| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide the action of an upright piano that can improve a repetitive strike on a key with simple constitution. <P>SOLUTION: The action is provided with a wippen (support) 6 which is thrust up by a key 4 to turn upward, a jack 7 which is provided to the wippen (support) 6 and turns between an engagement position where a hammer thrust-up part 7b is engaged with a hammer 3 and a disengagement position where the hammer thrust-up part 7b is disengaged from the hammer 3, a support member 15 provided where the hammer thrust-up part 7b comes close when the key is depressed, a spring 10 energizing the jack 7 toward the engagement position, a regulating button 13 which turns the jack 7 toward the disengagement position against the energizing force of the spring 10 for disengagement from the hammer 3 when the key is depressed, and a spring part 7c which is provided to the hammer thrust-up part 7b and abuts against the support member 15 when the jack 7 is disengaged from the hammer 3 to energize the jack 7 toward the engagement position. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
