JP2001080287A - Powder receiver, and notice board having powder receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a powder receiver which can receive eraser dregs surely corresponding to the width of a notice board, and the notice board having the powder receiver. SOLUTION: In a notice board, a main powder receiver 2 is attached attachably/detachably to an electronic black board E (notice board) is formed in a hollow shape, a subordinate powder receiver 3 is inserted into the hollow part to be supported by the main powder receiver 2, and a powder receiver 1 can be expanded/contracted freely in the longitudinal direction by sliding the subordinate powder receiver 3 in the main powder receiver 2. In this way, since the length of the powder receiver 1 can be increased/decreased freely corresponding to the width of the board E, eraser dregs can be received surely.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powder tray and a bulletin board provided with a powder tray used for receiving powdered erased dust generated from a bulletin board such as a blackboard, whiteboard, and electronic blackboard. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powder tray capable of reliably receiving erased waste according to its width and a bulletin board provided with the powder tray.

[0002]

2. Description of the Related Art In bulletin boards such as blackboards, whiteboards, and electronic blackboards, when the description on the surface to be described is completed and the description is erased, powdery eraser dust is generated. If the eraser falls from the bulletin board to the floor, the floor around the bulletin board is significantly soiled. Therefore, a powder receiver for receiving the eraser is disposed below the bulletin board. Conventional powder trays have been of a fixed type adapted to the width of each bulletin board.

[0003]

However, in the case where an eraser from a bulletin board is received by such a configuration, the width of the bulletin board is not limited to one because the vertical and horizontal types of the bulletin board are assumed to be shared. Can occur. Therefore, if the length of the powder tray is set according to the vertical use of the bulletin board, the length of the powder tray will be insufficient when the bulletin board is used horizontally, and the eraser dust will fall to the floor. Conversely, conversely, if the length of the dust pan is set according to the horizontal use of the bulletin board, the length of the powder pan becomes longer than the width of the bulletin board when the bulletin board is used vertically, There is a problem that extra space is required.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and it is an object of the present invention to provide a powder tray and a bulletin board provided with the powder tray, which can surely receive erased waste according to the width of the bulletin board. It is an object.

[0005]

In order to achieve this object, a powder receiver according to the first aspect of the present invention removes powdery scum generated from a bulletin board capable of writing on a surface to be described and erasing the description. In order to receive the main powder receiver, the main powder receiver is disposed below the bulletin board, is supported by the main powder receiver attached to the bulletin board, and can expand and contract in the longitudinal direction of the main powder receiver. It has an auxiliary powder receiver.

According to the first aspect of the present invention, the auxiliary powder receiver that receives the eraser dust is supported by the main powder receiver that also receives the eraser waste, and expands and contracts in the longitudinal direction of the main powder receiver. You.

The powder receiver according to claim 2 is the powder receiver according to claim 1, wherein one of the main powder receiver and the auxiliary powder receiver is
The secondary powder receiver is formed in a hollow shape, and the auxiliary powder receiver is disposed on both longitudinal sides of the main powder receiver, and the other of the main powder receiver or the auxiliary powder receiver is the hollow main powder receiver. Alternatively, it is formed in a shape that can be inserted into one of the sub powder receivers.

According to the second aspect of the present invention, the powder receiver operates in the same manner as the first aspect of the present invention, and furthermore, the main powder receiver or the auxiliary powder receivers disposed on both longitudinal sides of the main powder receiver. The other is inserted into one of the hollow main powder receiver and the auxiliary powder receiver.

According to a third aspect of the present invention, in the powder receiver of the first or second aspect, the main powder receiver is formed in a hollow shape, and a gear is rotatable inside the main powder receiver. Each of the sub powder receivers disposed on both sides of the main powder receiver is formed with a rack engraved with teeth engageable with the gear.

According to the third aspect of the present invention, the powder receiver operates in the same manner as the powder receiver according to the first or second aspect. When one of the auxiliary powder receivers is expanded or contracted, the gear attached to the inside of the main powder receiver is rotated by the rack of the auxiliary powder receiver, and the rotation of the gear is transmitted to the rack of the other auxiliary powder receiver. The auxiliary powder pan is expanded and contracted.

[0011] The powder receiver according to claim 4 is the powder receiver according to claims 1 to 3.
In the powder receiver according to any one of the above, the main powder receiver,
It is detachably attached to the bulletin board.

