JPS61158318A - Electric shutter provided with af control mechanism for camera - Google Patents

Electric shutter provided with af control mechanism for camera

Info

Publication number
JPS61158318A
JPS61158318A JP27966184A JP27966184A JPS61158318A JP S61158318 A JPS61158318 A JP S61158318A JP 27966184 A JP27966184 A JP 27966184A JP 27966184 A JP27966184 A JP 27966184A JP S61158318 A JPS61158318 A JP S61158318A
Authority
JP
Japan
Prior art keywords
electromagnet
lever
pawl
ring
spring
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
Application number
JP27966184A
Other languages
Japanese (ja)
Inventor
Tamotsu Takahashi
保 高橋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nidec Precision Corp
Original Assignee
Nidec Copal Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nidec Copal Corp filed Critical Nidec Copal Corp
Priority to JP27966184A priority Critical patent/JPS61158318A/en
Publication of JPS61158318A publication Critical patent/JPS61158318A/en
Pending legal-status Critical Current

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  • Shutters For Cameras (AREA)
  • Automatic Focus Adjustment (AREA)

Abstract

PURPOSE:To use an electromagnet of an AE mechanism also as an electromagnet of an AF mechanism in common and to set up an AF driving member and a shutter blade opening/closing member automatically at the initial stage of releasing operation by executing AE control in accordance with the change of the number of pulses and executing AF control in accordance with the change of final pulse length. CONSTITUTION:When the 2nd electromagnet 16 is turned on and an iron chip 17b is attracted and held, a locking pawl lever 17 is rotated in the clockwise direction and an AF locking pawl 19 rotates in the counterclockwise direction. Consequently, the pawl part 19a of the AF locking pawl 19 is engaged with a ratchet gear part 2c to hold an AF driving ring 2 on an adjusting position corresponding to the number of pulses. On the other hand, a locking pawl lever 17 disengages its pawl part 17c from a ratchet pawl lever 14 and a ratchet pawl lever 14 also disengages its pawl part 14a from the gear part 4a, so that an AF setting ring 4 is rotated in the clockwise direction by a spring 5, a projection chip 4c pushes up an upper bending part 8b and a release lever 8 is rotated in the counterclockwise direction and disengaged from an opening/closing ring 6. Consequently, the ring 6 is opened and rotated in the clockwise direction by a spring 7 to open shutter blades 10 and start exposure.

Description

【発明の詳細な説明】 111勇」L 本発明は、カメラ用のAFilllli1機構を備えた
電気シャッタに関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric shutter with an AFilli1 mechanism for a camera.

一児U販 従来のカメラは、AF(自動焦点調節)機構及びAE(
自動露出)機構のチャージを機械的連結機構を介して手
動或いはモータ駆動により行っていたため、機械的機構
が複雑になったり、シャッタブロックの装着位置が制限
されろことにより自由なカメラ設計ができないという問
題があった。
Conventional cameras sold by Ichiko U have an AF (automatic focus adjustment) mechanism and an AE (
Charging of the automatic exposure (automatic exposure) mechanism was done manually or by motor drive through a mechanical linkage, which made the mechanical mechanism complicated and restricted the mounting position of the shutter block, making it impossible to design the camera freely. There was a problem.

そこで、これを解決するために、シャッタを電磁シャッ
タ化する試みが行われているが、これはAE&l1mを
セットレスにすることができるのみであって、AF機構
をセットレスにするまでには至らなかった。又、AFl
ltFlをAE軸機構は別に電電化してセットレスにし
た場合、カメラが大型化し且つコスト高になるという問
題があった。
Therefore, in order to solve this problem, attempts have been made to change the shutter to an electromagnetic shutter, but this only makes the AE & l1m setless, but does not go far enough to make the AF mechanism setless. There wasn't. Also, AFL
If the AE axis mechanism of the ltFl was separately electrified and setless, there was a problem that the camera would become larger and more expensive.

豆−立 本発明は、AF41111及びAE軸機構両方共を少な
い部品構成で七ノドレスにし得るようにしたカメラ用の
AF制御機構を備えた電気シャッタを提供せんとするも
のである。
SUMMARY OF THE INVENTION It is an object of the present invention to provide an electric shutter equipped with an AF control mechanism for a camera, in which both the AF41111 and the AE axis mechanism can be made independent with a small number of parts.

