EP0318120B1 - Cuve pour machines à laver - Google Patents

Cuve pour machines à laver Download PDF

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Publication number
EP0318120B1
EP0318120B1 EP88202668A EP88202668A EP0318120B1 EP 0318120 B1 EP0318120 B1 EP 0318120B1 EP 88202668 A EP88202668 A EP 88202668A EP 88202668 A EP88202668 A EP 88202668A EP 0318120 B1 EP0318120 B1 EP 0318120B1
Authority
EP
European Patent Office
Prior art keywords
base body
wall
section
washing solution
shaped
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 - Lifetime
Application number
EP88202668A
Other languages
German (de)
English (en)
Other versions
EP0318120A1 (fr
Inventor
Horst Sperling
Walter Dunst
Lutz Scharf
Gerd Mäntele
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.)
Bauknecht Hausgeraete GmbH
Whirlpool International BV
Original Assignee
Bauknecht Hausgeraete GmbH
Whirlpool Europe BV
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 Bauknecht Hausgeraete GmbH, Whirlpool Europe BV filed Critical Bauknecht Hausgeraete GmbH
Publication of EP0318120A1 publication Critical patent/EP0318120A1/fr
Application granted granted Critical
Publication of EP0318120B1 publication Critical patent/EP0318120B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D06F37/261—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