According to a fifth aspect of the present invention, there is provided the powder receiver according to the first to fourth aspects.
In the powder receiver according to any of the above, a projection is formed on one of the main powder receiver and the sub powder receiver, and a groove or a groove engageable with the projection is formed on the other of the main powder receiver and the sub powder receiver. A hole is formed.

According to the fifth aspect of the present invention, the powder receiver operates in the same manner as the powder receiver according to any one of the first to fourth aspects, and furthermore, the protrusion formed on one of the main powder receiver and the auxiliary powder receiver is provided. ,
It is engaged with a groove or a hole formed in the other of the main powder receiver and the sub powder receiver.

[0014] The powder receiver according to claim 6 is characterized in that:
In the powder receiver described in any one of the above, a convex portion is formed on the upper surface of the bottom portion that receives eraser dust in the main powder receiver and the sub powder receiver, substantially in parallel with each longitudinal direction.

According to the seventh aspect of the present invention, there is provided a powder receiver according to the first to sixth aspects.
In the powder receiver according to any one of the above, a wall protruding from the bottom portion is formed on both sides of a bottom portion of the sub powder receiver, and an end of the sub powder receiver on an opposite side of the main powder receiver. Has an end wall formed in a substantially frame shape integrally with the wall.

The bulletin board according to the eighth aspect is the bulletin board according to the first to seventh aspects.
And a fitting which can be attached in the short side direction and the long side direction.

According to a ninth aspect of the present invention, there is provided the bulletin board according to the eighth aspect, wherein the bulletin board includes a printer for printing an image described on a surface to be described on paper, and the main powder receiver includes the printer. Mounted above the printer.

According to a tenth aspect of the present invention, in the bulletin board according to the eighth or ninth aspect, a mounting frame for attaching the powder receiver to the bulletin board is detachably attached to the bulletin board. I have.

The bulletin board according to an eleventh aspect is the bulletin board according to any one of the eighth to tenth aspects, wherein the mounting frame has a joint for detachably attaching the printer.

According to the bulletin board according to the eleventh aspect, in addition to the same operation as the bulletin board according to any one of the eighth to tenth aspects, the printer can be detachably mounted on the joint provided on the mounting frame. Be worn.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. In a bulletin board such as a blackboard, a whiteboard, or an electronic blackboard, when the description on the surface to be described is completed and the description is erased, a powdery eraser dust is generated. Is used to prevent the user from falling below the bulletin board. In this embodiment, a description will be given of a powder receiver 1 attached to an electronic blackboard E. The powder receiver 1 is composed of a main powder receiver 2 attached to the electronic blackboard E and sub powder receivers 3 arranged on both sides thereof and capable of extending and contracting in the longitudinal direction of the powder receiver 1.

FIG. 1 is an exploded perspective view schematically showing an electronic blackboard E to which the powder receiver 1 of this embodiment is attached. In the electronic blackboard E, a white sheet S whose both ends are wound around a take-up roller (not shown) is provided inside an outer frame F formed in a substantially rectangular frame shape. Characters and figures can be written on the white sheet S using marker ink (not shown) or the like, and the descriptions can be erased by an eraser (not shown).

On the back surface of the electronic blackboard E, a total of four mounting tools T for hanging the electronic blackboard E on the wall surface are fixed. The electronic blackboard E of the present embodiment is configured so that it can be shared by both the vertical type and the horizontal type. Therefore, when the electronic whiteboard E is used as a vertical type, the two mounting tools T on the short side (right side in FIG. 1) are used. When used as a horizontal type, the long side (upper side in FIG. 1)
Are used. On the wall surface side, a substantially projecting support member (not shown) is fixed at a position corresponding to the fixture T, and a hook-shaped fixture T is attached to the support member.
, The electronic blackboard E can be hung on the wall surface. FIG. 1 shows a case where the electronic blackboard E is used as a horizontal type.

On the back of the electronic blackboard E, an electronic blackboard E
L for allowing the stand to stand on its own by a stand (not shown)
A total of four stand fixtures U formed in a letter shape are fixed. As in the case where the electronic blackboard is hung on a wall, the electronic blackboard E is configured so that it can be used in both the vertical type and the horizontal type. When the device U is used as a horizontal type, two stand mounting devices U on the long side (the lower side in FIG. 1) are used.

