EP0214510B1 - Laundry washing machine - Google Patents

Laundry washing machine Download PDF

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Publication number
EP0214510B1
EP0214510B1 EP86111431A EP86111431A EP0214510B1 EP 0214510 B1 EP0214510 B1 EP 0214510B1 EP 86111431 A EP86111431 A EP 86111431A EP 86111431 A EP86111431 A EP 86111431A EP 0214510 B1 EP0214510 B1 EP 0214510B1
Authority
EP
European Patent Office
Prior art keywords
tub
brackets
lugs
laundry washing
hoop
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
Application number
EP86111431A
Other languages
German (de)
French (fr)
Other versions
EP0214510A2 (en
EP0214510A3 (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
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 AT86111431T priority Critical patent/ATE42589T1/en
Publication of EP0214510A2 publication Critical patent/EP0214510A2/en
Publication of EP0214510A3 publication Critical patent/EP0214510A3/en
Application granted granted Critical
Publication of EP0214510B1 publication Critical patent/EP0214510B1/en
Expired legal-status Critical Current

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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
    • D06F37/26—Casings; Tubs
    • D06F37/267—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups
    • 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
    • D06F37/26—Casings; Tubs
    • D06F37/267—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups
    • D06F37/268—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups for suspension devices

Definitions

  • the invention relates to a laundry washing machine equipped with a conventional laundering tub mounted in the housing of the machine in a novel manner.
  • Conventional laundry washing machines for domestic use are equipped with a metal laundering tub provided with suitable ballast weights and adapted to contain a rotatable drum.
  • the tub is mounted in the housing of the machine by upper suspension springs and lower vibration dampeners adapted to engage suitable metal brackets secured to the outer periphery of the tub and to the interior of the housing, respectively. (See for example GB-A-1 155 774).
  • the conventional laundering tub is additionally provided with further brackets or lugs secured to its outer periphery for mounting a motor assembly required for rotating the drum, and a pressure-sensing outlet for the connection thereto of a pressure switch.
  • a laundry washing machine comprising a laundering tub adapted to contain a drum mounted therein for rotation by means of at least one electric motor of conventional type supported by associated lugs, said tub being - mounted in the housing of the machine by means of suspension elements from above and vibration dampener elements of conventional type from below, said elements being adapted to be engaged with associated brackets, said machine being additionally provided with a pressure-sensing dome for the connection thereto of a pressure switch of conventional type, and being characterized by comprising at least one circular hoop of a plastic material adapted to be removably secured to the outer periphery of the tub in intimate engagement therewith, said hoop being integrally provided with said lugs, said brackets and said pressure-sensing dome, and being additionally formed with two backwards folded end portions adapted to be connected to one another by resilient means.
  • a domestic laundry washing machine 3 of the front-loading type provided with a metal laundering tub 4 adapted to contain a rotatable drum 5 and mounted within the housing 7 of the machine by means of upper suspension springs 8 and lower vibration dampeners 9 or similar elements of conventional type.
  • tub 4 is accomplished by means of a circular hoop 10 made of a plastic material and being of a small width than said tub, said hoop 10 being adapted to be removably secured to tub 4 in intimate engagement with the outer periphery thereof.
  • Hoop 10 is formed with two backwards bent end portions 11 and 12 adapted to be connected to one another by at least one tension spring 13 or the like for clamping hoop 10 in position on tub 4.
  • Integrally formed with hoop 10 are two pairs of brackets 14 and 15, two parallel lugs 16 and 17, and at least one pressure-sensing dome 18 for the connection thereto of a conventional pressure switch (not shown).
  • the pair of brackets 14 is adapted to be engaged by respective ends of suspension springs 8, the other ends of which are engaged with respective metal brackets 19 secured to upper portions of housing 7 of the machine.
  • the pair of brackets 15 on its part is adapted to have respective ends of vibration dampeners 9 hinged thereto, the other ends of vibration dampeners 9 being hinged to respective bearing brackets 20 secured to lower portions of housing 7.
  • Lugs 16 and 17 finally serve for supporting a conventional electric motor 21 required for rotating drum 5 by means of a belt transmission 22 in a per se known manner.
  • hoop 10 functioning as the carrying structure for the tub and drum assembly and for motor 21 and including pressure-sensing dome 18, it is thus possible to make the tub itself with a reduced wall thickness, resulting in a saving of material for its manufacture.
  • the hoop is a separately formed unit adapted to be applied to the tub by an automatized process by means of a robot or a similar machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Centrifugal Separators (AREA)

