JP3576296B2 - Gear coupling device - Google Patents

Description

表１において、ゆるみＡは、第１ギヤアーム３２がセット／巻き戻し側にいるときに、セットアップ／ダウン可能なギヤ位置（図５（Ａ））からズームアップ／ダウン可能なギヤ位置（図６（Ａ））へ切り換える場合、または、セットアップ／ダウン可能なギヤ位置から巻き戻し可能なギヤ位置（図７（Ｂ））へ切り換える場合、の何れかに電磁石４０をオンさせるために、第２ストッパ４１と第２ギヤアーム４５のくいつきを解除させるものである。
【０２７２】
図１６のステップＳ１０１においてセットアップ動作を実行した後に、ステップＳ１０２においてズームギヤ６５に切り換える際に実行されて、セットアップ動作でモータ２０をＣＷ方向に駆動したことにより、くいついた状態にある第２ストッパ４１と第２ギヤアーム４５を、ゆるみＡパルス分だけモータ２０をＣＣＷ方向に駆動させることにより、解除させる。
【０２７３】
また、ステップＳ１１９において巻き戻し処理を実行する前にセットギヤ４８からリワインドギヤ５１へ切り換える際に、またはステップＳ１２３において予備巻き上げ処理を実行する前にワインドギヤ７０へ切り換える際の途中のズームギヤ６５へ切り換える際に、ゆるみＡパルス分だけモータ２０をＣＣＷ方向に駆動させることにより、第２ギヤアーム４５の位置を位置決め部材４４に当て付かせて、上記第２ストッパ４１と第２ギヤアーム４５の間の隙間を保障させる。
【０２７４】
次に、ゆるみＡ′は、第１ギヤアーム３２がズーム／巻き上げ側にあるときに、ズームアップ／ダウン可能なギヤ位置（図６（Ａ））から巻き上げ可能なギヤ位置（図９（Ａ））へ切り換える場合、または、ズームアップ／ダウン可能なギヤ位置からセットアップ／ダウン可能なギヤ位置へ切り換える場合に、第３ストッパ７２と第３ギヤアーム６１のくいつきを解除させるものである。
【０２７５】
すなわち、図１６のステップＳ１１１においてズームアップ動作を実行した後に、レリーズスイッチをオンしてステップＳ１０８において１駒巻き上げを実行する際に、ワインドギヤ７０に切り換えたときのズームアップ動作で、モータ２０をＣＣＷ方向へ駆動させたことによって生じた第３ストッパ７２と第３ギヤアーム６１とのくいつきを、ゆるみＡ′パルス分だけモータ２０をＣＷ方向に駆動させることにより解除させる。
【０２７６】
また、ステップＳ１２３の予備巻き上げ処理を行う前にステップＳ１２２においてワインドギヤ７０へ切り換える際、または、予備巻き上げ処理を実行した後にステップＳ１２４においてワインドギヤ７０からセットギヤ４８へ切り換える際に、ゆるみＡ′パルス分だけモータ２０をＣＷ方向に駆動させることにより、第３ギヤアーム６１の位置をズームギヤ６５に噛み合わせて、上記第３ストッパ７２と第３ギヤアーム６１の間の隙を保障させる。
【０２７７】
ゆるみＢは、上記ゆるみＡを実行して、第２ストッパ４１と第２ギヤアーム４５のくいつきを解除させたり（モータ２０をＣＣＷ方向に駆動）、セットダウン動作を実行したりすると、第１ギヤアーム３２と第１ストッパ３５がくいついてしまう（図５（Ｂ）参照）ために、このくいつきを解除させるパルス数をゆるみＢとして、カメラ内の各部材の位置や駆動状況に合わせて、３つの種類（ゆるみＢ１，Ｂ２，Ｂ３）を設定したものである。
【０２７８】
まず、ゆるみＢ１は、図１６に示されるステップＳ１０２のズームギヤ切換において、カメラのレンズ鏡枠８３を沈胴位置からセットアップ動作させたときに、上記ゆるみＡのパルス分だけモータ２０をＣＣＷ方向に駆動させたことによって発生した第１ギヤアーム３２と第１ストッパ３５のくいつきを解除させるパルス数である。
【０２７９】
ゆるみＢ２は、図１６に示されるステップＳ１２２のワインドギヤ切換において第１ギヤアーム３２をセットギヤ４８からズームギヤ６５へ切り換えるとき（図１７のステップＳ１３３）、または図１６のステップＳ１１８においてカメラが沈胴位置にあってリワインドギヤ５１へ切り換えるときに、上記ゆるみＡのパルス分だけモータ２０をＣＣＷ方向に駆動させたことによって発生した機械的なたわみと、第１ギヤアーム３２と第１ストッパ３５のくいつきとを解除するパルス数である。
【０２８０】
ゆるみＢ３は、図１６のステップＳ１１６のセットダウン動作においてモータ２０をＣＣＷ方向に駆動してレンズ鏡枠８３を沈胴させたときに、第１ギヤアーム３２と第１ストッパ３５がくいついた状態になるが、第１ギヤアーム３２と第１ストッパ３５に力が加わったままの状態で放置されるとギヤが変形する可能性があるために、上記くいつき状態を解除するパルス数である。
【０２８１】
ゆるみＢ′は、上記ゆるみＡ′を実行して第３ストッパ７２と第３ギヤアーム６１のくいつきを解除させたりズームダウン動作を実行したり（モータ２０をＣＷ方向に駆動）すると、第１ギヤアーム３２と第１ストッパ３５がくいついた状態になり（図６（Ｂ）参照）、この状態を解除するために、モータ２０をＣＣＷ方向に駆動させるパルス数として設定されたものであり、カメラの位置や駆動状況にあわせて４種類（ゆるみＢ１′，ゆるみＢ２′，ゆるみＢ３′，ゆるみＢ４′）が設定されている。
【０２８２】
ゆるみＢ１′は、図１６に示したステップＳ１１９の巻き戻し動作を実行した後にステップＳ１２０においてギヤ駆動系をズームギヤ６５からセットギヤ４８へ切り換える際、またはステップＳ１２３の予備巻き上げ動作実行する前にステップＳ１２２においてセットギヤ４８からワインドギヤ７０に切り換える動作を行うときにレンズ鏡枠８３が沈胴状態にあってズームギヤ６５からワインドギヤ７０に切り換える際に、上記ゆるみＡ′を実行したことによって発生した第１ギヤアーム３２と第１ストッパ３５のくいつきを解除させるものである。
【０２８３】
ゆるみＢ２′は、カメラのレンズ鏡枠８３が沈胴状態にあってメカイニシャライズ（ギヤ位置の初期化）を実行した際に、第３ギヤアーム６１の第３遊星ギヤ６２をズームギヤ６５に噛み合わせるために、モータ２０をＣＷ方向に駆動させたことによって発生した第１ギヤアーム３２と第１ストッパ３５のくいつきを解除させるものである。
【０２８４】
ゆるみＢ３′は、撮影領域でレンズ鏡枠８３のズームアップ／ダウン動作を繰り返して、レリーズスイッチをオンしてフィルムを露光させ、巻き上げ動作を実行する際の切換動作（図１６のステップＳ１０７）時に選択され、ズームアップ動作を実行した後は、上記ゆるみＡ′を実行して発生した第１ストッパ３５と第１ギヤアーム３２のくいつきを解除させて、ズームダウン動作を実行した後は、該ズームダウン動作により発生した第１ギヤアーム３２と第１ストッパ３５のくいつきを解除させるものである。
【０２８５】
ゆるみＢ４′は、レンズ鏡枠８３を撮影領域から沈胴させるときに、レンズ鏡枠８３をズームダウンさせて当て付かせた後に、図１６のステップＳ１１５においてセットギヤ４８へ切り換える際に選択され、機械的たわみと、第１ギヤアーム３２と第１ストッパ３５のくいつきとを解除させるものである。
【０２８６】
次に、表２に、第１ギヤアーム３２の位置とレンズ鏡枠８３の位置や駆動状況によるゆるみパルスの選択方法を示す。
【０２８７】
【表２】

第１ギヤアーム３２がセット／巻き戻し側にあって、レンズ鏡枠８３がセットアップを完了した状態である場合は、表２（１）に示すように、ゆるみＡ，ゆるみＢ１を選択する。これは、図１６のステップＳ１０２の切り換え等に対応する。
【０２８８】
第１ギヤアーム３２がズーム／巻き上げ側にあり、レンズ鏡枠８３がワイド〜テレの間に位置し、ズームの駆動がズームアップした場合では、表２（２）に示すように、ゆるみＡ′，ゆるみＢ３′を選択する。
【０２８９】
また、同位置情報でズームの駆動がズームダウンした場合は、表２（３）に示すように、ゆるみＢ３′を選択する（ズームダウン動作がゆるみＡ′の役割をするため）。これは図１６のステップＳ１０７の切り換え時に対応する。
【０２９０】
第１ギヤアーム３２がズーム／巻き上げ側にあり、レンズ鏡枠８３がセットアップを完了した状態で、ズームの駆動がズームダウン動作である場合は、表２（４）に示すように、ゆるみＢ４′を選択する。
【０２９１】
また、同じく第１ギヤアーム３２がズーム／巻き上げ側にあり、レンズ鏡枠８３が沈胴している状態で、ズームの駆動がズームダウン動作である場合は、表２（５）に示すように、ゆるみＢ２′を選択する。これは図１６のステップＳ１１５の切り換えに対応する。
【０２９２】
第１ギヤアーム３２がセット／巻き戻し側でレンズ鏡枠８３が沈胴している場合は、表２（６）に示すように、ゆるみＡ，ゆるみＢ２を選択する。これは、図１６のステップＳ１１８の切り換えとステップＳ１２２の切り換えにおいて、第１ギヤアーム３２をセット／巻き戻し側からズーム／巻き上げ側へ切り換えることに対応する。
【０２９３】
第１ギヤアーム３２がズーム／巻き上げ側に位置して、レンズ鏡枠８３が沈胴している場合は、表２（７）に示すように、ゆるみＡ′とゆるみＢ１′を選択する。これは、図１６のステップＳ１２０における第１ギヤアーム３２のズーム／巻き上げ側からセット／巻き戻し側への切り換えと、ステップＳ１２２における第３ギヤアーム６１のズームギヤ６５からワインドギヤ７０への切り換えに対応する。
【０２９４】
図２３は、ゆるみ制御を示すフローチャートである。
【０２９５】
最初に、ゆるみＡまたはゆるみＡ′を実行するかを判断する（ステップＳ２１１）。切り換え動作を実行する直前にズームダウン動作を行っている場合には、すでに第２ギヤアーム４５と第２ストッパ４１、または第３ギヤアーム６１と第３ストッパ７２のくいつき状態は解除しているために、次の処理を飛ばして後述するステップＳ２１４へ行き、ゆるみＢまたはゆるみＢ′を実行する。
【０２９６】
また、ゆるみＡまたはゆるみＡ′を実行すると判断した場合には、第１ギヤアーム３２の位置が、セット／巻き戻し側にあるときはゆるみＡを選択してモータ２０の駆動方向をＣＣＷ方向に設定し、ズーム／巻き上げ側に位置しているときはゆるみＡ′を選択してモータ２０の駆動方向をＣＷ方向に設定する（ステップＳ２１２）。
【０２９７】
そして、設定パルス数分だけ所定方向にモータ２０を駆動させて、第２ギヤアーム４５と第２ストッパ４１、または第３ギヤアーム６１と第３ストッパ７２のくいつきを解除させる（ステップＳ２１３）。
【０２９８】
続いて、ゆるみＡ，Ａ′の実行、またはズームダウン動作によって生じた第１ギヤアーム３２と第１ストッパ３５のくいつきを解除するために、上述のようにギヤ位置とズーム情報に基づいて、ゆるみＢまたはゆるみＢ′を選択する。ゆるみＢを選択したときはモータ２０をＣＷ方向に駆動するよう設定し、また、ゆるみＢ′を選択したときはモータ２０をＣＣＷ方向に駆動するよう設定する（ステップＳ２１４）。
【０２９９】
次に、くいつきを解除させるためのゆるみ動作が再トライであるか否かを判断して（ステップＳ２１５）、１回目である場合には後述するステップＳ２１７へ飛び、再トライである場合には、ゆるみＢまたはゆるみＢ′のパルス数を、その再トライ回数に応じて所定パルスだけ増加させる（ステップＳ２１６）。
【０３００】
これは、第１ストッパ３５が引き上がらなかったのは、上記定数ではくいつきを解除させるには足りないためであると考えられるからである。
【０３０１】
そして、所定パルスだけモータ２０を駆動させることにより、第１ギヤアーム３２と第１ストッパ３５とのくいつきを解除させる（ステップＳ２１７）。
【０３０２】
ゆるみ制御の動作が終了したら電磁石４０を通電させて、第１ストッパ３５を引き上げる（ステップＳ２１８）。
【０３０３】
そして、第１ストッパ３５が引き上がったか否かを判断し（ステップＳ２１９）、第１ストッパ３５が引き上がらなかった場合（すなわち、ストッパＰＩ４６の信号が変化しなかった場合）は、電磁石４０への通電をオフして（ステップＳ２２０）、再トライ回数リミッタにかかったか否かを判断する（ステップＳ２２１）。
【０３０４】
所定回数だけ再トライしても第１ストッパ３５が引き上がらない場合はダメージ処理に移行し、まだ所定回数に達していない場合には上記ステップＳ２１２へ戻ってゆるみＡ，Ａ′から再トライする。
【０３０５】
また、上記ステップＳ２１９において第１ストッパ３５が引き上がった場合には、上記ストッパＰＩ４６がオンからオフへ切り換わる。こうしてストッパＰＩ４６が切り換わった場合は、電磁石４０を通電させたまま本ルーチンを終了させる。
【０３０６】
図２４に沈胴処理制御のフローチャートを示す。
【０３０７】
このフローチャートによる制御は、カメラの電池の入れ替えやパワースイッチのオフが検出されるとスタートする。
【０３０８】
まず、初期設定（ステップＳ２２２）において、ＥＥＰＲＯＭのギヤアーム位置記憶手段８７とズーム位置記憶手段８８にそれぞれ格納しているギヤアーム位置情報とズーム位置情報を呼び出して、ＣＰＵでなる制御手段９０の初期設定を行い、第１ギヤアーム３２の位置情報を見て、該第１ギヤアーム３２がセット／巻き戻し側，ズーム／巻き上げ側の何れかに噛合するよう初期化する。
【０３０９】
そして、第１ギヤアーム３２がセット／巻き戻し側，ズーム／巻き上げ側の何れに位置しているかを判断し（ステップＳ２２３）、セット／巻き戻し側にいる場合は、当て付きまでセットダウン動作を行って、第２ギヤアーム４５がセットギヤ４８に噛み合うように初期化する（ステップＳ２２４）。
【０３１０】
当て付きを検出した後に、第１ギヤアーム３２をセット／巻き戻し側からズーム／巻き上げ側へ切り換える（ステップＳ２２５）。
【０３１１】
また、上記ステップＳ２２３において、第１ギヤアーム３２がズーム／巻き上げ側に位置しているときは、上記処理を飛ばす（図１６のカメラパワーオフ等の処理に対応）。
【０３１２】
そして、ズームダウン処理（ステップＳ２２６）において、当て付きが検出されるかまたは所定パルス数に達するまでモータ２０をＣＷ方向に駆動させる。これにより、第３ギヤアーム６１の位置がズームギヤ６５に噛み合うように初期化されて、さらにレンズ鏡枠８３を収納可能位置まで駆動させる。
【０３１３】
そして、レンズ鏡枠８３を沈胴させるために、ズームアップ／ダウン可能なギヤ列からセットアップ／ダウン可能なギヤ列に切り換える（ステップＳ２２７）。
【０３１４】
セットアップ／ダウン側に切り換わったら、当て付きを検出するまでモータ２０をＣＣＷ方向に駆動（セットダウン動作）させてレンズ鏡枠８３を収納位置まで駆動し（ステップＳ２２８）、この処理を終了する。
【０３１５】
図２５に、上記図２４のステップＳ２２６に示したズームダウン処理のフローチャートを示す。
【０３１６】
初期設定（ステップＳ２２９）では、位置検出信号として上記モータＰＩとリセットＰＲ８４の状態を検出するように設定する。このときに、リセットＰＲ８４の出力がオンである場合には、撮影可能位置にいることになるために、セットアップ完了状態をＥＥＰＲＯＭに設定して、モータ２０の駆動電圧をフル電圧に設定し、モータ２０をＣＷ方向に駆動させる（ステップＳ２３０）。
【０３１７】
モータ２０を駆動している最中に常時リセットＰＲ８４の状態をチェックして、状態が変化した場合には、現在のズーム位置検出パルスをあらかじめ設定しておいたリセットＰＲ８４の状態変化点のレンズ鏡枠８３の位置情報に書き変えるとともに、セットアップ完了フラグの書き込みを行う（ステップＳ２３１）。
【０３１８】
モータ２０から所定パルスが出力されたか否かを判断し（ステップＳ２３２）、所定パルスに達していない場合には上記ステップＳ２３１に戻って上記動作を繰り返して行う。
