EP1297210A1 - Sealing collar - Google Patents

Sealing collar

Info

Publication number
EP1297210A1
EP1297210A1 EP01955322A EP01955322A EP1297210A1 EP 1297210 A1 EP1297210 A1 EP 1297210A1 EP 01955322 A EP01955322 A EP 01955322A EP 01955322 A EP01955322 A EP 01955322A EP 1297210 A1 EP1297210 A1 EP 1297210A1
Authority
EP
European Patent Office
Prior art keywords
sealing sleeve
sealing
clamping element
sleeve according
collar
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.)
Granted
Application number
EP01955322A
Other languages
German (de)
French (fr)
Other versions
EP1297210B1 (en
Inventor
Kai Nitschmann
Wolfgang Proppe
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
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP1297210A1 publication Critical patent/EP1297210A1/en
Application granted granted Critical
Publication of EP1297210B1 publication Critical patent/EP1297210B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • D06F37/26—Casings; Tubs
    • 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 present invention relates to a sealing collar for sealing connections in household appliances, in particular the connections between the outer drum and the front housing wall or the upper part of the tub and the cover frame in washing machines, which can be fastened with an essentially annular tensioning element.
  • Sealing sleeves are usually used for this purpose, which can be fastened by means of known tensioning or tensioning / screwing elements placed around the sleeve.
  • a sealing sleeve which forms a sealing connection between the tub of a washing machine in which the washing drum is mounted and the housing wall or the loading door.
  • the sealing sleeve is attached to the tub in such a way that it is pressed against the outer surface of the wall of the tub with an annular retaining or securing spring.
  • a disadvantage of the known sealing sleeve is that a high installation effort is required to fasten the sealing sleeve and that, due to the externally attachable and visible tensioning elements, no free configuration of the connection geometry is possible.
  • the invention is therefore based on the object to provide a sealing sleeve of the type mentioned, in which the above disadvantages are avoided, so that in addition to an improved appearance, the assembly effort is reduced, and the shape of the sections of the sealing sleeve to be fastened can be made extremely variable ,
  • This object is achieved according to the invention in that the tensioning element can be molded into the interior of the section of the sleeve to be fastened. This considerably reduces the assembly effort on site and the shape of the sealing sleeve can be designed to be extremely variable.
  • the tensioning element is also advantageously not visible from the outside.
  • the sealing sleeve advantageously has an annular channel in its interior, which is connected to the outer surface of the sealing sleeve by at least one groove. This ensures that the tensioning element has a firm and secure hold in the sealing sleeve and still has access to the tensioning element from outside at all times.
  • tensioning element preassembled in the sealing collar before the sealing collar is installed in the household appliance, as a result of which the assembly effort when inserting the sealing collar can be reduced even further.
  • the effort of preassembling the tensioning element in the sealing sleeve is advantageously eliminated if the sleeve already contains the tensioning element during injection molding.
  • FIG. 1 shows the vertical section through the door area of a front loading washing machine
  • Fig. 2 is an enlarged view of the detail in Fig. 1 of a first embodiment of the fastening area of the gasket according to the invention
  • Fig. 3 is an enlarged view of detail II in Fig. 1 of a second embodiment of the sealing sleeve according to the invention.
