JPH11332802A - Dust bag for vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dust bag for a vacuum cleaner, which has sufficient check valve function and excellent sealing performance, and can be mounted easily to a blowing cylinder of a vacuum cleaner body. SOLUTION: Upper pieces of right and left body parts of a bag body 1 made of permeable material are folded inward so as to face each other. Upper pieces of front and rear body parts, wherein front and rear flap pieces 7 and 8 which are formed between two slits from an upper edge are formed, are folded forward and back ward so as to face each other. The front and back flap pieces 7 and 8, and a part excluding a vicinity thereof are adhered to the right and left upper pieces so that an upper bottom is formed. And right and left flap pieces 10 and 11 are formed between two slits formed from opposite edges in non-adhered parts of the upper pieces of the front and rear body parts of the right and left upper pieces. A mouth paper 13, which is formed of a boxboard and has a blowing port 12 in the center so as to generally surround the front, rear, right and left flap pieces, is adhered to the upper bottom.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust bag to be mounted on a vacuum cleaner.

[0002]

2. Description of the Related Art As shown in FIGS. 5 to 7 of the accompanying drawings, a dust-collecting bag for a vacuum cleaner is provided on an upper bottom portion of a breathable bag body. A mouthpiece having a blowing hole to be attached to the dust blowing cylinder is affixed.

Further, the bag body is, for example, a rectangular cylindrical bag having a width of about 97 mm, a depth of about 80 mm, and a height of about 165 mm, the left and right body portions are folded inward, and the upper pieces of the left and right body portions face each other. The upper and lower body portions are also folded back and forth so as to face each other.

[0004] Each upper piece of the front and rear torso has a flap piece having a width of about 36 mm formed between two slits each having a length of 14.5 mm from the upper edge. The pieces are configured such that their free ends overlap by about 10 mm in the front-rear direction.

[0005] The front and rear flap pieces have the function of a check valve for preventing dust stored in the bag body from leaking. Therefore, the more overlapping portions, the more the function of the check valve can be achieved. . However, if there are many overlapping portions, the mounting resistance of the cleaner main body to the dust blowing cylinder portion becomes large, and thus mounting failure may occur.

Accordingly, the amount of protrusion of the flap pieces is reduced to reduce the overlapping portion. As a result, the check valve function is reduced, and the gap α between the bent upper and lower portions of the right and left body portions is also increased. However, there is a demerit that the sealing function after storing dust is not enough.

[0007]

[Object of the present invention] The present invention has a sufficient overlap between the front and rear flap pieces, has a sufficient check valve function, and can minimize the gap between the bent upper and lower parts of the right and left body parts, thereby closing. It is possible to provide a dust bag for an electric vacuum cleaner which is superior in performance to the conventional one and can be easily attached to the blow-in tube portion of the vacuum cleaner with a small resistance.

[0008]

In order to achieve the above-mentioned object, a dust bag for a vacuum cleaner according to the present invention has a fold folded inward in left and right body portions, and a bag made of a ventilation material having a lower portion closed. The upper pieces of the front and rear torso are bent inward so that the upper pieces of the right and left torso of the main body face each other, and the upper and lower pieces of the front and rear torso that form the front and rear flap pieces formed between the two slits from the upper edge are opposed to each other. It is folded back and forth, and the upper and lower flap pieces and the part excluding the vicinity thereof are bonded to the upper left and right pieces to form an upper bottom, and faces the non-adhered portions of the upper and lower body pieces in the left and right upper pieces. A left and right flap piece is formed between each two slits inserted from the edge, and on the upper bottom is a cardboard made of cardboard and having a blow hole in the center which substantially surrounds the front, rear, left and right flap pieces. It has a structure of sticking .

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS. In FIG. 2, reference numeral 1 indicates a bag body before the bottom is formed. The bag body is made of a two-layer paper including an outer bag 1a made of air-permeable paper, for example, Japanese paper, and an inner bag 1b made of non-woven paper having air permeability. Reference numeral 3 denotes a fold-in which is folded inward, and a lower side portion is formed by bending the front and rear body portions and appropriately forming a bottom by adhesion or the like to form a closed bottom.

