CN211958874U

CN211958874U - Stator core with compact structure

Info

Publication number: CN211958874U
Application number: CN202020572642.XU
Authority: CN
Inventors: 邱传松; 张振建; 刘�东
Original assignee: Chongqing Cangxingda Technology Co ltd
Current assignee: Chongqing Cangxingda Technology Co ltd
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2020-11-17
Anticipated expiration: 2030-04-17

Abstract

The utility model discloses a compact structure's stator core, including the side yoke of two relative settings, two be connected with the end face yoke between the homonymy side of side yoke, be equipped with first stator tooth on the inner wall of end face yoke, be equipped with second stator tooth on the inner wall of side yoke, first stator tooth height is greater than the tooth height of second stator tooth, and first stator tooth is used for around establishing coil winding, the utility model discloses set up the stator tooth that two kinds of tooth heights are different inside the iron core to around establishing coil winding on the higher stator tooth of tooth height, then do not around establishing coil winding on the lower stator tooth of tooth height, can effectively save the installation space of two kinds of stator teeth like this, reduce stator core's volume, and then play the purpose that reduces whole motor volume, satisfy the demand of the small motor of some specific occasions.

Description

Stator core with compact structure

Technical Field

The utility model relates to the technical field of electric machines, concretely relates to compact structure's stator core.

Background

With the continuous development of society, people pay more and more attention to the quality of life, so that personal health care products and beauty health care products, such as electric toothbrushes, electric face cleaners, electric shavers and other related products are more and more popularized, and the products can not be driven by a reciprocating motion motor. These motors are typically small to fit in small spaces such as toothbrush handles. The traditional reciprocating motion motor is limited by the structural shapes of an inner stator and a rotor, the shape of the traditional reciprocating motion motor is generally circular, enough installation space needs to be reserved in the interior of a product, and the motor cannot meet the requirements of certain special products requiring more compact motor shapes, so that the structure of the inner stator or the rotor of the motor needs to be further improved.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a compact structure's that is fit for micro motor stator core.

The technical scheme is as follows: a compact structure's stator core, its key lies in: including two side yokes that set up relatively, two be connected with the end face yoke between the homonymy side of side yoke, be equipped with first stator tooth on the inner wall of end face yoke, be equipped with second stator tooth on the inner wall of side yoke, the tooth height of first stator tooth is greater than the tooth height of second stator tooth, first stator tooth is used for around establishing coil winding, all first stator tooth and second stator tooth are circumference form and distribute, and their inboard formation rotor installation space. By adopting the technical scheme, the first stator tooth with higher tooth height is wound with the coil winding which can generate a magnetic field, and the second stator tooth with lower tooth height is not wound with the coil winding or reduces the number of turns of the coil winding, so that the space interval between the side magnet yokes for mounting the second stator tooth can be effectively saved, the size of the stator core is reduced, the purpose of reducing the size of the whole motor is achieved, and the requirement of a small motor in certain specific occasions is met.

As further preferred:

the first stator tooth comprises a first long-strip-shaped tooth root and a first arc-shaped tooth top, wherein the first tooth top is fixedly mounted on the inner wall of the end-face magnetic yoke through the first tooth root, the center of a circular center line of the first tooth top coincides with the center line of the rotor mounting space, and the first tooth root is used for winding the coil winding. By adopting the structure, the coil winding is conveniently wound on the first tooth root part, and the space between the first tooth root part and the rotor can be reduced as much as possible after the rotor is installed on the first tooth top part, so that the volumes of the stator and the rotor are reduced, and further the volume of the whole motor is reduced.

The second stator teeth comprise circular arc-shaped second tooth tops which are fixedly arranged on the inner wall of the side magnetic yoke, and the centers of the circular center lines of the second tooth tops are superposed with the center line of the rotor mounting space. By adopting the structure, the distance between the second tooth top and the rotor can be reduced as much as possible because the second tooth top is arc-shaped, thereby being beneficial to reducing the volume of the whole motor.

The side magnetic yokes are planar, the end magnetic yokes are arc-shaped, and the circular center lines of the end magnetic yokes and the center lines of the two side magnetic yokes are overlapped with the center line of the rotor installation space. By adopting the structure, the first stator teeth with higher tooth height are arranged on the inner wall of the arc plate, and the part of the first stator teeth, which is higher than the second stator teeth, just occupies the bending space of the arc plate, so that the appearance structure is very compact, and the occupied space is smaller.

And the first tooth top part and the second tooth top part are respectively provided with a magnetic resistance groove, and the notch of each magnetic resistance groove faces to the rotor mounting space. By adopting the structure, if external force twists the rotor by a certain angle in a non-electrified state, the magnetic resistance slot can greatly reduce the magnetic field acting force between the magnetic block on the rotor and the stator teeth, so that the attraction between the magnetic block and the rotor teeth near the magnetic resistance slot is reduced, and the magnetic block can reach the position between the magnetic block and the adjacent two stator teeth under the balance of the acting force between the magnetic block and the adjacent two stator teeth, namely, the magnetic block is always kept at the initial position.

The inner wall of the end surface magnetic yoke is provided with the first stator tooth, the inner wall of the side surface magnetic yoke is provided with the second stator tooth, and the first stator tooth and the second stator tooth are alternately and uniformly distributed. By adopting the structure, the total number of the stator teeth is reasonably designed, and the two types of stator teeth are compactly and effectively distributed.

