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Snap-on Sheet Metal Printed Circuit Board (PCB) Spacer

IP.com Disclosure Number: IPCOM000202005D
Publication Date: 2010-Nov-30
Document File: 7 page(s) / 1M

Publishing Venue

The IP.com Prior Art Database

Abstract

A sheet metal Printed Circuit Board (PCB) spacer that improves assembly by snapping into place, retained by a unique PCB edge routing, until the two PCB's are fastened together. This system also allows for screw bosses to pass through the PCB's while maintaining strength ribs to housing side walls. This system pushes the mechanical features to the edge of the board, minimizing the impact to usable PCG area.

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Title: Snap-on Sheet Metal Printed Circuit Board (PCB) Spacer

Brief Description:

A sheet metal PCB spacer that improves assembly by snapping into place, retained by a unique PCB edge routing, until the two PCB’s are fastened together.  This system also allows for screw bosses to pass through the PCB’s while maintaining strength ribs to housing side walls. This system pushes the mechanical features to the edge of the board, minimizing the impact to usable PCB area.

There is generally a 1mm border around the perimeter of a PCB that is not usable component area.  This spacer uses that space, and area close to it, to support the boards.  The board features are very easy to create by simply plunging the router during board outline creation.  The spacer concept is designed to use the sloped surfaces of a board corner to serve as a natural ramp for the snap features.  As such, the spacer can be pushed on to snap in place.  Even though the metal can be as thin as 0.2 mm, part strength is achieved by using a broad section (i.e. a straight piece of paper can’t hold much load but a folded piece on end can). Tight tolerances can be held because the parts are fabricated using an high volume progressive die (once you dial it in and turn it on you get a lot of consistent parts at low cost).

Most important features of the invention:

Snap on assembly retention

 

Thin walled spacer utilizes minimum PCB area

 

Spacers are retained for assembly ease without the use of expensive Surface...