A white sheet S is provided below the electronic blackboard E.
A printer P for printing the characters and figures described above on predetermined paper is provided. When characters and figures described on the white sheet S are printed by the printer P,
The take-up rollers provided at both ends of the white sheet S are taken up in a predetermined direction, and an image is read by passing the writing section through a scanner (not shown).

From both ends of the upper surface of the printer P, substantially plate-shaped brackets P1 are respectively extended. At substantially the center of each bracket P1, the printer P is detachably attached to a mounting frame 4 described later. A through hole P2 through which a screw 6 for attachment is penetrated is formed.

An attachment frame 4 for detachably attaching the powder receiver 1 and the printer P to the electronic blackboard E is provided on the lower surface of the electronic blackboard E. In the vicinity of both ends of the mounting frame 4, through holes 4 through which screws 5 for detachably attaching the mounting frame 4 to the lower surface of the electronic blackboard E are inserted.
a are respectively formed. At the position corresponding to the through hole 4a of the mounting frame 4 on the lower surface of the electronic blackboard E, screw holes E1 that can be screwed to the screws 5 are respectively formed. Therefore, the mounting frame 4 can be detachably screwed (attached) to the lower surface of the electronic blackboard E by inserting the screws 5 into the through holes 4a and screwing them into the screw holes E1.

The screw 5 may be a screw having a grip formed of resin or the like on the head of a normal screw. According to this configuration, the screw 5 can be manually rotated in the screwing direction or the anti-screwing direction without using a tool such as a screwdriver, so that the mounting frame 4 can be easily attached to and detached from the lower surface of the electronic blackboard E. Screwing (attachment) possible
can do.

As described above, since the mounting frame 4 for attaching the powder receiver 1 to the electronic blackboard E is detachably attached to the electronic blackboard E, the electronic blackboard E can be vertically or horizontally mounted. In the case where the powder receiver 1 is used, the powder receiver 1 can be attached to the electronic blackboard E if there is one mounting frame 4.
Therefore, the number of parts can be reduced and the cost of the entire electronic blackboard E can be suppressed.

Here, as described above, the electronic blackboard E of this embodiment is configured so that it can be used for both the vertical type and the horizontal type, so that the electronic whiteboard E is not a horizontal type as shown in FIG. When using the blackboard E, the side of the electronic blackboard E (FIG. 1)
The mounting frame 4 can be detachably attached to the electronic blackboard E by using the screw holes E2 drilled at the left side of FIG.

At the inner side of the through-hole 4a in the mounting frame 4, there are formed connecting holes 4b for detachably attaching the printer P to the mounting frame 4. The inner peripheral surface of each joint hole 4b is formed to be screwable with a screw 6 for attaching the printer P to the mounting frame 4. Thus, the printer P can be detachably screwed (attached) to the mounting frame 4 by inserting the screws 6 into the through holes P2 and screwing them into the joining holes 4b. The screw 6 may be formed of a screw having a grip formed of resin or the like on the head of a normal screw, similarly to the screw 5 described above.

As described above, since the printer P is detachably attached to the joining hole 4b formed in the attachment frame 4, the member for attaching the printer P can be attached separately from the attachment frame 4 to the electronic blackboard E. There is no need to arrange them. Therefore, the number of parts can be reduced and the cost of the entire electronic blackboard E can be suppressed.

The mounting frame 4 is formed of a metal plate, and powder receiving mounting pieces 4c which are bent substantially in an L-shape toward the front side of the electronic blackboard E extend from both ends thereof. The powder receiver mounting piece 4c is used for a powder receiver 1 described later.
The powder receiver 1 is detachably attached to the electronic blackboard E by being inserted into the mounting groove 2c.

Below the front surface of the electronic blackboard E, there is provided a powder receiver 1 for preventing erased scraps generated on the white sheet S from falling to the floor. This powder pan 1
Is attached below the electronic blackboard E and at the same time above the printer P, so that it is possible to prevent the printer P from being stained with erased waste. Powder receiver 1
Is composed of a main powder receiver 2 attached to the electronic blackboard E, and an auxiliary powder receiver 3 arranged on both sides thereof and capable of expanding and contracting in the longitudinal direction of the powder receiver 1. The entire length of the powder receiver 1 is expanded and contracted so as to be slightly wider than the width of the white sheet S of the electronic blackboard E.

