JPH0123133Y2 - - Google Patents
Info
- Publication number
- JPH0123133Y2 JPH0123133Y2 JP1980012440U JP1244080U JPH0123133Y2 JP H0123133 Y2 JPH0123133 Y2 JP H0123133Y2 JP 1980012440 U JP1980012440 U JP 1980012440U JP 1244080 U JP1244080 U JP 1244080U JP H0123133 Y2 JPH0123133 Y2 JP H0123133Y2
- Authority
- JP
- Japan
- Prior art keywords
- light
- shielding lid
- shielding
- pressure plate
- operation knob
- 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
- 239000000758 substrate Substances 0.000 description 14
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Details Of Cameras Including Film Mechanisms (AREA)
Description
【考案の詳細な説明】
本考案はカメラに着脱自在なフイルムバツクに
関する。[Detailed Description of the Invention] The present invention relates to a film back that can be attached to and detached from a camera.
この種フイルムバツクとしては、使用途中でフ
イルムバツクを交換可能とする為に、カメラボデ
イ背面に対応した開口部の両側にフイルム供給室
とフイルム巻取室とを形成すると共に、該開口部
を通つてフイルム供給室とフイルム巻取室との間
に渡されたフイルムをカメラのガイドレール面に
向つて押圧する圧板と、フイルムバツク自体を光
密とするために前記開口部を遮蔽する遮光蓋と、
該遮光蓋によつて開口部を遮蔽する動作に連動し
て圧板とフイルムを遮光蓋の作動軌道外へと退避
させる機構とを備えたものが考えられる。しか
し、このフイルムバツクは遮光蓋の遮蔽動作に連
動して圧板とフイルムとを退避させる構成を有す
る場合、この圧板とフイルムが遮光蓋の負荷とな
る。その結果、遮蔽動作の円滑性が損われること
になるし、また遮光蓋の変形を招来する。 This type of film bag has a film supply chamber and a film take-up chamber formed on both sides of an opening corresponding to the back surface of the camera body, and allows the film bag to be replaced during use. a pressure plate that presses the film passed between the film supply chamber and the film take-up chamber toward the guide rail surface of the camera; and a light-shielding lid that shields the opening in order to make the film bag itself light-tight. ,
It is conceivable to have a mechanism that retracts the pressure plate and the film out of the operating trajectory of the light-shielding lid in conjunction with the operation of shielding the opening with the light-shielding lid. However, when this film back has a structure in which the pressure plate and the film are retracted in conjunction with the shielding operation of the light-shielding lid, the pressure plate and the film become a load on the light-shielding lid. As a result, the smoothness of the shielding operation is impaired and the light shielding lid is deformed.
本考案の目的は上記欠点を解決すると共に、圧
板の動作と遮光蓋の動作との間に適正動作関係を
持たせたフイルムバツクを提供することである。 SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned drawbacks and to provide a film back in which an appropriate operational relationship is established between the operation of the pressure plate and the operation of the light-shielding lid.
以下、図面に沿つて本考案の一実施例を説明す
る。 An embodiment of the present invention will be described below with reference to the drawings.
第１図の概略的な部分断面図は、カメラボデイ
３０、レンズ３１、グリツプ３２等を持つカメラ
に本考案の一実施例が装着された状態を示す。本
実施例において、フイルムバツク本体１内で、フ
イルムＦが圧板２に装備された支持レール２ａ，
２ｂに挿入されて圧板２と一体に支持されてい
る。 The schematic partial sectional view of FIG. 1 shows an embodiment of the present invention mounted on a camera having a camera body 30, a lens 31, a grip 32, etc. In this embodiment, within the film bag body 1, a support rail 2a, on which the film F is mounted on the pressure plate 2,
2b and is integrally supported with the pressure plate 2.
