CN219394520U - Motor stator - Google Patents

Abstract

The utility model discloses a motor stator, which comprises an iron core component, a plurality of windings arranged on the inner side of the iron core component, a plurality of wiring terminals arranged on the iron core component, and a plurality of wires connecting the windings with corresponding wiring terminals, wherein the wiring terminals comprise first connecting parts which penetrate through the radial outer peripheral surface of the iron core component to extend to the outer side of the iron core component, and one ends of the wires extend to the outer side of the iron core component and are connected with the first connecting parts of the corresponding wiring terminals. The first connecting part penetrates through the radial outer peripheral surface of the iron core assembly to extend to the outer side of the iron core assembly, the lead is connected with the first connecting part, namely, the connection part of the wiring terminal and the lead is positioned at the radial outer side of the iron core assembly, so that the height of the motor stator in the axial direction of the motor stator can be reduced, and meanwhile, the lead and the first connecting part are also convenient to fix.

Description

Motor stator

Technical Field

The utility model relates to the technical field of electromagnetic devices, in particular to a motor stator.

Background

Conventional electric machines typically include a stator that typically includes a core assembly and windings wound around the core assembly, and terminals are typically mounted on the core assembly for electrical connection to components such as PCBs and windings.

The existing connecting terminals are usually extended for a certain length along the axial direction of the motor, which results in a larger size of the motor in the axial direction, and meanwhile, the fixing operation such as welding and the like on the electric wires wound on the connecting terminals is inconvenient.

Disclosure of Invention

In view of the above, the present utility model aims to provide a motor stator to solve at least one of the above problems.

The application provides a motor stator, include the iron core subassembly, locate a plurality of windings of iron core subassembly inboard, install in a plurality of binding post of iron core subassembly, and connect the winding with corresponding a plurality of wires of binding post, binding post includes first connecting portion, first connecting portion pass the radial outer peripheral face of iron core subassembly is in order to stretch out to the outside of iron core subassembly, the one end of wire stretches out to the outside of iron core subassembly and is connected with corresponding binding post's first connecting portion.

In some embodiments, the first connection portion extends in a direction perpendicular to an axial direction of the core assembly.

In some embodiments, the connection terminal further includes a second connection portion extending in an axial direction of the core assembly, the second connection portion being connected perpendicularly to the first connection portion.

In some embodiments, the iron core component is provided with a mounting hole, the mounting hole comprises a first hole portion and a second hole portion which are communicated with each other, the first hole portion extends along a direction perpendicular to the axial direction of the iron core component, the second hole portion extends along the axial direction of the iron core component, the first connecting portion passes through the first hole portion and extends to the outer side of the iron core component, and the second connecting portion passes through the second hole portion and extends to the outer side of the iron core component.

In some embodiments, the connection terminal further includes a second connection portion spaced apart from the first connection portion and a third connection portion connected between the second connection portion and the first connection portion, the second connection portion extending in an axial direction of the core assembly and being perpendicular to the first connection portion.

In some embodiments, the iron core component is provided with a mounting hole, the mounting hole comprises a first hole portion, a second hole portion spaced from the first hole portion, and a third hole portion communicating the first hole portion and the second hole portion, the first hole portion extends along a direction perpendicular to the axial direction of the iron core component, the second hole portion extends along the axial direction of the iron core component, the first connecting portion passes through the first hole portion and extends to the outer side of the iron core component, the second connecting portion passes through the second hole portion and extends to the outer side of the iron core component, and the third connecting portion is accommodated in the third hole portion.

In some embodiments, the iron core assembly comprises an iron core and an insulating frame for insulating the iron core and the winding, the insulating frame comprises an end part positioned at one axial side of the iron core, a plurality of limit lugs are arranged on the outer surface of the end part, the wire passes through the limit lugs and then is connected with the first connecting part, and the limit lugs are abutted to a part of the wire.

In some embodiments, the iron core assembly comprises an iron core and an insulating frame, the iron core comprises an annular yoke portion and a plurality of tooth portions which are located on the inner side of the yoke portion and distributed along the circumferential direction of the yoke portion at intervals, the insulating frame comprises an annular frame body and a plurality of support columns which are located on the inner side of the frame body and distributed along the circumferential direction of the frame body at intervals, the yoke portion is sleeved on the outer side of the frame body, the tooth portions are inserted into the corresponding support columns, the connecting terminals are arranged on the frame body, and the windings are arranged on the support columns.

