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ACTUATOR DESIGN FOR PCMCIA TYPE-II HARD DISK DRIVE

IP.com Disclosure Number: IPCOM000029815D
Original Publication Date: 2004-Jul-13
Included in the Prior Art Database: 2004-Jul-13
Document File: 3 page(s) / 268K

Publishing Venue

IBM

Abstract

Disclosed is a voice coil motor-driven actuator assembly configured for use in a PCMCIA Type-2 hard disk drive. Two designs are described, and both are configured to provide stiffness and rigidity to the end of the disk drive that is held by a user during insertion and removal into and from the using system, and thereby restricting the case from deforming.

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ACTUATOR DESIGN FOR PCMCIA TYPE -II HARD DISK DRIVE

Disclosed is a voice coil motor-driven actuator assembly configured for use in a PCMCIA Type-2 hard disk drive. Two designs are described, and both are configured to provide stiffness and rigidity to the end of the disk drive that is held by a user during insertion and removal into and from the using system, and thereby restricting the case from deforming.

       Fig. 1 depicts the preferred configuration of the disclosed actuator assembly. The voice coil motor consists principally of a bipolar permanent magnet (1) which is bonded to a flat, soft steel bottom plate (2), two pins (3) pressed into the bottom plate and each fitted with resilient sleeves (4), a stamped and formed, soft steel top cover (5) which serves as a low reluctance return path for the magnetic flux, and a wound wire coil (6) which is bonded within a yoke that is integral with the one piece comb (7). The comb is only 2 mm high, and the magnet assembly occupies the entire vertical space within the disk drive enclosure.

       Two head/suspension assemblies (not shown) are weldably attached to the two arms extending forward from the comb, consequently the comb material is preferably a steel alloy or a beryllium-aluminum alloy, both of which are weldably compatible with stainless steel suspensions. A projection extending from the side of the comb provides a platform for attachment of the signal carrying flexible cable (8). This cable is formed to conform to the...