  • FIG. 1 The sectional view of a door area of a front loading washing machine in FIG. 1 shows a porthole door 1, consisting of a pot-like glass window 2, which is fastened in a frame 3. On the inside of the edge area of the door 1 there are sealing lips 4 and 5 in the closed position of the door, which prevent water from escaping from the interior of the washing machine located to the right of the door to the outside.
  • the door 1 is attached to a window cutout of a housing 6 of the washing machine via a hinge (not shown), which contains a rolled sheet metal collar 8 in the edge region 7 of the window.
  • the outer bead 9 of a cuff 10 is buttoned onto this sheet metal collar.
  • FIG. 2 and 3 show in an enlarged sectional view the bead 9 of the sealing sleeve 10, which has an annular channel 12 in its interior.
  • the channel 12 is connected to the outer surface of the bead 9 of the sealing collar 10 via a groove 13 or 13 and 14 arranged perpendicular to one another in FIG. 3.
  • An essentially annular clamping element 11 is molded into the annular channel 12.
  • an approximately quarter-circular recess is formed, into which a rolled-up, essentially ring-shaped collar 8 of the edge of the front cutout of the housing wall 7 that borders the door opening is inserted.
  • the sealing collar 10 is usually produced using the injection molding process.
  • a corresponding shape is designed and sprayed under high pressure with liquid and elastic material (e.g. rubber) which later hardens in a soft-elastic manner, as a result of which a precisely predetermined shape of the sealing sleeve 10 can be formed.
  • liquid and elastic material e.g. rubber
  • the mold can be equipped with a corresponding core for the later channel 12 and at least one groove 13 or 14. Then, after the injection molding material has hardened, it is possible to insert the tensioning element 11 via the groove 13 or 14 into the annular channel 12 inside the bead 9 of the sealing sleeve 10.
  • the annular clamping element 11 can also be fastened in the injection mold via an annular continuous rib or via webs attached to individual points of the annular shape.
  • the clamping element 11 is overmolded in this case, so that it and the sealing sleeve 10 form a single component and no further insertion of the clamping element 11 into the channel 12 is necessary.
  • the bead 9 of the sealing collar 10 after the injection molding does not have a continuous groove 13 for connecting the channel 12 to the outside of the sealing collar 10, but rather a plurality of individual passage openings corresponding to the shape of the retaining webs.
  • all automatically resiliently tensioning annular constructions can be used as the tensioning element 11, for example also a tensioning rope or a rubber band with higher tensile force.
  • a Ner coil spring also called “worm spring” since this maintains its spring force even after a long period of operation and thus ensures a secure seal.
  • this must first be provided with a suitable sheathing, since otherwise material of the sleeve 10 gets between the individual spring coils during injection molding, which can lead to a reduction or complete deactivation of the spring force.
  • the bead 9 is coated with the tensioning element that has already been overmolded during injection molding or pre-assembled in channel 12 after injection molding 11 only with its quarter-circular recess over the correspondingly shaped collar 8.
  • the bead 9 of the sealing collar 10 is then permanently pressed against this collar 8 by the spring force of the tensioning element 11, so that the sealing collar 10 is prevented from slipping.
  • the invention is not limited to the embodiments described here, but encompasses all conceivable geometric shapes, starting from the simple rectangle up to bulges of complicated construction.
  • the section of the sealing collar to be fastened need only be thick enough to accommodate the tensioning element inside. The object of the present invention can thus be used in almost all areas in which sealing sleeves are used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Gasket Seals (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Abstract

