Non-Solderable Dual ZIF Contact System
Original Publication Date: 1987-Nov-01
Included in the Prior Art Database: 2005-Feb-02
The ZIF (Zero Insertion Force) contact system serves to conductively connect circuit cards 1 to circuit board 2, i.e., to connect pads 3 on cards 1 to pins 4 on board 2. The system in Fig. 1 consists of a plastic housing 5 placed on board 2 and which, in the region of pins 4, comprises chambers 6 into which pins 4 extend. The card is inserted into the plastic housing so that pads 3 are also positioned in chambers 6. According to the sectional views A-A of the chambers (Figs. 2 and 3), each chamber has a spring contact 7 which, through an additional low tension spring 8 is fixed in the "contact open" direction. In this position, there is no contact between pin 4 and pad 3. By turning an actuation lever 9 (Fig. 2) or by pressing a spring ramp 10 (Fig.