Electric chalk eraser

Abstract

The invention discloses an electric chalk eraser comprising a case, four eraser wheels, a dust collection box, bevel gears, a motor, a battery and a switch. The turning corners of the four vertical edges of the flat rectangular case are arc corners; the dust collection box is flat rectangular, the four vertical edges of the dust collection box are concave arc surfaces, and the dust collection boxis mounted in the middle of the case; each eraser wheel is composed of a shaft and a plurality of rubber blades; the four eraser wheels are mounted in the middles of the arc corners of the four vertical edges of the case and the concave arc surfaces of the four vertical edges of the dust collection box correspondingly, wherein a gap with the width being 0.5 mm is arranged between each eraser wheeland the corresponding arc corner and the corresponding concave arc surface, and the four eraser wheels are mutually connected together through the bevel gears; the motor drives the four eraser wheelsto rotate simultaneously through connection of one of the long eraser wheels with the corresponding bevel gear so that peripheral chalk dust can be erased, and meanwhile the peripheral chalk dust ispushed into the dust collection box to be stored; and the motor, the battery and the switch are mounted in a box on the case. The electric chalk eraser is capable of erasing the dust clearly and achieving the dust-free effect and small in size.

Description

technical field [0001] The invention relates to a device for wiping chalk dust, in particular to a small, clean and dust-free electric chalk eraser. Background technique [0002] Known electric chalk erasers such as CN201009607Y at present, they all adopt blower fan to suck chalk dust, there is the deficiency that the volume is large and complex in structure. Contents of the invention [0003] In order to overcome the shortcomings of the traditional electric chalk eraser, which has a large volume and complex structure, the object of the present invention is to provide an electric chalk eraser with a small volume and clean dust. [0004] The technical solution adopted by the present invention to solve the problem is: it includes a cover, a rubbing wheel, an ash collection box, a bevel gear, a motor, a battery, a switch, and the turning angles of the four vertical sides of the flat rectangular cover are arc angles, and the ash collection The four vertical sides of the box a...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the traditional electric chalk eraser with large volume and complex structure, the object of the present invention is to provide an electric chalk eraser with small volume and clean dust.

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