Brush assembly of cleaner

Abstract

A brush assembly of a cleaner includes a driving motor mounted at a cleaner main body, for generating a rotary force; a brush rotatably disposed at a suction opening formed at the cleaner main body; and a driving force transfer device installed between the driving motor and the brush, rotating the brush by transferring a rotary force of the driving motor to the brush, and protecting the driving motor by preventing transfer of a load generated at the brush to the driving motor. Accordingly, the driving motor can be continuously rotated even if the brush cannot be rotated by being caught by a stuff or the like, thereby preventing motor damage.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a brush assembly of a cleaner, and particularly, to a brush assembly of a cleaner capable of preventing motor damage by keeping the motor rotating when a brush cannot be rotated by being caught by a stuff or the like. [0003] 2. Description of the Background Art [0004] In general, a robot cleaner performs a cleaning operation while moving for itself without manipulation of a user, moves to a charging station if power of a battery is consumed during cleaning, and moves back to a cleaning zone to perform a cleaning operation when the battery charge is completed. [0005] A brush assembly for sweeping up dirt or foreign substances from a floor is installed at a suction opening through which dirt is sucked, of the robot cleaner. [0006]FIG. 1 is a side view showing a brush assembly of a robot cleaner in accordance with the conventional art. [0007] The brush assembly in accordance with the co...

AI Technical Summary

Benefits of technology

[0011] Therefore, an object of the present invention is to provide a brush assembly of a cleaner capable of preventing motor damage by normally rotating a driving motor when a brush cannot be rotated by being caught by a stuff or the like.

[0012] To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided a brush assembly of a cleaner comprising: a driving motor mounted at a cleaner main body, for generating a rotary force; a brush rotatably disposed at a suction opening formed at the cleaner main body; and a driving force transfer device installed between the driving motor and the brush, rotating the brush by transferring a rotary force of the driving motor to the brush, and protecting the driving motor by preventing transfer of a load generated at the brush to the driving motor.

[0017] To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided a brush assembly of a robot cleaner provided with a suction opening at the center of a bottom of a cleaner main body, performing a cleaning operation while moving for itself, and automatically charging a battery, comprising: a driving motor mounted at the cleaner main body, for generating a rotary force; a brush rotatably disposed at the suction opening; and a driving force transfer device installed between the driving motor and the brush, rotating the brush by transferring the rotary force of the driving motor to the brush, and preventing transfer of a load generated at the brush to the motor.

Problems solved by technology

However, because the brush driving force transfer device in accordance with the conventional art mechanically transfers a rotary force of the driving motor to the brush, a motor overload occurs as the brush cannot be rotated by being caught by a stuff or the like, causing motor damage.

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