| 摘要 |
PROBLEM TO BE SOLVED: To provide a piano keyboard device capable of reducing time and cost required for manufacture of a piano.SOLUTION: A piano keyboard device includes a support rail 920 made of resin, ribs 3a and 3b formed integrally with the support rail 920 and each having a penetration part, a support assembly having an open hole aligned with the position of each penetration part of the ribs 3a and 3b on a rear end part, and a shaft 21 penetrating each penetration part of the ribs 3a and 3b, and the open hole on the rear end part of the support assembly aligned with the position of each penetration part of the ribs 3a and 3b.SELECTED DRAWING: Figure 2 |
