, a stopper 11 and a buffer 14. The excitation assembly 13 is sleeved on the stator shaft core 12, and the stopper 11 is fixedly connected to one end of the stator shaft core 12 to stop the excitation assembly 13. The buffer 14 is located at one end of the stator shaft core 12 and connected to the stopper 11.

[0046] Thus, the stopper 11 can position the excitation assembly 13 to limit the position of the excitation assembly 13 on the stator shaft core 12, and limit the axial movement of the excitation assembly 13 along the stator shaft core 12. At the same time, the stopper 11 can also serve as an intermediate connector to connect the buffer 14, so that the buffer 14 is connected to one end of the stator shaft core 12 along the axial direction through the stopper 11. When the stator shaft core 12 and other structures produce relative axial movement, the buffer 14 can play a role in buffering and vibration reduction, avoiding direct collision of the stator assembly 100 with other structures along the axial direction, so as to protect the stator shaft core 12 and other structures.

[0047] It is understandable that, in the assembly of the stator assembly 100, the excitation assembly 13 is firstly placed on the stator shaft core 12, and then the stopper 11 is fixedly connected to one end of the stator shaft core 12 and the stopper 11 is stopped against the excitation assembly 13, and finally the buffer 14 is connected to the stopper 11. In other words, during the installation of the stator shaft core 12, the assembly of the excitation assembly 13 on the stator shaft core 12 will not be blocked by the stopper 11, which can simplify the operational difficulty of assembling the stator assembly 100.

[0048] In the stator assembly 100 of the present application, the limit member 11 can be used to connect the buffer member 14 while stopping the excitation assembly 13, so that the limit member 11 can be used for multiple purposes and simplify the assembly difficulty. At the same time, the buffer member 14 can protect the stator assembly 100 and increase the service life of the stator assembly 100.

[0049] In some embodiments, Figure 2 , Figure 4 and Figure 5 As shown, the limiter 11 is a nut, one end of the stator shaft core 12 is provided with an external thread, and the nut includes: a main body ring 111, the main body ring 111 is annular, and an internal thread is provided on the inner circumference of the main body ring 111, and the internal thread of the main body ring 111 is matched with the external thread of the stator shaft core 12.

[0050] It can be understood that the main body ring 111 is set to be annular so that the annular interior of the main body ring 111 can accommodate other structures in the motor, that is, the nut can be sleeved on one end of the stator shaft core 12 through the main body ring 111, and when the main body ring 111 is sleeved on one end of the stator shaft core 12, the internal thread on the inner circumferential surface of the main body ring 111 cooperates with the external thread on the stator shaft core 12 for threaded connection, thereby ensuring that the connection between the nut and the stator shaft core 12 through the main body ring 111 is more stable and the installation is relatively simple.

[0051] In the present application, there is no limitation on the way in which the main body ring 111 is connected to the stator shaft core 12. For example, the main body ring 111 can also be connected to one end of the stator shaft core 12 by welding.

[0052] Furthermore, the nut further comprises: a clamping portion 110, which is arranged at one end of the main ring 111 axially away from the stator shaft core 12, and the clamping portion 110 is clamped and matched with the buffer member 14. Thus, the connection structure between the elastic member and the stopper 11 can be simplified, and the assembly difficulty can be reduced.

[0053] In some embodiments, Figure 2 , Figure 4 , Figure 5As shown, the nut also includes a first protrusion 112, which is connected to one end of the main ring 111 axially away from the excitation assembly 13, and the clamping portion 110 is provided on at least one of the inner circumference, outer circumference, and end surface of the first protrusion 112 away from the main ring 111.

[0054] Thus, the clamping portion 110 is arranged on the first protrusion 112, the internal thread is arranged on the main body ring 111, and the first protrusion 112 is connected to at least one end of the main body ring 111 in the axial direction. Thus, the internal thread on the inner circumference of the main body ring 111 and the clamping portion 110 on the first protrusion 112 are arranged at intervals in the axial direction. When the nut is used for sleeve connection and clamping at the same time, the mutual interference when the nut is connected to the stator shaft core 12 through the main body ring 111 and the clamping connection buffer 14 through the clamping portion 110 is reduced, and the threaded connection and clamping reliability and stability of the nut are ensured.

[0055] In the present application, the structure of the clamping portion 110 is not limited, and the clamping portion 110 can be configured in different shapes according to the location of the clamping portion 110 on the first protrusion 112. Figure 1 In the example, the clamping portion 110 is arranged on the inner circumference of the first protrusion 112, and the clamping portion 110 is arranged as an annular clamping groove formed on the inner circumference of the first protrusion 112. For another example, when the clamping portion 110 is arranged on the end surface away from the main body ring 111, the clamping portion 110 can be arranged as a clamping protrusion protruding away from the main body ring 111 in the axial direction.

