JPH0825892A - Erasing device of white board or the like - Google Patents

Abstract

PURPOSE:To make it possible to keep a dusting-off surface clean at all times by a method wherein flock abutting part, which removes written dusts such as ink dusts or the like adhered to flocking material through the rotation of rollers and collects the dusts to the predetermined site of a roller supporting frame, is provided. CONSTITUTION:By sliding a first and a second rollers 68 and 70 in rotation on a white board under the condition that the rollers 68 and 70 are abutted against the board surface of the white board, characters or figures written with ink on the white board are erased with the flocking materials 68f and 70f of the rollers 68 and 70. The inks adhered to the flocking materials 68f and 70f are spattered by the elastic vibrations of the flocking materials 68f and 70f through the rotatingly abutting of the flocking materials 68f and 70f against the tip of projecting plate parts 78 in partitioning holes 75b, resulting in being collected through the holes 75b into dust collecting chambers 77.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a character erasing device for erasing characters, figures, etc. written on a white board, a blackboard or the like with ink or chalk.

[0002]

2. Description of the Related Art Conventionally, a wiping tool as shown in FIG. 7 has been used to erase characters and figures written on a white board. This wiping tool has a structure in which a wiping member 2 in which an elastic core material such as a sponge is covered with a cloth 2b is fitted in an elongated frame body 1, and a box using an alcohol ink is used. Characters and figures written with a writing instrument of a marker are wiped off with a wiping member 2. The wiping member 2 is attachable to and detachable from the elongated frame body 1. When the dirt becomes severe, the wiping member 2 is pulled out from the elongated frame body 1 and replaced with a new wiping member 2. It has become.

Further, in the wiping tool for the blackboard, the cloth 2b described above is in a brushed shape, and the wiping member wipes off the chalk to erase the characters and figures written on the blackboard. ing.

[0004]

Among the above-mentioned wiping tools, the wiping tool for the white plate is an alcohol wiper on the wiping surface of the wiping member 2.
This is very troublesome because the ruble ink adheres and the ink easily adheres to human hands, clothes, etc., and once the ink adheres, the dirt cannot be surely removed even by washing with soap or the like.
Further, since the wiping tool having the ink adhered to the wiping surface is left as it is, it lacks a clean feeling and is not preferable in the environment.

On the other hand, the blackboard wiping tool has a problem in that the white powder of the chalk scatters during the wiping operation, thus contaminating the surrounding environment.

In view of the above-mentioned situation, the present invention is easy to handle and can erase characters such as ink powder when wiping it off without leaving it on the wiping surface. The purpose is to develop the device.

[0007]

In order to achieve the above-mentioned object, in the present invention, a roller holding frame which is detachably attached to the lower portion of the apparatus case and is rotated by driving a motor. The roller holding frame is equipped with the roller holding frame, and the roller holding frame is provided so as to abut the roller with the flocked material around the roller. It is composed of a flocking contact part that removes writing powder such as ink powder adhering to the flocking material and collects it at a predetermined portion of the roller holding frame, and rolls the plate surface of the writing board such as a white plate. We propose a erasing device such as a white plate, which is characterized by erasing characters by rotating the la while rotating.

[0008]

The motor is driven to rotate the roller, and the rotating roller is brought into contact with the surface of the white plate to slide it. Characters and drawings of ink written on the white plate are erased from the white plate by the ink adhering to the flocked material around the roller.

The ink powder adhering to the flocked material is splashed by the flocked contact portion with which the flocked material abuts by the rotation of the roller, and is collected at a predetermined portion.

To discard the collected ink powder, the roller holding frame is removed from the apparatus case, and then the ink powder is removed.

Characters and figures written on chalk on the blackboard can also be erased from the blackboard in the same manner as above because chalk white powder adheres to the flocked material around the roller.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will now be described with reference to the drawings. 1 is a vertical side view of the erasing device, and FIG. 2 is FIG.
FIG. 3 is a cross-sectional view taken along the line AA of FIG.

