Browse Prior Art Database

Film Gap for Actuator Lock

IP.com Disclosure Number: IPCOM000114824D
Original Publication Date: 1995-Feb-01
Included in the Prior Art Database: 2005-Mar-29
Document File: 2 page(s) / 38K

Publishing Venue

IBM

Related People

Ohta, M: AUTHOR [+3]

Abstract

Disclosed is the device that is used plastic film as one of the part of actuator lock, which locks access mechanism of hard disk drive to prevent damage due to external shock and vibration for non-operating conditions.

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This is the abbreviated version, containing approximately 100% of the total text.

Film Gap for Actuator Lock

      Disclosed is the device that is used plastic film as one of the
part of actuator lock, which locks access mechanism of hard disk
drive to prevent damage due to external shock and vibration for
non-operating conditions.

      The device is best understood with reference to the Figure.
Plastic film (1) is inserted into slit of rubber (2) of actuator lock
(3), or molded into rubber (2) of actuator lock (3).  Actuator (4)
has the soft magnetic steel (5), and actuator lock (3) has the
permanent magnet (6).  So, actuator lock (3) holds the actuator (4)
magnetically.  Then, distance between the soft magnetic steel (5) of
actuator (4) and the permanent magnet (6) of actuator lock (3) is the
thickness of the plastic film (1).  But, in current actuator lock,
distance between the soft magnetic steel (5) and the permanent magnet
(6) is the thickness of the rubber (2).  Rubber has the limitation
and rough tolerance of its thickness.

      The merit of this device is that holding force of actuator lock
(3) can be controlled tightly and can be set bigger than that of
rubber of actuator lock (3).  Because thickness of platic film (1)
can be controlled tight tolerance and can be made thinner than
rubber.  And another merit is that holding force of actuator lock (3)
can be changed easily by changing thickness of plastic film (1) in
case of change of requirement for shock resistance.