JPH0579542U - Camera shutter - Google Patents
Camera shutterInfo
- Publication number
- JPH0579542U JPH0579542U JP1663092U JP1663092U JPH0579542U JP H0579542 U JPH0579542 U JP H0579542U JP 1663092 U JP1663092 U JP 1663092U JP 1663092 U JP1663092 U JP 1663092U JP H0579542 U JPH0579542 U JP H0579542U
- Authority
- JP
- Japan
- Prior art keywords
- distance
- shutter opening
- step motor
- focus
- moved
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Shutters For Cameras (AREA)
- Exposure Control For Cameras (AREA)
- Focusing (AREA)
Abstract
(57)【要約】
【目的】 オートフォーカスカメラで撮影する撮影間隔
を短縮させる。
【構成】 ステップモータ１に連結される駆動部材１３
に従動させて撮影レンズが連結される距離部材１５を移
動させる。自動焦点検出信号の出力により距離部材１５
の鋸歯部１７に合焦係止部材２１が噛合して距離部材１
５の位置を固定し、撮影レンズを合焦させる。再びステ
ップモータ１を回転させ駆動部材１３を移動させ、シャ
ッタ開口信号の出力により絞りの開口を設定するシャッ
タ開閉部材２５が適正露出の回転が得られる段カム２６
のステップに衝合する位置で駆動部材１３を停止させ
る。段カム２６は駆動部材１３に複数箇所設ける。
【効果】 合焦後、シャッタ開閉部材２５は最近傍の段
カム２６に組合せればよいため、駆動部材１３の移動距
離を短くでき、撮影間隔が短縮できる。
(57) [Summary] [Purpose] To shorten the shooting interval for shooting with an autofocus camera. [Structure] Drive member 13 connected to step motor 1
Following this, the distance member 15 to which the taking lens is connected is moved. The distance member 15 is output by outputting the automatic focus detection signal.
The focus locking member 21 meshes with the sawtooth portion 17 of the distance member 1
Fix the position of 5 and focus the taking lens. The step motor 1 is rotated again to move the driving member 13, and the shutter opening / closing member 25 that sets the aperture of the diaphragm by the output of the shutter opening signal is rotated by the step cam 26 so that the proper exposure is obtained.
The drive member 13 is stopped at a position that abuts the step of. The step cams 26 are provided on the drive member 13 at a plurality of positions. [Effect] After focusing, since the shutter opening / closing member 25 may be combined with the nearest step cam 26, the moving distance of the driving member 13 can be shortened and the photographing interval can be shortened.
Description
【０００１】[0001]
本考案は自動露出、オートフォーカスのカメラ用シャッタに関し、特に絞り決 定時間が短いカメラ用シャッタに係る。 The present invention relates to an auto-exposure and auto-focus camera shutter, and more particularly to a camera shutter with a short aperture determination time.
【０００２】[0002]
従来からオートフォーカス（ＡＦ）カメラでは測距機構により被写体までの距 離が測定されると、その測定値に従いレンズの位置を移動させオートフォーカス し、その後さらに露出制御機構により絞りを決定していた。このようなカメラの シャッター機構は図４に示すように、図示しないモータの軸に連結された正逆回 転可能なステップモータ１を備え、このステップモータ１に連結されてステップ モータ１が正逆回転することにより左右に移動する駆動部材２が設けられる。駆 動部材２の上側には距離部材ばね３により右方向に常時付勢される距離部材４を 備え、駆動部材２に植設されるピン５に係合して距離部材ばね３により右方向に 移動されないように拘束されると共に、ステップモータ１が正回転つまり左回転 する時に駆動部材２に従動して左方向に移動するようになっている。このような 距離部材４は鋸歯部６が設けられ合焦係止部材７の先端部８が噛合される。距離 部材４の鋸歯部６は距離部材４がステップモータ１の回転に伴い左方向に移動さ れる時は、合焦係止部材７の先端部８が鋸歯部６の表面を揺動し、距離部材４が ステップモータ１からの負荷が解除されて距離部材ばね３により右方向に付勢さ れる時、合焦係止部材７の先端部８が鋸歯部６に噛合して距離部材４をその位置 に停止させ距離部材ばね３により移動されないような形状を有している。そのた め左回転しているステップモータ１が自動焦点検出信号により停止されると、距 離部材４が合焦点で停止し、合焦係止部材７の先端部８が鋸歯部６に係合し、距 離部材４を固定することにより、図示しないカメラレンズの撮影位置が設定され るようになっている。 