EP1697574B1 - Bellows-type collar for washing machines - Google Patents

Bellows-type collar for washing machines Download PDF

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Publication number
EP1697574B1
EP1697574B1 EP04804896A EP04804896A EP1697574B1 EP 1697574 B1 EP1697574 B1 EP 1697574B1 EP 04804896 A EP04804896 A EP 04804896A EP 04804896 A EP04804896 A EP 04804896A EP 1697574 B1 EP1697574 B1 EP 1697574B1
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EP
European Patent Office
Prior art keywords
collar
bellows
ring
drum
visible
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP04804896A
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German (de)
French (fr)
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EP1697574A2 (en
Inventor
Eduardo Compains
Oliver SCHÖNE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
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BSH Bosch und Siemens Hausgeraete GmbH
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Publication of EP1697574A2 publication Critical patent/EP1697574A2/en
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Publication of EP1697574B1 publication Critical patent/EP1697574B1/en
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/26—Casings; Tubs
    • D06F37/266—Gaskets mounted between tub and casing around the loading opening
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
    • D06F37/10—Doors; Securing means therefor
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/22—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a horizontal axis
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/12—Casings; Tubs
    • D06F39/14—Doors or covers; Securing means therefor

Definitions

  • the invention relates to a Faltenbalgmanschette for washing machines with a machine housing, a tub disposed therein, rotatably mounted in the tub rotatably mounted drum and a frontal feed opening, wherein the Faltenbalgmanschette comprises an outer, a middle and an inner collar ring and in the region of the feed opening both the housing as well as to the tub is sealingly secured, and the inner collar is visible through a closure of the feed opening.
  • Faltenbalgmanschetten show, for example, the DE 1 707 526 U1 and the DE 43 04 009 C2 , They bridge a gap between the stationary machine housing and the tub.
  • the tub In the operation of the washing machine, the tub is exposed to vibrations when the drum staggers due to unevenly distributed laundry in particular when spinning and passes these movements on a common storage of drum and tub to those.
  • the resulting relative movements between the tub and the machine housing must accommodate the bellows cuff.
  • It is made of an elastic material, usually made of rubber, and has a in a parallel to a rotation axis of the drum section views a Z or S-shaped structure of two substantially axially parallel cuff rings, an outer and an inner collar ring, and a these two connecting middle cuff wreath on.
  • Relative movements between the tub and the machine housing takes on the cuff, in which the outer and the inner collar ring can be moved against each other both in Drehachscardi and across.
  • the middle cuff ring is thereby deflected from its original position, and the cuff rings deform, sometimes forming wrinkles.
  • the fold runs predominantly parallel to the circumferential line of the feed opening.
  • the feed opening is generally closed by a transparent pot, which also allows an insight into the drum during operation of the washing machine.
  • a user's gaze inevitably falls on the visible part of the bellows cuff, which is essentially the inner collar of the cuff.
  • the visible part of the bellows cuff which is essentially the inner collar of the cuff.
  • This makes an unsightly impression and can cause the end pressure for the user, especially with strong tumbling movements of the drum and a corresponding deformation of the Faltenbalgmanschette that the washing machine is not working properly and the laundry load was not equal.
  • cuff noise caused by the in the wrinkling of the inner collar ring known as so-called cuff noise in the immediate vicinity of the transparent pot, which can often be very annoying for users.
  • this object is achieved in that in a washing machine of the type mentioned the visible inner collar ring is associated with an annular stiffening element, which reduces a spread of deformation forces from the middle and outer collar ring on the inner collar ring.
  • the invention thus gives the idea that during operation of the washing machine, the bellows sleeve must always be subject to deformation as a whole in order to fulfill its function. Because with an average wobbling motion, in which a drum neck of the laundry drum on the bellows cuff just does not start, the relative shift occurring between the edge of the loading opening of the tub and the machine housing in general from the outer fold of the cuff, so the middle and outer collar ring be recorded. Therefore, the visible inner collar of the Faltenbalgmanschette is so far stiffened that it shows no wrinkling at least in an average tumbling motion of the laundry drum. Rather, a convolution takes place in the region of the invisible outer fold of the cuff.
  • the invention does not go so far as to completely stiffen the inner collar. It does not exclude the possibility of deformation of the inner cuff ring in the event of load peaks. In any case, this occurs when the tumbling movement of the laundry drum is so strong that the drum neck starts at the Faltenbalgmanschette or performs the entire oscillating system, for example during spin, exceptionally large relative movements. Of course, the cuff must be in this strain Yield all. Therefore, the inner collar can not be rigid. Under these conditions, therefore, a drape of wrinkles in its area can not be completely prevented.
  • the stiffening element is arranged in a ring parallel to the peripheral line of the feed opening. It thus ensures a stiffening effect on the bellows sleeve around the feed opening
  • the stiffening element consist of a thickened trained area of Faltenbalgmanschette.
  • This annular thickening can be realized without much extra effort in the production of Faltenbalgmanschette. It does not constitute an accessory that would need to be integrated into the cuff, and thus presents no difficulties with regard to unwanted interactions between the cuff and a separate stiffening element.
  • they can be very variable in their dimensions and adapted by a variation of their dimensions according to the needs easily.
  • stiffening element a flexible metal ring which is vulcanized on or in the rubber bellows cuff.
  • stiffening element can only have a small cross-section for reasons of space.
  • the flexible metal ring can also be arranged in addition to or in the annular thickening and thus combine the advantages of both variants of a stiffening element in a third.
  • the best effect of the stiffening element is to be expected if it acts as possible on the entire visible area of the Faltenbalgmanschette, ie on the entire inner cuff ring. Since the Faltenbalgmanschette and thus the inner sleeve ring is fixed on the housing side on the edge of the feed opening of the machine housing, it constitutes an advantageous development of the invention, when the stiffening element is arranged in a region of the inner collar which is closest to a drum neck of the drum. The inner sleeve ring thus extends between the attachment of the Faltenbalgmanschette on the machine housing on the one hand and the stiffening element near the drum neck on the other.
  • the stiffening element is arranged on the invisible side of the inner sleeve ring so as not to interfere with the surface of view of the inner sleeve ring.
  • the arrangement of the stiffening element near the drum neck offers a further advantage: since the stiffening element is designed as a thickening, that is, as a material concentration, in the bellows sleeve and is arranged at the location of the cuff, which can be subjected to great load during operation when the rotating drum neck starts, protects the stiffening element at this point, the cuff at the same time against rubbing and prevents a wear-related leakage.
  • a hinge portion is arranged in the hidden portion of the Faltenbalgmanschette, which favors a deformation of the Faltenbalgmanschette in this area. This reinforces the effect of the stiffening element and ensures that the visible area is reliably protected from wrinkling under average loads.
  • a portion of the bellows cuff acts as a hinge as soon as it allows deformation earlier than its surroundings.
  • the dimensioning and production is particularly simple.
  • the joint section can be easily integrated into the bellows sleeve and can be arranged on the production side at almost any arbitrary point of the outer fold.
  • the articulation section defines that length of the bellows cuff between the rim of the tub and that of the machine housing which is available for deformation by folding.
  • the deformable under an average load area of the cuff is as long as possible. Therefore, it represents an advantageous development of the invention, when the hinge portion in the hidden portion of the bellows directly adjoins the stiffening element.
  • the maximum length of the sleeve namely the entire length of the outer fold, is provided for deformation under average load. Therefore, compared to conventional Bellows cuffs deviating sizing must be made so that material and manufacturing costs do not differ significantly from known cuffs.
  • Fig. 1 and 1a a schematic section through a washing machine according to the prior art
  • Fig. 2 a sectional view through a portion of a washing machine with an embodiment of a Faltenbalgmanschette invention.
  • a washing machine usually comprises a machine housing 1, in which a tub 2 is arranged, which includes a horizontal washing and centrifugal drum 3.
  • the tub 2 is connected via a pump sump with a drain pump 4, which, if necessary, pumps a wash liquor from the tub 2.
  • the tub 2 and the drum 3 are mounted on a front side of the drum 3 in a bearing 5 with respect to each other. While the tub 2 is not rotationally supported there, the drum 3 is rotatable about a at least approximately horizontally extending axis of rotation D and cantilevered.
  • the bearing 5 in turn is held in a perpendicular to the rotational axis D spanned vertical plane by not shown, radially tensioned tension springs in the machine housing 1.
  • the washing machine has a feed opening 6, which passes through the machine housing 1, the tub 2 and the drum 3 and allows loading of the washing machine.
  • the loading opening 6 is closed by a door-like hinged on one side and pivoting porthole, which contains a window 7 made of glass or plastic and therefore also allows an insight into the drum 3 during operation of the washing machine.
  • a Faltenbalgmanschette 8 which bridges a distance A between the machine housing 1 and the tub 2 sealingly at the respective edge to the feed opening 6 of both the machine housing 1 and the tub 2 and extends around the circumference of the feed opening 6 around.
  • the Faltenbalgmanschette 8 is adapted on the one hand in terms of their material and on the other hand in terms of their shape. It consists on the one hand of elastic material, preferably made of rubber, and has, on the other hand viewed in a rotational axis parallel cross section Z-shaped cross-section with a bellows 9.
  • the bellows 9 also allows permanently large relative movements between the machine housing 1 and the tub 2 without causing damaging stretching of the sleeve 8. It comprises an inner collar 10 visible through the glass window 7 and a concealed outer fold.
  • the outer fold is composed of a middle collar 11 and an outer collar 12.
  • the outer collar 12 is substantially parallel to the inner collar 10, whereas the central collar 11 connecting the outer 12 to the inner collar 10 is inclined at an angle in the Z-shaped bellows 9 opposite them.
  • the drum 3 If the drum 3 is loaded unevenly, so that the laundry load in the drum 3 forms an imbalance, the drum 3 is thereby caused to oscillate during operation.
  • the vibrations are transmitted via the common bearing 5 of the drum 3 and the tub 2 also on this.
  • the tub 2 Compared with the machine housing 1, the tub 2 performs relative movements, whereby the distance A is sometimes faster in some cases larger and smaller.
  • the tub 2 and the drum 3 also tumble together with the bearing 5 as the center of rotation in a suspension, not shown, of the oscillating unit in the housing 1, so that at one point of the feed opening, the distance A increases while he is in another place, for example at a position opposite to the axis of rotation D, reduced.
  • Fig. 2 a sectional view through a portion of a washing machine with an embodiment of a Faltenbalgmanschette 20 according to the invention is shown. It is composed of an externally visible inner collar 21 and an invisible outer fold of a middle collar 22 and an outer collar 23.
  • the middle collar 22 connects the outer 23 and the inner collar 21 along their free edges 24, 25
  • Known cuffs 20 and the sleeve 20 is attached via a fixed edge 26 of the inner sleeve ring 21 to a machine housing 1 and a fixed edge 27 of the outer sleeve ring 25 to a tub 2.
  • a conventional drum 3 is arranged, the drum neck 13 is disposed in the vicinity of the free edge 24 of the inner sleeve ring 21.
  • a thickening in the form of a directed towards the drum neck 13 nose 28 is formed. It goes on the middle collar 22 in a joint portion 29, which by a material taper of the cross section of the middle cuff ring 22 is formed. This is followed by a bead 30, which is formed as a material thickening.
  • the nose 28 forms a stiffening element on the inner collar ring 21, which encloses it between itself and its attachment to the machine housing 1. It runs uniformly on the inner collar 21 along the circumferential line of the feed opening and is formed as part of the free edge 24. It thus represents an annular stiffening of the free edge 24. It expands on the side facing away from a viewing surface side of the inner collar ring 21. Thus, it is not readily apparent to a user, with which the bellows cuff 20 optically conveys a conventional impression to him.
  • joint portion 29 and bead 30 are disposed on the middle collar ring 22 and therefore also in a user concealed area. They also run uniformly along the entire circumference of the feed opening.
  • the hinge portion 29 is a particularly resilient portion of the outer fold, which is therefore in a relation to mechanical stresses by rotating parts of the washing machine or by laundry protected in the outer fold and between the nose 28 and the bead 30 is arranged.
  • Both the nose 28 and the bead 30 on the other hand offer resistance to deformation due to their material thickness.
  • the nose 28, the joint portion 29 and the bead 30 together therefore specifically define an area in the outer fold, which deforms in a force applied by the tub 2 on the Faltenbalgmanschette 20 force, while the other areas remain initially largely uninvolved.
  • a consequent folding protects the inner cuff 21 mainly the nose 28, which opposes a convolution stiffening.
  • the stiffening effect can also be achieved by the fact that in the described thickened regions 28 and 30 each or optionally a flexible metal ring is vulcanized or vulcanized. This can also be provided in addition to a material thickening.
  • the free edge 24 is exposed by the start of the rotating drum neck 13 considerable wear. If the nose 28 stiffening counteracts a starting force of the drum neck 13, the wear is increased. In order to avoid any wear-related leakage of the bellows sleeve 20, the dimensioning of the nose 28 is additionally designed against rubbing during the normal life of the washing machine.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Sealing Devices (AREA)
  • Mechanical Sealing (AREA)
  • Ropes Or Cables (AREA)

