EP0893654A1 - Porte de four et procédé d'assemblage à cet effet - Google Patents

Porte de four et procédé d'assemblage à cet effet Download PDF

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Publication number
EP0893654A1
EP0893654A1 EP98112450A EP98112450A EP0893654A1 EP 0893654 A1 EP0893654 A1 EP 0893654A1 EP 98112450 A EP98112450 A EP 98112450A EP 98112450 A EP98112450 A EP 98112450A EP 0893654 A1 EP0893654 A1 EP 0893654A1
Authority
EP
European Patent Office
Prior art keywords
inner liner
hinge
door
door element
opening
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.)
Granted
Application number
EP98112450A
Other languages
German (de)
English (en)
Other versions
EP0893654B1 (fr
Inventor
Kenneth L. Davis
Keith Ray
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
Publication of EP0893654A1 publication Critical patent/EP0893654A1/fr
Application granted granted Critical
Publication of EP0893654B1 publication Critical patent/EP0893654B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F24C15/04—Doors specially adapted for stoves or ranges with transparent panels

Definitions

  • the invention is directed to an oven door, and more specifically to a simplified construction and assembly of an oven door.
  • an oven comprises a structural frame defining a baking chamber with an open side, which is closed by an oven door.
  • ovens in the home appliance industry can be categorized as either a built-in or a stand-alone oven.
  • the built-in ovens are designed to be installed within a kitchen cabinet and, therefore, do not have an outer cabinet or skin attached to the frame.
  • the stand-alone ovens do have a cabinet for aesthetic reasons and typically include a cook top provided as part of the cabinet.
  • a disadvantage of this type of oven door construction is that each of the oven door elements is connected to each other and there is a large number of screws used, resulting in an undesirably large number of parts to assemble and a relatively complex assembly method. It is desirable to simplify the door construction and its assembly, especially in the home appliance industry where price competition is very great and any reduction in parts numbers or assembly time can result in a competitive advantage.
  • the oven door according to the invention comprises an inner liner, which is adapted to seal the access opening of an oven frame, and at least one interior door element.
  • a hinge is mounted to the inner liner to pivotally mount the door to the frame and to mount the interior door element to the inner liner.
  • the hinge is shaped to compress the interior door element between the inner liner and the hinge to compressively mount the interior door element to the inner liner.
  • the hinge can also be shaped to properly position the interior door element relative to the inner liner, so that when the hinge is mounted to the inner liner, the interior door element is properly positioned for assembly.
  • the invention also provides a novel method for assembling an oven door comprising an inner liner, at least one interior door element, and a hinge.
  • the method comprises placing the interior door element on the inner liner and securing the inner door element to the inner liner by mounting the hinge to the inner liner.
  • the mounting of the hinge to the inner liner can include compressively mounting the interior door element to the inner liner by compressing the interior door element between the hinge and the inner liner.
  • Fig. 1 illustrates an oven 10 illustrating the environment of the invention.
  • the oven 10 comprises a cabinet 12 mounted to a structural frame.
  • the cabinet defines a baking chamber 14.
  • a door 16, according to the invention, is mounted to the cabinet 12 and is rotatable between two positions for providing access to the baking chamber 14 or closing the baking chamber 14.
  • the oven 10 is illustrated as a stand-alone model with a cook top 18. However, it should be understood that the invention is not limited to a stand-alone oven as illustrated, but is applicable to any type of oven.
  • Fig. 2 is an exploded view of the oven door 16 and illustrates the various components of the door 16.
  • the major components of the door 16 include interior door elements: inner liner 18, window assembly 20, insulation layer 22, and insulation retainer 24; hinges 26; front panel 28; trim elements: top trim 30, bottom trim 32, left side trim 34, right side trim 36, and handle 38.
  • the inner liner 18 is generally rectangular and has a multilevel, pan-shaped base 40 (Fig. 8) from which extends a peripheral flange 42 having a top portion 42a, bottom portion 42b, left side portion 42c and right side portion 42d.
  • a window opening 44 is defined by a channel 46, extending from a first ledge 48.
  • the inner liner 18 further comprises a second ledge 50 and a third ledge 52.
