阅读说明：本技术 一种15°步距角步进电机 (15-degree step angle stepping motor ) 是由 蒋浣浣 彭光明 金万兵 于 2019-08-20 设计创作，主要内容包括：本发明涉及一种15°步距角步进电机,包括绕组、转子和定子,所述转子设有6对极,所述定子为分体式结构,其包括偶数个形状相同的定子块,每个所述定子块分布有至少两个定子齿,每个定子块中的相邻定子齿之间形成用于绕组绕制的定子轭部。与现有技术相比,本发明具有有利于实现电机的模块化绕线生产,提升电机的生产效率等优点。(The invention relates to a 15-degree step angle stepping motor which comprises a winding, a rotor and a stator, wherein the rotor is provided with 6 pairs of poles, the stator is of a split structure and comprises an even number of stator blocks with the same shape, at least two stator teeth are distributed on each stator block, and a stator yoke part for winding the winding is formed between the adjacent stator teeth in each stator block. Compared with the prior art, the motor winding device has the advantages of being beneficial to realizing the modularized winding production of the motor, improving the production efficiency of the motor and the like.)

1. The 15-degree step angle stepping motor comprises a winding, a rotor and a stator, wherein the rotor is provided with 6 pairs of poles, and the 15-degree step angle stepping motor is characterized in that the stator is of a split structure and comprises an even number of stator blocks with the same shape, at least two stator teeth are distributed on each stator block, and a stator yoke part for winding the winding is formed between every two adjacent stator teeth in each stator block.

2. A 15 ° step angle stepper motor as defined in claim 1, wherein the outer diameter of said stator yoke is smaller than the stator outer diameter.

3. The 15 ° step-angle stepping motor according to claim 1, wherein an included angle between adjacent stator pieces is 15 °, 45 ° or 75 °, the stator pieces have a structure in which one end is wide and the other end is narrow, and the stator teeth are provided at the narrow end.

4. A 15 ° step-by-step motor as claimed in claim 1, wherein there are four stator pieces, and there are two stator teeth on each stator piece, and the angle between the two stator teeth is 30 °.

5. The 15 ° step-by-step motor according to claim 4, wherein, in the counterclockwise direction, four stator pieces are stator piece 11, stator piece 12, stator piece 13, and stator piece 14 in this order, and the included angles between the stator pieces are 45 °, 75 °, 45 °, and wherein stator piece 11 and stator piece 13 belong to phase a, and stator piece 12 and stator piece 14 belong to phase B.

6. A 15 ° step-by-step motor as claimed in claim 5, wherein in a counterclockwise direction, said stator teeth of stator piece 11 are TA1 and TA2, said stator teeth of stator piece 13 are TA3 and TA4, said stator teeth of stator piece 12 are TB1 and TB2, said stator teeth of stator piece 14 are TB3 and TB 4;

stator yokes YA1, YA2, YB1 and YB2 are sequentially formed among the stator teeth TA1 and TA2, TA3 and TA4, TB1 and TB2, TB3 and TB4, the thicknesses of the stator yokes YA1, YA2, YB1 and YB2 are LA1, LA2, LB1 and LB2 respectively, wherein LA1 is LA2 is LB1 is LB 2;

during winding, the winding nozzle winds up and down around the stator yoke part from the notch, and the moving direction of the winding nozzle is the radius direction.

7. A 15 ° step-by-step motor according to claim 1, wherein there are two stator pieces, stator piece 21 and stator piece 22, wherein said stator piece 21 is phase a, said stator piece 22 is phase B, each stator piece has four stator teeth, and the angle between the two ends of the two stator pieces is 15 ° and 45 °.

8. A step motor according to claim 7 wherein, in the counterclockwise direction, the stator teeth of the A phase stator pieces 21 are TA1, TA2, TA3 and TA4 in this order, and the included angles between the four stator teeth are 60 °, 30 ° and 60 °.

9. A 15 ° step-by-step stepping motor according to claim 8, wherein the stator teeth of the B-phase stator pieces 22 are TB1, TB2, TB3 and TB4 in this order, and the included angles between the four stator teeth are 60 °, 30 ° and 60 ° in this order in the counterclockwise direction.

10. A 15 ° step-angle stepping motor according to claim 9, wherein stator teeth TA1 and TA2, TA3 and TA4, TA4 and TA4, TB4 and TB4 form stator yokes YA 4, YB 4, and their respective thicknesses are LA 4, LB 4, and LB 4, wherein LA 4 is LA 4 — LB 4, and 1.0 LA 4 is LB 4 — LB 4.

Technical Field

The invention relates to a stepping motor, in particular to a 15-degree stepping angle stepping motor.

