| 摘要 |
PURPOSE: To provide a keyboard device of an electronic musical instrument capable of realizing a let-off feel and a good touch response extremely approximate to the touch response of an acoustic piano at a low cost. CONSTITUTION: This keyboard device has a freely turnable keyboard 2, a jack 4 which is movable and turnable according to turning of this keyboard 2, a hammer 3 which is pressed and turned by this jack 4 and is so constituted as to disengage the jack 4 during this turning, a keyboard switch 6 which has first and second contacts and is actuated by successively closing the first and second contacts to detect the key touch state of the keyboard 2 when pressed by the turning hammer 3 and a regulating member 5 which regulates the return of the hammer 3 by coming into contact with the hammer 3 to be turned to be returned. The first contact of the keyboard switch 6 is so constituted as to be opened in the key touch stroke position smaller than the key touch position where the hammer 3 comes into contact with the regulating member 5. |
