EP2574694A1 - Washing machine - Google Patents

Washing machine Download PDF

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Publication number
EP2574694A1
EP2574694A1 EP12186033A EP12186033A EP2574694A1 EP 2574694 A1 EP2574694 A1 EP 2574694A1 EP 12186033 A EP12186033 A EP 12186033A EP 12186033 A EP12186033 A EP 12186033A EP 2574694 A1 EP2574694 A1 EP 2574694A1
Authority
EP
European Patent Office
Prior art keywords
washing machine
fastening
driving motor
water tub
tub
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Withdrawn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
EP12186033A
Other languages
German (de)
English (en)
French (fr)
Inventor
Jeong Ho Cha
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.)
Samsung Electronics Co Ltd
Original Assignee
Samsung 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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of EP2574694A1 publication Critical patent/EP2574694A1/en
Withdrawn legal-status Critical Current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
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/206—Mounting of motor
    • 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
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined 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
    • D06F37/26—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 
    • D06F37/304—Arrangements or adaptations of electric motors

Definitions

  • Embodiments of the present disclosure relate to a washing machine having an inner-rotor-type driving motor provided with a rotator unit disposed at an inner side of a stator unit thereof.
  • a washing machine includes a body forming an exterior, a water tub installed at an inside the body in a suspended manner, a rotating tub rotatably installed at an inside the water tub, and a driving motor disposed at a rear surface of the water tub and configured to rotate the rotating tub.
  • the driving motor includes a stator unit provided with a plurality of coils disposed in a circumferential direction, a rotator unit provided with a plurality of magnet disposed in a circumferential direction and interacting with the plurality of coils of the stator unit so as to rotate while interacting with the stator unit, and a rotating shaft having one end penetrated through the water tub and connected to a central side of a rear surface of the rotating tub while having the other end fixed to a center of the rotator unit.
  • a driving motor used in a washing machine an outer-rotor-type driving motor provided with a stator unit disposed at an inner side thereof and a rotator unit disposed at an outer side thereof is being used. Recently, an inner-rotor-type driving motor is being applied, and the inner-rotor-type driving motor is provided with a stator unit, which is formed in a shape of an ring, having a rotator unit disposed at an inner side thereof to obtain higher driving force while having a same size.
  • a washing machine having a bearing housing suitable for an installation of an inner-rotor-type driving motor provided with a stator unit, which is formed in a shape of a ring, having a rotator unit disposed at an inner side thereof.
  • a washing machine comprises a body, a water tub, a rotating tub, a driving motor, and a bearing housing.
  • the water tub may be installed inside the body to contain water.
  • the rotating tub may be rotatably installed inside the water tub.
  • the driving motor may be configured to generate a rotating force to rotate the rotating tub.
  • the bearing housing may be formed through an insert molding at a rear surface of the water tub and provided with the driving motor installed therein.
  • the driving motor may include a stator unit formed in a shape of a ring, a rotator unit disposed at an inner side of the stator unit to rotate while interacting with the stator unit, and a rotating shaft having one end thereof connected to the rotating tub while the other end thereof connected to a center of the rotator unit.
  • the bearing housing may include a housing part formed in a shape of a ring and provided with a bearing installed at an inner circumferential surface thereof so as to rotatably support the rotating shaft, a flange part extended from the housing part radially and outwardly and provided with the driving motor fixed thereto, and a plurality of fastening parts integrally extended from a periphery of the flange part to a rear side of the flange part and provided with the stator unit fastened thereto while being spaced apart from each other in the circumferential direction.
  • Each of the plurality of fastening parts is provided with a first fastening hole thereto for the fastening of the stator unit.
  • the stator unit may include a second fastening hole provided at a position corresponding to the first fastening hole.
  • the fastening part may be protruded beyond a rear surface of the water tub, and an adjacent area of the fastening part may include a supporting part positioned in the same plane as the rear surface of the water tub.
  • the supporting part may be supported by a surface of a mold configured to form the water tub.
  • the bearing housing may include a plurality of first reinforcing ribs extending from the flange part in a radial direction thereof.
  • the bearing housing may include at least one second reinforcing rib formed at the flange part in the circumferential direction.
  • One of the at least one second reinforcing rib may be formed at a periphery side of the flange part to connect the fastening parts to each other so that the fastening parts are supported by each other.
  • a washing machine in accordance with another aspect, includes a body, a water tub, a rotating tub, a driving motor and a bearing housing.
  • the water tub may be installed at an inside the body to contain water.
  • the rotating tub may be rotatably installed at an inside the water tub.
  • the driving motor may be configured to generate a rotating force to rotate the rotating tub.
  • the bearing housing may be integrally formed through an insert molding at a rear surface of the water tub and provided with the driving motor installed therein.
  • the driving motor may include a stator unit formed in a shape of a ring, a rotator unit disposed at an inner side of the stator unit to rotate while interacting with the stator unit, and a rotating shaft having one end thereof connected to the rotating tub while the other end thereof connected to a center of the rotator unit.
  • a washing machine includes a driving motor provided with a stator unit, which is formed in a shape of a ring, having a rotator unit disposed at an inner side thereof, and a bearing housing for an installation of the driving motor, and the bearing housing is integrally formed with a rear surface of a water tub through injection molding, thereby able to maintain a stable state while installed at the water tub.
  • a washing machine includes a body 10 forming an external appearance, a water tub 20 installed at an inside the body 10 in a suspended manner and configured to contain water.
  • a rotating tub 30 rotatably installed at an inside the water tub 20, and a driving motor 40 installed at a rear surface of the water tub 20 so as to generate a rotating force to rotate the rotating tub 30.
  • the body 10 In order for a laundry to be input into an inside the rotating tub 30 through the body 10 and the water tub 20, the body 10 is provided at a front surface thereof with a first inlet 10a.
  • the water tub 20 is provided at a front surface thereof with a second inlet 20a and the rotating tub 30 is provided at a front surface with a third inlet 30a.
  • the body 10 is provided with a door 50 rotatably installed at one side of the front surface to open/close the first inlet 10a.
  • the water tub 20 is provided at the rear surface with a bearing housing 60 disposed thereto for the installation of the driving motor 40.
  • the water supply pipe 11 is provided at an upper portion of the water tub to supply water to the water tub 20.
  • a water supplying valve 12 opens/closes the water supplying pipe 11.
  • a detergent supplying apparatus 13 connected to the water supplying pipe 11 allowing the supplied water to be mixed with a detergent.
  • a water supplying hose 14 connects the detergent supplying apparatus 13 to the water tub 20 to guide the water and the detergent to the water tub 20.
  • the water tub 20 is provided at a lower portion with a draining pipe 15 and a draining pump 16 disposed thereto so that a washing water may be discharged to an outside after a washing is completed.
  • the rotating tub 30 is provided at a center of a rear surface with a rotating shaft 43 of the driving motor 40, which will be described later.
  • the rotating tub 30 is provided at an outer circumferential surface with a through-hole 31 for the water of the water tub 20 to be introduced to an inside the rotating tub 30.
  • the rotating tub 30 is provided at an inside with a plurality of lifters 32 disposed thereto while being spaced apart from each other in a circumferential direction thereof to lift a laundry to an upper side thereof.
  • the driving motor 40 includes a stator unit 41 installed on the water tub 20, a rotator unit 42 to rotate while interacting with the stator unit 41, and a rotating shaft 43 having one end thereof installed at the rotator unit 42 while the other end thereof installed at the rotating tub 30 after penetrating the rear surface of the water tub 20 so that the rotating tub 30 rotates along with the rotator unit 42.
  • the driving motor 40 according to the embodiment of the present disclosure, as described above, is implemented as an inner-rotor-type driving motor having the stator unit 41 provided with the rotator unit 42 disposed at an inner side thereof.
  • the stator unit 41 is formed in a shape of a ring, and is provided with a core 41a having a plurality of core plates stacked up against against each other at an inside thereof.
  • the stator unit 41 includes a plurality of teeth parts 41b extended from an inner circumferential surface of the stator unit 41, and a coil 41c formed by winding a wire around the each of the plurality of teeth parts 41b.
  • the rotator unit 42 has the rotating shaft 43 fixed to a center area thereof, and the rotator unit 42 has a plurality of magnets 42a disposed at an outer circumferential surface thereof to correspond to the each of the plurality of teeth parts 41b of the stator unit 41.
  • the bearing housing 60 for the installation of the driving motor 40 is disposed at the rear surface of the rotating tub 30.
  • the bearing housing 60 enables the driving motor 40 to be installed at the rear surface of the water tub 20, and at the same time, enables a bearing 70 to be installed thereto so that the rotating shaft 43 may be rotatably supported by the bearing 70. As illustrated on FIGS.
  • the bearing housing 60 is formed by integrally including a housing part 61 formed in a shape of a ring and provided with the bearing 70 installed at an inner circumferential surface thereof, a flange part 62 radially extended from the housing part 61 and provided with the driving motor 40 fixed thereto, and a fastening part 63 integrally and extendedly formed from the flange part 62 to a rear side thereof for the installation of the stator unit 41.
  • the rotation shaft 43 is installed while penetrating an inner side of the housing part 61.
  • Two units of the bearings 70 are disposed at both sides of an inner circumferential surface of the housing part 61 so that the rotating shaft 43 is rotatably supported by the two bearings 70 at an inner side of the housing part 61.
  • the flange part 62 is integrally formed with a first reinforcing rib 64 integrally and radially extended from the housing part 61 , and second reinforcing ribs 65a and 65b extended from the housing part 61 in a circumferential direction so that the strength of the flange part 62 is reinforced.
  • the first reinforcing rib 64 according to the embodiment of the present disclosure is provided in plurality while being spaced apart from each other in the circumferential direction.
  • the first reinforcing rib extends radially outwards from the housing part 61 along the flange part 62.
  • the second reinforcing ribs 65a and 65b are provided in plurality while being spaced apart from each other in the radial direction of the bearing housing 60.
  • the second reinforcing ribs 65a and 65b connect the first reinforcing ribs 64 to each other so that the first reinforcing ribs 64 are supported to each other in the circumferential direction.
  • the second reinforcing rib 65b which is formed at a periphery side among the second reinforcing ribs 65a and 65b, connects the fastening parts 63 to each other so that the fastening parts 63 are supported to each other in the circumferential direction.
  • the fastening part 63 is integrally formed in an extended manner from a rear surface of the water tub 20, and is provided in plurality while being spaced apart from each other in the circumferential direction.
  • Each of the fastening parts 63 is provided with a first fastening hole 63ato which the stator unit 41 may be fixed through a fastening member such as a screw.
  • the driving motor 40 applied to the embodiment of the present disclosure is an inner-rotor-type driving motor having the stator unit 41 provided with the rotator unit 42 disposed at an inner side thereof.
  • the stator unit 41 is needed to have a large diameter, compared to a stator unit 41 applied to an outer-rotor-type driving motor that is being widely used in a conventional scope.
  • the flange part 62 of the bearing housing 60, to which the stator unit 41 is fixed, is needed to have a large diameter to correspond to the size of the stator unit 41.
  • the fastening parts 63 is integrally extended from the periphery of the flange part 62 to a rear side thereof so as to enable the stator unit 41 to be installed at the flange part 62 of the bearing housing 60while maintaining the size of the flange part 62at a minimum.
  • stator unit 41 is provided with a second fastening hole 41d at a certain position of an outer side thereof corresponding to the first fastening hole 63a so that a fastening member may be fastened to the first fastening hole 63aby passing through the second fastening hole 41d, and thereby the stator unit 41 is fixed to the bearing housing 60.
  • the bearing housing 60 described above is integrally formed with each parts thereof, that is, the housing part 61, the flange part 62, the first reinforcing rib 64, the second reinforcing ribs 65a and 65b, and the fastening part 63, through an injection molding and the like.
  • the bearing housing 60 integrally formed is disposed at molds M1 and M2 that are configured to form the water tub 20, and is subject to an insert injection , thereby forming the water tub 20 having the bearing housing 60 at an inside the rear surface thereof.
  • the second reinforcing rib 65b which is formed at a periphery side among the second reinforcing ribs 65a and 65b, connects the fastening parts 63, which are spaced apart from to each other in the circumferential direction, so that the fastening parts 63 are supported to each other.
  • the water tub 20, as illustrated on FIG. 5 while in a state of the bearing housing 60 being disposed in between the two molds M1 and M2, is manufactured by hardening a resin after injecting the resin into a cavity formed in between the two molds M1 and M2 and the bearing housing 60.
  • the fastening part 63 provided at the bearing housing 60 in a process of molding the water tub 20 through the molds M1 and M2 as described above, enables the bearing housing 60 to be supported by one M1 of the molds M1 and M2, thereby preventing the bearing housing 60 from being moved in a process of resin being injected.
  • the distance between the fastening parts 63 is large, and thus the bearing housing 60 may not be stably supported by the mold M1.
  • the fastening parts 63 is provided at an adjacent area thereof with a supporting part 66 that has a shape of a ring as illustrated on FIG. 4 , and is positioned in the same plane as the rear surface of the water tub 20.
  • the supporting part 66 as such, as illustrated on FIG. 6 , in a process of the bearing housing 60 being injection-molded at the water tub 20, enables the bearing housing 60 to be directly supported by the mold M1, which is for the molding of the water tub 20, through the surface of the supporting part 66, thereby preventing the bearing housing 60 from being moved by the pressure of the melting resin acting at an inside the molds M1 and M2, and thus forming the water tub 20 having the bearing housing 60 disposed at a precise position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Motor Or Generator Frames (AREA)
EP12186033A 2011-09-28 2012-09-26 Washing machine Withdrawn EP2574694A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110097993A KR20130034132A (ko) 2011-09-28 2011-09-28 세탁기

Publications (1)

Publication Number Publication Date
EP2574694A1 true EP2574694A1 (en) 2013-04-03

Family

ID=46940391

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12186033A Withdrawn EP2574694A1 (en) 2011-09-28 2012-09-26 Washing machine

Country Status (4)

Country Link
US (1) US20130074553A1 (ko)
EP (1) EP2574694A1 (ko)
KR (1) KR20130034132A (ko)
CN (1) CN103031690A (ko)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104832546B (zh) * 2014-02-12 2019-03-29 青岛海尔滚筒洗衣机有限公司 一种轴承支撑座及具有其的洗衣机
CN106400390B (zh) * 2014-09-29 2019-07-23 青岛海尔滚筒洗衣机有限公司 一种滚筒洗衣机
KR102252508B1 (ko) * 2015-01-05 2021-05-14 엘지전자 주식회사 세탁기
CN106283507A (zh) * 2015-05-28 2017-01-04 无锡小天鹅股份有限公司 用于洗衣机的外筒组件和具有它的洗衣机
CN106151291A (zh) * 2016-07-29 2016-11-23 无锡小天鹅股份有限公司 洗衣机的轴承座和具有其的洗衣机
CN110219138A (zh) * 2019-06-14 2019-09-10 青岛海尔滚筒洗衣机有限公司 一种洗衣机轴套
WO2020249084A1 (zh) * 2019-06-14 2020-12-17 青岛海尔滚筒洗衣机有限公司 一种洗衣机轴套及洗衣机外筒底
CN110331557B (zh) * 2019-06-14 2022-09-16 重庆海尔滚筒洗衣机有限公司 一种洗衣机外筒底
KR20220124541A (ko) * 2021-03-03 2022-09-14 엘지전자 주식회사 의류처리장치

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0780506A1 (de) * 1995-12-19 1997-06-25 Bosch-Siemens HausgerÀ¤te GmbH Antriebsvorrichtung für eine von vorn beschickbare Waschmaschine
WO2006083108A2 (en) * 2005-02-01 2006-08-10 Lg Electronics Inc. Washing machine with double rotor type motor
EP2060669A1 (en) * 2007-11-05 2009-05-20 Daewoo Electronics Corporation Bearing housing and washing machine therewith

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000050447A (ko) * 1999-01-09 2000-08-05 윤종용 드럼세탁기
CN101608389B (zh) * 2008-06-17 2012-09-19 海尔集团公司 滚筒洗衣机

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0780506A1 (de) * 1995-12-19 1997-06-25 Bosch-Siemens HausgerÀ¤te GmbH Antriebsvorrichtung für eine von vorn beschickbare Waschmaschine
WO2006083108A2 (en) * 2005-02-01 2006-08-10 Lg Electronics Inc. Washing machine with double rotor type motor
EP2060669A1 (en) * 2007-11-05 2009-05-20 Daewoo Electronics Corporation Bearing housing and washing machine therewith

Also Published As

Publication number Publication date
KR20130034132A (ko) 2013-04-05
CN103031690A (zh) 2013-04-10
US20130074553A1 (en) 2013-03-28

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