EP0919776A2 - Scharniervorrichtung, insbesondere für eine Tür eines elektrischen Haushaltsgerätes o.dgl., mit selbstregulierendem Gewichtsausgleich - Google Patents

Scharniervorrichtung, insbesondere für eine Tür eines elektrischen Haushaltsgerätes o.dgl., mit selbstregulierendem Gewichtsausgleich Download PDF

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Publication number
EP0919776A2
EP0919776A2 EP98122491A EP98122491A EP0919776A2 EP 0919776 A2 EP0919776 A2 EP 0919776A2 EP 98122491 A EP98122491 A EP 98122491A EP 98122491 A EP98122491 A EP 98122491A EP 0919776 A2 EP0919776 A2 EP 0919776A2
Authority
EP
European Patent Office
Prior art keywords
sliding
door
frontal wall
shaped element
support element
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
EP98122491A
Other languages
English (en)
French (fr)
Other versions
EP0919776B1 (de
EP0919776A3 (de
Inventor
Eros Gherardi
Teresa Ghidini
Ermes Degli Espositi
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.)
CMI SRL
Original Assignee
Cmisrl
CMI SRL
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26330368&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0919776(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from IT97BO000689 external-priority patent/IT1296566B1/it
Priority claimed from IT98BO000490 external-priority patent/IT1304476B1/it
Application filed by Cmisrl, CMI SRL filed Critical Cmisrl
Publication of EP0919776A2 publication Critical patent/EP0919776A2/de
Publication of EP0919776A3 publication Critical patent/EP0919776A3/de
Application granted granted Critical
Publication of EP0919776B1 publication Critical patent/EP0919776B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/02—Doors specially adapted for stoves or ranges
    • F24C15/023—Mounting of doors, e.g. hinges, 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
    • 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
    • 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
    • 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
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/252—Type of friction
    • E05Y2201/26—Mechanical friction
    • 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
    • E05Y2900/308—Application of doors, windows, wings or fittings thereof for domestic appliances for ovens

