JP3051306B2 - Character erasing device such as white board - Google Patents

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 and figures written on a white board or a blackboard with ink or chalk.

[0002]

2. Description of the Related Art Conventionally, a wiper 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 covered with a cloth 2b around an elastic core material such as a sponge is fitted into the elongated frame 1, and is a ball using alcohol-based ink. The characters and figures written with the writing implement of the marker are wiped off by the wiping member 2 to be erased. The wiping member 2 is detachable inside the elongated frame 1. If the dirt becomes severe, the wiping member 2 is removed from the elongated frame 1 and replaced with a new wiping member 2. It has become.

The wiping tool for a blackboard has a brush-like cloth 2b, and the wiping member wipes off the choke to erase characters and figures written on the blackboard. ing.

[0004]

Among the wiping tools described above, the wiping tool for the white plate has an alcohol-wiping surface on the wiping surface of the wiping member 2.
The ink easily adheres to human hands and clothes, etc., and once the ink adheres, the stain cannot be reliably removed even with washing with soap or the like, which is very troublesome.
Further, since the wiping tool to which the ink has adhered to the wiping surface is left as it is, the wiping tool lacks cleanliness and is not preferable in the environment.

On the other hand, the wiping tool for a blackboard has a problem that the white powder of the chalk scatters at the time of wiping, so that the surrounding environment is contaminated.

In view of the above-mentioned circumstances, the present invention provides an easy-to-use erasing method for a white plate or the like that can be erased without collecting ink powder or the like during wiping without leaving the wiping surface. It is intended to provide a device.

[0007]

According to the present invention, there is provided a roller holding frame detachably provided at a lower portion of an apparatus case, and a roller holding frame rotatably driven by a motor. And a roller provided with a flocked material around the roller and the roller holding frame provided to abut the flocked material of the roller, and removes writing powder such as ink powder adhered to the flocked material as the roller rotates. Then, the flour is collected at a predetermined portion of the roller holding frame, and is configured by a flocking contact portion made of an elastic plate, and means for forcibly vibrating the flocking contact portion, and a plate surface of a writing board such as a white plate is A character erasing device, such as a white board, characterized in that a roller is slid while rotating to erase characters.

[0008]

The motor is driven to rotate the roller, and the rotating roller is slid against the surface of the white plate. Ink characters, drawings and the like written on the white plate are erased from the white plate when the ink adheres to the flocked material around the roller.

[0009] The ink powder adhering to the flocked material is bounced off by the forcibly vibrated flocked contact portion, which is brought into contact with the flocked material by the rotation of the roller, and collected at a predetermined location.

When the collected ink powder is discarded, the roller powder is removed after removing the roller holding frame from the apparatus case.

[0011] Further, chalk white powder adheres to the flocked material around the roller, and characters and figures written on the chalkboard can be erased from the chalkboard in the same manner as described above.

[0012]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal side view of the erasing device, and FIG.
FIG. 3 is a cross-sectional view taken along line BB in FIG. 1.

In these figures, an apparatus case 50 is shown.
The upper case 51 has a horizontally long upper case 51 with an open bottom.
The lower case 52 comprises a lower case 52 which forms a space below one side of the case 51. The lower case 52 has an upper case 51 in which the plate-like portion 52a is the bottom of the upper case 51. 51.

Inside one side of the device case 50 is a lower case.
A support table 55 fixed to the plate-like portion 52a of the bracket 52 with bolts 54 is provided, and the support table 55 is provided with a motor 56.

A battery 57 as a power source for driving the motor 56, a circuit board 58, and a charging connector 59 are housed in the apparatus case 50 so as to be mounted on the plate-shaped portion 52a of the lower case 52. I have.

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

The support table 55 has a V pulley 6 on it.
2 is rotatably supported by a worm gear 63 having
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 on the gear support frame 65,
The worm wheel 66 meshes with the worm gear 63 and the idle gear 67.

