EP1538252A1 - Laugenbehälter aus Kunststoff für eine Wäschewaschmaschine - Google Patents

Laugenbehälter aus Kunststoff für eine Wäschewaschmaschine Download PDF

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Publication number
EP1538252A1
EP1538252A1 EP03027556A EP03027556A EP1538252A1 EP 1538252 A1 EP1538252 A1 EP 1538252A1 EP 03027556 A EP03027556 A EP 03027556A EP 03027556 A EP03027556 A EP 03027556A EP 1538252 A1 EP1538252 A1 EP 1538252A1
Authority
EP
European Patent Office
Prior art keywords
hub
tub
shell
circular
washing machine
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.)
Withdrawn
Application number
EP03027556A
Other languages
English (en)
French (fr)
Inventor
Fabio Poloni
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.)
Electrolux Home Products Corp NV
Original Assignee
Electrolux Home Products Corp 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 Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to EP03027556A priority Critical patent/EP1538252A1/de
Publication of EP1538252A1 publication Critical patent/EP1538252A1/de
Withdrawn legal-status Critical Current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
    • D06F37/261—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements
    • D06F37/262—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements made of plastic material, e.g. by injection moulding
    • 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
    • D06F37/261—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements
    • D06F37/263—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements assembled from at least two elements connected to each other; Connecting or sealing means therefor
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/26—Casings; Tubs
    • D06F37/264—Tubs provided with reinforcing structures, e.g. ribs, inserts, braces
    • 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
    • D06F37/267—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups
    • D06F37/269—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups for the bearing of the rotary receptacle

Definitions

  • the present invention relates to a new tub for a clothes washing machine, in particular a washing machine of front-loading type, said tub being made of plastic material and provided with an improved rear wall.
  • Plastic washing tubs for clothes washing machines are well known and substantially comprise a rigid structure forming a peripheral cylindrical envelope and a rear circular wall.
  • reinforcing ribs are integrally provided so as to increase the strength of the structure.
  • said ribs are arranged both circularly and radially in respect to the central portion of the rear wall.
  • a passing through hub is provided at the centre of the rear wall for supporting the bearing of a central shaft by means of which a clothes containing drum is driven into rotation within the tub.
  • Plastic washing tubs of this type are disclosed, for instance, in GB 2 261 881, EP 0 736 117 and EP 0 835 729.
  • a washing tub is produced in a two-pieces construction, i.e. a front shell and a rear shell, by injection moulding of plastic material.
  • the two shells are joined together by using any known means.
  • the hub is provided in the centre of the rear shell.
  • the hub in the rear shell is made in cast iron and is embedded in the over injected plastic material.
  • Another purpose of the present invention is to maintain the tub structure of a clothes washing machine of current type, but with a reduced and constant thickness of the rear part of the tub, so as the injection moulding cycle for producing it is correspondingly reduced.
  • a tub for washing machine is schematically shown in Figure 1, wherein a front tub shell 10 and a rear tub shell 11 are represented in a perspective exploded view.
  • the front shell 10 and the rear shell 11 are generally made by injection moulding of plastic material and are assembled by any known means, e.g. screws.
  • the rear shell 11 is substantially formed by a rigid body having a peripheral cylindrical envelope 12 and a rear circular wall 13.
  • the rear shell 11 is represented as a perspective view in Figure 2, this view being taken from the rear bottom of the tub.
  • the rear circular wall 13 shows a profile which is made of alternate sectors 14, 15, inwardly and outwardly directed, respectively, with respect to the axis of symmetry of the tub. Said sectors are developed along a circular crown, which starts from the external edge of the shell and extends to about half of the radius of the shell.
  • the shell in Figure 2 presents six sectors 14 and six sectors 15, but it is easy to understand that a different number of them may be carried out depending on the requested design of the tub.
  • each of the sectors 14, 15 is shaped with ribs 16 which run both in radial and circular direction, mutually crossing, so as the strength of the rear shell is increased.
  • the rear circular wall 13 of the shell 11 is provided with a special profile in correspondence of its internal annular portion 17 which surrounds a central hub 18 for the spindle for the drum (not represented), as disclosed here below.
  • FIG 3 shows a schematic section of the rear shell 11, taken along line A-A of Figure 2, wherein the cylindrical envelope 12 and the central hub 18 are represented.
  • the hub 18 is normally made with a core 19 of cast iron and is over injected by plastic material 20.
  • the plastic coating 20 has a constant thickness, as shown, but it ensures a stiffness comparable to that of the previous known solution, which had a bigger plastic coating. This is due thanks to the additional crown of radial ribs 21 that is provided between the hub 18 and the envelope 12. There is also to note that the radial ribs 21 are connected together with the cylindrical envelope 12 through the ribbed sectors 15 of the rear wall 13. Moreover, between the rib 21 and ribs 15 is interposed a flat ring 22 which is substantially parallel to the rear wall 13, i.e. orthogonal to the rotation axis of the rear shell 12, see Figures 3 and 4.
  • the bottom surface 22 of said circular crown of radial ribs 21 is in a plane different from those of the circular sectors 14,15. More precisely, the bottom surface 22 of said circular crown of radial ribs 21 is in a plane which is intermediate between the planes of adjacent circular sectors 14,15.
  • the thickness of the plastic material over injected on the hub (18) may be steady all around the hub and substantially even to that of the ribs (14,15,21) on the rear wall (13) of the rear shell (11).
  • the whole shell 12 is integrally moulded and its specific profile is also designed with planes and undercuts, so as its is extraction from the mould may be particularly easy and advantageous.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
EP03027556A 2003-12-01 2003-12-01 Laugenbehälter aus Kunststoff für eine Wäschewaschmaschine Withdrawn EP1538252A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03027556A EP1538252A1 (de) 2003-12-01 2003-12-01 Laugenbehälter aus Kunststoff für eine Wäschewaschmaschine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03027556A EP1538252A1 (de) 2003-12-01 2003-12-01 Laugenbehälter aus Kunststoff für eine Wäschewaschmaschine

