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Zero Insertion Force Receptacle for a Planar Circuit Board

IP.com Disclosure Number: IPCOM000081461D
Original Publication Date: 1974-Jun-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 55K

Publishing Venue

IBM

Related People

Ecker, ME: AUTHOR

Abstract

This is a zero insertion and withdrawal force receptacle for interconnecting a pinned structure in a planar circuit distribution means. It includes a counterbalanced energy storage capability for effecting contact wipe at the connection interface, as well as providing averaging of the effect of contact loading differentials.

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Zero Insertion Force Receptacle for a Planar Circuit Board

This is a zero insertion and withdrawal force receptacle for interconnecting a pinned structure in a planar circuit distribution means. It includes a counterbalanced energy storage capability for effecting contact wipe at the connection interface, as well as providing averaging of the effect of contact loading differentials.

Referring to the figure, contact element 1 is firmly retained within housing 2 by tab 3 engaging a notched slot in element 1. When engaged by a cam plate 4 or module pin 5 the geometrical design of element 1 produces a force vector, which maintains contact forcibly against tab 3 and inclined surface 6. After assembly, element 1 is always retained either by cam plate 4 or pin 5. The locked contact element portion against surface 6 results in an active flexure region for element 1. The lockup of element 1 also provides strain relief for solder connection 7.

Housing cap 8 is a snap-on cover, serving as a contact protection member as well as a pin guide, when plugging in a pin structure such as module 9. To replace a contact, cap 8 is removed and a tapered blade is inserted between the supported region of element 1 and inclined surface 6. This disengages tab 3 from the notch or slot of element 1, which may be extracted from the housing upon the heating of solder joint 7.

To achieve a counterbalanced contact system, alter ate rows of contacts 1 are given reverse orientation; i.e., the undu...