US20100139331A1 - Drum Type Washing Machine - Google Patents

Drum Type Washing Machine Download PDF

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Publication number
US20100139331A1
US20100139331A1 US12/449,697 US44969708A US2010139331A1 US 20100139331 A1 US20100139331 A1 US 20100139331A1 US 44969708 A US44969708 A US 44969708A US 2010139331 A1 US2010139331 A1 US 2010139331A1
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US
United States
Prior art keywords
bearing housing
drum
washing machine
type washing
drum type
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.)
Abandoned
Application number
US12/449,697
Other languages
English (en)
Inventor
Hee Tae Lim
Hyun Seok Seo
Min Gyu Jo
Jae Won Chang
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.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
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 LG Electronics Inc filed Critical LG Electronics Inc
Assigned to LG ELECTRONICS INC. reassignment LG ELECTRONICS INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHANG, JAE WON, JO, MIN GYU, LIM, HEE TAE, SEO, HYUN SEOK
Publication of US20100139331A1 publication Critical patent/US20100139331A1/en
Abandoned 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
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/22—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a horizontal axis
    • 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
    • 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 

Definitions

  • the present invention relates to washing machines, and more particularly, to a drum type washing machine which enables to enhance rigidity of a system thereof and make the drum type washing machine lighter.
  • the washing machine performs steps of washing, rinsing, and spinning for removing dirt from laundry by using interaction between the detergent and the water.
  • the washing machines there are cylinder type, agitator type, pulsator type washing machines according to washing types.
  • the agitator type washing machine washes laundry by rotating a blade like agitator upright from a center of a washing tub in left/right directions, and the pulsator type washing machine washes the laundry with water circulation formed by rotating a disc like pulsator.
  • the drum type washing machine washes the laundry by placing water, detergent, and the laundry in the drum having a plurality of projections on the drum and rotating the drum around a horizontal axis at a slow speed to cause impacts as the laundry is dropped after lifted by the projections and friction between the laundry. Since the drum type washing has advantage in that there is almost no damage of the laundry and water consumption is low, it is a trend that use of the drum type washing machine increases.
  • FIG. 1 illustrates a related art drum type washing machine, schematically.
  • the related art drum type washing machine will be described briefly with reference to FIG. 1 .
  • the related art drum type washing machine is provided with a drum 1 for holding washing objects, a tub 2 and a cabinet 7 both surrounding the drum 1 , and a motor 5 for driving the drum 1 .
  • the related art drum type washing machine is also provided with a drum driving shaft 4 rotated by the motor 5 for rotating the drum 1 .
  • the drum driving shaft 4 is supported on a bearing housing 3 on a rear wall of the tub 2 . Under the tub 2 , there is a damper 6 for reducing transmission of vibration from the tub 2 caused by rotation of the drum to the cabinet 7 .
  • the vibration is transmitted from the drum 1 to the bearing housing 3 , and therefrom to the tub 2 .
  • the vibration is dampened by the damper before the vibration is transmitted from the tub 2 to the cabinet 7 .
  • the bearing housing fixedly secured to the tub and the damper under the tub amplify vibration of the tub at the time the drum vibrates, to increase noise from an entire system.
  • the amplified vibration of the tub requires enhancing strength of the entire system.
  • the misalignment of the bearings in the bearing housing causes difficulty in placing the drum driving shaft in the bearings.
  • an object of the present invention is to provide a drum type washing machine which enables to enhance rigidity of a system thereof and make the drum type washing machine lighter.