Publications (1)

Publication Number Publication Date
EP1538252A1 true EP1538252A1 (de) 2005-06-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP03027556A Withdrawn EP1538252A1 (de) 2003-12-01 2003-12-01 Laugenbehälter aus Kunststoff für eine Wäschewaschmaschine

Country Status (1)

Country Link
EP (1) EP1538252A1 (de)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1717364A1 (de) * 2005-04-25 2006-11-02 Miele & Cie. KG Kunststofflaugenbehälter für eine Waschmaschine
EP1788137A1 (de) * 2005-11-16 2007-05-23 Miele & Cie. KG Kunststofflaugenbehälter für eine Wäschebehandlungsmaschine und Wäschebehandlungsmaschine
EP1813707A1 (de) * 2006-01-27 2007-08-01 LG Electronics Inc. Laugenbehälter für eine Waschmaschine und Herstellungsverfahren dafür
WO2007113228A1 (en) 2006-03-31 2007-10-11 Arcelik Anonim Sirketi A noise-reduced tub for a washer/dryer
US7398663B2 (en) * 2002-10-16 2008-07-15 Lg Electronics Inc. Drum-type washing machine
WO2008125974A3 (en) * 2007-04-17 2009-03-05 Indesit Co Spa Laundry washing machine
WO2008000873A3 (es) * 2006-06-22 2010-11-25 Fundación Aitiip Estructura ligera de cuba para lavadora
EP2270273A1 (de) 2009-06-29 2011-01-05 Electrolux Home Products Corporation N.V. Waschmaschine
WO2011072712A1 (de) * 2009-12-14 2011-06-23 BSH Bosch und Siemens Hausgeräte GmbH Kunststoff-bauteil, insbesondere kunststoff-laugenbehälter, und verfahren zur herstellung des kunststoff-bauteils
CN101796240B (zh) * 2007-09-07 2011-12-14 Bsh博施及西门子家用器具有限公司 塑料洗衣机桶
RU2454492C2 (ru) * 2007-02-21 2012-06-27 Мекканика Дженерале С.Р.Л. Бак стиральной машины, снабженный наружной усиливающей крышкой на нижней стенке
DE112006003872B4 (de) * 2006-04-28 2013-05-16 Lg Electronics Inc. Wanne für eine Waschmaschine
EP2671997A1 (de) * 2012-06-04 2013-12-11 Electrolux Home Products Corporation N.V. Waschmaschine mit einer Wäschebehandlungseinheit mit Direktantriebsanordnung
US10487435B2 (en) 2017-03-23 2019-11-26 Midea Group Co., Ltd. Tub for a laundry washing machine
EP3656909A1 (de) * 2018-11-22 2020-05-27 Haier Deutschland GmbH Waschmaschine
US10975513B2 (en) 2017-03-23 2021-04-13 Midea Group Co., Ltd. Tub with bearing housing insert for a laundry washing machine

