JPS6035719A - Indexing device of camera - Google Patents

Abstract

PURPOSE:To provide an indexing device which is simple in construction capable of taking free disposition by being driven by a rotating member which rotates during film winding and is different in the angle of rotation with respect to the initial frame and the angle of rotation with respect to the final frame. CONSTITUTION:The diameter of a reel shaft 1 increases as the thickness of a film increases on progressing of film winding. Therefore, the amount of rotation of the shaft 1 for each one frame of image planes decreases gradually and eventually the rotating angle of an index plate 7 for each one frame of the image planes decreases gradually. The scale 7a for the number of frames at the plate 7 is set at angles of unequal intervals corresponding approximately to the amt. of rotation of the shaft 1 from the space angle alpha at the initial period up to the space angle beta at the end period. The construction is made extremely simple and free disposition is taken by such constitution.

Description

【発明の詳細な説明】 産業上の利用分野 本発明はロールフィルム使用のカメラにおける指数器の
措造に関するもので夛）ろ。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to the construction of an indexer in a camera using roll film.

従来技術 一般にロールフィルムを使用するカメラにおいては、フ
ィルムを巻上げる部材に従動することによって指数器を
回転し、撮影されたフィルムの駒数の表示が行われでい
ろ。BACKGROUND OF THE INVENTION In general, in cameras using roll film, an index indicator is rotated by being driven by a member that winds the film, and the number of frames of the film that has been shot is displayed.

従来前記部材としては、１駒分のフィルムを巻上げるに
当り常に一定量の回転を行うスプロケット歯車の如き回
転部材かあるいは、口じぐ一定量の往復作動を行う巻上
レバーの如き在世部材が用いられていた。Conventionally, the above-mentioned member has been a rotating member such as a sprocket gear that always rotates a certain amount when winding one frame of film, or a conventional member such as a winding lever that performs a certain amount of reciprocating motion when swiping the film. It was used.

それｂτよって指数器はフィルム１駒当り常に定量の回
転が１工されるので、等間隔の駒数目盛を備えることが
可能となっていた。Because of this bτ, the indexer always makes one fixed rotation per frame of film, so it was possible to have a frame number scale at equal intervals.

しかしながら、指数器はスペースの都合や児易い位置で
もあることからカメラの周縁部に配置されろことが多い
ので、複雑な巻上機措のほぼ中央に位置−を乙スプロケ
ット歯車に従動させるためには、せまい空間に多くの部
品を組込まねばならないことになる。However, the indexer is often placed at the periphery of the camera due to space constraints and an easy-to-understand location. This means that many parts must be assembled in a small space.

また、巻上レバーの往復作動に従動させるにも爪と型車
等による間欠運動装置を設けねばならず、スペースとコ
ストの面で不利となるのを免れない。Further, in order to follow the reciprocating operation of the hoisting lever, it is necessary to provide an intermittent motion device using a pawl, a die wheel, etc., which inevitably results in disadvantages in terms of space and cost.

このように一定量の回転あるいは往復作動を行う部材に
よって指数器を作動する従来の手段は、構造が複雑化す
ると共にスペースやコス）　１７）面テもマイナス面を
伴い、またそれらの部材のレイアウトすなわちカメラ設
計の自由度にも大きな制約を与えている。Conventional means of operating an indexer using members that perform a certain amount of rotation or reciprocating operation require a complicated structure, space and cost (17) There is also a disadvantage in terms of surface efficiency, and the layout of those members In other words, the degree of freedom in camera design is also severely restricted.

発明の目的 本発明は、指数器の作動を、フィルム巻上時に回転量の
変化する部材より得ることによって、構造が簡潔で自由
な配置のとれるカメラの指数器を提供せんとするもので
ある。OBJECTS OF THE INVENTION The present invention provides an indexer for a camera which has a simple structure and can be arranged freely by obtaining the operation of the indexer from a member whose rotation amount changes during film winding.

