EP1964961A1 - Rubber gaiter seal for a washing processing machine - Google Patents

Rubber gaiter seal for a washing processing machine Download PDF

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Publication number
EP1964961A1
EP1964961A1 EP08002902A EP08002902A EP1964961A1 EP 1964961 A1 EP1964961 A1 EP 1964961A1 EP 08002902 A EP08002902 A EP 08002902A EP 08002902 A EP08002902 A EP 08002902A EP 1964961 A1 EP1964961 A1 EP 1964961A1
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EP
European Patent Office
Prior art keywords
fold
bellows seal
elements
seal according
stabilizing elements
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Granted
Application number
EP08002902A
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German (de)
French (fr)
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EP1964961B1 (en
Inventor
Matthias Hollenhorst
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Miele und Cie KG
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Miele und Cie KG
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Publication date
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Publication of EP1964961A1 publication Critical patent/EP1964961A1/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

Definitions

  • the invention relates to a bellows seal for a laundry treatment machine with a machine housing in which a tub is provided with a rotatably mounted drum therein, and a feed opening arranged in the front of the machine housing, wherein the bellows seal is sealingly attached to both the feed opening and the tub and the bellows seal comprises a swinging fold having an inner, middle and an outer flank section, with at least one stiffening element for influencing the occurring deformation forces.
  • Such a bellows seal is from the DE 103 59 614 A1 known.
  • the unit which consists of a drum with tub, deflects when spinning due to an imbalance in the drum or it oscillates.
  • the bellows seal must join in this movement. It can come to the bellows seal between the housing and unit to a strong wrinkling. The folds can chafe through self-contact, with the result that the door seal is leaking and must be replaced.
  • annular stiffening element is associated with the inner collar ring and here in particular the central flank section of the oscillation fold, which reduces a propagation of deformation forces on the outer flank section or on the inner flank section.
  • This stiffening element is formed as a thickened region in the middle edge portion.
  • stiffening element are known, which are formed in the form of beads in the sealing ring.
  • the invention thus raises the problem of further developing a bellows seal for a laundry treatment machine in such a way that, in particular, the wear effects impairing the service life are prevented.
  • the new solution directly influences the critical area of the swinging fold.
  • the vibrating pleat geometry itself need not be optimized, but it is specifically prevented by resilient stabilizing elements that the flank sections of the swinging fold come to self-contact.
  • These stabilizing elements designed as additional elements can easily be produced in one piece with the swinging fold.
  • the stiffening elements are arranged at least partially radially between the edge sections forming a fold. These thus prevent contact of the substantially parallel flank surfaces with deformation, twist or shear stress of the bellows seal, as the unit moves. In addition, it is achieved that the stiffening elements stabilize the flank surfaces in their position and orientation.
  • the stiffening elements comprise bar-shaped stabilizing elements, which are latticed between the edge sections forming a fold are arranged. In this way, parts of the swinging fold are stabilized, whereby the drape can occur only at predetermined locations and to a limited extent.
  • the stiffening elements comprise cylindrical or sleeve-shaped stabilizing elements. These stabilizing elements are formed in the fold between the flank surfaces and arranged at a distance from each other. In this case, these stabilizing elements can be connected in the fold with each other by means of web elements in an advantageous manner.
  • the shape of the sleeve base can here be circular or polygonal, so that the sleeves can be optimally adapted to the existing space in the fold.
  • the individual sleeve-shaped stabilizing element corresponds in its diameter approximately to the width of the fold or the distance between the substantially parallel flank surfaces. With regard to its height, the sleeve-shaped stabilizing element corresponds approximately to half the fold height or half the height of the fold surface.
  • the stabilizing elements forming the stiffening elements are arranged in the fold where maximum deformation occurs in the operating state of the machine, for example in the range of the 11 to 1 o'clock position and / or laterally in the region of the 8 or 4 o'clock position. According to another embodiment, it can also be provided that the stabilizing elements can be arranged distributed substantially uniformly over the circumference, so that the formation of a fold that is as uniform as possible is formed.
  • FIG. 1 shows in the sectional side view of a laundry treatment machine 1 with a machine housing 2, in which a tub 3 is provided with a rotatably mounted drum 4 therein.
  • the tub 3 is suspended in the housing 2 by means of spring and damping means 16 swinging.
  • a feed opening 5 is arranged, wherein between the feed opening 5 and the tub 3, a bellows seal 6 is arranged. This creates the sealing transition from the tub 3 to the feed opening 5.
  • the bellows seal 6, as in the Figures 2 and 3 clearly recognizable, one Oscillating fold 7 with an inner flank section 8, a middle flank section 9 and an outer flank section 10.
  • stiffening element 11 is provided for influencing the deformation forces occurring.
  • stiffening elements 11 are arranged at least partially radially between the fold forming edge portions 8 and 9, which, in particular, when deformations, twisting or shear stresses occur, touching the substantially parallel flank surfaces 12 and 13 under stress of Prevent bellows seal 6, so that they are stabilized in their position and orientation.
  • the stiffening elements 11, as in the FIG. 2 can be seen here include sleeve-shaped stabilizing elements 14 which are formed in the fold between the flank surfaces 12 and 13.
  • the stabilizing elements 14 are arranged in the fold at a distance A from each other.
  • the stabilizing elements 14 are advantageously influenced when they are interconnected in the fold by means of the illustrated webs 15.
  • the sleeve-shaped stabilizing element 14 corresponds in diameter approximately to the width of the fold or the distance between the substantially parallel flank surfaces 12 and 13.
  • the sleeve-shaped stabilizing element 14 corresponds in height about half of the fold height or half the height of the pleat surface 12, 13.
  • FIG. 3 Figure 2 shows a computer simulation of how the bellows seal 6 deforms under load. It is clear that the oscillatory fold 7 assumes a waveform, the flank surfaces decrease in distance with each other.
  • a representation of three load cases is shown in the individual diagrams 4a, 4b and 4c. It shows the FIG. 4a a non-load case in which the individual stabilizing elements 14 are undeformed.
  • FIG. 4b a pressure loaded situation of the stabilizing elements 14 is shown, wherein in the Figure 4c a situation under train is recognizable.
  • the individual stabilizing elements 14 virtually act as indicated springs in the fold, which can be loaded on both pressure and tension. With their spring stiffness, they thus counteract the wrinkle movement when the tub swings.
  • the stabilizing elements 14 forming the stiffening elements 11 are arranged in the fold, where a maximum deformation occurs in the operating state of the machine.
  • FIG. 5 which represents a laundry treatment machine 1, in which the filling opening extends under a bevel, so that the individual flank sections 8, 9, 10 of the bellows seal 6 at the upper edge of the feed opening 5 are also inclined.
  • the maximum occurs Deformation of the bellows seal 6, so that the stabilizing elements 14 forming the stiffening elements 11 are provided in the fold in this area.
  • the stabilizing elements 14 can be arranged distributed substantially uniformly over the circumference. In some cases, it is advantageous to arrange the stabilizing elements 14 in the lateral region approximately in the 8 or 4 o'clock position.
  • the spring action of these stabilizing elements 14 causes in the radial direction that the folds remain spaced even with larger deformations.
  • the sleeve-shaped stabilizing elements 14 should correspond to the diameter of the width of the swinging fold 7 so as not to restrict the space for wrinkling.
  • the height of the stabilizing elements 14 should be in the order of half the height of the swinging fold 7.
  • the connection by means of webs 15 between the stabilizing elements 14 increases the compression of the elements, the spring action. It also prevents the elements from rubbing against each other.
  • the tubular shape of the stabilizing elements 14 has the further advantage that, for example, in deformations without strong wrinkling the restoring forces of the bellows seal 6 between oscillating unit and machine housing 2 are not too large, because this would adversely affect the stability of the laundry treatment machine 1.
  • the extensive decoupling of the movement of the oscillating unit and the machine housing 2 thus remains guaranteed.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
  • Diaphragms And Bellows (AREA)
  • Sealing Devices (AREA)