【０３１９】
また、所定パルスが出力されて、当て付き検出位置付近までモータ２０が駆動されたことを検出した場合には、フル電圧でメカに当て付かせると壊れてしまう可能性があるために、モータ２０の駆動電圧をフル電圧から低電圧に切り換える（ステップＳ２３３）。
【０３２０】
続いて、リセットＰＲ８４の状態をチェックして（ステップＳ２３４）、モータＰＩの出力が停止することにより当て付きが検出され、または、所定パルス以上モータＰＩのパルスが出力されたか否かを判断し（ステップＳ２３５）、検出されるまで、上記ステップＳ２３４に戻って、リセットＰＲ８４の状態をチェックしながら低電圧でモータ２０を駆動し続ける。
【０３２１】
当て付きが検出されるかまたは所定パルス以上モータ２０が駆動された場合には、第３ギヤアーム６１の初期化が行われてレンズ鏡枠８３が収納可能位置まで駆動されたと判断して、ズーム位置情報の上記ワイド〜テレ間情報をクリアする（ステップＳ２３６）。
【０３２２】
レンズ鏡枠８３がセットアップ完了状態に位置している（ズーム位置情報のセットアップ完了状態フラグが立てられている）か否かを判断し（ステップＳ２３７）、セットアップ完了状態に位置している場合は、リセットＰＲ８４の出力がオンしているかを確認する（ステップＳ２３８）。ここで、リセットＰＲ８４の出力がオフしている場合は、レンズ鏡枠８３を駆動している際中に強制的に手などで止められたと判断して、ダメージ処理に入る。
【０３２３】
また、上記ステップＳ２３７においてレンズ鏡枠８３がセットアップ完了状態でない（沈胴位置にいる）場合や、セットアップ完了状態であって上記ステップＳ２３８においてリセットＰＲ８４の出力がオンになっている場合には、本ルーチンを終了させる。
【０３２４】
図２６に、上記図２４のステップＳ２２４，Ｓ２２８のセットダウン動作のフローチャートを示す。
【０３２５】
このセットダウン動作は、レンズ鏡枠８３を撮影可能位置（図１３参照）から収納位置（図１２参照）まで駆動させる動作である。駆動を開始する前に、まずセットアップ完了フラグのクリアを行う（ステップＳ２３９）。
【０３２６】
初期設定（ステップＳ２４０）では、位置検出信号として上記モータＰＩとリセットＰＲ８４を検出するように設定する。
【０３２７】
モータ２０の駆動電圧をフル電圧に設定してＣＣＷ方向に駆動させる（ステップＳ２４１）。モータ２０を駆動している最中に、常時、リセットＰＲ８４の状態をチェックして、状態が変化した場合には、現在のズーム位置検出パルスをあらかじめ設定しておいた位置情報に書き換える（ステップＳ２４２）。
【０３２８】
モータ２０から所定パルスが出力されたか否かを判断して（ステップＳ２４３）、所定パルスに達していない場合には、上記ステップＳ２４２に戻り、リセットＰＲ８４の状態をチェックしながらフル電圧でモータ２０を駆動し続ける。
【０３２９】
そして、所定パルスだけ駆動した場合には、メカ当て付き付近に達したと判断して、モータ２０の駆動電圧をフル電圧から当て付け用の低電圧に切り替える（この駆動電圧は上記ズームダウン動作における当て付けの電圧とは異なる）（ステップＳ２４４）。
【０３３０】
リセットＰＲ８４の状態をチェックして（ステップＳ２４５）、当て付き検出を行い（ステップＳ２４６）、モータＰＩの出力が停止するまで当て付き検出も含めて低電圧でモータ２０を駆動させる。
【０３３１】
モータＰＩの出力が停止してカメラのレンズ鏡枠８３が沈胴したと判断した場合には、モータ２０の通電をオフする（ステップＳ２４７）。
【０３３２】
このときには、セットダウン動作においてモータ２０をＣＣＷ方向に駆動させたために、第１ギヤアーム３２と第１ストッパ３５がくいついたまま強い力が加わった状態になっている。この状態のままで、例えばパワーオフさせて長時間放置するとギヤが変形してしまう可能性があるために、上記ゆるみＢ３パルス分だけモータ２０をＣＷ方向に駆動させて、上記くいつき状態を解除させる（ステップＳ２４８）。
【０３３３】
その後、リセットＰＲ８４の状態を検出して（ステップＳ２４９）、オンしている場合はそのまま終了し、また、該リセットＰＲ８４の出力がオフしている場合は、沈胴フラグをＥＥＰＲＯＭに書き込んで（ステップＳ２５０）から、本ルーチンを終了させる。
【０３３４】
なお、上述においては、くいつき解除定数としてパルス数を用いているが、これに限るものではなく、例えばくいつき解除定数として時間を用いることも可能である。
【０３３５】
また、カメラの駆動機構では、駆動負荷として、フィルムの巻上，巻戻、レンズ鏡枠の撮影位置までの繰り出しと沈胴（セットアップ，ダウン）、およびレンズ鏡枠のズームアップ，ダウンを設定しているために、ズーム位置情報とギヤ位置情報とに基づいてくいつき解除定数を選択するように構成したが、カメラの駆動機構の負荷として、例えば、シャッタ駆動やシャッタチャージ、バリア開閉、オートフォーカスレンズの繰出，繰込、ストロボ移動等を設定した場合には、駆動負荷の状態や位置情報とギヤ位置情報とに基づいてくいつき解除定数を分けて設定すれば、同様の効果を奏することができる。
【０３３６】
こうして、このような実施形態によれば、カメラのギヤ連結装置のギヤ位置とカメラの駆動状態に応じて適切なくいつき解除定数を選択することができるために、ギヤ切換を失敗することがなく動作が安定して、品質の良いカメラのギヤ連結装置となる。
【０３３７】
［付記］
以上詳述したような本発明の上記実施態様によれば、以下のごとき構成を得ることができる。
【０３３８】
（１） 駆動源と、
この駆動源の駆動力が伝達される太陽ギヤと、
この太陽ギヤと常に噛合する遊星ギヤと、
この遊星ギヤの回転軸と上記太陽ギヤの回転軸との間を連結する連結腕と、
この連結腕に嵌合して該連結腕の上記太陽ギヤ周りの回動を禁止する第１の位置と該禁止を解除する第２の位置とに変位するストッパ部材と、
このストッパ部材を駆動する電磁手段と、
上記遊星ギヤに選択的に噛合して駆動力が伝達される複数の被駆動部と、
現在の連結腕の位置に関する情報と、上記被駆動部の駆動状態および位置に関する情報とを読み書き可能に記憶する不揮発性の記憶手段と、
を具備したことを特徴とするカメラのギヤ連結装置。
【０３３９】
（２） 上記不揮発性の記憶手段は、上記ストッパ部材を上記第１の位置から第２の位置に変位させる際に該ストッパ部材と上記連結腕の嵌合状態を解除するための複数の定数を記憶している嵌合解除定数記憶手段を有し、
上記連結腕の位置に関する情報と上記被駆動部の駆動状態および位置に関する情報とに基づいて、上記嵌合解除定数記憶手段が記憶している定数の中から適切な定数を選択することを特徴とする上記（１）に記載のカメラのギヤ連結装置。
【０３４０】
（３） 上記不揮発性の記憶手段は、上記連結腕の位置に関する情報を記憶する連結腕位置記憶手段と、上記被駆動部の駆動状態および位置に関する情報を記憶する被駆動部駆動状態記憶手段と、を有することを特徴とする上記（２）に記載のカメラのギヤ連結装置。
【０３４１】
（４） 駆動源からの駆動力を被駆動部に伝達するカメラのギヤ連結装置において、
該ギヤ連結装置における部材同士のくいつきを、カメラの状態に応じて解除するのに必要な複数の定数を記憶する記憶手段を備えたことを特徴とするカメラのギヤ連結装置。
【０３４２】
（５） 単一の駆動源からの駆動力を複数の被駆動部に択一的に伝達するカメラのギヤ連結装置において、
該ギヤ連結装置における部材同士のくいつきを、同ギヤ連結装置の状態と選択された被駆動部の状態とに応じて解除するのに必要な複数の定数を記憶する不揮発性の記憶手段を備えたことを特徴とするカメラのギヤ連結装置。
【０３４３】
（６） 複数の被駆動部と、
これらの被駆動部に択一的に駆動源の駆動力を伝達する、連結腕を有してなる遊星クラッチ機構と、
この遊星クラッチ機構の連結腕に嵌合して該連結腕の回動を禁止する第１の位置と該禁止を解除する第２の位置とに変位するストッパ部材と、
現在の連結腕の位置に関する情報と、上記被駆動部の駆動状態および位置情報とを読み書き可能に記憶する不揮発性の記憶手段と、
を具備したことを特徴とするカメラのギヤ連結装置。
【０３４４】
（７） 複数の被駆動部と、
これらの被駆動部に択一的に駆動源の駆動力を伝達する、連結腕を有してなる遊星クラッチ機構と、
この遊星クラッチ機構の連結腕に嵌合して該連結腕の回動を禁止する第１の位置と該禁止を解除する第２の位置とに変位するストッパ部材と、
このストッパ部材を駆動する電磁手段と、
上記ストッパ部材が上記第１の位置から第２の位置に変位する際に、該ストッパ部材と連結腕との嵌合を解除するのに必要な定数を、上記遊星クラッチ機構の状態と選択された被駆動部の状態とに応じて複数記憶している不揮発性の記憶手段と、
上記遊星クラッチ機構の状態と選択された被駆動部の状態とに応じて上記不揮発性の記憶手段に記憶された定数を選択し、その選択した定数に基づいて上記駆動源および電磁手段を駆動して上記ストッパ部材と連結腕との嵌合を解除させる制御手段と、
を具備したことを特徴とするカメラのギヤ連結装置。
【０３４５】
（８） 太陽ギヤと、
上記太陽ギヤと常に噛合する遊星ギヤと、
上記太陽ギヤと上記遊星ギヤとの回転軸間を連結する連結腕と、
上記連結腕における上記太陽ギヤ周りの回動を禁止する状態と解除する状態とに変位するストッパ部材と、
を具備し、
上記太陽ギヤ周りの回動を禁止する状態では上記連結腕と上記ストッパ部材が嵌合状態となり上記ストッパ部材の動作を禁止し、単一のモータと単一の電磁手段により少なくとも２つ以上の被駆動部を切り換えるカメラのギヤ連結装置において、
現在噛合しているギヤ列の連結腕の位置情報と上記被駆動部の駆動状態や位置情報とを読み書き可能な不揮発性のメモリに記憶させることを特徴とするカメラのギヤ連結装置。
【０３４６】
（９） 上記電磁手段により上記ストッパ部材を太陽ギヤ周りの回動の禁止を解除して被駆動部を切り換える際に、上記ストッパ部材と上記連結腕の嵌合状態を解除する少なくとも２つ以上の定数を記憶している嵌合解除定数記憶手段を有し、上記連結腕の位置情報と上記被駆動部の駆動状態や位置情報から上記嵌合解除定数記憶手段の中から適切な定数を選択することを特徴とする上記（８）に記載のカメラのギヤ連結装置。
【０３４７】
（１０） 上記（１），（２），（３），（５），（６），（７）において、上記不揮発性の記憶手段はＥＥＰＲＯＭでなる。
【０３４８】
（１１） 上記（８），（９）において、上記不揮発性のメモリはＥＥＰＲＯＭでなる。
【０３４９】
（１２） 上記（２），（３），（４），（５），（７），（９）において、上記定数はパルス数でなる。
【０３５０】
（１３） 上記（２），（３），（４），（５），（７），（９）において、上記定数は時間でなる。
【０３５１】
（１４） 上記（１），（２），（３），（４），（６），（７）において、上記駆動源は単一のものである。
【０３５２】
（１５） 上記（１），（２），（３），（７）において、上記電磁手段は単一のものである。
【０３５３】
（１６） 上記（１）から（９）において、上記被駆動部は、カメラのズーム機構、レンズ鏡枠の沈胴機構、フィルム駆動機構、オートフォーカス機構、シャッタ駆動機構、バリア開閉機構、またはストロボの移動機構の少なくとも１つを有してなる。
【０３５４】
【発明の効果】
以上説明したように本発明のギヤ連結装置によれば、機器の状態に応じてくいつきを適切に解除して、正確な動作を維持することができる。
【図面の簡単な説明】
【図１】本発明の一実施形態を示すカメラに内蔵される駆動装置の構成、および、その装置の１つの駆動状態を示す拡大斜視図。
【図２】上記図１のカメラの駆動装置の１つの駆動状態を示す拡大斜視図。
【図３】上記図１のカメラの駆動装置の他の１つの駆動状態を示す拡大斜視図。
【図４】上記図１のカメラの駆動装置の他の１つの駆動状態を示す拡大斜視図。
【図５】上記図１のカメラの駆動装置の動作状態を示す図であって、（Ａ）、（Ｂ）はそれぞれある動作状態の平面図。
【図６】上記図１のカメラの駆動装置の動作状態を示す図であって、（Ａ）、（Ｂ）はそれぞれある動作状態の平面図。
【図７】上記図１のカメラの駆動装置の動作状態を示す図であって、（Ａ）、（Ｂ）はそれぞれある動作状態の平面図。
【図８】上記図１のカメラの駆動装置の動作状態を示す図であって、（Ａ）、（Ｂ）はそれぞれある動作状態の平面図。
【図９】上記図１のカメラの駆動装置の動作状態を示す図であって、（Ａ）、（Ｂ）はそれぞれある動作状態の平面図。
【図１０】上記図１のカメラの駆動装置の動作状態を示す図であって、（Ａ）、（Ｂ）はそれぞれある動作状態の平面図。
【図１１】上記図１のカメラの駆動装置の動作状態を示す図であって、（Ａ）、（Ｂ）はそれぞれある動作状態の平面図。
【図１２】本実施形態において、収納位置にあるレンズ鏡枠を示す斜視図。
【図１３】本実施形態において、撮影可能な位置にあるレンズ鏡枠を示す斜視図。
【図１４】本実施形態において、レンズがテレ端まで繰り出された位置にあるレンズ鏡枠を示す斜視図。
【図１５】本実施形態のカメラの駆動装置の制御装置の構成を示すブロック図。
【図１６】本実施形態のカメラにおいて、電源をオンした後の駆動制御を含む撮影シーケンスを示すフローチャート。
【図１７】上記図１６の駆動制御を含む撮影シーケンスで呼び出される各ギヤの切り換え処理を示すフローチャート。
【図１８】上記図１７のルーチンで呼び出される第１ギヤアーム切り換え処理を示すフローチャート。
【図１９】上記図１７のルーチンで呼び出される第２ギヤアーム切り換え処理を示すフローチャート。
【図２０】上記図１７のルーチンで呼び出される第２ギヤアーム切り換え処理を示すフローチャート。
【図２１】上記図１７のルーチンで呼び出される第３ギヤアーム切り換え処理を示すフローチャート。
【図２２】上記図１７のルーチンで呼び出される第３ギヤアーム切り換え処理を示すフローチャート。
【図２３】本実施形態におけるゆるみ制御を示すフローチャート。
【図２４】本実施形態における沈胴処理制御を示すフローチャート。
【図２５】上記図２４のルーチンで呼び出されるズームダウン処理を示すフローチャート。
【図２６】上記図２４のルーチンで呼び出されるセットダウン動作を示すフローチャート。
【符号の説明】
２０…モータ（駆動源）
３０，３８，６０…太陽ギヤ
３１，４７，６２…遊星ギヤ
３２，４５，６１…アーム（連結腕）
３４…クラッチＰＩ（第１アーム位置検出手段）
３５，４１，７２…ストッパ（ストッパ部材）
４０…電磁石（電磁手段）
４６…ストッパＰＩ（ストッパ位置検出手段）
８４…リセットＰＲ（ズーム位置検出手段）
８７…ギヤアーム位置記憶手段（連結腕位置記憶手段）
８８…ズーム位置記憶手段（被駆動部駆動状態記憶手段）
８９…くいつき解除定数記憶手段（嵌合解除定数記憶手段）
９０…制御手段
９１…モータ駆動手段（駆動手段）
９３…位置検出信号選択手段（検出手段，モータ駆動信号出力手段）
９４…第１アーム位置検出手段
９５…モータ駆動量検出手段（検出手段，モータ駆動信号出力手段）
９６…ストッパ位置検出手段
９７…ズーム位置検出手段
９８…信号処理手段[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention, GiGear coupling device, more specifically, transmitting a driving force from a driving source to a driven portion.RugiGear connection device.
