| 摘要 |
<P>PROBLEM TO BE SOLVED: To house a percussion instrument easily and compactly by enabling drum boards to be folded to a main board. <P>SOLUTION: A bus drum board 12 is arranged inside a frame part 13 of the main board 10. The drum boards 20A to 20D are coupled to 1st turning mechanism parts 21A to 21D so as to be freely turnable in the vertical direction through arms 25A to 25D, respectively, so that each free end part position can be displaced. The drum boards 20E, 20F are coupled to 2nd turning mechanism parts 22E, 22F through arms 25E, 25F so as to be freely turnable in the facial direction of the main board 10. Thus, the arms 25A to 25F are made to be freely spreadable/foldable to the main board 10 through the arms 25A to 25F, and each of the drum boards is configured so that the disposition state is variable to a spread disposition suitable for performance and to a folding disposition suitable for housing. <P>COPYRIGHT: (C)2008,JPO&INPIT |
