Slotted flex circuit for a disk drive actuator

Details Slotted flex circuit for a disk drive actuator Slotted flex circuit for a disk drive actuator

1996-11-15

1998-05-05

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

G11B 555, G11B 2108

Patent

active

057484104

ABSTRACT:
A voice coil actuator return path and a slotted flex circuit member for a linear actuator of a disk drive, which together accurately and precisely position the center guide track, and align the mass and forces of the electrical circuit on the carriage are disclosed. The outer return path is precisely formed from laminations of low carbon steel. The outer return path supports and accurately positions a central guide track, on which a carriage assembly slides. Moreover, the outer return path is oriented in a rectangle that is coupled to a disk drive platform, and includes an aperture through which a portion of the carriage assembly passes.
A flex circuit member, which electrically communicates with the read/write heads, includes a slot that enables the central guide track to pass though. The slot enables the flex circuit member to be connected to the carriage assembly near a center axis of the carriage. The flex circuit member has a center of mass and center of force approximately equally distributed on each side of a vertical plane passing through a centerline of the central guide track.

REFERENCES:
patent: 4811143 (1989-03-01), Ohashi et al.
patent: 4812934 (1989-03-01), Suzuki et al.
patent: 4819108 (1989-04-01), Seki et al.
patent: 4823217 (1989-04-01), Kato et al.
patent: 4835642 (1989-05-01), Furukawa et al.
patent: 5166846 (1992-11-01), Shigemoto
patent: 5305167 (1994-04-01), Nagase et al.

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