Browse Prior Art Database

Damage Resistant Display Interface Connector

IP.com Disclosure Number: IPCOM000105799D
Original Publication Date: 1993-Sep-01
Included in the Prior Art Database: 2005-Mar-20
Document File: 2 page(s) / 85K

Publishing Venue

IBM

Related People

Eagle, DJ: AUTHOR [+2]

Abstract

A design of a Video Monitor connector is described which can eliminate problems of customer-induced damage to interface (I/F) cables and maintain compatability with shipped and future systems and monitors. The design strengthens the polarization of the existing 15-pin D-shaped connectors without impacting compatibility.

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

Damage Resistant Display Interface Connector

      A design of a Video Monitor connector is described which can
eliminate problems of customer-induced damage to interface (I/F)
cables and maintain compatability with shipped and future systems and
monitors.  The design strengthens the polarization of the existing
15-pin D-shaped connectors without impacting compatibility.

      Problems exist due to the design of the 15-pin D-Shell for the
video I/F connector, as shown in Fig. 1.  The two parts 3 and 4 of
the D-connector push together and then the screws 6 tighten on the
nuts 8 to secure the connector in position.  The problem is that the
first point of contact is between the two parts 3 and 4 of the D
connector.  The D-Shell is polarized but not adequately so.  It is
possible to force on the connector the wrong way around and this
invariably damages the connector pins either by pushing them in,
bending or breaking them.  These are two known solutions to the
problems.  One is to change the design for one more robust, such as a
costly military-type designed for exceptional ruggedness.  This
solution causes an incompatibility problem and would be unacceptable
to marketing.  An alternative is to strengthen the outside of the
D-Shell which would be of limited effectiveness.

      The new design aims were to further polarize the connector 2
and for this polarization feature to make contact before the D-Shells
3 and 4 do to retain compatibility with current monitors/PCs.  A
specific implementation of these designs aims is shown in Fig. 2.
The thumbscrew rods 12 and 13 through the interface connector 2 are
now captured by the interface cable connector.  On the thumbscrew rod
12 there is a long nut 9 internally threaded; on the other rhs rod 13
is a flange 11 and a screw thread 7.  Flange 11 is to ensure that the
rod 13 is retained by the connector 2.  Now consider the system unit
planar part 5 and adapter 4 socket.  The standard scr...