CN205377472U - Brushless motor's outer wound -rotor type stator towards piece and stator core - Google Patents

Abstract

The utility model relates to a brushless motor's outer wound -rotor type stator towards piece and stator core belongs to motor manufacturing field, and the stator includes stator tooth towards stator yoke portion towards the piece in piece and the joint outside in stator tooth towards the piece towards the piece, and stator tooth constitutes annular by a plurality of tooth portions with setting up in the end terminal of the root both sides of tooth portion towards the piece, and tooth portion is radial setting to centre of a circle outside, stator yoke portion be equipped with towards the inner ring of piece on with stator tooth towards the corresponding tooth portion notch of the tooth portion on the piece. It constitutes stator core to fold a plurality of stators of the aforesaid to press towards the piece. The utility model discloses an outer wound -rotor type winds back reuse stator yoke portion to tooth portion and carries out joint with stator tooth towards the piece towards the piece, and winding speed is fast, and the coiling machine requires not highly, has effectively reduced manufacturing cost, has improved production efficiency.

Description

Outer-winding stator punching sheet and stator core of a brushless motor

technical field

The utility model relates to an outer winding stator punch and a stator iron core of a brushless motor, belonging to the field of motor processing and manufacturing.

Background technique

The static part of the motor is called the stator, and its components mainly include stator core, stator winding, machine base and other parts. The stator core is a part of the magnetic circuit of the motor, and the stator winding is placed on it. The stator core is formed by laminating several silicon steel sheets of the same shape.

The teeth of the traditional stator punch used with the inner rotor are all extended to the center of the circle. When winding on the stator teeth, an inner winding winding machine is generally used, and the winding machine is placed inside the stator core. The winding method has the problems of slow winding speed and difficult winding, and the inner winding machine used has high precision and high cost.

Utility model content

Based on the above-mentioned shortcomings, the utility model provides an outer-winding stator punch of a brushless motor, which can be operated in an external winding manner, has high winding efficiency and low cost.

In order to achieve the above object, the technical solution adopted in the utility model is:

An outer-winding stator punch of a brushless motor, comprising a stator tooth punch and a stator yoke punch clamped on the outside of the stator tooth punch, the stator tooth punch consists of several teeth and is arranged on the tooth The pole shoes on both sides of the root of the stator form a ring, and the teeth are arranged radially outward from the center of the circle; the inner ring of the stator yoke punch is provided with a tooth notch corresponding to the tooth on the stator tooth punch.

Further optimization on the basis of the above scheme:

Each tooth root of the stator tooth punch is provided with a notch opening to the center of the circle.

There are two notches and they are arranged at intervals.

The tooth tops of the stator tooth punching pieces are in the shape of a dovetail.

Buckle points are provided on the teeth of the stator tooth punching piece and on the stator yoke punching piece. The buckle point is composed of a rectangular buckle piece and a rectangular buckle hole. One side of the buckle piece is integrated with the body and slopes downward. The remaining three sides are disconnected.

There are two buckle points on the teeth of the punching piece of the stator tooth part and are arranged at intervals along the longitudinal direction of the teeth; there are several buckle points on the punching piece of the stator yoke part and are arranged at intervals.

The pole pieces between adjacent teeth of the stator tooth stamping are disconnected or connected to each other.

The notches of the teeth on the inner ring of the punching piece of the stator yoke are dovetail-shaped.

The utility model also provides a stator core based on the above-mentioned outer-winding stator punches of the brushless motor laminated. Riveted closure.

In the above scheme, the stator core is laminated with two kinds of stator tooth punches, the pole shoes are disconnected and the pole shoes are connected to each other, and the stator tooth punches with the pole shoes connected to each other are arranged at both ends of the stator core and middle part.

The stator iron core formed by laminating the stator punches provided by the utility model can use the outer winding type to wind the teeth, and then use the stator yoke punches and the stator teeth punches to clamp through the dovetail groove. The winding speed of this structure is fast, the requirements for the winding machine are not high, and the price of the outer winding machine is only one-fifth of that of the inner winding machine, which effectively reduces the production cost and improves the production efficiency.

The utility model will be further elaborated below by means of the accompanying drawings and specific embodiments.

Description of drawings:

Fig. 1 is a schematic structural diagram of the punching piece of the stator tooth portion with the pole shoe disconnected in the utility model;

Fig. 2 is a schematic structural diagram of the punching sheet of the stator teeth connected to the pole shoes of the utility model;

Fig. 3 is a schematic structural diagram of the punching sheet of the stator yoke of the present invention;

Fig. 4 is a schematic diagram of the structure after the stamping of the stator tooth and the stamping of the stator yoke are clamped.

Label description:

Tooth portion 11, pole shoe 12, notch 13, buckle point 14, tooth portion notch 21, buckle point 22.

detailed description:

As shown in Figures 1 to 4, the utility model provides an outer winding stator punch of a brushless motor, including a stator tooth punch and a stator yoke punch that is clamped on the outside of the stator tooth punch The stator tooth punching piece is composed of several teeth 11 and pole shoes 12 arranged on both sides of the root of the tooth portion 11 to form an annular stator tooth punching piece, and the tooth portion 11 is radially arranged outside the center of the circle; the inner part of the stator yoke punching piece The ring is provided with a tooth notch 21 corresponding to the tooth 11 on the stator tooth punch.

