WO2022110285A1

WO2022110285A1 - Motor armature and winding method therefor, and motor

Info

Publication number: WO2022110285A1
Application number: PCT/CN2020/134331
Authority: WO
Inventors: 许德涛; 张奇; 凌芳华
Original assignee: 瑞声声学科技(深圳)有限公司; 瑞声光电科技(常州)有限公司
Priority date: 2020-11-27
Filing date: 2020-12-07
Publication date: 2022-06-02
Also published as: CN112510881A; CN112510881B

Abstract

A motor armature and a winding method therefor, and a motor. The motor armature (100) comprises an iron core (10) having a first end face (110) and a second end face (111) opposite to each other, and a winding (20) comprising coils (201) and gap bridge wires (202); the iron core (10) comprises a yoke portion (101) and tooth portions (102) arranged around the yoke portion (101); the tooth portions (102) comprise at least two winding teeth (10201) for forming the coils (201) and a crossing tooth group arranged between two adjacent winding teeth (10201) and used for forming the gap bridge wire (202); the crossing tooth group at least comprises one crossing tooth (10202); the gap bridge wire (202) comprises at least one first wire crossing portion (2021) formed by a first crossing line segment (20211), a second crossing line segment (20212) and a third crossing line segment (20213) connected in sequence, wherein the second crossing line segment (20212) extends on a crossing tooth along the second end face (111), the first crossing line segment (20211) extends towards the first end face (110) obliquely from one end of the second crossing line segment (20212), and the third crossing line segment (20213) extends towards the first end face (110) obliquely from the other end of the second crossing line segment (20212). The motor armature has characteristics of tight tension of gap bridge wires, high winding reliability, and the gap bridge wires occupying a small end face area, etc.

Description

Motor armature and its winding method and motor

technical field

The present application relates to the technical field of motors, and in particular, to a motor armature and its winding method, and a motor.

Background technique

The electric machine includes a stator and a rotor, wherein both the stator and the rotor include a motor armature. Generally, the motor armature includes an iron core and a winding. The iron core usually includes a yoke with a hollow inner hole and a tooth portion circumferentially arranged along the outer surface or inner surface of the yoke portion. A coil and a bridge wire for connecting two adjacent coils. The bridge wire is placed on the end face of the yoke along the winding direction of the winding. In order to support and fix the bridge wire, the end face of the yoke is often protruded with terminal.

With the development of thinning and lightening of various electronic products, it is considered to omit the terminals on the end face of the yoke to reduce the height of the stator and rotor, but in this way, the bridge wire directly placed on the end face of the yoke becomes relatively loose and occupies The end face area brings a lot of inconvenience to the process positioning and support of the motor armature.

Therefore, it is necessary to provide a new technical solution to solve the technical problem that the above-mentioned motor armature has no terminals in the iron core yoke.

technical problem

One of the objectives of the present application is to provide a motor armature to solve the problems of loose bridge wires, occupying end face area, and unfavorable process positioning and support during winding of the existing terminalless iron core.

technical solutions

The technical solution provided by one of the purposes of this application is as follows:

A motor armature includes an iron core and a winding, the iron core includes a yoke and a tooth portion arranged around the yoke, the winding includes at least two coils and a bridge for connecting two adjacent coils a wire, the tooth portion includes at least two winding teeth for winding the wire to form the coil and a wire between two adjacent winding teeth for winding the bridge wire The spanning tooth group, each described spanning tooth group includes one or more than two spanning teeth;

The iron core has a first end face and a second end face that are oppositely arranged, the bridge wire includes at least one first jumper portion, and the first jumper portion includes a first jumper segment and a second jumper segment connected in sequence and a third spanning line segment, the second spanning line segment extending on one of the spanning teeth along the second end face, the first spanning line segment extending obliquely from one end of the second spanning line segment toward the first end face , the third spanning line segment extends obliquely from the other end of the second spanning line segment toward the first end surface.

Preferably, the bridging line includes at least one of the first cross-line portion and a second cross-line portion, and the first cross-line segment extends obliquely from one end of the second cross-line segment toward the first end face to One of the coils, the third cross-wire segment extends obliquely from the other end of the second cross-wire segment toward the first end face to the second cross-wire portion, and the second cross-wire portion is along the first cross-wire portion. The end face is extended and connected between the third spanning wire segment and the other one of the coils.

