EP1051944B1 - Device for the adjustment in height of the upper rack of a dishwasher - Google Patents

Device for the adjustment in height of the upper rack of a dishwasher Download PDF

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Publication number
EP1051944B1
EP1051944B1 EP20000201147 EP00201147A EP1051944B1 EP 1051944 B1 EP1051944 B1 EP 1051944B1 EP 20000201147 EP20000201147 EP 20000201147 EP 00201147 A EP00201147 A EP 00201147A EP 1051944 B1 EP1051944 B1 EP 1051944B1
Authority
EP
European Patent Office
Prior art keywords
levers
dishwasher
upper rack
height
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
EP20000201147
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1051944A1 (en
Inventor
Silvano 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
Original Assignee
Candy 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 Candy SpA filed Critical Candy SpA
Publication of EP1051944A1 publication Critical patent/EP1051944A1/en
Application granted granted Critical
Publication of EP1051944B1 publication Critical patent/EP1051944B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • A47L15/504—Arrangements for changing the height of racks

Definitions

  • the present invention concerns a device for the adjustment in height of the upper rack of a dishwasher.
  • the useful positions are two, distant 40 mm or sometimes 65 mm one from the other, and the movement of the upper rack is carried out manually with the aid of a knob device that is fixedly mounted with the structure of the rack and can be coupled by snap with the fixed structure of the machine in predetermined positions.
  • object of the present invention is now to realise a device that allows to adjust the upper rack of a dishwasher in height, by placing it in any position between two maximum and minimum height extreme ones, even with loaded rack and without having to extract it from the washing tub.
  • an adjustment device characterized in that it comprises two pairs of crossed levers that are hinged to each other at a center line that extend in height inside the washing tub along respective side walls of the same, said levers having first ends operating for the support of the upper rack and second ends that are controlled to be drawn near and apart from each other by a pair of screw devices that extend horizontally along said side walls of the machine and are provided with control elements that are accessible from the front of the machine.
  • FIGS 1-4 there is shown the upper part of the washing tub 1 of a dishwasher machine that has a back wall 2, a top panel 3, two side walls 4 and a front closing door 5.
  • each couple of levers 6-7 extends in height, that are crossed at a center line in a fulcrum point 8.
  • the upper ends of each couple of levers 6-7 are turningly hinged in 9-10 on sleeves 11-12 that are capable to slide along bushings 13-14 that are fixed on a longitudinal bar 15 of the upper rack 17 of the dishwasher.
  • the lower ends are in turn provided with wheels 18-19 that are slidingly housed in respective inner 20 and outer tubular parts 20, 21 (figure 5) of a telescopic guide 22 that extends horizontally along a respective side wall 4 of the washing tub, projecting from the back wall 2 of the washing tub in order to be additionally supported and guided by pairs of bearing wheels 23 supported by the respective side wall of the tub.
  • the aforesaid lower ends of the levers 6-7 are in addition hinged in 24-25 on respective supports 38 and 39 that are controlled to be brought near or far from each other, parallel to the telescopic guide 22, by a screw device 28.
  • the latter is made up of an internal part 26, that is externally threaded, to which the support 38 is fixed, and of an external part 27, that is internally and externally threaded, that is in screw engagement with the internal part 26 and with the support 39.
  • the external part 27 of the screw device 28 is fixed for rotation to a control knob 29 that is accessible from the front of the machine, once the closing door 5 is open.
  • the upper rack 17 turningly bears a rotor or impeller 31, that is fed with water through a horizontal duct 32 that ends with a flange 33 having essentially vertical extension, with which a bellows sealing gasket 34 can be engaged, that is open frontally, placed in front of a vertically elongated opening 35 of a fixed feeding ramp 36 that extends vertically along the middle line of the back wall of the tub.
  • the vertical extension of the opening 35 and of its gasket 34 is substantially equal to the maximum excursion in height of the rack 17 and the one of the flange 33 is substantially equal to twice said maximum excursion.
  • the relative position of the opening 35 and of the flange 33 is such as that the opening 35 gets to be in correspondence of the lower end of the flange 33 when the rack 17 is in the position of maximum height and in correspondence of the upper end of the flange 33 when the rack 17 is in the position of minimum height.
  • More details on the structure and the operating mode of the coupling device, indicated as a whole by 37, made up of the flange 33, of the gasket 34 and of the opening 35 can be found in the above quoted Italian patent application n. MI98A 001390 of June 18 1998.
  • the rotation of the control knobs 29 determines the return movement of the threaded part 26 in the threaded part 27 of the screw device 28 and the sliding of the support 29 on the threaded part 27 of the same screw device 28, with consequent mutual approach of the supports 38 and 39 and also consequent greater inclination of the levers 6-7 toward the top.
  • the upper ends of the levers 6-7 therefore get near to each other by sliding with their sleeves 11-12 along the respective bushings 13-14 and in addition they move toward the top thus causing as a consequence the lifting of the rack 17 with relative rotor 31.
  • the maximum lift, that is fixed by the lock 30, corresponds to the positioning of the horizontal duct 32 in correspondence of the upper end of the opening 35 and of the relative gasket 34 ( Figures 1 and 2).
  • the adjustment in height of the rack 17 can be carried out even with the rack inserted in the washing tub and a load of dishes. That is obtained owing to the fact that the rotation of the knobs 29 can take advantage of the leverage effect of the two pairs of levers 6-7 in order to determine the variation in height of the rack with a reduced effort of rotation being applied to the knobs 29.

Landscapes

  • Washing And Drying Of Tableware (AREA)
EP20000201147 1999-05-03 2000-03-29 Device for the adjustment in height of the upper rack of a dishwasher Expired - Lifetime EP1051944B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI990939 IT1312283B1 (it) 1999-05-03 1999-05-03 Dispositivo per la regolazione in altezza del cestello superiore diuna lavastoviglie
ITMI990939 1999-05-03

Publications (2)

Publication Number Publication Date
EP1051944A1 EP1051944A1 (en) 2000-11-15
EP1051944B1 true EP1051944B1 (en) 2004-09-22

Family

ID=11382866

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000201147 Expired - Lifetime EP1051944B1 (en) 1999-05-03 2000-03-29 Device for the adjustment in height of the upper rack of a dishwasher

Country Status (3)

Country Link
EP (1) EP1051944B1 (it)
DE (1) DE60013952T2 (it)
IT (1) IT1312283B1 (it)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7775378B2 (en) 2007-05-04 2010-08-17 Electrolux Home Products, Inc. Height adjustment mechanism for a dishwasher rack and associated method
KR101309377B1 (ko) 2007-07-13 2013-09-17 주식회사 동양매직 식기세척기용 수납바구니의 높이조절장치
CN104905570A (zh) * 2015-05-29 2015-09-16 长兴晨怡电子器材有限公司 双层碗碟架
WO2018177551A1 (en) 2017-03-31 2018-10-04 Electrolux Appliances Aktiebolag Bracket, rack, and dishwasher
CN107366679A (zh) * 2017-07-25 2017-11-21 安徽省唐骏重工机械有限责任公司 一种农机用新型可调节滑轮装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3809450A (en) * 1971-12-27 1974-05-07 Gen Electric Rack level adjustment system in a dishwasher
EP0033483B1 (de) * 1980-02-05 1983-02-16 Bauknecht Hausgeräte GmbH Vorrichtung zum Verstellen der Höhenlage eines Geschirrkorbes in einem Haushalt-Geschirrspüler
IT235034Y1 (it) * 1994-07-15 2000-03-31 Zanussi Elettrodomestici Lavastoviglie con cesto regolabile in altezza
DE19512128C5 (de) * 1995-04-04 2005-05-12 Miele & Cie. Kg Vorrichtung zum Verstellen der Höhenlage des Geschirrkorbes einer Geschirrspülmaschine

Also Published As

Publication number Publication date
IT1312283B1 (it) 2002-04-10
DE60013952T2 (de) 2005-10-06
DE60013952D1 (de) 2004-10-28
ITMI990939A1 (it) 2000-11-03
EP1051944A1 (en) 2000-11-15

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