Browse Prior Art Database

Connector Actuation Mechanism

IP.com Disclosure Number: IPCOM000105613D
Original Publication Date: 1993-Aug-01
Included in the Prior Art Database: 2005-Mar-20
Document File: 4 page(s) / 92K

Publishing Venue

IBM

Related People

Gillett, JB: AUTHOR

Abstract

There is a growing demand for high density, high performance separable electrical connectors. Various forms of flex film connectors are in development to satisfy this need. A particularly difficult option to design is for a side entry Zero Insertion Force (ZIF) connector. The object of this disclosure is to provide a simple means of actuating a ZIF connector, while also providing a design for a top entry card edge connector.

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This is the abbreviated version, containing approximately 52% of the total text.

Connector Actuation Mechanism

      There is a growing demand for high density, high performance
separable electrical connectors.  Various forms of flex film
connectors are in development to satisfy this need.  A particularly
difficult option to design is for a side entry Zero Insertion Force
(ZIF) connector.  The object of this disclosure is to provide a
simple means of actuating a ZIF connector, while also providing a
design for a top entry card edge connector.

Desirable qualities in a side entry ZIF connector include:

1.  A positive retraction mechanism to hold the moving part of the
    connector clear of the card while the card is inserted in a
    direction parallel to the connector's long axis.
2.  A mechanism to move the contacts into engagement after the card
    is inserted and achieves appropriate registration with the
    connector.
3.  The ability to provide relatively constant spring force against
    the contacts over the range of mechanical tolerances.

      Fig. 1 shows a card 10 to be releasably electrically connected
to a pair of printed circuit boards 20.  The separable electrical
connector 30 shown here is an example of a flex film connector using
a wedge and V design (V-Flex Connector) [*].  The connector comprises
a moving part 32 and a fixed part 34.  The dashed lines indicate the
position of the connector moving part 32 in its retracted
(disconnected) position, while the solid lines show it in the mated
position.  Any connector whose contacts become mated by motion away
from the board, and disconnected by motion toward the board can use
the mechanism described in this disclosure.

      Nylon guides 40 and tongues 44 are used to guide the card 10
into alignment with the connector mechanism 30 during insertion of
the card between the two boards 20.

      A cross-section of the connector mechanism is seen in Fig. 2.
The top of a formed stainless steel spring 50 is welded to the base
...