CN107800218A - Stator winding insulation structure - Google Patents

Abstract

The invention relates to a stator winding insulation structure, which is arranged on a motor stator consisting of a plurality of stator teeth. The first frame body and the second frame body of the stator winding insulation structure respectively extend from the first insulation frame body and the second insulation frame body, at least one of the plurality of step structures of the first frame body extends to the second turning edge far away from the tooth body from the first turning edge adjacent to the tooth body, and the distance between the first turning edge and the central shaft is smaller than the distance between the second turning edge and the central shaft. At least one of the plurality of step structures of the second frame body extends from a third turning edge adjacent to the stator teeth to a fourth turning edge far away from the stator teeth, and the distance between the third turning edge and the central shaft is smaller than the distance between the fourth turning edge and the central shaft. The connecting frame body is connected with the first and second insulating frame bodies, the first and second frame bodies.

Description

Stator winding insulation structure

technical field

The present invention relates to a stator winding insulation structure, in particular to a stator winding insulation structure arranged on a motor stator and including a stepped structure.

Background technique

For a long time, induction motors such as motors have been the mainstream of rotating motors. They have been favored by people for a long time because of their practicality and durability. Motors are inseparable. A motor is a device that can effectively convert electrical energy into mechanical energy. In recent centuries, the motor industry has developed rapidly. Everything from generators in power plants to vibration motors in mobile phones are products of the motor industry. The principle that the motor can convert electrical energy into mechanical energy is based on Ampere's law in Maxwell's equations. The coil that introduces current will generate a corresponding magnetic field according to Ampere's law to form an electromagnet, and the electromagnet will rotate continuously in a fixed magnetic field. To convert electrical energy into kinetic energy.

As far as the structure is concerned, the winding inside the motor plays a crucial role. In order to effectively increase the power, a coil with a very large number of turns will be set. However, since a motor is usually equipped with multiple teeth, the coil Wound on each tooth, so the coils need to maintain electrical insulation so that there will be no short circuit phenomenon, and the number of turns of the coil is relatively limited to avoid short circuit of the coil and cause power reduction, even due to motor failure. The wires caught fire.

Please refer to FIG. 1 and FIG. 1A , FIG. 1 is a schematic cross-sectional view showing a motor stator in the prior art, and FIG. 1A is a partially enlarged view showing FIG. 1 . As shown in the figure, a motor stator PA100 includes a plurality of stator teeth PA1 (only one is marked in the figure), a plurality of insulating structures PA2 such as insulating slot paper (only one is marked in the figure), and a plurality of winding wires PA3 (only one is marked in the figure). mark one). Wherein, each stator tooth PA1 has a tooth body PA11 and a tooth shoe PA12, and the stator teeth PA1 are connected to each other so that a winding space PA200 is formed between the tooth body PA11 and the tooth shoe PA12. While splicing a plurality of stator teeth PA1, the insulation structure PA2 between two adjacent tooth bodies PA11 and tooth shoes PA12 is used to prevent the winding PA3 from directly contacting the tooth bodies PA11 and tooth shoes PA12.

Among them, it can be seen from Fig. 1 that in the existing insulating structure PA2, the angle B between the tooth shoe PA12 and the tooth body PA11 is limited to not being 90 degrees, so that the winding PA3 is wound between the tooth shoe PA12 and the tooth body. When the PA11 is on, it is easy to cause sliding along the sliding directions L1 and L2, which makes it difficult to arrange the cables.

Please refer to FIG. 2 . FIG. 2 is a schematic cross-sectional view of another motor stator in the prior art. As shown in the figure, in order to solve the above-mentioned problems, the prior art proposes to design the insulating structure PA2a as an included angle structure of 90 degrees at the connecting part of the tooth shoe PA12a of the stator tooth PA1a and the tooth body PA11a, but this structure will cause The reduction of the winding PA3a reduces the power density of the motor during operation. Therefore, there is still room for improvement in the prior art.

Contents of the invention

In view of the existing insulation structure, the reduction of the amount of winding wires generally causes the problem of lower power density. Therefore, the present invention mainly provides a stator winding insulation structure, which mainly has a stepped structure to increase the amount of winding to solve the problems in the prior art.

