Unit consisting of a device for holding a vacuum cleaner bag in a vacuum cleaner and a vacuum cleaner bag mounted in the device

Abstract

A unit comprising a device (10) for holding a vacuum cleaner bag (1) in a vacuum cleaner and a vacuum cleaner bag (1) mounted in the device (10), wherein the vacuum cleaner bag (1) has a bag formed from filter material (2) and a retaining plate (5) fixed to the filter material (2) with an inlet opening (7), and the device (10) has a support surface (14) for the retaining plates (5) of the vacuum cleaner bag (1) and a pivotable retaining element (12) which is pivotable between an open position for inserting the retaining plate (5) and a closed position, and in the closed position the retaining plate (5) is arranged partially between the support surface (14) and the retaining element (12),wherein the pivotable retaining element (12) comprises several teeth (17) on one side facing the support surface (14) and at least one of the teeth (17) can be inserted into a receptacle (13) between two lateral projections (9) on the retaining plate (5), such that the teeth (17) of the locking element hold the retaining plate (5) in a predetermined position in the closed position of the retaining element (12), characterized in that the retaining plate (5) is made of cardboard and that, in the closed position of the retaining element (12), at least one projection (9) on the retaining plate (5) is clamped between two teeth (17) on the retaining element (12).

Description

[0001] The present invention relates to a unit comprising a device for holding a vacuum cleaner bag in a vacuum cleaner and a vacuum cleaner bag mounted in the device, wherein the vacuum cleaner bag has a bag formed from filter material and a retaining plate fixed to the filter material with an inlet opening, and the device has a support surface for the retaining plates of the vacuum cleaner bag and a pivotable retaining element which is pivotable between an open position for inserting the retaining plate and a closed position, and in the closed position the retaining plate is arranged partially between the support surface and the retaining element, wherein the pivotable retaining element comprises several teeth on a side facing the support surface and at least one of the teeth can be inserted into a receptacle between two lateral projections on the retaining plate.so that the teeth of the locking element, in the closed position of the retaining element, hold the retaining plate in a predetermined position.

[0002] EP 4 767 295 B1 discloses a device for holding a vacuum cleaner filter bag in a vacuum cleaner and a retaining plate for a vacuum cleaner filter bag. The retaining plate comprises, on opposite sides, a key section with several projecting projections, between which receptacles are formed. A toothed engagement element engages in these receptacles and is provided on a pivotable locking element of the device for holding the vacuum cleaner filter bag. This allows the retaining plate to be positioned precisely on the device. Furthermore, the pivotable locking element has locking hooks on opposite sides, which engage with a locking hook bearing section of the retaining plate. Therefore, the retaining plate must be relatively robust in the area of ​​the locking hook bearing section in order to withstand the holding forces caused by the locking action.In practice, the retaining plate is therefore manufactured as an injection-molded plastic part to ensure a secure locking mechanism on the latch. However, vacuum cleaner bags are disposable items that must be discarded after a single use. Manufacturing sturdy plastic retaining plates using injection molding thus results in high resource consumption and is environmentally disadvantageous. Furthermore, the CO2 footprint of producing such retaining plates is considerable.

[0003] It is therefore an object of the present invention to create a unit consisting of a device for holding a vacuum cleaner bag in a vacuum cleaner and a vacuum cleaner bag mounted in the device, which establishes an efficient and environmentally friendly connection between the holding plate of the vacuum cleaner bag and the device.

[0004] This problem is solved with a unit having the features of claim 1.

[0005] The inventive unit, comprising a device for holding a vacuum cleaner, a vacuum cleaner, and a vacuum cleaner bag mounted in the device, includes a vacuum cleaner bag with a bag formed from filter material and a retaining plate fixed to the filter material with an inlet opening. The filter material can, for example, be made of a multi-layered nonwoven fabric. The device for holding a vacuum cleaner bag, which is known per se, comprises a support surface for the retaining plate of the vacuum cleaner bag and a pivotable retaining element that can be pivoted between an open position for inserting the retaining plate and a closed position, wherein in the closed position the retaining plate is arranged partially between the support surface and the retaining element.The pivotable retaining element comprises several teeth on one side facing the support surface, and at least one of these teeth can be inserted into a recess between two projections on the retaining plate. In the closed position of the retaining element, the teeth hold the retaining plate in a predetermined position. The retaining plate is made of cardboard, and in the closed position of the retaining element, at least one projection on the retaining plate is clamped between two teeth on the retaining element. The pivotable retaining element thus allows the retaining plate to be easily mounted on the device. In the closed position, at least one projection of the retaining plate is clamped between two teeth of the retaining element, creating a mutual locking mechanism that prevents the retaining plate from being removed and the retaining element from being moved in an open position.The malleability of the cardboard is used to provide a secure clamping effect. These mechanical advantages are combined with ecological benefits, as a cardboard retaining plate has a significantly better environmental footprint than an injection-molded plastic retaining plate, which is particularly important for disposable items such as vacuum cleaner bags.