発明の構成 本発明ハ、フィルム巻上時に回転」の’Ｒ化ｉ　る部材
に、不等間隔あるいはそれを案分して平均した等間隔目
盛を有−［る指数器を接続して構成するもので、それは
、フィルム巻上時に回転し、初期の駒に対する回転角度
と終期の駒に対する回転角度とが異る回転部材番てよっ
て駆動されろことを特徴とするカメラの指数器によって
達成される。Structure of the Invention The present invention is constructed by connecting an index scale having irregularly spaced scales or equally spaced scales obtained by dividing and averaging the scales to a member that rotates during film winding. This is achieved by a camera indexer which rotates when the film is wound and is driven by a rotary member whose angle of rotation for the initial frame is different from that for the final frame. .

実施例 本発明によるｌ実施例を第１図に示す。Example An embodiment according to the invention is shown in FIG.

図において、ｌはカメラ内シでおいて撮影済のフィルム
を巻取るべく図示しないＩａ車系列によって反時計方向
に駆動される回転部材すなわちリール軸である。本発明
においては、前記リール軸がパトローネ（図示せず）よ
り引出されて露光を受けたフィルン・２を各画面ごとｌ
駒宛間欠的に巻取ろと共に該リール軸１と一体の歯車３
が指数器の送り歯車４とそれシて回軸一体の切欠軸５を
時計方向に回転する作用をしている。In the figure, l is a rotating member, ie, a reel shaft, which is driven counterclockwise by a series of Ia wheels (not shown) in order to wind up the photographed film inside the camera. In the present invention, the reel shaft is pulled out from a cartridge (not shown) and exposes the film 2 for each screen.
A gear 3 integrated with the reel shaft 1 along with an intermittent winding mechanism for the pieces.
has the effect of rotating the feed gear 4 of the indexer and the notched shaft 5, which is integrated with the rotary shaft, in the clockwise direction.

前記切欠軸５が時計方向に数回転することによって、該
切欠軸５に設けた切欠部５ａは、指数盤７を一体に備え
た三角形のｇｔｔ形をした爪歯車６を、軸６ａを中心と
１〜で反時計方向に回転し、前記指数盤７の次なる駒数
目盛７ａをカメラに固定して設けた指標８の位置に送っ
て撮影済フィルムの表示を行うようになっている。When the notched shaft 5 rotates several times in the clockwise direction, the notched portion 5a provided in the notched shaft 5 allows the triangular GTT-shaped pawl gear 6 integrally equipped with the index board 7 to be rotated around the shaft 6a. 1~, the index board 7 is rotated counterclockwise, and the next frame number scale 7a of the index board 7 is sent to the position of an index 8 fixed to the camera, thereby displaying the film that has been photographed.

この場合、前記リール軸ｌは、フィルムの巻取が進むに
つれてフィルムの厚さが積層して軸径が増大する。した
がって該リール軸ｌの画面１駒当りの回転量は漸減し、
結果的に前記指数盤７の画面ｌ駒当りの回転角も漸減し
て行くこととなる。In this case, as the winding of the film progresses, the thickness of the film increases and the shaft diameter of the reel shaft l increases. Therefore, the amount of rotation of the reel axis l per screen frame gradually decreases,
As a result, the rotation angle per frame of the index board 7 gradually decreases.

従って本発明においては、前記指数ｍ７における駒数目
盛７ａは、その初期における間隔角度αカラ終期におけ
る間隔角度βにわたってそれぞれ前記リール軸１の回転
ｉ−に近似的に対応した不等間隔の角度に設定されるこ
ととなる。Therefore, in the present invention, the piece number scale 7a in the index m7 is set at irregularly spaced angles that approximately correspond to the rotation i- of the reel shaft 1 over the interval angle α at the initial stage and the interval angle β at the final stage. It will be set.

このようＶＣ措成することにより本発明によるカメラの
指数器は、前記回転部材ｌ以外の定量回転部材例えばス
プロケット歯車等によって駆動されろ従来形式の指数器
に比し、その構造が極めて簡潔でかつ必要とするスペー
スも小さく、製作上また設計上類る有用となる。Due to this VC arrangement, the camera indexer according to the present invention has an extremely simple structure and is driven by a quantitative rotating member other than the rotating member 1, such as a sprocket gear. It also requires less space and is equally useful in terms of manufacturing and design.

