JP3511428B2 - Writing 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 writing board for writing images such as letters and pictures using a writing instrument, such as an office electronic blackboard, a children's drawing board, a bulletin board, and a message board.

[0002]

2. Description of the Related Art Conventionally, in a writing board of this type, for example, an electronic whiteboard for office use, as shown in FIG.
The endless writing sheet 3 is stretched between the driving roller 1 and the driven roller 2 so as to be rotatable in the direction of the arrow a in the figure, and the endless erasing belt 4 is brought into contact with and separated from the roller winding portion 3a of the writing sheet 3. There are things that you can freely prepare. The erasing belt 4 is provided in parallel with the rollers 1 and 2 and is rotatably provided so as to extend between a driving roller 5 and a driven roller 6 having substantially the same length as the erasing belt 4.

When using this electronic blackboard,
An image is written on the writing sheet 3 with a writing instrument such as a water-based pen.

On the other hand, when erasing the written image,
The erasing belt 4 was pressed against the roller winding portion 3a to feed the writing sheet 3, and the erasing belt 4 was conveyed to erase the written image.

[0005]

However, in such a conventional one, since the erasing belt 4 is stretched over in the feeding direction a of the writing sheet 3, the rollers 1 and 2 of the writing sheet 3 are used as the rollers 5 and 6. There is a problem in that a relatively long one, which is almost the same, is required, and the erasing belt 4 to be stretched between the long rollers 5 and 6 is also relatively large, which increases the cost.

Therefore, an object of the present invention is to reduce the cost of parts such as rollers necessary for stretching the erasing belt in a writing board such as an electronic blackboard for offices, which erases a written image by using the erasing belt as described above. To lower the overall cost.

[0007]

Therefore, the invention described in claim 1 is, for example, as in the following embodiment.
After writing an image on the writing surface D using the writing instrument 19,
When erasing the written image, the erasing belt 30 is pressed against the writing surface D at a predetermined position, and the writing surface D is sent while the erasing belt 30 is conveyed at the predetermined position to scrape the writing image. In the writing board such as the electronic blackboard 10, the erasing belt 30
While it is passed tension in the direction C which stretched between a plurality of rollers 31, 32 perpendicular to the feed direction A-B of the writing surface D, the vanishing
The eraser dust attached to the removal belt 30 is removed, for example,
Vacuum cleaner 45, rotating brush 67, cleaning blade 6
Cleaning means such as 8 is provided
The means for sucking the eraser dust adhering to the erasing belt 30
The erasing belt 3 with the vacuum system
0 is composed of a member having air permeability .

According to a second aspect of the invention, the writing tool 1 is attached to the fixed writing surface D as in the following embodiment.
When an image is written using 9 and then the written image is erased, the erasing belt 30 is pressed along the writing surface D and the erasing belt 30 is conveyed while the erasing belt 30 is moved along the writing surface D. In a writing board such as the office electronic whiteboard 10 for moving and erasing the written image, the erasing belt 30 is provided with a plurality of rollers 31.
Over between 32 while to pass tension in the direction C perpendicular to the moving direction A · B of the erase belt 30, attached to the erase belt
Equipped with a cleaning device that removes
The leaning means is used to erase the scraps attached to the erasing belt.
The vacuum system is used to absorb the
It is characterized in that the belt is composed of a member having air permeability .

Then, the eraser adhered to the erasing belt 30
The cleaning material k is removed by the cleaning means. Also erase
Vacuum cleaning when cleaning the belt 30
Actuating the means to draw air through the erase belt 30,
The suction force sucks the erased residue k from the erasing belt 30.
take.

According to a third aspect of the present invention, for example, as in the following embodiment, in the writing board according to the first or second aspect , a front side of the erase belt 30 is provided.
Vacuum suction means 50 of the cleaning means of vacuum system
On the other hand, the scrap is provided on the back side of the erasing belt 30.
An empty throttle member 55 that restricts the air flow path corresponding to the suction port 50.
It is characterized in that the air restricting hole 55a is provided .

