FI67661B - FILTERKASSETT FOER DAMMSUGARE - Google Patents

Description

Ι · Λ§ * Τ * 1 ΓΒΊ m ADVERTISEMENT tn f, LA

• SspI? LBJ UTLÄGG Nl NGSSKRIFT OLOD I

• C (45) 'Γ' i '"' λ '(51) Kv.lk.4 / lnt.CI.4 AL 9 / 1i + FINLAND - FJ NLAND (21) Patent application - Patentansökning 7725 ^ 5 (22) Application date - Ansökningsdag 26 08 77 (Fh '' (23) Start date - Giltighetsdag 26.08.77 (41) Has become public - Blivit offentlig 28 02 78

National Board of Patents and Registration Date of display and hearing. -

Patent- och registerstyrelsen '' Ansökan utlagd och utl.skriften publicerad 31 .01 .85 (32) (33) (31) Pyydetty etuoikeus - Begärd priority 27.08.76

Federal Republic of Germany-Förbundsrepubliken Tyskland (DE) G 7626772.6 (71) Vorwerk δ Co. Interholding GmbH, MOhlenweg 17-27, 56 Wuppertal 2,

Federal Republic of Germany-Förbundsrepubliken Tyskland (DE) (72) Heinz Kaulig, Wuppertal, Gerhard Orth, Wuppertal, Oswald Gibiec,

Wuppertal, Wieland Giihne, Remscheid, Germany L i i ttotasava 1 ta-Förbundsrepubl i ken Tyskland (DE) (7 * 0 Oy Koister Ab (5 * 0 Vacuum cleaner filter cartridge - Fi1terkassett för dammsugare

The invention relates to a filter cartridge for a vacuum cleaner with an external filter, which cartridge consists of a fixed body which supports a filter bag made of fabric, which can be removed from the vacuum cleaner! from a fixed base, wherein the frame and the base are releasably attached to each other by resilient latches that engage the recesses. Such filter cartridges are known in the art for various applications. For example, cassette arrangements are known in which the lid is hinged and the paper filter bag is attached to this lid by means of a tube. In this case, a considerable disadvantage is that when the filled paper filter bag is removed by turning the lid and the small space requirement in the filtration space is strained in such a way that first the lid rotation and the weight of dust accumulated in the paper filter bag This would lead to contamination and unhygienic handling of the device, which should be prevented by such a device. In addition, cassettes are known in which the paper filter bag can be clamped against the shoulder by means of a lid. In addition, 2 67661 such cassettes are formed in one piece, i.e. the casing and the stand are formed in one piece. In this case, it is very detrimental that the paper filter bag cannot be removed in a hygienic manner due to the method of attachment. In addition, it is detrimental that in a structure in which the jacket and the base are formed in one piece, the fabric filter bag pulled over the jacket could be attached only with difficulty.

The object of the present invention is to attach the cloth-coated diaper and the base to each other in a simple manner, to facilitate the insertion and removal of the paper filter bag and to simplify the attachment to the vacuum cleaner.

This is achieved by a structure according to the invention, characterized in that the recesses are formed as holes below the edge of the cylindrical end of the body and the resilient latches are fitted to the base, the latches, in the gripping position, resting on the inner wall of the body, and the lid on the wall against its body has spacers with one or more lips that hold the flexible latches in the gripping position.

The spacers can advantageously be made of a flexible material, for example rubber.

An embodiment of the invention is described below.

In the drawings, Fig. 1 shows a vacuum cleaner with a filter cartridge, Fig. 2 shows an enlarged view of connecting the filter cartridge to the vacuum cleaner, Fig. 3 a longitudinal section of the filter cartridge with the paper filter bag inserted and Fig. 4 an enlarged section at right angles to Fig. 3.

Figure 1 shows a vacuum cleaner 14 supporting a nozzle part 25, a drive arm 26 and a filter cartridge.

The filter cartridge 27 is removably attached to the vacuum cleaner 14, as can be seen in the enlarged section of Figure 2. The filter cartridge 27 is placed on the vacuum cleaner 14 so that it rests on one side by means of a stand 5 on the rear surface of the collar 28 of the vacuum cleaner 14, and on the other side then a retaining hook 12 engages the rear surface of the shoulder 13 in the vacuum cleaner 14. A seal 29 is placed between the vacuum cleaner 14 and the filter cartridge 27 in the area of the tube 9, which, however, can only be seen in Fig. 3. The retaining hook 12 is the same piece as the base 30 part 30 and pressing on the retaining hook 12 removes the filter cartridge 27 from the vacuum cleaner 14.

Figure 3 shows a longitudinal section of the filter cartridge 27. It consists essentially of a fabric filter bag 18 illustrated by dotted lines, a fixed jacket or body 2, a stand 5, a lid 6 and a paper filter bag 31 attached thereto. 5, a lid 6 is placed, which supports the paper filter bag 31. The lid 6 is held by means of spacers 7 on a stand 5 (shown in Fig. 4). The outward sealing is provided by a seal 33 which seals the lid 6 and the base 5 and by a seal 29 which seals the tube 9. The tube 9 is formed in the lid 6 in such a way that it forms a hollow space which is filled with a sound-absorbing substance. In addition, it is formed so as to form an approximately circular arc 11 with the jacket line 10. In addition, the cover 6 has a handle 34 from which the cover 6 and with it the paper filter bag 31 can be pulled out of the jacket 2. The vacuum cleaner 14 is once again partially described and can be seen how the retaining hook 12 engages behind the shoulder 13.

Figure 4 once again in section shows the connection of the body 2, the fabric filter bag 18 and the stand 5. There are holes 3 at the end of the body 2. At the height of the holes 3 there are flexible projections 4 in the base 5. If the fabric filter bag 18 is now placed on the jacket 2 - it must not cover the holes on the inside - and both are pressed into the base 5 and the body 2 and the stand 5 are firmly connected to each other. In addition, pins 19 and 20 can be seen, which are located in the base 5 and the body 2 and which penetrate the fabric filter bag 18 and thus hold it. A fabric filter bag 18 is tightened between them. The lid 5 and with it the paper filter bag 31 can now be pressed into the base 5. A seal 33 is provided for sealing. To hold the lid 6 in the base 5, spacers 7 are arranged on the lid 6. The spacers 7 are arranged to hold the lid 6 closed. in the stand 5 and secondly to allow the cover 6 and the paper filter bag 31 to be jerked off due to friction between the spacers 7 and the stand 5. In order to better balance the reasonable tolerances and to adjust the friction values, the spacers 7 in Fig. 4 still have lips 16 which equalize all dimensional tolerances.