Brushless DC motor with built-in controller

Abstract

The invention discloses a controller panel which comprises an annular Hall plate arranged in a first controller housing and a rectangular controller panel arranged in a second controller housing. The annular Hall plate is radially clamped and axially limited at the outer end part of the first circular insulating framework; the first controller housing is fastened with the iron core and the end cover through a plurality of screw rods; the two sides of the top of the first controller housing are each provided with a first protruding column which is provided with a threaded hole and extends vertically, the inner surface of a top plate of the second controller housing is provided with second protruding columns which correspond to the first protruding columns in position, are provided with through holes and extend vertically, and the end faces of the first protruding columns and the end faces of the second protruding columns are each provided with a step embedded with a rectangular controller panel. The two sides of the rectangular controller panel are provided with notches which are limited with the protruding columns in the radial direction. Two screws penetrate through the corresponding through holes to be screwed into the corresponding threaded holes so as to press the rectangular controller panel. The radial area of the controller panel and the motor is reduced, the controller panel is stable and reliable in fastening, and the heat dissipation effect of the controller is good.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a brushless DC motor with a built-in controller. Background technique [0002] Brushless DC motors are simply referred to as brushless motors. In recent years, with the increasing maturity and perfection of technology, brushless motors have been widely used in aircraft models, medical equipment, household appliances, office automation and other fields. [0003] The controllers of the early brushless DC motors were all external, which took up a lot of space, and the cost of materials such as wire harnesses was relatively high. In recent years, the built-in controller of the brushless DC motor has been gradually promoted. Compared with the external controller, the built-in controller or called the built-in controller has relatively low requirements for space layout, which reduces some materials and components such as wiring harnesses, and relatively reduces the cost. Product produ...

AI Technical Summary

Problems solved by technology

[0004] However, the brushless DC motor with a built-in controller in the prior art still has the following disadvantages: the controller is a circular plate with a large diameter, which occupies a large area in the radial direction, resulting in a large radial area of ​​the motor, and takes up a large space for equipment after the motor is installed.

All control components are in one chamber, poor heat dissipation

The controller needs to be directly fastened by multiple screws, which is not stable enough and takes up a lot of working area of ​​the controller panel

In addition, the coils of brushless DC motors in the prior art are all bound with cable ties and then cured with glue to insulate and fix with the insulating frame. The binding and glue curing process is cumbersome, the production cycle of each motor is relatively long, and the labor cost is relatively High, the material cost of binding wire and glue is relatively high, the production efficiency is relatively low, the defective rate of the stator is relatively high, and it is difficult to automate assembly, that is, it is difficult to automate production

Images