| 摘要 |
PURPOSE:To obtain the stepping-motor driven focusing photography device of simple constitution. CONSTITUTION:A driving ring 7 is driven by a stepping motor 1 to drive a focusing ring 8 by the anticlockwise swivel of the driving ring 7 through a focusing ring 8, which is engaged with a hook claw 10; and then the driving ring 7 swivels clockwise to swivel a shutter driving lever 11 anticlockwise by a cam part 7c through a pin 11b and thus a shutter blade is closed. The driving ring 7 is swiveled anticlockwise a predetermined time later to close the shutter blade, the focusing ring 8 is released from being locked by the hook claw 10, and then the focusing ring 8 also returns to its initial position by the anticlockwise swivel of the driving ring 7 together with the driving ring 7. |
