EP1066789B1 - Hebevorrichtung für den unteren Korb einer Geschirrspülmaschine - Google Patents

Hebevorrichtung für den unteren Korb einer Geschirrspülmaschine Download PDF

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Publication number
EP1066789B1
EP1066789B1 EP00202106A EP00202106A EP1066789B1 EP 1066789 B1 EP1066789 B1 EP 1066789B1 EP 00202106 A EP00202106 A EP 00202106A EP 00202106 A EP00202106 A EP 00202106A EP 1066789 B1 EP1066789 B1 EP 1066789B1
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EP
European Patent Office
Prior art keywords
lifting device
telescopic shaft
dishwasher
levers
lower rack
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
EP00202106A
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English (en)
French (fr)
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EP1066789A1 (de
Inventor
Silvano Dr. Fumagalli
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.)
Candy SpA
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Candy SpA
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Publication date
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Publication of EP1066789A1 publication Critical patent/EP1066789A1/de
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    • 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
    • A47L15/50—Racks ; Baskets
    • A47L15/506—Arrangements for lifting racks for loading or unloading purposes

Definitions

  • the present invention refers to a lifting device for the lower rack of a dishwasher.
  • Known dishwashers usually comprise two racks, an upper one and a lower one, for containing dishes and pans to be washed.
  • loading of the lower rack obliges the operator to continuous and sudden bending movements in order to take the dishes and the pans from the kitchen top and to position them between the grids of such rack, that is located at an extremely low position.
  • a solution to this problem consists in the realisation of a lifting device for the lower rack of the dishwasher that allows to bring it to a height equal to that of the upper rack.
  • the most recent known art exhibits a lifting device in which a lower rack of a dishwasher is placed on a base that is connected with the upper ends of two crossed levers that are hinged so to be able to slide on appropriate guides of the base.
  • the lower ends of the crossed levers are hinged on respective pistons that are capable to slide in two or more hydraulic cylinders that are positioned on the dishwasher door.
  • a hydraulic or pneumatic compressor feeds a fluid to a valve that distributes it through hydraulic circuits to two or more hydraulic cylinders. The latter, that are necessary to balance the rack on two sides, simultaneously transmit opposite movements to the crossed levers and thus cause lifting of the rack.
  • the aforesaid lifting device involves an increase in the thickness of the door of the dishwasher and an increase in the weight of the same.
  • US 5 971 513 discloses a lifting device for the lower rack of a dishwasher which is provided with two pairs of crossed levers hinged to each other.
  • object of the present invention is to realise a lifting device for the lower rack of a dishwasher that has a simpler structure and does not make the closing door of the dishwasher heavy, while assuring at the same time its water tightness.
  • FIGS 1 and 2 there is shown a lower rack 20 provided with a lifting device 1 according to the invention, that is placed above the closing door 30 of the dishwasher in open position.
  • the lower rack 20 is connected at the sides with two pairs of rectilinear levers 6-7 whose upper ends are turningly hinged in 9-10 on coupling boxes 11-12 that are capable to slide along bushes 13-14 that are fixed on a longitudinal bar 24 belonging to the lower rack 20 of the dishwasher.
  • the two pairs of rectilinear levers 6-7 cross at a center line in a fulcrum point 8 and they extend in height.
  • the lower ends of the levers 6-7 are in turn provided with wheels 25-26 that are capable to slide on horizontal guides 80, in proximity of the sides of the closing door 30 of the dishwasher, as shown in Figure 6.
  • the aforesaid lower ends of the levers 6-7 are in addition hinged in 18-19 on respective supports 16-17, internally threaded, that are controlled to be drawn horizontally near and apart from each other along the sides of the closing door 30 by means of their screw engagement with tubular parts 51-52, that are externally threaded.
  • These latter tubular parts 51-52 are identical but with threads opposite to each other and they are fixed to respective ends of a tubular part 53.
