| 摘要 |
<p>There is disclosed herein a piano frame (10) comprising a main plate (12) having a first major surface (14) for supporting piano strings and an opposite second major surface (16) for supporting a soundboard (18). First (20), second (22), third (24) and fourth (26) elongate anchor zones are located on the first major surface (14) for anchoring, respectively, first end (upper, tuneable end) and second end (lower, hitched end) of bass strings and first end (upper, tuneable end) and second end (lower, hitched end) of treble strings. As best seen in Figs. 1 and 2, a plurality of openings (28) are provided in the main plate (12) between the third anchor zone (24) and the fourth anchor zone (26). A truss defined by a plurality bracing members (30) integrally formed in the main plate extends between the third anchor zone (24) and the fourth anchor zone (26). The bracing members (30) are located wholly between a plane extending between the third (24) and fourth (26) anchor zones and a plane defined by the second major surface (16) of the main plate (12).</p> |
