发明名称 |
HAMMER DEVICE AND KEYBOARD DEVICE FOR ELECTRONIC KEYBOARD INSTRUMENT |
摘要 |
A hammer device of an electronic piano with keys which swing in accordance with key depression, includes a hammer support that is made of a synthetic resin and has a fulcrum shaft, and a hammer having a shaft hole part for being fitted on the fulcrum shaft and configured to pivotally move about the fulcrum shaft in a manner interlocked with the swinging key. The fulcrum shaft has an outer peripheral surface formed by a pair of arcuately-curved surface portions opposite to each other and a pair of planar surface portions each extending between the pair of arcuately-curved surface portions and parallel to each other.
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申请公布号 |
US2013152769(A1) |
申请公布日期 |
2013.06.20 |
申请号 |
US201213689404 |
申请日期 |
2012.11.29 |
申请人 |
KABUSHIKI KAISHA KAWAI GAKKI SEISAKUSHO;KABUSHIKI KAISHA KAWAI GAKKI SEISAKUSHO |
发明人 |
SUZUKI AKIHIRO;ISHIDA HIDEYUKI |
分类号 |
G10C3/18 |
主分类号 |
G10C3/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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