| 摘要 |
PROBLEM TO BE SOLVED: To provide a helical antenna device, capable of preventing the rotation of a wire holder which is caused by violent vibrations, etc., without increasing the effort and time of manufacturing. SOLUTION: A projecting part 43, that extends in the length direction of a body 41 of a top cover 40 covering a helical antenna 10 and is engaged with a cut part formed at the outer circumferential part of a wire holder 13, is formed on the inner circumferential surface of the body 41. The rotation of the wire holder in the circumferential direction is prevented, to prevent wire wounded around a bobbin from being rewound with the cut part being engaged with the projecting part.
|
