Importance

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Abstract

A keyboard device for a keyboard instrument, which is capable of realizing the same operation of an action as performed by that of a grand piano and enables to obtain the same key touch feeling and performability as provided by the grand piano during musical performance. The keyboard device includes a swingable key, an action unit operating in conjunction with depression of the key, and a hammer pivotally supported on a hammer support shaft of a hammer support and placed on the action unit via a hammer protrusion. The action unit includes a holder fixed to a rear end of the key, a repetition lever and a jack pivotally mounted to the holder, jack latching means for disengaging a hammer push-up portion of the jack from the hammer protrusion, and jack returning means for returning the hammer push-up portion to its position before disengagement.

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First Claim