ELECTRIC DRIVING DEVICE FOR CAMERA

PURPOSE:To execute the operation of a film and the operation for a focusing by detecting specified torque at the time of completing the taking-up of all the film, linking a 1st planetary clutch mechanism with a film rewinding mechanism and changing the focal distance variably by means of a 2nd plane...

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Bibliographic Details
Main Authors HIRAI MASAYOSHI, ONOZUKA HARUO, TAKAMURA MASASHI, NISHIZAWA TETSUO, ONDA KAZUHIKO
Format Patent
LanguageEnglish
Published 13.03.1989
Subjects
ACCESSORIES THEREFOR
APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM
CINEMATOGRAPHY
ELECTROGRAPHY
HOLOGRAPHY
PHOTOGRAPHY
PHYSICS
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Summary:PURPOSE:To execute the operation of a film and the operation for a focusing by detecting specified torque at the time of completing the taking-up of all the film, linking a 1st planetary clutch mechanism with a film rewinding mechanism and changing the focal distance variably by means of a 2nd planetary clutch. CONSTITUTION:With the normal rotation of a motor 10, the planetary gear 30 of a 1st planet clutch mechanism is made to mesh with the gear 32 of a film taking-up mechanism. And when the rotation is prevented by a film end, the gear 30 is made to mesh with the gear 34 of the rewinding mechanism with the rotational force of the motor 10 and that of an arm. When the engagement of a pin 40 with an arm 28 by operating an engaging lever 38 from the external part of a camera is released, manual taking-up is executed with a motor 10. And when the motor 10 is made to inversely rotate, the planetary gear 74 of a 2nd planetary clutch mechanism is made to mesh with the gear 80 of a focusing switching mechanism, so that a lens barrel is drawn out and the focusing is altered.
Bibliography:Application Number: JP19870223656