The main powder receiver 2 is formed with a bottom surface 2a for receiving eraser dust. On both sides of the bottom surface 2a, a wall 2b for preventing the eraser dust from dropping from the bottom surface 2a is formed upward. It is formed so as to project toward it. Similar to the main powder receiver 2, the sub powder receiver 3 is formed with a bottom surface 3a for receiving erase dust, and on both sides of the bottom surface 3a, a wall portion for preventing the erase dust from falling from the bottom surface 3a. 3b is formed to protrude upward.

Further, an end wall portion 3c formed substantially in a frame shape integrally with the wall portion 3b is formed at an end of each sub powder receiver 3 on the side opposite to the main powder receiver 2. Therefore,
It is possible to prevent the eraser dust from dropping from the end of the sub powder receiver 3 on the side opposite to the main powder receiver 2, and when the auxiliary powder receiver 3 is expanded and contracted, to the side opposite to the main powder receiver 2 of the sub powder receiver 3. There is an advantage that the end portion can be easily grasped by hand.

Next, the structure of the powder receiver 1 will be described in detail with reference to FIG. FIG. 2A is a cross-sectional view of the main powder receiver 2, and FIG. 2B is a cross-sectional view of the sub powder receiver 3. As shown in FIG. 2A, the main powder receiver 2 is formed in a hollow shape, and the auxiliary powder receiver 3 is inserted into this hollow portion.
Therefore, the powder receiver 1 can be freely expanded and contracted in the longitudinal direction.

The wall 2 on the electronic blackboard E side of the main powder receiver 2
A mounting groove 2c for detachably attaching the main powder receiver 2 to the electronic blackboard E is formed outside b. FIG. 2 (a)
As shown in FIG. 5, the powder receiving mounting piece 4c formed on the mounting frame 4 is inserted into the mounting groove 2c,
The main powder receiver 2 is detachably attached to the electronic blackboard E.

Therefore, it is possible to attach the powder receiver 1 to various bulletin boards other than the present embodiment by expanding and contracting them according to the width of the bulletin board. In particular, when one electronic blackboard E is used as a vertical type or a horizontal type as in this embodiment,
It is possible to change the installation location so that the powder receiver 1 is disposed below the electronic blackboard E while the powder receiver 1 is expanded and contracted in accordance with the width of the electronic blackboard E. In addition, the powder receiver 1 can be detached from the electronic blackboard E and easily washed with water.

As shown in FIGS. 2A and 2B, the bottom portions 2a,
On the upper surface of 3a, three substantially arc-shaped convex portions 2a1 and 3a1 are formed substantially parallel to the longitudinal direction. Therefore, when a pen (not shown) or the like is placed on the upper surfaces of the bottom portions 2a and 3a, rolling can be prevented, and an eraser (not shown) is placed on the upper surfaces of the bottom portions 2a and 3a. In this case, the contact area with the eraser surface can be reduced, so that dirt on the eraser surface can be made less likely to adhere to the main powder receiver 2 and the sub powder receiver 3.

As shown in FIG. 2 (a), a substantially square hole 2d capable of engaging with a projection 3d of a sub-powder receiver 3 described later is formed substantially at the center of the lower surface of the main powder receiver 2. I have. On the other hand, as shown in FIG. 2B, a projection 3d that can be engaged with the hole 2d is formed substantially at the center of the lower surface of the sub powder receiver 3.

Referring to FIG. 3, the details of the hole 2d and the projection 3d will be described. FIG. 3 shows a side cross section of the powder receiver 1 during expansion and contraction. FIG. 3A is a side cross-sectional view showing a state where the auxiliary powder receiver 3 slides in a direction in which the powder receiver 1 extends, and FIG. 3B shows a state where the powder receiver 1 is completely extended. FIG. 3C is a side cross-sectional view showing a state where the auxiliary powder receiver 3 has begun to slide in the direction in which the powder receiver 1 shrinks. The left side in FIG. 3 is the end side of the powder receiver 1 and the right side is the center side of the powder receiver 1.

