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Browse Prior Art Database

Zero Insertion Force Pneumatic Pin to Pin Connector

IP.com Disclosure Number: IPCOM000088830D
Original Publication Date: 1977-Aug-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 2 page(s) / 53K

Publishing Venue

IBM

Related People

Buyck, WJ: AUTHOR [+2]

Abstract

Shown is a low cost and repairable zero insertion force pneumatic pin to-pin connector for use in test equipment.

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Zero Insertion Force Pneumatic Pin to Pin Connector

Shown is a low cost and repairable zero insertion force pneumatic pin to-pin connector for use in test equipment.

Coil contact elements 1 are inserted into contact carrier 2. The carrier is slid into housing assembly 3. Return spring 4 with cover locking plug 5 is placed in the contact carrier and depressed, permitting the contact carrier cover 6 to be inserted. The cover locking plug detents into a depression in the cover to hold the cover in place. Air chamber assembly consisting of air chamber 7, "O" ring 8 and diaphragm 9 is inserted in the end of the connector housing, and air chamber cover 10 is added. A slight compression of the "O" ring occurs, holding the cover in place.

In operation, pressures ranging from 50 to 65 psi applied via a metal tube causes diaphragm 9 to distend and move the contact carrier 2. Contact to pins inserted in the connector and restrained by holes in the housing assembly 3 is made via the coil contact elements 1. A wiping action of contact against pin occurs. Removal of the air pressure restores the connector contacts to the normally open state. The design of the connector prevents insertion of pins when the air pressure is on, since the contact carrier blocks the holes in the assembly, preventing damage to the contacts in the connector.

This connector has the advantage that the components are easily assembled. Should failure of the air chamber diaphragm, contacts, or return sprin...