EP0657574A1 - Elastische Faltenbalgdichtung für eine Waschmaschine, einen Trockner oder dergleichen - Google Patents

Elastische Faltenbalgdichtung für eine Waschmaschine, einen Trockner oder dergleichen Download PDF

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Publication number
EP0657574A1
EP0657574A1 EP94203470A EP94203470A EP0657574A1 EP 0657574 A1 EP0657574 A1 EP 0657574A1 EP 94203470 A EP94203470 A EP 94203470A EP 94203470 A EP94203470 A EP 94203470A EP 0657574 A1 EP0657574 A1 EP 0657574A1
Authority
EP
European Patent Office
Prior art keywords
sealing ring
fastening flange
hard material
elastic
opening
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
EP94203470A
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English (en)
French (fr)
Other versions
EP0657574B1 (de
Inventor
Dany Marie Jozef. Debal
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.)
Nv Medibeg Sa NV
Original Assignee
Nv Medibeg Sa NV
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 Nv Medibeg Sa NV filed Critical Nv Medibeg Sa NV
Publication of EP0657574A1 publication Critical patent/EP0657574A1/de
Application granted granted Critical
Publication of EP0657574B1 publication Critical patent/EP0657574B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the invention concerns an elastic sealing ring for washing and drying machines and similar machines, for the sealing between the edge of an opening in an outer wall and a part of a door penetrating in said opening, whereby said sealing ring has a ring-shaped body and a fastening flange provided on the end thereof protruding outwards as seen from the radial direction for the fastening onto the outer wall and an elastic, deformable lip protruding inwards as seen from this radial direction which forms the actual sealing and is designed to fit up against the penetrating part of the door.
  • Washing machines usually have a drum which is mounted such that it can revolve in a tub.
  • the whole is surrounded by a housing in which the tub is fixed by means of springs and/or rubber blocks.
  • a filling opening is provided which is closed by means of a door, which is usually equipped with a tub-shaped glass part.
  • the sealing ring not only provides a sealing between this door and the outer wall, but also closes off the opening between said outer wall and the drum with its body, and therefore is fixed to the frame on the inside of the housing.
  • this sealing ring must not only provide a sealing, but must also be able to absorb vibrations both during the start-up with an unbalanced load as during different rotational speeds, it must be resistant to detergents and oils and to temperatures up to 120°C, it must be sufficiently non-abrasive and must have enough flexural strength and must reassume its original shape as much as possible after having been pressed together for a certain time.
  • the known sealing rings of good quality are made of natural or synthetic rubber.
  • rubber is a material which cannot be recycled in an economic manner.
  • the invention aims to remedy these disadvantages and to provide an elastic sealing ring for washing and drying machines and similar machines which is relatively inexpensive, which can be easily recycled and which meets the operational requirements to a great extent.
  • the outwardly protruding fastening flange is made of a hard material (for example polypropylene, a hard thermoplastic elastomer, a metal, etc.), whereas the elastic, deformable, inwardly protruding lip is made of a thermoplastic elastomer with rubber-like qualities, which forms a whole with the hard material of the fastening flange as a result of injection moulding onto or together with the hard material in one mould.
  • Thermoplastic elastomers are known as such. They are described among others by G. Halber & Schroeder in "Thermoplastic Elastomers - A Comprehensive Review” (Hanser Publisher Kunststoff (1987)).
  • the first-mentioned elastomers must be used for the lip. Thanks to their mechanical qualities they can provide a sealing, absorb the vibrations and ensure the non-abrasion. Thanks to their chemical qualities their resistance against detergents and the high temperature is ensured.
  • the thermoplastic elastomers can be easily recycled.
  • the flange made of hard material can be easily fastened to the outer wall and especially in a secure manner, for example by means of mechanical means, so that no straining ring or such must be used.
  • the sealing ring can be made lighter than with rubber because the fastening flange has a simpler shape (the complex shape, known for rubber sealings, can be omitted) and the rest of the ring can be made with a smaller thickness.
  • this sealing ring only met the operational requirements of the washing machine producers with difficulty.
  • the hard material of which the fastening flange is made can also be a thermoplastic elastomer, but with the qualities of hard plastic.
  • This hard material can also be an ordinary plastic such as polypropylene. In both cases this material is made together with the rest of the sealing ring in a mould by means of injection moulding. The hard material could even be metal.
  • the body of the sealing ring is made of thermoplastic elastomer.
  • the invention also concerns a washing or drying machine or the like which has an outer wall which is provided with an opening, a door with a part which, in closed position, has penetrated in the opening, and a sealing ring which provides the sealing between the edge of the opening and the penetrated part of the door and which is characterized in that the sealing ring is a ring according to any of the previous embodiments, in that the fastening flange of hard material is fixed around the opening to the outer wall so that the elastic, deformable lip is situated in or opposite the opening.
  • the fastening flange of hard material can be fastened on the inside as well as on the outside of the outer wall.
  • the fastening flange of hard material which is fastened against the outer wall forms an angle with the body which is different from the angle in the case where the sealing ring is not mounted so that the lip, which forms an angle with this fastening flange, also forms another angle with the body after the mounting of the sealing ring than before the mounting, and is put under an elastic strain in relation to the body after the mounting.
  • the elastic sealing ring 1 represented in the figures consists of a ring-shaped body 2 and, on an end thereof, an elastic, deformable lip 3 on the one hand, and a fastening flange 4 made of hard material on the other hand.
