DE2130222A1 - Dust bag for vacuum cleaner - Google Patents

Description

Patent attorneys Dipl.-Ing. W. Boyor

- Dipl.-Wirtsch.-Ing. B.Jochom

Frankfurt am Main Freiherr-vora-Stein-Str 18

2110222

In terms of: * ■ -. , · ■ '«

Aktiebolaget Electrolux Stockholm / Sweden Lux baking 1

Dust collection bags for vacuum cleaners

The invention relates to a disposable self-sealing dust bag for vacuum cleaners, in particular with a mounting plate which has an opening and an elastic membrane for inserting a Hohrelementes for introducing dusty air into the loading container.

Disposable dust on f angb out el for vacuum cleaners usually consist of a paper bag and a cover, for example made of cardboard with a hole in which a tubular element can be inserted to allow dust-containing air to flow into the paper bag . The hole can be provided with a seal which closes automatically when the tubular element is removed from the paper

129o / 16.6.1971 ''

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bag is removed, Such seals are referred to as "self-sealing".

Such self-sealing probes dust collection bags are provided with a provided with an elastic membrane that extends over an opening, which calibrated in a stiff Ab:; c! ilussplntte, die for example made of cardboard is located. A narrow one A strip or tongue is attached to the end plate and lies over a central part of the Ilembrsn and covers a located therein from the hole, which is smaller than the opening in the end plate. The tongue or the strip is made up usually in one piece and its opposite ends are diametrically opposed to the end plate The peripheral edges of the opening are completely connected. A tubular element for introducing dusty Air in the dust container is designed in such a way that it can be pushed through the opening in the end plate can, the tubular element stretching the membrane "And" that, enlarged hole in it.

It is already known to have a narrow strip or tongue to use the one at one end in the area which is with the end plate on the circumference of the opening completely connected, a weaker zone on v / eist. When the tubular element is pushed through the opening in the end plate it separates the tongue and cuts it off at the weaker point at one end, and creates such a single finger that extends completely over its widest part over the opening. Because of the The force exerted by the tubular element is pushed through the opening in the membrane and by the individual finger Level of the end plate tilted inwards. If that

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tubular element pulled out of the end plate and no more force is exerted on the pincer, so the eleastischo membrane tensions the pincer in the direction the plane of the plate and covers the hole in the membrane.

It is also already known sealing plates for dust collection bags to be used in which two parts can be moved around a fold line between two positions, whereby they are themselves in one position in the same plane and in the other position at right angles to this plane and at the same time lie against each other. End plates of this type have the advantage on that folded paper bags could be conveniently attached when the end panels are folded. Through this lets rieh an automatic production of the Gtaubnuffp.ng bags perform, thereby lowering the manufacturing cost.

End plates which do not have two parts movable about a split line; and using a tongue which consists of a single finger which extends completely over the opening in the plate cannot be used with folded paper bags of the type mentioned, which is particularly disadvantageous. This is because when such an end panel has been cut to create a fold line which splits the end panel opening into two parts and the two parts of the panel have been folded together, the single finger extending across the fold line , would be damaged, whereby its self-sealing property would be impaired.

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The present invention is therefore based on the object of a self-sealing dust collection bag for a vacuum cleaner to propose which can be produced inexpensively and which is produced in an automatic production facility can, and which is almost airtight when the tubular element for introducing the dusty air out withdrawn from the inlet of the end plate of the dust collector will.

The solution to these problems takes place in that a disposable self-sealing dust collection bag for Vacuum cleaner with a mounting plate, which can be used a pipe element for the introduction of dusty air has an opening and an elastic membrane in the container, which extends over the opening and one of the opening has associated smaller hole, with a tongue attached to the plate extending over the hole and the over the part of the tongue reaching the hole, relative to the normal to the longitudinal axis of the tongue, at least as wide as the extent of the hole, is proposed, where at least part of the tongue that extends across the hole has a diagonal cut along a line, which forms an acute angle with the longitudinal axis of the tongue.

