EP0483909B1 - Device for halting a drum in the loading and unloading position in a top-loading washing machine - Google Patents

Device for halting a drum in the loading and unloading position in a top-loading washing machine Download PDF

Info

Publication number
EP0483909B1
EP0483909B1 EP91202725A EP91202725A EP0483909B1 EP 0483909 B1 EP0483909 B1 EP 0483909B1 EP 91202725 A EP91202725 A EP 91202725A EP 91202725 A EP91202725 A EP 91202725A EP 0483909 B1 EP0483909 B1 EP 0483909B1
Authority
EP
European Patent Office
Prior art keywords
drum
washing machine
movable member
pulley
loading
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.)
Expired - Lifetime
Application number
EP91202725A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0483909A1 (en
Inventor
Daniele C/O Internationaal Octrooibureau Turetta
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.)
Whirlpool Europe BV
Original Assignee
Whirlpool Europe BV
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 Whirlpool Europe BV filed Critical Whirlpool Europe BV
Publication of EP0483909A1 publication Critical patent/EP0483909A1/en
Application granted granted Critical
Publication of EP0483909B1 publication Critical patent/EP0483909B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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 
    • D06F37/302—Automatic drum positioning

Definitions

  • This invention relates to a top loading washing machine comprising a drum and a device for halting the drum in the loading and unloading position.
  • EP-A-347393 discloses a device for halting the drum in the loading and unloading position comprising a movable member arranged to cooperate with a recess in the peripheral edge of the pulley associated with the drum.
  • the movable member is driven by a cam rotated by a geared motor, which is independent from the main washing motor.
  • FR-A-2296719 discloses a device for halting the electric motor of a washing machine comprising a sensor which cooperates with a cam rotating with the driving pulley.
  • FR-A-1526837 discloses a device similar to that described in FR-A-2296719, in which the electro-mechanical sensor is replaced by an optical sensor.
  • An object of the present invention is to provide a device of the aforesaid type which is operationally reliable and provides precise halting of the drum in the loading and unloading position.
  • a further object is to provide a device of the aforesaid type which is of low cost, of simple construction and can be fitted to washing machines of known construction with only slight modification to them.
  • a washing machine comprises a drum 1 provided with a loading-unloading aperture 2 having its own closure door 3 (shown in the open position in Figure 1).
  • a pulley 4 is fixed to the drum in any known manner, and is connected to a second pulley 5 by a belt 6 or similar transmission member.
  • the pulley 5 is connected to the output shaft 7 of a usual electric motor 8 which when operated in known manner by a timer 9 rotates the drum 1 during the various wash stages of the washing machine.
  • a device is associated with said machine to halt its drum in the loading and unloading position each time the machine stops.
  • Said device comprises a pin 15 carrying at one end 16 a roller or wheel 17 to cooperate with the peripheral edge 18 of the pulley 4 associated with the drum 1.
  • This pulley comprises in its edge 18 a recess 19 in a position corresponding with the aperture 2 in said drum.
  • the pin 15 cooperates with a coil 20 within which said pin can slide (arrows F and G of Figure 1), said coil being connected to the timer 9 via an electrical line 9A.
  • the pin 15 At its other end 21, distant from the end 16, the pin 15 is provided with a collar 22 which retains one end 23 of a compression spring 24 mounted about said pin.
  • the other end 25 of the spring 24 cooperates with the coil 20 (or with a support member for it).
  • the end 23 of the pin 15 cooperates with a part 26, urged by a spring 26A, of a switch 27 connected to the power line (not shown) of the motor 8.
  • the timer 9 is also connected to said motor 8 in known manner (for example via an electrical line 30).
  • the device of the invention is fitted in any known manner within the usual cabinet of the washing machine.
  • the timer 9 in known manner causes the motor 8 to rotate the drum at a very low speed (eg. 15 r.p.m.). At the same time the coil is powered with direct current so that the electromagnetic field generated within it draws the pin 15 close to the pulley 4.
  • roller 17 reaches the edge 18 of said pulley and presses against it.
  • the switch interrupts the power feed to the motor 8 in known manner, so that it stops.
  • the drum 1 is retained in the loading and unloading position either by coupling means of known type or by the pin 15.
  • the timer 9 powers the coil 20 until power is totally switched off from the washing machine. This powering of the coil 20 enables the pin 15 to overcome the action of the spring 24 which would otherwise tend to return it to its initial position distanced from the pulley 4.
  • a permanent magnet can be associated with the end 16 of said pin (in proximity to the roller 17) to cooperate with another permanent magnet associated with the pulley 4 at said recess.
  • the coil 20 is powered only for the time required to halt the motor 8. After power is switched off from the coil 20, the pin is retained at the pulley 4 by the cooperation between said permanent magnets.
  • a further embodiment can comprise two superposed coils arranged about the pin, the first coil being powered by the timer 9 to draw the pin to the pulley 4, and the second coil being powered by the timer to withdraw it.
  • the actuator for moving the pin 15 can be of a type other than the described electromagnetic type.
  • the pin 15 is connected to one end 40 of an arm 44 pivoted at 42 to a fixed support element 43.
  • the other end 48 of the spring 46 cooperates with a movable element 49 connected to a thermal actuator 50.
  • This latter can be of the known type containing a PTC (positive temperature coefficient) resistor which, when powered under the control of the timer 9 in any known manner, causes the element 49 to move towards the arm 41.
  • PTC positive temperature coefficient
  • the drum 1 moves at very low speed and at the same time the timer 9 powers the PTC resistor.
  • This generates heat which causes a usual element positioned in proximity to it (or in contact with it) to expand, and act on the element 49 to cause it to move towards the arm 41.
  • This movement firstly only compresses the spring 46, but then causes the end 44 of said arm to lower and the end 40 to rise, consequently moving the roller 17 to the edge 18 of the pulley.
  • the motor 8 stops when the roller penetrates into the recess 19, as already described.
  • the PTC resistor is immersed in a volume of wax which, on expanding under the heat generated by said electrical member, results in said movement of the element 49.
  • the thermal actuator has therefore the same purpose as the "electromagnetic" coil-type actuator of Figures 1 and 2. However, it has a different operating time, even though it is reliable.
  • the case in which the drum is positioned at the end of the washing machine wash cycle has been considered. However the operation of the device is identical when the user stops the machine during washing.
  • the timer 9 is modified such that after stopping the washing machine, it operates the motor 8 in any known manner to rotate the drum at low speed and (in the already described manner) powers the device for halting the drum in the loading and unloading position.
  • the device of the invention is of simple construction, and can also be used on machines of usual production by slightly modifying them (for example in terms of the drum pulley).
  • the device is also reliable and enables the drum to be correctly halted in the loading and unloading position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Centrifugal Separators (AREA)
EP91202725A 1990-10-30 1991-10-22 Device for halting a drum in the loading and unloading position in a top-loading washing machine Expired - Lifetime EP0483909B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2191590 1990-10-30
IT02191590A IT1246485B (it) 1990-10-30 1990-10-30 Dispositivo per l'arresto di un cestello nella posizione di carico- scarico in una lavabiancheria del tipo a carica dall'alto

