Patent ID: 9449586
Filing Date: 2016-09-20
CPC Classification: G10C,G10H

Claim Text:
1. A keyboard device, comprising: a plurality of key units each comprising (i) a plurality of white keys or a plurality of black keys and (ii) a coupler elongated so as to extend in a key arrangement direction in which the plurality of white keys or the plurality of black keys are arranged, rear ends of the plurality of white keys or the plurality of black keys being coupled to the coupler, the plurality of white keys or the plurality of black keys and the coupler being coupled in one unit; and a key frame supporting a plurality of couplers of the plurality of key units, the plurality of couplers being stacked on each other, the plurality of key units being assembled to the key frame, the coupler of one key unit of the plurality of key units being provided with a hook extending in an up and down direction, the hook comprising an engaging portion at an end portion of the hook, the hook being configured to fit within a length of the coupler of the one key unit, the plurality of key units comprising at least one other key unit other than the one key unit, the coupler of each of the at least one other key unit comprising a through hole formed through the coupler in the up and down direction at a position corresponding to the hook, the key frame comprising a through hole formed through the key frame in the up and down direction at a position corresponding to the hook, the plurality of couplers of the plurality of key units being secured on the key frame using the engaging portion in a state in which the hook extends through the through hole of the coupler of each of the at least one other key unit and the through hole of the key frame.