Definitions

  • the present invention concerns the production of components for household electric appliances and the like.
  • the object of the invention is an hinge device of the self-regulating type, fit to allow the articulation between the door and the related appliance body, preferably a dishwashers.
  • the known hinges such as self-regulating, are fit to produce a counterbalancing action during the opening and closing phases of the door linked thereto. Every hinge is provided with a kinematic motion, moving as regards the hinge movement, including elastic means, tensile or compressive stressed, in such a way that its elastic reaction varies as regards the door position and is fit to balance the weight of the door during its opening.
  • Such hinges include a series of lever elements mutually pivoted fit to constitute a mechanism providing the gradually increasing of the reaction strength of the elastic element during the door opening and so counterbalancing the moment produced by the door weight that increase as regards the increasing of the projection from the appliance frame and therefore by to increasing the lever arm.
  • the main drawback of the known hinges is that to vary the counterbalancing strength exerted by the spring assembled with the appliance is necessary to replace said spring with another able to produce a suitable counterbalancing strength.
  • the known hinges are provided with means fit to allow the adjustment of the counterbalancing force of the elastic means as regards the door weight.
  • adjustment means are constituted by small cable that, suitably tensioned through regulation screws accessible from outside of the appliance, allow opportunely to pre-load the spring in such a way to vary its initial elastic reaction.
  • the regulation systems of the hinge devices do not always allow a wide adjustment range of the counterbalancing action, therefore the same hinge is not often usable in different appliances having doors of different weights or providing for panels of different weights.
  • the main object of the present invention is to propose a hinge device, fit to allow the articulation between the door and the related appliance body, having a counterbalancing self-balancing and self-regulating system, without adjustment means fit to automatically counterbalance doors of variable weight within a reasonable range
  • Another object of the present invention is to propose a device of simple making, easy installation, sure and precise use.
  • Said objects are archived according to the claim content.
  • numeral 1 refers to a hinge device, particularly for the door of electric appliances and the like, including a coupling element 2, a support element 3, first counterbalancing means 6 and a shaped element 9.
  • the coupling element 2 is fixed to the frame 10 of the hinge device 1 fixable to the structure, known and not illustrated, of each electric appliance.
  • the support element 3 is pivoted to the coupling element 2 through a pivot 5 allowing the rotation.
  • a joint plate 4 is fixed near to a end of the support element 3 to which the door, known and not illustrated, is fixed. Moreover, there is an abutment 20 in correspondence of the remaining end of the support element 3.
  • the coupling element 2 has a frontal wall 12 interposed between the support element 3 and the shaped element 9.
  • the first counterbalancing means 6 are constituted by a spring 22 interposed between the head of a rod 23 and a seat 24 therefrom the free end of the rod 23 protrudes.
  • the shaped element 9 has a superior portion 9a hinged to the free end of the rod 23 and an inferior portion 9c hinged to the support element 3 through a pivot 26.
  • Such shaped element 9 has middle portion 9b defining an inner contour 7 and an outer contour 8, opposed to the frontal wall 12.
  • the operation of the hinge device 1 illustrated in the figures 1 and 2 is very simple, because the door opening of the appliance coupled to the support element 3 causes the passage of this latter from a closing condition C, in which the support element 3 is faced to the frontal wall 12 of the coupling element 2, and therefore the door is turned toward the body of the appliance in such a way to close the frontal opening thereof, to an extreme opening condition A, in which the longitudinal axle of the support element 3 is nearly orthogonal to the frontal wall 12, and therefore the door is almost orthogonal with the frontal opening of the appliance.
  • the opening condition A is mainly limited by the abutment 20 of the support element 3 that, consequently its rotation, contacts inwardly the frontal wall 12 of the coupling element 2
  • the support element 3 rotates on the pivot 5 causing the moving of the shaped element 9.
  • the sliding block 13 is forced to slide with friction on the frontal wall 12 exerting thereon a friction resistance force of proportionally increasing intensity as regards the door opening and therefore as regards the passage from the closing condition C to the opening condition A.
  • the rod 23 is moved downward causing the subsequent progressive compression of the spring 22 exerting an antagonist force proportionally increasing with the door opening and able to oppose the weight force.
  • the combined action of the antagonist force of the first counterbalancing means 6 and the sliding with friction of the sliding block 13 along the frontal wall 12 allows a continuous balancing of the door and of a possible covering panel coupled thereto so allowing the same door to balance in correspondence of each intermediate opening angle reached by the door.
  • the contact surface of the sliding block 13 with the frontal wall 12 is constituted by nylon enriched with a percentage of graphite ranging between 5% and 20%, and preferably it is of 12%, so that to increase the sliding friction between the surfaces.
  • the self-regulating effect is completely reached with a whole weight of the door and/or panel varying from 6 to 10 kilograms.
