| 摘要 |
A wheel includes a disk form wheel, a tire fitted to the wheel, and a tire tube contained between the wheel and the tire, and is provided with an air pressure detection device intermediately disposed between the tire tube and the wheel. A metallic line form reception antenna is inserted by molding into a front fender. Since the distance from a transmission means fitted to an air pressure sensor to the reception antenna is reduced, reception sensitivity can be enhanced. In addition, since the reception antenna can be pitched to about the size of the fender, the reception sensitivity can be enhanced. Further, since jigs for fixing the antenna are needless, a reduction in the number of component parts can be contrived, and the antenna can be fixed without spoiling the appearance.
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