BLDC (brushless direct current) motor

Abstract

The invention discloses a BLDC (brushless direct current) motor. The BLDC motor comprises a motor body and a controller, wherein a rotating shaft extends out of the front end of the motor body, and the tail end of the motor body is connected with the controller; the motor body comprises a case, a front end cover, a back end cover, a stator assembly, a rotor assembly and a rotating shaft; the frontend cover and the back end cover are mounted at two ends of the case respectively; the stator assembly and the rotor assembly are mounted in a cavity of the case; a magnetic ring is mounted on the rotor assembly; the back end cover comprises a bottom plate, a bearing block bulging from the center of the bottom plate to the controller as well as an annular bulging edge arching on the outer edge ofthe bottom plate; an annular groove is formed between the annular bulging edge and the bearing block; a through hole is formed in the groove; a Hall fixing frame is mounted on the groove; a Hall circuit board is mounted on the Hall fixing frame; a Hall element on the Hall circuit board extends into the motor body via the through hole and is located beside the magnetic ring. The Hall circuit boardis convenient to mount, the back end cover and the Hall fixing frame are not easy to deform, and angle deviation of the Hall element is avoided.

Description

Technical field: [0001] The invention relates to a BLDC motor. Background technique: [0002] The current BLDC motor includes a motor body and a controller. The front end of the motor body extends out of the rotating shaft, and the tail end of the motor body is connected to the controller. Wherein, the motor body includes a casing, a front end cover, a rear end cover, and a stator. assembly, rotor assembly and the rotating shaft, the front end cover and rear end cover are respectively installed at both ends of the casing, the stator assembly and the rotor assembly are installed in the cavity of the casing, the The magnetic ring is installed on the rotor assembly, the stator end insulation of the stator assembly is installed with a Hall circuit board, and the Hall element on the Hall circuit board induces the magnetic flux of the magnetic ring. However, since the end insulation is made of plastic material, it is easy to deform, resulting in a large angle deviation of the Hal...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a motor Hall circuit board installation structure and the motor applied thereto, so as to solve the problems in the prior art that the installation of the Hall circuit board is inconvenient and the installation angle of the Hall element is easy to deviate

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