JPH08324184A - Magnetic board - Google Patents
Magnetic boardInfo
- Publication number
- JPH08324184A JPH08324184A JP15859695A JP15859695A JPH08324184A JP H08324184 A JPH08324184 A JP H08324184A JP 15859695 A JP15859695 A JP 15859695A JP 15859695 A JP15859695 A JP 15859695A JP H08324184 A JPH08324184 A JP H08324184A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- magnet
- panel
- magnetic powder
- cell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、先端に磁石を設けた筆
記具やスタンプでセル内の磁性粉を吸引し、セルの上部
に吸引した磁性粉でパネル上に文字や絵を表示する磁気
ボードに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic board for attracting magnetic powder in a cell with a writing instrument or a stamp having a magnet at its tip and displaying characters and pictures on a panel with the magnetic powder attracted to the upper part of the cell. Regarding
【０００２】[0002]
【発明の背景】従来、磁石を備えた筆記具やスタンプで
磁気ボードに描いた文字や絵を消去する場合、図９
（ａ）に示すように磁気ボード３５の背面に摺動可能に
配置された板状の消去用磁石３６を把手３８を操作して
磁気ボード３５の一端から他端に移動させ、磁気ボード
３５の表面上に移動している磁性粉を下方から吸引して
表面に表示されていた文字や絵を消去していた。2. Description of the Related Art Conventionally, when a character or a picture drawn on a magnetic board is erased by a writing instrument or a stamp equipped with a magnet, FIG.
As shown in (a), the plate-shaped erasing magnet 36 slidably disposed on the back surface of the magnetic board 35 is moved from one end to the other end of the magnetic board 35 by operating the handle 38. The magnetic powder moving on the surface was sucked from below to erase the characters and pictures displayed on the surface.
【０００３】この磁気ボード３５は一般のホワイトボー
ドが筆記具として消耗品であるマーカーを使用している
のに比べ、磁石を先端に取りつけた筆記具で描画できる
ので消耗品を一切使用しない利点があるが、上述のよう
に磁気ボードの背面には消去用の磁石３６が移動するた
めの空間３７を必要とし（図９（ｂ）参照）、大きな磁
気ボードにした場合は強度的に問題があった。This magnetic board 35 has an advantage that it does not use any consumables because it can be drawn with a writing instrument having a magnet attached to its tip, as compared with a marker which is a consumable item as a general whiteboard. As described above, the back surface of the magnetic board needs the space 37 for moving the erasing magnet 36 (see FIG. 9B), and there is a problem in strength when a large magnetic board is used.
【０００４】また、消去用の磁石３６を磁気ボード３５
の背面を移動させるために、表示させた文字や絵の一部
を消去したり、書き直したりすることができない不便さ
があった。Further, the erasing magnet 36 is attached to the magnetic board 35.
There was an inconvenience that it was not possible to erase or rewrite some of the displayed characters and pictures in order to move the back side of.
【０００５】[0005]
【発明の目的】本発明は、前記背景の下に成立したもの
であって磁気ボードに描いた文字や絵の任意の箇所を前
面から消去できるとともに、大きなサイズの磁気ボード
を提供することを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide a large-sized magnetic board which can be erased from the front surface of characters and pictures drawn on the magnetic board. And
【０００６】[0006]
【課題を達成するための手段】前記目的を達成するため
に、本発明の磁気ボードは磁性粉と粘性流体とを封入し
たセルを平面上に連続して配設したパネルと、上記セル
内の磁性粉を上方から拡散させる拡散手段と、該パネル
の裏側全面にわたって重合し上記拡散手段で拡散した磁
性粉を下方から吸引するシート状磁石とを備えたことを
特徴とする。In order to achieve the above object, the magnetic board of the present invention is a panel in which cells containing magnetic powder and viscous fluid are continuously arranged on a plane, and It is characterized in that it is provided with a diffusing means for diffusing the magnetic powder from above and a sheet-like magnet for superposing on the entire back surface of the panel and attracting the magnetic powder diffused by the diffusing means from below.
【０００７】なお、上記パネルとシート状磁石との間に
は非磁性体のスペーサを挟着してもよい。A nonmagnetic spacer may be sandwiched between the panel and the sheet magnet.
【０００８】また、上記シート状磁石の裏側面には補強
板を重合することが好ましい。Further, it is preferable that a reinforcing plate is superposed on the back side surface of the sheet magnet.
