| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a keyboard device that can reproduce the feel of click unique to acoustic pianos. <P>SOLUTION: As a first slope 45c (flat or curved) of a slide contact face 45 is inclined in the direction of gradually moving away from the base of a projection in the displacement direction of the projection when a key is pressed, the resistive force working on the projection can be reduced and a gradual increase in the feel of resistance can be restrained; furthermore, by causing swells 45d positioned everywhere to increase the resistive force working on the projection having passed the first slope 45c, the feel of resistance can be increased and, after the projection has ridden over the swells 45d, the feel of resistance can be decreased; as the difference in the feel of resistance before and after the swells 45d in this way can be widened, the feel of click unique to acoustic pianos can be reproduced. <P>COPYRIGHT: (C)2012,JPO&INPIT |