When cleaning the erasing belt 30, the erasing belt 30 is erased.
When sucking air through the removing belt 30, the throttle member 5
Suck the air flow passage with the cleaning means by squeezing the air flow path with 5.
Strengthen.

The invention described in claim 4 is, for example, as follows.
As in the embodiment shown in FIG.
In the writing board, the erase belt 30
The dust suction port 50 and the air are inserted on the front side and the back side, respectively.
The air circulation path 60 is connected to the cleaner with the discharge port 70 facing each other.
It is characterized in that it is provided in the steering means .

When cleaning the erasing belt 30, the vacuum
With the scraps k from the scrap suction port 50 by the dome method.
Intake air, through the air circulation path 60
70 to the air discharge port 70
The dust is sucked into the dust suction port 50 through the erasing belt 30. Shi
However, this is repeated to circulate the air in the air circulation path 60.
Make a ring.

The invention described in claim 5 is, for example, as follows.
As in the embodiment shown, the book according to claim 1 or 2.
In the board, the backing plate 4 is attached to the erasing belt 30.
0 is provided to drive the backing plate 40 when the written image is erased.
Then, press the erasing belt 30 against the writing surface D.
It becomes, characterized in that.

[0015]

[0016]

[0017]

[0018]

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 shows an external configuration of an office electronic blackboard according to the invention described in claim 1.

Reference numeral 10 in the figure shows the electronic blackboard. The electronic blackboard 10 is movably supported by a stand 11 with casters. The stand 11 is composed of a foot portion 13 having casters 12 on the front and rear lower surfaces, left and right leg portions 14 standing up straight from approximately the middle of the foot portion 13, and a reinforcing portion 26 provided between the leg portions 14.

The electronic blackboard 10 is provided with a horizontally long writing window 16a in front of an outer case 16 having a relatively long thin box shape, and a writing sheet 15 having a writing surface D exposed from the writing window 16a to the outside. Equipped with. Writing sheet 15
Are provided on the left and right sides inside the outer case 16, and are hung between rollers not shown in FIG. In addition, the outer case 16
Is provided with a pen tray 18 along its lower edge, and a printer 17 is attached to the lower right side of the pen tray 18. A writing tool 19 such as a water-based pen is provided on the pen tray 18.
And put the blackboard eraser 22 on.

The writing sheet 15 is endlessly stretched between the left and right driven rollers 21 and the driving roller 20, as can be seen from FIG. 1 showing the internal mechanism of the electronic blackboard 10 viewed from the rear side. A belt 27 is stretched between a driven pulley 23 provided at the lower end of the drive roller 20 and the drive pulley 24 of the sheet drive motor 25. Then,
The drive force of the sheet drive motor 25 is transmitted to the drive roller 20 via the belt 27, and the writing sheet 15 is sent in the directions of arrows A and B in FIG.

Further, on the rear side of the writing sheet 15, an endless erasing belt 30 is provided near the driving roller 20. The erasing belt 30 is stretched between the driven roller 31 and the driving roller 32 provided on both sides in the width direction (vertical direction in FIG. 1) of the writing sheet 15 in a direction orthogonal to the rollers 20 and 21. Then, as shown in FIG.
The other end of the tension spring 33 hooked on the upper edge is hooked on the bearing 34 of the driven roller shaft 31a, and the erasing belt 30 is orthogonal to the feeding directions A and B of the writing sheet 15 as shown in FIG. Stretched in direction C.

Therefore, the belt 39 is stretched between the driven pulley 36 provided at one end of the drive roller 32 and the drive pulley 38 of the belt drive motor 37. Then, the driving force of the belt driving motor 37 is transmitted to the driving roller 32 via the belt 39, and the erasing belt 30 is rotated in the arrow C direction in FIG. And writing sheet 1
The front side erasing belt portion 30a facing 5 can be moved from top to bottom.