Abstract

A front-loaded washing machine has a circular hatch whose inner face is separated from the fixed drum housing flange by a flexible ring seal. The ring seal has an essentially S-shaped cross with internal bracing section consisting of a pairs of cups, each individual pair linked by a transverse member. The internal members stabilize the seal flanks against their respective faces under sheer stress caused by operation of the washing machine.

Description

Die Erfindung betrifft eine Faltenbalgdichtung für eine Wäschebehandlungsmaschine mit einem Maschinengehäuse, in dem ein Laugenbehälter mit einer darin drehbar gelagerten Trommel vorgesehen ist, und einer in der Frontseite des Maschinengehäuses angeordneten Beschickungsöffnung, wobei die Faltenbalgdichtung sowohl an der Beschickungsöffnung als auch an dem Laugenbehälter dichtend befestigt ist und die Faltenbalgdichtung eine Schwingfalte mit einem inneren, mittleren und einem äußeren Flankenabschnitt umfasst, mit wenigstens einem Versteifungselement zur Beeinflussung der auftretenden Verformungskräfte.The invention relates to a bellows seal for a laundry treatment machine with a machine housing in which a tub is provided with a rotatably mounted drum therein, and a feed opening arranged in the front of the machine housing, wherein the bellows seal is sealingly attached to both the feed opening and the tub and the bellows seal comprises a swinging fold having an inner, middle and an outer flank section, with at least one stiffening element for influencing the occurring deformation forces.

Eine derartige Faltenbalgdichtung ist aus der DE 103 59 614 A1 bekannt. Das Aggregat, welches aus einer Trommel mit Laugenbehälter besteht, lenkt beim Schleudern infolge einer Unwucht in der Trommel aus bzw. es schwingt. Dabei muss die Faltenbalgdichtung diese Bewegung mitmachen. Dabei kann es an der Faltenbalgdichtung zwischen Gehäuse und Aggregat zu einer starken Faltenbildung kommen. Die Falten können dabei durch Selbstkontakt durchscheuern, mit der Folge, dass der Türdichtring undicht wird und ausgetauscht werden muss.Such a bellows seal is from the DE 103 59 614 A1 known. The unit, which consists of a drum with tub, deflects when spinning due to an imbalance in the drum or it oscillates. The bellows seal must join in this movement. It can come to the bellows seal between the housing and unit to a strong wrinkling. The folds can chafe through self-contact, with the result that the door seal is leaking and must be replaced.

Diese Bewegung des Aggregats führt zu einer Verschiebung der Manschettenkränze gegeneinander und zwar nicht nur in horizontaler, sondern auch in vertikaler Richtung oder Verdrehrichtung. Da sie jeweils an ihren einander abgewandten Rändern am Maschinengehäuse bzw. am Laugenbehälter befestigt sind, wird eine Änderung der Längen durch eine Verdrehung des mittleren Manschettenkranzes ausgeglichen. Mit der Verdrehung verformen sich folglich auch die jeweils freien Ränder der Manschettenkränze. Diese Verformung der Faltenbalgdichtung verläuft entlang der ringförmigen Beschickungsöffnung nicht zwingend einheitlich. Denn der Laugenbehälter und die Trommel schwingen aufgrund der gefederten Aufhängung des Lagers zum einen gemeinsam in Richtung der Drehachse, womit sich der Abstand allerdings um die Beschickungsöffnung herum gleichsinnig vergrößert oder verringert. Diese Bewegung kann so stark werden, dass die Trommel mit ihrem Trommelhals an der Faltenbalgdichtung, insbesondere an dem inneren Manschettenkranz, mit dem er in etwa auf gleicher Höhe liegt, anläuft. Der Laugenbehälter und die Trommel taumeln außerdem zusammen mit der Lagerung um den Schwerpunkt oder um die Ruhelage des beladenen Aggregats im Gehäuse, so dass sich an einer Stelle der Beschickungsöffnung der Abstand vergrößert, während er sich an einer anderen Stelle, beispielsweise an einer bezüglich der Drehachse gegenüber liegenden Stelle, verringert oder eine Verdrehung der Laugenbehälteröffnung gegenüber der Gehäuseöffnung stattfindet.This movement of the unit leads to a shift of the cuff rings against each other and not only in the horizontal, but also in the vertical direction or direction of rotation. Since they are each attached to their opposite edges on the machine housing or the tub, a change in the lengths is compensated by a rotation of the middle collar. As a result, the respective free edges of the collar rings deform with the rotation. This deformation of the bellows seal along the annular feed opening is not necessarily uniform. Because the tub and the drum oscillate due to the sprung suspension of the bearing on the one hand together in the direction of the axis of rotation, whereby the distance, however, increases or decreases in the same direction around the feed opening. This movement can become so strong that the drum starts with its drum neck on the bellows seal, in particular on the inner collar ring, with which it lies approximately at the same height. The tub and drum also tumble, along with the support around the center of gravity or around the rest position of the loaded unit in the housing, so that at one point of the loading opening the distance increases, while at another location, for example at one with respect to the axis of rotation opposite point, reduced or twisting of the tub opening relative to the housing opening takes place.

Um dieser Erscheinung entgegen zu wirken, wird gemäß dem Stand der Technik vorgeschlagen, dass dem inneren Manschettenkranz und hier insbesondere dem mittleren Flankenabschnitt der Schwingungsfalte ein ringförmiges Versteifungselement zugeordnet ist, das eine Ausbreitung von Verformungskräften auf den äußeren Flankenabschnitt bzw. auf den inneren Flankenabschnitt vermindert. Dieses Versteifungselement wird dabei als ein verdickter Bereich im mittleren Flankenabschnitt ausgebildet.In order to counteract this phenomenon, it is proposed according to the prior art that an annular stiffening element is associated with the inner collar ring and here in particular the central flank section of the oscillation fold, which reduces a propagation of deformation forces on the outer flank section or on the inner flank section. This stiffening element is formed as a thickened region in the middle edge portion.

Außerdem sind Versteifungselement bekannt, die in Form von Sicken in den Dichtring eingeformt werden. Diese bekannten und beschriebenen Ausführungsformen nehmen keinen Einfluss auf die Form der Schwingfalte hinsichtlich des Faltenwurfs. So können auch insbesondere bei den bekannten Ausführungsformen die Nachteile auftreten, dass die einzelnen Flankenabschnitte einer Schwingfalte bei schwingendem Aggregat aneinander reiben, so dass es zu einer hohen Verschleißwirkung an der Faltenbalgdichtung kommt.In addition, stiffening element are known, which are formed in the form of beads in the sealing ring. These known and described embodiments have no influence on the shape of the swing fold with respect to the drape of folds. Thus, in particular, in the known embodiments, the disadvantages occur that rub the individual edge portions of a swinging crease with vibrating unit together, so that there is a high wear effect on the bellows seal.

Der Erfindung stellt sich somit das Problem eine Faltenbalgdichtung für eine Wäschebehandlungsmaschine derart weiter zu bilden, dass insbesondere die die Lebensdauer beeinträchtigenden Verschleißwirkungen unterbunden werden.The invention thus raises the problem of further developing a bellows seal for a laundry treatment machine in such a way that, in particular, the wear effects impairing the service life are prevented.

Erfindungsgemäß wird dieses Problem durch die Merkmale des Patentanspruchs 1 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den nachfolgenden Unteransprüchen.According to the invention, this problem is solved by the features of patent claim 1. Advantageous embodiments and further developments of the invention will become apparent from the following subclaims.

Die mit der Erfindung erreichbaren Vorteile bestehen darin, dass durch die neue Lösung direkt auf den kritischen Bereich der Schwingfalte Einfluss genommen wird. In dem Bereich, wo sich Flankenabschnitte aneinander legen bzw. aufeinander reiben und durchscheuern können, das heißt, die Schwingfaltengeometrie selbst muss nicht optimiert werden, sondern es wird durch federnde Stabilisierungselemente gezielt verhindert, dass die Flankenabschnitte der Schwingfalte zum Selbstkontakt kommen. Diese als Zusatzelemente ausgebildeten Stabilisierungselemente lassen sich einfach einstückig mit der Schwingfalte herstellen.The advantages that can be achieved with the invention are that the new solution directly influences the critical area of the swinging fold. In the area where flank sections abut each other or rub against each other and rub through, that is, the vibrating pleat geometry itself need not be optimized, but it is specifically prevented by resilient stabilizing elements that the flank sections of the swinging fold come to self-contact. These stabilizing elements designed as additional elements can easily be produced in one piece with the swinging fold.

Hierzu sind erfindungsgemäß die Versteifungselemente zumindest bereichsweise radial zwischen den eine Falte bildenden Flankenabschnitten angeordnet. Diese unterbinden somit ein Berühren der im Wesentlichen parallel ausgerichteten Flankenflächen bei einer Verformung, Verwindung oder Scherbeanspruchung der Faltenbalgdichtung, wenn sich das Aggregat bewegt. Zudem wird erreicht, dass die Versteifungselemente die Flankenflächen in ihrer Lage und Ausrichtung stabilisieren.For this purpose, according to the invention, the stiffening elements are arranged at least partially radially between the edge sections forming a fold. These thus prevent contact of the substantially parallel flank surfaces with deformation, twist or shear stress of the bellows seal, as the unit moves. In addition, it is achieved that the stiffening elements stabilize the flank surfaces in their position and orientation.

In einer zweckmäßigen Ausführung umfassen die Versteifungselemente stegförmige Stabilisierungselemente, die gitterförmig zwischen den eine Falte bildenden Flankenabschnitten angeordnet sind. Auf diese Weise werden Teile der Schwingfalte stabilisiert, wodurch der Faltenwurf nur an vorbestimmten Stellen und in begrenztem Maße auftreten kann.In an expedient embodiment, the stiffening elements comprise bar-shaped stabilizing elements, which are latticed between the edge sections forming a fold are arranged. In this way, parts of the swinging fold are stabilized, whereby the drape can occur only at predetermined locations and to a limited extent.

In einer anderen Ausführung umfassen die Versteifungselemente zylindrische bzw. hülsenförmige Stabilisierungselemente. Diese Stabilisierungselemente sind in der Falte zwischen den Flankenflächen eingeformt und unter einem Abstand zueinander angeordnet. Dabei können in vorteilhafter Weise diese Stabilisierungselemente in der Falte untereinander mittels Stegelementen verbunden sein. Die Form der Hülsengrundfläche kann hierbei kreisförmig oder mehreckig sein, so dass die Hülsen an den vorhandenen Platz in der Falte optimal angepasst werden können.In another embodiment, the stiffening elements comprise cylindrical or sleeve-shaped stabilizing elements. These stabilizing elements are formed in the fold between the flank surfaces and arranged at a distance from each other. In this case, these stabilizing elements can be connected in the fold with each other by means of web elements in an advantageous manner. The shape of the sleeve base can here be circular or polygonal, so that the sleeves can be optimally adapted to the existing space in the fold.

Das einzelne hülsenförmige Stabilisierungselement entspricht von seinem Durchmesser her etwa der Breite der Falte bzw. dem Abstand zwischen den im Wesentlichen parallel angeordneten Flankenflächen. Hinsichtlich ihrer Höhe entspricht das hülsenförmige Stabilisierungselement etwa der halben Faltenhöhe bzw. der halben Höhe der Faltenfläche. Die die Versteifungselemente bildenden Stabilisierungselemente sind in der Falte dort angeordnet, wo eine maximale Verformung im Betriebszustand der Maschine auftritt, beispielsweise im Bereich der 11 bis 1 Uhr Position und/oder seitlich im Bereich der 8 oder 4 Uhr Position. Gemäß einer anderen Ausführungsform kann auch vorgesehen sein, dass die Stabilisierungselemente über den Umfang im Wesentlichen gleichmäßig verteilt angeordnet sein können, damit sich ein möglichst gleichmäßiger Faltenwurf ausbildet.The individual sleeve-shaped stabilizing element corresponds in its diameter approximately to the width of the fold or the distance between the substantially parallel flank surfaces. With regard to its height, the sleeve-shaped stabilizing element corresponds approximately to half the fold height or half the height of the fold surface. The stabilizing elements forming the stiffening elements are arranged in the fold where maximum deformation occurs in the operating state of the machine, for example in the range of the 11 to 1 o'clock position and / or laterally in the region of the 8 or 4 o'clock position. According to another embodiment, it can also be provided that the stabilizing elements can be arranged distributed substantially uniformly over the circumference, so that the formation of a fold that is as uniform as possible is formed.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen rein schematisch dargestellt und wird nachfolgend näher beschrieben. Es zeigen:

Figur 1
eine geschnittene Ansicht einer Wäschebehandlungsmaschine;
Figur 2
eine perspektivische Darstellung eines Teilausschnittes einer Faltenbalgdichtung;
Figur 3
eine Faltenbalgdichtung in der Darstellung eines simulierten Belastungsfalles;
Figur 4
eine Darstellung von drei Belastungsfällen in Einzeldarstellung 4a, 4b, 4c und
Figur 5
eine weitere geschnittene Seitenansicht einer Wäschebehandlungsmaschine mit einer oben schräg angesetzten Einfüllöffnung und Faltenbalgdichtung.
An embodiment of the invention is shown purely schematically in the drawings and will be described in more detail below. Show it:
FIG. 1
a sectional view of a laundry treatment machine;
FIG. 2
a perspective view of a partial section of a bellows seal;
FIG. 3
a bellows seal in the representation of a simulated load case;
FIG. 4
a representation of three load cases in individual representations 4a, 4b, 4c and
FIG. 5
a further sectional side view of a laundry treatment machine with a top obliquely attached filling opening and bellows seal.

