EP0405068A1 - Verstärkter Laugenbehälter, insbesondere für Waschmaschinen - Google Patents

Verstärkter Laugenbehälter, insbesondere für Waschmaschinen Download PDF

Info

Publication number: EP0405068A1
Authority: EP; European Patent Office
Prior art keywords: tub; edge; reinforced; bottom edge; tub body
Prior art date: 1989-06-29
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

EP90106471A

Other languages

English (en)

French (fr)

Other versions

EP0405068B1 (de

Inventor

Antonio Dr. Merloni

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.)

Antonio Merloni SpA

Original Assignee

Antonio Merloni 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.)

1989-06-29

Filing date

1990-04-04

Publication date

1991-01-02

1990-04-04 Application filed by Antonio Merloni SpA filed Critical Antonio Merloni SpA

1991-01-02 Publication of EP0405068A1 publication Critical patent/EP0405068A1/de

1994-06-22 Application granted granted Critical

1994-06-22 Publication of EP0405068B1 publication Critical patent/EP0405068B1/de

2010-04-04 Anticipated expiration legal-status Critical

Status 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
- D06F37/26—Casings; Tubs
- D06F37/261—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements
- D06F37/263—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements assembled from at least two elements connected to each other; Connecting or sealing means therefor
- 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
- D06F37/264—Tubs provided with reinforcing structures, e.g. ribs, inserts, braces

Definitions

the present invention relates to a reinforced tub, particularly for laundry washing machines.
the known washing machines are generally provided with a horizontal rotary drum contained in a fixed tub to be loaded with laundry at the front side or from above.
the tub has a detachable wall for assembling the drum inside the tub and for the possible disassembling of the drum for repairing.
the detachable wall is usually secured to the tub body by means of a fastening strip, of truncated-cone shape, that tightens a gasket between the tub body and the back wall, providing a water tight seal during the operation of the machine.
a fastening system of the kind described above ensures that the two tub portions, the back wall and the tub body, remain integral and endure the remarkable mechanical stresses caused by the drum motion, especially during centrifugation.
tubs are usually made of stainless steel and, since this material is relatively expensive, there has been a trend to reduce as much as possible the thickness of the tub, by means of several contrivances.
the tub edge is made of an excessively thin sheet, the washing and centrifugation stresses bend and warp the sheet at the junction, causing the offset of the drum and water leaks, the back wall and the tub body not being securely integral.
the back wall is sometimes fastened to the tub body by means of a cast iron cross member lying outside the back wall and fastened to the junction edge.
This system raises the production cost of the washing machine because of the greater number of assembling operations and of component parts, and furthermore raises the weight of the tub.
the main aim of the present invention is to provide a reinforced tub for washing machines having such a fastening system of the tub body to the back wall to allow the use of thinner sheets for its construction, without jeopardizing the component parts resistance to the mechanical stress and the watertightness.
an object of the invention is to provide a reinforced tub easily, and therefore economically, produced from an industrial point of view.
a further object of the invention is to provide a reinforced tub having a long life and reliable fastening system between the tub body and the back wall, in terms of watertightness and mechanical resistance.
a reinforced tub particularly for laundry washing machines, comprising a back wall associated with a tub body, said tub body having a substantially cylindrical shape and comprising a bottom edge, characterized in that it comprises a further stiffening edge rigidly associated with said bottom edge.
the tub generally designated by the reference numeral 1 and adapted to contain a drum 14, comprises a tub body 2 and a back wall 3.
the tub body generally has a cylindrical shape and is formed from a flat sheet 2a, illustrated in Fig. 3, bent and joined along the edges 2b, as illustrated in Fig. 4.
the back wall 3 is fastened to the tub body bottom edge 4 which is conveniently bent to have a radial portion 5 adapted to cooperate with a similar radial portion 6 formed on the periphery of the back wall 3.
a gasket 7 is first interposed between the bottom edge 4 of the tub body 2 and the portion 6 of the back wall 3, and subsequently a fastening ring 8 is applied to fasten the back wall to the tub body.
the bottom edge 4 of the tub body is reinforced by means of a stiffening edge 9.
Figs. 5-7 show some of the possible shapes of the stiffening edge which may extend either almost exclusively within the radial portion 5 (the edge 4a of Fig.5), or beyond the radial portion 5 covering part of the tub body (edges 4b and 4c of Figs. 6 and 7).
the stiffening edge 9 is advantageously provided by bending the sheet 2a when it is still flat (Fig. 3), before the shaping operations, and optionally by welding it in order to ease the subsequent workings.
the edge 9 can also be provided by simply welding a sheet metal to the radial portion 5, without bending the bottom edge 4 of the tub.
An advantage of the invention is also due to the easy shaping operations for manufacturing the tub, and particularly for forming the stiffening edge, that do not further complicate the production cycle.
the reinforced tub according to the invention may have numerous modifications and variations, all within the inventive concept; furthermore, all the details may be substituted with technically equivalent elements.
the materials employed, as well as the dimensions, may be any according to the specific needs and the state of the art.