In some embodiments, the rack main body comprises a main body part and two end parts respectively connected to two axial ends of the main body part, the main body part and the two end parts enclose to form an annular groove, the yoke part is accommodated in the annular groove, and the connecting terminal is arranged at one of the end parts.

In some embodiments, the connection terminal further includes a second connection portion extending in an axial direction of the rack body and perpendicularly connected to the first connection portion, the end portion provided with the connection terminal is provided with a mounting hole, the mounting hole includes a first hole portion and a second hole portion communicating with each other, the first hole portion extends in a direction perpendicular to the axial direction of the rack body, the second hole portion extends in an axial direction of the rack body, the first connection portion passes through the first hole portion and extends to an outside of the end portion, and the second connection portion passes through the second hole portion and extends to an outside of the end portion; or alternatively

The connecting terminal further comprises a second connecting part and a third connecting part, wherein the second connecting part is spaced from the first connecting part, the third connecting part is connected between the second connecting part and the first connecting part, the second connecting part extends along the axial direction of the frame body and is perpendicular to the first connecting part, the end part provided with the connecting terminal is provided with a mounting hole, the mounting hole comprises a first hole part, a second hole part spaced from the first hole part, and a third hole part communicated with the first hole part and the second hole part, the first hole part extends along the direction perpendicular to the axial direction of the frame body, the second hole part extends along the axial direction of the frame body, the first connecting part penetrates through the first hole part and extends to the outer side of the end part, the second connecting part penetrates through the second hole part and extends to the outer side of the end part, and the third connecting part is contained in the third hole part.

The first connecting part penetrates through the radial outer peripheral surface of the iron core assembly to extend to the outer side of the iron core assembly, and the lead is connected with the first connecting part, namely, the connecting part of the connecting terminal and the lead is positioned at the radial outer side of the iron core assembly, so that the height of the motor stator in the axial direction of the motor stator can be reduced, and meanwhile, the lead and the first connecting part are convenient to fix.

Drawings

Fig. 1 is a schematic structural diagram of a motor according to an embodiment of the present utility model;

FIG. 2 is a schematic top view of the motor shown in FIG. 1;

FIG. 3 is an exploded view of the core assembly shown in FIG. 1;

FIG. 4 is a partially exploded view of the core assembly and terminal shown in FIG. 1;

fig. 5 is a partially exploded view of an iron core assembly and a connecting terminal according to another embodiment of the present utility model;

fig. 6 is a schematic structural diagram of a motor stator according to an embodiment of the present utility model;

fig. 7 is a schematic structural diagram of a motor stator according to another embodiment of the present utility model.

In the figure: 1. a motor; 100. a motor stator; 200. a motor rotor; 10. an iron core assembly; 12. a winding; 14. an iron core; 16. an insulating frame; 18. a yoke; 20. a tooth portion; 22. a rack main body; 24. a support column; 26. a first stop portion; 28. a second stop portion; 30. a groove; 32. a main body portion; 34. an end portion; 36. an annular groove; 38. a connection terminal; 40. a wire; 42. a first connection portion; 44. a second connecting portion; 48. a first hole portion; 50. a second hole portion; 52. a third connecting portion; 54. and a limit bump.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.

It should be noted that, in the embodiments of the present utility model, all directional indicators (such as up, down, left, right, front, back, inner, outer, top, bottom … …) are merely used to explain the relative positional relationship between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators correspondingly change.

It will also be understood that when an element is referred to as being "fixed" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Referring to fig. 1 and 2, an electric motor 1 according to an embodiment of the present utility model includes a motor stator 100 and a motor rotor 200, wherein the motor rotor 200 is spaced from the motor stator 100 and can rotate relative to the motor stator 100 under the action of a magnetic field generated by the motor stator 100.

The position of the motor rotor 200 with respect to the motor stator 100 is not limited, and may be located inside the motor stator 100 or outside the motor stator 100. In the present embodiment, the motor rotor 200 is located inside the motor stator 100, i.e. the motor 1 is an inner rotor motor 1.

It will be appreciated that the motor 1 may be a motor or may be a generator 1, in this embodiment the motor 1 is a motor.

