Browse Prior Art Database

Ball/Flex Connector

IP.com Disclosure Number: IPCOM000111068D
Original Publication Date: 1994-Feb-01
Included in the Prior Art Database: 2005-Mar-26
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Chan, B: AUTHOR [+2]

Abstract

Disclosed is an invention which provides a low cost pad-on-pad separable card on board connector with low mating forces and high durability.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Ball/Flex Connector

      Disclosed is an invention which provides a low cost pad-on-pad
separable card on board connector with low mating forces and high
durability.

      The connector consists of (1) a non-conductive frame holding a
grid of gold plated balls (2) upper incline housing (w/elastomer),
(3) lower incline housing (w/elastomer), (4) two flex circuits to
provide connection between the gold plated balls and the respective
circuit cards and (5) jack screw.

      The upper housing will be wrapped with the first piece of flex
circuit and can be attached via Dendrites or other methods such as
solder, this will also apply to the lower housing.  The contact ball
holder will be located between the upper and lower housings with the
jack screw providing the actuation pressure.  The jack screw located
in the upper housing threads into a receiving socket in the lower
housing.  A biasing spring holds the screw toward the lower end of
the lower housing ramp as shown.  When the flex circuit of the upper
connector contacts the plated balls, the ramps slide relative to one
another inducing a wipe motion.  The sliding action compresses the
biasing spring until the actuation screw is torqued to its full load.
At this point, the contact system is mated.  (At this point, the
elastomer sheets will allow the flex circuit to 'form' around the
gold plated balls to better distribute the forces of the system.)