DC motor

Abstract

The invention provides a direct current machine which comprises a frame, an armature, a stator, a front end cover assembly and a rear end cover assembly; wherein, the rear end cover assembly comprises a connecting part of a rear end part of an integral motor which is provided with structure characteristics of the rear end cover of a motor in common usage and structure characteristics of a brush basin, and electrical apparatus elements assembled on the connecting part, the shaft head of the armature is a shaft head with internal threads. The apparatus on the rear end of the motor in the invention is made into the connecting part of the rear end part of the integral motor by uniting the rear end cover of the motor in common usage and the brush basin into one body, and then the electrical apparatus elements are assembled on the connecting part and the brush basin, a brush holder and an induction frame are omitted, therefore, the direct current machine has the advantages of light weight, easy shaping and material saving; besides, the axial dimension is short, thus being capable of saving the space of the motor and being beneficial to leading the motor to be more thinner.

Description

technical field [0001] The invention relates to a motor, in particular to a DC motor. Background technique [0002] A DC motor includes a casing, an armature, a stator, a front end cover assembly, and a rear end cover assembly. The rear end cover assembly of a DC motor in the prior art generally includes a rear end cover, a brush basin, and electrical components installed on the brush basin. The cover is generally made of metal material and installed separately, and the brush basin is generally made of plastic and / or metal material and installed separately. Since such rear end cover assembly is composed of two different parts, it needs to be molded separately during production; it needs to be installed separately during installation, which is time-consuming, laborious and costly; moreover, it takes up more motor axial The size and space hinder the miniaturization and thinning of the motor. In addition, since the rear end cover made separately is usually made of metal mater...

AI Technical Summary

Problems solved by technology

Since such rear end cover assembly is composed of two different parts, it needs to be molded separately during production; it needs to be installed separately during installation, which is time-consuming, laborious and costly; moreover, it takes up more motor axial Size and space hinder miniaturization and thinning of motors

In addition, since the rear end cover made separately is usually made of metal material, the weight is relatively heavy, which not only consumes the metal material, but also increases the weight of the motor.

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