A hook type commutator

Abstract

The invention discloses a hook-type commutator, which comprises a base body and commutation segments uniformly arranged on the outer circumference of the base body, insulating grooves are provided between adjacent commutation segments for insulation, and the feature is that the commutation segments have double hooks Design, there are two welding wire hooks on the top of each commutator piece, and the two welding wire hooks are arranged side by side along the circumferential direction of the commutator piece and separated from each other by a certain distance; the inner side of the welding wire hook is formed at the top of the hook. Forming surface with R angle at both ends and straight line in the middle. The invention can completely solve the problems of carbon deposition and virtual welding in the commutator, thereby eliminating the two most important factors of motor damage, greatly improving and effectively ensuring the service life of the motor, and low production cost.

Description

technical field

[0001] The present invention relates to a hook type commutator. Background technique

[0002] There are two main factors for the damage of the motor under normal conditions. One is the carbon deposition in the insulation groove of the commutator, which leads to the damage of the motor caused by the short circuit of the commutator; the other is the welding hook of the commutator and the enameled wire of the motor rotor coil. There is a virtual weld between them after spot welding, resulting in motor damage caused by an open circuit. The fundamental reason is that there are certain deficiencies in the structure of the commutator.

[0003] The hook-type commutator of the prior art includes a base body and commutator segments uniformly arranged on the outer circumference of the base body, insulation grooves are provided between adjacent commutator segments, and welding wires are provided on the top of the commutator segments hook. Since the width of the insula...

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