| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an action of a piano which can dispenses with a pin for fitting a spring urging a rotary body and enables the spring to easily be fitted thereby enabling the number of components and the assembly man-hour thereof to be reduced resulting in reduction its manufacturing cost. <P>SOLUTION: The action is equipped with a support 13 which has an engagement part 13a, the rotary body 21 which has an engagement part 21a, is freely turnably supported on the support 13 and disposed at a key release position in a key release state of a key 3 and turns by depression of the key 3, and the spring 25 which has one end engaged with the engagement part 21a of the rotary body 21 and the other end engaged with the engagement part 13a of the support 13 and urges the rotary body 21 toward the key release position. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
