Piano e.g. baby grand piano, has frame having flat plates that form respective sides of frame, and longitudinal profile extending from plate to another plate and connecting plates, where profile and plates are made of aluminum

摘要

The piano (1) has a sound board (8) interposed between a barrier (4) and a frame (5). The frame has a flat plate (53) forming its one side (51), where the plate is integrated to a base (7). Another flat plate (54) forms another side (52) of the frame, and is placed on a belt (43) of the barrier. A longitudinal profile (56) extends from the plate (53) to the plate (54), and connects the plates, where the profile and the plates are made of aluminum. The profile extends parallel to a stack of cords (6). The base is integrated to the barrier by an arm (71) made of aluminum.