| 摘要 |
PURPOSE:To attain quick channel selection by separating a knob provided to a push lever from the shaft lever, fitting the knob to a device frame and forming teeth to the knob so as to mesh the teeth with a transmission gear having a small diameter provided to the rear end of the shaft lever. CONSTITUTION:The knob 26 separated from the shaft lever 2 is formed larger in its diameter than that of the knob 7 provided to the other lever 1, the tooth part 27 is provided along its inner circumference face and the knob 26 is supported to the device frame 8 via the support lever 28 freely rotatably and movably in forward/reverse directions. The transmission gear 32 meshing with the tooth part 27 is fixed to the rear end of the lever 33 constituting the push lever 25. In selecting continuously the station by the manual operation, the knob 26 is pressed to mesh the gears 27 and 32 to rotate the knob 26.
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