| 摘要 |
PURPOSE:To improve channel selection precision by setting invariably constant position relation among a channel-selection member and a couple of transverse plates during channel selection. CONSTITUTION:When a couple of storage shafts 5 and 5' meet the vertexes of cam parts 15 and 15' of the opposite transverse plates 16 and 16' and a channel- selection member A stores the extent of transversal displacement of a transverse member C, a couple of regulating plates 6 and 6' are restrained while turning in relative directions. Namely, the member A stores the extent of transversal displacement of the member C by distance (l) between two points of the storage shafts 5 and 5'. After the member A stores the extent of transversal displacement of the member C, the member A is slid by operating a push button for channel selection, thereby permitting the storage shafts 5 and 5' to meet the vertexes of the opposite cam parts 15 and 15'. Consequently, the transverse plates 16 and 16' move in relative directions in accordance with the distance (l) between the storage shafts 5 and 5', and the extent of transversal displacement of the member C is set by the relative movement distance. Consequently, even if the member A and a tuner frame B has play, precise channel selection is performed. |