【０００９】[0009]
【発明の作用】前記構成によれば、セルの上部に移動し
ている磁性粉は拡散手段でセル内に拡散されるので、パ
ネルの裏側面に重合されたシート状磁石は該磁石の磁力
内に入った磁性粉を下方から吸引する。連続して拡散手
段を操作すると磁性粉が上記磁石に逐次吸引され、拡散
手段を接触させたセル内の全ての磁性粉はセルの下部に
移動し、パネルの上面から磁性粉を視認することができ
なくなり、パネル上の表示のうち拡散手段で磁性粉を拡
散したセルの表示のみを消去することができる。なお、
上記パネルとシート状磁石との間に非磁性体のスペーサ
を挟着した場合は、スペーサの厚みを調整することによ
りセル内の磁性粉を吸引する磁力の及ぶ範囲を調整する
ことができる。According to the above construction, the magnetic powder moving to the upper part of the cell is diffused into the cell by the diffusing means, so that the sheet-shaped magnet superposed on the back surface of the panel is within the magnetic force of the magnet. The magnetic powder that has entered is sucked from below. When the diffusing means is continuously operated, the magnetic powder is sequentially attracted to the magnet, and all the magnetic powder in the cell that is in contact with the diffusing means moves to the lower part of the cell, and the magnetic powder can be visually recognized from the upper surface of the panel. It becomes impossible to erase only the display of the cells on the panel in which the magnetic powder is diffused by the diffusion means. In addition,
When a non-magnetic spacer is sandwiched between the panel and the sheet magnet, the range of the magnetic force for attracting the magnetic powder in the cell can be adjusted by adjusting the thickness of the spacer.
【００１０】また、上記シート状磁石の裏側面に補強板
を重合した場合は、磁気ボードの強度が増し、パネルの
前面から圧力を加えても歪むことがなくなるので、磁気
ボードの形状を大型化することができる。Further, when a reinforcing plate is superposed on the back side of the sheet magnet, the strength of the magnetic board increases, and it is not distorted even if pressure is applied from the front surface of the panel, so that the shape of the magnetic board is enlarged. can do.
【００１１】[0011]
【実施例】以下、図面によって本発明の実施態様につい
て説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１２】図１は磁気ボードの使用状態を示し、この
磁気ボードはパネル１と、拡散手段Ａと、上記パネル１
の裏側全面にわたって重合したシート状磁石２とから構
成され、台板３に取着されている。FIG. 1 shows a state of use of the magnetic board, which is a panel 1, a diffusing means A, and the panel 1 described above.
It is composed of a sheet-shaped magnet 2 which is polymerized over the entire back side thereof and is attached to a base plate 3.
【００１３】パネル１は図２及び図３に示すように、磁
性粉４と粘性流体５とを封入し、ハニカム状に区画され
たセル６を平面上に連続して配設したもので、セル６の
上面に先端に磁石８を取着した磁気筆記具７を接触して
移動すると、封入された磁性粉４はセル６の上部に吸引
され粘性流体５の粘性で沈下を抑制されて磁石８の影響
力が失われてもセル６の上部に留まり、磁石８の移動軌
跡に添って文字や絵を描画することができるように設け
られている。As shown in FIGS. 2 and 3, the panel 1 is one in which magnetic particles 4 and a viscous fluid 5 are enclosed, and cells 6 partitioned in a honeycomb shape are continuously arranged on a plane. When the magnetic writing instrument 7 having the magnet 8 attached to the tip thereof is brought into contact with the upper surface of the magnet 6 and moved, the enclosed magnetic powder 4 is attracted to the upper part of the cell 6 and the sinking is suppressed by the viscosity of the viscous fluid 5. Even if the influence is lost, it stays at the upper part of the cell 6 and the characters and pictures can be drawn along the movement trajectory of the magnet 8.
【００１４】なお、上記セル６を粒状のマイクロカプセ
ルで形成し、該マイクロカプセル内に磁性粉４と粘性流
体５とを封入し、シートに塗布してパネル１を形成して
もよい。Alternatively, the cells 6 may be formed of granular microcapsules, and the magnetic powder 4 and the viscous fluid 5 may be enclosed in the microcapsules and applied to a sheet to form the panel 1.