The motor stator 100 comprises a core assembly 10 and a plurality of windings 12 arranged on the inner side of the core assembly 10, wherein the windings 12 are distributed at intervals along the circumferential direction of the core assembly 10, and the motor rotor 200 is mutually spaced from the core assembly 10 and the windings 12. When current is applied to the windings 12, a magnetic field is generated, and the motor rotor 200 rotates relative to the core assembly 10 and the windings 12 under the action of the magnetic field.

Referring to fig. 3 and 4, the core assembly 10 includes a core 14 and an insulation frame 16 for insulating the core 14 and the winding 12, and the core 14 and the winding 12 are mounted on the insulation frame 16 and are spaced apart from each other by the insulation frame 16. The insulating frame 16 has an insulating effect, and the winding 12 is separated from the iron core 14 by the insulating frame 16, so that the iron core 14 can be prevented from being directly contacted with the winding 12, and the risk of short circuit is reduced.

The core 14 includes a yoke 18 having a ring shape and a plurality of teeth 20 located inside the yoke 18, the plurality of teeth 20 being arranged at intervals in the circumferential direction of the yoke 18. The insulating frame 16 includes a frame body 22 having a ring shape and a plurality of support columns 24 located inside the frame body 22, the plurality of support columns 24 being arranged at intervals along the circumferential direction of the frame body 22. The support columns 24 are hollow structures and penetrate through two opposite sides of the support columns 24 along the radial direction of the frame main body 22, and avoidance holes are correspondingly formed in the frame main body 22 and communicated with the inner space and the outside of the corresponding support columns 24. The yoke 18 is sleeved on the outer side of the frame main body 22, the tooth 20 passes through the corresponding avoiding hole and is inserted into the corresponding support column 24, and the winding 12 is arranged on the support column 24.

The specific number of the windings 12, the teeth 20 and the support columns 24 is not limited, in this embodiment, the number of the windings 12, the teeth 20 and the support columns 24 is six, and the teeth 20 are respectively in one-to-one correspondence, that is, each tooth 20 is inserted into a corresponding support column 24, and each support column 24 is provided with one winding 12.

It will be appreciated that the core 14 and the insulating frame 16 may be separately formed and then assembled together, or the core 14 may be formed first and then the insulating frame 16 may be formed by injection molding. In the present embodiment, the insulating frame 16 is divided into two independent frame bodies in the axial direction, so that the insulating frame 16 can be mounted on the iron core 14 in the axial direction, and the assembly is convenient.

The core 14 further includes a first stopper 26, the first stopper 26 being located at an end of the tooth 20 remote from the yoke 18 and extending in a circumferential direction of the yoke 18, the first stopper 26 being located at a side of the support post 24 remote from the frame body 22. The support column 24 is located between the first stop portion 26 and the frame main body 22, so that a stop can be formed on the first stop portion 26 in the radial direction, the tooth portion 20 can be prevented from withdrawing from the support column 24, and the stability of the iron core assembly 10 is enhanced.

The insulating frame 16 further includes a second stop 28, the second stop 28 being located at an end of the support post 24 remote from the frame body 22 and extending in a circumferential direction of the frame body 22, the winding 12 being located between the frame body 22 and the second stop 28, the second stop 28 being capable of radially stopping the winding 12 to prevent the winding 12 from falling off the support post 24.

The second stopping portion 28 is provided with a groove 30, the groove 30 is communicated with the inner space of the supporting column 24, the tooth portion 20 is accommodated in the inner space of the supporting column 24, the first stopping portion 26 is accommodated in the groove 30 on the second stopping portion 28, and the size of the iron core assembly 10 in the radial direction is reduced, so that more space is reserved in the radial direction for mounting the motor rotor 200.

The frame body 22 includes a main body 32 and two end portions 34 respectively connected to two axial ends of the main body 32, the main body 32 and the two end portions 34 enclose to form an annular groove 36, that is, the annular groove 36 is formed in the middle of the frame body 22, so that the frame body 22 is substantially in an i-shape, the yoke 18 is accommodated in the annular groove 36, and the two end portions 34 are respectively located at two axial sides of the yoke 18. The receiving of the yoke 18 in the annular groove 36 reduces the abrupt feel of the yoke 18, while the two ends 34 also provide a restraining effect on the yoke 18 in the axial direction. Specifically, the outer surface of the yoke 18 is flush with the outer surfaces of the two ends 34, further reducing the abrupt feel of the yoke 18.

