CN2245541Y

CN2245541Y - No-dust eraser

Info

Publication number: CN2245541Y
Application number: CN 95238198
Authority: CN
Inventors: 周益安
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-12-11
Filing date: 1995-12-11
Publication date: 1997-01-22
Anticipated expiration: 2005-12-11

Abstract

The utility model provides a dustless blackboard eraser. Two hollow cavities are arranged between a body of wool felt and a casing, the rim of the casing is bonded with sealing wool strips, the chalk dust which is erased down is sealed in the hollow cavities through the sealing wool strips and is fallen in a groove of the lower part so that the chalk dust does not fly any longer. Four small rolling wool balls can prevent the blackboard from being badly scraped by the casing. The chalk dust in the body of the wool felt and the groove can be brushed by a dust-removing brush after the blackboard is erased, and the blackboard eraser can be caused to meet the next task by keeping the optimum state so that teachers do not need to hold the blackboard eraser to scrap everywhere.

Description

Dust-free black board eraser

The utility model relates to a kind of blackboard eraser.

In recent years, the problem that chalk dust disorderly flies when erasing the board in order to solve, many people have designed various modified blackboard erasers, but poor effect, manufacture craft is not simple and easy yet, in addition, removes mao problem of the ash that is stained with behind the intact blackboard of unresolved wiping.

The purpose of this utility model is to solve the problem that chalk dust disorderly flies when erasing the board, and solves the problem how to remove the ash on mao sticking body behind the blackboard of having wiped.

The utility model is achieved in that and constitutes two cavitys between the shell of blackboard eraser and the sticking body itself that a groove is respectively arranged in each chamber, and shell edge posts wool top, is used for sealing chalk dust, and chalk dust is no longer disorderly flown; One of the dust removal brush of adorning on the shell is columniform, can roll, because electrostatic effect can be removed the ash that hair is stained with.Can safeguard the dais health, prolong the service life of blackboard.Little ball top on four angles of outer casing bottom can roll on blackboard with blackboard eraser, prevents that shell from scratching blackboard.

Introduce the utility model in detail below in conjunction with accompanying drawing.

Fig. 1 is the Facad structure figure of blackboard eraser;

Fig. 2 is the appended dust removal brush structure chart of blackboard eraser;

Fig. 3 is the little spin structure chart of blackboard eraser;

Fig. 4 is the blackboard eraser sectional structure chart.

With reference to accompanying drawing, blackboard eraser is by the sticking body (1) of hair, shell (2), and cavity (3), groove (4), seal weatherstrip (5), little ball top (6) and dust removal brush (7) are formed.When erasing the board, the sticking body of hair (1) contacts with blackboard, letter written with chalk is wiped, under the effect of sealing strip (5), ash is close in two cavitys (3) by envelope, and falls in the groove (4), when erasing the board, bead (6) on four angles of outer casing bottom rolls on blackboard with blackboard eraser by main shaft (11), prevents that shell (2) from scratching blackboard.After having wiped blackboard, take off dust removal brush (7), hold handle (9), with cylindrical thorn roll (8) several down in the rollback that comes up of sticking (1) face of hair, remove the ash that unhairing is stained with, use flat hairbrush (10) to brush away ash in the groove again.

Claims

1, a kind of dust-free black board eraser is made up of the sticking body of hair, shell, dust removal brush, it is characterized in that: constitute two cavitys (3) between shell (2) and the sticking body (1), a groove (4) is respectively arranged in each cavity, respectively there is a little ball top (6) at four angles of outer casing bottom, cover top portion is equipped with a dust removal brush (7), and shell edge posts wool top (5).

2, blackboard eraser according to claim 1 is characterized in that: the dust removal brush on the shell is two brush, and one is that rotatable cylindrical thorn rolls (8), and the other end is the curved flat hairbrush (10) of band.