| 摘要 |
An antenna device comprises a longitudinal antenna element (20) and is movable between an extended end position and a retracted resting position via a fully retracted operating end position. A spring element is arranged to exert an axial force on said antenna element in the direction of the extended end position. The antenna element (20) is provided with first notches (26a-d) arranged to co-operate with ribs (36a-d) arranged on a blocking element (30) arranged around said antenna element and second notches (24a-d) arranged to co-operate with cam surfaces 34a-h) on the blocking element (30). By moving the antenna element to the fully retracted position, the second notches and the cam surfaces co-operate to move the blocking element between blocking positions, in which axial displacement of said antenna element from said third resting position to said first end position is prevented, and non-blocking positions, in which axial displacement of said antenna element is allowed. The antenna device comprises few parts, thereby being reliable and easy to manufacture and assemble. |
