Multi-function key assembly for an electronic device

Abstract

An improved multi-function key assembly ( ) is provided. The multi-function key assembly includes a printed circuit board substrate ( ) having a popple dome switch array ( ) mounted thereto. Attached to the substrate is a button member ( ) adapted for use as a data input device for an electronic device. The button member has a central area or region ( ) and a contoured peripheral surface ( ) serving as a plurality of perimeter key regions ( ). The contour of the peripheral surface provides a user with tactile feedback in determining the location of the various key regions. The button member additionally includes a plurality of plungers ( ) extending from its bottom surface ( ). Each plunger corresponds to a specific key region and is capable of actuating a popple dome switch ( ) for that specific key region. The assembly may include a base ( ) having a plurality of legs ( ). The base can be mounted to the substrate or a housing ( ) and supportably allows the button member to pivot about a central plunger ( ) located on its bottom surface. The base may additionally include indentions ( ) on its legs and a raised central hub ( ) for providing clearance between the base and the popple dome switch array.