[0002]
[Prior art]
With the recent computerization of cameras, various driven systems included in the cameras, such as film winding and rewinding, autofocus, and electric zoom, are driven using an electromagnetic actuator such as a motor as a driving source. Has become.
[0003]
In such a camera having a plurality of driven systems, some of the plurality of driven systems are driven by using the same electromagnetic actuator in order to reduce space and reduce cost. In this case, a driven system is selected and driven by using, for example, a planetary clutch mechanism.
[0004]
In the drive mechanism using the planetary clutch mechanism, a relatively large space is required because each driven gear must be disposed on the orbit of the planetary gear.
[0005]
Further, a mechanism has been proposed in which the planetary gear is locked at a predetermined position on the orbit by an electromagnetic force. However, in this case, power consumption is increased and the cost is also increased.
[0006]
In view of such a point, the present applicant has disclosed in Japanese Patent Application No. 7-113409, a plurality of sun gears, a plurality of planetary gears always meshing with these sun gears, and these planetary gears and sun gears. And a plurality of sets of a plurality of stoppers that are displaced between a state in which rotation of the sun gear around the sun gear is prohibited and a state in which the rotation of the gear arms is released. A camera has been proposed in which a stopper is driven by a single electromagnet to select a plurality of driven members to be driven. In this camera, loosening drive is performed in order to release the sticking between the stopper and the gear arm.
[0007]
This makes it possible to transmit power to a plurality of driven parts by using a single electromagnetic means without using a complicated switching mechanism, so that the camera has low power consumption, is small, and is advantageous in cost. ing.
[0008]
[Problems to be solved by the invention]
However, according to the above-mentioned Japanese Patent Application No. Hei 7-113409, only a single amount of loosening drive is performed because the bent portion differs depending on each state such as the zoom position and the gear position of the camera. Then, it may not be possible to release the sticking.
[0009]
The present invention has been made in view of the above circumstances,EquipmentIt is possible to properly release the sticking according to the condition and maintain accurate operationRugiThe purpose of the present invention is to provide a gear connection device.
[0010]
[Means for Solving the Problems]
To achieve the above objectivesThe first gear connecting device of the present invention includes:A single drive source, a sun gear to which the driving force of the drive source is transmitted, a planetary gear that always meshes with the sun gear, and a connection between the rotation axis of the planetary gear and the rotation axis of the sun gear Connecting arm and this connecting armAbutA stopper member displaced between a first position for inhibiting rotation of the connecting arm around the sun gear and a second position for releasing the inhibition, a single electromagnetic means for driving the stopper member, A plurality of driven parts to be selectively meshed with the planetary gears to transmit the driving force, information on the current position of the connecting arm, and information on the driving state and the position of the driven parts are stored in a readable / writable manner. Non-volatile storage means;Control means for driving the drive source by a predetermined amount so as to loosen the connecting arm and the stopper member in a direction to separate the stopper arm from the first position when the stopper member is displaced from the first position to the second position; Setting means for setting a constant relating to the predetermined amount when driving the connecting arm and the stopper member in a direction in which the connecting arm is separated from the stopper member; and a direction in which the connecting arm and the stopper member are separated again after driving by the control means. Determination means for determining whether or not to drive, and when the determination means determines that driving is to be performed again, the connecting arm and the stopper member are separated based on a constant set by the setting means. The driving is performed again in the direction to be performed.
[0011]
To achieve the above objectivesThe second gear coupling device according to the present invention, in the first gear coupling device, further includes constant storage means for storing a plurality of constants for driving the stopper member and the connecting arm in a direction separating from each other. ,Based on the information on the position of the connecting arm and the information on the driving state and position of the driven part,Constant storage meansIs to select an appropriate constant from the constants stored by.
[0012]
To achieve the above objectivesThe third gear connecting device of the present invention is the first gear connecting device,The non-volatile storage unit includes a connection arm position storage unit that stores information about the position of the connection arm, and a driven unit drive state storage unit that stores information about the drive state and position of the driven unit. It is characterized by the following.
In order to achieve the above object, the fourth gear coupling device according to the present invention is arranged such that, when the first gear coupling device is driven again based on the judgment of the judging means, Is set in such a manner that a shortfall in driving the connecting arm and the stopper member in a direction separating from each other by the control means is added according to the number of driving operations.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIGS. 1 to 26 show an embodiment of the present invention. FIGS. 1 to 4 and FIGS. 12 to 14 show a driving device as a gear connecting device built in a camera according to an embodiment of the present invention. FIG. 2 is an enlarged perspective view showing the configuration and a driving state. 5 to 11 are plan views showing the operation state of the camera driving device according to the present embodiment.
[0017]
With reference to FIGS. 1 to 14, a description will be given of the configuration of a drive device for performing the forward / backward drive of the lens barrel, the film winding / rewinding drive in the camera of the present embodiment. This drive device is arranged so that the camera body is located below the drive device in the perspective views of FIGS.
[0018]
The single motor 20 as a drive source is a motor that has a pinion gear 21 on its output shaft and that can rotate forward and backward. The pinion gear 21 meshes with the first sun gear 30 via a reduction gear train (not shown), and transmits the rotational force of the motor 20 to the first sun gear 30.
[0019]
On the upper surface of the first sun gear 30, a first gear arm 32, which is a connecting arm, is provided, and is rotatable coaxially with the first sun gear 30. The first gear arm 32 has a shaft pin 32a suspended therefrom, and a first planetary gear 31 is axially mounted on the shaft pin 32a in a state of meshing with the first sun gear 30.
[0020]
The first planetary gear 31 has a predetermined friction (not shown) between the first planetary gear 31 and the first gear arm 32. Therefore, when the first sun gear rotates, the force of the friction causes the first gear arm 32 to generate a rotating force in the direction in which the first sun gear 30 rotates.
[0021]
The first gear arm 32 is provided with protrusions 32b and 32c for stopping the rotation of the first gear arm 32 and a light shielding part 32d for shielding a clutch PI (photo interrupter) 34 described later.
[0022]
On the revolving locus of the first planetary gear 31, a gear 36, which is a driven gear axially mounted on a support shaft 36a, and a third sun gear 60, which is also a driven gear axially mounted on a support shaft 60a, are provided. I have.
A first stopper 35 serving as a stopper member is rotatably supported coaxially with the gear 36 on the support shaft 36a.
[0023]
The first stopper 35 has a counterclockwise (hereinafter referred to as CCW) rotation of the first gear arm 32 as shown in FIG. 5B and a clockwise rotation of the first gear arm 32 as shown in FIG. 6B. (Hereinafter referred to as CW) A locking portion 35a for locking and preventing rotation is provided. Further, positioning members 33a and 33b are provided around the first gear arm 32. Each of the positioning members 33a and 33b rotates the first gear arm 32 in the CW direction as shown in FIG. As described above, the rotation in the CCW direction is restricted.
[0024]
The gear 36 meshes with a gear 37 pivotally mounted on a support shaft 37a, and the gear 37 meshes with a second sun gear 38 pivotally mounted on a support shaft 38a.
[0025]
A second gear arm 45, which is a connecting arm, is provided below the second sun gear 38, and is rotatable coaxially with the second sun gear 38. A shaft pin 45a is suspended from the second gear arm 45, and a second planetary gear 47 meshes with the second sun gear 38 and is axially mounted on the shaft pin 45a.
[0026]
The second planetary gear 47 has a predetermined friction (not shown) between itself and the second gear arm 45. Therefore, when the second sun gear 38 rotates, the force of the friction generates a rotating force in the second gear arm 45 in the direction in which the second sun gear 38 rotates.
[0027]
On the revolving locus of the second planetary gear 47, a set gear 48, which is a driven gear pivotally mounted on the support shaft 48a, and a gear 49, which is a driven gear pivotally mounted on the support shaft 49a, are arranged.
[0028]
The gear 49 transmits rotational power to a rewind gear 51 as a rewinding drive mechanism via step gears 50 and 50 'which are reduction gears. The rewind gear 51 is provided with a claw (not shown) which is engaged with a spool shaft in the patrone to rewind the film (not shown). When the rewind gear 51 rotates in the CW direction, the film is put in the patrone. Rewind.
[0029]
The set gear 48 is used to move a lens frame 83 (to be described later) from a retracted position (the state shown in FIG. 12) to a shooting position (the state shown in FIG. 13) (hereinafter, this operation is referred to as a set-up operation), This gear can be moved from a retracted position to a retracted position (hereinafter, this operation is referred to as a set-down operation). That is, it is connected to a set drive system gear train ending with a set drive set gear 48 on the lens frame side, and the lens frame 83 performs a set-up operation by rotating the set gear 48 in the CW direction. , CCW, the lens frame 83 performs a set-down operation.
[0030]
A support shaft 41a is disposed at a lower position that does not interfere with the second sun gear 38, and a second stopper 41 as a stopper member is rotatably supported on the support shaft 41a.
[0031]
The second stopper 41 engages with the convex portion 45b of the second gear arm 45 as shown in FIG. 5A to lock and prevent the rotation of the second gear arm 45 in the CW direction. It has a stop arm 41d.
[0032]
Positioning members 43 and 44 are provided around the second gear arm 45, respectively, as shown in FIG. 7B, the rotation of the second gear arm 45 in the CW direction, and the positioning member 43 and 44 shown in FIG. Thus, the rotation of the second gear arm 45 in the CCW direction is restricted.
[0033]
Further, the second stopper 41 is provided with a light shielding portion 41b that shields a stopper PI (photo interrupter) 46 described later.
[0034]
Below the third sun gear 60, a third gear arm 61, which is a connecting arm, is provided, and is rotatably supported coaxially with a support shaft 60a of the sun gear 60. A shaft pin 61a is suspended from the third gear arm 61, and a third planetary gear 62 and a gear 62 ', which are integral step gears, mesh with the third sun gear 60 on the shaft pin 61a. And it is attached to the shaft. However, the third planetary gear 62 meshes with the third sun gear 60.
[0035]
The third planetary gear 62 and the gear 62 ′ are provided with a predetermined friction (not shown) between the third planetary gear 62 and the gear 62 ′. Therefore, when the third sun gear 60 rotates, the force of the friction causes the third gear arm 61 to generate a rotating force in the direction in which the third sun gear 60 rotates.
[0036]
On the revolving locus of the third planetary gear 62, a zoom gear 65, which is a driven member pivotally mounted on a support shaft 65a, and a driven member integrated with a spool for winding a film, and a wind gear as a winding mechanism 70 are provided. The gear 65 is disposed below the gears 37 and 38 at a position that does not interfere with the gears 37 and 38.
[0037]
A first zoom bevel gear 80 (see FIG. 12 and the like) that rotates integrally is provided coaxially with the zoom gear 65, and a second zoom bevel gear is provided at a position where the first zoom bevel gear 80 meshes with the first zoom bevel gear 80. 81, the direction of the drive axis is changed by 90 ° so as to match the direction of the optical axis of the lens frame 83 of the camera.
[0038]
The second zoom bevel gear 81 is provided with a zoom long gear 82 that rotates coaxially and integrally. At the end of the zoom long gear 82, gear teeth 82a meshing with the gear teeth 83a of the lens frame 83 when the lens frame 83 is in a shooting state are provided.
[0039]
Then, when the zoom gear 65 rotates in the CW direction, the rotation is transmitted through the above-mentioned zoom gear train and the lens frame 83 zooms down. On the other hand, when the zoom gear 65 rotates in the CCW direction, the lens frame 83 performs a zoom-up operation. .
[0040]
In addition, silver seals 83b and 83c are attached to the lens barrel 83 to detect an absolute position during setup down or zoom up / down, and the lens PR 83 (to be described later) is used to reset the lens. The position of the mirror frame 83 is detected.
[0041]
Of the third planetary gear 62 and the gear 62 ', which are the above-mentioned stepped gears, the third planetary gear 62, which is a large gear side thereof, can mesh with the zoom gear 65, and the gear 62', which is a small gear side, is a wind gear 70. It is possible to mesh.
[0042]
A support shaft 72a is provided below the second sun gear 38 and at a position that does not interfere with the second sun gear 38, and a third stopper 72 serving as a stopper member is provided on the support shaft 72a. It is rotatably supported.
[0043]
The third stopper 72 is provided with a locking arm 72b for locking the rotation of the third gear arm 61 in the CCW direction as shown in FIG.
[0044]
Positioning members 63 and 64 are provided around the third gear arm 61, and the third gear arm 61 rotates in the CW direction as shown in FIG. As described above, the rotation of the third gear arm 61 in the CCW direction is restricted.
[0045]
The first stopper 35 is rotatable about the support shaft 36a, and has a vertically extending convex pin 35b.
[0046]
A plunger-type electromagnet 40 serving as an electromagnetic means is disposed near the first stopper 35. The electromagnet 40 is provided with a movable iron core 40a that is attracted leftward in FIG. 5A when energized, and a compression spring 40b that urges the movable iron core 40a rightward in the drawing.
[0047]
When the electromagnet 40 is not energized, the movable core 40a is pushed rightward in FIG. 5A by the compression spring 40b, and is brought into contact with the position in FIG. 5A by a positioning pin (not shown). Position is regulated.
[0048]
Further, by making the force of the compression spring 40a weaker than the attraction force when the electromagnet 40 is energized, when the electromagnet 40 is energized, the movable core 40a is attracted to the left in FIG. (See FIG. 8A).
[0049]
The movable iron core 40a of the electromagnet 40 has a notch at the end, into which the convex pin 35b of the first stopper 35 is fitted. Therefore, the first stopper 35 rotates in the CCW direction when the electromagnet 40 is energized and the movable iron core 40a is attracted and moves to the left as shown in FIG. When the power is turned off and the movable iron core 40a is pushed back to the right as shown in FIG. 5A by the force of the compression spring 40b, the armature rotates in the CW direction.
[0050]
An arm 35c is formed at the opposite end of the first stopper 35 from the engaging portion 35a. The arm 35c is disposed below the gear 37 and does not interfere with the gear 37.
[0051]
The second stopper 41 is rotatable around the support shaft 41a and has a gear portion 41f. The right end has an arm 41e. Furthermore, it has a convex part 41d as a locking part.
[0052]
A pin 42a is suspended from a main body (not shown) near the second stopper 41, and a torsion spring 42 is inserted into the pin 42a. One end of the torsion spring 42 is hung on the positioning member 43, and the other end is hooked on one end of the second stopper 41 to urge the second stopper 41 in the CCW direction. The second stopper 41 is located below the gears 37 and 38 and is located at a position that does not interfere with the gears 37 and 38.
[0053]
The third stopper 72 is rotatable about the support shaft 72a, a gear portion 72c is provided at a central portion, a locking arm 72b is provided at a right end, and a left end is further provided. An arm 72d is provided in the part.
[0054]
In the vicinity of the upper third stopper 72, a positioning pin 73 is suspended from a main body (not shown), and regulates rotation of the third stopper 72 in the CW direction. The third stopper 72 is disposed below the gears 37 and 38 and is located at a position where it does not interfere with the gears 37 and 38.
[0055]
The gear portion 41f of the second stopper 41 and the gear portion 72c of the third stopper 72 mesh with each other. When the second stopper 41 rotates in the CW direction, the third stopper 72 rotates in the CCW direction. . The second stopper 41 is biased in the CCW direction by the torsion spring 42, but is shown in FIG. 5A because the third stopper 72 is in contact with the positioning pin 73. Held in position.
[0056]
Further, the arm portion 41e of the second stopper 41 and the arm portion 35c of the first stopper 35 have a slight gap in the rotation direction, and are arranged at the same position in the height direction.
[0057]
When the electromagnet 40 is energized and the movable core 40a is attracted to the left in the drawing, the first stopper 35 rotates in the CCW direction. At this time, the locking portion 35a of the first stopper 35 rotates to a position outside the rotation locus of the first gear arm 32, that is, to a position where the projection 32b does not come into contact with the first gear arm 32 even when the first gear arm 32 rotates. .
Further, the arm 35c of the first stopper 35 presses the arm 41e of the second stopper 41 against the force of the torsion spring 42 when the first stopper 35 rotates in the CCW direction. While rotating, the second stopper 41 rotates in the CW direction, thereby rotating the third stopper 72 in the CCW direction.
[0058]
At this time, the locking arm 41d of the second stopper 41 is at a position outside the rotation locus of the convex portion 45b for locking the rotation of the second gear arm 45, that is, the convex portion 45b of the second gear arm 45 is rotated. It turns to a position where it does not come in contact with it. Further, the locking arm 72b of the third stopper 72 rotates out of the rotation locus of the projection 61b for locking the rotation of the third gear arm 61 (see FIG. 8A).
[0059]
When the electromagnet 40 is de-energized, the movable iron core 40a is pushed back by the force of the compression spring 40b, whereby the movable iron core 40a protrudes to a position where it comes into contact with the positioning pin, and the first stopper 35 is moved in the CW direction. Rotate to.