Die Figur 1 zeigt in der geschnittenen Seitenansicht eine Wäschebehandlungsmaschine 1 mit einem Maschinengehäuse 2, in dem ein Laugenbehälter 3 mit einer darin drehbar gelagerten Trommel 4 vorgesehen ist. Der Laugenbehälter 3 ist im Gehäuse 2 mittels Feder- und Dämpfungsmitteln 16 schwingbeweglich aufgehängt. In der Frontseite des Maschinengehäuses 2 ist eine Beschickungsöffnung 5 angeordnet, wobei zwischen der Beschickungsöffnung 5 und dem Laugenbehälter 3 eine Faltenbalgdichtung 6 angeordnet ist. Diese schafft den dichtenden Übergang von dem Laugenbehälter 3 zur Beschickungsöffnung 5. Dabei umfasst die Faltenbalgdichtung 6, wie dies in den Figuren 2 und 3 deutlich zu erkennen ist, eine Schwingfalte 7 mit einem inneren Flankenabschnitt 8, einem mittleren Flankenabschnitt 9 und einem äußeren Flankenabschnitt 10.The FIG. 1 shows in the sectional side view of a laundry treatment machine 1 with a machine housing 2, in which a tub 3 is provided with a rotatably mounted drum 4 therein. The tub 3 is suspended in the housing 2 by means of spring and damping means 16 swinging. In the front side of the machine housing 2, a feed opening 5 is arranged, wherein between the feed opening 5 and the tub 3, a bellows seal 6 is arranged. This creates the sealing transition from the tub 3 to the feed opening 5. In this case, the bellows seal 6, as in the Figures 2 and 3 clearly recognizable, one Oscillating fold 7 with an inner flank section 8, a middle flank section 9 and an outer flank section 10.

Dabei wird vorgesehen, dass wenigstens ein Versteifungselement 11 zur Beeinflussung der auftretenden Verformungskräfte vorgesehen wird. Wie aus der Figur 2 in der Perspektive zu erkennen ist, sind Versteifungselemente 11 zumindest bereichsweise radial zwischen den eine Falte bildenden Flankenabschnitten 8 und 9 angeordnet, wobei diese, insbesondere wenn Verformungen, Verwindungen oder Scherbeanspruchungen auftreten, ein Berühren der im Wesentlichen parallel ausgerichteten Flankenflächen 12 und 13 bei Beanspruchung der Faltenbalgdichtung 6 unterbinden, so dass diese in ihrer Lage und Ausrichtung stabilisiert werden.It is provided that at least one stiffening element 11 is provided for influencing the deformation forces occurring. Like from the FIG. 2 can be seen in perspective, stiffening elements 11 are arranged at least partially radially between the fold forming edge portions 8 and 9, which, in particular, when deformations, twisting or shear stresses occur, touching the substantially parallel flank surfaces 12 and 13 under stress of Prevent bellows seal 6, so that they are stabilized in their position and orientation.

Die Versteifungselemente 11, wie sie in der Figur 2 zu erkennen sind, umfassen hier hülsenförmige Stabilisierungselemente 14, die in der Falte zwischen den Flankenflächen 12 und 13 eingeformt sind. Dabei sind die Stabilisierungselemente 14 in der Falte unter einem Abstand A zueinander angeordnet. Vorteilhaft beeinflusst werden die Stabilisierungselemente 14, wenn sie in der Falte mittels der dargestellten Stege 15 untereinander verbunden sind. Wie aus der Figur 2 zu erkennen ist, entspricht das hülsenförmige Stabilisierungselement 14 von seinem Durchmesser her etwa der Breite der Falte bzw. dem Abstand zwischen den im Wesentlichen parallel angeordneten Flankenflächen 12 und 13. Hinsichtlich der Höhe entspricht das hülsenförmige Stabilisierungselement 14 von seiner Höhe her etwa der halben Faltenhöhe bzw. der halben Höhe der Faltenfläche 12, 13.The stiffening elements 11, as in the FIG. 2 can be seen here include sleeve-shaped stabilizing elements 14 which are formed in the fold between the flank surfaces 12 and 13. The stabilizing elements 14 are arranged in the fold at a distance A from each other. The stabilizing elements 14 are advantageously influenced when they are interconnected in the fold by means of the illustrated webs 15. Like from the FIG. 2 can be seen, the sleeve-shaped stabilizing element 14 corresponds in diameter approximately to the width of the fold or the distance between the substantially parallel flank surfaces 12 and 13. In terms of height, the sleeve-shaped stabilizing element 14 corresponds in height about half of the fold height or half the height of the pleat surface 12, 13.

