Card Detents for Zero-Insertion-Force Connectors
Original Publication Date: 1989-May-01
Included in the Prior Art Database: 2005-Jan-28
Circuit cards can be resiliently biased toward a seated position in a zero insertion force (ZIF) connector by a spring that is subsequently located in an ineffective position and reset during card removal. In the side view, shown in Fig. 1, card 1 is inserted along slot 2, cf. arrow A, of connector 3 over retention spring 4. As the card becomes fully seated (phantom position) at the right, spring 4 moves up to hold the card in position while the connector handle 5 is operated in a clockwise (CW) direction to close the connector spring contacts (not shown) on the card contacts (not shown). For card removal, handle 5 is rotated counterclockwise (CCW) and to the downward position shown in Fig. 1 urging spring 4 down with pin 6 to allow card 1 to be withdrawn to the left.