Lightweight, rigid, compact configuration for the voice coil, ca

Details Lightweight, rigid, compact configuration for the voice coil, ca Lightweight, rigid, compact configuration for the voice coil, ca

1989-03-14

1990-10-30

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

310 13, G11B 555

Patent

active

049672967

ABSTRACT:
The carriage assembly of this invention includes an oval coil whose shape is maintained by a rectangular bobbin which is passed through the open sides of the rectangular carriage frame and fastened inside the carriage frame so that the ends of the coil protrude from the carriage frame and define symmetrical semi-cylindrical openings on either side of the carriage for cooperation with the magnetic pole pieces of the voice coil motor. The transducers are mounted to arms which fit into precision machined slots in a head mounting block mounted on the front of the rectangular carriage. The connector cable to the transducers is a printed circuit cable (PCC) that passes directly through the bottom portion of the carriage and lies flat along the path of travel of the carriage between the voice coil motor segments which define the movement of the carriage. A support bracket mounted to the rear of the path of travel of the carriage supports a portion of the PCC and causes it to loop back upon itself as the carriage moves toward the rear of the path of travel. The rear of the carriage is open, so that the upper portion of the folded PCC cable loop passes into the carriage as the carriage reaches the rear of its path of travel, minimizing the space the carriage/PCC assembly will occupy.

REFERENCES:
patent: 3735163 (1973-05-01), Dijkstra et al.
patent: 3896319 (1975-07-01), Chari
patent: 3899699 (1975-08-01), Griffing
patent: 4034411 (1977-07-01), Kraemer et al.
patent: 4305105 (1981-12-01), Ho et al.
patent: 4331990 (1982-05-01), Frandsen
patent: 4414594 (1983-11-01), Farmer et al.
patent: 4462054 (1984-07-01), Dong et al.
patent: 4631431 (1986-12-01), Viskochil
patent: 4730227 (1988-03-01), Chong et al.
IBM Technical Disclosure Bulletin, Cable Assembly For Disk Drive Head Carriage, Brende et al. vol. 26 No. 3B Aug. 1983.
IBM Technical Disclosure Bulletin, vol. 20 No. 5 Oct. 77 Voile Coil Motor, Guzman et al.

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