| 摘要 |
Disclosed is a power antenna apparatus for automatically extracting/retracting an antenna. A motor is controlled by a control circuit to generate a rotational force. An antenna housing has a guide slot extending longitudinally on an inner surface thereof. A rotary member is installed in the antenna housing and is rotated by the motor. A coil spring is rotatably accommodated in the antenna housing and one end thereof is fixed to the rotary member. An antenna conveying member is received together with the antenna within the coil spring as being fixedly coupled with the antenna by a lower end of the antenna. The antenna conveying member has protrusions which are loosely inserted into the guide slot of the antenna housing and conveys the antenna along with the guide slot to extract or retract the antenna by means of a rotation of the coil spring. Other embodiments are disclosed for flexible installation of the apparatus. Application of the apparatus to a wireless telephone is also disclosed.
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