JPH05390Y2 - - Google Patents
Info
- Publication number
- JPH05390Y2 JPH05390Y2 JP7308184U JP7308184U JPH05390Y2 JP H05390 Y2 JPH05390 Y2 JP H05390Y2 JP 7308184 U JP7308184 U JP 7308184U JP 7308184 U JP7308184 U JP 7308184U JP H05390 Y2 JPH05390 Y2 JP H05390Y2
- Authority
- JP
- Japan
- Prior art keywords
- support shaft
- cylindrical portion
- grip
- ruler
- protractor
- 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.)
- Expired - Lifetime
Links
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 229920003002 synthetic resin Polymers 0.000 description 4
- 239000000057 synthetic resin Substances 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Landscapes
- Length-Measuring Instruments Using Mechanical Means (AREA)
Description
【考案の詳細な説明】
〈産業上の利用分野〉
本考案は、トラツクタイプ製図機等において定
規等を移動又は回転操作する操作部となる製図ヘ
ツドに関する。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a drafting head that serves as an operating section for moving or rotating a ruler or the like in a track-type drafting machine or the like.
〈背景技術とその問題点〉
従来より、第１図に示す如き製図ヘツドが知ら
れている。この製図ヘツドは、図板面の任意の位
置に移動自在な固定板５０に円筒状の支軸５１を
立設し、上記支軸５１上には分度盤５２が取付け
固定された円盤状の分度盤受け部材５３がネジ５
４により一体的に取付けられている。<Background Art and its Problems> Conventionally, a drafting head as shown in FIG. 1 has been known. This drafting head has a cylindrical support shaft 51 erected on a fixed plate 50 that is movable to any position on the drawing surface, and a disk-shaped protractor 52 is mounted and fixed on the support shaft 51. The protractor receiving member 53 is screwed 5
4 is integrally attached.
上記支軸５１の外径は下端側から上端側まで同
径に形成され、上記支軸５１の外周部にはグリツ
プ部５５の中心に形成した円筒部５６の内周部が
嵌合されている。上記グリツプ部には上記分度盤
５２の外周位置に該分度盤５２と同心状にバーニ
ア５７が配置されるとともに定規等が一体に取付
けられる。 The outer diameter of the support shaft 51 is the same from the lower end to the upper end, and the inner peripheral portion of a cylindrical portion 56 formed at the center of the grip portion 55 is fitted into the outer peripheral portion of the support shaft 51. . A vernier 57 is disposed on the outer periphery of the protractor 52 concentrically with the protractor 52, and a ruler or the like is integrally attached to the grip portion.
そして、上記グリツプ部５５の軸回り方向の回
転操作によつて、上記バーニア５７の目盛りを分
度盤５２の所定目盛に合わせることにより、定規
等を図板面において任意の角度に設定し得るよう
になつている。 By rotating the grip portion 55 around the axis, the scale of the vernier 57 is aligned with the predetermined scale of the protractor 52, so that a ruler or the like can be set at any angle on the drawing board. It's getting old.
ところで、上記製図ヘツドにおいて、上記支軸
５１を含め固定板５０全体、及び上記円筒部５６
を含めグリツプ部５５全体が合成樹脂により形成
されているものにあつては、グリツプ部５５の回
転操作時の摩擦熱又は環境温度の変化により、上
記支軸５１及び／又は円筒部５６が膨張及び／又
は収縮し、上記支軸５１と円筒部５６の嵌合部分
に隙間が生じ、グリツプ部５５を安定した状態で
回転操作することができず、定規等を正確な角度
をもつて図板面に設置することが困難なものとな
る。 By the way, in the drafting head, the entire fixed plate 50 including the support shaft 51 and the cylindrical portion 56 are
In the case where the grip portion 55 as a whole is made of synthetic resin, the support shaft 51 and/or the cylindrical portion 56 may expand and expand due to frictional heat or changes in environmental temperature during rotation of the grip portion 55. or shrink, and a gap is created at the fitting part of the support shaft 51 and the cylindrical part 56, making it impossible to rotate the grip part 55 in a stable state, and holding a ruler or the like at an accurate angle on the drawing surface. This makes it difficult to install.
