SE522489C2 - Vacuum cleaner modification method, by removing panel from bag and gluing separately provided coupling part to panel - Google Patents

Abstract

A replacement panel (7) for the filter bag (8) is installed by removing the bag from the vacuum cleaner (1), removing the panel from the bag, and then gluing a first coupling part to the panel. This first coupling part is provided as a separate component and is releasably connected to a second coupling part integrated into the bag. The vacuum cleaner has an air flow channel extending through a holder (6) for a panel, which is provided with an opening and is secured to a disposible filter bag. A replacement panel provided with the vacuum cleaner can fit into the holder and has its downstream side provided with a first coupling part extending around the plate opening.

Description

25 30 35 n q. . .a 522 489 2 A consumer who owns a vacuum cleaner and has a bag / device belonging to the vacuum cleaner comprising an actual bag and a disc attached thereto, can tear the bag off the disc. On one side of the cardboard disc, which in the vacuum cleaner is to be the downstream side of the disc, he now permanently mounts a standardized first coupling part. Furthermore, stores provide a new type of vacuum cleaner bags, comprising a standardized bag provided with a second coupling part which is standardized and adapted to the first coupling part to allow easy and quick coupling / uncoupling of such bags to the disc, wherein at one of the coupling parts is suitably provided with sealing means which seal the coupling against leakage in the coupling joint.

The first coupling part can be provided as a separate detail in the shops which sell the standardized bag or bags and can be accompanied by a strong glue, strong double-sided adhesive tape or the like to allow a consumer to permanently supply the disc with the first coupling part so that this does not, or very rarely needs to be replaced or reassembled. Of course, as an alternative, components can be provided which are adapted to the various types of vacuum cleaner / models available on the market and include a first coupling part which is integrated with a disc corresponding to the mounting disc of the original vacuum cleaner bag. The coupling can be of the type initially discussed, but can also be made as, for example, screw joints, bayonet joints, joints, snaps, etc.

The invention will be described in the following in an exemplary form with reference to the accompanying drawing.

Fig. 1 schematically shows an axial section through a vacuum cleaner modified in accordance with the invention.

Fig. 2 shows the portion marked A with Fig. 1 and illustrates a releasable connection between a bag and a disc in the vacuum cleaner. Fig. 3 shows a plan view of the disc provided with a first coupling part.

Fig. 4 shows a view taken along IV-IV in Fig. 3.

Fig. 5 shows an end view of a vacuum cleaner bag with a second coupling part.

Fig. 6 is a section taken along VI-VI in Fig. 5 and shows the engagement between the coupling parts of the disc and the bag.

Fig. 7 shows in a view corresponding to Fig. 6, an alternative embodiment in which the coupling device consists of a bayonet joint.

Fig. 8 shows a sectional view taken along line VII in Fig. 7.

Fig. 9 automatically shows a coupling device in the form of a threaded connection between the first and the second coupling part.

Fig. 10 shows a coupling device in the form of an axial snap connection.

Fig. 1 shows a vacuum cleaner 1 containing an suction connection 2 to which a vacuum cleaner hose can be connected.

Inside the housing of the vacuum cleaner 1 there is a shielding disc 7 which around its circumference is tightly received in a socket 6, and which has an air passage opening. A filter bag 8 has its mouth connected to the disc 7 around the central air passage opening. The bag is placed in a space delimited by the disc 7 and a perforated disc 27. At the outlet end of the vacuum cleaner there is a fan chamber with a fan 29. An air flow 28 flows through the vacuum cleaner and through the bag 8.

As can be seen from Fig. 2, the disc 7 has at its downstream end a first coupling device 18 around its passage opening 71.

The bag 8 has around its inlet opening and 81 a second coupling 10 15 20 25 30 35 5 2 2 4 8 9 4 å? - - Üïï Part 17. Parts 17 and 18 are designed to provide a simple and tight coupling device 9.

