| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rotary drum device opening and closing a lid by normally and reversely rotating a rotary drum, simplifying a structure of a mechanism for driving and opening and closing the lid, capable of reducing the cost, and excellent in durability. <P>SOLUTION: A lid opening and closing member 18 is attached to the outward-opening type lid 11 opening and closing an opening 10 of the rotary drum 4, an annular closed lid holding rail 19 and a lid open and close guide 20 are arranged on outside positions of both ends of the rotary drum 4, and a switching part 21 is provided in the halfway of the closed lid holding rail 19 so that the lid opening and closing member 18 on the outside of the closed lid holding rail 19 is guided to the inner side of the closed lid holding rail 19 and the lid 11 is closed in normal rotation of the rotary drum 4 and the lid opening and closing member 18 is guided to the outer side of the closed lid holding rail 19 and the lid 11 is opened in reverse rotation of the rotary drum 4. <P>COPYRIGHT: (C)2012,JPO&INPIT |