本発明による電気シャフタは、戻り力源が付与されたA
F駆動部材と、開放力源が付与されたシャッタ羽根開閉
部材と、パルス駆動により前記AFS[動部材を戻り力
源に抗して駆動し且つパルス駆動の初期に前記シャフタ
羽根開閉部材を閉7じ位置(セット位置)に係止すると
共に最終パルスの立下りにより前記シャック羽根開閉部
材を閉じ位置に戻す第一電磁石と、最終パルスの立上り
に対応して前記へF駆動部材を調定位置(セット位置)
に保持し且つ前記シャフタ羽根開閉部材の係止を解除す
る第二の電磁石とを具備し、パルス数の変化によりA 
E Ill mを行い且つ最終パルス長の変化によりA
Filllwjを行うようにしたことにより、A2機構
のt磁石をAF機構の電磁石に兼用すると共に、レリー
ズ操作の初期の段階でAF駆動部材のセット及びシャフ
タ羽根開閉部材のセットが自動的に行われるようにした
ものである。
The electric shaft according to the present invention is provided with a return force source.
The F driving member, the shutter blade opening/closing member to which an opening force source is applied, and the AFS by pulse driving. a first electromagnet that locks in the same position (set position) and returns the shack blade opening/closing member to the closed position in response to the fall of the final pulse; and a first electromagnet that moves the F drive member to the adjustment position ( set position)
and a second electromagnet for holding the shaft blade opening/closing member at the same time and releasing the locking of the shaft blade opening/closing member, and by changing the number of pulses, the
By performing E Ill m and changing the final pulse length, A
By performing Fillwj, the t magnet of the A2 mechanism is also used as the electromagnet of the AF mechanism, and the setting of the AF drive member and shutter blade opening/closing member are automatically performed at the initial stage of the release operation. This is what I did.