Preferably, each of the coils has an incoming wire end and an outgoing wire end, and the incoming wire end and the outgoing wire end are both provided at one end of the coil close to the yoke;

The winding also includes a first lead wire and a second lead wire, the first lead wire is connected to the incoming wire end of the first coil of the winding, and the second lead wire is connected to the end of the last coil of the winding. The outgoing end, one end of the bridge wire is connected to the outgoing end of one of the coils, and the other end is connected to the incoming end of the adjacent coil.

Preferably, the yoke is an annular structure with a hollow inner hole, the yoke has an inner surface facing the hollow inner hole and an outer surface facing away from the inner surface, and the teeth are along the The circumferential direction of the yoke is protruded on the outer surface or the inner surface.

Preferably, the tooth portion includes a tooth body and a tooth head, the tooth body is extended from the inner surface of the yoke portion toward the center of the hollow inner hole, and the tooth head is disposed away from the tooth body. the end of the yoke;

Or, the tooth body extends from the outer surface of the yoke in a direction away from the hollow inner hole, and the tooth head is disposed at an end of the tooth body away from the yoke.

Preferably, each of the tooth heads has an end portion facing away from the tooth body, the end portion is a curved surface, the curved surfaces of all the tooth heads enclose a cylindrical surface, and the central axis of the cylindrical surface It is coincident with the central axis of the hollow inner hole.

Another object of the present application is to provide a motor including a rotor and a stator for driving the rotor to rotate, and at least one of the rotor and the stator adopts the above-mentioned motor armature.

The third purpose of the present application is to provide a method for winding a motor armature.

The winding method includes the following steps:

Step S01, providing the iron core;

Step S02, forming a coil on one of the winding teeth of the iron core;

Step S03, winding the bridge line on the spanning tooth group;

Step S04 , winding one of the coils on the adjacent winding teeth.

Further, it also includes forming a first lead wire at the incoming wire end of one of the coils and forming a second lead wire at the outgoing wire end of the other coil.

Further, the winding step of the bridge wire includes the following steps:

A first spanning line segment is formed obliquely extending from one of the coils toward the spanning tooth group;

The second spanning line segment is formed by extending from the first spanning line segment along the second end face on the spanning line tooth group;

The third spanning line segment is formed by extending obliquely from the second spanning line segment toward the spanning tooth group to the first end face; the first spanning line segment is composed of the first spanning line segment, the second spanning line segment and the third spanning line segment line;

The second jumper portion is formed by extending from the third jumper segment toward the adjacent one of the coils and connected with the coils.

beneficial effect

The beneficial effects of the present application are: compared with the prior art, in the motor armature and its winding method and motor provided by the present application, the iron core has oppositely arranged first and second end faces, and the teeth of the iron core are The winding tooth and the spanning tooth group, and the spanning tooth group is arranged between two adjacent winding teeth, the wire is wound on the winding tooth to form a coil, and the coils on the two adjacent winding teeth are connected by a bridge wire , wherein the bridge-crossing line includes at least a first spanning line portion, and the first spanning line portion includes a first spanning line segment, a second spanning line segment and a third spanning line segment connected in sequence, and the second spanning line segment extends therein along the second end face One spanning tooth, the first spanning line segment extends obliquely from one end of the second spanning line segment toward the first end face, and the third spanning line segment extends from the other end of the second spanning line segment toward the first end, such a structural design brings at least two First, the bridge wire is tightened and fixed by the cross teeth, and the bridge wire is no longer loose, which improves the reliability of the winding winding; second, the bridge wire is only partially set on the end face of the iron core, reducing The occupation of the end face area of the iron core by the bridge wire is reduced, thereby effectively releasing the end face area of the iron core, which is beneficial to provide process positioning, support, etc., and simplifies the tooling.