In these figures, the device case 50
Is a horizontally long upper case 51 with an open bottom and an upper case.
A lower case 52 is formed so as to form a space below one side of the case 51. The lower case 52 has an upper case 51 with a plate-like portion 52a serving as the bottom of the upper case 51. It is attached to 51.

A lower case is provided inside one side of the device case 50.
A support base 55 fixed to the plate-shaped portion 52a of the space 52 with bolts 54 is provided, and a motor 56 is provided on the support base 55.

The battery case 57 serving as a power source for driving the motor 56, the circuit board 58 and the charging connector 59 are mounted on the plate-like portion 52a of the lower case 52 so that the device case can be obtained. It is stored in 50.

In the motor 56 described above, the motor shaft 60 penetrates the center of the support base 55 and projects into the lower case 52.
A small V-pull 61 is fixed to the motor shaft 60.

Further, a V pulley 6 is attached to the above-mentioned support base 55.
2, a worm gear 63 is rotatably supported, and
The pulley 62 and the V pulley 61 are connected by a belt 64.

Further, a gear support frame 65 is provided in the lower case 52, and a worm wheel 66 and an idle gear 67 are rotatably supported by the gear support frame 65.
The worm wheel 66 meshes with the worm gear 63 and also with the idle gear 67.

The above-mentioned worm wheel 66 meshes with a gear 69 provided on a roller shaft of a first roller 68 which will be described later, and the idle gear 67 which is a roller of a second roller 70 which will be described later. -The gear 71 is meshed with the shaft.

On the upper case 51 of the device case 50, an operable switch 72 for connecting to the above-mentioned circuit board 58 is provided.
Is provided.

In the above-mentioned device case 50, a horizontally long roller holding frame 73 is detachably attached to the device case 50 below the plate-like portion 52a of the lower case 52. Is installed as.

The roller holding frame 73 is a box-shaped frame body 74 whose upper and lower sides are open, and is integrally formed with the frame body 74 in the middle of the frame body 74 to divide the frame body 74 into upper and lower parts. The partition 75 and the lid 76 detachably provided on the upper side of the frame 74 are formed of a semitransparent material.

The partition 75 is a frame 74 as shown in FIG.
Has a shape having two chevron 75a between the side walls 74a, and a linear hole 75b along the longitudinal direction of the frame 74 is formed at the top of each chevron 75a.

Further, from the central portion of the partition 75, the support plate 7
5c protrudes integrally with the partition 75.

On the other hand, the lid body 76 is a plate-like member that covers the upper side of the roller holding frame 73, and is placed on a stepped portion 74b formed on the upper portion of the inner peripheral surface of the frame body 74. 74b and the support plate 75c of the partition 75 hold | maintain. As a result, a space surrounded by the lid body 76, the partition 75, and the frame body 74 is formed as a predetermined portion above the roller holding frame 73, and this space serves as a powder collection chamber 77.

Further, the lid body 76 is provided with a pendant projecting plate portion 78 as a flocking contact portion. This protruding plate portion 78
Is integrally provided on the back surface of the lid body 76, and is formed along the longitudinal direction of the lid body 76 so as to face the hole 75b of the partition 75 described above. It has a sharp triangular cross-section. The tip of the projecting plate portion 78 protrudes slightly into the hole 75b of the partition 75 and projects into the hole 75b.

The roller holding frame 73 described above is attached to the device case 50 so as to fit into the step portion 52b formed in the plate-like portion 52a of the lower case 52, as shown in FIG.
Device case 50 by pulling to the right in the upper direction
Can be removed from.

The above roller holding frame 73 has the above-mentioned 2
Two rollers 68, 70 are provided. First roller 6
8 and the second roller 70 are similar, and the second roller 70 is shown in FIG.

