KR20000000465U - Blackboard eraser with chalk dust remover. - Google Patents

Abstract

The present invention relates to a blackboard eraser having a chalk powder removing device that can be easily removed without scattering chalk powder when the blackboard is erased using a blackboard eraser for erasing letters written in chalk on the blackboard.

In constructing a blackboard eraser (10) for removing the chalk on the blackboard;

The blackboard eraser 10 of the present invention is;

A case 11 having a rectangular box body having an empty inside;

One side of the case 11 includes a connection port 13 formed to be connected to the vacuum cleaner or the vacuum means 12;

A removal plate 15 fixed to the upper surface of the case 11 with a woven cloth or a brush 14 as a means for erasing chalk powder written on a blackboard;

The removal plate 15 is characterized in that it comprises a plurality of dust collecting holes (18, 19) that can be collected in the case 11 of the chalk powder is not scattered when removed by the brush (14). do.

Description

Blackboard eraser with chalk dust remover.

The present invention relates to a blackboard eraser having a chalk powder removing device. More specifically, in the process of erasing letters written with chalk on a blackboard with a blackboard eraser, the chalk powder is immediately removed so that there is no scatter of chalk powder. It is about.

A long time ago, the chalk writing on a blackboard was erased with a blackboard eraser, and the worker removed two pieces of chalk by facing the two erasers with both hands.

As in the case of the above, it is possible to prevent the difficulty of breathing and the contamination of the worker's hands and clothes as well as the surrounding goods caused by chalk powder being scattered and immediately flowing into the worker's respiratory tract when meeting the handheld eraser with both hands as mentioned above. In order to remove the chalk powder on the board eraser mechanically, a device has been devised.

Looking at such an apparatus, as shown in FIG. 4, a case 1 having a schematic box shape is provided, and a driving means 2 composed of a motor, an eccentric, and the like is installed on an inner bottom surface of the case 1. .

Above the drive means (2) is fixed to the plate-shaped actuator (3) to move continuously in the left, right direction (or front, rear direction) to configure the blackboard eraser chalk powder removing apparatus (5).

The operation of the blackboard eraser chalk powder removal device (5) of the configuration as described above is operated after the operator erases the handwriting written on the blackboard, holding the blackboard eraser (4) with the chalk powder by hand and inserting it into the case (1). It is in close contact with the upper surface of the ruler (3).

Then, by operating the blackboard eraser chalk powder removal device (5) is to remove the chalk powder on the blackboard eraser that the operator (3) while the operator moves in the left, right direction.

When removing the chalk dust on the board eraser as described above, because the board eraser is located in the case, the scattering of the chalk powder can be prevented to some extent, but perfect emergency prevention is impossible.

In particular, chalk powder is intensively buried in the hand of the worker holding the blackboard eraser so as not to move with the operator, which causes unsanitary problems.

In the present invention to solve the problems as described above by using a blackboard eraser to erase the chalk written on the blackboard with a blackboard eraser at the same time chalk powder is sucked by the vacuum means to prevent the scattering of chalk powder worker The purpose is to prevent the contamination of the surrounding objects as well as to prevent the contamination of chalk in the hands of.

To this end, the present invention is characterized in that the erased chalk is directly sucked by using a blackboard eraser connected to a conventional vacuum cleaner or a separate vacuum device to prevent the scattering of chalk powder.

1 is a perspective view of a blackboard eraser having a device for removing chalk powder applied to the technology of the present invention.

FIG. 2 is a cross-sectional view of the blackboard eraser having the apparatus for removing chalk powder taken along the line A-A of FIG.

3 is a cross-sectional view of the blackboard eraser having a chalk powder removing apparatus taken along the line B-B of FIG.

Figure 4 is a schematic cross-sectional view of the apparatus for removing chalk eraser applied to the prior art.

* Description of the symbols used in the main parts of the drawings *

10; Blackboard eraser

11; case

12; Vacuum

13; Connection port

15; Removal plate

18,19; Dust collection

Hereinafter, with reference to the accompanying drawings will be described the configuration and operation of the present invention for achieving the above object.

1 is a perspective view of a blackboard eraser chalk powder removing apparatus to which the technique of the present invention is applied, FIG. 2 is a cross-sectional view of a blackboard eraser chalk powder removing apparatus taken along line A-A of FIG. 1, and FIG. 3 is a line B-B of FIG. It is described together with a cross-sectional view of the blackboard eraser chalk powder removing device taken along the way.

Chalkboard eraser (10) having a chalk powder removing device of the present invention;

The case 11 is formed of a rectangular box body having an empty inside, and one side of the case 11 integrally forms a connection port 13 which can be connected to a vacuum cleaner or a vacuum means 12.

The connection port 13 formed on the side of the case 11 is preferably formed near the bottom surface of the case 11 to facilitate the discharge of the chalk powder to be removed.

On the upper surface of the case 11, a removal plate 15 having a conventional woven cloth or a brush 14 (hereinafter referred to as a brush) is fixed as a means for erasing chalk powder written on a blackboard.

The removal plate 15 includes a plurality of dust collecting holes 18 and 19 at equal intervals so that the chalk powder written on the blackboard can be collected into the case 11 without being scattered when removed by the brush 14. To form.

The operation of the present invention configured as described above;

If you want to remove the chalk on the blackboard using the blackboard eraser 10, the connection port 13 and vacuum means 12 formed integrally on the case 11 side of the blackboard eraser 10 is connected To operate the vacuum means (12).

In this state, when the chalk powder written on the blackboard is removed using the blackboard eraser 10, the brush 14 provided on the removal plate 15 of the blackboard eraser 10 removes the chalk powder.

Then, the chalk powder which is removed by the suction force of the vacuum means 12 connected to the case 11 is collected in the case 11 directly through the dust collectors 18 and 19, and the chalk powder on the case 11 is vacuum means. Inhaled by (12).

The present invention as described above by using the blackboard eraser 10 in conjunction with the vacuum means 11, the chalk powder removed by the blackboard eraser 10 is directly sucked into the vacuum means 12 to prevent the chalk powder from scattering. Will be.

The present invention as described above, by removing the chalk powder removed by the blackboard eraser with a vacuum means to prevent the scattering of the chalk powder to prevent surrounding pollution, while contaminating the worker's hands or solving problems such as respiratory disorders while removing the chalk powder It can have an effect such as to facilitate.

Claims (1)

In constructing a blackboard eraser (10) for removing the chalk on the blackboard; The blackboard eraser 10 of the present invention is; A case 11 having a rectangular box body having an empty inside; One side of the case 11 includes a connection port 13 formed to be connected to the vacuum cleaner or the vacuum means 12; A removal plate 15 fixed to the upper surface of the case 11 with a woven cloth or a brush 14 as a means for erasing chalk powder written on a blackboard; The removal plate 15 is characterized in that it comprises a plurality of dust collecting holes (18, 19) that can be collected in the case 11 of the chalk powder is not scattered when removed by the brush (14). Blackboard eraser with a chalk powder remover.