Based on the above purpose, the main technical means adopted by the present invention is to provide a stator winding insulation structure, which is arranged on a motor stator. The motor stator has a central axis and is composed of a plurality of stator teeth. Each stator tooth includes a tooth body And a tooth shoe, the tooth body has a first body side and a second body side, the tooth shoe extends from the tooth body, and has a first tooth shoe side and a second tooth shoe side.

The stator winding insulation structure includes a first insulating frame body, a second insulating frame body, a first frame body, a second frame body and a connecting frame body. The first insulating frame body is attached to the first body side, and the second insulating frame body is attached to the second body side. The first frame body extends from the first insulating frame body and fits on the first tooth shoe side of the tooth shoe. The first frame body includes a plurality of first stepped structures, at least one of which is from the A first turning edge adjacent to the tooth body extends to a second turning edge away from the tooth body, a first distance between the first turning edge and the central axis is smaller than a first distance between the second turning edge and the central axis Two distances. The second frame body extends from the second insulating frame body, and is connected to the first frame body, and attached to the side of the second tooth shoe. The second frame body includes a plurality of second ladder structures, and among the second ladder structures At least one of them extends from a third turning edge adjacent to the tooth body to a fourth turning edge far away from the tooth body, a third distance between the third turning edge and the central axis is smaller than the fourth turning edge and the central axis A fourth distance between. The connecting frame body is connected to the first insulating frame body and the second insulating frame body. Wherein, the first insulating frame body, the second insulating frame body, the first frame body, the second frame body and the connecting frame body are used for winding a plurality of winding wires.

On the basis of the above-mentioned necessary technical means, the above-mentioned stator winding insulation structure also includes the preferred subsidiary technical means described below. The distance between the first turning edge and the second turning edge is a first extending distance, and the distance between the third turning edge and the fourth turning edge is a second extending distance. Both the first extending distance and the second extending distance are greater than the radius of the winding wires. At least one of the first stepped structures extends horizontally from the first turned edge to a second turned edge, and at least one of the second stepped structures extends horizontally from the third turned edge to a fourth turned edge. In addition, at least one of the first stepped structures includes a first stepped structure furthest from the tooth body, and at least one of the second stepped structures includes a second stepped furthest from the tooth body of the other stator tooth. structure. In addition, the material of the first insulating frame body, the second insulating frame body, the first frame body and the second frame body is one of paper and plastic.

After adopting the main technical means of the stator winding insulation structure provided by the present invention, since the stepped structure can effectively increase the amount of winding, the power density can be effectively improved to solve the problems in the prior art.

The specific embodiments adopted by the present invention will be further described by the following embodiments and drawings.

Description of drawings

FIG. 1 is a schematic cross-sectional view showing a conventional motor stator.

FIG. 1A is a partially enlarged view showing FIG. 1 .

FIG. 2 is a schematic cross-sectional view showing another conventional motor stator.

FIG. 3 is a top view showing a stator winding insulation structure disposed on a motor stator according to a preferred embodiment of the present invention.

FIG. 4 is a schematic cross-sectional view showing a stator winding insulation structure disposed on a motor stator according to a preferred embodiment of the present invention.

Fig. 5 is a schematic diagram showing the structure of a tooth body.

FIG. 5A is a partial enlarged view showing the first ladder structure and the second ladder structure in FIG. 4 .

FIG. 6 is a schematic cross-sectional view showing a stator winding insulation structure disposed on a motor stator and winding a winding wire according to a preferred embodiment of the present invention.

Fig. 7 is a schematic diagram showing a tooth body wound with a wire.

FIG. 7A is a partially enlarged view showing the first ladder structure and the second ladder structure in FIG. 5 .

Among them, reference signs:

PA100 motor stator

PA200 winding space

PA1 stator teeth

PA11, PA11a tooth body

PA12, PA12a tooth shoe

PA2, PA2a insulation structure

PA3, PA3a winding

1 Stator winding insulation structure

11 The first insulating frame body

12 The second insulating frame body

13 The first frame

131 The first ladder structure

1311 First turning edge

1312 Second turning edge

14 second frame body

141 second ladder structure

1411 Third turning edge

1412 Fourth turning edge

15 link frame

2 motor stator

21 stator teeth

211 tooth body

2111 First body side

2112 Second body side

212 Tooth Boots

2121 First tooth shoe side

2122 Second tooth shoe side

3 Winding

P central axis

R1 first distance

R2 second distance

R3 third distance

R4 fourth distance

T1 first extension distance

T2 second extension distance

r radius

L1, L2 sliding direction

Detailed ways

In the manufacturing method of the rotor structure provided by the present invention, there are too many combination implementations, so it is not repeated here, and only one preferred embodiment is listed for specific description.