ス」L匠 以下、図示した一実施例に基づき本発明の詳細な説明す
れば、第1図は本発明シャフタの構造を示す平面図であ
って、1はアパーチャ1aを有する基板、2は基板1の
上方にてアパーチャ1aと回忌的に回動可能に配設され
且つその回動に伴い図示しないレンズブロックを紙面と
垂直な方向に操り出し得るようになっていると共に所定
位置に係接ピン’la、’lbが植設され且つラチェッ
トギヤ部2Cが形成されたAF%I!動リング、3はA
F駆動リング2に右旋習性(戻り習性)を付与している
戻しバネ、4は基板1上にてアパーチャlaと回忌的に
回動可能に配設されていると共に所定位置に弧状ラチェ
ットギヤ部4aと左旋時係接ビン2aを押動し得る突出
片4dと他の突出片4Cとが設けられたAF上セツトン
グ、5はAFセフ ゛トリフグ4に右旋習性を付与して
いるバネ、6は基板1上にアパーチャ1aと回忌的に回
動可能に配設されていると共に所定位置に上方折曲部6
aと係合部6bとAF駆動リング2が戻り位置にある時
係接ピン2bにより係止される突出片6Cとトリガース
イッチ作動ピン6dとが設けられた開閉リング、7は開
閉リング6に左旋習性(開放習性)を付与している開き
バネ、8は基板l上に枢着され且つバネ9により右旋習
性が付与されていると共に保合部6bと係合し得る下方
折曲部8aと突出片4Cが右方から押接する上方折曲部
8bとが設けられていてAFセットリング4が左旋した
時に右旋して開閉リング6を係止するシャツタレリーズ
°レバー、10.10は開閉リング6にピン・スロット
結合により連結せしめられていて開閉リング6の右旋及
び左旋により開閉せしめられる一対のシャッタ羽根であ
る。尚、戻しバネ3の弾力は開きバネ7の弾力よりも強
く設定され、又バネ5の弾力はバネ9の弾力よりも強く
設定されているものとする。11は基板l上に固定され
た第一の電磁石、12は基板1上に枢着されていると共
に一腕部に左旋時上方折凸部6aに係合して開閉リング
6を右旋させる下方折曲部12aと第一電磁石itに吸
着される鉄片12bが設けられていて鉄片12bが第一
電磁石11に吸引せしめられることにより右旋せしめら
れるようになっている閉じ駆動レバー、13は閉じ駆動
レバー12に右旋習性を付与している閉じバネ、14は
閉じ駆動レバー12の他腕部に枢着され且っ該他腕部と
の間に張架されたバネ15により右旋習性が付与されて
いると共に先端部にラチェットギヤ部4aと係合する爪
部14aと下方折曲部14bとが設けられたラチェツト
爪レバー、16は基板!上に固定された第二電磁石、1
7は基Fi、1上に枢着されていると共に一腕部に上方
折曲部17aと第二電磁石16に吸着される鉄片17b
とが設けられ且つ他腕部の先端にラチェットギヤ部4a
と係合する爪部17cが設けられた係止爪レバー、1B
は係止爪レバー17に左旋習性を付与しているバネ、1
9は基板l上に枢着され且つバネ2oにより左旋習性が
付与されていると共に先端部にラチェットギヤ部2cと
係合し得る爪部19aが設けられ且つ側縁が上方折曲部
17aに係接していて係止爪レバー17の右旋及び左旋
に対応して左旋及び右旋を行い爪部19aがラチェット
ギヤ部2Cに対して保合及び離脱を行うAF係止爪であ
る。尚、閉じバネ13の弾力は開きバネ7の弾力よりも
強く設定され、又バネ1Bの弾力はバネ20の弾力より
も強く設定されているものとする。
Hereinafter, the present invention will be described in detail based on an illustrated embodiment. FIG. 1 is a plan view showing the structure of the shutter of the present invention, in which 1 is a substrate having an aperture 1a, and 2 is a substrate. The lens block is disposed above the aperture 1a so as to be rotatable with respect to the aperture 1a, and as the lens block is rotated, a lens block (not shown) can be moved out in a direction perpendicular to the plane of the paper. AF%I where 'la and 'lb are planted and ratchet gear part 2C is formed! dynamic ring, 3 is A
A return spring 4 that imparts right-handed rotation behavior (return behavior) to the F drive ring 2 is disposed on the base plate 1 so as to be rotatable in rotation with the aperture la, and is also provided with an arcuate ratchet gear portion at a predetermined position. 4a, an AF upper setter provided with a protruding piece 4d and another protruding piece 4C capable of pushing the engaging pin 2a when rotating to the left; 5, a spring that imparts right-handed rotation behavior to the AF safety lever 4; 6; is disposed on the substrate 1 so as to be rotatable in rotation with the aperture 1a, and has an upper bent portion 6 at a predetermined position.
a, an opening/closing ring provided with an engaging portion 6b, a protruding piece 6C that is locked by the engaging pin 2b when the AF drive ring 2 is in the return position, and a trigger switch operating pin 6d; An opening spring 8 imparting a habit (opening habit) is pivotally mounted on the substrate l, and is imparted with a right-handed rotation behavior by a spring 9, and a downwardly bent portion 8a capable of engaging with the retaining portion 6b. 10.10 is an opening/closing lever that is provided with an upper bent portion 8b that a protruding piece 4C presses against from the right side, and rotates to the right to lock the opening/closing ring 6 when the AF set ring 4 rotates to the left; These are a pair of shutter blades connected to the ring 6 by pin-slot connection and opened and closed by turning the opening/closing ring 6 clockwise and counterclockwise. It is assumed that the elasticity of the return spring 3 is set to be stronger than the elasticity of the opening spring 7, and the elasticity of the spring 5 is set to be stronger than the elasticity of the spring 9. Reference numeral 11 denotes a first electromagnet fixed on the substrate 1, and 12 is a lower electromagnet which is pivotally mounted on the substrate 1 and which engages the upward folding convex portion 6a when turning the opening/closing ring 6 to the left. A closing drive lever 13 is provided with a bent part 12a and an iron piece 12b that is attracted to the first electromagnet IT, and is turned to the right when the iron piece 12b is attracted to the first electromagnet 11. A closing spring 14 that gives the lever 12 a right-handed turning ability is pivotally attached to the other arm of the closing drive lever 12, and a spring 15 stretched between the other arm and the other arm gives the lever 12 a right-handed turning ability. A ratchet pawl lever is provided with a pawl portion 14a that engages with the ratchet gear portion 4a and a downwardly bent portion 14b at the tip, and 16 is a base plate! a second electromagnet fixed on top, 1
Reference numeral 7 denotes an iron piece 17b which is pivotally mounted on the base Fi and 1, has an upper bent part 17a on one arm part, and is attracted to the second electromagnet 16.
and a ratchet gear part 4a at the tip of the other arm part.
A locking claw lever 1B provided with a claw portion 17c that engages with the
1 is a spring that imparts left-handed rotation behavior to the locking pawl lever 17;
Reference numeral 9 is pivotally mounted on the base plate l, and is given a left-handed rotation by a spring 2o, and has a claw portion 19a at its tip that can be engaged with the ratchet gear portion 2c, and a side edge that engages with the upper bent portion 17a. This is an AF locking pawl that is in contact with the locking pawl lever 17 and rotates left and right in response to right and left rotations of the locking pawl lever 17, so that the pawl portion 19a engages and disengages from the ratchet gear portion 2C. It is assumed that the elasticity of the closing spring 13 is set to be stronger than that of the opening spring 7, and that the elasticity of the spring 1B is set to be stronger than that of the spring 20.