また、前記駒数目盛７１１を、前記の初期における間隔
角度αと前記の終期におけろ間隔角度βを案分した平均
の角度をもって等間隔に設定しても、撮影済フィルムの
枚数を近似的に知ることは可能である。特にリール軸ｌ
の軸径が大きい場合には、」二記の平均の角度をもって
しても、その駒数目盛７ａと指係８との合致に対する丼
異は許容さｉｌ、る前回となる。Furthermore, even if the frame number scale 711 is set at equal intervals with an average angle obtained by dividing the interval angle α at the initial stage and the interval angle β at the final stage, the number of frames of film that has been shot can be approximated. It is possible to know. Especially the reel axis
If the diameter of the shaft is large, even with the average angle shown in the above, the difference between the number scale 7a and the finger rest 8 cannot be tolerated.

なお前記切欠軸５と爪歯車＋３　Ｋ　Ｊ、る減速装鶴゛
の替りに、減速歯車装置を使用ｌ〜て駒数目盛７ａを駆
動すれば、枚数表示の粘度はより向上する。Incidentally, if a reduction gear device is used instead of the reduction gear device consisting of the notch shaft 5 and the pawl gear +3KJ to drive the frame number scale 7a, the viscosity of the number display will be further improved.

また本実施例では、リール軸ｌと爪歯車６の軸６ａとは
中心を別に設けであるが、之等を同軸としてリール軸Ｉ
Ｋ一体となった爪歯車６と指数盤７とを設けろことも勿
論可能である。Further, in this embodiment, the reel shaft I and the shaft 6a of the pawl gear 6 are provided with different centers, but the reel shaft I and the like are coaxial.
Of course, it is also possible to provide the claw gear 6 and index board 7 that are integrated.

第２図は本発明の他の実施例を示す。FIG. 2 shows another embodiment of the invention.

図はフィルムが巻上状態にあるときの各歯車の配置を示
したもので、時計方向に回転するモータ軸（図示せず）
に取付けられた歯車１１は、フィルム給送用の歯車１２
乃至歯車１８を介して歯車１９を反時言１方向に回転し
、該歯車１９と一体で同軸に取付けられた巻取リール２
６によってパトローネ２７より引出されたフィルム列を
巻取り−ル２６上に巻取る。The figure shows the arrangement of each gear when the film is in the winding state.The motor shaft (not shown) rotates clockwise.
A gear 11 attached to the gear 12 is a gear 12 for feeding the film.
A take-up reel 2 that rotates a gear 19 in one direction counterclockwise through the gear 18 and is integrally and coaxially attached to the gear 19.
6, the film row pulled out from the cartridge 27 is wound onto the winding wheel 26.

ここで歯車１．２．３は順次噛合し、歯車１３と１４は
同軸一体とされている。また歯車１６は、歯車１４と噛
合う歯車１５０回転中心１５　ａを支点とし、遊星歯車
として回動可能の切換板２つ上ＫＥ＋ろ。フィルムの巻
上状態にあっては、歯車１５は反時Ｂ１”方向に回転し
、切換板２９は反時計方向に揺動して、歯＃１５の反時
１計方向の回転は歯車１Ｇを介して歯車７に伝達されろ
。Here, the gears 1, 2, and 3 mesh one after another, and the gears 13 and 14 are coaxially integrated. Further, the gear 16 is rotatable as a planetary gear, with the rotation center 15a of the gear 150 that meshes with the gear 14 as a fulcrum, and is rotatable as a planetary gear. In the film winding state, the gear 15 rotates in the counterclockwise B1'' direction, the switching plate 29 swings counterclockwise, and the rotation of the tooth #15 in the counterclockwise direction causes the gear 1G to rotate. be transmitted to gear 7 via

スプロケット３０はｎｌＱ車１７の軸にフリーに嵌合し
ており、フィルム３８によって回転されろ。そして、巻
上げられるフィルムの長さを１駒分宛検出して、スイッ
チ（図示せず）を作動させて前記モータを停止させろ機
能に接続している。The sprocket 30 is freely fitted onto the shaft of the nlQ wheel 17 and is rotated by the film 38. The length of the film to be wound by one frame is detected and a switch (not shown) is actuated to stop the motor.

一方、前記歯車１５は歯車側をも時計方向に回転させる
ので、該歯車田土に設けた爪部材３１は、歯車印と同軸
ながら自由に回動可能の指数器送り用の歯車２１に一体
に取付ら１またカム部材３２の立上り部３２　ａと係合
し、前記歯車２１をも時ａ１方向に回転させている。On the other hand, since the gear 15 also rotates the gear side clockwise, the claw member 31 provided on the gear base is integrally attached to the index dial feeding gear 21 which is coaxial with the gear mark and can freely rotate. 1 also engages with the rising portion 32a of the cam member 32, causing the gear 21 to also rotate in the direction a1.

従って前記歯車２１と噛合う歯車２２は反時計方向に回
転し、該歯車２２と同軸一体の切欠軸３４は之に爪歯車
３５の歯３５　ａを時泪方向ｊて送る作用をしてし）ろ
。その結果、前記爪歯車３５と同軸一体に設けられた指
ｉ盤３６も時１１方向に回り、送られたフィルム枚数を
示す数字２６　ａが指標２７１でよって表示さオｔろこ
ととなる。Therefore, the gear 22 that meshes with the gear 21 rotates counterclockwise, and the notched shaft 34 coaxially integrated with the gear 22 acts to feed the teeth 35a of the pawl gear 35 in the clockwise direction. reactor. As a result, the finger board 36 coaxially provided with the pawl gear 35 also rotates in the 11 o'clock direction, and the number 26a indicating the number of sheets of film fed is displayed on the index 271.

２・ｊｔｈ：ｐ 次に巻戻しを行なう際は前記モータを逆転すなわち前記
歯車２１を反時計方向の回転に切換先る。2.jth:p When rewinding is to be performed next time, the motor is reversely rotated, that is, the gear 21 is switched to rotate counterclockwise.

之によって歯車１５は時計方向に回転し、この動作に関
連して摩擦効果により前記切換板２９も同時に時計方向
に揺動されるので、前記歯車１６は歯車羽と噛合い、歯
車スを介して歯車５が時計方向に回転し、該歯車６とク
ラ、チ結合（図示せず）されたパトローネ１７の軸はフ
ィルム四を巻戻し該パトローネｎに収納する作用をする
。As a result, the gear 15 rotates clockwise, and in connection with this movement, the switching plate 29 is simultaneously swung clockwise due to the friction effect, so that the gear 16 meshes with the gear blades and is rotated through the gear blades. The gear 5 rotates clockwise, and the shaft of the cartridge 17, which is connected to the gear 6 by a clutch (not shown), functions to rewind the film 4 and store it in the cartridge n.

この場合、前記歯車側は反時計方向の回転となるので前
記爪部材３１は、前記カム部材３２の立上り部３２ａと
係合せず押えバネ３１ａに抗して自転するだけであるの
で、歯車２１は回転しない。従って前記指数盤３６は順
転・逆転の倒れの方向にも回転を起さない。In this case, since the gear side rotates counterclockwise, the pawl member 31 does not engage with the rising portion 32a of the cam member 32 and only rotates against the presser spring 31a, so the gear 21 rotates counterclockwise. It doesn't rotate. Therefore, the index board 36 does not rotate in either forward or reverse directions.

