| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide coupling mechanism for a piano which tightly surely, and easily couples two components of the piano in a rotatable state. SOLUTION: The component coupling mechanism 1 which couples the two components 10 and 11 of the piano rotatably with each other is equipped with a hinge 12 which have two rotatable hinge members 12a and are provided with holes 13 in the two hinge members 12a and screws 14 for fitting the two hinge members 12a to fitting surfaces 10a and 11a through the holes 13, and long grooves 15 for enabling the screws 14 to be screwed in are cut in the fitting surfaces 10a and 11a along the length.</p> |