Conventionally, in an auto-focus (AF) camera, when the distance to a subject is measured by a distance measuring mechanism, the lens position is moved according to the measured value to perform auto focus, and then the exposure control mechanism determines the aperture. .. As shown in FIG. 4, the shutter mechanism of such a camera is provided with a step motor 1 which is connected to the shaft of a motor (not shown) and is capable of rotating in the forward and reverse directions. A drive member 2 that moves left and right by rotating is provided. A distance member 4 which is constantly urged to the right by a distance member spring 3 is provided on the upper side of the driving member 2. The distance member 4 is engaged with a pin 5 planted in the driving member 2 and is moved to the right by the distance member spring 3. The step motor 1 is restrained so as not to move, and when the step motor 1 makes a forward rotation, that is, a left rotation, it is driven by the drive member 2 to move to the left. The distance member 4 is provided with a sawtooth portion 6 and the tip end portion 8 of the focus locking member 7 is engaged with the distance member 4. When the distance member 4 is moved to the left as the step motor 1 rotates, the saw tooth portion 6 of the distance member 4 swings on the surface of the saw tooth portion 6 by the tip portion 8 of the focus locking member 7, When the load from the step motor 1 is released and the distance member spring 3 urges the member 4 to the right, the tip 8 of the focus locking member 7 meshes with the sawtooth portion 6 to move the distance member 4 It has a shape such that it is stopped at the position and is not moved by the distance member spring 3. Therefore, when the step motor 1 that is rotating to the left is stopped by the automatic focus detection signal, the distance member 4 stops at the focus point, and the tip 8 of the focus locking member 7 engages with the sawtooth portion 6. However, by fixing the distance member 4, the photographing position of the camera lens (not shown) can be set.
【０００３】 また駆動部材２は露出制御のための段カム９を備える。段カム９はシャッタと 連動してその作動量によりシャッタの開口値が決められるシャッタ開閉レバー１ ０の作動量を規制するものである。シャッタ開閉レバー１０はスイングモータ１ １の軸に連結され、スイングモータ１１の右回転に伴い右回転される。シャッタ 開閉レバー１０が段カム９のステップに衝合すると、左回転方向に付勢される開 閉レバーばね１２により水平方向に戻るようになっている。シャッタ開閉レバー １０の最大回転時は段カム９の最下段に衝合する時であり、この時が絞り開口値 が最大の時である。絞りの開口値を設定するには、距離部材４の位置を固定して レンズの位置を設定した後、ステップモータ１の回転がシャッタ開口信号により 停止されるまで駆動部材２が移動される。シャッタ開口信号により駆動部材２が 停止され、この停止位置はシャッタ開閉レバー１０が回転した時、所望の絞り開 口値が得られる回転角度に相当する段カム９のステップの位置となっている。The drive member 2 also includes a step cam 9 for exposure control. The step cam 9 regulates the operation amount of the shutter opening / closing lever 10 whose interlocking with the shutter determines the shutter opening value according to the operation amount thereof. The shutter opening / closing lever 10 is connected to the shaft of the swing motor 11 and is rotated to the right as the swing motor 11 is rotated to the right. When the shutter opening / closing lever 10 collides with the step of the step cam 9, the shutter opening / closing lever 10 is returned in the horizontal direction by the opening / closing lever spring 12 which is biased in the leftward rotation direction. When the shutter opening / closing lever 10 is maximally rotated, it is the time when the lowermost stage of the step cam 9 is abutted, and this is the time when the aperture opening value is maximum. In order to set the aperture value of the diaphragm, after the position of the distance member 4 is fixed and the position of the lens is set, the driving member 2 is moved until the rotation of the step motor 1 is stopped by the shutter opening signal. The drive member 2 is stopped by the shutter opening signal, and this stop position is the step position of the step cam 9 corresponding to the rotation angle at which the desired aperture opening value is obtained when the shutter opening / closing lever 10 rotates.
