KR20020076407A - Black board with eraser - Google Patents

Abstract

PURPOSE: Provided is a blackboard with an eraser included which quickly erases characters written on the blackboard and prevents chalk dusts from being flown so that it eliminates inconvenience caused by flying chalk dusts. CONSTITUTION: The blackboard with the eraser included comprises the parts of: a machine room(4) which includes a curve part, a frame(2) and a switch door; a board(6) which is wound in an endless style through both rollers(5,5'); a support sheet which is placed inside the board; a motor which is placed in the machine room to rotate one rollers; a belt which connects one roller and the motor; an erase roller(10) which is vertically placed at the machine room to touch with the board; a belt which connects the erase roller and the motor; a switch which is placed at the lower edge of the frame to control the motor; and a dust receiver(13) which is placed under the machine room.

Description

Blackboard with eraser {Black board with eraser}

The present invention relates to a blackboard erasing apparatus that can be quickly erased without generating chalk powder.

In general, the blackboard for chalk is made of a flat plate and fixed by the installation space is limited to be erased from time to time, and when there is a problem such as the occurrence of dust such as chalk powder, and eraser from time to time.

The present invention has been made to solve the above-mentioned conventional problems, the object of the present invention is to provide a blackboard equipped with a erasing device that can be quickly erased without using chalk powder and can effectively use the use area There is.

The board equipped with the erasing device of the present invention for achieving the above object is installed in an endless manner through an opposite roller to be rotated by a motor, the plate body is installed in contact with one side of the plate body is rotated in the same direction as the plate body And, characterized in that the configuration including a control plate for controlling the rotation of the plate, and the plate body and the removal roller is installed below the removal roller.

In the present invention having such a configuration, the plate body and the erase roller are rotated in the same direction by the motor so that the erase roller quickly erases the letters on the plate, and the chalk powder generated at this time is collected by the dust tray below, The erased new plate faces are unfolded continuously.

1 is a sectional front view of the present invention;

2 is a plan sectional view of FIG. 1;

3 is a side cross-sectional view of FIG.

Figure 4 is a plan cross-sectional view of the erase roller according to the invention.

* Description of the symbols for the main parts of the drawings *

1: bend 2: frame

3: door 4: machine room

5,5 ': roller 6: plate body

7: support plate 8: motor

9,11 Belt 10: Eject roller

12: Switch 13: Dust Collector

14: electromagnet 15: guide roller

16: bearing 17: mounting wing

18: niche

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a front sectional view of the present invention, FIG. 2 is a plan sectional view of FIG. 1, FIG. 3 is a side sectional view of FIG. 1, and FIG. 4 is a plan sectional view of a removal roller according to the present invention.

As shown, the blackboard equipped with the erasing device of the present invention has a frame 2 having a bent portion 1 formed at a lower end thereof, a machine room 4 provided with an opening and closing door 3 at one side of the frame, and both sides of the frame. Roller (5) (5 ') rotatably installed vertically, plate body (6) wound in an endless manner through both rollers (5) (5'), support plate (7) installed in the plate body, said one roller Motor 8 installed in machine room 4 to rotate 5, belt 9 connecting roller 5 and motor 8, perpendicular to machine room 4 in contact with the plate 6 The erase roller 10 to be installed, the belt 11 connecting the erase roller 10 and the motor 8, the switch 12 installed at the lower end of the frame to control the motor 8, the machine room 4 It is a configuration including a dust collecting 13 that is detachably installed below.

In addition, when the plate 6 is made of metal, an electromagnet 14 is provided on the support plate 7, and the electromagnet 14 has a switch configuration which is turned on and off as opposed to on and off of the motor 8.

In addition, the plate 6 may be formed of a rubber magnetic material, in which case the support plate 7 is made of a metal material.

The removal roller 10, as shown in Figure 4, the gripping piece 10a is installed on the outer peripheral surface of the roller at a predetermined interval, the discharge passage (10b) is formed between the gripping piece and the gripping piece, the gripping piece (10a) A structure in which the eraser 10c, such as a sponge or a nonwoven fabric, is detachable is also possible.

