JP3328504B2 - Device for erasing written contents on recording surface - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a blackboard
The present invention relates to a device for erasing written contents on a recording surface such as a character, a picture, a table or a graph on a recording surface such as a white board, a bulletin board, a message board, and an electronic blackboard. More specifically, the present invention relates to a method in which an eraser is pressed against a recording surface, and the eraser is slid in contact with the recording surface by a relative movement with respect to the recording surface to erase written contents on the recording surface.

[0002]

2. Description of the Related Art Conventionally, for example, in an electronic blackboard, a driving roller 1 and a driven roller 2 are provided as shown in FIG.
There is a configuration in which an endless recording medium 3 is wrapped therebetween to form a recording surface a on the surface.

[0003] When using the electronic blackboard,
Using a writing instrument such as a marker ink pen, a character, picture, table, graph, or the like is written on the recording surface a. When recording the written content on a sheet, the recording medium 3 is conveyed and the written content on the recording surface a is read by a reading mechanism (not shown).
Then, the signal from the reading mechanism section is input to a printer (not shown), and is reduced and recorded on a sheet of paper, and printed out.

Some electronic blackboards include a write-content erasing device A for erasing written content written on a recording surface a, as shown in FIG. A support member indicated by reference numeral 5 in the figure includes a support shaft 6 serving as a rotation fulcrum, a pair of upper and lower support plates 7.8, and a connection shaft 9 connecting one end of the support plates 7.8. An erasing body 10 is rotatably supported and provided at the other ends of the plates 7 and 8. The erasing member 10 has a roller shape, and a brush 11 as a sliding contact member is provided in a spiral shape on the outer periphery thereof, and rotation from a roller driving motor M is transmitted through a belt 12. The connecting shaft 9 of the support 5 is connected to the tip of the operating rod of the solenoid 13.

When erasing the written contents on the recording surface a, the solenoid 13 is operated to pull the connecting shaft 9, and the support 5 is rotated about the support shaft 6 to record the brush 11 of the erasing body 10. Press against surface a. And the recording medium 3
Is transported in the direction of the arrow in FIG.
Is driven to rotate the eraser 10, and the brush 11 erases the written contents on the recording surface a.

[0006]

However, in such a conventional apparatus for erasing written contents on a recording surface, the erasing body 10 is not used.
Thus, there is a problem that erased scraps generated when the written contents on the recording surface a are erased are scattered around.

SUMMARY OF THE INVENTION It is an object of the present invention to prevent an eraser generated at the time of erasure from scattering around in the above-described apparatus for erasing written contents on a recording surface.

[0008]

For this reason, the invention described in claim 1 has, for example, the following features:
The eraser 57 presses the eraser 57 against a recording surface a to be conveyed at a fixed position, and erases the written content thereon by the relative movement with respect to the recording surface a. A slidable contact body 59 slidably in contact with the erasing body 57 and in contact with the recording surface a to erase written contents on the recording surface a;
A base body 58 that supports the inside of the body and has a suction space 58a therein and communicates the inside and outside of the body with each other through an intake hole 58b is provided .
The pressing position to press against a and the pressing to release the pressing
The suction space 58a is made movable to the release position.
And a dust collecting device 65 that sucks air and sucks out scum through the suction hole 58b.

According to the first aspect of the present invention, at the time of erasing, the erasing member 57 is pressed against the recording surface a to be conveyed at a fixed position, and the recording surface a is moved by the sliding contact member 59 by relative movement with respect to the recording surface a. Erase the contents written above. At that time, the dust collector 6
5 is operated to put the generated scum into the suction space 58a through the suction hole 58b and suck it into the dust collecting device 65.

According to a second aspect of the present invention, there is provided an apparatus for erasing write contents on a recording surface a according to the first aspect, wherein the base body 58 is formed in a cylindrical shape, for example, as in the following embodiment. The suction space 58a is formed therein, and one end of the drive shaft 53 is press-fitted and sealed at one end of the base body 58 from the axial direction, and the fixed shaft 61 is inserted at the other end of the base body 58 from the axial direction. The base body 58 is rotatably supported via a sealed bearing 60, and the fixed shaft 61 is provided with a through hole 61b for communicating the suction space 58a and the dust collecting device 65. .

