Abstract: Described herein is a moving coil type rotary actuator for a disk drive, which essentially includes: a rotary arm supporting transducer means at one end thereof, and rotatably supported for rotation about an axis; a first york arranged in a first plane perpendicular to the rotational axis; a second york arranged in a second plane in a spaced relation parallel with the first york and perpendicular to the rotational axis; a first permanent magnet mounted on the surface of the first york to produce a first magnetic field between the second york and itself; a second permanent magnet mounted on one surface of the second york in staggered relation with the first magnet on the first york to produce a second magnetic field between the first york and itself; and a moving coil supported by the rotary arm at the other end thereof and having first and second coil portions positioned within the first and second magnetic fields, respectively.

Abstract: To reduce the number of parts, assembly work time and cost of a cable closure including a two-splittable cylindrical sleeve for covering the cable junction point, and a pair of two-dividable annular end plates fitted to both inner ends of the sleeve to close spaces between the cables and the sleeve, the end plates are formed by a rigid plastic material and gaps between the cable and the end plates are sealed by rubber airtight tape wound around the cable by adjusting the number of turns according to cable diameter. Further, two cable gripping means are fixed to the end plates, respectively to protect the junction point from external force applied between the two cables by the strength of the sleeve coupled to the end plates.