EP3530793A1 - Lave-linge comprenant un syst?me d'étanchéité pour un dispositif palier d'une cuve de lavage du lave-linge - Google Patents

Lave-linge comprenant un syst?me d'étanchéité pour un dispositif palier d'une cuve de lavage du lave-linge Download PDF

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Publication number
EP3530793A1
EP3530793A1 EP19156135.6A EP19156135A EP3530793A1 EP 3530793 A1 EP3530793 A1 EP 3530793A1 EP 19156135 A EP19156135 A EP 19156135A EP 3530793 A1 EP3530793 A1 EP 3530793A1
Authority
EP
European Patent Office
Prior art keywords
tub
washing machine
bearing
bearing housing
plastic part
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
EP19156135.6A
Other languages
German (de)
English (en)
Other versions
EP3530793B1 (fr
Inventor
Damian Krawczynski
Dieter Schröder
Tom Weber
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 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 Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP3530793A1 publication Critical patent/EP3530793A1/fr
Application granted granted Critical
Publication of EP3530793B1 publication Critical patent/EP3530793B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/02—Rotary receptacles, e.g. drums

Definitions

  • the invention is in the field of washing machines, in particular so-called front loader to load front loader washing machines, with a seal assembly for washing drum storage and relates to a washing machine with a tub with a tub bottom, with a laundry drum, which is located in the tub, with a shaft journal, with the laundry drum is connected and which extends through an opening in the tub bottom, with a bearing housing for receiving a bearing assembly in which the shaft journal is rotatably mounted, with a sealing arrangement which seals the opening relative to the bearing assembly, and with a shield which the Shielding seal.
  • washing machine is generally understood to mean a laundry treatment machine which subjects laundry located in a laundry drum to treatment.
  • washing machine im thus includes, for example, both classic washing machines and so-called.
  • Waschtrockner that combine the functions of a washing machine and a tumble dryer.
  • a washing machine of the aforementioned type which has a substantially cylindrical laundry drum, which is rotatably mounted in a tub made of alkali-resistant plastic.
  • the tub has an opening in the center of its tub floor, in or behind the lye in the axial direction far away a bearing housing is arranged.
  • the bearing housing is supported by a bearing cross, which is attached to the edge of the lateral surface or directly to the bottom of the tub.
  • a shaft journal is rotatably connected thereto via a flange attached to the bottom of the laundry drum and extends through the opening of the tub base.
  • Two radial ball bearings inserted into an inner bore of the bearing housing form a bearing assembly which receives the shaft journal of the laundry drum.
  • a seal arrangement protects the lye container near radial ball bearing from wash liquor and includes an elastic radial shaft seal, which rests with a plurality of dynamically stressed sealing lips on a shaft journal side raceway.
  • the Sealing arrangement can be inserted into the inner bore of the bearing housing or in front of it opening of the storage container bottom.
  • the radial shaft sealing ring is charged with wash liquor or foreign substances, dirt particles or lint contained therein.
  • the sealing lips or the raceway can be damaged, so that wash liquor can penetrate into the bearing assembly. This can lead to premature wear and at worst to bearing damage.
  • the Vorabcanung consists of a circulating ring with a U-shaped or V-shaped outwardly open cross section, which surrounds the radial shaft seal concentrically.
  • the radial shaft sealing ring is protected from being sprinkled with washing liquor while the washing drum is rotating, thus preventing or at least reducing the penetration of foreign particles and / or washing liquor into the sealing zone.
  • the pre-shielding of the sealing arrangement can be arranged upstream of the liquor container in the axial direction.
  • the Vorableung is integrally formed on the rest of the tub base and is manufactured simultaneously with this injection molding. This is demanding in terms of production and, because of the demoulding undercuts of the tub required for the realization of the shield, requires expensive injection molds and causes a difficult removal of the tub from the injection mold.
  • an object of the invention is to provide a washing machine with a reliable shielding of the sealing arrangement for sealing the opening in the tub bottom, which is characterized by a simplified and cost-effective manufacturability.
  • the tub is produced in a simplified manner as a plastic part, the mechanical and processing properties of the or the shield forming elements / s can be optimized individually and a simple installation is possible.
  • the washing machine according to the invention is characterized by particular advantages in the production of the (plastic) tub.
  • the required according to the above-mentioned prior art the injection mold difficult to remove (demoldable) undercuts can be dispensed with.
  • the construction and design of the injection molding tools are thereby considerably simplified.
  • the geometry of the shield can be selected and optimized independently of limitations of the injection molding tool or the injection molding process, so that a particularly effective function of the shielding is achieved and the shielding effect is optimized.
  • the separately manufactured plastic part can be connected subsequently after its production cohesively, non-positively and / or positively with the tub (immediate connection with the tub) or with the bearing housing (indirect connection with the tub).