  • the tubular parts 51-52 and the tubular part 53 are made up of two identical pieces that are symmetrically mounted on and fixed to each other by means of flange connection 200.
  • Said tubular part 53 is the most external terminal part of a telescopic shaft 40 that extends along the bottom 50 of the washing tub 70 of the dishwasher and that is also made up of an intermediate tubular part 3, that is capable to slide inside the tubular part 53 and that is connected with it for the rotation by means of a coupling key 9 that is positioned at a first end, and by an internal rod 4 that is coaxial to the internal tubular part 3 and connected with it by means of a coupling key 91.
  • An external spring 33 is interposed between the second end of the intermediate tubular part 3 and a round projection 48 of the rod 4.
  • An internal spring 32 is in turn interposed between the external end of the tubular part 53 and the internal end of the rod 4.
  • the rod 4 terminates with a conic part 41 that is inserted in a corresponding cavity of a conic body 43 that is fixed to the back wall 44 of the washing tub 70 of the dishwasher.
  • a conic part 41 that is inserted in a corresponding cavity of a conic body 43 that is fixed to the back wall 44 of the washing tub 70 of the dishwasher.
  • one of the two telescopic shafts 40 that make up the lifting device 1, that is symmetrical in all the rest to a longitudinal median plane, is connected through the conic body 43 to an electric driving motor 42 that is in turn fixed to the back wall 44.
  • the rotation motion of the telescopic shaft 40 connected with the electric motor is transmitted to the other telescopic shaft 40 by means of a pair of pinions 2 that are engaged with respective worm screws 5 that are fixed to the ends of a propeller shaft not visible in the figures, that extends transversally of the washing tub 70.
  • the mutual slide of the tubular parts 53 and 3 and of the rod 4 and the extension of the springs 32 and 33 facilitates the extraction of the lower rack 20 from the washing tub of the dishwasher.
  • the rack 20 by means of the wheels 25-26, slides on the open door 30 of the dishwasher up to a position in which a round extension 22 of the tubular part 53 of a telescopic shaft 40 gets in abutment with a lock 29 of the door 30 of the dishwasher ( Figure 1).
  • the telescopic shafts 40 are in the position of maximum extension that is possible for them, with the tubular part 3 almost completely out of the tubular part 53 and the rod 4 also almost completely out of the tubular part 53 and of the tubular part 3 ( Figures 3-5).
  • a contact sensor 23 placed on the lock 29 of the door 30 gives then the consent or even automatically starts the electric motor 42 that provides to the rotation of the rod 4 connected with it.
  • the rotary motion is transmitted by the rod 4 through the key 91 to the tubular intermediate part 3 and from the latter to the external tubular part 53 by means of the key 9.
  • the transmission device made up of the pinions 2 and of the pair of screws without end 5 provides to the rotation of the other telescopic shaft 40.
  • the rotation of the tubular parts 53 allows the rotation of the parts 51, 52 that are fixedly mounted to it and, owing to the threaded engagement of the latter with the supports 16 and 17, the consequent movement of mutual approach of the supports 16-17 and likewise consequent greater inclination upward of the levers 6-7.
  • the upper ends of the levers 6-7 therefore get near to each other by sliding with their coupling boxes 11-12 along the respective bushes 13-14 and they move upward thus causing as a consequence the lifting of the rack 20, shown in Figure 2.
  • the maximum lifting that is fixed by an appropriate lock not shown in the drawings, corresponds to the positioning of the lower rack 20 at a height substantially equivalent to the height of an upper rack of the dishwasher so that the loading of dishes and of pans to be washed becomes easier.
  • the rack 20 gets pushed inside the washing tub of the dishwasher with consequent shortening of the telescopic shafts 40 and compression of the springs 32 and 33.
  • the load of pans and dishes in the rack 20 exceeds the load of the springs 32 and 33 in order to maintain the rack 20 inside the dishwasher.
  • a variation of the movement system of the telescopic shaft 40 connected with the electric driving motor 42 provides a connection of the telescopic shaft 40 to said electric motor by means of a flexible wire with appropriate connector, that can be partially extracted during the stage of the rack extraction.

