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Integral Contact and Lead for Electrical Connection and Mechanical Isolation Between a Contact and Circuit Board

IP.com Disclosure Number: IPCOM000039182D
Original Publication Date: 1987-Apr-01
Included in the Prior Art Database: 2005-Feb-01
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Jacobs, E: AUTHOR [+2]

Abstract

A printed circuit board is mounted in a horizontal plane and the stationary half of a multi-contact connector is mounted slightly above the board with its female contacts facing outward to one side so that when a mating connector half is plugged in and unplugged, the forces on the connector act nominally along a horizontal line parallel to the plane of the board. In the improvement of this publication, a female contact of a connector and an associated lead that is to be soldered into a plated through hole of a printed circuit board are formed as an integral L-shaped structure. The integrated contact-lead structure eliminates the need for a crimp connection between a conventionally separate lead and contact, and it thereby improves reliability.

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Integral Contact and Lead for Electrical Connection and Mechanical Isolation Between a Contact and Circuit Board

A printed circuit board is mounted in a horizontal plane and the stationary half of a multi-contact connector is mounted slightly above the board with its female contacts facing outward to one side so that when a mating connector half is plugged in and unplugged, the forces on the connector act nominally along a horizontal line parallel to the plane of the board. In the improvement of this publication, a female contact of a connector and an associated lead that is to be soldered into a plated through hole of a printed circuit board are formed as an integral L-shaped structure. The integrated contact-lead structure eliminates the need for a crimp connection between a conventionally separate lead and contact, and it thereby improves reliability. The integrated contact-lead presents a design problem because motion of the contact during plugging and unplugging is translated through the lead into forces acting on the solder joint. Upon insertion or removal of the mating half of the connector, each female contact within the connector block moves in multiple degrees-of-freedom due to the plugging orientation and clearances between mating connector halves as well as positional misregistration of discrete contacts. This motion of the contact is translated into forces acting upon the solder joint through mechanical rigidity provided by the lead. In this example,...