Patent ID: 6985115
Filing Date: 2006-01-10
Classification: H01Q

Abstract:
1. An automatic antenna adapted for use with a main body of a portable electronic device, the main body comprising an antenna holder, the automatic antenna comprising: a shaft having a key on one end thereof; a securing element defining a hole, a plurality of blocks being symmetrically disposed on an inner wall of the securing element in the hole, the blocks defining a plurality of slots therebetween, each block defining a recess; a sliding element including a plurality of sliding arms symmetrically disposed on an outer wall thereof, and an end surface having peaks; a rotating element including a peripheral cam portion, the cam portion having a cam surface movably engaging with the peaks of the sliding element, a plurality of projections protruding from a periphery of the cam portion, a portion of the rotating element being received in the sliding element; a housing, a portion of the housing being received in the securing element, and another portion of the housing adapted to be received in the antenna holder; and a first elastic element received in and between the rotating element and the housing; wherein the shaft extends through the securing element, the sliding element, the rotating element, the first elastic element, and the housing in that order, with the key of the shaft abutting against the sliding element; and the sliding arms can slide within the slots and the recesses, and the projections can slide in the slots.