| 摘要 |
PURPOSE: To secure an input by means of a one hand operation by permitting projecting parts to face against key switches with an interval at positions in the keytop direction of the key switch so as to attach a depressing plate. CONSTITUTION: Key switches 2 are provided at the upper end part of a grip bar 1, four key switches 4 are provided and formed toward the lower direction on the periphery of the other lower end part 3 and the depressing plate 5 where the four projecting parts 6 are provided on the periphery at the upper side of a disk plate is attached to the lower surface of the lower end part 3 so as to form a system. The number of the projecting parts 6 are the same as that of the lower end part key switches 4 and the projecting parts 6 are fixed oppositely to the key switches 4 in the key top direction of the position key switches 4. The depressing plate 5 formed by being attached to the central fixing round holes of the lower surface of the lower end part 3 by screws. An adjustment slit is provided between the projecting part 6 and the projecting part 6 on the depressing plate 5. It is provided in order to permit the adjacent projecting part 6 not to move by linkage when one projecting part 6 is depressed. |