  • Another object of the present invention is to provide a drum type washing machine which enables to reduce vibration from an entire system when the drum vibrates.
  • Another object of the present invention is to provide a drum type washing machine which enables to reduce a number of components of, and a time period required for assembling, a bearing housing.
  • a drum type washing machine includes a cabinet, a tub provided in the cabinet, a drum rotatably provided in the tub, and a bearing housing including a hub having a rotating shaft of the drum passed therethrough and bearings placed in a center portion thereof, a supporting portion which extends from an outside circumference of the hub integrally, and a fastening portion provided integrally with the supporting portion.
  • a drum type washing machine in another aspect of the present invention, includes a cabinet, a drum rotatably mounted in the cabinet, a bearing housing including a first bearing housing having a hub with a rotation shaft of the drum passed therethrough, a supporting portion along an outside circumference to the first bearing housing, and a second bearing housing having a fastening portion adjacent to the supporting portion, a vibration attenuating device in the cabinet for attenuating vibration generated by the drum, and a plurality of connective supporters for distributing force from the bearing housing and transmissing the distributed force to the vibration attenuating device.
  • FIG. 1 illustrates a related art drum type washing machine, schematically
  • FIG. 2 illustrates a section of a drum type washing machine in accordance with a preferred embodiment of the present invention, schematically;
  • FIG. 3 illustrates a perspective view of the drum type washing machine in FIG. 2 with a partial cut away view
  • FIG. 4 illustrates a perspective view of a first bearing housing mounted to the drum type washing machine in FIG. 2 .
  • FIG. 2 illustrates a section of a drum type washing machine in accordance with a preferred embodiment of the present invention schematically
  • FIG. 3 illustrates a perspective view of the drum type washing machine in FIG. 2 with a partial au away view.
  • the drum type washing machine may include a cabinet 70 which forms an exterior of the drum type washing machine, a drum 10 rotatably provided in the cabinet 70 , a rotating shaft 40 for rotating the drum 10 , and a motor 50 connected to the rotating shaft 40 .
  • the drum type washing machine has a bearing housing 300 for supporting the rotating shaft 40 .
  • the bearing housing 300 includes a first bearing housing 310 for direct supporting of the rotating shaft 40 , and a second bearing housing 320 on an outside of the first bearing housing 310 .
  • the drum type washing machine also may include a vibration attenuating device 60 for attenuating vibration transmitted from the drum to the cabinet 70 .
  • a connective supporter 400 for supporting the bearing housing 300 may be provided between the vibration attenuating device 60 and the bearing housing 300 .
  • the connective supporter 400 has one side fastened to a layer side of the bearing housing with a fastening member 30 , and the other side fixedly secured to the vibration attenuating device 60 .
  • the vibration attenuating device 60 is projected from a bottom of the cabinet 70 , and may include attenuating members, such as dampers or springs.
  • the bearing housing 300 and the connective supporter 400 will be described in detail, later.
  • FIG. 4 illustrates a perspective view of the first bearing housing mounted to the drum type washing machine in FIG. 3 .
  • the first bearing housing 310 may include a hub 311 for placing the bearings (see 21 and 22 in FIG. 2 ) therein, a supporting portion 312 which extends from an outside circumference of the hub 311 , and a fastening portion 313 which also extends from an outside circumference of the hub 311 longer than the supporting portion 312 .
  • the hub 311 , the supporting portion 312 , and the fastening portion 313 are formed integrally.
  • the supporting portion 312 may have at least one first fastening boss 312 a for fastening a stator (see 51 in FIG. 3 ) of the motor thereto, and the fastening portion 313 may have at least one second fastening boss 313 a for fastening the connective supporter 400 thereto.
