| US 7,541,532 B2 | ||
| Key structure and keyboard apparatus | ||
| Ichiro Osuga, Hamamatsu (Japan); Kenichi Nishida, Hamamatsu (Japan); and Yoichirou Shimomuku, Hamakita (Japan) | ||
| Assigned to Yamaha Corporation, Hamamatsu-Shi (Japan) | ||
| Filed on Oct. 03, 2006, as Appl. No. 11/542,915. | ||
| Application 11/542915 is a division of application No. 10/940903, filed on Sep. 13, 2004, granted, now 7,176,370. | ||
| Claims priority of application No. 2003-320964 (JP), filed on Sep. 12, 2003; and application No. 2004-214199 (JP), filed on Jul. 22, 2004. | ||
| Prior Publication US 2007/0022864 A1, Feb. 01, 2007 | ||
| Int. Cl. G10C 3/12 (2006.01) | ||
| U.S. Cl. 84—436 [84/423 R; 84/433; 84/434; 84/441; 84/719; 84/744] | 9 Claims |
| 1. A key structure that is mountable in a keyboard apparatus, for functioning as a white key pivotally moved by key-depressing
operation, comprising:
an upper plate member having an increased width part corresponding to an end of the white key toward a player, said increased
width part having a lower surface; and
a wood part secured to said lower surface of at least said increased width part of said upper plate member, said wood part
having an increased width part having a substantially same width as said increased width part of said upper plate member,
wherein:
said wood part has a recess formed in a part thereof including said increased width part, the recess opens downward and having
a width which is not less than 50% and not more than 80% of a width of said increased width part of said wood part, and
a convex fitting part is fitted in the recess, a pair of hanging parts is provided such that the pair of hanging parts is
continuous with the convex fitting part, and a key operation guide slides within inner portions of the convex fitting part
and the pair of hanging parts in a key-depressing operation.
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