| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that miniaturization of a whole device and reduction of a power consumption are difficult due to the requirement to increase driving force of a feed screw against frictional force since large frictional force is caused between a screw part and teeth of the feed screw in the conventional pickup feed device. SOLUTION: A pickup feed device is equipped with the feed screw 10, a teeth part 23 having the teeth 23a, 23a, 23a engaged with the screw part 10a and moving along the direction of axial length of the feed screw 10 by the rotation of the feed screw 10, and a follower body 26 for connecting this teeth part 23 and the pickup 8. Rigidity of the follower body 26 in the direction parallel with the direction of axial length of the feed screw 10 is larger as compared with the rigidity of the feed screw 10 in the direction intersecting with the direction of axial length, and the teeth part 23 is biased toward the feed screw 10 in the direction intersecting with the direction connecting the teeth part 23 and the pickup 8. COPYRIGHT: (C)2005,JPO&NCIPI
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