Patent ID: 8258389

Claim:
A keyboard device comprising: a plurality of keys arranged in parallel to each other; a frame formed of resin in one united body, the frame being supported at an instrument main body and supporting the respective keys such that the respective keys are pivoted by key-pressing operation and key-releasing operation; a frame function part provided at the frame in one united body with the frame or as a separate body from the frame, the frame function part being configured to engage, in contact, with a component of the keyboard device excluding the frame during the use of the keyboard device; at least two integrated continuous parts comprising a part formed at the frame in one united body with the frame, the integrated continuous part extending continuously over a key zone including a plurality of keys in a first direction along which the keys are arranged side-by-side, the integrated continuous part receiving external force directly or via the frame function part and/or allowing a component constructed separately from the frame to mount on the integrated continuous part; and a connection rib formed at the frame in one united body with the frame such that the connection rib extends in a direction intersecting the first direction along which the keys are arranged side-by-side, each connection rib being provided per a plurality of keys, wherein the at least two integrated continuous parts are formed at positions deviated with respect to each other, when viewed from a side of the frame, in both a second direction along which the keys are pivoted by key-pressing operation and key-releasing operation and a third direction along which each key extends from front to rear of the keyboard device, the at least two integrated continuous parts being connected to each other only by the connection rib.