Patent ID: 7709717

Claim:
A structure for an electronic keyboard instrument which comprises a lower case having a bottom plate for mounting thereon a keyboard unit and an upper case having an upper plate covering the lower case, said structure further comprising: a first holding section provided on the bottom plate of said lower case and having a lower slit formed therein, the lower slit having an upward opening; a second holding section provided on the upper plate of said upper case and having an upper slit formed therein, the upper slit having a downward opening; and a circuit board with an upper edge portion and a lower edge portion, said circuit board disposed upright between said upper case and said lower case; wherein, as the upper and lower cases are mounted together, the circuit board is mounted to the upper and lower cases such that said circuit board is fixed in place by being inserted at the upper and lower edge portions thereof in the upper slit and lower slit, respectively; and wherein the insertion of the upper edge portion of the circuit board into the upper slit is independent of the insertion of the lower edge portion of the circuit board into the lower slit.