Description of drawings

1 is a schematic three-dimensional structure diagram of a motor armature provided by an embodiment of the present application;

Fig. 2 is a schematic cross-sectional view along line A-A of Fig. 1;

3 is a schematic diagram of a three-dimensional structure of an iron core provided by an embodiment of the present application;

4 is a schematic diagram of a three-dimensional structure of a winding provided in an embodiment of the present application;

FIG. 5 is a simplified schematic structural diagram of a motor provided by an embodiment of the present application;

FIG. 6 is a schematic flowchart of a method for winding a motor armature according to an embodiment of the present application.

Description of reference numbers:

100. Motor armature;

10, iron core; 101, yoke; 102, tooth; 1021, tooth body; 1022, tooth head; 10220, end; 110, first end face; 111, second end face; 112, inner surface; 113, outer Surface; 10201, winding teeth; 10202, spanning teeth;

20. Winding; 201, Coil; 2011, Incoming line end; 2012, Outgoing line end; Three span line segments; 2022, the second span line part; 203, the first lead; 204, the second lead;

200, hollow inner hole;

300, motor;

301, rotor; 302, stator.

Embodiments of the present application

The present application will be described in detail below with reference to FIGS. 1 to 4 .

As shown in FIG. 1 to FIG. 4 , an embodiment of the present application provides a motor armature 100 .

Referring to FIGS. 1 , 2 and 3 , the motor armature 100 includes an iron core 10 and a winding 20 , wherein the iron core 10 has a first end face 110 and a second end face 111 , and the first end face 110 and the second end face 111 are opposite to each other Arrangement, the iron core 10 includes a yoke portion 101 and a tooth portion 102, the tooth portion 102 surrounds the yoke portion 101 and is arranged on the yoke portion 101; the winding 20 includes at least two coils 201, a bridge wire 202, a first lead 203 and a first lead wire 203 Two lead wires 204, each coil 201 has an incoming wire end 2011 and an outgoing wire end 2012, the bridge wire 202 is used to connect two adjacent coils 201, the first lead wire 203 is connected to the first coil 201 of the winding 20, the second The lead 204 is connected to the last coil 201 of the winding 20 .

Specifically, the tooth portion 102 includes at least two winding teeth 10201 and a spanning tooth group formed by one or more spanning teeth 10202, wherein the winding teeth 10201 are used for the wire to be wound thereon to form a surrounding On the coil 201, each spanning tooth group is arranged between two adjacent winding teeth 10201, and the structure of the tooth portion 102 simultaneously satisfies the following three conditions: the winding teeth 10201 and the adjacent spanning tooth groups are arranged at intervals, Each of the sets of spanning teeth is spaced across the teeth 10202 . The bridge line 202 includes at least one first spanning line portion 2021, the first spanning line portion 2021 includes a first spanning line segment 20211, a second spanning line segment 20212 and a third spanning line segment 20213, and the first spanning line segment 20211, the second spanning line segment 20212 and the third spanning line segment 20213 are connected in sequence, wherein the second spanning line segment 20212 extends on a spanning tooth 10202 along the second end face 111 , and the first spanning line segment 20211 extends obliquely from one end of the second spanning line segment 20212 toward the first end face 110 , the third spanning line segment 20213 extends obliquely from the other end of the second spanning line segment 20212 toward the first end surface 110 .

In practical applications, the bridge wire 202 includes at least a first wire jumper 2021 and a second wire jumper 2022 , wherein the first wire jumper 20211 extends obliquely from one end of the second wire jumper 20212 toward the first end surface 110 to In one coil 201, the third cross-wire segment 20213 extends obliquely from the other end of the second cross-wire segment 20212 toward the first end surface 110 to the second cross-wire portion 2022, and the second cross-wire portion 2022 extends along the first end surface 110 and is connected to the third cross-wire portion. Between line segment 20213 and another coil 201 .

Referring to FIGS. 3 and 4 , the incoming wire end 2011 of each coil 201 is disposed at one end of the coil 201 close to the yoke 101 , and the outgoing end 2012 of each coil 201 is also disposed at the end of the coil 201 close to the yoke 101 . One end; the first lead 203 is connected to the incoming end 2011 of the first coil 201 of the winding 20 , and the second lead 204 is connected to the outgoing end 2012 of the last coil 201 of the winding 20 . In this embodiment, except that the incoming end 2011 of the first coil 201 of the winding 20 is connected to the first lead 203, the outgoing end 2012 of the last coil 201 is connected to the second lead 204, and the incoming ends of the other coils 201 in the winding 20 are connected Both the 2011 and the outlet end 2012 are arranged close to the yoke 101, so that the bridge wire 202 can be as close as possible to the edge of the yoke 101, so as to reduce the bridge wire 202 to the end face area of the iron core 10 (including the first end face 110 and the first end face The occupation of the two end faces 111).