〈考案の目的〉
そこで、本考案はこのような従来の実情に鑑み
て提案されたものであり、グリツプ部を常に安定
した状態で回転操作し得るようにし、定規等を正
確な角度をもつて図板面に設置し得るようにする
ことを目的とする。<Purpose of the invention> Therefore, the present invention was proposed in view of the conventional situation, and it is possible to rotate the grip part in a stable state at all times, and to make it possible to hold a ruler, etc. at an accurate angle. The purpose is to make it possible to install it on the drawing surface.
〈考案の概要〉
本考案は、上記目的を達成するために、図板面
の任意の位置に移動自在な固定部材に円錐台形の
支軸を立設するとともに、定規等が一体的に取付
けられるグリツプ部の中心に設けた円周部が逆円
錐台形をなす筒部を上記支軸に回転自在に嵌合
し、上記固定部材とグリツプ部との間に上記筒部
を上記支軸に嵌合する方向に弾発付勢するバネ部
材を設けてなることを特徴とするものである。<Summary of the invention> In order to achieve the above object, the present invention has a truncated conical support shaft erected on a movable fixed member at any position on the drawing surface, and a ruler etc. is integrally attached. A cylindrical portion provided at the center of the grip portion and having an inverted truncated conical circumference is rotatably fitted to the support shaft, and the cylindrical portion is fitted to the support shaft between the fixing member and the grip portion. The device is characterized in that it is provided with a spring member that resiliently biases the device in the direction in which the device moves.
〈実施例〉
以下、本考案の一実施例を図面を参照しながら
具体的に説明する。<Example> Hereinafter, an example of the present invention will be specifically described with reference to the drawings.
第２図は本考案をトラツクタイプ製図機に適用
した例を示す縦断側面図である。この製図ヘツド
は固定板１を有してなる。上記固定板１は図板面
に沿つて移動自在なレール体内に組込まれている
キヤリツジにヒンジ部１００を介して取付けら
れ、図板面の任意の位置に移動自在に支持され
る。 FIG. 2 is a longitudinal sectional side view showing an example in which the present invention is applied to a track type drawing machine. This drafting head has a fixed plate 1. The fixing plate 1 is attached via a hinge portion 100 to a carriage built into a rail body that is movable along the drawing surface, and is movably supported at any position on the drawing surface.
上記固定板１上には円錐台形の支軸２が突設さ
れている。上記支軸２を含め固定板１全体は合成
樹脂により一体形成され、上記支軸２は中空状に
形成されている。上記支軸２の外周部の下端寄り
の位置には環状段部３が形成され、上記支軸２の
外周部の上記段部３から上端までは勾配5°に形成
されている。 A truncated conical support shaft 2 is provided on the fixed plate 1 in a protruding manner. The entire fixed plate 1 including the support shaft 2 is integrally formed of synthetic resin, and the support shaft 2 is formed in a hollow shape. An annular step 3 is formed at a position near the lower end of the outer periphery of the support shaft 2, and the slope from the step 3 to the upper end of the outer periphery of the support shaft 2 is 5°.
上記支軸２の上部の中央にはテーパ孔４が軸方
向に貫通形成され、上記テーパ孔４には円環状の
分度盤５が表面に取付けられた円盤状の分度盤受
け部材６の裏面中央に突設した逆円錐台形の中空
軸部７が嵌合され、さらに上記該軸部７は座金８
を介してネジ９により、上記支軸２に同軸状に固
定されている。上記軸部７を逆円錐台形に形成
し、上記テーパ孔４に嵌合させることにより、上
記支軸２と軸部７の同軸度は高精度なものとな
る。 A tapered hole 4 is formed axially through the center of the upper part of the support shaft 2, and a disk-shaped protractor receiving member 6 with an annular protractor 5 attached to the surface thereof is inserted into the taper hole 4. An inverted truncated conical hollow shaft portion 7 protruding from the center of the back surface is fitted, and the shaft portion 7 is fitted with a washer 8.