The invention relates to a sealing collar (10) which serves to seal connections in household appliances, in particular the connection between liquor container and front housing wall, or liquor container upper piece and cover frame in washing machines and which may be fixed by means of an essentially annular tensioning element (11). According to the invention, said tensioning element (11) may be moulded in the interior of the section (bead 9) of the sealing collar (10) to be fixed.

Description

Dichtungsmanschette gasket
Die vorliegende Erfindung betrifft eine Dichtungsmanschette zur Abdichtung von Verbindungen in Haushaltgeräten, insbesondere der Verbindungen zwischen Außentrommel und vorderer Gehäusewand bzw. Laugenbehalteroberteil und Deckrahmen in Waschmaschinen, die mit einem im wesentlichen ringförmigen Spannelement befestigbar ist.The present invention relates to a sealing collar for sealing connections in household appliances, in particular the connections between the outer drum and the front housing wall or the upper part of the tub and the cover frame in washing machines, which can be fastened with an essentially annular tensioning element.
Bei Waschmaschinen oder Waschtrocknern ist es wichtig, eine geeignete Abdichtung zwischen Außentrommel und vorderer Gehäusewand bei Frontlader- Maschinen bzw. zwischen Laugenbehalteroberteil und Deckrahmen bei Toplader- Geräten zu gewährleisten. Üblicherweise werden hierzu Dichtungsmanschetten verwendet, die mittels bekannter, um die Manschette gelegter Spann- oder Spann-/Schraubelemente befestigt werden können.For washing machines or washer-dryers, it is important to ensure a suitable seal between the outer drum and the front housing wall in the case of front-loading machines or between the upper part of the tub and the cover frame in the case of top-loading devices. Sealing sleeves are usually used for this purpose, which can be fastened by means of known tensioning or tensioning / screwing elements placed around the sleeve.
Aus der DE-OS 2 403 705 ist eine Dichtungsmanschette bekannt, die eine abdichtende Verbindung zwischen dem Laugenbehalter einer Waschmaschine, in dem die Waschtrommel gelagert ist, und der Gehäusewand bzw. der Ladetür bildet. Dabei ist die Dichtungsmanschette an dem Laugenbehalter derart befestigt, daß sie mit einer ringförmigen Halterungs- oder Sicherungsfeder gegen die Außenfläche der Wand des Laugenbehälters gedrückt wird.From DE-OS 2 403 705 a sealing sleeve is known which forms a sealing connection between the tub of a washing machine in which the washing drum is mounted and the housing wall or the loading door. The sealing sleeve is attached to the tub in such a way that it is pressed against the outer surface of the wall of the tub with an annular retaining or securing spring.
Nachteilig an der bekannten Dichtungsmanschette ist, daß ein hoher Montageaufwand zur Befestigung der Dichtungsmanschette nötig ist und daß durch die von außen anbringbaren und sichtbaren Spannelemente keine freie Ausgestaltung der Anschlußgeometrie möglich ist.A disadvantage of the known sealing sleeve is that a high installation effort is required to fasten the sealing sleeve and that, due to the externally attachable and visible tensioning elements, no free configuration of the connection geometry is possible.
Der Erfindung liegt somit die Aufgabe zugrunde, eine Dichtungsmanschette der eingangs genannten Art zu schaffen, bei der die obigen Nachteile vermieden sind, so daß neben einer verbesserten Optik der Montageaufwand reduziert wird, und die Form der zu befestigenden Abschnitte der Dichtungsmanschette äußerst variabel gestaltet werden kann. Diese Aufgabe wird gemäß der Erfindung dadurch gelöst, daß das Spannelement in das Innere des zu befestigenden Abschnitts der Manschette einformbar ist. Dadurch wird der Montageaufwand vor Ort erheblich reduziert, und die Form der Dichtungsmanschette kann äußerst variabel gestaltet werden. Vorteilhafterweise ist das Spannelement zudem nach außen hin nicht sichtbar.The invention is therefore based on the object to provide a sealing sleeve of the type mentioned, in which the above disadvantages are avoided, so that in addition to an improved appearance, the assembly effort is reduced, and the shape of the sections of the sealing sleeve to be fastened can be made extremely variable , This object is achieved according to the invention in that the tensioning element can be molded into the interior of the section of the sleeve to be fastened. This considerably reduces the assembly effort on site and the shape of the sealing sleeve can be designed to be extremely variable. The tensioning element is also advantageously not visible from the outside.
