EP0858767B1 - Dispositif pour articuler une porte, en particulier une porte de lave-vaiselle, à un structure fixe - Google Patents

Dispositif pour articuler une porte, en particulier une porte de lave-vaiselle, à un structure fixe Download PDF

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Publication number
EP0858767B1
EP0858767B1 EP19970830067 EP97830067A EP0858767B1 EP 0858767 B1 EP0858767 B1 EP 0858767B1 EP 19970830067 EP19970830067 EP 19970830067 EP 97830067 A EP97830067 A EP 97830067A EP 0858767 B1 EP0858767 B1 EP 0858767B1
Authority
EP
European Patent Office
Prior art keywords
rod
door
appliance
angle
pivot
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
EP19970830067
Other languages
German (de)
English (en)
Other versions
EP0858767A1 (fr
Inventor
Augusto Zanetti
Angelo Vanini
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.)
Nuova Star SpA
Original Assignee
Nuova Star 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 Nuova Star SpA filed Critical Nuova Star SpA
Priority to DE1997608589 priority Critical patent/DE69708589T2/de
Priority to ES97830067T priority patent/ES2169344T3/es
Priority to EP19970830067 priority patent/EP0858767B1/fr
Publication of EP0858767A1 publication Critical patent/EP0858767A1/fr
Application granted granted Critical
Publication of EP0858767B1 publication Critical patent/EP0858767B1/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
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
    • E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
    • E05F1/12—Mechanisms in the shape of hinges or pivots, operated by springs
    • E05F1/1246—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring perpendicular to the pivot axis
    • E05F1/1253—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring perpendicular to the pivot axis with a compression spring
    • E05F1/1261—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring perpendicular to the pivot axis with a compression spring for counterbalancing
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4251—Details of the casing
    • A47L15/4257—Details of the loading door
    • A47L15/4261—Connections of the door to the casing, e.g. door hinges
    • 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
    • E05Y2900/304—Application of doors, windows, wings or fittings thereof for domestic appliances for dishwashers