【０００４】[0004]
このようなオートフォーカスカメラで撮影を行う場合、まずオートフォーカス するためステップモータ１を左回転させて駆動部材２を左方向に移動し、駆動部 材２の係止軸５に係止された距離部材４を左に移動して、自動焦点検出信号が出 力された時点で合焦係止部材７により距離部材４を固定する。その後、露出制御 のためステップモータ１を右回転させて駆動部材２を右方向に移動させ、シャッ タ開口信号の出力により段カム９がシャッタ開閉レバー１０の適正露出位置まで 移動させていた。 When photographing with such an autofocus camera, first, in order to perform autofocus, the step motor 1 is rotated counterclockwise to move the driving member 2 leftward, and the distance locked by the locking shaft 5 of the driving member 2 is moved. The member 4 is moved to the left, and when the automatic focus detection signal is output, the focusing member 7 fixes the distance member 4. Thereafter, for exposure control, the step motor 1 is rotated clockwise to move the driving member 2 to the right, and the step cam 9 is moved to the proper exposure position of the shutter opening / closing lever 10 by the output of the shutter opening signal.
【０００５】 しかしながら、合焦位置が始動初期から短い場合は、合焦位置が設定されてい るにも拘らず、予め設定された時間経過後でないと、露出作動が開始できず、露 出制御の終了まで、鋸歯部６の初期から終期までの距離をｒとすると、駆動部材 ２は２ｒの距離を移動することになり時間がかかってしまった。そのため、撮影 設定時間が長くなってしまうという欠点があった。However, when the in-focus position is short from the initial stage of start-up, the exposure operation cannot be started until the preset time elapses, even though the in-focus position is set, and the exposure control is performed. Until the end, if the distance from the initial stage to the final stage of the sawtooth portion 6 is r, the drive member 2 moves a distance of 2r, which takes time. Therefore, there is a drawback that the shooting setting time becomes long.
【０００６】 本考案は上記欠点を解消するためになされたものであって、撮影設定時間が短 いカメラ用シャッタを提供することを目的とする。The present invention has been made to solve the above-described drawbacks, and an object of the present invention is to provide a camera shutter having a short shooting setting time.
【０００７】[0007]
上記目的を達成するため、本考案のカメラ用シャッタは、正逆回転可能なステ ップモータと、前記ステップモータに連結され前記ステップモータの正逆回転に 伴い移動しカム部を備えた駆動部材と、前記駆動部材に係止されて付勢に対抗し て移動され撮影レンズを連動させる距離部材と、前記ステップモータが自動焦点 検出信号により停止した時前記距離部材をその位置に固定する合焦係止部材と、 前記ステップモータがシャッタ開口信号により停止され前記駆動部材が停止した 時前記カム部の所望の位置に衝合することにより作動量が定められシャッタ開口 値を設定するシャッタ開閉部材とを備えたカメラ用シャッタにおいて、前記駆動 部材は複数箇所に前記カム部を有し、前記ステップモータの回転に伴い前記駆動 部材に従動して前記距離部材が移動され前記撮影レンズの合焦位置で前記合焦係 止部材により前記距離部材が固定された時点の位置から近傍にある前記カム部に 前記シャッタ開閉部材が衝合されて成るものである。 In order to achieve the above object, a camera shutter of the present invention comprises a step motor capable of normal and reverse rotation, a driving member which is connected to the step motor and moves with the forward and reverse rotation of the step motor, and includes a cam portion. A distance member that is locked by the drive member and moves against the bias to interlock the photographing lens, and a focus lock that fixes the distance member at that position when the step motor is stopped by an auto focus detection signal. A shutter opening / closing member that sets a shutter opening value by setting an operation amount by colliding with a desired position of the cam portion when the step motor is stopped by a shutter opening signal and the driving member is stopped. In the camera shutter, the drive member has the cam portions at a plurality of positions, and the drive member is driven by the rotation of the step motor. The shutter opening / closing member is abutted against the cam portion in the vicinity of the position where the distance member is moved and the distance member is fixed by the focus stopping member at the focus position of the photographing lens. Is.
