EP1046774B1 - Charnière pour portes d'appareils électroménagers comme machines à laver et similaires - Google Patents

Charnière pour portes d'appareils électroménagers comme machines à laver et similaires Download PDF

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Publication number
EP1046774B1
EP1046774B1 EP00107988A EP00107988A EP1046774B1 EP 1046774 B1 EP1046774 B1 EP 1046774B1 EP 00107988 A EP00107988 A EP 00107988A EP 00107988 A EP00107988 A EP 00107988A EP 1046774 B1 EP1046774 B1 EP 1046774B1
Authority
EP
European Patent Office
Prior art keywords
bush
component
hinge
pivot
respect
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
EP00107988A
Other languages
German (de)
English (en)
Other versions
EP1046774A1 (fr
Inventor
Benito Zollia
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.)
Brovedani SpA
Original Assignee
Brovedani 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 Brovedani SpA filed Critical Brovedani SpA
Publication of EP1046774A1 publication Critical patent/EP1046774A1/fr
Application granted granted Critical
Publication of EP1046774B1 publication Critical patent/EP1046774B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D11/00—Additional features or accessories of hinges
    • E05D11/08—Friction devices between relatively-movable hinge parts
    • E05D11/082—Friction devices between relatively-movable hinge parts with substantially radial friction, e.g. cylindrical friction surfaces
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/30—Application of doors, windows, wings or fittings thereof for domestic appliances
    • E05Y2900/312—Application of doors, windows, wings or fittings thereof for domestic appliances for washing machines or laundry dryers

Definitions

  • the present invention relates to a hinge particularly for doors for electric household appliances such as washing machines or the like.
  • Conventional hinges particularly for doors of washing machines, comprise two components formed by blanking and shaping metal plate elements forming, by means of their curled tabs, respective seats crossed by a likewise metallic pivot rigidly coupled to a first one of the components, which is fixed to the supporting structure of the washing machine, and can rotate with respect to a second one of the components, which is fixed to the door.
  • the first component has two parallel, coaxial and spaced wings with respective curled tabs between which the curled tab of the second element is arranged.
  • the pivot thus passes through the curled tab of a first wing, the curled tab of the second component, and then through the curled tab of the second wing.
  • the second component is blocked axially between the wings of the first one.
  • the pivot is fixed to the first component by deforming the wings of the first component by calking.
  • the pivot is also deformed so as to assume a non-straight configuration after insertion.
  • This non-straight configuration produces friction in the rotation of the second component that supports the door with respect to the pivot.
  • pivot is fixed to the second component (movable part fixed to the door) and produces friction with respect to the first component (the part that is fixed to the washing machine body).
  • the simultaneous deformation of the pivot causes sticking and jamming in certain points of the rotation, also because the provided galvanic zinc coating treatment does not cover the inside of the curled portion, which can therefore corrode.
  • British Patent No. 1 555 877 discloses a hinge of the same kind of the one set forth in the preamble of claim 1.
  • the aim of the present invention is to provide a hinge which eliminates the above-noted drawbacks.
  • an object is to provide a friction coupling during the opening rotation in the door which remains constant over time and with use.
  • a further object is to provide a hinge which compensates for the coupling plays that occur as the hinge is used.
  • a further object of the present invention is to provide a hinge which is in any case competitive with respect to conventional ones.
  • a further object of the invention is to provide a hinge whose manufacture does not entail particular technical difficulties with respect to those entailed by current hinges.
  • a further object is to provide a hinge which can be manufactured with conventional equipment and systems.
  • the tabs 12 and 13 belong to the first component 10, and particularly to respective wings 19 and 20 between which the tab 14 of the second component 11 is arranged and is thus locked axially.
  • the pivot 18 is rigidly coupled to the first component 10 by plastic deformation thereof.
  • the curled tab 14 of the second component 11 is interrupted axially at the center of its length by a region 21 in which a plastic bush 22 is provided which is made of an elastically deformable material (for example polypropylene) and is rigidly coupled to the second component 11.
  • a plastic bush 22 is provided which is made of an elastically deformable material (for example polypropylene) and is rigidly coupled to the second component 11.
  • the bush 22 in fact comprises, at its ends, with two mutually opposite axial wings 23 which are accommodated in corresponding seats 24 of the curled tab 14 obtained by blanking the metal plate before the curling operations.
  • the bush 22 is fitted with an interference fit on the pivot and is shaped like an open ring, since it has a longitudinal slit 25 which also splits in two the wings 23.
  • the inside diameter of the bush 22 is smaller than the outside diameter of the pivot 18, so that the insertion of the pivot in the bush produces compressions in a substantially radial direction and therefore produces friction on the pivot 18.
  • the bush 22 Since the bush 22 is made of elastically deformable material, it tends to compensate for plays by tightening around the pivot 18 until the slit 25, which is normally open during use, closes completely.
  • two constructive embodiments of the bush designated by the reference numerals 122 and 222, respectively have a cross-section which is again circular with a slit 124, which however in this case lies diametrically opposite the axial tabs 123, and a cross-section with a multiplicity of lobes 126 and is closed.
  • the insertion of the bush 22 in a suitable region of the second component 11 in fact allows to provide an elastic system for providing friction and for compensating for the plays that act on the pivot 18.
  • the slit 25 also allows to automatically load and correctly position the bush 22 on the second component 11.
  • the hinge can have its pivot fixed to the second component and the bush made of elastically deformable material can be fitted in a seat of the first component.
  • the hinge can also be configured with a multipliplicity of articulations, i.e., with two or more articulation pivots.
  • the element that connects the two pivots constitutes the second component on one side and the first component on the other side.
  • the materials employed may be any according to requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Hinges (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Claims (6)