圧板２を出入れする機構のみが示された本実施
例の斜視図である第２図に示す如く、圧板２は弾
性部材を介して圧板基板３上に取付けられ、圧板
基板３は圧板支持基板４に対して相対的に傾動可
能な状態で取付軸５により該支持基板４上に取付
けられている。 As shown in FIG. 2, which is a perspective view of this embodiment in which only the mechanism for taking in and out the pressure plate 2 is shown, the pressure plate 2 is mounted on a pressure plate substrate 3 via an elastic member, and the pressure plate substrate 3 is attached to a pressure plate support substrate. It is mounted on the support substrate 4 by a mounting shaft 5 so as to be tiltable relative to the support substrate 4.
支持基板４はフイルムバツク本体１に固定され
た回動軸６の回りで回動可能であると共にバネ７
によつて反時計方向に付勢され、それによつて支
持基板４のレバー部４ａが常に作動カム８のカム
面に接触するようになつている。作動カム８は操
作ノブ９を外から操作して動かされるもので、こ
の操作の可能性は遮光蓋１０の状態により左右さ
れる。 The support substrate 4 is rotatable around a rotation shaft 6 fixed to the film bag body 1, and is supported by a spring 7.
As a result, the lever portion 4a of the support substrate 4 is always in contact with the cam surface of the actuating cam 8. The operating cam 8 is moved by operating an operating knob 9 from the outside, and the possibility of this operation depends on the state of the light-shielding lid 10.
ここで第３図により、第２図で省略されている
本実施例の部分の構成について述べる。 Here, with reference to FIG. 3, the configuration of the portion of this embodiment that is omitted in FIG. 2 will be described.
回転体９ａは操作ノブ９と一体に回転するもの
で、この回転体９ａに固定された操作ノブカツプ
リング１１と作動カム８に固定された作動カムカ
ツプリング１２とが噛合つていることにより作動
カム８は操作ノブ９と共に回動する。こうしてカ
ム面とレバー部４ａ間のカム作用により圧板２の
出入れが行われる。尚、図面では図示の都合上、
両カツプリング１１，１２は切離して示してあ
る。 The rotating body 9a rotates together with the operating knob 9, and the operating knob coupling 11 fixed to the rotating body 9a and the operating cam coupling 12 fixed to the operating cam 8 are engaged with each other, so that the operating cam is rotated. 8 rotates together with the operating knob 9. In this way, the pressure plate 2 is moved in and out by the cam action between the cam surface and the lever portion 4a. In addition, in the drawing, for convenience of illustration,
Both coupling rings 11, 12 are shown separated.
回転体９ａには係合部材、すなわち制御ピン１
３が植設されており、そして制御部材、すなわち
第１の制御レバー１４、制限レバー１５、第２の
制御レバー１６が夫々の回転軸１７，１８，１９
上に回動可能に設けられている。制限レバー１５
と第２の制御レバー１６は夫々バネ２０，２１に
より時計方向に付勢されている。こうして遮光蓋
１０の状態に応じて制限レバー１５が動かされ、
さらに第１、第２の制御レバー１４，１６及び制
御ピン１３を介して操作ノブ９の動きが規制され
る。 The rotating body 9a has an engaging member, that is, a control pin 1.
3 is implanted, and the control members, namely the first control lever 14, the limit lever 15 and the second control lever 16, are connected to the respective rotation axes 17, 18, 19.
It is rotatably mounted on the top. Limit lever 15
and second control lever 16 are biased clockwise by springs 20 and 21, respectively. In this way, the restriction lever 15 is moved according to the state of the light-shielding lid 10,
Furthermore, the movement of the operating knob 9 is regulated via the first and second control levers 14 and 16 and the control pin 13.
この様に構成された本実施例の動作を説明す
る。 The operation of this embodiment configured in this manner will be explained.