Definitions

  • the present invention relates to an appliance, in particular a dishwasher, comprising a fixed structure, a door and a device for hinging the door to the fixed structure.
  • Doors of the aforesaid type are subjected to the action of an elastic element set in such a way as to constantly return the door towards the position where it shuts off the compartment.
  • the elastic elements and, more in general, the hinging devices comprising them require particular structures to determine returning actions varying with laws correlated to the laws governing the variation of the actions induced by the weight force.
  • an appliance comprising a casing with an access door articulated on an horizontal axis and a device for counterbalancing the weight of the door in at least one partly opened position.
  • Said device comprises a spring fixed at its first end to the casing, and a leverage operationally active between the spring and the door.
  • the leverage comprises a kinematic chain and a connection rod.
  • the kinematic chain has three rods reciprocally articulated and arranged in succession.
  • the first and the third doors are mounted on the casing in such a way as to swivel around fixes axes.
  • the first rod is embedded into the door while the third is connected to the elastic element by the connecting rod.
  • Document EP 0692590 shows a device that is felt to be the closest prior art to the present invention. Said device has substantially the same structure of that of doc. EP 0551234 but exerts a return action that increases when the opening angle of the door increases. The device of this document has also a system for adjusting the intensity of the return action by modifying the pre-load of the spring.
  • the doors' own weight is far greater than that of similar doors fitted to other appliances such as kitchen ovens.
  • the panel also supports the dishwasher's command, control and adjustment circuitry and, most importantly, it supports the panels which integrate the dishwasher aesthetically with the furniture it is embedded in.
  • the weight which is much greater than that of appliances with similar opening actions, implies structuring and dimensioning the hinging devices in a way that is wholly specific to the dishwasher sector.
  • the purpose of the present invention therefore is to eliminate the aforementioned drawbacks by means of an appliance with a hinging device of the kind indicated in the preamble to claim 1, and such as to be usable indifferently on the doors of all types of dishwashers and regardless of the weight of the equipment contained within the door and/or of the weight of the panels supported externally.
  • 1 is the label indicating in its entirety an appliance, in particular a dishwasher, comprising a fixed structure 2, a door 3 and a device for hinging the door to the fixed structure 2.
  • Fixed structure 2 is represented in the Figures by a metal plate which is made integral with the casing of the dishwasher.
  • Door 3 is mounted on a vertical wall, not represented, of the casing, it can swivel around a fixed horizontal axis 5, borne by the structure 2 in correspondence with the lower horizontal side of the door 3, and it is interconnected with an elastic element 6 structured in such a way as to contrast the opening motion of the door 3 from the vertical position in Figure 1 to the horizontal position in Figure 2.
  • the elastic element 6 preferably comprises a helical compression spring, mounted on the fixed structure 2 in such a way as to yield along an essentially vertical line 14.
  • a leverage 7 is operationally placed, whose purpose is to correlate proportionately, and as a function of the opening angle (alpha) of the door 3, the intensity of the return action of the spring with the moment of rotation of the door 3 generated by the latter's own weight.
  • the leverage 7 comprises more in particular a kinematic chain 7a with reciprocally articulated rods 10, 9, 8, arranged in succession.
  • Rods 10, 8 at the ends of the kinematic chain 7a are interconnected with the fixed structure 2 by means of hinges which allow the angular oscillation of rods 10, 8 around fixed axes 5, 11.
  • the first rod 10 is integral with the door 3 in whose structure it is directly integrated.
  • the last rod 8 instead is connected to a rod 21 guiding and compressing the spring 6, by means of a connecting rod 20 interposed and fitted with ends articulated on pivots 13a and 13b.
  • Figures 1 and 2 show in particular that the kinematic chain 7a preferably presents a proportioning in the length of the respective rods 10, 9, 8 and a distance between the fixed axes 5, 11 suited to define an articulated quadrilateral.
  • the end rods 10, 8 function as rocking levers connected to each other by an intermediate connecting rod 9 and oscillating on the fixed structure 2. Furthermore, observing in particular Figure 1, it can be seen that the first rod 10 of the kinematic chain 7a presents articulated joints 10a, 10b for connection with intermediate connecting the rod 9 and with the fixed structure 2, which joints are located at a reciprocal distance smaller than the distance between the corresponding articulated joints 8a, 8b connecting the last rod 8 to the intermediate connecting rod 9 and to the fixed structure 2.
  • pivot 13a itself is located at a distance from the fixed axis 11 of the last rod 8 which does not exceed the distance between the articulated joints 10a and 10b of the first rod 10.
  • the pivot 13a furthermore is preferably displaced laterally with respect to the straight line 15 ideally connecting the end joints 8a and 8b of the last rod 8. This lateral displacement is performed preferably by the same part of the door 3 in such a way as to cause, during the use of the device 1, the door 3 to close without striking the structure 2 of the dishwasher casing.
  • the articulated quadrilateral presents, when the door 3 is in the closed condition, an angle B measuring substantially 80° between the first rod 10 and a straight line 50 passing through the fixed axes 5 and 11; an angle G measuring substantially 80° between the last rod 8 and the straight line 50; an angle D measuring substantially 80° between the last rod 8 and the intermediate rod 9; an angle T measuring substantially 120° between the intermediate connecting rod 9 and the first rod 10; an angle F measuring substantially 70° between the line 50 passing through the fixed axes 5 and 11 and the straight line 51 passing through the articulation axis 11 of the last rod 8 and the pivot 13a articulating the elastic element 6.
  • the articulated quadrilateral assumes for said angles, when the door 3 is in the open configuration, values measuring substantially 170° for angle B, 10° for angle G, 160° for angle D, 20° for angle T and 0° for angle F.
  • An alternative embodiment of device 1, illustrated in Figures 4 and 5, also entails the provision of means 16, 17 for adjusting the displacement of the pivot 13 with respect to the straight line 15 passing through the joints 8a, 8b.
  • These means comprise a slot 16 which is developed along a circumference arc which is obtained on the last rod 8 and which houses the pivot 13a that connects, with the last rod 8, the connecting rod 20 of the elastic element 6.
  • An adjusting screw 17 is operationally placed between the slot 16 and the pivot 13a to vary the position of the pivot 13a with respect to the slot 16 and thus with respect to the aforesaid straight line 15.
  • Hinging device 1 designed according to the invention in use, reveals a global elastic reaction which is quite insensitive to external load variations even when induced by strong variations in the weight of the door 3.
  • the device is suited to be applied practically to all known models of embedded dishwashers, whatever the type of lining panel adopted.
  • the device 1 can also be manufactured in a single body thus allowing for quick and easy mounting on the casing of the appliance it is destined for.