Abstract

A bellows-type collar for washing machines comprising a machine housing, a lye container that is arranged therein, a cantilevered drum which is rotatably disposed in the lye container, and a frontal charging door. Said bellows-type collar is provided with an inner, a central, and an outer collar ring and is sealingly fixed to both the machine housing and the lye container in the area of the charging door. The inner collar ring is visible through a bull's eye-type glass of the access hole located on the housing side. The aim of the invention is to embody the bellows-type collar in such a way that the inner collar ring remains as crease-free as possible during movements of the lye container. Said aim is achieved by assigning an annular stiffening element to the visible inner collar ring, said stiffening element blocking forces that could deform the inner collar ring starting from the more peripheral collar rings.

Description

Die Erfindung betrifft eine Faltenbalgmanschette für Waschmaschinen mit einem Maschinengehäuse, einem darin angeordneten Laugenbehälter, einer im Laugenbehälter drehbar angeordneten und fliegend gelagerten Trommel und einer frontalen Beschickungsöffnung, wobei die Faltenbalgmanschette einen äußeren, einen mittleren und einen inneren Manschettenkranz umfasst und im Bereich der Beschickungsöffnung sowohl an dem Gehäuse als auch an dem Laugenbehälter dichtend befestigt ist, und der innere Manschettenkranz durch einen Verschluss der Beschickungsöffnung hindurch sichtbar ist.The invention relates to a Faltenbalgmanschette for washing machines with a machine housing, a tub disposed therein, rotatably mounted in the tub rotatably mounted drum and a frontal feed opening, wherein the Faltenbalgmanschette comprises an outer, a middle and an inner collar ring and in the region of the feed opening both the housing as well as to the tub is sealingly secured, and the inner collar is visible through a closure of the feed opening.

Derartige Faltenbalgmanschetten zeigen beispielsweise die DE 1 707 526 U1 und die DE 43 04 009 C2 . Sie überbrücken einen Spalt zwischen dem feststehenden Maschinengehäuse und dem Laugenbehälter. Im Betrieb der Waschmaschine ist der Laugenbehälter Schwingungen ausgesetzt, wenn die Trommel infolge ungleich verteilter Wäsche insbesondere beim Schleudern taumelt und diese Bewegungen über eine gemeinsame Lagerung von Trommel und Laugenbehälter an jenen weitergibt. Die daraus resultierenden Relativbewegungen zwischen Laugenbehälter und Maschinengehäuse muss die Faltenbalgmanschette aufnehmen. Sie ist dazu aus einem elastischen Material, meistens aus Gummi, gefertigt und weist einen in einem zu einer Drehachse der Trommel parallelen Schnitt betrachtet eine Z- oder S-förmige Struktur aus zwei im wesentlichen achsparallelen Manschettenkränzen, einem äußeren und einem inneren Manschettenkranz, und einem diese beiden verbindenden mittleren Manschettenkranz auf. Relativbewegungen zwischen Laugenbehälter und Maschinengehäuse nimmt die Manschette auf, in dem der äußere und der innere Manschettenkranz sowohl in Drehachsrichtung als auch quer dazu gegeneinander verschoben werden können. Der mittlere Manschettenkranz wird dabei aus seiner ursprünglichen Lage ausgelenkt, und die Manschettenkränze verformen sich, zum Teil unter Bildung von Falten. Die Faltung verläuft dabei überwiegend parallel zur Umfangslinie der Beschickungsöffnung.Such Faltenbalgmanschetten show, for example, the DE 1 707 526 U1 and the DE 43 04 009 C2 , They bridge a gap between the stationary machine housing and the tub. In the operation of the washing machine, the tub is exposed to vibrations when the drum staggers due to unevenly distributed laundry in particular when spinning and passes these movements on a common storage of drum and tub to those. The resulting relative movements between the tub and the machine housing must accommodate the bellows cuff. It is made of an elastic material, usually made of rubber, and has a in a parallel to a rotation axis of the drum section views a Z or S-shaped structure of two substantially axially parallel cuff rings, an outer and an inner collar ring, and a these two connecting middle cuff wreath on. Relative movements between the tub and the machine housing takes on the cuff, in which the outer and the inner collar ring can be moved against each other both in Drehachsrichtung and across. The middle cuff ring is thereby deflected from its original position, and the cuff rings deform, sometimes forming wrinkles. The fold runs predominantly parallel to the circumferential line of the feed opening.

Die Beschickungsöffnung ist im allgemeinen von einem durchsichtigen Topf verschlossen, der auch während des Betriebs der Waschmaschine einen Einblick in die Trommel ermöglicht. Der Blick eines Benutzers fällt dabei zwangsweise auch auf den sichtbaren Teil der Faltenbalgmanschette, das ist im wesentlichen der innere Manschettenkranz. Beim Schleudern ist daher eine Verformung der Manschette, insbesondere des inneren Manschettenkranzes, deutlich sichtbar. Dies macht einen unschönen Eindruck und kann für den Benutzer vor allem bei starken Taumelbewegungen der Trommel und einer entsprechenden Verformung der Faltenbalgmanschette den Endruck entstehen lassen, dass die Waschmaschine nicht einwandfrei arbeitet und der Wäschefracht nicht gewachsen sei. Außerdem entstehen durch das bei der Faltenbildung des inneren Manschettenkranzes als sogenanntes Manschettenklatschen bekannte Geräusche in der unmittelbaren Nähe des durchsichtigen Topfes, die für Benutzer oftmals sehr störend wirken können.The feed opening is generally closed by a transparent pot, which also allows an insight into the drum during operation of the washing machine. A user's gaze inevitably falls on the visible part of the bellows cuff, which is essentially the inner collar of the cuff. When spinning is therefore a deformation of the sleeve, in particular of the inner cuff, clearly visible. This makes an unsightly impression and can cause the end pressure for the user, especially with strong tumbling movements of the drum and a corresponding deformation of the Faltenbalgmanschette that the washing machine is not working properly and the laundry load was not equal. In addition, caused by the in the wrinkling of the inner collar ring known as so-called cuff noise in the immediate vicinity of the transparent pot, which can often be very annoying for users.

Es ist daher eine Aufgabe der vorliegenden Erfindung, im Betriebszustand einer Waschmaschine eine für den Benutzer sichtbare Verformung der Faltenbalgmanschette und die dabei entstehenden Geräusche zu reduzieren.It is therefore an object of the present invention to reduce in the operating state of a washing machine visible to the user deformation of the Faltenbalgmanschette and the resulting noise.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, dass bei einer Waschmaschine der eingangs genannten Art dem sichtbaren inneren Manschettenkranz ein ringförmiges Versteifungselement zugeordnet ist, das eine Ausbreitung von Verformungskräften vom mittleren und äußeren Manschettenkranz her auf den inneren Manschettenkranz vermindert.According to the invention this object is achieved in that in a washing machine of the type mentioned the visible inner collar ring is associated with an annular stiffening element, which reduces a spread of deformation forces from the middle and outer collar ring on the inner collar ring.

Die Erfindung gibt also die Vorstellung auf, dass beim Betrieb der Waschmaschine die Faltenbalgmanschette zur Erfüllung ihrer Funktion immer als Ganzes einer Verformung unterliegen muss. Denn bei einer durchschnittlichen Taumelbewegung, bei der ein Trommelhals der Wäschetrommel an der Faltenbalgmanschette gerade noch nicht anläuft, kann die dabei auftretende Relativverschiebung zwischen dem Rand der Beschickungsöffnung des Laugenbehälters und dem des Maschinengehäuses im allgemeinen von der Außenfalte der Manschette, also dem mittleren und äußeren Manschettenkranz aufgenommen werden. Daher ist der sichtbare innere Manschettenkranz der Faltenbalgmanschette so weit versteift, dass er zumindest bei einer durchschnittlichen Taumelbewegung der Wäschetrommel keinen Faltenwurf zeigt. Vielmehr erfolgt eine Faltung in den Bereich der nicht sichtbaren Außenfalte der Manschette hinein.The invention thus gives the idea that during operation of the washing machine, the bellows sleeve must always be subject to deformation as a whole in order to fulfill its function. Because with an average wobbling motion, in which a drum neck of the laundry drum on the bellows cuff just does not start, the relative shift occurring between the edge of the loading opening of the tub and the machine housing in general from the outer fold of the cuff, so the middle and outer collar ring be recorded. Therefore, the visible inner collar of the Faltenbalgmanschette is so far stiffened that it shows no wrinkling at least in an average tumbling motion of the laundry drum. Rather, a convolution takes place in the region of the invisible outer fold of the cuff.

Gleichwohl geht die Erfindung nicht so weit, den inneren Manschettenkranz vollständig zu versteifen. Sie schließt die Möglichkeit einer Verformung des inneren Manschettenkranzes für den Fall von Belastungsspitzen nicht aus. Dieser tritt jedenfalls dann auf, wenn die Taumelbewegung der Wäschetrommel so stark ist, dass der Trommelhals an der Faltenbalgmanschette anläuft oder das gesamte schwingende System, beispielsweise während des Schleuderns, außergewöhnlich große Relativbewegungen vollführt. Dieser Belastung muss die Manschette natürlich in ihrer Gesamtheit nachgeben. Daher kann der innere Manschettenkranz nicht steif ausgebildet sein. Unter diesen Bedingungen ist daher ein Faltenwurf in seinem Bereich nicht gänzlich zu verhindern.However, the invention does not go so far as to completely stiffen the inner collar. It does not exclude the possibility of deformation of the inner cuff ring in the event of load peaks. In any case, this occurs when the tumbling movement of the laundry drum is so strong that the drum neck starts at the Faltenbalgmanschette or performs the entire oscillating system, for example during spin, exceptionally large relative movements. Of course, the cuff must be in this strain Yield all. Therefore, the inner collar can not be rigid. Under these conditions, therefore, a drape of wrinkles in its area can not be completely prevented.

Um diesen Anforderungen gerecht zu werden, also einerseits bei einer durchschnittlichen Beanspruchung der Manschette einer Faltenbildung entgegenzuwirken, und andererseits bei Belastungsspitzen eine Verformung der Manschette zu ermöglichen, ist das Versteifungselement parallel zur Umfangslinie der Beschickungsöffnung ringförmig angeordnet. Es stellt damit eine versteifende Wirkung auf die Faltenbalgmanschette rings um die Beschickungsöffnung sicherTo meet these requirements, so on the one hand counteract wrinkling at an average stress on the cuff, and on the other hand to allow deformation of the cuff at load peaks, the stiffening element is arranged in a ring parallel to the peripheral line of the feed opening. It thus ensures a stiffening effect on the bellows sleeve around the feed opening

Diesen Anforderungen genügen Versteifüngselemente, die die Ringform des inneren Manschettenkranzes einerseits bis zu einer bestimmten Kraft stützend aufrechterhalten, aber andererseits bei Überschreiten dieser Kraft elastisch nachgeben. Zu diesem Zweck kann das Versteifungselement nach einer vorteilhaften Ausgestaltung der Erfindung aus einem verdickt ausgebildeten Bereich der Faltenbalgmanschette bestehen. Diese ringförmige Verdickung lässt sich ohne großen Mehraufwand bei der Herstellung der Faltenbalgmanschette verwirklichen. Sie stellt kein Zusatzteil dar, das in die Manschette integriert werden müsste, und bietet daher keine Schwierigkeiten hinsichtlich ungewollter Interaktionen zwischen der Manschette und einem separaten Versteifungselement. Zudem kann sie in ihren Abmessungen sehr variabel und durch eine Variation ihrer Dimensionen dem Bedarf entsprechend einfach angepasst werden.These requirements meet stiffening elements that support the ring shape of the inner collar on the one hand up to a certain force, but on the other hand yield elastically when this force is exceeded. For this purpose, the stiffening element according to an advantageous embodiment of the invention consist of a thickened trained area of Faltenbalgmanschette. This annular thickening can be realized without much extra effort in the production of Faltenbalgmanschette. It does not constitute an accessory that would need to be integrated into the cuff, and thus presents no difficulties with regard to unwanted interactions between the cuff and a separate stiffening element. In addition, they can be very variable in their dimensions and adapted by a variation of their dimensions according to the needs easily.

Nach einer dazu alternativen Ausgestaltung der Erfindung kann als Versteifungselement ein flexibler Metallring verwendet werden, der an oder in den Gummi der Faltenbalgmanschette vulkanisiert ist. Diese Variante ist zu bevorzugen, wenn das Versteifungselement aus Platzgründen nur einen geringen Querschnitt aufweisen kann.According to an alternative embodiment of the invention can be used as a stiffening element, a flexible metal ring which is vulcanized on or in the rubber bellows cuff. This variant is preferable if the stiffening element can only have a small cross-section for reasons of space.

Schließlich kann der flexible Metallring auch zusätzlich an oder in der ringförmigen Verdickung angeordnet sein und so die Vorteile beider Varianten eines Versteifungselements in einer dritten miteinander vereinigen.Finally, the flexible metal ring can also be arranged in addition to or in the annular thickening and thus combine the advantages of both variants of a stiffening element in a third.

Die beste Wirkung des Versteifungselements ist zu erwarten, wenn es möglichst auf den gesamten sichtbaren Bereich der Faltenbalgmanschette, also auf den gesamten inneren Manschettenkranz einwirkt. Da die Faltenbalgmanschette und mithin der innere Manschettenkranz gehäuseseitig an dem Rand der Beschickungsöffnung des Maschinengehäuses festgelegt ist, stellt es eine vorteilhafte Weiterbildung der Erfindung dar, wenn das Versteifungselement in einem Bereich des inneren Manschettenkranzes angeordnet ist, der einem Trommelhals der Trommel am nächsten liegt. Der innere Manschettenkranz erstreckt sich somit zwischen der Befestigung der Faltenbalgmanschette am Maschinengehäuse einerseits und dem Versteifungselement nahe dem Trommelhals andererseits. Er spannt sich folglich zwischen zwei Widerlagern auf und deckt den sichtbaren Bereich der Manschette im wesentlichen ab. Vorteilhafterweise ist das Versteifungselement auf der nicht sichtbaren Seite des inneren Manschettenkranzes angeordnet, um die Ansichtsfläche des inneren Manschettenkranzes nicht zu beeinträchtigen.The best effect of the stiffening element is to be expected if it acts as possible on the entire visible area of the Faltenbalgmanschette, ie on the entire inner cuff ring. Since the Faltenbalgmanschette and thus the inner sleeve ring is fixed on the housing side on the edge of the feed opening of the machine housing, it constitutes an advantageous development of the invention, when the stiffening element is arranged in a region of the inner collar which is closest to a drum neck of the drum. The inner sleeve ring thus extends between the attachment of the Faltenbalgmanschette on the machine housing on the one hand and the stiffening element near the drum neck on the other. It consequently stretches between two abutments and essentially covers the visible area of the cuff. Advantageously, the stiffening element is arranged on the invisible side of the inner sleeve ring so as not to interfere with the surface of view of the inner sleeve ring.

Die Anordnung des Versteifungselements nahe dem Trommelhals bietet einen weiteren Vorteil: Da das Versteifungselement als Verdickung, also als Materialkonzentration, in der Faltenbalgmanschette ausgebildet ist und an der Stelle der Manschette angeordnet ist, die im Betrieb bei anlaufendem rotierendem Trommelhals großer Belastung ausgesetzt sein kann, schützt das Versteifungselement an dieser Stelle die Manschette zugleich gegen Durchreiben und verhindert eine verschleißbedingte Undichtigkeit.The arrangement of the stiffening element near the drum neck offers a further advantage: since the stiffening element is designed as a thickening, that is, as a material concentration, in the bellows sleeve and is arranged at the location of the cuff, which can be subjected to great load during operation when the rotating drum neck starts, protects the stiffening element at this point, the cuff at the same time against rubbing and prevents a wear-related leakage.

Mit der Versteifung des inneren Manschettenkranzes verlagert sich die Faltenbildung wunschgemäß in die Außenfalte der Faltenbalgmanschette. Dieser Effekt lässt sich noch dadurch unterstützen, dass der Faltenbildung in diesem Bereich Vorschub geleistet wird. Nach einer vorteilhaften Ausgestaltung der Erfindung ist daher in dem verdeckten Abschnitt der Faltenbalgmanschette ein Gelenkabschnitt angeordnet, der eine Verformung der Faltenbalgmanschette in diesem Bereich begünstigt. So wird die Wirkung des Versteifungselements verstärkt und sichergestellt, dass der sichtbare Bereich bei durchschnittlichen Belastungen zuverlässig von Faltenbildung verschont bleibt.With the stiffening of the inner cuff ring, the wrinkling shifts as desired in the outer fold of the Faltenbalgmanschette. This effect can be further supported by the fact that the wrinkling in this area feed is made. According to an advantageous embodiment of the invention, therefore, a hinge portion is arranged in the hidden portion of the Faltenbalgmanschette, which favors a deformation of the Faltenbalgmanschette in this area. This reinforces the effect of the stiffening element and ensures that the visible area is reliably protected from wrinkling under average loads.

Ein Abschnitt der Faltenbalgmanschette wirkt als Gelenk, sobald er früher als seine Umgebung eine Verformung ermöglicht. Vorliegend lässt er sich am einfachsten durch eine besondere Formgebung in der Außenfalte ausbilden. Erfindungsgemäß wird dies dadurch erzielt, dass der Gelenkabschnitt von einem materialdünneren Bereich zwischen zwei materialdickeren, vorzugsweise verdickten Bereichen der Faltenbalgmanschette gebildet ist. Bei dieser Ausbildung des Gelenkabschnitts ist die Dimensionierung und Herstellung besonders einfach. Der Gelenkabschnitt lässt sich problemlos in die Faltenbalgmanschette integrieren und kann herstellungsseitig an nahezu jeder beliebigen Stelle der Außenfalte angeordnet werden.A portion of the bellows cuff acts as a hinge as soon as it allows deformation earlier than its surroundings. In the present case, it is easiest to train him by a special shape in the outer fold. According to the invention this is achieved in that the joint portion is formed by a thinner area between two material thicker, preferably thickened areas of the Faltenbalgmanschette. In this embodiment of the joint section, the dimensioning and production is particularly simple. The joint section can be easily integrated into the bellows sleeve and can be arranged on the production side at almost any arbitrary point of the outer fold.

Seiner Funktion entsprechend definiert der Gelenkabschnitt diejenige Länge der Faltenbalgmanschette zwischen dem Rand des Laugenbehälters und dem des Maschinengehäuses, der für eine Verformung durch Faltung zur Verfügung steht. Um eine ungleichmäßige Belastungsverteilung und eine dadurch bedingte unnötige Materialbeanspruchung weitgehend zu vermeiden, ist der unter einer Durchschnittsbelastung verformbare Bereich der Manschette möglichst lang auszubilden. Daher stellt es eine vorteilhafte Weiterbildung der Erfindung dar, wenn sich der Gelenkabschnitt in dem verdeckten Abschnitt der Faltenbalgmanschette unmittelbar an das Versteifungselement anschließt. Damit ist die größtmögliche Länge der Manschette, nämlich die gesamte Länge der Außenfalte für eine Verformung unter einer durchschnittlichen Belastung zur Verfügung gestellt. Daher muss keine gegenüber herkömmlichen Faltenbalgmanschetten abweichende Dimensionierung vorgenommen werden, so dass sich Material- und Herstellungsaufwand nicht nennenswert von bekannten Manschetten unterscheiden.According to its function, the articulation section defines that length of the bellows cuff between the rim of the tub and that of the machine housing which is available for deformation by folding. To an uneven load distribution and consequent unnecessary material stress To avoid largely, the deformable under an average load area of the cuff is as long as possible. Therefore, it represents an advantageous development of the invention, when the hinge portion in the hidden portion of the bellows directly adjoins the stiffening element. Thus, the maximum length of the sleeve, namely the entire length of the outer fold, is provided for deformation under average load. Therefore, compared to conventional Bellows cuffs deviating sizing must be made so that material and manufacturing costs do not differ significantly from known cuffs.

Das Prinzip der Erfindung wird nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Es zeigenThe principle of the invention will be explained in more detail with reference to an embodiment shown in the drawing. Show it

Fig. 1 und 1a einen schematischen Schnitt durch eine Waschmaschine nach dem Stand der Technik und Fig. 1 and 1a a schematic section through a washing machine according to the prior art and

Fig. 2 eine Schnittansicht durch einen Abschnitt einer Waschmaschine mit einer Ausführungsform einer erfindungsgemäßen Faltenbalgmanschette. Fig. 2 a sectional view through a portion of a washing machine with an embodiment of a Faltenbalgmanschette invention.

Nach Fig. 1 umfasst eine Waschmaschine üblicherweise ein Maschinengehäuse 1, in dem ein Laugenbehälter 2 angeordnet ist, der eine liegende Wasch- und Schleudertrommel 3 beinhaltet. Der Laugenbehälter 2 ist über einen Pumpensumpf mit einer Ablaufpumpe 4 verbunden, die bei Bedarf eine Waschflotte aus dem Laugenbehälter 2 abpumpt. Der Laugenbehälter 2 und die Trommel 3 sind an einer Stirnseite der Trommel 3 in einem Lager 5 mit Bezug zueinander gelagert. Während der Laugenbehälter 2 dort nicht drehend gehaltert ist, ist die Trommel 3 um eine mindestens annähernd horizontal verlaufende Drehachse D drehbar und fliegend gelagert. Das Lager 5 wiederum ist in einer senkrecht zur Drehachse D aufgespannten vertikalen Ebene durch nicht dargestellte, radial gespannte Zugfedern im Maschinengehäuse 1 gehalten.To Fig. 1 a washing machine usually comprises a machine housing 1, in which a tub 2 is arranged, which includes a horizontal washing and centrifugal drum 3. The tub 2 is connected via a pump sump with a drain pump 4, which, if necessary, pumps a wash liquor from the tub 2. The tub 2 and the drum 3 are mounted on a front side of the drum 3 in a bearing 5 with respect to each other. While the tub 2 is not rotationally supported there, the drum 3 is rotatable about a at least approximately horizontally extending axis of rotation D and cantilevered. The bearing 5 in turn is held in a perpendicular to the rotational axis D spanned vertical plane by not shown, radially tensioned tension springs in the machine housing 1.

An der dem Lager 5 der Trommel 3 gegenüberliegenden Frontseite weist die Waschmaschine eine Beschickungsöffnung 6 auf, die das Maschinengehäuse 1, den Laugenbehälter 2 und die Trommel 3 durchsetzt und ein Beladen der Waschmaschine ermöglicht. Die Beschickungsöffnung 6 ist durch ein türartig einseitig angeschlagenes und schwenkbares Bullauge verschlossen, das ein Fenster 7 aus Glas oder Kunststoff enthält und daher auch während des Betriebs der Waschmaschine einen Einblick in die Trommel 3 zulässt.At the bearing 5 of the drum 3 opposite front side, the washing machine has a feed opening 6, which passes through the machine housing 1, the tub 2 and the drum 3 and allows loading of the washing machine. The loading opening 6 is closed by a door-like hinged on one side and pivoting porthole, which contains a window 7 made of glass or plastic and therefore also allows an insight into the drum 3 during operation of the washing machine.

Der Abdichtung der Waschmaschine im Bereich der Beschickungsöffnung 6 dient eine Faltenbalgmanschette 8, die am jeweiligen Rand zur Beschickungsöffnung 6 sowohl des Maschinengehäuses 1 als auch des Laugenbehälters 2 einen Abstand A zwischen Maschinengehäuse 1 und Laugenbehälter 2 dichtend überbrückt und um den Umfang der Beschickungsöffnung 6 herum verläuft.The sealing of the washing machine in the region of the feed opening 6 is used a Faltenbalgmanschette 8, which bridges a distance A between the machine housing 1 and the tub 2 sealingly at the respective edge to the feed opening 6 of both the machine housing 1 and the tub 2 and extends around the circumference of the feed opening 6 around.

Während des Betriebs der Waschmaschine, insbesondere beim Schleudern, erfährt die Trommel 3 zusammen mit dem Laugenbehälter 2 erhebliche Schwingungen, wohingegen das Maschinengehäuse 1 fest steht. Die Schwingungen betreffen den Laugenbehälter 2, weil er und die Trommel 3 in dem Lager 5 gemeinsamen gelagert sind. Die Manschette 8 muss diese Relativbewegung zwischen Maschinengehäuse 1 und Laugenbehälter 2 ausgleichen. Diesem Zweck ist die Faltenbalgmanschette 8 einerseits hinsichtlich ihres Materials und andererseits hinsichtlich ihrer Form angepasst. Sie besteht zum einen aus elastischem Material, vorzugsweise aus Gummi, und weist zum anderen einen in einem drehachsenparallelen Querschnitt betrachtet Z-förmigen Querschnitt mit einem Faltenbalg 9 auf. Der Faltenbalg 9 ermöglicht auch dauerhaft große Relativbewegungen zwischen Maschinengehäuse 1 und Laugenbehälter 2, ohne eine schädigende Dehnung der Manschette 8 zu bewirken. Er umfasst einen durch das gläserne Fenster 7 hindurch sichtbaren inneren Manschettenkranz 10 und eine verdeckt angeordnete Außenfalte. Die Außenfalte setzt sich aus einem mittleren Manschettenkranz 11 und einem äußeren-Manschettenkranz 12 zusammen. Der äußere Manschettenkranz 12 verläuft im wesentlichen parallel zum inneren Manschettenkranz 10, wohingegen der mittlere Manschettenkranz 11, der den äußeren 12 mit dem inneren Manschettenkranz 10 verbindet, in dem Z-förmigen Faltenbalg 9 ihnen gegenüber in einem Winkel geneigt ist.During operation of the washing machine, in particular when spinning, the drum 3 undergoes considerable vibrations together with the tub 2, whereas the machine housing 1 is fixed. The vibrations relate to the tub 2, because he and the drum 3 are stored in the camp 5 common. The sleeve 8 must compensate for this relative movement between the machine housing 1 and the tub 2. For this purpose, the Faltenbalgmanschette 8 is adapted on the one hand in terms of their material and on the other hand in terms of their shape. It consists on the one hand of elastic material, preferably made of rubber, and has, on the other hand viewed in a rotational axis parallel cross section Z-shaped cross-section with a bellows 9. The bellows 9 also allows permanently large relative movements between the machine housing 1 and the tub 2 without causing damaging stretching of the sleeve 8. It comprises an inner collar 10 visible through the glass window 7 and a concealed outer fold. The outer fold is composed of a middle collar 11 and an outer collar 12. The outer collar 12 is substantially parallel to the inner collar 10, whereas the central collar 11 connecting the outer 12 to the inner collar 10 is inclined at an angle in the Z-shaped bellows 9 opposite them.

Ist die Trommel 3 ungleichmäßig beladen, so dass die Wäschefracht in der Trommel 3 eine Unwucht bildet, so wird die Trommel 3 im Betrieb dadurch in Schwingungen versetzt. Die Schwingungen übertragen sich über die gemeinsame Lagerung 5 der Trommel 3 und des Laugenbehälters 2 auch auf diesen. Gegenüber dem Maschinengehäuse 1 führt der Laugenbehälter 2 Relativbewegungen durch, wodurch der Abstand A in zum Teil schneller Folge mal größer und mal kleiner wird.If the drum 3 is loaded unevenly, so that the laundry load in the drum 3 forms an imbalance, the drum 3 is thereby caused to oscillate during operation. The vibrations are transmitted via the common bearing 5 of the drum 3 and the tub 2 also on this. Compared with the machine housing 1, the tub 2 performs relative movements, whereby the distance A is sometimes faster in some cases larger and smaller.

Diese Bewegungen muss die Faltenbalgmanschette 8 aufnehmen. Sie führen zu einer Verschiebung der beiden Maschettenkränze 10, 12 gegeneinander, und zwar nicht nur in horizontaler, sondern auch in vertikaler Richtung. Da sie jeweils an ihren einander abgewandten Rändern am Maschinengehäuse 1 bzw. am Laugenbehälter 2 befestigt sind, wird eine Längenänderung des Abstands A durch eine Verdrehung des mittleren Manschettenkranzes 11 ausgeglichen. Mit der Verdrehung verformen sich folglich auch die jeweils freien Ränder der Manschettenkränze 10, 12.These movements must accommodate the bellows cuff 8. They lead to a displacement of the two Maschettenkränze 10, 12 against each other, not only in the horizontal, but also in the vertical direction. Since they are each attached to their opposite edges on the machine housing 1 and the tub 2, a change in length of the distance A is compensated by a rotation of the middle sleeve ring 11. With the distortion deform Consequently, the respective free edges of the collar rings 10, 12th

Diese Verformung der Faltenbalgmanschette 9 verläuft, entlang der ringförmigen Beschickungsöffnung 6 betrachtet, nicht zwingend einheitlich. Denn der Laugenbehälter 2 und die Trommel 3 schwingen aufgrund der gefederten Aufhängung des Lagers 5 zum einen gemeinsam in Richtung der Drehachse D, womit sich der Abstand A allseitig um die Beschickungsöffnung 6 herum gleichsinnig vergrößert oder verringert. Diese Bewegung kann so stark werden, dass die Trommel 3 mit ihrem Trommelhals 13 an der Faltenbalgmanschette 9, insbesondere an dem inneren Manschettenkranz 10, mit dem er in etwa auf gleicher Höhe liegt, anläuft. Der Laugenbehälter 2 und die Trommel 3 taumeln außerdem zusammen mit der Lagerung 5 als Drehmittelpunkt in einer nicht dargestellten Aufhängung des schwingenden Aggregats im Gehäuse 1, so dass an einer Stelle der Beschickungsöffnung sich der Abstand A vergrößert, während er sich an einer anderen Stelle, beispielsweise an einer bezüglich der Drehachse D gegenüberliegenden Stelle, verringert.This deformation of the Faltenbalgmanschette 9, viewed along the annular feed opening 6, not necessarily uniform. Because the tub 2 and the drum 3 oscillate due to the sprung suspension of the bearing 5 on the one hand together in the direction of the axis of rotation D, whereby the distance A on all sides around the feed opening 6 increases or decreases in the same direction. This movement can become so strong that the drum 3 starts with its drum neck 13 on the Faltenbalgmanschette 9, in particular on the inner sleeve ring 10, with which it is approximately at the same height. The tub 2 and the drum 3 also tumble together with the bearing 5 as the center of rotation in a suspension, not shown, of the oscillating unit in the housing 1, so that at one point of the feed opening, the distance A increases while he is in another place, for example at a position opposite to the axis of rotation D, reduced.

Diese zum Teil einander überlagernden Bewegungen des Laugenbehälters 2 gegenüber dem feststehenden Maschinengehäuse 1 führen zu ebensolchen Verformungen der Faltenbalgmanschette 8. Sie erzeugen neben den bereits beschriebenen Verformungen der einzelnen Manschettenkränze 10, 11, 12 auch Faltungen, die durch das gläserne Fenster 7 hindurch von außen beobachtet werden können.These partially superimposed movements of the tub 2 relative to the stationary machine housing 1 lead to just such deformations of Faltenbalgmanschette 8. They produce in addition to the already described deformations of the individual cuff rings 10, 11, 12 and folds, which observed through the glass window 7 from the outside can be.

In Fig. 2 ist eine Schnittansicht durch einen Abschnitt einer Waschmaschine mit einer Ausführungsform einer erfindungsgemäßen Faltenbalgmanschette 20 dargestellt. Sie setzt sich zusammen aus einem von außen sichtbaren inneren Manschettenkranz 21 und einer nicht sichtbaren Außenfalte aus einem mittleren Manschettenkranz 22 und einem äußeren Manschettenkranz 23. Der mittlere Manschettenkranz 22 verbindet den äußeren 23 und den inneren Manschettenkranz 21 entlang deren freien Rändern 24, 25. Wie bekannte Manschetten ist auch die Manschette 20 über einen festen Rand 26 des inneren Manschettenkranzes 21 an einem Maschinengehäuse 1 und über einen festen Rand 27 des äußeren Manschettenkranzes 25 an einem Laugenbehälter 2 befestigt. In dem Laugenbehälter 2 ist eine herkömmliche Trommel 3 angeordnet, deren Trommelhals 13 in der Nähe des freien Randes 24 des inneren Manschettenkranzes 21 angeordnet ist.In Fig. 2 a sectional view through a portion of a washing machine with an embodiment of a Faltenbalgmanschette 20 according to the invention is shown. It is composed of an externally visible inner collar 21 and an invisible outer fold of a middle collar 22 and an outer collar 23. The middle collar 22 connects the outer 23 and the inner collar 21 along their free edges 24, 25 Known cuffs 20 and the sleeve 20 is attached via a fixed edge 26 of the inner sleeve ring 21 to a machine housing 1 and a fixed edge 27 of the outer sleeve ring 25 to a tub 2. In the tub 2, a conventional drum 3 is arranged, the drum neck 13 is disposed in the vicinity of the free edge 24 of the inner sleeve ring 21.

Am freien Rand 24 am Übergang des inneren Manschettenkranzes 21 zum mittleren Manschettenkranz 22 ist eine Verdickung in der Form einer auf den Trommelhals 13 hin gerichteten Nase 28 angeformt. Sie geht am mittleren Manschettenkranz 22 über in einen Gelenkabschnitt 29, der durch eine Materialverjüngung des Querschnitts des mittleren Manschettenkranzes 22 gebildet ist. Daran schließt sich eine Wulst 30 an, die als Materialverdickung ausgebildet ist.At the free edge 24 at the transition of the inner sleeve collar 21 to the middle collar ring 22, a thickening in the form of a directed towards the drum neck 13 nose 28 is formed. It goes on the middle collar 22 in a joint portion 29, which by a material taper of the cross section of the middle cuff ring 22 is formed. This is followed by a bead 30, which is formed as a material thickening.

