Browse Prior Art Database

Optical Link Card Retainer With Flexible Guiding Mechanism

IP.com Disclosure Number: IPCOM000104238D
Original Publication Date: 1993-Mar-01
Included in the Prior Art Database: 2005-Mar-18
Document File: 1 page(s) / 44K

Publishing Venue

IBM

Related People

Block, TR: AUTHOR [+4]

Abstract

A mechanical retainer with flex cable guiding mechanism for optical sub-assemblies used in optical link card applications is disclosed. The retainer aligns the flex attachment cables for ease of assembly.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 98% of the total text.

Optical Link Card Retainer With Flexible Guiding Mechanism

      A mechanical retainer with flex cable guiding mechanism for
optical sub-assemblies used in optical link card applications is
disclosed.  The retainer aligns the flex attachment cables for ease
of assembly.

      A two-part, snap-together, molded plastic retainer assembly was
developed.  The bottom piece allows slotted cylindrical optical
sub-assemblies (OSAs) to be set in place.  These OSAs have multiple
layer polyimide (flex) cables attached to the leads protruding out of
the base of the OSAs.  The flex cables are, in turn, to be attached
to the raw board carrier containing the rest of the optical link card
function.

      The top retainer piece contains two features which hook slots
in the bottom retainer piece and form pivot points at the end of the
retainer opposite of the flex cables.  As the top piece is rotated
about these pivot points, guiding pins/cavities in the retainer top
capture the portions of the individual flex cables extending upward
from the optics.  The flex cables are then properly aligned to the
raw card as the top retainer is further closed and ultimately latched
by catches reaching up from the bottom retainer piece.

      The retainer pieces are aligned to the raw card using alignment
pins which, in turn, assure the flex cable solder pads are aligned to
the appropriate raw card pads.  A flex cable attachment process can
then be used to couple the flex to card.

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