EP0318120A1 - Cuve pour machines à laver - Google Patents

Cuve pour machines à laver Download PDF

Info

Publication number
EP0318120A1
EP0318120A1 EP88202668A EP88202668A EP0318120A1 EP 0318120 A1 EP0318120 A1 EP 0318120A1 EP 88202668 A EP88202668 A EP 88202668A EP 88202668 A EP88202668 A EP 88202668A EP 0318120 A1 EP0318120 A1 EP 0318120A1
Authority
EP
European Patent Office
Prior art keywords
base body
end wall
wall
section
tub according
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
EP88202668A
Other languages
German (de)
English (en)
Other versions
EP0318120B1 (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 Europe BV
Original Assignee
BAUKNECHT HAUSGERATE GmbH
Bauknecht Hausgeraete GmbH
Whirlpool Europe BV
Philips Gloeilampenfabrieken NV
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 HAUSGERATE GmbH, Bauknecht Hausgeraete GmbH, Whirlpool Europe BV, Philips Gloeilampenfabrieken NV filed Critical BAUKNECHT HAUSGERATE 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

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

Definitions

  • the invention relates to a tub for washing machines or the like.
  • a substantially hollow cylindrical base body made of sheet metal with a first annular molding area
  • an end wall made of sheet metal with a second annular molding area
  • disk-shaped end regions lying in planes running perpendicular to the central axis adjoin both shaping regions.
  • the end sections can be connected via tie rods which run over the length of the tub.
  • a prestressing force required for a sealing connection can be applied between the base body and the end wall via the tie rods.
  • the end region of the end wall is held between that of the base body and an annular balancing weight which can likewise be connected to the base body via the tie rods.
  • 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. Because forces exerted by the tensioning levers are transmitted via the sealing ring essentially in the axial direction into the lateral surface of the base body, this must likewise have a relatively large wall thickness so that no inadmissible deformations or instabilities occur. This increases the manufacturing costs, since high-quality stainless steel sheets are used for the production of tubs from molded sheet metal parts. Furthermore, it is not possible to use the known releasable connection between the end wall and the base body in tubs with a relatively small wall thickness.
  • a tub is also known (EP-A1 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 made 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 generic tub so that it can be manufactured with little parts and assembly.
  • first and the second end section are each formed as a hollow cylinder and can be connected to one another via fastening screws and / or clamping springs distributed over the circumference.
  • first and the second end section are each hollow cylindrical
  • the end regions of the base body or the end wall adjoining the first or second mold section are stiffened in a simple manner. This also increases the rigidity of the adjacent mold areas. Furthermore, due to the increased inherent rigidity of the two end regions, these can be connected to one another without it being necessary for a sealing connection between the front wall and the base body of the simultaneous contact, for example. An annular balancing weight on the front wall is required. Due to the inherent rigidity of both end regions, forces applied in a point-like manner by fastening means can be distributed essentially over the circumference, so that the end wall and base body can only be connected to one another via fastening screws and / or clamping springs distributed over the circumference. This simplifies the assembly of tubs when the effort required for parts required for this is reduced, so that at least partial automation of the assembly and the production of preassembled units is possible.
  • fastening by fastening screws can be supplemented by clamping springs which generate forces in the radial direction.
  • clamping springs which generate forces in the radial direction.
  • a further component can be connected to the base body via the fastening screws.
  • a bearing cross together with the end wall can be connected to the base body in a simple manner via its arms.
  • the receiving space tapers in a wedge shape.
  • Such training is simple about the shape of the first and second mold area possible.
  • the sealing ring is pressed in the direction of the wedge-shaped taper by prestressing forces generated in the radial and / or axial direction as a result of the fastening of the end wall to the base body. This ensures that the tub is sealed even under heavy loads.
  • the first and / or second molding area for stiffening has a supporting wall adjoining at least one boundary wall for the receiving space. This results in a particularly good stiffness and dimensional stability of one or both shaped areas and thus the receiving space formed between them for the sealing ring. It is also possible to distribute sections of reduced wall thickness that arise during the shaping of the shaped areas substantially uniformly.
  • the end wall can be axially pretensioned relative to the base body by contacting the component that can be connected to the base body via fastening screws, such as a bearing cross or the like.
  • fastening screws and / or clamping springs are distributed over the circumference an essentially even distribution of the individual forces exerted by them over the circumference. So that the sealing ring can be pressed substantially evenly against the boundary walls, so that a good sealing effect is ensured over the entire circumference.