[0060]
With the operation, the second stopper 41 and the third stopper 72 are rotated in the CCW direction and the CW direction by the force of the torsion spring 42 until the arm 72d of the third stopper 72 contacts the positioning pin 73. (See FIG. 5A).
[0061]
The locking arm 72b of the third stopper 72 is provided at a position above the arm 41e of the second stopper 41, and has a slight gap in the thrust direction.
[0062]
In the above driving device, when the rewind gear 51 rotates in the CW direction, an operation of rewinding the film into the cartridge is performed.
[0063]
When the set gear 48 is rotated in the CW direction, a set-up operation is performed in which the lens frame 83 is extended to the state shown in FIG. The gear teeth 82a of the zoom long gear 82 mesh with each other.
[0064]
When this setup operation is performed, the position of the silver seal 83b attached to the lens frame 83 also moves by the movement of the lens frame 83. When the setup operation is completed, the silver seal 83b comes directly below the reset PR84, and the signal of the reset PR84 changes from off to on.
[0065]
On the other hand, when the set gear 48 rotates in the CCW direction, a set-down operation is performed in which the lens frame 83 is retracted to the storage position shown in FIG. The gear teeth 82a of the zoom long gear 82 are disengaged.
[0066]
When the gear teeth 83a of the lens frame 83 are disengaged from the gear teeth 82a of the zoom long gear 82 by executing this set-down operation, the position of the silver seal 83b moves, and the signal of the reset PR 84 is turned off from on. Change.
[0067]
When the zoom gear 65 rotates in the CCW direction in the photographable state as shown in FIG. 13, the zoom-up operation of the lens barrel 83 is performed, and the lens is extended to the telephoto end as shown in FIG. become. At this time, whether or not the zoom-up has reached the telephoto end can be determined based on whether or not the silver seal 83c is directly below the reset PR84.
[0068]
On the other hand, when the zoom gear 65 rotates in the CW direction, a zoom-down operation of the lens barrel 83 is performed.
[0069]
When the wind gear 70 rotates in the CW direction, the film is wound up.
[0070]
The above-described set-up operation or set-down operation is performed by a gear drive system including a gear 36, a gear 37, a second sun gear 38, a second planetary gear 47, a second gear arm 45, and a set gear 48 constituting a first drive unit. This is done by transmitting power.
[0071]
In the above-described zoom-down operation or zoom-up operation, the driving force of the third sun gear 60, the third planetary gear 62, the third gear arm 61, and the zoom gear 65 constituting the second driving means is reduced by a gear driving system. It is transmitted and performed.
[0072]
Next, the driving operation and the driving force switching operation of the driving device as the gear coupling device of the camera configured as described above will be described with reference to FIGS.
1 and 5A, when a power switch (not shown) of the camera is turned on and the motor 20 is rotated in the CW direction, the first sun gear 30 rotates in the CW direction. Then, the first gear arm 32 rotates in the CW direction, the projection 32c abuts on the positioning member 33b, and the first planetary gear 31 rotates in the CCW direction. The rotation of the gears 36 and 37 causes the second sun gear 38 to rotate in the CW direction, the second gear arm 45 to rotate in the CW direction, and the protrusion 45 b to contact the second stopper 41. Then, the second planetary gear 47 rotates in the CCW direction, and the set gear 48 rotates in the CW direction, thereby performing the set-up operation of the lens barrel 83.
[0073]
When the switching operation to the zoom-up operation is performed after the above-described set-up operation, the electromagnet 40 is turned on in FIG. 1 and FIG. 5A, and the movable core 40a is moved to the left in FIG. Suction in the direction. The first stopper 35 rotates in the CCW direction, and the first stopper 35 pushes the second stopper 41. The second stopper 41 rotates in the CW direction, and the third stopper 72 rotates in the CCW direction (see the state in FIG. 8A).
[0074]
The attraction force of the electromagnet 40 is set to overcome the spring force of the compression spring 40b and the torsion spring 42.
[0075]
At this time, the light blocking portion 41b of the second stopper 41 enters the stopper PI46, and changes the output signal from on to off. If the convex portion 45b of the second gear arm 45 and the locking arm 41d of the stopper 41 are in a broken state and the movable iron core 40a cannot be attracted, the PI 46 does not change from on to off, so that When the state is detected, the energization of the electromagnet 40 is once turned off, and the motor 20 is driven by a predetermined amount in the order of the CCW direction and the CW direction to loosen the sticking state. Aspirate 40.
[0076]
8A, when the motor 20 is rotated in the CCW direction while the electromagnet 40 is energized, the sun gear 30 rotates in the CCW direction. Since there is friction between the gear 36 and a main body (not shown), the first planetary gear 31 revolves around the sun gear 30 in the CCW direction while rotating around until it separates from the gear 36 (FIG. 11A). Status).
[0077]
Note that the friction torque of the gear 36 due to the friction force is set to be larger than the friction torque of the first planetary gear 31.
[0078]
As shown in FIG. 11A, when the first gear arm 32 rotates in the CCW direction together with the first planetary gear 31, the light blocking portion 32d of the first gear arm 32 enters the clutch PI34, and changes the signal from on to off. . When an off signal is input to the clutch PI34, the energization of the electromagnet 40 is stopped while rotating the motor 20 in the CCW direction.
[0079]
When the energization of the electromagnet 40 is cut off, the movable iron core 40a is pushed back by the force of the compression spring 40b, and the locking portion 35a of the first stopper 35 comes into contact with the outer diameter side surface of the convex portion 32b of the first gear arm 32 (FIG. 11 (B) state).
[0080]
By setting the friction torque of the first planetary gear 31 to be larger than the torque acting on the first gear arm 32 via the first stopper 35 formed by the compression spring 40b and the torsion spring 42, the first gear arm 32 rotates in the CCW direction while the first stopper 35 is in contact with the side surface.
[0081]
Next, if there is a friction between the third sun gear 60 and a main body (not shown), the first planetary gear 31 revolves again and revolves around the sun gear 30 in the CCW direction. The friction torque of the sun gear 60 due to the friction force is set to be larger than the friction torque of the first planetary gear 31.
[0082]
When the first gear arm 32 rotates in the CCW direction as it is, the locking portion 35a of the first stopper 35 comes off the outer diameter side surface of the convex portion 32b of the first gear arm 32, and the force of the compression spring 40b is applied. The movable iron core 40a is pushed back to the position of the positioning portion, and at the same time, the first stopper 35 is rotationally driven in the CW direction.
[0083]
Further, the second stopper 41 and the third stopper 72 are rotated by the force of the torsion spring 42 until the arm 72d of the third stopper 72 contacts the positioning member 73.
[0084]
Further, at this time, since the light blocking portion 41b of the second stopper 41 escapes from the stopper PI46, the signal of the PI46 changes from off to on (the state of FIGS. 2 and 6B). The rotation of the motor 20 is stopped by detecting this signal.
[0085]
The zoom-up operation of the lens barrel 83 is performed by rotating the motor 20 in the CCW direction and rotating the first sun gear 30 in the CCW direction in FIGS. By this rotation, the first gear arm 32 rotates in the CCW direction, the projection 32C abuts on the positioning member 33a, the first planetary gear 31 rotates in the CW direction, and the third sun gear 60 rotates in the CCW direction. . The third gear arm 61 rotates in the CCW direction, the projection 61b abuts against the third stopper 72, the third planetary gear 62 rotates in the CW direction, and the zoom gear 65 rotates in the CCW direction. The zoom-up operation is performed (the state of FIG. 6A).
[0086]
In addition, the zoom-down operation of the lens barrel 83 is performed by rotating the motor 20 in the CW direction and rotating the first sun gear 30 in the CW direction in FIGS. Due to the rotation, the first gear arm 32 rotates in the CW direction, the projection 32b comes into contact with the locking portion 35a of the first stopper 35, the first planetary gear 31 rotates in the CCW direction, and the third sun gear 60 rotates in the CW direction. The third gear arm 61 rotates in the CW direction, the third gear arm 61 abuts on the positioning member 63, the planetary gear 62 rotates in the CCW direction, and the zoom gear 65 rotates in the CW direction. The frame 83 performs a zoom-down operation (the state of FIG. 6B).
[0087]
When switching to the film winding operation is performed after performing the zoom-up or zoom-down operation, the electromagnet 40 is energized in FIG. 2 and FIG. 6A or FIG. The iron core 40a is sucked and driven to the left. Then, the first stopper 35 is rotated in the CCW direction, and the second stopper 41 is pressed to rotate in the CW direction. With this rotation, the third stopper 72 rotates in the CCW direction (the state of FIG. 8B).
[0088]
At this time, the light-shielding portion 41b of the second stopper 41 enters the stopper PI46 and turns off the signal from on. At this time, if the engaging portion 72b of the third stopper 72 and the convex portion 61b of the third gear arm 61 are attached, or the engaging portion 35a of the first stopper 35 and the convex portion 32b of the first gear arm 32 are attached. If the movable iron core 40a cannot be attracted, the state is detected by the PI 46 not changing from on to off, the energization of the electromagnet 40 is once turned off, and the motor 20 is turned by a predetermined amount in the CW direction and the CCW direction. The sticking is loosened by rotating in the order of the directions, and the movable core 40a is attracted by energizing the electromagnet 40 again.
[0089]
8B, when the motor 20 is rotated in the CCW direction while the electromagnet 40 is energized, the first sun gear 30 rotates in the CCW direction. The first gear arm 32 abuts on the positioning member 33a, and when the first planetary gear 31 rotates in the CW direction, the third sun gear 60 rotates in the CCW direction, and the third gear arm 61 rotates in the CCW direction. .
[0090]
Among the third planetary gears 62 and 62 ′, which are stepped gears, the planetary gear 62 is farther from the zoom gear 65, and when the third gear arm 61 abuts on the positioning member 64, the third planetary gear 62 and the gear 62 ′ are moved. The gear 62 'meshes with the wind gear 70 (the state shown in FIG. 9A).
The amount by which the third planetary gear 62 and the gear 62 'switch from the zoom gear 65 to the wind gear 70 is set by the rotation amount of the motor 20, and after the motor 20 is rotated by the set amount, the electromagnet 40 The energization is turned off (FIGS. 3 and 7A).
[0091]
3A and 7A, when the motor 20 is rotated in the CCW direction, the first sun gear 30 is rotated in the CCW direction, and the first gear arm 32 is rotated in the CCW direction. The portion 32c abuts on the positioning member 33a, the first planetary gear 31 rotates in the CW direction, and the third sun gear 60 rotates in the CCW direction. The third gear arm 61 rotates in the CCW direction, the third gear arm 61 abuts on the positioning member 64, and the third planetary gear 62 and the gear 62 'rotate in the CW direction. The third planetary gear 62 'rotates the wind gear 70 in the CCW direction to wind the film.
[0092]
When switching to the zoom operation after the film winding operation is performed, in FIG. 3 and FIG. 7A, when the motor 20 is rotated in the CW direction, the first sun gear 30 rotates in the CW direction. Then, the first gear arm 32 rotates in the CW direction, the projection 32b of the first gear arm 32 abuts on the locking portion 35a of the first stopper 35, the first planetary gear 31 rotates in the CCW direction, 3. The sun gear 60 rotates in the CW direction.
[0093]
By making the friction torque between the third planetary gear 62 and the gear 62 ′ larger than the torque acting on the third stopper 72 of the torsion spring 42, the third gear arm 61 is rotated when the third sun gear 60 rotates in the CW direction. Rotates in the CW direction while pushing the side surface of the third stopper 72 with the convex portion 61b (the state shown in FIG. 10A). By this rotation, the third stopper 72 rotates in the CCW direction, and the second stopper 41 rotates in the CW direction. When the second stopper 41 rotates in the CW direction, the light blocking portion 41b of the second stopper 41 enters the stopper PI46.
[0094]
When the third gear arm 61 rotates in the CW direction in the state as it is, the third stopper 72 is disengaged from the convex portion 61b of the third gear arm 61, and the second stopper 41 is moved in the CCW direction by the urging force of the torsion spring 42. , The third stopper 72 is rotated in the CW direction.
[0095]
At this time, since the light blocking portion 41b of the second stopper 41 escapes from the stopper PI46, the signal of the PI46 changes from off to on. The rotation of the motor 20 is stopped by detecting this signal (FIG. 6B).
[0096]
When a switching operation for switching from the zoom operation to the set-down operation is performed, after the zoom-down of the lens barrel 83 is completed, the electromagnet 40 is energized to attract the movable iron core 40a in FIGS. The first stopper 35 rotates in the CCW direction, and when the first stopper 35 presses the second stopper 41, the second stopper 41 rotates in the CW direction and the third stopper 72 rotates in the CCW direction (FIG. 8). (B) state).
[0097]
At this time, the light blocking portion 41b of the second stopper 41 enters the stopper PI46, and turns off the signal from on. The convex portion 72b of the third stopper 72 and the convex portion 61b of the third gear arm 61 are attached to each other, or the convex portion 35a of the first stopper 35 and the convex portion 32b of the first gear arm 32 are bent, and the movable core 40a is attracted. If it is not possible, the PI 46 does not change from ON to OFF, so that the state is detected, the energization of the electromagnet 40 is turned off once, and the motor 20 is moved by a predetermined amount in the order of the CW direction and the CCW direction to loosen the sticking. Thereafter, the electromagnet 40 is energized again to attract the movable iron core 40a.
[0098]
When the motor 20 is rotated in the CW direction while the electromagnet 40 is energized in the state of FIG. 8B, the first sun gear 30 rotates in the CW direction. Since there is friction between the third sun gear 60 and the main body, the first planetary gear 31 first rotates around the first sun gear 30 while rotating until it separates from the third sun gear 60 in the CW direction. (FIG. 11A).
[0099]
The friction torque of the third sun gear 60 due to the friction force is set to be larger than the friction torque of the first planetary gear 31.
[0100]
When the first gear arm 32 rotates in the CW direction as shown in FIG. 11A, the signal changes from off to on because the light blocking portion 32d of the first gear arm 32 is separated from the clutch PI34. When the clutch PI 34 receives an ON signal, the electromagnet 40 is turned off while rotating the motor 20 in the CW direction.
When the energization of the electromagnet 40 is cut off, the movable iron core 40a is pushed back by the force of the compression spring 40b, and the locking portion 35a of the first stopper 35 abuts against the side surface of the convex portion 32b of the first gear arm 32 (FIG. )Status).
[0101]
By setting the friction torque of the first planetary gear 31 to be larger than the friction torque acting on the first gear arm 32 of the first stopper 35 by the compression spring 40b and the torsion spring 42, the first gear arm 32 1 The stopper 35 rotates in the CW direction while keeping the stopper 35 against the side surface.
[0102]
Subsequently, since the friction is provided between the gear 36 and the main body as described above, the first planetary gear 31 revolves around the first sun gear 30 in the CW direction while rotating again. When the first gear arm 32 rotates in the CW direction as it is, the locking portion 35a of the first stopper 35 is disengaged from the side surface of the convex portion 32b of the first gear arm 32, and the movable iron core 40a is positioned by the force of the compression spring 40b. , And at the same time, the first stopper 35 is turned in the CW direction.
[0103]
Further, the third stopper 41 and the third stopper 72 are rotated by the force of the torsion spring 42 until the arm 72d comes into contact with the positioning member 73. At this time, since the light blocking portion 41b of the second stopper 41 escapes from the stopper PI46, the signal of the PI46 changes from off to on (the state of FIG. 1 and FIG. 5A). The rotation of the motor 20 is stopped by detecting this signal.
[0104]
When the motor rotates in the CCW direction in FIG. 5A, the first sun gear 30 rotates in the CCW direction, the first gear arm 32 rotates in the CCW direction, and the protrusion 32b abuts against the first stopper 35, When the first planetary gear 31 rotates in the CW direction, and the gears 36 and 37 rotate, the sun gear 38 rotates in the CCW direction, the second gear arm 45 rotates in the CCW direction, and the second gear arm 45 rotates. It contacts the positioning member 44. Then, the planetary gear 47 rotates in the CW direction, and the set gear 48 rotates in the CCW direction, whereby the set-down operation of the lens barrel 83 is performed (the state of FIG. 5B).
[0105]
When performing the switching operation from the set-down operation to the film rewinding operation, the electromagnet 40 is energized to attract the movable iron core 40a in FIGS. 1 and 5B. The first stopper 35 rotates in the CCW direction, and when the first stopper 35 presses the second stopper 41, the second stopper 41 rotates in the CW direction, and the third stopper 72 rotates in the CCW direction. (State in FIG. 8A).
[0106]
At this time, the signal changes from on to off because the light blocking portion 41b of the second stopper 41 enters the stopper PI46. The locking arm 41d of the second stopper 41 and the convex portion 45b of the second gear arm 45 are attached to each other, or the locking portion 35a of the first stopper 35 and the convex portion 32b of the first gear arm 32 are bent, and the movable iron core 40a When the suction is not possible, the PI 46 does not change from ON to OFF to detect the state, the energization of the electromagnet 40 is once turned off, and the motor 20 is moved by a predetermined amount in the order of the CCW direction and the CW direction, and After the loosening, the electromagnet 40 is energized again to attract the movable iron core 40a.
[0107]
In the state of FIG. 8A, when the motor 20 is rotated in the CW direction while the electromagnet 40 is energized, the first sun gear 30 rotates in the CW direction. The first gear arm 32 abuts on the positioning member 33b, and the first planetary gear 31 rotates in the CCW direction, so that the gear 36 rotates in the CW direction, the gear 37 rotates in the CCW direction, and the second sun gear 38 rotates in the CW direction. , The second gear arm 45 rotates in the CW direction.
The second planetary gear 47 separates from the set gear 48, the second gear arm 45 abuts on the positioning member 43, and the second planetary gear 47 meshes with the gear 49 (FIG. 9B). The amount by which the second planetary gear 47 switches from the set gear 48 to the gear 49 is set by the rotation amount of the motor 20, and after the motor 20 is rotated by the set amount, the energization of the electromagnet 40 is stopped (FIG. FIG. 7 (B) state.
[0108]
4A and 4B, when the motor 20 is rotated in the CW direction, the first sun gear 30 rotates in the CW direction, and the first gear arm 32 rotates in the CW direction. The protrusion 32c abuts on the positioning member 33b. The first planetary gear 31 rotates in the CCW direction, the gear 36 rotates in the CW direction, the gear 37 rotates in the CCW direction, and the second sun gear 38 rotates in the CW direction. The second gear arm 45 rotates in the CW direction and contacts the positioning member 43. The second planetary gear 47 rotates in the CCW direction, whereby the gear 49 rotates in the CW direction, the step gears 50 and 50 'rotate in the CCW direction, and the rewind gear 51 provided with a claw for rewinding the film is provided. The film is rewound by rotating in the CW direction.
[0109]
When performing the operation of switching to the set operation after performing the film rewinding operation, the motor 20 is rotated in the CCW direction in FIGS. 4 and 7B. The first sun gear 30 rotates in the CCW direction, the first gear arm 32 rotates in the CCW direction, and the projection 32b of the first gear arm 32 abuts on the locking portion 35a of the first stopper 35. The first planetary gear 31 rotates in the CW direction, the gear 36 rotates in the CCW direction, the gear 37 rotates in the CW direction, and the second sun gear 38 rotates in the CCW direction.
[0110]
Since the friction torque of the second planetary gear 47 is set to be larger than the torque acting on the second gear arm 45 by the torsion spring 42, the second gear arm 45 is rotated as the second sun gear 38 rotates in the CCW direction. Rotates in the CCW direction.
[0111]
When the second gear arm 45 rotates in the CCW direction, the locking arm 41d of the second stopper 41 comes off the projection 45b of the second gear arm 45, and the force of the torsion spring 42 causes the second stopper 41 to move. The third stopper 72 rotates in the CCW direction and in the CW direction.
[0112]
At this time, since the light blocking portion 41b of the second stopper 41 escapes from the stopper PI46, the signal of the PI46 changes from off to on. The rotation of the motor 20 is stopped by detecting this signal (FIG. 1, FIG. 5B).
[0113]
FIG. 15 is a block diagram illustrating a configuration of a control device in a driving device that is a gear coupling device of the camera according to the present embodiment. The configuration will be described with reference to the drawing.
[0114]
The switching requesting means 85, which is one of the elements constituting the present control device, receives signals such as an external switch (for example, a zoom button, a power switch, a rewind switch, etc.) and a film end detection and a rewind end signal from the camera body. Then, a signal indicating a target position for switching the gear drive system of the camera driving device, for example, a set-up / set-down position, a zoom-up / zoom-down position, a film winding position, a film rewinding position, etc., is output to the control means 90. .
[0115]
Similarly, the zoom drive requesting unit 86 receives a signal such as film end detection from the external switch or the camera body and outputs a signal for driving the lens barrel 83 of the camera. For example, when the power switch is detected to be on, a setup operation is performed to drive the lens barrel 83 of the camera from the retracted position to the wide position where the image can be captured. A zoom-up operation or a zoom-down operation between wide and tele is performed in accordance with the direction in which the zoom operation is performed. Further, when the power switch is turned off or the film end is detected, a signal indicating the drive from the photographing state of the camera to the retracted position is output to the control means 90.
[0116]
The gear arm position storage means 87 as the connection arm position storage means stores the current positions of the first, second, and third gear arms 32, 45, and 61 of the camera driving device. The information is updated each time it is completed.
[0117]
The zoom position storage unit 88, which is a driven unit drive state storage unit, stores the current drive state and position of the lens barrel 83 of the camera. For example, the zoom position storage unit 88 stores the lens barrel 83 of the camera in the collapsed position. , A setup completion position, a wide position, a tele position, a position between the wide position and the tele position, and the like. As the driving state of the camera, a current driving state such as zoom-in / down operation, collapsing processing, or the like is stored as a flag. Update.
[0118]
The sticking release constant storage unit 89 as the engagement release constant storage unit stores the first, second, and third gear arms 32, 45 when the electromagnet (described as MG in FIG. 15) is driven to switch gear positions. , 61 and the first, second, and third stoppers 35, 41, 72 are stored with constants for releasing the sticking state. A plurality of constants are provided so that an appropriate one can be selected depending on the positions of the gear arms 32, 45, and 61 and the driving state and position of the lens barrel 83.
[0119]
The gear arm position storage unit 87, zoom position storage unit 88, and sticking release constant storage unit 89 retain their contents even when the camera is powered off. As these storage means, for example, an EEPROM is used.
[0120]
The control unit 90 is constituted by, for example, a CPU, and receives signals from the switching request unit 85, the zoom drive request unit 86, and the like, and performs the following processing.
[0121]
When a signal is received from the switching request unit 85, the switching position of the camera driving device is compared with the current arm position of the camera driving device stored in the gear arm position storage unit 87, and the camera driving device It is determined whether to switch the gear drive system. When switching is performed, control is performed so that the camera driving device is switched to the designated switching position.
[0122]
When a signal is received from the zoom drive requesting unit 86, the motor 20 or the electromagnet 40 (see FIG. 1 and the like) as a drive source that can be rotated forward and backward so as to perform zoom up or down, set up or down according to the request signal And switching of the position detecting means 94 to 97 is controlled.
[0123]
When the gear position is switched by driving the electromagnet 40, the currently engaged gear arm and stopper are released from the zoom information stored in the zoom position storage means 88 and the gear position stored in the gear arm position storage means 87. An appropriate constant is selected from the sticking release constant storage means 89 to release the sticking state between the gear arm and the stopper.
[0124]
When the switching operation and the zoom driving operation are completed, the switched position information of the gear arm, the driving state of the zoom, and the position of the lens frame 83 are written in the gear arm position storage means 87 and the zoom position storage means 88.
[0125]
The motor driving means 91, which is a driving means, drives the motor (denoted by M in FIG. 15) 20, and switches the driving direction of the motor 20 between the CW direction and the CCW direction depending on the direction of the current.
[0126]
The electromagnet driving means 92 drives the electromagnet 40 when it is desired to switch the gear position by pulling up the first stopper 35.
[0127]
The first arm position detecting means 94 determines whether the first gear arm 32 is on the zoom / wind-up side, that is, at a position where the first planet 31 is engaged with the gear 36 (see FIG. 5A), or The return side, that is, whether the first planetary gear 31 is in a position where it meshes with the third sun gear 60 (see FIG. 6A) is detected based on the drive position of the first gear arm 32, and FIG. In A), the clutch PI34 corresponds.
[0128]
When the first gear arm 32 is located on the zoom / wind-up side, the clutch PI34 is turned off (light-shielded). On the other hand, when the first gear arm 32 is located on the set / rewind side, the clutch PI34 is turned on (light-transmitting). ).
[0129]
The motor drive amount detection means 95 outputs a pulse corresponding to the drive amount of the motor 20, and is, for example, a photo interrupter (PI) directly connected to the motor 20, and this is referred to as a motor PI.
[0130]
The stopper position detecting means 96 detects the positions of the first, second, and third stoppers 35, 41, and 72, and corresponds to the stopper PI46 in FIG. 5A. The stopper PI46 is turned off when any of the first, second, and third stoppers 35, 41, and 72 is raised, and when all of the first, second, and third stoppers 35, 41, and 72 are lowered. Turn on.
[0131]
The zoom position detecting means 97 detects the position of the lens frame 83, and corresponds to the reset PR 84 in FIG. This reset PR84 is performed when the silver stickers 83b and 83c affixed to the lens barrel 83 are located below the reset PR84 and the light emitted from the reset PR84 is reflected by the silver stickers 83b and 83c. It turns on and turns off when the silver seals 83b and 83c are not below the reset PR 84 (see FIGS. 12 to 14).
[0132]
In the above description, a PI (photo interrupter) or a PR (photo re- lector) is employed as each of the detection means 94 to 97. However, the present invention is not limited to this. For example, a detection switch or the like may be used. Any sensor may be used as long as it can detect the moving position.
[0133]
The position detection signal selection means 93 outputs the first arm position detection means 94 by the output from the control means 90 in accordance with the control for switching the first, second, and third gear arms 32, 45, and 61 and the zoom drive. The output signal of the motor drive amount detection means 95, the stopper position detection means 96, or the zoom position detection means 97 is switched. The position detection signal selection means 93 and the motor drive amount detection means 95 constitute a motor drive signal output means.
[0134]
The signal processing means 98 processes the outputs of the detection means 94 to 97 and outputs the current drive information of the first, second, and third gear arms 32, 45, 61, or the first, second, and third stoppers. The state of 35, 41, 72, the position of the lens barrel 83, and the amount of zoom drive are fed back to the control means 90.
[0135]
FIG. 16 shows a flowchart of a shooting sequence including drive control after the power of the camera is turned on. The control according to this flowchart is performed on the assumption that a film is already loaded in the camera.
[0136]
The function of each output gear of the driving device is to rewind the film into the cartridge when the rewind gear 51 shown in FIG. 5A rotates in the CW direction.
[0137]
When the set gear 48 rotates in the CW direction, the lens frame 83 performs a set-up operation, and when the set gear 48 rotates in the CCW direction, the lens frame 83 performs a set-down operation.
[0138]
When the zoom gear 65 rotates in the CCW direction, the lens frame 83 performs a zoom-down operation, and when the zoom gear 65 rotates in the CW direction, the lens frame 83 performs a zoom-down operation.
[0139]
Further, when the wind gear 70 rotates in the CCW direction, a film winding operation is performed.
[0140]
As the gear train of the camera driving device in the power off state of the camera, the first gear arm 32 is on the set / rewind side, that is, the position where the planetary gear 31 is engaged with the gear 36, and the second gear arm 45 is The third gear arm 61 is at a position where the planetary gear 62 and the zoom gear 65 are engaged with each other, and the lens frame 83 including the photographing lens of the camera is located inside the camera. It is in a retracted state (see FIG. 12).
[0141]
These pieces of information are stored in the gear arm position detecting means 87 and the zoom position storing means 88.
[0142]
Hereinafter, the drive control of the camera will be described with reference to a flowchart.
[0143]
When the power switch of the camera is turned on, initialization such as initialization of the control means 90 composed of a CPU, checking of a power supply voltage, and calling of EEPROM data is performed (step S99).
[0144]
Then, in order to move the lens barrel 83 from the retracted position to the photographing position, the set gear 48 is switched to a drivable meshing state (see FIG. 5A) (step S100). However, since the planet gear 47 has already meshed with the set gear 48, the operation is not performed again.
[0145]
Subsequently, a setup operation for driving the lens barrel 83 of the camera from the storage position (see FIG. 12) to a position where photographing is possible (see FIG. 13) is executed (step S101).
[0146]
In this process, the motor PI and the reset PR84, that is, the motor drive amount detection means 95 and the zoom position detection means 97 are selected, the motor 20 is driven in the CW direction to extend the lens frame 83, and the signal of the reset PR84 is output. After confirming that the output has changed from off to on, the motor PI is driven until the output stops.
[0147]
When this setup processing is executed, the position information stored in the zoom position storage unit 88 is rewritten from the collapsed state to the setup completed state (capturable state), and the drive information is written as being in the zoom-up operation.
[0148]
After the setup control is completed, a zoom gear switching process is performed to switch the gear drive system to a state in which the gear drive system can be driven to engage with the zoom gear 65 for performing zoom up / down (step S102). This process is a process of switching the first gear arm 32 from the set / rewind side to the zoom / wind side (see FIG. 6A).
[0149]
Then, the lens frame 83 is driven to the wide position to make it possible to shoot (step 103). After performing this processing, the wide position is written in the zoom position storage unit 88 as the position information of the lens barrel 83.
[0150]
Subsequently, various processes are performed according to the switch input of the camera. First, it is determined whether or not the release switch is pressed and an ON signal is detected (step S104), and the ON signal of the release switch is detected. In the case where it has been performed, the photographing and the processing for moving up by one frame are performed in the following steps S105 to S108.
[0151]
That is, when the release switch is detected to be on, the distance to the subject is measured (step S105), the AF lens (focus lens) is extended based on the measured distance data, and the film is exposed by performing the shutter operation (step S105). S106).
[0152]
After the exposure is completed, in order to wind up the film, the state of being engaged with the zoom gear 65 for performing zoom up / down is switched to the state of being engaged with the wind gear 70 for winding up the film (step S107). This process is a process of switching the third gear arm 61 from the zoom side to the winding side (see FIG. 7A).
[0153]
After the switching, the motor 20 is driven in the CCW direction while detecting the film moving amount using a film moving amount detecting photoreflector (hereinafter referred to as WPR, not shown), and the film is moved by one frame. Wind up (step S108).
[0154]
If the operation of the release switch is not detected in step S104, it is determined whether or not the zoom up / down switch (zoom switch) is operated (step S109).
[0155]
If the operation has been performed, the process proceeds to steps S110 and S111. That is, at this time, the gear drive system of the camera driving device is in a meshing state in which the wind gear 70 can be driven (see FIG. 7A), but when the zoom switch is operated, the gear drive system becomes the wind gear. The state of meshing with 70 is switched to the state of meshing in which the zoom gear 65 can be driven (step S110). In this case, the third gear arm 61 is switched from the winding side to the zoom side, that is, the planet gear 62 is engaged with the zoom gear 65 (see FIG. 6B).
[0156]
When the zoom-up switch among the zoom switches is pressed, the motor 20 is driven in the CCW direction to perform a zoom-up operation. On the other hand, when the zoom-down switch is pressed, the motor 20 is moved in the CW direction. The motor 20 is driven to perform zoom-down, and the driving of the motor 20 is continued until the zoom switch is turned off or reaches the tele / wide position (step S111).
[0157]
At this time, the wide position, the tele position, the position information between the wide position and the tele position, and the zoom up / down information are written in the zoom position storage means 88 in accordance with the on / off state of the zoom switch.
[0158]
If any of the above steps S108 and S111 is completed, or if the zoom switch is off in step S109, one of the power switch off detection, the film end detection, and the forced rewind switch on detection is performed. It is determined whether or not the process has been performed (step S112). If not detected, the process returns to step S104 to repeat the above process.
[0159]
On the other hand, if any of the detection of the power switch OFF, the detection of the film end, and the detection of the ON of the forced rewind switch is performed, the following steps S113 to S113 are performed to execute the process of retracting the lens barrel 83. Proceed to 116.
[0160]
First, the gear drive system of the camera driving device is switched to a state in which it is engaged with the zoom gear 65 capable of zooming up / down (step S113). If the zoom gear 65 has already been engaged according to the gear state at the time of the determination in step S104, no operation is performed.
[0161]
Subsequently, the motor 20 is driven in the CW direction to a position where the lens barrel 83 can be retracted (see FIG. 13), and the zoom is reduced until the output of the motor PI stops (step S114).
[0162]
When the zoom-down process is completed, the gear drive system is switched from a state meshed with the zoom gear 65 to a state meshed with the set gear 48 in order to retract the lens barrel 83 (step S115). In this case, the first gear arm 32 is switched from the wind / zoom side to the set / rewind side, that is, the planet gear 31 is switched so as to mesh with the gear 36 (the state of FIG. 5A).
[0163]
In this state, the motor 20 is driven in the CW direction to retract the lens barrel 83 (step S116). When the collapse of the lens frame 83 is completed, the information in the zoom position storage means 88 is rewritten from the setup completed state to the collapsed state.
[0164]
Subsequently, it is determined whether or not a rewind request has been issued by detecting the end of the film while the film is being wound or by pressing the forced rewind switch (step S117). The processing according to this flowchart ends.
[0165]
On the other hand, when a rewind request is issued, the gear drive system is switched from a state meshing with the set gear 48 to a state in which the rewind gear 51 can be driven to rewind the film (step S118). This processing operation is a switching operation in which the second gear arm 45 is rotated to mesh the planetary gear 47 from the set gear 48 with the gear 49 of the rewinding system (FIG. 7B).