Landscapes

  • Washing And Drying Of Tableware (AREA)

Claims (10)

  1. Un appareil électroménager, en particulier un lave-vaisselle, comprenant une structure fixe (2), une porte (3) et un dispositif pour articuler la porte à la structure fixe (2), la porte (3) étant montée de manière à pivoter sur un axe fixe horizontal (5) et étant soumise à l'action d'un élément élastique (6) qui la rappelle dans la position fermée, ledit dispositif comprenant un mécanisme de levier (7) qui est opérationnellement placé entre la porte (3) et l'élément élastique (6) et qui est pourvu d'une chaíne cinématique (7a), d'une bielle (20) et d'une tige de guidage (21), la chaíne cinématique (7a) ayant des tiges (10, 9, 8) réciproquement articulées et disposées l'une à la suite de l'autre, la première tige (10) de la chaíne cinématique (7a) étant reliée à la porte (3) et la dernière tige (8) de la chaíne cinématique (7a) étant reliée à la tige de guidage (21) par l'intermédiaire de la bielle (20), ladite tige de guidage étant destinée à guider et à comprimer l'élément élastique (6), lesdites première et dernière tiges (10, 8) étant montées sur la structure fixe (2) de manière à pivoter sur des axes fixes (5, 11), ladite première tige (10) de la chaíne cinématique (7a) étant pourvue d'articulations (10a, 10b), ladite dernière tige (8) s'articulant avec la bielle (20) sur un pivot (13a), caractérisé en ce que ledit pivot est placé à une distance de l'axe fixe (11) de la dernière tige (8) qui ne dépasse pas la distance entre les articulations (10a, 10b) de la première tige (10), et en ce que les articulations (10a, 10b) de la première tige (10) sont placées à une distance réciproque qui est inférieure à la distance entre les articulations correspondantes d'extrémité de la dernière tige (8).
  2. Appareil selon la revendication 1, caractérisé en ce que ledit élément élastique (6) cède le long d'une ligne d'action (14) essentiellement verticale.
  3. Appareil selon la revendication 2, caractérisé en ce que ledit élément élastique (6) est actionné par un ressort de compression.
  4. Appareil selon la revendication 1, caractérisé en ce que ladite chaíne cinématique (7a) est fixée aux axes fixes (5, 11) de la structure (2) et comprend des tiges (10, 9, 8) de longueurs adaptées à définir un mécanisme quadrilatéral articulé avec deux balanciers (10, 8) qui oscillent par rapport à la structure (2), sont reliés par une bielle intermédiaire (9) et sont fixés à la porte (3) et à l'élément élastique (6).
  5. Appareil selon la revendication 1, caractérisé en ce que ledit pivot (13a) reliant réciproquement l'élément élastique (6) et la dernière tige (8) est décalé latéralement par rapport à une droite (15) passant par les articulations d'extrémité (8a, 8b) de la dernière tige (8).
  6. Appareil selon la revendication 4, caractérisé en ce que ledit pivot (13a) est décalé par rapport à la droite (15) du même côté que la porte (3).
  7. Appareil selon la revendication 1, caractérisé en ce qu'il comprend des moyens de réglage du décalage du pivot (13a) par rapport à la droite (15) passant par les articulations d'extrémité (8a, 8b) de la dernière tige (8).
  8. Appareil selon la revendication 4, caractérisé en ce que lesdits moyens de réglage comprennent une fente (16) réalisée sur la dernière tige (8) et dans laquelle fente (16) réalisée sur la dernière tige (8) et dans laquelle s'engage le pivot (13a) reliant l'élément élastique (6), et une vis de réglage (17) opérationnellement placée entre la fente (16) et le pivot (13a) pour faire varier la position de ce même pivot (13a) par rapport à ladite droite (15).
  9. Appareil selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est réalisé en un corps unique.
  10. Appareil selon la revendication 4, caractérisé en ce que ledit quadrilatère articulé présente, quand la porte (3) est dans la position fermée, un angle (B) mesurant en substance 80° entre la première tige (10) et une droite (50) passant par les axes fixes (5, 11) ; un angle (G) mesurant en substance 80° entre la dernière tige (8) et ladite droite (50) ; un angle (D) mesurant en substance 80° entre la dernière tige (8) et la bielle intermédiaire (9) ; un angle (T) mesurant en substance 120° entre la bielle intermédiaire (9) et la première tige (10) ; un angle (F) mesurant en substance 70° entre ladite droite (50) passant par les axes fixes (5, 11) et une droite (51) passant par l'axe d'articulation (11) de la dernière tige (8) et le pivot (13a) d'articulation de l'élément élastique (6) ; ledit quadrilatère articulé prenant pour ces angles, quand la porte (3) est dans la configuration ouverte, des valeurs égales, en substance, à 170° pour l'angle (B), 10° pour l'angle (G), 160° pour l'angle (D), 20° pour l'angle (T) et 0° pour l'angle (F).
EP19970830067 1997-02-17 1997-02-17 Dispositif pour articuler une porte, en particulier une porte de lave-vaiselle, à un structure fixe Expired - Lifetime EP0858767B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE1997608589 DE69708589T2 (de) 1997-02-17 1997-02-17 Vorrichtung zum Anlenken einer Tür, insbesondere einer Geschirrspülmaschinentür, an eine feste Struktur
ES97830067T ES2169344T3 (es) 1997-02-17 1997-02-17 Dispositivo para abisagrar una puerta, en particular una puerta de lavavajillas, a una estructura fija.
EP19970830067 EP0858767B1 (fr) 1997-02-17 1997-02-17 Dispositif pour articuler une porte, en particulier une porte de lave-vaiselle, à un structure fixe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19970830067 EP0858767B1 (fr) 1997-02-17 1997-02-17 Dispositif pour articuler une porte, en particulier une porte de lave-vaiselle, à un structure fixe

