| 摘要 |
PURPOSE:To reduce the product cost and to attain light weight, by using a drive source of a recorder part of a VTR or the like in common to that of an image pickup section. CONSTITUTION:A gear 103 is rotated with the rotation of a gear 102 when a drive motor 101 is operated, the torque is delivered to a worm gear 109 with the press contact with a friction plate 107, a rack 111 is shifted via a gear 110, a moving lens group 112 is moved back and forth and a focus to an image pickup plate 113 is adjusted. On the other hand a plunger 14 is operated to rotate a link 115 at the loading/unloading, the engagement with the gear 103 with the friction plate 107 is released and pressed into contact with the friction plate 104. When the motor 101 turns normally or reversely in this state, a loading ring 12 is rotated for loading/unloading. The loading motor and the zoom motor are used in common, and the switching of the drive transmission system is done simply by using the plunger, then the product cost is reduced and the light weight is attained while keeping the reliability of the drive mechanism. |