In this embodiment, the bag body has a width of about 97 mm, a depth of about 80 mm, and a height of about 165 mm.
There is a square tube bag.

In the present invention, however, the front and rear trunks 4, 5
In addition to forming the front and rear flap pieces 7 and 8 by inserting two slits 6 and 6 each having a length of about 17.5 mm from the upper edge at an interval of about 36 mm into the upper piece part,
Each of the upper pieces of the right and left body parts 2 and 3 has a length of about 17.
Left and right flap pieces 10, 11 are formed by inserting two 5mm slits 9, 9 at intervals of about 28mm.

The upper pieces 2a, 3a of the left and right torso of the bag body having slits formed in the upper pieces are bent right and left so as to face each other as shown in FIG.
The upper pieces 4a, 5a are bent back and forth so as to face each other, and the portions other than the front and rear flap pieces 7, 8 and the vicinity thereof are bonded to the upper surfaces of the left and right upper pieces 2a, 3a to form an upper bottom. A cardboard mouth plate 13 having a blow hole 12 at the center is attached to the upper bottom to form a dust bag shown in FIG.

[0013]

In the bag of the present invention described above, the length of the front and rear slits 6, 6 for the front and rear flap pieces 7, 8 at the upper bottom is increased, so that each flap piece has a projection amount of about 17.
5mm is large and the amount of overlap in the front-rear direction is 16mm, so the front and rear flap pieces 7 and 8 can fully exhibit the check valve function, and the gap α between the left and right upper pieces can be reduced. The sealing action can be improved.

As described above, the front and rear flap pieces 7 and 8 are sufficiently overlapped with each other, but the flap pieces 10 and 11 with slits are also formed in the upper left and right portions, so that they are mounted on the vacuum cleaner. In this case, there is an advantage that the opening at the upper bottom is opened with a smaller resistance than when only the flap pieces at the front and rear having a sufficient overlapping amount are sufficient, so that it can be attached to the blower cylinder of the vacuum cleaner easily and accurately.

[Brief description of the drawings]

FIG. 1 is a perspective view of a dust bag for a vacuum cleaner according to the present invention.

FIG. 2 is a perspective view of a bag main body before forming an upper portion of the dust collecting bag.

FIG. 3 is a perspective view of the bag body in a state where upper left and right portions are bent.

FIG. 4 is a perspective view of the bag body in a state in which front and rear upper pieces are bent.

FIG. 5 is a perspective view of a conventional bag body for an electric vacuum cleaner before forming the bottom of the bag.

FIG. 6 is a perspective view of the bag body in a state where upper left and right portions of the dust bag are bent.

FIG. 7 is a perspective view of the bag main body in a state where upper and lower upper portions of the dust collecting bag are bent.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bag main body 1a Outer layer bag 1b Interior bag 2, 3 Left and right trunks 2a, 3a Upper and lower trunks 4, 5 Front and rear trunks 4a, 5a Upper and rear trunks 6a, 7 and 8 Front and rear trunks Flap piece 9 Slit 10, 11 Left and right flap pieces 12 Blow hole 13 Port plate

Claims (1)

[Claims] 1. A left and right torso having inwardly folded pleats,
Upper and lower torso having upper and lower body portions of the left and right body portions of the ventilated bag body whose lower part is closed are bent inward so as to face each other to form front and rear flap pieces formed between two slits from the upper edge. The upper part of the part is bent back and forth so as to face each other, and the upper and lower flap pieces and the parts other than the vicinity thereof are adhered to the left and right upper pieces to form an upper bottom,
In addition, left and right flap pieces are formed between two slits respectively inserted from opposing edges in a non-adhered portion of the front and rear body upper pieces in the left and right upper pieces, and are made of cardboard on the upper bottom, Further, a dust collecting bag for an electric vacuum cleaner, wherein a mouth paper having a blowing hole substantially surrounding the front, rear, left and right flap pieces is attached at the center.