SWば一接片がトリガースイッチ作動ビン6dと係接し
ていて開閉リング6の左旋によりOFFとなる常開型の
トリガースイッチであって、こ本ら電磁石11及び16
と共に後述の制御回路に組み込まれている。
SW is a normally open type trigger switch in which one contact piece is engaged with the trigger switch operating pin 6d and is turned OFF by left rotation of the opening/closing ring 6, and these electromagnets 11 and 16
It is also incorporated into the control circuit described later.

第2図は上記実施例の制御回路を示しており、21は合
焦に必要な距離値を算出するAF演算回路、22は該距
離値を記憶すると共に後述のパルス制御回路から出力さ
れるパルス数が該距離値に対応する数となった時に出力
がrHJレベルになるAFクラッチリーズ回路、T1は
ベース電圧がrHJレベルの時導通して第二1を磁石1
6をONにするトランジスタである。23は図示しない
受光素子による被写界輝度値と使用フィルムのフィルム
感度値とを演算して露出時間値を出力するAE演算回路
、Cは時間制御用のコンデンサ、COMは時間制御用の
コンパレータ、24はアンドゲートによるAE1i磁石
制御回路、T、はベース電圧がrHJレベルの時導通し
て第一電磁石11をONにするトランジスタ、Rは電流
制限用の抵抗である。25はパルス発生回路、26はパ
ルス発生回路25からの入力に応じてパルスを出力する
と共にAFラフチレリーズ回路22からの入力がrHJ
レベルになった時パルス出力を停止するパルス制御回路
、73Hパルス制御回路26からの人力に応じてON・
OFF動作を繰り返し第一電磁石11をパルス駆動する
トランジスタである。
FIG. 2 shows the control circuit of the above embodiment, where 21 is an AF calculation circuit that calculates a distance value necessary for focusing, and 22 is a pulse that stores the distance value and is output from a pulse control circuit that will be described later. AF clutch Lease circuit whose output becomes rHJ level when the number corresponds to the distance value, T1 conducts when the base voltage is rHJ level and connects the second 1 to the magnet 1
This is a transistor that turns on 6. 23 is an AE calculation circuit that calculates the field brightness value from a light receiving element (not shown) and the film sensitivity value of the film used and outputs an exposure time value; C is a capacitor for time control; COM is a comparator for time control; 24 is an AE1i magnet control circuit using an AND gate, T is a transistor that becomes conductive to turn on the first electromagnet 11 when the base voltage is at the rHJ level, and R is a current limiting resistor. 25 is a pulse generation circuit, 26 is a pulse generating circuit that outputs pulses according to the input from the pulse generation circuit 25, and the input from the AF rough release circuit 22 is rHJ.
A pulse control circuit that stops pulse output when the level is reached, and turns on and off according to human power from the 73H pulse control circuit 26.
This is a transistor that repeatedly turns off and drives the first electromagnet 11 in pulses.

