CN2150075Y

CN2150075Y - Roller type blackboard-eraser with automatic dust collector

Info

Publication number: CN2150075Y
Application number: CN 93206227
Authority: CN
Inventors: 蒲远春
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-03-10
Filing date: 1993-03-10
Publication date: 1993-12-22
Anticipated expiration: 2003-03-10

Abstract

The utility model relates to a roller type blackboard eraser with an automatic dust collector which belongs to a teaching aid. The utility model adopts a dust collector to collect powder dust; a dust pipe can be winded on a winded pipe disc and put into a body; the eraser core of the blackboard eraser is contacted by nylon hasps. The utility model has the advantages of compact structure, small volume, the convenient change of the eraser core, the flexible rotation of the blackboard eraser and convenient operation. The utility model can totally inhale powder dust and be extensively used for the occasions of writing by chalks.

Description

Roller type blackboard-eraser with automatic dust collector

The utility model belongs to realia, particularly a kind of pipe volume type blackboard eraser with automatic cleaner.

The general at present blackboard eraser that uses is that a felt is connected on the solids mostly, and dust from flying when erasing the board has a strong impact on teachers and students' health, and contaminated environment is polluted teaching aid.Chinese patent CN85202270 discloses a kind of blackboard brush that has electric dust collector, its weak point is that blackboard brush and rubber tube are hung on the pulley with rope, also has counterweight to make balance, and blackboard brush is placed on the blackboard for a long time, structure more complicated, messy, operation are convenient inadequately.

The purpose of this utility model is exactly will overcome above-mentioned deficiency and a kind of compact conformation of providing, and sweep-up pipe can coil, the pipe volume type blackboard eraser of the rational automatic dust absorption of wiping blackboard structure.

The solution that realizes the utility model purpose is to comprise dust catcher, sweep-up pipe 13, blackboard eraser 14, hollow disc axle 17 is installed in the casing 2, on the dish axle 17 pipe crimping dish 21 is installed, spooling sweep-up pipe 13 on the pipe crimping dish 21, one of sweep-up pipe 13 links with blackboard eraser 14, and the other end links with dish axle 17, and dish axle 17 links with dust bag 25 by hollow body 29, motor 28.On the dish axle 17 clockwork spring 16 is installed, the other end of clockwork spring 16 is installed on the clockwork spring frame 15.Casing 2 is provided with chalk holder 6.

The structure of blackboard eraser 14 is that shell 30 links by spring 37 and core body, is provided with balance weight 35 at interval around the core body and between the shell 30.The structure of core body is that blackboard eraser core 36 is attached on the blackboard eraser core pasting board 39.Blackboard eraser core 36 is to adopt Buddhist nun's human relations hasp 38 with being connected of blackboard eraser core pasting board 39.Shell 30 is provided with a Plastic net film 34 and a nail 40.

The utility model has the advantages that sweep-up pipe can be coiled in the casing, compact conformation, volume is little, and is easy to operate.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is an outline drawing of the present utility model;

Fig. 2 is a structural representation of the present utility model;

Fig. 3 is the cutaway view of blackboard eraser of the present utility model;

Fig. 4 is the upward view of Fig. 3.

Be connected with handle 1 by fixed screw 3 on the casing 2, on handle, be provided with two nail holes 4, be used for complete machine is hung on the wall, casing 2 is provided with a case lid 5, this case lid 5 is provided with chalk holder 6, place the board wiper box 7 of blackboard eraser 14, on board wiper box 7, power switch is installed, when picking up blackboard eraser 14, power connection is when putting down blackboard eraser 14, power supply disconnects, also design has sliding panel mouth 11 on case lid 5, and is furnished with sliding panel 12, has a hole 10 on sliding panel 12, sweep-up pipe 13 passes from this hole 10 and stretches to outside the casing 2, when sweep-up pipe 13 goes out or on pipe crimping dish 21 during spooling, the position in hole 10 all changes from 2 lira of casings, it is reciprocating along the length direction of sliding panel mouth 11 just to drive sliding panel 12.

