DIAL DEVICE

摘要

PURPOSE:To prevent the generation of electrical noises due to the rubbing between a tuning knob and an intermediate gear, by inserting with pressure a coil spring between the knob and the gear to unify them. CONSTITUTION:Plural radial ribs 17-1 are formed on the concentric circles at the center part of a tuning knob 17 and fitted to a shaft 16-4 of an intermediate gear 16. A coil spring 15 having an inner diameter slightly smaller than the outer diameter of the rib 17-1 is inserted with pressure to the outer circumference of the rib 17-1. The knob 17 is put with pressure into the shaft 16-4 and held there. Therefore both the knob 17 and the spring 15 are always kept in a body. This prevents the spring 15 from rubbing the knob 17 and therefore prevents the generation of electrical noises owing to the rubbing between the knob 17 and the spring 15.