| 摘要 |
PURPOSE:To enable a dust case to be folded when it becomes unnecessary so as to save room by housing the sack part thereof inside a cover. CONSTITUTION:An under cover 10 has an overhang part 10a, a dust sack storing open hole 11, and a set of opposing pins 12 and 13 provided at on both sides of the hole 11. A foldable dust sack 14 consists of a sack part 15 which can be hung on/off from the open hole 11, a finisher 18 provided at the bottom part 16 of said sack 15 and engaged with the open hole 11 to close it, and hooks 22 which are provided on the rod 20 of the opening 19 of the sack part 19 and can be engaged with the pins 12 and 13. The sack part 15 is made of cloth or the similar material and can be folded at a foldable part 23, on the side area.
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