  • the lip 3 sticks inside in a slanting manner as seen from the radial direction in relation to the body 2 and it sticks outside in a slanting manner as seen from the axial sense in relation to said body 2, whereas the fastening flange 4 forms an angle of approximately 90° with the lip 3, and sticks outside in a slanting manner in relation to the body 2 as seen from both the radial and the axial sense.
  • the end of the body 2 which is turned away from the lip 3 is, as seen axially from the outside, bent twice over 180 degrees, once towards the opposite end, and again in the opposite sense.
  • the body 2 and the lip 3 are made of a thermoplastic elastomer with rubber-like qualities, whereas the fastening flange 4 is made of hard material.
  • thermoplastic elastomer an elastomer which has practically the same qualities as rubber and which meets the requirements for washing machines. Not only must the elastomer be able to absorb vibrations, it must also be resistant to temperatures of up to 120°C and to detergents and oils. It must be sufficiently non-abrasive and have a large flexural strength. After having been pressed together or having been deformed for a length of time, it must reassume its original position as well as possible when released again.
  • the hard material for the fastening flange 4 is also a thermoplastic elastomer, but with the qualities of hard plastic.
  • this hard material is an ordinary plastic, in particular a thermoplastic synthetic such as polypropylene.
  • thermoplastic elastomer with rubber-like qualities and the hard material are made of one piece through injection moulding in one and the same mould.
  • the hard material is metal.
  • the thermoplastic elastomer with rubber-like qualities was injected onto this metal, which was provided in the mould, through injection moulding.
  • thermoplastic elastomer with rubber-like qualities of the body 2 and the lip 3 form one whole with the hard material of the fastening flange 4.
  • Figures 3 to 5 represent a part of a washing machine of what is called the "front loader” type, in which the sealing ring 1 is mounted.
  • This washing machine contains in the usual manner a drum 5 which is mounted in a rotatable manner around a horizontal shaft in a tub 6.
  • This tub 6 is surrounded by a housing of which a part of the outer wall is represented in figures 3 to 5, namely a part of a front panel 7.
  • the tub 6 is suspended in this housing by means of springy elements which for clarity's sake are not represented in the figures.
  • the front panel 7 is provided with a round filling opening 8 which can be shut off by means of a door 9 which is fixed on the outside of the front panel 7 by means of hinges.
  • This door 9 consists of a metal ring 10 and a glass 11 mounted therein with a tub-shaped part 12 which, when the door 9 is in closed position, sticks through the filling opening 9 and extends inside the housing.
  • the above-mentioned sealing ring 1 provides for the sealing between the front panel 7 and more in particular the edge of the filling opening 8 on the one hand, and the tub-shaped part 12 on the other hand.
  • the fastening flange 4 is fastened mechanically to the edge of the filling opening 8 so that the lip 2 is directed forward in a slanting manner and the body 2 is situated inside the housing.
  • the end of the body 2 situated inside the housing is fixed mechanically to the tub 6. With one of its bends over 180°, this body 2 is situated inside the opening in the tub 6, situated opposite the filling opening 8 in the front panel 7, practically against the rotatable drum 5.
  • the fastening flange 4 is fastened on the outside, i.e. on the front side of the front panel 7.
  • This flange 4 is provided with taps 14 on its back which fit through the openings 15 which are provided next to the filling opening 8 in the front panel 7.
  • the ends of the taps 14 are flattened on the inside of the front panel 7, for example by means of a warmed stamp, so that these taps so to say form rivets with which the fastening flange 4 is securely fastened to the front panel 7.
  • the embodiment represented in figure 5 differs from the above-described embodiment in that the fastening flange 4 is fastened against the inside of the front panel 7. Also in this case, the fastening flange 4 is provided with taps 14, but on the front side. Moreover, these taps 14 are threaded. They stick through the openings 15 in the front panel 7, and on the front side of this front panel 7, nuts 16 are screwed on the taps 14.
  • the sealing ring 1 is less expensive and easier to recycle than a rubber ring.
  • the part 2,3 made of this material has the same qualities as a rubber ring and has similar or even better mechanical and chemical qualities.
  • the thickness of the body 2 may be smaller than when rubber is used, so that partly due to the simpler shape of the fastening flange 4, the sealing ring 1 is lighter than if it were made of rubber.
  • the fastening flange 4 is made of hard material, the fastening onto the outer wall is easy and secure. A hard on hard mounting is obtained which makes it possible to use traditional fastening methods. The use of a straining ring is unnecessary, which simplifies the mounting.
  • fastening of the fastening flange made of hard material must not necessarily be carried out in the manner as described above and represented in the drawings. Any mechanical fastening whatsoever is possible, for example by means of screws, plugs, etc.
  • sealing ring restricted to washing machines with front loading. It can also be used for washing machines with top loading or for drying machines or similar machines, and more in particular for all machines requiring a sealing between an outer wall and a door which in closed position penetrates with a part in an opening in the outer wall, and especially for such machines which have a part which is spring-mounted in a housing which for example carries a rotating drum.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Sealing Devices (AREA)
  • Gasket Seals (AREA)
  • Diaphragms And Bellows (AREA)
  • Sealing With Elastic Sealing Lips (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Bolts, Nuts, And Washers (AREA)
EP94203470A 1993-12-07 1994-11-29 Elastische Faltenbalgdichtung für eine Waschmaschine, einen Trockner oder dergleichen Expired - Lifetime EP0657574B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9301344 1993-12-07
BE9301344A BE1007858A3 (nl) 1993-12-07 1993-12-07 Elastische dichtingsring voor was- en droogmachines en gelijkaardige machines en machine voorzien van dergelijke dichtingsring.