Landscapes

Engineering & Computer Science (AREA)
Textile Engineering (AREA)
Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
Rigid Containers With Two Or More Constituent Elements (AREA)

EP90106471A 1989-06-29 1990-04-04 Verstärkter Laugenbehälter, insbesondere für Waschmaschinen Expired - Lifetime EP0405068B1 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
IT8921025A IT1230168B (it)	1989-06-29	1989-06-29	Vasca rinforzata, particolarmente per macchine lavabiancheria.
IT2102589		1989-06-29

Publications (2)

Publication Number	Publication Date
EP0405068A1 true EP0405068A1 (de)	1991-01-02
EP0405068B1 EP0405068B1 (de)	1994-06-22

Family

ID=11175578

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP90106471A Expired - Lifetime EP0405068B1 (de)	1989-06-29	1990-04-04	Verstärkter Laugenbehälter, insbesondere für Waschmaschinen

Country Status (4)

Country	Link
EP (1)	EP0405068B1 (de)
DE (1)	DE69010088T2 (de)
ES (1)	ES2055206T3 (de)
IT (1)	IT1230168B (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP1498536A2 (de) *	2003-07-08	2005-01-19	LG Electronics Inc.	Trommelwaschmaschine
US7533548B2 (en)	2002-12-27	2009-05-19	Lg Electronics Inc.	Drum type washing machine
US7568366B2 (en)	2004-07-20	2009-08-04	Lg Electronics Inc.	Drum-type washing machine and bearing housing structure thereof
KR100987434B1 (ko)	2003-07-08	2010-10-13	엘지전자 주식회사	드럼세탁기용 터브
DE102021205433A1 (de)	2021-05-28	2022-12-01	BSH Hausgeräte GmbH	Laugenbehälter mit spezifischem Verbindungsbereich zwischen einem Hohlzylinder und einer Rückwand, sowie Haushaltsgerät

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP2314749A3 (de)	2002-12-27	2013-01-09	LG Electronics Inc.	Trommelwaschmaschine
ES2296424B1 (es) *	2004-02-06	2008-12-16	Bsh Electrodomesticos España S.A.	Refuerzo para tambor de maquina lavadora.
KR100651853B1 (ko)	2005-09-30	2006-12-01	엘지전자 주식회사	인서트사출형 베어링하우징조립체 및 이를 구비한캐비넷/터브 일체형 드럼세탁기
US7841220B2 (en)	2005-09-30	2010-11-30	Lg Electronics Inc.	Drum-type washing machine
US7536882B2 (en)	2006-03-29	2009-05-26	Lg Electronics Inc.	Drum type washing machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2633604A1 (de) *	1976-07-27	1978-02-02	Licentia Gmbh	Trommelbehaelter fuer eine stirnbeschickbare waschmaschine
EP0132805A2 (de) *	1983-07-29	1985-02-13	INDUSTRIE ZANUSSI S.p.A.	Laugenbehälter aus rostfreiem Stahl für Waschmaschine

1989
- 1989-06-29 IT IT8921025A patent/IT1230168B/it active
1990
- 1990-04-04 DE DE69010088T patent/DE69010088T2/de not_active Expired - Fee Related
- 1990-04-04 EP EP90106471A patent/EP0405068B1/de not_active Expired - Lifetime
- 1990-04-04 ES ES90106471T patent/ES2055206T3/es not_active Expired - Lifetime

