| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a keyboard instrument whose keying reaction force can be set while a reaction force generated in a final keying stage for keying operation detection is taken into consideration without making the constitution complex and which gives a desired keying feeling by eliminating the influence of the keying operation detection. <P>SOLUTION: When a stationary touch is made, a 1st actuator 11 abuts against a first switch part 25 to apply a reaction force F2 and then a 2nd actuator 12 abuts against a second switch part 26 to apply a reaction force F3; and then a switch part 26 buckles to reduce the reaction force. Namely, the reaction forces of the switch parts 25 and 26 cooperate with energizing operation in a return direction based upon the weight of a mass body 10 to give a let-off feeling right before the keying ends. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
