| 摘要 |
PURPOSE:To make it possible to lock selection channels easily in the electronic channel selection system, by providing selection knobs and lock knobs in pairs. CONSTITUTION:Feather-touch selection knobs 6 and lock knobs 7 are provided in pairs. Depressing knob 7 pushes feather-touch switch 26 through projection 24 to make a channel selection. At this time, the whole knob 7 is hooked by stopper 28 with the elasticity of movable arm 22 of knob 7. Consequently, the selected channel is locked. To release the lock, knob 7 is only pushed down. Therefore, a selected channel can easily be locked by a combination with a feather-touch switch. |
