EP2104759A1 - Machine à laver de type à tambour - Google Patents

Machine à laver de type à tambour

Info

Publication number
EP2104759A1
EP2104759A1 EP07833802A EP07833802A EP2104759A1 EP 2104759 A1 EP2104759 A1 EP 2104759A1 EP 07833802 A EP07833802 A EP 07833802A EP 07833802 A EP07833802 A EP 07833802A EP 2104759 A1 EP2104759 A1 EP 2104759A1
Authority
EP
European Patent Office
Prior art keywords
tub
bearing housing
rear end
washing machine
base
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Withdrawn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
EP07833802A
Other languages
German (de)
English (en)
Other versions
EP2104759A4 (fr
Inventor
Deok Hwan Ha
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.)
WiniaDaewoo Co Ltd
Original Assignee
Daewoo Electronics Co Ltd
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 Daewoo Electronics Co Ltd filed Critical Daewoo Electronics Co Ltd
Publication of EP2104759A1 publication Critical patent/EP2104759A1/fr
Publication of EP2104759A4 publication Critical patent/EP2104759A4/fr
Withdrawn legal-status Critical Current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
    • D06F37/30—Driving arrangements 
    • D06F37/40—Driving arrangements  for driving the receptacle and an agitator or impeller, e.g. alternatively
    • 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
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • 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 drum type washing machine, and more particularly to a drum type washing machine that includes a drive unit of improved construction.
  • a drum type washing machine is provided with a motor pulley and a drum pulley located below a tub, which has a drum rotatably disposed therein, such that a driving force of a motor is transmitted to the drum via a belt connecting the motor pulley and the drum pulley.
  • FIG. 1 is a cross-sectional view of a portion of a drive unit of a conventional drum type washing machine.
  • the conventional drum type washing machine includes a tub 10, a shaft 20 and a base 40.
  • the tub 10 which has a drum(not shown) is located outside a bearing housing 30 that has a bearing B received therein to support a shaft 20, and the base 40 is coupled to the tub 10.
  • the base 40 is formed corresponding to contours of the tub 10 and the bearing housing 30 to surround the tub 10 and the bearing housing 30. Therefore, the base 40 has a complicated shape.
  • the complicated shape results in distortion and other defections of products, which generally occur in manufacturing the components of the drive unit, including the tub 10, the bearing housing 30, and the base 40, thereby causing size and shape mismatch between the components.
  • a large degree of bending of the complicated shape causes a correspondingly large distortion, which leads to a high frequency of manufacturing defects of the components for the drive unit. Therefore, there is a need for a drum type washing machine that overcomes these problems.
  • a drum type washing machine which includes a direct connection construction wherein a shaft coupled to the drum is directly connected to a rotor to allow the driving force to be directly transmitted from the motor to the drum. Disclosure of Invention
  • the present invention is conceived to solve the problems of the conventional apparatus and corresponding manufacturing techniques as described above, and an aspect of the present invention is to provide a drum type washing machine that includes components of simplified configuration for a drive unit to reduce the frequency of manufacturing defects in the components of the drive unit. It is another aspect of the present invention to provide a drum type washing machine capable of dispersing vibration of the drive unit.
  • a drum type washing machine includes: a tub; a drum disposed inside the tub; a shaft coupled to the drum; a bearing supporting the shaft; a bearing housing supporting the bearing; and a base secured to the tub, wherein the bearing housing has a rear end protruding from a rear wall of the tub, and the tub has an extension facing an outer peripheral surface of the rear end of the bearing housing.
  • the tub extension may closely contact the outer peripheral surface of the rear end of the bearing housing.
  • a contact area between the tub and the bearing housing becomes enlarged by the area of the extension.
  • vibration is transmitted through the bearing housing allowing dispersion of the vibration.
  • the enlarged contact area provides a supporting force with respect to the bearing housing.
  • the tub extension may have a bent distal end configured to surround the rear end of the bearing housing. This configuration of the tub extension can prohibit dust or moisture from entering a gap between the bearing housing and the tub.
  • the base may have a rear end facing an outer peripheral surface of the tub extension.
  • the rear end of the base may be secured to the tub so as not to directly contact the bearing housing.
  • the rear end of the base is preferably configured to closely contact the outer peripheral surface of the tub extension so as to disperse vibration transmitted through the bearing housing while supporting the tub extension.
  • the bearing housing is preferably formed by insert-injection into the tub.
  • the drum type washing machine according to the present invention includes a base of simple configuration, resulting in reduced manufacturing costs while improving manufacturing productivity. [16] Further, since the base has a simple configuration, it is possible to reduce the frequency of manufacturing defects of the base and frequency of mismatch between components for a drive units, both of which can be caused by distortion and other defects of the base.