【０００８】[0008]
本考案のカメラ用シャッタは、正逆回転可能なステップモータに連結され、左 右に移動可能で露出制御に係る駆動部材と、駆動部材の係止軸に係止されて従動 するオートフォーカスに係る距離部材とを備える。撮影設定する場合、まず撮影 レンズの合焦を行うためスイップモータを回転させ、駆動部材を移動させ、距離 部材を従動させる。自動焦点検出信号によりステップモータの移動が停止される とその位置で距離部材の鋸歯部に合焦係止部材が係合され、距離部材をその位置 に固定して撮影レンズの位置を設定する。その後、露出制御のため再びステップ モータを回転させ駆動部材を移動させ、シャッタ開閉部材が駆動部材に設けられ たカム部の所望のステップの位置になるまで移動させる。これによりシャッタ開 閉部材の作動量が定められ、絞りの開口値が設定される。この時、駆動部材のカ ム部を複数箇所に設けることによりシャッタ開閉部材が近傍のカム部に衝合する ように駆動部材を移動させる。このため駆動部材の露出制御のための移動距離は 短くなり、従って露出制御に要する時間を非常に短縮することができる。 The camera shutter of the present invention is connected to a forward / reverse rotatable step motor, is movable to the left and right, is related to an exposure control driving member, and is related to an autofocus driven by a locking shaft of the driving member. And a distance member. When setting the shooting, first, the sweep motor is rotated to move the driving member and the distance member is driven in order to focus the shooting lens. When the movement of the step motor is stopped by the automatic focus detection signal, the focus locking member is engaged with the sawtooth portion of the distance member at that position, and the distance member is fixed at that position to set the position of the taking lens. Then, for exposure control, the step motor is rotated again to move the drive member, and the shutter opening / closing member is moved to a desired step position of the cam portion provided on the drive member. As a result, the operation amount of the shutter opening / closing member is determined, and the aperture value of the diaphragm is set. At this time, by providing cam portions of the driving member at a plurality of positions, the driving member is moved so that the shutter opening / closing member collides with the cam portion in the vicinity. For this reason, the movement distance for the exposure control of the drive member becomes short, and therefore the time required for the exposure control can be greatly shortened.
【０００９】[0009]
本考案のカメラ用シャッタを適用した一実施例を図面を参照して説明する。 An embodiment to which the camera shutter of the present invention is applied will be described with reference to the drawings.
【００１０】 図１に示すカメラ用シャッタＳは、ステップモータ１と、ステップモータ１に 連結されてステップモータ１の正回転（左回転）で左方向に、逆回転（右回転） で右方向に移動し露出制御に係わる駆動部材１３と、駆動部材１３の上側に設け られ駆動部材１３に植設されるピン１４に係合して移動するオートフォーカスに 係る距離部材１５とを有する。距離部材１５は図示しない撮影レンズに連結され 、距離部材１５の位置が即ち撮影レンズの位置を決定するものであって、距離部 材ばね１６により図において右方向に付勢され、駆動部材１３のピン１４に係合 しステップモータ１の回転のより図において左方向に移動される駆動部材１３に 従動して左方向に移動されるようになっている。このような距離部材１５には鋸 歯部１７及び両端に突出部１８、１９が設けられる。そして、この鋸歯部１７に 先端部２０が噛合する合焦係止部材２１が備えられる。合焦係止部材２１の先端 部２０は距離部材１５が左方向に移動される時は、係止部材ばね２２により鋸歯 部１７の表面から離れないように負勢され表面を揺動して距離部材１５の移動を 促し、距離部材１５が右方向に付勢される時は、鋸歯部１７に噛合して、距離部 材１５の移動を阻止し、その位置に距離部材１５を固定するようになっている。 更に、合焦係止部材２１の他端部２３を係止する解除レバー２４が備えられる。 解除レバー２４は、距離部材１５の鋸歯部１７に噛合して距離部材１５を固定し た合焦係止部材２１の噛合を解除するために設けられる。距離部材１５を左方向 に移動させ、合焦係止部材２１の先端部２０を突出部１８に乗り上げさせると、 解除レバー２４は、合焦係止部材２１の他端部２３を係止し、先端部２０が上昇 したそのままの状態を保持する。そして、先端部２０が上昇されているため、距 離部材１５は、右方向に移動され、距離部材１５の突出部１９に解除レバー２４ が接触し、解除レバー２４が右回転するようになっている。解除レバー２４が右 回転することにより合焦係止部材２１の係止が解除され、合焦係止部材２１は右 回転して先端部２０が下降し、鋸歯部１７の初期位置である最左端に設置される ようになっている。