JPS5865024U - Electromagnetic drive shutter - Google Patents
Electromagnetic drive shutterInfo
- Publication number
- JPS5865024U JPS5865024U JP15980081U JP15980081U JPS5865024U JP S5865024 U JPS5865024 U JP S5865024U JP 15980081 U JP15980081 U JP 15980081U JP 15980081 U JP15980081 U JP 15980081U JP S5865024 U JPS5865024 U JP S5865024U
- Authority
- JP
- Japan
- Prior art keywords
- shutter blade
- permanent magnet
- sector ring
- shutter
- energized
- 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.)
- Granted
Links
Landscapes
- Shutters For Cameras (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案を組込むに適した電磁駆動シャッターの
要部を示す平面図。第２図は第１図の変形形態の平面図
。第３図は本考案によるシャッター羽根閉じ検出信号発
生回路を示す回路図。第４図は第３図の各出力のタイム
チャート。第５図は本考案のシャッター羽根閉じ検出信
号発生回路を組込むに適したカメラのシーケンス作動制
御回路を示す回路図。
１・・・・・・シャッター羽根、２・・・・・・セクタ
ーリング、４・・・・・・地板、６・・・・・・電磁駆
動モーター、７・・・・・・開き用ばね、８・・・・・
・電磁ホールド手段即ち複合マグネット、８ａ・・・・
・・永久磁石、８ｂ・・・・・・組合せコイル、９・・
・・・・永久磁石、１１・・・・・・可動コイル、１４
・・・・・・露出制御回路、１６・・・・・・ワラショ
ット回路、１７．１９・・・・・・トランジスター、２
０・・・・・・アンド回路、２６・・・・・・シャッタ
ー回路、Ｄ・・・・・・シャッター羽根閉じ検出信号発
生回路、Ｆ・・・・・・フィルム、Ｌ・・・・・・レン
ズ、Ｓ・・・・・・シャッター。
第３図FIG. 1 is a plan view showing the main parts of an electromagnetically driven shutter suitable for incorporating the present invention. FIG. 2 is a plan view of a modification of FIG. 1. FIG. 3 is a circuit diagram showing a shutter blade closing detection signal generation circuit according to the present invention. FIG. 4 is a time chart of each output in FIG. 3. FIG. 5 is a circuit diagram showing a sequence operation control circuit of a camera suitable for incorporating the shutter blade closing detection signal generation circuit of the present invention. 1... Shutter blade, 2... Sector ring, 4... Main plate, 6... Electromagnetic drive motor, 7... Opening spring. , 8...
・Electromagnetic holding means, ie, composite magnet, 8a...
...Permanent magnet, 8b...Combination coil, 9...
...Permanent magnet, 11...Movable coil, 14
...Exposure control circuit, 16... Walla shot circuit, 17.19... Transistor, 2
0...AND circuit, 26...Shutter circuit, D...Shutter blade closing detection signal generation circuit, F...Film, L...・Lens, S... Shutter. Figure 3
Claims (1)
よって常時附勢されているセクターリングを前記開き用
ばねの作用に抗してシャッター羽根の閉じ位置に保持す
る電磁ホールド手段を含み、前記ホールド手段が前記セ
クターリングをシャッター羽根閉じ位置に吸着保持する
磁力を有する永久磁石と、制御回路によってレリーズ信
号が発された時に附勢されることにより前記永久磁石の
磁力を減殺して前記永久磁石によるセクターリングの吸
着保持を解除するように附勢可能の組合せコイルとより
成っていて、さらにまた前記レリーズ信号により作動さ
れて前記制御回路により計ｆｉｌｊ６れた所定露出時間
経過後に発出されるシャッター羽根閉じ信号により附勢
されて前記セクターリングをシャッター羽根の開き位置
から閉じ位置に動かすように該セクターリングを駆動す
る電磁駆動手段を含む電磁駆動シャッターにおいて、前
記セクターリングが前記電磁駆動手段によりシャッター
羽根閉じ位置に動かされた時に前記永久磁石に当接して
該永久磁石の磁界を変化させることにより前記組合せコ
イルに誘起させる電圧と前記シャッター羽根閉じ信号と
をともに入力した時にのみシャッター羽根閉じ検出信号
を発する回路を含むことを特徴とする電磁駆動シャッタ
ー。an electromagnetic holding means for holding a sector ring, which is always energized by an opening spring so as to move the shutter blade to an open position, in a closed position of the shutter blade against the action of the opening spring; A permanent magnet having a magnetic force that attracts and holds the sector ring in the shutter blade closed position, and a sector ring made of the permanent magnet that is energized when a release signal is issued by a control circuit to reduce the magnetic force of the permanent magnet. and a combination coil that can be energized to release the suction hold of the shutter blade, and further by a shutter blade closing signal activated by the release signal and issued after a predetermined exposure time calculated by the control circuit. An electromagnetic drive shutter including an electromagnetic drive means for driving the sector ring when energized to move the sector ring from a shutter blade open position to a shutter blade closed position, wherein the sector ring is moved to a shutter blade closed position by the electromagnetic drive means. A circuit that generates a shutter blade closing detection signal only when a voltage induced in the combination coil by coming into contact with the permanent magnet and changing the magnetic field of the permanent magnet when moved and the shutter blade closing signal are input together. An electromagnetically driven shutter comprising:
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15980081U JPS5865024U (en) | 1981-10-27 | 1981-10-27 | Electromagnetic drive shutter |
| US06/436,567 US4494846A (en) | 1981-10-27 | 1982-10-25 | Electromagnetic shutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15980081U JPS5865024U (en) | 1981-10-27 | 1981-10-27 | Electromagnetic drive shutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5865024U true JPS5865024U (en) | 1983-05-02 |
| JPS6220824Y2 JPS6220824Y2 (en) | 1987-05-27 |
Family
ID=29952245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15980081U Granted JPS5865024U (en) | 1981-10-27 | 1981-10-27 | Electromagnetic drive shutter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5865024U (en) |
-
1981
- 1981-10-27 JP JP15980081U patent/JPS5865024U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6220824Y2 (en) | 1987-05-27 |
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