CN2251497Y

CN2251497Y - Dust-removing eraser

Info

Publication number: CN2251497Y
Application number: CN 96225674
Authority: CN
Inventors: 李德生
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-03-26
Filing date: 1996-03-26
Publication date: 1997-04-09
Anticipated expiration: 2006-03-26

Abstract

The utility model relates to a dust-removing eraser belonging to a teaching appliance in stationers goods, which is characterized in that the middle part of a dust containing hood which forms a sliding fit along two vertical guide wheel arms is provided with a longitudinal strip guide groove, the middle part of a vertical fit dust containing hood is provided with a longitudinal strip guide groove, the utility model is vertically penetrated with the guide groove, the tail surface of the blackboard eraser contacted with a board surface is connected with one end of a connecting rod, and the other end of the connecting rod is extended out of the dust containing hood to be linked with a handle; a dust-proof sponge strip with centre joints is arranged along the longitudinal strip guide groove of the dust containing hood, and a U-shaped end port of the dust containing hood is adhesively connected with a dust-proof rubber band contacted with the board surface. The appearing of the utility model plays an effective effect of dust-proof, and therefore, teachers and students can be safe from dust pollution, teaching and sanitary environment can be improved, and teachers and students are willing to accept the utility model.

Description

Aspirating blackboard is wiped

The utility model belongs to the teaching aid in the cultural goods, specifically a kind of improvement of blackboard eraser.

In teaching, blackboard eraser commonly used is that felt hair and wooden unit bonding (or iron sheet butting) are made, when this blackboard eraser is used to smear chalk writing on erasing the board, can cause dust from flying, especially more be subjected to the harm of dust pollution from the nearest teacher of blackboard (or book person), also can bring dust harzard in various degree simultaneously to the other staff in the classroom.It not only influences indoor hygienic conditions, and it is healthy to endanger indoor teachers and students, and how to alleviate dust pollution is the problem that relevant department very pays close attention to the harm of health always.

The purpose of this utility model is the shortcoming at above-mentioned existence, provides a kind of when the chalk writing of smearing on erasing the board, and can reduce the blackboard eraser of dust from flying.

Technology point of the present utility model is:

The two groups of rolling guide wheels of rub body (1) that are loaded on the upper and lower frame guide rail of blackboard (3) link to each other through guide wheel arm (2), appearance dust hood (4) middle part that is slidingly matched along two vertical idler arms (2) is provided with longitudinal strip guide groove (5), the blackboard eraser that vertically installs guide groove and contact with the plate face (8) tail surface connective pole (9) one ends, connecting rod (9) other end stretch appearance dust hood (4) and are connected to handle (11); Be provided with band centre joint dust-separation sponge bar (10) along holding the vertical guide groove of dust hood (5) inboard, hold dust hood (4) shape port and be bonded with and the contacted dust-separation rubber strip of plate face (12).

Appearance of the present utility model can be played the dirt effect that disappears effectively, makes Faculty and Students avoid dust pollution, has improved teaching and hygienic conditions, is subjected to the welcome of Faculty and Students.It is simple in structure, is easy to produce and install, and is easy to utilize.

Description of drawings:

Fig. 1 is the utility model and blackboard assembling schematic diagram.

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

From accompanying drawing as seen, rub body is by holding dust hood (4), dust-separation rubber strip (12), dust-separation sponge strip (10), handle (11), connecting rod (9), blackboard eraser (8), four (2 groups) rolling guide wheels (1), guide wheel arm formations such as (2); Be provided with in the bottom that holds dust hood (4) and let out dirt hole (7), in order to let out dirt; Dust-separation rubber strip (12) is the endless belt, cements in the periphery place that holds dust hood; The guide rail (3) that other establishes on the upper and lower frame of blackboard has fixing hole, so that guide rail is fixed on the upper and lower sheet frame; Conventional felt hair can not be adopted in the snag of blackboard eraser, and the hair shape bristle that decreases with antifriction.Be fixed in the guide wheel (1) on the guide wheel arm (2), can roll, realize holding dust hood (4) move left and right on the plate face along guide rail.

When needs are wiped certain part of examination blackboard, hold handle, make plate sassafras hair on the plate face left (or right) move, this moment, guide wheel rolled, blackboard eraser is manual, waits to move to desire and wipes the examination position, wipes examination up and down along the direction of dust-separation sponge strip, and the limit be close to left (or to the right) move, to realize that desire is wiped part to be wiped.Because rub body is to hold dust hood, dust-separation sponge strip, blackboard eraser, dust-separation rubber strip, constitute one and be bordering on totally enclosed appearance dirt chamber,, can only be stored in the chamber so dust is difficult for flying upward, and freely sink in the bottom, chamber, the appearance of gently shaking dust hood then laying dust is discharged along letting out the dirt aperture.

Among the figure 6 is the blackboard panel line.

Claims

1. an aspirating blackboard is wiped, has blackboard eraser, the two groups of rolling guide wheels of rub body (1) that it is characterized in that being loaded on the upper and lower frame guide rail of blackboard (3) link to each other through guide wheel arm (2), appearance dust hood (4) middle part that is slidingly matched along two vertical idler arms (2) is provided with longitudinal strip guide groove (5), the blackboard eraser that vertically installs guide groove and contact with the plate face (8) tail surface connective pole (9) one ends, connecting rod (9) other end stretch appearance dust hood (4) and are connected to handle (11); Be provided with band centre joint dust-separation sponge bar (10) along holding the vertical guide groove of dust hood (5) inboard, hold dust hood (4) shape port and be bonded with and the contacted dust-separation rubber strip of plate face (12).

2. wipe according to the described aspirating blackboard of claim 1, it is characterized in that being provided with and let out dirt hole (7), in order to let out dirt in the bottom that holds dust hood (4); Dust-separation rubber strip (12) is the endless belt, cements in the periphery place that holds dust hood; The guide rail (3) that other establishes on the upper and lower frame of blackboard has fixing hole.