  1. Charnière, en particulier pour portes d'appareils électroménagers tels que des machines à laver ou analogues, comprenant deux composants (10, 11) formés par découpage et formage d'éléments en tôle métallique qui forment, au moyen de leurs pattes recourbées (12, 13, 14), des logements respectifs (15, 16, 17) croisés par un pivot (18) également métallique solidaire de l'un des composants (10, 11) et pouvant tourner par rapport à l'autre composant (10, 11), ladite patte recourbée (14) de l'autre composant (10, 11) qui peut tourner librement par rapport audit pivot (18) étant interrompue par une région (21) dans laquelle il y a au moins un manchon (22, 122, 222) réalisé en matière élastiquement déformable, lequel manchon (22, 122, 222) est solidaire dudit autre composant (10, 11) et lequel manchon (22, 122, 222) est monté à ajustement serré sur ledit pivot (18) et est apte à induire des compressions dans une direction sensiblement radiale afin de réaliser un frottement sur ledit pivot (18), ladite charnière étant caractérisée en ce que ledit au moins un manchon (22, 122, 222) se termine, à ses extrémités, par deux ailes axiales mutuellement opposées (23) qui sont reçues dans des logements correspondants (24) formés dans ladite patte recourbée (14) dudit autre composant (10, 11).
  2. Charnière selon la revendication 1, caractérisé en ce que ledit au moins un manchon (22, 122) a une section transversale circulaire.
  3. Charnière selon la revendication 2, caractérisé en ce que ledit au moins un manchon (22, 122) est ouvert et a une fente longitudinale (25, 124).
  4. Charnière selon la revendication 3, caractérisé en ce que ladite fente (25) est réalisée dans une position telle qu'elle divise les deux ailes d'extrémité (23).
  5. Charnière selon la revendication 3, caractérisé en ce que ladite fente (124) est disposée diamétralement opposée par rapport à la position desdites ailes (123).
  6. Charnière selon la revendication 1, caractérisé en ce que ledit manchon (222) a une section transversale multilobée (126).
EP00107988A 1999-04-22 2000-04-18 Charnière pour portes d'appareils électroménagers comme machines à laver et similaires Expired - Lifetime EP1046774B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1999PD000083A IT1306650B1 (it) 1999-04-22 1999-04-22 Cerniera perfezionata, particolarmente per portelli di chiusura dielettrodomestici quali lavatrici o simili.
ITPD990083 1999-04-22

Publications (2)

Publication Number Publication Date
EP1046774A1 EP1046774A1 (fr) 2000-10-25
EP1046774B1 true EP1046774B1 (fr) 2004-01-14

Family

ID=11392571

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00107988A Expired - Lifetime EP1046774B1 (fr) 1999-04-22 2000-04-18 Charnière pour portes d'appareils électroménagers comme machines à laver et similaires

Country Status (5)

Country Link
EP (1) EP1046774B1 (fr)
AT (1) ATE257897T1 (fr)
DE (1) DE60007683T2 (fr)
ES (1) ES2214183T3 (fr)
IT (1) IT1306650B1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1311136B1 (it) * 1999-11-08 2002-03-04 Cmi Srl Dispositivo di cerniera con apertura - chiusura bistadio per ilportello di apparecchi elettrodomestici, in particolare lavatrici.
US7617570B2 (en) 2006-03-22 2009-11-17 Whirlpool Corporation Double-pivot, constrained kinematic hinge for a front-loading laundry machine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE813665C (de) * 1948-10-02 1951-09-17 Baroper Federnfabrik Schulte & Fensterfitsche oder fitschenaehnliches Gelenk
DE2642176A1 (de) * 1976-09-20 1978-03-23 Scharwaechter Gmbh Co Kg Mit einer hemmeinrichtung versehenes scharnier

Also Published As

Publication number Publication date
DE60007683D1 (de) 2004-02-19
ES2214183T3 (es) 2004-09-16
ITPD990083A0 (it) 1999-04-22
IT1306650B1 (it) 2001-10-02
DE60007683T2 (de) 2005-01-13
ATE257897T1 (de) 2004-01-15
EP1046774A1 (fr) 2000-10-25
ITPD990083A1 (it) 2000-10-22

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