Publications (2)

Publication Number Publication Date
EP0657574A1 true EP0657574A1 (de) 1995-06-14
EP0657574B1 EP0657574B1 (de) 1998-02-18

Family

ID=3887613

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94203470A Expired - Lifetime EP0657574B1 (de) 1993-12-07 1994-11-29 Elastische Faltenbalgdichtung für eine Waschmaschine, einen Trockner oder dergleichen

Country Status (8)

Country Link
EP (1) EP0657574B1 (de)
AT (1) ATE163309T1 (de)
BE (1) BE1007858A3 (de)
DE (2) DE69408566T2 (de)
DK (1) DK0657574T3 (de)
ES (1) ES2078202T3 (de)
GR (2) GR950300055T1 (de)
TR (1) TR28197A (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2317401A (en) * 1996-09-24 1998-03-25 Electrolux Zanussi Elettrodome Bellows seal for washing machine.
WO1998021534A1 (en) * 1996-11-09 1998-05-22 Norfrost Limited Improved gasket
US6256823B1 (en) 1999-06-29 2001-07-10 The Chardon Rubber Company Bellows for front loading washing machines
WO2002000986A1 (de) * 2000-06-27 2002-01-03 BSH Bosch und Siemens Hausgeräte GmbH Dichtungseinrichtung
KR100465715B1 (ko) * 2002-12-02 2005-01-13 엘지전자 주식회사 건조기의 투입구 실링 구조
KR100484844B1 (ko) * 2002-12-02 2005-04-22 엘지전자 주식회사 건조기의 투입구 실링 구조
KR100608259B1 (ko) 2004-08-27 2006-08-09 삼성전자주식회사 드럼세탁기
WO2006131709A1 (en) * 2005-06-08 2006-12-14 John Herbert North Improvements in and relating to washing machines
EP2565318A3 (de) * 2011-09-05 2013-10-30 Samsung Electronics Co., Ltd. Dichtung für Wäschebehandlungsvorrichtung, Wäschebehandlungsvorrichtung damit und Herstellungsverfahren und Einspritzform dafür
EP2692935A1 (de) * 2012-07-31 2014-02-05 Samsung Electronics Co., Ltd Waschmaschine mit einer Faltenbalgdichtung
ITMI20131188A1 (it) * 2013-07-16 2015-01-17 Ilpea Ind Spa Guarnizione, particolarmente per lavatrici, comprendente mezzi di aggancio rapido all¿elettrodomestico e dispositivo comprendente tale guarnizione
WO2019192774A1 (en) * 2018-04-02 2019-10-10 Arcelik Anonim Sirketi Washing machine comprising a bellow