As shown in FIG. 3 (a), when the auxiliary powder receiver 3 slides in the direction in which the powder receiver 1 extends, that is, when the auxiliary powder receiver 3 In the case of sliding in the direction of arrow A), the projection 3d of the sub powder receiver 3
Thereby, the lower surface of the main powder receiver 2 is elastically deformed.
By forming the main powder receiver 2 with a resin or the like, such a deformation becomes possible.

Then, when the electronic blackboard E is used as a horizontal type, if the powder receiver 1 is extended by an amount such that the length of the powder receiver 1 is slightly longer than the width of the white sheet S, FIG.
As shown in (2), the projection 3d of the sub powder receiver 3 is locked in the hole 2d of the main powder receiver 2. Here, the protrusion 3d has a substantially triangular shape in a side sectional view, and is locked by the front surface (the end side of the powder receiver 1) of the protrusion 3d colliding with the side surface of the hole 2d. Therefore, the auxiliary powder receiver 3 is not further extended.

As shown in FIG. 3C, the projection 3d is
When the auxiliary powder receiver 3 slides in the direction in which the powder receiver 1 contracts from the state in which the auxiliary powder receiver 3 is shrunk, that is, when the auxiliary powder receiver 3 slides toward the center (in the direction of arrow B) with respect to the main powder receiver 2. The end of the hole 2d is elastically deformed along the slope of the protrusion 3d, so that the protrusion 3d is contained in the main powder receiver 2. Therefore, the powder receiver 1 can be contracted in a manner opposite to the case where the powder receiver 1 is extended.

As described above, since the projection 3d of the sub-powder receiver 3 is engaged with the hole 2d of the main powder receiver 2, when the sub-powder receiver 3 is extended, the sub-powder receiver 3 is separated from the main powder receiver 2. It can be prevented from falling off. In this embodiment, the hole 2d is formed on the main powder receiver 2 side and the projection 3d is formed on the sub powder receiver 3 side. However, the configuration may be reversed. In such a case, if the direction of the substantially triangular protrusion 3d is reversed, the same operation as in the present embodiment can be achieved.

In this embodiment, when the electronic blackboard E is used as a horizontal type, when the powder receiver 1 is extended by an amount that the length of the powder receiver 1 is slightly longer than the width of the white sheet S, the auxiliary The projection 3 d of the powder receiver 3 is configured to be locked in the hole 2 d of the main powder receiver 2.
d may be provided at a plurality of positions so as to be able to expand and contract in a plurality of stages. In this case, all of the projections except for the projection 3d closest to the main powder receiver 2 need to be formed of projections having a smooth sectional shape. In this way, if the powder receiver 1 is configured to be able to expand and contract in a plurality of stages, the powder receiver 1 can be attached to various bulletin boards other than the present embodiment by expanding and contracting according to the width of the bulletin board. .

Next, the internal structure of the main powder receiver 2 will be described with reference to FIG. FIG. 4 is a partial sectional view of the main powder receiver 2 as viewed from above. A gear 7 is disposed substantially at the center of the main powder receiver 2 and is rotatably mounted on a shaft 2 e extending from the main powder receiver 2. From the auxiliary powder receiver 3 inserted from both sides of the main powder receiver 2, racks 3 e engraved with teeth meshable with the gear 7 extend toward the center of the main powder receiver 2. The rack 3e is engaged with both sides of the gear 7.

Accordingly, when one of the sub-powder trays 3 of the sub-powder trays 3 arranged on both sides in the longitudinal direction of the main powder tray 2 is expanded and contracted, the rack 3e of the sub-powder tray 3 causes the main powder tray 2 to move. The gear 7 mounted on the inside is rotated, the rotation of the gear 7 is transmitted to the rack 3e of the other auxiliary powder receiver 3, and the other auxiliary powder receiver 3 is expanded and contracted. Therefore, only by expanding and contracting the auxiliary powder receiver 3 on one side, the auxiliary powder receivers 3 on both sides can be simultaneously expanded and contracted by the same amount.

Next, the operation when the electronic blackboard E is used in the horizontal type will be described. First, as shown in FIG. 1, after inserting the screws 5 into the through holes 4a of the mounting frame 4, the screws 5 are screwed into the screw holes E1 of the electronic blackboard E, and the mounting frame 4 is attached to the electronic blackboard E. Attach to the lower surface of. When the mounting of the mounting frame 4 is completed, the screws 6 are inserted into the through holes P2 of the printer P, and then the screws 6 are screwed into the joining holes 4b of the mounting frame 4, and the printer P is inserted into the mounting frame 4. Attach.