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2633604A1 (de) *	1976-07-27	1978-02-02	Licentia Gmbh	Trommelbehaelter fuer eine stirnbeschickbare waschmaschine
EP0132805A2 (de) *	1983-07-29	1985-02-13	INDUSTRIE ZANUSSI S.p.A.	Laugenbehälter aus rostfreiem Stahl für Waschmaschine

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US7930910B2 (en)	2002-12-27	2011-04-26	Lg Electronics Inc.	Drum type washing machine
US7571625B2 (en)	2002-12-27	2009-08-11	Lg Electronics Inc.	Drum type washing machine
US8646292B2 (en)	2002-12-27	2014-02-11	Lg Electronics Inc.	Drum type washing machine
US8616027B2 (en)	2002-12-27	2013-12-31	Lg Electronics Inc.	Drum type washing machine
US7533548B2 (en)	2002-12-27	2009-05-19	Lg Electronics Inc.	Drum type washing machine
US8156770B2 (en)	2002-12-27	2012-04-17	Lg Electronics, Inc.	Drum type washing machine
JP2005028145A (ja) *	2003-07-08	2005-02-03	Lg Electronics Inc	ドラム式洗濯機
US7743480B2 (en)	2003-07-08	2010-06-29	Lg Electronics Inc.	Method of manufacturing a drum-type washing machine
EP1498536A2 (de) *	2003-07-08	2005-01-19	LG Electronics Inc.	Trommelwaschmaschine
KR100987434B1 (ko)	2003-07-08	2010-10-13	엘지전자 주식회사	드럼세탁기용 터브
US7451626B2 (en)	2003-07-08	2008-11-18	Lg Electronics Inc.	Drum-type washing machine
EP1498536A3 (de) *	2003-07-08	2006-10-04	LG Electronics Inc.	Trommelwaschmaschine
US7568366B2 (en)	2004-07-20	2009-08-04	Lg Electronics Inc.	Drum-type washing machine and bearing housing structure thereof
DE102021205433A1 (de)	2021-05-28	2022-12-01	BSH Hausgeräte GmbH	Laugenbehälter mit spezifischem Verbindungsbereich zwischen einem Hohlzylinder und einer Rückwand, sowie Haushaltsgerät

Also Published As

Publication number	Publication date
DE69010088T2 (de)	1995-03-02
IT8921025A0 (it)	1989-06-29
IT1230168B (it)	1991-10-14
EP0405068B1 (de)	1994-06-22
DE69010088D1 (de)	1994-07-28
ES2055206T3 (es)	1994-08-16

Legal Events

Date	Code	Title	Description
1990-11-16	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
1991-01-02	17P	Request for examination filed	Effective date: 19901005
1991-01-02	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): DE ES FR GB NL SE
1992-06-10	RAP1	Party data changed (applicant data changed or rights of an application transferred)	Owner name: ANTONIO MERLONI S.P.A.
1993-11-10	17Q	First examination report despatched	Effective date: 19930922
1994-05-06	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1994-06-22	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): DE ES FR GB NL SE
1994-07-28	REF	Corresponds to:	Ref document number: 69010088 Country of ref document: DE Date of ref document: 19940728
1994-08-16	REG	Reference to a national code	Ref country code: ES Ref legal event code: FG2A Ref document number: 2055206 Country of ref document: ES Kind code of ref document: T3
1994-08-19	ET	Fr: translation filed
1995-01-31	EAL	Se: european patent in force in sweden	Ref document number: 90106471.7
1995-04-24	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1995-04-24	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1995-06-14	26N	No opposition filed
2002-01-01	REG	Reference to a national code	Ref country code: GB Ref legal event code: IF02
2005-04-15	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 20050415 Year of fee payment: 16
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2006-12-19	EUG	Se: european patent has lapsed
2006-12-27	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 20060404
2007-01-02	NLV4	Nl: lapsed or anulled due to non-payment of the annual fee	Effective date: 20061101
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