Patent ID: 6239754
Filing Date: 2001-05-29
Classification: H01Q

Abstract:
An extending and retracting mechanism for an antenna in a portable phone, comprising:a driving motor producing a force;a force transferring means receiving the force from the driving motor;a pulley arrangement connected with the force transferring means having a first pulley roller and a timing belt for transferring the force from the first pulley roller to a second pulley roller;a driving roller that receives the force from the second pulley roller;a rod antenna disposed between the driving roller and a driven roller, wherein the rod antenna is extended/retracted by rotation of the driving roller and the driven roller;a first main bracket for holding the driving motor, a first free end for supporting the force transferring means;a second main bracket engaging the first main bracket; anda sub-bracket connected to the second main bracket, for supporting the driven roller and biasing the driven roller in a direction towards the driving roller.