Publications (2)

Publication Number Publication Date
EP0483909A1 EP0483909A1 (en) 1992-05-06
EP0483909B1 true EP0483909B1 (en) 1996-03-20

Family

ID=11188723

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91202725A Expired - Lifetime EP0483909B1 (en) 1990-10-30 1991-10-22 Device for halting a drum in the loading and unloading position in a top-loading washing machine

Country Status (3)

Country Link
EP (1) EP0483909B1 (it)
DE (1) DE69118102T2 (it)
IT (1) IT1246485B (it)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19948622B4 (de) * 1998-10-09 2007-08-23 Elbi International S.P.A. Stellungs-Sensorvorrichtung für die Wäschetrommel einer Maschine zur Wäschebehandlung
WO2021032102A1 (zh) * 2019-08-20 2021-02-25 青岛海尔滚筒洗衣机有限公司 一种定位装置及洗衣机

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT231987Y1 (it) * 1993-12-07 1999-08-10 Zanussi Elettrodomestici Lavabiancheria a carica dall'alto con posizionamento perfezionato del cesto
DE19632008A1 (de) * 1996-08-08 1998-02-12 Miele & Cie Mantelbeschickbare Trommelwaschmaschine
US6363756B1 (en) * 1998-11-09 2002-04-02 Fisher & Paykel Limited Top loading laundry appliance
CN1223720C (zh) * 1998-11-09 2005-10-19 菲舍尔和佩克尔有限公司 顶部填装的洗衣机
FR2788791B1 (fr) * 1999-01-27 2001-04-13 Electrolux Syst Blanchisserie Procede d'indexage en pratique d'un tambour de lave-linge et lave-linge mettant en oeuvre ce procede
US6968632B2 (en) 2002-04-10 2005-11-29 Fisher & Paykel Appliances Limited Laundry appliance
US7249742B2 (en) 2002-04-10 2007-07-31 Fisher & Paykel Appliances Limited Self-levelling foot arrangement for an appliance
WO2003087459A1 (en) 2002-04-10 2003-10-23 Fisher & Paykel Appliances Limited A laundry appliance
FR2894601B1 (fr) * 2005-12-13 2008-01-11 Brandt Ind Sas Dispositif et procede de positionnement d'un tambour rotatif d'une machine a laver et/ou secher le linge
US8522451B2 (en) 2008-07-02 2013-09-03 Whirlpool Corporation Method for spraying treating chemistry in a dispensing dryer
CN103835093B (zh) * 2014-03-06 2016-04-06 江苏海狮机械集团有限公司 隔离式洗涤装置
CN109518402B (zh) * 2017-09-18 2024-03-26 佛山市顺德海尔电器有限公司 衣物处理设备及其定位装置
CN111041782B (zh) * 2018-10-12 2022-11-18 青岛海尔洗衣机有限公司 一种滚筒洗衣机
CN111041760B (zh) * 2018-10-12 2023-04-07 青岛海尔洗衣机有限公司 一种滚筒洗衣机
CN111041758B (zh) * 2018-10-12 2023-08-18 青岛海尔洗衣机有限公司 一种滚筒洗衣机
CN111118806B (zh) * 2018-10-12 2023-09-05 青岛海尔洗衣机有限公司 一种滚筒洗衣机
CN112856972B (zh) * 2021-03-29 2025-05-06 中山市仁器互联技术有限公司 滚筒烘干机
WO2022233228A1 (zh) * 2021-05-07 2022-11-10 青岛海尔滚筒洗衣机有限公司 一种定位环及洗衣机
CN115478411A (zh) * 2021-06-16 2022-12-16 青岛海尔滚筒洗衣机有限公司 一种衣物处理设备的洗涤筒的定位单元及衣物处理设备
CN118166523A (zh) * 2023-12-26 2024-06-11 珠海格力电器股份有限公司 一种顶开式滚筒洗衣机以及控制方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1526873A (fr) * 1966-08-25 1968-05-31 Sedelem Soc D Etudes Et De Dev Dispositif d'arrêt automatique d'une pièce tournante, en particulier le tambour d'une machine à laver et à essorer le linge
FR2296719A1 (fr) * 1974-12-30 1976-07-30 Chalectro Cie Machines Laver L Machine a laver le linge
IT1218255B (it) * 1988-06-17 1990-04-12 Smeg Spa Dispositivo di bloccaggio automatico in una posizione prefissata del cestello di lavaggio di macchine lavabiancheria

