| 摘要 |
PROBLEM TO BE SOLVED: To accurately detect a pressing operation position of an operation knob while increasing the operation types in a structure where the pressing operation position of the operation knob is detected by multiple sensors.SOLUTION: A first operation knob 7 is provided in a circular opening 6a on an upper surface of a switch case 6 so as to conduct pressing operation. Three pressing parts 9 are provided on a rear surface of the first operation knob 7 so as to be spaced 120 degrees apart. Three pressure sensors 12 are provided on a wiring board 11 so as to correspond to the pressing parts 9. A transmission part 15 having a compression coil spring 16 is provided between each pressing part 9 and each pressure sensor 12. A second operation knob 8 is provided in a circular opening 6b on a bottom surface of the switch case 6 so as to conduct pressing operation. The wiring board 11 is attached to the rear surface of the second operation knob 8 in the placement state. When the second operation knob 8 is pressed from the lower side to the upper side, the three pressure sensors 12 respectively receive relative pressing force from the pressing parts 9 through the transmission parts 15. |
