| 摘要 |
PURPOSE:To prevent the stored frequency from being changed even for a long range of usage by inserting pivotally an assembled rotary knob capable of externally operating into a push button. CONSTITUTION:In depressing the push button 26, a support piece 3 and a main gear 10 go forward in one body together with a shaft lever 2, any channel selecting members 14-14' positioned to the left and right go forward together with the operating member 1, the state is held by a locking part and a desired station is selected. Further, in turning the rotary knob 27 assembled in the push button in the figure, channel selecting pieces 20, 20' are moved forward or backward by screw coupling with screw parts 16, 16' and a slide plate is moved forward or backward while being brought into pressure contact with storage parts 19, 19' to attain a preset operation. Then, even if a torque due to contact with an external object is exerted, the operating shaft will not be rotated, thereby preventing the storage frequency from being changed. |