  • the hub 311 may have a center opening 311 a with a front bearing 21 and a rear bearing 22 placed in opposite sides thereof for rotatably supporting the rotating shaft (see 40 in FIG. 2 ).
  • the supporting portion 312 surrounds the outside circumference of the hub 311 and is extended in a radial direction therefrom. It is preferable that the supporting portion 312 has a thickness of, for an example, 2-3 mm, and has a shape repeatedly projected and recessed substantially with reference to a plane perpendicular to an axis of the hub 311 along a circumferential direction.
  • the projected portion of the supporting portion 312 may have the fastening boss 312 a for fastening the stator 51 of the motor as described before.
  • the fastening portion 313 is an extension from the hub 311 longer than the supporting portion 312 . It is preferable that the fastening portion 313 is fabricated of a stiff material thicker than the supporting portion 312 . This is because the connective supporter 400 is fastened to the second fastening boss 313 a of the fastening portion 313 for supporting weight of the drum 10 and the bearing housing 300 .
  • a plurality of the fastening portions 313 are formed in a radial direction of the bearing housing 300 , for an example, two as shown in the drawing.
  • the connective supporter 400 is fastened to each of the second fastening bosses 313 a of the fastening portions 313 .
  • numbers of the fastening portions 313 and the connective supporters 400 are not limited to two, but appropriate variations thereof are possible.
  • the connective supporter 400 may include an extension portion 410 extended downward in a radial direction of the bearing housing 300 , and a connection portion bent from the extension portion 410 .
  • a plurality of the connective supporters 400 are provided, and more preferably, the connective supporters 400 are provided symmetrically under the bearing housing 300 .
  • connection portion 420 transmits the distributed force from the extension portion 410 to the vibration attenuating device 60 .
  • the connection portion 420 is mounted parallel to the bottom of the cabinet 70 substantially, and may be connected to a first vibration attenuating device 61 having a damper and a second vibration attenuating device 63 having a spring at an underside of the connection portion 420 .
  • the extension portion 410 may have reinforcing ribs 411 for reinforcing strength of the connective supporter 400 for sustaining the force to the extension portion 410 .
  • the second bearing housing 320 is connected to the first bearing housing 310 on a front side of the first bearing housing 310 , i.e., on a front side of the supporting portion 312 .
  • the first bearing housing 310 may be injection molded inserted in the second bearing housing 320 , or fabricated separately and coupled with the second bearing housing 320 .
  • the first bearing housing 310 is injection molded inserted in the second bearing housing 320
  • the first bearing housing 310 and the second bearing housing 320 will be fabricated as one unit.
  • the second bearing housing 320 may be formed of plastic
  • the first bearing housing 310 may be formed of metal, for an example, aluminum.
  • the drum type washing machine of the present invention has the following advantages.
  • the bearing housing having the supporting portion for mounting the stator of the motor thereto and the fastening portion for mounting the connective supporter thereto fabricated as one unit, permits to reduce a number of components, and a time period, required for assembly of the bearing housing.
  • the direct fastening of the stator of the motor and the connective supporter to the strong first bearing housing improves system stiffness, and makes an entire system lighter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
US12/449,697 2007-02-23 2008-02-22 Drum Type Washing Machine Abandoned US20100139331A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR1020070018281A KR101414599B1 (ko) 2007-02-23 2007-02-23 드럼 세탁기
KR10-2007-0018281 2007-02-23
PCT/KR2008/001050 WO2008103007A2 (fr) 2007-02-23 2008-02-22 Machine à laver à tambour

