JPH1043100A - Dust collecting bag for vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter, i.e., dust collecting bag which can be manufactured in a simple method from a single material and form an opening for the entrance sleeve of a vacuum cleaner by suitable folding operations. SOLUTION: A collecting bag is formed of a flat tubular workpiece made of air-permeable material and provided with two opposed folds 16 folded inwards in the direction of diameter. The surfaces of the workpiece with the folds 16 are flattened, and each part of the surface on the left and right sides of the folds 19 are folded down by an angle of 180 deg. and fixed on the outside surfaces of the workpiece. Thereby an opening 14 for guiding air laden with dusts into the dust collecting bag is formed between the folds 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust-collecting bag for a vacuum cleaner consisting of a flat tubular workpiece formed of an air-permeable material having two diametrically opposed folds folded inward.

[0002]

2. Description of the Prior Art Dust bags of the above type are known, the inlet opening of which is usually covered with cardboard or plastic plates. The plate of the inlet opening rests on a seat in the cleaner and has a central opening. A rubber sealing film having an opening is usually fitted or covered in the central opening. When closing the cover that covers the inside of the dust bag, the inlet sleeve of the vacuum cleaner is inserted into the dust bag through the sealing film.

[0003] Dust collection bags of the above type usually perform satisfactorily, but are relatively cumbersome to manufacture and therefore expensive for the consumer. Therefore, there is a need for an inexpensive dust bag that is easy to manufacture.

[0004]

SUMMARY OF THE INVENTION The object of the present invention is to provide a filter, i.e. a dust bag, which can be manufactured in a simple manner from a single material and which, by means of a suitable folding operation, forms an opening for the inlet sleeve of the vacuum cleaner. Is to provide.

[0005]

According to the present invention, the dust bag is formed from a flat tubular workpiece of an air-permeable material. The workpiece is diametrically opposed 2
With two folds. The workpiece is flattened to the same plane as the surface having the fold. The end of this work piece is approximately 180 ° at each of the left and right sides of the fold.
It is folded. Each end folded in this way is fixed to the outside of the work piece, thereby forming an opening between the folds for guiding the accumulated air to the dust bag.

The depth of the fold when the dust bag is flattened is preferably substantially the same as the length of the folded end. The opening formed between the folds is at a first end of the dust bag, a second end facing the first end is closed, and the second end is formed of a plurality of layers. preferable.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings. In the attached drawings, the dust bag is the front side 1
0a, and the rear side 10b, including the folded intermediate part 11, 2
It consists of a bottom part which forms the main part of the surface consisting of the above layers, and a front part 13 which is reinforced and has an inlet opening 14.
The dust bag is formed of an air-permeable material, preferably a porous paper.

The dust bag is formed from a flat tubular piece 15 having two opposing intermediate portions 11 folded inward. The fold is shown at 16 (FIG. 2).
(A)-(c)). One end of the work piece 15 forms a bottom layer 12 consisting of a plurality of layers folded in a conventional manner, while the other end, as described below with reference to FIGS.
Folds to form a reinforced front 13 having an inlet opening 14.

In this case, first, the work piece 15 is
Fold along line (A) as indicated by the dotted line in (a). In FIG. 2B, the portion 17 of the workpiece surface on the left side from the fold 16 is folded to the left, while the fold 1
6. Fold the part 18 of the workpiece surface located to the right of 6 to the right. After folding at 90 °, parts 17 and 18 are shown in FIG.
When positioned as shown in (a)-(c), the outside of the folded intermediate portion 11 forms a triangular area 19. The parts 17, 18 and the triangular area 19 cooperate to form an intermediate hole serving as the opening 14. Therefore, the parts 17, 18 are further folded 90 ° to the positions shown in FIGS. 4A to 4C, and fixed to both sides 10a, 10b of the workpiece, preferably by an adhesive.

The depth (D) at which the portions 17, 18 are folded is substantially the same as the length (L) of the folded edge region.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a dust bag according to the present invention.

FIGS. 2A to 2C are a top view, a side elevation view, and an end view of a part of a work piece of a dust bag, respectively.

FIGS. 3A to 3C are a top view, a side elevation view, and an end view, respectively, of a part of the work piece of the dust bag after the first folding operation.

FIGS. 4A to 4C are a top view, a side elevation view, and an end view of a part of the completed dust bag, respectively.

[Explanation of symbols]

 15 Workpiece 10a Front 10b Rear 11 Middle folded part 12 Bottom (second end) 13 Front part (first end) 16 Crease 17, 18 Part 19 Triangular area

Claims (3)

[Claims] 1. An inwardly folded, diametrically opposed 2
It consists of a flat tubular workpiece of an air-permeable material having two folds (16), said workpiece being flattened to the same plane with said folds, the ends (17, 18) of said workpiece being An opening (14) is formed between the folds (16), which is folded about 180 ° on each of the left and right sides of the fold and fixed to the outside of the work piece, thereby guiding the accumulated air to the dust bag. A dust bag for a vacuum cleaner, comprising: 2. The depth (D) of the fold (16) when the dust collecting bag is flattened is determined by the folded end portion (17, 1).
8) The dust bag according to claim 1, which is substantially the same length as the length (L). 3. An opening (14) at a first end of the dust bag and a second end (1) opposite the first end.
2. Dust bag according to claim 1, wherein 2) is closed and said second end (12) comprises a plurality of layers.