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4423607A (en) * 1980-07-03 1984-01-03 Industrie Zanussi S.P.A. Wash tub of plastics material for clothes washing machines
EP0497109A1 (de) * 1991-01-30 1992-08-05 Zanussi Elettrodomestici S.p.A. Belasteter Laugebehälter für Waschmaschinen
GB2261881A (en) * 1991-11-27 1993-06-02 Zanussi Elettrodomestici Plastics washing tub
GB2272913A (en) * 1992-11-26 1994-06-01 Caradon Rolinx Tub for a top-loading washing machine
GB2333300A (en) * 1998-01-20 1999-07-21 Electrolux Zanussi Elettrodome Plastic Washtub
EP0969132A1 (de) * 1998-06-18 2000-01-05 General Domestic Appliances Limited Waschtrockner
US20020194884A1 (en) * 1999-12-15 2002-12-26 Reinhard Heyder Washing tub for a washing machine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4423607A (en) * 1980-07-03 1984-01-03 Industrie Zanussi S.P.A. Wash tub of plastics material for clothes washing machines
EP0497109A1 (de) * 1991-01-30 1992-08-05 Zanussi Elettrodomestici S.p.A. Belasteter Laugebehälter für Waschmaschinen
GB2261881A (en) * 1991-11-27 1993-06-02 Zanussi Elettrodomestici Plastics washing tub
GB2272913A (en) * 1992-11-26 1994-06-01 Caradon Rolinx Tub for a top-loading washing machine
GB2333300A (en) * 1998-01-20 1999-07-21 Electrolux Zanussi Elettrodome Plastic Washtub
EP0969132A1 (de) * 1998-06-18 2000-01-05 General Domestic Appliances Limited Waschtrockner
US20020194884A1 (en) * 1999-12-15 2002-12-26 Reinhard Heyder Washing tub for a washing machine

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7398663B2 (en) * 2002-10-16 2008-07-15 Lg Electronics Inc. Drum-type washing machine
EP1717364A1 (de) * 2005-04-25 2006-11-02 Miele & Cie. KG Kunststofflaugenbehälter für eine Waschmaschine
EP1788137A1 (de) * 2005-11-16 2007-05-23 Miele & Cie. KG Kunststofflaugenbehälter für eine Wäschebehandlungsmaschine und Wäschebehandlungsmaschine
US7765838B2 (en) 2006-01-27 2010-08-03 Lg Electronics Inc. Tub for washing machine and method of manufacturing the same
EP1813707A1 (de) * 2006-01-27 2007-08-01 LG Electronics Inc. Laugenbehälter für eine Waschmaschine und Herstellungsverfahren dafür
WO2007113228A1 (en) 2006-03-31 2007-10-11 Arcelik Anonim Sirketi A noise-reduced tub for a washer/dryer
DE112006003872B4 (de) * 2006-04-28 2013-05-16 Lg Electronics Inc. Wanne für eine Waschmaschine
WO2008000873A3 (es) * 2006-06-22 2010-11-25 Fundación Aitiip Estructura ligera de cuba para lavadora
RU2454492C2 (ru) * 2007-02-21 2012-06-27 Мекканика Дженерале С.Р.Л. Бак стиральной машины, снабженный наружной усиливающей крышкой на нижней стенке
WO2008125974A3 (en) * 2007-04-17 2009-03-05 Indesit Co Spa Laundry washing machine
CN101796240B (zh) * 2007-09-07 2011-12-14 Bsh博施及西门子家用器具有限公司 塑料洗衣机桶
EP2270273A1 (de) 2009-06-29 2011-01-05 Electrolux Home Products Corporation N.V. Waschmaschine
WO2011072712A1 (de) * 2009-12-14 2011-06-23 BSH Bosch und Siemens Hausgeräte GmbH Kunststoff-bauteil, insbesondere kunststoff-laugenbehälter, und verfahren zur herstellung des kunststoff-bauteils
EA021218B1 (ru) * 2009-12-14 2015-04-30 Бсх Бош Унд Сименс Хаусгерете Гмбх Пластмассовый бак для стирального раствора и способ литья под давлением, используемый при его изготовлении
EP2671997A1 (de) * 2012-06-04 2013-12-11 Electrolux Home Products Corporation N.V. Waschmaschine mit einer Wäschebehandlungseinheit mit Direktantriebsanordnung
WO2013182495A1 (en) * 2012-06-04 2013-12-12 Electrolux Home Products Corporation N.V. Laundry machine comprising a laundry treatment unit with direct drive arrangement
US10487435B2 (en) 2017-03-23 2019-11-26 Midea Group Co., Ltd. Tub for a laundry washing machine
US10975513B2 (en) 2017-03-23 2021-04-13 Midea Group Co., Ltd. Tub with bearing housing insert for a laundry washing machine
EP3656909A1 (de) * 2018-11-22 2020-05-27 Haier Deutschland GmbH Waschmaschine

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