Vorteilhafterweise weist die Dichtungsmanschette in ihrem Inneren einen ringförmigen Kanal auf, der durch mindestens eine Rille mit der Außenoberfläche der Dichtungsmanschette verbunden ist. Dadurch wird gewährleistet, daß das Spannelement einen festen und sicheren Halt in der Dichtungsmanschette hat und dennoch jederzeit von außen Zugriff auf das Spannelement besteht.The sealing sleeve advantageously has an annular channel in its interior, which is connected to the outer surface of the sealing sleeve by at least one groove. This ensures that the tensioning element has a firm and secure hold in the sealing sleeve and still has access to the tensioning element from outside at all times.
Besonders vorteilhaft kann das Spannelement vor der Montage der Dichtungsmanschette im Haushaltgerät bereits in der Dichtungsmanschette vormontiert sein, wodurch der Montageaufwand beim Einsetzen der Dichtungsmanschette noch weiter reduziert werden kann.It is particularly advantageous for the tensioning element to be preassembled in the sealing collar before the sealing collar is installed in the household appliance, as a result of which the assembly effort when inserting the sealing collar can be reduced even further.
Zur Vereinfachung des Herstellungsvorgangs ist es weiterhin vorteilhaft, die Dichtungsmanschette durch Spritzgießen zu bilden.To simplify the manufacturing process, it is also advantageous to form the sealing collar by injection molding.
Der Aufwand der Vormontage des Spannelements in der Dichtungsmanschette entfällt in vorteilhafter Weise, wenn die Manschette das Spannelement beim Spritzgießen bereits enthält.The effort of preassembling the tensioning element in the sealing sleeve is advantageously eliminated if the sleeve already contains the tensioning element during injection molding.
Ist ein Wulst der Dichtungsmanschette so ausgebildet, daß es mit einem gewölbten, im wesentlichen ringförmigen Randbereich des die Türöffnung begrenzenden Endes der vorderen Gehäusewand in Eingriff kommt, so liefert das den Vorteil, daß eine hervorragend an die bisher verwendeten Waschmaschinenteile angepaßte Dichtungsmanschette geschaffen wird.If a bead of the sealing collar is designed so that it comes into engagement with a curved, essentially annular edge region of the end of the front housing wall delimiting the door opening, this provides the advantage that a sealing collar is created which is excellently adapted to the washing machine parts previously used.
Weitere Einzelheiten, Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung unter Bezugnahme auf die Zeichnungen. Darin zeigenFurther details, features and advantages of the invention will become apparent from the following description with reference to the drawings. Show in it
Fig. 1 den senkrechten Schnitt durch den Türbereich einer Frontlader- Waschmaschine, Fig. 2 eine vergrößerte Ansicht der Einzelheit in Fig. 1 von einer ersten Ausführungsform des Befestigungsbereiches der erfindungsgemäßen Dichtungsmanschette und1 shows the vertical section through the door area of a front loading washing machine, Fig. 2 is an enlarged view of the detail in Fig. 1 of a first embodiment of the fastening area of the gasket according to the invention and
Fig. 3 eine vergrößerte Ansicht der Einzelheit II in Fig. 1 von einer zweiten Ausführungsform der erfindungsgemäßen Dichtungsmanschette.Fig. 3 is an enlarged view of detail II in Fig. 1 of a second embodiment of the sealing sleeve according to the invention.
Die Schnittansicht eines Türbereichs einer Frontlader-Waschmaschine in Fig. 1 zeigt eine Bullaugen-Tür 1 , bestehend aus einem topfartigen Glasfenster 2, das in einem Rahmen 3 befestigt ist. Auf der Innenseite des Randbereiches der Tür 1 liegen in Verschlußstellung der Tür Dichtlippen 4 und 5 an, die ein Austreten von Wasser aus dem rechts der Tür gelegenen Innenraum der Waschmaschine nach außen verhindern.The sectional view of a door area of a front loading washing machine in FIG. 1 shows a porthole door 1, consisting of a pot-like glass window 2, which is fastened in a frame 3. On the inside of the edge area of the door 1 there are sealing lips 4 and 5 in the closed position of the door, which prevent water from escaping from the interior of the washing machine located to the right of the door to the outside.
Die Tür 1 ein ist über ein nicht gezeigtes Scharnier an einem Fensterausschnitt eines Gehäuses 6 der Waschmaschine befestigt, das im Randbereich 7 des Fensters einen vorgerollten Blechkragen 8 enthält. Auf diesen Blechkragen ist der äußere Wulst 9 einer Manschette 10 geknöpft. Ein in den Wulst eingelegtes Spannelement 11 , beispielsweise eine ringförmige Schraubenfeder, spannt den Wulst 9 gegen die Kehle des Blechkragens 8.The door 1 is attached to a window cutout of a housing 6 of the washing machine via a hinge (not shown), which contains a rolled sheet metal collar 8 in the edge region 7 of the window. The outer bead 9 of a cuff 10 is buttoned onto this sheet metal collar. A tensioning element 11 inserted into the bead, for example an annular helical spring, tensions the bead 9 against the throat of the sheet metal collar 8.