According to the second aspect of the present invention, at the time of erasing, the rotation of the drive shaft 53 is transmitted to the base body 58 to erase the erasing body 5.
7 is rotated, and the written content on the recording surface a is erased by the sliding contact body 59. At this time, the generated debris is efficiently sucked into the suction space 58a through the suction hole 58b, and
It leads to the dust collecting device 65 through 1b.

[0012] According to a third aspect of the invention, for example as in the embodiment shown below, the contents written erasing apparatus B on the recording surface a according to claim 1 or 2, wherein the erase body
Consisting includes a cam mechanism C for releasing gradually the recording surface the erasing member 57 from the recording surface a while continuing the relative movement of the writing contents after the erase completion on a 57, characterized in that.

According to the third aspect of the present invention, the cam mechanism C is driven, and after the erasure is completed, the pressing force of the erasure body 57 on the recording surface a is gradually reduced while the relative movement is continued.

[0014]

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 11 shows a leg-supporting type electronic blackboard provided with an apparatus for erasing written contents on a recording surface according to an embodiment of the present invention.

The electronic blackboard indicated by the reference numeral 20 in the figure is supported horizontally with its legs 21 upright. The frame case 22 of the electronic blackboard 20 has a flat rectangular box shape, and has a large window hole 22a at the front. Then, a part of the endless sheet-shaped recording medium 23 which is stretched in the frame case 22 as described later is exposed from the window hole 22a, and a part of the recording surface a is flatly exposed there.

In front of the frame case 22, an elongated tray 25 on which a writing instrument 24 or the like is placed is attached along the lower edge. As the writing implement 24, a marker ink pen or the like for writing characters and pictures on the recording surface a is used.

Below the frame case 22, a printer 27 having a paper receiver 26 in front and two storage cases 28 and 29 are sequentially mounted. On the other hand, a switch group 30 is provided on one side edge of the frame case 22. The switch group 30 includes a transport switch for transporting the recording medium 23 described above, a read switch for reading written contents on the recording medium 23, and the like.

In the frame case 22, a driving roller 33 and a driven roller 34 are provided on the left and right sides in parallel with each other as shown in FIG. As the driving roller 33, a rubber roller made of, for example, chloroprene rubber or silicone rubber having a relatively large coefficient of friction and high elasticity is used. The above-mentioned endless recording medium 23 is stretched between the rollers 33 and 34, and the driven roller 34 is urged by a spring (not shown) to urge the rollers 33 and 34.
It stretches between 34. Then, the transport switch of the switch group 30 described above is operated, the rotation from the drive motor 35 is transmitted via the belt 36, the drive roller 33 is rotated, and the recording medium 23 is rotated while the driven roller 34 is driven. It can be transported in the left and right direction.

A reading mechanism 37 is provided in the frame case 22 as shown in FIG. The reading mechanism 37 reads the written contents on the recording surface a while the recording medium 23 is being conveyed.
9, a lens 40, a photoelectric conversion element 41, and the like.

When using this electronic blackboard,
The writing tool 24 is used to write characters and pictures on the recording surface a. When recording the written contents on a sheet, the read switch in the switch group 30 is operated and the recording medium 23 is read.
And the reading mechanism 37 reads the written content on the recording surface a. Then, a signal from the reading mechanism unit 37 is input to the printer 27 via the control unit 31, and the read content is reduced and recorded on a sheet provided in the printer 27.
Print out to

By the way, the device for erasing written contents on the recording surface provided in the above-mentioned electronic blackboard has the structure shown in FIGS. 1 and 2 in detail. FIG. 2 shows a peripheral portion of the writing content erasing device B when the inside of the electronic blackboard is viewed from the back side.

Reference numeral 45 in FIG. 2 denotes a support frame. The support frame 45 is provided with side plates 45a opposed to each other by bending both ends, and mounting pieces 45b are provided by bending the lower ends of the side plates 45a outward in the drawing. Then, the mounting piece 45b is mounted on the inner surface of the frame case 22 via the slide unit 46,
On the outside of the side parallel to it.

As shown in FIG. 3, the slide unit 46 comprises an outer rail member 47 having small raised edges 47a on both sides, a slider member 48 slidably housed in the outer rail member 47, and It comprises a plurality of balls 49 housed between the edge 47a of the rail member 47 and the slider member 48. Then, as shown in FIG. 2, the outer rail member 47 is fixed to the inner surface of the frame case 22, and the mounting piece 45 b of the support frame 45 is screwed to the slider member 48.