Referring to fig. 1, in some embodiments, the motor stator 100 further includes a plurality of terminals 38 and a plurality of wires 40, the terminals 38 being mounted on the core assembly 10, the wires 40 connecting the windings 12 with the respective terminals 38. Specifically, the terminal 38 is mounted on one of the terminals of the frame body 22 so as to be spaced apart from the core 14 to reduce the risk of short circuits.

It will be appreciated that the wire 40 may be part of the winding 12, i.e. the end of the winding 12, or may be a separate conductive wire.

The connection terminals 38 include first connection portions 42 penetrating through a radial outer circumferential surface 43 of the core assembly 10 (i.e., an outer circumferential surface of the core assembly in a radial direction) to protrude to the outside of the core assembly, and one ends of the wires 40 protrude to the outside of the core assembly 10 and are connected to the first connection portions 42 of the corresponding connection terminals 38. Since the first connecting portion 42 passes through the radial outer circumferential surface 43 of the core assembly 10 and does not extend in the axial direction of the core assembly 10, the axial height of the motor stator 100 is reduced, and the axial height of the motor 1 is correspondingly reduced, so that the motor 1 can be suitable for environments with more requirements on axial dimensions, and since the connecting portion of the lead wire 40 and the connecting terminal 38 is located on the radial outer side of the core assembly 10, compared with the connecting portion of the lead wire 40 and the connecting terminal 38 located on one axial side of the core assembly 10, the fixing operation such as welding can be conveniently performed on the lead wire 40 and the connecting terminal 38.

Specifically, the first connection portion 42 extends in a direction perpendicular to the axial direction of the core assembly 10, i.e., the extending direction of the first connection portion 42 is perpendicular to the axial direction of the core assembly 10.

The specific number and specific positions of the connection terminals 38 are not limited, and may be flexibly arranged according to the actual application environment.

The fixing manner between the connection terminal 38 and the core assembly 10 is not limited, and may be fixing by glue or a connecting piece, or may be forming a limiting fixing effect on the connection terminal 38 by providing a limiting structure on the core assembly 10.

Referring to fig. 1 and 4, in an embodiment, the connection terminal 38 further includes a second connection portion 44 and a third connection portion 52, where the second connection portion 44 extends along an axial direction of the core assembly (i.e., an axial direction of the frame body) and is spaced apart from the first connection portion 42, the second connection portion 44 and the first connection portion 42 are perpendicular to each other, and the third connection portion 52 is connected between the second connection portion 44 and the first connection portion 42. Specifically, the third connecting portion 52 is perpendicular to the first connecting portion 42 and the second connecting portion 44, respectively. The connecting terminal 38 has a first connecting portion 42 extending perpendicularly to the axial direction and a second connecting portion 44 extending axially, wherein the first connecting portion 42 is connected to the conductor 40 and the second connecting portion 44 can be used for connecting to other components, such as a PCB, so that two parts of the connecting terminal 38 in different directions are connected to different components, respectively, in order to avoid interference with each other during the connection.

The core assembly 10 is provided with mounting holes, in particular, the mounting holes are provided in the end 34 provided with the terminal 38. The mounting hole includes a first hole portion 48, a second hole portion 50 spaced apart from the first hole portion 48, and a third hole portion (not shown) communicating the first hole portion 48 and the second hole portion 50, the first hole portion 48 extending in a direction perpendicular to the axial direction of the core assembly 10 (i.e., perpendicular to the axial direction of the frame body), and the second hole portion extending in the axial direction of the core assembly 10 (i.e., the axial direction of the frame body). The first connection portion 42 passes through the first hole portion 48 and extends to the outside of the core assembly 10 (i.e., end portion), the second connection portion 44 passes through the second hole portion 50 and extends to the outside of the core assembly 10 (i.e., end portion), and the third connection portion 52 is received in the third hole portion. By providing the mounting hole in the end 34 of the insulating frame 16 in a shape similar to the shape of the terminal 38, the terminal 38 can be restrained from falling off the insulating frame 16 by the terminal 38 being mounted to the mounting hole.

In this embodiment, the outer surface of the end 34 provided with the terminal 38 is provided with a plurality of limit lugs 54. The wires 40 are connected to the first connection portions 42 of the corresponding terminals 38 after passing through the limit bump 54, and the limit bump 54 abuts against a portion of the wires 40. By providing the end 34 with a stop tab 54 against the wire 40 to provide support for the wire 40, the deformability and risk of wobble of the wire 40 is reduced, thereby reducing the risk of the wire 40 becoming disconnected from the winding 12 and the terminal block 38.

