| 摘要 |
PURPOSE:To transmit AE driving force through the rotation of a coupling member of simple structure, and to improve transmission precision, by separating a transmission mechanism in a shutter speed priority exposure control camera into a part parallel to an accessary attached surface and a part perpendicular to it. CONSTITUTION:When the AE coupler of an electric driver rotates clockwise on releasing, the engaging AE coupler 7 of the camera also rotates clockwise and a sector gear 115 also rotates clockwise through a two-stage gear 116. Consequently, the tip of the gear 115 drives a charging gear 109 to rotate a cam gear 105, and a swing arm 102 and a diaphragm signal lever 101 are driven upwardly to rotate a preset ring 123 counterclockwise against a return spring 124. On the other hand, the rotation of the cam gear 105 rotates a diaphragm signal brush 107 counterclockwise and when a resistance value attains to an adequate diaphragm equivalent value, the rotation of the AE coupler is stopped, thereby obtaining the adequate diaphragm value under shutter speed priority exposure control. |
