JPS55159420A - Electromagnetically driven shutter - Google Patents
Electromagnetically driven shutterInfo
- Publication number
- JPS55159420A JPS55159420A JP6338479A JP6338479A JPS55159420A JP S55159420 A JPS55159420 A JP S55159420A JP 6338479 A JP6338479 A JP 6338479A JP 6338479 A JP6338479 A JP 6338479A JP S55159420 A JPS55159420 A JP S55159420A
- Authority
- JP
- Japan
- Prior art keywords
- blades
- split
- shutter
- magnetization
- stopping
- 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
- Exposure Control For Cameras (AREA)
- Diaphragms For Cameras (AREA)
- Shutters For Cameras (AREA)
Abstract
PURPOSE: To prevent the influence by the magnetization of split shutter blades and enable smooth driving by forming the electromagnetically driven shutter blades by nonmagnetic material.
CONSTITUTION: Permanent magnets 1... which are turnable about axis 1a... by the electromagnetic force of the electromagnet 2 provided with electromagnetic coils L... and the elastic force of the springs 5 connected to a connecting ring 3 are started at a high speed with low electric power and while stopping, they are applied with the required brake, whereby the plural split shutter blades 9... for which the connecting ring 3 turning and stopping in cooperation with the said magnets is a driving source, are controlled. Since these blades 9... are formed of nonmagnetic material, they are not magnetized and the interference owing to the repulsion and attraction by magnetization between the blades 9... does not occur, thus the split blades are smoothly dirven. Here, if the split blades are formed by aluminum, plastic material, etc., the shutter becomes lighter in weight and driving electric power may be reduced.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6338479A JPS55159420A (en) | 1979-05-23 | 1979-05-23 | Electromagnetically driven shutter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6338479A JPS55159420A (en) | 1979-05-23 | 1979-05-23 | Electromagnetically driven shutter |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP51004195 Division |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55159420A true JPS55159420A (en) | 1980-12-11 |
Family
ID=13227740
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6338479A Pending JPS55159420A (en) | 1979-05-23 | 1979-05-23 | Electromagnetically driven shutter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55159420A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0219118U (en) * | 1988-07-22 | 1990-02-08 |
-
1979
- 1979-05-23 JP JP6338479A patent/JPS55159420A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0219118U (en) * | 1988-07-22 | 1990-02-08 |
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