【００１５】拡散手段Ａは図４（ａ）（ｂ）に示すよう
に、円柱状の回転磁石１０とモータ１１と電源１２とス
イッチ１３とを備え、本体が略へ字状に曲折して形成さ
れた磁気筆記具７の内部に収容されている。As shown in FIGS. 4 (a) and 4 (b), the diffusing means A comprises a cylindrical rotating magnet 10, a motor 11, a power source 12 and a switch 13 and is formed by bending the main body into a substantially V shape. The magnetic writing instrument 7 is housed inside.
【００１６】上記回転磁石１０は円周上に複数の磁極を
有する円柱状の磁石で、スイッチ１３を押してモータ１
１を回転させるとフレキシブルジョイント１４で連結さ
れた回転磁石１０が回転するように設けられている。The rotating magnet 10 is a columnar magnet having a plurality of magnetic poles on its circumference.
The rotating magnet 10 connected by the flexible joint 14 is provided so as to rotate when 1 is rotated.
【００１７】上記回転磁石１０は回転中はパネル１に対
する磁極が絶えず反転しているので、筆記具の磁石で一
旦磁化されて表面に移動していた磁性粉４は回転磁石１
０が回転して磁極が絶えず反転しているので、図５
（ａ）に示すように磁化されていた磁性粉４が一時的に
反発してセル６内に拡散し、拡散した磁性粉４はやがて
後述するシート状磁石２に吸引されて図５（ｂ）に示す
ようにセル６の下部に移動させられる。Since the magnetic poles of the rotary magnet 10 with respect to the panel 1 are constantly reversed during rotation, the magnetic powder 4 which has been magnetized once by the magnet of the writing instrument and moved to the surface is rotated.
Since 0 rotates and the magnetic poles are constantly inverted,
As shown in (a), the magnetized magnetic powder 4 temporarily repels and diffuses into the cell 6, and the diffused magnetic powder 4 is eventually attracted to the sheet-like magnet 2 to be described later, and FIG. It is moved to the lower part of the cell 6 as shown in FIG.
【００１８】なお、上記磁気筆記具７は構造を簡単にす
るために本体を直線状に形成し、モータ１１の回転軸と
同一軸上に回転磁石１０を直線的に連結してもよい。In order to simplify the structure of the magnetic writing instrument 7, the main body may be formed in a linear shape, and the rotary magnet 10 may be linearly connected on the same axis as the rotation axis of the motor 11.
【００１９】また、上記拡散手段Ａは図６（ａ）に示す
ように円筒状に形成した本体１５内に、鉄等の磁性体で
形成した支持板１６の両端にはそれぞれ異なった極が外
側面に現れるように固定した板状の磁石１７、１７と、
モータ１８とを配置し、支持板１６の中心にモータ１８
の回転軸１９の先端を固定して磁石１７を水平方向に回
転させ磁界を変化さながら、本体１５の先端部１５ａを
パネルの表面に接触させてもよいし、図６（ｂ）に示す
ように、イレーザ（黒板拭き）を模して形成した本体２
０内に適宜手段で回転自在に軸支された円周上に複数の
極を有する２本の円柱状の回転磁石２１、２１を水平に
並設し、回転磁石２１の回転軸２２の先端に固定したギ
ヤ２３にモータ２４の回転軸２５の先端に固定した駆動
ギヤ２６を噛合し、モータ２４の回転に連動して回転磁
石２１、２１を回転させて磁界を変化させながら、本体
２０の底部２０ａをパネルの表面に接触しても構わな
い。さらに、図６（ｃ）に示すように、円筒状の本体２
７内に電磁石２８を配置し、コイル２９に流れる電流ｉ
の流れをＤＣーＡＣコンバータ３０で連続的に切り替え
て端部２８ａの磁極を繰り返し反転させながら、本体２
７の先端部２７ａをパネルに接触するようにしてもよ
い。As shown in FIG. 6 (a), the diffusing means A has a cylindrical main body 15 and a support plate 16 made of a magnetic material such as iron. Plate-shaped magnets 17, 17 fixed so as to appear on the side,
The motor 18 is arranged, and the motor 18 is placed at the center of the support plate 16.