[0056] Further, the first protrusion 112 is annular and arranged around the stator shaft core 12 , or there are at least two first protrusions 112 and they are spaced apart and distributed around the stator shaft core 12 .

[0057] Thus, in the direction around the internal thread axis, the clamping portion 110 disposed on the first protrusion 112 has at least two different positions. Thus, the clamping portion 110 can be clamped at different positions around the internal thread axis to ensure the reliability of the clamping connection of the nut through the clamping portion 110.

[0058] At the same time, the different clamping positions of the clamping portion 110 surround the internal thread axis at the same time, that is, the distances between the multiple clamping positions and the axis are the same, so that when the clamping connection is performed, the forces between the different clamping positions are kept uniform, ensuring the stability of the clamping connection. For example, in the example shown in the figure, the clamping portion 110 is clamped to the buffer 14, and the axis of the buffer 14 coincides with the axis of the nut.

[0059] Preferably, when there are multiple first protrusions 112 , the multiple first protrusions 112 are arranged at equal intervals around the axis of the internal thread.

[0060] In some embodiments, the clamping portion 110 is an annular clamping groove, which is coaxial with the stator shaft core 12 and extends around the axis of the stator shaft core 12. The buffer 14 has an annular protrusion 141 at one end axially close to the clamping portion 110, and the annular protrusion 141 fits in the annular clamping groove.

[0061] It can be understood that the buffer member 14 is an elastic member.

[0062] Thus, the buffer member 14 is engaged in the annular groove through an annular snap-fit, so as to realize the snap-fit ​​connection between the buffer member 14 and the limiting member 11 , and the installation method is relatively simple.

[0063] In some specific embodiments, Figure 4 , Figure 5 As shown, the inner surface of the annular groove and the end surface of the first protrusion 112 away from the main body ring 111 are connected by a circular arc transition.

[0064] It is understandable that when the annular groove is used for clamping, the annular protrusion 141 of the buffer member 14 enters the annular groove from the end surface of the first protrusion 112 away from the main body ring 111 .

[0065] Thus, the inner surface of the annular groove and the end surface of the first protrusion 112 away from the main ring 111 are connected by an arc transition, and when the annular protrusion 141 enters the annular groove, the arc contacts the annular protrusion 141, which can guide the movement of the buffer 14. In addition, the transition connection adopts an arc shape, which can reduce the friction between it and the annular protrusion 141, making it easier for the annular protrusion 141 to enter the annular groove.

[0066] In some specific embodiments, Figure 4 , Figure 5 As shown, the intersection line of the annular groove and the cross section of the axis passing through the internal thread is a semicircular arc line, and correspondingly, the cross section edge shape of the buffer 14 and the axis passing through the internal thread is a corresponding semicircular arc line. Therefore, when the annular groove is used to clamp the buffer 14, the annular protrusion 141 of the buffer 14 is located in the semicircular arc line, so that the annular groove in the shape of a semicircular arc line can limit the position of the clamping protrusion along the axis direction of the internal thread, thereby realizing the clamping fit between the clamping protrusion and the annular groove.

[0067] In some embodiments, Figure 2 , Figure 4 and Figure 5 As shown, the stator assembly 100 also includes: a first insulating plate 15, the first insulating plate 15 is outer sleeved around the stator shaft core 12, and is located at one end of the assembly nut limiter 11 of the excitation assembly 13, and the nut limiter 11 abuts against the first insulating plate 15 to clamp the first insulating plate 15 and the excitation assembly 13.

[0068] Thus, the first insulating plate 15 can isolate and insulate the stator shaft core 12 from the live parts on the other side of the first insulating plate 15, thereby improving the safety and reliability of the stator assembly 100. At the same time, the stopper 11 can limit and fix the stator shaft core 12 and the first insulating plate 15, simplify the limit and fixation structure of the stator shaft core 12 and the first insulating plate 15, and effectively prevent the first insulating plate 15 from falling off from the stator assembly 100.

[0069] In addition, in this embodiment, the first insulating plate 15 and the stator shaft core 12 are limited and fixed by the limiting member 11, so that the total length of the stator assembly 100 composed of the stator shaft core 12, the excitation assembly 13, the first insulating plate 15 and the limiting member 11 remains unchanged, thereby not affecting the movable stroke of the linear motor 1000.

[0070] When assembling the stator assembly 100, the axial direction of the stator shaft core 12 is set to be the up and down direction, and the excitation assembly 13 is first mounted on the stator shaft core 12 from bottom to top, and then the first insulating plate 15 is mounted on the stator shaft core 12 from bottom to top, abutting the excitation assembly 13, and then the limit member 11 is mounted from bottom to top and fixedly connected to the stator shaft core 12, so that the limit member 11 abuts the first insulating plate 15, and finally, the buffer member 14 is clamped on the limit member 11.