The camera shutter S shown in FIG. 1 is connected to the step motor 1 and is connected to the step motor 1 in the left direction when the step motor 1 is normally rotated (counterclockwise rotation) and in the right direction when it is reversely rotated (right rotation). It has a drive member 13 that moves and is involved in exposure control, and a distance member 15 that is provided on the upper side of the drive member 13 and that moves by engaging with a pin 14 that is implanted in the drive member 13. The distance member 15 is connected to a photographic lens (not shown), and the position of the distance member 15 determines the position of the photographic lens. That is, the distance member spring 16 urges the distance member spring 16 to the right in FIG. It is adapted to be moved to the left by being driven by the driving member 13 which is engaged with the pin 14 and is moved to the left in the drawing by the rotation of the step motor 1. The distance member 15 is provided with a saw tooth portion 17 and protrusions 18 and 19 at both ends. Then, the saw tooth portion 17 is provided with a focus locking member 21 with which the tip portion 20 meshes. When the distance member 15 is moved leftward, the tip end 20 of the focus locking member 21 is biased by the locking member spring 22 so as not to separate from the surface of the sawtooth portion 17 and rocks the surface to move the distance. When the distance member 15 is urged to the right by urging the movement of the member 15, the distance member 15 meshes with the sawtooth portion 17 to prevent the distance member 15 from moving and fix the distance member 15 at that position. Is becoming Further, a release lever 24 for locking the other end 23 of the focus locking member 21 is provided. The release lever 24 is provided to mesh with the saw-tooth portion 17 of the distance member 15 and release the meshing of the focus locking member 21 that fixes the distance member 15. When the distance member 15 is moved to the left and the tip portion 20 of the focus locking member 21 is mounted on the protrusion 18, the release lever 24 locks the other end 23 of the focus locking member 21, The tip portion 20 is maintained in the raised state. Since the tip portion 20 is raised, the distance member 15 is moved to the right, the release lever 24 comes into contact with the protrusion 19 of the distance member 15, and the release lever 24 is rotated right. There is. When the release lever 24 rotates to the right, the locking of the focus locking member 21 is released, the focus locking member 21 rotates to the right, the tip portion 20 descends, and the sawtooth portion 17 is moved to the leftmost end which is the initial position. It will be installed in.
【００１１】 このような距離部材２１を従動させる駆動部材１３は、その作動量がシャッタ の開口値を決定するシャッタ開閉部材２５の回転角度を制御するカム部である段 カム２６を備える。シャッタ開閉部材２５は、右回転するスイングモータ２７の 軸に連結され右回転する。シャッタ開閉部材２５には左回転方向に付勢する開閉 部材ばね２８が接続され、シャッタ開閉部材２５が回転して段カム２６のステッ プに衝合すると、シャッタ開閉部材２５を左回転方向に付勢して、水平位置に戻 すようになっている。段カム２６の各ステップは、シャッタ開閉部材２５の回転 角度に相当し、最下段はシャッタ開閉部材２５の最大回転角度、即ち絞りの開口 の最大値になっている。The driving member 13 that follows the distance member 21 includes a step cam 26 that is a cam portion that controls the rotation angle of the shutter opening / closing member 25 whose operation amount determines the opening value of the shutter. The shutter opening / closing member 25 is connected to the shaft of a swing motor 27 that rotates clockwise and rotates clockwise. An opening / closing member spring 28 that biases the shutter opening / closing member 25 in the counterclockwise rotation direction is connected. When the shutter opening / closing member 25 rotates and collides with the step of the step cam 26, the shutter opening / closing member 25 is biased in the counterclockwise rotation direction. It is urged to return to the horizontal position. Each step of the step cam 26 corresponds to the rotation angle of the shutter opening / closing member 25, and the lowermost step is the maximum rotation angle of the shutter opening / closing member 25, that is, the maximum value of the aperture of the diaphragm.
