Patent ID: 8093480
Filing Date: 2012-01-10
Classification: G10H

Abstract:
1. A keyboard device for an electronic keyboard instrument provided with a let-off function of giving let-off feeling closely analogous to let-off feeling of an acoustic piano, comprising: a plurality of keys arranged side by side in a left-right direction such that each of said keys can perform pivotal motion, said key pivotally moving in opposite directions during key depression and during key release, respectively; a plurality of hammers each having an engaging part and provided for an associated one of said keys such that said hammer can perform pivotal motion, said hammer pivotally moving in accordance with pivotal motion of said key; an unmovable holder; and a plurality of let-off imparting members each formed of an elastic material and mounted to said holder for an associated one of said hammers such that said engaging part of said hammer can come into temporary engagement with said let-off imparting member during pivotal motion of said hammer caused by each of key depression and key release, said let-off imparting member imparting let-off feeling to touch feeling of said associated key during key depression, wherein each of said let-off imparting members extends from said holder toward a pivotal path along which said engaging part of said hammer pivotally moves, and is positioned such that said let-off imparting member is compressed during key depression and is deflected during key release, by engagement with said engaging part during pivotal motion of said hammer.