| 摘要 |
PURPOSE:To display the contact switching state with a simple structure and make the display by a rotary display body from the outside easy to observe. CONSTITUTION:A piano key switch is provided with a piano key handle 43 pressing a push button handle 32 fitted at the upper section of a push button switch 5 via a piano key touch action, a display window 110 on the piano key handle 43, and a rotary display body 70 having a circular arc or circular cross sectional shape of the outer face rotatably on the push button switch 5. The rotary display body 70 is rotated interlockingly with the rotation of a reversing handle 31, and part of the rotary display body 70 is displayed from the display window 110 to display the contact switching. |