Please refer to FIG. 3 to FIG. 7A together. FIG. 3 is a top view showing that the stator winding insulation structure of the preferred embodiment of the present invention is installed on the motor stator. FIG. 4 shows the stator winding insulation structure of the preferred embodiment of the present invention. A schematic cross-sectional view of the motor stator, FIG. 5 is a schematic diagram showing the structure of the tooth body, FIG. 5A is a partial enlarged view showing the first stepped structure and the second stepped structure in FIG. 4, and FIG. 6 shows a preferred embodiment of the present invention The stator winding insulation structure is set on the motor stator and the cross-sectional schematic diagram of the winding winding is shown. FIG. 7 shows the schematic diagram of the tooth body winding the winding. FIG. 7A is a partially enlarged view showing the first ladder structure and the second ladder structure in FIG. 5 .

As shown in the figure, the stator winding insulation structure 1 (marked in FIG. 4 ) provided by the preferred embodiment of the present invention is set on a motor stator 2, the motor stator 2 has a central axis P, and consists of a plurality of stator teeth 21 ( Only one is marked in the figure), each stator tooth 21 includes a tooth body 211 and a tooth shoe 212, the tooth body 211 has a first body side 2111 and a second body side 2112, the tooth shoe 212 extends from the tooth body 211 out, and has a first tooth shoe side 2121 and a second tooth shoe side 2122 .

The stator winding insulation structure 1 includes a first insulating frame body 11 , a second insulating frame body 12 , a first frame body 13 , a second frame body 14 and a connecting frame body 15 . The first insulating frame body 11 is attached to the first body side 2111 , and the second insulating frame body 12 is attached to the second body side 2112 .

The first frame body 13 extends from the first insulating frame body 11 and is attached to the first tooth shoe side 2121 of the tooth shoe 212. The first frame body 13 includes a plurality of first stepped structures 131 (three are shown in the figure). , only one is marked), at least one of the first stepped structures 131 starts from a first turning edge 1311 adjacent to the tooth body 211 (preferably adjacent to the first body side 2111 of the tooth body 211) to a first An extension distance T1 extends horizontally to a second turning edge 1312 away from the tooth body 211, and a first distance R1 between the first turning edge 1311 and the central axis P is smaller than that between the second turning edge 1312 and the central axis P. A second distance R2 (as shown in FIG. 5 and FIG. 7 ).

The second frame body 14 extends from the second insulating frame body 12, and is connected to the first frame body 13, and attached to the second tooth shoe side 2122. The second frame body 14 includes a plurality of second stepped structures 141 (Fig. Three are shown in the figure, and only one is marked), at least one of the second stepped structures 141 starts from a tooth body 211 adjacent to the stator tooth 21 (preferably adjacent to the second body side 2112 of the tooth body 211) The third turning edge 1411 extends horizontally with a second extension distance T2 to a fourth turning edge 1412 away from the tooth body 211 of the stator tooth 21, and a third distance R3 between the third turning edge 1411 and the central axis P It is smaller than a fourth distance R4 between the fourth turning edge 1412 and the central axis P (as shown in FIG. 5 and FIG. 7 ).

The connecting frame body 15 is connected to the first insulating frame body 11, the second insulating frame body 12, the first frame body 13 and the second frame body 14 (other embodiments may only connect the first insulating frame body 11 and the second insulating frame body 12), and preferably, the connecting frame body 15 is integrally connected to the first insulating frame body 11 , the second insulating frame body 12 , the first frame body 13 and the second frame body 14 . Among them, the first insulating frame body 11, the second insulating frame body 12, the first frame body 13, the second frame body 14 and the connecting frame body 15 are used for winding a plurality of winding wires 3 (only one is marked in the figure), and the winding wires The radius r of 3 is smaller than the first extending distance T1 and the second extending distance T2.

