Browse Prior Art Database

Low-Cost and High-Accuracy Datum for a Flexible Cable Attachment

IP.com Disclosure Number: IPCOM000122893D
Original Publication Date: 1998-Jan-01
Included in the Prior Art Database: 2005-Apr-04
Document File: 2 page(s) / 78K

Publishing Venue

IBM

Related People

Albrecht, D: AUTHOR [+4]

Abstract

Disclosed is a low-cost and high-accuracy design for a flexible cable alignment method to a stacking actuator body to be used in a hard disk drive.

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This is the abbreviated version, containing approximately 70% of the total text.

Low-Cost and High-Accuracy Datum for a Flexible Cable Attachment

      Disclosed is a low-cost and high-accuracy design for a flexible
cable alignment method to a stacking actuator body to be used in a
hard disk drive.

      Flexible cable is usually fixed by a screw to use alignment
datum for which plastic boss and machined hole are generally
adopted.  This boss and hole tolerance are around  0.05 <--->
0.03.  It is expensive to make machined holes.

      This disclosure proposes a low-cost and high-accuracy design
in stacking an actuator structure with the following means:
  1.  A plastic stiffener has an alignment boss and fork, and
       the alignment fork and boss heights are almost the same
       as a spacer thickness (Fig. 1).  The spacer is inserted
       into the slit of the fork and also the boss fits into
       the pocket.
  2.  The stacking spacer usually has a tight tolerance on its
       thickness ( 0.005mm) due to the control disk stacking
       height.  When this spacer is inserted into the "Fork"
       portion of the stiffener, the stiffener is aligned
       tightly in the Z direction.  This accuracy (0.005 mm)
       is 5 -- 10 times better than conventional Assembly methods
       ( 0.05--0.03 mm).
  3.  The stacking actuator assembly composes a pocket by a
       spacer and head arms on both sides (Fig. 1).  This
       leads the height of this pock...