It is coaxially fixed to the support shaft 2 with a screw 9 via. By forming the shaft portion 7 into an inverted truncated cone shape and fitting it into the tapered hole 4, the coaxiality of the support shaft 2 and the shaft portion 7 becomes highly accurate.
また、上記支軸２の外周部には定規、テンプレ
ート等が一体的に組付られるグリツプ部１０の中
心に形成した逆円錐台形の筒部１１の内周部が嵌
合されている。上記筒部１１を含めグリツプ部１
０全体は合成樹脂により一体成形され、上記筒部
１１の内周部の上端から下端まで勾配5°に形成さ
れている。 Further, the inner circumferential portion of an inverted truncated conical cylinder portion 11 formed at the center of a grip portion 10 to which a ruler, template, etc. are integrally assembled is fitted onto the outer circumferential portion of the support shaft 2. Grip portion 1 including the cylindrical portion 11
The entire cylindrical portion 11 is integrally molded from synthetic resin, and the inner circumferential portion of the cylindrical portion 11 has an inclination of 5° from the upper end to the lower end.
上記グリツプ部１０において上記分度盤５の外
周部に臨む位置には円環状のバーニア１２が上記
分度盤５と同一平面をなすように取付けられてい
る。 An annular vernier 12 is attached to the grip portion 10 at a position facing the outer periphery of the protractor 5 so as to be flush with the protractor 5.
また、上記軸部７には上記筒部１１の上端に載
置されるように座金１３が嵌挿されており、この
座金１３と上記分度盤受け部材６との間にはスラ
ストベアリング１４を介して上記筒部１１を上記
支軸２に嵌合する方向（第１図中下方向）に弾発
付勢する圧縮コイルバネ１５が介在されている。 Further, a washer 13 is fitted into the shaft portion 7 so as to be placed on the upper end of the cylindrical portion 11, and a thrust bearing 14 is inserted between the washer 13 and the protractor receiving member 6. A compression coil spring 15 is interposed therebetween to resiliently bias the cylindrical portion 11 in the direction of fitting the support shaft 2 (downward in FIG. 1).
このように、上記実施例によればグリツプ部１
０の回転時に発生する摩擦熱又は環境温度の変化
により、上記支軸２及び／又は筒部１１が膨張及
び／又は収縮し、上記支軸２と筒部１１との嵌合
部にはめ合い寸法誤差が生じても、上記筒部１１
に作用する上記圧縮コイルバネ１５の弾発力によ
り、上記誤差を吸収し、上記支軸２と筒部１１を
密接嵌合状態に置くことができ、グリツプ部１０
を常に安定した状態で回転操作することができ
る。したがつて、定規等を正確な角度をもつて図
板面に設置することができる。 In this way, according to the above embodiment, the grip portion 1
Due to the frictional heat generated during the rotation of the shaft 0 or changes in environmental temperature, the support shaft 2 and/or the cylindrical portion 11 expand and/or contract, and the fitting dimension of the fitting portion between the support shaft 2 and the cylindrical portion 11 increases. Even if an error occurs, the cylindrical portion 11
The elastic force of the compression coil spring 15 acting on the shaft absorbs the error and allows the support shaft 2 and the cylindrical portion 11 to be tightly fitted, and the grip portion 10
can be rotated in a stable state at all times. Therefore, a ruler or the like can be placed on the drawing surface at an accurate angle.
また、上記圧縮コイルバネ１５をスラストベア
リング１４を介してグリツプ部１０に係合させた
ことにより、上記グリツプ部１０の円滑な回転操
作を保障することができる。 Further, by engaging the compression coil spring 15 with the grip portion 10 via the thrust bearing 14, smooth rotational operation of the grip portion 10 can be ensured.
