JP2009202343A - Blackboard with blackboard eraser and automatic erasing capability - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a blackboard equipped with a blackboard eraser and automatic erasing capability of simple configuration by low cost. <P>SOLUTION: The blackboard eraser comprises: a wiper unit 140 which includes a cylindrical wiper member extending in substantially parallel with one side end of a rectangular blackboard, a means which carries out the rotary drive of the wiper member around a cylinder shaft, and sliding components 142, 144 engaging with rail members 110, 120; and the rail members 110, 120 extending in a substantially vertical direction with the one end of the blackboard and freely slidably holding the sliding components 142, 144, wherein the cylindrical wiper member has projections of a plurality of lines extending from the cylindrical surface to a radiation direction and extending in a substantially parallel direction with the cylinder shaft while carrying out the rotary drive of the wiper member, the sliding component 142, 144 are made to slide on the rail members 110, 120, and the wiper unit 140 is moved in a substantially vertical direction with the one side end of the blackboard to wipe off deposits of the blackboard surface. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a blackboard equipped with a blackboard erasing device and an automatic erasing function, and more particularly to a blackboard erasing device capable of performing erasing in a dry manner and a blackboard equipped with an automatic erasing function.

  Conventionally, in order to erase writing on the blackboard by chalk or the like, it has been common to wipe off the chalk powder adhering to the blackboard using a cloth blackboard eraser. After use, the chalk eraser is removed from the blackboard by applying it to a cleaner.

However, manually erasing a large blackboard using a blackboard eraser requires a lot of labor and has problems such as chalk dust scattering, and thus a device that automatically erases the blackboard has been introduced.
Patent Document 1 discloses an automatic erasing device installed along a side edge of a blackboard, which includes a rotatable erasing member composed of a brush, a sponge, and the like and a means for supplying cleaning liquid to the erasing member. A device for erasing is described (claims 1, 10, 13, etc.).
JP-A-11-123119

The blackboard automatic erasing apparatus described in Patent Document 1 performs wet erasing using a cleaning liquid, and has a tank (storage tank 201) for storing the cleaning liquid and a pump (cleaning liquid pump 203) for pumping the cleaning liquid up to the top of the blackboard. ) Is required. For this reason, the apparatus must be large, and considerable manufacturing costs, running costs, and maintenance costs are required.
In addition, when performing blackboard erasing in a wet manner, the blackboard needs to be dried quickly after the erasing operation.For this reason, if a heated cleaning solution is used or a dry air is blown, it is necessary to provide a heat source. In addition, the entire apparatus is further increased in size and cost.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a blackboard erasing apparatus having a simple configuration at low cost and a blackboard provided with an automatic erasing function.

  As a result of diligent research in view of the above problems, the present inventor automatically erases the blackboard using the wiper member extending in a direction substantially parallel to the side edge of the blackboard and using a wiper member that erases the blackboard in a dry manner. It came to invent the blackboard with the function.

That is, the present invention is a blackboard erasing device that is installed on a rectangular blackboard and erases the blackboard surface,
A cylindrical wiper member extending substantially parallel to one end of the blackboard, a rotation drive means for rotating the wiper member around a cylindrical axis, and one or more slider members engageable with a rail member; A wiper unit having
In the blackboard erasing apparatus that has one or more rail members that extend in a substantially vertical direction with one side end of the blackboard and that can slidably accommodate each of the slider members,
The cylindrical wiper member has a plurality of rows of protrusions extending in a radial direction from the cylindrical surface and extending in a substantially equilibrium direction on a cylindrical axis, and while rotating the wiper member, The sliders act on the rail member to move the wiper unit in a direction substantially perpendicular to one side edge of the blackboard, whereby the protrusions wipe off deposits (chalk powder etc.) on the blackboard surface. A blackboard erasing device characterized by the above is provided.

In the blackboard erasing apparatus according to the present invention, each protrusion of the wiper member has a notch formed at a plurality of positions in the extending direction.
Thereby, the adhering matter wiped off from the blackboard surface does not stay between the protrusions, and the erasing effect is improved.

Furthermore, it is preferable that the notch portion in each projection portion of the wiper member is formed so that the formation position thereof does not coincide with at least all the projection portions.
This is because the blackboard surface can be erased uniformly without unevenness.