Die Nase 28 bildet ein Versteifungselement am inneren Manschettenkranz 21, die ihn zwischen sich und seiner Befestigung am Maschinengehäuse 1 einfasst. Sie verläuft gleichmäßig am inneren Manschettenkranz 21 entlang der Umfangslinie der Beschickungsöffnung und ist als Teil des freien Randes 24 ausgebildet. Sie stellt so eine ringförmige Versteifung des freien Randes 24 dar. Sie dehnt sich auf der einer Ansichtsfläche abgewandten Seite des inneren Manschettenkranzes 21 aus. Damit ist sie für einen Benutzer nicht ohne weiteres zu erkennen, womit die Faltenbalgmanschette 20 für ihn optisch einen herkömmlichen Eindruck vermittelt.The nose 28 forms a stiffening element on the inner collar ring 21, which encloses it between itself and its attachment to the machine housing 1. It runs uniformly on the inner collar 21 along the circumferential line of the feed opening and is formed as part of the free edge 24. It thus represents an annular stiffening of the free edge 24. It expands on the side facing away from a viewing surface side of the inner collar ring 21. Thus, it is not readily apparent to a user, with which the bellows cuff 20 optically conveys a conventional impression to him.

Die an die Nase 28 anschließende Folge von Gelenkabschnitt 29 und Wulst 30 sind am mittleren Manschettenkranz 22 und daher ebenfalls in einem dem Benutzer gegenüber verdeckten Bereich angeordnet. Auch sie verlaufen gleichförmig entlang der gesamten Umfangslinie der Beschickungsöffnung. Der Gelenkabschnitt 29 stellt einen besonders nachgiebigen Bereich der Außenfalte dar, der daher in einem gegenüber mechanischen Beanspruchungen durch rotierende Teile der Waschmaschine oder durch Wäschestücke geschützt in der Außenfalte und zwischen der Nase 28 und der Wulst 30 angeordnet ist.The subsequent to the nose 28 sequence of joint portion 29 and bead 30 are disposed on the middle collar ring 22 and therefore also in a user concealed area. They also run uniformly along the entire circumference of the feed opening. The hinge portion 29 is a particularly resilient portion of the outer fold, which is therefore in a relation to mechanical stresses by rotating parts of the washing machine or by laundry protected in the outer fold and between the nose 28 and the bead 30 is arranged.

Sowohl die Nase 28 als auch die Wulst 30 dagegen bieten aufgrund ihrer Materialdicke einer Verformungskraft Widerstand. Die Nase 28, der Gelenkabschnitt 29 und die Wulst 30 zusammen definieren daher gezielt einen Bereich in der Außenfalte, der sich bei einer vom Laugenbehälter 2 auf die Faltenbalgmanschette 20 aufgebrachten Kraft verformt, während die übrigen Bereiche daran zunächst weitgehend unbeteiligt bleiben. Bei einer ansteigenden Krafteinwirkung verformt sich aufgrund ihrer Querschnittsform und ihrer gegenüber dem inneren Manschettenkranz 21 größeren Länge zunächst die Außenfalte, in dem der innere 23 gegenüber dem mittleren Manschettenkranz 22 entlang des freien Randes 25 knickt und sich der äußere 23 und/oder der mittlere Manschettenkranz 22 verfalten. Gegen eine dadurch bedingte Faltung schützt den inneren Manschettenkranz 21 vor allem die Nase 28, die sich einer Faltung versteifend entgegenstellt.Both the nose 28 and the bead 30 on the other hand offer resistance to deformation due to their material thickness. The nose 28, the joint portion 29 and the bead 30 together therefore specifically define an area in the outer fold, which deforms in a force applied by the tub 2 on the Faltenbalgmanschette 20 force, while the other areas remain initially largely uninvolved. Due to their cross-sectional shape and their greater length relative to the inner sleeve rim 21, the outer fold in which the inner 23 buckles along the free edge 25 with respect to the middle sleeve ring 22 and the outer 23 and / or the middle sleeve ring 22 deforms with an increasing force pleating. Against a consequent folding protects the inner cuff 21 mainly the nose 28, which opposes a convolution stiffening.

Erst bei einer Belastungsspitze, nämlich dann, wenn der Laugenbehälter 2 soweit ausgelenkt wird, dass der Trommelhals 13 am freien Rand 24 anläuft und diesen in Richtung auf das Maschinengehäuse 1 hin drängt, erfährt der innere Manschettenkranz 21 eine Stauchung, die zu einer Wellenbildung seiner Ansichtsfläche führt. Erfolgt das Anlaufen des Trommelhalses 13 am freien Rand 24 infolge einer starken Taumelbewegung des Laugenbehälters 2, so dass der Trommelhals 13 nur in einem Teilbereich seines Umfangs mit dem freien Rand 24 in Kontakt tritt, gibt die ringförmig verlaufende Nase 28 in dem entsprechenden Bereich aufgrund ihrer elastischen Verformbarkeit nach und ermöglicht ein Ausweichen der Faltenbalgmanschette 20 und mithin eine Verformung des inneren Manschettenkranzes 21.Only at a load peak, namely when the tub 2 is deflected so far that the drum neck 13 starts at the free edge 24 and urges toward the machine housing 1, the inner sleeve ring 21 experiences a compression, which leads to a wave formation of its surface leads. If the start of the drum neck 13 at the free edge 24 due to a strong wobbling motion of the tub 2, so that the drum neck 13 comes into contact with the free edge 24 only in a portion of its circumference, gives the annular nose 28 in the corresponding area due to their elastic deformability and allows evasion of the Faltenbalgmanschette 20 and thus a deformation of the inner cuff ring 21.

Die Versteifungswirkung kann auch dadurch erreicht werden, dass in den beschriebenen verdickten Bereichen 28 und 30 jeweils oder wahlweise ein flexibler Metallring an- oder einvulkanisiert ist. Dies kann auch zusätzlich bei einer Materialverdickung vorgesehen sein.The stiffening effect can also be achieved by the fact that in the described thickened regions 28 and 30 each or optionally a flexible metal ring is vulcanized or vulcanized. This can also be provided in addition to a material thickening.

Der freie Rand 24 ist durch das Anlaufen des rotierenden Trommelhalses 13 erheblichem Verschleiß ausgesetzt. Stellt sich die Nase 28 einer Anlaufkraft des Trommelhalses 13 versteifend entgegen, so wird der Verschleiß erhöht. Um keine verschleißbedingte Undichtigkeit der Faltenbalgmanschette 20 zu bekommen, ist die Dimensionierung der Nase 28 zusätzlich gegen Durchreiben während der normalen Lebensdauer der Waschmaschine ausgelegt.The free edge 24 is exposed by the start of the rotating drum neck 13 considerable wear. If the nose 28 stiffening counteracts a starting force of the drum neck 13, the wear is increased. In order to avoid any wear-related leakage of the bellows sleeve 20, the dimensioning of the nose 28 is additionally designed against rubbing during the normal life of the washing machine.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