[0071] In some embodiments, Figure 2-Figure 5 As shown, the stopper 11 further includes a main body ring 111 and a second protrusion 113, and the second protrusion 113 is connected to one end of the main body ring 111 in the axial direction close to the excitation assembly 13. The main body ring 111 and the second protrusion 113 are annular and arranged around the stator shaft core 12, and the diameter d2 of the outer circumference of the second protrusion 113 is greater than the diameter d1 of the inscribed circle of the outer circumference of the main body ring 111, and the second protrusion 113 abuts against the first insulating plate 15.

[0072] In some embodiments, Figure 4 As shown, in the axial direction of the stator shaft core 12 , the side surface of the limiting member 11 facing the stator shaft core 12 is a first surface 115 , and a positioning groove 114 is formed on the first surface 115 . At least a portion of the first insulating plate 15 is disposed in the positioning groove 114 .

[0073] Among them, the positioning groove 114 is formed by the first surface 115 being recessed toward the other side surface of the limiting member 11. In this way, not only can the first insulating plate 15 be positioned and the first insulating plate 15 be abutted between the bottom wall of the positioning groove 114 and the stator core, but the thickness of the limiting member 11 can also be maintained, thereby ensuring the structural strength of the limiting member 11.

[0074] In the present application, at least part of the first insulating plate 15 is located in the positioning groove 114, which may be: a part of the first insulating plate 15 is located in the positioning groove 114, and the rest is located outside the positioning groove 114; or: the first insulating plate 15 is completely located in the positioning groove 114. In this way, the area of ​​the part of the first insulating plate 15 located in the positioning groove 114 can be set according to the insulation requirements of the stator core and the stator winding and the area of ​​the first surface 115 of the stopper 11.

[0075] Furthermore, in the radial direction of the stator shaft core 12 , the positioning groove 114 passes through the outer circumferential surface of the limiting member 11 , and the radial outer end of the first insulating plate 15 exceeds the outer circumferential surface of the limiting member 11 .

[0076] That is to say, in the radial direction of the stator shaft core 12, the radial inner end of the first insulating plate 15 is accommodated in the positioning groove 114, and the radial outer end of the first insulating plate 15 is located radially outside the positioning groove 114, that is, the inner diameter of the first insulating plate 15 is smaller than the outer diameter of the stopper 11, and the outer diameter of the first insulating plate 15 is larger than the outer diameter of the stopper 11. Therefore, not only can the first insulating plate 15 be abutted in different directions by the multiple inner walls of the positioning groove 114 of the stopper 11, but the first insulating plate 15 can also be conveniently extended outward to the radial outer end of the stator core, thereby ensuring the insulation effect on the stator core and the stator winding.

[0077] exist Figure 4 , Figure 5 In the specific example, the first surface 115 is recessed to form a positioning groove 114, and the positioning groove 114 passes through the outer peripheral surface of the limit member 11. At this time, the area surrounded by the positioning groove 114 is in the shape of an annular column. While abutting against the first insulating plate 15 through the positioning groove 114, the limit member 11 also abuts against the excitation component 13 through the annular column area.

[0078] like Figure 6 As shown, the linear motor 1000 according to the embodiment of the present invention comprises a moving assembly 200 and a stator assembly 100. The stator assembly 100 is the stator assembly 100 of the above embodiment, and the stator assembly 100 and the moving assembly 200 are electromagnetically coupled to drive the moving assembly 200 to move.

[0079] The linear motor 1000 of the present application adopts the stator assembly 100 of the above-mentioned embodiment. The limit member 11 can be used to connect the buffer member 14 while stopping the excitation assembly 13, so that the limit member 11 can be used for multiple purposes. At the same time, the buffer member 14 can protect the stator assembly 100. When the stator assembly 100 and the movable assembly 200 move relative to each other along the axis, the direct collision between the movable assembly 200 and the stator assembly 100 along the axial direction is reduced or avoided, thereby improving the service life of the stator assembly 100.

[0080] The suspension system according to the embodiment of the present utility model comprises the linear motor 1000 of the above embodiment.

[0081] The suspension system of the present application adopts the linear motor 1000 of the above-mentioned embodiment. The limit member 11 can be used to connect the buffer member 14 while stopping the excitation component 13, so that the limit member 11 can be used for multiple purposes. At the same time, the buffer member 14 can protect the stator assembly 100. When the stator assembly 100 and the movable assembly 200 move relative to each other along the axis, the direct collision between the movable assembly 200 and the stator assembly 100 along the axial direction is reduced or avoided, thereby improving the service life of the stator assembly 100.