遮光蓋１０が挿入されたままの第３図の状態に
おいて、圧板支持基板４すなわち圧板２を前方に
押し出しフイルムＦをカメラのアパーチユアＡと
対向させようとして（第１図参照）、操作ノブ９
を時計方向に回すと回転体９ａも一体に回転す
る。しかし、制限レバー１５の一端１５ａが遮光
蓋１０の一端１０ａと係合して該レバー１５の時
計方向の回転退避が出来ない為、第２の制御レバ
ー１６も、これの突部がバネ２１の付勢力により
制限レバー１５の端面に当接させられた図示の状
態を保つ。従つて、制御ピン１３の時計方向移動
が第２の制御レバー１６の先端部によつて制御さ
れ、操作ノブ９の時計方向回転は一定量回転した
所で停止せられる。この時、圧板支持基板４のレ
バー部４ａは作動カム８の半径一定の範囲部分８
ａに接しており、圧板２は前進することがない。 In the state shown in FIG. 3 with the light-shielding lid 10 still inserted, in an attempt to push the pressure plate support substrate 4, that is, the pressure plate 2 forward and make the film F face the camera aperture A (see FIG. 1), the operation knob 9 is pressed.
When the rotating body 9a is rotated clockwise, the rotating body 9a also rotates together. However, since the one end 15a of the limit lever 15 engages with the one end 10a of the light-shielding lid 10 and the lever 15 cannot be rotated and retreated in the clockwise direction, the protrusion of the second control lever 16 is also connected to the spring 21. The biasing force keeps the limit lever 15 in the illustrated state in contact with the end surface thereof. Therefore, the clockwise movement of the control pin 13 is controlled by the tip of the second control lever 16, and the clockwise rotation of the operating knob 9 is stopped after a certain amount of rotation. At this time, the lever portion 4a of the pressure plate support substrate 4
a, and the pressure plate 2 does not move forward.
次に、遮光蓋１０が途中まで引き下げられた状
態である第４図の場合を説明する。この時には、
制限レバー１５の他端１５ｂが遮光蓋１０の端面
１０ｂに係合してその動きが制限される為、第３
図の状態と同様制限レバー１５の時計方向回転が
阻止される。従つて、第３図と同様に操作ノブの
時計方向回転が一定量の範囲に制限され、圧板２
は前進できえない。 Next, the case shown in FIG. 4, in which the light-shielding lid 10 is partially pulled down, will be described. At this time,
Since the other end 15b of the restriction lever 15 engages with the end surface 10b of the light-shielding lid 10 and its movement is restricted, the third
As in the state shown in the figure, the limit lever 15 is prevented from rotating clockwise. Therefore, as in FIG. 3, the clockwise rotation of the operating knob is limited to a certain range, and the pressure plate 2
cannot move forward.
尚、第３図から第４図の状態への移行の際、制
限レバー１５の時計方向回転阻止は、一端１５ａ
と一端１０ａの当接から他端１５ｂと端面１０ｂ
の当接へと受け継がれて行われる。 Incidentally, when transitioning from the state shown in FIG. 3 to the state shown in FIG.
From the contact between one end 10a and the other end 15b and end surface 10b
This is carried over to the contact of the
第５図は遮光蓋１０が完全に引き下げられた状
態を示す。この状態では、制限レバー１５の他端
１５ｂが遮光蓋１０の溝１０ｃ内に入り込むこと
ができる。よつて、制限レバー１５がバネ２０に
よつて時計方向に回転させられ図示の状態になる
と共に、第２の制御レバー１６も追従してバネ２
１の付勢力で時計方向に回転し、該レバー１６の
先端部が回転体９ａの制御ピン１３の時計方向移
動を妨げない範囲へと退避する。故に、操作ノブ
９の操作により、圧板支持基板４のレバー部４ａ
が作動カム８の半径一定の部分８ａ、半径が小さ
くなつた窪み部８ｂのいずれをも選択して接触す
ることが可能となる。レバー部４ａが部分８ａに
接触するように操作ノブ９を操作すれば、圧板２
は遮光蓋１０の軌道外へ退いた退避位置をとり
（第２図参照）、この状態で遮光蓋１０を押上げれ
ばフイルムバツクは光密状態となる。一方、操作
ノブ９を時計方向に回転すると、バネ７によつて
反時計方向に付勢された圧板支持基板４のレバー
部４ａが作動カム８のカム面に沿つて窪み部８ｂ
に落ち込み、該基板４が軸６の回りで反時計方向
に回転して圧板２を押し出す。こうして第１図の
如く、フイルムＦがカメラのアパーチユアＡと対
向せられる。 FIG. 5 shows a state in which the light-shielding lid 10 is completely pulled down. In this state, the other end 15b of the restriction lever 15 can enter into the groove 10c of the light-shielding lid 10. Therefore, the limit lever 15 is rotated clockwise by the spring 20 to the state shown in the figure, and the second control lever 16 also follows and rotates the spring 20.
