Commutator, motor and cutter

Abstract

The invention discloses a commutator, a motor and a cutter. The commutator comprises: an insulating substrate; the commutator comprises an insulating substrate, commutator segments, the commutator segments are arranged on the periphery of the insulating substrate, the commutator segments are provided with a plurality of K-shaped inner hooks so as to be connected to the insulating substrate, and the diameter of the commutator is greater than or equal to 7.8 mm and less than 8.8 mm. According to the commutator with the structure, the situation that a plurality of coulter teeth are arranged along the circumferential direction of the same height in the prior art is avoided by changing the arrangement of the cutter, so that the situation that the distance between adjacent coulter teeth is limited by the size of the commutator and the coulter teeth are too small is avoided; the service life of a cutter can be prolonged, the economic cost is reduced, and mass production can be achieved, so that the commutator with the diameter smaller than 8.8 mm and the K-shaped inner hook can be machined in a mass production mode.

Description

technical field [0001] The invention relates to the technical field of commutators, in particular to a commutator, a motor and a tool. Background technique [0002] As one of the core components of DC motors and AC motors, the commutator is a rotary electrical switch, a device connected to the winding coil of the motor, which periodically changes the distance between the motor rotor and the external circuit depending on the sliding contact of the motor carbon brush. The direction of the current between them makes the motor run continuously. The commutator includes a commutator piece, and the inner hook of the commutator piece has a C-type inner hook and a K-type inner hook. The processing technology of the C-type inner hook is more mature, and the K-type inner hook is more mature than the C-type inner hook. In other words, the bonding area between the K-type inner hook and the insulating substrate is larger, the bonding force is greater, and the comprehensive mechanical pro...

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the extremely short life of the tool, the high economic cost and the lack of possible Mass production, which brings difficulties to mass production of commutators with a diameter of less than 8.8 mm and a K-shaped inner hook, thereby providing a commutator, motor and tool

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