| 摘要 |
PURPOSE:To improve the reception sensitivity of a radio set and the effect of rust proof by connecting an antenna earth to a car body via a mounting screw and a spring nut fixing an antenna base of a panel of the car body. CONSTITUTION:Since the antenna earth 17 faces a base hole 19 via an earth plate 17a in the antenna base 3, when the mounting screw 9 is screwed to a screw hole 25 of a terminal part 23 of a spring nut 7 and the base hole 19, while the screw 9 is connected to the earth plate 17a and the terminal part 23, a projection 27 of the screw part 23 rises with a reaction at the screwing and contacts strongly a rear side 1b of the car body panel 1 and is brought into metallic contact while breaking finally the coated face. Thus, the antenna earth wire 17 is grounded to the car body in the short route, the S/N at the reception is improved and the effect of ruse proof of the antenna mounting part is improved. |
