| 摘要 |
PURPOSE:To reduce channel selection errors by providing a shaft lever supported by a support frame movably back and forth at the center of a slide bar which is divided into plural parts and connected to each other. CONSTITUTION:A slide bar interlocking a variable turning part is divided into parts 35a and 35b. These parts are coupled to each other through an engagement hole 41 and via a pin 42 and supported slidably by a guide lever 38 at the outer sides of those slide parts. Then slide levers 39a and 39b sliding to a support frame 13 are supported by shafts at the center of each of both parts 35a and 35b respectively. The lever 39a is energized backward by a spring 40 for attachment of a variable element 37. When an optional button 12 is pushed, a channel selection member 18 at one side moves forward. This state is held by a lock plate 31 and a channel selection piece (not shown in the figure) of the held member 18 presses the slide bar. The engagements 41 and 42 are secured even though the channel selection piece pushes the bar 35b to which no element 37 is attached. Thus the element 37 is varied by the bar 35a. As a result, the length of the side bar can be substantially shortened to reduce a channel selection error. |