In an embodiment shown in more detail in Figs. 2-6, the coupling part 18 may comprise an annular flange which is directed radially outwards, at a distance from the surface of the disc 7. The bag 8 may have a corresponding U-shaped guide 17 which allows the flange 18 to be laterally inserted into the socket 17. The established coupling, as depicted in a section taken along VI-VI in Fig. 5, may include a sealing ring 16 lying on the inside of the flange 18 around its circumference, to seal against a sealing surface 19 which is parallel to the end surface of the bag and surrounds the opening 8 of the bag. Alternatively, a sealing ring 16 may be placed between other adjacent surfaces and about the parts 17, 18, as schematically illustrated in Fig. 2. .

As can be seen from Fig. 6, the annular flanges 171, 181 of the parts are arranged to cooperate with each other in order to stably and tightly retain the bag and its part 17 at the coupling part 18 of the disc 7.

The part 18 is shown glued with an adhesive layer 5 to the disc 7 around its opening 71. The part 17 can be attached to the bag 8 by injection molding or by means of an adhesive layer 5. It can be seen that the radially inner ends 55 of the parts 17, 18 are located so as not to restrict the air flow through the openings 71, 81.

Figures 7 and 8 illustrate that the coupling parts may be designed to form a bayonet joint. In Figs. 7 and 8, the disc 7 is shown to have radially inwardly directed annular flange portions spaced apart from each other in the circumferential direction, while the bag has radially outwardly directed edge portions which engage behind the radially inwardly directed flange portions of the disc in a selected rotational position between the portions. The bayonet joint can be opened by a predetermined relative rotation between the bag 8 and the disc 7. As can be seen from Fig. 7, an annular seal 16 'can be placed around the second coupling part and its circumference, in order to come into contact with the disc 7 around its opening 71. when the bayonet joint is established. 10 15 ~ ø o v en 5 2 2 4 s 9 5 §ïï = - - -.:š Fig. 9 shows that the parts 17, 18 are connected via a threaded connection 27.

Fig. 10 shows that the part 17 has a radially inverted nose 172 which elastically snaps over the radially outer edge of the flange 181 of the part 18 to axially hold the parts 17, 18 with a selected axial force limit which on the one hand prevents the air flow through the vacuum cleaner to separate the parts. on the one hand, it allows simple manual establishment of the connection through axial force application.

In Fig. 7, for example, the coupling part 18 is shown to have a flange 181 which is angled radially outwards and shows the part 17 to have a radially inwardly angled flange 171, but the arrangement can of course be changed if desired.

Claims (7)

10 15 20 25 30 35 522 489 6 “PATENT REQUIREMENTS A method for modifying a vacuum cleaner, wherein the vacuum cleaner has an air flow duct which extends through a holder (6) for a disc (7) adapted to the vacuum cleaner and provided with an opening (71), which is fixedly mounted on a filter bag. (8) of disposable type, which via the opening (71) of the disc receives the air flow of the vacuum cleaner and separates dust and debris therefrom, the vacuum cleaner being provided with a replacement disc (7, 18), which fits into the holder and which is provided on its downstream side with a first coupling part (18), which provides the opening of the replacement disc, wherein the first (18) second coupling part is arranged to releasably cooperate with a (17) disposable type, characterized in that the coupling part which is integrated in a uniform vacuum cleaner bag (8) is manufactured the replacement disc (7, 18) for the vacuum cleaner by removing the bag of the device from a bag device adapted for the vacuum cleaner, that the first coupling part is provided separately, and that on the from the bag released from the disc (7) glues the first coupling part (18). Method according to claim 1, characterized in that one (18) of the coupling parts (17, 18) has a sealing device (16) which sealingly connects to the other coupling part. Method according to claim 2, characterized in that the sealing device comprises means which establish a tight connection between the disc (7) and the bag (8) in their interconnected state. Method according to one of Claims 1 to 3, characterized in that the coupling parts are designed for establishing a manually releasable axial snap coupling. Method according to one of Claims 1 to 3, characterized in that a bayonet coupling or a screw coupling surrounding the opening of the disc is present in the coupling parts (17, 18). 10 522 4897 Method according to one of Claims 1 to 3, characterized in that the coupling part of the bag comprises a radially outwardly directed flange around at least a part of the opening of the bag, and in that the disc has a corresponding coupling part. Method according to one of Claims 1 to 3, characterized in that the coupling part of the bag comprises a radially inwardly directed flange around at least a part of the opening of the bag, and in that the disc has a corresponding coupling part.