In the blackboard erasing apparatus according to the present invention, the wiper unit includes a brush member that contacts a tip of each protrusion of the wiper member.
Thereby, the adhering matter wiped off from the blackboard surface attached to the tip of each projection of the wiper member is wiped off by the brush member, and the tip of each projection returns to a clean state, so that the erasing effect is maintained. Can do.

The present invention is also a rectangular blackboard,
A cylindrical wiper member extending substantially parallel to one end of the blackboard, a rotation drive means for rotating the wiper member around a cylindrical axis, and one or more slider members engageable with a rail member; A wiper unit having
A blackboard provided with one or more rail members that extend in a direction substantially perpendicular to one side end of the blackboard and that can slidably accommodate each of the slider members,
The cylindrical wiper member has a plurality of rows of protrusions extending in a radial direction from the cylindrical surface and extending in a substantially equilibrium direction on a cylindrical axis, and while rotating the wiper member, The sliders act on the rail member to move the wiper unit in a direction substantially perpendicular to one side edge of the blackboard, whereby the protrusions wipe off deposits (chalk powder etc.) on the blackboard surface. The blackboard is characterized by being automatically erased by.

In the blackboard of the present invention, each protrusion of the wiper member has a notch formed at a plurality of positions in the extending direction.
Thereby, the adhering matter wiped off from the blackboard surface does not stay between the protrusions, and the erasing effect is improved.

Furthermore, it is preferable that the notch portion in each projection portion of the wiper member is formed so that the formation position thereof does not coincide with at least all the projection portions.
This is because the blackboard surface can be erased uniformly without unevenness.

In the blackboard according to the present invention, the wiper unit includes a brush member that contacts a tip of each protrusion of the wiper member.
Thereby, the adhering matter wiped off from the blackboard surface attached to the tip of each projection of the wiper member is wiped off by the brush member, and the tip of each projection returns to a clean state, so that the erasing effect is maintained. Can do.

As described above, according to the present invention, the blackboard can be wiped dry by using a wiper member extending in a direction substantially parallel to the side edge of the blackboard, so that the low-cost and simple configuration can be achieved. A blackboard having a blackboard erasing device and an automatic erasing function is realized.
In addition, it is possible to maintain the effect of the erasing operation by forming a plurality of notches at different positions of each protrusion of the wiper member and providing a brush member for cleaning the tip of the protrusion. ing.

  The best mode for carrying out a blackboard equipped with a blackboard erasing apparatus and an automatic erasing function of the present invention will be described in detail below with reference to the accompanying drawings. 1 to 4 are diagrams illustrating embodiments of the present invention. In these drawings, the same reference numerals denote the same components, and the basic configuration and operation are the same. To do.

[1] Configuration of Blackboard Erasing Device FIG. 1 is a diagram schematically showing an overall configuration of a blackboard erasing device according to an embodiment of the present invention.
The blackboard erasing apparatus shown in FIG. 1 includes rail members 110 and 120 extending in the horizontal direction, a fixing member 130 extending in the vertical direction, and a wiper unit 140 extending in the vertical direction.
The rail members 110 and 120 have a groove in the horizontal direction. When the slider member is engaged with the groove, the slider member is slidably held in the horizontal direction. The fixing member 130 is fixed to the vicinity of the end portions of the rail members 110 and 120 near both ends thereof, and plays a role of fixing and supporting the rail members 110 and 120. The wiper unit 140 has slider members 142 and 144 at both ends. The slider members 142 and 144 engage with the grooves of the rail members 110 and 120, respectively, so that the wiper unit 140 can slide in the horizontal direction. Is retained.

In FIG. 1, the lower part of the wiper unit 140 is configured to be positioned on the front side of the paper with respect to the upper part.
Although not shown, the wiper unit 140 has means for driving the slider members 142 and 144 so that they can move on the rail members 110 and 120 in the horizontal direction. Alternatively, the rail members 110 and 120 may include the driving unit.

FIG. 2 is a view showing the back side of the blackboard erasing apparatus shown in FIG.
In FIG. 2, the wiper unit 140 has a large opening, and has a wiper member 150, rotation driving units 152 and 154, and a dust removing brush 156 inside the opening. Further, as described above, the lower part of the wiper unit 140 is configured to be located on the back side of the paper surface from the upper part. However, the wiper member 150, the rotation driving units 152 and 154, and the dust removing brush 156 are all included. The wiper unit 140 is disposed inside the upper side.