The lever 16 rotates clockwise with a biasing force of 1, and the tip of the lever 16 retreats to a range where it does not interfere with the clockwise movement of the control pin 13 of the rotating body 9a. Therefore, by operating the operation knob 9, the lever portion 4a of the pressure plate support substrate 4 is
It becomes possible to select and contact either the constant radius portion 8a of the actuating cam 8 or the concave portion 8b with a reduced radius. If the operating knob 9 is operated so that the lever portion 4a comes into contact with the portion 8a, the pressure plate 2
takes a retracted position out of the orbit of the light-shielding lid 10 (see FIG. 2), and if the light-shielding lid 10 is pushed up in this state, the film bag becomes light-tight. On the other hand, when the operating knob 9 is rotated clockwise, the lever portion 4a of the pressure plate support substrate 4, which is biased counterclockwise by the spring 7, moves along the cam surface of the operating cam 8 into the recessed portion 8b.
The substrate 4 rotates counterclockwise around the shaft 6 and pushes out the pressure plate 2. In this way, as shown in FIG. 1, the film F is opposed to the aperture A of the camera.
また、逆に、圧板２が前へ出た第５図の状態で
遮光蓋１０を挿入しようとしても、該蓋１０の溝
１０ｃに制限レバー１５の他端１５ｂが入つてい
るのでこの挿入は阻止される。この場合、同時に
遮光蓋１０はこれ以上引き下げられないので、他
端１５ｂと溝１０ｃは該蓋１０がフイルムバツク
から完全に抜けるのを阻止するロツク手段をも構
成する。 Conversely, even if an attempt is made to insert the light-shielding lid 10 in the state shown in FIG. be done. In this case, since the light shielding lid 10 cannot be pulled down any further at the same time, the other end 15b and the groove 10c also constitute a locking means for preventing the lid 10 from being completely removed from the film bag.
遮光蓋１０を挿入したければ、操作ノブ９を反
時計方向に回し、制御ピン１３が第１の制御レバ
ー１４の一端１４ａを押して該レバー１４の時計
方向回転により制限レバー１５を反時計方向に回
転させてやればよい。これにより制限レバー１５
の他端１５ｂが遮光蓋１０の溝１０ｃより退避
し、遮光蓋１０の挿入が可能となる。 If you want to insert the light-shielding lid 10, turn the operating knob 9 counterclockwise, the control pin 13 pushes one end 14a of the first control lever 14, and the clockwise rotation of the lever 14 causes the restriction lever 15 to move counterclockwise. Just rotate it. As a result, the limit lever 15
The other end 15b is retracted from the groove 10c of the light-shielding lid 10, and the light-shielding lid 10 can be inserted.
上記第１実施例においては、連動部材は、回転
体９ａ、操作ノブカツプリング１１、作動カムカ
ツプリング１２、作動カム８、部分８ａ、窪み部
８ｂ、レバー部４ａ、圧板基板４、圧板支持基板
３およびバネ７により構成されている。また、制
御機構は、制限レバー１５、第２の制御レバー１
６、バネ２０および２１により構成されている。 In the first embodiment, the interlocking members include the rotating body 9a, the operating knob coupling 11, the operating cam coupling 12, the operating cam 8, the portion 8a, the recessed portion 8b, the lever portion 4a, the pressure plate substrate 4, and the pressure plate support substrate. 3 and a spring 7. Further, the control mechanism includes a limit lever 15 and a second control lever 1.