  • the end wall can be pretensioned with respect to the base body by a compression or tension spring.
  • Preloads can be applied in a manner that is easy to manufacture and assemble, using compression or tension springs that can be distributed over the circumference and that are supported on the one hand on the first end region of the base body and on the other hand on the second end region of the end wall.
  • Such springs can be used, for example, between adjacent screw connections.
  • a prestress can be applied in a predeterminable manner that is adapted to the load. In this way it can be ensured, for example, that no leaks can be caused even with a laundry drum rotating at high speed, due to unbalance forces coming from it and resulting micro-movements in the area of the sealing ring or the intermediate space.
  • At least one clamping spring 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.
  • the fact that the clamping spring is designed so that it also acts as a compression spring, end wall and connect the base body in a particularly simple and at least partially automatable manner and pretension against one another.
  • the first molding area runs essentially radially inwards with a substantially V-shaped cross section and / or the second molding area has an essentially axial first section with a substantially V-shaped cross section and a second section that adjoins it radially outwards in steps on, which lies essentially to a plane perpendicular to the axial direction.
  • the first end section has a radially outwardly bent extension at its free end.
  • the approach avoids a sharp-edged opening, which can lead to injuries and damage to the sealing ring when installing and removing the bulkhead.
  • the end section of the base body is stiffened.
  • the approach also provides support for the first support approach of a compression spring in a simple manner.
  • clamping springs of this type are simple to manufacture and can at least partially be assembled automatically. They serve on the one hand to fasten the end wall to the base body and on the other hand they can be used to apply a pretensioning force required for a releasable sealing connection.
  • a base body 1, not fully shown in FIGS. 1 and 2, of a tub 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 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.
  • 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 and extends 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 inwards, 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 an adjacent to the boundary wall 25 substantially at an angle of about 90 ° boundary wall 25 'and goes radially outwards into the second end section 7.
  • annular receiving space 29 for receiving a sealing ring 31 is formed.
  • the receiving space 29 has a radially outward tapered wedge-shaped cross section. This wedge-shaped cross section leads to the fact that the first and second end sections 6, 7 are connected to one another via screw connections 9 to a prestress which acts essentially in the radial direction on the sealing ring 31.
  • the end wall 5 in the region of the receiving space 29 can also be pretensioned in the axial direction in the area of the receiving space 29 by means of screw connections 9 by means of end connections 33 formed on the arms of the bearing cross 15 and arranged adjacent to the receiving space 29.
  • This prestressing which is applied in a simple manner via the fastening of the end wall 5 to the bearing cross on the base body 1, results in a contact pressure on the sealing ring 31 in the direction of the tapering in the axial direction towards the inside of the base body 1 Receiving space 29.
  • Good seating of the sealing ring 31 on the boundary walls 19, 25, 25 'of the first or second molding area 17, 23 results in a good sealing effect.
  • 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.
  • no undesired deformations occur and it is also possible to have a few Distributed screw connections over the circumference 9 generate prestressing forces substantially uniformly over the circumference, so that the sealing ring 31 is pressed substantially uniformly against the boundary walls 19, 25, 25 'of the first and second molding regions 17, 23. With a small number of parts, this results in an easy-to-install connection between the end wall 5 and the base body 1, which corresponds to the requirements regarding the tightness of this connection.
  • 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 to generate an axial pretensioning force in the region of the receiving space 29, in a manner comparable to the end lug 33, against the end wall 5 in the region of the boundary wall 25 '.
  • the base body 1 or the end wall 5 are designed to be sufficiently rigid or dimensionally stable for a sealing connection.
  • screw connections 9 and end lugs 33 or first and second support lugs 41, 45 of clamping springs 35 By means of screw connections 9 and end lugs 33 or first and second support lugs 41, 45 of clamping springs 35, axial or radial prestressing forces applied in a punctiform manner can therefore be distributed substantially uniformly over the circumference of the end wall 5 in the area of the intermediate space 29.
  • the sealing ring 31 can thus be pressed uniformly against the first boundary wall 19 for an effective seal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Gasket Seals (AREA)
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
DE3740204 1987-11-27
DE19873740204 DE3740204A1 (de) 1987-11-27 1987-11-27 Laugenbehaelter fuer waschmaschinen

