VACUUM CLEANER BAG AND VACUUM CLEANER

Abstract

A vacuum cleaner has a vacuum cleaner bag having two layers made of filter material, which are joined together on at least three sides to form an inner chamber. An inflow opening is formed on a fourth side between the two layers, at least in regions, into which a connector for connecting to a vacuum cleaner can be inserted.

Claims

1: A vacuum cleaner bag (1, 1′) having two layers (2, 2′, 20) made of filter material which are connected to one another at the edges on at least three sides (3, 5) in order to form an inner chamber, wherein an inflow opening (9) is formed at least in regions on a 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: The vacuum cleaner bag according to claim 1, wherein a hem is provided at the inflow opening (9) on the two layers (2, 2′, 20), into which a closure element and/or a spring element (10) is/are inserted.

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

4: The vacuum cleaner bag according to claim 2, wherein 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: The vacuum cleaner bag according to claim 1, wherein the inflow opening (9) extends completely over the length of the fourth side (4).

6: The vacuum cleaner bag according to claim 1, wherein the four sides of the vacuum cleaner bag comprise 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: The vacuum cleaner bag according to claim 6, wherein the longitudinal sides (5) are at least three times longer than the narrow sides (3, 4).

8: The vacuum cleaner bag according to claim 1, wherein a sealing layer, in particular made of a bulky nonwoven, is provided on an inside of the inflow opening (9).

9: The vacuum cleaner bag according to claim 1, wherein the filter material is made of a single-layer or multilayer nonwoven fabric.

10: The vacuum cleaner bag according to claim 1, wherein at least one hook-and-loop type fastener, profile fastener with two interlocking profiles, a snap fastener, a rivet, a magnet, a clamping strip, a pinch clip and/or an annular spring is provided for closing the inflow opening (9).

11: A vacuum cleaner comprising a driven fan and a substantially tubular chamber for accommodating a vacuum cleaner bag according to claim 1.

12: The vacuum cleaner according to claim 11, wherein the vacuum cleaner has a holding device which fixes the vacuum cleaner bag (1, 1′) in the region of the inflow opening (9).

13: The vacuum cleaner according to claim 11, wherein holding means in the form of grooves, slots, ribs, magnets and/or clamping elements are provided on a connector of the vacuum cleaner for fixing the vacuum cleaner bag (1, 1′).

14: The vacuum cleaner according to claim 11, wherein the connector, at least in the region of the inflow opening in an inserted position, is substantially oval in cross-section.

15: The vacuum cleaner according to claim 11, wherein the vacuum cleaner has a mechanical ejector that is configured for stripping the vacuum cleaner bag (1, 1′) from the connector.

Description

[0014] The invention is explained in more detail below by means of several exemplary embodiments with reference to the accompanying drawings, wherein:

[0015] FIGS. 1A and 1B show two views of a vacuum cleaner bag according to the invention;

[0016] FIG. 2 shows a sectional view through the vacuum cleaner bag of FIG. 1 during insertion of a connector;

[0017] FIG. 3 shows a sectional view through the vacuum cleaner bag of FIG. 2 with the connector inserted;

[0018] FIG. 4 shows a view of a modified vacuum cleaner bag before insertion of a connector,

[0019] FIG. 5 shows a view of a modified vacuum cleaner bag similar to FIG. 4 before insertion of a connector, and

[0020] FIG. 6 shows a sectional view through the connector in the region of the inflow opening.

[0021] A vacuum cleaner bag 1 comprises two layers 2 of filter material, in particular of a single-layer or multi-layer nonwoven fabric or a paper, wherein the layers 2 can be of congruent design. Seen from above, each layer 2 is rectangular in shape, with two opposing 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 as long.

[0022] The vacuum cleaner bag 1 is closed on three sides to form an inner space, wherein the two layers 2 of filter material are connected optionally by a folded edge or a connecting seam 6. The connecting seam 6 can be designed as a welded seam or adhesive seam. On the fourth side, the narrow side 4, an upper layer 2 and a lower layer 20 are not joined, so that an inflow opening 9 is formed between the two layers 2 and 20.

