Stator iron core of brushless motor and brushless motor

Abstract

Provided in the invention is a stator iron core of a brushless motor. The stator iron core comprises an annular yoke portion and a plurality of teeth extending on the yoke portion towards an axis. A straight-edge positioning edge is arranged on the outer ring of the yoke portion; an arc edge is adjacent to the positioning edge on the yoke portion; and the angular range of a pole shoe is from 80 degrees to 89.5 degrees. Besides, the invention also provides a motor being composed of a stator iron core, a rotor passing through the center of the stator iron core, a first bracket for fixing end portions of the stator iron core and the rotor, a circuit board fixedly connected to the first bracket, a second bracket connected fixedly and cooperatively with the first bracket. The contours of the innermost sides of the inner walls of the first bracket and the second bracket are consistent with the external contour of the stator and outer straight edges and outer positioning edges are formed. Inaddition, the motor also includes an iron core bracket coating the stator iron core, a moving impeller fixedly connected with the rotor, and an annular fixed impeller coating the moving impeller; thefixed impeller is fixedly connected to the inside of a cover case fixedly connected with the second bracket; and a circuit board is fixedly connected to the first bracket. The stator iron core that can be installed and located conveniently has the good commutation performance within a limited size and a smaller size.

Description

technical field [0001] The invention relates to a stator iron core of a brushless motor and the brushless motor. Background technique [0002] At present, most of the small motors for household appliances in the market use brushless motors. The main research direction of this type of brushless motors is miniaturization and quietness. At present, they have formed a general design method and finalized products. However, due to the iron core, one of the core components There is still room for further design optimization. In addition, there is room for further improvement in the design of the shape of each component and the connection structure in the overall structure. It can be optimized, the stator size is too large, and the positioning of the stator is not very convenient. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a brushless motor stator core, which includes an annular yoke and a plurality of teeth e...

AI Technical Summary

Problems solved by technology

[0002] At present, brushless motors are mostly used in small motors for household appliances on the market. The main research direction of this type of brushless motors is miniaturization and quietness. At present, they have formed a general design method and finalized products. However, due to the iron core, one of the core components There is still room for further design optimization. In addition, there is room for further improvement in the design of the shape of each component and the connection structure in the overall structure. For example, most of the small brushless motors on the market now have the following defects: the overall size is too large, and the commutation performance is still low. Can be optimized, the stator size is too large, and the positioning of the stator is not very convenient

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