6. Consists of springs 20 and 21.
ところで、制御レバーは、遮光蓋１０が第３図
及び第４図のいずれの状態にあるときでも端面８
ｂのみと当接する部分を持つようにしてもよい。
この例が第６図に示され、制御レバー２３は片２
３ａを持つ。 By the way, the control lever does not touch the end surface 8 when the light-shielding lid 10 is in either of the states shown in FIG. 3 or FIG.
It is also possible to have a portion that contacts only b.
An example of this is shown in FIG.
Has 3a.
尚、第６図に示す第２実施例においては、連動
機構は第１実施例の場合と同じ部材で構成されて
いるが、制御機構は、制限レバー２３、第２の制
御レバー１６、バネ２０およびバネ２１により構
成されている。 In the second embodiment shown in FIG. 6, the interlocking mechanism is composed of the same members as in the first embodiment, but the control mechanism includes a limit lever 23, a second control lever 16, and a spring 20. and a spring 21.
尚、操作ノブ９の回動運動両端における回転止
めは図示せぬ方法、例えばクリツク等により行わ
れ、それによつて各レバー類に加わつているバネ
付勢力に抗して各々の状態が保たれるものであ
る。 Note that rotation of the operating knob 9 at both ends of its rotational movement is stopped by a method not shown, such as a click, thereby maintaining each lever in its respective state against the spring biasing force applied to each lever. It is something.
以上詳述した如く本考案によれば、遮光蓋を開
口部から退避させる時も、該遮光蓋で開口部を覆
う時も圧板は常に開口部から退避しており、また
圧板を開口部に向けて突出させる時も、開口部か
ら退避させる時も遮光蓋は常に開口部から退避し
ている。したがつて遮光蓋と圧板とが同時に開口
部に位置づけられることはない。その結果、両者
が接触して何れかが損傷を受けるということはな
い。勿論上記何れの場合にも両者は接触しないの
で、一方が他方の円滑な動作を妨げることもな
い。 As detailed above, according to the present invention, the pressure plate is always retracted from the opening both when the light-shielding lid is retracted from the opening and when the light-shielding lid covers the opening, and the pressure plate is directed toward the opening. The light-shielding lid is always retracted from the opening both when it is projected and when it is retracted from the opening. Therefore, the light-shielding lid and the pressure plate are never positioned in the opening at the same time. As a result, there is no possibility that either one will be damaged due to contact between the two. Of course, in any of the above cases, since the two do not come into contact with each other, one does not interfere with the smooth operation of the other.
第１図はカメラに本考案の一実施例が装着され
た状態を示す概略的な部分断面図、第２図は圧板
を出入れする機構のみを示した第１図の実施例の
斜視図、第３図乃至第５図は第１図の実施例の動
作を説明する図、第６図は第１図の実施例の変形
例を示す第３図と同様な図である。
主要部分の符号の説明、遮光蓋……１０、操作
部材……８，９、圧板……２、規制部材……１
５，１６，１７。
FIG. 1 is a schematic partial cross-sectional view showing an embodiment of the present invention attached to a camera; FIG. 2 is a perspective view of the embodiment of FIG. 1 showing only the mechanism for moving the pressure plate in and out; 3 to 5 are diagrams for explaining the operation of the embodiment of FIG. 1, and FIG. 6 is a diagram similar to FIG. 3 showing a modification of the embodiment of FIG. 1. Explanation of symbols of main parts, light-shielding lid...10, operating members...8, 9, pressure plate...2, regulating member...1
5, 16, 17.