本発明による電気シャッタは上述の如く構成されている
から、カメラのレリーズ操作の初期に図示しない電源ス
ィッチが閉じられると、111111回路が動作し、A
F演算回路21は必要な距離値を算出し、AFラフチレ
リーズ回路22は該距離値を記憶する。又、シャツタレ
リーズによりパルス発生回路25が動作を開始すると、
初期状態ではAFラッチレリーズ回路22の出力がrL
JレベルであるためA31i磁石制御回路24がrLJ
レベルにおかれ、一方パルス制御回路26はパルスを出
力し、その結果線パルスに従ってトランジスタTsが間
欠的にON・OFF動作を繰り返し、第3図に示した如
き波形の駆動パルスP1を出力する。従って、第一電磁
石11は駆動パルス、P+ により間欠動作し鉄片12
bの吸引動j乍を操り返すので、閉じ駆動レバー12が
右左旋し、これによりラチェツト爪レバーt4が第1r
yJ左右方向に往復動じ、これと係止爪レバー17の係
止作用によりAF上セツトング4をバネ5に抗して徐々
に左旋せしめて行く、すると、突出片4bが係接ピン2
aを押動するので、AF駆動リング2が戻りバネ3に抗
して徐々に左旋せしめられて行く、一方、AFセットリ
ング4の左旋に伴いその初期にシャツタレリーズレバー
8が左旋して開閉リング6を閉じ位置(セット位置)に
係止する。
Since the electric shutter according to the present invention is configured as described above, when the power switch (not shown) is closed at the beginning of the camera release operation, the 111111 circuit is activated and the A
The F calculation circuit 21 calculates a necessary distance value, and the AF rough release circuit 22 stores the distance value. Furthermore, when the pulse generation circuit 25 starts operating due to the shirt release,
In the initial state, the output of the AF latch release circuit 22 is rL.
Since it is at J level, the A31i magnet control circuit 24 is rLJ.
On the other hand, the pulse control circuit 26 outputs a pulse, and as a result, the transistor Ts repeats the ON/OFF operation intermittently according to the line pulse, and outputs a driving pulse P1 having a waveform as shown in FIG. Therefore, the first electromagnet 11 is intermittently operated by the driving pulse P+, and the iron piece 12
Since the suction movement j of step b is reversed, the closing drive lever 12 rotates to the right and left, which causes the ratchet pawl lever t4 to move to the first r.
YJ reciprocates in the left-right direction, and due to this and the locking action of the locking pawl lever 17, the AF upper setting tongue 4 is gradually rotated to the left against the spring 5. Then, the protruding piece 4b engages the locking pin 2.
As the AF drive ring 2 is pushed and moved, the AF drive ring 2 is gradually rotated to the left against the return spring 3. On the other hand, as the AF set ring 4 is rotated to the left, the shirt release lever 8 is initially rotated to the left to open and close. Lock the ring 6 in the closed position (set position).

次に、パルス制御回路26から出力されるパルス数が上
記距離値に対応する数になるとへFラフチレリーズ回路
22の出力がrHJレベルとなるので、パルス制御回路
26は出力を停止し、代りにAFIII3石制御回路2
4の出力がrHJレベルとなりトランジスタTtがON
となる。従って、電磁石11に作用する電流は抵抗Rの
作用により第3図に示した如く低電流(最終パルスpg
)となり、鉄片12bが第一電磁石11に吸着されて閉
じ駆動レバー12が右旋位置をとる(第4図)ので、開
閉リング6は左旋可能な状態となる。一方、APラフチ
レリーズ回M22の出力がrHJレベルとなるので、ト
ランジスタTlがONとなる。従って、第二電磁石16
がONとなって鉄片17bを吸着・保持するので、係止
爪レバー17が右旋すると同時にAF係止爪19が左旋
する。その結果、第4図に示した如<AF係止爪19の
爪部19bがラチェットギヤ部2cに係合してAF駆動
リング2をパルス数に対応した調定位置(セット位置)
に保持する。一方、係止爪レバー17がその爪部17c
をラチェットギヤ部4aから離脱すると共にラチェツト
爪レバー14の爪部14aも該ギヤ部4aから離脱せし
めるので、AF上セツトング4がバネ5により右旋し、
その突出片4Cが上方折曲部8bを押動することにより
レリーズレバ−8を左旋せしめ開閉リング6に対する係
止が解除される。従って、第5図に示した如く開閉リン
グ6は開きバネ7により右旋せしめられ”てシャッタ羽
mlo、10を開き、露出が開始される。
Next, when the number of pulses output from the pulse control circuit 26 reaches the number corresponding to the above-mentioned distance value, the output of the AF rough release circuit 22 becomes rHJ level, so the pulse control circuit 26 stops outputting and instead Stone control circuit 2
The output of 4 becomes rHJ level and transistor Tt turns on.
becomes. Therefore, the current acting on the electromagnet 11 is a low current (final pulse pg
), the iron piece 12b is attracted to the first electromagnet 11, and the closing drive lever 12 assumes a clockwise rotation position (FIG. 4), so that the opening/closing ring 6 is able to rotate counterclockwise. On the other hand, since the output of the AP rough release circuit M22 is at the rHJ level, the transistor Tl is turned on. Therefore, the second electromagnet 16
is turned on and attracts and holds the iron piece 17b, so that the locking pawl lever 17 rotates to the right and at the same time the AF locking pawl 19 rotates to the left. As a result, as shown in FIG. 4, the pawl portion 19b of the AF locking pawl 19 engages with the ratchet gear portion 2c, and the AF drive ring 2 is moved to the adjusted position (set position) corresponding to the number of pulses.
to hold. On the other hand, the locking claw lever 17 has its claw portion 17c.
is removed from the ratchet gear portion 4a, and the claw portion 14a of the ratchet claw lever 14 is also removed from the gear portion 4a, so that the AF upper setting tongue 4 is rotated to the right by the spring 5.
When the protruding piece 4C pushes the upper bent portion 8b, the release lever 8 is rotated to the left and the engagement with the opening/closing ring 6 is released. Therefore, as shown in FIG. 5, the opening/closing ring 6 is rotated to the right by the opening spring 7 to open the shutter blades mlo and 10, and exposure is started.

