| 摘要 |
PURPOSE:To enable accurate channel selection smoothly, by linking a variable tuning element to a member relatively moved left and right with a projection or inclined ridge in interlocking with a member which relatively moves back and forth and has an inclined line or projection. CONSTITUTION:When a channel selection member 1 is pressed, a pair of regulating pieces 4a, 4b are moved relatively back and forth by a pinion 3. An inclined ridge 5a of a tip of the regulating piece 4a is butted to a projection 26a, a transversally moving plate 14a moves left and a transversally moving plate 14b moves right via turning pieces 15, 16, an inclined ridge 26b is butted to a projection 5b and the slide of the member 1 is stopped. In this case, a link lever 21a also moves left to change a variable tuning element 23. Every channel selection member 1, the moving distance of the pieces 4a, 4b is adjusted to tune the variable tuning element 23 to a desired station. The center line of the moving range of the pieces 15, 16 comes to the inclination direction of the inclined ridges 5a, 26b. Thus, the transversally moving plates 14a, 14b are supported with a device frame 11 in pendant manner, allowing smooth and accurate channel selection with less friction. |
