JPS58178120U - Electromagnetic drive program shutter - Google Patents
Electromagnetic drive program shutterInfo
- Publication number
- JPS58178120U JPS58178120U JP7581682U JP7581682U JPS58178120U JP S58178120 U JPS58178120 U JP S58178120U JP 7581682 U JP7581682 U JP 7581682U JP 7581682 U JP7581682 U JP 7581682U JP S58178120 U JPS58178120 U JP S58178120U
- Authority
- JP
- Japan
- Prior art keywords
- shutter
- drive
- short
- drive coil
- circuit
- 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図は本考案による電磁駆動プログラムシャッターの
平面図。第２図は第１図の線■＝Ｈによる断面図。第３
図はシャッター羽根の駆動プリントコイルを示す平面図
。第４図は本考案による制御回路の実施例を示す回路図
。第５図は第４図の回路の特性を示す線図。第６図は第
４図の他の実施例を示す回路図。第７図は第６図の回路
の特性を示す線図。FIG. 1 is a plan view of an electromagnetically driven programmable shutter according to the present invention. FIG. 2 is a sectional view taken along the line ■=H in FIG. 1. Third
The figure is a plan view showing the printed coil that drives the shutter blade. FIG. 4 is a circuit diagram showing an embodiment of the control circuit according to the present invention. FIG. 5 is a diagram showing the characteristics of the circuit shown in FIG. 4. FIG. 6 is a circuit diagram showing another embodiment of FIG. 4. FIG. 7 is a diagram showing the characteristics of the circuit shown in FIG. 6.
Claims (3)
制御回路により発生される所定時間の駆動パフ１スを与
えられることにより永久磁石と協働して前記駆動ばねの
作用に抗して電磁的にシャッター羽根に所定絞り開口ま
で開き作動を与えるためシャツ多−羽根に設けられた駆
動コイルとを有する電磁駆動プログラムシャッタ、−に
おいて、駆動コイルに与えられた駆動パルスが消滅した
後所定晴間駆動コイルを短絡して駆動コイルに生ずる起
動力により制動電流を生じさせてシャッター羽根の作動
を安定化させるための短絡回路を設けたことを特徴とす
る電磁駆動プログラムシャッター。(1) a drive spring that closes the shutter blade;
By applying a drive puff of a predetermined time period generated by a control circuit, the shirt works in cooperation with a permanent magnet to electromagnetically cause the shutter blades to open to a predetermined aperture opening against the action of the drive spring. In an electromagnetically driven programmable shutter having a multi-blade drive coil, the drive coil is short-circuited for a predetermined period of time after the drive pulse applied to the drive coil disappears, and a braking current is generated by the starting force generated in the drive coil. An electromagnetically driven program shutter characterized by being provided with a short circuit for stabilizing the operation of shutter blades.
もシャッター羽根がその時の最大口径に達する開駆動コ
イルを短絡するように構成されている実用新案登録請求
の範囲第（１）項記載の電磁作動プログラムシャッター
。(2) The electromagnetic actuation according to claim 1, wherein the short-circuit path is configured to short-circuit the open drive coil at least when the shutter blade reaches its maximum aperture after the drive pulse disappears. Program shutter.
ー羽根が開き作動を続けている間の駆動コイルに生ずる
起電力を検知してその時の最大口径に達するまで駆動コ
イルを短絡するように構成されている実用新案登録請求
の範囲第（１）項記載の電磁駆動プログラムシャッター
。(3) The short-circuit circuit is configured to detect an electromotive force generated in the drive coil while the shutter blade continues to open and operate after the drive pulse disappears, and short-circuits the drive coil until the maximum aperture at that time is reached. An electromagnetically driven programmable shutter according to claim (1) of the utility model registration claim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7581682U JPS58178120U (en) | 1982-05-24 | 1982-05-24 | Electromagnetic drive program shutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7581682U JPS58178120U (en) | 1982-05-24 | 1982-05-24 | Electromagnetic drive program shutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58178120U true JPS58178120U (en) | 1983-11-29 |
| JPS6239373Y2 JPS6239373Y2 (en) | 1987-10-07 |
Family
ID=30085152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7581682U Granted JPS58178120U (en) | 1982-05-24 | 1982-05-24 | Electromagnetic drive program shutter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58178120U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5393020A (en) * | 1977-01-26 | 1978-08-15 | Copal Co Ltd | Camera shutter system |
| JPS56115130U (en) * | 1980-02-06 | 1981-09-04 |
-
1982
- 1982-05-24 JP JP7581682U patent/JPS58178120U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5393020A (en) * | 1977-01-26 | 1978-08-15 | Copal Co Ltd | Camera shutter system |
| JPS56115130U (en) * | 1980-02-06 | 1981-09-04 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6239373Y2 (en) | 1987-10-07 |
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