A motor and its brush holder

Abstract

The invention discloses a brush holder device and provides a novel trapezoidal groove type brush holder surface structure. The side face of the brush holder surface structure is provided with a trapezoidal groove, the bottom surface of the structure is provided with supporting ribs, and the top surface of the structure is provided with a rectangular open groove capable of containing an electric brush for operation, so that the contact area between a brush holder and a carbon brush is decreased by 45% compared with a traditional structure, and a heat dissipation effect of the carbon brush is obviously improved. The structure can be formed through one-time injection molding, the number of structure parts of the integral structure can be decreased, and the production cost is obviously reduced. A novel wire distribution structure is provided with a rectangular counter bore, a power line and a carbon brush connecting head can be fixed, meanwhile four processes of a traditional wiring technology are decreased to be two processes, the production efficiency can be greatly improved, and the production process can be reduced. A novel power line fixing structure is provided with a sharp-nose hook and a rectangular through hole structure, a power line outgoing line can be fixed, individual power line fixing parts can be omitted compared with a traditional structure, and the motor production cost is reduced. The invention further discloses a motor applying the brush holder device.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a motor and a brush holder device thereof. Background technique [0002] The current brush holders commonly used in the industry are affected by materials and molding methods. The inner wall and the surface of the carbon brush are in contact with each other when the motor is running. The contact area can generally reach 80% or more of the overall surface area of ​​the inner cavity of the brush holder. The gap between the two is very small. Less, resulting in poor cooling effect when the brush is running. [0003] At the same time, according to the traditional method of the industry, the end of the carbon brush lead-out wire is generally crimped with a terminal, and then the terminal is connected to the carbon brush box, and then the power line with the terminal crimped at the end is connected to the carbon brush box to realize the connection between the carbon brush and the power ...

AI Technical Summary

Problems solved by technology

The number of parts used is large, the process flow is many, time-consuming and labor-intensive

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