Carriage latch for a disc drive

Details Carriage latch for a disc drive Carriage latch for a disc drive

G - Physics

11

B

352/24.3

G11B 5/54 (2006.01) G11B 21/02 (2006.01) G11B 21/08 (2006.01) G11B 21/22 (2006.01)

Patent

CA 1285067

ABSTRACT OF THE DISCLOSURE A dynamic lock for a disc drive carriage incorporates a plunger that captures an extension on the carriage. The plunger is guided by a solenoid and frame. The plunger is spring loaded such that it nor- mally is biased into the carrizge to restrain the carriage in the home locking position. The solenoid can withdraw the plunger and allow release of the carriage. A counterweight rotates about a pivot provided on the frame adjacent the plunger. A finger that pro- trudes from the counterweight rides in a recess on the plunger. In the event of a sudden shock to the disc drive, the shock force is transmitted from the plunger through the finger to the counter- weight. The counterweight is designed to be of equal mass to the plunger, whereby the shock force is neutralized, preventing the plunger from moving back toward the solenoid and releasing the carriage.

545620

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