KR20040043619A - Electromotion Board Eraser - Google Patents

Abstract

PURPOSE: Provided is an electric blackboard eraser to effectively absorb a chalk dust existing on a blackboard to minimize any damage to an educator and a student by the chalk dust as scattered. CONSTITUTION: The electric blackboard eraser comprises an upper part casing(10) with an operation switch(11) at one side, a space portion(12) inside, and a power supply portion(13); an absorption motor(M) connected to the power supply portion(13) to be rotated by operation of the operation switch(11); an absorption impeller(14) being axially connected to the absorption motor(M) to rotate; a dust collecting box(20) with a chalk drop portion(22) in which a chalk dust puts at one side of the lower part and with a dust removing chamber(21) to remove the chalk dust as put inside, the dust collecting box(20) being separated from or attached to one side of the upper part casing(10); a check valve(22a) placed in the chalk drop portion(22); a lower part casing(30) which is engaged into the lower part of the upper part casing(10), having a receiving chamber(31) inside, a chalk absorption hole formed at one side of the lower part, and a chalk outlet portion(33) to supply the chalk powder into the dust collecting box(20) at one side of the upper part; a driving motor placed in the receiving chamber(31) and operating; a pressure member(34) attached to the bottom of the lower part casing(30); and a chalk duster member(40) being connected with the driving motor and including one side of a circumference surface formed to be projected in the chalk absorption hole so that the chalk powder existing on the board is dusted off and absorbed.

Description

Electric Blackboard Eraser {Electromotion Board Eraser}

The present invention relates to an electric blackboard eraser that can effectively remove the chalk powder on the blackboard, more specifically, the chalk powder that can be generated while the education contents written on the blackboard through the chalk to perform a new writing. It is invented to prevent the damages of the educator and the trainees in advance.

Generally, a blackboard, also called a blackboard, is a wide board painted with chalk so that the writing can be performed with chalk, and the blackboard can be used to deliver the contents of the education to the trainees.

On the other hand, the handwriting of the blackboard after the learning is completely erased through the blackboard eraser so that the new educational contents can be written.

The blackboard eraser to erase the handwriting is made of a fiber material to effectively erase the chalk powder on the board, a thick paper is attached to the upper portion of the fiber material is not easily deformed, the inside is filled with cotton.

Therefore, the existing educational contents that were written on the blackboard through chalk can be effectively erased through the blackboard eraser configured as described above, so that the new educational contents could be made.

The conventional blackboard eraser constructed as described above has been used for a long time in the educational field because it is light in weight and can be manufactured at low cost, but it can cause the scattering of chalk powder during the erasing process, which seriously affects the health of educators and trainees. There were problems such as threats.

These chalk powders are a problem because scattering chalk powders can irritate the mucous membranes of the nose, which can be very harmful to people with allergic sensitivities.

That is, the fiber material and cotton constituting the blackboard eraser has a problem such that it can absorb only a small amount of chalk powder among the erased chalk powder, causing damage caused by unabsorbed chalk powder.

In addition, there was a problem in that the blackboard eraser was used in the process of erasing the educational content, the chalk powder is buried, and if the reuse is necessary, the process of removing the chalk powder may require inconvenience.

In addition, the fiber material and paper constituting the blackboard eraser can be easily damaged when the use is made for a long time, and may result in additional purchase costs. If the spare blackboard eraser is not provided, the contents of the education written on the blackboard There was also a discontinuity such that the learning effect could be significantly reduced.

Therefore, an object of the present invention is to solve the problems as described above to prevent the damage caused by the chalk powder in advance, as well as to enable the ease of use and continuous use.

An object of the present invention is to provide an electric blackboard eraser that can effectively minimize the damage of the educator and trainees by the chalk powder scattered by effectively adsorbing the chalk powder on the blackboard.

Another object of the present invention is to provide an electric blackboard eraser that can easily handle the adsorbed chalk powder to prevent inconvenience caused by reuse.

