EP0384149A1 - Vorrichtung zur Erzeugung unterschiedlicher Drehzahlen für eine Waschmaschine - Google Patents

Vorrichtung zur Erzeugung unterschiedlicher Drehzahlen für eine Waschmaschine Download PDF

Info

Publication number
EP0384149A1
EP0384149A1 EP90101525A EP90101525A EP0384149A1 EP 0384149 A1 EP0384149 A1 EP 0384149A1 EP 90101525 A EP90101525 A EP 90101525A EP 90101525 A EP90101525 A EP 90101525A EP 0384149 A1 EP0384149 A1 EP 0384149A1
Authority
EP
European Patent Office
Prior art keywords
speed variator
drum
flyweight
speed
flyweights
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.)
Granted
Application number
EP90101525A
Other languages
English (en)
French (fr)
Other versions
EP0384149B1 (de
Inventor
Luciano Valent
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.)
Industrie Zanussi SpA
Original Assignee
Industrie Zanussi SpA
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 Industrie Zanussi SpA filed Critical Industrie Zanussi SpA
Priority to AT90101525T priority Critical patent/ATE93906T1/de
Publication of EP0384149A1 publication Critical patent/EP0384149A1/de
Application granted granted Critical
Publication of EP0384149B1 publication Critical patent/EP0384149B1/de
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 
    • D06F37/36—Driving arrangements  for rotating the receptacle at more than one speed

Definitions

  • the present invention relates to a speed variator for a laundry washing machine, which is configured to ensure its silent and reliable operation.
  • Conventional laundry washing machines are equipped with a speed variator operable to rotate the drum of the respective machine at variable transmission ratios and substantially comprising a variable-diameter driving pulley fixedly mounted on the output shaft of the electric motor of the machine and connected by a transmission V-belt to a corresponding driven pulley fixedly mounted on the shaft of the drum, said driving pulley being provided with radially displace­able flyweights dimensioned and designed to be directly displaceable from radially contracted first position corresponding to the laundering speed of the drum, to a radially expanded second position corresponding to the maximum spin-drying speed of the machine, and back again to the first position.
  • a speed variator of this type is obtained by the incorp­oration therein of the structural characteristics described with particular reference to the claims of the present application.
  • a speed variator 5 for a laundry washing machine operable to control the rotation of the drum 6 of the machine at variable transmission ratios, and comprising a driving pulley 7 adapted to be rotated by an electric motor 8 of the machine and connected by a transmission V-belt 9 to a driven pulley 10 fixedly secured to the rotatable shaft 11 of drum 6.
  • driving pulley 7 is composed of a disc 12 fixedly mounted on the output shaft 13 of motor 8, a disc 14 mounted for axial displacement on shaft 13 relative to disc 12, and a further disc 15 secured to the end of output shaft 13, discs 12 and 14 cooperating to form a V-shaped groove 16 for the accommodation therein of V-belt 9.
  • Discs 14 and 15 on their part cooperate to define at least one internal cavity 17 therebetween, formed with seats 18 for the accommodation therein of a corresponding number of radially displaceable flyweights 19 of preferably cylind­rical shape (cf. also fig. 3).
  • motor 8 thus results in the rotation of driving pulley 7 in unison with flyweights 19.
  • Motor 8 is advantageously designed to rotate drum 6 at two different speeds, specifically at a lower laundering speed and a higher spin-drying speed; the motor may also be designed, however, to operate at a greater number of different speeds.
  • Flyweights 19 on their part are dimensioned and designed to radially expand in response to the operation of motor 8 at the spin-drying speed, to thereby cause movable disc 14 to be axially displaced towards fixed disc 12, with the consequent variation of the effective diameter of driving pulley 7.
  • V-belt 9 is displaced between different diameters of driving pulley 9, specifically between a minimum diameter as shown in fig. 1 and a maximum effective diameter illustrated in fig. 2, corresponding respectively to the laundering speed and the spin-drying speed of motor 8, to thereby rotate drum 6 at different transmission ratios.
  • each flyweight 19 is subdivided into at least two symmetrically identical metal components 20 and 21 adapted to be joined to one another by the interposition therebetween of at least one elastic element 22 made of rubber or a similarly elastic material capable of dampening mechanical loads (cf. figs. 3 and 4).
  • Elastic element 22 is formed with a central flange 23 of circular shape and two cylindrical portions 24 and 25 projecting laterally from flange 23 and adapted to be inserted by the exertion thereon of a slight force into corresponding blind bores 26 and 27 formed respectively in the two components 20 and 21 of flyweight 19.
  • Each cylindrical portion 24 and 25 is formed with a central recess 28 and 29, respectively, of preferably conical shape extending thereinto from the respective outer end face, and with a number of grooves or slots 30 and 31, respectively, extending over the full length of the outer surface of the respective portion.
  • Conical recesses 28 and 29 serve the purpose of permitting the material of the cylindrical portion 24 and 25 of elastic element 22 to resiliently yield to mechanical loads, so that, thanks to the abutment of the central flange 23 of the elastic element on the respective end faces of the two components 20 and 21 of flyweight 19, the elastic element 22 is capable of effectively absorbing and dampening the mechanical loads transmitted axially through the flyweight during the operation of the speed variator.
  • the axial grooves or slots 30 and 31 serve the purpose of permitting air to escape from the blind bores 26 and 27 of the two parts 20 and 21, respectively, of flyweight 19 when the cylindrical portions 24 and 25 of elastic element 22 are inserted thereinto during assembly of flyweight 19, to thereby establish a state of equilibrium between the air pressure within the respective blind bore and the outside air pressure,resulting in the correct posit­ ioning of the cylindrical portions in the respective blind bores during the operation of the laundry washing machine.
  • the central flange 23 of the respective elastic element 22 is addionally capable of effectively absorbing and dampening mechanical loads acting on the flyweight in the radial direction, thanks to the elastic yielding of the material of the flange when coming into contact with the wall of the respective seat 18 formed in the speed variator for the accommodation of the respective flyweight.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
  • Centrifugal Separators (AREA)
  • Detergent Compositions (AREA)
EP90101525A 1989-02-23 1990-01-25 Vorrichtung zur Erzeugung unterschiedlicher Drehzahlen für eine Waschmaschine Expired - Lifetime EP0384149B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90101525T ATE93906T1 (de) 1989-02-23 1990-01-25 Vorrichtung zur erzeugung unterschiedlicher drehzahlen fuer eine waschmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8945712A IT1234687B (it) 1989-02-23 1989-02-23 Variatore di velocita' per macchine lavabiancheria.
IT4571289 1989-02-23