According to the invention, two pingers are thus formed, the overlapping outer pointed ends on v / iron, which are able to move through the hole and which are due to the force exerted on it by the tubular element Tilt the force inwards from the plane of the plate. When the tubular element is withdrawn from the air inlet will j be dis fingers through the elastic membrane in Stretched towards the plane of the plate, and close the hole in the membrane,

^E1I129 ° 109852 / U08 "^

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Another object on which the invention is based is to propose a dust collection bag, the end plate of which consists of two parts which can be moved around a fold line between two positions, being in one position in the same plane and in the in another position at right angles to the plane. According to the invention, the diagonally extending incision in the tongue represents such a fold line. The plate has two separately arranged slots on such a fold line to receive lugs at the open end of the paper bag which protrusions in the folded end walls can formed when the folds are compressed and held together. The side walls of the bag have notched areas at the open end of the bag which are located between the lugs and which, in a manner known per se, connect with the inner sides of the two. Parts of the end plate are attached to ground when these parts butt against each other and the notched areas are therebetween. If the two parts of the end cover are brought into the same plane, the notched zones on the flat sides of the bag and the end cover with the inner side of which these zones are attached form the closed end of the dust collection bag, the notches in the opposite side walls form an opening which are aligned with the inlet in the end cover. Since the fingers, which are formed by the tongue, face one another and their outer free parts end at the fold line around which the two parts of the end plate can move against each other, the fingers cannot be destroyed or damaged when the parts the end panel can be pivoted around the fold line.

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The invention is based on the drawing, in which an embodiment is shown, explained in more detail. Here show:

Figure 1 is a side view, which is partially broken away, of a vacuum cleaner with a schematically illustrated v / disposable dust collection bag according to the invention;

Figure 2 is an enlarged side view of the schoma-

txGch illustrated wegv / erfbriren Stnubouffrn ^ container;

™ Pigur 3 a closed perspective view some components of the one shown in FIG disposable dust collection bags;

Figure 4- the end plate of the one shown in Figures 2 and 3 Dust collection bag for the two lying on top of each other e discs are unfolded;

FIG. 5 is a plan view of a thin elastic membrane provided with a hole and lying between the panes of the end plate shown in FIGS. 2, 3 and 4;

Figure 6 is a side view of the end plate shown in Figures 2 and 3 with the superimposed panes, - 'whereby the opposite half tenT .. of the end plate around a fold line between a normal one shown in a solid line. Position in which they lie in ä.cr same ISbcne "in a dashed line position. are movable ₉ in which they lie against each other at right angles to the normal position;

Figure 7 © inen section along the line 7-7 of Figure 6 wherein _S is the opposite halves of the waste

El ι 129o 109852 / UOS "-? -" '

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cchluG plate on the dust collector container vertically "hang down and lie aneiiir.noer and

FIG. 5 is a perspective, partially broken away view in section of one shown in FIGS Dust catchment container, the tubular element at Lurteinlaßende the vacuum cleaner according to Figure 1 through the hole in the end plate of the storage bin extends.

In Figure 1, the invention is shown in connection with a horizontally lying vacuum cleaner 1o, which has a housing 11, a front cover Λ7: and a rear cover Λ ¹¹ -uiiweis. The housing 11 is provided with a handle 15 and wheels 16 and 17 in order to facilitate the handling of the same, the individual wheel 1o being arranged centrally on the front part of the housing and being fastened around a vertical axis swivel as a steering wheel and uia a horizontal axis rotates.

The front end cover 12 is mated with the housing Detachably attached manner and provided with an inlet opening 18 through which the stub-containing air into the housing flows. A dust collecting container 19 is in the housing 11 arranged next to the front cover plate 12 and serves to separate the dirt from the air.