The tip portion 15a of the main body 15 may be brought into contact with the surface of the panel while the tip of the rotary shaft 19 is fixed and the magnet 17 is rotated in the horizontal direction to change the magnetic field, as shown in FIG. 6 (b). , Body 2 imitating eraser (blackboard wiping)
Two columnar rotary magnets 21, 21 having a plurality of poles on a circumference rotatably supported by appropriate means in 0 are arranged side by side horizontally, and at the tip of the rotary shaft 22 of the rotary magnet 21. The fixed gear 23 meshes with the drive gear 26 fixed to the tip of the rotary shaft 25 of the motor 24, and the rotating magnets 21 and 21 are rotated in conjunction with the rotation of the motor 24 to change the magnetic field and the bottom portion of the main body 20. 20a may contact the surface of the panel. Further, as shown in FIG. 6C, the cylindrical main body 2
The electromagnet 28 is arranged in the coil 7, and the current i flowing through the coil 29 is
Of the main body 2 while continuously switching the flow of
The tip 27a of 7 may contact the panel.
【００２０】なお、図６（ａ）（ｂ）（ｃ）において符
号１２は電源、１３はスイッチをそれぞれ示す。In FIGS. 6A, 6B and 6C, reference numeral 12 is a power source and 13 is a switch.
【００２１】シート状磁石２は上記パネル１と同等以上
のサイズに形成されたシート状の磁石で構成され、上記
パネル１の裏側全面にわたって重合し、かつ接着剤等の
適宜手段で貼着され、上記拡散手段Ａでセル６内に拡散
した磁性粉４をセル６の下方から吸引するように設けら
れている。The sheet-like magnet 2 is composed of a sheet-like magnet having a size equal to or larger than that of the panel 1, is polymerized over the entire back side of the panel 1, and is adhered by an appropriate means such as an adhesive. The magnetic powder 4 diffused into the cell 6 by the diffusing means A is provided so as to be sucked from below the cell 6.
【００２２】なお、このシート状磁石２の磁力の強さは
セル６内の磁性粉４をセル６の上面に吸引する磁気筆記
具７の磁石８の磁力よりも弱く、かつ磁性粉４に及ぼす
磁力の範囲がセル６の上部に移動させた磁性粉４を粘性
流体５に抗して引き戻さない強さに設定しておけばよ
い。The strength of the magnetic force of the sheet-shaped magnet 2 is weaker than the magnetic force of the magnet 8 of the magnetic writing instrument 7 that attracts the magnetic powder 4 in the cell 6 to the upper surface of the cell 6, and exerts a magnetic force on the magnetic powder 4. The range may be set to a strength at which the magnetic powder 4 moved to the upper part of the cell 6 is not pulled back against the viscous fluid 5.
【００２３】上述のように磁気ボードは構成されている
ので、先端に磁石８を取着した磁気筆記具７の先端をパ
ネル１の上面に接触しながら移動させることによって、
セル６内の磁性粉４をセル６の上部に吸引し、パネル１
の表面に文字や絵を表示させることができる（図３参
照）。Since the magnetic board is constructed as described above, by moving the tip of the magnetic writing instrument 7 having the magnet 8 attached to the tip thereof while contacting the upper surface of the panel 1,
The magnetic powder 4 in the cell 6 is sucked to the upper part of the cell 6, and the panel 1
Characters and pictures can be displayed on the surface of the (see Fig. 3).
【００２４】一旦描いた絵や文字を消去する場合は、図
５（ａ）に示すように拡散手段Ａのスイッチ１３をＯＮ
にしてモータ１１を回転させ、回転磁石１０を回転させ
ながらパネル１の表面に接近又は接触してパネル１上を
撫でるように繰り返し移動させると、回転磁石１０の回
転中はパネル１に対する磁極が絶えず反転するので、一
旦磁化されて表面に吸引された磁性粉４は回転磁石１０
が回転して磁極が反転する度に反発、吸引を繰り返して
セル６内を拡散移動する。When erasing a picture or character once drawn, the switch 13 of the diffusing means A is turned on as shown in FIG. 5 (a).
When the motor 11 is rotated and the rotary magnet 10 is rotated and repeatedly moved so as to approach or come into contact with the surface of the panel 1 and stroke the surface of the panel 1, the magnetic pole with respect to the panel 1 is constantly maintained while the rotary magnet 10 is rotating. Since the magnetic powder 4 is once magnetized and attracted to the surface, the magnetic powder 4 is magnetized once.
Is rotated and the magnetic pole is reversed, repulsion and suction are repeated to diffusely move in the cell 6.
