| 摘要 |
PROBLEM TO BE SOLVED: To provide a keyboard device which can freely vary the weight of a key that a player feels in response to player's desires. SOLUTION: A hammer 6 is provided in a keyboard frame 2 and the base part 7a of the arm 7 if the hammer 6 is coupled with a key 1 with a pin 5. As the key 1 rotates on a pole 3, the hammer 6 rotates on a fulcrum 14 and also places a load on the key 1. The fulcrum 14 of the hammer 6 is at a projection part 13 provided to a slider 12 which is moved by a spiral shaft 11 rotated by a motor 10. Here, the motor 10 is driven and then the fulcrum 14 is moved to adjust the load placed on the key 1 by the hammer head 8 of the hammer 6. |
