Brushless DC motor with built-in controller

Abstract

The invention discloses that the controller panel includes an annular Hall plate arranged in the first controller casing and a rectangular controller panel arranged in the second controller casing; The axial limit is at the outer end of the circular first insulating frame, and the first controller cover is fastened with the iron core and the end cover through multiple screws; hole and vertically extending first boss, the inner surface of the top plate of the second controller cover has a second boss corresponding to the position of the first boss and having a through hole and extending vertically, the first boss and the second The end face of the convex column has a step for fitting the rectangular controller panel, and there are notches on both sides of the rectangular controller panel to limit the radial position of the convex column. The two screws pass through the respective through holes and screw in the respective threaded holes. Press down on the rectangular controller panel. The radial area of ​​the controller panel and the motor is reduced, and the controller panel is fastened stably and reliably, and the controller has a good heat dissipation effect.

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 improvement of technology, brushless motors have been widely used in aircraft model, 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 wiring 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 the built-in controller has relatively low requirements on the space layout, and reduces some materials and components such as wire harnesses. Product production cost. The prior art brushless DC...

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

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