US20060059955A1 - Washing machine - Google Patents

Washing machine Download PDF

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Publication number
US20060059955A1
US20060059955A1 US11/143,488 US14348805A US2006059955A1 US 20060059955 A1 US20060059955 A1 US 20060059955A1 US 14348805 A US14348805 A US 14348805A US 2006059955 A1 US2006059955 A1 US 2006059955A1
Authority
US
United States
Prior art keywords
rotor
rotary shaft
reinforcing member
washing machine
insertion hole
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
US11/143,488
Other languages
English (en)
Inventor
Seon Kim
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
Assigned to SAMSUNG ELECTRONICS CO., LTD. reassignment SAMSUNG ELECTRONICS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KIM, SEON GOO
Publication of US20060059955A1 publication Critical patent/US20060059955A1/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
    • D06F37/30—Driving arrangements 
    • D06F37/304—Arrangements or adaptations of electric motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • H02K1/30—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
    • H02K21/222—Flywheel magnetos
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1735—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at only one end of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/003—Couplings; Details of shafts
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans

Definitions

  • Apparatuses consistent with the present invention relate to a washing machine, and, more particularly, to a washing machine having an improved fixing structure between a rotary shaft and a rotor of a driving motor, whereby the rotor is easily and quickly fixed to the rotary shaft.
  • a rotary tub When laundry is washed by a washing machine, a rotary tub is rotated in alternating directions. When the washed laundry is dewatered by the washing machine, on the other hand, the rotary tub is rotated only in one direction at a high speed. Consequently, the rotary tub is rotatably disposed in a water tub, in which wash water is filled, and at the outside of the water tub is disposed a driving motor to rotate the rotary tub.
  • a washing machine is disclosed in U.S. Pat. No. 6,510,716, which provides a water tub; a rotary tub rotatably disposed in the water tub while being attached to a rotary shaft extending through the water tub for washing the laundry; and a driving motor disposed at the outside of the water tub for rotating the rotary shaft and the rotary tub.
  • the driving motor includes a stator mounted to an outer surface of the water tub; and a rotor disposed around the stator while being connected to the rotary shaft. In an opening formed at the center of the rotor is disposed a connection member connected between the rotor and the rotary shaft for transmitting a rotating force of the rotor to the rotary shaft.
  • connection member In the washing machine disclosed in the above-mentioned patent, however, the structure of the connection member is very complicated such that the rotary shaft is connected to the rotary tub with a coupling force necessary for the rotor to effectively rotate the rotary shaft and the rotary tub. Also, the connection member is fixed to the rotor by a plurality of bolts, which increases the manufacturing costs of the connection member and time necessary to assemble the connection member.
  • the rotary shaft is not directly connected to the rotor, i.e., the rotary shaft is connected to the rotor via the connection member.
  • the connection member it is difficult to coaxially fix the rotor to the rotary shaft, and therefore, noise and vibration due to eccentricity between the rotor and the rotary shaft are generated when the rotor and the rotary shaft are rotated.
  • washing machine having a structure in which a rotor of a driving motor is directly connected to a rotary shaft.
  • the present invention provides a washing machine comprising: a water tub; a rotary tub disposed in the water tub; a rotary shaft mounted to the rotary tub and extending through the water tub; a rotor directly connected to the end of the rotary shaft; and a reinforcing member attached to the rotor to increase the strength of the rotor.
  • the rotor may have a polygonal insertion hole
  • the rotary shaft may have a polygonal inserting protrusion formed at the end thereof, the inserting protrusion of the rotary shaft being inserted through the insertion hole of the rotor.
  • the reinforcing member may also have a polygonal through-hole corresponding to the insertion hole of the rotor, the inserting protrusion of the rotary shaft being inserted through the through-hole of the reinforcing member.
  • the reinforcing member also has a plurality of fitting protrusions extending vertically from the reinforcing member, and the rotor has a plurality of fitting holes, into which the fitting protrusions of the reinforcing member are fitted, respectively, such that the reinforcing member is easily attached to the rotor.
  • An exemplary embodiment of the washing machine comprises: a fixing bolt threadly coupled to the inserting protrusion of the rotary shaft through the reinforcing member and the rotor from the outside of rotor. Further, the washing machine may comprise a pad disposed between the reinforcing member and a head of the fixing bolt.
  • FIG. 1 is a longitudinal sectional view showing a washing machine according to an exemplary embodiment of the present invention
  • FIG. 2 is an enlarged sectional view showing a rotary shaft connected to a rotary tub and a driving motor to rotate the rotary shaft;
  • FIG. 3 is an exploded perspective view showing the fixing structure between a rotor of the driving motor and the rotary shaft;
  • FIG. 4 is an assembled perspective view of FIG. 3 ;
  • FIG. 5 is a sectional view taken along the line V-V of FIG. 4 .
  • FIG. 1 is a longitudinal sectional view showing a washing machine according to an exemplary embodiment the present invention
  • FIG. 2 is an enlarged sectional view showing a rotary shaft connected to a rotary tub and a driving motor to rotate the rotary shaft.
  • the washing machine comprises a housing 10 forming the appearance of the washing machine; a water tub 11 disposed in the housing 10 for storing wash water; a rotary tub 12 rotatably disposed in the water tub 11 for washing laundry; and a door 13 hingedly attached to the front surface of the housing 10 .
  • a water supply hose 14 to supply wash water to the water tub 11 and a detergent supply unit 15 to supply detergent to the water tub 11 .
  • a drain hose 16 and a drain pump 17 are disposed at the lower part of the housing 10 to discharge wash water in the water tub 11 out of the housing 10 .
  • a driving motor 30 to rotate the rotary tub 12 in alternating directions.
  • a rotary shaft 20 having one end connected to the rotary tub 12 and the other end connected to the driving motor 30 , to transmit a rotating force of the driving motor 30 to the rotary tub 12 .
  • the rotary shaft 20 extends through the water tub 11 .
  • the driving motor 30 comprises a stator 31 having a ring-shaped magnetic core 32 attached to the outer surface of the water tub 11 and a coil 33 wound on the magnetic core 32 ; and a rotor 40 disposed around the stator 31 while being connected to the rotary shaft 20 .
  • the rotary shaft 20 having one end connected to the rotary tub 12 and the other end connected to the rotor 40 , is supported by bearing members 22 disposed at the water tub 11 .
  • FIG. 3 is an exploded perspective view showing the fixing structure between the rotor 40 of the driving motor 30 and the rotary shaft 20
  • FIG. 4 is an assembled perspective view of FIG. 3
  • FIG. 5 is a sectional view taken along the line V-V of FIG. 4 .
  • the rotor 40 comprises a disk-shaped base 41 , to which the rotary shaft 20 is connected; an outer circumferential extension 42 vertically extending from a rim of the base 41 ; and a plurality of magnets 43 attached to the outer circumferential extension 42 while being spaced a predetermined distance from each other.
  • an insertion hole 44 Through the center of the base 41 of the rotor 40 is formed an insertion hole 44 , through which the rotary shaft is inserted.
  • a plurality of rotary blades 45 and heat sink holes 46 are disposed in the radial direction thereof while the rotary blades 45 and the heat sink holes 46 are alternately arranged in the circumferential direction thereof.
  • an inserting protrusion 21 which has the same shape and size as the insertion hole 44 such that the inserting protrusion 21 is inserted through the insertion hole 44 of the base 41 .
  • the insertion hole 44 and the inserting protrusion 21 are formed in the shape of a polygon such that the rotary shaft 20 can be rotated along with the rotor 40 when the rotor 40 is rotated after the inserting protrusion 21 is inserted through the insertion hole 44 , i.e., such that the rotor is prevented from rotating relative to the rotary shaft.
  • the insertion hole 44 and the inserting protrusion 21 are approximately or substantially formed in the shape of a rectangle with two small sides being curved.
  • a reinforcing member 50 is attached to the outer surface of the base 41 .
  • the reinforcing member 50 is formed in the shape of a disk. At the center of the reinforcing member 50 is formed a through-hole 51 having the same shape and size as the insertion hole 44 of the rotor 40 , through which the inserting protrusion 21 of the rotary shaft 20 is inserted.
  • a plurality of fitting protrusions 52 which vertically extend, such that the reinforcing member 50 is easily attached to the base 41 of the rotor 40 .
  • a plurality of fitting holes 47 are formed at the base 41 of the rotor 40 , into which the fitting protrusions 52 of the reinforcing member 50 are fitted.
  • the reinforcing member 50 When the fitting protrusions 52 of the reinforcing member 50 are fitted into fitting holes 47 of the base, respectively, from the outside of the rotor 40 , the reinforcing member 50 is easily attached to the outer surface of the rotor 40 while the through-hole 51 of the reinforcing member 50 is aligned with the insertion hole 44 of the base 41 .
  • the reinforcing member 50 is attached to the rotor 40 , as described above, such that the strength of the disk-shaped base 41 of the rotor 40 is increased, whereby the rotary shaft 20 and the rotary tub 12 , which are much heavier than the rotor 40 , are smoothly rotated by the rotor 40 .
  • a fixing bolt 53 is threadly coupled into the rotary shaft 20 through the through-hole 51 of the reinforcing member 50 and the insertion hole 44 of the rotor 40 from the outside of the reinforcing member 50 .
  • a pad 54 is disposed between the head of the fixing bolt 53 and the reinforcing member 50 .
  • the pad 54 has a size larger than the through-hole 51 of the reinforcing member 50 and the insertion hole 44 of the rotor 40 . Consequently, the head of the fixing bolt 53 presses the pad 54 , as the fixing bolt 53 is threadly coupled into the rotary shaft 20 , and therefore, the rotor 40 and the reinforcing member 50 are securely fixed to the rotary shaft 20 .
  • the inserting protrusion 21 of the rotary shaft 20 may be forcibly fitted into the through-hole 51 of the reinforcing member 50 through the insertion hole 44 of the rotor 40 , and the fitting protrusions 52 of the reinforcing member 50 may be forcibly fitted into the fitting holes 47 of the base 41 of the rotor 40 , respectively.
  • the fixing bolt 53 and the pad 54 are not necessary.
  • the fixing bolt 53 with the pad 54 fitted thereon is threadly coupled into the rotary shaft 20 through the through-hole 51 and the insertion hole 44 from the outside of the reinforcing member 50 .
  • the rotor 40 and the reinforcing member 50 are securely fixed to the rotary shaft 20 .
  • the rotor of the driving motor is directly connected to the rotary shaft. Consequently, the present invention has the effect of reducing manufacturing costs and assembling time. Also, the rotor is coaxially fixed to the rotary shaft, and therefore, noise and vibration are not generated when the rotor and the rotary shaft are rotated.
  • the strength of the rotor at the position where the rotor is fixed to the rotary shaft is increased by the reinforcing member that is easily attached to the rotor, and therefore, the rotary shaft and the rotary tub are smoothly rotated by the rotor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Motor Or Generator Frames (AREA)
US11/143,488 2004-09-23 2005-06-03 Washing machine Abandoned US20060059955A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020040076577A KR20060027679A (ko) 2004-09-23 2004-09-23 세탁기
KR2004-76577 2004-09-23

Publications (1)

Publication Number Publication Date
US20060059955A1 true US20060059955A1 (en) 2006-03-23

Family

ID=36072464

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/143,488 Abandoned US20060059955A1 (en) 2004-09-23 2005-06-03 Washing machine

Country Status (7)

Country Link
US (1) US20060059955A1 (fr)
EP (1) EP1640492A3 (fr)
KR (1) KR20060027679A (fr)
CN (1) CN1752329A (fr)
AU (1) AU2005202268A1 (fr)
RU (1) RU2005116966A (fr)
TW (1) TW200610849A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090107186A1 (en) * 2007-10-31 2009-04-30 Lg Electronics Inc. Motor and washing machine using the same
JP2018130157A (ja) * 2017-02-13 2018-08-23 リンナイ株式会社 衣類乾燥機
US20230006505A1 (en) * 2021-06-30 2023-01-05 Bryan Prucher Synchronized dual radial gap motor cluster assembly

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102195377B (zh) * 2010-03-12 2013-03-27 建准电机工业股份有限公司 马达转动件
KR101276303B1 (ko) * 2011-08-11 2013-06-24 삼성중공업 주식회사 풍력발전기
WO2019184797A1 (fr) * 2018-03-30 2019-10-03 青岛海尔滚筒洗衣机有限公司 Moteur à transmission directe pour appareil de traitement du linge et appareil de traitement du linge

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6396177B1 (en) * 1999-01-08 2002-05-28 Lg Electronics Inc. Structure of rotor for outer rotor type brushless motor
US6510716B1 (en) * 1999-10-19 2003-01-28 Lg Electronics Inc. Structure of driving unit in drum type washing machine
US20030132675A1 (en) * 2001-04-02 2003-07-17 Kwon Ho Cheol Motor for washing machine
US20030213271A1 (en) * 2002-05-14 2003-11-20 Lim Hee Tae Washing machine with structure for absorbing vibration of driving part

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4335966C2 (de) * 1993-10-21 1998-07-16 Fhp Motors Gmbh Antriebsvorrichtung für eine Wasch- oder eine ähnliche Maschine mit einem kollektorlosen Gleichstrommotor
TW472094B (en) * 1999-05-19 2002-01-11 Toshiba Corp Rolling drum type washing machine
AU782017B2 (en) * 1999-10-18 2005-06-30 Lg Electronics Inc. A driving unit for a drum type washing machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6396177B1 (en) * 1999-01-08 2002-05-28 Lg Electronics Inc. Structure of rotor for outer rotor type brushless motor
US6510716B1 (en) * 1999-10-19 2003-01-28 Lg Electronics Inc. Structure of driving unit in drum type washing machine
US20030132675A1 (en) * 2001-04-02 2003-07-17 Kwon Ho Cheol Motor for washing machine
US20030213271A1 (en) * 2002-05-14 2003-11-20 Lim Hee Tae Washing machine with structure for absorbing vibration of driving part

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090107186A1 (en) * 2007-10-31 2009-04-30 Lg Electronics Inc. Motor and washing machine using the same
EP2206224A1 (fr) * 2007-10-31 2010-07-14 Lg Electronics Inc. Moteur et machine à laver l'utilisant
US8174162B2 (en) * 2007-10-31 2012-05-08 Lg Electronics Inc. Motor and washing machine using the same
EP2206224A4 (fr) * 2007-10-31 2014-04-02 Lg Electronics Inc Moteur et machine à laver l'utilisant
JP2018130157A (ja) * 2017-02-13 2018-08-23 リンナイ株式会社 衣類乾燥機
US20230006505A1 (en) * 2021-06-30 2023-01-05 Bryan Prucher Synchronized dual radial gap motor cluster assembly
US11870322B2 (en) * 2021-06-30 2024-01-09 Bryan Prucher Synchronized dual radial gap motor cluster assembly

Also Published As

Publication number Publication date
EP1640492A2 (fr) 2006-03-29
TW200610849A (en) 2006-04-01
CN1752329A (zh) 2006-03-29
EP1640492A3 (fr) 2006-08-23
RU2005116966A (ru) 2006-11-20
KR20060027679A (ko) 2006-03-28
AU2005202268A1 (en) 2006-04-06

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Legal Events

Date Code Title Description
AS Assignment

Owner name: SAMSUNG ELECTRONICS CO., LTD., KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KIM, SEON GOO;REEL/FRAME:016660/0032

Effective date: 20050513

STCB Information on status: application discontinuation

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