Patent ID: 9040807
Filing Date: 2015-05-26
Classification: G10H

Abstract:
1. A keyboard apparatus for an electronic musical instrument, the keyboard apparatus comprising: a plurality of keys composed of a white key and a black key, each key pivoting about a corresponding pivot axis so that a front end of the key can move up and down, and a plurality of reaction force generation members which are provided for the plurality of keys, respectively, and each of which is depressed by a depression of a corresponding key to generate a reaction force against the depression of the corresponding key, wherein each of the reaction force generation members is made of an elastic body to be shaped like a dome, and is configured to be elastically deformed by being depressed in an axis line direction to increase the reaction force from a beginning with an increasing amount of elastic deformation to buckle after a peak of the reaction force to reduce the reaction force; and the plurality of reaction force generation members are arranged such that the axis line direction of the reaction force generation members is varied between the white key and the black key so that a direction in which each of the reaction force generation members is depressed at the peak of the reaction force is close to the axis line direction of the reaction force generation member.