Patent ID: 9214176
Filing Date: 2015-12-15
Classification: G11B

Abstract:
1. A dual stage actuator (DSA) type suspension for a disk drive, the suspension comprising: a load beam; a flexure affixed to the load beam, the flexure having a gimbaled portion including a read/write head, the gimbaled portion being gimbaled on the load beam so that the head slider pitches and rolls freely in response to surface irregularities in a surface of a data disk as the data disk travels underneath the head slider; a piezoelectric actuator having a first end attached to the gimbaled portion at an actuator attachment location thereof; a limiter comprising a finger extending from the actuator attachment location, the finger engaging the load beam in such a way that the finger is free to move vertically within a limited range beyond which the finger abuts against a fixed portion of the suspension relative to the load beam to prevent further vertical movement of the finger; whereby the limiter limits vertical movement of the first end of the actuator during a shock event thereby limiting a bending stress induced in the actuator during said shock event.