INNER RIM/OUTER RIM ATTACHING STRUCTURE OF GRAND PIANO

摘要

PROBLEM TO BE SOLVED: To provide the inner rim/outer rim attaching structure of a grand piano whereby the inner rim and outer rim can be accurately and easily positioned in the circumferential direction by use of a simple structure so that the outer rim can be attached to the inner rim without a gap. ;SOLUTION: In the inner rim/outer rim attaching structure of a grand piano for attaching an outer rim 3 to an inner rim 2 by bonding the inner peripheral surface of the outer rim 3 to the outer peripheral surface of the inner rim 2, positioning engagement means 9, 14 are provided respectively in a predetermined circumferential positions on the outer peripheral surface of the inner rim 2 and the inner peripheral surface of the outer rim 3, and the outer rim 3 is attached to the inner rim 2 with the engagement means 9, 14 held engaged with each other.;COPYRIGHT: (C)1999,JPO