Patent ID: 6285530
Filing Date: 2001-09-04
Classification: G11B

Abstract:
A driving device equipped with a head moving device comprising:a head;a moving member which supports said head;a guide shaft for guiding said moving member in the radial direction of a disk disposed at a predetermined position; anda drive section for driving said moving member,wherein said drive section includes a coil fixed to said moving member and disposed in a vertical fashion so as to have a height larger than a horizontal width;a U-shaped yoke made of a magnetic material which is adjacent to said coil and which has a pair of longitudinal portions extending in the moving direction of said moving member, one of said pair of longitudinal portions of said yoke being inserted into a coil center hole of said coil so as to be movable in relation to said coil, and the other longitudinal portion of said yoke being mounted to a chassis provided in said head driving device;a magnet which is attached to the inner surface of the other longitudinal portion of said yoke opposing said one longitudinal portion of said yoke, and which extends in the moving direction of said moving member; anda bar-shaped guide portion having a base end portion fixed to said coil, and a free tip end portion extending to the other longitudinal portion of said yoke, andwherein a guide hole extending in the moving direction of said moving member is formed in the other longitudinal portion of said yoke, and said free tip end of said guide portion is guided by said guide hole so that said guide portion moves in accordance with the moving direction of said moving member together with said coil.