| 摘要 |
PURPOSE:To provide the keyboard device of the electronic musical instrument, on which a key touch close to that of an acoustic piano is obtained, by compact constitution. CONSTITUTION:A keyboard frame 21 is provided with a key 25 so that the key 25 can freely be swung up and down by a projection 23, and a hammer 26 which abuts on a projection 27 when the key 25 is pressed to rotate and then returns by gravitation when the key is released is provided below the key 25; and when the key 25 is pressed and the hammer 26 rotates to a specific position, the frictional engagement part 35 of the hammer 26 abuts on the abutting part 42 on the reverse surface of the key 25 to absorb the turning force of the key 25. In this case, the projection part 27 and a flat part 34 are made to abut on each other on a plane containing the straight line connecting the axis of rotation of the key 25 and the axis of rotation of the hammer 26. Therefore, there is no slip at the point where the projection and hammer abut on each other right after the keying and the turning force of the key can be transmitted to the hammer with efficiency. |
