CN2136752Y

CN2136752Y - Blackboard eraser with dust catcher

Info

Publication number: CN2136752Y
Application number: CN 92235087
Authority: CN
Inventors: 谢光明
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-10-17
Filing date: 1992-10-17
Publication date: 1993-06-23
Anticipated expiration: 2002-10-17

Abstract

The utility model relates to a blackboard eraser with a dust catcher, comprising a brush cover and a brush body, wherein, the brush cover is clamped at the back side of the brush body and can be separated, three slot openings are arranged in the brush body, the inner part of the middle slot opening is provided with a felt block whose back side is a metal frame board whose both sides are provided with multiple small gears, each inner part of the slot openings which are on the both ends of the brush body is fixed with a rotating shaft whose both ends are provided with rolling wheels, and a brush studded with hard bristle is arranged between the two rolling wheels. When the utility model is used, static electricity generated by friction from the bristle on a blackboard is utilized to catch chalk dust erased by the felt block and the chalk dust is stored in the slot openings on the both ends. The utility model avoids chalk dust to fly when a blackboard is erased and facilitates the health of teachers and students.

Description

Blackboard eraser with dust catcher

The utility model relates to a kind of blackboard brush, particularly a kind of blackboard brush that can dust suction.

The blackboard brush that present most of schools use still is traditional felt brush, and during blackboard wiping, chalk dust flies upward everywhere, and the clothes of both having made dirty influences teachers and students' health again; Multiple improved blackboard brush was arranged afterwards, but structure is complicated mostly, makes difficulty, effect is still undesirable.

The purpose of this utility model is in order to overcome the defective of above-mentioned blackboard brush, to provide a kind of simple in structure, making easily the dust-absorbing blackboard brush that pick-up performance is good.

The purpose of this utility model is achieved in that dust-absorbing blackboard brush is designed to brush to be covered and brush body two parts, and the brush lid is designed to back side jug, and there is the rectangle cap of bayonet socket on both sides, and cap is placed on the back side of brush body, leans on the bayonet lock in the body wall outside to cooperate with cap; Design has three notches in the brush body, and the felt piece is installed in the notch of centre, respectively is fixed with a rotating shaft in the notch of both sides; The felt piece is spliced in one and with spring wire by a plurality of felt bars and is stuck in the metal deckle board, metal deckle board and median slot are designing a plurality of little teeth on contacted two edges, the felt piece is fixed on the median slot of brush body by these little teeth, and can push-and-pull metal deckle board, regulate the height that the felt piece stretches out brush finish, on the rotating shaft in the notch of both sides, the two ends design has scroll wheel, design has the bristle brush wheel that is being covered with hard mane between two rollers, felt piece during use, bristle brush wheel and scroll wheel contact simultaneously with blackboard, because hairbrush can produce static when rubbing on blackboard, can adsorb the chalk dust that felt is wiped, make it to be stored in the notch of brush body both sides the dust from flying when having avoided erasing the board, when dust more for a long time, can open brush lid dust is outwelled.

Advantage of the present utility model is: simple in structure, make easily, because all there is hairbrush the brush body both sides, when blackboard brush is made back and forth movement on blackboard surface, dust can suck in the notch of both sides, the left and right sides respectively, avoided chalk dust to fly upward everywhere, alleviated pollution, helped particularly teacher healthy of teachers and students environment.

Introduce an embodiment of the present utility model below in conjunction with accompanying drawing: on the preprepared mould, stamp out a handled brush lid (1) with plastics, with the brush body that three notches are arranged (2), in the notch on brush body (2) both sides, each axial restraint has a rotating shaft (3), in the design of the two ends of rotating shaft (3) scroll wheel (4) is arranged, design has the bristle brush wheel (5) that is covered with hard mane between two scroll wheels (4), design has felt piece (6) in the median slot of brush body (2), felt piece (6) is spliced by a plurality of felt bars and is stuck in the metal brush board (7) with spring wire, metal brush board (7) has a plurality of little teeth (8) with the design of notch edges contact position, felt is fixed in the median slot of brush body (2) by little tooth (8), and can push-and-pull metallic plate (7), reach and regulate the purpose that the felt face stretches out the brush finish height.To brush at last and cover the back side that is clamped on brush body (2) by its bayonet socket and bayonet lock, just become dust-absorbing blackboard brush.As long as hold the handle at brush lid (1) back side during use, felt, hairbrush, scroll wheel are acted on simultaneously make back and forth movement on the blackboard surface, chalk dust will suck in the notch of dress hairbrush, when dust more for a long time, just can outwell as long as open brush lid (1) dust, close the lid then, continue available.

Claims

1, a kind of dust-absorbing blackboard brush is made up of brush lid, brush body, it is characterized in that the brush lid is to be stuck in the brush body back side, can separate; Design has three notches in the brush body, the felt piece is installed in the notch of centre, in the notch of both sides, respectively be fixed with rotating shaft, the two ends design of rotating shaft has scroll wheel, be covered with the hairbrush that hard mane is formed between the scroll wheel, utilize the fricative static of mane and blackboard during use, adsorb in chalk dust of wiping by the felt piece and the notch that is stored in the both sides.

2, dust-absorbing blackboard brush according to claim 1, it is characterized in that the felt piece in the median slot is combined into by a plurality of felt bars, its back side is stuck in the metal deckle board with spring wire, design has a plurality of little teeth on metal deckle board and the face that notched wall contacts, by these little teeth with in the notch of felt piece in the middle of being fixed on, but and push-and-pull metal deckle board regulate felt and stretch out the height of brush finish.