【００２５】拡散した磁性粉４の内で、シート状磁石２
の吸引可能な磁力の範囲に入った磁性粉４はシート状磁
石２に吸引されてセル６の下面に移動させられ、シート
状磁石２に吸引されない磁性粉４は回転磁石１０が回転
している間はセル６内を拡散運動しているので、やがて
シート状磁石２の吸引可能な磁力の範囲内に入り、すべ
ての磁性粉４はシート状磁石２に吸引されてセル６の下
部に移動させられ、拡散手段Ａを接触させた部分のみ表
面から描画が完全に消滅する（図４（ｂ）参照）。Of the diffused magnetic powder 4, the sheet-shaped magnet 2
The magnetic powder 4 which has entered the range of the attractable magnetic force is attracted by the sheet magnet 2 and moved to the lower surface of the cell 6, and the magnetic powder 4 not attracted by the sheet magnet 2 is rotated by the rotating magnet 10. During this time, the cells 6 are in a diffusive motion, so that they eventually enter the range of the magnetic force that can be attracted by the sheet-shaped magnet 2, and all the magnetic powder 4 is attracted by the sheet-shaped magnet 2 and moved to the lower part of the cell 6. As a result, the drawing completely disappears from the surface only in the portion in contact with the diffusing means A (see FIG. 4B).
【００２６】上述のように、一旦磁気筆記具７の磁石８
でセル６の上部に吸引した磁性粉４のうち、拡散手段Ａ
を接触させたセル６の磁性粉４のみセル６内に拡散し、
パネル１の下側面に重合しているシート状磁石２に吸引
され、上記セル６内のすべての磁性粉４をセル６の下部
に移動することができるので、パネル１の表面に描かれ
ていた文字や絵の中で拡散手段Ａを接触させた部分だけ
を完全に消去することができる（図１参照）。As described above, once the magnet 8 of the magnetic writing instrument 7 is used.
Of the magnetic powder 4 attracted to the upper part of the cell 6 by the diffusion means A
Only the magnetic powder 4 of the cell 6 which has been contacted with is diffused into the cell 6,
Since all the magnetic powder 4 in the cell 6 can be moved to the lower part of the cell 6 by being attracted by the sheet-like magnet 2 superposed on the lower surface of the panel 1, it is drawn on the surface of the panel 1. It is possible to completely erase only the part of the character or picture that is in contact with the diffusion means A (see FIG. 1).
【００２７】なお、粘性流体５の比重を磁性粉４の比重
と同等若しくは大きくすることも考えられる。この場合
には、定常状態では磁性粉４はセル６の上部に浮き上が
ってしまうが、予め拡散手段Ａで磁性粉４をセル６内に
拡散し、セル６の下部にシート状磁石２で吸着しておけ
ばよい。このことにより、磁気筆記具７で描画する時は
磁性粉４がセル６の上方に移動しやすく、かつ移動した
磁性粉４が沈下することはないので文字や絵が鮮明に表
示される。一旦描画した文字や絵を消去する時は拡散手
段Ａでセル内の磁性粉４を拡散しシート状磁石２で吸引
すればよい。It is also possible to make the specific gravity of the viscous fluid 5 equal to or larger than the specific gravity of the magnetic powder 4. In this case, the magnetic powder 4 floats above the cell 6 in a steady state, but the magnetic powder 4 is previously diffused into the cell 6 by the diffusing means A and is attracted to the lower part of the cell 6 by the sheet magnet 2. You can leave it. As a result, when drawing with the magnetic writing instrument 7, the magnetic powder 4 is likely to move above the cell 6 and the moved magnetic powder 4 does not sink, so that characters and pictures are clearly displayed. When erasing a drawn character or picture, the magnetic powder 4 in the cell may be diffused by the diffusing means A and drawn by the sheet magnet 2.
【００２８】次に、図７に示すようにパネル１とシート
状磁石２の間にスペーサ３０を挟着した磁気ボードにつ
いて説明する。上記スペーサ３０はプラスチック、紙、
木等の非磁性体で板状に形成され、パネル１とシート状
磁石２とに接着剤等の適宜方法で挟着されている。Next, a magnetic board in which a spacer 30 is sandwiched between the panel 1 and the sheet magnet 2 as shown in FIG. 7 will be described. The spacer 30 is made of plastic, paper,
It is formed of a non-magnetic material such as wood into a plate shape, and is sandwiched between the panel 1 and the sheet magnet 2 by an appropriate method such as an adhesive.