Definitions

  • Such a tub is e.g. made known by EP-A-0 132 805.
  • the receiving area which is approximately triangular in cross section
  • a seal which is approximately triangular in cross section and which is compressed by tightening the fastening screws.
  • the end sections, which adjoin the molding areas, are flange-shaped in the known design and arranged at right angles to the axis. Such a flange construction disadvantageously enables the end regions to be bent open when high internal pressure occurs.
  • a tub (CH-PS 446 253) is known, which has a front wall that can be pretensioned against the base body by means of tensioning levers.
  • the clamping levers distributed over the circumference and fastened to the base body can, in their closed position, press on a U-shaped end region of the end wall.
  • the space for receiving the sealing ring is formed between the U-shaped end region and a radially inwardly bent extension of the base body.
  • the end wall must be made of relatively thick-walled sheet metal.
  • This increases the manufacturing costs, since high-quality stainless steel sheets are used for the manufacture of tubs from molded sheet metal parts.
  • a tub is also known (EP-A-0 124 939), in which the base body and / or end walls are molded plastic parts.
  • An annular groove for receiving a seal is formed in one of the plastic molded parts.
  • Adjacent to the groove is an annular extension on which resilient clips can be supported.
  • These can also be supported on a groove-shaped area formed in the end wall in order to pretension them against the base body.
  • the areas on which brackets are supported must be designed to be relatively stiff for an essentially uniform power transmission; this also applies to the groove for receiving the sealing ring and the section of the end wall opposite it.
  • a wall thickness of approximately 6 mm is provided for the plastic parts.
  • the known tub is therefore not suitable for production from molded sheet metal parts.
  • the invention has for its object to provide a stable and reliable sealing connection between the base body and the end wall in a tub of the type mentioned with as little material and assembly effort.
  • both the basic housing and the end wall together with the bearing cross are connected to one another in one operation.
  • the second end section is arranged at right angles to the end wall, ie it forms a high edge.
  • This cup-shaped end wall engages in the hollow cylindrical end section of the base body to form the receiving area for the seal.
  • the end wall is prestressed in relation to the base body by contacting the inserted bearing cross in some areas.
  • the end section of the end wall which is designed as a high edge, gives the end wall so much rigidity that a selectively applied contact force becomes effective over the entire circumference through the bearing cross.
  • the end wall can be axially pretensioned with respect to the base body by at least one compression or tension spring.
  • at least one clamping spring is provided which, for an additional effect as a compression spring, has a first and a second support shoulder for support on the base body or on the end wall.
  • Clamping springs of this type are simple to manufacture and can at least partially be assembled automatically. They serve on the one hand for additional fastening of the end wall to the base body, on the other hand can be used with such clamping springs a pretensioning force required for a releasable sealing connection is applied.
  • the first end section of the base body has a radially outwardly bent extension at its free end.
  • the first molding area has a radially inward, essentially V-shaped cross section, with an obliquely extending boundary wall to form the receiving space and with an adjoining obliquely extending support wall.
  • the second molding area has an axially inward, substantially V-shaped cross section, with an obliquely extending support wall and with an axially extending boundary wall, which serves with a subsequent further support wall to form the receiving space, the further support wall extends radially outward and lies essentially in a plane perpendicular to the axis.
  • Such a design of the shaped areas has the effect that the receiving space for the seal is tapered in a wedge shape both radially outwards and axially inwards.
  • the sealing ring lying in the receiving space is pressed in the direction of the wedge-shaped taper. This ensures that the tub is sealed even under heavy loads.
  • the design of the form areas results in a particularly good one Rigidity and dimensional stability of the receiving space for the sealing ring. Sections of reduced wall thickness resulting from the shaping can be distributed essentially uniformly.
  • a base body 1 of a suds container for receiving a laundry drum, not shown, of a washing machine or the like, also not shown, can be produced essentially in a cylindrical shape as a molded sheet metal part.
  • An end wall 5 can be detachably connected to the base body 1.
  • a hollow cylindrical second end section 7 of the end wall 5 can be placed against a hollow cylindrical first end section 6 of the base body.
  • the end region of the base body 1 and the end wall 5 are stiffened by these end sections 6, 7. Furthermore, the end wall 5 can be easily guided into the first end section 6 of the base body via the second end section 7 for assembly.
  • screw connections designated 9 overall, are arranged in the radial direction distributed over the circumference.
  • First and second end sections 6, 7 can thus be connected to one another.
  • Such a screw connection is shown in Fig. 1.
  • a fastening screw 11 is guided through aligned through openings (not shown) in the crossmember 3, the first and the second end section 6, 7.
  • the fastening screw is then screwed into a screw hole 13, which is provided in an arm of a bearing cross 15, not shown, for a laundry drum.
  • the end wall 5 can thus be connected to the base body 1 via screw connections 9 in such a way that the bearing cross 15 is also fastened to the base body 1 when a connection is made.
  • a first annular shaped region 17 is formed in the base body 1, extending radially inward over the circumference.
  • the shaped area 17 has essentially a V-shaped cross-section with a boundary wall 19 extending inclined to the first end section or towards the end wall 5 and a support wall 21 adjoining it via a rounded area.
  • the end wall is adjacent to the first annular shaped area 17 5 shows a second, ring-shaped molding area adjoining the second end area 7 radially inward, designated overall by 23.
  • This has an essentially axially extending section with an essentially V-shaped cross section, in which a boundary wall 25 extends essentially in the axial direction. This is followed by a support wall 27 over a rounded area.
  • the second molding area 23 furthermore has a section which adjoins the V-shaped section radially outward in a step-like manner and which lies essentially in a plane perpendicular to the axial direction of the base body 1.
  • This section has a boundary wall 25 ′ which adjoins the boundary wall 25 essentially at an angle of approximately 90 ° and merges radially outward into the second end section 7.
  • An annular receiving space 29 for receiving a sealing ring 31 is formed between the boundary walls 19, 25, 25 'of the first and second molding areas 17, 23.
  • the receiving space 29 has a radially outward tapered wedge-shaped cross section.
  • the end wall 5 can be biased in the area of the receiving space 29 with respect to the base body 1 in the axial direction by means of end projections 33 formed on the arms of the bearing cross 15 and arranged adjacent to the receiving space 29. This prestressing results in a contact pressure on the sealing ring 31 in the direction of the receiving space 29, which also tapers in the axial direction towards the inside of the base body 1. Via a good contact of the sealing ring 31 with the boundary walls 19, 25, 25 'of the first or second molding area 17, 23 thus results in a good sealing effect.
  • the receiving space 29 is also with a relatively small wall thickness the end wall 5 and the base body 1 are sufficiently rigid and dimensionally stable.
  • a further stiffening results from the first and second end regions 6, 7, which are respectively connected to the first and second molding regions 17, 23.
  • clamping springs 35 can be arranged between screw connections 9 over the circumference, as is shown in FIG. 2 for a clamping spring 35.
  • the clamping spring 35 which can be produced in one piece, for example from sheet steel, has two clamping brackets 37, 39 connected to one another. After the clamping spring 35 has been inserted, the clamping bracket 37 bears against the outside of the first end section 6 , while the clamping bracket 39 rests on the inside of the second end section 7.
  • a tongue-shaped first support projection 41 is formed from the clamping bracket 37 with a contact surface for one at the end of the first end portion 6 radially outwardly curved extension 43 Approach 43 and the first support extension 41, the clamping spring 35 can be supported on the first end section 6 or the base body 1.
  • the end wall 5 can be pressed in the direction of the first shaped section 17 by means of a second support projection 45 projecting radially inwards from the clamping bracket 39.
  • the clamping spring 35 which acts simultaneously as a compression spring through the first and second support lugs 41, 45, presses against the end wall 5 in the region of the boundary wall 25 'in a manner comparable to the end lug 33 in order to generate an axial pretensioning force in the area of the receiving space 29.
  • the base body 1 and the end wall 5 are designed to be sufficiently rigid or dimensionally stable for a sealing connection.
  • Axial pretensioning forces applied in a punctiform manner by end lugs 33 or first and second support lugs 41, 45 of clamping springs 35 can therefore be distributed substantially uniformly over the circumference of the end wall 5 in the region of the intermediate space 29.
  • the sealing ring 31 can thus be pressed uniformly against the first boundary wall 19 for an effective seal.
  • the solution according to the invention suitable for tubs in which the base body 1 and end walls 5 can be produced with a relatively small wall thickness. Due to the rigidity and dimensional stability of the boundary walls 19, 25, 25 'delimiting the receiving space 29 and the respectively adjoining first and second end regions 6, 7 and the resulting, essentially uniformly distributed, prestressing forces distributed over the circumference, a good sealing effect is achieved given. This also applies in the event that micro-movements occur in the area of the receiving space 29 or the sealing ring 31, which can be caused, for example, by unbalanced forces with rapidly rotating laundry drums at, for example, 1400 rpm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Gasket Seals (AREA)