Further, according to the fifth aspect of the present invention, as shown in FIG. 3, a backing plate 40 is provided on the back side of the front side erasing belt portion 30a. The backing plate 40 is the erasing belt 30.
A pair of arms 4 which are vertically long plate members having substantially the same width as that of the arm 4 and which are rotatably provided around a vertical axis indicated by reference numeral 42 in FIG.
It is fixed to the tip of 1. Then, the base ends of the arms 41 are connected by a connecting shaft 43, and the operating rod 44a of the solenoid 44 is connected to the connecting shaft 43. Therefore, as shown in FIG. 3, the backing plate 40 is always attached to the erasing belt 30.
On the other hand, the erasing belt 30 is kept in the non-pressing state, and the erasing belt 30 is held at the pressing releasing position separated from the writing sheet 15. A vertically long receiving plate 54 corresponding to the backing plate 40 is provided on the rear surface side of the rear sheet portion 15a of the writing sheet 15.

By the way, as shown in FIG. 1 , a cleaning means 45 for cleaning the erasing belt 30 is provided behind the erasing belt 30.

As the cleaning means, a cleaner 45 for cleaning the erasing belt 30 by a vacuum method is used.

In the cleaner 45, the cleaner body 46 is attached to, for example, the right leg portion 14 of the stand 11 shown in FIG. 2, while the suction nozzle 47 is attached to the rear portion of the outer case 16 as shown in FIG. . And the suction nozzle 4
7 and the cleaner body 46 are connected by a hose 48.

Although not shown, the cleaner body 46 is provided with, for example, a refuse collecting tank, a fan and a fan drive motor in order from the connection side of the hose 48, and the dust collecting tank can be taken out by opening and closing a door (not shown). And Also,
In the waste collecting tank, there is a waste storage bag used in a general household vacuum cleaner. Reference numeral 29 in FIG. 1 is an exhaust port.

As shown in FIG. 3, the suction nozzle 47 has a residue suction port 50 on the opposite side of the connection port 49 with the hose 48. Further, in the suction nozzle 47, the upper side thereof is gradually thinned toward the dust suction port 50, and the blade portion 47a is provided there.
To provide. Then, the tip of the blade portion 47a is applied to the back surface of the rear side erasing belt portion 30b.

On the other hand, in this example , the erasing belt 30 is made of a permeable member such as velvet cloth or felt cloth.

By the way, the invention described in claim 3 is as shown in FIG.
As shown in FIG.
On the back surface side of 0a, a throttle member 55 of the air flow path is provided corresponding to the dust suction port 50. The throttle member 55 is, for example, a plate member provided with air throttle holes 55a.

When the electronic blackboard 10 described above is used, an image such as a picture or a character is written on the writing surface D by using the writing instrument 19. To continue writing a new image without erasing the written image, turn on the power and press the sheet feed button (not shown) to move the sheet drive motor 25.
Is driven, the writing sheet 15 is fed, and the portion in which nothing is written is fed out.

When making a copy of the written image, a copy button (not shown) is pressed to drive the sheet driving motor 25, the writing sheet 15 is sent, the written image is read by the reading means (not shown), and the read contents are read. Is reduced and recorded on the paper by the printer 17.

On the other hand, when the written image is erased, an erase button (not shown) is pressed to drive the belt drive motor 37 and the fan drive motor of the cleaner 45. Then, the erasing belt 30 is conveyed to move the front erasing belt portion 30a from top to bottom. Then, the solenoid 44 is turned on to draw the connecting shaft 43, the arm 41 is rotated about the vertical shaft 42, and the backing plate 40 resists the tension spring 33 and the front side erasing belt portion as shown in FIG. Thirty
The belt portion 30 a is pressed against the back surface of a and pressed against the writing sheet 15. Then, the sheet feed button is pressed to feed the writing sheet 15 in the direction of arrow A in FIG. 1, and the erasing belt 30 rubs off the writing image.

