| 摘要 |
<p>A keyboard structure capable of suppressing a depth dimension of a keyboard instrument and rearward displacements of key main bodies to thereby prevent plastic deformation of hinges. White (27) and black (28) key main bodies are each disposed for pivotal motion around a common base end (20), serving as a key fulcrum, in a key depression/release direction via a hinge (24,25,26) extended therefrom vertically downward. A rear stopper (42) is provided in an intermediate portion of a key frame (10), and a contact portion of a stopper contact member (25a,30a) is in light contact with a front surface of the rear stopper when a key main body is in a key depression initial position. In a key-nondepressed state, when a force exerting toward the rear is applied to a key main body, the rear stopper applies the contact portion with a force exerting toward the front against the force applied to the key main body, thus suppressing a rearward displacement of the key main body.</p> |
