| 摘要 |
PURPOSE: An automatic antenna is provided to achieve an improved use convenience by extending antenna through a simple switch pressing action, while reducing the size of telephone adopting such antenna. CONSTITUTION: An automatic antenna comprises a first stage antenna unit(220), a second stage antenna unit(210) and a locking element(230). The first stage antenna unit is formed of a conductive material, and has the locking element for restricting extracting and extending action of the second stage antenna unit. The second stage antenna unit disposed within the first stage antenna unit, includes a spring(215) arranged in the lower portion of the second stage antenna unit, guide rings(212,214) for permitting smooth sliding of antenna, and a stopper(213) arranged in the intermediate portion of the second stage antenna so as to be caught at the locking element of the first stage antenna when a top(211) of the antenna is pressed. The locking element includes a slide type locking vane(231) having a through hole for catching or releasing the second stage antenna unit; a catching semi-circular portion formed at the front portion of the through hole; a releasing semi-circular portion formed at the rear portion of the through hole; and a press-button switch(237) arranged in rear of the slide type locking vane, and which is coupled with a spring(238) and protruded outward.
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