The worm wheel 66 meshes with a gear 69 provided on a roller shaft of a first roller 68 described later, and the idle gear 67 engages a roller of a second roller 70 described later. -Meshes with a gear 71 provided on the shaft.

The upper case 51 of the device case 50 has an operable switch 72 connected to the circuit board 58 described above.
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. Installed as

The roller holding frame 73 has a box-shaped frame 74 having upper and lower sides opened, and is formed integrally with the frame 74 in the middle of the frame 74 to divide the upper and lower sides of the frame 74. And a lid 76 detachably provided on the upper side of the frame 74, and these are formed of a translucent material.

The partition 75 has a frame 74 as shown in FIG.
Each of the ridges 75a has a straight hole 75b formed along the longitudinal direction of the frame 74 at the top of each ridge 75a.

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

On the other hand, the lid 76 is a plate-shaped one that covers the upper side of the roller holding frame 73, and is placed on a step 74b formed on the upper inner peripheral surface of the frame 74. It is configured to be held by a support plate 75c of the partition 74b and the partition 75. Thus, a space surrounded by the lid 76, the partition 75, and the frame 74 is formed as a predetermined portion above the roller holding frame 73, and this space is a dust collecting chamber 77.

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

The above-described roller holding frame 73 is attached to the device case 50 so as to be fitted into a step portion 52b formed in the plate-like portion 52a of the lower case 52, and is directed rightward in FIG. in particular therefore the apparatus case pull to 50
Can be removed from .

The above-mentioned 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 the same, and FIG. 1 shows the second roller 70.

In the second roller 70, one end of a roller portion 70a protrudes from a roller shaft 70b having a gear 71, and a support shaft 70c protrudes from the tip of the roller shaft 70b. Also,
A support shaft 70d protrudes from the other end of the roller portion 70a. In the second roller 70, a roller shaft 70b protruding from one wall 74c of the frame 74 is rotatably supported by the one wall 74c, and a support shaft 70d at the other end of the roller portion 70a is connected to the other end of the frame 74. It is rotatably supported by a bearing formed on the wall 74d and is attached to the roller holding frame 73.

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

The first roller 68 is mounted on a roller holding frame 73 in the same manner as the second roller 70, and when the roller holding frame 73 is mounted on the apparatus case 50, The gear 69 of one roller 68 meshes with the worm wheel 66.

The first and second rollers 68 and 70 are
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 has a flocked material 68f around a core 68e formed of a sponge or rubber in a columnar shape. .
The flocked material 68f is made of, for example, 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 68e in a brush shape by a known flocking technique. Note that a rubber material may be covered around the core 68e formed of a synthetic resin material, and the flocked material 68f may be implanted in the rubber material.

The first roller 68 is attached to the roller holding frame 73 such that the tip of the flocked material 68f faces the hole 75b of the partition 75, and as shown in FIG. As shown in FIG.
5b, it comes into contact with the tip of the protruding plate portion 78.

Similarly, the roller portion 70a of the second roller 70 is provided with a flocked material 70f around the core body 70e so that the tip of the flocked material 70f faces the hole 75b of the partition 75. It is attached to a roller holding frame 73.

The first and second rollers 68 and 70 correspond to FIG.
As shown in FIG. 7, the flocked members 68f and 70f are in contact with each other, and the lower sides of the rollers 68 and 70 are projected from the lower end of the roller holding frame 73.
3 attached.

Next, the operation of the erasing device will be described. When the switch 72 is turned on while holding the device case 50 with one hand, the motor 56 is rotated by being supplied with power from the power supply battery 57, and the V pulley 62 connected to the V pulley 61 and the belt 64 is rotated. I do. The rotation of the V-pull 62 causes the worm wheel 66 meshed with the worm gear 63 to rotate in the counterclockwise direction, thereby rotating both the idle gear 67 and the gear 69 of the first roller 68 in the clockwise direction. 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 row
As shown by the solid arrows in FIG. 2, the first roller 68 rotates clockwise and the second roller 70 rotates counterclockwise.