Publications (2)

Publication Number Publication Date
EP0384149A1 true EP0384149A1 (de) 1990-08-29
EP0384149B1 EP0384149B1 (de) 1993-09-01

Family

ID=11257536

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90101525A Expired - Lifetime EP0384149B1 (de) 1989-02-23 1990-01-25 Vorrichtung zur Erzeugung unterschiedlicher Drehzahlen für eine Waschmaschine

Country Status (5)

Country Link
EP (1) EP0384149B1 (de)
AT (1) ATE93906T1 (de)
DE (1) DE69002961T2 (de)
ES (1) ES2054112T3 (de)
IT (1) IT1234687B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017025010A1 (zh) * 2015-08-07 2017-02-16 青岛海尔洗衣机有限公司 洗衣机
WO2017036371A1 (zh) * 2015-08-28 2017-03-09 青岛海尔洗衣机有限公司 洗衣机
KR20180033298A (ko) * 2015-08-17 2018-04-02 칭다오 하이어 워싱 머신 캄파니 리미티드 세탁기

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129072A (en) * 1982-10-27 1984-05-10 Riccardo Bertolino Expanding pulley
US4496335A (en) * 1982-12-13 1985-01-29 Dayco Corporation Pulley construction and method of making the same
EP0175218A2 (de) * 1984-09-18 1986-03-26 INDUSTRIE ZANUSSI S.p.A. Wechselgetriebe für Waschmaschine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129072A (en) * 1982-10-27 1984-05-10 Riccardo Bertolino Expanding pulley
US4496335A (en) * 1982-12-13 1985-01-29 Dayco Corporation Pulley construction and method of making the same
EP0175218A2 (de) * 1984-09-18 1986-03-26 INDUSTRIE ZANUSSI S.p.A. Wechselgetriebe für Waschmaschine