Background

An existing 15-degree two-phase stepping motor is shown in fig. 1 and fig. 2, wherein 1A and 1B are stators of a first scheme and a second scheme respectively, 2 is a rotor of the existing scheme, and the rotor can be formed by lamination of punching sheets or a permanent magnet rotor, but N, S are alternated, and the total number of the poles is 6.

In the first prior art, the stator has 8 main poles, a phase main poles a1, a2, A3, a4 and B phase main poles B1, B2, B3 and B4, each of which has one stator tooth, and there are 8 stator teeth TA1, TA2, TA3, TA4, TB1, TB2, TB3 and TB 4. The 8 main poles are arranged in the anticlockwise direction and are arranged in the sequence of A1, B1, A2, B2, A3, B3, A4 and B4, and the included angles among the 8 main poles are all 45 degrees.

In the second conventional scheme, the stator has 8 main poles, a phase a main poles a1, a2, A3, a4 and a phase B main poles B1, B2, B3 and B4, each main pole has one stator tooth, and there are 8 stator teeth TA1, TA2, TA3, TA4, TB1, TB2, TB3 and TB 4. The 8 main poles are arranged in the anticlockwise direction and are A1, A2, B1, B2, A3, A4, B3 and B4, and included angles among the 8 main poles are respectively 30 degrees, 45 degrees, 30 degrees, 75 degrees, 30 degrees, 45 degrees, 30 degrees and 75 degrees.

In the existing scheme I and scheme II, the following defects exist:

when the outer diameter of the stator is less than 20mm, the notch of the motor is very small, and difficulty is caused in winding the motor; meanwhile, because the winding is wound on the main electrode of the motor, the space of the winding mouth for entering and exiting the slot can occupy the area in the slot, the slot fullness rate of the motor is influenced, and the output torque of the motor is further influenced.

Disclosure of Invention

The present invention is directed to overcoming the above-mentioned deficiencies of the prior art and providing a 15 step motor.

The purpose of the invention can be realized by the following technical scheme:

the 15-degree step angle stepping motor comprises a winding, a rotor and a stator, wherein the rotor is provided with 6 pairs of poles, the stator is of a split structure and comprises an even number of stator blocks with the same shape, at least two stator teeth are distributed on each stator block, and a stator yoke part for winding the winding is formed between the adjacent stator teeth in each stator block.

Preferably, the outer diameter of the stator yoke is smaller than the stator outer diameter.

Preferably, the included angle between adjacent stator blocks is 15 degrees, 45 degrees or 75 degrees, the stator blocks are of a structure with one wide end and the other narrow end, and the stator teeth are arranged at one narrow end.

Preferably, the number of the stator blocks is four, each stator block is provided with two stator teeth, and an included angle between the two stator teeth is 30 degrees.

Preferably, in the counterclockwise direction, the four stator blocks are the stator block 11, the stator block 12, the stator block 13 and the stator block 14 in sequence, and the included angles between the stator blocks are 45 °, 75 °, 45 ° and 75 ° in sequence, wherein the stator block 11 and the stator block 13 belong to phase a, and the stator block 12 and the stator block 14 belong to phase B.

Preferably, in the counterclockwise direction, the stator teeth on stator piece 11 are sequentially TA1 and TA2, the stator teeth on stator piece 13 are sequentially TA3 and TA4, the stator teeth on stator piece 12 are sequentially TB1 and TB2, and the stator teeth on stator piece 14 are sequentially TB3 and TB 4;

stator yokes YA1, YA2, YB1 and YB2 are sequentially formed among the stator teeth TA1 and TA2, TA3 and TA4, TB1 and TB2, TB3 and TB4, the thicknesses of the stator yokes YA1, YA2, YB1 and YB2 are LA1, LA2, LB1 and LB2 respectively, wherein LA1 is LA2 is LB1 is LB 2;

during winding, the winding nozzle winds up and down around the stator yoke part from the notch, and the moving direction of the winding nozzle is the radius direction.

Preferably, the number of the stator blocks is two, namely a stator block 21 and a stator block 22, wherein the stator block 21 is of phase a, the stator block 22 is of phase B, each stator block is provided with four stator teeth, and an included angle between two ends of the two stator blocks is 15 degrees and 45 degrees.

Preferably, in the counterclockwise direction, the stator teeth on the a-phase stator piece 21 are TA1, TA2, TA3 and TA4 in sequence, and the included angles between the four stator teeth are 60 °, 30 ° and 60 ° in sequence.

Preferably, in the counterclockwise direction, the stator teeth on the B-phase stator block 22 are TB1, TB2, TB3 and TB4 in sequence, and the included angles between the four stator teeth are 60 °, 30 ° and 60 ° in sequence.