  • a variant of the preferred embodiment of the hinge device 1 object of the present invention includes the use of second counterbalancing means 15.
  • Such second counterbalancing means 15 are fixed to the coupling element 2, next to its end opposed to the frontal wall 12, and are active with the outer contour 8 of the shaped element 9.
  • These means includes a lever 17 whole oscillation plain is parallel to the moving plane of the shaped element 9.
  • An end of the lever 17 is hinged, through a pivot 18, to the coupling element 2 and the remaining end is pivoted to the end of elastic means 19 while the middle portion supports an sliding element 14, directly in contact with the outer contour 8, for instance constituted by a free rolls 14a.
  • the elastic means 19 include a guiding rod 19b of a helical spring 19 subjected to compression, whose free end is slidingly supported by a bracket 16 fixed to the frame 10.
  • the operation of the hinge device 1, according to the variant shown in the figures 3 and 4, are identical to the operation of the preferred embodiment of figures 1 and 2, with the only difference that the second counterbalancing means 15 allow to exert a further antagonistic force on the shaped element 9 proportionally increasing in correspondence of the passage from the closing condition C to the opening condition A of the door.
  • the rolls 14a rolls or, however, slides on the outer contour 8, particularly from the middle portion 9b toward the superior portion 9a, causing the rotation of the lever 17 around the pivot 18 and therefore the crushing, that is the compression, of the spring 19a onto the bracket 16 which transmits an equal and contrary force to such stress to the shaped element 9 for interposition of the roll 14a.
  • the shaped element 9 is subjected to a further antagonist force opposing the movement thereof during the passage from the closing condition C to the extreme opening condition A and therefore increases the force against the weight force of the door and/or of the optional covering panel applied thereto.
  • the self-regulating effect is completely reached for a total weight of the door and/or of the panel varying from 6 to 14 kilograms.
  • sliding element 14 can also be constituted by a sliding block 14a which slides or however runs on the outer contour 8.
  • this hinge device 1 a self-balancing condition of the weight of the door and/or of the panel-door is reached without using any adjustment means of antagonistic force of the counterbalancing means, so making a hinge device completely self-regulating for a wide range of the weight of the door and the door together with the covering panel.
  • the antagonistic force of the first counterbalancing means 6 and the further antagonist force of the second counterbalancing means 15 vary proportionally to the opening angle of the door and therefore increase in the passage from the closing C to opening A conditions, and decrease in the inverse passage, however always proportionally respectively to the increase or to the decrease of weight force of the door or of the door with the covering panel.
  • the figures 5 and 6 illustrate a second embodiment of the hinge device 1 previously described, in which the inner contour 7 of the shaped element 9 is almost cycloidal and has an abutment 33 near the end of the superior portion 9a, and moreover is slidingly driven by the sliding means 30 constituted by a free roll 11 supported by the coupling element 2, while the outer contour 8 is almost rectilinear.
  • the portion of the shaped element 9 included between the middle portion 9b and the second end 9c has a recess 21.
  • the operation of the hinge device 1 of this second embodiment is identical to the operation of the preferred embodiment with the exception that the extreme opening A condition is not only mainly caused by the abutment 20 of the support element 3 that, subsequently its rotation, inwardly contacts the frontal wall 12 of the coupling element 2, but also because the recess 21 of the shaped element 9 is conformed in such a way to lean firmly on the pivot 5 and the abutment 33 is fit to contact the external surface of the roll 11.
  • a variant of the second embodiment of the hinge device 1 includes the use of the second counterbalancing means 15 similar to those of the preferred embodiment with the exception that the lever 17 is pivoted to the pivot 18 in its central zone, one of its end is bound to the elastic means 19 while the free end rotatingly supports the free roll 14a.
  • the elastic means 19 are constituted by a spring 19a whose ends are fixed respectively to the lever 17 end and to a bracket 16 hook so that the spring 19a works in traction.
  • the elastic means 19 can be fixed to the lever 17 between the pivot 18 and the free end of this latter, supporting the sliding element 14, so that the spring 19a of the elastic means 19 works in compression rather than in traction
  • the main advantage of the present invention is therefore to furnish a hinge device, designed to allow the articulation between the door and the body of a related appliance, fitted with a counterbalancing system of the self-adjusting and self-balancing type, without adjustment means, able to counterbalance doors of weight varying automatically within a reasonable but wide range.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Hinges (AREA)
  • Extensible Doors And Revolving Doors (AREA)
EP98122491A 1997-11-27 1998-11-27 Scharniervorrichtung, insbesondere für eine Tür eines elektrischen Haushaltsgerätes o.dgl., mit selbstregulierendem Gewichtsausgleich Expired - Lifetime EP0919776B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ITBO970689 1997-11-27
IT97BO000689 IT1296566B1 (it) 1997-11-27 1997-11-27 Dispositivo di cerniera, in particolare per il portello di apparecchi elettrodomestici e simili, con sistema di controbilanciamento
ITBO980490 1998-08-06
IT98BO000490 IT1304476B1 (it) 1998-08-06 1998-08-06 Dispositivo di cerniera, in particolare per il portello di apparecchielettrodomestici e simili, con sistema di controbilanciamento a

