EP2532973B1 - Appareil Domestique - Google Patents

Appareil Domestique Download PDF

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Publication number
EP2532973B1
EP2532973B1 EP11004646.3A EP11004646A EP2532973B1 EP 2532973 B1 EP2532973 B1 EP 2532973B1 EP 11004646 A EP11004646 A EP 11004646A EP 2532973 B1 EP2532973 B1 EP 2532973B1
Authority
EP
European Patent Office
Prior art keywords
latching
door
door latch
household appliance
section
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.)
Active
Application number
EP11004646.3A
Other languages
German (de)
English (en)
Other versions
EP2532973A1 (fr
Inventor
Christina Löwe
Dietmar Hildner
Stefan Dänzer
Branko Ivanovic
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
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Filing date
Publication date
Application filed by Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to EP11004646.3A priority Critical patent/EP2532973B1/fr
Publication of EP2532973A1 publication Critical patent/EP2532973A1/fr
Application granted granted Critical
Publication of EP2532973B1 publication Critical patent/EP2532973B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F24C15/022—Latches
    • 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
    • E05C19/06—Other devices specially designed for securing wings, e.g. with suction cups in which the securing part if formed or carried by a spring and moves only by distortion of the spring, e.g. snaps

Definitions

  • the invention is directed to a household appliance comprising a door latch.
  • Door latches in connection with household appliances are often required to disable unauthorized access to treatment chambers such as baking muffles of baking ovens, washing chambers of dishwashers and the like.
  • a door latch for latching the front door of an electronic oven is known for example from DE 81 37 942 U1 showing a double L-shaped bent sheet metal elastic strip with a hook for engaging a latching edge of the door.
  • a further latch specifically provided for a door of a dishwasher, is known from DE 10 2006 007 328 A1 .
  • the known latch comprises a fixing portion, a latching portion in a middle section and a control lever extending from the middle section.
  • the control lever is shifted and offset, with respect to the overall lengthwise direction of the latch, from the fixing portion and from the latching portion.
  • Document DE 81 37 042 U1 discloses a latch for a door of a baking oven.
  • the latch comprises a strip-like base body with a double-L-shape structure. One end of the base body forms a fixing portion and an averted end of the base body forms a latching portion.
  • Document US 2 142 690 A describes a locking arrangement for windows, in which a locking element has several recesses for locking engagement into a counterpart locking element, and in which one end of the locking element has a bent section.
  • Document US 2,794,663 discloses a latch for gates or doors, which can be bolted, and, if desired, locked, by a simple shifting operation.
  • the known latch employs a flat latch bar which has a 90° twist at an intermediate point so as to provide a vertically disposed bolt section for engaging the catch and the bolt slot, and a horizontally disposed lever section adapted to swing vertically in a fulcrum plate, the lever section is provided with two notches for locating the latch bar in latching or bolting positions.
  • a household appliance comprising a front door and a door latch adapted to latch the door in a closed state is provided.
  • the door latch comprises a fixing portion adapted and designed for fixing the door latch to the appliance.
  • the door latch can for example be fixed to the appliance by one or more screws, by rivets, by welding and similar techniques.
  • detachable fixing techniques such as screws, are preferred in cases in which the door latch shall removably and/or temporarily be attached to the appliance.
  • the door latch further comprises a latching portion for latching engagement with the door of the appliance, the latching portion comprising a hook-shaped latching element.
  • the door latch is designed such that the fixing portion and latching portion are, with respect to the overall lengthwise direction of the door latch, twisted by about 90 degrees.
  • the twisted configuration contributes to enhanced mechanical strength and stiffness resulting in refined latching efficiency. Overstretching and decreasing resilience can at least be suppressed.
  • Twisted by about 90 degrees shall in particular mean, that planes defined by the latching portion and fixing portion, respectively, are twisted by 90 degrees, i.e. enclose an angle of about 90 degrees, or in other words are rotated, i.e. twisted, with respect to the overall lengthwise direction by about 90 degrees.
  • the latching portion and fixing portion are provided at opposite ends of the door latch.
