CN200970987Y - Eraser - Google Patents

Abstract

The utility model relates to a blackboard eraser, containing an eraser body, three pulleys are hinged with the front end of the eraser body with holes, a brush is arranged on the surface wall of the three pulleys, on the inner wall of the tail end of the eraser body, three protruding dent grooves are arranged, inside the three protruding dent grooves, the brush which corresponds to the brush arranged on the surface wall of the three pulleys is arranged, the tail end of the eraser body is arranged with a telescopic handle. The utility model is simple in structure and convenient in application, which can effectively collect powder and dust, and prevent the powder and dust from being harmful to the human body.

Description

Blackboard eraser

Technical field the utility model relates to a kind of stationery, especially a kind of blackboard eraser.

Technical background is present, and the blackboard eraser that teaching is used is the disappear wooden blackboard eraser of dirt function of a kind of nothing, and dust during use is easy to be sucked by the people owing to can't eliminate, and human body is damaged.

The summary of the invention the purpose of this utility model is to overcome above-mentioned said shortcoming and a kind of blackboard eraser simple in structure is provided.

For achieving the above object, the utility model blackboard eraser, comprise rub body, for the front end at porose rub body is hinged with three pulleys, the surface wall of three pulleys is provided with hairbrush, the inner wall at end of rub body is provided with the groove of three projectioies, and it is corresponding with the hairbrush that the surface wall of three pulleys is provided with to be provided with hairbrush in the groove of three projectioies, and the end of rub body is provided with retractable handle.

The utility model has the advantages that: simple in structure, easy to use, can suck dust effectively, prevent that the many human bodies of dust from damaging.

Description of drawings Fig. 1 is the utility model blackboard eraser overall structure schematic diagram.

The specific embodiment such as Fig. 1 show, the utility model blackboard eraser, comprise rub body 1, for the front end at porose rub body 1 is hinged with three pulleys 2, the surface wall of three pulleys 2 is provided with hairbrush, the inner wall at end of rub body 1 is provided with the groove of three projectioies, and it is corresponding with the hairbrush that the surface wall of three pulleys 2 is provided with to be provided with hairbrush in the groove of three projectioies, and the end of rub body 1 is provided with retractable handle 3.

Claims (1)

1, a kind of blackboard eraser, comprise rub body (1), it is characterized in that: the front end at porose rub body (1) is hinged with three pulleys (2), the surface wall of three pulleys (2) is provided with hairbrush, the inner wall at end of rub body (1) is provided with the groove of three projectioies, it is corresponding with the hairbrush that the surface wall of three pulleys (2) is provided with to be provided with hairbrush in the groove of three projectioies, and the end of rub body (1) is provided with retractable handle (3).

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