Anti-carbon deposition and anti-false welding commutator

Abstract

The invention discloses a commutator for preventing carbon deposition and anti-false welding, which includes 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 top of the commutation segments is provided with The welding wire hook is characterized in that: the inner end of the insulating groove is provided with an axial through groove, and the axial through groove is arranged in the same direction as the insulating groove and penetrates the upper and lower end surfaces of the base body. The invention can 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 commutator. Background technique [0002] There are two major factors in the normal case of the motor. One is the insulating tank of the commutator, resulting in a motor damage caused by the short circuit of the commutator; the biplings of the two-oriented wire hook and motor rotor coil There is no soldering between spot welding, resulting in damage caused by broken circuits. Its root cause is because the commutator is formed in a structural existence. [0003] The prior art commutator includes a substrate and a commutation sheet that is uniformly arranged in the outer circumference of the base, and the adjacent shifting sheet is insulated by an insulating tank, and the top of the substantial sheet is provided with a soldering wire hook. . Since the groove width of the insulating groove is generally controlled within 0.5 mm, but the depth is limited, that is, the space of the insulating groove is extremely poor, the insula...

AI Technical Summary

Problems solved by technology

Since the width of the insulation groove is generally strictly controlled within 0.5mm, and the depth is limited, that is, the space of the insulation groove is narrow and the ventilation conditions are extremely poor, and there are dead corners in the insulation groove, so the carbon powder produced by the carbon brush wear when the motor is working will inevitably be in the air. The accumulation in the insulation groove is not easy to discharge, even if the blowing method is used, the effect is very small; when the toner accumulates in the insulation groove to a certain extent, it is very likely that the short circuit of the commutator will occur

In addition, there is only one welding wire hook on the top of each commutator piece, so that when one commutator piece is spot-welded with two enameled wires, since the two enameled wires need to be arranged up and down, the welding hook is first required. The length must be long enough to cover the two enameled wires. In addition, the connecting semicircle of the upper and lower two enameled wires cannot contact the inner surface of the welding wire hook, so it will affect the stability of spot welding and prone to false welding.

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