Landscapes

  • Washing And Drying Of Tableware (AREA)

Claims (12)

  1. Hubvorrichtung für den unteren Korb (20) einer Geschirrspülmaschine, wobei die Geschirrspülmaschine eine Spülwanne (70) mit einer Bodenwand (50), einer Rückwand (44) und einer Vorderfläche aufweist, die mit einer Verschlusstüre (30) vorgesehen ist, und zwei Paare von sich kreuzenden Hebeln (6, 7), welche gelenkig miteinander verbunden sind, dadurch gekennzeichnet, daß die Hebel (6, 7) gelenkig miteinander an einer Mittellinie (8) verbunden sind, die Hebel (6, 7) obere Enden zur Abstützung des unteren Korbs (20) und untere Enden haben, die in gesteuerter Weise aufeinander zu und von einander weg durch die Drehbewegung von wenigstens einer Teleskopwelle (40) bewegbar sind, die von den unteren Hebelenden getragen wird, und längs der Bodenwand (50) der Spülwanne (70) horizontal verläuft, und daß die Drehbewegung der wenigstens einen Teleskopwelle (40) durch eine Motoreinrichtung (42) gesteuert wird, die fest an der Rückwand (44) der Spülwanne (70) angebracht ist.
  2. Hubvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die wenigstens eine Teleskopwelle (40) wechselseitig gleitbewegliche Teile (53, 3, 4) umfaßt, die miteinander zur Ausführung einer Drehbewegung mittels einer Kupplungseinrichtung (9, 91) verbunden sind.
  3. Hubvorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Motoreinrichtung (42) einen Elektromotor aufweist, welcher die Drehbewegung der wenigstens einen Teleskopwelle (40) liefert.
  4. Hubvorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß sie zwei Teleskopwellen (40) aufweist, die längs den zugeordneten Seiten der Spülwanne (70) der Geschirrspülmaschine verlaufen, daß eine der Teleskopwellen (40) die Bewegung von dem Elektromotor (42) direkt erteilt bekommt, und die Bewegung auf die andere Teleskopwelle (40) mit Hilfe einer Übertragungseinrichtung mit Zahnrädern (2) und Schneckenspindeln (5) überträgt, welche quer zur Spülwanne (70) verlaufen.
  5. Hubvorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß das untere Ende der Paare von sich kreuzenden Hebeln (6, 7) an zugeordneten Trägern (16, 17) angelenkt sind, die mit Hilfe eines Gewindeeingriffs mit einem externen, rohrförmigen Teil (53) mit wenigstens einer Teleskopwelle (40) in horizontaler Richtung aufeinander zu und von einander weg bewegt werden können.
  6. Hubvorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Träger (6, 17) zugeordnete Räder (26, 25) tragen, welche in zugeordneten Führungen (80) der Verschlusstüre (30) der Geschirrspülmaschine gleitend bewegbar sind, wenn diese in ihrer Offenposition ist.
  7. Hubvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die oberen Enden der Hebel (6, 7) an zugeordneten Kupplungskästen (11, 12) angelenkt sind, die auf Gleitbuchsen (13, 14) gleitbeweglich gelagert sind, welche fest mit dem unteren Korb (20) verbunden sind.
  8. Hubvorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß das äußere rohrförmige Teil (53) wenigstens einer Teleskopwelle (40) fest angebrachte rohrförmige Teile (51, 52) trägt, welche mit Außengewindegängen versehen sind, welche gegenläufig ausgelegt sind, wobei die rohrförmigen Teile (51, 52) in Gewindeeingriff mit den Trägern (16, 17) der sich kreuzenden Hebel (6, 7) sind.
  9. Hubvorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß die rohrförmigen Teile (51, 52) und das äußere rohrförmige Teil (53) wenigstens einer Teleskopwelle (40) aus zwei identischen Teilen zusammengesetzt sind, welche symmetrisch angeordnet und fest miteinander mit Hilfe einer Flanschverbindung (200) verbunden sind.
  10. Hubvorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß sie eine elastische Einrichtung (32, 33) aufweist, welche zwischen den sich hin- und hergehend beweglichen Gleitteilen (53, 3, 4) der wenigstens einen Teleskopwelle (40) angeordnet ist, um die letztgenannte in Richtung ihrer maximalen Auszugsposition vorzubelasten.
  11. Hubvorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß sie eine Verriegelungseinrichtung (201) aufweist, welche elastisch mit den Zahnrädern (2) verbunden ist, um die wenigstens eine Teleskopwelle (40) in einem Zustand mit maximaler axialer Kompression zu verriegeln.
  12. Hubvorrichtung nach Anspruch 11, dadurch gekennzeichnet, daß die Verriegelungseinrichtung (201) aus Scheiben zusammengesetzt ist.
EP00202106A 1999-07-01 2000-06-15 Hebevorrichtung für den unteren Korb einer Geschirrspülmaschine Expired - Lifetime EP1066789B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI991455 1999-07-01
IT1999MI001455A IT1313217B1 (it) 1999-07-01 1999-07-01 Dispositivo elevatore del cestello inferiore di una lavastoviglie.

