| 摘要 |
PROBLEM TO BE SOLVED: To provide an extensible antenna in which a configuration for tilting an element is downsized and the length of the element is made larger when the element is extended. SOLUTION: The extensible antenna 1 is provided with three-staged elements, from a first element 11 to a third element 13, and the lower portion of the third element 13 is fixed on a joint 20. A plate-like holding piece 23a formed on the upper portion of a shaft 23 is held and pivoted by a pair of holding parts 20a formed in the joint 20. A coil spring 24 is accommodated while being compacted between a flange part 23b formed in the shaft 23 and the upper surface of a base 22, and the shaft 23 is energized downward by the coil spring 24. COPYRIGHT: (C)2011,JPO&INPIT
|