In the second roller 70, one end of a roller portion 70a projects a roller shaft 70b provided with a gear 71, and a support shaft 70c projects at the tip of the roller shaft 70b. Also,
A support shaft 70d projects from the other end of the roller portion 70a. In this second roller 70, a roller shaft 70b protruding from one wall 74c of the frame 74 is rotatably supported by this one wall 74c, and a support shaft 70d at the other end of the rotor portion 70a. Is rotatably supported by a bearing formed on the other wall 74 d of the frame body 74 and attached to the roller holding frame 73.

When the roller holding frame 73 is attached to the device case 50, the support shaft 70c of the second roller 70 is attached to the gear support frame 6.
5 is rotatably supported by a bearing 65a formed in
As described above, the gear 71 meshes with the idle gear 67.

The first roller 68 is attached to the roller holding frame 73 in the same manner as the second roller 70. When the roller holding frame 73 is attached to the device case 50, The gear 69 of the one roller 68 meshes with the worm wheel 66.

The first and second rollers 68, 70 described above are
The roller portions 68a and 70a are formed as follows.
FIG. 4 is an enlarged view of the first roller 68 shown in FIG. 2. The roller portion 68a is provided with a flocked material 68f around a cylindrical core body 68e made of sponge or rubber. .
The flocked material 68f is made of nylon, polyester, rayon or the like and has a diameter of 0.1 to 0.2 mm.
With a fiber cloth having a length of about 1 mm, the flocked material 68f is brushed around the core body 68e by a known flocking technique. Note that a rubber material may be covered around the core body 68e formed of a synthetic resin material, and the flocked material 68f may be flocked to the rubber material.

The first roller 68 is attached to the roller holding frame 73 so that the tip end of the flocked material 68f faces the hole 75b of the partition 75, and as a result, as shown in FIG. As shown, the tip of the flocked material 68f has the hole 7
The tip of the protruding plate portion 78 is brought into contact with the inside of 5b.

The roller portion 70a of the second roller 70 is also provided with a flocked material 70f around the core 70e in the same manner as described above, and the tip of this flocked material 70f faces the hole 75b of the partition 75. And is attached to the roller holding frame 73.

The first and second rollers 68 and 70 shown in FIG.
, The roller holding frames 7f and 70f are in contact with each other, and the lower sides of the rollers 68 and 70 project from the lower end of the roller holding frame 73.
It is attached to 3.

Next, the operation of the eraser will be described. When the device case 50 is gripped with one hand and the switch 72 is turned on, the motor 56 is powered by the power supply battery 57 to rotate, and the V pulley 62 connected by the V pulley 61 and the belt 64 rotates. To do. The rotation of the V pulley 62 causes the worm wheel 66 meshed with the worm gear 63 to rotate in the counterclockwise direction, causing the idle gear 67 and the gear 69 of the first roller 68 to rotate in the clockwise direction. Further, the clockwise rotation of the idle gear 67 causes the gear 71 of the second roller 70 to rotate counterclockwise. As a result, the first roll
The first roller 68 and the second roller 70 rotate clockwise and counterclockwise, respectively, as shown by solid arrows in FIG.

While the first and second rollers 68, 70 are rotating as described above, when the rollers 68, 70 are applied to the plate surface of the white plate and slid on the white plate, the white plate is written. The flocking material 68f of the rollers 68, 70, such as the characters or drawings of the inked ink,
It is erased by 70f.

The ink adhered to the flocked materials 68f and 70f comes into contact with the flocked materials 68f and 70f while rotating with the tips of the projecting plate portions 78 in the holes 75b of the partition 75. Is bounced off as indicated by the solid line arrow, enters the powder collecting chamber 77 through the hole 75b, and is collected.

Since the first and second rollers 68 and 70 rotate inward in the opposite directions while contacting the respective flocked materials 68f and 70f, the ink adhered to the flocked materials 68f and 70f is the first. , The second rollers 68, 70 do not fall in the middle of rotation while rotating, and the powder collecting ability is extremely high.