  • the overall lengthwise direction is in particular given by a lengthwise or axial direction of an envelope of the door latch, enveloping the whole door latch, in particular the opposite ends of the door latch.
  • the door latch comprises a base body which at least comprises the fixing portion and the latching portion, the base body being made as a one-piece part bent sheet-type elastic body made from a flexible and elastic material such that:
  • the door latch comprises a hook type latching element, preferably fixed to the latching portion, in particular to a latching tab of the latching portion.
  • the tab may be a strap or tongue shaped section of the door latch, projecting therefrom. If the hook type latching element and latching tab are implemented as two parts, the latching element may have a slot into which the tab is or can be inserted. The dimension of the slot and tab may be adapted to one another such that the latching element is safely fixed to the tab.
  • the hook type latching element and/or tab can comprise snap or hook elements for snap- connecting the latching element and tab.
  • the latching element may be fixed by other means, such for example by adhesive and the like.
  • the latching element may be made from plastics, whereas other parts of the door latch may be made from metal, in particular stainless steel, light metals, spring steel and the like, coated metals, in particular enamel coated metals. All or single elements of the door latch may be coated, for example by a lacquer layer, and/or plated, for example with chrome and the like.
  • the latching tab projects parallel to the overall lengthwise direction from a, preferably strip shaped, intermediate section which is oriented transversally, in particular in an angle of 90 degrees, to the overall lengthwise direction.
  • the latching tab and intermediate section preferably enclose an angle of about 90 degrees.
  • the door latch in particular a base body of the door latch can be formed or bent from a single sheet metal strip. This allows easy and cheap manufacture of the door latch. Further, with a transversal intermediate section favorable mechanical strength and stability can be obtained, guaranteeing long-term efficient latching.
  • the intermediate section comprises a U-section, i.e.
  • the base body is made from metal, in particular metal alloys, and/or plastics. Such a base body can, as already mentioned, be formed as a single sheet metal strip. Such base bodies can be produced in a relative simple and cost efficient way, and the final assembly of the door latch can be greatly simplified.
  • the fixing portion has a planar s-type end section preferably having an oblong screw hole for fixing the door latch to the appliance.
  • S-type end section in particular shall mean that two sections in the end region of the door latch are offset from each other in a plane defined by the fixing portion itself, and are connected by a curved connector section.
  • the S-type end section therefore has an s-bend like geometry.
  • a wedge shaped element is attached to the latching tab, in combination making up or resulting in a latching tooth for latching engagement with the door.
  • the wedge shaped element can be made from plastics or other suitable materials, in particular by casting or other techniques. Further, the design of the wedge shaped element can be such that it can be snap- connected and/or locked to the latching tab.
  • the wedge shaped element and the tab, and therefore in particular the base body are interconnected or interlocked by respective connecting or locking elements.
  • the household appliance may be a baking oven.
  • the door latch may be mounted and fixed to the appliance and adapted to latch the door in a closed state at an upper or lateral edge of the door.
  • the door latch in particular the latching section, in particular the wedge shaped element, can engage a glass and/or decorative element, plate or cover of the door. It is also conceivable that the door latch, in particular the latching section, in particular the wedge shaped element engages a recess provided in the door.
  • the door latch is attached to a side-wall of the household appliance, and, in the closed state of the door, the latching portion at least partially projects from a front face of the appliance.
  • the latching portion preferably projects through a gap between a lower edge of an upper cover plate and an upper edge of the door.
  • the door latch can easily be mounted and removed from the appliance.
  • the U-shaped section preferably loosely, engages a respective vertical bar of the appliance.
  • the vertical bar may be a protrusion provided at the upper or lateral face side of the appliance, in particular of a casing of the appliance. Such an additional engagement improves latching efficiency and latching strength.
  • Fig. 1 shows a sectional view of a baking oven 1 with a door latch 2 mounted thereto.
  • the baking oven 1 which is just an example of a household appliance, will be described only in so far as is necessary for fully understanding the invention. Further, the figures are not necessarily true to scale and scales between figures may vary. Throughout the text, like reference signs are used for like elements.
  • the baking oven 1 comprises a casing 3, a baking chamber or muffle (not shown) and a front door 4 for closing a front opening of the baking chamber. With the situation in Fig. 1 , the door 4 is in a closed state. Above the door 4, an upper cover plate 5 is provided to which one or several control elements are mounted.
  • door latches 2 In connection with door latches 2 it is desirable that they have adequate latching efficiency and can be easily and flexibly attached and detached to the baking oven 1.
  • Fig. 1 it can be seen, and it will be described in more detail below, that the door 4 in its closed state is latched by the door latch 2. In this way, unauthorized opening of the door 4 can at least to some extent be blocked and access to the baking chamber can at least be handicapped.
  • the door latch 2 comprises a fixing portion 6 adapted and designed for fixing the door latch 2 to the baking oven 1.
  • the door latch 2 further comprises a latching portion 7 for latching the door 4.
  • the fixing portion 6 and latching portion 7 are, with respect to the overall lengthwise direction D or overall longitudinal axis D of the door latch 2, twisted by about 90 degrees.
  • a plane defined by the sheet-like fixing portion 6 and a plane defined by the latching portion 7 enclose an angle of about 90 degrees.
  • the twisted configuration of the door latch 2 on the one hand allows simple and flexible attachment to a side wall 8 of the baking oven 1 or casing 3, and on the other hand leads to enhanced operability, latching efficiency and latching strength.
  • the door latch 2 comprises a hook type latching element 9 which is plugged on a latching tab 10 of the door latch 2.
  • the latching element 9 therefore may have a slot having inner dimensions adapted to the outer dimensions of the latching tab 10 and configured such that the latching tab 10 can be fixedly plugged into the slot.
  • the latching element 9 can be secured to the latching tab 10 additionally by snap or latch elements engaging each other upon plugging the latching element 9 on the latching tab 10. Snap or latch elements may for example be provided within the slot and on the surface of the latching tab 10. As an alternative or in addition, it is possible to secure the latching element 10 on the latching tab 10 by adhesive.
  • the latching element 9 wedge shape is single sided, i. e. asymmetric with respect to the latching tab 10. More precisely, when mounted on the latching tab 10, one surface, in Fig. 2 the upper surface 11, of the latching element 9 is parallel to the latching tab 10 and the opposite surface, i.e. the lower surface 12, is slanted downwards. The lower surface 12 is slanted in such a way, that a step-like latching projection 13 is formed at the lower side of the door latch 2 in a transitional region between the latching element 9 and latching tab 10.
  • the step size of the latching projection 13 can easily be adjusted by appropriately shaping the latching element 9 or by plugging adequate latching elements 9 on the latching tab 10. In this way, a high degree of flexibility and efficient and adequate latching engagement with different types of doors can be obtained.
  • the latching tab 10 projects in overall lengthwise direction D from an intermediate section 14.
  • the intermediate section 14 comprises a U-section with two legs 15 and a base 16.
  • the U-section is oriented transversally to the overall lengthwise direction D, i. e. the base 16 is oriented parallel to the overall lengthwise direction D, the legs 15 are oriented essentially perpendicular to the overall lengthwise direction D and a section opening 17 is directed transversally to the overall lengthwise direction D.
  • the latching tab 10 and fixing portion 6 extend from a respective leg 15 in opposite directions in overall lengthwise direction D.
  • the latching tab 10 and the intermediate section 14, i. e. the respective leg 15, enclose an angle of about 90 degrees.
  • the fixing portion 6 and the intermediate section 14, i. e. the respective leg 15, enclose an angle of about 90 degrees.
  • an intersection line between the latching tab 10 and the respective leg 15 of the intermediate section 14 is oriented essentially horizontal. Due to the fact, that the latching tab 10 and fixing portion 6 are twisted by about 90 degrees an intersection line between the respective leg 15 of the intermediate section 14 and the fixing portion 6 is oriented essentially vertical. Note that the terms horizontal and vertical relate to the ordinary mounting position of the door latch 2, which in particular become obvious from Fig. 1 , and 3 to 5 .
  • the fixing portion 6 of the door latch 2 has an s-shaped end section 18. Further, the fixing portion 6 comprises an end tab 19 having an oblong screw hole 20.
  • the oblong screw hole 20 permits adjusting the mounting position of the door latch 2 parallel to the overall lengthwise direction D, in the present case in horizontal direction.
  • the s-shaped section 18 permits vertical offsets between screw hole 20 and latching tab 10. Such vertical offsets, essentially defined by adequate heights of the s-shaped end section 18, may be chosen to best fit respective mounting positions and latching functionality.
  • the door latch 2 in more details the base body of the door latch 2, can be formed from a single metal strip bended accordingly.
  • the metal strip can be made from stainless steel, standard steel and others. If required, suitable coating, plating and/or finishing can be applied to the base body, such as enamel coating, chrome plating and/or lacquers, respectively.
  • the base body is formed from plastics.
  • the latching element 9 is preferably made from plastics. In case that the base body is also made from plastics, the base body and latching element 9 can be manufactured as a one-piece part, via injection molding for example.
  • Fig. 3 shows an enlarged section of the baking oven 1, in more detail a region to which the door latch 2 is mounted to.
  • Fig. 4 shows an enlarged side view of the baking oven 1 in a region of the door latch 2.
  • Fig. 5 shows an enlarged front view of the baking oven 1 in a region of the door latch 2.
  • the fixing portion 6 is attached to the side wall 8 by a screw 21 passing through the screw hole 20.
  • the two-dimensional, i. e. areal, extent of the fixing portion 6 is parallel to the side wall 8.
  • the position of the door latch 2 can be adjusted in horizontal direction because the screw hole 20 is implemented as an oblong hole.
  • abutment edge 22 moves in horizontal direction of the door latch 2 from a horizontal abutment edge 22 provided on the side wall 8.
  • the abutment edge 22 also prevents the door latch 2 from rotating around screw 21.
  • an abutment edge 22 is not mandatory as anti-rotation properties can also be obtained by providing two screws and/or similar engagement elements.
  • Latching engagement between the door 4 and the door latch 2 is obtained in the present case in an upper section, more precisely an upper edge, of a front pane of the door 4.
  • the front pane may be a glass pane and/or any decorative pane mounted or applied to the door 4. Note that any other site of the door 4 can be used and selected for latching engagement.
  • the latching tab 10 passes through a gap 23 between an upper edge of the door 4 and a lower edge of the upper cover plate 5.
  • the gap is dimensioned such that upon pushing the latching element 9 and latching tab 10 fully upwards, i. e. until the section of the latching tab 10 running within the gap 23 abuts the lower edge of the cover plate 5, the upper edge of the door 4 can pass below the latching projection 13, and the door can be opened.
  • the latching projection 13 prevents the door 4 from passing by. In other words, if the door latch 2 is not deflected, the latching projection 13 prevents the door 4 from being opened in that an upper edge of the door 4 abuts the latching projection 13. Hence opening of the door can at least be handicapped.
  • the door latch 2, in particular the base body, is made from a flexible and elastic material.
  • the latching element 9 is held in latching position as long as no pushing force is applied to the latching portion. If a pushing force acting essentially perpendicular to the overall lengthwise direction and perpendicular to the upper surface 11 is applied to the latching portion 7, the latching portion 7 is elastically deflected. The latching portion 7 returns to the latching position again if the pushing force releases.
  • the door latch 2 is shown in Fig. 1 to 5 in the non-deflected configuration only. If deflected, at least the latching tab 10 of the door latch shall be bent. As can be seen from Fig. 3 and Fig.
  • additional stability and in particular high latching efficiency of the door latch 2 can be obtained.
  • a connection between single components of the door latch 2 and connection between the door latch 2 and the baking oven can be implemented in other or alternative ways as set out beforehand.
  • connections can be established not only by screws but also by rivets, bonding techniques, in particular adhesion techniques, welding, fusing, two-component methods and the like.
  • the proposed door latch can easily be attached and detached to baking ovens, in more general terms household appliances.
  • the proposed door latch can easily be applied to existing appliances.
  • the door latch may be composed of just a few components, which in turn can easily be manufactured and assembled. Beyond this, the door latch allows high latching efficiency and is comparatively robust.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Ovens (AREA)

Claims (11)

  1. Appareil domestique (1) comprenant une porte avant (4) et un verrou de porte (2) adapté pour verrouiller la porte (4) dans un état fermé, le verrou de porte comprenant une partie de fixation (6) pour fixer le verrou de porte (2) à l'appareil (1) et une partie de verrouillage (7) pour réaliser un engagement de verrouillage avec la porte (4), la partie de verrouillage (7) comprenant un élément de verrouillage en forme de crochet (9), dans lequel le verrou de porte (2) comprend un corps de base qui comprend au moins la partie de fixation (6) et la partie de verrouillage (7), dans lequel le corps de base est constitué d'un corps élastique de type feuille pliée d'une seule pièce constitué d'un matériau souple et élastique, de telle sorte que:
    i) l'élément de verrouillage (9) soit maintenu dans une position de verrouillage aussi longtemps qu'aucune force de poussée n'est appliquée à la partie de verrouillage (7),
    ii) si une force de poussée qui agit essentiellement perpendiculairement au sens de longueur global et perpendiculairement à une surface supérieure (11) de l'élément de verrouillage (9) est appliquée à la partie de verrouillage (7), la partie de verrouillage (7) est élastiquement défléchie, et
    iii) la partie de verrouillage (7) retourne à nouveau dans la position de verrouillage si la force de poussée est relâchée, caractérisé en ce que la partie de fixation (6) et la partie de verrouillage (7) sont, par rapport au sens de longueur global (D) du verrou de porte (2), tordues d'environ 90 degrés.
  2. Appareil domestique (1) selon la revendication 1, dans lequel l'élément de verrouillage de type crochet (9) est prévu au niveau de et de préférence fixé à une languette de verrouillage (10) de la partie de verrouillage (7).
  3. Appareil domestique (1) selon la revendication 1 ou 2, dans lequel la languette de verrouillage (10) fait saillie dans le sens de longueur global (D) à partir d'une section intermédiaire de préférence en forme de bande (14) qui est orientée transversalement au sens de longueur global (D), dans lequel la languette de verrouillage (10) et la section intermédiaire (14) forment de préférence un angle d'environ 90 degrés.
  4. Appareil domestique (1) selon l'une quelconque des revendications 1 à 3, dans lequel la section intermédiaire (14) comprend une section en forme de U (15, 16), dans lequel une ouverture de section (17) de la section en forme de U (15, 16) est orientée transversalement au sens de longueur global (D), et la partie de verrouillage (7) s'étend à partir de l'une des branches (15) de la section en forme de U (15, 16) et la partie de fixation (6) s'étend à partir de l'autre des branches (15) de la section en forme de U (15, 16) dans une direction opposée à la partie de verrouillage (7).
  5. Appareil domestique (1) selon l'une quelconque des revendications 1 à 4, dans lequel le corps de base est constitué de métal et/ou de plastique.
  6. Appareil domestique (1) selon l'une quelconque des revendications 1 à 5, dans lequel la partie de fixation (6) présente une section d'extrémité plane en forme de s (18) qui comporte de préférence un trou de vis oblong (20) pour fixer le verrou de porte (2) à l'appareil (1).
  7. Appareil domestique (1) selon l'une quelconque des revendications 1 à 6, dans lequel l'élément de verrouillage (9) comprend un élément en forme de coin (9) attaché à la languette de verrouillage (10), constituant en combinaison une dent de verrouillage (13) pour réaliser un engagement de verrouillage avec la porte (4).
  8. Appareil domestique (1) selon l'une quelconque des revendications 1 à 7, l'appareil domestique (1) étant un four de cuisson (1).
  9. Appareil domestique (1) selon l'une quelconque des revendications 1 à 8, dans lequel le verrou de porte est adapté pour verrouiller la porte au niveau d'un bord supérieur ou latéral de la porte (4).
  10. Appareil domestique (1) selon l'une quelconque des revendications 1 à 9, dans lequel le verrou de porte (2) est attaché à une paroi latérale (8) de l'appareil domestique (1), et dans lequel, à l'état fermé de la porte (4), la partie de verrouillage (7) fait saillie au moins partiellement à partir d'une face avant de l'appareil (1), de préférence à travers un espace (23) entre un bord inférieur d'une plaque de recouvrement supérieure (5) et un bord supérieur de la porte (4).
  11. Appareil domestique (1) selon l'une quelconque des revendications 1 à 10, dans lequel le verrou de porte (2) comprend une section intermédiaire (14) qui présente une section en forme de U (15, 16) selon la revendication 4, dans lequel la section en forme de U engage une barre verticale respective (24) de l'appareil (1).
EP11004646.3A 2011-06-08 2011-06-08 Appareil Domestique Active EP2532973B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11004646.3A EP2532973B1 (fr) 2011-06-08 2011-06-08 Appareil Domestique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11004646.3A EP2532973B1 (fr) 2011-06-08 2011-06-08 Appareil Domestique

Publications (2)

Publication Number Publication Date
EP2532973A1 EP2532973A1 (fr) 2012-12-12
EP2532973B1 true EP2532973B1 (fr) 2017-11-29

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EP11004646.3A Active EP2532973B1 (fr) 2011-06-08 2011-06-08 Appareil Domestique

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
US12104797B2 (en) 2020-09-30 2024-10-01 Whirlpool Corporation Cooking appliance provided with a door latch assembly

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Publication number Priority date Publication date Assignee Title
SI25410A (sl) 2017-04-14 2018-10-30 Gorenje Gospodinjski Aparati, D.D. Naprava za blokiranje vrat pri gospodinjskem aparatu
US10401081B2 (en) * 2017-10-13 2019-09-03 Whirlpool Corporation Adapter crossbar for appliance user interface
EP3546835A1 (fr) * 2018-03-28 2019-10-02 Electrolux Appliances Aktiebolag Mécanisme de verrouillage pour porte d'un appareil ménager
PL235690B1 (pl) * 2018-03-29 2020-10-05 Amica Spolka Akcyjna Układ blokady drzwi, zwłaszcza piekarnika

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US2794663A (en) * 1955-07-05 1957-06-04 Arrowsmith Tool & Die Corp Combination latch and dead bolt
DE8137042U1 (de) 1981-12-18 1982-03-18 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Gargeraet
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WO2003018943A1 (fr) * 2001-08-24 2003-03-06 Arcelik, A.S. Mecanisme de verrouillage
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JP2008196733A (ja) * 2007-02-09 2008-08-28 Sharp Corp 加熱調理器
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12104797B2 (en) 2020-09-30 2024-10-01 Whirlpool Corporation Cooking appliance provided with a door latch assembly

Also Published As

Publication number Publication date
EP2532973A1 (fr) 2012-12-12

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