Browse Prior Art Database

Slit Structure for Carriage

IP.com Disclosure Number: IPCOM000115132D
Original Publication Date: 1995-Mar-01
Included in the Prior Art Database: 2005-Mar-30
Document File: 2 page(s) / 47K

Publishing Venue

IBM

Related People

Nakamoto, T: AUTHOR [+4]

Abstract

This article describes a carriage (1), that is a part of Actuator Assemly (2) of Hard Disk Drive, that has some slits (3) between its arms (4).

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Slit Structure for Carriage

      This article describes a carriage (1), that is a part of
Actuator Assemly (2) of Hard Disk Drive, that has some slits (3)
between its arms (4).

      Fig. 1 shows an actuator assembly.  Fig. 2 shows a slit
structure for a carriage.  Fig. 3 shows the Swage Process.  A ball
(5) is used to fix the head suspension assembly (6) to carriage arm
(4).  When swage ball (5) passes through the hole (7), the part
around the hole is led by its mechanical clearance to deform the
mountplate (8).  As a result of the deformation, the suspension's
pressing load comes to influence the Flying Height of a head (9) on
disk (not shown).  Flying Height is one of the key parameters for the
performance and reliability of the Hard Disk Drive.

      The stiffness of carriage (1) is weakened by forming slits in
the carriage (1).  So, very small mechanical clearance can be
absorbed in swage process.  Therefore, mountplate (8) deformation can
be minimized.

      Furthermore, the distance (11) between head (9) and pivot
center (10) can be shortened.  Seek time can be fast so as to
actuator inertia is decreased.  And the length of Hard Disk Drive is
shortened, too.