Browse Prior Art Database

Pneumatically Actuated Zero Insertion Force Module Socket

IP.com Disclosure Number: IPCOM000047086D
Original Publication Date: 1983-Sep-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 2 page(s) / 82K

Publishing Venue

IBM

Related People

Drzewinski, GK: AUTHOR

Abstract

Figs. 1, 2 and 3 show a prior-art zero insertion force socket having a top plate 3 mounted to a bottom plate 10 and sandwiching a cam plate 6 therebetween. The cam plate 6 slides laterally within the cavity formed by the top plate 3 and the bottom plate 10. The cam plate 6 is actuated by means of a cam rod 9 which is rotated by means of the cam lever 8 and handle knob 7. Module contacts 4 are seated in the holes 13 of the bottom plate 10 so that their bottom portions protrude from the holes 13 and serve as the contacting terminals for the tester. Each of the contacts 4 protrudes through the movable cam plate 6 and is actuated from an open, non-gripping position to a closed, gripping position by means of rotating the cam rod 9. The contacts 4 protrude up into the holes 11 of the top plate 3.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 52% of the total text.

Page 1 of 2

Pneumatically Actuated Zero Insertion Force Module Socket

Figs. 1, 2 and 3 show a prior-art zero insertion force socket having a top plate 3 mounted to a bottom plate 10 and sandwiching a cam plate 6 therebetween. The cam plate 6 slides laterally within the cavity formed by the top plate 3 and the bottom plate 10. The cam plate 6 is actuated by means of a cam rod 9 which is rotated by means of the cam lever 8 and handle knob 7. Module contacts 4 are seated in the holes 13 of the bottom plate 10 so that their bottom portions protrude from the holes 13 and serve as the contacting terminals for the tester. Each of the contacts 4 protrudes through the movable cam plate 6 and is actuated from an open, non-gripping position to a closed, gripping position by means of rotating the cam rod 9. The contacts 4 protrude up into the holes 11 of the top plate 3. The module to be tested has its contact pins inserted through the holes 11 of the top plate 3 into the open contacts 4 with zero insertion force. Then the cam rod 9 is rotated by means of the cam lever through manual actuation by the operator, to move the cam plate 6 so as to close the contacts 4 into their gripping position about the respective contact pins of the module. In this manner, the prior-art socket has its contacts 4 effectively grip the pins of the module which was previously inserted with zero force into the top plate 3. One problem with the prior-art socket of Figs. 1, 2 and 3 is that it is only susceptible to manual operation and, therefore, is not readily adaptable to automated module plugging operations. This problem is solved by the pneumatically actuated, zero insertion force module socket invention which is depicted in Figs. 4, 5, 6 and 7. The invention is the replacement of the cam rod 9 with an expansible tubing 16 which is connected to a nipple 17 and mounted in the hole 14 which is coaxial with the cylindrical cavity 15 into which the cam rod 9 had been mounted. By applying a pneumatic pressure to the nipple 17, the expansible...