CAMERA TORQUE DETECTOR

PURPOSE:To smoothly and surely switch a power transmission route from a film winding system to its rewinding system by establishing a releasable engaging relation between a lock-stopper and a switch lever since the lock-stopper, which is loaded in the direction of compression, restrains the switch l...

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Bibliographic Details
Main Authors HIRAI MASAYOSHI, TAKAMURA MASASHI, NISHIZAWA TETSUO, ONDA KAZUHIKO
Format Patent
LanguageEnglish
Published 27.09.1989
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 smoothly and surely switch a power transmission route from a film winding system to its rewinding system by establishing a releasable engaging relation between a lock-stopper and a switch lever since the lock-stopper, which is loaded in the direction of compression, restrains the switch lever from turning. CONSTITUTION:When a film is completely wound up with the planetary gear 22 of a change-over planetary clutch mechanism 20 meshing with a winding gear 24, a torque detecting lever 33 detects the specified torque to displace the lock-stopper 40 while resisting an energizing means. The lock-stopper 40 is subjected to the turning force of the stretch lever 26 in the direction of its compression: therefore, when the lock-stopper is displaced by any force other than the frictional force which acts on the surface where the stopper is engaged with the switch lever 26, does not restrain it from being displaced. When the lock-stopper 40 is displaced, its engagement with the stretch lever 26 is released, and consequently the stretch lever 26 is not restrained by any means; ultimately the switch lever 26 receives turning force for turning. Switching the power transmitting route from the film winding-up state to its rewinding state, can thereby be executed readily.
Bibliography:Application Number: JP19880070100