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006054103B3 (de) * 2006-11-15 2007-12-27 Miele & Cie. Kg Frontbeschickbare Wäschebehandlungsmaschine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1585607A1 (de) * 1967-12-21 1971-05-06 Bbc Brown Boveri & Cie Waschmaschine
FR2215503A1 (de) * 1973-01-29 1974-08-23 British Domestic Appliances
EP0266239A1 (de) * 1986-09-26 1988-05-04 Ciapem Waschmaschine mit einer Manschette zur Verbindung des Laugenbehälters mit dem Gehäuse
DE8801392U1 (de) * 1987-03-05 1988-05-11 Industrie Zanussi S.P.A., Pordenone, Udine Faltenbalgdichtung für eine Waschmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1585607A1 (de) * 1967-12-21 1971-05-06 Bbc Brown Boveri & Cie Waschmaschine
FR2215503A1 (de) * 1973-01-29 1974-08-23 British Domestic Appliances
EP0266239A1 (de) * 1986-09-26 1988-05-04 Ciapem Waschmaschine mit einer Manschette zur Verbindung des Laugenbehälters mit dem Gehäuse
DE8801392U1 (de) * 1987-03-05 1988-05-11 Industrie Zanussi S.P.A., Pordenone, Udine Faltenbalgdichtung für eine Waschmaschine

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5860300A (en) * 1996-09-24 1999-01-19 Electrolux Zanussi Elettrodomestici S.P.A. Clothes washing machine or a similar appliance having improved loading duct
GB2317401B (en) * 1996-09-24 2001-03-07 Electrolux Zanussi Elettrodome Clothes washing machine having a rotary drum with a horizontal axis
GB2317401A (en) * 1996-09-24 1998-03-25 Electrolux Zanussi Elettrodome Bellows seal for washing machine.
WO1998021534A1 (en) * 1996-11-09 1998-05-22 Norfrost Limited Improved gasket
US6256823B1 (en) 1999-06-29 2001-07-10 The Chardon Rubber Company Bellows for front loading washing machines
US6862903B2 (en) 2000-06-27 2005-03-08 Bsh Bosch Und Siemens Hausgerate Gmbh Sealing device
WO2002000986A1 (de) * 2000-06-27 2002-01-03 BSH Bosch und Siemens Hausgeräte GmbH Dichtungseinrichtung
KR100484844B1 (ko) * 2002-12-02 2005-04-22 엘지전자 주식회사 건조기의 투입구 실링 구조
KR100465715B1 (ko) * 2002-12-02 2005-01-13 엘지전자 주식회사 건조기의 투입구 실링 구조
KR100608259B1 (ko) 2004-08-27 2006-08-09 삼성전자주식회사 드럼세탁기
WO2006131709A1 (en) * 2005-06-08 2006-12-14 John Herbert North Improvements in and relating to washing machines
EP2565318A3 (de) * 2011-09-05 2013-10-30 Samsung Electronics Co., Ltd. Dichtung für Wäschebehandlungsvorrichtung, Wäschebehandlungsvorrichtung damit und Herstellungsverfahren und Einspritzform dafür
EP2692935A1 (de) * 2012-07-31 2014-02-05 Samsung Electronics Co., Ltd Waschmaschine mit einer Faltenbalgdichtung
CN103572553A (zh) * 2012-07-31 2014-02-12 三星电子株式会社 具有衬垫的洗衣机
US9732459B2 (en) 2012-07-31 2017-08-15 Samsung Electronics Co., Ltd. Gasket usable with washing machine and washing machine having the same
ITMI20131188A1 (it) * 2013-07-16 2015-01-17 Ilpea Ind Spa Guarnizione, particolarmente per lavatrici, comprendente mezzi di aggancio rapido all¿elettrodomestico e dispositivo comprendente tale guarnizione
WO2019192774A1 (en) * 2018-04-02 2019-10-10 Arcelik Anonim Sirketi Washing machine comprising a bellow

Also Published As

Publication number Publication date
BE1007858A3 (nl) 1995-11-07
DK0657574T3 (da) 1998-09-28
GR3026759T3 (en) 1998-07-31
DE69408566T2 (de) 1998-08-27
ES2078202T3 (es) 1998-06-16
ES2078202T1 (es) 1995-12-16
DE69408566D1 (de) 1998-03-26
TR28197A (tr) 1996-02-13
EP0657574B1 (de) 1998-02-18
DE657574T1 (de) 1996-02-29
ATE163309T1 (de) 1998-03-15
GR950300055T1 (en) 1995-11-30

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