[0082] A vehicle according to an embodiment of the utility model comprises the suspension system of the above embodiment.

[0083] The vehicle of the present application adopts the suspension system of the above-mentioned embodiment. The limit member 11 can be used to connect the buffer member 14 while stopping the excitation component 13, so that the limit member 11 can be used for multiple purposes. At the same time, the buffer member 14 can protect the stator assembly 100. When the stator assembly 100 and the movable assembly 200 move relative to each other along the axis, the direct collision between the movable assembly 200 and the stator assembly 100 along the axial direction is reduced or avoided, thereby improving the service life of the stator assembly 100.

[0084] The stator assembly 100 , the linear motor 1000 , the suspension system and other structures and operations of the vehicle according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail here.

[0085] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0086] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A stator assembly, characterized in that: include: Stator shaft core (12); An excitation component (13), wherein the excitation component (13) is disposed on the stator shaft core (12); A stopper (11), the stopper (11) being fixedly connected to one end of the stator shaft core (12) to stop the excitation component (13); A buffer member (14), the buffer member (14) being located at one end of the stator shaft core (12) and connected to the limiting member (11).

2. The stator assembly according to claim 1, characterized in that The limiting member (11) is a nut, one end of the stator shaft core (12) is provided with an external thread, and the nut comprises: The main body ring (111) is annular and has an internal thread on its inner circumferential surface. The internal thread of the main body ring (111) fits on the external thread of the stator shaft core (12).

3. The stator assembly according to claim 2, characterized in that: The nut also includes: A clamping portion (110) is provided at an end of the main body ring (111) that is axially away from the stator shaft core (12), and the clamping portion (110) is clamped and matched with the buffer component (14).

4. The stator assembly according to claim 3, characterized in that: The nut further comprises a first protrusion (112), the first protrusion (112) being connected to an end of the main body ring (111) which is axially away from the excitation assembly (13), and the clamping portion (110) being arranged on at least one of the inner circumferential surface, the outer circumferential surface and the end surface away from the main body ring (111) of the first protrusion (112).

5. The stator assembly according to claim 4, characterized in that: The first convex block (112) is annular and arranged around the stator shaft core (12), or the first convex blocks (112) are at least two and are spaced apart and distributed around the stator shaft core (12).

6. The stator assembly according to claim 3, characterized in that: The clamping portion (110) is an annular clamping groove, which is coaxial with the stator shaft core (12) and extends around the axis of the stator shaft core (12); The buffer member (14) is provided with an annular protrusion (141) at one end close to the clamping portion (110) in the axial direction, and the annular protrusion (141) is fitted in the annular clamping groove.

7. The stator assembly according to claim 1, characterized in that Also includes: A first insulating plate (15), the first insulating plate (15) is outer-circuited around the stator shaft core (12) and is located at one end of the excitation component (13) where the limiting member (11) is assembled, and the limiting member (11) abuts against the first insulating plate (15) to clamp the first insulating plate (15) and the excitation component (13).

8. The stator assembly according to claim 7, characterized in that The stopper (11) further comprises: a main body ring (111) and a second protrusion (113), wherein the second protrusion (113) is connected to an end of the main body ring (111) close to the excitation assembly (13) in the axial direction; The main body ring (111) and the second protrusion (113) are annularly arranged around the stator shaft core (12); the diameter of the outer peripheral surface of the second protrusion (113) is greater than the diameter of the inscribed circle of the outer peripheral surface of the main body ring (111); and the second protrusion (113) abuts against the first insulating plate (15).

9. The stator assembly according to claim 7, characterized in that: In the axial direction of the stator shaft core (12), a side surface of the limiting member (11) facing the stator shaft core (12) is a first surface (115), a positioning groove (114) is formed on the first surface (115), and at least a portion of the first insulating plate (15) is disposed in the positioning groove (114).

10. The stator assembly according to claim 9, characterized in that In the radial direction of the stator shaft core (12), the positioning groove (114) passes through the outer peripheral surface of the limiting member (11), and the radial outer end of the first insulating plate (15) exceeds the outer peripheral surface of the limiting member (11).

11. A linear motor, characterized in that: include: A mover assembly (200); A stator assembly (100), wherein the stator assembly (100) is a stator assembly (100) according to any one of claims 1 to 10, wherein the stator assembly (100) and the mover assembly (200) are electromagnetically coupled to drive the mover assembly (200) to move.

12. A suspension system, characterized in that: Comprising the linear motor (1000) according to claim 11.

13. A vehicle, characterized in that: Comprising a suspension system according to claim 12.

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