Please refer to FIG. 3 , the yoke 101 is a ring-shaped structure with a hollow inner hole 200 , the yoke 101 has an inner surface 112 and an outer surface 113 , wherein the inner surface 112 faces the hollow inner hole 200 , and the outer surface 113 is connected to the inner surface 113 . Opposite to 112 , the teeth 102 are protruded on the outer surface 113 along the circumferential direction of the yoke 101 , or the teeth 102 are protruded on the inner surface 112 along the circumferential direction of the yoke 101 .

In practical applications, the tooth portion 102 includes a tooth body 1021 and a tooth head 1022 . The tooth body 1021 extends from the inner surface 112 of the yoke portion 101 toward the center of the hollow inner hole 200 , and the tooth head 1022 is disposed away from the yoke portion from the tooth body 1021 . Alternatively, the tooth body 1021 extends from the outer surface 113 of the yoke 101 in a direction away from the hollow inner hole 200 , and the tooth head 1022 is disposed at the end of the tooth body 1021 away from the yoke 101 .

Each tooth head 1022 has an end 10220 facing away from the tooth body 1021 , the end 10220 is a curved surface, the curved surfaces of all tooth heads 1022 enclose a cylindrical surface, and the central axis of the cylindrical surface and the central axis of the hollow inner hole 200 coincide.

Please refer to FIG. 1 to FIG. 4 and FIG. 5 . On the basis of providing the motor armature 100 described above, the embodiment of the present application further provides a motor 300 .

The motor 300 includes a rotor 301 and a stator 302. The stator 302 is used to drive the rotor 301 to rotate. The positional relationship and connection relationship between the stator 302 and the rotor 301 are the same as those of the motor 300 currently available on the market. 301 and the stator 302 both include a motor armature, and the motor armature of the rotor 301 is the motor armature 100 described above, or the motor armature of the rotor 301 is the motor armature 100 described above, or the motor armature of the rotor 301 and the stator 302. The armatures are the above-mentioned motor armatures 100 .

Referring to FIG. 6, on the basis of providing the motor armature 100 and the motor 300, the embodiment of the present application further provides the above-mentioned winding method of the motor armature 100, including the following steps:

Step S01, providing the iron core 10 of the motor armature 100;

Step S02, winding a coil 201 on one of the winding teeth 10201 of the iron core 10;

Step S03, winding a bridge wire 202 on the spanning tooth group;

Step S04 , winding a coil 201 on the adjacent winding teeth 10201 .

Wherein, in step S02 , the method further includes forming a first lead 203 at an incoming end 2011 of one coil 201 , and forming a second lead 204 at an outgoing end 2012 of the other coil 201 .

In step S03, the winding step of the bridge wire 202 includes the following steps:

A first spanning line segment 20211 is formed obliquely extending from one coil 201 toward the spanning tooth group;

A second spanning line segment 20212 is formed by extending from the first spanning line segment 20211 along the second end face 111 on the spanning line tooth group;

The third spanning line segment 20213 is formed by extending obliquely from the second spanning line segment 20212 toward the spanning tooth group to the first end face 110; the first spanning line segment 2021 is composed of the first spanning line segment 20211, the second spanning line segment 20212 and the third spanning line segment 20213;

A second cross-wire portion 2022 is formed by extending from the third cross-wire segment 20213 toward an adjacent coil 201 and connected with the coil 201 .

If the iron core 10 includes only two winding teeth 10201 and one spanning tooth group (including one or two spanning teeth 10202 ) disposed between the two winding teeth 10201 , the winding process of the motor armature 100 goes to step S04 can end. If the iron core 10 includes three or more winding teeth 10201, then repeat steps S02 to S04 until the last winding tooth 10201 along the winding direction of the winding 20 is wound. until the last coil 201.

