Browse Prior Art Database

Printed Circuit Card Restraint Mechanism

IP.com Disclosure Number: IPCOM000105187D
Original Publication Date: 1993-Jun-01
Included in the Prior Art Database: 2005-Mar-19
Document File: 2 page(s) / 66K

Publishing Venue

IBM

Related People

Buller, ML: AUTHOR [+2]

Abstract

Printed circuit cards in system units of workstations or PC's have the potential to unseat from the electronic connection due to mechanical shock induced by movement of the unit. The consequence is electronic functional problems created by the discontinuity of the connection system. This disclosure presents an effective method of retaining the circuit cards to prevent dislocation.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 84% of the total text.

Printed Circuit Card Restraint Mechanism

      Printed circuit cards in system units of workstations or PC's
have the potential to unseat from the electronic connection due to
mechanical shock induced by movement of the unit.  The consequence is
electronic functional problems created by the discontinuity of the
connection system.  This disclosure presents an effective method of
retaining the circuit cards to prevent dislocation.

      The major embodiment of this disclosure is described
schematically in Fig.1 where the screw (6) is shown attached to
adjustable forks (2) housed within a modified molded card pull out
tab (1) which attaches permanently to the printed circuit card.
Slots (4,5) provided within the housing interlock with features
common to all adapter card back bracket hardware (7).  Permanent
attachment of the modified molding to the printed circuit card
solidifies its location and strength.

      The apparatus described above is actuated by rotation of the
screw (6) which raises the adjustable forks (2) with its projections
anchoring under a ledge (8) provided by the bulkhead (3).  The ledge
is a common location feature in all bulkheads providing height, width
and depth orientation.  In addition, the rotation of the screw (6)
also provides a physical force against the ground tab (7) of the back
bracket against the bulkhead (3) enhancing the chassis ground.

      The attachment card restraint can be implemented on existing
printed circuit...