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Compact, Integrated Computer System Planar Assembly Assist to Prevent Backside Component Damage

IP.com Disclosure Number: IPCOM000230054D
Publication Date: 2013-Aug-15
Document File: 8 page(s) / 2M

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a design approach which allows for easy insertion and extraction of circuit cards into a mechanical structure and mitigates the risk of damaging backside circuit card components.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 52% of the total text.

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Compact, ,

Integrated Computer System Planar Assembly Assist to Prevent Backside

       Integrated Computer System Planar Assembly Assist to Prevent Backside Component Damage

Disclosed is a design approach which allows for easy insertion and extraction of circuit cards into a mechanical structure and mitigates the risk of damaging backside circuit card components.

    Circuit cards often have components soldered to both the top side and bottom side. For those cards which are supported by and secured to mechanical structure, there is always a risk of damaging backside components when installing the cards, as seen on prior products. One way to alleviate this, which was done on prior programs, is to remove components which might reside on the backside of the card in the areas where contact with mechanical structures is possible. However, this could force many components to be moved to the top side, especially for planars, which might slide into mechanical enclosures and cause the planar to grow substantially in size (and cost).

    Another way, which was done on prior programs, is to educate the suppliers on properly installing the planars (vertically drop them in before sliding slightly forward to compress gasket on the front). However, suppliers were not careful enough and, given there were no mechanical restrictions in the past designs, they were sliding in the planars all the way from the back even though the installation instructions prohibited those actions.

    The invention being disclosed includes short, horizontal features (such as cylindrical pins, flanges, etc.) which attach to the side walls of a system chassis. These horizontal features provide a surface for the card to slide in and are short so that they only contact the card on its outer edges, where components normally do not reside. The card has cutout notches in the exact locations where it would then drop down past the features and align with the mechanical structure.

    While this invention outwardly seems fairly simple, its simplicity creates the most compact, cost-effective, and reliable solution and took a considerable amount of development effort to achieve. There is no other solution that is this simple as well as compact. Given this simplicity is something that can be easily copied by competitors in the marketplace, the need to protect IBM*'s investment is very important.

    One embodiment of this invention can be seen in the following example. In this example, the system chassis has cylindrical pins pressed horizontally into the vertical side walls as shown in Figures 1, 2, and 3.

Figure 1 depicts the back ISO vie...