【００１２】 このような段カム２６を駆動部材１３に複数、例えば２６ａ、２６ｂ、２６ｃ と３箇所に設ける。そのため、シャッタ開閉部材２５は段カム２６ａ、２６ｂ、 ２６ｃの何れと組合されてもよいため、最近傍の段カム２６ａ、２６ｂ、または ２６ｃに衝合するように組合せれば駆動部材１３の移動距離を短縮することがで きる。A plurality of such step cams 26 are provided on the driving member 13 at three positions, for example, 26a, 26b, and 26c. Therefore, the shutter opening / closing member 25 may be combined with any of the step cams 26a, 26b, and 26c. Therefore, when the shutter opening / closing member 25 is combined so as to abut the nearest step cam 26a, 26b, or 26c, the moving distance of the driving member 13 is reduced. Can be shortened.
【００１３】 このようなカメラ用シャッタＳを用いて撮影を行うには、図２のシーケンス図 に示すように、ステップモータ１を左回転させ、駆動部材１３を左方向に移動さ せ、距離部材１５を従動させる。撮影レンズが合焦位置になった時、自動焦点検 出信号が出力され、ステップモータ１が停止する（Ｔ1）。それに伴い駆動部材 １３及び距離部材１５は停止し、合焦係止部材２１の先端部２０は距離部材１５ の鋸歯部１７に係合し、距離部材１５は固定され、撮影レンズは合焦位置に設定 される（Ｔ2）。In order to perform photographing using such a camera shutter S, as shown in the sequence diagram of FIG. 2, the step motor 1 is rotated counterclockwise, the drive member 13 is moved leftward, and the distance member is moved. Follow 15 When the taking lens reaches the in-focus position, an automatic focus detection signal is output and the step motor 1 stops (T 1 ). Along with that, the driving member 13 and the distance member 15 are stopped, the distal end portion 20 of the focus locking member 21 is engaged with the sawtooth portion 17 of the distance member 15, the distance member 15 is fixed, and the taking lens is brought to the focus position. It is set (T 2 ).
【００１４】 その後ステップモータ１を右回転させ駆動部材１３を右方向に移動させる。そ してシャッタ開閉部材２５が絞り開口値に対応する回転角度となる段カム２６の ステップ位置になった時、シャッタ開口信号が出力されステップモータ１が停止 する（Ｔ3）。この時、シャッタ開閉部材２５が最近傍の段カム２６に組合され るため、早期に露出が開始され露出制御は短時間で終了する。特に、撮影レンズ の合焦位置が鋸歯部１７の終期の場合、駆動部材１５はオートフォーカス終了時 に最左端に位置し、その後露出制御するためには、シャッタ開閉部材２５を段カ ム２６ｃに組合せればよいため、駆動部材１５の露出制御のための移動距離は撮 影レンズの合焦位置が初期の時に匹敵して短距離になる。そしてシャッタ開閉部 材２５を段カム２６の所望のステップに衝合させることによりスイングモータ２ ７をその角度で回転させて撮影する（Ｔ4）。After that, the step motor 1 is rotated clockwise to move the driving member 13 rightward. Then, when the shutter opening / closing member 25 reaches the step position of the step cam 26 having the rotation angle corresponding to the aperture value, the shutter opening signal is output and the step motor 1 is stopped (T 3 ). At this time, since the shutter opening / closing member 25 is combined with the nearest step cam 26, the exposure starts early and the exposure control ends in a short time. In particular, when the focus position of the taking lens is at the end of the sawtooth portion 17, the driving member 15 is located at the leftmost end at the end of autofocus, and then the shutter opening / closing member 25 is moved to the stepped cam 26c in order to control the exposure. Since they can be combined, the movement distance for the exposure control of the driving member 15 is short when compared with the initial focusing position of the imaging lens. Then, the shutter opening / closing member 25 is brought into abutment with a desired step of the stepped cam 26 to rotate the swing motor 27 at that angle for photographing (T 4 ).