【００２９】上述のように構成された磁気ボードは、シ
ート状磁石２がセル６内の磁性粉４の吸引可能な磁力の
及ぶ範囲をスペーサ３０の厚みで容易に調整することが
できるので、描画時に磁気筆記具７の磁石８で吸引した
磁性粉４が引き戻されることがなく鮮明に描画できると
ともに、消去時には確実に描画を消去することができ
る。In the magnetic board constructed as described above, the range in which the magnetic force that the sheet-shaped magnet 2 can attract the magnetic powder 4 in the cell 6 reaches can be easily adjusted by the thickness of the spacer 30. At this time, the magnetic powder 4 attracted by the magnet 8 of the magnetic writing instrument 7 can be drawn clearly without being pulled back, and the drawing can be surely erased at the time of erasing.
【００３０】さらに、図８（ａ）に示すようにシート状
磁石２の裏側面に補強板３１を重合した磁気ボードにつ
いて説明する。上記補強板３１は木、プラスチック等の
合成樹脂、アルミニウムなどの非磁性体の金属等で板状
に形成され、シート状磁石２の裏側面に重合して適宜方
法で固定されている。この補強板３１は前面からの外力
でパネル１が歪まない程度の厚さと強度を有することが
好ましい。Further, as shown in FIG. 8A, a magnetic board in which a reinforcing plate 31 is superposed on the back side of the sheet-shaped magnet 2 will be described. The reinforcing plate 31 is made of wood, a synthetic resin such as plastic, or a non-magnetic metal such as aluminum in a plate shape, and is superposed on the back surface of the sheet magnet 2 and fixed by an appropriate method. The reinforcing plate 31 preferably has a thickness and strength such that the panel 1 is not distorted by an external force from the front surface.
【００３１】上述のように構成された磁気ボードは、パ
ネル１の裏側に消去用の磁石を移動させる空間を必要と
しないため磁気筆記具７での描画時や過ってパネル１上
に手をついてもパネル１が撓んで損傷することがない。
さらに、パネル１に歪みが発生することがなく大型の磁
気ボードを実現することができ、従来のホワイトボード
や黒板と同等のサイズに形成することができるとともに
（図８（ｂ）参照）、描画用筆記具としてマーカー等の
消耗品を使用する必要がないためランニングコストを低
減することができ、講義や会議に有効な磁気ボードを実
現することができる。The magnetic board constructed as described above does not require a space for moving the erasing magnet on the back side of the panel 1, so that the magnetic writing tool 7 may be used for drawing or the panel 1 may be touched by mistake. Also, the panel 1 is not bent and damaged.
Further, it is possible to realize a large-sized magnetic board without causing distortion in the panel 1, and it is possible to form the same size as a conventional whiteboard or a blackboard (see FIG. 8B) and to draw. Since it is not necessary to use a consumable item such as a marker as a writing instrument, running costs can be reduced and a magnetic board effective for lectures and conferences can be realized.
【００３２】なお、上記磁気ボードは本出願人の出願に
なる自動書き込み、自動消去機能を有する電子黒板（特
願平６ー１６４５７６）の磁気表示手段（磁気ボード）
として利用することができる。この場合は磁気ボードの
背面側に配置した消去手段が不要となるので構造を簡単
にすることができるとともに、磁気ボードが汚れたり破
損した時の交換作業を容易にすることができる。The magnetic board is a magnetic display means (magnetic board) of an electronic blackboard (Japanese Patent Application No. 6-164576) having automatic writing and erasing functions, which is the application of the present applicant.
Can be used as In this case, since the erasing means arranged on the back side of the magnetic board is not required, the structure can be simplified and the replacement work when the magnetic board is soiled or damaged can be facilitated.