  • a contact area between a tub and a bearing housing becomes enlarged by the area of an extension, so that vibration transmitted through the bearing housing can be dispersed.
  • Such dispersion of vibration leads to reduction in external force transmitted to components of the washing machine, thereby preventing damage of components, such as the tub and the like.
  • the base is configured to support the extension of the tub, thereby suppressing and dispersing vibration of the drive unit.
  • FIG. 1 is a cross-sectional view of a portion of a drive unit of a conventional drum type washing machine
  • FIG. 2 is a cross-sectional view of a portion of a drive unit of a drum type washing machine according to one embodiment of the present invention. Best Mode for Carrying Out the Invention
  • FIG. 2 is a cross-sectional view of a portion of a drive unit of a drum type washing machine according to one embodiment of the present invention.
  • the drum type washing machine includes a tub 110, a shaft 120, a bearing B, a bearing housing 130, and a base 140.
  • the tub 110 is disposed in a housing (not shown) constituting the appearance of the washing machine, and has a drum 150 rotatably disposed therein to receive laundry.
  • the shaft 120 is axially connected to the drum 150 to transmit a driving force of a motor (not shown) to the drum 150.
  • the bearing B is located at an outer surface of the shaft 120, and serves to support the shaft 120 within the tub 110. Specifically, the bearing B is supported by the bearing housing 130, and the bearing housing 130 is formed on a rear wall of the tub 110.
  • the bearing housing 130 is formed by insert- injection upon injection-molding the tub 110. At this time, the bearing housing 130 may be formed by insert-injection with the same material as that of the tub 110 or different material therefrom. When the same materials are used to form both the tub
  • the tub 110 may be formed of plastics
  • the bearing housing 130 may be formed of a metallic material such as an aluminum alloy.
  • each of the bearing housing 130 and the tub 110 is preferably formed of a single material selected from plastics, metals, and metal alloys.
  • the tub 110 includes an extension 111 configured to face an outer peripheral surface
  • the 111 is configured to closely contact the end face 132 of the rear end 134 of the bearing housing 130. At this time, the extension 111 may entirely or partially contact the end face 132 of the rear end 134 of the bearing housing 130. As such, the extension 111 is configured to face both an outer periphery of the rear end 134 and the end face 132 of the rear end 134 of the bearing housing 130, so that a contact area between the tub 110 and the bearing housing 130 becomes enlarged by the area of the extension 111.
  • This arrangement allows dispersion of vibration transmitted through the bearing housing 130 while providing a supporting force with respect to the bearing housing 130. When the vibration transmitted to the bearing housing 130 is dispersed by such a configuration, the bearing housing 130 or the tub 110 can be prevented from being damaged even after a long period of use.
  • the extension 111 has a bent section 112 formed at one end to surround at least a portion of the rear end face 132 of the bearing housing 130.
  • the bent end 112 of the extension 111 can prevent dust or moisture from entering a gap between the bearing housing 130 and the tub 110.
  • the base 140 is secured to the tub 110 by means of a fastener (not shown) and the like, and has a rear end 142 shaped to conform to the shape of, and to face the outer peripheral surface of, the extension 111. It should be noted that the rear end 142 of the base 140 does not extend to cover the bent section 112 of the extension 111.
  • the rear end 142 of the base 140 is formed so as to not directly contact the bearing housing 130, but preferably to closely contact the outer peripheral surface of the extension 111 in order to disperse vibration transmitted through the bearing housing 130 while supporting the extension 111. At this time, the rear end 142 of the base 140 may partially or entirely contact the outer peripheral surface of the extension 111.
  • the bent section of the base 140 has a reduced area as compared to a conventional base 40.
  • the reduced size and altered shape of the bent section of the base 140 is advantageous since it allows convenient installation and coupling of the base 140, and simplifies the shape of the base 140, thereby improving manufacturing productivity.
  • the extension 111 of the tub 110 and the rear end of the bearing housing 130 are preferably formed at coupling portions therebetween with a protrusion and a depression, respectively. Since injected material is induced into the protrusion or the depression during injection molding, an interlocking force between the tub 111 and the bearing housing 130 is enhanced.
  • the base 140 is separately produced and coupled to a contoured section of the tub 110. Accordingly, the base 140 has a simple configuration, which reduces the frequency of manufacturing defects related to distortion and other problems of the components for the drive unit in manufacture of the washing machine. Moreover, the present invention can reduce not only the frequency of manufacturing defects in manufacture of the base 140, but also reduce frequency of mismatch with respect to the tub 110, which are caused by the distortion and other defects of the components, thereby reducing manufacturing costs while improving manufacturing productivity.