Still another object of the present invention is to provide an electric blackboard eraser capable of minimizing damage and damage caused by long-term use, thereby preventing the occurrence of costs and the deterioration of learning effects caused by additional purchase.

1 is a cross-sectional view showing the overall configuration of the present invention electric blackboard eraser.

Figure 2 is a side view showing the cut-out part of the connection state of the chalk curling member and the driving motor installed in the present invention.

3 is a plan view showing the overall shape of the present invention.

Explanation of symbols on the main parts of the drawings

10-Upper casing 11-Control switch

12-space 13-power supply

14-Suction Impeller 20-Dust Collector

21-Dust Collector 22-Chalk Input

22a-check valve 23-crimping member

30-lower casing 31-storage compartment

32-Chalk Suction Hole 40-Chalk Hairless

M-Suction motor M '-Drive motor

The present invention for achieving the above object, the operation switch is provided on one side of the upper, and the inner space is formed in the upper casing provided with a power supply;

A suction motor associated with a power supply unit to be rotated by an operation of the operation switch;

A suction impeller axially coupled to the suction motor and rotating;

A dust collector installed detachably on one side of the upper casing, a chalk input part into which chalk powder is input, and a dust collecting chamber configured to collect chalk powder into the lower one side;

A check valve installed at the chalk input part;

A lower casing which is fastened to a lower portion of the upper casing, a storage chamber is formed therein, a chalk suction hole is formed at a lower side thereof, and a chalk discharge unit is formed at the upper side to supply chalk powder by dust collection;

A drive motor installed in the storage chamber and movable;

A pressing member attached to the bottom of the lower casing;

Connected to the drive motor, the outer peripheral surface is achieved by consisting of a chalk furry member installed to protrude in the chalk adsorption hole so that the chalk dust on the board to absorb the chalk.

Therefore, when operating the operation switch provided in the upper casing and the present invention is in contact with the blackboard with chalk powder, the chalk hair member connected to the drive motor in the state in close contact with the blackboard through the pressing member to rotate the chalk powder Adsorption.

Then, the adsorbed chalk powder is sequentially passed through the opening and the chalk input portion formed in the lower casing through the suction impeller connected to the suction motor is supplied to the dust collector, the dust collecting dust of a predetermined amount of dust collected in the upper casing It removes from the inside and discharges the internal chalk powder to the outside.

Therefore, it is possible to prevent the scattering of chalk powder that can threaten the health of educators and trainees.

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

Figure 1 is a cross-sectional view showing the overall configuration of the electric blackboard eraser of the present invention, the chalk whisk member for adsorbing the chalk powder buried on the blackboard is installed in the lower casing, the chalk dust adsorbed through the chalk whisk member A suction impeller for supplying to the dust collector is installed in the upper casing, and the chalk hair member and the motor for rotating the suction impeller are shown in the present invention.

Figure 2 is a side view showing the state of the connection between the chalk furnishing member and the driving motor installed in the present invention partially cut, the chalk furnishing member for absorbing the chalk dust buried on the blackboard and the driving motor for rotating the chalk furnishing member The connection is showing.

Figure 3 is a plan view showing the overall shape of the present invention, the suction impeller and the suction impeller for supplying by collecting the dust collected in the chalk casing inside the upper casing provided with the operation switch on the upper one side; A suction motor for rotating is installed, and a lower casing having an operation switch for operating an inner chalk hair member is installed at a lower portion of the upper casing.

That is, as shown in FIGS. 1 to 3, a space portion 12 having a predetermined size is formed inside the upper casing 10 having the operation switch 11 on one side thereof, and the space portion 12 is formed. ) Is provided with a power supply unit 13 for generating a current.

The power supply unit 13 is a means for generating a current, as shown in the drawing, a battery which is a primary battery may be used as the power supply unit 13, in addition to the configuration that the external current is supplied through the wire Can be.

That is, an educational place equipped with a connection terminal on a wall or the like may be used by connecting an electric wire to the connection terminal, and a battery may be stored inside the upper casing 10 at an education location where the connection terminal is not provided or where the terminal is used for a short time. Will be used.

