| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure for allowing all of a display body, inclination structure and extension structure to interlock with each other in a variable capacity type keyboard device. SOLUTION: In the variable capacity type keyboard device capable of inclining a supporting plate by allowing the supporting plate to interlock with a display body and providing the supporting plate with a movable unit capable of moving a switch group to be horizontally extended, one end part of a link arm to which at least two arms are rotatatably connected is rotatably fitted to the movable unit of the switch group, a guide groove for guiding a sliding member such as a cylindrical roller member provided projectingly on the other end part of the link arm is provided to a body case supporting the supporting plate and the movable unit is extended by the motion of the link arm when the position of the supporting plate is changed to the direction of the display body while inclining the supporting plate by the operation of the display body. A 1st pulley and a 2nd pulley are provided to the supporting plate so as to stretch a wire connected to the display body, the movable unit of the switch group is fixed to the wire and the movable unit is extended by the displacement of the wire when the position of the supporting plate is changed to the direction of the display body while inclining the supporting plate by the operation of the display body.
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