Sequential Contact Mating
Original Publication Date: 1989-Mar-01
Included in the Prior Art Database: 2005-Jan-27
Circuit board connector pins of different lengths enable contact closure to be made in a sequence conforming to the pin lengths. In Fig. 1, circuit board 1 carries connector pins 2, 3, 4 of successively shorter lengths at the ends of a circuit card connector carrier 5 for circuit card 6. (Only one end is shown.) The carrier has a plurality of spring contacts 7 at the same elevation that engage pins 2, 3, and 4; carrier 5 also has affixed therein pin contacts 8 that ultimately close with respective mating springs 9 on board 1. During insertion of carrier 5 on board 1, pins 2, being the tallest, enter respective contacts 7, then pins 3 of intermediate length make contact, and afterward the shorter pins 4 enter contacts 7. As the carrier is further depressed, pin contacts 8 engage shortest springs 9 on the board, as seen in Fig.