As shown in FIG. 2, the drive motor 5 is mounted on the inner surface of one side plate 45a of the support frame 45 described above.
0 is attached. Then, the motor shaft protrudes outside through the side plate portion 45a, and one of the belts 51 is wound around a motor pulley (not shown) on the motor shaft, and the other of the belts 51 is wound around a driving pulley 52.

As shown in FIG. 4, the driving pulley 52 is attached to one end of a driving shaft 53, and a washer 54 is attached to prevent the pulley 52 from coming off. At the other end of the drive shaft 53, a boss portion 53a having an enlarged diameter is integrally provided. The drive shaft 53 is rotatably supported by a side plate 45a via a bearing 55, and the boss 53a is attached to one end of the erasing body 57.

The erasing member 57 includes a base member 58 and a sliding member 59.
Consists of The base body 58 is formed in a slightly elongated cylindrical shape, and has a suction space 58a therein and a plurality of intake holes 58b penetrating inside and outside. The sliding body 59 is formed by bundling a large number of brush bristles made of an antistatic member such as carbon fiber in a straight line, and is provided in the axial direction at intervals in the circumferential direction of the base body 58 as shown in FIG. . Then, as shown in FIG. 4, a boss 53a of the drive shaft 53 is press-fitted into one end of the base body 58 from the axial direction and sealed, while one end 61a of the fixed shaft 61 is axially inserted into the other end of the base body 58 from the axial direction. Is inserted by press-fitting and supported by the drive shaft 53 and the fixed shaft 61, and the eraser 57 is provided outside the drive roller 33 in parallel therewith.

As shown in FIG. 6, the seal bearing 60 is provided with annular seal members 62 at both ends in the axial direction, and presses the seal members 62 against the outer periphery of one end 61 a of the fixed shaft 61. On the other hand, the fixed shaft 61 is made of, for example, a metal member. As shown in FIG. 4, a through hole 61b is provided at the center in the axial direction, and the through hole 61b is aligned with a window hole 45c provided in the other side plate portion 45a. It is fixed to the side plate portion 45a with screws 63.

Thus, the fixed shaft 61 is passed through the window hole 45c.
The one end of the suction pipe 64 is screwed into the through hole 61b. On the other hand, the other end of the suction pipe 64 is connected to a dust collecting device 65 fixed to the inner surface of the frame case 22 as shown in FIG.
Is inserted into the outer case 66.

The outside case 66 of the dust collecting device 65 is provided with a suction fan and a dust collecting bag (not shown).

By the way, one end of the extension coil spring 67 is hung near both ends of the support frame 45 described above. The other ends of the tension coil springs 67 are hooked on locking projections 68 raised from the inner surface of the frame case 22, respectively. Then, the erasing body 57 is always held at the pressing release position separated from the recording medium 23. Also, the cam mechanism C
Are provided adjacent to each other.

The cam mechanism C has a cam drive motor 70 and a cam member 69 mounted on the motor shaft.

When erasing the contents written on the electronic blackboard, the erase switch of the switch group 30 is depressed to simultaneously drive the drive motor 50, the suction fan (not shown) of the dust collector 65, and the cam drive motor 70. Drive.

Then, the rotation from the drive motor 50 is transmitted via the belt 51 to rotate the erasing body 57 counterclockwise in FIG. In addition, the suction force of the suction fan causes the suction hole 58b to move.
Inhale air from Further, the cam member 69 is rotated in the direction of arrow b in FIG.

Then, with the rotation of the cam member 69, the support frame 45 is pushed against the extension coil spring 67. Then, the slider member 48 slides in the outer rail member 47 to move the support frame 45 toward the recording medium 23, and the recording medium 2
When the eraser 57 is pressed against the recording surface a of No. 3, the state shown in FIG. 7 is obtained.

Thereafter, the rotation from the drive motor 35 is transmitted via the belt 36 to rotate the drive roller 33, and the recording medium 23 is conveyed in the direction of arrow c in FIG. Then, the written content on the recording surface a is erased by the sliding contact body 59 of the erasing body 57.

