Importance

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Abstract

An improved multi-function key assembly (12) is provided. The multi-function key assembly includes a printed circuit board substrate (28) having a popple dome switch array (26) mounted thereto. Attached to the substrate is a button member (22) adapted for use as a data input device for an electronic device. The button member has a central area or region (48) and a contoured peripheral surface (30) serving as a plurality of perimeter key regions (32-46). 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 (54-68, 72) extending from its bottom surface (70). Each plunger corresponds to a specific key region and is capable of actuating a popple dome switch (154, 156) for that specific key region. The assembly may include a base (76) having a plurality of legs (90). The base can be mounted to the substrate or a housing (2) and supportably allows the button member to pivot about a central plunger (72) located on its bottom surface. The base may additionally include indentions (110) on its legs and a raised central hub (88) for providing clearance between the base and the popple dome switch array.

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First Claim