Publications (2)

Publication Number Publication Date
EP0858767A1 EP0858767A1 (fr) 1998-08-19
EP0858767B1 true EP0858767B1 (fr) 2001-11-28

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ID=8230571

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970830067 Expired - Lifetime EP0858767B1 (fr) 1997-02-17 1997-02-17 Dispositif pour articuler une porte, en particulier une porte de lave-vaiselle, à un structure fixe

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EP (1) EP0858767B1 (fr)
DE (1) DE69708589T2 (fr)
ES (1) ES2169344T3 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20010674A1 (it) * 2001-11-06 2003-05-06 Cmi Srl Dispositivo a cerniera controbilanciata con spostamento verticale perun portello
ATE303747T1 (de) * 2003-07-28 2005-09-15 Bonferraro Spa Eingebautes haushaltsgerät mit vorderen schönheitspaneelen
KR101229032B1 (ko) * 2005-04-27 2013-02-04 호시자키 덴키 가부시키가이샤 식기 세척기
CN101509336B (zh) * 2009-03-13 2012-07-04 常州市威普电子科技有限公司 用于家用电器上的铰链
EP2453091B1 (fr) * 2010-11-11 2016-03-16 Electrolux Home Products Corporation N.V. Ensemble de charnière pour appareils domestiques disposant d'une porte avant pivotée horizontalement
EP2912984B1 (fr) * 2014-02-28 2017-11-15 Nuova Star S.p.A. Charnière pour portes d'appareils ménagers
CN108487806B (zh) * 2018-02-02 2023-08-15 江苏玖星精密科技集团有限公司 一种具自动闭合和悬停功能的双支点洗碗机铰链

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2686120B1 (fr) * 1992-01-10 1995-10-06 Esswein Sa Appareil, tel qu'un appareil electromenager, equipe d'une porte a axe de pivotement horizontal et d'un dispositif d'equilibrage du poids de la porte destinee a etre equipee d'un panneau d'habillage.
IT1274837B (it) * 1994-07-15 1997-07-25 Cmi Srl Sistema di controbilanciamento con registro dell'azione controbilanciante per cerniere, particolarmente indicato per cerniere ad asse di articolazione orizzontale per elettrodomestici.

Also Published As

Publication number Publication date
DE69708589T2 (de) 2002-07-25
ES2169344T3 (es) 2002-07-01
DE69708589D1 (de) 2002-01-10
EP0858767A1 (fr) 1998-08-19

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