[0006] Preferably, a wedge-shaped, outwardly expanding recess is formed between the two teeth on the retaining element, into which the projection on the retaining plate engages. The term "outwardly expanding" refers to the axis of rotation of the retaining element, and the recess between the two teeth expands outwards in a radial direction. This allows the projection to enter the wedge-shaped, tapered section between the two teeth during a closing movement and be clamped there.

[0007] The distance between the two teeth on the retaining element is preferably smaller than the distance between the opposite edges of the projection in the unmounted position, which then engages with the teeth and is compressed in the closed position.

[0008] In a further embodiment, the retaining element is pre-tensioned into the open position by a spring, and the retaining element is held in the closed position by the clamping fixation of the projections on the teeth of the retaining element.

[0009] For easy installation, the retaining plate can be slid along the contact surface when closing the retaining element from the open to the closed position. This ensures precise positioning and easy installation of the projections. The retaining element can be designed as a U-shaped bracket with teeth on opposite sides, against which a projection on the retaining plate is clamped. This results in optimized alignment of the retaining plate.

[0010] To minimize the material used in the production of the mounting plate, its thickness is preferably less than 2 mm. The basis weight of the cardboard used to manufacture the mounting plate can, for example, be between 250 g / m². 2 up to 600 g / m² 2 be.

[0011] To ensure a reliable seal inside the vacuum cleaner bag, an elastic sealing ring, for example made of rubber, can be fixed around the inlet opening on the mounting plate. Alternatively, a ring-shaped section of the filter material can protrude into the inlet opening of the mounting plate to form a sealing ring.

[0012] The mounting plate preferably has a relatively small surface area of ​​less than 90 cm². 2 , whereby the inlet opening and any sealing ring are included in the area calculation. This allows the retaining plate to be manufactured with a low weight, for example between 2 g and 6 g.

[0013] The invention is explained in more detail below with reference to an exemplary embodiment and the accompanying drawings. These show: Fig. 1 a view of a unit consisting of a device for holding a vacuum cleaner bag with the vacuum cleaner bag; Fig. 2 a detailed view of the vacuum cleaner bag without the device; Fig. 3 a perspective view of a device for holding a vacuum cleaner bag without a vacuum cleaner bag, and Fig. 4 a view of the device of Fig. 3 during the installation of a mounting plate.

[0014] A vacuum cleaner bag 1 comprises an air-permeable filter material 2, in particular made of a multi-layered non-woven fabric, with a carrier layer, at least one capacity layer, at least one fine filter layer and optionally further layers. The filter material 2 is in Fig. 2 formed by two flat blanks which are joined together in the area of ​​the outer circumference by an inner weld 3 and an outer weld 4. The vacuum cleaner bag 1 can also be designed as a block bottom bag or filter bag with one or more side folds instead of as a flat bag.

[0015] A retaining plate 5, made of cardboard and glued to the filter material 2, is fixed to the vacuum cleaner bag 1. An elastic sealing ring 6 is provided in the retaining plate 5, surrounding an inlet opening 7 to an interior of the vacuum cleaner bag 1. The retaining plate 5 is fixed to a device 10 for holding the vacuum cleaner bag 1 in a vacuum cleaner, the device 10 comprising a housing 11 and a retaining element 12 rotatably mounted on the housing 11. The retaining element 12 is U-shaped in plan view and surrounds the inlet opening 7 on the retaining plate 5.

[0016] In Fig. Figure 2 shows the vacuum cleaner bag 1 with the retaining plate 5 in detail. The cardboard retaining plate 5 has a front edge 8 which, when mounted on the device 10, is located at the front in the insertion direction. Adjacent to the front edge 8, lateral, protruding, rib-like projections 9 are formed on opposite sides, between which recessed receptacles 13 are arranged. In the illustrated embodiment, three projections 9 are provided on each side, although a different number of projections 9 can also be provided, in particular two or four projections 9, but at least one projection 9 is provided. The retaining plate 5 is slightly wider in a central section around the inlet opening 7 than in the area opposite the front edge 8.The cardboard mounting plate can be less than 2 mm thick, in particular between 1.4 mm and 1.8 mm, to achieve a low weight, for example between 2 g and 6 g. The surface area of ​​the mounting plate is preferably less than 90 cm². 2 , where the basis weight of the cardboard is between 250 g / m² 2 up to 600 g / m² 2 amounts.

[0017] In Fig. Figure 3 shows the device 10 for holding a vacuum cleaner bag 1 in an open position of the retaining element 12. A support surface 14 is formed on the housing 11 on opposite sides of a recess 15, in which a connection area between the retaining plate 5 and the filter material 2 is arranged. The retaining element 12 is rotatable about an axis on the housing 11 and pivotable between an open position and a closed position. The retaining element 12 is designed as a U-shaped bracket and comprises several teeth 17 on opposite sides in the area of ​​the support surface 14, between each of which a receptacle 18 is formed. The receptacle 18 spreads outwards with respect to the axis of rotation of the retaining element 12. The teeth 17 protrude from a wall section 16 that runs perpendicular to the axis of rotation.

