IT1181077B - SPEED VARIATOR FOR WASHING MACHINES - Google Patents
SPEED VARIATOR FOR WASHING MACHINESInfo
- 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
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)
- Cleaning By Liquid Or Steam (AREA)
- Pulleys (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Detergent Compositions (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).
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)
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)
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)
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 |
-
1984
- 1984-09-18 IT IT45723/84A patent/IT1181077B/en active
-
1985
- 1985-09-04 EP EP85111188A patent/EP0175218B1/en not_active Expired - Lifetime
- 1985-09-04 AT AT85111188T patent/ATE60379T1/en active
- 1985-09-04 DE DE8585111188T patent/DE3581461D1/en not_active Expired - Fee Related
- 1985-09-11 ES ES1985288982U patent/ES288982Y/en not_active Expired
Cited By (2)
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 |
---|---|
IT8445723A0 (en) | 1984-09-18 |
DE3581461D1 (en) | 1991-02-28 |
ES288982U (en) | 1986-06-16 |
ES288982Y (en) | 1987-03-01 |
EP0175218B1 (en) | 1991-01-23 |
ATE60379T1 (en) | 1991-02-15 |
EP0175218A3 (en) | 1987-08-12 |
IT8445723A1 (en) | 1986-03-18 |
EP0175218A2 (en) | 1986-03-26 |
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