[0166]
When it is detected that the planetary gear 47 has meshed with the rewinding gear 49, the WPR is detected, and the motor 20 is driven in the CW direction until the output of the WPR disappears to rewind the film (step S119).
[0167]
When the rewinding of the film is completed, the second gear arm 45 is moved so that the planetary gear 47 separates from the gear 49 of the rewinding gear system and meshes with the set gear 48 so that the gear drive system is engaged with the set gear 48. Switching is performed (see FIG. 5A) (step S120).
[0168]
After rewinding, it is determined whether or not the user has taken out the film and loaded a new film into the camera (step S121). If the film has not been reloaded, the process according to this flowchart ends.
[0169]
On the other hand, if the film has been reloaded, the subsequent steps S122 to S124 are performed in order to perform preliminary winding.
[0170]
That is, when it is detected that the film is reloaded in the camera, the first gear arm 32 is first set from the set / rewind side so that the gear drive system is engaged with the wind gear 70 in order to wind the film. After switching to the zoom / winding side, the third gear arm 61 is switched from the zoom side to the winding side (step S122).
[0171]
After the switching, the motor 20 is driven in the CCW direction while referring to the output of the WPR to perform a preliminary winding of winding the film by a predetermined number of frames (step S123).
[0172]
When the preliminary winding is completed, the third gear arm 61 is switched from the winding side to the zoom side so that the gear drive system meshes with the set gear 48, and then the first gear arm 32 is set / winded from the zoom / winding side. The routine is switched to the return side (step S124), and this routine ends.
[0173]
Next, detailed control of each switching process called in the shooting sequence including the drive control in FIG. 16 will be described.
FIG. 17 is a flowchart showing the flow of the gear switching control.
[0174]
As described with reference to FIG. 16, when an instruction to switch each output gear to a drivable state, such as set gear switching, rewind gear switching, zoom gear switching, or wind gear switching, is issued according to the current camera state or switch input. The routine shown in FIG. 17 is called.
[0175]
Then, drive target positions of the first, second, and third gear arms 32, 45, and 61 are set (step S127).
[0176]
That is, the target positions of the first, second, and third gear arms 32, 45, and 61 are first set / rewinded with respect to the first gear arm 32 when it is desired to switch to a meshing state in which the set gear 48 can be driven. The side, that is, the position rotated so as to mesh with the gear 36 is set as the target position. Further, a position rotated to a state where the second gear arm 45 meshes with the set gear 48 and a position rotated to a state where the third gear arm 61 meshes with the zoom gear 65 are set as target positions. .
[0177]
Next, when it is desired to switch the rewind gear 51 to a drivable state, first, the position rotated to the set / rewind side with respect to the first gear arm 32, that is, the state in which the first gear arm 32 meshes with the gear 36, is further moved to the second position. The position rotated to mesh with the rewinding gear 49 with respect to the second gear arm 45 and the state rotated meshing with the zoom gear 65 with respect to the third gear arm 61 are respectively set as target positions. Set.
[0178]
Further, when the user wants to switch the zoom gear 65 to a drivable meshing state, the position of the first gear arm 32 that has been rotated to the zoom / wind-up side, that is, the state where the zoom gear 65 meshes with the third sun gear 60, is set to the second gear arm The position rotated to a state where it meshes with the set gear 48 is set as the target position, and the position rotated until it meshes with the zoom gear 65 is set as the target position for the third gear arm 61.
[0179]
When the user wants to switch the wind gear 70 to the drivable meshing state, the position of the first gear arm 32 that has been rotated to the zooming / winding side, that is, the state of meshing with the third sun gear 60, With respect to the second gear arm 45, the position rotated to a state where it meshes with the set gear 48 is set as the target position, and with respect to the third gear arm 61, the position rotated until it meshes with the wind gear 70 is set as the target position.
[0180]
However, when the set gear 48 is to be switched to the meshing state, if the gear train is currently meshing with the wind gear 70, the zoom gear 65 is first switched to the meshing state (steps S125 and S126).
[0181]
Next, after the target setting process is performed in step S127, the current arm position stored in the gear arm position storage unit 87 of the EEPROM and the actual position that can be detected by the two position detection units of the stopper PI46 and the clutch PI34. Are compared with each other (step S128).
[0182]
That is, the state currently stored in the EEPROM data is as follows:
In the case of switching to the set gear 48 side, the state of the clutch PI34 must be on and the state of the stopper PI46 must be on.
In the case of switching to the rewind gear 51 side, the state of the clutch PI34 must be on and the state of the stopper PI46 must be off.
When switching to the zoom gear 65 side, the state of the clutch PI34 must be off and the state of the stopper PI46 must be on.
In the case of switching to the wind gear 70 side, the state of the clutch PI34 must be off and the state of the stopper PI46 must be on.
[0183]
If the correspondence between the stored arm position information and the states of the PIs 34 and 46 is not correct, the gear meshing state is initialized, the set gear 48 is meshed, and the lens frame 83 is closed. Is retracted (step S129).
[0184]
Thereafter, it is determined whether or not the lens frame 83 is retracted (step S130). If the lens frame 83 is in a photographable state before gear initialization described later is performed, the lens frame 83 is removed. It is driven to the wide position (step S131).
[0185]
After step S131 is completed, or when the lens barrel 83 is retracted in step S130, an initialization process for initializing RAM data necessary for control and setting interrupts is performed (step S130). S132).
[0186]
Subsequently, when it is desired to switch the gear drive system to the set gear 48 or the rewind gear 51 side, control is performed to switch the first gear arm 32 from the zoom / wind-up side to the set / rewind side meshing state. If it is desired to switch to the zoom gear 65 or the wind gear 70, control is performed to switch the first gear arm 32 from the set / rewind side to the meshing position on the zoom / wind side (step S133).
[0187]
After the switching of the first gear arm 32 is completed, the rotation of the second gear arm 45 or the third gear arm 61 is controlled to a position where it meshes with the respective target gear.
[0188]
Therefore, it is determined whether the first gear arm 32 has been switched to the set / rewind side or the zoom / wind side (step 134).
[0189]
When the target position of the first gear arm 32 is the switching position to the set / rewind side (in FIG. 17, described as S / R side), it is desired to switch to the set gear 48 side or to the rewind gear 51 side. Is determined (step S135).
[0190]
When switching to the set gear 48 side, the second gear arm 45 is controlled to rotate to a position where it meshes with the set gear 48 (step S136), and when switching to the rewind gear 51 side, the second gear arm 45 is engaged with the gear 49. (Step S137).
[0191]
On the other hand, when the target position of the first gear arm 32 is the switching position to the zoom / wind-up side, the third arm 61 is rotated to the position where it meshes with the zoom gear 65 or the wind gear 70 according to the target position information. Control is performed (steps S138 to S140).
[0192]
The gear switching control is completed by the processing described above.
[0193]
If the first gear arm 32 moves due to an impact on the camera during the switching control of the second gear arm 45 or the third gear arm 61, it may cause a malfunction after the gear is switched, so that the clutch PI 34 Then, it is checked whether the rewritten position information of the first gear arm 32 is equal to the state detected by the clutch PI34 (steps S141 and S142).
[0194]
If the state detected by the clutch PI34 is different from the position information of the first gear arm 32, the process jumps to damage as an error process.
[0195]
On the other hand, if the information matches in step S142, a battery check is performed (step S143), the state of the gear train last switched is written in the EEPROM (step S144), and the routine ends.
[0196]
FIG. 18 is a flowchart showing the switching control of the first gear arm 32, which is a subroutine called in step S133 of FIG.
[0197]
In this routine, when it is desired to switch the first gear arm 32 to the S / R side, that is, to the set / rewind side, when the first gear arm 32 is already located on the S / R side, If it is desired to switch to the W / Z side, that is, to the wind / zoom side, and if the first gear arm 32 is already located at the W / Z side at present, there is no need to switch the first gear arm 32. The process ends (steps S145 to S147).
[0198]
The first gear arm 32 needs to be rotated in a state other than the above-described state. However, as described above, the first gear arm 32 is locked by the first stopper 35. To rotate the first gear arm 32, the electromagnet 40 must be turned. It is necessary to turn it on and pull up the first stopper 35.
[0199]
Therefore, a process of pulling up the first stopper 35 by performing the loosening drive is performed (step S148).
[0200]
Depending on the driving condition of the camera before the gear change is performed, the state of gear engagement varies.
[0201]
When the current position of the first gear arm 32 is on the set / rewind side, after the motor 20 is driven in the CCW direction, the first stopper 35 and the first gear arm 32 drive the motor 20 in the CW direction. After that, the second stopper 41 and the second gear arm 45 are attached to each other.
[0202]
When the position of the first gear arm 32 is currently on the zoom / wind-up side, after the motor 20 is driven in the CCW direction, the third stopper 72 and the third gear arm 61 drive the motor 20 in the CW direction. After that, the first stopper 35 and the first gear arm 32 are attached to each other.
[0203]
In order to release the sticking, the motor 20 is driven in the direction in which the first gear arm 45 or the third gear arm 61 can be released until a predetermined number of pulses are detected by the motor PI. .
[0204]
Since this driving direction is equal to the direction in which the first gear arm 32 is engaged, the motor 20 is then driven by the number of pulses of the motor PI that releases the first gear arm 32 from sticking.
[0205]
The number of release pulses at this time is
Number of disengagement pulses of second gear arm 45 or third gear arm 61
> Number of disengagement pulses of first gear arm
It is necessary to determine within the range where the relationship holds.
[0206]
Therefore, the number of clinging release pulses is selected from the clinging release constant storage means 89 in accordance with the driving condition of the camera and the gear position. The selection and type of the number of stuck release pulses will be described later.
[0207]
After driving by a predetermined pulse, the magnet 40 is turned on at the full voltage, and the third stopper 72 is pulled up. When the third stopper 72 is pulled up, the state of the stopper PI46 is turned off. Therefore, after detecting the off state, the drive voltage of the electromagnet 40 is switched to the minimum holding voltage.
[0208]
In this state, the first stopper 35 is surely pulled up, and the first gear arm 32 can rotate (see FIG. 8A or FIG. 8B).
[0209]
Subsequently, a limiter is set to the detection time of the clutch PI34 (step S149), and the clutch PI34 is selected as the position detecting means of the first gear arm 32, and the on / off state is set (step S150).
[0210]
In step S147, when the first gear arm 32 is switched from the set / rewind side to the zoom / winding side, the motor 20 is moved in the CCW direction. In step S146, the first gear arm 32 is set / winded from the zoom / winding side. When switching to the return side, the motor 20 is driven in the CW direction by duty driving that repeats ON and OFF at intervals of a predetermined cycle until the state of the clutch PI34 changes (step S151).
[0211]
Then, it is determined whether a predetermined time has elapsed (step S152). If no change in the clutch PI34 is detected even after the predetermined time has elapsed, it is determined that an error has occurred, and the process jumps to damage processing.
[0212]
If the predetermined time has not elapsed, it is detected whether or not the clutch PI34 has changed (step S153), and if not, the process returns to step S151.
[0213]
On the other hand, when a change in the clutch PI34 is detected, the electromagnet 40 is turned off (step S154), and the drive voltage of the motor 20 is set to a predetermined value (step S155).
[0214]
Even when the electromagnet 40 is turned off as shown in FIG. 11B, the first stopper 35 rides on the first gear arm 32, and the stopper PI 46 remains off (light-shielded).
[0215]
Therefore, the detection means selected by the position detection signal selection means 93 is switched from the clutch PI34 as the first arm position detection means 94 to the stopper PI46 as the stopper position detection means 96 (step S156). Then, the limiter is set to the time detected by the stopper PI46 (step S157), and the motor 20 starts to be driven in the same direction as described above (step S158).
[0216]
Then, it is determined whether a predetermined time has elapsed (step S159). If it is determined that fall detection of the stopper PI46 cannot be obtained even after the predetermined time has elapsed, it is determined that a gear switching error has occurred and damage is detected. Jump to processing.
[0217]
If the predetermined time has not elapsed, the fall of the stopper PI46 is detected (step S160). If the fall is not detected, the process returns to step S151.
[0218]
On the other hand, when the fall of the stopper PI46 is detected, the brake is applied to the motor 20 at the end of the gear change (step S161).
[0219]
After confirming that the motor 20 has stopped, the information on the first gear arm 32 is updated to indicate that the switching has been completed (step S162), and this routine ends.
[0220]
FIG. 19 is a flowchart of the process of switching the second gear arm 45 from the rewind position to the set position (switching from the state of FIG. 10B to the state of FIG. 5A) called in step S136 of FIG.
[0221]
First, when the second gear arm 45 is switched to the state of meshing with the set gear 48, it is determined whether the second gear arm 45 is already meshed with the set gear 48 (step S163). Terminates this routine without doing anything (state of FIG. 5A).
[0222]
On the other hand, when the second gear arm 45 is at the position where the second gear arm 45 is engaged with the rewinding gear 49, the stopper PI46 which is in the light-shielded and off state is selected as the position detecting means (step S164).
[0223]
Next, a guard timer (limiter) for the switching time is set (step S165).
[0224]
Then, the motor 20 is set to a predetermined constant voltage and driven in the CCW direction (step S166). Thus, the second gear arm 45 is driven in the CCW direction.
[0225]
Subsequently, it is determined whether a predetermined time has elapsed (step S167). If the fall detection of the stopper PI46 is not obtained within the predetermined time, that is, if a detection signal from off to on is not obtained, the switching is performed. It is determined that it is a failure, and it is determined whether it is the first time (step S168). If it is the first time, the process returns to step S163 to retry, and if it is the second time, the process jumps to the damage process.
[0226]
If the predetermined time has not yet elapsed in step S167, it is determined whether or not the fall (off to on) of the stopper PI46 has been detected (step S169). If not, the process returns to step S166. .
[0227]
When the fall of the stopper PI46 is detected, the motor 20 is braked and stopped (step S170). Finally, the position information on the second gear arm 45 is updated (step S171), and this routine ends.
[0228]
FIG. 20 is a flowchart of the control for switching the second gear arm 45 from the set position to the rewind position (switching from FIG. 5A to FIG. 10A) called in step S137 of FIG.
[0229]
First, when switching the position of the second gear arm 45 to a position where the rewind gear 51 can be driven, it is determined whether or not the second gear arm 45 is already in a state where the rewind gear 51 can be driven (step S172). If it is possible, this routine is terminated without doing anything.
[0230]
Further, when the second gear arm 45 is not in the drivable state, an operation of switching the second gear arm 45 to the rewind drivable state is performed. At this time, the second gear arm 45 is locked by the second stopper 41. Therefore, it is necessary to first turn on the electromagnet 40 to release the locked state of the second gear arm 45. For this purpose, the loose driving is performed, the electromagnet 40 is turned on, and the stopper PI46 is turned off.
[0231]
That is, before the above-described loosening operation is performed, either the second gear arm 45 and the second stopper 41 or the first gear arm 32 and the first stopper 35 are attached. In order to release the sticking, the motor PI is driven in the CCW direction by a predetermined number of pulses by the motor PI, and then driven in the CW direction to energize the electromagnet 40 to detect the state of the stopper PI 46 ( Step S173).
[0232]
After detecting that the stopper PI 46 is turned off, the motor PI is selected as the position detecting means, and the driving amount of the motor 20 is detected (step S174).
[0233]
Next, a limiter is set to a time until the switching operation to the rewind gear 51 ends (step S175).
[0234]
Then, duty driving is performed to turn the motor 20 on and off in the CW direction at a predetermined cycle while the electromagnet 40 is on (step S176).
[0235]
Subsequently, it is determined whether or not a predetermined time has elapsed (step S177). If the predetermined time has elapsed, the process jumps to step S179, which will be described later. It is determined whether the output of the PI has been detected (step S178).
[0236]
If the number of switching pulses has not been reached, the process returns to step S176. If it is detected that the motor 20 has been driven by the number of switching pulses, the energization of the electromagnet 40 is turned off (step S179), and the motor brake 20 is stopped (step S180).
[0237]
Then, after the motor 20 stops, the stopper PI46 is selected as a position detecting means (step S181), and the state of the stopper PI46 is detected (step S182).
[0238]
If the stopper PI46 is on, it is considered that the stopper has dropped during the gear change, so it is determined whether or not it is the second time (step S183). Returning to S172, the switching operation is performed again, and if it is the second time, the process proceeds to damage processing.
[0239]
If it is determined in step S182 that the stopper PI 46 is off (light-shielded), the position information relating to the second gear arm 45 is updated (step S184), and this routine ends.
[0240]
FIG. 21 is a flowchart showing the control for switching the third gear arm 61 from the wind position to the zoom position (switching from FIG. 7A to FIG. 6A), which is called in step S139 of FIG.
[0241]
When this operation starts, first, it is determined whether or not the third gear arm 61 is at a position where it has already meshed with the zoom gear 65 (step S185). If the third gear arm 61 has already meshed, this routine is immediately terminated.