[0018] The retaining element 12 is pre-tensioned into an open position by a spring (not shown), so that the device 10 is ready by the spring for the installation of a retaining plate 5 of an empty vacuum cleaner bag 1.

[0019] In Fig.Figure 4 shows the mounting of the retaining plate 5 on a vacuum cleaner bag 1. The retaining plate 5 is placed on the support surface 14 of the housing 11 and moved towards the teeth 17 on the retaining element 12 until the projection 9 located on the front edge 8 abuts one of the teeth 17 of the retaining element 12. Then, either the retaining plate 5 can be moved further to pivot the retaining element 12 into a closed position, or the retaining element 12 can be rotated to pull the retaining plate 5 further in the insertion direction, with the teeth 17 engaging in a receptacle 13 between two projections 9. This movement ends when the retaining element 12 is in the closed position. In this position, at least one projection 9 on the retaining plate 5 is clamped between two teeth 17 on the retaining element 12.In the illustrated embodiment, a projection 9 is clamped between two teeth 17 on opposite sides, so that on the one hand the retaining plate 5 is positioned exactly and on the other hand the retaining element 12 is held in the closed position by the clamping and the vacuum cleaner is now ready for operation.

[0020] A closing element can optionally be provided on the retaining plate 5 to close the inlet opening 7 after use of the vacuum cleaner bag 1. Such a closing element can, for example, be integrally formed with the retaining plate 5 or as an additional element that can cover the inlet opening 7 by sliding or pivoting. Reference symbol list 1 vacuum cleaner bag 2 Filter material 3 weld seam 4 weld seam 5 Mounting plate 6 sealing ring 7 Inlet opening 8 Front edge 9 lead 10 Device 11 cases 12 retaining elements 13th entry 14 contact surfaces 15 recess 16 wall section 17 teeth 18 recording QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] EP 4 767 295 B1

[0002]

Claims

A unit comprising a device (10) for holding a vacuum cleaner bag (1) in a vacuum cleaner and a vacuum cleaner bag (1) mounted in the device (10), wherein the vacuum cleaner bag (1) has a bag formed from filter material (2) and a retaining plate (5) fixed to the filter material (2) with an inlet opening (7), and the device (10) has a support surface (14) for the retaining plates (5) of the vacuum cleaner bag (1) and a pivotable retaining element (12) which is pivotable between an open position for inserting the retaining plate (5) and a closed position, and in the closed position the retaining plate (5) is arranged partially between the support surface (14) and the retaining element (12),wherein the pivotable retaining element (12) comprises several teeth (17) on one side facing the support surface (14) and at least one of the teeth (17) can be inserted into a receptacle (13) between two lateral projections (9) on the retaining plate (5), such that the teeth (17) of the locking element hold the retaining plate (5) in a predetermined position in the closed position of the retaining element (12), characterized in that the retaining plate (5) is made of cardboard and that, in the closed position of the retaining element (12), at least one projection (9) on the retaining plate (5) is clamped between two teeth (17) on the retaining element (12). Unit according to claim 1, characterized in that a wedge-shaped outwardly expanding receptacle (18) is formed between the two teeth (17), into which the at least one projection (9) is inserted. Unit according to claim 1 or 2, characterized in that the distance between the two teeth (17) on the retaining element (12) is smaller than the distance between the opposite edges of the projection (9) in the unmounted position, which then engages with the teeth (17) in the closed position. Unit according to one of the preceding claims, characterized in that the retaining element (12) is biased into the open position by a spring and the retaining element (12) is held in the closed position by the clamping fixation of the at least one projection (9) on the teeth (17) of the retaining element (12). Unit according to one of the preceding claims, characterized in that when the retaining element (12) is closed, the retaining plate (5) is moved along the support surface (14). Unit according to one of the preceding claims, characterized in that the retaining element (12) is designed as a U-shaped bracket and teeth (17) are provided on opposite sides for engagement in receptacles (13) between two projections (9) of the retaining plate (5). Unit according to one of the preceding claims, characterized in that the thickness of the retaining plate (5) is less than 2 mm. Unit according to one of the preceding claims, characterized in that the cardboard of the retaining plate (5) has a basis weight between 250 g / m2 to 600 g / m2. Unit according to one of the preceding claims, characterized in that an elastic sealing ring (6) is fixed around the inlet opening (7) on the retaining plate (5) or the filter material protrudes in a ring shape into the inlet opening (7) of the retaining plate (5). Unit according to one of the preceding claims, characterized in that the retaining plate (5) with the inlet opening (7) has an area of ​​less than 90 cm2, in particular between 60 cm2 to 88 cm2. Unit according to one of the preceding claims, characterized in that the weight of the retaining plate (5) is between 2 g and 6 g.

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