Die Fig. 2 und 3 zeigen in einer vergrößerten Schnittansicht den Wulst 9 der Dichtungsmanschette 10, das einen ringförmigen Kanal 12 in seinem Inneren aufweist. Der Kanal 12 ist in Fig. 2 über eine, in Fig. 3 über zwei senkrecht zueinander angeordnete Rillen 13 bzw. 13 und 14 mit der Außenoberfläche des Wulstes 9 der Dichtungsmanschette 10 verbunden. In den ringförmigen Kanal 12 ist ein im wesentlichen ringförmiges Spannelement 11 eingeformt. Im Wulst 9 der Dichtungsmanschette 10 ist eine im ungefähr viertelkreisförmige Ausnehmung eingeformt, in die ein aufgerollter, im wesentlichen ringförmiger Kragen 8 des die Türöffnung begrenzenden Randes des vorderen Ausschnittes der Gehäusewand 7 eingeführt ist.2 and 3 show in an enlarged sectional view the bead 9 of the sealing sleeve 10, which has an annular channel 12 in its interior. In FIG. 2, the channel 12 is connected to the outer surface of the bead 9 of the sealing collar 10 via a groove 13 or 13 and 14 arranged perpendicular to one another in FIG. 3. An essentially annular clamping element 11 is molded into the annular channel 12. In the bead 9 of the sealing collar 10, an approximately quarter-circular recess is formed, into which a rolled-up, essentially ring-shaped collar 8 of the edge of the front cutout of the housing wall 7 that borders the door opening is inserted.
In einer Ausführungsform gemäß Fig. 3, in der der Fenster-Randbereich 7 der vorderen Gehäusewand 6 nur einen schmalen eingetulpten Rand aufweist, emp- fiehlt sich zur Abdeckung dieses Randbereiches noch eine ringförmige, den Randbereich 7 abdeckende, umlaufende Lippe 16.In an embodiment according to FIG. 3, in which the window edge region 7 of the front housing wall 6 has only a narrow, turned-in edge, there is also an annular circumferential lip 16 covering this edge area, covering the edge area 7.
Die Herstellung der Dichtungsmanschette 10 erfolgt üblicherweise über das Spritzgießverfahren. Dabei wird eine entsprechende Form ausgestaltet und unter Hochdruck mit flüssigem und elastisachem Material (z. B. Kautschuk) ausgespritzt, das später weichelastisch aushärtet, wodurch eine bis ins Detail genaue vorbestimmte Form der Dichtungsmanschette 10 gebildet werden kann.The sealing collar 10 is usually produced using the injection molding process. A corresponding shape is designed and sprayed under high pressure with liquid and elastic material (e.g. rubber) which later hardens in a soft-elastic manner, as a result of which a precisely predetermined shape of the sealing sleeve 10 can be formed.
Zum Einformen des Spannelements 11 in das Innere der Dichtungsmanschette 10 existieren prinzipiell zwei Möglichkeiten. Zum einen kann die Form mit einem entsprechenden Kern für den späteren Kanal 12 und mindestens eine Rille 13 oder 14 ausgestattet sein. Dann ist es nach Aushärten des Spritzgieß-Materials möglich, das Spannelement 11 über die Rille 13 oder 14 in den ringförmigen Kanal 12 im Inneren des Wulsts 9 der Dichtungsmanschette 10 einzuführen.In principle, there are two possibilities for molding the tensioning element 11 into the interior of the sealing collar 10. On the one hand, the mold can be equipped with a corresponding core for the later channel 12 and at least one groove 13 or 14. Then, after the injection molding material has hardened, it is possible to insert the tensioning element 11 via the groove 13 or 14 into the annular channel 12 inside the bead 9 of the sealing sleeve 10.
Alternativ dazu kann das ringförmige Spannelement 11 auch bereits in der Spritzform über eine ringförmige durchlaufende Rippe oder über an einzelnen Punkten der Ringform angebrachte Stege befestigt sein. Beim anschließenden Spritzgießen wird in diesem Fall das Spannelement 11 umspritzt, so daß dieses und die Dichtungsmanschette 10 eine einzige Komponente bilden und kein Einführen des Spannelements 11 in den Kanal 12 mehr nötig ist. Bei der Verwendung von einzelnen Stegen weist der Wulst 9 der Dichtungsmanschette 10 nach dem Spritzgießen keine durchgängige Rille 13 zur Verbindung des Kanals 12 mit der Außenseite der Dichtungsmanschette 10 auf sondern mehrere der Form der Haltestege entsprechende einzelne Durchtrittsöffnungen.As an alternative to this, the annular clamping element 11 can also be fastened in the injection mold via an annular continuous rib or via webs attached to individual points of the annular shape. During the subsequent injection molding, the clamping element 11 is overmolded in this case, so that it and the sealing sleeve 10 form a single component and no further insertion of the clamping element 11 into the channel 12 is necessary. When using individual webs, the bead 9 of the sealing collar 10 after the injection molding does not have a continuous groove 13 for connecting the channel 12 to the outside of the sealing collar 10, but rather a plurality of individual passage openings corresponding to the shape of the retaining webs.
