阅读说明：本技术 真空吸尘器袋以及真空吸尘器 (Vacuum cleaner bag and vacuum cleaner ) 是由 W·察多 G·尚德尔 于 2020-02-04 设计创作，主要内容包括：本发明涉及一种真空吸尘器袋(1、1’),包括由过滤材料制成的两个层(2、2’、20),所述两个层在至少三侧(3、5)上联结在一起以形成内部腔室,其中,流入开口(9)形成在所述两个层(2、2’、20)之间的第四侧(4)上,至少在区域中,连接器(11)可以插入所述流入开口(9)中以连接到真空吸尘器。本发明进一步涉及一种具有这种真空吸尘器袋的真空吸尘器。(The invention relates to a vacuum cleaner bag (1, 1 ') comprising two layers (2, 2 ', 20) of filter material joined together on at least three sides (3, 5) to form an inner chamber, wherein an inflow opening (9) is formed on a fourth side (4) between the two layers (2, 2 ', 20), in which inflow opening (9) a connector (11) can be inserted, at least in regions, for connection to a vacuum cleaner. The invention further relates to a vacuum cleaner having such a vacuum cleaner bag.)

1. A vacuum cleaner bag (1, 1 ') having two layers (2, 2 ', 20) of filter material, which are interconnected at the edges on at least three sides (3, 5) to form an inner chamber, characterized in that an inflow opening (9) is formed at least in the area on the fourth side (4) between the two layers (2, 2 ', 20), into which inflow opening (9) a connector (11) can be inserted for connection to a vacuum cleaner.

2. Vacuum cleaner bag according to claim 1, wherein a bead is provided at the inflow opening (9) on the two layers (2, 2', 20), into which bead a closing element and/or a spring element (10) is inserted.

3. Vacuum cleaner bag according to claim 1 or 2, wherein a spring element (10) is provided at the inflow opening (9), which spring element (10) pretensions the two layers (2, 2', 20) into a closed position.

4. Vacuum cleaner bag according to claim 2 or 3, characterized in that the spring element (10) is designed as a leaf spring which is bent through approximately 180 ° at the edge of the inflow opening (9).

5. Vacuum cleaner bag according to one of the preceding claims, wherein the inflow opening (9) extends completely over the length of the fourth side (4).

6. Vacuum cleaner bag according to one of the preceding claims, wherein the vacuum cleaner bag (1, 1') has two longitudinal sides (5) and two narrow sides (3, 4), as seen in plan view, and the inflow opening (9) is provided on one of the narrow sides (4).

7. Vacuum cleaner bag according to claim 6, wherein the length of the longitudinal side (5) is three times the length of the narrow side (3, 4).

8. Vacuum cleaner bag according to one of the preceding claims, wherein a sealing layer, in particular made of a bulky nonwoven, is provided on the interior of the inflow opening (9).

9. Vacuum cleaner bag according to one of the preceding claims, wherein the filter material is made of a single or multiple layers of non-woven fabric.

10. Vacuum cleaner bag according to one of the preceding claims, wherein at least one hook and loop fastener, profile fastener with two interlocking profiles, snap fastener, rivet, magnet, clamping strap, clip and/or ring spring is provided for closing the inflow opening (9).

11. A vacuum cleaner comprising a driving fan and a substantially tubular chamber for accommodating a vacuum cleaner bag according to one of the preceding claims.

12. Vacuum cleaner according to claim 11, characterized in that the vacuum cleaner has a holding device which secures the vacuum cleaner bag (1, 1') in the region of the inflow opening (9).

13. Vacuum cleaner according to claim 11 or 12, characterized in that holding means in the form of grooves, slots, ribs, magnets and/or clamping elements are provided on the connector of the vacuum cleaner for fixing the vacuum cleaner bag (1, 1').

14. Vacuum cleaner according to one of the claims 11-13, characterized in that the connector, at least in the area of the inflow opening in the inserted position, has a substantially oval cross-section.

15. Vacuum cleaner according to one of the claims 11 to 14, characterized in that the vacuum cleaner has a mechanical ejector by means of which the vacuum cleaner bag (1, 1') can be peeled off from the connector.

Technical Field

The present invention relates to a vacuum cleaner bag having two layers of filter material joined together at edges on at least three sides, and to a vacuum cleaner.

Background

EP 1915939B 1 discloses a filter bag for a vacuum cleaner, which is designed as a flat bag and in which two layers of filter material are welded together at the edges. In one of the layers, an inflow opening is punched out, on which a vacuum cleaner bag is arranged for releasable fixation in a vacuum cleaner. When inflated, the vacuum cleaner bag has a mat shape, which is why the vacuum cleaner bag is not well suited for small vacuum cleaners, such as cordless stick vacuums, despite the good filtering properties.