  The wiper member 150 has a plurality of protrusions extending in the vertical direction, and the protrusions are formed by covering the surface of the sponge with a lash-like cloth, like a conventional blackboard eraser. The rotation driving units 152 and 154 rotate the wiper member 150 by a power source such as a motor (not shown). As for the rotation direction of the wiper member 150, the direction in which the wiper unit 140 moves on the rail members 110 and 120 and the direction in which the wiper member 150 wipes the blackboard are made to coincide. Note that only one of the rotation driving units may be provided on the upper side or the lower side. The dust removing brush 156 includes brush hairs extending from both end portions of the wiper unit 140 toward the wiper member 150, and the tips of the brush come into contact with the wiper member 150 to scrape off the chalk powder adhering to the wiper member 150. Arranged to be able to.

FIG. 3 is a partially enlarged view showing a detailed structure of the wiper unit 140 shown in FIG.
As shown in FIG. 3, the wiper member 150 of the wiper unit 140 has a length in the vertical direction around the cylindrical rotating body, and has several rows of protrusions protruding radially from the rotating body. Become. Each protrusion is formed with notches (recesses) at a predetermined interval so that chalk powder does not stay between the protrusion and the blackboard during blackboard erasure. Further, as shown in the drawing, the protrusions in each row are formed with cutout portions at different positions. By having such a notch portion, the chalk powder can be wiped off evenly on the distorted blackboard surface with uniform pressure, so that a uniform erasing effect can be obtained.
Further, as described above, the brush powder dropping brush 156 for sweeping off the chalk powder adhering to each protrusion of the wiper member 150 is provided at both end portions of the wiper unit 140 that are opened.

FIG. 4 is a diagram illustrating a mode in which the blackboard erasing apparatus of the present embodiment described above is applied to a blackboard.
As shown in FIG. 4, the blackboard erasing apparatus of the present embodiment can be installed so as to cover the blackboard. According to the size and shape of the blackboard to be installed, the vertical and horizontal dimensions of the blackboard erasing device (that is, the length dimensions of the rail members 110 and 120, the fixing member 130, the wiper unit 140), the dimensions of the wiper member 150 of the wiper unit 140, etc. It is possible to design appropriately.
Here, as described above, since the lower part of the wiper unit 140 is configured such that the lower part of the wiper unit 140 is located on the front side of the paper with respect to the upper part, the wiper unit 140 moves left and right. At that time, there is no contact with the powder tray or the blackboard eraser placed on the powder tray.
In addition, the form which applies the blackboard eraser of this embodiment to a blackboard is not necessarily restricted to what is shown in FIG. Depending on the shape, nature, usage form, etc. of the blackboard, various application forms are possible as long as the erasing operation by the blackboard erasing device is not hindered. Further, the blackboard erasing device can be formed integrally with the blackboard to provide a blackboard with an automatic erasing function.

[2] Operation of Blackboard Erasing Device The blackboard erasing operation by the blackboard erasing device of the present embodiment described above will be described.
When the blackboard erasing apparatus is not in operation, the wiper unit 140 is located at the right end of the apparatus (or may be the left end) as shown in FIG. When the operator performs an erasing operation, the wiper unit 140 is driven to move on the rail members 110 and 120 toward the right side, and the wiper member 150 shown in FIG. 2 is rotationally driven by the rotation driving units 152 and 154. The blackboard is cleaned as the tip of the protrusion of the wiper member 150 wipes the blackboard surface. Part of the chalk powder or the like wiped by the tip of the wiper member 150 adheres to the tip of the protrusion of the wiper member 150, and part of the chalk powder falls downward and is accommodated in a blackboard powder receiver.
The tip of the protrusion of the wiper member 150 wipes the surface of the blackboard, and then comes into contact with the dusting brush 156 shown in FIGS. 2 and 3. As a result, the chalk powder adhering to the tip of the protrusion is removed and falls downward. It is housed in a blackboard powder tray. In this way, the projections of the wiper member 150 that have become dirty by cleaning the blackboard surface are cleaned by the dusting brush 156, so that the blackboard surface can be rotated again and cleaned.

  It should be noted that the blackboard erasing effect can be maintained by periodically cleaning the protrusions of the wiper member 150 and the dusting brush 156. For example, if the wiper member 150 is detachable in the wiper unit 140, the wiper member 150 and the dusting brush 156 can be easily cleaned.

