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Arrangement for Zero-Insertion-Force Contacts

IP.com Disclosure Number: IPCOM000040914D
Original Publication Date: 1987-Mar-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Tsui, F: AUTHOR

Abstract

A zero insertion force contact arrangement for connectors is provided and comprises: a base piece having long thin slots; expandable tubings located nearly adjacent the non-slotted areas of the base piece; a flexible tape strip having wiring and pad patterns for contact, with the tape strip pleated into the thin slots and around the expandable tubings; and retention means for fastening portions of the flexible tape strip in the thin slots. After a card is inserted between the tubings, the expandable tubings are inflated and the flexible tape is pressed into contact with the card.

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Arrangement for Zero-Insertion-Force Contacts

A zero insertion force contact arrangement for connectors is provided and comprises: a base piece having long thin slots; expandable tubings located nearly adjacent the non-slotted areas of the base piece; a flexible tape strip having wiring and pad patterns for contact, with the tape strip pleated into the thin slots and around the expandable tubings; and retention means for fastening portions of the flexible tape strip in the thin slots. After a card is inserted between the tubings, the expandable tubings are inflated and the flexible tape is pressed into contact with the card.

An example of the zero-insertion-force contact arrangement is seen in Figure
1. A strong base piece 10, which may be planar or curved as desired, has a plurality of preferably tapered slots 20 cut therein. Each slot 20 typically has a width which is slightly greater than the card thickness. Adjacent or nearly adjacent the non-slotted areas of the base are expandable tubings 80, such as hydraulically inflatable structures or cam-operated wedges. A strip of flexible tape 30, such as polyimide tape or other tapes known in the art, having wiring and pad patterns 40 on one side, is folded in a pleated serpentine fashion into slots 20 and loosely around tubings 80. Retention rods 60 are then used to fasten the tape 30 in the slots 20. The flexible tape 30 may be of different heights as desired or required for the inserted card 90. Alternatively, th...