DE 102017209154 a1 discloses a hand-held vacuum cleaner having a separator operating on the principle of centrifugal force. Such a separator is only suitable for separating coarse particles and only produces optical cleanliness since smaller particles are not retained. Despite these disadvantages, vacuum cleaners are available on the market which have only a low suction power and a low separation efficiency for smaller particles, but which have a particularly compact design due to the use of a small battery-powered suction unit. Such a floor vacuum cleaner is described, for example, in DE 102016105475 a 1.

Disclosure of Invention

It is therefore an object of the present invention to create a vacuum cleaner bag which is also suitable for a compact design of a vacuum cleaner and which improves the separation performance of such a vacuum cleaner.

This object is solved with a vacuum cleaner bag having the features of claim 1 and with a vacuum cleaner having such a vacuum cleaner bag according to the features of claim 11.

In the vacuum cleaner bag according to the invention, the two layers of filter material are joined together at the edges on at least three sides. The connection may optionally be made by folding the edges or by a connecting seam, such as an adhesive or welded seam. The interior space formed in this way is accessible through an inflow opening which is formed at least in some areas on the fourth side between the two layers, so that a connector can be inserted for connection to the vacuum cleaner. Thus, either no connecting seam at all can be provided on the fourth side, or the seam is provided only over a part of the length of the fourth side and the other part is not connected and forms an inflow opening. This allows the vacuum cleaner bag to be better adapted to the elongated, compact chamber in the vacuum cleaner. In addition, the vacuum cleaner bag is easy to manufacture, since punching of the inflow opening in one of the two layers of filter material and attaching the retaining plate is omitted.

Preferably, the closing element and/or the spring element are arranged at the inflow opening. The closing element or the spring element can be arranged on a bead which is formed on both layers at the inflow opening. The spring element can pretension the two layers into the closed position in order to close the inflow opening by the spring element after the vacuum cleaner bag is pulled out of the connector. Instead of or in addition to the spring element, a cord or a tensioning element can also be provided as a closure element, by means of which the inflow opening can be closed after being pulled out of the connector of the vacuum cleaner. In addition, hook and loop fasteners, profile fasteners with two interlocking profiles, snap fasteners, rivets, magnets or clamping strips can be used as closure elements. In addition, self-closing closures, such as known from aluminium foil bags, may also be used. A clip or a ring spring can also be used as a closing element.

Preferably, the spring element provided at the inflow opening of the vacuum cleaner bag is designed as a leaf spring. The leaf spring may have a kink at one end of the inflow opening, in particular a bend of approximately 180 °. This allows the single spring element to pretension the inflow opening into the closed position. The leaf spring may be captively arranged in a hem of the vacuum cleaner bag.

For an optimized design of the shape of the vacuum cleaner bag, the inflow opening may extend completely over the length on the fourth side. This enables the formation of a rather elongated vacuum cleaner bag having two longitudinal sides and two narrow sides, seen from above, wherein the inflow opening is provided on one narrow side. The longitudinal side may have a length which is at least three times, preferably at least 4 times, the length of the narrow side. Thus, the surrounding chamber of the vacuum cleaner may also be substantially tubular or hose-shaped.

In order to improve the sealing in the region of the inflow opening, the filter material may have a sealing layer, for example a bulky nonwoven or a tape of an elastic material (such as foam), on the inside of the inflow opening. The vacuum cleaner bag can be manufactured by the way from a nonwoven material, in particular a single-layer or multi-layer nonwoven material.

The vacuum cleaner bag is preferably inserted into a chamber of a vacuum cleaner with a driven fan, in particular a battery powered vacuum cleaner. The vacuum cleaner can have a holding device which fixes the vacuum cleaner in the region of the inflow opening. In a vacuum cleaner, a vacuum cleaner bag is attached to a connector with an inflow opening. Retaining means, such as grooves, slots, ribs, magnets or clamping elements, may be provided on the connector for better fixation.

The cross-section of the connector of the vacuum cleaner for attaching the vacuum cleaner bag preferably has a profile deviating from a circular shape. The cross-sectional shape may be substantially oval, wherein the two ends on the narrow sides of the oval may also be pointed in order to optimize the seal between the connector and the vacuum cleaner bag.

Preferably, a mechanical sprayer is provided on the vacuum cleaner by means of which the vacuum cleaner bag can be peeled off from the connector on the vacuum cleaner. This allows the vacuum cleaner bag to be ejected at the opening of the chamber without the user having to touch it. Alternatively, the vacuum cleaner bag may be manually removed from the connector and disposed of.

Drawings

The invention is explained in more detail below by means of several exemplary embodiments with reference to the drawings, in which:

figures 1A and 1B show two views of a vacuum cleaner bag according to the invention;

figure 2 shows a cross-sectional view through the vacuum cleaner bag of figure 1 during insertion of the connector;

FIG. 3 shows a cross-sectional view through the vacuum cleaner bag of FIG. 2 with a connector inserted;

figure 4 shows a view of a modified vacuum cleaner bag before insertion of the connector,

figure 5 shows a view similar to figure 4 of a modified vacuum cleaner bag before insertion of the connector, an

Fig. 6 shows a sectional view through the connector in the region of the inflow opening.

