| 摘要 |
PROBLEM TO BE SOLVED: To provide a keyboard apparatus which produces key touch feeling extremely approximate to a natural keyboard instrument and achieves automatic performance by smooth key operations, with a simple construction.SOLUTION: The keyboard apparatus 10 includes: a key 20 pivotally supported centering on a key supporting point 12; a mass body 30 imparting a reaction force to a performance operation into the key 20 linked with the key 20; a transmission member 46 transmitting a load from one of the key 20 and the mass body 30 to the other by abutting with both of the key 20 and the mass body 30; and an electromagnetic actuator 40 driving the transmission member 46 toward at least one of the key 20 side and the mass body 30 side by a fixed coil 41. Excellent key touch feeling is achieved not only by an action of the load applied from the mass body to the key but also through load control by the electromagnetic actuator 40. Thus, it is made possible to faithfully reproduce the key touch feeling approximate to a natural keyboard instrument such as an acoustic piano, with a simple construction and facilitated control. |