一方、開閉リング6の左旋によりトリガースイッチSW
がOFFとなるので、A’ E演算回路23からの露出
時間値に対応してコンデンサCの充電が開始され、適正
露出となるべき秒時が経過するとコンパレータCOMの
出力がrLJレベルへ反転し、AE1tift石制御回
路24の出力がrLJレベルとなってトランジスタT!
がOFFとなる。
On the other hand, by turning the opening/closing ring 6 to the left, the trigger switch SW
is turned OFF, charging of the capacitor C is started in accordance with the exposure time value from the A'E calculation circuit 23, and when the time required for proper exposure has elapsed, the output of the comparator COM is inverted to the rLJ level. The output of the AE1tift stone control circuit 24 becomes rLJ level and the transistor T!
becomes OFF.

従って、第一電磁石11がOFFとなり、閉じ駆動レバ
ー12が閉じバネ13により左旋位置に戻るので、開閉
リング6は右旋して閉じ位置に戻りシャッタ羽mto、
toを閉じ、露出が終了する。
Therefore, the first electromagnet 11 is turned OFF, and the closing drive lever 12 is returned to the counterclockwise position by the closing spring 13, so that the opening/closing ring 6 is clockwise and returned to the closed position, and the shutter blade mto,
Close to and end the exposure.

最後に各制御回路への給電がOFFになると第二1を磁
石16がOFFとなるので、係止爪レバー17が左旋し
てその爪部17cがラチェットギヤ部4aに係合し且つ
ラチェツト爪レバー14の爪部14aも該ギヤ部4 、
aに係合すると同時に、AF係止爪19が右旋してその
爪部19aがラチェットギヤ部2cから離脱し、その結
果AF駆動リング2は戻しバネ3により右旋して元の位
置に戻る。
Finally, when the power supply to each control circuit is turned OFF, the second magnet 16 is turned OFF, so the locking pawl lever 17 rotates to the left, its pawl portion 17c engages with the ratchet gear portion 4a, and the ratchet pawl lever The claw portion 14a of 14 also corresponds to the gear portion 4,
At the same time, the AF locking pawl 19 rotates to the right and the pawl portion 19a disengages from the ratchet gear portion 2c, and as a result, the AF drive ring 2 rotates to the right by the return spring 3 and returns to its original position. .

l見勿羞見 上述の如く、本発明による電気シャッタは、A夕機構の
11峨石をAF機構の1!磁石に兼用すると共に、レリ
ーズ操作の初期の段階でAF%I動部材のセット及びシ
ャッタ羽根開閉部材のセットを自動的に行うようにして
いるので、AF機構及びAE機構の両方共を少ない部品
構成でセットレスにすることができる。
As mentioned above, in the electric shutter according to the present invention, the 11th point of the AF mechanism is replaced by the 1st point of the AF mechanism. In addition to serving as a magnet, the AF%I moving member and shutter blade opening/closing member are automatically set at the initial stage of the release operation, so both the AF mechanism and AE mechanism can be configured with fewer parts. can be made setless.

