Motor, electric bolwer and electric duster

Abstract

A motor in which a measure for improving brush loss is taken while satisfying both the motor efficiency and the abrasion life of a brush effectively. An electric fan and a vacuum cleaner are also provided. In a motor where a stator (8) and an armature (3) are constituted of a laminated core, a stator winding (9) is wound around the stator (8) and an armature winding (4) is wound around the armature (3), and the stator winding (9) is electrically connected in series with the armature winding (4) through mechanical sliding contact of a brush (11) with a commutator (5), the brush (11) is composed of a metal material and the sliding surface (51a) of the commutator (5) on the brush (11) is composed of a carbon material.

Description

technical field [0001] The present invention relates to a motor with a brush, an electric blower equipped with a motor with a brush, and an electric vacuum cleaner equipped with the electric blower. Background technique [0002] An electric vacuum cleaner operates an electric blower to rotate a fan, sucks dust-containing air from a suction port, introduces the sucked air into a motor through a rectifier vane, and discharges it from a discharge port. Thereby, air containing dust is introduced into the inside of the dust collection bag arrange|positioned in front of a motor, and dust is captured (for example, refer patent document 1). [0003] The power supply of the motor driving the fan of the above-mentioned electric blower is a single-phase AC power supply, and a motor equipped with a commutator utilizing a single-phase AC having series characteristics is used. In this case, there is a method of directly inputting an external voltage for operation, and a method of control...

AI Technical Summary

Problems solved by technology

However, as mentioned above, when high input and high rotation speed are required for the purpose of increasing the suction power, in order to ensure the required life, the shape of the brush becomes larger, and the maximum 6.5mm×10mm is produced. , products with a maximum length exceeding 35mm

By increasing the size of the brush, the wear life of the brush can be improved, but the improvement in efficiency tends to deteriorate

[0017] In this way, in the past, regarding the electric blower installed in the electric dust collector, an effective measure for improving the brush wear that satisfies both the motor efficiency and the brush wear life has not been found.

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