  • This results in particular advantages in the production of the tub when the plastic part is inserted in a two-component manufacturing process as initially separately prefabricated part in the injection mold and the connection between the plastic part and the tub or the bearing housing by the second injection molding process step, for example Encasing or injecting the plastic part is made.
  • This can be created particularly cost-effective, a permanent and firm connection between the plastic part and the tub or the bearing housing.
  • the plastic part consists of elastomer.
  • a first important advantage of this embodiment is the improved by the elastomer properties sealing function of the shield.
  • the arrangement is characterized by foreign particles against particularly repellent and resistant, which leads to an increase in the bearing life and thus the operating life of the washing machine according to the invention. This results in particular advantages in the production of the tub, when the elastomeric part is inserted in a two-component manufacturing process as initially separately prefabricated part in the injection mold.
  • a montagetechnisch preferred embodiment of the invention provides that the tub and / or the bearing housing has a support web with at least one recess in which at least one fitting part of the plastic part is added.
  • This refinement ensures reliable centering and a seat of the plastic part according to the specification in a particularly secure manner.
  • the fitting part may be an annular, axially extending web.
  • washing machine 1 each has a substantially cylindrical tub 2, in which a substantially cylindrical washing drum 3 is arranged rotatably mounted about a horizontal axis of rotation.
  • the tub 2 is made of alkali-resistant plastic and includes a bottom 4, which forms the rear end face (at a usually front-loading washing machine) of the tub.
  • the bottom 4 has an opening 5, behind in the axial, laugen causederferner direction in itself - for example, from the above-mentioned EP 1 514 966 B1 , to which reference is made in content - known manner, a bearing housing 8 is arranged.
  • the bearing housing 8 is of a not shown Bearing cross worn, which is connected to the tub 2 and to the bottom 4.
  • the laundry drum 3 has a flange 10 which is rotatably connected to a shaft journal 12.
  • the shaft journal 12 protrudes through the opening 5 and is received in the bearing housing 8 by a bearing assembly 13 of radial bearings, as basically in the EP 1 514 966 B1 described in detail.
  • a resilient radial shaft seal 15 with a plurality of dynamically stressed sealing lips 16, 17 and 18.
  • the sealing lip 18 is pressed by a ring spring 20 on a running surface 21 of the shaft journal 12.
  • Concentric with the radial shaft seal 15 is a shield 30 (FIG. FIG. 1 ) or 31 ( FIG. 2 ) intended.
  • the shield 30 consists of a separately manufactured plastic part 33, which has an approximately T-shaped circumferential cross-section 34.
  • the designed as a web 36 base leg of the T-shape extends into a support web 37 of the tub 2 in the region of the container bottom 4, which has a circumferential recess 38 in the form of an annular groove. In this recess formed as a fitting part 39 free end of the web 36 is fitted.
  • the lateral legs 40, 41 of the T-shape of the plastic part 33 are oriented substantially radially, wherein the radially outwardly oriented leg 40 together with the web 36 and the facing surface 42 of the tub a circumferential U-shaped, with the opening radially to outwardly facing groove or channel 43 forms, collect in the reaching into the region of the storage washing liquor or liquor splashes and are discharged around the storage around.
  • the plastic part 33 is preferably fixed in the recess 38 by positive locking 44 or by material engagement (for example by gluing). A suitable dimensioning can also realize a positive connection by a press fit.
  • shield 31 is made of an elastomer 48. It has a circumferential cross-sectional shape 50 in the manner of a slightly open "L".
  • the shorter leg 51 of the L-shape is inserted into a circumferential groove or recess 52 in the bottom 4 of the tub 2 and held there cohesively by bonding 53.
  • the cross-sectional profile free, longer leg 54 of the L-shape forms a laugen broughte flank 55 of the shield 31. This flank forms with the leg 51 and the upper surface 56 facing the bottom 4, a circumferential Abriosrinne 57, in which wash liquor and particles located therein and are derived around the bearing assembly 13 around.
  • the shield 31 is due to the elastomeric properties the plastic is flexible and yielding, which has a positive effect on the durability and durability of the shield. In addition, this allows relatively small distances to adjacent (moving) parts such as the flange 10 realize because even a local attachment of foreign particles by the flexibility of the lip 54 formed by the leg allows a non-destructive and thus life-prolonging evasion of the shield 31.
  • the shield in the 2-component manufacturing process in a common injection mold for the tub 2 is generated, which can then be overmolded with the alkali-resistant plastic (2nd component) and thereby make the injection mold is a little more complex because of the undercuts , the demolding is still facilitated by the elastic properties of the elastomer 48 and it also saves additional assembly steps, because so far no additional attachment or connection of the elastomeric member 48 with the tub 2 is required.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
EP19156135.6A 2018-02-23 2019-02-08 Lave-linge comprenant un système d'étanchéité pour un dispositif palier d'une cuve de lavage du lave-linge Active EP3530793B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018202762.5A DE102018202762A1 (de) 2018-02-23 2018-02-23 Waschmaschine mit einer Dichtanordnung für eine Lageranordnung eines Laugenbehälters der Waschmaschine

