KEYBOARD DEVICE INCLUDING LINK MECHANISM
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United States of America
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Issued Date -
Mar 19, 2020
app pub date -
Sep 16, 2019
filing date -
Sep 16, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
A keyboard device having keys enabling sufficient weight of touch to be obtained in spite of being configured to be shorter in length than those of the grand piano and. Link mechanisms are each provided on a base for supporting an associated one of the keys from below and configured to cause the associated key to operate such that when a front end of the key is depressed, an amount of downward movement of a rear end of the key becomes approximately half of an amount of downward movement of the front end of the key. Each link mechanism includes front-side and rear-side key link bars and front-side and rear-side connecting link bars. The front-side and rear-side connecting link bars are pivotally supported, respectively, and are pivotally and slidably connected to each other via respective rear and front ends thereof.
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