Browse Prior Art Database

High-Shock Resistant HSA/HAA

IP.com Disclosure Number: IPCOM000115770D
Original Publication Date: 1995-Jun-01
Included in the Prior Art Database: 2005-Mar-30
Document File: 6 page(s) / 109K

Publishing Venue

IBM

Related People

Aoyagi, A: AUTHOR [+4]

Abstract

Disclosed are several new (HSA) Head Suspension Assembly / (HAA) Head Actuator Assembly designs which have high shock resistant characteristics used in HDDs (Hard Disk Drives).

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This is the abbreviated version, containing approximately 55% of the total text.

High-Shock Resistant HSA/HAA

      Disclosed are several new (HSA) Head Suspension Assembly /
(HAA) Head Actuator Assembly designs which have high shock resistant
characteristics used in HDDs (Hard Disk Drives).

      When a shock is applied to HDDs, the HSAs inside the HDDs will
start to lift up and then slap the disk surfaces.  If the applied
shock is too large, this slap will make unrecoverable data error.

      In order to minimize this type of failure, we designed several
HSA/HAA structures.

      By attaching a Shock Limiter on the Mount Plate after HSA or
HAA assembling process, we can restrain the motion of the Load Beam
toward the Disk Surface.  This Shock Limiter might be connected by
adhesives, screws welding and so on.  This Shock Limiter might be
bent or curved a little bit to prevent the Load Beam from touching to
the Shock Limiter when the HSA is loaded on the Disk (Fig. 1).

      By extending the Mount Plate, we can also restrain the motion
of the Load Beam toward the Disk Surface.  This Shock Limiter might
be bent or curved or stepped a little bit to prevent the Load Beam
from touching to the extended Mount Plate when HSA is loaded on the
Disk.  Even if the offset angle is close to zero, there exists still
a tiny clearance between the extended Mount Plate and the Load Beam
(Fig. 2).

      A Shock Limiter is attached on the Actuator Arm.  This Shock
Limiter might be One-piece with the Actuator Arm itself.  The shape
of thi...