In casing 2, casing 2 is equipped with dish axle 17 by pipe crimping dish bearing 22, and this dish axle 17 is hollow, is fixedly connected with pipe crimping dish 21 on dish axle 17, and design has helicla flute 18 on the external diameter of pipe crimping dish 21, is used for guiding the spooling of sweep-up pipe 13.Coiling one that is associated with clockwork spring 16 on the axle 17, the other end of clockwork spring 16 combines as a whole by clockwork spring frame 15 and casing 2, when sweep-up pipe 13 is pulled out casing 2, clockwork spring 16 just tightens up energy storage, like this when sweep-up pipe 13 does not apply pulling force, the rebound effect that relies on clockwork spring with the automatic spooling of sweep-up pipe on pipe crimping dish 21, one of sweep-up pipe 13 links with hollow dish axle 17, other end and blackboard eraser 14 link, dish axle 17 and hollow body 29 UNICOMs, hollow body 29 is by connecting tube 27, motor 28 and dust bag 25 UNICOMs.Dust bag 25 is placed in the dust box 26, and filter 23 is installed on the exhaust duct 24, and exhaust duct 24 is arranged on the dust box 26.

The shell 30 of blackboard eraser 14 is associated with dirt tube 31, dirt tube 31 by silk muzzle pipe 32, rotate pipe 33 and link with sweep-up pipe 13, shell 30 is provided with a Plastic net film 34 and a nail 40, their effect is exactly an air intake smoothly when guaranteeing that motor rotates.Be provided with a core body in shell 40, the structure of this core body is to post blackboard eraser core 36 by nylon hasp 38 on blackboard eraser pasting board 39, after 36 wearing and tearing of blackboard eraser core are bad, changes just more convenient like this.Core body links by spring 37 and shell 30, and the effect of spring 37 is strokes of adjusting core body, so that solve the wear problem of blackboard eraser core 36.Be provided with balance weight 35 at interval around core body and between the shell 30, its effect is the distance that guarantees between shell 30 and the core body, so that air intake is exactly to keep the core body balance in addition.

Like this behind logical upward power supply, when picking up blackboard eraser 14, motor 28 is with regard to startup work, pull out the sweep-up pipe 13 of spooling on pipe crimping dish 21, clockwork spring 16 shrinks energy storage simultaneously, just can erase the board, owing to be provided with a muzzle pipe 32 between blackboard eraser 14 and the sweep-up pipe 13 and rotate pipe 33, blackboard eraser 14 just rotates freely, dust just is drawn onto: shell 30-dirt tube 31-sweep-up pipe 13-dish axle 17-hollow body 29-tube connector 27-dust bag 25, wiped blackboard, do not applied external force for sweep-up pipe 13, by the effect sweep-up pipe 13 of clockwork spring 16 just by spooling automatically on pipe crimping dish 21, blackboard eraser 14 is placed in the board wiper box 7, press power switch, cut off the electricity supply, motor 28 quits work.

This covering device can also be provided with machine governor 20, stirs the speed that speed adjusting lever 19 just can be adjusted motor.In dust box 26 bottoms one switch is arranged, when the dust in the dust bag 25 reaches constant weight, switch connection, indicator lamp 19 is just bright, tells people should clear up the dust in the dust bag 25.

Claims

1, a kind of pipe volume type blackboard eraser with automatic cleaner, comprise dust catcher, sweep-up pipe 13, blackboard eraser 14, it is characterized in that being equipped with in the casing 2 hollow disc axle 17, on the dish axle 17 pipe crimping dish 21 is installed, spooling sweep-up pipe 13 on the pipe crimping dish 21, of sweep-up pipe 13 links with blackboard eraser 14, the other end links with dish axle 17, and dish axle 17 links with dust bag 25 by hollow body 29, motor 28.

2,, it is characterized in that on the said dish axle 17 clockwork spring 16 being installed according to the said pipe volume of claim 1 type blackboard eraser.

3, according to the said pipe volume of claim 1 type blackboard eraser, it is characterized in that said casing 2 is provided with case lid 5, a chalk holder 6 and sliding panel mouth 11 are arranged on the case lid 5, and be furnished with sliding panel 12.

4, according to the said pipe volume of claim 1 type blackboard eraser, the structure that it is characterized in that said blackboard eraser 14 is that shell 30 links by spring 37 and core body, is provided with balance weight 35 at interval around the core body and between the shell 30.

5, according to claim 1,4 said pipe volume type blackboard erasers, the structure that it is characterized in that said core body is that blackboard eraser core 36 is to be attached on the blackboard eraser core pasting board 39.

6,, it is characterized in that said blackboard eraser core 36 and being connected of blackboard eraser core pasting board 39 are to adopt nylon hasp 38 according to the said pipe volume of claim 5 type blackboard eraser.

7,, it is characterized in that said shell 30 is provided with a Plastic net film 34 and a nail 40 according to claim 1,4 said pipe volume type blackboard erasers.