  As mentioned above, although the specific embodiment was shown and demonstrated about the blackboard provided with the blackboard erasing apparatus and automatic erasing function of this invention, this invention is not limited to these. A person skilled in the art can make various changes and improvements to the configuration and function of the fixing member in each of the above embodiments without departing from the scope of the present invention.

For example, in the above embodiment, the blackboard erasing apparatus for cleaning the entire blackboard by moving the wiper member extending in the vertical direction in the horizontal direction has been described, but the blackboard erasing apparatus of the present invention is not limited to this. For example, a blackboard erasing apparatus that cleans the entire blackboard by moving a wiper member extending in the horizontal direction in the vertical direction may be used.
In the above embodiment, the blackboard erasing apparatus having a pair of rail members has been described. However, the blackboard erasing apparatus of the present invention is not limited to this, and for example, the blackboard erasing apparatus using only one rail member is used. It can also be a device.
In the above embodiment, the blackboard erasing apparatus having a fixing member that fixes two rail members has been described. However, the blackboard erasing apparatus of the present invention is not limited to this, and includes, for example, a fixing member. Alternatively, the blackboard erasing device may be configured such that each rail member is directly fixed to the blackboard (or a wall surface around the blackboard).

It is a figure showing roughly the whole blackboard erasing device composition concerning one embodiment of the present invention. It is the figure which showed the blackboard eraser shown in FIG. 1 from the back side. FIG. 3 is a partial enlarged view showing a detailed structure of a wiper unit 140 shown in FIG. 2. It is a figure which illustrates the aspect which applies the blackboard eraser in embodiment shown in FIGS. 1-3 to a blackboard.

Explanation of symbols

DESCRIPTION OF SYMBOLS 110 Rail member 120 Rail member 130 Fixed member 140 Wiper unit 142 Slider member 144 Slider member 150 Wiper member 152 Rotation drive part 154 Rotation drive part 156 Dust removal brush

Claims (8)

A blackboard erasing device installed on a rectangular blackboard to erase the surface of the blackboard,
A cylindrical wiper member extending substantially parallel to one end of the blackboard, a rotation drive means for rotating the wiper member around a cylindrical axis, and one or more slider members engageable with a rail member; A wiper unit having
In the blackboard erasing apparatus that has one or more rail members that extend in a substantially vertical direction with one side end of the blackboard and that can slidably accommodate each of the slider members,
The cylindrical wiper member has a plurality of rows of protrusions extending in a radial direction from the cylindrical surface and extending in a substantially equilibrium direction on a cylindrical axis, and while rotating the wiper member, A blackboard characterized in that the projections wipe off deposits on the blackboard surface by activating the slider member on a rail member and moving the wiper unit in a direction substantially perpendicular to one end of the blackboard. Eraser.   2. The blackboard erasing apparatus according to claim 1, wherein each protrusion of the wiper member has a notch formed at a plurality of positions in the extending direction.   The blackboard erasing apparatus according to claim 2, wherein the notch portion of each projection portion of the wiper member is formed so that a formation position thereof does not coincide with at least all the projection portions.   4. The blackboard erasing apparatus according to claim 1, wherein the wiper unit includes a brush member that contacts a tip of each protrusion of the wiper member. 5. A rectangular blackboard,
A cylindrical wiper member extending substantially parallel to one end of the blackboard, a rotation drive means for rotating the wiper member around a cylindrical axis, and one or more slider members engageable with a rail member; A wiper unit having
A blackboard provided with one or more rail members that extend in a direction substantially perpendicular to one side end of the blackboard and that can slidably accommodate each of the slider members,
The cylindrical wiper member has a plurality of rows of protrusions extending in a radial direction from the cylindrical surface and extending in a substantially equilibrium direction on a cylindrical axis, and while rotating the wiper member, By activating the slider member on the rail member and moving the wiper unit in a direction substantially perpendicular to one side edge of the blackboard, each protrusion is automatically erased by wiping off the deposits on the blackboard surface. A blackboard characterized by that.   6. The blackboard according to claim 5, wherein each protrusion of the wiper member has a notch formed at a plurality of positions in the extending direction.   The blackboard according to claim 6, wherein the cutout portion of each protrusion of the wiper member is formed so that the formation position thereof does not coincide with at least all the protrusions.   The blackboard according to any one of claims 5 to 7, wherein the wiper unit includes a brush member that contacts a tip of each protrusion of the wiper member.

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