In addition, what needs to be mentioned here is that in a preferred embodiment of the present invention, the connecting frame 15 of the stator winding insulation structure 1 straddles the tooth body 211, that is to say, the stator winding insulation structure 1 is designed according to each stator Teeth 21 are designed.

In addition, although the first turning edge 1311 of the preferred embodiment of the present invention extends to the second turning edge 1312 in a horizontally extending manner, and the third turning edge 1411 extends to the fourth turning edge 1412 in a horizontally extending manner, other Embodiments can adopt different extension methods instead of only horizontal extension (such as non-linear extension), and at least one of the above-mentioned first stepped structures 131 includes the first stepped structure 131 farthest from the tooth body 211 (ie, FIG. The first stepped structure marked in ), at least one of the second stepped structures 141 includes the second stepped structure 141 of the tooth body 211 farthest from the stator tooth 21 (ie, the second stepped structure marked in the figure) .

It is worth mentioning that the first stepped structure 131 described in the preferred embodiment of the present invention is a stepped structure formed by the first turning edge 1311, the first extension distance T1 and the second turning edge 1312, and the second stepped structure 141 is a ladder structure formed by the third turning edge 1411 , the second extending distance T2 and the fourth turning edge 1412 , which is hereby described.

In summary, after adopting the stator winding insulation structure provided by the preferred embodiment of the present invention, since the stepped structure can effectively increase the amount of winding, the power density can be effectively improved to solve the problems in the prior art.

Through the above detailed description of the preferred embodiments, it is hoped that the features and spirit of the present invention can be described more clearly, and the scope of the present invention is not limited by the preferred embodiments disclosed above. On the contrary, the intention is to cover various changes and equivalent arrangements within the scope of the claimed patent scope of the present invention.

Claims (5)

1. A stator winding insulation structure, characterized in that it is arranged on a motor stator, the motor stator has a central axis, and is composed of a plurality of stator teeth, each stator tooth includes a tooth body and a tooth shoe, the The tooth body has a first body side and a second body side. The tooth shoe extends from the tooth body and has a first tooth shoe side and a second tooth shoe side. The stator winding insulation structure includes: a first insulating frame body attached to the side of the first body; a second insulating frame body attached to the side of the second body; a first frame body extending from the first insulating frame body and attached to the first tooth shoe side of the tooth shoe, the first frame body includes a plurality of first stepped structures, and the first stepped structures At least one of them extends from a first turning edge adjacent to the tooth body to a second turning edge far away from the tooth body, a first distance between the first turning edge and the central axis is smaller than the first turning edge a second distance between the two turning edges and the central axis; A second frame body extends from the second insulating frame body, is connected to the first frame body, and fits on the side of the second tooth shoe. The second frame body includes a plurality of second ladder structures. At least one of the second stepped structures extends from a third turning edge adjacent to the tooth body to a fourth turning edge far away from the tooth body, and a first turning edge between the third turning edge and the central axis three distances are less than a fourth distance between the fourth turning edge and the central axis; and a connecting frame body, connected to the first insulating frame body and the second insulating frame body; Wherein, the first insulating frame body, the second insulating frame body, the first frame body, the second frame body and the connecting frame body are used for winding a plurality of winding wires. 2 . The stator winding insulation structure according to claim 1 , wherein the distance between the first turning edge and the second turning edge is a first extension distance, and the distance between the third turning edge and the fourth turning edge is a distance. The second extension distance, the first extension distance and the second extension distance are both larger than the radii of the winding wires. 3. The stator winding insulation structure according to claim 1, wherein at least one of the first stepped structures extends horizontally from the first turned edge to the second turned edge, and the second stepped structures At least one of them extends horizontally from the third turning edge to the fourth turning edge. 4. The stator winding insulation structure according to claim 1, wherein at least one of the first stepped structures includes the first stepped structure farthest from the tooth body, and the second stepped structures At least one comprises a second stepped structure of the tooth body furthest from said other stator tooth. 5. The stator winding insulation structure according to claim 1, wherein the first insulating frame body, the second insulating frame body, the first frame body and the second frame body are made of paper and One of the plastics.