The air flow through the housing is made by a heater and caused by a fan unit 2o, which consists of a There is a centrifugal fan 21 which is arranged at one end of an electric motor 22 and inside the housing 11

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■ '* ■. ⁸ · "- ■ 2Τ3034 - * - · -

at 23 in suitable wines spring-loaded int. Dae blower 21 receives the air flowing through the stub tray 19 has flowed through it and which is essentially free of dust and dirt is. The air is expelled by the fan through the rotor 22 and finally flows through the outlet opening 24, which is located in the rear end cover. The motor 22 is designed such that it is in any suitable way by a switch 25, the is located on the upper part of the housing 11, can be operated.

The dust container 19 has a bag 26 and an end plate 27. As can be seen from Figures ^, 5 and 6, the end plate 27 is made of a stamped piece 28, which consists of a suitable disc-shaped material, for example cardboard, which is generally stiff and yet flexible to a certain extent. As can be seen from FIGS. M and 6, the punched piece 28 is divided by a notch 31 into two connected disks 29 and 3o. When the two disks 29 and 30 are folded along the notch 31, these disks form superposed layers which constitute the end plate 27. The end plate according to the invention can, however, also advantageously consist of a single layer of material.

Between the disks 29 and 3o there is a relatively thin one elastic membrane 32 made of a rubber elastic material, for example rubber, and which is provided with a hole .33. The membrane 32 extends over an air inlet 3 ^ s of the through the opening restrictions 29a and 3oa in the disks 29 and correspondingly 3o is formed, the Openings 29a and 3oa larger than the hole 33 in the membrane

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is. The plates or disks 29 and 30 can be fastened to one another in a suitable manner. As shown in Figures h and 6, the disks 9 and 3o are held together by an adhesive, designated 35, with the membrane 32 therebetween. The disk 29 is provided with an adjusting projection 36 to facilitate the insertion and removal of the dust collecting container 19 into and from the interior of the housing 11.

The removable outer finishes disgusting 12 is with a yourself inwardly extending tubular member or provided with an inlet tube 12a passing through the inlet 34- of the end plate is enough when the cover 12 is in its closed position "and" the end plate 2? of the dust container "~ 19 is in place in the housing .11. If this is the case, the tubular element 12a engages the membrane 32 and tensions it with the result that the hole 53 is enlarged and the tubular element passes through the membrane and extends through the enlarged opening 34-. In this in the tensioned state, the membrane 32 hugs and envelops the outer surface of the tubular element 12a in an airtight manner, as can be seen from FIG.

The disks 29a and 30a of the end plate 27 can be viewed as outer and correspondingly inner disks. As can be seen from FIGS. 3 and 4, the outer disk 29 has an elongated tongue or a narrow strip 37, which extends over the opening 29a, and the on the opposite end is integrally connected. The tongue 37 covers only a central part of the membrane 32 and extends over the hole 33 located therein · The part of the tongue 37i that * is over the hole 33 is at least like this as great as the extent of it in relation to the normal of the

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Long axis of the tongue.

According to the invention, an incision 38 is provided in the tongue 37 which lies in the middle of its ends and extends diagonally in a line which forms an acute angle with the longitudinal axis of the tongue. The incision 3S-. According to the invention, a line preferably runs diagonally which, along the longitudinal axis of the tongue 37, forms an acute angle which lies in a range between 20 ° and Mo ^0. In the preferred exemplary embodiment shown in FIGS. 3 and 4, the incision 39 »has an acute angle of approximately 30 ° with respect to the longitudinal axis of the tongue 37».

On the opposite sides of the incision 33, the tongue 37 consists of fingers 37a and 37oj, which are diametrically opposed to one another opposite peripheral edge of the opening 29a in the outer disc 29 are directed inwardly towards one another. Furthermore, the fingers 37a and 37b have pointed outer ends, which are opposite one another and as can be seen from FIG is to overlap.

