IT1181077B - SPEED VARIATOR FOR WASHING MACHINES - Google Patents

SPEED VARIATOR FOR WASHING MACHINES

Info

Publication number
IT1181077B
IT1181077B IT45723/84A IT4572384A IT1181077B IT 1181077 B IT1181077 B IT 1181077B IT 45723/84 A IT45723/84 A IT 45723/84A IT 4572384 A IT4572384 A IT 4572384A IT 1181077 B IT1181077 B IT 1181077B
Authority
IT
Italy
Prior art keywords
pulley
speed variator
driving pulley
flyweights
different
Prior art date
Application number
IT45723/84A
Other languages
Italian (it)
Other versions
IT8445723A0 (en
IT8445723A1 (en
Inventor
Piero Durazzani
Original Assignee
Zanussi Elettrodomestici
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 Zanussi Elettrodomestici filed Critical Zanussi Elettrodomestici
Priority to IT45723/84A priority Critical patent/IT1181077B/en
Publication of IT8445723A0 publication Critical patent/IT8445723A0/en
Priority to DE8585111188T priority patent/DE3581461D1/en
Priority to AT85111188T priority patent/ATE60379T1/en
Priority to EP85111188A priority patent/EP0175218B1/en
Priority to ES1985288982U priority patent/ES288982Y/en
Publication of IT8445723A1 publication Critical patent/IT8445723A1/en
Application granted granted Critical
Publication of IT1181077B publication Critical patent/IT1181077B/en

Links

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Centrifugal Separators (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Detergent Compositions (AREA)
  • Pulleys (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

A speed variator for a laundry washing machine comprising a drum (6) mounted in a laundering tub (5) and adapted to be rotated at different speeds by a motor (7) via a transmission belt (8) interconnecting a driving pulley (9) of the motor and a driven pulley (10) associated with the drum. The speed variator includes the driving pulley (9) which is provided with flyweights (16) housed in a cavity (15) of the pulley and radially expandable for varying the effective diameter of the pulley and thus the transmission ratio. The speed variator additionally includes a hydraulic piston (17) guided in a cylinder (18) connected to the water supply circuit of the machine via a solenoid valve (19) displacement between different operating positions, said piston cooperating with the flyweights for interdicting or permitting the radial expansion thereof to varying degrees. The internal cavity (15) of the driving pulley (9) is defined by planar or arcuate surface portions (25-29 and 31-35, respectively) interconnected by inclined ramps or arcuate transitions of different radius of curvature, respectively, permitting the flyweights (16) to radially expand to and be retained in different positions depending on the rotational speed of the driving pulley and the operating position assumed by the piston (17).
IT45723/84A 1984-09-18 1984-09-18 SPEED VARIATOR FOR WASHING MACHINES IT1181077B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
IT45723/84A IT1181077B (en) 1984-09-18 1984-09-18 SPEED VARIATOR FOR WASHING MACHINES
DE8585111188T DE3581461D1 (en) 1984-09-18 1985-09-04 INTERCHANGEABLE GEARBOX FOR WASHING MACHINE.
AT85111188T ATE60379T1 (en) 1984-09-18 1985-09-04 TRANSMISSION FOR WASHING MACHINE.
EP85111188A EP0175218B1 (en) 1984-09-18 1985-09-04 Speed variator for laundry washing machine
ES1985288982U ES288982Y (en) 1984-09-18 1985-09-11 VELOCITY DRIVE FOR WASHING MACHINE.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT45723/84A IT1181077B (en) 1984-09-18 1984-09-18 SPEED VARIATOR FOR WASHING MACHINES

Publications (3)

Publication Number Publication Date
IT8445723A0 IT8445723A0 (en) 1984-09-18
IT8445723A1 IT8445723A1 (en) 1986-03-18
IT1181077B true IT1181077B (en) 1987-09-23

Family

ID=11257719

Family Applications (1)

Application Number Title Priority Date Filing Date
IT45723/84A IT1181077B (en) 1984-09-18 1984-09-18 SPEED VARIATOR FOR WASHING MACHINES

Country Status (5)

Country Link
EP (1) EP0175218B1 (en)
AT (1) ATE60379T1 (en)
DE (1) DE3581461D1 (en)
ES (1) ES288982Y (en)
IT (1) IT1181077B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017025010A1 (en) * 2015-08-07 2017-02-16 青岛海尔洗衣机有限公司 Washing machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1234687B (en) * 1989-02-23 1992-05-26 Zanussi A Spa Industrie SPEED VARIATOR FOR WASHING MACHINES.
JP6675841B2 (en) * 2015-08-28 2020-04-08 青島海爾洗衣机有限公司ＱｉｎｇＤａｏ Ｈａｉｅｒ Ｗａｓｈｉｎｇ Ｍａｃｈｉｎｅ Ｃｏ．，Ｌｔｄ． Washing machine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1238265A (en) * 1959-04-16 1960-08-12 Esswein & Cie Control device for variable speed drives, in particular for washing machines
FR85206E (en) * 1964-02-03 1965-07-02 Thomson Houston Comp Francaise Autonomous multi-speed drive unit
DE2045732B2 (en) * 1970-09-16 1973-08-02 Siemens AG, 1000 Berlin u. 8000 München V-BELT V-BELT VARIATOR, IN PARTICULAR FOR DRIVING A WASHING MACHINE
GB1393134A (en) * 1971-06-11 1975-05-07 Siemens Ag Centrifugal devices
IT1174955B (en) * 1983-12-23 1987-07-01 Zanussi A Spa Industrie SPEED VARIATOR FOR WASHING MACHINES

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017025010A1 (en) * 2015-08-07 2017-02-16 青岛海尔洗衣机有限公司 Washing machine
EP3333304A4 (en) * 2015-08-07 2019-04-24 Qingdao Haier Washing Machine Co., Ltd. Washing machine

Also Published As

Publication number Publication date
ES288982U (en) 1986-06-16
ES288982Y (en) 1987-03-01
EP0175218A2 (en) 1986-03-26
ATE60379T1 (en) 1991-02-15
IT8445723A0 (en) 1984-09-18
IT8445723A1 (en) 1986-03-18
EP0175218A3 (en) 1987-08-12
EP0175218B1 (en) 1991-01-23
DE3581461D1 (en) 1991-02-28

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