Most of the erased debris of the written image that has been rubbed off adheres to the erasing belt 30, as shown in FIG. 5, except for those that fall onto the pen tray 18. Then, the erased dust k is sucked up by the vacuum cleaner 45.

That is, air is sucked through the erasing belt 30 by the fan. Then, at the time of sucking the air, the air flow passage is narrowed by the air throttle hole 55a of the throttle member 55 to increase the suction force by the fan, and the strong suction force sucks the erased residue k from the erasing belt 30. Further, the erased residue k that cannot be sucked off is scraped off from the erasing belt 30 by the blade portion 47a. And those eraser scrap k
Is put into the waste collecting tank through the hose 48 from the waste suction port 50, and is collected in the waste storage bag.

After erasing the written image, the solenoid 44 is turned off and the backing plate 40 is rotated by the tension spring 33 to return the erasing belt 30 to the original pressing release position as shown in FIG. . Then, the driving of the seat drive motor 25, the belt drive motor 37, and the fan drive motor is stopped.

By the way, in the suction nozzle 47 of the above-mentioned cleaning device 45, in place of the blade portion 47a, for example, as shown in FIG. 6, a rotating brush 53 which comes into contact with the erasing belt 30 may be provided inside. Good. Then, the rotary brush 53 is rotated by, for example, an air suction force of a fan, and the scraps k that cannot be sucked from the erasing belt 30 are scraped by the rotary brush 53.

Further, as shown in FIG. 7, the suction nozzle 47
It is also possible to make the taper taper and form the throttle portion of the air flow path on the dust suction port 50 side at the tip. Then, when cleaning the erasing belt 30, when sucking air through the erasing belt 30, the air passage is narrowed by the throttle portion to increase the suction force by the fan, and the strong suction force erases the scrap k. Suck from Therefore, in this case, the diaphragm member 55 as described above is not required separately.

Next, in the invention described in claim 4 , the cleaner 45 as the cleaning means is constructed as shown in FIG. 8, for example.

In other words, the suction nozzle 47 and the discharge nozzle 56 are arranged so that the dust suction port 50 and the air discharge port 70 face each other on the front surface side and the back surface side with the erasing belt 30 (rear belt portion 30b) described above interposed therebetween. To provide. The nozzles 47 and 56 are supported by the outer case 16, and one ends of the hoses 48 and 58 are connected to the respective connection ports 49 and 57. Then, the other ends of the hoses 48 and 58 are connected to the intake port 61 and the exhaust port 62 of the cleaner body 46, respectively, and the cleaner 45 is provided with the air circulation path 60.

The cleaner main body 46 is provided with a mesh-shaped refuse collecting tank 63, a fan 64, and a fan drive motor 65 in that order in the air flow direction.

During cleaning of the erasing belt 30, when the fan driving motor 65 is driven to operate the fan 64, air is sucked from the dust suction port 50 and the sucked air is passed through the air circulation path 60 to the air discharge port 70. To the erasing belt 30 as well as discharging from the air discharge port 70
Through the dust suction port 50. Then, this is repeated to circulate the air in the air circulation path 60 in the direction of arrow E in FIG.

When the air is sucked through the erasing belt 30, the erasing residue k attached to the surface of the erasing belt 30.
Is sucked, put into the waste collecting tank 63 through the hose 48, and is collected in the waste storing bag therein.

By the way, in the above-mentioned embodiment, the cleaner 45 is used as the cleaning means for the eraser residue k. However, as shown in FIG. 9, for example, a rotating brush 67 is used and the erasing belt is rotated by the rotation of the rotating brush 67. It is also possible to scrape off the erased scraps k from 30 onto the pen tray 18.

Further, for example, as shown in FIG. 10, a cleaning blade 68 is used as a cleaning means,
The tip of the blade 68 may be applied to the erasing belt 30 so that the erased residue k is scraped off from the erasing belt 30 onto the pen tray 18.