なお、本考案は上記支軸２及び筒部１１がアル
ミニユウム合金等により形成され、上記支軸２と
筒部１１の嵌合部の寸法精度が荒くなつていて
も、上記支軸２と筒部１１を確実に密接嵌合する
ことができ、上記支軸２及び筒部１１の製造加工
が容易なものとなる。 In addition, in the present invention, even if the support shaft 2 and the cylindrical portion 11 are formed of an aluminum alloy or the like, and the dimensional accuracy of the fitting portion between the support shaft 2 and the cylindrical portion 11 is rough, the support shaft 2 and the cylindrical portion 11 can be reliably and closely fitted, and the manufacturing process of the support shaft 2 and the cylindrical portion 11 becomes easy.
〈考案の効果〉
このように、本考案によれば、固定部材の支軸
及びこの支軸に嵌合されるグリツプ部の筒部が、
例えば合成樹脂により形成され、グリツプ部の回
転時に発生する摩擦熱又は環境温度の変化によ
り、上記支軸及び／又は筒部が膨張及び／又は収
縮し、上記支軸と筒部との嵌合部にはめ合い寸法
誤差が生じても、上記筒部に作用するバネ部材の
弾発力により、上記誤差を吸収し、上記支軸と筒
部を密接嵌合状態に置くことができ、グリツプ部
を常に安定した状態で回転操作することができ
る。したがつて、定規等を正確な角度をもつて図
板面に設置することができる。<Effect of the invention> As described above, according to the invention, the support shaft of the fixing member and the cylindrical portion of the grip part fitted to the support shaft are
For example, the support shaft and/or the cylindrical part expand and/or contract due to frictional heat generated when the grip part rotates or changes in environmental temperature, and the fitting part between the support shaft and the cylindrical part is made of, for example, synthetic resin. Even if there is a dimensional error in the fit, the elastic force of the spring member acting on the cylindrical portion can absorb the error and place the support shaft and the cylindrical portion in a close-fitting state, allowing the grip portion to It can be rotated in a stable state at all times. Therefore, a ruler or the like can be placed on the drawing surface at an accurate angle.
第１図は従来例を示す縦断側面図、第２図は本
考案の一実施例を示す縦断側面図である。
１……固定板、２……支軸、６……分度盤受け
部材、１０……グリツプ部、１１……筒部、１５
……圧縮コイルバネ。
FIG. 1 is a longitudinal side view showing a conventional example, and FIG. 2 is a longitudinal side view showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Fixed plate, 2... Support shaft, 6... Protractor receiving member, 10... Grip part, 11... Cylindrical part, 15
...Compression coil spring.
Claims (1)
錐台形の支軸を立設するとともに、定規等が一体
的に取付けられるグリツプ部の中心に設けた円周
部が逆円錐台形をなす筒部を上記支軸に回転自在
に嵌合し、上記固定部材とグリツプ部との間に上
記筒部を上記支軸に嵌合する方向に弾発付勢する
バネ部材を設けてなる製図ヘツド。 A truncated cone-shaped support shaft is set upright on a fixed member that can be moved to any position on the drawing surface, and a cylinder whose circumference forms an inverted truncated cone is provided at the center of the grip section to which a ruler, etc. is integrally attached. The drafting head is rotatably fitted to the support shaft, and a spring member is provided between the fixing member and the grip portion to resiliently bias the cylindrical portion in a direction to fit the support shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7308184U JPS60184696U (en) | 1984-05-21 | 1984-05-21 | drafting head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7308184U JPS60184696U (en) | 1984-05-21 | 1984-05-21 | drafting head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60184696U JPS60184696U (en) | 1985-12-07 |
| JPH05390Y2 true JPH05390Y2 (en) | 1993-01-07 |
Family
ID=30612104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7308184U Granted JPS60184696U (en) | 1984-05-21 | 1984-05-21 | drafting head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60184696U (en) |
-
1984
- 1984-05-21 JP JP7308184U patent/JPS60184696U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60184696U (en) | 1985-12-07 |
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