The above are only the embodiments of the present application. It should be pointed out that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present application, but these belong to the scope of the present application. protected range.

Claims

A motor armature includes an iron core and a winding, the iron core includes a yoke and a tooth portion arranged around the yoke, the winding includes at least two coils and a bridge for connecting two adjacent coils The wire, characterized in that the tooth portion includes at least two winding teeth for winding the wire to form the coil and a wire disposed between two adjacent winding teeth for winding to form the coil. The spanning tooth groups of the bridge line, each of the spanning tooth groups including one or more than two spanning teeth;

The iron core has a first end face and a second end face that are oppositely arranged, the bridge wire includes at least one first jumper portion, and the first jumper portion includes a first jumper segment and a second jumper segment connected in sequence and a third spanning line segment, the second spanning line segment extending on one of the spanning teeth along the second end face, the first spanning line segment extending obliquely from one end of the second spanning line segment toward the first end face , the third spanning line segment extends obliquely from the other end of the second spanning line segment toward the first end surface.
The motor armature according to claim 1, wherein the bridge wire comprises at least one of the first jumper part and a second jumper part, and the first jumper segment extends from the second jumper One end of the line segment extends obliquely to one of the coils toward the first end surface, and the third spanning line segment extends obliquely from the other end of the second spanning line segment toward the first end surface to the second spanning line portion, The second wire jumper portion is extended and connected between the third wire jumper segment and the other coil along the first end surface.
The motor armature according to claim 1, wherein each of the coils has an incoming wire end and an outgoing wire end, and the incoming wire end and the outgoing wire end are both provided at the coil near the yoke one end;

The winding also includes a first lead wire and a second lead wire, the first lead wire is connected to the incoming wire end of the first coil of the winding, and the second lead wire is connected to the end of the last coil of the winding. The outgoing end, one end of the bridge wire is connected to the outgoing end of one of the coils, and the other end is connected to the incoming end of the adjacent coil.
The motor armature according to claim 1, wherein the yoke is an annular structure with a hollow inner hole, and the yoke has an inner surface facing the hollow inner hole and an inner surface facing away from the inner hole. On the outer surface of the surface, the tooth portion is protruded on the outer surface or the inner surface along the circumferential direction of the yoke portion.
The motor armature according to claim 4, wherein the tooth portion comprises a tooth body and a tooth head, and the tooth body extends from the inner surface of the yoke portion toward the center of the hollow inner hole, and the The tooth head is arranged at the end of the tooth body away from the yoke;

Or, the tooth body extends from the outer surface of the yoke in a direction away from the hollow inner hole, and the tooth head is disposed at an end of the tooth body away from the yoke.
The motor armature according to claim 5, wherein each of the tooth heads has an end portion facing away from the tooth body, the end portion is a curved surface, and the curved surfaces of all the tooth heads are enclosed to form A cylindrical surface, and the central axis of the cylindrical surface coincides with the central axis of the hollow inner hole.
The motor is characterized by comprising a rotor and a stator for driving the rotor to rotate, and at least one of the rotor and the stator adopts the motor armature according to any one of claims 1 to 6 .
The winding method of the motor armature according to any one of claims 1 to 6, wherein the method comprises the following steps:

Step S01, providing the iron core;

Step S02, forming a coil on one of the winding teeth of the iron core;

Step S03, winding the bridge line on the spanning tooth group;

Step S04 , winding one of the coils on the adjacent winding teeth.
The method for winding a motor armature according to claim 8, further comprising forming a first lead wire at the incoming end of one of the coils and forming a second lead at the outgoing end of the other coil.
The winding method of the motor armature according to claim 8, wherein the winding step of the bridge wire comprises the following steps:

A first spanning line segment is formed obliquely extending from one of the coils toward the spanning tooth group;

The second spanning line segment is formed by extending from the first spanning line segment along the second end face on the spanning line tooth group;

The third spanning line segment is formed by extending obliquely from the second spanning line segment toward the spanning tooth group to the first end face; the first spanning line segment is composed of the first spanning line segment, the second spanning line segment and the third spanning line segment line;

The second jumper portion is formed by extending from the third jumper segment toward the adjacent one of the coils and connected with the coils.