Publications (2)

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

Cited By (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

Citations (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
EP0132805A2 (fr) * 1983-07-29 1985-02-13 INDUSTRIE ZANUSSI S.p.A. Cuve en acier inoxydable pour machine à laver le linge

Patent Citations (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
EP0132805A2 (fr) * 1983-07-29 1985-02-13 INDUSTRIE ZANUSSI S.p.A. Cuve en acier inoxydable pour machine à laver le linge

Cited By (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

Also Published As

Publication number Publication date
DE3882021D1 (de) 1993-07-29
EP0318120B1 (fr) 1993-06-23
DE3740204A1 (de) 1989-06-08

Similar Documents

Publication Publication Date Title
DE3216938C2 (de) Rohrverbindung
DE4234116C2 (de) Schwingungsdämpfungseinrichtung
DE3650511T2 (de) Verfahren zur Herstellung eines Waschmaschinenbehälters und mittels eines solchen Verfahrens hergestellter Behälter
DE69928305T2 (de) Schutzbalg mit einsetzbarer Büchse
EP0232831A2 (fr) Accessoire de câble fileté
DE2443918C2 (de) In axialer Richtung geteilter Wälzlagerlaufring
DE69901608T2 (de) Pelton turbinenlaufrad und peltonturbine mit einem solchen laufrad
DE19651643A1 (de) Siebvorrichtung mit spaltförmigen Öffnungen
EP0318120A1 (fr) Cuve pour machines à laver
DE4015256A1 (de) Kombiniertes radial-axial-gleitlager
EP1442243A1 (fr) Attache destinee a un corps et ensemble de fixation associe a une attache de ce type
EP0319081B1 (fr) Masse d'équilibrage pour machines à laver
EP0318109B1 (fr) Cuve pour machines à laver
DE3708949A1 (de) Haltering zur lagesicherung eines bauteils
DE69408169T2 (de) Laugenbehälterverbesserung in wäschewaschmaschine
DE69807645T2 (de) Waschmaschine mit Verankerungsvorrichtung für den Laugenbehälter
DE4014067C2 (fr)
DE102019203815A1 (de) Hilfsrahmen für ein Kraftfahrzeug
DE69314859T2 (de) Frontlader-Trommelwaschmaschine
EP0857907A1 (fr) Ensemble collier de serrage pour le montage anti-vibration d'un tuyau à une paroi
DE3417028C2 (de) Vorrichtung zur Verbindung zweier Kfz.-Auspuffrohre
DE3934843A1 (de) Spinn- oder zwirnspindel
DE69726173T2 (de) Kompakte bremssteuervorrichtung
DE3701540C1 (en) Arrangement of two housing parts, in particular a hood or sump, on an internal combustion engine
DE69505644T2 (de) Vorrichtung zur Herstellung einer abnehmbaren Verbindung zwischen einem Verschluss und einer Wiege eines Geschützes

Legal Events

Date Code Title Description
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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT SE

17P Request for examination filed

Effective date: 19891117

17Q First examination report despatched

Effective date: 19910513

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: BAUKNECHT HAUSGERAETE GMBH

Owner name: WHIRLPOOL INTERNATIONAL B.V.

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: BAUKNECHT HAUSGERAETE GMBH

Owner name: WHIRLPOOL EUROPE B.V.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT SE

REF Corresponds to:

Ref document number: 3882021

Country of ref document: DE

Date of ref document: 19930729

ITF It: translation for a ep patent filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19930722

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
EAL Se: european patent in force in sweden

Ref document number: 88202668.5

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20071129

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20071128

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20071128

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20071221

Year of fee payment: 20

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20081123

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20071130

Year of fee payment: 20

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20081123