| 摘要 |
<p>PROBLEM TO BE SOLVED: To hold a fingertip at an accurate position, and push a key with accurate strength, and improve a performance characteristic by installing a rubber sheet on a push-key surface of a key in the key swingably supported with a key support member. SOLUTION: A key 10 is composed of a key main body 11 fabricated by a resin or wood and a rubber sheet 12 installed on a push-key surface 11a of this key main body 11. The key 10 is swingably supported with a key support member. In the rubber sheet 12, a thickness is preferable to be set to 10 to several hundredμfor practical use. When it is thinner than 10μ, an effect is not fulfilled, and when it is thicker than several hundredμ, a smooth movement of a finger is checked, and a performance is hindered. Since useless power must be added, an evil influence such as a player easily gets tired and a touch feeling is bad is exerted. By this constitution, a finger hardly slips on the key 10 of a keyed instrument, and a movement of a fingertip can be stopped at an accurate position, and since the key can be pushed with accurate strength, a performance characteristic can be improved.</p> |