Next, the mounting groove 2c of the main powder receiver 2 is inserted into the powder receiver mounting piece 4c of the mounting frame 4 attached to the lower surface of the electronic blackboard E, so that the powder receiver 1 is attached to the electronic blackboard E. Attach. When the attachment of the powder receiver 1 to the electronic blackboard E is completed, the auxiliary powder receiver 3 is moved in the direction of arrow A so that the entire length of the powder receiver 1 is slightly larger than the width of the white sheet S of the electronic blackboard E. Extend.

As shown in FIG. 4, when one of the auxiliary powder receivers 3 arranged on both sides in the longitudinal direction of the main powder receiver 2 is extended in the direction of arrow A, the auxiliary powder receiver 3 is moved. Rack 3
e rotates the gear 7 mounted on the inside of the main powder receiver 2, and the rotation of the gear 7 causes the rack 3 e of the other auxiliary powder receiver 3 to rotate.
The other auxiliary powder receiver 3 also extends in the direction of arrow A. Therefore, when the auxiliary powder receiver 3 on one side is extended, the auxiliary powder receivers 3 on both sides are simultaneously extended by the same amount.

Then, as shown in FIG. 3 (a), the auxiliary powder receiver 3 slides toward the end (in the direction of arrow A) with respect to the main powder receiver 2. In such a case, the auxiliary powder receiver 3 slides. Projection 3d
Thereby, the lower surface of main powder receiver 2 is elastically deformed. When the extension amount of the auxiliary powder receiver 3 reaches a predetermined amount, FIG.
As shown in (b), the projection 3d of the sub powder receiver 3 is locked in the hole 2d of the main powder receiver 2. Therefore, the auxiliary powder receiver 3 does not extend any more. In this manner, the operation when the electronic blackboard E is used in the horizontal type is completed.

When the electronic blackboard E used in the horizontal type is used in the vertical type, the mounting frame 4 is first attached to the screw hole E2 of the electronic whiteboard E in the same manner as the above-described operation. The P and the powder receiver 1 are each attached to the mounting frame 4 (see FIG. 1). When each attachment is completed, the auxiliary powder receiver 3 is shrunk so that the entire length of the powder receiver 1 is slightly wider than the width of the white sheet S of the electronic blackboard E.

In such a case, the end of the hole 2d is elastically deformed along the slope of the projection 3d as shown in FIG. Will be included. Then, the auxiliary powder receiver 3 is contracted by a predetermined amount. In the case of the present embodiment, the configuration is such that the width of the white sheet S when the electronic blackboard E is used vertically is slightly wider in a state where the auxiliary powder receiver 3 is completely contracted. Thus, the operation when the electronic blackboard E is used in the vertical type is completed.

FIG. 5A is a front view when the electronic blackboard E is used as a vertical type, and FIG.
It is a front view at the time of using as a horizontal type. As described above, the length of the entire powder receiver 1 is configured to be slightly larger than the width of the white sheet S of the electronic blackboard E due to the expansion and contraction of the sub powder receiver 3.

As described above, the powder receiver 1 of this embodiment
The main powder receiver 2 detachably attached to the electronic blackboard E is formed in a hollow shape, and the auxiliary powder receiver 3 is inserted into the hollow portion to be supported by the main powder receiver 2 and the main powder receiver 2 is supported. When the auxiliary powder receiver 3 slides inside the receiver 2, the powder receiver 1 is freely extended and contracted in its longitudinal direction. Therefore, the electronic blackboard E
The length of the powder receiver 1 can be freely expanded and contracted in accordance with the width of the powder receiver.

As described above, the present invention has been described based on the embodiments. However, the present invention is not limited to the above-described embodiments, and various improvements and modifications can be made without departing from the gist of the present invention. Can easily be inferred.

[0059]

According to the first aspect of the present invention, the auxiliary powder receiver that receives the eraser dust is supported by the main powder receiver that also receives the eraser waste, and expands and contracts in the longitudinal direction of the main powder receiver. Is done. Therefore, there is an effect that the length of the powder receptacle can be freely changed according to the width of the bulletin board.