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19948622B4 (de) * 1998-10-09 2007-08-23 Elbi International S.P.A. Stellungs-Sensorvorrichtung für die Wäschetrommel einer Maschine zur Wäschebehandlung
WO2021032102A1 (zh) * 2019-08-20 2021-02-25 青岛海尔滚筒洗衣机有限公司 一种定位装置及洗衣机

Also Published As

Publication number Publication date
IT1246485B (it) 1994-11-19
IT9021915A1 (it) 1992-04-30
DE69118102T2 (de) 1996-10-02
EP0483909A1 (en) 1992-05-06
IT9021915A0 (it) 1990-10-30
DE69118102D1 (de) 1996-04-25

Similar Documents

Publication Publication Date Title
EP0483909B1 (en) Device for halting a drum in the loading and unloading position in a top-loading washing machine
US4831364A (en) Drilling machine
EP3541982A1 (en) Heating system for an apparatus for the treatment of textiles
US4137860A (en) Electrical drive system for a sewing machine
US5957362A (en) Device for fitting rivets or control therefor
KR102507670B1 (ko) 세탁기 및 이의 제어방법
US3123355A (en) Lessig
US3266168A (en) Domestic dryer apparatus
US3587797A (en) Dual speed clutches with brake
US4139808A (en) Control apparatus for electrically driven sewing machine
EP0312065B1 (en) Safety device for a laundry drier
KR102042915B1 (ko) 전동식 자동 풍향 회동 장치가 내장된 모발건조기
US3558127A (en) Sheet handling apparatus
EP0387942A1 (en) Method and device for locking the drum of a top-loading washing machine in a suitable position
US5178081A (en) Metering device for sewing machines
EP0381022B1 (en) A door locking means for a washing and/or drying machine for laundry
US4331092A (en) Pattern cam positioning means in stopping device for sewing machines
FR2446008A1 (fr) Dispositif de pas a pas pour programmateur electrodomestique
US3602050A (en) Programmers for electric household appliances
US3596743A (en) Control system for automatic stopping of a machine element in a predetermined position
GB1502027A (en) Thread storing and feeding device
US4320494A (en) Switch device for a turntable
KR100476962B1 (ko) 1조식 세탁기의 클러치 제어방법
GB1401043A (en) Variable speed sewing machine drive control system
EP0401768A3 (en) A control device for driving the drum of a washing or drying machine for laundry

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB

17P Request for examination filed

Effective date: 19921030

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: WHIRLPOOL EUROPE B.V.

17Q First examination report despatched

Effective date: 19940607

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REF Corresponds to:

Ref document number: 69118102

Country of ref document: DE

Date of ref document: 19960425

ET Fr: translation filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19961009

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19961014

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19961221

Year of fee payment: 6

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19971022

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19971031

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19971022

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980701

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST