JPS6440933A - Motor-driven stop device - Google Patents

Motor-driven stop device

Info

Publication number
JPS6440933A
JPS6440933A JP19772987A JP19772987A JPS6440933A JP S6440933 A JPS6440933 A JP S6440933A JP 19772987 A JP19772987 A JP 19772987A JP 19772987 A JP19772987 A JP 19772987A JP S6440933 A JPS6440933 A JP S6440933A
Authority
JP
Japan
Prior art keywords
gear plate
stop
gear
motor
restrained
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
JP19772987A
Other languages
Japanese (ja)
Inventor
Mitsuo Hoshino
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP19772987A priority Critical patent/JPS6440933A/en
Publication of JPS6440933A publication Critical patent/JPS6440933A/en
Pending legal-status Critical Current

Links

Landscapes

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Abstract

PURPOSE:To reduce the size and weight of a motor-driven stop device and to control the stop tool closely by forming a 1st gear plate of a magnetic body and eliminating the need to arrange a magnet on a surface facing a 2nd gear plate, and driving the stop tool through the differential rotation between the 1st and 2nd gear plates. CONSTITUTION:When a control current flows through winding 16 in order, magnetic flux is produced in the axial direction of the 2nd gear plate 15 to attract the 1st gear plate 11 and 2nd gear plate 15, and a 1st tooth part 11b and a 2nd tooth part 15a engage each other in order. Then the 1st and 2nd gear plates 11 and 15 differ in the number of teeth and one is restrained from rotating, so the other gear plate which is restrained rotates to drive the stop tool 18, thereby opening and closing an optical path through the sliding of stop blades. Further, the 1st gear plate 11 is made of the discoid annular magnetic body and a magnet need not be arranged separately, so the whole device never increases in size axially.
JP19772987A 1987-08-07 1987-08-07 Motor-driven stop device Pending JPS6440933A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19772987A JPS6440933A (en) 1987-08-07 1987-08-07 Motor-driven stop device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19772987A JPS6440933A (en) 1987-08-07 1987-08-07 Motor-driven stop device

Publications (1)

Publication Number Publication Date
JPS6440933A true JPS6440933A (en) 1989-02-13

Family

ID=16379370

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19772987A Pending JPS6440933A (en) 1987-08-07 1987-08-07 Motor-driven stop device

Country Status (1)

Country Link
JP (1) JPS6440933A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004205967A (en) * 2002-12-26 2004-07-22 Canon Electronics Inc Light quantity adjusting device and optical equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004205967A (en) * 2002-12-26 2004-07-22 Canon Electronics Inc Light quantity adjusting device and optical equipment

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