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Method for a stiffener plate for add-in cards to prevent component breakage or dislocation under extreme dynamic loads

IP.com Disclosure Number: IPCOM000006619D
Publication Date: 2002-Jan-16
Document File: 4 page(s) / 82K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method for a stiffener plate for add-in cards to prevent component breakage or dislocation under extreme dynamic loads. Benefits include decreased damage and failure rate.

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Method for a stiffener plate for add-in cards to prevent component breakage or dislocation under extreme dynamic loads

Disclosed is a method for a stiffener plate for add-in cards to prevent component breakage or dislocation under extreme dynamic loads. Benefits include decreased damage and failure rate.

Background

              Some 6-inch to12-inch conventional add-in cards incorporate a guide at the end of the card to help retain the card in the slot of a computer chassis during extreme dynamic loads. However, this guide is known to pop out of the computer chassis in some instances and induce component or circuit-board damage. Many add-in cards do not have a stiffener or retention mechanism and are subject to failure under extreme dynamic loads.

Description

              The disclosed method includes a rigid stiffener plate (see Figure 1) that is attached to a computer add-in card (see Figure 2) to prevent breakage or dislocation of components under extreme environmental dynamic loads, such as shock and vibration. This stiffener is the key element of the method. Inclusion of this device enables the add-in card to meet all critical dimensions, such as PCI Specification 2.2 (see Figure 3).

              No negative impact occurs to the functional or thermal performance of the add-in card.

              Inclusion of this device enables an add-in card to function without any performance degradation after extreme dynamic load such as 50G unpackaged shock testing or 20-500 Hz at 0.02g2/Hz (flat) unpackaged vibration testing (see Fig...