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Self-Alignment Device for Off-The-Shelf Electrical Connectors

IP.com Disclosure Number: IPCOM000100915D
Original Publication Date: 1990-Jun-01
Included in the Prior Art Database: 2005-Mar-16
Document File: 3 page(s) / 95K

Publishing Venue

IBM

Related People

Jeche, MW: AUTHOR [+3]

Abstract

Illustrated is a design for a self-alignment device employed for use with "off-the-shelf" high density or "DIN"-style electronic connectors. The device provides self-centering capability, allowing the connectors to be plugged together where initial mis-registration between them occurs, thereby preventing damage to the connector housings.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

Self-Alignment Device for Off-The-Shelf Electrical Connectors

       Illustrated is a design for a self-alignment device
employed for use with "off-the-shelf" high density or "DIN"-style
electronic connectors.  The device provides self-centering
capability, allowing the connectors to be plugged together where
initial mis-registration between them occurs, thereby preventing
damage to the connector housings.

      Referring to Fig. 1, a backplane card or motherboard 1, mounted
in a logic cage (not shown) is equipped with connector half 2 to
which logic card 3, equipped with mating connector half 4, can be
plugged.  Logic card 3 is fitted with covers (not shown) that
interface with a guide system in the logic cage to provide for rough
location of the card with respect to the backplane when the card is
installed. In this type of system, the connectors cannot be easily
seen and the cage guide system cannot be toleranced closely enough to
guarantee that the connectors will always mate properly.  Bevels 5
and 6 on connector halves 2 and 4, respectively, are provided as an
integral part of the off-the-shelf connector design and give a small
amount of guiding or self-alignment laterally (not enough, however,
to take up the tolerances in the cage guide system).  The design of
this type of connector does not include end walls at 7 in the figure
and thus no self-alignment is provided along the length of the
connector.

      To ensure that the connectors are properly guided together as
card 3 is plugged, alignment blocks 8 are added to the system.
Blocks 8 are fastened with screws 20 or other suitable means to
backplane card 1 such that they abut connector half 2, providing what
are, in effect, end walls. As shown, blocks 8 are mirror images of
one another.  Each block 8 contains bevelled surfa...