Importance

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Abstract

A keyboard device for a keyboard instrument, which is capable of obtaining excellent touch feeling when key depression is performed, and further is capable of increasing responsiveness when a key having been depressed performs pivotal return movement to its original position, and thereby obtaining appropriate string striking repeatability. The keyboard device includes a keyboard chassis, a key disposed on the keyboard chassis, and a hammer pivotally moved, below the key, in a manner interlocked with the key. The key is configured such that when depressed, it pivotally moves about a virtual pivot located rearward of a rear end of the key or about a pivot provided on the rear end of the key and pivotally supported on the keyboard chassis. The key is set such that the inertia moment of the key is larger than the inertia moment of the hammer.

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First Claim