Publications (2)

Publication Number Publication Date
EP1066789A1 EP1066789A1 (de) 2001-01-10
EP1066789B1 true EP1066789B1 (de) 2004-04-14

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EP00202106A Expired - Lifetime EP1066789B1 (de) 1999-07-01 2000-06-15 Hebevorrichtung für den unteren Korb einer Geschirrspülmaschine

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EP (1) EP1066789B1 (de)
DE (1) DE60009799T2 (de)
IT (1) IT1313217B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9282877B2 (en) 2012-03-21 2016-03-15 Whirlpool Corporation Dishwasher with a pivot system for a dish rack
DE102016225807A1 (de) 2016-12-21 2018-06-21 BSH Hausgeräte GmbH Haushaltsgeschirrspülmaschine
DE102017211203A1 (de) 2017-06-30 2019-01-03 BSH Hausgeräte GmbH Hebesystem für eine Haushaltsgeschirrspülmaschine oder ein Möbel
US10174785B1 (en) 2017-11-15 2019-01-08 Electrolux Home Products, Inc. Wheel bushing
DE102017213699A1 (de) 2017-08-07 2019-02-07 BSH Hausgeräte GmbH Haushaltsgeschirrspülmaschine

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8387634B2 (en) 2008-08-27 2013-03-05 Electrolux Home Products, Inc. Assisted-movement system for one of a rack and a door of an appliance
PL2457489T3 (pl) 2010-11-30 2014-09-30 Electrolux Home Products Corp Nv Zmywarka kompaktowa
WO2014102374A1 (en) * 2012-12-31 2014-07-03 Arcelik Anonim Sirketi A dishwasher comprising a height adjustable lower rack
EP2941171A1 (de) * 2012-12-31 2015-11-11 Arçelik Anonim Sirketi Geschirrspülmaschine mit einem höhenverstellbaren unteren korb
DE102014226820A1 (de) 2014-12-22 2016-06-23 BSH Hausgeräte GmbH Unterkorb für eine Haushaltsgeschirrspülmaschine mit Unterkorb-Anhebung
DE102015201806A1 (de) * 2015-02-03 2016-08-04 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine, insbesondere Haushaltsgeschirrspülmaschine
DE102015102500A1 (de) * 2015-02-20 2016-08-25 Paul Hettich Gmbh & Co. Kg Schiebe- und Hubmechanismus einer Ablage eines Möbels oder Haushaltsgeräts, Möbel und Haushaltsgerät
DE102015002945A1 (de) * 2015-03-10 2016-09-15 Daniel Jordan Schublade, Möbelstück mit Schublade und Verfahren zum Öffnen einer Schublade
DE102015211362A1 (de) 2015-06-19 2016-12-22 BSH Hausgeräte GmbH Hebevorrichtung und Geschirrspülmaschine
EP3085294A1 (de) 2015-04-24 2016-10-26 BSH Hausgeräte GmbH Hebevorrichtung und geschirrspülmaschine
DE102015208661A1 (de) 2015-05-11 2016-11-17 BSH Hausgeräte GmbH Geschirrspülmaschine
DE102015216057A1 (de) 2015-08-21 2017-02-23 BSH Hausgeräte GmbH Hebevorrichtung und Geschirrspülmaschine
US10080479B2 (en) 2016-01-18 2018-09-25 Haier Us Appliance Solutions, Inc. Lower rack assembly for dishwasher appliance