Die Figur 3 zeigt eine Computersimulation, wie die Faltenbalgdichtung 6 sich unter Belastung verformt. Dabei wird deutlich, dass die Schwingfalte 7 eine Wellenform einnimmt, wobei die Flankenflächen hinsichtlich ihrer Distanz untereinander abnehmen. Eine Darstellung von drei Belastungsfällen ist jeweils in den Einzeldarstellungen 4a, 4b und 4c gezeigt. Dabei zeigt die Figur 4a einen Nichtbelastungsfall, in dem die einzelnen Stabilisierungselemente 14 unverformt sind. In der Figur 4b ist eine auf Druck belastete Situation der Stabilisierungselemente 14 gezeigt, wobei in der Figur 4c eine unter Zug dargestellte Situation erkennbar ist. Somit wirken die einzelnen Stabilisierungselemente 14 quasi wie angedeutete Federn in der Falte, die sowohl auf Druck als auch auf Zug belastbar sind. Mit ihrer Federsteifigkeit wirken sie somit der Faltenbewegung entgegen, wenn der Laugenbehälter schwingt. Dabei sind die die Versteifungselemente 11 bildenden Stabilisierungselemente 14 in der Falte angeordnet, wo eine maximale Verformung im Betriebszustand der Maschine auftritt. Hierzu wird auf die Figur 5 verwiesen, die eine Wäschebehandlungsmaschine 1 darstellt, bei der die Einfüllöffnung unter einer Schrägen verläuft, so dass auch die einzelnen Flankenabschnitte 8, 9, 10 der Faltenbalgdichtung 6 am oberen Rand der Beschickungsöffnung 5 unter einer Schrägen verlaufen. Insbesondere in diesem Bereich bzw. in unmittelbarer Nähe zum schrägen Abschnitt tritt die maximale Verformung der Faltenbalgdichtung 6 auf, so dass in diesem Bereich die die Versteifungselemente 11 bildenden Stabilisierungselemente 14 in der Falte vorgesehen sind. Denkbar ist aber auch, dass die Stabilisierungselemente 14 über den Umfang im Wesentlichen gleichmäßig verteilt angeordnet sein können. In manchen Fällen ist es vorteilhaft, die Stabilisierungselemente 14 im seitlichen Bereich etwa in der 8 oder 4 Uhr Position anzuordnen.The FIG. 3 Figure 2 shows a computer simulation of how the bellows seal 6 deforms under load. It is clear that the oscillatory fold 7 assumes a waveform, the flank surfaces decrease in distance with each other. A representation of three load cases is shown in the individual diagrams 4a, 4b and 4c. It shows the FIG. 4a a non-load case in which the individual stabilizing elements 14 are undeformed. In the FIG. 4b a pressure loaded situation of the stabilizing elements 14 is shown, wherein in the Figure 4c a situation under train is recognizable. Thus, the individual stabilizing elements 14 virtually act as indicated springs in the fold, which can be loaded on both pressure and tension. With their spring stiffness, they thus counteract the wrinkle movement when the tub swings. In this case, the stabilizing elements 14 forming the stiffening elements 11 are arranged in the fold, where a maximum deformation occurs in the operating state of the machine. This is on the FIG. 5 which represents a laundry treatment machine 1, in which the filling opening extends under a bevel, so that the individual flank sections 8, 9, 10 of the bellows seal 6 at the upper edge of the feed opening 5 are also inclined. Especially in this area or in the immediate vicinity of the oblique section, the maximum occurs Deformation of the bellows seal 6, so that the stabilizing elements 14 forming the stiffening elements 11 are provided in the fold in this area. It is also conceivable that the stabilizing elements 14 can be arranged distributed substantially uniformly over the circumference. In some cases, it is advantageous to arrange the stabilizing elements 14 in the lateral region approximately in the 8 or 4 o'clock position.

