CN2541205Y

CN2541205Y - Automatic dust removing eraser

Info

Publication number: CN2541205Y
Application number: CN 02212007
Authority: CN
Inventors: 房珊
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-01-07
Filing date: 2002-01-07
Publication date: 2003-03-26
Anticipated expiration: 2012-01-07

Abstract

The utility model provides an automatic dust-removing eraser, which is composed of a motor 1, a spring 2, a left contact 4, a right contact 3, a gear wheel 5, a driven gear wheel 6 and the like. The utility model is characterized in that the motor 1 is switched on to drive a drive gear wheel 8 to rotate, and the drive gear wheel 8 is engaged with the driven gear wheel 6 to drive the gear wheel 5 and a gear wheel 16 to rotate together. The upper gear wheel 5 is engaged with a rack 20, and the lower gear wheel 16 is engaged with a rack 21. When the eraser is near the right edge of the blackboard, the right contact 3 contacts a switch 17 to start the motor 1 to counter-rotate from right to left, then a motor 11 is started, thus the dust produced by the eraser is automatically absorbed and filtered through a dust-collecting hood 14 and is then collected in a dust-collecting container, and the process is repeated in this way. The utility model can save time and labor to automatically clean blackboards, which has a dust-removing function.

Description

Automatic dust-removing blackboard eraser

Technical field

The utility model relates to the stationery sports goods field, is specially kind of an automatic dust-removing blackboard eraser.

Background technology

The employed blackboard eraser of school mostly is to hold blackboard eraser with hand to erase the board at present, use all rightly among a small circle, will make dust from flying on a large scale, promptly unhygienic, effort very again if use, and cause room air pollution, have a strong impact on the healthy of teachers and students.

Summary of the invention

The purpose of this utility model provides and a kind ofly can overcome above-mentioned defective, the automatic division blackboard eraser of time saving and energy saving again, clean hygiene.

The purpose of this utility model is achieved through the following technical solutions,

The utility model has the advantages that simple in structure, time saving and energy saving, health, fast, have certain social, economic worth.

Description of drawings

Fig. 1 is a main TV structure schematic diagram of the present utility model;

Fig. 2 is the side structure schematic diagram of Fig. 1.

The specific embodiment

Automatic dust-removing blackboard eraser, it has brush 10, metal frame 7 and on metal frame 7, be provided with motor 1, spring 2, left side contact 4, right contact 3, gear 5 and driven gear 6, it is characterized in that motor 1 is installed in metal frame 7 tops, motor 1 is connected with driving gear 8, driving gear 8 and driven gear 6 engagements, the diameter of gear 6 is bigger than the diameter of other gear, gear 6 and gear 5, gear 16 connects by axle 15, gear 5 is meshed with tooth bar 20, gear 16 is meshed with tooth bar 21, spring 9 is equipped with at the two ends that are installed in the brush 10 of metal frame 7 right-hand members, left side contact 4 is connected with motor 1 with touch switch 17 by lead with right contact 3, metal frame 7 is connected between guide rail 18 and the guide rail 22, metal frame 7 tops are provided with switch 17 and are equipped with by pipeline 12 and the electronic air exhauster 11 that the dust gathering arrester 14 on the right is connected in the front of metal frame 7, are provided with dust pocket 13 below metal frame 7.During use, 1 energising of power supply motor drives driving gear 8 and begins to rotate, with driven gear 6 engagements, thereby driven gear 5 rotates with gear 16, cog and 5 be meshed with tooth bar 20, lower gear 16 is meshed with tooth bar 21, make the utility model moving linearly from left to right, when brush 10 is run into blackboard right-hand member edge, the right contact 3 touch switch 17 are opened, and make its motor counter-rotating, and the utility model just can move from right to left, motor 11 startups this moment, the dust that produces that erases the board sucks, filters and concentrate in the dust pocket from dust gathering arrester 14; When the utility model moved from right to left, when brush was run into blackboard left end edge, contact 4 touch switch 17 in the left side were opened, and its motor 1 is just being changeed, and the utility model just can move from left to right.Motion just can realize task of the present utility model so repeatedly.

Claims

1, automatic dust-removing blackboard eraser, it has brush (10), metal frame (7) and on metal frame (7), be provided with motor (1), spring (2), left side contact (4), right contact (3), gear (5) and driven gear (6), it is characterized in that motor 1 is installed in metal frame (7) top, motor (1) is connected with driving gear (8), driving gear (8) and driven gear (6) engagement, the diameter of gear (6) is bigger than the diameter of other gear, gear (6) and gear (5), gear (16) connects by axle (15), gear (5) is meshed with tooth bar (20), gear (16) is meshed with tooth bar (21), spring (9) is equipped with at the two ends that are installed in the brush (10) of metal frame (7) right-hand member, left side contact (4) is connected with motor (1) with touch switch (17) by lead with right contact (3), metal frame (7) is connected between guide rail (18) and the guide rail (22), metal frame (7) top is provided with switch (17) and in the front of metal frame (7) the electronic air exhauster (11) that is connected with the dust gathering arrester (14) on the right by pipeline (12) is installed, and is provided with dust pocket (13) in metal frame (7) below.