Preferably, stator yokes YA1, YA2, YA3, YB1, YB2 and YB3 are formed between the stator teeth TA1 and TA2, TA3 and TA4, TA2 and TA3, TB1 and TB2, TB3 and TB4, TB2 and TB3, and have corresponding thicknesses LA1, LA2, LA3, LB1, LB2 and LB3, respectively, wherein LA1 ═ LA2 ═ LB1 ═ LB2, 1.0 ═ LA1< LA3 ═ LB3 ═ LB 1.

Compared with the prior art, the invention has the following advantages:

(1) the iron core segmentation and yoke part winding technology of the invention can greatly reduce the limitation of the motor notch size on the motor winding; meanwhile, the winding is at the yoke part of the motor, the in-out space of the winding line nozzle is in the radial direction, the area of the motor groove is not occupied, and the utilization rate of the groove area of the motor is improved.

(2) The iron core segmentation technology is beneficial to realizing the modularized winding production of the motor and improving the production efficiency of the motor.

Drawings

FIG. 1 is a schematic structural diagram of a first conventional scheme;

FIG. 2 is a schematic structural diagram of a second conventional solution;

FIG. 3 is a schematic structural view of embodiment 1;

fig. 4 is a schematic structural view of embodiment 2.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.

In order to reduce the difficulty of motor winding, improve the full rate of a motor slot and reduce the manufacturing difficulty of a small motor, the invention adopts the following measures:

the adoption is cut apart the iron core technique, reduces the restriction of motor notch size to the wire winding of motor greatly, and simultaneously, the winding coiling of motor is in motor yoke portion, and the wire winding mouth does not occupy motor groove area, has increased the full rate in groove of motor.

The invention relates to a 15-degree step angle stepping motor which comprises a winding, a rotor and a stator, wherein the rotor is provided with 6 pairs of poles, the stator is of a split structure and comprises an even number of stator blocks with the same shape, at least two stator teeth are distributed on each stator block, and a stator yoke part for winding the winding is formed between the adjacent stator teeth in each stator block.

Example 1

As shown in fig. 3, the integral stator is divided into four stator blocks 11, 12, 13 and 14, the four stators are the same, wherein the stator block 11 and 13 belong to phase a, the stator block 12 and 14 belong to phase B, each stator block is provided with two stator teeth, and the included angle between the two stator teeth is 30 °.

In the anticlockwise direction, the stator blocks are the stator block 11, the stator block 12, the stator block 13 and the stator block 14 in sequence, and included angles among the stator blocks are 45 degrees, 75 degrees, 45 degrees and 75 degrees in sequence.

Stator teeth on stator block 11 are sequentially TA1 and TA2, stator teeth on stator block 13 are sequentially TA3 and TA4, stator teeth on stator block 12 are sequentially TB1 and TB2, and stator teeth on stator block 14 are sequentially TB3 and TB 4.

Stator yokes YA1, YA2, YB1 and YB2 are defined between two stator teeth of each stator block, the outer diameter of the yoke is smaller than that of the stator, and the stator blocks are H-shaped with one wider end and the other narrower end.

In an embodiment, the stator yokes YA1, YA2, YB1, YB2 have thicknesses LA1, LA2, LB1, LB2, respectively, wherein LA 1-LA 2-LB 1-LB 2.

During the wire winding, the wire winding nozzle winds from the notch around the yoke part up and down, the moving direction of the line nozzle is the radius direction, the moving direction is different from the circumferential direction of the winding on the teeth, and the line nozzle does not occupy the space of the motor slot when being wound in the radius direction, so that the full rate of the motor slot is favorably improved. Meanwhile, the structure of the stator block greatly improves the winding efficiency of the motor.

Example 2

As shown in fig. 4, the integral stator is divided into two stator pieces 21 and 22, the two stator pieces are the same, wherein the stator piece 21 is a phase a, the stator piece 22 is a phase B, each stator piece is provided with 4 stator teeth, and an included angle between two ends of the two stator pieces is 15 degrees and 45 degrees.

In the counterclockwise direction, the stator teeth on the a-phase stator piece 21 are TA1, TA2, TA3 and TA4 in sequence, and the included angles between 4 stator teeth are 60 °, 30 ° and 60 ° in sequence.

In the counterclockwise direction, the stator teeth on the stator block 22 of the phase B are TB1, TB2, TB3 and TB4 in sequence, and the included angles between 4 stator teeth are 60 °, 30 ° and 60 ° in sequence.

Compared with embodiment 1, embodiment 2 adds new yokes YA3 and YB3, which means that a new winding space is added, as shown in fig. 4, which is beneficial to increase the output torque of the motor.

In example 2, the thicknesses of the stator yokes YA1, YA2, YA3, YB1, YB2 and YB3 are LA1, LA2, LA3, LB1, LB2 and LB3, respectively, where LA 1-LA 2-LB 1-LB 2, and 1.0-LA 1-LA 3-LB 3-3.0-LA 1.

While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.