【００１５】 その後初期化するためステップモータ１を合焦係止部材２１の先端部２０が距 離部材１５の突出部１８に乗り上げられるまで回転させ（Ｔ5）、解除レバー２ ４により合焦係止部材２１の先端部２０が上昇したその状態で保持する間に、ス テップモータ１を逆回転させて距離部材１５の突出部１９により、解除レバー２ ４を作動して、合焦係止部材２１との係止を解き先端部２０が鋸歯部１７の初期 の位置にくるまで距離部材１５を移動させ、１回の撮影を終了する（Ｔ6）。After that, in order to initialize, the step motor 1 is rotated until the tip 20 of the focus locking member 21 rides on the protrusion 18 of the distance member 15 (T 5 ), and the focus lever is moved by the release lever 24. While the tip end portion 20 of the stopper member 21 is held in the raised state, the step motor 1 is rotated in the reverse direction and the projection portion 19 of the distance member 15 operates the release lever 24 to activate the focus locking member 21. The distance member 15 is moved until the front end portion 20 reaches the initial position of the saw-tooth portion 17 by releasing the lock of the distances, and one photographing is completed (T 6 ).
【００１６】 以上の説明は本考案の一実施例の説明であり、本考案はこれに限定されず、図 ３に示すように、駆動部材及び距離部材を直線的ではなく、光軸の周囲に配した ものであってもよい。図３において、ステップモータ１の正回転により左回転し 、ステップモータ１の逆回転により右回転するリング状の駆動部材１３ａ及び駆 動部材１３ａに従動するリング状の距離部材１６ａが備えられる。図１と同符号 のものは同様のものを示し、同様の動作をするため説明は省略する。The above description is of one embodiment of the present invention, and the present invention is not limited to this, and as shown in FIG. 3, the driving member and the distance member are not linear, but are arranged around the optical axis. It may be arranged. In FIG. 3, a ring-shaped drive member 13a that rotates left by the forward rotation of the step motor 1 and rotates right by the reverse rotation of the step motor 1 and a ring-shaped distance member 16a that follows the drive member 13a are provided. The same reference numerals as those in FIG. 1 indicate the same components, and the description thereof will be omitted because they operate in the same manner.
【００１７】 また、駆動部材１３に設ける絞り開口値を制御する段カム２６ａ、２６ｂ、２ ６ｃは段カムに限らず、適宜直線または曲線で連続的に形成してもよい。Further, the step cams 26a, 26b, 26c for controlling the aperture value provided on the driving member 13 are not limited to the step cams, and may be formed continuously in a straight line or a curved line as appropriate.
【００１８】[0018]
以上の説明からも明らかなように、本考案のカメラ用シャッタによれば、シャ ッタの開口値を設定するシャッタ開閉部材の回転角度を制御するカム部を、駆動 部材に複数設けたため、オートフォーカス終了時点で、シャッタ開閉部材が近傍 のカム部に衝合するよう駆動部材を移動させればよいため、駆動部材の移動距離 を短くできる。特に、合焦位置が終期の場合、駆動部材の移動距離は短縮され、 従って露出制御に要する時間を短縮できる。従って、撮影設定に要する時間を短 縮できる。 As is apparent from the above description, according to the camera shutter of the present invention, the driving member is provided with a plurality of cam portions for controlling the rotation angle of the shutter opening / closing member that sets the opening value of the shutter. At the end of focusing, the drive member may be moved so that the shutter opening / closing member abuts on the cam portion in the vicinity, so that the moving distance of the drive member can be shortened. In particular, when the focus position is at the end, the moving distance of the drive member is shortened, and therefore the time required for exposure control can be shortened. Therefore, the time required for shooting setting can be shortened.
【図１】本考案の一実施例の構成を示す平面図FIG. 1 is a plan view showing the configuration of an embodiment of the present invention.
【図２】図１に示す一実施例による撮影設定のシーケン
スを示す図FIG. 2 is a diagram showing a sequence of shooting settings according to the embodiment shown in FIG.
【図３】他の実施例を示す平面図FIG. 3 is a plan view showing another embodiment.
【図４】従来例を示す平面図FIG. 4 is a plan view showing a conventional example.