With the first and second rollers 68, 70 rotating as described above, the rollers 68, 70 are brought into contact with the surface of the white plate and slid on the white plate to write on the white plate. The letters or drawings of the ink placed on the rollers 68, 70 are used as the flock material 68f,
It is erased by 70f.

The ink adhered to the flocked material 68f, 70f is rotated by the flocked material 68f, 70f in contact with the tip of the protruding plate portion 78 in the hole 75b of the partition 75, thereby causing the flocked material to elastically vibrate as shown in FIG. Are bounced off as shown by the solid line arrow in FIG.

Since the first and second rollers 68 and 70 are rotated inward in opposite directions while contacting the respective flocked materials 68f and 70f, the ink adhering to the flocked materials 68f and 70f is removed from the first and second rollers 68 and 70. The powder collecting ability is extremely high without falling during rotation of the second rollers 68, 70.

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

Since the roller holding frame 73 is formed of a translucent body, the inside of the dust collecting chamber 77 can always be observed from the outside. Figure 1
The roller holding frame 73 is removed from the apparatus case 50 by pulling it upward to the right, and the lid 76 of the roller holding frame 73 is removed, and the ink powder collected in the dust collecting chamber 77 is removed. And chalk white powder are removed.

After the inside of the dust collecting chamber 77 is cleaned, the lid 76 is put on the roller holding frame 73, and the roller holding frame 73 can be newly used simply by being attached to the apparatus case 50.

FIGS. 5 and 6 show another example of the protruding plate portion 78 formed on the lid 76 as a flocking contact portion. FIG. 5 shows the protruding plate portion 79 formed of an elastic plate.
A protruding plate portion 79 made of an elastic plate is integrally provided on the lid 76, and the flocking material 68f of the roller 68 and the ink powder adhering to the flocking material 68f due to the elastic vibration of the protruding plate portion 79 are bounced off. It has become.

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

[0045]

As described above, in the character erasing apparatus according to the present invention, ink characters and figures written on a writing board such as a white board are wiped with a flocked material on a roller surface and adhered to the flocked material. The writing powder such as the ink powder is repelled by the elastic vibration generated by the contact of the flocking material with the flocking contact portion to collect the powder at a predetermined portion of the roller holding frame. Is always clean and rich in cleanliness, and ink and chalk do not adhere to clothes as in the prior art.

Further, since the roller holding frame is detachably attached to the apparatus case, it is possible to provide an apparatus which is extremely simple in processing of writing powder and easy to use.

[Brief description of the drawings]

FIG. 1 is a vertical side view of a character erasing apparatus of the present invention.

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

FIG. 3 is a sectional view taken along line BB in FIG. 1;

FIG. 4 is a partially enlarged view showing a part of a roller and a roller holding frame;

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

FIG. 6 is a diagram showing another example of the protruding plate portion as a flocking 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]

 Reference Signs List 50 Device case 51 Upper case 52 Lower case 56 Motor 57 Battery 68 First roller 68a Roller part 68e Core body 68f Flocked material 70 Second roller 70a Roller part 70e Core body 70f Flocked material 72 Switch 73 Roller holding frame 75 Partition 75a Mountain 75b Hole 76 Lid 77 Dust chamber

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B43L 21/00-21/02 A47L 25/00

Claims (1)

(57) [Claims] 1. A roller holding frame detachably provided at a lower portion of an apparatus case, a roller provided on the roller holding frame so as to be rotated by a motor drive, and provided with a flocked material around the roller; provided on the roller holding frame so as to abut against the flocked material, by removing the writing powder ink dust adhering to the flocked material is Atsumariko a predetermined portion locations of the roller holding frame in accordance with rotation of said roller, elastic A flocked contact portion made of a plate, and means for forcibly vibrating the flocked contact portion, and the character is erased by sliding the plate surface of a writing board such as a white plate while rotating the roller. Erasing device such as white board.