Im Schleuderbetrieb der Wäschebehandlungsmaschine 1 lenkt das schwingende Aggregat aufgrund von Unwucht in der Trommel 4 aus. Diese Bewegung zwischen fest stehendem Maschinengehäuse 2 und schwingendem Aggregat muss die als Dichtelement verwendete Faltenbalgdichtung 6 ausgleichen. Es kommt also zu starken Verformungen, die in der Regel eine Faltenbildung in der Schwingfalte 7, dargestellt in der Figur 3, zur Folge hat. Diese Faltenbildung kann teilweise so stark sein, dass sich die seitlichen Flankenabschnitte 8, 9, 10 der Schwingfalte 7 berühren und evtl. durchscheuern. In diesem Fall kann Wasser in das Maschinengehäuse 2 eindringen und der Kundendienst muss die Faltenbalgdichtung 6 tauschen. Um dies zu vermeiden, werden die beschriebenen hülsenförmigen Stabilisierungselemente 14 an kritischen Stellen in die Schwingfalte 7 mit eingeformt. Diese werden beim Herstellungsprozess zusammen mit der Schwingfalte 7 in axialer Richtung mit entformt. Die Federwirkung dieser Stabilisierungselemente 14 bewirkt in radialer Richtung, dass die Falten auch bei größeren Verformungen beabstandet bleiben. Die hülsenförmigen Stabilisierungselemente 14 sollten vom Durchmesser der Breite der Schwingfalte 7 entsprechen, um den Raum für die Faltenbildung nicht einzuschränken. Die Höhe der Stabilisierungselemente 14 sollte in der Größenordnung der halben Höhe der Schwingfalte 7 liegen. Die Verbindung mittels Stegen 15 zwischen den Stabilisierungselementen 14 erhöht beim Zusammendrücken der Elemente die Federwirkung. Außerdem wird so vermieden, dass die Elemente aneinander scheuern können. Die hülsenförmige Form der Stabilisierungselemente 14 hat weiterhin den Vorteil, dass zum Beispiel bei Verformungen ohne starke Faltenbildung die Rückstellkräfte der Faltenbalgdichtung 6 zwischen schwingendem Aggregat und Maschinengehäuse 2 nicht zu groß werden, denn dies würde das Standverhalten der Wäschebehandlungsmaschine 1 negativ beeinflussen. Die weitgehende Entkopplung der Bewegung des schwingenden Aggregates und des Maschinengehäuses 2 bleibt also gewährleistet.In the spin operation of the laundry treatment machine 1 deflects the vibrating unit due to imbalance in the drum 4. This movement between fixed machine housing 2 and oscillating unit must compensate for the bellows seal used as a sealing element 6. So it comes to strong deformations, which is usually a wrinkling in the swinging crease 7, shown in the FIG. 3 , entails. This wrinkling can sometimes be so strong that the lateral edge portions 8, 9, 10 of the swinging fold 7 touch and possibly chafe through. In this case, water may penetrate into the machine housing 2 and the after-sales service must exchange the bellows seal 6. To avoid this, the described sleeve-shaped stabilizing elements 14 are formed at critical points in the swinging fold 7 with. These are removed in the manufacturing process together with the swinging fold 7 in the axial direction with. The spring action of these stabilizing elements 14 causes in the radial direction that the folds remain spaced even with larger deformations. The sleeve-shaped stabilizing elements 14 should correspond to the diameter of the width of the swinging fold 7 so as not to restrict the space for wrinkling. The height of the stabilizing elements 14 should be in the order of half the height of the swinging fold 7. The connection by means of webs 15 between the stabilizing elements 14 increases the compression of the elements, the spring action. It also prevents the elements from rubbing against each other. The tubular shape of the stabilizing elements 14 has the further advantage that, for example, in deformations without strong wrinkling the restoring forces of the bellows seal 6 between oscillating unit and machine housing 2 are not too large, because this would adversely affect the stability of the laundry treatment machine 1. The extensive decoupling of the movement of the oscillating unit and the machine housing 2 thus remains guaranteed.

Claims (10)

Faltenbalgdichtung (6) für eine Wäschebehandlungsmaschine (1) mit einem Maschinengehäuse (2), in dem ein Laugenbehälter (3) mit einer darin drehbar gelagerten Trommel (4) vorgesehen ist, und einer in der Frontseite des Maschinengehäuses (2) angeordneten Beschickungsöffnung (5), wobei die Faltenbalgdichtung (6) sowohl an der Beschickungsöffnung (5) als auch an dem Laugenbehälter (3) dichtend befestigt ist und die Faltenbalgdichtung (6) eine Schwingfalte (7) mit einem inneren, mittleren und einem äußeren Flankenabschnitt (8, 9, 10) umfasst, mit wenigstens einem Versteifungselement (11) zur Beeinflussung der auftretenden Verformungskräfte,
gekennzeichnet durch
Versteifungselemente (11), die zumindest bereichsweise radial zwischen den eine Falte bildenden Flankenabschnitten (8, 9) angeordnet sind, die ein Berühren der im Wesentlichen parallel ausgerichteten Flankenflächen (12, 13) bei Verformung, Verwindung oder Scherbeanspruchung der Faltenbalgdichtung (6) unterbinden und sie diese in ihrer Lage und Ausrichtung stabilisieren.Bellows seal (6) for a laundry treatment machine (1) with a machine housing (2) in which a tub (3) with a rotatably mounted drum (4) is provided, and a in the front of the machine housing (2) arranged feed opening (5 ), wherein the bellows seal (6) is sealingly attached both to the feed opening (5) and to the tub (3) and the bellows seal (6) has a swinging fold (7) with an inner, middle and an outer flank section (8, 9 , 10), with at least one stiffening element (11) for influencing the occurring deformation forces,
marked by
Stiffening elements (11) which are arranged at least partially radially between the fold forming edge portions (8, 9), which prevent contact of the substantially parallel flank surfaces (12, 13) in deformation, twisting or shearing the bellows seal (6) and they stabilize them in their position and orientation. Faltenbalgdichtung nach Anspruch 1,
dadurch gekennzeichnet,
dass die Versteifungselemente (11) stegförmige Stabilisierungselemente umfassen, die gitterförmig zwischen den eine Falte bildenden Flankenabschnitten (8, 9) angeordnet sind.Bellows seal according to claim 1,
characterized,
in that the stiffening elements (11) comprise web-shaped stabilizing elements which are arranged in a lattice-like manner between the fold-forming edge sections (8, 9). Faltenbalgdichtung nach Anspruch 1,
dadurch gekennzeichnet,
dass die Versteifungselemente (11) hülsenförmige Stabilisierungselemente (14) umfassen.Bellows seal according to claim 1,
characterized,
in that the stiffening elements (11) comprise sleeve-shaped stabilizing elements (14). Faltenbalgdichtung nach Anspruch 2 oder 3
dadurch gekennzeichnet,
dass die Stabilisierungselemente (14) in der Falte zwischen den Flankenflächen (12, 13) eingeformt sind.Bellows seal according to claim 2 or 3
characterized,
in that the stabilizing elements (14) are formed in the fold between the flank surfaces (12, 13). Faltenbalgdichtung nach Anspruch 3,
dadurch gekennzeichnet,
dass die Stabilisierungselemente (14) in der Falte unter einem Abstand zueinander angeordnet sind.Bellows seal according to claim 3,
characterized,
that the stabilizing elements (14) are arranged in the fold at a distance to each other. Faltenbalgdichtung nach Anspruch 5,
dadurch gekennzeichnet,
dass die Stabilisierungselemente (14) in der Falte untereinander mittels Stegelementen (15) verbunden sind.Bellows seal according to claim 5,
characterized,
in that the stabilizing elements (14) in the fold are connected to one another by means of web elements (15). Faltenbalgdichtung nach Anspruch 3,
dadurch gekennzeichnet,
dass das hülsenförmige Stabilisierungselement (14) von seinem Durchmesser her etwa der Breite der Falte bzw. dem Abstand zwischen den im Wesentlichen parallel angeordneten Flankenflächen (12, 13) entspricht.Bellows seal according to claim 3,
characterized,
that the sleeve-shaped stabilizing element (14) corresponds in its diameter approximately to the width of the fold or the distance between the substantially parallel flank surfaces (12, 13). Faltenbalgdichtung nach Anspruch 3,
dadurch gekennzeichnet,
dass das hülsenförmige Stabilisierungselement (14) von seiner Höhe her etwa der halben Faltenhöhe bzw. der halben Höhe der Faltenfläche (12, 13) entspricht.Bellows seal according to claim 3,
characterized,
that the sleeve-shaped stabilizing element (14) from its height corresponds approximately to half the fold height or half the height of the fold surface (12, 13). Faltenbalgdichtung nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet,
dass die die Versteifungselemente (11) bildenden Stabilisierungselemente (14) in der Falte angeordnet sind, wo eine maximale Verformung im Betriebszustand der Wäschebehandlungsmaschine (1) auftritt.A bellows seal according to any one of claims 1 to 8,
characterized,
in that the stabilizing elements (14) forming the stiffening elements (11) are arranged in the fold, where maximum deformation occurs in the operating state of the laundry treating machine (1). Faltenbalgdichtung nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet,
dass die Stabilisierungselemente (14) über den Umfang im Wesentlichen gleichmäßig verteilt angeordnet sind.A bellows seal according to any one of claims 1 to 8,
characterized,
in that the stabilizing elements (14) are distributed substantially uniformly over the circumference.
EP08002902A 2007-02-28 2008-02-16 Rubber gaiter seal for a washing processing machine Active EP1964961B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007010214A DE102007010214B3 (en) 2007-02-28 2007-02-28 Seal for front-loading washing machine has S-shaped cross-section with internal bracing cups