Abstract

A laundry washing machine comprising a laundering tub (4) and a circular hoop (10) made of a plastic material and adapted to be removably secured to the tub (4) in intimate engagement with the outer periphery thereof. In particular, the hoop is integrally formed with a number of brackets (14, 15) and a pair of lugs (16, 17) as well as with a pressure-sensing dome (18) for the connection thereto of a pressure switch. In this manner, the tub (4) can be mounted within the housing (7) of the machine by suspension springs (8) engaging respective brackets (14) from above, and vibration dampener elements (9) hingedly connected to respective brackets (15). The tub may additionally carry the motor (21) for rotating the drum (5) by the connection of the motor to the pair of lugs (16, 17).

Description

  • The invention relates to a laundry washing machine equipped with a conventional laundering tub mounted in the housing of the machine in a novel manner.
  • Conventional laundry washing machines for domestic use are equipped with a metal laundering tub provided with suitable ballast weights and adapted to contain a rotatable drum. The tub is mounted in the housing of the machine by upper suspension springs and lower vibration dampeners adapted to engage suitable metal brackets secured to the outer periphery of the tub and to the interior of the housing, respectively. (See for example GB-A-1 155 774).
  • The conventional laundering tub is additionally provided with further brackets or lugs secured to its outer periphery for mounting a motor assembly required for rotating the drum, and a pressure-sensing outlet for the connection thereto of a pressure switch.
  • Although a laundering tub of this construction is highly efficient and reliable in operation, there is the disadvantage that it has to assume the function of the carrying structure for the above described elements, by reason of which it has to be made with a considerable wall thickness for enabling it to sustain the relatively high mechanical stresses during the laundering and spindrying operations.
  • Consequently these laundering tubs require a considerable amount of material for their manufacture.
  • In addition, the various lugs, brackets and the like have to be prepared separately and to be subsequently secured to the tub in a time-consuming and cumbersome operation, resulting in a complicated structure.
  • It is an object of the invention to overcome the above described deficiencies by providing a laundry washing machine provided with novel means for mounting the laundering tub within the housing of the machine, thus permitting the wall thickness of the tub to be reduced, and the application of the described brackets, lugs and the like to the outer periphery of the tub to be avoided.
  • These and other objects are attained according to the invention by a laundry washing machine comprising a laundering tub adapted to contain a drum mounted therein for rotation by means of at least one electric motor of conventional type supported by associated lugs, said tub being - mounted in the housing of the machine by means of suspension elements from above and vibration dampener elements of conventional type from below, said elements being adapted to be engaged with associated brackets, said machine being additionally provided with a pressure-sensing dome for the connection thereto of a pressure switch of conventional type, and being characterized by comprising at least one circular hoop of a plastic material adapted to be removably secured to the outer periphery of the tub in intimate engagement therewith, said hoop being integrally provided with said lugs, said brackets and said pressure-sensing dome, and being additionally formed with two backwards folded end portions adapted to be connected to one another by resilient means.
  • The characteristics and advantages of the invention will become more clearly evident from the following description, given by way of example with reference to the accompanying drawings, wherein:
    • Fig. 1 shows a partially sectioned diagrammatic rear view of a laundry washing machine as a preferred embodiment of the invention, and
    • Fig. 2 shows a diagrammatical side view of a structural particular of the machine of Fig. 1.
  • With reference to the drawings, there is diagrammatically shown a domestic laundry washing machine 3 of the front-loading type, provided with a metal laundering tub 4 adapted to contain a rotatable drum 5 and mounted within the housing 7 of the machine by means of upper suspension springs 8 and lower vibration dampeners 9 or similar elements of conventional type.
  • In particular, the mounting of tub 4 is accomplished by means of a circular hoop 10 made of a plastic material and being of a small width than said tub, said hoop 10 being adapted to be removably secured to tub 4 in intimate engagement with the outer periphery thereof.
  • Hoop 10 is formed with two backwards bent end portions 11 and 12 adapted to be connected to one another by at least one tension spring 13 or the like for clamping hoop 10 in position on tub 4.
  • Integrally formed with hoop 10 are two pairs of brackets 14 and 15, two parallel lugs 16 and 17, and at least one pressure-sensing dome 18 for the connection thereto of a conventional pressure switch (not shown).
  • The pair of brackets 14 is adapted to be engaged by respective ends of suspension springs 8, the other ends of which are engaged with respective metal brackets 19 secured to upper portions of housing 7 of the machine.
  • The pair of brackets 15 on its part is adapted to have respective ends of vibration dampeners 9 hinged thereto, the other ends of vibration dampeners 9 being hinged to respective bearing brackets 20 secured to lower portions of housing 7.
  • Lugs 16 and 17 finally serve for supporting a conventional electric motor 21 required for rotating drum 5 by means of a belt transmission 22 in a per se known manner.
  • Thanks to the provision of hoop 10 functioning as the carrying structure for the tub and drum assembly and for motor 21 and including pressure-sensing dome 18, it is thus possible to make the tub itself with a reduced wall thickness, resulting in a saving of material for its manufacture.
  • The hoop, on the other hand, is a separately formed unit adapted to be applied to the tub by an automatized process by means of a robot or a similar machine.
  • Thanks to the fact, finally, that the hoop is provided with the brackets, lugs and the like, these elements do not have to be secured to the tub, resulting in a greatly simplified construction thereof.

