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Socket Latch with Extended Arm to Reduce Socket Activation Force

IP.com Disclosure Number: IPCOM000019853D
Publication Date: 2003-Oct-01
Document File: 3 page(s) / 135K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method that uses a socket latch with an extended arm to reduce the engagement force need on the land grid array (LGA) socket lever to activate the socket.

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Socket Latch with Extended Arm to Reduce Socket Activation Force

Disclosed is a method that uses a socket latch with an extended arm to reduce the engagement force need on the land grid array (LGA) socket lever to activate the socket.

Background

As shown in Figure 1, the current state of the art uses a steel wire to press on the socket cover which in turn presses on the package substrate, forcing the package lands into engagement with the LGA socket contact. The current state of the art requires excessive force on the lever arm to engage the substrate and the socket.

General Description

Figure 2 outlines one approach to reduce the force needed to activate the socket. Like the current state of the art, the lever is made of steel wire, but when activated the sleeve acts as the stiffening body to connect the two wires so that they form a lever with an extended arm length. To return the arm to a closed position, the cut-out on the sleeve is used to fold the extended wire back to its resting position.

Figures 3 and 4 outline another approach. When closed, the lever is the same length as the current state of the art, but when opened the hinged lever can be extended. This lever can be made of molded reinforced plastic or stamped metal.

Advantages

By lengthening the socket arm, the disclosed method uses less force to engage the substrate to the socket.

Fig. 1. State of the art wire lever to engage the package to the socket

Fig. 2 The folded wire proposal to lower the socket to packa...