Novel controller for brushless DC motor

Abstract

The invention discloses a novel controller for a brushless DC motor. The novel controller comprises a controller upper cover, a controller lower cover, a PCB, an ejector pin and a lower waterproof layer, wherein the controller upper cover is matched with the controller lower cover and forms an accommodating hollow cavity; the top part of the controller upper cover is provided with a plurality of terminal installation holes; the PCB, the ejector pin and the lower waterproof layer are sequentially arranged in the accommodating hollow cavity from top to bottom; a lead-out wire terminal installation assembly is arranged at the top end of the PCB; a plurality of MOS tube installation assemblies are arranged at the left side and the right side of the top end of the PCB; a lead-out wire terminal in the lead-out wire terminal installation assembly is arranged in a terminal installation hole in a penetrating manner; the controller lower cover abuts on the bottom end of the ejector pin through the lower waterproof layer; and the top end of the ejector pin presses the MOS tube installation assemblies through the PCB. The novel controller for the brushless DC motor is simple in structure and has the advantages of being simple in manufacturing technology and low in manufacturing cost.

Description

technical field [0001] The invention relates to a controller, in particular to a novel controller for a brushless DC motor. Background technique [0002] At present, in the field of brushless DC motor controllers, the MOS tube is mainly installed by means of installation and pressing, specifically: use screws to lock the insulating particles on the aluminum strip or the shell, and then press the MOS tube on the On the aluminum bar or shell; in the brushless DC motor controller, the number of MOS tubes to be installed is large, and the number of screws and insulating particles required is correspondingly increased, which not only increases the manufacturing cost of the brushless DC motor controller, Moreover, the manufacturing process of the brushless DC motor controller becomes more cumbersome. In addition, when the spring steel sheet is used to press the MOS tube, the pressure of the spring steel sheet is relatively high, and the position of the spring steel sheet is not e...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a brushless DC motor controller with simple structure, simple manufacturing process and low manufacturing cost for the above-mentioned defects of high manufacturing cost and cumbersome manufacturing process in the prior art. A New Controller for DC Motors

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