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Fixture for Holding an Array of Spring Connectors

IP.com Disclosure Number: IPCOM000059896D
Original Publication Date: 1986-Feb-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 55K

Publishing Venue

IBM

Related People

Backes, JL: AUTHOR [+3]

Abstract

This fixture holds an array of spring connectors in staggered alignment. It is particularly useful for soldering the array of connectors to an array of pads on a substrate which are in registered alignment with the connectors. Plural symmetrically spaced spring connectors 1 (Fig. 1) and their common selvage strip 2 are stamped from sheet metal, e.g., Cu. The stampings are formed into a generally U-shaped configuration with an outwardly extended dimple 3 that is formed on the free end 4 of the spring connector 1. The outer surface of dimple 3 is plated with a metal or alloy having good electrical and wear resistant properties, e.g., BeCu, and becomes the wipe contact of spring connector 1.

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Fixture for Holding an Array of Spring Connectors

This fixture holds an array of spring connectors in staggered alignment. It is particularly useful for soldering the array of connectors to an array of pads on a substrate which are in registered alignment with the connectors. Plural symmetrically spaced spring connectors 1 (Fig. 1) and their common selvage strip 2 are stamped from sheet metal, e.g., Cu. The stampings are formed into a generally U-shaped configuration with an outwardly extended dimple 3 that is formed on the free end 4 of the spring connector 1. The outer surface of dimple 3 is plated with a metal or alloy having good electrical and wear resistant properties, e.g., BeCu, and becomes the wipe contact of spring connector 1. A solder-filled groove 5 is formed on the fixed end 6 of the connector 1 and is reflowed to solder bond the end 6 to the pad (not shown) of the substrate (not shown) with the aid of the partially shown fixture 10 (Figs. 2-4). Fixture 10 consists of a plurality of precision-machined alternating parallel plate blocks 11 and 12 (Fig. 2) held in spaced and registered alignment by locator pins (not shown) and locator holes, e.g., holes 13, machined in the blocks. Each of the blocks 11 and 12 has alternate machined rectangular cutouts 14 and 15, with the cutouts 14 of block 11 being aligned respectively in fixture 10 with the cutouts 15 of block 12, and vice versa. An elongated channel 16 is machined in the bottom of each cutout 14. Fixture 10 is loaded by inserting in each of the spaces between adjacent...