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017025010A1 (zh) * 2015-08-07 2017-02-16 青岛海尔洗衣机有限公司 洗衣机
CN107849789A (zh) * 2015-08-07 2018-03-27 青岛海尔洗衣机有限公司 洗衣机
KR20180033299A (ko) * 2015-08-07 2018-04-02 칭다오 하이어 워싱 머신 캄파니 리미티드 세탁기
US20180216275A1 (en) * 2015-08-07 2018-08-02 Qingdao Haier Washing Machine Co., Ltd. Washing machine
EP3333304A4 (de) * 2015-08-07 2019-04-24 Qingdao Haier Washing Machine Co., Ltd. Waschmaschine
CN107849789B (zh) * 2015-08-07 2020-06-23 青岛胶南海尔洗衣机有限公司 洗衣机
KR20180033298A (ko) * 2015-08-17 2018-04-02 칭다오 하이어 워싱 머신 캄파니 리미티드 세탁기
CN107923110A (zh) * 2015-08-17 2018-04-17 青岛海尔洗衣机有限公司 洗衣机
CN107923110B (zh) * 2015-08-17 2020-05-12 青岛海尔洗衣机有限公司 洗衣机
WO2017036371A1 (zh) * 2015-08-28 2017-03-09 青岛海尔洗衣机有限公司 洗衣机
KR20180044392A (ko) * 2015-08-28 2018-05-02 칭다오 하이어 워싱 머신 캄파니 리미티드 세탁기
KR102032734B1 (ko) 2015-08-28 2019-10-16 칭다오 하이어 워싱 머신 캄파니 리미티드 세탁기

Also Published As

Publication number Publication date
EP0384149B1 (de) 1993-09-01
ATE93906T1 (de) 1993-09-15
DE69002961T2 (de) 1993-12-16
DE69002961D1 (de) 1993-10-07
IT1234687B (it) 1992-05-26
ES2054112T3 (es) 1994-08-01
IT8945712A0 (it) 1989-02-23

Similar Documents

Publication Publication Date Title
KR100504867B1 (ko) 인덕션모터를 구비한 드럼 세탁기
EP0384149B1 (de) Vorrichtung zur Erzeugung unterschiedlicher Drehzahlen für eine Waschmaschine
US3393572A (en) Variable pulley
US2718294A (en) Automatic, centrifugal clutch mechanisms
EP0147625B1 (de) Wechselgetriebe für eine Waschmaschine
KR20040094407A (ko) 다중 시동장치-발전기 수단을 구비하는 클러치-바이-와이어
EP0993098A2 (de) Vorrichtung zur Regelung eines Wechselstromgenerators für Fahrzeuge
EP0285072A2 (de) Treibriemen
EP0175218B1 (de) Wechselgetriebe für Waschmaschine
US3459061A (en) Variable diameter pulley construction
JPS5842854A (ja) ベルト式自動変速機
GB2137732A (en) Speed equalizing couplings
EP1662182B1 (de) Stufenloses Getriebe für Motor-Fahrzeuge
GB2129072A (en) Expanding pulley
US3088303A (en) Automatic washing machine having a variable speed drive
KR100276918B1 (ko) 벨트무단변속장치
EP1087156A2 (de) Stufenloses Getriebe mit Vorrichtung zur Einstellung der Axialkraft die auf die bewegliche Scheibenhälfte ausgeübt wird, als eine Funktion des übertragenen Drehmoments
IT1270268B (it) Variatore di velocita' con puleggia a diametro variabile
SU889955A1 (ru) Центробежна муфта
SU1418365A1 (ru) Центрифуга дл отжима текстильных изделий
FR2432572A1 (fr) Dispositif perfectionne pour la transmission du mouvement a une machine a laver le linge
KR940021807A (ko) 전자동 세탁기
JPH04219552A (ja) 車載補機の駆動装置
SU1076669A1 (ru) Бесступенчата передача
KR100286609B1 (ko) 자동차 밸트형무단변속기의 2웨이클러치

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): AT DE ES FR GB IT SE

17P Request for examination filed

Effective date: 19910214

17Q First examination report despatched

Effective date: 19920708

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE ES FR GB IT SE

REF Corresponds to:

Ref document number: 93906

Country of ref document: AT

Date of ref document: 19930915

Kind code of ref document: T

ET Fr: translation filed
REF Corresponds to:

Ref document number: 69002961

Country of ref document: DE

Date of ref document: 19931007

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

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2054112

Country of ref document: ES

Kind code of ref document: T3

26N No opposition filed
EAL Se: european patent in force in sweden

Ref document number: 90101525.5

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: AT

Payment date: 20021205

Year of fee payment: 14

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

Ref country code: FR

Payment date: 20021209

Year of fee payment: 14

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

Ref country code: GB

Payment date: 20021212

Year of fee payment: 14

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

Ref country code: DE

Payment date: 20021213

Year of fee payment: 14

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

Ref country code: SE

Payment date: 20021230

Year of fee payment: 14

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

Ref country code: ES

Payment date: 20030113

Year of fee payment: 14

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: 20040125

Ref country code: AT

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

Effective date: 20040125

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

Ref country code: SE

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

Effective date: 20040126

Ref country code: ES

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

Effective date: 20040126

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: 20040803

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20040125

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

Ref country code: FR

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

Effective date: 20040930

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050125

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20040126