Claims (2)

1. A laundry washing machine comprising a laundering tub adapted to contain a drum mounted therein for rotation by means of at least one electric motor of conventional type supported by associated lugs, said tub being mounted in the housing of the machine by means of suspension elements above and by means of vibration dampener elements of conventional type from below, said elements being adapted to be engaged with associated brackets, said machine being additionally provided with a pressure-sensing dome for the connection thereto of a pressure switch of conventioal type, and being characterized by comprising at least one circular hoop (10) of a plastic material adapted to be removably secured to the outer periphery of said tub (4) in intimate engagement therewith, said hoop (10) being integrally provided with said lugs (16, 17), said brackets (14, 15) and said pressure-sensing dome (18), and being additionally formed with two backwards folded end portions (11, 12) adapted to be connected to one another by resilient means (3).
2. A laundry washing machine according to claim 1, characterized in that said resilient means comprises at least one tension spring (13).
EP86111431A 1985-09-05 1986-08-19 Laundry washing machine Expired EP0214510B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86111431T ATE42589T1 (en) 1985-09-05 1986-08-19 WASHING MACHINE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT4573385 1985-09-05
IT45733/85A IT1187290B (en) 1985-09-05 1985-09-05 WASHING MACHINE

Publications (3)

Publication Number Publication Date
EP0214510A2 EP0214510A2 (en) 1987-03-18
EP0214510A3 EP0214510A3 (en) 1987-10-21
EP0214510B1 true EP0214510B1 (en) 1989-04-26

Family

ID=11257877

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86111431A Expired EP0214510B1 (en) 1985-09-05 1986-08-19 Laundry washing machine

Country Status (4)

Country Link
EP (1) EP0214510B1 (en)
AT (1) ATE42589T1 (en)
DE (1) DE3663044D1 (en)
IT (1) IT1187290B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT218167Z2 (en) * 1988-05-30 1992-04-08 Zanussi A Spa Industrie HEATING DEVICE FOR COMBINED MACHINE FOR WASHING AND DRYING THE LINEN.
ES2154534B1 (en) * 1998-02-02 2001-11-16 Balay Sa SYSTEM OF FIXING THE SHOCK ABSORBERS TO THE CUBA OF WASHING MACHINES.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1610059A1 (en) * 1966-07-20 1972-03-23 Suspa Federungstech Arrangement for supporting the vibrating drum system of a washing machine
GB1390498A (en) * 1971-04-16 1975-04-16 Hoover Ltd Washing machines

Also Published As

Publication number Publication date
IT8545733A0 (en) 1985-09-05
ATE42589T1 (en) 1989-05-15
EP0214510A2 (en) 1987-03-18
EP0214510A3 (en) 1987-10-21
IT1187290B (en) 1987-12-23
DE3663044D1 (en) 1989-06-01

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