| 摘要 |
PROBLEM TO BE SOLVED: To decrease the man-hours required for a surface treatment by constituting the panel of an electronic keyboard instrument of two members which are divided into front and rear members. SOLUTION: A cover 13 made of a sheet metal covering electronic circuits, etc., is attached to the electronic keyboard instrument and leg parts 21 which position the panel 2 by coming into contact with the outer peripheral surface of the cover 13 are formed on the inner peripheral surfaces of the front panel 2F and the rear panel 2B. These leg parts 21 have a U shape in cross-sectional shape and are formed continuously in the lateral direction on account of extrusion molding. Nut members are driven and are integrally fixed to the rear surface at the rear end of the front panel 2F. On the other hand, the front end of the rear panel 2B is penetrated with fitting holes and when the rear end is superposed on the front end, the nut members are fitted into these fitting holes. The projection heights of the nut members is set slightly shorter than the thickness at the front end and screws are screwed into the nut members in the state of inserting the nut members into the fitting holes, by which the front panel 2F and the rear panel 2B are securely fastened to each other. |
