CN2301333Y

CN2301333Y - Dustless blackboard eraser

Info

Publication number: CN2301333Y
Application number: CN 97227115
Authority: CN
Inventors: 马广惠
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-09-24
Filing date: 1997-09-24
Publication date: 1998-12-23
Anticipated expiration: 2007-09-24

Abstract

The utility model relates to a dustless blackboard eraser which can prevent dust from polluting environment. The utility model is characterized in that a rolling eraser body is arranged at the inner part of a box type casing. Liquid can be contained in a cavity of the inner part of the eraser body for wetting the cotton felt on the surface of the eraser body. The inner side of a box body is provided with a dust scraping plate so that the dust on the surface of the eraser body can be scraped in a dust collecting groove body in the casing. The utility model has the advantage of simple structure, flexibility and durability and beautiful appearance. The utility model is an optimal tool for eliminating dust and removing chalk shaving.

Description

Dust-free black board eraser

The utility model belongs to school supply and stationery, relates in particular to a kind of blackboard eraser that cleans blackboard.

At present, normally used blackboard eraser is the felt that is stained with the erasable blackboard on a plank.The shortcoming of using this blackboard eraser maximum is that dust flies upward everywhere, serious environment pollution.In recent years, also the someone has invented the dust-free black board eraser of form various kinds, but eventually because of its complex structure, poor practicability, and reasons such as cost height are not popular in the city.

The purpose of this utility model is, designs a kind of new blackboard and wipes, can be with dust collection when erasing the board, thus prevent the pollution of dust effectively to environment.

The utility model is to realize like this, be equipped with a roller rub body in the inside of box-type shell, in the internal cavities of rub body, can be loaded with liquid, be used for the lip-deep cotton felt of moistening rub body, and be provided with dust scraping plate in the inboard of casing, the lip-deep dust of rub body can be scraped in the cell body of collecting dust in the housing.

Positive effect of the present utility model is:

1, the utility model is simple in structure, and is durable flexibly, is dirt, the gumming optimal instrument of pleasing correct that disappears.

2, the utility model appearance looks elegant, novelty, vary in color, can bring lucid and lively sensation to the user, improve the notice of Faculty and Students.

3, this product makes its energy expanded service life, because the prolongation reality in time limit has then reduced cost of use greatly because parts such as its rolling rub body can be changed.

4, because there is liquid the inside of rolling rub body, can make the cotton felt of rub body outer surface always keep moistening, when erasing the board, can control flying upward of dust effectively like this, play the dustless effect that erases the board veritably.

Description of drawings:

Fig. 1 schematic appearance of the present utility model

Fig. 2 bottom view of the present utility model

Fig. 3 cross-sectional schematic diagram of the present utility model

Fig. 4 the utility model sectional side view

Fig. 5 the utility model diagram of gears

Be described in detail embodiment of the present utility model below in conjunction with accompanying drawing:

Be provided with the rub body 2 of a rotatable round roll forming in the bottom of an empty van formula shell body 1, the inside of this rub body is a cavity 6, can contain liquid such as cleaning agent and water.At a plurality of spilling water apertures of the even branch of the outer wall of cavity, liquid can be penetrated on the cotton felt of rub body 2 outer surfaces gradually, make the moistening state of the total maintenance of cotton felt.Two ends at circle roller rub body are the complete closed state, and the one or both sides of its end face have to water hole 3, can stopple can be lived then by to the water hole liquid being joined in the cavity 6.Center in the rub body both ends of the surface respectively is provided with a minor axis, and its axle head is equipped with driving gear 4, and driving wheel drives conplane driven pulley 5, and driven pulley is connected with flywheel 9, connects scraper plate 10 by scraper arm 8 on flywheel shaft.When erasing the board, rub body is rolling friction on blackboard, powder is bonded on the cotton felt of rub body outer surface, the driving wheel at its two ends drives the flywheel rotation by driven pulley when rub body rolls, flywheel can make the scraper plate 10 of a side contact with rub body, and the powder on it is wiped off, collects 7 li of the interior collection powder boxes of shell body, be provided with powder box lid 11 in the outside of shell body 1, the powder of collecting can be toppled over out after opening.The surface of shell body can be made the shape of gradient projection, the space when being suitable for holding blackboard eraser in the palm of the hand makes the people that good sensation be arranged.

Claims

1, a kind of dust-free black board eraser, comprise housing and cotton felt rub body, it is characterized in that: the rub body (2) that is provided with a rotatable round roll forming in the bottom of an empty van formula shell body (1), the rub body outer surface is cotton felt, center in the rub body both ends of the surface respectively is provided with a minor axis, its axle head is equipped with driving gear (4), driving wheel joins by driven pulley (5) and flywheel (9), on the axle of flywheel, connect scraper plate (10) by scraper arm (8), be provided with collection powder box (7) in shell body, the outside of shell body (1) is provided with powder box lid (11).

2, blackboard eraser according to claim 1, it is characterized in that: its inside of rotatable rub body (2) is a cavity (6), can fill liquid, at a plurality of spilling water apertures of the even branch of the outer wall of cavity, make the liquid porous to the cotton felt of rub body (2) outer surface, two ends at circle roller rub body are the complete closed state, have to water hole (3) at its end face.

3, blackboard eraser according to claim 1 and 2 is characterized in that: the shape that the surface of shell body (1) can be made the gradient projection.