In addition, the switch 12 is preferably provided on both sides and formed long.

Reference numeral 15 is a guide roller for supporting the plate 6, 16 is a bearing for supporting the roller (5) (5 ') and the erase roller 10, 17 is an installation for installing the frame (2) on the wall It is a wing, and 18 is a gap that allows chalk to fall off.

The effect of this invention of the said structure is demonstrated.

The writing is written using chalk on the plate 6, the plate 6 is supported by the guide roller 15 and the support plate 7 to maintain a flat state, when the plate is a metal plate electromagnet 14 It is possible to be in close contact with the support plate (7), and when the plate body is formed of a rubber magnetic material, it is also possible to be in close contact with the metal support plate (7), thereby preventing the phenomenon of lifting.

On the other hand, in the case of erasing letters on the plate body 6, when the switch 12 is pressed, the motor 8 is operated and the power of the electromagnet 14 is cut off. 5) and the erase roller 10 are rotated in the same direction at the same time.

As a result, the plate 6 is rotated and the vertically written letters of the plate contacting the erase roller 10 are simultaneously erased.

The chalk powder generated in the process of being erased by the eraser 10c of the eraser roller 10 is discharged to the discharge passage 10b formed between the eraser and the eraser and collected downward in the dust collecting unit 13.

In addition, the chalk powder generated during the writing process falls into the gap 18 formed at the bottom of the plate, and if it is determined that a certain amount is collected, it is collected in the dust tray 13 using a separately prepared tool.

When the erase operation is completed and the switch 12 is turned off, the rotation of the plate body 6 is stopped, and at the same time, the electromagnet 14 is turned on to closely close the stopped plate body.

If it is determined that the eraser 10c of the eraser 10 is worn out, the door 3 of the machine chamber 4 is opened and replaced with a new one, and if the dust collector 13 is filled with chalk powder, the dust collector ( 13) Pull out to remove the collected chalk powder.

As described above, the blackboard to which the erasing device of the present invention is installed is installed in an endless manner through an opposing roller to be rotated by a motor, and is installed in contact with one side of the plate to rotate in the same direction as the plate, By a structure including a dust collecting plate installed below the erase roller, and a switch for controlling the rotation of the plate and the erase roller, the letters are quickly erased, so that the chalk powder does not fly when erased, the space of the plate body It can be used effectively.

Although the invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that modifications and variations can be made within the spirit and scope of the invention, and such modifications or changes will belong to the claims.

Claims (3)

Frame 2 having bent portion 1 and clearance 18 formed at the bottom, machine room 4 formed with opening and closing door 3 at one side of the frame, and rollers rotatably installed vertically on both sides of the frame ( 5) 5 ', a plate body 6 wound endlessly through both rollers 5 and 5', a support plate 7 installed in the plate body, and a machine room for rotating the one side roller 5 4, a motor (8) installed in one side, a belt (9) connecting the one side roller (5) and the motor (8), a removal roller (10) installed vertically in the machine room (4) to be in contact with the plate (6), A belt 11 connecting the erasing roller 10 and the motor 8, a switch 12 installed at a lower end of the frame to control the motor 8, and a detachably installed under the machine room 4. Blackboard attached to the eraser characterized in that the configuration comprising a dust collecting (13). The method of claim 1, wherein the electromagnet 14 is installed on the support plate 7 when the plate 6 is made of metal, the support plate 7 is made of metal when the plate 6 is formed of a rubber magnetic material, The electromagnet 14 is a blackboard equipped with a erasing device, characterized in that the switch configuration is turned on and off as opposed to the on and off of the motor (8). According to claim 1, wherein the removal roller 10, the gripping piece (10a) is provided on the outer peripheral surface of the roller at a predetermined interval, the discharge passage (10b) is formed between the gripping piece and the gripping piece, the gripping piece (10a) Blackboard attached to the eraser, characterized in that the structure through which the eraser (10c), such as sponge or non-woven fabric through the removable.