[0242]
If not engaged, the stopper PI 46 is selected as a position detecting means for switching control (step S186), and a motor drive voltage for driving the third gear arm 61 is set (step S187).
[0243]
The limiter is set to a time until the third gear arm 61 finishes switching from the wind position to the zoom position (step S188).
[0244]
The motor 20 is driven in the CW direction at the set drive voltage (step S189), and it is determined whether or not the time has reached the set limiter (step S190), and it is determined that the set time has been exceeded. Then, the processing shifts to the damage processing.
[0245]
When the third gear arm 61 is at a position where it meshes with the wind gear 70, the stopper PI46 is in an ON state.
[0246]
The third gear arm 61 raises the third stopper 72 by driving the motor 20 in the CW direction. When the third gear arm 61 rotates to a predetermined position, a rise is obtained in which the output of the stopper PI46 changes from ON (light transmission) to OFF (light shielding).
[0247]
It is detected whether or not this rise has been obtained (step S191). If not, the process returns to step S189.
[0248]
When it is detected that the stopper PI 46 has been turned off, the motor 20 is further driven in the CW direction (step S192).
[0249]
Subsequently, it is determined whether or not the time has reached a set time (step S193). If it is determined that the set time has been exceeded, the process proceeds to damage processing.
[0250]
When the third gear arm 61 reaches the position of the zoom gear 65, the stopper falls, and the falling of the stopper PI46 (change from off to on) is obtained.
[0251]
Therefore, if it is within the set time in step S195, it is detected whether or not this fall has been obtained (step S194). If not, the process returns to step S192.
[0252]
If the fall of the stopper PI46 is detected, the motor 20 is braked and stopped (step S195).
[0253]
Finally, the position information of the third gear arm 61 is updated (step S196), and the processing of this routine is ended.
[0254]
FIG. 22 is a flowchart showing the control of switching the third gear arm 61 from the zoom position to the wind position (switching from FIG. 6A to FIG. 7A) called in step S140 of FIG.
[0255]
When switching the third gear arm 61 to the position where it meshes with the wind gear 70, it is determined whether or not the third gear arm 61 is already at the position where it meshes with the wind gear 70 (step S197). End the routine.
[0256]
When the third gear arm 61 is not engaged yet, the third gear arm 61 is locked by the third stopper 72 so that the third gear arm 61 is not switched to the position engaged with the wind gear 70 even when the motor 20 is driven in the CCW direction. Therefore, when switching the third gear arm 61 from the zoom position to the wind position, it is necessary to release the locking of the third gear arm 61 by turning on the electromagnet 40.
[0257]
Therefore, first, the electromagnet 40 is turned on by the loosening drive, and the off detection of the stopper PI46 by the release of the stopper is detected (step S198).
[0258]
Before executing the above-described loosening drive, either the third gear arm 61 and the third stopper 72 or the first gear arm 32 and the first stopper 35 are stuck. In order to release the sticking, the motor 20 is driven in the CW direction by a predetermined number of pulses with the output of the motor PI, and then driven in the CCW direction.
[0259]
After the electromagnet 40 is energized, the state of the stopper PI46 is detected, and after detecting that the stopper PI46 has been turned off, the motor PI is selected as the position detecting means, and the driving amount of the motor 20 is detected (step S199). ).
[0260]
Next, a limiter is set to the time until the third gear arm 61 switches from the zoom position to the wind position (step S200).
[0261]
While the electromagnet 40 is energized, duty driving is performed by turning the motor 20 on and off at a predetermined cycle in the CCW direction (step S201).
[0262]
Then, it is determined whether a predetermined time has elapsed (step S202). If the switching end pulse is not output within the predetermined time, it is determined that the gear switching has failed, and the process jumps to the damage processing.
[0263]
If it is still within the predetermined time, it is determined whether or not it has been driven by the number of pulses required for gear switching set in advance (step S203), and if not, the process returns to step S201.
[0264]
On the other hand, when driving is performed for the required number of pulses, the electromagnet 40 is turned off (step S204). After the electromagnet 40 is turned off, the position detecting means is switched from the motor PI to the stopper PI46 in order to detect the state of the stopper (step S205).
[0265]
The on / off duty driving of the motor 20 is continued (step S206), and it is determined whether a predetermined time has elapsed (step S207). If the predetermined time has not been reached, the process jumps to damage processing.
[0266]
When the third gear arm 61 is switched to the wind position, at this time, the first, second, and third stoppers 35, 41, and 72 have fallen, and the output of the stopper PI46 has switched from off to on.
[0267]
In step S207, when it is detected that the time is still within the predetermined time, a change in the output of the stopper PI 46 is determined (step S208). When the output remains off, the process returns to step S206.
[0268]
On the other hand, when the output of the stopper PI46 is turned on, the motor 20 is braked and stopped (step S209).
[0269]
Finally, the position information of the third gear 61 is updated (step S210), and this routine ends.
[0270]
Next, the above-described loosening control will be described in detail. Table 1 shows the types of clinging release pulses (hereinafter abbreviated as "loose pulses") stored in the clinging release constant storage means 89 and their outlines.
[0271]
[Table 1]

In Table 1, when the first gear arm 32 is on the set / rewind side, the slack A indicates a gear position at which zoom up / down is possible from a gear position at which setup / down is possible (FIG. 5A) (FIG. 6 (A)). The second stopper 41 is used to turn on the electromagnet 40 either when switching to the gear position A)) or when switching from the gear position where setup / down is possible to the gear position where rewinding is possible (FIG. 7B). And release the sticking of the second gear arm 45.
[0272]
After the setup operation is performed in step S101 in FIG. 16, the process is executed when switching to the zoom gear 65 in step S102, and the second stopper 41 in the activated state is driven by driving the motor 20 in the CW direction in the setup operation. The second gear arm 45 is released by driving the motor 20 in the CCW direction by the amount of the loose A pulse.
[0273]
Further, when switching from the set gear 48 to the rewind gear 51 before executing the rewinding process in step S119, or when switching to the zoom gear 65 in the middle of switching to the wind gear 70 before executing the preliminary winding process in step S123. By driving the motor 20 in the CCW direction by the amount of the loosening A pulse, the position of the second gear arm 45 is brought into contact with the positioning member 44 to ensure the gap between the second stopper 41 and the second gear arm 45. .
[0274]
Next, when the first gear arm 32 is on the zoom / wind-up side, the slack A 'is shifted from the gear position at which zoom-up / down is possible (FIG. 6A) to the wind-up position (FIG. 9A). When the gear position is switched to the gear position, or when the gear position is switched from the gear position where zoom up / down is possible to the gear position where setup / down is possible, the engagement between the third stopper 72 and the third gear arm 61 is released.
[0275]
That is, after performing the zoom-up operation in step S111 of FIG. 16, when the release switch is turned on and the winding-up of one frame is performed in step S108, the motor 20 is driven by CCW in the zoom-up operation when switching to the wind gear 70. The sticking between the third stopper 72 and the third gear arm 61 caused by driving in the direction is released by driving the motor 20 in the CW direction by the amount of the loosening A 'pulse.
[0276]
Further, when switching to the wind gear 70 in step S122 before performing the preliminary winding process in step S123, or when switching from the wind gear 70 to the set gear 48 in step S124 after performing the preliminary winding process, the motor is moved by an amount corresponding to the slack A 'pulse. By driving the motor 20 in the CW direction, the position of the third gear arm 61 meshes with the zoom gear 65 to ensure a gap between the third stopper 72 and the third gear arm 61.
[0277]
When the looseness B is performed by executing the above-described looseness A to release the sticking between the second stopper 41 and the second gear arm 45 (driving the motor 20 in the CCW direction) or executing the set-down operation, the first gear arm 32 is released. And the first stopper 35 (see FIG. 5B), the number of pulses for releasing the sticking is set as a slack B, and three types (in accordance with the position and driving state of each member in the camera) are used. (Slack B1, B2, B3).
[0278]
First, the slack B1 is caused by driving the motor 20 in the CCW direction by the amount of the slack A pulse when the lens frame 83 of the camera is set up from the collapsed position in the zoom gear switching in step S102 shown in FIG. This is the number of pulses for releasing the sticking between the first gear arm 32 and the first stopper 35 that has occurred.
[0279]
The slack B2 occurs when the first gear arm 32 is switched from the set gear 48 to the zoom gear 65 in the wind gear switching in step S122 shown in FIG. 16 (step S133 in FIG. 17), or when the camera is in the collapsed position in step S118 in FIG. When switching to the rewind gear 51, a pulse for releasing the mechanical deflection caused by driving the motor 20 in the CCW direction by the amount of the pulse of the slack A and the sticking between the first gear arm 32 and the first stopper 35. Is a number.
[0280]
When the motor 20 is driven in the CCW direction and the lens barrel 83 is retracted in the set-down operation in step S116 in FIG. 16, the first gear arm 32 and the first stopper 35 are in a loose state. This is the number of pulses for releasing the sticking state because the gear may be deformed if the first gear arm 32 and the first stopper 35 are left in a state where a force is applied.
[0281]
When the looseness A 'is executed to release the sticking between the third stopper 72 and the third gear arm 61 or to execute the zoom-down operation (by driving the motor 20 in the CW direction), the first gear arm 32 is released. And the first stopper 35 is in a state of being engaged (see FIG. 6B). In order to cancel this state, the number of pulses for driving the motor 20 in the CCW direction is set. Four types (slack B1 ', slack B2', slack B3 ', slack B4') are set according to the driving situation.
[0282]
The looseness B1 'is obtained when the gear drive system is switched from the zoom gear 65 to the set gear 48 in step S120 after the rewind operation in step S119 shown in FIG. 16 is performed, or before the preliminary winding operation in step S123 is performed. When switching from the set gear 48 to the wind gear 70, the lens frame 83 is in the collapsed state, and when switching from the zoom gear 65 to the wind gear 70, the first gear arm 32 and the first This is to release the sticking of the stopper 35.
[0283]
The slack B2 'is used to engage the third planetary gear 62 of the third gear arm 61 with the zoom gear 65 when the camera lens barrel 83 is in the collapsed state and re-initialization (initialization of the gear position) is performed. This releases the sticking between the first gear arm 32 and the first stopper 35 caused by driving the motor 20 in the CW direction.
[0284]
The loosening B3 'is performed during the switching operation (step S107 in FIG. 16) when the zoom-up / down operation of the lens barrel 83 is repeated in the photographing area, the release switch is turned on to expose the film, and the winding operation is performed. After executing the selected zoom-up operation, the first stopper 35 and the first gear arm 32 generated by executing the above-described loosening A 'are disengaged from each other, and after executing the zoom-down operation, the zoom-down operation is performed. This is to release the sticking between the first gear arm 32 and the first stopper 35 generated by the operation.
[0285]
The slack B4 'is selected when the lens frame 83 is zoomed down and applied to the set gear 48 in step S115 in FIG. This is to release the deflection and the sticking between the first gear arm 32 and the first stopper 35.
[0286]
Next, Table 2 shows a method of selecting a loosening pulse depending on the position of the first gear arm 32, the position of the lens barrel 83, and the driving state.
[0287]
[Table 2]

When the first gear arm 32 is on the set / rewind side and the lens barrel 83 has completed the setup, the loosening A and the loosening B1 are selected as shown in Table 2 (1). This corresponds to the switching in step S102 in FIG.
[0288]
When the first gear arm 32 is on the zoom / wind-up side, the lens barrel 83 is located between wide and tele, and the zoom drive is zoomed up, as shown in Table 2 (2), the slack A ', Select the loose B3 '.
[0289]
When the zoom drive is zoomed down by the same position information, as shown in Table 2 (3), the slack B3 'is selected (because the zoom-down operation plays the role of the slack A'). This corresponds to the switching in step S107 in FIG.
[0290]
When the first gear arm 32 is on the zoom / wind-up side and the lens barrel 83 has completed the setup, and the zoom drive is a zoom-down operation, as shown in Table 2 (4), the looseness B4 'is reduced. select.
[0291]
Similarly, when the first gear arm 32 is on the zoom / wind-up side and the lens frame 83 is retracted and the driving of the zoom is a zoom-down operation, as shown in Table 2 (5), the slackness is reduced. Select B2 '. This corresponds to the switching in step S115 in FIG.
[0292]
When the lens frame 83 is retracted on the set / rewind side of the first gear arm 32, the loosening A and the loosening B2 are selected as shown in Table 2 (6). This corresponds to switching the first gear arm 32 from the set / rewind side to the zoom / wind-up side in switching between step S118 and step S122 in FIG.
[0293]
When the first gear arm 32 is located on the zoom / wind-up side and the lens barrel 83 is retracted, as shown in Table 2 (7), the slack A 'and the slack B1' are selected. This corresponds to the switching of the first gear arm 32 from the zoom / wind-up side to the set / rewind side in step S120 of FIG. 16 and the switching of the third gear arm 61 from the zoom gear 65 to the wind gear 70 in step S122.
[0294]
FIG. 23 is a flowchart showing the loosening control.
[0295]
First, it is determined whether to execute the loosening A or the loosening A '(step S211). If the zoom-down operation is performed immediately before the switching operation is performed, the stuck state between the second gear arm 45 and the second stopper 41 or the third gear arm 61 and the third stopper 72 has already been released. The process skips the next process and goes to step S214 to be described later to execute the loosening B or the loosening B '.
[0296]
If it is determined that the slack A or the slack A 'is to be executed, the slack A is selected when the position of the first gear arm 32 is on the set / rewind side, and the driving direction of the motor 20 is set in the CCW direction. If it is located on the zoom / wind-up side, the slack A 'is selected and the driving direction of the motor 20 is set in the CW direction (step S212).
[0297]
Then, the motor 20 is driven in the predetermined direction by the set number of pulses to release the sticking between the second gear arm 45 and the second stopper 41 or between the third gear arm 61 and the third stopper 72 (step S213).
[0298]
Subsequently, in order to release the sticking of the first gear arm 32 and the first stopper 35 caused by the execution of the slacks A and A 'or the zoom-down operation, the slack B based on the gear position and the zoom information as described above. Or, select slack B '. When the slack B is selected, the motor 20 is set to be driven in the CW direction, and when the slack B 'is selected, the motor 20 is set to be driven in the CCW direction (step S214).
[0299]
Next, it is determined whether or not the loosening operation for releasing the sticking is a retry (step S215). If it is the first time, the process jumps to step S217 to be described later. The number of pulses of the slack B or the slack B 'is increased by a predetermined pulse in accordance with the number of retries (step S216).
[0300]
This is because it is considered that the reason why the first stopper 35 did not pull up is that the above constant is not enough to release the sticking.
[0301]
Then, by driving the motor 20 by a predetermined pulse, the sticking between the first gear arm 32 and the first stopper 35 is released (step S217).
[0302]
When the operation of the loosening control is completed, the electromagnet 40 is energized, and the first stopper 35 is pulled up (step S218).
[0303]
Then, it is determined whether or not the first stopper 35 has been pulled up (step S219). If the first stopper 35 has not been pulled up (that is, if the signal of the stopper PI 46 has not changed), the control unit 30 determines whether or not the first stopper 35 has been pulled up. The energization is turned off (step S220), and it is determined whether or not the retry count limiter has been activated (step S221).
[0304]
If the first stopper 35 does not rise even after retrying the predetermined number of times, the process proceeds to the damage process. If the number has not yet reached the predetermined number, the process returns to the step S212 to retry from the slack A, A '.
[0305]
In addition, when the first stopper 35 is pulled up in step S219, the stopper PI46 switches from on to off. When the stopper PI 46 is switched in this way, this routine is terminated while the electromagnet 40 is energized.
[0306]
FIG. 24 shows a flowchart of the collapsing processing control.
[0307]
The control according to this flowchart starts when replacement of the battery of the camera or turning off of the power switch is detected.
[0308]
First, in the initial setting (step S222), the gear arm position information and the zoom position information stored in the gear arm position storage means 87 and the zoom position storage means 88 of the EEPROM are called, and the initial setting of the control means 90 constituted by the CPU is performed. Then, the position information of the first gear arm 32 is viewed, and the first gear arm 32 is initialized so as to mesh with one of the set / rewind side and the zoom / wind-up side.
[0309]
Then, it is determined whether the first gear arm 32 is located on the set / rewind side or the zoom / rewind side (step S223). If the first gear arm 32 is on the set / rewind side, the set-down operation is performed until a contact is made. Then, the second gear arm 45 is initialized so as to mesh with the set gear 48 (step S224).
[0310]
After the contact is detected, the first gear arm 32 is switched from the set / rewind side to the zoom / wind-up side (step S225).
[0311]
If the first gear arm 32 is located on the zoom / wind-up side in step S223, the above processing is skipped (corresponding to processing such as camera power-off in FIG. 16).