Detailed Description

The vacuum cleaner bag 1 comprises two layers 2 of filter material, in particular a single-layer or multi-layer nonwoven fabric or paper, wherein the layers 2 may have an congruent design. Each layer 2 is, seen from above, rectangular in shape, having two opposite narrow sides 3 and 4 and two longitudinal sides 5. The length of the longitudinal sides 5 is significantly longer than the length of the narrow sides 3 and 4, preferably at least three times longer.

The vacuum cleaner bag 1 is closed on three sides to form an inner space, wherein the two layers 2 of filter material are optionally connected by a folded edge or a connecting seam 6. The connecting seam 6 can be designed as a welded seam or as an adhesive seam. On the fourth side, the narrow side 4, the upper layer 2 and the lower layer 20 are not joined, so that an inflow opening 9 is formed between the two layers 2 and 20.

A bead 7 is formed on the narrow side 4 in the region of the inflow opening 9, which bead 7 can be produced by folding the filter material and fixing it with a seam 8. The bead 7 extends along the layers 2 and 20 of filter material and forms a channel into which a closure element can be inserted. A spring element pre-tensioning the two layers 2 and 20 into the closed position can be provided as a closing element. For example, a metal leaf spring can be used, which can have a kink in the region of one of the ends of the longitudinal sides 5. Alternatively or additionally, another closing element, such as a cord or a clip made of plastic, may also be used.

In fig. 2, the vacuum cleaner bag 1 is shown in cross-section and it can be seen that the layers 2 and 20 enclose an inner space in which dust can collect. The inflow opening 9 is in a closed position, as schematically shown, in which the two layers 2 and 20 are in contact with each other. The closed position is maintained by a spring element 10, which is designed as a leaf spring having a kink or bend of approximately 180 ° in the region of the longitudinal sides 5. The spring element 10 is thus held in the bead 7 at the inflow opening 9.

In order to place the vacuum cleaner bag 1 in the chamber of the vacuum cleaner, it is placed on a connector 11 having one or more tips 12 on its front side which can be inserted into the inflow opening 9.

In fig. 3, the vacuum cleaner bag 1 is shown with the connector 11 inserted, wherein the layers 2 and 20 of the vacuum cleaner bag rest against the connector 11. The spring element 10 presses the layers 2 and 20 against the connector 11, thereby providing a seal. In addition, sealing elements may be provided on the layers 2 and 20 of filter material, for example a bulky nonwoven fabric, a foam or a strip of another elastic material, in the region of the inflow opening around the connector 11.

When the vacuum cleaner bag 1 is full of dust, it can be removed from the connector 11 manually or by a peeling device, wherein the spring element 10 ensures automatic closure when the vacuum cleaner bag is removed. The vacuum cleaner bag 1 can then be disposed of.

Fig. 4 shows a modified vacuum cleaner bag 1 ', which modified vacuum cleaner bag 1' has an upper layer 2 'and a congruent lower layer, which layers are joined together by means of a slit or folded edge on both longitudinal sides 5 and one narrow side 3'. The slit 40 is also provided on the other narrow side, extending over a portion of the length of the narrow side, for example between 20% and 80% of the length of the narrow side. The unconnected area of the layer 2' on the fourth narrow side forms an inflow opening 9, into which inflow opening 9 a connector 11 of the vacuum cleaner can be inserted. The inflow opening 9 comprises a bead 7, at which bead 7 a spring element 10 is provided to pretension the inflow opening 9 into a sealing position, as explained in the exemplary embodiment of fig. 1.

Fig. 5 shows a vacuum cleaner bag 1' similar to fig. 4, wherein the inflow openings 9 are arranged centrally on the narrow side and slits 40 are arranged on the opposite side of the inflow openings 9. The unconnected areas of the layer 2' on the narrow side form an inflow opening 9, which inflow opening 9 is surrounded by the bead 7 with the spring element 10.

Fig. 6 shows a sectional view through the connector 11 in the region of the inflow opening 9, but without the spring element 10 and the crimp 7. The connector 11 has a tubular passage 13, which tubular passage 13 has a substantially oval cross-section and a larger extension in the longitudinal direction than the direction perpendicular thereto. For this purpose, the connector 11 has two opposite wall sections 14 with a radius of curvature smaller than two tips 15 which are arranged adjacent to the connecting seam 6 of the longitudinal sides 5. This allows the vacuum cleaner bag 1 or 1' to be better sealed in the area of the inflow opening 9.

In particular, the vacuum cleaner bag 1 can be inserted into a vacuum cleaner having the shape of an elongated housing, as is known from battery-powered vacuum cleaners (also known as "cordless stick vacuum cleaners").

List of reference numerals:

1. 1' vacuum cleaner bag

2. 2' layer

3. 3' stenosing side

4 narrow side

5 longitudinal side

6 connecting seam

7 crimping

8 seam

9 inflow opening

10 spring element

11 connector

12 tip

13 channel

14 wall segment

15 tip

20 layers of

And (4) sewing 40.