Dust-collecting blackboard eraser

Abstract

The invention discloses a dust-collecting blackboard eraser which comprises a blackboard eraser body, an erasing surface, transmission mechanisms, a dust collecting mechanism and a dust storage mechanism; the erasing surface is arranged on the bottom surface of the blackboard eraser body; the transmission mechanisms are arranged at the two sides of the erasing surface; each transmission mechanism comprises a friction wheel and a transmission gear group; each friction wheel is connected with the input end of each transmission gear group; the dust collecting mechanism is positioned in the blackboard eraser body; and the dust storage mechanism is arranged on the back surface of the blackboard eraser body. The dust-collecting blackboard eraser disclosed by the invention utilizes friction force to drive the mechanism to rotate to generate static electricity, is energy-saving and environmentally-friendly; and meanwhile, the dust-collecting blackboard eraser collects dust through static electricity, is simple in structure, is high in dust collecting efficiency and is convenient to use.

Description

[0001] The invention belongs to the technical field of teaching appliances, and in particular relates to a dust-absorbing blackboard eraser. Background technique [0002] Blackboard erasers are often used in classroom teaching. When traditional blackboard erasers are used to wipe chalk writing on the blackboard, a large amount of chalk dust will be produced. Long-term inhalation of chalk dust is not conducive to the health of teachers and students. The currently known dust-absorbing blackboard eraser is An electric vacuum device is installed on the back, and the wind pressure generated by the fan sucks the chalk dust into the collection chamber, which is not only noisy, but also consumes power, and requires frequent charging or battery replacement. Therefore, it is necessary to design a new type of dust-removing blackboard eraser. Contents of the invention [0003] According to the deficiencies in the prior art above, the technical problem to be solved by the present inventio...

AI Technical Summary

Problems solved by technology

[0003] According to the deficiencies in the prior art above, the technical problem to be solved by the present invention is to propose a dust-absorbing blackboard eraser. The roller on the blackboard eraser drives the rotation of the electrostatic friction wheel to generate electrostatic adsorption and collect chalk dust, which solves the problem that the traditional blackboard eraser cannot Dust collection and electric vacuuming blackboard eraser consume a lot of energy and noise, it has the characteristics of energy saving, environmental protection, and high dust collection efficiency

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