US10231599B2 (en) 2016-03-28 2019-03-19 Haier Us Appliance Solutions, Inc. Lower rack assembly for dishwasher appliance
DE102016217930A1 (de) 2016-09-20 2018-03-22 BSH Hausgeräte GmbH Haushaltsgeschirrspülmaschine
DE102016217975A1 (de) 2016-09-20 2018-03-22 BSH Hausgeräte GmbH Haushaltsgeschirrspülmaschine
US10159398B2 (en) 2016-12-27 2018-12-25 Midea Group Co., Ltd. Dishwasher rack system
US9895046B1 (en) 2016-12-27 2018-02-20 Midea Group Co., Ltd. Dishwasher rack lift system
TR201715852A2 (tr) * 2017-10-16 2019-05-21 Guelsen Guengen Bulaşik maki̇nesi̇ hareketli̇ raf yapilanmasi
EP3801181A1 (de) 2018-05-25 2021-04-14 Arçelik Anonim Sirketi Geschirrspülmaschine mit einem beweglichen korb
DE102019215312A1 (de) * 2019-10-07 2021-04-08 BSH Hausgeräte GmbH Haushaltsgeschirrspülmaschine
CN110742566A (zh) * 2019-11-02 2020-02-04 湖北汽车工业学院 一种家用自动洗刷一体式洗碗机

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Publication number Priority date Publication date Assignee Title
US5115822A (en) * 1991-03-20 1992-05-26 Nichols Will E Dishwasher basket assembly including lift mechanism
JPH10179495A (ja) * 1996-12-26 1998-07-07 Matsushita Electric Ind Co Ltd 食器洗い機
US5971513A (en) * 1998-03-19 1999-10-26 Cassalia; Alan B. Easy load extendable/retractable bottom dishwasher rack

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9282877B2 (en) 2012-03-21 2016-03-15 Whirlpool Corporation Dishwasher with a pivot system for a dish rack
US10123677B2 (en) 2012-03-21 2018-11-13 Whirlpool Corporation Dishwasher with a pivot system for a dish rack
US10178938B2 (en) 2012-03-21 2019-01-15 Whirpool Corporation Dishwasher with a pivot system for a dish rack
US11116380B2 (en) 2012-03-21 2021-09-14 Whirlpool Corporation Dishwasher with a pivot system for a dish rack
DE102016225807A1 (de) 2016-12-21 2018-06-21 BSH Hausgeräte GmbH Haushaltsgeschirrspülmaschine
EP3338613A1 (de) 2016-12-21 2018-06-27 BSH Hausgeräte GmbH Haushaltsgeschirrspülmaschine
DE102017211203A1 (de) 2017-06-30 2019-01-03 BSH Hausgeräte GmbH Hebesystem für eine Haushaltsgeschirrspülmaschine oder ein Möbel
DE102017213699A1 (de) 2017-08-07 2019-02-07 BSH Hausgeräte GmbH Haushaltsgeschirrspülmaschine
US10174785B1 (en) 2017-11-15 2019-01-08 Electrolux Home Products, Inc. Wheel bushing

Also Published As

Publication number Publication date
DE60009799T2 (de) 2005-04-21
IT1313217B1 (it) 2002-06-17
EP1066789A1 (de) 2001-01-10
ITMI991455A1 (it) 2001-01-01
ITMI991455A0 (it) 1999-07-01
DE60009799D1 (de) 2004-05-19

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