The specific position of the stopper projection 54 is not limited, and may be disposed on one axial side of the end 34 or may be disposed radially outward of the end 34. In the present embodiment, the limit bump 54 is disposed on one axial side of the end 34 and extends in the axial direction, and the wire 40 abuts against one side of the limit bump 54 in the circumferential direction.

Referring to fig. 5, in another embodiment, the connection terminal 38 further includes a second connection portion 44 extending along the axial direction of the core assembly 10 (i.e. the axial direction of the frame body), and the second connection portion 44 is connected to the first connection portion 42 perpendicularly, i.e. the second connection portion 44 and the first connection portion 42 are directly connected and perpendicular to each other, so that they have a substantially L-shape. The first connection portion 42 is connected to a wire, and the second connection portion 44 may be used to connect to other components, such as a PCB board, so that two portions of the connection terminal 38 in different directions are connected to different components, respectively, to avoid interference during the connection process.

In this embodiment, the core assembly 10 is provided with mounting holes, specifically, the mounting holes are formed in the end 34 provided with the terminal 38. The mounting hole includes a first hole portion 48 and a second hole portion 50, the first hole portion 48 extending in a direction perpendicular to the axial direction of the core assembly 10 (i.e., a direction perpendicular to the axial direction of the holder main body), the second hole portion 50 extending in the axial direction of the core assembly 10 (i.e., the axial direction of the holder main body), the first hole portion 48 and the second hole portion 50 communicating with each other and forming a substantially L-shape. The first connection portion 42 passes through the first hole portion 48 and extends to the outside of the core assembly 10 (i.e., end portion), and the second connection portion 44 passes through the second hole portion 50 and extends to the outside of the core assembly 10 (i.e., end portion). By providing the mounting hole in the end 34 of the insulating frame 16 in a shape similar to the shape of the terminal 38, the terminal 38 can be restrained from falling off the insulating frame 16 by the terminal 38 being mounted to the mounting hole.

In the present embodiment, the limiting bump 54 is disposed on one axial side of the end 34 and extends in a radial direction, so that the limiting bump 54 partially protrudes outside the end. The limit bump 54 is circumferentially spaced from the first connection portion 42 of the corresponding connection terminal 38, one end of the wire is connected to the corresponding winding, and the other end extends toward and is connected to the corresponding connection terminal 38 after passing from the side of the limit bump 54 that is circumferentially away from the first connection portion 42.

It will be appreciated that the first connecting portion 42 extends in a direction perpendicular to the axial direction of the core assembly 10, i.e. the first connecting portion 42 is in a horizontal plane perpendicular to the axial direction, in which case the first connecting portion 42 may or may not extend in the radial direction of the core assembly 10.

Referring to fig. 6, in one embodiment, the motor is a three-phase motor, and the plurality of connection terminals includes a first terminal 55 for connection to a neutral wire and three second terminals 56 for connection to a phase wire, and each of the first terminal 55 and the second terminal 56 includes a first connection portion 42 and a second connection portion 44. The first connection portions 42 of the three second terminals 56 all extend in the radial direction of the core assembly 10 such that the first connection portions 42 of the three second terminals 56 are arranged radially. Specifically, the pitch between any adjacent two of the second terminals 56 is smaller than the pitch between the first terminal 55 and the adjacent second terminal 56.

Referring to fig. 7, in another embodiment, the motor is a three-phase motor, and the plurality of connection terminals includes a first terminal 55 for connection to a neutral wire and three second terminals 56 for connection to a phase wire, and the first terminal 55 and the second terminal 56 each include a first connection portion 42 and a second connection portion 44. The first connection portions 42 of the three second terminals 56 extend in a direction perpendicular to the axial direction of the core assembly 10, and the first connection portions 42 of the three second terminals 56 are spaced apart in parallel, at this time, one first connection portion 42 of the three second terminals 56 extends in the radial direction of the core assembly, and the other two second connection portions 42 do not extend in the radial direction of the core assembly 10, or none of the three first connection portions 42 of the three second terminals 56 extends in the radial direction of the core assembly 10. Specifically, the pitch between any adjacent two of the second terminals 56 is smaller than the pitch between the first terminal 55 and the adjacent second terminal 56.

The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.