According to the powder receiver of claim 2, claim 1 is provided.
In addition to the effects provided by the powder receiver described above, the other of the main powder receiver or the auxiliary powder receivers disposed on both longitudinal sides of the main powder receiver is the main powder receiver or the auxiliary powder receiver formed in a hollow shape. Inserted inside one. Therefore, there is an effect that the powder receiver can be expanded and contracted in the longitudinal direction.

According to the powder receiver of claim 3, claim 1 is
Or, in addition to the effect of the powder receiver described in 2, when one of the auxiliary powder receivers arranged on both sides in the longitudinal direction of the main powder receiver is expanded and contracted, the rack of the auxiliary powder receiver is used. A gear attached to the inside of the main powder receiver is rotated, the rotation of the gear is transmitted to the rack of the other auxiliary powder receiver, and the other auxiliary powder receiver expands and contracts. Therefore, there is an effect that the auxiliary powder receivers on both sides can be simultaneously expanded and contracted by the same amount only by expanding and contracting the auxiliary powder receiver on one side.

According to the powder receiver of claim 4, claim 1
In addition to the effect of the powder receiver described in any one of to 3 above,
Further, the main powder receiver is detachably attached to the bulletin board. Therefore, there is an effect that the powder receptacle can be attached to various bulletin boards by expanding and contracting them according to the width of the bulletin boards. In particular, when one bulletin board is used as a vertical type or a horizontal type, change the installation place so that the powder tray is arranged below the bulletin board while expanding and contracting the powder tray according to the width of the bulletin board. There is an effect that can be. In addition, the powder pan can be removed from the bulletin board and easily washed with water.

According to the powder receiver of claim 5, claim 1 is provided.
In addition to the effect of the powder receiver described in any one of
Further, the protrusion formed on one of the main powder receiver and the sub powder receiver is engaged with a groove or a hole formed on the other of the main powder receiver and the sub powder receiver. Therefore, when the auxiliary powder receiver is extended, the projection is first engaged with the groove or the hole as described above, so that it is possible to prevent the auxiliary powder receiver from dropping out of the main powder receiver. There is.

According to the sixth aspect of the present invention, there is provided a powder receiver.
In addition to the effect of the powder receiver described in any one of
Further, a convex portion is formed on the upper surface of the bottom portion that receives the eraser dust in the main powder receiver and the sub powder receiver, substantially in parallel with each longitudinal direction. Therefore, when a pen or the like is placed on the upper surface of the bottom portion, it can be prevented from rolling, and when an eraser is placed on the upper surface of the bottom portion, the contact area with the eraser surface is reduced to reduce the area of the eraser surface. There is an effect that dirt can be hardly attached to the main powder receiver and the sub powder receiver.

According to the powder receiver of claim 7, claim 1 is provided.
In addition to the effect of the powder receiver according to any one of
Furthermore, an end wall portion is formed in a substantially frame shape at the end of the sub powder receiver on the side opposite to the main powder receiver, integrally with walls protruding from both sides of the bottom portion of the sub powder receiver. . Accordingly, it is possible to prevent the eraser dust from dropping from the end of the sub powder receiver on the side opposite to the main powder receiving side, and when the sub powder receiver is expanded and contracted, the end of the sub powder receiver on the side opposite to the main powder receiving side is This has the effect of making it easier to grasp by hand.

According to the bulletin board described in claim 8, according to claim 1,
7 is attached to a bulletin board provided with a fixture that can be attached in the short side direction and the long side direction. Therefore, when the bulletin board is used as a vertical type or a horizontal type, there is an effect that the powder receiver can be expanded and contracted according to the width of the bulletin board.

According to the bulletin board described in claim 9, according to claim 8,
In addition to the effects of the bulletin board described above, the bulletin board further includes a printer that prints an image described on the surface to be described on paper, and the main powder receiver is attached above the printer. Therefore, there is an effect that the printer can be prevented from being stained by the eraser dust.

According to the bulletin board of the tenth aspect, in addition to the effect of the bulletin board of the eighth or ninth aspect,
An attachment frame for attaching the powder receiver to the bulletin board is detachably attached to the bulletin board. Therefore, even when the bulletin board is used as a vertical type or a horizontal type, if one mounting frame is used, the powder receptacle can be attached to the bulletin board, so that the number of parts can be reduced and the cost of the entire bulletin board can be reduced. This has the effect.

