| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a piano hammer for selectively obtaining high performance properties and a large hitting force according to a key, by preferentially obtaining the key control property or the transmission efficiency of key pressing energy according to the key. <P>SOLUTION: Each of a plurality of hammers 2 has a hammer shank 11 turnably supported by a fulcrum 14; a shank roller 13 knocked up by a jack 6 in response to key pressing; and a hammer head 12 for hitting a gut S, accompanying the turning of the hammer shank 11 by the knock of the jack 6. The plurality of hammers 2 have a plurality of first hammers 2A, where the lever ratio RL between the length LH from the fulcrum 14 up to the hammer head 12 and the length LR from the fulcrum 14 to the shank roller 13 is set to a first predetermined value, and a plurality of second hammers 2B, where the lever ratio RL is set to a second predetermined value that differs from the first predetermined value. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
