EP1982633B1 - Lave-vaisselle à bâti monté sur rails et chaînes à rouleaux correspondantes - Google Patents

Lave-vaisselle à bâti monté sur rails et chaînes à rouleaux correspondantes Download PDF

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Publication number
EP1982633B1
EP1982633B1 EP07106214A EP07106214A EP1982633B1 EP 1982633 B1 EP1982633 B1 EP 1982633B1 EP 07106214 A EP07106214 A EP 07106214A EP 07106214 A EP07106214 A EP 07106214A EP 1982633 B1 EP1982633 B1 EP 1982633B1
Authority
EP
European Patent Office
Prior art keywords
rack
chains
rails
roller
washing chamber
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.)
Not-in-force
Application number
EP07106214A
Other languages
German (de)
English (en)
Other versions
EP1982633A1 (fr
Inventor
Michal Dabal
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.)
Whirlpool Corp
Original Assignee
Whirlpool Corp
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 Whirlpool Corp filed Critical Whirlpool Corp
Priority to AT07106214T priority Critical patent/ATE489886T1/de
Priority to DE602007010902T priority patent/DE602007010902D1/de
Priority to PL07106214T priority patent/PL1982633T3/pl
Priority to ES07106214T priority patent/ES2353554T3/es
Priority to EP07106214A priority patent/EP1982633B1/fr
Publication of EP1982633A1 publication Critical patent/EP1982633A1/fr
Application granted granted Critical
Publication of EP1982633B1 publication Critical patent/EP1982633B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A47L15/507—Arrangements for extracting racks, e.g. roller supports
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2210/00—General construction of drawers, guides and guide devices
    • A47B2210/17—Drawers used in connection with household appliances

Definitions

  • the present invention relates to a dishwasher with a rack mounted on rails and roller chains associated thereto. More particularly, the invention relates to a dishwasher with a rack slidably mounted on rails and roller chains that bend on the flanks of the rack.
  • a typical dishwasher comprises a washing chamber provided with an upper and a lower rack for holding items to be cleaned.
  • the washing chamber is typically accessible through a door, and the upper rack is typically mounted on a pair of rails to pull the rack out of the washing chamber and load it with the items to be cleaned, or unload it after cleaning.
  • the rails are movably mounted to opposed walls of the washing chamber, and the racks include wheels that ride on the rails.
  • EP 1 552 781 A2 discloses a dishwasher comprising a pair of rails that support a sliding rack for holding items to be cleaned.
  • the rails comprise a plurality of U-shaped elements sliding telescopically into each other, the end elements being fixed to the walls of the washing chamber and to the rack, respectively.
  • the elements forming the rails are provided with holes, to allow circulation of water and avoid deposition of solids within the cavity of the U-shaped elements.
  • a structure of rails formed by elements sliding telescopically into each other does not ensure optimum stability and perfect alignment during extension, particularly at a full load condition.
  • the U-shape of the sliding elements is critical with respect to possible deposit of solid particles released by the items to be cleaned.
  • SU 1 329 767 A1 discloses a dishwasher rack of adjustable length, comprising an upper and a lower spring holding dishes to be washed, and side walls represented by roller chains with end portions sliding within channels formed in end walls having the function also of handles.
  • the rack is designed to be removed from the dishwasher to load/unload the items to be cleaned.
  • the roller chains allow to adjust the length of the rack but do not function as support of the rack.
  • the structure of the rack is rather complex and does not ensure that the items to be cleaned are safely held on the rack during operation.
  • a disadvantage of this dishwasher is that a series of manual actions are required to load/unload the rack with the items to be cleaned, including hooking/releasing the upper and lower springs and pulling/pushing the roller chains in and out the channels of the end walls.
  • customers require dishwashers reliable with respect to holding the items firmly on the rack, and easy to operate.
  • a dishwasher comprising a washing chamber and a rack slidably mounted on a pair of rails in the washing chamber, characterized by comprising a pair of roller chains connected to said rails to form substantially rigid longitudinal extensions that support said rack during sliding in and out said washing chamber; and further characterized by:
  • said rollers of said chains comprise bevelled upper portions allowing upward bending of said chains into said washing chamber.
  • roller chains of said dishwasher are bent upwards within said housings according to a substantially circular path.
  • said substantially circular path is defined by a substantially circular groove formed in said housings, said groove having a length sufficient to accomodate said roller chain entirely.
  • said rollers of said roller chains are hinged through pins with axis perpendicular to the longitudinal axis of said rails, and comprise a front portion with a bottom wall against which the rear portion of an adjacent roller abuts, so that rotation is limited and downward bending of the chain is prevented, thereby ensuring alignment of said chains to said rails during sliding of said rack in and out said washing chamber.
  • a household dishwasher 10 is schematically represented without front door and with side walls 14,14' partially removed.
  • Dishwasher 10 comprises a washing chamber 12 and a rack 16 slidably mounted on rails 18,18'.
  • Rack 16 is designed to hold dishes and other kitchen items to be cleaned, as known in the field.
  • Rails 18,18' are fixed to side walls 14,14' of washing chamber 12.
  • Fig. 1 shows rack 16 within washing chamber 12, typically corresponding to a state of door closed.
  • Fig. 2 shows rack 16 pulled out from washing chamber 12, typically corresponding to a state of door open when loading/unloading the rack.
  • Rack 16 is slidably mounted on rails 18,18a by means of wheels 19 projecting from supports 20,20' fixed to the flanks of rack 16, as better shown in Figures 3-6 .
  • wheels 19 comprise a pair of upper wheels and a pair of lower wheels, to allow a stable and smooth sliding movement of rack 16 on rails 18,18'.
  • a pair of roller chains 22, 22' is connected to rails 18,18', to form substantially rigid longitudinal extensions that support rack 18,18' during sliding movement in and out washing chamber 12.
  • Each roller chain 22, 22' consists of a series of roller 24, better shown in Figures 6-8 , hinged to each other through pins 26 with axis X perpendicular to the longitudinal axis of rails 18, 18'.
  • Each roller is hinged to adjacent rollers by means of two pins, one located in a front portion 23 and the other located in a rear portion 25.
  • Front portion 23 is formed with a central recess 28 suitable to receive the rear portion 25 of an adjacent roller, so that a pin 26 is inserted into corresponding holes of the front portion 23 and of the associated rear portion of an adjacent roller to rotatably connect the two adjacent rollers. Rotation of two adjacent rollers, however, is limited to a direction above an horizontal plane in which rails 18, 18' lay.
  • each roller 24 has a bottom wall 29, against which the rear portion of an adjacent roller abuts, so that rotation in a direction below an horizontal plane in which rails 18, 18' lay is prevented.
  • Such structure of roller 24 prevents a downward bending of roller chains 22, 22', thereby ensuring that chains 22, 22' are rigidly aligned to rails 18, 18' during sliding of rack 16 in and out washing chamber 12.
  • the upper portion 30 of front portion 23 of each roller 24 is bevelled, so that upward bending of roller chains 22, 22' is possible.
  • housings 32, 32' are rigidly connected to supports 20,20' fixed to the flanks of rack 16.
  • Supports 20, 20' and housing 32, 32' are preferably made of a single piece, as shown in Fig. 6 with reference to support 20 and housing 32 for chain 22.
  • Such piece includes also shafts such as 34 on which wheels 19 are mounted.
  • roller chains 22, 22' bend within housings 32, 32' according to a substantially circular path, so that any entanglement or blocking of the motion of the chains caused by a too narrow bend of rollers 24 is prevented. Also, bending of the chains according to a substantially circular path reduces the space required to store the chain in the bent state.
  • a bending according to a substantially circular path is achieved by providing a substantially circular groove such as 36 in housings 32, 32'.
  • groove 36 has a length sufficient to accomodate roller chains 22, 22' for their entire length, corresponding to a state of the rack fully pushed into washing chamber 12, for instance during washing operation.
  • roller chains 22, 22' are capable to be in a fully extended position, as shown by Figure 2 and 5 , and in a fully bent position, as shown by Figure 1 and 3 , and in all intermediate positions in-between, as shown for example in Figure 4 .
  • roller chains 22, 22' are aligned with rails 18, 18', to form substantially rigid longitudinal extensions of rails 18, 18' that support rack 16 during sliding in and out washing chamber 12.
  • the height of rollers 24 is the same as the height of rails 18, 18', so that there is no discontinuity in the line of ride of wheels 19 on the passage from rails to chains, thereby a smooth support to wheels 19 is provided.
  • Side skid and downward bending of the chains are prevented by the structure and mutual connection of rollers 24.
  • Side skid is prevented by the coupling of rear portions 25 into recess 28 of front part 23, which allow rotation about X axis only. Bending downwards is prevented by bottom wall 29 of front part 23, as described above.
  • each chain 22, 22' is forced to bend by engaging circular groove 36, as shown in Fig. 4 . Bending upwards is eased by the bevelled upper portion 30 of rollers 24. In the fully bent state of Fig. 3 , chain 22 occupies almost entirely groove 36, in which it is stored typically when the door of the washing chamber is closed.
  • roller chains 22, 22' are preferably made of a synthetic resin, for example by moulding each component with a suitable plastic material. This allows to combine the desired mechanical properties with optimum resistance to wet environment and/or chemical corrosion that could be caused by cleaning agents and additives used during operation of the dishwasher.
  • support 20 and housing 32 can be produced in one piece of suitable plastic material, preferably by injection moulding.
  • Each rail 18, 18' can be produced in a single piece of suitable plastic material, instead of conventional steel rails, and can be fixed directly to the walls of washing chamber 12, ensuring also a better stability.

Landscapes

  • Washing And Drying Of Tableware (AREA)

Claims (10)

  1. Lave-vaisselle (10) comprenant une chambre de lavage (12) et un panier (16) monté de manière coulissante sur une paire de rails (18, 18') dans la chambre de lavage, caractérisé en ce qu'il comprend une paire de chaînes à rouleaux (22, 22') reliées auxdits rails (18, 18') pour former des extensions longitudinales sensiblement rigides qui supportent ledit panier (16) pendant le coulissement dans et hors de ladite chambre de lavage (12) ; et
    lesdits rouleaux (24) desdites chaînes à rouleaux (22, 22') comprenant des parties inférieures (29) empêchant la courbure vers le bas desdites chaînes (22, 22') ; et
    ledit panier (16) comprenant des logements (32, 32') sur les flancs de celui-ci pour accueillir lesdites chaînes à rouleaux (22, 22') dans l'état courbé.
  2. Lave-vaisselle selon la revendication 1, caractérisé en ce que lesdits rouleaux (24) desdites chaînes à rouleaux (22, 22') comprennent des parties supérieures chanfreinées (30) permettant la courbure vers le haut desdites chaînes dans lesdits logements (32, 32').
  3. Lave-vaisselle selon la revendication 1, caractérisé en ce que lesdites chaînes à rouleaux (22, 22') sont courbées dans lesdits logements (32, 32') selon un chemin sensiblement circulaire.
  4. Lave-vaisselle selon la revendication 3, caractérisé en ce que ledit chemin sensiblement circulaire est défini par une rainure (36) sensiblement circulaire formée dans lesdits logements (32, 32'), ladite rainure (36) ayant une longueur suffisante pour accueillir lesdites chaînes à rouleaux (22, 22') entièrement.
  5. Lave-vaisselle selon la revendication 1, caractérisé en ce que lesdits rouleaux (24) desdites chaînes à rouleaux (22, 22') sont articulés autour d'axes (26) avec l'axe (X) perpendiculaire à l'axe longitudinal desdits rails (18, 18'), et comprennent des parties inférieures (29) limitant la rotation pour empêcher la courbure vers le bas des chaînes, assurant ainsi l'alignement desdites chaînes (22, 22') sur lesdits rails (18, 18') pendant le coulissement dudit panier (16) dans et hors de ladite chambre de lavage (12).
  6. Lave-vaisselle selon la revendication 5, caractérisé en ce que lesdites parties inférieures (29) desdits rouleaux (24) limitant la rotation comprennent une paroi inférieure formée dans la partie avant (23) de chaque dit rouleau (24) contre laquelle la partie arrière (25) d'un rouleau adjacent vient buter, de telle manière que la courbure vers le bas de la chaîne est empêchée, assurant ainsi l'alignement desdites chaînes (22, 22') sur lesdits rails (18, 18') pendant le coulissement dudit panier (16) dans et hors de ladite chambre de lavage (12).
  7. Lave-vaisselle selon la revendication 1, caractérisé en ce que lesdits logements (32, 32') pour lesdites chaînes à rouleaux (22, 22') sont reliés de manière rigide à des supports (20, 20') fixés sur les flancs dudit panier (16).
  8. Lave-vaisselle selon la revendication 7, caractérisé en ce que lesdits supports (20, 20') et lesdits logements (32, 32') sont faits d'une seul pièce.
  9. Lave-vaisselle selon la revendication 1, caractérisé en ce que lesdits supports (20, 20') et lesdits logements (32, 32') sont faits d'une seul pièce en matière plastique.
  10. Lave-vaisselle selon la revendication 9, caractérisé en ce qu'une telle seule pièce de matière plastique inclut aussi des axes (34) sur lesquelles des roues (19) sont montées pour un mouvement de coulissement dudit panier (16) sur ladite paire de rails (18, 18').
EP07106214A 2007-04-16 2007-04-16 Lave-vaisselle à bâti monté sur rails et chaînes à rouleaux correspondantes Not-in-force EP1982633B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT07106214T ATE489886T1 (de) 2007-04-16 2007-04-16 Geschirrspülmaschine mit auf schienen montiertem gestell und dazugehörigen rollenketten
DE602007010902T DE602007010902D1 (de) 2007-04-16 2007-04-16 Geschirrspülmaschine mit auf Schienen montiertem Gestell und dazugehörigen Rollenketten
PL07106214T PL1982633T3 (pl) 2007-04-16 2007-04-16 Zmywarka do naczyń z koszykiem osadzonym na szynach i powiązanymi z nimi łańcuchami rolkowymi
ES07106214T ES2353554T3 (es) 2007-04-16 2007-04-16 Lavaplatos con un bastidor montado sobre carriles y cadenas de rodillos asociadas con el mismo.
EP07106214A EP1982633B1 (fr) 2007-04-16 2007-04-16 Lave-vaisselle à bâti monté sur rails et chaînes à rouleaux correspondantes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07106214A EP1982633B1 (fr) 2007-04-16 2007-04-16 Lave-vaisselle à bâti monté sur rails et chaînes à rouleaux correspondantes

Publications (2)

Publication Number Publication Date
EP1982633A1 EP1982633A1 (fr) 2008-10-22
EP1982633B1 true EP1982633B1 (fr) 2010-12-01

Family

ID=38512485

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07106214A Not-in-force EP1982633B1 (fr) 2007-04-16 2007-04-16 Lave-vaisselle à bâti monté sur rails et chaînes à rouleaux correspondantes

Country Status (5)

Country Link
EP (1) EP1982633B1 (fr)
AT (1) ATE489886T1 (fr)
DE (1) DE602007010902D1 (fr)
ES (1) ES2353554T3 (fr)
PL (1) PL1982633T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9357899B2 (en) 2012-10-23 2016-06-07 Whirlpool Corporation Dishwasher support structures

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020130186A1 (de) * 2020-11-16 2022-05-19 Paul Hettich Gmbh & Co. Kg Haushaltsgerät mit einem Lagerbehälter

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1329767A1 (ru) * 1985-02-19 1987-08-15 С. И. Каиуиникои Кассета дл мыть ,сушки и хранени посуды
JP3542758B2 (ja) * 2000-03-14 2004-07-14 株式会社栗本鐵工所 リンクチェーンの巻取り・繰出し装置
US20040244825A1 (en) * 2003-06-06 2004-12-09 Ashton Robert H. Dishwasher with drawer lifting mechanism
DE10346861B4 (de) * 2003-10-09 2015-03-05 Stg-Beikirch Industrieelektronik + Sicherheitstechnik Gmbh & Co. Kg Ausstellvorrichtung
DE102004001402A1 (de) * 2004-01-09 2005-08-04 Schock Metallwerk Gmbh Vorrichtung mit einer von einem Fluid durchströmbaren Kammer und Verwendung einer Auszugsführung in einer solchen Vorrichtung
DE202006000711U1 (de) * 2006-01-18 2006-04-06 Anton Schneider Gmbh & Co Kg Differentialauszug für Schubladen o.dgl.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9357899B2 (en) 2012-10-23 2016-06-07 Whirlpool Corporation Dishwasher support structures

Also Published As

Publication number Publication date
DE602007010902D1 (de) 2011-01-13
ATE489886T1 (de) 2010-12-15
ES2353554T3 (es) 2011-03-03
PL1982633T3 (pl) 2011-05-31
EP1982633A1 (fr) 2008-10-22

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