The erasing belt 30 as described above may be pressed against the driven roller 21 via the writing sheet 15 as shown in FIG. In that case, since the driven roller 21 functions as a backing member for the erasing belt 30 and the writing sheet 15, there is an advantage that the receiving plate 54 as described above is not required.

By the way, the electronic blackboard 10 shown above is a writing board that pushes the erasing belt 30 side against the writing surface D at a predetermined position and erases the writing image while sending the writing surface D side. However, some writing boards have a writing surface fixedly on the board, such as a so-called message board or a bulletin board, in addition to the electronic blackboard provided with the writing surface side capable of being fed. Therefore, in such a writing board whose writing surface does not move, for example, when the above-described erasing belt 30 is provided, it is necessary to allow the belt 30 side to move along the writing surface.

Therefore, according to the second aspect of the invention, in the writing board whose writing surface does not move, for example, the erasing belt 30 hung between the driving roller 32 and the driven roller 31.
Are provided so as to be movable along the writing surface D. Then, the erasing belt 30 is moved in a direction C orthogonal to the moving directions A and B.
Make a structure to extend to.

In this writing board, however, when the written image is erased, the erasing belt 3 is placed at a desired position on the writing surface D.
While pressing 0 and transporting, the erasing belt 30 is moved along the writing surface D, and the writing image is rubbed off by the erasing belt 30.

[0052]

Therefore, according to the first aspect of the present invention, when the written image is erased, the erasing belt is pressed against the writing surface at a predetermined position, and the writing surface is fed while being conveyed at the predetermined position. In a writing board that erases written images, the erasing belt is hung between multiple rollers and stretched in a direction orthogonal to the feeding direction of the writing surface, so the rollers used to stretch the erasing belt can be relatively short. Also, the erasing belt itself that is hung between the rollers can be relatively small, and as a result, the cost of the parts required to stretch the erasing belt can be reduced and the overall cost can be reduced.

According to the second aspect of the invention, when erasing a written image, the erasing belt is moved along the writing surface while pressing and carrying the erasing belt against the writing surface to rub the written image. In the erasing writing board, the erasing belt is hung between a plurality of rollers and stretched in the direction orthogonal to the moving direction of the erasing belt, so that the roller used for the erasing belt can be relatively short, and between the rollers. The erasing belt itself to be applied can be relatively small, and as a result, the cost of the parts required to stretch the erasing belt can be reduced and the overall cost can be reduced.

[0054]

According to the fifth aspect of the present invention, when the written image is erased, the erasing belt is backed by the backing plate and pressed against the writing surface. The structure is simple compared to the case where the whole is pressed, and the cost can be reduced accordingly.

According to the invention described in claim 1 or 2 ,
By cleaning the erasing belt with the cleaning unit when erasing the written image, it is possible to prevent the erasing dust from adhering to the erasing belt and deteriorating the image erasing performance.

According to the invention described in claim 1 or 2 ,
Since the cleaning means is a vacuum system that absorbs the erased dust from the erase belt, the eraser can be effectively removed from the erase belt without being scattered.
Further, the erasing belt is made of a material having air permeability, and when the air is sucked, a flow of air is formed from the back side of the erasing belt to the cleaning means on the front side. Can be sucked up.

According to the third aspect of the present invention, since an air throttle hole for narrowing the air passage is provided on the back side opposite to the dust suction port provided on the front side of the erasing belt, the erase belt is erased when sucked. The flow velocity of the air flowing into the dust suction port through the belt is increased, so that the erase dust can be sucked from the erasing belt with a relatively strong suction.

According to the fourth aspect of the present invention, the cleaning means is provided with an air circulation path with the dust suction port and the air discharge port facing each other on the front surface side and the back surface side with the erasing belt interposed therebetween. When sucking air with the vacuum type cleaning means, the suction force can be increased to effectively remove the erased dust from the erasing belt. Further, since the exhaust port is not provided, noise leakage from the exhaust port can be reduced and noise can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing an internal mechanism of an electronic whiteboard for business use according to the first aspect of the present invention as viewed from the back side.

