Carriage latch for a disc drive incorporating inertial lock-up

Details Carriage latch for a disc drive incorporating inertial lock-up Carriage latch for a disc drive incorporating inertial lock-up

1986-11-24

1988-02-16

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360 86, 360 97, G11B 554, G11B 2122, G11B 5012

Patent

active

047259078

ABSTRACT:
A dynamic latching mechanism for a disc drive includes a latch rotatable about a pivot which captures an extension on the carriage. The latch is mounted in a frame directly attached to the disc drive housing. A spring loaded plunger normally is biased against the latch to hold it in place and thus restrain the carriage after the extension has been captured and power removed. A solenoid withdraws the plunger and allows release of the carriage. A brake plate is provided sliding on the plunger. A protrusion which extends from the latch frame and thus the disc drive housing cooperates with an edge of the brake plate. In the event of sudden shock to the housing, the shock force is transmitted to the protrusion which tilts the brake plate, freezing the plunger against the latch and preventing the latch from releasing from the extension on the carriage, so that the carriage is properly restrained even in the event of a significant shock.

REFERENCES:
patent: 2378173 (1945-06-01), Bazley
patent: 4139874 (1979-02-01), Shiraishi
patent: 4484241 (1984-11-01), Brende et al.
patent: 4562500 (1985-12-01), Bygdnes

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