The pointed outer ends of fingers 37a and 37b push through hole 33 in the membrane. 32, vrenn them through the tubular element 12a from the plane of the outer. >> Disc 29a cannot be forcibly tilted on the inside. When this has happened, the pointed outer ends of the fingers 3? A and 37h lie on the outer surface of the tubular element 12a, as can be seen from FIG . tfsnn the rohrfömige El © m @ nt 12a from the inlet 34 of the end plate 2? herausgii £ <Qig © ii is, biases the Kembran 32 -dit T ¹ GLIE the fingers ~ 7 uad 37h ®m the outer surface of membrane de ;? 2? Ξ;. ': Ϊ́ .- = * - ^^ ί, Σ ^ ρ- the

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Finger in the plane of the end plate "7" creating the hole 33 in the Mombrnn essentially closed v / is ·

The diagonal incision J>& can be made in the tongue 37 so that it cuts this completely or that only a partial incision is made, the remaining part breaking through when the pointed outer ends of the fingers 37a and 37b pass through the hole 33 in push the membrane when these are forcibly tilted inwardly by the tubular element 12ε sub the plane of the outer disk 29.

Yv'i-e r.us Figure 4, XSt ₁ , the pointed outer ends of the fingers 37a and 37b extend completely over the hole 33 in the membrane 32 and their furthest outer parts cover the outer surface of the membrane on the Each other side of the hole. If the hollow element 12p. is withdrawn from the inlet 34 of the end plate 27, the membrane then acts in such a way that the outermost parts of the pingers, after being pushed through the hole 33 by means of the tubular element 12a, towards the inner surface of the membrane and forced into the plane of the end plate 27.

As can be seen most clearly from FIGS. 3 and 4, the diagonal incision 33 divides the tongue 37 into two Parts that extend axially and fingers 37a and 37b that are aligned with each other. Each of the fingers runs from a first area at its outer end to the inside in the direction of a second area, which is its inner end The end is closer. J) the first and second areas of each

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Finger cine) radially away from the hole 33 in the diaphragm 32 & n diametrically opposed peripheral edges thereof; directed.

As can be clearly seen in Figure 4, each of the pointed ends of fingers y / a and 37b has an inner part overlying another part of the hole 33 in membrane 32 and a second outer part. The outer parts of the pointed fingers 37a and. 37b are located in areas of the membrane 32 on diametrically opposite circumferential edges of the hole 33

According to the invention, the connecting plate 27 has two parts 27a and 27b which can be moved around a case line 39 between a first position in which the parts are in the same plane and a second position in which they are located the parts are transverse to and at right angles to the first position, as can be seen in Fig. 6. For example, the inner disc 3o may be notched to define the fold line 39 and the outer disc 29 may be cut at the fold line 39, uci . to facilitate the flipping of the two portions 27a and 27b between the first and second position, the end plate 27 moreover comprises a pair of slots 4o and 41 on _the;..> fold line 39, the sides lying in countertransference "·"} separated of the air inlet 34 are arranged in the end plate.

The bag 26, which is collapsible, stretchable and air-permeable , is made of a porous sheet-like material such as, for example, paper. The bag 26 is at one end in closed and at its opposite end at 43

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213022?

open minded. As can be seen from FIGS. 2 and 3, the bag 26 has a pair of side surfaces 4 * t, 44 and a pair of connecting end surfaces 45, 4 $, which run perpendicular to the side surfaces. The side surfaces 44, 44 are almost flat and the end surfaces 45, 45 are folded.

The folds 45a of the end walls 45 have on their outer Ends projections 46 which protrude beyond the open end 43 of the bag 26 and which are aligned with one another and lugs 47 form when the folds 45a are compressed and bundled will. The side surfaces 44, 44 have semicircular notches 5o at the open ends 43 of the bag 26, as shown in FIG Figure 3 can be seen.

From Figures 2 and 3 it can be seen that the slots 40 and 41 receive the lugs 47 at the open end 43 of the bag, whereby the bag is attached to the end plate and aligned. Before this happens, a suitable adhesive is applied to the open ends 43 of the bag in the area of the projections 46, as indicated by 46a, in order to seal the connections between the folds 45a. Suitable adhesive is also applied to the outer surfaces of the flat side walls 44, 44 of the bag at zones 48 adjacent the notched open ends 43 of the bag, as indicated at 49 in FIG.