１ ステップモータ １３ 駆動部材 １５ 距離部材 ２１ 合焦係止部材 ２５ シャッタ開閉部材 ２６ａ、２６ｂ、２６ｃ 段カム（カム部） Ｓ カメラ用シャッタ 1 Step Motor 13 Drive Member 15 Distance Member 21 Focus Locking Member 25 Shutter Opening / Closing Members 26a, 26b, 26c Stage Cam (Cam) S Camera Shutter
フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｇ０３Ｂ 9/08 Ｈ 7820−2Ｋ (72)考案者 千々岩 智樹 千葉県四街道市鹿渡934−13番地 株式会 社精工舎千葉事業所内Continuation of front page (51) Int.Cl. 5 Identification number Reference number within the agency FI Technical display location G03B 9/08 H 7820-2K (72) Creator Tomoki Senjiwa 934-13 Shikato, Yotsukaido-shi, Chiba Stock corporation Seiko Co., Ltd. Inside Chiba Works
Claims (1)
ステップモータに連結され前記ステップモータの正逆回
転に伴い移動しカム部を備えた駆動部材と、前記駆動部
材に係止されて付勢に対抗して移動され撮影レンズを連
動させる距離部材と、前記ステップモータが自動焦点検
出信号により停止した時前記距離部材をその位置に固定
する合焦係止部材と、前記ステップモータがシャッタ開
口信号により停止され前記駆動部材が停止した時前記カ
ム部の所望の位置に衝合することにより作動量が定めら
れシャッタ開口値を設定するシャッタ開閉部材とを備え
たカメラ用シャッタにおいて、前記駆動部材は複数箇所
に前記カム部を有し、前記ステップモータの回転に伴い
前記駆動部材に従動して前記距離部材が移動され前記撮
影レンズの合焦位置で前記合焦係止部材により前記距離
部材が固定された時点の位置から近傍にある前記カム部
に前記シャッタ開閉部材が衝合されて成ることを特徴と
するカメラ用シャッタ。1. A forward / reverse rotatable step motor, a drive member which is connected to the step motor and moves with the forward / reverse rotation of the step motor and which has a cam portion, and a biasing member which is locked to the drive member. A distance member that is moved in opposition to the shooting lens and that interlocks the photographing lens; a focus locking member that fixes the distance member at that position when the step motor is stopped by an automatic focus detection signal; And a shutter opening / closing member that sets a shutter opening value by setting an operation amount by colliding with a desired position of the cam portion when the driving member is stopped by the driving member. The cam portion is provided at a plurality of positions, and the distance member is moved by being driven by the drive member according to the rotation of the step motor, and the focusing position of the photographing lens is moved. 2. The shutter for a camera, wherein the shutter opening / closing member is abutted against the cam portion located in the vicinity of the position when the distance member is fixed by the focus locking member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1663092U JPH0579542U (en) | 1992-03-27 | 1992-03-27 | Camera shutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1663092U JPH0579542U (en) | 1992-03-27 | 1992-03-27 | Camera shutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0579542U true JPH0579542U (en) | 1993-10-29 |
Family
ID=11921688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1663092U Pending JPH0579542U (en) | 1992-03-27 | 1992-03-27 | Camera shutter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0579542U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112882315A (en) * | 2019-11-15 | 2021-06-01 | 台湾东电化股份有限公司 | Optical element driving mechanism |
-
1992
- 1992-03-27 JP JP1663092U patent/JPH0579542U/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112882315A (en) * | 2019-11-15 | 2021-06-01 | 台湾东电化股份有限公司 | Optical element driving mechanism |
| CN113985555A (en) * | 2019-11-15 | 2022-01-28 | 台湾东电化股份有限公司 | Optical element driving mechanism |
| CN113985555B (en) * | 2019-11-15 | 2023-08-15 | 台湾东电化股份有限公司 | Optical element driving mechanism |
| US11852886B2 (en) | 2019-11-15 | 2023-12-26 | Tdk Taiwan Corp. | Optical element driving mechanism |
| CN112882315B (en) * | 2019-11-15 | 2024-06-11 | 台湾东电化股份有限公司 | Optical element driving mechanism |
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