[0312]
Then, in the zoom-down processing (step S226), the motor 20 is driven in the CW direction until the contact is detected or the number of pulses reaches a predetermined number. Accordingly, the position of the third gear arm 61 is initialized so as to mesh with the zoom gear 65, and the lens frame 83 is further driven to a position where it can be stored.
[0313]
Then, in order to retract the lens barrel 83, the gear train is switched from a gear train capable of zooming up / down to a gear train capable of setting up / down (step S227).
[0314]
After switching to the setup / down side, the motor 20 is driven in the CCW direction (set-down operation) until the contact is detected, and the lens barrel 83 is driven to the storage position (step S228), and this processing ends.
[0315]
FIG. 25 shows a flowchart of the zoom-down processing shown in step S226 in FIG.
[0316]
In the initial setting (step S229), a setting is made to detect the state of the motor PI and the reset PR84 as a position detection signal. At this time, if the output of the reset PR84 is on, the setup completion state is set in the EEPROM, the drive voltage of the motor 20 is set to the full voltage, 20 is driven in the CW direction (step S230).
[0317]
The state of the reset PR 84 is constantly checked while the motor 20 is being driven, and if the state changes, the current zoom position detection pulse is set to the lens mirror at the state change point of the reset PR 84 in which the reset is previously set. In addition to rewriting the position information of the frame 83, a setup completion flag is written (step S231).
[0318]
It is determined whether a predetermined pulse has been output from the motor 20 (step S232). If the predetermined pulse has not been reached, the process returns to step S231 to repeat the above operation.
[0319]
Further, when a predetermined pulse is output to detect that the motor 20 has been driven to a position near the contact detection position, the motor 20 may be broken if it is applied to the mechanism with a full voltage. Is switched from the full voltage to the low voltage (step S233).
[0320]
Subsequently, the state of the reset PR84 is checked (step S234), and it is determined whether the application of the motor PI is stopped to detect a hit or whether a pulse of the motor PI is output for a predetermined pulse or more (step S234). In step S235), the process returns to step S234 until the detection is performed, and the motor 20 is continuously driven at a low voltage while checking the state of the reset PR84.
[0321]
When the contact is detected or the motor 20 is driven for a predetermined pulse or more, it is determined that the third gear arm 61 has been initialized and the lens frame 83 has been driven to the retractable position, and the zoom position is determined. The above-mentioned wide-tele information is cleared (step S236).
[0322]
It is determined whether or not the lens frame 83 is located in the setup completion state (the setup completion state flag of the zoom position information is set) (step S237). It is checked whether the output of the reset PR84 is on (step S238). Here, when the output of the reset PR 84 is off, it is determined that the lens PR has been forcibly stopped by a hand or the like while the lens barrel 83 is being driven, and the damage process is started.
[0323]
If the lens frame 83 is not in the setup completed state (in the retracted position) in step S237 or if the output of the reset PR 84 is on in step S238 in the setup completed state, To end.
[0324]
FIG. 26 shows a flowchart of the set-down operation in steps S224 and S228 in FIG.
[0325]
This set-down operation is an operation of driving the lens barrel 83 from the photographable position (see FIG. 13) to the storage position (see FIG. 12). Before starting driving, the setup completion flag is first cleared (step S239).
[0326]
In the initial setting (step S240), the motor PI and the reset PR84 are set to be detected as position detection signals.
[0327]
The driving voltage of the motor 20 is set to the full voltage and the motor 20 is driven in the CCW direction (step S241). While the motor 20 is being driven, the status of the reset PR 84 is constantly checked, and if the status changes, the current zoom position detection pulse is rewritten with the preset position information (step S242). ).
[0328]
It is determined whether a predetermined pulse has been output from the motor 20 (step S243). If the predetermined pulse has not been reached, the process returns to step S242 to check the state of the reset PR84 and operate the motor 20 at full voltage. Keep driving.
[0329]
Then, when driving is performed only by a predetermined pulse, it is determined that the vicinity of the mechanical contact has been reached, and the drive voltage of the motor 20 is switched from the full voltage to a low voltage for contact (this drive voltage is used in the zoom-down operation). (This is different from the applied voltage) (step S244).
[0330]
The state of the reset PR84 is checked (step S245), and the hit detection is performed (step S246), and the motor 20 is driven at a low voltage including the hit detection until the output of the motor PI stops.
[0331]
When it is determined that the output of the motor PI has stopped and the lens barrel 83 of the camera has collapsed, the power supply to the motor 20 is turned off (step S247).
[0332]
At this time, since the motor 20 is driven in the CCW direction in the set-down operation, a strong force is applied while the first gear arm 32 and the first stopper 35 are engaged. In this state, if the power is turned off and left for a long time, for example, the gears may be deformed. Therefore, the motor 20 is driven in the CW direction by the loosening B3 pulse to release the stuck state. (Step S248).
[0333]
Thereafter, the state of the reset PR84 is detected (step S249). If the reset PR84 is on, the process is terminated. If the output of the reset PR84 is off, the retractable flag is written in the EEPROM (step S250). ), This routine is terminated.
[0334]
In the above description, the number of pulses is used as the sticking release constant. However, the present invention is not limited to this. For example, time can be used as the sticking release constant.
[0335]
In the drive mechanism of the camera, the drive loads include winding and rewinding of the film, extension and retraction of the lens frame to the shooting position (setup and down), and zoom up and down of the lens frame. Therefore, the sticking release constant is selected based on the zoom position information and the gear position information. However, as the load of the camera driving mechanism, for example, shutter driving, shutter charging, barrier opening / closing, auto focus lens In the case where the extension, the extension, the strobe movement, and the like are set, the same effect can be obtained by separately setting the clinging release constant based on the drive load state and the position information and the gear position information.
[0336]
Thus, according to such an embodiment, an appropriate tack release constant can be selected according to the gear position of the camera gear coupling device and the driving state of the camera, so that the operation can be performed without failing gear switching. Is a stable and high quality camera gear coupling device.
[0337]
[Appendix]
According to the embodiment of the present invention described in detail above, the following configuration can be obtained.
[0338]
(1) a driving source;
A sun gear to which the driving force of the driving source is transmitted,
A planetary gear that always meshes with this sun gear,
A connecting arm that connects between the rotating shaft of the planetary gear and the rotating shaft of the sun gear;
A stopper member fitted to the connecting arm and displaced to a first position for prohibiting the rotation of the connecting arm around the sun gear and a second position for releasing the prohibition;
Electromagnetic means for driving the stopper member;
A plurality of driven parts to be selectively meshed with the planetary gears and to transmit a driving force;
Non-volatile storage means for storing information on the current position of the connecting arm and information on the driving state and the position of the driven part in a readable and writable manner,
A gear coupling device for a camera, comprising:
[0339]
(2) The non-volatile storage means stores a plurality of constants for releasing the fitting state between the stopper member and the connecting arm when displacing the stopper member from the first position to the second position. Having a storage means for storing the disengagement constant,
Selecting an appropriate constant from constants stored in the disengagement constant storage means based on the information on the position of the connecting arm and the information on the driving state and the position of the driven part. The camera gear coupling device according to the above (1).
[0340]
(3) The non-volatile storage means includes a connection arm position storage means for storing information on the position of the connection arm, and a driven part drive state storage means for storing information on the drive state and position of the driven part. The gear connecting device for a camera according to the above (2), comprising:
[0341]
(4) In a camera gear coupling device for transmitting a driving force from a driving source to a driven portion,
A camera gear coupling device, comprising: storage means for storing a plurality of constants necessary for releasing the sticking between members in the gear coupling device in accordance with the state of the camera.
[0342]
(5) In a gear coupling device for a camera that selectively transmits a driving force from a single driving source to a plurality of driven parts,
Non-volatile storage means for storing a plurality of constants necessary to release the sticking between members in the gear coupling device according to the state of the gear coupling device and the state of the selected driven portion. A gear coupling device for a camera.
[0343]
(6) a plurality of driven parts;
A planetary clutch mechanism having a connecting arm, which alternatively transmits a driving force of a driving source to these driven parts,
A stopper member that is fitted to the connecting arm of the planetary clutch mechanism and is displaced to a first position where the rotation of the connecting arm is prohibited and a second position where the prohibition is released;
Non-volatile storage means for storing information on the current position of the connecting arm, and the drive state and position information of the driven part in a readable and writable manner;
A gear coupling device for a camera, comprising:
[0344]
(7) a plurality of driven parts;
A planetary clutch mechanism having a connecting arm, which alternatively transmits a driving force of a driving source to these driven parts,
A stopper member that is fitted to the connecting arm of the planetary clutch mechanism and is displaced to a first position where the rotation of the connecting arm is prohibited and a second position where the prohibition is released;
Electromagnetic means for driving the stopper member;
When the stopper member is displaced from the first position to the second position, a constant necessary for releasing the engagement between the stopper member and the connecting arm is selected as the state of the planetary clutch mechanism. Nonvolatile storage means for storing a plurality of data according to the state of the driven part;
A constant stored in the non-volatile storage means is selected according to the state of the planetary clutch mechanism and the state of the selected driven part, and the drive source and the electromagnetic means are driven based on the selected constant. Control means for releasing the engagement between the stopper member and the connecting arm,
A gear coupling device for a camera, comprising:
[0345]
(8) The sun gear,
A planetary gear that always meshes with the sun gear;
A connecting arm that connects between the rotating shafts of the sun gear and the planetary gear,
A stopper member that is displaced between a state in which the rotation of the connection arm around the sun gear is prohibited and a state in which the rotation is released,
With
In the state where the rotation around the sun gear is prohibited, the connecting arm and the stopper member are in a fitted state, and the operation of the stopper member is prohibited, and at least two or more members are controlled by a single motor and a single electromagnetic means. In a camera gear coupling device for switching a driving unit,
A gear connecting device for a camera, wherein position information of a connecting arm of a currently engaged gear train and driving status and position information of the driven portion are stored in a readable and writable nonvolatile memory.
[0346]
(9) When the prohibition of the rotation of the stopper member around the sun gear is released by the electromagnetic means and the driven portion is switched, at least two or more of the engagement states of the stopper member and the connecting arm are released. A disengagement constant storing means for storing a constant, and selecting an appropriate constant from the disengagement constant storing means from the position information of the connecting arm and the driving state and position information of the driven part. The gear connecting device for a camera according to the above (8), wherein:
[0347]
(10) In the above (1), (2), (3), (5), (6), and (7), the nonvolatile storage means is an EEPROM.
[0348]
(11) In the above (8) and (9), the nonvolatile memory is an EEPROM.
[0349]
(12) In the above (2), (3), (4), (5), (7), and (9), the constant is the number of pulses.
[0350]
(13) In the above (2), (3), (4), (5), (7), and (9), the constant is time.
[0351]
(14) In (1), (2), (3), (4), (6), and (7), the drive source is a single one.
[0352]
(15) In the above (1), (2), (3) and (7), the electromagnetic means is a single one.
[0353]
(16) In the above (1) to (9), the driven part may be a camera zoom mechanism, a lens barrel collapsible mechanism, a film drive mechanism, an autofocus mechanism, a shutter drive mechanism, a barrier opening / closing mechanism, or a strobe light. It has at least one moving mechanism.
[0354]
【The invention's effect】
As described above, the present inventionGiantAccording to the yah connection device,machineIn this case, the sticking can be appropriately released in accordance with the state of, and an accurate operation can be maintained.
[Brief description of the drawings]
FIG. 1 is an enlarged perspective view showing a configuration of a driving device incorporated in a camera according to an embodiment of the present invention and a driving state of the device.
FIG. 2 is an enlarged perspective view showing one driving state of the camera driving device shown in FIG. 1;
FIG. 3 is an enlarged perspective view showing another driving state of the camera driving device of FIG. 1;
FIG. 4 is an enlarged perspective view showing another driving state of the camera driving device of FIG. 1;
FIGS. 5A and 5B are diagrams showing an operation state of the camera driving device of FIG. 1, wherein FIGS.
FIGS. 6A and 6B are diagrams showing an operation state of the camera driving device shown in FIG. 1, wherein FIGS.
FIGS. 7A and 7B are views showing an operation state of the camera driving device shown in FIG. 1, wherein FIGS.
FIGS. 8A and 8B are diagrams showing an operation state of the camera driving device shown in FIG. 1, wherein FIGS.
9A and 9B are diagrams showing an operation state of the camera driving device of FIG. 1, wherein FIGS. 9A and 9B are plan views showing certain operation states, respectively.
FIGS. 10A and 10B are diagrams showing an operation state of the camera driving device shown in FIG. 1, wherein FIGS.
FIGS. 11A and 11B are diagrams showing an operation state of the camera driving device shown in FIG. 1, wherein FIGS.
FIG. 12 is a perspective view showing a lens barrel in a storage position in the embodiment.
FIG. 13 is a perspective view showing a lens barrel in a position where photography is possible in the embodiment.
FIG. 14 is a perspective view showing a lens barrel in a position where a lens is extended to a telephoto end in the embodiment.
FIG. 15 is a block diagram illustrating a configuration of a control device of the camera driving device according to the embodiment.
FIG. 16 is a flowchart showing a shooting sequence including drive control after the power is turned on in the camera of the embodiment.
FIG. 17 is a flowchart showing a gear switching process called in the photographing sequence including the drive control of FIG. 16;
FIG. 18 is a flowchart showing a first gear arm switching process called in the routine of FIG. 17;
FIG. 19 is a flowchart showing a second gear arm switching process called in the routine of FIG. 17;
FIG. 20 is a flowchart showing a second gear arm switching process called in the routine of FIG. 17;
FIG. 21 is a flowchart showing a third gear arm switching process called in the routine of FIG. 17;
FIG. 22 is a flowchart showing a third gear arm switching process called in the routine of FIG. 17;
FIG. 23 is a flowchart showing the loosening control in the embodiment.
FIG. 24 is a flowchart illustrating collapsing processing control according to the present embodiment.
FIG. 25 is a flowchart showing a zoom-down process called in the routine of FIG. 24;
FIG. 26 is a flowchart showing a set-down operation called in the routine of FIG. 24;
[Explanation of symbols]
20 ... motor (drive source)
30, 38, 60 ... sun gear
31, 47, 62 ... planetary gear
32, 45, 61 ... arm (connection arm)
34. Clutch PI (first arm position detecting means)
35, 41, 72: stopper (stopper member)
40 ... electromagnet (electromagnetic means)
46: stopper PI (stopper position detecting means)
84 reset PR (zoom position detecting means)
87: Gear arm position storage means (connection arm position storage means)
88: Zoom position storage means (driven part drive state storage means)
89: Sticking release constant storage means (fitting release constant storage means)
90 ... Control means
91: Motor drive means (drive means)
93 ... Position detection signal selection means (detection means, motor drive signal output means)
94 ... First arm position detecting means
95 ... motor drive amount detection means (detection means, motor drive signal output means)
96: stopper position detecting means
97 Zoom position detecting means
98 ... Signal processing means

Claims (4)

A single drive source,
A sun gear to which the driving force of the driving source is transmitted,
A planetary gear that always meshes with this sun gear,
A connecting arm that connects between the rotating shaft of the planetary gear and the rotating shaft of the sun gear;
A stopper member to be displaced to a second position for releasing the first position and the prohibition to prohibit rotation around the sun gear of the connecting arm in contact with the connecting arm,
A single electromagnetic means for driving the stopper member,
A plurality of driven parts to be selectively meshed with the planetary gears and to transmit a driving force;
Non-volatile storage means for storing information on the current position of the connecting arm and information on the driving state and the position of the driven part in a readable and writable manner,
Control means for driving the drive source by a predetermined amount so as to loosen the connecting arm and the stopper member in a direction to separate the stopper member from the first position when the stopper member is displaced from the first position to the second position;
Setting means for setting a constant relating to the predetermined amount when the connecting arm and the stopper member are driven in a direction in which they are separated from each other;
Determining means for determining whether or not to drive the connecting arm and the stopper member again in a direction in which the connecting arm and the stopper member are separated after performing the driving by the control means;
With
The gear connection is characterized in that, when it is determined by the determining means that the driving is to be performed again, the connecting arm and the stopper member are driven again in a direction in which the connecting arm and the stopper member are separated based on the constant set by the setting means. apparatus. The apparatus further includes constant storage means for storing a plurality of constants for driving the stopper member and the connecting arm in a direction in which the stopper member and the connecting arm are separated from each other,
An appropriate constant is selected from constants stored in the constant storage means based on information on a position of the connecting arm and information on a driving state and a position of the driven part. 2. The gear connecting device according to claim 1. The non-volatile storage unit includes a connection arm position storage unit that stores information about the position of the connection arm, and a driven unit drive state storage unit that stores information about the drive state and position of the driven unit. The gear connecting device according to claim 1 , wherein: In the case of driving again based on the judgment of the judging means, the constant set by the setting means is determined by a shortage when the control means drives the connecting arm and the stopper member away from each other in the driving operation. The gear coupling device according to claim 1, wherein the gear coupling device is set in addition to the number of times.

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