JPH0333516Y2

JPH0333516Y2 -

Info

Publication number: JPH0333516Y2
Application number: JP1985011889U
Authority: JP
Priority date: 1985-01-30
Filing date: 1985-01-30
Publication date: 1991-07-16
Also published as: JPS61128091U

Description

【考案の詳細な説明】（産業上の利用分野）本考案は、鉛筆で高速作図のできるプロツタ用
ペンホルダに関し、詳しくはシヤープペンシルの
芯を使用するプロツタ用ペンホルダの改良に関す
る。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a pen holder for a plotter that allows high-speed drawing with a pencil, and more specifically to an improvement of a pen holder for a plotter that uses a sharp pencil lead.

（従来技術）第２図は、シヤープペンシルの芯を使用する従
来のプロツタ用ペンホルダを示す。ペンホルダ２
０の主要部は、シヤープペンシルの芯２１を保持
する芯ホルダ２２と、この芯ホルダを保持するホ
ルダ外筒２３で構成されている。(Prior Art) FIG. 2 shows a conventional plotter pen holder that uses a sharp pencil lead. pen holder 2
The main parts of 0 are composed of a lead holder 22 that holds a sharp pencil lead 21 and a holder outer cylinder 23 that holds this lead holder.

（考案が解決しようとする問題点）このペンホルダ２０をプロツタ（図示せず）に
装着してパターン（線）を描画する際、一定方向
にしばらく描画した後、ひき続いてほぼ逆方向に
線を描画すると、第３図に示すように、その前後
で描画される線の濃さに違いを生ずる。このよう
に、従来のシヤープペンシル用芯を使用するペン
ホルダは、描画する線に濃淡を生ずる欠点があつ
た。(Problem to be solved by the invention) When drawing a pattern (line) by attaching this pen holder 20 to a printer (not shown), after drawing in a certain direction for a while, the line is then drawn in almost the opposite direction. When drawing, as shown in FIG. 3, there is a difference in the density of the lines drawn before and after the drawing. As described above, the conventional pen holder using the lead for a sharp pencil has the disadvantage that the lines drawn are shaded.

本考案者は、描画する線に濃淡が生ずる原因に
つき、鋭意検討した結果、次のことが明らかにな
つた。第４図に示すように、シヤープペンシルの
芯２１は、定常状態では線の描画方向に対して僅
かに斜めに摺り減りＡ、描画方向が変わる（図で
は逆転する）と、その直後Ｂは、紙との接触面積
が小さいので単位面積当りの接触圧が大きくな
り、結果として定常状態Ａの場合よりも線は濃く
描画される。そして平坦Ｃになつてややうすくな
り、定常状態A′に移行した後は一定の濃さで描
画される。 The inventor of the present invention has made the following findings as a result of intensive investigation into the causes of shading in drawn lines. As shown in FIG. 4, in a steady state, the lead 21 of the sharpening pencil wears down slightly diagonally with respect to the line drawing direction A, and when the drawing direction changes (reversed in the figure), immediately after that B. Since the contact area with the paper is small, the contact pressure per unit area is large, and as a result, the line is drawn darker than in steady state A. Then, the image becomes flat C and becomes slightly thinner, and after transitioning to steady state A', the image is drawn at a constant density.

したがつて、この考案においては、描画方向が
変わつても、芯の方向が常に描画方向に一致する
ようにすることを技術的課題とする。 Therefore, the technical problem of this invention is to ensure that the direction of the core always matches the drawing direction even if the drawing direction changes.

（問題点を解決するための手段）上記の技術的課題を解決するために、本考案
は、シヤープペンシル用の芯を保持する芯ホルダ
をホルダ外筒に回転可能に保持するとともに、芯
ホルダに一部が被記録面に接触する回転補助手段
を設け、描画方向に追従して芯が一定方向に向く
ようにした。(Means for Solving the Problems) In order to solve the above technical problems, the present invention rotatably holds a lead holder for holding a lead for a sharp pencil in a holder outer cylinder, and A rotation assisting means that partially contacts the recording surface is provided to follow the drawing direction so that the core is oriented in a fixed direction.

（実施例）第１図は、本考案の一実施例である。回転補助
手段１１としてキヤスタを芯ホルダ２２の端部で
且つ回転中心軸２４に対して偏心した位置に取付
け、描画方向に追従して芯２１が一定方向に向く
ように芯ホルダ２２をホルダ外筒２３内で回転す
るように構成してある。又、キヤスタに代え、弾
性をもつたアームを取付けてもよい。(Example) FIG. 1 shows an example of the present invention. A caster is attached as the rotation assisting means 11 at the end of the lead holder 22 and at a position eccentric to the rotation center axis 24, and the lead holder 22 is attached to the holder outer cylinder so that the lead 21 follows the drawing direction and faces in a certain direction. It is configured to rotate within 23. Moreover, an elastic arm may be attached instead of the caster.

なお、芯ホルダ２２はホルダ外筒２３内で、ベ
アリング等で保持して回転を滑らかにすることが
望ましい。 Note that it is desirable that the core holder 22 be held within the holder outer cylinder 23 with a bearing or the like to ensure smooth rotation.

（効果）本考案では、キヤスタによつて芯ホルダが回転
して描画方向に追従するので、描画方向が変わつ
ても、芯が常に一定方向に向き常に芯の先端は定
常状態（描画方向に対して斜めに摺り減つた状態
……第４図のＡ）になる。そのため、描画される
線は、濃淡を生じることなく、常に一定の濃さを
保つ。(Effect) In this invention, the lead holder is rotated by the caster and follows the drawing direction, so even if the drawing direction changes, the lead always faces the same direction and the tip of the lead is always in a steady state (relative to the drawing direction). The state is shown in A) in Fig. 4, where the material is worn down diagonally. Therefore, the drawn line always maintains a constant density without any shading.

[Brief explanation of the drawing]

第１図は本考案の一実施例を示すプロツタ用ペ
ンホルダ、第２図は従来のプロツタ用ペンホル
ダ、第３図は従来のペンホルダによつて描画した
線の濃淡を示す。第４図は描画方向が変わつたと
きに生ずる芯の先端形状の違いを示す。図中の符号、１１……回転補助手段、２０……
ペンホルダ、２１……芯、２２……芯ホルダ、２
３……ホルダ外筒、２４……回転中心軸、２５…
…被記録面。 FIG. 1 shows a pen holder for a plotter showing an embodiment of the present invention, FIG. 2 shows a conventional pen holder for a plotter, and FIG. 3 shows the shading of lines drawn by the conventional pen holder. FIG. 4 shows the difference in the tip shape of the lead that occurs when the drawing direction changes. Reference numerals in the figure, 11...Rotation assisting means, 20...
Pen holder, 21... lead, 22... lead holder, 2
3...Holder outer cylinder, 24...Rotation center axis, 25...
...Recorded surface.

Claims

[Claims for Utility Model Registration] (1) A lead holder that holds a lead for a sharp pencil is rotatably held in a holder outer cylinder, and a part of the lead holder is in contact with the recording surface, and the drawing direction is A pen holder for a plotter, the pen holder being provided with a rotation assisting means for rotating the lead holder so that the lead follows the wear direction of the leading end of the lead. (2) The plotter pen holder according to claim (1), wherein the rotation assisting means is a caster. (3) The pen holder for a plotter according to claim (1), wherein the rotation assisting means is an elastic arm.