  • the various ledges define the multilevel appearance of the inner liner 18. Each ledge also defines an effective recess whose function will be described with reference to the other door components.
  • the window assembly 20 comprises a window frame 54 that mounts opposing windows or panes of glass 56 and 58.
  • the window frame has a generally u-shaped cross section comprising opposed side walls 60 and 62 connected by a web 64.
  • Spring flanges 66 and 68 extend outwardly from the terminal ends of the side walls 60 and 62, respectively.
  • the spring flanges define an opening size that is slightly smaller than the perimeter of the windows 56 and 58. To thereby provide for a snap-fit mounting of the windows within the spring flanges upon assembly. Once the windows are snapped behind the spring flanges, the windows will rest on their associated side wall.
  • the insulation layer 22 can be of any suitable insulating material and is generally rectangular in shape having a central opening 70 that is sized to fit around the window frame 54.
  • the outer perimeter of the insulation layer is sized to rest on the second ledge 50 and fill in the space between the inner liner and the window assembly.
  • the insulation retainer 24 comprises a generally rectangular frame 71 having a peripheral flange 72.
  • a pair of positioning flanges 74 and 76 extend outwardly from the vertical sides of the peripheral flange 72.
  • the positioning flanges 74 and 76 each have a guide embossment 78, respectively. Also, the positioning flanges 74 and 76 do not extend entirely down to the bottom of the frame to aid in the mounting of the hinges as described below.
  • the frame 71 comprises an inner peripheral lip 82, which defines window 84.
  • the hinges 26 are substantially identical and comprise a first hinge arm 86, pivotally mounted to a second hinge arm 88.
  • the first hinge arm 86 is a hanger 90, which is adapted to be mounted to the cabinet 12 of the oven 10.
  • the second hinge arm 88 is an elongated u-shaped channel member 92 comprising opposing side walls 94 and 96 connected by a web 98.
  • the side walls include multiple tabs 100, 102, and 104.
  • the tabs 104 has formed therein a positioning notch 106.
  • a bumper opening 108 and an alignment opening 110 (Fig.8) are formed in the web 98 of the elongated channel member 92.
  • the mounting tab 112 extends from the upper end of the elongated channel member 92.
  • Two screw holes (not shown) are formed in the lower end of the elongated channel member 92.
  • the front panel 28 is preferably a glass panel having a substantially opaque outer area 116 and a substantially transparent inner window as in 118.
  • the outer panel 28 is illustrated as a glass panel, any suitable panel for covering the outer surface of the door is satisfactory. The particular features or construction of the outer panel are not pertinent to the invention.
  • Figs. 4-10 illustrate the assembly of the oven door. The description of the assembly is best started with reference to Fig. 4.
  • a gasket 120 is placed within the channel 46 of the inner liner 18.
  • Door clips 122 are then clipped onto the peripheral flange 42 of the inner liner.
  • a latch bracket 124 is fastened to the upper portion of the peripheral flange 42. The fixing or mounting of the gasket 120, door clips 122 and latch bracket 124 can occur during the assembly of the entire door or as part of a sub-assembly in putting together the inner liner 18.
  • the inner liner is ready to receive the window assembly 20.
  • the window assembly 20 is formed by pressing the windows 56 and 58 past the spring flanges 66 and 68, respectively, until they rest against the side walls 60, 62 respectively. In this position, the windows 56 and 58 are retained by the spring flanges 66, 68 against the side walls 60 and 62.
  • the assembly of the window assembly can also be pre-assembled prior to assembling the oven door or occur during the assembly of the oven door. Once the window assembly is assembled, it is positioned on the inner liner so that the window 58 is generally centered about the window 44 of the inner liner and abuts the gasket 120 (Figs. 11 and 12) to seal the window assembly 20 with respect to the inner liner 18.
  • the insulation layer 22 is then positioned on the inner liner so the window assembly 20 is received within the window opening 70 of the insulation layer 22.
  • the insulation layer 22 generally rests on the second ledge 50 (Fig 12) of the inner liner and fills in the space between the inner liner and the window assembly, including filling in and resting on the first ledge 48.
  • the insulation layer does not extend onto the third ledge 52.
  • the insulation layer 22 can spread onto the third ledge 52.
  • the insulation retainer 24 is positioned on the inner liner 18.
  • the positioning flanges 74 and 76 of the insulation retainer 24 rest upon the third ledge 52 and the peripheral flange 72 rests on or is adjacent to the third ledge 52.
