JPS55120023A - Movable mirror opening and closing device of single lens reflex camera - Google Patents

Movable mirror opening and closing device of single lens reflex camera

Info

Publication number
JPS55120023A
JPS55120023A JP2700579A JP2700579A JPS55120023A JP S55120023 A JPS55120023 A JP S55120023A JP 2700579 A JP2700579 A JP 2700579A JP 2700579 A JP2700579 A JP 2700579A JP S55120023 A JPS55120023 A JP S55120023A
Authority
JP
Japan
Prior art keywords
movable mirror
electromagnetic switch
stopper
charge
release
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
JP2700579A
Other languages
Japanese (ja)
Inventor
Masaaki Wada
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.)
Nippon Seimitsu Kogyo KK
Original Assignee
Nippon Seimitsu Kogyo KK
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 Nippon Seimitsu Kogyo KK filed Critical Nippon Seimitsu Kogyo KK
Priority to JP2700579A priority Critical patent/JPS55120023A/en
Publication of JPS55120023A publication Critical patent/JPS55120023A/en
Pending legal-status Critical Current

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  • Cameras In General (AREA)

Abstract

PURPOSE: To save power consumption and miniaturize an electromagnetic swtich, by performing opening and resetting operation of movable mirror by intermittent repetitive operations of one electromagnetic switch when taking photograph, and eliminating continuous operation of the electromagnetic switch when opening it.
CONSTITUTION: When an electromagnetic switch 11 is closed by operation of a release button, an operating element 11' moves to the right, and a release stopper 8 is disengaged from a mirror control piece 4, so that the mirror control piece 4 and movable mirror 2 are rotated in the direction of arrow by means of a spring 6 to open the optical axis and to reset the release stopper 8 into the original state. When the shutter is closed after taking photograph, the electromagnetic switch 11 operates again, and the release stopper 8 moves. In consequence, a brake lever 10 and a charge stopper 9 being engaged therewith are rotated in the direction of arrow by a spring 15 to disengage the charge piece 5, so that the movable mirror 2 closes the optical axis. Then, when a film winding-up motor 22 is driven, the charge cam operates to return all the operating members into the original state.
COPYRIGHT: (C)1980,JPO&Japio
JP2700579A 1979-03-07 1979-03-07 Movable mirror opening and closing device of single lens reflex camera Pending JPS55120023A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2700579A JPS55120023A (en) 1979-03-07 1979-03-07 Movable mirror opening and closing device of single lens reflex camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2700579A JPS55120023A (en) 1979-03-07 1979-03-07 Movable mirror opening and closing device of single lens reflex camera

Publications (1)

Publication Number Publication Date
JPS55120023A true JPS55120023A (en) 1980-09-16

Family

ID=12208998

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2700579A Pending JPS55120023A (en) 1979-03-07 1979-03-07 Movable mirror opening and closing device of single lens reflex camera

Country Status (1)

Country Link
JP (1) JPS55120023A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005331698A (en) * 2004-05-20 2005-12-02 Sigma Corp Mirror quick return mechanism for single-lens reflex camera
CN102109743A (en) * 2009-12-25 2011-06-29 Hoya株式会社 Reflector drive apparatus incorporating brake mechanism of slr camera

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005331698A (en) * 2004-05-20 2005-12-02 Sigma Corp Mirror quick return mechanism for single-lens reflex camera
CN102109743A (en) * 2009-12-25 2011-06-29 Hoya株式会社 Reflector drive apparatus incorporating brake mechanism of slr camera

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