Browse Prior Art Database

Compliant Pin

IP.com Disclosure Number: IPCOM000101408D
Original Publication Date: 1990-Aug-01
Included in the Prior Art Database: 2005-Mar-16
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Babuka, R: AUTHOR [+4]

Abstract

Disclosed is a miniature compliant pin that allows process assembly in plated through holes in printed circuit boards and cards without using fixtures, fluxes, soldering and solvent cleaning. The problem of plated through hole damage caused by press-fit compliant pin insertion and extractions is solved by this invention.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Compliant Pin

       Disclosed is a miniature compliant pin that allows
process assembly in plated through holes in printed circuit boards
and cards without using fixtures, fluxes, soldering and solvent
cleaning.  The problem of plated through hole damage caused by
press-fit compliant pin insertion and extractions is solved by this
invention.

      In the drawings, the compliant tail member consists of axial
cantilever beams coupled to an upper section having a "roll pin"
geometry.  The roll-pin cross sections consist of tapered
uniform-stress curved cantilever beams sharing a common base.  A
rectangular section is removed at the apex of the common base.  The
coupled effect controls the compliant area and forces against the
walls of the plated through hole, preventing damage during insertion
and rework.

      The axial cantilevers are also formed to produce a conical
lead- in which simplifies insertion and rework.  By eliminating
assembly risks and the detrimental effect of heating and solvent
cleaning, the cost of the final assemblies is reduced.  Environmental
and health hazards are significantly reduced by non-use of chemicals,
and the production of toxic fumes and solvent vapors are eliminated.