In addition, one side of the power supply unit 13 is installed to be connected to the suction motor (M) rotated by the on / off operation of the operation switch 11, the suction motor (M) is a suction impeller (a multi-wing blower) 14) is axially coupled.

In addition, on one side of the upper casing 10, the chalk input portion 22 into which the chalk powder buried on the blackboard is input is formed at the lower side, and the dust collecting chamber 21 is formed to collect the chalk powder introduced therein. The box 20 is installed detachably.

At this time, the chalk input portion 22 is provided with a check valve 22a, the dust collecting chamber 21, the filter material so as to block the collected chalk powder supplied to the suction impeller 14 installed in the upper casing (10). The filter unit 23 is attached to the 24, the side of the upper casing 10 in which the dust collecting box 20 is installed, the transfer hole 15 to allow the air discharged from the dust collecting box 20 to pass through. ) Is formed.

Therefore, the chalk dust collected in the dust collecting box 20 and the foreign matter adsorbed with the chalk powder are blocked by the filter medium 24 attached to the filter unit 23 so that only pure air is discharged to the upper casing 10. Will be.

On the other hand, a lower portion of the upper casing 10 configured as described above is formed with a storage chamber 31 having a predetermined size therein, a chalk suction hole 32 is formed on one side of the lower side, the dust collector 20 on the upper side The lower casing 30 in which the chalk discharge part 33 is formed is fastened so that the chalk powder can be supplied.

Then, the bottom surface of the lower casing 30 is attached to the pressing member so that the electric blackboard eraser (1) of the present invention in close contact with the blackboard.

The pressing member 34 may be used in various ways, but in the present invention is composed of a woven fabric paper.

Here, the fastening of the lower casing 30 having such a configuration, as shown in Figure 2, to form a fastening portion 16, the end of which is bent outward on the lower both sides of the upper casing 10, the lower casing 30 The end portion is formed to be assembled into the assembly portion 35 bent inward to be coupled to the fastening portion 16 is to be made to be fitted to each other.

In addition, the lower casing 30 may be configured as a single body in which a storage chamber 31 is formed. In addition, the upper body and the lower body having the lower and upper portions are open so that the storage chamber 31 is formed therein. It may be formed separately.

In addition, the storage chamber 31 formed in the lower casing 30 is provided with a driving motor M 'which is rotated in association with the power supply 13, and the inside of the driving motor M' is hollow. It is formed so that, one side of the outer circumference is provided with a chalk whisk member 40 protruding in the chalk suction hole 32 so as to absorb the chalk powder buried in the blackboard.

The chalk hair member 40 is wrapped around the brush member 40b capable of absorbing chalk powder on the cylindrical roller member 40a, belt and chain so as to be rotated in the same direction as the driving motor (M '). It is connected to the drive motor (M ') through a power transmission member 44 made of an element of.

That is, the driving motor (M ') and the chalk curling member 40 is connected to the finishing member 42 having a driving shaft 41 in the center is installed at both ends of the roller member (40a), the driving shaft ( 41) and the driving motor (M ') consists of being connected to the power transmission member 44 after the fleece 43 is installed, respectively.

In addition, the finishing member 42 is fixed in the lower casing 30 through a flange 46 having an elastic member 45 on the outer circumferential surface, and a chalk hair member between the flange 46 and the drive shaft 41. A plurality of bearings 47 are installed so that the 40 can be rotated along the drive motor M '.

At this time, the driving motor (M ') for driving the chalk curling member 40 may be controlled through the operation switch 11 provided in the upper casing (10), but the driving motor (M) in the lower casing (30) It is preferable that the operation switch 36 is separately provided to control ').

That is, a fastener (operation switch 36 for controlling the driving motor M ') and a substrate 36a connected to the power supply unit 13 may include fasteners formed of elements such as bolts and screws on one side of the upper casing 30. When assembled through the 37), it is possible to control the suction motor (M) and the driving motor (M ') according to the amount of chalk powder on the board, so that the power of the power supply 13 can be used efficiently. do.