Die Verwendung von mehreren kreisförmigen Rippen in der Spritzform dient für eine bessere Halterung des Spannelements 11. In einem solchen Fall entstehen nach dem Spritzgießen im Wulst 9 der Dichtungsmanschette 10 dementsprechend mehrere ringförmige Rillen 13 und 14.The use of a plurality of circular ribs in the injection mold serves for better holding of the clamping element 11. In such a case, a plurality of annular grooves 13 and 14 are accordingly formed in the bead 9 of the sealing collar 10 after the injection molding.
Als Spannelement 11 können prinzipiell alle selbsttätig elastisch nachspannenden ringförmigen Konstruktionen verwendet werden, etwa auch ein Spannseil oder ein Gummiband höherer Zugkraft. Besonders bevorzugt ist allerdings der Einsatz ei- ner Schraubenfeder, auch "Wurmfeder" genannt, da diese ihre Federkraft auch nach langer Betriebsdauer beibehält und somit eine sichere Abdichtung gewährleistet. Zu beachten ist, daß bei einem direkten Umspritzen einer Schraubenfeder diese zuvor mit einer geeigneten Umhüllung versehen werden muß, da ansonsten beim Spritzgießen Material der Manschette 10 zwischen die einzelnen Federwindungen gelangt, was zu einer Verminderung bzw. völligen Ausschaltung der Federkraft führen kann.In principle, all automatically resiliently tensioning annular constructions can be used as the tensioning element 11, for example also a tensioning rope or a rubber band with higher tensile force. However, the use of a Ner coil spring, also called "worm spring", since this maintains its spring force even after a long period of operation and thus ensures a secure seal. It should be noted that in the case of a direct encapsulation of a helical spring, this must first be provided with a suitable sheathing, since otherwise material of the sleeve 10 gets between the individual spring coils during injection molding, which can lead to a reduction or complete deactivation of the spring force.
In den vorgenannten Ausführungsformen, die an die üblichen Ausführungsformen des gewölbten, im wesentlichen ringförmigen Kragens 8 des die Türöffnung begrenzenden Randsabschnittes 7 der vorderen Gehäusewand 6 angepaßt sind, wird der Wulst 9 mit dem bereits beim Spritzgießen mitumspritzten oder nach dem Spritzgießen im Kanal 12 vormontierten Spannelement 11 lediglich mit seiner viertelkreisförmigen Ausnehmung über den entsprechend geformten Kragen 8 gestülpt. Durch die Federkraft des Spannelements 11 wird der Wulst 9 der Dichtungsmanschette 10 anschließend dauerhaft gegen diesen Kragen 8 gedrückt, so daß ein Verrutschen der Dichtungsmanschette 10 verhindert wird.In the aforementioned embodiments, which are adapted to the conventional embodiments of the curved, essentially annular collar 8 of the edge section 7 of the front housing wall 6 that delimits the door opening, the bead 9 is coated with the tensioning element that has already been overmolded during injection molding or pre-assembled in channel 12 after injection molding 11 only with its quarter-circular recess over the correspondingly shaped collar 8. The bead 9 of the sealing collar 10 is then permanently pressed against this collar 8 by the spring force of the tensioning element 11, so that the sealing collar 10 is prevented from slipping.
Die Erfindung beschränkt sich jedoch nicht auf die vorliegend beschriebenen Ausführungsformen, sondern umfaßt alle denkbaren geometrischen Formen, angefangen vom einfachen Rechteck bis hin zu kompliziert ausgeführten Wülsten. Der zu befestigende Abschnitt der Dichtungsmanschette muß nur dick genug sein, um das Spannelement in seinem Inneren aufzunehmen. Somit ist der Gegenstand der vorliegenden Erfindung in nahezu allen Bereichen einsetzbar, bei denen Dichtungsmanschetten verwendet werden. However, the invention is not limited to the embodiments described here, but encompasses all conceivable geometric shapes, starting from the simple rectangle up to bulges of complicated construction. The section of the sealing collar to be fastened need only be thick enough to accommodate the tensioning element inside. The object of the present invention can thus be used in almost all areas in which sealing sleeves are used.