  • 1. Maschinengehäuse1. Machine housing
  • 2. Laugenbehälter2. Lye container
  • 3. Wasch- und Schleudertrommel3. Washing and centrifugal drum
  • 4. Ablaufpumpe4. drain pump
  • 5. Lager des Laugenbehälters 2 und der Trommel 35. Storage of the tub 2 and the drum. 3
  • 6. Beschickungsöffnung6. Feed opening
  • 7. gläsernes Fenster7. glass window
  • 8. Manschette8. Cuff
  • 9. Faltenbalg der Manschette 89. Bellows of the cuff 8
  • 10. innerer Manschettenkranz10. inner cuff wreath
  • 11. mittlerer Manschettenkranz11. middle cuff wreath
  • 12. äußerer Manschettenkranz12. outer cuff ring
  • 13. Trommelhals13. drum neck
  • 20. Faltenbalgmanschette20. Bellows cuff
  • 21. innerer Manschettenkranz21st inner cuff wreath
  • 22. mittlerer Manschettenkranz22. middle cuff wreath
  • 23. äußerer Manschettenkranz23. outer cuff ring
  • 24. freier Rand des inneren Manschettenkranzes 2124. free edge of inner cuff ring 21
  • 25. freier Rand des äußeren Manschettenkranzes 2325. free edge of outer cuff ring 23
  • 26. fester Rand des inneren Manschettenkranzes 2126. fixed edge of the inner collar ring 21st
  • 27. fester Rand des äußeren Manschettenkranzes 2327. fixed edge of the outer sleeve collar 23
  • 28. Nase28. nose
  • 29. Gelenkabschnitt29. Joint section
  • 30. Wulst30th bead

A Abstand zwischen Maschinengehäuse 1 und Laugenbehälter 2A Distance between machine housing 1 and tub 2

D Drehachse der Trommel 3D rotation axis of the drum 3

Claims (6)

  1. Bellows collar for washing machines with a machine housing (1), a solution container (2) arranged therein, a cantilever-mounted drum (3) rotatably arranged in the solution container (2) and a frontal loading opening, wherein the bellows collar (20) comprises an inner collar ring (21), a middle collar ring (22) and an outer collar ring (23) and is sealingly fastened in the region of the loading opening not only to the machine housing (1), but also to the solution container (2) and the inner collar ring (21) is visible through a closure of the loading opening, characterised in that the visible inner collar ring (21) is associated with an annular reinforcing element, which prevents spread of deforming forces from the middle and outer collar rings (22 and 23) to the inner collar ring (21), consisting of a region (28) of thickened construction of the bellows collar (20).
  2. Bellows collar according to claim 1, characterised in that a flexible metal ring is vulcanised to or vulcanised in the bellows collar (20).
  3. Bellows collar according to claim 1 or 2, characterised in that the reinforcing element (28) is arranged in the region of the inner collar ring (21) which lies closest to the drum neck (13) of the drum (3).
  4. Bellows collar according to any one claims 1 to 3 and with a non-visible section (22, 23) of the bellows collar (20), characterised in that arranged in the non-visible section (22, 23) is a joint section (28) which promotes deforming of the bellows collar (20) in the non-visible section (22, 23).
  5. Bellows collar according to claim 4, characterised in that the joint section is formed by a thinner-material region (29) between two thickened regions (28; 30) of the bellows collar (20).
  6. Bellows collar according to claim 4 or 5, characterised in that the joint section (29) in the non-visible section (22, 23) of the bellows collar (20) is directly connected with the stiffening element.
EP04804896A 2003-12-18 2004-12-16 Bellows-type collar for washing machines Not-in-force EP1697574B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10359614A DE10359614A1 (en) 2003-12-18 2003-12-18 Bellows sleeve for washing machines
PCT/EP2004/053550 WO2005059228A2 (en) 2003-12-18 2004-12-16 Bellows-type collar for washing machines

Publications (2)

Publication Number Publication Date
EP1697574A2 EP1697574A2 (en) 2006-09-06
EP1697574B1 true EP1697574B1 (en) 2008-06-18

Family

ID=34672898

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04804896A Not-in-force EP1697574B1 (en) 2003-12-18 2004-12-16 Bellows-type collar for washing machines

Country Status (8)

Country Link
US (1) US20070277559A1 (en)
EP (1) EP1697574B1 (en)
KR (1) KR100778189B1 (en)
CN (1) CN100489181C (en)
AT (1) ATE398699T1 (en)
DE (2) DE10359614A1 (en)
ES (1) ES2308290T3 (en)
WO (1) WO2005059228A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011005889A1 (en) 2011-03-22 2012-09-27 BSH Bosch und Siemens Hausgeräte GmbH Front loading washing machine i.e. washer-dryer, for e.g. washing laundry articles, has sliding ring bridged via inlet of annular gap that lies in region of supply opening, where supply opening and discharge opening are connected via cuff
DE102011006783A1 (en) 2011-04-05 2012-10-11 BSH Bosch und Siemens Hausgeräte GmbH Front loading laundry care machine e.g. washer dryer, has rejection unit arranged in surface of radial extension or surface of side wall of laundry drum in region of opening of laundry drum to prevent accumulation of clothes in annular gap

Families Citing this family (8)

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Publication number Priority date Publication date Assignee Title
KR101217119B1 (en) * 2005-10-06 2013-01-09 삼성전자주식회사 Drum Washing Machine
DE102006043922B4 (en) * 2006-09-14 2009-12-10 Miele & Cie. Kg Bellows for a laundry treatment machine such as washing machine or washer-dryer
DE102007010214B3 (en) * 2007-02-28 2008-01-31 Miele & Cie. Kg Seal for front-loading washing machine has S-shaped cross-section with internal bracing cups
DE102007012136B4 (en) 2007-03-12 2010-07-01 Miele & Cie. Kg Bellows seal for a washing machine
RU2505634C2 (en) * 2008-12-30 2014-01-27 ЭлДжи ЭЛЕКТРОНИКС ИНК. Machine for laundry processing
KR20100129157A (en) 2009-05-28 2010-12-08 엘지전자 주식회사 Laundry machine
US8127464B2 (en) * 2009-07-31 2012-03-06 Bsh Home Appliances Corporation Front ring for a household appliance door
CN105821627B (en) * 2016-06-03 2017-09-22 康红宾 Roller washing machine observation window pad

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DE3711436C1 (en) * 1987-04-04 1988-07-21 Goetze Ag Mounting device for valve stem seals
DE3843386C2 (en) * 1988-12-23 1996-04-25 Aeg Hausgeraete Gmbh Front loading drum washing machine
DE4304009C2 (en) * 1993-02-11 1999-07-01 Miele & Cie Laundry treating appliance
DE19637206A1 (en) * 1996-09-12 1998-03-19 Bosch Siemens Hausgeraete Connecting sleeve for washing machine
IT1289393B1 (en) * 1996-09-24 1998-10-02 Electrolux Zanussi Elettrodome WASHING MACHINE OR SIMILAR WITH HORIZONTAL AXIS ROTATING BASKET
GB2382821B (en) * 2001-07-28 2005-07-27 John Herbert North Washing machine casing mounting
KR100484838B1 (en) * 2002-11-29 2005-04-22 엘지전자 주식회사 gasket of drum washer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011005889A1 (en) 2011-03-22 2012-09-27 BSH Bosch und Siemens Hausgeräte GmbH Front loading washing machine i.e. washer-dryer, for e.g. washing laundry articles, has sliding ring bridged via inlet of annular gap that lies in region of supply opening, where supply opening and discharge opening are connected via cuff
DE102011005889B4 (en) 2011-03-22 2020-07-23 BSH Hausgeräte GmbH Front loading washing machine with a cuff
DE102011006783A1 (en) 2011-04-05 2012-10-11 BSH Bosch und Siemens Hausgeräte GmbH Front loading laundry care machine e.g. washer dryer, has rejection unit arranged in surface of radial extension or surface of side wall of laundry drum in region of opening of laundry drum to prevent accumulation of clothes in annular gap

Also Published As

Publication number Publication date
DE10359614A1 (en) 2005-07-14
KR100778189B1 (en) 2007-11-22
DE502004007408D1 (en) 2008-07-31
WO2005059228A2 (en) 2005-06-30
US20070277559A1 (en) 2007-12-06
CN100489181C (en) 2009-05-20
KR20060126542A (en) 2006-12-07
EP1697574A2 (en) 2006-09-06
WO2005059228A3 (en) 2005-08-11
ATE398699T1 (en) 2008-07-15
ES2308290T3 (en) 2008-12-01
CN1894459A (en) 2007-01-10

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