また、前記歯車２１が摩擦その他の要因によって移動す
るのを防ぐため、該歯車２１に対して逆転防止爪３３お
よびその付勢のための引張バネ３３ａから成る逆転防止
装置が設けられていて、その作用はより確実となるもの
である。なお、逆転防止装置は一方向りラ、チと指数器
の間に設けてもよい。Further, in order to prevent the gear 21 from moving due to friction or other factors, a reverse rotation prevention device consisting of a reverse rotation prevention pawl 33 and a tension spring 33a for biasing the rotation prevention claw 33 is provided on the gear 21. The effect is more reliable. It should be noted that the reversal prevention device may be provided between the one-way lever and the indexer.

なお、前記指数Ｂ、３６は公知の方法によって従来のカ
メラにおける指数盤の如く、裏蓋の開放によって始点の
位置に復帰させることが可能である。Incidentally, the index B, 36 can be returned to its starting position by opening the back cover, like an index board in a conventional camera, by a known method.

発明の効果 本発明により、フィルムを巻上げるに従って回転角度の
変化する回転部材からの指数器の駆動が可能となり、そ
の結果、簡単かつ小型で、配置に自由度の高いカメラの
指数器が提供されることとなった。Effects of the Invention According to the present invention, it is possible to drive an indexer from a rotating member whose rotation angle changes as the film is wound, and as a result, a camera indexer that is simple, compact, and has a high degree of freedom in arrangement is provided. It happened.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明によるカメラの指数器を示す平面概要図
。第２図は本発明の他の実施例を示す図。 ｌ・・・リール軸　２・・・フィルム ３・・・歯車　４・・・送り歯車 ５・・・切欠軸　５ａ・・・・・・切欠部６・・・爪歯
車　６ａ・・・・・・軸 ７・・・指数盤　７ａ・・・・・・駒数目盛８・・・指
標　１１〜２５・・・歯車 ２６・・・巻取リール　２７・・・ハトローネ路・・・
フイルノ・２９・・・切換板 ３０・・・スプロケット歯車　３１・・・爪部材３２・
・・カム部材　３３・・・逆転防止爪３４・・・切欠軸
　３５・・・爪歯車 ３６・・・指数盤 代理人　桑原義美FIG. 1 is a schematic plan view showing an indexer of a camera according to the present invention. FIG. 2 is a diagram showing another embodiment of the present invention. l...Reel shaft 2...Film 3...Gear 4...Feed gear 5...Notch shaft 5a...Notch 6...Claw gear 6a... Axis 7... Index board 7a... Piece number scale 8... Index 11-25... Gear 26... Take-up reel 27... Hatron road...
Filler no. 29...Switching plate 30...Sprocket gear 31...Claw member 32.
...Cam member 33...Reverse prevention pawl 34...Notch shaft 35...Claw gear 36...Indicator board agent Yoshimi Kuwahara

Claims (1)

【特許請求の範囲】 ｆｌ）　フィルム巻上時に回転し、初期の駒に対する回
転角度と終期の駒に対する回転角度とが異る回転部材に
よって駆動されることを特徴とするカメラの指数器。 （２）前記指数器が前記各回転角度に対応した不等間隔
の駒数目盛を備えることを特徴とする特許請求の範囲ｔ
Ｘ１項記載のカメラの指数器。 （３）前記指数器が前記各回転角度を案分した等間隔の
駒数目盛を備えることを特徴とする特許請求の範囲第１
項記載のカメラの指数器。 （４）前記回転部材がカメラにおけるフィルム巻取軸で
あるこｋを特徴とする特許請求の範囲第１項乃至第３項
記載のカメラの指数器。[Claims] fl) An exponent for a camera, which is driven by a rotating member that rotates when the film is wound and has a rotation angle for an initial frame and a rotation angle for a final frame that are different. (2) Claim t characterized in that the exponent is provided with a scale of the number of pieces at irregular intervals corresponding to each of the rotation angles.
An exponent for the camera described in item X1. (3) Claim 1, wherein the exponent is provided with a scale of the number of pieces at equal intervals, dividing each rotation angle proportionally.
Camera exponent as described in section. (4) An indexer for a camera according to any one of claims 1 to 3, wherein the rotating member is a film winding shaft of the camera.