Coreless brushed DC motor and carbon brush-terminal component thereof

Abstract

The invention relates to a coreless brushed DC motor and a carbon brush-terminal component thereof. The coreless brushed DC motor comprises a cylindrical enclosure, a front end cover, a rear end cover, a phase changer and a carbon brush-terminal component, wherein the phase changer is arranged on a motor rotating shaft and is close to the rear end cover, and the carbon brush-terminal component is arranged on the rear end cover and matched with the phase changer; the carbon brush-terminal component comprises a pair of terminals and a pair of carbon brushes, wherein the terminals pass through a terminal slot arranged on the rear end cover to extend from inside to outside, the carbon brushes are respectively connected with the corresponding terminals by carbon brush wires, a through hole is provided in the terminal, one end of the carbon brush wire is fixed on the carbon brush, and the other end of thereof passes through the through hole to be inserted and fixed in the terminal slot with the terminal. By adopting a brand new carbon brush assembling structure, the invention avoids the welding work stations of the carbon brushes and the terminals, improves the conduction effect of the carbon brushes and the terminals and can quickly and correctly assemble the end cover set without workholders. A screw and a tetragonal nut are adopted to lock stators and the end cover set so as to ensure stable structure.

Description

technical field [0001] The present invention relates to motors, more specifically, to a hollow cup brushed DC motor and its carbon brush-terminal assembly. Background technique [0002] The carbon brush wires and terminals of the current coreless brushed motors are connected by welding. This connection method sometimes affects the electrical connection performance between the carbon brushes and the terminals due to weak welding, thus causing the motor to fail to work. Moreover, the welding process also needs to be equipped with a welding station, which requires more operating equipment, personnel and space. [0003] In addition, most of the carbon brushes of existing hollow cup brushed motors are two curved carbon brush pieces with elasticity, the structure is relatively complicated, and the carbon brushes may be interrupted during assembly. [0004] Furthermore, the end cover of the existing hollow cup brushed motor is connected by riveting to the stator casing, and the ax...

AI Technical Summary

Problems solved by technology

[0002] At present, the carbon brush wires and terminals of the coreless brushed motor are connected by welding. This connection method sometimes affects the electrical connection performance between the carbon brush and the terminal due to weak welding, thus causing the motor to fail to work.

And the welding process also needs to set up a welding station, which requires more operating equipment, personnel and space

[0003] In addition, the carbon brushes of the existing hollow cup brushed motors are mostly two curved carbon brush pieces with elasticity, the structure is relatively complicate

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