EP2026013A1 - Haushaltsgerät mit ausziehbarem Backwagen und zugunterstützendem Mechanismus - Google Patents

Haushaltsgerät mit ausziehbarem Backwagen und zugunterstützendem Mechanismus Download PDF

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Publication number
EP2026013A1
EP2026013A1 EP07016146A EP07016146A EP2026013A1 EP 2026013 A1 EP2026013 A1 EP 2026013A1 EP 07016146 A EP07016146 A EP 07016146A EP 07016146 A EP07016146 A EP 07016146A EP 2026013 A1 EP2026013 A1 EP 2026013A1
Authority
EP
European Patent Office
Prior art keywords
carriage
catch
traction
domestic appliance
door
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.)
Withdrawn
Application number
EP07016146A
Other languages
English (en)
French (fr)
Inventor
Behnam Mirshekari
Bernd Heisswolf
Dietmar Hildner
Klaus Wälzlein
Harald Pörner
Erhard Koitzsch
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.)
Electrolux Home Products Corp NV
Original Assignee
Electrolux Home Products Corp NV
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 Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to EP07016146A priority Critical patent/EP2026013A1/de
Publication of EP2026013A1 publication Critical patent/EP2026013A1/de
Withdrawn legal-status Critical Current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
    • A47L15/0084—Washing or rinsing machines for crockery or tableware of drawer-type
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C19/00—Other devices specially designed for securing wings, e.g. with suction cups
    • E05C19/02—Automatic catches, i.e. released by pull or pressure on the wing
    • E05C19/024—Automatic catches, i.e. released by pull or pressure on the wing with a bifurcated latch
    • 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
    • F24C15/16—Shelves, racks or trays inside ovens; Supports therefor
    • F24C15/162—Co-operating with a door, e.g. operated by the door
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/0025—Devices for forcing the wing firmly against its seat or to initiate the opening of the wing
    • E05B17/0033—Devices for forcing the wing firmly against its seat or to initiate the opening of the wing for opening only
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/04—Spring arrangements in locks
    • E05B2015/0493—Overcenter springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers
    • F25D23/021—Sliding doors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D25/00—Charging, supporting, and discharging the articles to be cooled
    • F25D25/02—Charging, supporting, and discharging the articles to be cooled by shelves
    • F25D25/024—Slidable shelves
    • F25D25/025—Drawers

Definitions

  • the present invention relates to a domestic or household appliance, such as for example, but hot exclusively, a baking or cooking oven, a refrigerator or a dishwasher, comprising a front-opened compartment within a housing, comprising also a pull-out door carriage, slidable in opposite direction into and out of the housing into a fully inserted rear or an extracted front position, and a traction-assisting mechanism that assists the movement of the carriage to the front or rear position.
  • a domestic or household appliance such as for example, but hot exclusively, a baking or cooking oven, a refrigerator or a dishwasher
  • a front-opened compartment within a housing comprising also a pull-out door carriage, slidable in opposite direction into and out of the housing into a fully inserted rear or an extracted front position, and a traction-assisting mechanism that assists the movement of the carriage to the front or rear position.
  • Domestic appliances comprise a front-opened compartment within a housing, the compartment being, equipped with trays for food or other goods and being closeable by a front door. It is desired to keep such front doors completely closed under operation. Otherwise unpleasant odors and/or waste of energy may occur.
  • pull-out door carriages typically comprise a frame, a bottom plate, a door and also trays for food, they are relatively heavy, and many expedient technical solutions have been proposed to facilitate their use.
  • pull-out guide assemblies may be provided on each of the opposite sides of the carriage, designed to ensure that the movement of the carriage into and out of the housing will be easy and as smooth as possible.
  • conventional guide assemblies still have a problem in that force must be continuously applied to the drawer until the drawer is completely closed.
  • the pull-out carriage sometimes will not stay in its fully closed rear position, i.e. fully inserted into the housing. Such situation may occur when the carriage.has been pushed into the housing without care or not to the full extent.
  • a domestic appliance particularly baking oven
  • a carriage and a door as well as a spring device, which carriage can be moved out and run back driven by the force of the spring device.
  • the oven door is held closed by the force of the spring device.
  • an actuating unit has to operated to reduce the spring device in power.
  • a domestic appliance having components including a housing, enclosing a front-opened compartment, and a pull-out door carriage, comprising a door for opening and closing the front opening of the compartment, slidable in opposite directions along a traction direction into and out of said housing to an inserted rear position or an extracted front position, preferably said components comprising pairs of first and second mutual opposing horizontal faces of a carriage part and a housing part.
  • the appliance comprises also a traction-assisting mechanism comprising a tilting member, comprising a preferably plate-shaped horizontal, catch body with at least one catch recess, preferably being mounted on a first of said horizontal faces, which tilting member is pivotable about a vertical pivoting or pivotal axis, and a vertical pin member, preferably fixedly mounted on a second of said horizontal faces, being adapted to engage into the catch recess of the catch body.
  • a tilting member comprising a preferably plate-shaped horizontal, catch body with at least one catch recess, preferably being mounted on a first of said horizontal faces, which tilting member is pivotable about a vertical pivoting or pivotal axis, and a vertical pin member, preferably fixedly mounted on a second of said horizontal faces, being adapted to engage into the catch recess of the catch body.
  • the traction-assisting mechanism of the kind described here is of greatest structural simplicity and can be easily mounted, has a small overall volume and nevertheless is highly reliable in operation.
  • a resilient member in particular spring member, for acting on said tilting member for tilting displacement relative to the traction direction is provided. It particularly serves to cushion a pull-out door carriage to be inserted during the last insertion stage and to hold the carriage in a front end or rear end position such that it can only be moved by overcoming the resilient force of the spring-loaded tilting member, albeit small.
  • the horizontal arrangement according to the invention allows for ample leverage of the tilting member. Thereby it is possible to provide that the carriage is subjected to a pull-in/pull-out movement over a substantial distance and such distance may be readily adjusted and/ or selected. Furthermore, the movement of the carriage will be substantially uniform.
  • An domestic or household appliance comprises various components including inter alia a stationary housing (1) having formed therein a front-opened compartment (3) and a movable pull-out door carriage (6).
  • Fig. 1 schematically illustrates a baking oven of this type.
  • the baking oven has a heat-insulating housing (1), in which is provided a casing (2), enclosing a baking compartment (3).
  • the casing (2) is formed by a cover wall, a bottom wall, lateral walls and a rear wall. Typically within the region of the cover and the bottom wall heating elements are arranged.
  • the baking compartment is accessible via a front opening that is closable by a door (4).
  • Said door (4) is attached to a pull-out door carriage structure, designed in a known way.
  • the carriage of the embodiment illustrated in Fig. 2 to 4 comprises a bottom plate (61), supported by a frame having flanges at its ends. These flanges carry stub axles for rollers able to run freely within guide rails of the partition. Also an adjustable food rack with trays (7) for receiving the food to the cooked is attached to the door.
  • the front door (4) of the oven is linked to the carriage in a fixed angle, so that movement of the carriage in a forward direction will result in opening the front door (4).
  • the front door (4) can be mounted.to the carriage in a hinged arrangement so that a movement of the carriage in a forward direction will result in opening the front door (4) and a correspondingly pivotal movement of the front door (4) in a door opening direction will result in a forward movement of the carriage including the food rack.
  • the pull-out door carriage (6) is adapted to be slidable in opposite traction directions into or out of the housing to a fully inserted rear or an extracted front position relative to said housing.
  • the carriage adapted to be moved within a separate partition (5) of the housing (1).
  • Such sliding movement is enabled by conventional means, for example guide assemblies mounted on each side of the carriage and including supporting rails mounted inside the compartment (3) or in a separate partition (5) below the compartment and a pull-out rail mounted on the carriage.
  • Various rollers and /or balls may be provided between the rails to facilitate smooth movement of the carriage and providing the function of bearing the load of the carriage.
  • the pullout door carriage (6) and the housing (1) comprises pairs of mutually opposing horizontal faces.
  • Such pairs comprise at least one movable face, such as a downward face of a frame or a bottom plate (61) of the carriage, that is opposed to a stationary face of the housing (1), such as an upward face of floor plate of the housing (1), of a separate partition (5) or of the compartment.
  • the household appliance comprises a traction-assisting mechanism (8) that operates to ensure that the pull-out door carriage (6) is moved backward to a fully inserted closed rear position and forward to a fully or partially opened front position.
  • the tilting member (82) comprises a plateshaped horizontal catch body, mounted on a first of said pairs of horizontal faces on a first component.
  • the catch body is mounted on the upward horizontal face of a floor plate (51) of a partition (5).
  • the catch body is mounted pivotable around a pivotal axis (83) that extend vertically.
  • Said catch body comprises a catch (84), preferably an openended catch (84) such as slot or notch, for engaging a pin member (81) projecting from the second component.
  • the catch body is a circular catch body with a single catch recess (84).
  • the catch body may comprise a plurality of catches in the periphery of a circular body.
  • the catch recess (84) is an elongate slot.
  • the slot is arranged radially and has an open-mouthed reces.s.
  • such catch slot is arranged in a fork-type extension of a circular catch body as shown in,the illustrated embodiments.
  • Said fork-type extension defines a slot with side edges and an inner stop near the pivotal axis (83) of the tilting member (82).
  • the pivotable catch body is formed with a catch recess (84), configured to be closely engageable with a pin member (81).
  • the catch recess (84) is an elongated slot
  • the catch recess to receive the pin is preferably formed having a width slightly larger than the diameter of the pin, so as to provide a certain amount of clearance between the pin and the vertical edges defining the slot.
  • Said pin member is mounted on a second of said pairs of opposing horizontal faces on a second component of the appliance.
  • the pin member (81) is fastened to the frame of the pull-out door carriage (6) and extends vertically downwardly from the carriage.
  • the pin member (81) is preferably a rounded pin, a rotatable stud or a lug. According to one embodiment, the pin member is formed as a lug from the bottom plate (61) of the carriage.
  • it may be a separate member fastened to the carriage.
  • the tilting member (82) is spring-loaded by a spring member, for acting on said tilting member (82) for tilting displacement relative to the traction direction.
  • the spring member preferably is a helical coil spring, a gas piston or a solenoid.
  • the spring member (85) is arranged such that it is first expanded upon movement of the catch (84) in a rearward and frontward direction and that than retracts to impart an urging force'to the tilting member (82).
  • the spring has a first end fixed to an anchor point (851) on the same component as the pivotal axis (83) of the tilting member.
  • the second end of the spring is fastened to the tilting member by a fastener (852).
  • the second end maybe fastened within a circle area around the pivotal axis (83), within the radius of the inner stop of the slot, and in line with the slot axis or nearer to the anchor point (851) of attachment.
  • Further spring properties can be selected in view of desired comfort, weight of door and distance to be covered, to ensure slow and gentle closing and opening of the door to the end of the travel.
  • the resilient force is selected strong enough to hold the carriage and the door fixed to it in a closed position, but weak enough to permit the door to be readily opened manually against the spring force.
  • the-position of axis of the tilting member (82) and the corresponding position of the pin member should be displaced laterally relative to the traction direction.
  • the pin member (81) is mounted at a lateral distance from the pivotal axis (83) of the tilting member (82), relative to the direction of traction A-A, resp. C-C.
  • the magnitude of the pull-in movement is dependent on the distance of the lever arm between the pivoting axis of the catch body and the pin member (81). It is apparent that the length of the lever arm depends essentially on the widths of the carriage and cannot be greater, i.e., although it is decidedly greater than in the known catch devices wherein the effective pull-in distance is limited.
  • the traction-assisting mechanism (8) comprises stoppers (9) to limit the pivotal movement of the tilting member (82).
  • the stoppers (9) hold the tilting member (82) in a forward rest position, wherein the catch (84) is inclined to the direction of traction.
  • unintentional displacement of the pin member (81) in an extracted position is prevented.
  • the front end rest position of the tilting member (82) is preferably characterized by a tilting angle of the axis of the catch relative to the direction of traction.
  • the angle between the axis of the catch and the traction direction may preferably range between 5 to 75 degree.
  • a preferred angle is between 5 to 20 degree.
  • a wider angle may help to reduce the amount of force necessary to move the catch (84) over the breakover position.
  • the tilting member is configured to retain the pin in the rearward position and to release the pin in a front position.
  • the pin is retained in an end position when the fork-type extension of the catch body is sufficiently large to be stopped by the rear wall of the compartment.
  • the backward pivotal movement may be stopped by stoppers (9') to keep the catch (84) inclined to the direction of traction on the rearward position and the pin member (81) engaged in the catch (84).
  • arcuate protrusions (10, 10') that guide the catch body along its the pivotal movement may be provided.
  • Such means may comprise noses (62, 62') attached to the carriage and corresponding vertical studs (11, 11') attached to the floor plate (51) of the partition (5) or the housing.
  • the pin member (81) is mounted on the bottom plate (61) of the carriage and the tilting member (82) is mounted on the floor plate of the housing. It is however possible in accordance with the present invention to reverse this arrangement. In other word, it is possible for the pin member (81) to be mounted on the housing body and for the tilting member (82) to be mounted on the carriage.
  • the traction-assisting mechanism (8) can be installed on both sides of the appliance or in the middle section of it. Two mirror-inverted arrangement may be arranged on both sides of the appliance. This may prevent too large a force from acting at the start of the traction motion and also prevent the motion from being jerky.
  • the pivotal axis (83) of the tilting member (82) is mounted on the midline of the appliance.
  • the pin member (81) may be mounted midline of the appliance, particularly if mounted to the carriage, to reduce lateral displacement of the carriage.
  • the pull-out door carriage (6) is schematically illustrated in a front position, a rear position and in a breakover position at a turning point of the tractionassisting mechanism (8).
  • Fig. 2 illustrates the position, at which the baking oven is open and the pull-out door carriage (6) in a frontward position, the tilting member (82) being in a rest position characterized in that the spring member (85) is in a neutral rest position.
  • the axis of the catch (84) is inclined to the traction direction and the mouth of the catch faces the pin member (81).
  • the pin member (81) is withdrawn from the catch (84) and thereby releases engagement between the pin member (81) and the tilting member (82). From this position the carriage 6 can as a whole be moved out of the housing, can be separated from the baking oven and can be interchanged against an other carriage.
  • the pin member (81) moves in traction direction, then slides into the catch (84) and the trailing surface of the pin member (81) acts on the trailing side edge of the catch (84).
  • the axis of the catch (84) is offset with regard to the axis of traction, a tilting moment about the axis of the catch body is imparted to the tilting member (82), i.e. in a counter-clockwise direction.
  • the fastener (852) of the spring member (85) moves in a pivoting movement around the pivotal axis-(83) of the catch body and the spring member (85) is expanded.
  • the traction -assisting mechanism works in the opposite way, when the pull-out carriage is pulled out.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Refrigerator Housings (AREA)
EP07016146A 2007-08-17 2007-08-17 Haushaltsgerät mit ausziehbarem Backwagen und zugunterstützendem Mechanismus Withdrawn EP2026013A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07016146A EP2026013A1 (de) 2007-08-17 2007-08-17 Haushaltsgerät mit ausziehbarem Backwagen und zugunterstützendem Mechanismus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07016146A EP2026013A1 (de) 2007-08-17 2007-08-17 Haushaltsgerät mit ausziehbarem Backwagen und zugunterstützendem Mechanismus

Publications (1)

Publication Number Publication Date
EP2026013A1 true EP2026013A1 (de) 2009-02-18

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EP07016146A Withdrawn EP2026013A1 (de) 2007-08-17 2007-08-17 Haushaltsgerät mit ausziehbarem Backwagen und zugunterstützendem Mechanismus

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2093495A3 (de) * 2008-02-22 2014-04-02 BSH Bosch und Siemens Hausgeräte GmbH Türführungsvorrichtung für Hausgerät

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1262533B (de) 1959-11-05 1968-03-07 Oskar Merz Meyer Haltevorrichtung an Auszugschienen fuer Schubladen
GB1117071A (en) 1966-02-21 1968-06-12 G K N Sankey Proprietary Ltd Improvements in or relating to drawers and cabinet assemblies
EP1258685A1 (de) 2001-05-18 2002-11-20 BSH Bosch und Siemens Hausgeräte GmbH Haushaltsgerät, insbesondere Backofen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1262533B (de) 1959-11-05 1968-03-07 Oskar Merz Meyer Haltevorrichtung an Auszugschienen fuer Schubladen
GB1117071A (en) 1966-02-21 1968-06-12 G K N Sankey Proprietary Ltd Improvements in or relating to drawers and cabinet assemblies
EP1258685A1 (de) 2001-05-18 2002-11-20 BSH Bosch und Siemens Hausgeräte GmbH Haushaltsgerät, insbesondere Backofen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2093495A3 (de) * 2008-02-22 2014-04-02 BSH Bosch und Siemens Hausgeräte GmbH Türführungsvorrichtung für Hausgerät

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