Electric dust collector and suction member thereof

Abstract

The phenomenon exists that magnetic flux generated through a magnet weakens due to magnetic flux generated through a coil, the problem exists that efficiency of a motor is reduced, and torque cannot be increased efficiently. Provided is an electric dust collector having a suction member which can give consideration to a light weight and a torque increase without reducing the efficiency of the motor. By long holes which are in a direction the same as that of a motor shaft and are arranged on a housing of a configuration part of the magnet arranged on an inner surface of a housing of the motor, the magnetic flux generated through the coil is weakened, thereby inhibiting the weakening of magnetic flux through the magnet.

Description

technical field [0001] The present invention relates to an electric vacuum cleaner, and more particularly to an electric vacuum cleaner provided with a suction tool having a rotary cleaning body driven by a motor called a power blush, and the suction tool. Background technique [0002] An electric vacuum cleaner generally includes a vacuum cleaner body equipped with a dust collecting device and an electric blower; a suction piece that attracts dust from the cleaning surface; and an extension pipe and a suction hose connecting them, and has a structure commonly called a canister type . Furthermore, the vacuum cleaner body has an accommodating frame for accommodating the above-mentioned dust collecting device and electric blower, and is configured to be freely movable on the cleaning surface by wheels on the sides and bottom of the accommodating frame. [0003] The suction tool for the floor in such electric vacuum cleaners is provided with the rotary cleaning body which cons...

AI Technical Summary

Problems solved by technology

[0008] However, in the above-mentioned conventional electric motors, the following problems arise: in order to increase the torque, the diameter of the rotor must be increased, so the overall size of the electric motor increases, the weight of the suction piece increases, and the operability deteriorates.

However, if a long hole is opened in the flat part of the case, the magnetic circuit of the magnet will be cut off by the long hole, so there are problems such as a decrease in the efficiency of the motor, and there is a problem that the torque cannot be effectively improved.

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