CN2048430U - Automatic blackboard brush without dust - Google Patents

Abstract

The utility model discloses an automatic blackboard brush without dust. The writing of the chalk is rubbed by the movement of the main brush on the surface of the blackboard, the main brush is driven by the controlled motive power. The rubbed powder dust falls through the gap among the main brush and the left and right sub brushes into a track slot below the blackboard and is reclaimed automatically by a reclaiming brush. The labor of manual cleaning of the blackboard by the teachers (or students) can be replaced, and the problems that the pollution of dispersed powder dust when doing manual cleaning can be solved, thereby, the sanitary surrounding environment of the teaching platform and the health of the teachers and the students can be ensured sufficiently. The utility model has the advantages of low cost, light weight, rapid and automatic cleaning, ideal function of dust preventing, etc.

Description

Automatic blackboard brush without dust

Automatic dustless teaching brush device is an a kind of new type auto machinery of cleaning the chalk writing on the blackboard for education face with water.This device can be cleaned the vertical arbitrarily part of whole blocks blackboard or blackboard left side automatically with water in 25 seconds.And in cleaning process with water, do not have dust from flying, realize the dust the automatic recovery.The present invention can replace manually being cleaned with water by teacher (or student) at present the work of blackboard.Solved when manually cleaning with water the dust pollution problems that scatters again.Thereby the health of religion dais surrounding environment and teachers and students' health are fully protected.

This device is mainly formed (Fig. 1, Fig. 4) by motor 1, transmission rope 2, guide-track groove 4, actuator 13 and brushing tool 5 etc.Scroll wheel 14 is housed on the actuator 13, reclaims brush 15 and rotation thin bar 16, rotation thin bar 16 is actively socketed on (Fig. 4) on the actuator; Brushing tool 5 comprises brushing tool box 8, main brush 7, butterfly spring 10, pressure adjustment knob 9 and is actively socketed on the dustproof left secondary brush 6 of brush box 8 both sides, dustproof right secondary brush 11(Fig. 2); Actuator 13 is by nut 12 link to each other with brush box 8 (Fig. 4); Dustproof left secondary brush 6, dustproof right secondary brush 11 connect (sketch 3) by two springs with rotation thin bar 16 respectively; Pressure between main brush 7 and the frosted glass blackboard 17 is regulated by knob 9; Transmission rope 2 is by lying in the end (sketch 3) of rotation thin bar 16 in the guide-track groove.Motor positive and inverse, transmission rope 2 just drive actuator 13 and move in guide-track groove, and brushing tool 5 comes and goes on blackboard thereupon and cleans with water.

Brushing tool generally stops at the ultra-Left side of blackboard, after adopting the round control circuit of work top, when needs are cleaned blackboard with water from left to right, motor is just changeing starting, the transmission rope 2 at first thin bar 16 of driven rotary rotates to certain angle to the right, effect by two springs, the secondary brush 6 in a dustproof left side compresses blackboard immediately, dustproof right secondary brush 11 leaves blackboard (sketch 3) thereupon, afterwards, transmission rope 2 drives whole actuator 13 and moves right in guide-track groove, and blackboard is cleaned in brushing tool 5 beginnings from left to right with water, and the bristle of main brush 7 has just rubbed off the chalk writing on the blackboard (Fig. 2).Because the brush finish of main brush 7 has a vertical centre joint, dust just along the centre joint of main brush finish and main brush with prevent dust about gap between the pair hang in the following guide-track groove, the recovery on the actuator is brushed 15 and again it is recovered to 3 li of dust boxes.When brushing tool arrives blackboard correct frame limit, again counter-rotating behind the motor automatic stop, transmission rope changes transmission direction driven rotary thin bar 16 and rotates to certain angle left, by the effect of spring, and dustproof right secondary brush 11 automatic impaction blackboards, dustproof left secondary brush 6 leaves blackboard automatically, all the other principles are the same, when brushing tool arrives blackboard left frame limit, and motor automatic stop, blackboard comes and goes to be cleaned with water completely, needs approximately for 25 seconds.

Originally be installed on blackboard panel left side brush off-position and put, vertically paste cross section triangular in shape scrape grey rib, on seamed edge, scrape out-of-dately when main brush finish, to remove the brush finish dust stratification, long-term use still can keep the brush finish cleaning; Brushing tool cover of device on brushing tool 5 can carry out secondary and prevent dust; Consider the dull symmetrical and elegant in appearance of blackboard, on the leg of frame of the blackboard left and right sides, respectively install again a microscler lid of plastics, with hidden motor and the brushing tool that stops.

This device should by the average effective write area of blackboard be 3 * 1 square metres and design.Micromachine 1 general electrical machinery plant all can produce in short-term, transmission rope 2 is selected nylon rope or fiber steel cable, guide-track groove 4 is take sheet metal as the material punch forming, master's brush 7 is take steel plate as brush board, paste the common plane hair on the brush board and namely consist of main brush, other member manufacturing is simple, common mechanical factory all can produce.After the user buys this device, only need and to use in original this guide-track groove of the varying sized threading of frosted glass blackboard.When the teacher carries out teaching board, should be with near blackboard left side (brush off-position a put) plan part as calculation, mapping or usefulness temporarily, so that clean with water at any time on the left of the blackboard.For this reason, this device can also impel the teacher to have good plan writing on the blackboard custom.

This installation cost is low, and (being no more than 10 kilograms) in light weight is simple to operate, safe in utilization, and dustless function ideal is bound to meet to such an extent that educational circles' utmost point is approved widely.

Claims (2)

1, a kind of automatic blackboard brush without dust comprises motor, transmission rope, control circuit, guide-track groove, actuator, scroll wheel, rotation thin bar, spring and dust box, it is characterized in that main brush being housed 7. in brush box 8., 7. the master brushes and 9. the pressure between the blackboard regulated by knob; Brush box both sides loose joint 8. dustproof left secondary brush 6., dustproof right secondary brush 10., by the effect of spring will control power by be delivered on the actuator prevent dust about pair brush, namely when 7. main brush is cleaned with water to the right, dustproof left secondary brush compresses blackboard and (makes between main brush and the dustproof left secondary brush and form vertical seal clearance, scatter with the dust that prevents from hanging and to fly upward), dustproof right secondary brush leaves blackboard, otherwise then opposite; And the automatic recovery brush ⒂ and blackboard surface left side brush off-position are housed in the guide-track groove below the blackboard put and vertically pasting one and scrape grey rib (to remove the brush finish dust stratification).

2, automatic dustless teaching brush device according to claim 1 is characterized in that the brush finish 7. of main brush has a vertical centre joint, makes brush finish be divided into left and right sides two parts.