FIG. 2 is an external perspective view of the office electronic blackboard.

FIG. 3 is a vertical cross-sectional view showing the structure on the rear side of the writing sheet in a state where the erase belt is not pressed.

FIG. 4 is a perspective view showing a pressing mechanism of the erasing belt.

FIG. 5 is a vertical cross-sectional view showing the structure on the rear side of the writing sheet in a state where the erasing belt is pressed.

FIG. 6 is a vertical cross-sectional view showing a state in which erased debris is sucked from an erasing belt using a suction nozzle equipped with a rotating brush.

FIG. 7 is a side view showing a state in which erased debris is sucked from the erasing belt using a tapered suction nozzle.

FIG. 8 is a vertical cross-sectional view showing a cleaner provided for the office electronic blackboard according to the invention of claim 4 , and showing a state where the cleaner removes erased dust through the air circulation path.

FIG. 9 is a side view showing a state in which a rotating brush is used as a cleaning unit, and erase dust is scraped off from the erasing belt by the rotating brush.

FIG. 10 is a side view showing a state in which a cleaning blade is used as a cleaning unit, and the blade scrapes off eraser debris from the erasing belt.

FIG. 11 is a perspective view schematically showing an office electronic blackboard in which an erasing belt is pressed against a driven roller via a writing sheet when erasing a written image.

FIG. 12 is a perspective view schematically showing a conventional office electronic blackboard.

[Explanation of symbols]

10 Office Electronic Blackboard (Writing Board) 15 Writing Sheet 19 Writing Tool 30 Erase Belt 31/32 Roller 40 Backing Plate 45 Cleaner (Cleaning Means) 50 Dust Suction Port 55 Throttling Member 55a Air Throttling Hole 60 Air Circulation Path 67 Rotating Brush (Cleaning Means) 68 Cleaning Blade (Cleaning Means) 70 Air Discharge Ports A / B Feeding Direction C of Writing Surface C Orthogonal Direction D Writing Surface k Erasing Dust

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B43L 1/04-1/10 B43L 21/02

Claims (5)

(57) [Claims] 1. When writing an image on a writing surface with a writing instrument and then erasing the written image, an erasing belt is pressed against the writing surface at a predetermined position and the erasing belt is conveyed at the predetermined position. while feeding the writing surface, the writing board extinguish rubbing written image, the erase belt, while to pass tension in a direction perpendicular to the feeding direction of the writing surface over between a plurality of rollers, adhering to the erase belt A cleaner that removes eraser dust
And a cleaning means for cleaning the erase belt attached to the erasing belt.
In addition to using a vacuum system that absorbs dust , make sure that the erasing belt is made of a breathable material.
That, writing board. 2. When an image is written on a fixed writing surface with a writing instrument and then the written image is erased, an erasing belt is pressed against the writing surface and the erasing bell is pressed.
In a writing board that moves the erasing belt along the writing surface while transporting a sheet to rub the written image, the erasing belt is hung between a plurality of rollers, and a direction orthogonal to the moving direction of the erasing belt. while be passed firmness, Kleene to remove off debris adhering to the erase belt
And a cleaning means for cleaning the erase belt attached to the erasing belt.
In addition to using a vacuum system that absorbs dust , make sure that the erasing belt is made of a breathable material.
That, writing board. 3. The vacuum on the front side of the erasing belt.
While providing a dust suction port of the cleaning method of the system
There is an empty space on the back side of the erasing belt corresponding to the dust suction port.
The writing board according to claim 1 or 2, wherein an air throttling hole of a throttling member that throttles an air flow path is provided . 4. A front side and a back side with the erasing belt interposed therebetween.
Place the dust suction port and air discharge port on the
The writing board according to claim 1 , wherein an air circulation path is provided in the cleaning means . 5. Writing on the backing plate provided on the erasing belt
When the image is erased, the backing plate is driven to drive the erase belt.
The writing board according to claim 1, wherein the writing board is pressed against the writing surface .