According to the bulletin board according to the eleventh aspect, in addition to the effect of the bulletin board according to any one of the eighth to tenth aspects, the printer is detachably mounted on the joint provided on the mounting frame. Be worn. Therefore, since there is no need to dispose a printer mounting member on the bulletin board separately from the mounting frame, the number of components can be reduced, and the cost of the entire bulletin board can be reduced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view schematically showing an electronic blackboard to which a powder receiver according to an embodiment is attached.

FIG. 2A is a sectional view of a main powder receiver, and FIG.
FIG. 4 is a sectional view of a sub powder receiver.

FIG. 3A is a side cross-sectional view showing a state where an auxiliary powder receiver slides in a direction in which the powder receiver extends, and FIG.
Is a side sectional view showing a state in which the powder receiver is fully extended,
(C) is a side sectional view showing a state in which the auxiliary powder receiver has begun to slide in the direction in which the powder receiver contracts.

FIG. 4 is a partial sectional view of the main powder receiver as viewed from above.

FIG. 5A is a front view when the electronic blackboard is used as a vertical type, and FIG. 5B is a front view when the electronic blackboard is used as a horizontal type.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Powder receiver 2 Main powder receiver 2a Bottom part 2a1 Convex part 2d hole 3 Sub powder receiver 3a Bottom part 3a1 Convex part 3b Wall part 3c End wall part 3d Projection 3e Rack 4 Mounting frame 4b Joint hole (joint part) 7 Gear E Electronic blackboard (bulletin board) P Printer T Fixture U Stand fixture (fitting)

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Katsuyuki Akita 15-1 Naeshiro-cho, Mizuho-ku, Nagoya F-term in Brother Industries, Ltd. (reference) 2C071 CB07

Claims (11)

[Claims] In order to receive a powdery eraser generated from a bulletin board capable of writing on a surface to be described and erasing the description, a powder receptacle disposed below the bulletin board is provided on the bulletin board. A powder receiver comprising: a main powder receiver to be worn; and a sub powder receiver supported by the main powder receiver and capable of expanding and contracting in the longitudinal direction of the main powder receiver. 2. One of the main powder receiver and the sub powder receiver is formed in a hollow shape, and the sub powder receiver is disposed on both sides in the longitudinal direction of the main powder receiver, and the main powder receiver or The powder receiver according to claim 1, wherein the other of the auxiliary powder receivers is formed in a shape that can be inserted into one of the hollow main powder receiver and the auxiliary powder receiver. 3. The main powder receiver is formed in a hollow shape, and a gear is rotatably mounted inside the main powder receiver, and the main powder receiver is disposed on both sides of the main powder receiver. The powder receiver according to claim 1 or 2, wherein the auxiliary powder receiver is formed with a rack engraved with a tooth meshable with the gear. 4. The powder receiver according to claim 1, wherein the main powder receiver is detachably attached to the bulletin board. 5. One of the main powder receiver and the auxiliary powder receiver,
The powder according to any one of claims 1 to 4, wherein a protrusion is formed, and a groove or a hole engageable with the protrusion is formed on the other of the main powder receiver and the sub powder receiver. received. 6. A convex portion is formed on an upper surface of a bottom portion for receiving eraser dust in the main powder receiver and the sub powder receiver, substantially in parallel with each longitudinal direction. The powder receiver according to any one of items 1 to 5. 7. A wall protruding from the bottom surface is formed on both sides of the bottom surface of the sub-powder receiver, and the end of the sub-powder receiver on the side opposite to the main powder receiver is formed by the wall portion. The powder receiver according to any one of claims 1 to 6, further comprising an end wall portion formed in a substantially frame shape integrally with the powder container. 8. A bulletin board, comprising the powder receptacle according to claim 1 attached thereto, and a fixture which can be attached in a short side direction and a long side direction. 9. The bulletin board is provided with a printer for printing an image described on a surface to be described on paper, and the main powder receiver is attached above the printer. The bulletin board according to claim 8. 10. The bulletin board according to claim 8, wherein an attachment frame for attaching the powder receiver to the bulletin board is detachably attached to the bulletin board. 11. The bulletin board according to claim 8, wherein the mounting frame includes a joint for detachably mounting the printer.