【００３３】[0033]
【効果】請求項１の発明によれば、磁性粉と粘性流体と
を封入したセルからなるパネルに磁気筆記具で描いた文
字や絵は、パネルの表面に拡散手段を接触させるとセル
内の磁性粉が拡散し、パネルの裏側面に重合しているシ
ート状磁石がセルの下方から吸引するので、一旦筆記用
の磁石でセルの上部に吸引した磁性粉のうち、拡散手段
を接触させたセルの磁性粉のみセル内に拡散し、パネル
の下側面に重合しているシート状磁石に吸引され、上記
セル内のすべての磁性粉をセルの下部に移動しパネルの
表面から文字や絵を消去することができる。さらに、パ
ネルの表面に拡散手段を接触させた箇所のみの表示が消
去するので、描かれていた文字や絵の中で任意の場所の
みを消去することができる。According to the first aspect of the invention, a character or a picture drawn by a magnetic writing instrument on a panel consisting of a cell in which magnetic powder and a viscous fluid are enclosed is magnetic in the cell when a diffusing means is brought into contact with the surface of the panel. The powder diffuses, and the sheet-shaped magnet that is polymerized on the back side of the panel attracts from below the cell, so among the magnetic powder that was once attracted to the top of the cell by the writing magnet, the cell that the diffusing means was in contact with. Only the magnetic powder in the cell diffuses into the cell and is attracted to the sheet magnet that is superposed on the lower surface of the panel, and all the magnetic powder in the cell is moved to the bottom of the cell to erase characters and pictures from the surface of the panel. can do. Further, the display is erased only at the portion where the diffusing means is brought into contact with the surface of the panel, so that it is possible to erase only an arbitrary place in the drawn characters or pictures.
【００３４】請求項２の発明によれば、シート状磁石の
磁界の及ぶ範囲をスペーサの厚みで容易に調整すること
ができるので、描画時に筆記具の磁石で吸引した磁性粉
が引き戻されることがなく鮮明に描画できるとともに、
消去時には確実に描画を消去することができる。According to the invention of claim 2, the range of the magnetic field of the sheet-like magnet can be easily adjusted by the thickness of the spacer, so that the magnetic powder attracted by the magnet of the writing instrument at the time of drawing is not pulled back. You can draw clearly,
When erasing, the drawing can be surely erased.
【００３５】請求項３の発明によれば、パネルの裏側面
に消去用の磁石を移動させる空間を設ける必要がなく、
シート状磁石に直接補強板を重合することができるので
パネルの表面から外力を加えてもパネルが撓んで損傷す
ることがない。また、パネルに歪みが発生することがな
いので大型のパネルを形成することができ、従来のホワ
イトボードと同様に使用できる上、筆記具に消耗品を使
用しないのでランニングコストを低減することができ、
講義や会議に有効な磁気ボードを実現することができ
る。According to the invention of claim 3, it is not necessary to provide a space for moving the erasing magnet on the back side surface of the panel,
Since the reinforcing plate can be directly superposed on the sheet magnet, the panel is not bent and damaged even when an external force is applied from the surface of the panel. In addition, since a large panel can be formed because no distortion occurs in the panel, it can be used in the same way as a conventional whiteboard, and since no consumable item is used for the writing instrument, running cost can be reduced,
It is possible to realize a magnetic board that is effective for lectures and conferences.
【図１】磁気ボードの使用状態図[Fig. 1] Usage diagram of the magnetic board
【図２】磁気ボードの構成を示す要部を切断した斜視図FIG. 2 is a perspective view showing a configuration of a magnetic board with a main part cut away.
【図３】磁性粉の作動状態を示すパネルの断面図FIG. 3 is a sectional view of the panel showing an operating state of magnetic powder.
【図４】（ａ）（ｂ）は拡散手段の構成を示す断面図及
び斜視図4A and 4B are a cross-sectional view and a perspective view showing the structure of a diffusing unit.
【図５】（ａ）（ｂ）は拡散手段の使用状態を説明する
要部断面図5 (a) and 5 (b) are cross-sectional views of a main part for explaining a usage state of the diffusing means.
【図６】（ａ）（ｂ）（ｃ）は上記拡散手段の他の例の
構成を示す説明図6 (a), (b) and (c) are explanatory views showing the configuration of another example of the above-mentioned diffusing means.
【図７】磁気ボードの他の例の構成を示す断面図FIG. 7 is a sectional view showing the configuration of another example of the magnetic board.
【図８】（ａ）（ｂ）は磁気ボードのさらに他の例を示
す断面図及び斜視図8A and 8B are a sectional view and a perspective view showing still another example of the magnetic board.
【図９】（ａ）（ｂ）は従来の磁気ボードの使用状態を
示す平面図及び構成を説明する要部断面図9 (a) and 9 (b) are a plan view showing a usage state of a conventional magnetic board and a sectional view of an essential part for explaining the configuration.
