Patent ID: 6052358
Filing Date: 2000-04-18
Classification: G11B

Abstract:
An optical pickup feeding mechanism, comprising:a pick-up base on which an optical pick-up is provided;a guide mechanism for guiding said pick-up base;a feed screw engaged with said pick-up base, said feed screw being rotated to feed said pick-up base along said guide mechanism;a rotation driving mechanism for driving said feed screw to rotate;a base on which said guide mechanism and said rotation driving mechanism are arranged, said base including a pair of bearings used for supporting said feed screw, and at least one of a pair of said bearings being a thrust bearing; anda forcing mechanism provided on said base and butting at one end of said feed screw, said forcing mechanism applying a force working on said feed screw both in a thrust direction and in a direction making an angle between said thrust direction to apply components of said force working on said feed screw both in said thrust direction and at least in one direction orthogonal to said thrust direction;wherein said forcing mechanism includes an elastic member butting against one end of said feed screw to apply a force working on said feed screw in said thrust direction, in a first direction orthogonal to said thrust direction, and in a second direction orthogonal both to said thrust direction and to said first direction; and furtherwherein said elastic member includes a butting part and an elastic displacement part, said butting part butting against one end of said feed screw, and said elastic displacement part generating components of said force working on said feed screw butting against said butting part in said thrust direction, in said first direction and in said second direction.