Motor brush holder and preparation method thereof

Abstract

The invention discloses a motor brush holder and a preparation method thereof. The motor brush holder comprises an one-time injection molding shell, a two-time injection molding shell and a circuit piece, wherein the one-time injection molding shell is provided with a mounting through hole, and the circuit sheet comprises a first conductive sheet, a second conducting piece, a first conducting block, a second conducting block, a first conducting hole, a second conducting hole, a first transition conductive piece, a second transition conductive piece and a punching piece. The first conductive block, the second conductive block, the first transition conductive sheet and the second transition conductive sheet are injected into the one-time injection molding shell. The first conducting block and the second conducting block are exposed outside the one-time injection molding shell with set explosion parts, and the rest parts are completely wrapped by the one-time injection molding shell. Themotor brush holder and the manufacturing method thereof solve the problem that an electric brush is exposed, and prevent the abnormal invasion of conducting media. The performance of the product is more stable and durable, and the requirements of customers are met to the largest extent.

Description

technical field [0001] The invention relates to a motor device, in particular to a motor brush holder and a manufacturing method thereof. Background technique [0002] The function of the brush holder is to apply pressure to the carbon brush that is in sliding contact with the surface of the commutator or collector ring through the spring, so that it can conduct current stably between the fixed body and the rotating body. Both brush holders and carbon brushes are very important parts for motors. No matter how good the characteristics of the carbon brush are, if the brush holder is not suitable, the carbon brush will not only not be able to give full play to its excellent characteristics, but will also have a great impact on the performance and life of the motor itself. [0003] In order to improve the prior art, various solutions have been proposed. For example, Chinese patent literature discloses a motor brush holder [application number: CN201620610154.7], which includes ...

AI Technical Summary

Problems solved by technology

Although the above solution solves the deficiencies of the prior art to a certain extent, it does not solve the problem of exposed brushes, and the overall design is unreasonable

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