Publications (2)

Publication Number Publication Date
EP3530793A1 true EP3530793A1 (fr) 2019-08-28
EP3530793B1 EP3530793B1 (fr) 2024-09-04

Family

ID=65365830

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19156135.6A Active EP3530793B1 (fr) 2018-02-23 2019-02-08 Lave-linge comprenant un système d'étanchéité pour un dispositif palier d'une cuve de lavage du lave-linge

Country Status (3)

Country Link
EP (1) EP3530793B1 (fr)
CN (1) CN110184787A (fr)
DE (1) DE102018202762A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4422853A1 (de) * 1994-06-30 1996-01-04 Miele & Cie Lagerabdichtung für Radial-Wälzlager
DE19543571A1 (de) * 1995-11-22 1997-05-28 Bruss Dichtungstechnik Wellendichtring
DE19904584A1 (de) * 1999-02-04 2000-08-10 Bsh Bosch Siemens Hausgeraete Wäschebehandlungsmaschine
DE10133892A1 (de) * 2001-07-12 2003-01-30 Miele & Cie Dichtungssystem zur Abdichtung von zwei relativ zueinander verdrehbaren Maschinenelementen
EP1514965A2 (fr) * 2003-09-11 2005-03-16 Miele & Cie. KG Machine à laver avec dispositif d'étanchéité
EP1514966B1 (fr) 2003-09-11 2007-10-03 Miele & Cie. KG Machine à laver avec dispositif d'étanchéité
FR2927395A3 (fr) * 2008-02-07 2009-08-14 Renault Sas Bague de protection d'un joint d'etancheite dynamique entre une piece fixe et un arbre de transmission d'un groupe motopropulseur d'un vehicule automobile et groupe motopropulseur comportant une telle bague de protection
DE102014109508A1 (de) * 2014-07-08 2016-01-14 Miele & Cie. Kg Dichtungsanordnung für das Trommellager einer Waschmaschine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200444489Y1 (ko) * 2008-07-25 2009-05-15 (주)진양오일씰 드럼세탁기용 실링부재, 드럼세탁기용 스파이더 및 이를이용한 드럼세탁기의 실링구조
KR101016911B1 (ko) * 2008-09-01 2011-02-22 엘지전자 주식회사 세탁기의 회전축 실링 기구 및 그를 이용한 세탁기
CN102494138B (zh) * 2011-12-15 2014-06-18 太原重工股份有限公司 一种油膜轴承辊颈密封装置
JP3193462U (ja) * 2014-07-24 2014-10-02 Nok株式会社 洗濯機用密封装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4422853A1 (de) * 1994-06-30 1996-01-04 Miele & Cie Lagerabdichtung für Radial-Wälzlager
DE19543571A1 (de) * 1995-11-22 1997-05-28 Bruss Dichtungstechnik Wellendichtring
DE19904584A1 (de) * 1999-02-04 2000-08-10 Bsh Bosch Siemens Hausgeraete Wäschebehandlungsmaschine
DE10133892A1 (de) * 2001-07-12 2003-01-30 Miele & Cie Dichtungssystem zur Abdichtung von zwei relativ zueinander verdrehbaren Maschinenelementen
EP1514965A2 (fr) * 2003-09-11 2005-03-16 Miele & Cie. KG Machine à laver avec dispositif d'étanchéité
EP1514966B1 (fr) 2003-09-11 2007-10-03 Miele & Cie. KG Machine à laver avec dispositif d'étanchéité
FR2927395A3 (fr) * 2008-02-07 2009-08-14 Renault Sas Bague de protection d'un joint d'etancheite dynamique entre une piece fixe et un arbre de transmission d'un groupe motopropulseur d'un vehicule automobile et groupe motopropulseur comportant une telle bague de protection
DE102014109508A1 (de) * 2014-07-08 2016-01-14 Miele & Cie. Kg Dichtungsanordnung für das Trommellager einer Waschmaschine

Also Published As

Publication number Publication date
CN110184787A (zh) 2019-08-30
EP3530793B1 (fr) 2024-09-04
DE102018202762A1 (de) 2019-08-29

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