JPS5916913Y2 - Curtain shutter start position adjustment device - Google Patents
Curtain shutter start position adjustment deviceInfo
- Publication number
- JPS5916913Y2 JPS5916913Y2 JP1975128620U JP12862075U JPS5916913Y2 JP S5916913 Y2 JPS5916913 Y2 JP S5916913Y2 JP 1975128620 U JP1975128620 U JP 1975128620U JP 12862075 U JP12862075 U JP 12862075U JP S5916913 Y2 JPS5916913 Y2 JP S5916913Y2
- Authority
- JP
- Japan
- Prior art keywords
- drum
- curtain
- elongated hole
- shutter
- fixed
- 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
Links
Landscapes
- Shutters For Cameras (AREA)
Description
【考案の詳細な説明】
この考案は幕シャッターのスタート位置の微調整装置に
関するものである。[Detailed Description of the Invention] This invention relates to a device for finely adjusting the start position of a curtain shutter.
フィルム面の直前に展張された2枚のゴム引き布幕、ま
たは金属幕を横方向または縦方向に走行させ、先幕と後
幕で形成されるスリットにより、フィルムに露光を与え
るようにした幕シャッターは、第1図にその一例を示す
如く、先幕1と後幕2とから成っており先幕1の先端縁
は先幕の巻取ドラム3に、また尾端縁はスリット形成用
金具4に、それぞれ固着され、また後幕2の先端縁はス
リット形成用金具5に、また尾端縁は後幕2の巻戻しド
ラム6にそれぞれ固着されていて、スリット形成用金具
4の上下端部にその各一端が固定された張帯7,7の各
他端が、後幕の巻戻しドラム6の支軸8に遊嵌せられた
ブー’J −9,9を介して先幕の巻上げ軸10に、適
宜固着されることによって先幕1が、また上記スリット
形成用金具5の上下端部に各一端が固定された張帯11
.11の各他端が先幕の巻取ドラム3の支軸12に遊嵌
されたプーリー13.13を介して後幕走行ドラム14
に、適宜固装されることによって後幕2がそれぞれフィ
ルム面の直前に展張せられ、鎖線で示すアパーチュア1
5からの光を遮るようになっている。A curtain in which two rubberized cloth curtains or metal curtains are stretched in front of the film surface and run horizontally or vertically, exposing the film to light through slits formed by the leading and trailing curtains. As an example of the shutter is shown in Fig. 1, the shutter consists of a leading curtain 1 and a trailing curtain 2. The leading edge of the leading curtain 1 is attached to the winding drum 3 of the leading curtain, and the tail edge is attached to a metal fitting for forming a slit. The leading edge of the trailing curtain 2 is fixed to the slit-forming metal fitting 5, and the tail edge of the trailing curtain 2 is fixed to the rewinding drum 6 of the trailing curtain 2. The other ends of the tension strips 7, 7, each of which is fixed at one end to the front curtain, are connected to the front curtain through the Boo'J-9, 9, which is loosely fitted to the spindle 8 of the rear curtain rewind drum 6. The front curtain 1 is appropriately fixed to the winding shaft 10, and the tension strips 11 each have one end fixed to the upper and lower ends of the slit forming metal fittings 5.
.. The other ends of the winding drum 11 are connected to the trailing curtain traveling drum 14 via pulleys 13 and 13 loosely fitted to the spindle 12 of the winding drum 3 of the leading curtain.
The trailing curtains 2 are each extended just in front of the film surface by being fixed as appropriate, and the apertures 1 shown by chain lines are formed.
It is designed to block the light from 5.
そして撮影時には巻取ドラム3および後幕走行ドラム1
4がそれぞれ原動ばね16,17で駆動され、アパーチ
ュア15を、前記金具4,5で形成されるスリットが横
切ることによりフィルム面に露光が与えられるようにな
っていることは周知の通りである。At the time of shooting, the winding drum 3 and the trailing curtain traveling drum 1 are
As is well known, the metal fittings 4 and 4 are driven by driving springs 16 and 17, respectively, and the slit formed by the metal fittings 4 and 5 crosses the aperture 15, thereby exposing the film surface to light.
またシャッターを切ったのちの両シャッター幕1,2は
フィルムの巻き上げに連動して回動する歯車18で軸1
0とドラム6に巻き戻され、スタート位置に復元する。Also, after the shutter is released, both shutter curtains 1 and 2 are connected to shaft 1 by a gear 18 that rotates in conjunction with the winding of the film.
0 and is rewound to the drum 6 and restored to the starting position.
