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1. (WO2018016324) KEYBOARD DEVICE

Pub. No.:    WO/2018/016324    International Application No.:    PCT/JP2017/024721
Publication Date: Fri Jan 26 00:59:59 CET 2018 International Filing Date: Thu Jul 06 01:59:59 CEST 2017
IPC: G10B 3/12
G10H 1/34
Applicants: YAMAHA CORPORATION
ヤマハ株式会社
Inventors: OGAWA, Kento
小川 賢人
OSUGA, Ichiro
大須賀 一郎
Title: KEYBOARD DEVICE
Abstract:
The present invention makes the touch sensation of an electronic keyboard-type musical instrument more similar to that of an acoustic piano, while ensuring the greatest possible amount of design freedom when introducing a mechanism for obtaining the touch sensation. To this end, a keyboard device is characterized by being equipped with: keys arranged so as to be capable of rotating relative to a frame; a hammer assembly positioned so as to be capable of rotating in response to the rotation of the keys; a first member; a second member which slides along the first member when the hammer assembly rotates in response to the rotation of the keys, is positioned so as to move on the first member, is provided with a first curved surface, the cross-section of which forms a first arc on the first member side thereof, is provided with a second curved surface, the cross-section of which forms a second arc on the side thereof opposite the first member, and is configured in a manner such that the centers of the first and second arcs are identical and the radii thereof are different; and a third member which is connected to the first member and guides the second member so as not to separate from the first member by more than a prescribed distance.