| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electronic keyboard instrument capable of downsizing the size in the depth direction of the instrument and appropriately closing a keyboard lid from any of half-opened and fully opened positions. <P>SOLUTION: A keyboard lid 1 comprises a front lid part 10, a rear lid part 20 and a connection pair 30 for connecting the both lid parts. A guide groove 50 extended in a back and forth direction is provided in a side board 5, and the guide groove 50 comprises: the first guide part 51 located in the front side; the second guide part 52 extended backward from a branch point 55 of the rear end of the first guide part; and the third guide part 53 extended backward from the branch point 55 in the lower side of the second guide part. In both side ends of the front lid part and the rear lid part, supporting parts 11, 12, 21 and 22 are provided, and the supporting parts 21 and 22 of the rear lid part are moved to the second guide part 52 and the supporting parts 11 and 12 of the front lid part are moved to the third guide part 53 when the keyboard lid is opened, and when the keyboard lid is closed, the front lid part and the rear lid part are fitted in the positions along the first guide part in accordance with the movements of the supporting parts. <P>COPYRIGHT: (C)2008,JPO&INPIT |