[0023] A hem 7 is formed on the narrow side 4 in the region of the inflow opening 9, which can be produced by folding over the filter material and fixing it with a seam 8. The hem 7 extends along the layer 2 and the layer 20 of filter material and forms a channel into which a closure element can be inserted. A spring element that pretensions the two layers 2 and 20 into a closed position can be provided as the closure element. For example, a metallic leaf spring can be used which has a kink in the region of one of the ends of a longitudinal side 5. Alternatively or additionally, another closure element, such as a rope or a clip made of plastic, can also be used.

[0024] In FIG. 2, the vacuum cleaner bag 1 is shown in section, and it can be seen that the layer 2 and the layer 20 surround an inner space in which dust can be collected. The inflow opening 9 is in a closed position in which the two layers 2 and 20 contact each other, as this is shown schematically. The closed position is held by a spring element 10, which is designed as a leaf spring that has a kink or bend of about 180° in the region of a longitudinal side 5. The spring element 10 is thereby held in the hem 7 at the inflow opening 9.

[0025] In order to place the vacuum cleaner bag 1 in a chamber of a vacuum cleaner, it is placed on a connector 11 which has, on its front side, one or more tips 12 which are insertable into the inflow opening 9.

[0026] 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, thus providing a seal. In addition, a sealing element can be provided on the layers 2 and 20 of filter material in the region of the inflow opening around the connector 11, for example a bulky nonwoven fabric, a strip of foam or of another elastic material.

[0027] When the vacuum cleaner bag 1 is filled with dust, it can be removed from the connector 11 manually or via a stripping 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.

[0028] FIG. 4 shows a modified vacuum cleaner bag 1′ which has an upper layer 2′ and a congruent lower layer which are joined together by a seam or folded edge on two longitudinal sides 5 and one narrow side 3′. A seam 40 is also provided on the further narrow side, extending over part of the length of the narrow side, for example between 20% to 80% of the length of the narrow side. An unconnected region of the layers 2′ on the fourth narrow side forms an inflow opening 9 into which a connector 11 of a vacuum cleaner can be inserted. The inflow opening 9 comprises a hem 7 at which a spring element 10 is arranged to pretension the inflow opening 9 into a sealed position, as explained in the exemplary embodiment of FIG. 1.

[0029] FIG. 5 shows a vacuum cleaner bag 1′ similar to FIG. 4, wherein the inflow opening 9 is arranged centrally on a narrow side and a seam 40 is provided on opposite sides of the inflow opening 9. An unconnected area of the layers 2′ on the narrow side forms the inflow opening 9, which is surrounded by a hem 7 with a spring element 10.

[0030] 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 hem 7. The connector 11 has a tubular channel 13 which is substantially oval in cross-section and has a greater extension in a longitudinal direction than perpendicular thereto. For this purpose, the connector 11 has two opposite wall sections 14 with a smaller radius of curvature than two tips 15, which are arranged adjacent to the connecting seams 6 on the longitudinal sides 5. This allows the vacuum cleaner bag 1 or 1′ to be better sealed in the region of the inflow opening 9.

[0031] In particular, the vacuum cleaner bag 1 can be inserted into a vacuum cleaner with an elongated housing shape, as known from battery-powered vacuum cleaners, also known as “cordless stick vacuums”.

LIST OF REFERENCE NUMERALS

[0032] 1, 1′ Vacuum cleaner bag [0033] 2, 2′ Layer [0034] 3, 3′ Narrow side [0035] 4 Narrow side [0036] 5 Longitudinal side [0037] 6 Connecting seam [0038] 7 Hem [0039] 8 Seam [0040] 9 Inflow opening [0041] 10 Spring element [0042] 11 Connector [0043] 12 Tip [0044] 13 Channel [0045] 14 Wall section [0046] 15 Tip [0047] 20 Layer [0048] 40 Seam