JPS55159420A - Electromagnetically driven shutter - Google Patents

Electromagnetically driven shutter

Info

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
Application number
JP6338479A
Other languages
Japanese (ja)
Inventor
Takashi Uchiyama
Tetsuya Taguchi
Mitsutoshi Ogiso
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP6338479A priority Critical patent/JPS55159420A/en
Publication of JPS55159420A publication Critical patent/JPS55159420A/en
Pending legal-status Critical Current

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
JP6338479A 1979-05-23 1979-05-23 Electromagnetically driven shutter Pending JPS55159420A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0219118U (en) * 1988-07-22 1990-02-08

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0219118U (en) * 1988-07-22 1990-02-08

Similar Documents

Publication Publication Date Title
GB2295279A (en) Linesr magnetic actuator
WO1991010242A3 (en) Magnetic drive with permanent-magnet solenoid armature
ZA893610B (en) Electromagnetic actuators
DE3364406D1 (en) Magnetic device, particularly for handling
JPS55159420A (en) Electromagnetically driven shutter
JPS55144216A (en) Electromagnetically driven slit exposure shutter
JPS5528086A (en) Electromagnetically driven shutter device
JPS5597172A (en) Face-opposed motor
TW225055B (en) Miniature motor
JPS54108161A (en) Magnetic fluid seal
JPS56122107A (en) Electromagnetic driving device
JPS55159419A (en) Electromagnetic drive device provided with energizing means
JPS5716563A (en) Electromagnetic actuator
JPS56122111A (en) Magnetizing device
JPS55136867A (en) Magnetic power machine
JPS55122470A (en) Electromagnetic driving device
JPS6488524A (en) Electromagnetic actuator for driving shutter
JPS5674081A (en) Driving method of motor using permanent magnet
JPS5631368A (en) Revolution transmitting device for tape recorder
JPS5671466A (en) Rotary electromagnet
JPS5722463A (en) Magnetic cylinder
JPS5734763A (en) Electromagnetic drive device
JPS55114172A (en) Electromagnetic drive machine
JPS5641766A (en) Electromagnetic driving device
JPS5588564A (en) Electromagnet for rotary device of confronting permanent magnet