  • the peripheral lip 82 passes through the window opening 70 of the insulation layer 22 and rests on the window 56 of the window assembly 20.
  • the peripheral lip 82 cooperates with the spring flanges on the window assembly to align the window assembly relative to the insulation retainer.
  • the insulation layer is then captured between the peripheral flange 72 and the peripheral lip 82 of the insulation retainer to prevent the insulation from being visible through aligned windows and window openings of the door.
  • the hinges 26 are assembled to the inner liner 18 after the insulation retainer 24 is positioned. Bumpers 80 are mounted to the hinges 26 by inserting them into the opening 108.
  • the hangers are first inserted into a hinge opening 126 provided at the lower corners of the inner liner. The hinge 26 is then rotated toward the inner liner bringing the upper end of the hinges 26 toward the upper portion of the peripheral flange 42. The hinges 26 are rotated toward the inner liner 18 until the tabs 100, 102 and 104 abut the positioning flanges 74 and 76.
  • the mounting of the hinges also compressively retains at least the insulation retainer against the inner liner 18. This occurs during the rotation of the hinges toward the inner liner.
  • the tabs 100, 102, and 104 contact the positioning flanges 74 and 76, the mounting tab 112 extending from the upper end of the elongated channel member 92 still lies above the tab slot 128 in the inner liner.
  • the elongated channel member 92 must be pressed toward the inner liner 18 to align the tab 112 with the tab slot 128.
  • the positioning flange is compressed between the hinge 26 and the inner liner 18 to compressively mount the insulation retainer to the inner liner.
  • the top trim 30 is then connected to the handle 38 by inserting mounting embossments 130 on the handle 38 into embossment openings 132 on the top trim 30. Screws 134 are then passed through the back side of the top trim 30 and into the handle to secure the handle 38 to the top trim 30 without the screws being visible to the user.
  • the assembled top trim 30 and handle 38 is then mounted to the hinges 26 by inserting the mounting embossments 130 into the alignment openings 110. Screws 136 are then passed through openings in the inner liner and screwed into the mounting embossments 130 of the handle.
  • the use of the screw passing through the inner liner and into the handle further provides for compressively mounting the insulation retainer 24 to the inner liner 18. That is, as the screw is tightened, the handle 130 is drawn against the hinges 26 to further compressively retain the insulation retainer to the inner liner. It is within the scope of the invention to use alone, or in combination, the mounting tabs 112 with corresponding tab slots 128 and/or the mounting of the handle to the hinge to compressively retain the insulation retainer 24 to the inner liner 18.
  • one of the side trims 34 and 36, along with the bottom trim 32 are mounted to the inner liner.
  • the side trims are mounted to the inner liner by inserting the upper end into the top trim 30 and fastening the lower end to the bottom portion 42a of the peripheral flange 42 by a suitable fastener such as a screw.
  • the bottom trim 32 is mounted to the bottom portion of the peripheral flange 42 by a suitable fastener such as a screw.
  • the top trim 30, one of the side trims 34 and 36, and the bottom trim 32 all define a channel for receiving the front panel 28 when the trim pieces are mounted to the inner liner 18.
  • the trim pieces can be mounted in any suitable order that permits the installation of the front panel.
  • the trim pieces are assembled by first installing the bottom trim 32 by fastening its middle portion to the lower portion 42b of the peripheral lip 42 of the insulation retainer. The front panel is then slid between the top trim and the bottom trim. Thereafter, the sides trim pieces are mounted.
  • the door construction and assembly according to the invention provide a simplified door construction and assembly that greatly reduces the number of parts, especially the number of fasteners, needed to assemble the door along with reducing the complexity and time for assembling the door.
  • a reduced part count in the simplified assembly method provides the invention with a competitive advantage over previous door constructions, which is very valuable in a highly competitive market such as the home appliance industry.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Refrigerator Housings (AREA)
  • Electric Ovens (AREA)
EP19980112450 1997-07-25 1998-07-06 Porte de four et procédé d'assemblage à cet effet Expired - Lifetime EP0893654B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US5372197P 1997-07-25 1997-07-25
US53721P 1997-07-25