Claims (1)
開口部から退避した退避位置とに移動可能な遮光
蓋と； 前記開口部を介してカメラのアパーチヤに近接
し前記遮光蓋の摺動軌道内に位置する突出位置
と、フイルムバツク内に埋没し前記遮光蓋の摺動
軌道から所定距離だけ退避した埋没位置とに移動
可能なフイルム支持用の圧板と； 正方向及び逆方向に回転操作可能な手動操作ノ
ブと； 前記操作ノブに連動すると共に、該操作ノブの
正方向の回転により前記圧板を埋没位置から突出
位置へ移動させる一方、該操作ノブの逆方向の回
転により前記圧板を突出位置から埋没位置へ移動
させる連動機構と； 退避位置にある前記遮光蓋の移動軌跡内にあつ
て該遮光蓋の退避位置から遮蔽位置への移動を阻
止し且つ前記操作ノブの正方向回転を許容する第
１の位置と、前記遮光蓋の移動軌跡から退避して
該遮光蓋の退避位置と遮蔽位置との間の移動を許
容し且つ前記操作ノブの正方向回転を阻止する第
２の位置とに移動可能な制御機構と； 前記制御機構に係合され、前記遮光蓋が退避位
置にあるときは前記操作ノブの逆方向回転により
前記制御機構を第１の位置から第２の位置へ移動
せしめるように変位する制御部材と； 前記連動機構に設けられ、前記操作ノブの移動
に応じて前記制御部材と係合自在であり該制御部
材を変位させると共に前記制御機構が第２の位置
にあるとき該制御機構に係合して前記操作ノブの
正方向回転を阻止する係合部材と； を設けることにより、前記圧板と、前記遮光蓋と
が前記開口部に同時に移動することを防止したこ
とを特徴とするフイルムバツク。[Scope of Claim for Utility Model Registration] A film bag that is detachably attached to a camera, comprising: a light-shielding lid that is movable between a shielding position that covers an opening of the film bag and a retracted position that is retracted from the opening; a film support that is movable between a protruding position that is close to the aperture of the camera and located within the sliding track of the light-shielding lid, and a buried position that is buried within the film bag and retreated a predetermined distance from the sliding track of the light-shielding lid. a pressure plate; a manual operation knob that can be rotated in forward and reverse directions; a manual operation knob that is interlocked with the operation knob and moves the pressure plate from the buried position to the protrusion position by rotation of the operation knob in the forward direction; an interlocking mechanism for moving the pressure plate from the protruding position to the buried position by rotating the operation knob in the opposite direction; moving the light shielding lid from the retracted position to the shielding position within the movement locus of the light shielding lid in the retracted position; a first position where the operation knob is prevented from rotating in the forward direction, and a first position where the operation knob is retracted from the movement locus of the light-shielding lid to allow movement of the light-shielding lid between the retracted position and the shielding position; a control mechanism movable to a second position that prevents forward rotation of the knob; when engaged with the control mechanism and the light-shielding lid is in the retracted position, the control mechanism is moved by reverse rotation of the operating knob; a control member that is displaceable so as to move the control knob from a first position to a second position; and a control member that is provided in the interlocking mechanism and that is freely engageable with the control member in response to movement of the operation knob and that displaces the control member. and an engagement member that engages with the control mechanism to prevent the operating knob from rotating in the forward direction when the control mechanism is in the second position; A film bag characterized in that it is prevented from simultaneously moving into the opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980012440U JPH0123133Y2 (en) | 1980-02-05 | 1980-02-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980012440U JPH0123133Y2 (en) | 1980-02-05 | 1980-02-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56115144U JPS56115144U (en) | 1981-09-04 |
| JPH0123133Y2 true JPH0123133Y2 (en) | 1989-07-17 |
Family
ID=29609015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1980012440U Expired JPH0123133Y2 (en) | 1980-02-05 | 1980-02-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0123133Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS448855Y1 (en) * | 1966-06-10 | 1969-04-10 |
-
1980
- 1980-02-05 JP JP1980012440U patent/JPH0123133Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS448855Y1 (en) * | 1966-06-10 | 1969-04-10 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56115144U (en) | 1981-09-04 |
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