この際、両スリット金具4,5は適宜型なり合い係合し
て復元し、原動ばね16,17はチャージされる。At this time, both the slit fittings 4 and 5 are properly engaged and restored, and the driving springs 16 and 17 are charged.
しかしこのように構成せられている従来のフォーカルプ
レーンシャッターは原動ばね16,17によって幕速が
一定に決められているので、シャッターの組立時にスリ
ット形成用金具4,5のスター ト位置を決めるのが非
常に厄介であり、しがもこの位置を正確に規制しておか
ないとシャッタースピードに誤差を生じると゛いう幕シ
ャッターの致命的な欠点となる。However, in the conventional focal plane shutter configured in this way, the curtain speed is fixed at a constant speed by the driving springs 16 and 17, so the starting position of the slit forming fittings 4 and 5 must be determined when assembling the shutter. This is extremely troublesome, and if this position is not precisely regulated, errors will occur in the shutter speed, which is a fatal drawback of the curtain shutter.
よって従来のものではシャッター幕の端部が固定された
ドラムと、同ドラムの支軸とを一体化する際、その都度
固定角度を微細に調節したのち、これを固定している。Therefore, in the conventional system, when a drum to which the end of the shutter curtain is fixed is integrated with a supporting shaft of the drum, the fixing angle is finely adjusted each time, and then the drum is fixed.
しがしこの調整手段は非常に時間がか・す、一度固定し
てしまうと、その・ち調整ができないという欠点を伴っ
ている。However, this adjustment means is very time consuming and has the disadvantage that once it is fixed, it cannot be adjusted again.
またこの調整手段の一つとしてドラム支軸8および巻上
げ軸10の固装された歯車19.20と、フィルムの巻
き上げに連動して回動する歯車18とのかみ合い位置を
変える手段もあるが、これは歯車の一歯骨の回動角がそ
の歯車の歯数により決められてしまうので、デジタルな
調整角度となり微細な調整を行なうには不向きである。Also, as one of the adjustment means, there is a means for changing the meshing position between the fixed gears 19 and 20 of the drum support shaft 8 and the winding shaft 10, and the gear 18 that rotates in conjunction with the winding of the film. This is because the rotation angle of one tooth of the gear is determined by the number of teeth of the gear, resulting in a digital adjustment angle, which is unsuitable for making fine adjustments.
本考案はシャツタ幕の端部が固定されたドラムとこのド
ラムの支軸との間に位置調整部材を設けることにより上
記不具合を解決し得る様にしたものである。The present invention solves the above-mentioned problems by providing a position adjustment member between the drum to which the end of the shirt curtain is fixed and the support shaft of this drum.
以下、第2図、第3図に示される一実施例に基づき本考
案を説明する。The present invention will be explained below based on an embodiment shown in FIGS. 2 and 3.
図中、シャツタ幕端部が固着されるドラム6の側壁には
、ドラム回転軸穴方向の第1の長孔6aが設けられてい
る。In the figure, a first elongated hole 6a extending in the direction of the drum rotation shaft hole is provided in the side wall of the drum 6 to which the end of the shirt flap is fixed.
上記ドラム回転軸Aに対し一定の傾斜角αを持つ第2の
長孔21 aを有する位置調整部材21はその巾を上記
第1の長孔6aと同程度にされており、上記第1の長孔
6a内にて回転軸A方向にのみ摺動可能と威されている
。The position adjustment member 21 having a second elongated hole 21a having a constant inclination angle α with respect to the drum rotation axis A has a width approximately equal to that of the first elongated hole 6a. It is possible to slide only in the direction of the rotation axis A within the elongated hole 6a.
頭部22 aを有する位置固定部材22は、上記第2の
長孔21 aを慣通して前記支軸8に螺着されている。A position fixing member 22 having a head 22a is threaded onto the support shaft 8 by passing through the second elongated hole 21a.
上記構成においては、まず位置固定部材22をゆるめる
ことにより、位置調整部材21を摺動可能の状態におか
せる。In the above configuration, first, by loosening the position fixing member 22, the position adjustment member 21 is placed in a slidable state.
この状態で位置調整部材21を適宜上下動させると、そ
の傾斜した第2の長孔21 aと位置固定部材22との
相対的関係により、上記位置調整部材21は上下動しな
がら回転運動を行うこととなる。When the position adjustment member 21 is moved up and down appropriately in this state, the position adjustment member 21 performs a rotational movement while moving up and down due to the relative relationship between the inclined second elongated hole 21a and the position fixing member 22. That will happen.
一方、ドラム6は上記位置調整部材21より回転方向の
力のみをうけることとなる。On the other hand, the drum 6 receives only a rotational force from the position adjustment member 21.
