| 摘要 |
<p>PURPOSE:To switch a mode to various operating modes by changing the rotating direction of a motor by providing a cam gear, which is equipped with a cam part to regulate the motion of a base in a head, and an FR arm equipped with an FR gear to transmit rotation to the cam gear. CONSTITUTION:An FR gear A14a is supported on the left side of an FR arm 14 and an FR gear B14b is supported on the right side respectively through an FR spring 14c. The FR arm 14 is turned corresponding to the rotating direction of a fly wheel 5 by the load of the FR spring 14c. A cam part 16 is composed of a central wall part 16a and external wall part 16b and the both ends of the external wall part 16b can be made movable. Then, the cam part 16 controls the motion of a head base 4. The rotation of a motor 3 is transmitted to a cam gear 15 by the FR gear A14a or B14b. Thus, the head base 4 can be controlled to positions for recording / reproducing, fast forward and rewinding by switching the rotating direction of the motor 3.</p> |