The two parts 27a and 7b of the end cover 27 are then clamped over the open end 43 of the pouch with the inner sides of the two parts against the zones 48 of the side walls 44, 44 on which the adhesive has been applied at 4.9. If the parts 27a and 27b of the cover 27

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now in the same plane, v / ic can be seen from the figure, the areas 48 of the side walls 44, IUV of the bag and the cover 27 with the inner side of which the zones 43 are attached, form the closed end of the Dust collecting container 19. If the parts 2Va and 27b of the cover 27 are also moved into the same plane, as can be seen from Figure 2, the semicircular notches 5> o in the side surfaces form an opening 5oa, which with the inlet 34 of the cover agrees (see Figure 8).

As can be seen from Figure 3, the diagonally leading falls Incision 38 in tongue 37 with the fold line in the end plate 27 together. Accordingly, the fingers 37a and 37b end with their outer ends at the fold line 39, around which the two parts 27a and 27b of the end plate 27 are pivotable relative to each other. Due to this design according to the invention, the fingers 37a and 37b cannot be damaged or destroyed if the parts 27a and 27b of the End plate can be swiveled around the fold line.

El I 129o

109852 / UOg BADORiGlNAL

is

Dust collection bag according to claim 1 or?, Characterized Marked that the spitzvorlauf ends. outer Ends of the fingers (37a, 37b) extend completely over the Spread the hole (33) in the membrane (32.) _and. that their .... extreme Divide the outer surface of the membrane (32) from one another cover the other side of the hole.

6. Stnubrufiang bag according to claim 1 or one of the following, d p. C u τ c h ce ic e η η ζ ei ch η ο t, el aß the diagonal incision (38) of the tongue (37) extends along a line that forms an acute angle to the longitudinal axis, which is between 2o ° and ¹ Io ⁰ .

?. Stnubruffon bag according to Claim 1 or one of the following, characterized in that the diagonally extending incision (38) of the tongue (37) is located on a fold line (39) of the plate (? 7), around which two parts (£ 9 and 3 °) ^{Let the} plate swivel between two positions, the parts being in one position in the same plane and in the other forming a right angle to the plane and abutting one another.

S. dust collection bag according to claim 1 or one of the following, characterized in that the fastening plate (? 7) bus two parts that are equal in their external dimensions (29, 3o), which is non-hingedly connected at an edge (31) sine ..

9 · dust collecting bag according to claim 1 or one of the following, characterized in that a dash diagram membrane (32), located between 6s collapsible parts (29, 3o) the 3efestigungsplatte (P?) Which is provided with a hole (33).

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Claims (3)

Pat ent calls 1.JDisposable self-sealing dust catcher for dust * suction cup, with a mounting plate, which can be inserted a pipe learner to introduce dusty air into the Container has an opening and an elastic membrane, which dries up over the opening and is assigned to the opening has a small hole, with a tongue attached to the plate protruding over the hole and the tongue over the hole Reaching part of the tongue, based on the normal to the longitudinal axis of the tongue, at least as wide as the extent of the Loches is characterized by the fact that at least that part of the tongue (37) which extends over the hole (33) has a diagonal incision (30) has along a line which forms an acute angle with the longitudinal axis of the tongue (37). Dust collection bag according to Claim 1, characterized in that it is known ei chnet that the tongue (57) lent a unit Forms part of the plate (29) and is attached to opposite ends of the opening, and that the tongue (37) to the opposite sides of the incision (38) fingers (37s ι 37b), which run inward and are directed towards each other and have pointed outer ends that lying next to each other " 3. Dust collection bag according to claim 1, characterized in that that egg diagonally running incision (38) of the tongue (37) runs only through part of the same. Dust bag according to claim 1 or 2, characterized by that the diagonal incision (3S) of the tongue (37) is completely guided through it. El I 129o 109852 / UOS -2- BATH ORIGINAL Blank page