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

第1図は本発明による電気ンヤソタの一実施例の構造を
示す平面図、第2図は上記実施例の制御回路を示すブロ
ック図、第3図は上記実施例の制御電流の波形図、第4
図及び第5図は上記実施例の開き行程を示す平面図であ
る。 101.基板、2.・・・AF%I動リンプリング・・
・戻シバ、ネ、4・・・・AF上セツトング、5・・・
・バネ、6・・・・開閉リング、7・・・・開きバネ、
8・・・・シャフタレリーズレバ−19・・・・バネ、
1o・・・・シャフタ羽橿、11・・・・第一電磁石、
12・・・・閉じ駆動レバー、13・・・・閉じバネ、
14・・・・ラチェツト爪レバー、15・・・・バネ、
16・・、・第二電磁石、17・・・・係止爪レバー、
18・・・・バネ、19・・・・AF係止爪、20・・
・・バネ、21・・・・AF演算回路、22・・・・A
Fラッチレリーズ回路、23・・・・AE演算回路、2
4・・・・AEli磁石制御回路、25・・・・パルス
発生回路、26・・・・)iルス制御回路。 オl 図
FIG. 1 is a plan view showing the structure of one embodiment of the electric power converter according to the present invention, FIG. 2 is a block diagram showing the control circuit of the above embodiment, FIG. 3 is a waveform diagram of the control current of the above embodiment, and FIG. 4
FIG. 5 is a plan view showing the opening stroke of the above embodiment. 101. Substrate, 2. ...AF%I dynamic limp ring...
・Return, turn, 4... AF upper setting, 5...
・Spring, 6...Opening/closing ring, 7...Opening spring,
8...Shafter release lever-19...Spring,
1o...Shafta blade, 11...first electromagnet,
12... Closing drive lever, 13... Closing spring,
14... Ratchet pawl lever, 15... Spring,
16...Second electromagnet, 17...Latching claw lever,
18... Spring, 19... AF locking claw, 20...
...Spring, 21...AF calculation circuit, 22...A
F latch release circuit, 23...AE calculation circuit, 2
4...AEli magnet control circuit, 25...pulse generation circuit, 26...) i pulse control circuit. Figure

Claims (1)

【特許請求の範囲】[Claims] 戻り力源が付与されたAF駆動部材と、開放力源が付与
されたシャッタ羽根開閉部材と、パルス駆動により前記
AF駆動部材を戻り力源に抗して駆動し且つパルス駆動
の初期に前記シャッタ羽根開閉部材を閉じ位置(セット
位置)に係止すると共に最終パルスの立下りにより前記
シャッタ羽根開閉部材を閉じ位置に戻す第一電磁石と、
最終パルスの立上りに対応して前記AF駆動部材を調定
位置(セット位置)に保持し且つ前記シャッタ羽根開閉
部材の係止を解除する第二電磁石とを具備し、パルス数
の変化によりAE制御を行い且つ最終パルス長の変化に
よりAF制御を行うようにした、カメラ用のAF制御機
構を備えた電気シャッタ。
an AF drive member provided with a return force source; a shutter blade opening/closing member provided with an opening force source; a first electromagnet that locks the shutter blade opening/closing member in a closed position (set position) and returns the shutter blade opening/closing member to the closed position upon the fall of a final pulse;
and a second electromagnet that holds the AF drive member at the adjustment position (set position) and releases the lock of the shutter blade opening/closing member in response to the rise of the final pulse, and controls the AE by changing the number of pulses. An electric shutter equipped with an AF control mechanism for a camera, which performs AF control by changing the final pulse length.
JP27966184A 1984-12-29 1984-12-29 Electric shutter provided with af control mechanism for camera Pending JPS61158318A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27966184A JPS61158318A (en) 1984-12-29 1984-12-29 Electric shutter provided with af control mechanism for camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27966184A JPS61158318A (en) 1984-12-29 1984-12-29 Electric shutter provided with af control mechanism for camera

Publications (1)

Publication Number Publication Date
JPS61158318A true JPS61158318A (en) 1986-07-18

Family

ID=17614092

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27966184A Pending JPS61158318A (en) 1984-12-29 1984-12-29 Electric shutter provided with af control mechanism for camera

Country Status (1)

Country Link
JP (1) JPS61158318A (en)

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