| 摘要 |
<p>PURPOSE:To provide the keyboard device which can be manufactured at low cost by fitting keys directly to a case as an assemble of nearly one octave not across a keyboard chassis. CONSTITUTION:Common fitting parts 11b, 12b, and 13b of key groups of nearly one octave when mounted from a case opening part are energized by elastic tongues 15i to case fitting-in parts 15c and 15d, the case opening part is reinforced with connecting ribs 15j at gaps where the key groups adjoin to each other, and lock claws for holding only the key groups completely and lock claws which enable the key groups to be fitted to even the keyboard chassis are provided to reduce the manufacture man-hours and improve the operability.</p> |