Therefore, after assembling the electric blackboard eraser 1 configured as described above in order to operate the operation switch 11 or the drive switch 36 according to the amount of chalk buried on the blackboard, the operation switch 11 and The suction motor M and the driving motor M 'which are respectively connected to the drive switch 36 are rotated, and the suction impeller 14 and the chalk hair member 40 are rotated by this rotation.

Then, when the rotating chalk hair member 40 is in contact with the blackboard, the chalk powder buried in the blackboard in contact with the blackboard through the pressing member 34 attached to the lower casing 30, the chalk hair member ( 40 is separated from the blackboard by a brush member (40b) surrounding.

In addition, the chalk powder separated and separated by the brush member 40b is sequentially passed through the chalk discharge unit 33 and the chalk input unit 22 through the suction impeller 14 is rotated to the dust collector 20 Will be supplied.

Here, the backflow of chalk powder which may be generated in the process of adsorbing chalk powder through the rotation of the suction impeller 14 may be prevented through the check valve 22a installed in the chalk input part 22.

The check valve 22a is an elastic material made of a thin synthetic resin material and a rubber material having elasticity. In the normal state, the chalk input part 22 is sealed as shown in FIG. 1, but the suction impeller 14 is operated so that the suction force is applied. When open as shown in the imaginary line is to be able to suck the chalk powder into the dust collector (20).

When the suction force of the suction impeller 14 is removed again, the chalk input unit 22 is closed.

Accordingly, the dust collecting box 20 in which a predetermined amount of chalk powder is collected is removed from the upper casing 10, and the inner chalk powder is shaken and discharged from the trash can, and then remounted.

Therefore, through the electric blackboard eraser 1 of the present invention configured as described above it is possible to provide a pleasant educational environment to educators and trainees.

According to the configuration of the present invention as described above, the chalk powder is written on the blackboard is effectively absorbed through the chalk whisk member driven by the drive motor and then collected by the dust collector through the suction impeller rotated by the suction motor, the chalk powder It is possible to prevent the scattering of children in advance, thereby minimizing the damage that harms the health of educators and trainees.

In addition, since the dust collecting box in which the adsorbed chalk powder is collected is detachable and detachable, it is possible to easily handle the chalk powder to prevent inconvenience due to reuse.

In addition, by controlling the suction motor and the driving motor separately according to the amount of chalk powder on the board, it is possible to use for a long time, it is possible to minimize the occurrence of costs through the efficient use of current.

Therefore, it is a very useful invention that can contribute to the profit generation of the producer through the improvement of the reliability of the product.

Claims (2)

An upper casing 10 having an operation switch 11 at an upper side thereof, and having a space 12 formed therein, and having a power supply unit 13; A suction motor (M) associated with the power supply unit (13) to be rotated by the operation of the operation switch (11); A suction impeller 14 axially coupled to the suction motor M to rotate; One side of the upper casing (10) is detachably installed, the lower one side is formed with a chalk input portion 22 is introduced with chalk powder, there is formed a dust collecting chamber (21) for collecting the dust collected therein A dust collector 20; A check valve 22a installed at the chalk input part 22; It is fastened to the lower portion of the upper casing 10, the interior of the storage chamber 31 is formed, the lower side of the chalk suction hole 32 is formed, the upper one side to supply the chalk powder to the dust collector (20) A lower casing 30 having a chalk discharge portion 33 formed thereon; A driving motor (M ') installed and operated in the storage chamber (31); A pressing member 34 attached to the bottom of the lower casing 30; The electric motor is connected to the drive motor (M '), characterized in that the outer circumferential surface is composed of a chalk furry member 40 protruded into the chalk adsorption hole 32 so that the chalk dust buried on the blackboard can be adsorbed Blackboard Eraser. The method of claim 1, wherein the filter unit 23 is installed inside the dust collector 20 to filter the collected chalk powder is supplied to the suction impeller 14 installed in the upper casing (10). Electric blackboard eraser.