Landscapes

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

Abstract

La présente invention se rapporte à une machine à laver de type à tambour dotée d'une conception de structure de support d'unité d'entraînement simplifiée et de caractéristiques de dispersion de vibrations améliorées. La machine à laver comprend une cuve, un tambour disposé à l'intérieur de la cuve, un arbre couplé au tambour, un palier supportant l'arbre, un corps de palier supportant le palier, et une base assurée à la cuve. Le corps de palier a une extrémité arrière qui se projette en saillie depuis une paroi arrière de la cuve, et la cuve présente une extension qui est dirigée vers une surface de périphérie extérieure de l'extrémité arrière du corps de palier.
EP07833802A 2006-11-03 2007-11-01 Machine à laver de type à tambour Withdrawn EP2104759A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020060108286A KR100802539B1 (ko) 2006-11-03 2006-11-03 드럼 세탁기
PCT/KR2007/005494 WO2008054156A1 (fr) 2006-11-03 2007-11-01 Machine à laver de type à tambour

Publications (2)

Publication Number Publication Date
EP2104759A1 true EP2104759A1 (fr) 2009-09-30
EP2104759A4 EP2104759A4 (fr) 2009-12-30

Family

ID=39342946

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07833802A Withdrawn EP2104759A4 (fr) 2006-11-03 2007-11-01 Machine à laver de type à tambour

Country Status (6)

Country Link
US (1) US20100101281A1 (fr)
EP (1) EP2104759A4 (fr)
JP (1) JP4938856B2 (fr)
KR (1) KR100802539B1 (fr)
CN (1) CN101563493A (fr)
WO (1) WO2008054156A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9212447B2 (en) * 2008-07-22 2015-12-15 BSH Bosch und Siemens Hausgeräte GmbH Tub section for a washing machine
IT1399001B1 (it) * 2010-03-25 2013-03-28 Skf Ab Cannotto costampabile.
AU2011345450C1 (en) 2010-12-22 2015-11-19 Fisher & Paykel Appliances Limited Improved appliance, motor or stator
ITTO20130744A1 (it) * 2013-09-13 2015-03-14 Skf Ab Cannotto costampabile con vasche di lavatrici

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1602769A2 (fr) * 2002-12-10 2005-12-07 LG Electronics Inc. Machine à laver à tambour

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09155096A (ja) * 1995-12-04 1997-06-17 Ntn Corp 全自動洗濯機の筒状槽軸の支持機構
DE19960501A1 (de) * 1999-12-15 2001-06-21 Bsh Bosch Siemens Hausgeraete Laugenbehälter für eine Waschmaschine
JP4014989B2 (ja) * 2002-09-30 2007-11-28 株式会社東芝 ドラム式洗濯機
KR100505233B1 (ko) * 2002-12-10 2005-08-03 엘지전자 주식회사 드럼 세탁기
KR100651980B1 (ko) * 2003-12-02 2006-11-30 엘지전자 주식회사 드럼세탁기의 구동부 구조
AU2005254910B2 (en) * 2004-06-21 2009-04-30 Lg Electronics Inc. Tilted drum-type washing machine with pulsator and method for controlling the same
KR100651849B1 (ko) * 2005-02-01 2006-12-01 엘지전자 주식회사 세탁기
DE102006046289B4 (de) * 2005-09-30 2010-11-04 Lg Electronics Inc. Trommelwaschmaschine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1602769A2 (fr) * 2002-12-10 2005-12-07 LG Electronics Inc. Machine à laver à tambour

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2008054156A1 *

Also Published As

Publication number Publication date
JP4938856B2 (ja) 2012-05-23
JP2010508882A (ja) 2010-03-25
WO2008054156A1 (fr) 2008-05-08
EP2104759A4 (fr) 2009-12-30
KR100802539B1 (ko) 2008-02-13
CN101563493A (zh) 2009-10-21
US20100101281A1 (en) 2010-04-29

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