Publications (3)

Publication Number Publication Date
EP0919776A2 true EP0919776A2 (de) 1999-06-02
EP0919776A3 EP0919776A3 (de) 2001-11-07
EP0919776B1 EP0919776B1 (de) 2004-05-26

Family

ID=26330368

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98122491A Expired - Lifetime EP0919776B1 (de) 1997-11-27 1998-11-27 Scharniervorrichtung, insbesondere für eine Tür eines elektrischen Haushaltsgerätes o.dgl., mit selbstregulierendem Gewichtsausgleich

Country Status (3)

Country Link
EP (1) EP0919776B1 (de)
DE (1) DE69824122T2 (de)
ES (1) ES2221111T3 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1840309A1 (de) * 2006-03-29 2007-10-03 Hetal-Werke Franz Hettich GmbH & Co. KG Klappenhalter für eine Möbelklappe
WO2007107848A3 (en) * 2006-03-20 2007-12-06 Cmi Srl Balanced hinge device
EP1764557A3 (de) * 2005-09-14 2017-10-18 C.M.I. S.r.l. Kompaktes Türscharnier
EP2912984B1 (de) * 2014-02-28 2017-11-15 Nuova Star S.p.A. Scharnier für Türen von Haushaltsgeräten
EP2678469A4 (de) * 2011-02-24 2018-03-14 LG Electronics Inc. Wäschebehandlungsvorrichtung
IT201800009511A1 (it) * 2018-10-16 2020-04-16 Cmi Cerniere Mecc Industriali Srl Dispositivo a cerniera con fermo labile in posizione di parziale apertura

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2086667B1 (de) 2006-11-10 2012-06-27 innostarter AG Aufschäumen flüssiger lebensmittel
ATE525948T1 (de) 2008-05-08 2011-10-15 Electrolux Home Prod Corp GESCHIRRSPÜLER MIT DÄMPFMITTEL ZUM DÄMPFEN BEIM SCHLIEßEN DER TÜRE

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3450125A (en) * 1966-05-24 1969-06-17 Kelvinator Inc Counterbalanced hinge for oven doors
US3603658A (en) * 1969-05-01 1971-09-07 Maytag Co Latch for dishwasher door
US4269165A (en) * 1979-06-11 1981-05-26 Mitchell Industries, Inc. Oven hinge
EP0565809B1 (de) * 1992-04-17 1996-10-09 NUOVA STAR S.r.l. Perfektioniertes Scharnier zum Halten von Türen an einer Tragstruktur

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1764557A3 (de) * 2005-09-14 2017-10-18 C.M.I. S.r.l. Kompaktes Türscharnier
WO2007107848A3 (en) * 2006-03-20 2007-12-06 Cmi Srl Balanced hinge device
RU2435920C2 (ru) * 2006-03-20 2011-12-10 Ч.М.И. С.Р.Л. Сбалансированное шарнирное устройство
EP1840309A1 (de) * 2006-03-29 2007-10-03 Hetal-Werke Franz Hettich GmbH & Co. KG Klappenhalter für eine Möbelklappe
EP2678469A4 (de) * 2011-02-24 2018-03-14 LG Electronics Inc. Wäschebehandlungsvorrichtung
EP2912984B1 (de) * 2014-02-28 2017-11-15 Nuova Star S.p.A. Scharnier für Türen von Haushaltsgeräten
IT201800009511A1 (it) * 2018-10-16 2020-04-16 Cmi Cerniere Mecc Industriali Srl Dispositivo a cerniera con fermo labile in posizione di parziale apertura

Also Published As

Publication number Publication date
DE69824122D1 (de) 2004-07-01
DE69824122T2 (de) 2004-10-28
ES2221111T3 (es) 2004-12-16
EP0919776B1 (de) 2004-05-26
EP0919776A3 (de) 2001-11-07

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