| 摘要 |
PURPOSE:To eliminate the looseness between the component and unit frame constituting the component and then securing the uniform channel selection stroke of the component, by providing the movable component, the specifying plate possessing the memory bar plus the variable tuning element which operates in correspondence to the movable displacement amount respectively. CONSTITUTION:Channel selection component A consists of arm metal 2 having rib 1, specifying bar 5 comprising the long-size plate positioning between metals 2, and others. Bar 5 is made rotatable freely to arm metal 2 via pivot 3, and furthermore a pair of memory bars 4 and 4' are attached in the same direction and with some space secured between. At the same time, suppression bar 7 which can be tilted freely by bearing axle 6 is provided to metal 2, thus preventing the idle end of bar 5. In addition, operation part bar 8 is attached to bar 7 via push-button 9 to be born by unit frame B. With such constitution, rotary part bars 12 and 12' interlocking bars 4 and 4' are operated with operation of button 9, and this displacement amount is transmitted to plate-type movable component C via long hole 14 and coupling pin 15. Thus the operation is performed for the channel selection. |