Publications (2)

Publication Number Publication Date
EP1964961A1 true EP1964961A1 (en) 2008-09-03
EP1964961B1 EP1964961B1 (en) 2010-04-21

Family

ID=38859723

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EP (1) EP1964961B1 (en)
AT (1) ATE465290T1 (en)
DE (2) DE102007010214B3 (en)
ES (1) ES2341912T3 (en)

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Publication number Priority date Publication date Assignee Title
EP2692935A1 (en) * 2012-07-31 2014-02-05 Samsung Electronics Co., Ltd Washing machine comprising a gasket

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011079448A1 (en) * 2011-07-20 2013-01-24 BSH Bosch und Siemens Hausgeräte GmbH Front-loading horizontal-axis washing machine has annular gaps formed between drum and intermediate sleeve, and between drum and radial extending element
AU2014401951B2 (en) * 2013-08-30 2019-01-17 Electrolux Appliances Aktiebolag Laundry washing-drying machine and bellow for a laundry washing-drying machine

Citations (3)

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Publication number Priority date Publication date Assignee Title
DE19961463A1 (en) * 1999-12-20 2001-06-21 Bsh Bosch Siemens Hausgeraete Top-loading domestic washing machine or washer/dryer has fixing device for supporting washing liquid container within appliance housing combined with seal for top-loading opening
US20040103693A1 (en) 2002-11-29 2004-06-03 Kim Jae Kyum Gasket and washing machine using the same
US20050262879A1 (en) * 2004-06-01 2005-12-01 Lg Electronics Inc. Washing machine

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Publication number Priority date Publication date Assignee Title
DE10359614A1 (en) * 2003-12-18 2005-07-14 BSH Bosch und Siemens Hausgeräte GmbH Bellows sleeve for washing machines

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19961463A1 (en) * 1999-12-20 2001-06-21 Bsh Bosch Siemens Hausgeraete Top-loading domestic washing machine or washer/dryer has fixing device for supporting washing liquid container within appliance housing combined with seal for top-loading opening
US20040103693A1 (en) 2002-11-29 2004-06-03 Kim Jae Kyum Gasket and washing machine using the same
US20050262879A1 (en) * 2004-06-01 2005-12-01 Lg Electronics Inc. Washing machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2692935A1 (en) * 2012-07-31 2014-02-05 Samsung Electronics Co., Ltd Washing machine comprising a gasket
US9732459B2 (en) 2012-07-31 2017-08-15 Samsung Electronics Co., Ltd. Gasket usable with washing machine and washing machine having the same

Also Published As

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ES2341912T3 (en) 2010-06-29
DE502008000543D1 (en) 2010-06-02
ATE465290T1 (en) 2010-05-15
DE102007010214B3 (en) 2008-01-31
EP1964961B1 (en) 2010-04-21

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