At that time, the generated scum is sucked into the suction space 58a through the suction hole 58b together with the air, and is further collected in the dust bag of the dust collector 65 through the through hole 61b and the suction pipe 64.

After erasing the written contents on the recording surface a, the cam drive motor 70 is driven in the reverse direction to rotate the cam member 69.
Is rotated in the direction of arrow d in FIG. Then, the recording medium 23
The cam member 69 is maintained while the relative movement between the
8, the erasing body 57 is gradually released from the recording medium 23 from the pressing position indicated by the solid line in FIG. 8 to the pressing release position indicated by the dashed line. Then, the pressing force of the erasing body 57 gradually decreases, and the pressing state on the recording surface a changes, and the erasing body 57 is pressed.
In this way, the debris blocked by the above is sucked without being left on the recording surface a. Then, after the eraser 57 is moved to the pressing release position, the driving of the drive motor 50, the suction fan, and the cam drive motor 70 described above is stopped.

According to the second aspect of the present invention, as shown in the above-described embodiment of FIGS. 1 to 8, the base body 58 is formed in a cylindrical shape to form a suction space 58a therein, and the base body 58 is formed. One end of the drive shaft 53 is press-fitted and sealed in one end of the base body 58 from the axial direction, and the fixed shaft 61 is inserted in the other end of the base body 58 from the axial direction, and the base body 58 is inserted through the sealed bearing 60.
Are rotatably supported, and the fixed shaft 61 is provided with a through-hole 61b communicating the suction space 58a and the dust collecting device 65.

At the time of erasing, the rotation of the drive shaft 53 is transmitted to the base body 58 to rotate the erasing body 57, and the written content on the recording surface a is erased by the sliding contact body 59. At this time, the generated debris is efficiently passed through the suction hole 58b to the suction space 58b.
a, and is guided to the dust collecting device 65 through the through hole 61b.

Further, according to the third aspect of the present invention, as shown in the above-described embodiments of FIGS. 1 to 8, after the erasure of the written contents on the recording surface a is completed, the relative movement of the recording surface a is continued. And a cam mechanism C for gradually removing the erasing body 57 from the eccentric body.

Then, the cam mechanism C is driven, and after the erasure is completed, the pressing force of the erasure body 57 on the recording surface a is gradually reduced while continuing the relative movement.

In the embodiments shown in FIGS. 1 to 8 described above, the pressing state of the erasing body 57 on the recording surface a is gradually reduced while the relative movement is continued after the erasing is completed, and the pressing state is changed. However, changing the relative moving direction of the recording surface a and erase member 57 the recording surface a after erase complete with extinction Sakarada 57
Good . That is, after erasing the recording surface a by the erasing body 57, the driving motor 35 is driven to rotate in the reverse direction to drive the driving roller 33 in FIG.
As shown in the figure, the recording medium 23 is conveyed in the direction indicated by the arrow f in FIG. Thereafter, the driving roller 33 is normally rotated in the direction opposite to the direction indicated by the arrow in the figure. This is repeated once or more to change the pressing state of the erasing body 57 against the recording surface a, and the erased waste blocked by the erasing body 57 is sucked without remaining on the recording surface a.

In the embodiment shown in FIG. 9, the moving direction of the recording surface a is changed after the erasing of the recording surface a by the erasing member 57 is completed. However, although illustration is omitted, after the erasing of the recording surface a by the erasing body 57,
May be changed.

[0045]

In all of the illustrated embodiments described above, the recording surface a and the eraser 57 are rotated together to erase the written contents. However, if the recording surface a and the erasing body 57 move relative to each other, the written contents can be erased, so that only the recording surface a may be rotated. Further, the contents of writing may be erased not only by rotating them but also by causing the erasing body 57 to reciprocate linearly.

Further, in all the illustrated embodiments described above, the erasing member 57 has the sliding contact members 59 provided in the axial direction at intervals in the circumferential direction of the cylindrical base member 58. But,
For example, as shown in FIG. 10, the erasing body 57 may have a configuration in which a sliding contact body 59 is spirally provided on the outer periphery of a cylindrical base body 58.

Further, the base body 58 of the erasing body 57 is not limited to a cylindrical shape, and various shapes are conceivable. For the sliding contact body 59 of the erasing body 57, for example, a felt, a sponge, or the like may be used instead of the brush hair. Can be.

