| 摘要 |
PROBLEM TO BE SOLVED: To improve the closure, especially closure by spring energization, of a through opening in a filter bag.SOLUTION: A through opening 11 for sending dust to a dust bag within a vacuum cleaner is formed in a retaining plate 9 of a filter bag for the vacuum cleaner. The through opening 11 is closable by a spring-loaded closure part 12 in its closing position by means of a spring 16, and further a free end part region 18 of the spring 16 moves toward a pivot axis x of the closure part 12 during an opening of the closure part 12, viewed in a plan view of a closing plane. In order to further improve the filter bag of the type as for particularly the closure of the through opening by spring energization, the free end part region 18 formed as a plane part 19, in this case in any event, the peripheral pattern of the plane part or a peripheral edge of a plane formed by a pattern of a structural part of the spring 16, has an extension plane forming a right angle or an acute angle with the closing plane E, in a cross section along a closing surface perpendicular to the pivot axis x of the closure part 12. |
