Browse Prior Art Database

Non-Solderable Dual ZIF Contact System

IP.com Disclosure Number: IPCOM000040537D
Original Publication Date: 1987-Nov-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 2 page(s) / 42K

Publishing Venue

IBM

Related People

Landrock, J: AUTHOR [+4]

Abstract

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.

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Non-Solderable Dual ZIF Contact System

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. 3), contact is made such that the ends of contact 7 are pressed against both pin 4 and pad 3. After the contact and pad/pin have been positively connected, the contact faces are cleaned by wiping. For reliable orientation, contact 7 may have a groove on the pin side.

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