従って、位置調整部材21の作動によりドラム6の回転
位置つまり幕シヤツタのスタート位置を自由に整定する
ことができる。Therefore, by operating the position adjustment member 21, the rotational position of the drum 6, that is, the start position of the curtain shutter can be freely set.
また、上記第2の長孔21の傾斜角度を変更した位置調
整部材を数種類用意しておけば、その調整量の粗微動を
自由に調整することができる。Further, by preparing several types of position adjustment members in which the inclination angle of the second elongated hole 21 is changed, coarse and fine movements of the adjustment amount can be freely adjusted.
上記調整を終えた後、位置固定部材22をドラム6内へ
押し込みその頭部22 aにて位置調整部材21を押圧
固定することにより支軸8に対するドラム6の回転位置
を整定することができる。After completing the above adjustment, the position fixing member 22 is pushed into the drum 6 and the position adjusting member 21 is pressed and fixed by its head 22a, thereby making it possible to settle the rotational position of the drum 6 with respect to the support shaft 8.
上記した如く、本考案は位置調整部材を上下に摺動させ
るだけで幕のスタート位置を自由に調整でき、しかもそ
の調整を連続的なアナログ量として微細に行なわせるこ
とができる。As described above, according to the present invention, the starting position of the curtain can be freely adjusted by simply sliding the position adjustment member up and down, and furthermore, the adjustment can be made finely as a continuous analog quantity.
第1図は本発明が適用されるフォーカルプレンシャッタ
の一例を示す斜視図、第2図は本発明の一実施例を示す
正面図、第3図は上記実施例の断面図である。
6・・・・・・シャツタ幕取付ドラム、6a・・・・・
・第1の長孔、8・・・・・・支軸、21・・・・・・
位置調整部材、21 a・・・・・・第2の長孔、22
・・・・・・位置固定部材。FIG. 1 is a perspective view showing an example of a focal plane shutter to which the present invention is applied, FIG. 2 is a front view showing an embodiment of the present invention, and FIG. 3 is a sectional view of the above embodiment. 6...Shutter curtain mounting drum, 6a...
・First long hole, 8... Support shaft, 21...
Position adjustment member, 21 a...Second long hole, 22
...Position fixing member.
Claims (1)
ドラムを保持する支軸と、上記ドラムの側壁にドラム回
転軸方向に設けられた第1の長孔と、ドラム回転軸と一
定の傾斜角度をもつ第2の長孔を有し上記第1の長孔内
で摺動可能な位置調整部材と、上記第2の長孔を慣通し
て支軸に取付けられた位置固定部材とより戊り、上記位
置固定部材により位置調整部材の位置を固定するように
したことを特徴とする幕シヤツタのスタート位置調整装
置。A shutter drum to which an end of the shutter curtain is fixed, a support shaft for holding the drum, a first elongated hole provided in the side wall of the drum in the direction of the drum rotation axis, and a constant inclination angle with the drum rotation axis. a position adjusting member having a second elongated hole having a second elongated hole and slidable within the first elongated hole; and a position fixing member passing through the second elongated hole and attached to the support shaft. . A start position adjusting device for a curtain shutter, characterized in that the position of the position adjusting member is fixed by the position fixing member.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1975128620U JPS5916913Y2 (en) | 1975-09-18 | 1975-09-18 | Curtain shutter start position adjustment device |
US05/705,546 US4084170A (en) | 1975-07-22 | 1976-07-15 | Focal plane shutter |
DE19762660647 DE2660647C2 (en) | 1975-07-22 | 1976-07-22 | Focal plane shutter for a camera |
DE2633040A DE2633040C2 (en) | 1975-07-22 | 1976-07-22 | Focal plane shutter for a photographic camera |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1975128620U JPS5916913Y2 (en) | 1975-09-18 | 1975-09-18 | Curtain shutter start position adjustment device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5241634U JPS5241634U (en) | 1977-03-24 |
JPS5916913Y2 true JPS5916913Y2 (en) | 1984-05-17 |
Family
ID=28608960
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1975128620U Expired JPS5916913Y2 (en) | 1975-07-22 | 1975-09-18 | Curtain shutter start position adjustment device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5916913Y2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2530041A1 (en) * | 1982-07-09 | 1984-01-13 | Omera Segid | CURVED PHOTO SHUTTER |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4944897A (en) * | 1972-09-04 | 1974-04-27 |
-
1975
- 1975-09-18 JP JP1975128620U patent/JPS5916913Y2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4944897A (en) * | 1972-09-04 | 1974-04-27 |
Also Published As
Publication number | Publication date |
---|---|
JPS5241634U (en) | 1977-03-24 |
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