| 摘要 |
FIELD: photographic equipment. SUBSTANCE: proposed unit has roller positioned between plate and case of camera and including upper and lower pulleys, drum, axle and first gear wheel, first blind put on casing of camera shutter, second blind anchored on drum of roller, second gear wheel put on plate. Unit is also fitted with holder and carrier. Holder has strap to keep second blind in pulled-up position independent of first blind and to limit rotation of drum through second revolution. Axle of roller is mounted for rotation in hole of holder. Carrier having flange is put on axle of roller. Flange engages groove of drum of roller via groove of upper pulley. Unit is also provided with pin mounted immobile on plate for interaction with groove of second gear wheel and for limitation of initial position of roller and of first blind. EFFECT: enhanced functional reliability due to simplification of design. 1 dwg |
