CN2132632Y

CN2132632Y - Rolling no-dust eraser

Info

Publication number: CN2132632Y
Application number: CN 92220900
Authority: CN
Inventors: 山立
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-09-28
Filing date: 1992-09-28
Publication date: 1993-05-12
Anticipated expiration: 2002-09-28

Abstract

The utility model relates to a rolling no-dust blackboard eraser, adopting two rolling erasing bodies, a fixed erasing body is arranged between the two rolling erasing bodies, and a brush and a dust collecting groove are arranged in the casing body of the blackboard eraser. The rolling no-dust blackboard eraser can both erase and stick dust to avoid chalk dust to fly when in use. The utility model has the advantages of high dust erasing rate, simple structure and easy fabrication, and hands are not easy to be dirtied.

Description

Rolling no-dust eraser

The utility model belongs to the improvement of dust-free black board eraser structure.

Existing dust-free black board eraser have the deashing rate low, still have and fly upward dust, and rub body outside is stained with shortcomings such as ash easily, its reason is the rub body unreasonable structure.The purpose of this utility model designs a kind of roll-type dust-free black board eraser exactly, to improve the deashing rate, avoids dust from flying, and can keep the sanitation and hygiene of blackboard eraser.

Designed dust-free black board eraser is characterized by, the rub body that two roller bearing shapes are arranged, be installed in parallel on the rub body fixed mount, the one fixedly rub body that can not rotate in parallel is arranged between these two rub bodies, an equivalent length and a parallel brush plate are with it respectively arranged above two rub bodies that can rotate, the hairbrush of brush plate contacts with the rub body of its below, rub body axially between rub body and the rub body, the cross section is arranged at the top between rub body and the fixed mount is " Y " shape or " V " shape ash collection slot, one lid energy upper shield is being arranged above this integral body on fixed mount, form airtight ash collecting box and become the housing of blackboard eraser, top or sidepiece at box body have air outlet slit, can fixedly open a slit vertically on the rub body for making better effects if.

Accompanying drawing 1 is the structural representation of designed roll-type dust-free black board eraser, and 1 is the roll-type rub body that can rotate among the figure, and 2 are fixing rub body, and 3 is the slit, and 4 is the rub body fixed mount, and 5 is brush plate, and 6 is " Y " shape ash collection slot, and 7 is " V " shape ash collection slot, and 8 is lid.The rotation of roll-type rub body can be that (with respect to axle) rub body itself rotates, and also can be to rotate with axle, and fixedly rub body can be fixed on the fixed mount, and its cross section can be circular, also can be square or triangle; The material of rub body can be with felt or nylon etc., and brush plate can be contained on the fixed mount, also can be contained on the lid; And the upper shield of lid on fixed mount can adopt the structure of button or slotting formula, is slotting formula structure in the accompanying drawing.

The use of the roll-type dust-free black board eraser that the utility model is designed is, the housing of hand-held blackboard eraser promotes on blackboard, and the person's handwriting of chalk has been stained with the part dust through first rolling rub body, after fixing rub body warp, person's handwriting is then cleaned, and the dust of wiping then is stained with by second rolling rub body; After being stained with the dust walked and entering ash collecting box, brushed, accumulate in the ash collection slot by hairbrush with the rub body that rolls; Because the moving around of blackboard eraser causes the negative pressure in the ash collecting box, can make the part dust enter ash collecting box through the slit on the fixing rub body with air-flow; More for a long time, can open the lid and pour out in the dust accumulation.Designed roll-type dust-free black board eraser has deashing rate height, do not have fly upward dust, be difficult for dirty hand and simple in structure, make easily.

Claims

1, a kind of dust-free black board eraser, rub body and housing are arranged, it is characterized in that: have two roller bearing shape rub bodies that can rotate to be installed in parallel on the rub body fixed mount, the one fixedly rub body that can not rotate in parallel is arranged between these two rub bodies, an equivalent length and a parallel brush plate are with it respectively arranged above the rub body that can rotate, the hairbrush of brush plate contacts with the rub body of its below, rub body axially between rub body and the rub body, the cross section is arranged at the top between rub body and the fixed mount is " Y " shape or " V " shape ash collection slot, one lid energy upper shield is being arranged above this integral body on fixed mount, form airtight ash collecting box, become the housing of blackboard eraser.

2, blackboard eraser according to claim 1 is characterized in that: top or sidepiece at housing have air outlet slit, at fixing rub body one slit are arranged vertically.