CN202517972U - Automatic dust absorption telescopic blackboard eraser - Google Patents

Abstract

The utility model relates to an automatic dust absorption telescopic blackboard eraser. The automatic dust absorption telescopic blackboard eraser comprises a shell, wherein the shell is provided with an onward opening; the middle of the rear wall of the shell is fixedly provided with a motor, and the driving shaft of the motor is in transmission connection with a fan blade and a dust absorption sponge; the dust absorption sponge is positioned on the frontage of the fan blade, the opening of the shell is provided with a front cover, and the rear wall of the shell is provided with a dust outlet; the dust outlet is communicated with a dust outlet pipe in a closeness manner, and the other end of the dust outlet pipe is communicated with a dust storage vesicae in the closeness manner; and the shell is externally fixedly connected with an expansion link, the expansion link is provided with a switch, and the switch is electrically connected with the motor. The automatic dust absorption telescopic blackboard eraser provided by the utility model can be used for scraping a blackboard and can absorb chalk mill dust in the shell in time, the mill dust is avoided permeating, the dust absorption effect is good, and the use is convenient.

Description

The automatic dust absorption Retractable blackboard eraser

Technical field

The utility model relates to a kind of teaching aid, relates in particular to a kind of automatic dust absorption Retractable blackboard eraser.

Background technology

In school, when erasing the board after class, always have many chalk dusts and flying upward; The classmate front-seat near the classroom will and then eat chalk powder, if draw badly, dust also can be stayed in the classroom always; And the classmate who erases the board also can be made on the other hand dust, and is very unhygienic.

Summary of the invention

The purpose of the utility model provides good, the easy to use automatic dust absorption Retractable blackboard eraser of a kind of pick-up performance.

For realizing above-mentioned purpose, the technical scheme that the utility model adopts is:

A kind of automatic dust absorption Retractable blackboard eraser comprises shell, and shell has opening forward; The housing back wall center fixed is equipped with motor, it is characterized in that: be connected with flabellum and dust suction sponge on the drive axle of motor, the dust suction sponge is positioned at flabellum the place ahead; The opening part of shell is equipped with front shroud; Have the dust mouth on the rear wall of shell, the airtight dust outlet tube that is communicated with in place, dust mouth, the airtight storage dirt capsule that is communicated with of the dust outlet tube other end; Shell is fixedly connected with expansion link outward, and expansion link is provided with switch, and switch and motor are for being electrically connected.

The utility model can in time be drawn onto chalk dust in the shell after erasing the board, and avoids dust to fill the air, and pick-up performance is good, easy to use.

Description of drawings

Fig. 1 is the structural representation of the utility model.

In the accompanying drawing:

1, front shroud; 2, dust suction sponge; 3, flabellum; 4, shell; 5, motor; 6, dust mouth; 7, dust outlet tube; 8, storage dirt capsule; 9, expansion link; 10, switch.

The specific embodiment

Below in conjunction with accompanying drawing and specific embodiment the utility model is further described:

A kind of automatic dust absorption Retractable blackboard eraser, as shown in Figure 1, comprise shell 4; Shell 4 has opening forward, and shell 4 rear wall center fixed are equipped with motor 5, is connected with flabellum 3 and dust suction sponge 2 on the power transmission shaft of motor 5; Dust suction sponge 2 is positioned at flabellum 3 the place aheads, and the opening part of shell 4 is equipped with front shroud 1, has dust mouth 6 on the rear wall of shell 4; The airtight dust outlet tube 7 that is communicated with in 6 places, dust mouth, the airtight storage dirt capsule 8 that is communicated with of dust outlet tube 7 other ends; Shell 4 is outer to be fixedly connected with expansion link 9, and expansion link 9 is provided with switch 10, and switch 10 and motor 5 are for being electrically connected.

Claims (1)

1. automatic dust absorption Retractable blackboard eraser; Comprise shell (4), shell (4) has opening forward, and shell (4) rear wall center fixed is equipped with motor (5); It is characterized in that: be connected with flabellum (3) and dust suction sponge (2) on the power transmission shaft of motor (5); Dust suction sponge (2) is positioned at flabellum (3) the place ahead, and the opening part of shell (4) is equipped with front shroud (1), has dust mouth (6) on the rear wall of shell (4); The airtight dust outlet tube (7) that is communicated with is located in dust mouth (6), the airtight storage dirt capsule (8) that is communicated with of dust outlet tube (7) other end; Shell (4) is outer to be fixedly connected with expansion link (9), and expansion link (9) is provided with switch (10), and switch (10) and motor (5) are for being electrically connected.

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