The root of each tooth 11 of the stator tooth punching piece in the above scheme is provided with two notches 13 opening to the center of the circle at intervals, which can reduce tooth harmonics and reduce the noise of the motor; the tooth portion 11 of the stator tooth punching piece The top of the stator yoke is dovetail-shaped, and the tooth notch 21 on the inner ring of the stator yoke punch is also dovetail-shaped. 21 out.

On the tooth portion 11 of the stator tooth punching piece, two buckle points 14 are arranged at intervals along the longitudinal direction of the tooth portion 11, and on the stator yoke punching piece, several buckle points 22, buckle point 14 and buckle point 22 are arranged at intervals along the annular stator yoke punching piece They are all composed of rectangular buckle and rectangular buttonhole. One side of the buckle is integrated with the body and slopes downward, and the other three sides are disconnected. The setting of buckle point 14 and buckle point 22 is for the purpose of riveting and fastening between adjacent punching pieces when stator tooth punching pieces and stator yoke punching pieces are stacked, so as to facilitate the positioning of punching pieces.

The pole shoes 12 between the adjacent tooth parts 11 of the stator tooth punching piece in the above scheme are divided into two types: connected and disconnected. The resistance is reduced, the magnetic field distribution of the magnetic poles is improved, and the excitation group is easily fixed; the stator tooth punches with adjacent pole pieces 12 disconnected from each other have the advantages of reducing tooth harmonics and reducing motor noise.

In the utility model, a plurality of stator punches in the above scheme are stacked to form a stator core, and the upper and lower adjacent stator tooth punches are riveted and fastened through the buckle point 14 on the tooth portion 11, so that the stator yoke is punched. The sheets are fastened by riveting through buckle points 22. The stator core in this embodiment is laminated using two kinds of stator tooth punches with the pole shoes 12 disconnected and connected with each other at the same time, wherein the stator tooth punches with the pole shoes 12 disconnected are mainly used, while the pole shoes 12 are connected to each other The stator tooth punching pieces are mainly arranged at the two ends and the middle of the stator core, and five pieces are arranged continuously at each part, and can also be arranged at intervals.

The above embodiments are only used to illustrate the technical solution of the utility model without limitation, other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the utility model, as long as they do not depart from the spirit and scope of the technical solution of the utility model, All should be included in the scope of claims of the present utility model.

Claims (10)

1. the outer Wound-rotor type stator punching of a brushless electric machine, it is characterized in that: include stator teeth punching and be connected in the stator yoke punching outside stator teeth punching, stator teeth punching is constituted annular by the pole shoe of some teeth portion He the root both sides being arranged at teeth portion, and teeth portion is arranged radially outside the center of circle；The internal ring of stator yoke punching is provided with the teeth portion notch corresponding with the teeth portion in stator teeth punching.

2. the outer Wound-rotor type stator punching of a kind of brushless electric machine according to claim 1, it is characterised in that: each teeth portion root of described stator teeth punching is provided with the notch to center of circle opening.

3. the outer Wound-rotor type stator punching of a kind of brushless electric machine according to claim 2, it is characterised in that: described notch is two and interval setting.

4. the outer Wound-rotor type stator punching of a kind of brushless electric machine according to claim 1, it is characterised in that: the teeth portion top of described stator teeth punching is dovetail-shape.

5. the outer Wound-rotor type stator punching of a kind of brushless electric machine according to claim 1, it is characterized in that: in the teeth portion of described stator teeth punching and in stator yoke punching, be equipped with button point, button point is made up of rectangle cramp and rectangle button hole, cramp while being connected and downward-sloping with place body, its excess-three limit disconnect.

6. the outer Wound-rotor type stator punching of a kind of brushless electric machine according to claim 5, it is characterised in that: the button point in described stator teeth punching teeth portion is two and arranges along teeth portion longitudinal separation；Button point in described stator yoke punching is some and interval is arranged.

7. the outer Wound-rotor type stator punching of a kind of brushless electric machine according to claim 1, it is characterised in that: the pole shoe between the adjacent fingers of described stator teeth punching disconnects or is connected to each other.

8. the outer Wound-rotor type stator punching of a kind of brushless electric machine according to claim 1, it is characterised in that: the teeth portion notch on the internal ring of described stator yoke punching is swallow-tail form.

9. the outer Wound-rotor type stator core of a brushless electric machine, it is characterised in that: described stator core is overrided to form by any stator punching of some claim 1 to 8.

10. the outer Wound-rotor type stator core of a kind of brushless electric machine according to claim 9, it is characterized in that: described stator core uses pole shoe to disconnect and two kinds of stator teeth punchings being connected with each other of pole shoe laminate simultaneously, and the stator teeth punching that is connected with each other of pole shoe is laid in two ends and the middle part of stator core.