Claims

P a t e n t a n s p r ü c h e Patent claims
1. Dichtungsmanschette (10) zur Abdichtung von Verbindungen in Haushaltgeräten, insbesondere der Verbindungen zwischen Außentrommel und vorderer Gehäusewand (6) bzw. Laugenbehalteroberteil und Deckrahmen in Waschmaschinen, die mit einem im wesentlichen ringförmigen Spannelement (11) befestigbar ist, dadurch gekennzeichnet, daß das Spannelement (11) in das Innere des zu befestigenden Abschnitts (9) der Manschette (10) einformbar ist.1. Sealing sleeve (10) for sealing connections in household appliances, in particular the connections between the outer drum and the front housing wall (6) or suds container upper part and cover frame in washing machines, which can be fastened with an essentially annular clamping element (11), characterized in that Clamping element (11) can be molded into the interior of the section (9) of the sleeve (10) to be fastened.
2. Dichtungsmanschette nach Anspruch 1 , dadurch gekennzeichnet, daß sie einen ringförmigen Kanal (12) aufweist, der durch mindestens eine Rille (13) mit der Außenoberfläche der Dichtungsmanschette (10) verbunden ist und zur Aufnahme des Spannelementes (11) geeignet ist.2. Sealing sleeve according to claim 1, characterized in that it has an annular channel (12) which is connected by at least one groove (13) to the outer surface of the sealing sleeve (10) and is suitable for receiving the tensioning element (11).
3. Dichtungsmanschette nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Spannelement (11) vor Montage der Dichtungsmanschette (10) im Haushaltgerät in der Dichtungsmanschette (10) vormontiert ist.3. Sealing sleeve according to claim 1 or 2, characterized in that the clamping element (11) is pre-assembled in the household device in the sealing sleeve (10) before assembly of the sealing sleeve (10).
4. Dichtungsmanschette nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß sie durch Spritzgießen gebildet wird.4. Sealing sleeve according to one of claims 1 to 3, characterized in that it is formed by injection molding.
5. Dichtungsmanschette nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Spannelement (11) selbsttätig elastisch nachspannbar ausgebildet ist. 5. Sealing sleeve according to one of claims 1 to 4, characterized in that the clamping element (11) is designed to be automatically resiliently retensionable.
6. Dichtungsmanschette nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das eingeformte Spannelement (11) eine Schraubenfeder ist.6. Sealing sleeve according to one of claims 1 to 5, characterized in that the molded-in clamping element (11) is a helical spring.
7. Dichtungsmanschette nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, daß das Spannelement (11) bereits beim Spritzgießen der Manschette (10) mit umspritzt wird.7. Sealing sleeve according to one of claims 4 to 6, characterized in that the clamping element (11) is already encapsulated during the injection molding of the sleeve (10).
8. Dichtungsmanschette nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß ein Wulst (9) der Dichtungsmanschette (10) mit eingeformtem Spannelement (11) so ausgebildet ist, daß es mit einem gewölbten, im wesentlichen ringförmigen Kragen (8) des die Türöffnung begrenzenden Randes der vorderen Gehäusewand (6) in Eingriff kommt. 8. Sealing sleeve according to one of claims 1 to 7, characterized in that a bead (9) of the sealing sleeve (10) with molded-in clamping element (11) is designed such that it with a curved, substantially annular collar (8) of the Door opening limiting edge of the front housing wall (6) comes into engagement.
EP01955322A 2000-06-27 2001-06-25 Sealing collar Expired - Lifetime EP1297210B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10031170A DE10031170A1 (en) 2000-06-27 2000-06-27 gasket
DE10031170 2000-06-27
PCT/EP2001/007169 WO2002000988A1 (en) 2000-06-27 2001-06-25 Sealing collar

Publications (2)

Publication Number Publication Date
EP1297210A1 true EP1297210A1 (en) 2003-04-02
EP1297210B1 EP1297210B1 (en) 2009-01-14

Family

ID=7646903

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01955322A Expired - Lifetime EP1297210B1 (en) 2000-06-27 2001-06-25 Sealing collar

Country Status (9)

Country Link
US (1) US6761049B2 (en)
EP (1) EP1297210B1 (en)
JP (1) JP2004501705A (en)
KR (1) KR100767165B1 (en)
CN (1) CN1211522C (en)
AT (1) ATE420989T1 (en)
DE (2) DE10031170A1 (en)
PL (1) PL359503A1 (en)
WO (1) WO2002000988A1 (en)

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Also Published As

Publication number Publication date
KR20030011370A (en) 2003-02-07
CN1439067A (en) 2003-08-27
DE10031170A1 (en) 2002-01-10
EP1297210B1 (en) 2009-01-14
US20030110817A1 (en) 2003-06-19
US6761049B2 (en) 2004-07-13
PL359503A1 (en) 2004-08-23
CN1211522C (en) 2005-07-20
ATE420989T1 (en) 2009-01-15
JP2004501705A (en) 2004-01-22
KR100767165B1 (en) 2007-10-15
WO2002000988A1 (en) 2002-01-03
DE50114662D1 (en) 2009-03-05

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