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Zero Insertion Force, Multi-Knife-Edge Pin Contactor

IP.com Disclosure Number: IPCOM000036244D
Original Publication Date: 1989-Sep-01
Included in the Prior Art Database: 2005-Jan-28
Document File: 2 page(s) / 60K

Publishing Venue

IBM

Related People

Karner, FA: AUTHOR [+2]

Abstract

A set of spring-loaded knife-edge contacts is moved into limited pressure contact with a pin after the pin is inserted into the contactor. A small amount of wiping action takes place between the pin and the knife edge contacts during the contacting procedure.

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Zero Insertion Force, Multi-Knife-Edge Pin Contactor

A set of spring-loaded knife-edge contacts is moved into limited pressure contact with a pin after the pin is inserted into the contactor. A small amount of wiping action takes place between the pin and the knife edge contacts during the contacting procedure.

Referring to Fig. 1, conductive pin 2 is firmly attached to substrate 4. The contactor assembly is comprised of insulating contactor housing 6 and conductive pin contactor 8, which is firmly attached to insulating contactor base
10. Six knife-edge contacts 12 are each affixed to springs 14 which are an integral extension of pin contactor 8. A cross-section of the six-wedge-shaped knife-edge contacts 12 and pin 2 in a plane A-A is shown above the vertical cross section of the pin and contactor assembly.

When substrate 4 is brought into contact with the top surface of contactor housing 6, pin 2 makes little or no contact with parts comprising the contactor. Thus, no force is required to insert pin 2 into the contactor.

Referring to Fig. 2, following pin 2 insertion into the contactor assembly, contactor base 10 is separated from contactor housing 6 a distance D. Springs 14 and therefore knife-edge contacts 12 are moved toward pin 2. Knife edges 12 make wiping contact with pin 2, and final pressure of contacts 12 on pin 2 is limited by springs 14. Knife edges 12 are shown to be in contact and have limited penetration into pin 2 in a cross-section of the knife...