| 摘要 |
<p>The invention provides an operation panel. The panel body (8) of the operation panel is provided with an open portion (8a), the open portion (8a) is used for arranging a rotatable operation button which can stop at a plurality of selection positions, and the periphery of the open portion (8a) is provided with annular display plates (12 to 14). The operation panel is characterized in that the inner peripherial edges and outer peripherial edges of the annular display plates (12 to 14) of the annular display plates (12 to 14) are respectively bended towards the back sides of the display plates to form bending protions (12b to 14b) and (12c to 14c), the panel body (8) is provided with a cylindrical maintaining portion (8A) for maintaining the bending portions (12b to 14b) and (12c to 14c) of the display plates (12 to 14), a plurality of first welding ribs (23) at predetermined intervals are formed at the circurference direction of each side wall at the inner periphery and outer periphery of the maintaining portion (8A), and the first welding ribs (23) are connected with the bending portions (12b to 14b) and (12c to 14c) of the display plates (12 to 14) by ultrasonic welding.</p> |