Claims (10)

1. The utility model provides a motor stator, its characterized in that includes the iron core subassembly, locates a plurality of windings of iron core subassembly inboard, install in a plurality of binding post of iron core subassembly, and connect the winding with corresponding binding post's a plurality of wires, binding post includes first connecting portion, first connecting portion pass the radial outer peripheral face of iron core subassembly is in order to stretch out to the outside of iron core subassembly, the one end of wire stretches out to the outside of iron core subassembly and is connected with corresponding binding post's first connecting portion.

2. The motor stator of claim 1, wherein the first connection portion extends in a direction perpendicular to an axial direction of the core assembly.

3. The motor stator of claim 2, wherein the terminal further comprises a second connection portion extending in an axial direction of the core assembly, the second connection portion being connected perpendicularly to the first connection portion.

4. A motor stator as claimed in claim 3 wherein the core assembly is provided with a mounting aperture, the mounting aperture comprising first and second apertures in communication with each other, the first aperture extending in a direction perpendicular to the axial direction of the core assembly, the second aperture extending in the axial direction of the core assembly, the first connector passing through the first aperture and extending to the outside of the core assembly, and the second connector passing through the second aperture and extending to the outside of the core assembly.

5. The motor stator according to claim 2, wherein the connection terminal further includes a second connection portion spaced apart from the first connection portion and a third connection portion connected between the second connection portion and the first connection portion, the second connection portion extending in an axial direction of the core assembly and being perpendicular to the first connection portion.

6. The motor stator according to claim 5, wherein the core assembly is provided with a mounting hole, the mounting hole includes a first hole portion, a second hole portion spaced apart from the first hole portion, and a third hole portion communicating the first hole portion and the second hole portion, the first hole portion extends in a direction perpendicular to an axial direction of the core assembly, the second hole portion extends in the axial direction of the core assembly, the first connection portion passes through the first hole portion and extends to an outside of the core assembly, the second connection portion passes through the second hole portion and extends to an outside of the core assembly, and the third connection portion is received in the third hole portion.

7. The motor stator according to claim 1, wherein the core assembly includes a core and an insulating frame for insulating the core and the winding, the insulating frame includes an end portion located at one axial side of the core, a plurality of limit bumps are provided on an outer surface of the end portion, the wire is connected to the first connection portion after passing through the limit bumps, and the limit bumps are abutted against a portion of the wire.

8. The motor stator according to any one of claims 1 to 7, wherein the core assembly includes a core and an insulating frame, the core includes a yoke portion having a ring shape and a plurality of tooth portions located inside the yoke portion and arranged at intervals along a circumferential direction of the yoke portion, the insulating frame includes a frame body having a ring shape and a plurality of support columns located inside the frame body and arranged at intervals along a circumferential direction of the frame body, the yoke portion is sleeved outside the frame body, the tooth portions are inserted into the respective support columns, the connection terminals are provided to the frame body, and the windings are provided to the support columns.

9. The motor stator according to claim 8, wherein the frame body includes a main body portion and two end portions respectively connected to both axial ends of the main body portion, the main body portion and the two end portions enclose to form an annular groove, the yoke portion is received in the annular groove, and the connection terminal is provided at one of the end portions.

10. The motor stator according to claim 9, wherein the connection terminal further includes a second connection portion extending in an axial direction of the frame body and connected perpendicularly to the first connection portion, the end portion provided with the connection terminal is provided with a mounting hole including a first hole portion and a second hole portion communicating with each other, the first hole portion extending in a direction perpendicular to the axial direction of the frame body, the second hole portion extending in an axial direction of the frame body, the first connection portion passing through the first hole portion and extending to an outside of the end portion, the second connection portion passing through the second hole portion and extending to an outside of the end portion; or alternatively

The connecting terminal further comprises a second connecting part and a third connecting part, wherein the second connecting part is spaced from the first connecting part, the third connecting part is connected between the second connecting part and the first connecting part, the second connecting part extends along the axial direction of the frame body and is perpendicular to the first connecting part, the end part provided with the connecting terminal is provided with a mounting hole, the mounting hole comprises a first hole part, a second hole part spaced from the first hole part, and a third hole part communicated with the first hole part and the second hole part, the first hole part extends along the direction perpendicular to the axial direction of the frame body, the second hole part extends along the axial direction of the frame body, the first connecting part penetrates through the first hole part and extends to the outer side of the end part, the second connecting part penetrates through the second hole part and extends to the outer side of the end part, and the third connecting part is contained in the third hole part.