Publications (2)

Publication Number Publication Date
EP0893654A1 true EP0893654A1 (fr) 1999-01-27
EP0893654B1 EP0893654B1 (fr) 2003-10-01

Family

ID=21986108

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980112450 Expired - Lifetime EP0893654B1 (fr) 1997-07-25 1998-07-06 Porte de four et procédé d'assemblage à cet effet

Country Status (3)

Country Link
EP (1) EP0893654B1 (fr)
BR (1) BR9802574A (fr)
DE (1) DE69818575T2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1939533A3 (fr) * 2006-12-21 2011-01-12 BSH Bosch und Siemens Hausgeräte GmbH Porte d'appareil ménager
EP2662635A1 (fr) * 2012-05-10 2013-11-13 Miele & Cie. KG Appareil ménager
CN109820433A (zh) * 2019-04-12 2019-05-31 徐育平 一种家用电烤箱的箱门密封结构

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818890A (en) * 1973-07-16 1974-06-25 Gen Motors Corp Ventilated windowed oven door
US3855994A (en) * 1973-07-16 1974-12-24 Gen Motors Corp Ventilated windowed oven door
GB1417230A (en) * 1972-09-05 1975-12-10 Gen Electric Oven door
US4163444A (en) * 1977-01-06 1979-08-07 Les Industries Bfg Limitee Door for pyrolytic range
US4207863A (en) * 1977-01-06 1980-06-17 Les Industries Bfg Limitee Door for pyrolytic range
EP0549933A1 (fr) * 1991-12-30 1993-07-07 FULGOR S.p.A. Porte de four

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1417230A (en) * 1972-09-05 1975-12-10 Gen Electric Oven door
US3818890A (en) * 1973-07-16 1974-06-25 Gen Motors Corp Ventilated windowed oven door
US3855994A (en) * 1973-07-16 1974-12-24 Gen Motors Corp Ventilated windowed oven door
US4163444A (en) * 1977-01-06 1979-08-07 Les Industries Bfg Limitee Door for pyrolytic range
US4207863A (en) * 1977-01-06 1980-06-17 Les Industries Bfg Limitee Door for pyrolytic range
EP0549933A1 (fr) * 1991-12-30 1993-07-07 FULGOR S.p.A. Porte de four

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1939533A3 (fr) * 2006-12-21 2011-01-12 BSH Bosch und Siemens Hausgeräte GmbH Porte d'appareil ménager
EP2662635A1 (fr) * 2012-05-10 2013-11-13 Miele & Cie. KG Appareil ménager
CN109820433A (zh) * 2019-04-12 2019-05-31 徐育平 一种家用电烤箱的箱门密封结构

Also Published As

Publication number Publication date
BR9802574A (pt) 2000-10-10
EP0893654B1 (fr) 2003-10-01
DE69818575T2 (de) 2004-08-05
DE69818575D1 (de) 2003-11-06

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