In the same manner as above, chalk characters and figures written on the blackboard are treated with white powder and the first and second rollers 6 and 6 respectively.
The characters can be erased by wiping with the flocked materials 68f, 70f of 8, 70.

Since the roller holding frame 73 is formed of a translucent body, the inside of the powder collecting chamber 77 can be constantly observed from the outside, and when the amount of collected powder is large, the roller holding frame 73 is provided. Figure 1
The roller holding frame 73 is pulled out to the right above to remove the roller holding frame 73 from the device case 50, and the lid body 76 of the roller holding frame 73 is removed to collect the powder of ink collected in the powder collecting chamber 77. Remove the white powder from the chalk.

After cleaning the inside of the powder collecting chamber 77, the roller holding frame 73 is covered with the lid 76, and the roller holding frame 73 is attached to the apparatus case 50 to be used again.

Next, FIGS. 5 and 6 show another example of the projecting plate portion 78 formed on the lid body 76 as the flocking contact portion. FIG. 5 shows the protruding plate portion 79 formed of an elastic plate.
The lid body 76 is integrally provided with a protruding plate portion 79 made of an elastic plate, and the flocked material 68f of the roller 68 and the ink powder adhering to the flocked material 68f are splashed by the elastic vibration of the protruding plate portion 79. It is like this.

FIG. 6 shows a structure in which the protruding plate portion 80 formed of an elastic plate is forcibly vibrated by the electromagnetic actuator 81 provided above the lid body 76.

[0045]

As described above, the erasing apparatus according to the present invention wipes ink characters and figures written on a writing board such as a white board with a flocked material on the surface of a roller and adheres to the flocked material. Since the flocked material flicks the writing powder such as the ink powder or the like, which is caused by the elastic vibration generated by the contact of the flocked part with the flocked contact part, and collects it at a predetermined part of the roller holding frame, Is always kept clean and rich in cleanliness, and ink and chocks do not adhere to clothes as in the conventional case, which is a very advantageous device for handling.

Further, since the roller holding frame is attachable / detachable to / from the apparatus case, it is possible to provide an apparatus which is extremely easy to treat the writing powder and is easy to use.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a erasing device of the present invention.

FIG. 2 is a cross-sectional view taken along the line AA in FIG.

FIG. 3 is a cross-sectional view taken along the line BB in FIG.

FIG. 4 is a partially enlarged view showing a roller and a part of a roller holding frame in an enlarged manner.

FIG. 5 is a view showing another example of the projecting plate portion as the flocking contact portion provided in the erasing device of the present invention, which is an enlarged view of a part of the roller and the roller holding frame. FIG.

FIG. 6 is a view showing another example of the protruding plate portion as the flocked contact portion provided in the erasing device of the present invention, and is a partially enlarged view similar to FIG.

FIG. 7 is a perspective view partially showing a conventional wiping tool.

[Explanation of symbols]

 50 Device Case 51 Upper Case 52 Lower Case 56 Motor 57 Battery 68 First Roller 68a Roller Part 68e Core Body 68f Flocking Material 70 Second Roller 70a Roller Part 70e Core body 70f Flocking material 72 Switch 73 Roller holding frame 75 Partition 75a Yamagata 75b Hole 76 Lid body 77 Powder collection chamber

Claims (1)

[Claims] 1. A roller holding frame detachably provided at a lower portion of an apparatus case, the roller holding frame which is rotated by a motor drive, and is provided on the roller holding frame, and a flocked material is provided around the roller holding frame. The roller holding frame is provided so that the roller provided and the flocked material of the roller come into contact with each other, and the writing powder such as ink powder adhering to the flocked material is removed according to the rotation of the roller to remove the roller. -It is composed of a flocking contact part for collecting powder at a predetermined part of the la holding frame, and the plate surface of the writing board such as a white plate is slid while rotating the roller to erase the character. An eraser such as a white plate.