[0049]

As described above, according to the first aspect of the present invention, at the time of erasing the written contents on the recording surface, the sliding member of the erasing body is fixed on the recording surface to be conveyed. And erase the written contents on the recording surface by sliding the eraser by relative movement with respect to the recording surface.At that time, the dust collecting device is activated, and the generated scum is introduced into the suction space through the suction hole. Since the suction is performed, it is possible to prevent the erase dust from scattering around when erasing. Further, the size of the entire apparatus can be reduced as compared with a case where dust is collected by sucking off scum from the outside of the erasing body.

According to the second aspect of the present invention, one end of the drive shaft is press-fitted and sealed at one end of the base body, and a fixed shaft is inserted at the other end of the base body and rotatably supported via a sealed bearing. As a result, it is possible to prevent erase dust from entering the rotating part and cause rotation failure, prevent air from flowing from both ends of the base body, and suck air exclusively through the intake hole to efficiently suck the erase waste. it can.

According to the third aspect of the present invention, after the erasing is completed, the suction state is continued, and the pressing force of the erasing body against the recording surface is gradually reduced while the relative movement between the erasing body and the recording surface is continued. the in can pressing state of the erasing member for record surface is changed, removed to without leaving off debris that dammed erase member on the recording surface.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an internal mechanism of an electronic blackboard provided with a device for erasing written contents on a recording surface according to the first aspect of the present invention.

FIG. 2 is a perspective view of a peripheral portion of a writing content erasing device, showing the inside of the electronic blackboard as viewed from the back side.

FIG. 3 is a partially cutaway perspective view of a slide unit provided in the writing content erasing device.

FIG. 4 is a longitudinal sectional view of an erasing body portion of the writing contents erasing device.

FIG. 5 is a partial external perspective view of the eraser itself.

FIG. 6 is a vertical sectional view of the other end of the eraser.

FIG. 7 is a perspective view of the peripheral portion of the writing content erasing device when the erasing body is at a pressing position.

FIG. 8 is an explanatory diagram illustrating that an erasing body is gradually released from a recording surface after erasing is completed.

FIG. 9 is a schematic configuration diagram of a part of an internal mechanism of an electronic blackboard provided with a device for erasing written contents on a recording surface according to the invention of claim 4;

FIG. 10 is a partial external perspective view of another erasing body used in the writing contents erasing device of the present invention.

FIG. 11 is an external perspective view of the entire electronic blackboard.

FIG. 12 is a partial perspective view of an internal mechanism of an electronic blackboard provided with a conventional device for erasing written contents on a recording surface.

[Explanation of symbols]

 B Writing content erasing device C Cam mechanism a Recording surface 53 Drive shaft 57 Eraser 58 Base body 58a Suction space 58b Suction hole 59 Sliding body 60 Sealed bearing 61 Fixed shaft 61b Through hole 65 Dust collector

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B43L 21/02 B43L 1/04

Claims (3)

(57) [Claims] An eraser is pressed against a recording surface to be conveyed at a fixed position, and written on the recording surface is erased by the eraser by relative movement with respect to the recording surface. In the content erasing device, a slidable body that slides on the recording surface and wipes out the written content on the recording surface, and has a suction space inside to support the erasing body, and a suction space inside and outside through an intake hole. A base body that communicates with the erasing body.
A pressing position for pressing a contact body against the recording surface and the pressing position
A writing device for erasing written contents on a recording surface, comprising: a dust collection device that is movable to a pressing release position for releasing the air, and sucks air in the suction space to suck out erased dust through the suction hole. 2. The base body is formed in a cylindrical shape to form the suction space therein, and one end of the drive shaft is press-fitted and sealed at one end of the base body from the axial direction, while a shaft is provided at the other end of the base body. 2. A fixed shaft is inserted from the direction to rotatably support the base body through a sealed bearing, and the fixed shaft is provided with a through-hole communicating the suction space and the dust collecting device. 3. A device for erasing written contents on a recording surface according to claim 1. 3. A cam mechanism for gradually separating the eraser from the recording surface while continuing the relative movement after erasing the written contents on the recording surface by the eraser. 3. A device for erasing written contents on a recording surface according to item 2.