Compared with the prior art, the beneficial effects of the utility model are that: set up the stator tooth of two kinds of tooth height differences in the iron core to around establishing coil winding on the higher stator tooth of tooth height, then do not around establishing coil winding on the lower stator tooth of tooth height, can effectively save the installation space of two kinds of stator teeth like this, reduce stator core's volume, and then play the purpose that reduces whole motor volume, satisfy the demand of the small motor of some specific occasion.

Drawings

Fig. 1 is a schematic plan view of the present invention;

fig. 2 is a schematic view of the three-dimensional structure of the present invention when the coil winding is wound thereon.

Detailed Description

The present invention will be further described with reference to the following examples and accompanying drawings.

As shown in fig. 1, a compact stator core includes two side magnet yokes 1 that set up relatively, two be connected with end yoke 2 between the homonymy side of side magnet yoke 1, be equipped with first stator tooth 4 on the inner wall of end yoke 2, be equipped with second stator tooth 3 on the inner wall of side magnet yoke 1, the tooth height of first stator tooth 4 is greater than the tooth height of second stator tooth 3, first stator tooth 4 is used for around establishing coil winding, all second stator tooth 3 and first stator tooth 4 are the circumference form and distribute, and their inboard forms rotor installation space 5.

The inner wall of the end surface magnetic yoke 2 is provided with one first stator tooth 4, the inner wall of the side surface magnetic yoke 1 is provided with one second stator tooth 3, and the first stator tooth 4 and the second stator tooth 3 are alternately and uniformly distributed. The first stator tooth 4 comprises a first elongated tooth root 4b and a first arc-shaped tooth top 4a, wherein one side wall of the first tooth root 4b is fixedly connected with the inner wall of the end yoke 2, the first tooth top 4a is fixedly mounted on the other side wall of the first tooth root 4b, the centers of the circular center lines of all the first tooth tops 4a are coincided with the center line of the rotor mounting space 5, and the first tooth root 4b is used for winding the coil winding; the second stator teeth 3 include arc-shaped second tooth tops fixedly mounted on the inner wall of the side yoke 1, and centers of circle center lines of all the second tooth tops coincide with a center line of the rotor mounting space 5. In this embodiment, the center line of the first tooth top 804a and the center line of the second tooth top are both coincident with the rotation center line of the rotating shaft 5, and in some motor structures with non-uniform air gaps, the center line of each first tooth top 804a and the center line of each second tooth top may be uniformly distributed around the rotation center line of the rotating shaft 5.

The side magnet yokes 1 are planar, the end magnet yokes 2 are arc-shaped, and the circular center lines of the end magnet yokes 2 and the center lines of the two side magnet yokes 1 are overlapped with the center line of the rotor installation space 5.

Magnetic resistance grooves 7 are formed in the first tooth top portion 4a and the second tooth top portion respectively, notches of the magnetic resistance grooves 7 face the rotor installation space 5, and the magnetic resistance grooves 7 are arc-shaped.

As shown in fig. 2, when in use, the coil windings 6 are wound on the first tooth root portions 4b, and after the coil windings 6 are energized, the magnetic fields generated by the corresponding first tooth top portions 4a have the same polarity.

Certainly, as the utility model discloses a transform structure, side yoke 1 and end face yoke 2 also can be the flat board, and they make up into rectangular frame form like this, and the regular cube bodily form can be made to the casing that matches with it, and this kind of structure not only can reduce the motor volume equally, and still conveniently piles up the transportation.

Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and the scope of the present invention.

Claims

1. A compact stator core, its characterized in that: including two side yoke (1) that set up relatively, two be connected with end yoke (2) between the homonymy side of side yoke (1), be equipped with first stator tooth (4) on the inner wall of end yoke (2), be equipped with second stator tooth (3) on the inner wall of side yoke (1), the tooth height of first stator tooth (4) is greater than the tooth height of second stator tooth (3), first stator tooth (4) are used for around establishing coil winding, all first stator tooth (4) and second stator tooth (3) are the circumference form and distribute, and their inboard forms rotor installation space (5).

2. The stator core of claim 1, wherein: first stator tooth (4) are including long banding first tooth root portion (4b) and convex first tooth top portion (4a), and wherein first tooth top portion (4a) are passed through first tooth root portion (4b) fixed mounting be in on the inner wall of end face yoke (2), all the center of the round lead of first tooth top portion (4a) with the coincidence of the central line of rotor installation space (5), first tooth root portion (4b) are used for around establishing coil winding.

3. The stator core of claim 2, wherein: the second stator teeth (3) comprise circular arc-shaped second tooth tops which are fixedly arranged on the inner wall of the side magnetic yoke (1), and the centers of the circular center lines of the second tooth tops are superposed with the center line of the rotor mounting space (5).

4. The stator core of claim 1, 2 or 3, wherein: the side magnet yokes (1) are planar, the end magnet yokes (2) are arc-shaped, and the circle center line of the end magnet yokes (2) and the center lines of the two side magnet yokes (1) coincide with the center line of the rotor installation space (5).

5. The stator core of claim 3, wherein: and the first tooth top part (4a) and the second tooth top part are respectively provided with a magnetic resistance groove (7), and the notch groove of the magnetic resistance groove (7) faces the rotor mounting space (5).

6. The stator core of claim 4, wherein: the stator is characterized in that the inner wall of the end face magnetic yoke (2) is provided with one first stator tooth (4), the inner wall of the side face magnetic yoke (1) is provided with one second stator tooth (3), and the first stator tooth (4) and the second stator tooth (3) are alternately and uniformly distributed.