Browse Prior Art Database

CONNECTORS FOR USE WITH MULTIPLE PCBs

IP.com Disclosure Number: IPCOM000005962D
Original Publication Date: 1990-Oct-01
Included in the Prior Art Database: 2001-Nov-20
Document File: 3 page(s) / 94K

Publishing Venue

Motorola

Related People

Graham Leonard Adams: AUTHOR

Abstract

In order to use the optimum space envelope of an electronic module, it is an advantage to use the vertical plane by stacking PCBs one above each other. In practice this is difficult to do because the tracking to boards not connected directly to the connector becomes long and complex. As a result this approach is normally limited to 2 boards only. In addition if the connectors have 3 or more rows of pins, the tracking near the connector becomes very dense.

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MOTOROLA Technical Developments Volume 11 October 1990

CONNECTORS FOR USE WITH MULTIPLE PCBs

by Graham Leonard Adams

   In order to use the optimum space envelope of an electronic module, it is an advantage to use the vertical plane by stacking PCBs one above each other. In practice this is difficult to do because the tracking to boards not connected directly to the connector becomes long and complex. As a result this approach is normally limited to 2 boards only. In addition if the connectors have 3 or more rows of pins, the tracking near the connector becomes very dense.

   This article describes a novel approach, which allows the practical use of multiple PCBs for any type of electronic module. The structure of the assembly is shown in the figures below. Figure 1 shows a 3 stack PCB version, whilst figure 2 shows a 2 stack PCB version. Two of the parts are common to both designs.

   The construction consists of one part (1, 2, 3) containing the pins for each individual PCB (4, 5, 6 respectively), plus one window (7) to hold the assembly together. For assembly each element of the connector is soldered to its respective PCB, then they are assembled together using snap clips (6). Molded in lips form a seal between each layer. The window is then slid over the connector elements until it snap clips in place. A molded in Santaprene gasket gives the seal be- tween the connector elements and the window. This same seal is used to locate and seal with the housing.

   The advant...