Patent ID: 7605319
Filing Date: 2009-10-20
Classification: G10C

Abstract:
1. A keyboard apparatus comprising: plural keys that extend in the longitudinal direction, and pivot in the vertical direction about a support by an operation of a key depression and an operation of a key release; plural electronic actuators that apply a reaction force against the operation of depressing the plural keys, each of the plural electronic actuators having a movable member that displaces in the vertical direction in interlocking with the pivot movement of each of the keys; and plural link mechanisms that link the plural keys and the movable members of the plural electronic actuators respectively, wherein each of the plural link mechanisms includes: a plate-like first fixing portion that is fixed to each of the keys, a plate-like second fixing portion that is connected to each of the movable members; and plural spherical fine grains filled in a gap between the first fixing portion and the second fixing portion.