１ パネル ２ シート状磁石 ４ 磁性粉 ５ 粘性流体 ６ セル ３０ スペーサ ３１ 補強板 Ａ 拡散手段 1 Panel 2 Sheet Magnet 4 Magnetic Powder 5 Viscous Fluid 6 Cell 30 Spacer 31 Reinforcing Plate A Diffusing Means
Claims (3)
面上に連続して配設したパネルと、上記セル内の磁性粉
を上方から拡散させる拡散手段と、該パネルの裏側全面
にわたって重合し上記拡散手段で拡散した磁性粉を下方
から吸引するシート状磁石とを備えたことを特徴とする
磁気ボード。1. A panel in which cells in which magnetic powder and a viscous fluid are enclosed are continuously arranged on a plane, a diffusing means for diffusing the magnetic powder in the cells from above, and a whole surface of the back side of the panel is polymerized. A magnetic board, comprising: a sheet-like magnet that attracts the magnetic powder diffused by the diffusing means from below.
磁性体のスペーサを挟着したことを特徴とする請求項１
に記載の磁気ボード。2. A non-magnetic spacer is sandwiched between the panel and the sheet-like magnet.
Magnetic board described in.
重合したことを特徴とする請求項１又は２に記載の磁気
ボード。3. The magnetic board according to claim 1, wherein a reinforcing plate is superposed on the back side surface of the sheet-shaped magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15859695A JPH08324184A (en) | 1995-06-01 | 1995-06-01 | Magnetic board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15859695A JPH08324184A (en) | 1995-06-01 | 1995-06-01 | Magnetic board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08324184A true JPH08324184A (en) | 1996-12-10 |
Family
ID=15675148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15859695A Pending JPH08324184A (en) | 1995-06-01 | 1995-06-01 | Magnetic board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08324184A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002016147A1 (en) * | 2000-08-21 | 2002-02-28 | Technology Tree Co., Ltd. | Learning board |
| WO2009090441A3 (en) * | 2007-12-21 | 2009-09-11 | Mpot Pte Ltd | Front erase magnetic drawing board and magnetic eraser |
| JP2019072908A (en) * | 2017-10-16 | 2019-05-16 | Ｚｅｒｏ Ｌａｂ株式会社 | Magnetic eraser |
| JP2019117246A (en) * | 2017-12-27 | 2019-07-18 | プラス株式会社 | eraser |
| JP2019171576A (en) * | 2018-03-27 | 2019-10-10 | Ｚｅｒｏ Ｌａｂ株式会社 | Magnetic writing utensil |
| WO2020144837A1 (en) * | 2019-01-11 | 2020-07-16 | Ｚｅｒｏ Ｌａｂ株式会社 | Magnetic pen |
| JP2022031404A (en) * | 2017-07-11 | 2022-02-18 | Ｚｅｒｏ Ｌａｂ株式会社 | Magnetic pen |
-
1995
- 1995-06-01 JP JP15859695A patent/JPH08324184A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002016147A1 (en) * | 2000-08-21 | 2002-02-28 | Technology Tree Co., Ltd. | Learning board |
| WO2009090441A3 (en) * | 2007-12-21 | 2009-09-11 | Mpot Pte Ltd | Front erase magnetic drawing board and magnetic eraser |
| JP2022031404A (en) * | 2017-07-11 | 2022-02-18 | Ｚｅｒｏ Ｌａｂ株式会社 | Magnetic pen |
| JP2019072908A (en) * | 2017-10-16 | 2019-05-16 | Ｚｅｒｏ Ｌａｂ株式会社 | Magnetic eraser |
| JP2019117246A (en) * | 2017-12-27 | 2019-07-18 | プラス株式会社 | eraser |
| JP2019171576A (en) * | 2018-03-27 | 2019-10-10 | Ｚｅｒｏ Ｌａｂ株式会社 | Magnetic writing utensil |
| WO2020144837A1 (en) * | 2019-01-11 | 2020-07-16 | Ｚｅｒｏ Ｌａｂ株式会社 | Magnetic pen |
| JPWO2020144837A1 (en) * | 2019-01-11 | 2021-02-18 | Ｚｅｒｏ Ｌａｂ株式会社 | Magnetic pen |
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