Claims (6)

  1. Cuve pour un lave-linge ou analogue, comprenant
    - un corps de base (1) en tôle, ayant la forme d'un cylindre creux, qui présente une première zone annulaire profilée (17) et un premier segment terminal (6),
    - une paroi d'extrémité (5) en tôle, présentant une seconde zone annulaire profilée (23) et un second segment terminal (7), et
    - un logement (29) formé entre les zones profilées (17, 23) pour une bague d'étanchéité (31),
    - les segments terminaux (6, 7) étant reliés de façon détachable entre eux et à une croix de support (15) par des vis de fixation (9, 11),
    caractérisée en ce que
    - les deux segments terminaux (6, 7) sont réalisés sous la forme d'un cylindre creux et sont dirigés axialement vers l'extérieur dans le même sens,
    - la paroi d'extrémité (5) est emboîtée dans le corps de base (1), avec recouvrement mutuel des segments terminaux (6, 7), et est précontrainte vis-à-vis du corps de base (1) par application, par endroits, de la croix de support (15), et
    - les vis de fixation (9, 11) sont vissées radialement dans la croix de support (15).
  2. Cuve selon la revendication 1, caractérisée en ce que la paroi d'extrémité (5) peut être précontrainte axialement vis-à-vis du corps de base (1) par au moins un ressort de compression ou de traction.
  3. Cuve selon la revendication 1 ou 2, caractérisée en ce qu'au moins un ressort de serrage (35) est prévu, ressort qui présente, pour exercer une action supplémentaire comme ressort de compression, un premier et un second appendice d'appui (41, 45) destinés à être appuyés respectivement sur le premier segment terminal (6) du corps de base (1) et sur la paroi d'extrémité (5).
  4. Cuve selon une des revendications 1 à 3, caractérisée en ce que le premier segment terminal (6) comporte à son extrémité libre un prolongement (43) recourbé radialement vers l'extérieur.
  5. Cuve selon une des revendications 1 à 4, caractérisée en ce que la première zone profilée (17) possède une section droite essentiellement en forme de V, dirigée radialement vers l'intérieur et comportant une paroi de délimitation (19) orientée obliquement pour former le logement (29) et une paroi d'appui (21) qui s'y raccorde et est également orientée obliquement.
  6. Cuve selon une des revendications 1 à 4, caractérisée en ce que la seconde zone profilée (23) possède une section droite essentiellement forme de V, dirigée axialement vers l'intérieur et comportant une paroi d'appui (27) orientée obliquement et une paroi de délimitation (25) orientée axialement et qui, ensemble avec une paroi d'appui supplémentaire (25') qui s'y raccorde, sert à la formation du logement (29), la paroi d'appui supplémentaire (25') étant orientée radialement vers l'extérieur et située essentiellement dans un plan perpendiculaire à l'axe.
EP88202668A 1987-11-27 1988-11-24 Cuve pour machines à laver Expired - Lifetime EP0318120B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873740204 DE3740204A1 (de) 1987-11-27 1987-11-27 Laugenbehaelter fuer waschmaschinen
DE3740204 1987-11-27

Publications (2)

Publication Number Publication Date
EP0318120A1 EP0318120A1 (fr) 1989-05-31
EP0318120B1 true EP0318120B1 (fr) 1993-06-23

Family

ID=6341388

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88202668A Expired - Lifetime EP0318120B1 (fr) 1987-11-27 1988-11-24 Cuve pour machines à laver

Country Status (2)

Country Link
EP (1) EP0318120B1 (fr)
DE (2) DE3740204A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2366808A (en) * 2000-09-16 2002-03-20 Notetry Ltd Laundry appliance
DE102015204378A1 (de) 2015-03-11 2016-09-15 BSH Hausgeräte GmbH Hausgerät zum Behandeln von Wäsche

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1215057A (fr) * 1958-10-31 1960-04-13 Esswein & Cie Cuve pour machine à laver
DE2633604A1 (de) * 1976-07-27 1978-02-02 Licentia Gmbh Trommelbehaelter fuer eine stirnbeschickbare waschmaschine
DE2719336A1 (de) * 1977-04-30 1978-11-09 Miele & Cie Wasch- und schleudermaschine
IT1174950B (it) * 1983-07-29 1987-07-01 Zanussi A Spa Industrie Vasca in acciaio inossidabile per macchine lavabiancheria

Also Published As

Publication number Publication date
DE3740204A1 (de) 1989-06-08
DE3882021D1 (de) 1993-07-29
EP0318120A1 (fr) 1989-05-31

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