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EXTRUDED HORIZONTALLY MULTIPLE CONFIGURED CHASSIS IN A 19" RACK WIDTH

IP.com Disclosure Number: IPCOM000008083D
Original Publication Date: 1997-Mar-01
Included in the Prior Art Database: 2002-May-16
Document File: 2 page(s) / 81K

Publishing Venue

Motorola

Related People

Gary Peterson: AUTHOR [+2]

Abstract

Much radio frequency infrastnxture equipment is required to mount in an EIA compatible relay rack or cabinet. In many of the relatively low vol- ume products developed for two way radio infra- structure equipment, very little tooling dollars are available and yet low piece part cost is required. Traditionally, EIA rack mount compatible chassis' are made from short run fabricated/stamped sheet metal, or die casting technology. These designs are typically structurally sound with the added benefit of EMI/RFI shielding. For certain applications, extremely low volumes make the tooling dollars required for custom stamped or die cast designs prohibitive. A short run fabricated sheet metal enclosure is a feasible alternative but would result in a high piece part cost due to the more labor inten- sive nature of its fabrication. An attractive and unique alternative is extrusion technology.

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m MOTOROLA Technical Developments

EXTRUDED HORIZONTALLY MULTIPLE CONFIGURED CHASSIS IN A 19" RACK WIDTH

by Gary Peterson and Raul Olivera

INTRODUCTION

  Much radio frequency infrastnxture equipment is required to mount in an EIA compatible relay rack or cabinet. In many of the relatively low vol- ume products developed for two way radio infra- structure equipment, very little tooling dollars are available and yet low piece part cost is required. Traditionally, EIA rack mount compatible chassis' are made from short run fabricated/stamped sheet

metal, or die casting technology. These designs are typically structurally sound with the added benefit of EMI/RFI shielding. For certain applications, extremely low volumes make the tooling dollars required for custom stamped or die cast designs prohibitive. A short run fabricated sheet metal enclosure is a feasible alternative but would result in a high piece part cost due to the more labor inten- sive nature of its fabrication. An attractive and unique alternative is extrusion technology.

Fig. 1

0 Motorola, 1°C. I997 151 March 1997

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0 M

MOTOROLA Technical Developments

PRINCIPLE OF OPERATION

  A potential design solution, consists of two identical closed tube extrusions assembled side by side to span the EIA 19" wide rack (see Fig. 1). Matching details on the sides of the tubes allow the extrusions to slide together loosely. To fully secure the tubes togethe...