Publications (1)

Publication Number Publication Date
US20100139331A1 true US20100139331A1 (en) 2010-06-10

Family

ID=39710614

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/449,697 Abandoned US20100139331A1 (en) 2007-02-23 2008-02-22 Drum Type Washing Machine

Country Status (5)

Country Link
US (1) US20100139331A1 (fr)
EP (1) EP2122035B1 (fr)
KR (1) KR101414599B1 (fr)
CN (1) CN101680151A (fr)
WO (1) WO2008103007A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113123060A (zh) * 2019-12-31 2021-07-16 合肥海尔滚筒洗衣机有限公司 一种双滚筒洗衣机

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WO2006052081A1 (fr) * 2004-11-10 2006-05-18 Lg Electronics Inc. Secheur
KR20100080415A (ko) * 2008-12-30 2010-07-08 엘지전자 주식회사 세탁장치
KR101819498B1 (ko) 2008-12-30 2018-01-17 엘지전자 주식회사 세탁장치
KR101586311B1 (ko) * 2008-12-30 2016-01-18 엘지전자 주식회사 드럼세탁기
PL2387633T3 (pl) * 2008-12-30 2017-10-31 Lg Electronics Inc Maszyna pralnicza
CA2748825C (fr) 2008-12-30 2013-10-15 Lg Electronics Inc. Lave-linge
US9038424B2 (en) * 2008-12-31 2015-05-26 Lg Electronics Inc. Laundry machine
KR20100129161A (ko) 2009-05-28 2010-12-08 엘지전자 주식회사 세탁장치
US9828715B2 (en) 2009-05-28 2017-11-28 Lg Electronics Inc. Laundry maching having a drying function
KR20100129174A (ko) * 2009-05-28 2010-12-08 엘지전자 주식회사 세탁장치
KR101698854B1 (ko) * 2009-05-28 2017-01-24 엘지전자 주식회사 세탁장치의 제조방법
KR20100129164A (ko) * 2009-05-28 2010-12-08 엘지전자 주식회사 세탁장치
KR20100129175A (ko) * 2009-05-28 2010-12-08 엘지전자 주식회사 세탁장치
KR101692726B1 (ko) 2009-05-28 2017-01-04 엘지전자 주식회사 세탁장치
KR20100129156A (ko) 2009-05-28 2010-12-08 엘지전자 주식회사 세탁장치
KR20100129158A (ko) * 2009-05-28 2010-12-08 엘지전자 주식회사 세탁장치
KR20100129157A (ko) * 2009-05-28 2010-12-08 엘지전자 주식회사 세탁장치
KR101663610B1 (ko) 2009-05-28 2016-10-07 엘지전자 주식회사 세탁장치
EP2385163B1 (fr) 2010-05-03 2016-10-05 Electrolux Home Products Corporation N.V. Machine à laver avec système de pompe à chaleur intégrée
KR20150017889A (ko) * 2013-08-08 2015-02-23 삼성전자주식회사 세탁기 포장용 하부 완충장치

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US20060016228A1 (en) * 2004-07-20 2006-01-26 Lg Electronics Inc. Drum type washing machine and bearing housing structure thereof
US20060096329A1 (en) * 2002-12-10 2006-05-11 Gon Kim Drum type washing machine
KR100651853B1 (ko) * 2005-09-30 2006-12-01 엘지전자 주식회사 인서트사출형 베어링하우징조립체 및 이를 구비한캐비넷/터브 일체형 드럼세탁기

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KR100587307B1 (ko) 2004-06-09 2006-06-08 엘지전자 주식회사 드럼세탁기 및 드럼세탁기의 드럼
KR100743707B1 (ko) 2005-02-03 2007-07-30 엘지전자 주식회사 건조 장치가 구비된 터브 일체형 드럼 세탁기
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US20060096329A1 (en) * 2002-12-10 2006-05-11 Gon Kim Drum type washing machine
US20060016228A1 (en) * 2004-07-20 2006-01-26 Lg Electronics Inc. Drum type washing machine and bearing housing structure thereof
KR100651853B1 (ko) * 2005-09-30 2006-12-01 엘지전자 주식회사 인서트사출형 베어링하우징조립체 및 이를 구비한캐비넷/터브 일체형 드럼세탁기
US20070074543A1 (en) * 2005-09-30 2007-04-05 Lg Electronics Inc. Bearing housing assembly of drum-type washing machine and drum-type washing machine with the same

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113123060A (zh) * 2019-12-31 2021-07-16 合肥海尔滚筒洗衣机有限公司 一种双滚筒洗衣机

Also Published As

Publication number Publication date
EP2122035A4 (fr) 2015-01-07
CN101680151A (zh) 2010-03-24
EP2122035B1 (fr) 2016-09-14
EP2122035A2 (fr) 2009-11-25
KR101414599B1 (ko) 2014-07-03
WO2008103007A3 (fr) 2009-09-17
KR20080078328A (ko) 2008-08-27
WO2008103007A2 (fr) 2008-08-28

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Date Code Title Description
AS Assignment

Owner name: LG ELECTRONICS INC.,KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LIM, HEE TAE;SEO, HYUN SEOK;JO, MIN GYU;AND OTHERS;REEL/FRAME:023480/0373

Effective date: 20090928

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION