WO2018127314A1 - A washing machine wherein the electric motor is integrated to the tub - Google Patents

A washing machine wherein the electric motor is integrated to the tub Download PDF

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Publication number
WO2018127314A1
WO2018127314A1 PCT/EP2017/077881 EP2017077881W WO2018127314A1 WO 2018127314 A1 WO2018127314 A1 WO 2018127314A1 EP 2017077881 W EP2017077881 W EP 2017077881W WO 2018127314 A1 WO2018127314 A1 WO 2018127314A1
Authority
WO
WIPO (PCT)
Prior art keywords
tub
holders
washing machine
electric motor
rotor
Prior art date
Application number
PCT/EP2017/077881
Other languages
English (en)
French (fr)
Inventor
Asuman Firat
Emin Gultekin SONMEZ
Gokhan ERGIN
Pevrul Sarikaya
Original Assignee
Arcelik Anonim Sirketi
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 Arcelik Anonim Sirketi filed Critical Arcelik Anonim Sirketi
Publication of WO2018127314A1 publication Critical patent/WO2018127314A1/en

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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
    • D06F37/30—Driving arrangements 
    • 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
    • D06F37/261—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements
    • D06F37/262—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements made of plastic material, e.g. by injection moulding
    • 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

Definitions

  • the present invention relates to a washing machine comprising an electric motor that is integrated into the tub and that drives the drum wherein the laundry is placed.
  • the drum wherein the laundry is placed rotates by being driven by an electric motor.
  • the electric motor is connected to the bottom part of the tub wherein the drum rotates.
  • the state of the art electric motor comprises a stator which is the static part thereof, a rotor that rotates in the stator and motor housings that are fixed to the stator and that journal the rotor from both ends thereof by means of ball bearings. Tabs are provided on the motor housings and the electric motor is fixed to bosses on the tub by means of the said tabs.
  • the motor housings function as the casing that holds the components of the electric motor together, group the stator and the rotor synchronously and enable the electric motor to be connected to the tub.
  • the rotor is journaled by the motor housing so as to rotate in the stator by means of the ball bearings.
  • the motor housing is a critical component and should be produced with small tolerances, increasing the costs.
  • separate connection elements are used for connecting the motor housing to the bosses on the tub and grouping the electric motor ( Figure 1, Figure 2); however, the high number of connection elements increase material and labor costs.
  • Patent Applications No. EP3064632 (A1), WO2009040258 (A1), WO2013182931 (A2) and US2013055771 (A1) relate to an electric motor that is used in washing machines and that drives the drum.
  • the aim of the present invention is the realization of a washing machine wherein the electric motor driving the drum is connected to the tub by lowering the number of connection elements.
  • the washing machine realized in order to attain the aim of the present invention comprises electric motor holders (referred briefly as the "holder” hereinafter) that are integrated under the tub and that extend toward under the tub parallel with each other.
  • the holders journal the rotor which is the rotating component of the electric motor driving the drum.
  • the holders enable the electric motor, which is composed of the rotor and the stator and which is brought to the washing machine production site without being grouped, to be grouped and fixed onto the tub.
  • the mechanical connection elements used for fixing the electric motor to the tub in the state of the art are not used in the present invention.
  • the rotor is journaled between the holders so as to rotate around its axis.
  • the stator is fixed between the holders and the rotor and the stator are grouped concentrically. While being fixed to the holders integrated with the tub, the electric motor composed of the stator and the rotor is also fixed to the tub. In the washing machine of the present invention, the number of parts needed for mounting the electric motor that drives the drum to the tub is decreased, and thus, savings in time and labor are provided.
  • Figure 1 the perspective view of the electric motor connected to the tub of a washing machine in the state of the art.
  • FIG. 2 the detailed view of the electric motor connected to the tub of a washing machine in the state of the art.
  • Figure 3 - is the schematic view of the washing machine of the present invention.
  • Figure 4 perspective view of an electric motor compose of a stator and a rotor.
  • Figure 5 - is the side view of the holders integrated into the tub of a washing machine.
  • Figure 6 - is the perspective view of the holders integrated into the tub of a washing machine.
  • Figure 7 the perspective view of the holders between which the electric motor is disposed and of the mounting screws.
  • Figure 8 the perspective view of the assembled state of the electric motor disposed between the holders.
  • Figure 9 the perspective view of the holders between which the electric motor is disposed and of the cover covering the slits through which the rotor shaft is inserted, prior to the attachment of the cover.
  • Figure 10 the perspective view of the holders between which the electric motor is disposed and of the cover covering the slits through which the rotor shaft is inserted, after the cover is attached.
  • Figure 11 - is the perspective view of the tub of a washing machine and the holder unit integrated into the tub.
  • Figure 12 the perspective view of the holder unit integrated into the tub by means of a planar intermediate plate.
  • the washing machine (1) comprises a drum (2) wherein the laundry is placed; a tub (3) that is produced from plastic material and wherein the drum (2) moves, and an electric motor (10) that is fixed to the tub (3), that drives the drum (2) and that has a stator (4), a rotor (5) that moves in the stator (4), a shaft (6) that is fitted through the center of the rotor (5), two ball bearings (7) that enable the rotor (5) to be journaled at both ends thereof and that are snap-fitted onto the shaft (6) and a pulley (9) whereon the belt (8) that transmits the movement to the drum (2) is attached.
  • the washing machine (1) of the present invention comprises two holders (13)
  • the stator (4) and the rotor (5) constituting the electric motor (10) are transferred to the related production site of the washing machine (1) after being produced so as to be mounted onto the tub (3).
  • the rotor (5) Before being mounted to the tub (3), the rotor (5) is not in the journaled position so as to rotate in the stator (4).
  • the rotor (5) is grouped with the shaft (6) before being mounted onto the tub (3).
  • the ball bearings (7) are provided on the shaft (6) at the two sides of the rotor (5) stack, so as to be placed into the bearing cages (11) in the holders (13).
  • the pulley (9) is also previously attached to one end of the shaft (6).
  • the rotor (5) is freely placed into the stator (4) bore without being journaled.
  • the ball bearings (7) that are free while the electric motor (10) is being placed between the holders (13) are fitted into the bearing cages (11) at the centers of the holders (13) and thus enable the rotor (5) to be journaled between the holders (13).
  • the stator (4) is fixed between the two holders (13) by means of mounting screws (12). While fixing the stator (4) by means of said mounting screws (12), the electric motor (10) composed of the rotor (5) and the stator (4) is enabled to be fixed to the tub (3). Then, the mounting process is completed by connecting the belt (8) between the pulley (9) and the drum (2).
  • each holder (13) comprises a slit (14) that extends from the periphery thereof to the bearing cage (11) at the center thereof, through which the shaft (6) is inserted while the electric motor (10) is being placed between the holders (13), thus enabling the ball bearing (7) on the shaft (6) to be seated by being aligned with the bearing cage (11).
  • each holder (13) comprises a cover (15) that covers the slit (14) after the mounting process of the electric motor (10) ( Figure 9, Figure 10).
  • the washing machine (1) comprises at least one support (16) that is disposed between the tub (3) and the holders (13), that connects the holders (13) to each other and/or to the tub (3) and that enables the holders (13) to be integrated to the tub (3) separately or as a single peace.
  • the support (16) comprises a plurality of ribs (17) that extend between the tub (3) and the holders (13) and that increase the mechanical strength and improve the dimensional stability ( Figure 6).
  • the holders (13) are produced by plastic injection separately or as integrated to the tub (3) together with the support (16).
  • the holders (13) are produced separately or together with the support (16) by being injected over the tub (3) that is previously produced.
  • the holders (13) are produced together with the support (16) separately from the tub (3) and connected to the tub (3) by mechanical connectors such as screws or rivets ( Figure 11).
  • the holders (13) are produced from a metal material such has aluminum and fixed to the tub (3) by being placed into the plastic injection mold during the production of the tub (3).
  • the washing machine (1) comprises a planar intermediate plate (18) that is positioned under the tub (3) and that enables the support (16) produced as single piece together with the holders (13) to be connected to the tub (3).
  • the intermediate plate (18) is produced from plastic material as a single piece with the tub (3) ( Figure 12).
  • the electric motor (10) is proposed, that is not functional before being mounted on the tub (3) and that becomes functional after being mounted on the tub (3), composed of only the stator (4) and the rotor (5) without the use of parts known as the motor housings (19).
  • the holders (13) both enable the rotor (5) to be journaled and the electric motor (10) to be fixed onto the tub (3).
  • Each holder (13) performs the function the bosses (21) that are formed on the tub (3), the motor housings (19) and the tabs (20) that are connected to the bosses (21) and positioned on the motor housings (19) in the state of the art.
  • the number of parts used in the mounting process is decreased, e.g. the mounting screws (12) that group the stator (4) and the rotor (5) also fix the electric motor (10) to the tub (3) by being connected to the holders (13), thus providing material and labor savings.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
PCT/EP2017/077881 2016-12-08 2017-10-31 A washing machine wherein the electric motor is integrated to the tub WO2018127314A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TRA2016/18089 2016-12-08
TR2016/18089A TR201618089A2 (es) 2016-12-08 2016-12-08

Publications (1)

Publication Number Publication Date
WO2018127314A1 true WO2018127314A1 (en) 2018-07-12

Family

ID=60450589

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/077881 WO2018127314A1 (en) 2016-12-08 2017-10-31 A washing machine wherein the electric motor is integrated to the tub

Country Status (2)

Country Link
TR (1) TR201618089A2 (es)
WO (1) WO2018127314A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112663288A (zh) * 2020-12-15 2021-04-16 珠海格力电器股份有限公司 一种洗衣机

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0026018A1 (fr) * 1979-09-19 1981-04-01 Constructions Electro-Mecaniques D'amiens Machine à laver et à essorer le linge à entraînement du tambour par courroie immergée
EP0354158A2 (en) * 1988-08-02 1990-02-07 Emerson Electric Co. Minimum height motor assembly using aluminum endshields
EP1707660A1 (en) * 2005-04-01 2006-10-04 Askoll Holding S.r.l. Improved washing-machine and similar household appliances with rotary drum
WO2009040258A1 (en) 2007-09-27 2009-04-02 Appliances Components Companies S.P.A. Rotating-drum clothes washing machine, or similar household appliance, provided with a fastening arrangement for an electric motor
US20130055771A1 (en) 2010-07-21 2013-03-07 Panasonic Corporation Brushless motor for washing machine and drum-type washing machine provided with same
WO2013046491A1 (ja) * 2011-09-27 2013-04-04 パナソニック株式会社 洗濯機用モータ
EP2620537A1 (en) * 2012-01-26 2013-07-31 Electrolux Home Products Corporation N.V. Laundry washing machine
WO2013182931A2 (en) 2012-05-22 2013-12-12 BSH Bosch und Siemens Hausgeräte GmbH Electrical household appliance with motor fixing system
EP3064632A1 (en) 2015-03-04 2016-09-07 Samsung Electronics Co., Ltd. Drum type washing machine

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0026018A1 (fr) * 1979-09-19 1981-04-01 Constructions Electro-Mecaniques D'amiens Machine à laver et à essorer le linge à entraînement du tambour par courroie immergée
EP0354158A2 (en) * 1988-08-02 1990-02-07 Emerson Electric Co. Minimum height motor assembly using aluminum endshields
EP1707660A1 (en) * 2005-04-01 2006-10-04 Askoll Holding S.r.l. Improved washing-machine and similar household appliances with rotary drum
WO2009040258A1 (en) 2007-09-27 2009-04-02 Appliances Components Companies S.P.A. Rotating-drum clothes washing machine, or similar household appliance, provided with a fastening arrangement for an electric motor
US20130055771A1 (en) 2010-07-21 2013-03-07 Panasonic Corporation Brushless motor for washing machine and drum-type washing machine provided with same
WO2013046491A1 (ja) * 2011-09-27 2013-04-04 パナソニック株式会社 洗濯機用モータ
EP2620537A1 (en) * 2012-01-26 2013-07-31 Electrolux Home Products Corporation N.V. Laundry washing machine
WO2013182931A2 (en) 2012-05-22 2013-12-12 BSH Bosch und Siemens Hausgeräte GmbH Electrical household appliance with motor fixing system
EP3064632A1 (en) 2015-03-04 2016-09-07 Samsung Electronics Co., Ltd. Drum type washing machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112663288A (zh) * 2020-12-15 2021-04-16 珠海格力电器股份有限公司 一种洗衣机

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Publication number Publication date
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