EP0175218A3 - Speed variator for laundry washing machine - Google Patents

Speed variator for laundry washing machine Download PDF

Info

Publication number
EP0175218A3
EP0175218A3 EP85111188A EP85111188A EP0175218A3 EP 0175218 A3 EP0175218 A3 EP 0175218A3 EP 85111188 A EP85111188 A EP 85111188A EP 85111188 A EP85111188 A EP 85111188A EP 0175218 A3 EP0175218 A3 EP 0175218A3
Authority
EP
European Patent Office
Prior art keywords
pulley
speed variator
driving pulley
flyweights
different
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
EP85111188A
Other versions
EP0175218B1 (en
EP0175218A2 (en
Inventor
Piero Durazzani
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
Zanussi Elettrodomestici 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 Zanussi Elettrodomestici SpA filed Critical Zanussi Elettrodomestici SpA
Priority to AT85111188T priority Critical patent/ATE60379T1/en
Publication of EP0175218A2 publication Critical patent/EP0175218A2/en
Publication of EP0175218A3 publication Critical patent/EP0175218A3/en
Application granted granted Critical
Publication of EP0175218B1 publication Critical patent/EP0175218B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Centrifugal Separators (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Detergent Compositions (AREA)
  • Pulleys (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).
EP85111188A 1984-09-18 1985-09-04 Speed variator for laundry washing machine Expired - Lifetime EP0175218B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85111188T ATE60379T1 (en) 1984-09-18 1985-09-04 TRANSMISSION FOR WASHING MACHINE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT45723/84A IT1181077B (en) 1984-09-18 1984-09-18 SPEED VARIATOR FOR WASHING MACHINES
IT4572384 1984-09-18

Publications (3)

Publication Number Publication Date
EP0175218A2 EP0175218A2 (en) 1986-03-26
EP0175218A3 true EP0175218A3 (en) 1987-08-12
EP0175218B1 EP0175218B1 (en) 1991-01-23

Family

ID=11257719

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85111188A Expired - Lifetime EP0175218B1 (en) 1984-09-18 1985-09-04 Speed variator for laundry washing machine

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)

Families Citing this family (3)

* 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.
JP2017035202A (en) * 2015-08-07 2017-02-16 青島海爾洗衣机有限公司ＱｉｎｇＤａｏ Ｈａｉｅｒ Ｗａｓｈｉｎｇ Ｍａｃｈｉｎｅ Ｃｏ．，Ｌｔｄ． Washing machine
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

Citations (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
DE2045732A1 (en) * 1970-09-16 1972-03-23 Siemens Ag V-belt adjustment gear, especially for driving a washing machine
FR2141229A7 (en) * 1971-06-11 1973-01-19 Siemens Ag
EP0147625A2 (en) * 1983-12-23 1985-07-10 INDUSTRIE ZANUSSI S.p.A. Speed variator for a laundry washing machine

Patent Citations (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
DE2045732A1 (en) * 1970-09-16 1972-03-23 Siemens Ag V-belt adjustment gear, especially for driving a washing machine
FR2141229A7 (en) * 1971-06-11 1973-01-19 Siemens Ag
EP0147625A2 (en) * 1983-12-23 1985-07-10 INDUSTRIE ZANUSSI S.p.A. Speed variator for a laundry washing machine

Also Published As

Publication number Publication date
IT1181077B (en) 1987-09-23
ES288982Y (en) 1987-03-01
IT8445723A0 (en) 1984-09-18
ATE60379T1 (en) 1991-02-15
ES288982U (en) 1986-06-16
EP0175218B1 (en) 1991-01-23
EP0175218A2 (en) 1986-03-26
DE3581461D1 (en) 1991-02-28
IT8445723A1 (en) 1986-03-18

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