EP2990731A1 - Procédé de mise à la terre pour une plaque de cuisson et dispositif de cuisson doté d'une telle plaque de cuisson - Google Patents

Procédé de mise à la terre pour une plaque de cuisson et dispositif de cuisson doté d'une telle plaque de cuisson Download PDF

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Publication number
EP2990731A1
EP2990731A1 EP15181588.3A EP15181588A EP2990731A1 EP 2990731 A1 EP2990731 A1 EP 2990731A1 EP 15181588 A EP15181588 A EP 15181588A EP 2990731 A1 EP2990731 A1 EP 2990731A1
Authority
EP
European Patent Office
Prior art keywords
cooktop plate
connection element
cooking device
connection
retaining
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Withdrawn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
EP15181588.3A
Other languages
German (de)
English (en)
Inventor
Engin Atalay
Aytaç Balkan
Hakki Çagatay Kartal
Erdem Turan
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
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 BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP2990731A1 publication Critical patent/EP2990731A1/fr
Withdrawn legal-status Critical Current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
    • F24C15/10—Tops, e.g. hot plates; Rings
    • F24C15/102—Tops, e.g. hot plates; Rings electrically heated
    • F24C15/104—Arrangements of connectors, grounding, supply wires

Definitions

  • the present invention relates to formation of a grounding line between a cooktop plate having insulation coating thereon and an electrical unit having no insulation layer thereon, during assembly of the cooktop plate.
  • a radiant or a non-radiant electrical heater group shall be grounded from a section thereof connected to a cooktop plate.
  • a mechanical and electrical connection is needed between the two pieces.
  • a connection element having conductive structure like a bolt, and additional connection elements are utilized. However, if there is an insulation coating on one of the pieces, said insulation layer shall be stripped slightly.
  • a grounding embodiment provided on a cooking device can be seen.
  • a grounding embodiment is presented for an electrical device, particularly for a cooking device.
  • the cooking device has a metal outer layer and within this, it has a thicker metal insert that has a threaded hole.
  • the outer layer is electrically grounded and good contact with the inner region is provided by a screw that has a serrated surface.
  • the object of the present invention is to provide grounding of the electricity, provided on an electrical heating unit of the cooktop plate of the cooking device, through the cooktop plate, and realizing said grounding process in the shortest time possible and with the minimum number of process steps.
  • the present invention is a cooking device comprising a cooktop plate made of metal material and having an insulation layer; an electrical heating unit fixed to the cooktop plate by means of a retaining element; and at least one metal connection element providing fixation of the retaining element to a frame of the cooktop plate through a connection opening.
  • the cooktop plate comprises at least one embossed form defined at the periphery of the connection opening so as to correspond to at least one cutting edge of the connection element.
  • the embossed form is in the form of an elevation formed by a metal layer forming the frame and by an insulation layer which covers at least one side of the metal layer.
  • the embossed form comprises a retaining surface so as to correspond to the cutting edge of the connection element, and a stripping surface which at least partially encircles the retaining surface.
  • connection element is positioned so as to contact the retaining element made of metal material and the metal layer of the frame.
  • electrical transmission which is needed for grounding, is provided through the connection element.
  • connection element is a screw.
  • an element which is metal and conductive and which provides fixation, is used.
  • the screw is easy to assemble and fix since it comprises threads thereon.
  • the retaining element comprises a retaining section which is bendable so as to absorb the forces applied on the electrical heating unit.
  • the electrical heating unit is not damaged during vibrations.
  • the retaining element comprises a threaded housing through which the connection element passes and whereto the connection element is fixed.
  • the connection element which is in screw form, is fixed so as not to be accidentally removed back.
  • the threaded housing of the retaining element is formed on the fixation section so as to be angled with respect to the fixation section.
  • the present invention relates to a method for formation of a grounding line between an electrical heating unit and a cooktop plate made of metal material and having an insulation layer thereon and having a retaining element fixing said electrical heating unit to a frame of the cooktop plate, during assembly of the cooktop plate.
  • the subject matter method comprises the method steps of fixing the retaining element to a connection opening of the frame by means of a metal connection element; and bringing the connection element into contact with a conductive layer by means of stripping an insulation layer, provided on an embossed form of the cooktop plate, by a cutting edge of the connection element during the assembly of the connection element in order to provide an electrical transmission line realizing grounding.
  • a grounding line is provided on the cooktop plate of an electrical heating unit fixed to the cooktop plate during assembly of the cooktop plate.
  • the present invention relates to grounding method of a cooktop plate (10) having an electrical heating unit (12), and relates to a cooking device (1) having said cooktop plate (10).
  • Figure 1 is a top perspective view of a frame (11) of a cooktop plate (10) of the cooking device (1).
  • the frame (11) of the cooktop plate (10) is made of a metal material.
  • the electrical heating unit (12) is fixed to the frame (11) by means of connection elements (2) and the frame (11) carries the electrical heating unit (12).
  • a grounding terminal (8) is assembled to a connection opening (110) provided on the frame (11), and a grounding cable (9) is connected to the grounding terminal (8).
  • a ceramic glass panel (not illustrated in the figure) is fixed onto the frame (11) of the cooktop plate (10). Foodstuffs are cooked in pans placed on the ceramic glass panel.
  • the cooktop plate (10) or the frame (11) made of metal material are covered with insulation material.
  • FIG. 2 is a frontal perspective view of a cooking device (1).
  • the cooking device (1) is preferably formed by a cooktop and a cooking chamber (13).
  • the cooking device (1) may only be a cooktop.
  • the cooktop may be a gas cooktop or an electrical cooktop.
  • the electronic or thermal control of the cooktop is realized through pluralities of buttons (14) positioned on the cooking device (1).
  • FIG. 1 Detail A is taken from Figure 1 , and it is a zoomed view of the section to which a retaining element (7) is connected.
  • the retaining element (7) is fixed to the frame (11) with the help of a connection element (2), and it carries the electrical heating unit (12).
  • Pluralities of retaining elements (7) are fixed through the frame (11).
  • the retaining elements (7) bend as a result of any force acting on the cooktop plate (10), and they absorb the force, and they prevent damaging of the electrical heating unit or units (12).
  • the bending movement is provided by means of the form of a retaining section (70) of the retaining element (7), which is defined at a specific slope with respect to a fixation section (71).
  • connection opening (110) is taken from Detail A, and it is a zoomed view of a subject matter connection opening (110).
  • Pluralities of connection openings (110) are formed on the cooktop plate (10) or on the frame (11) of the cooktop plate (10).
  • one or more than one embossed form (111) is formed on a periphery of the connection opening (110).
  • three embossed forms (111) are positioned side by side at a specific angle with respect to each other.
  • the embossed form (111) comprises a planar retaining surface (1111), and a stripping surface (1112) which makes a slope from the retaining surface (1111) and which partially encircles the periphery of the retaining surface (1111).
  • the embossed form(s) (111) is/are formed on a metal layer (4) by means of female and male molds (5) or a female mold (5) and by means of a male punching unit (6) corresponding thereto ( Figure 6 ). Said metal layer (4) will form the cooktop plate (10) or the frame (11).
  • Figure 3 is the view of the layers forming the cooktop plate (11) or the frame (11) of the cooktop plate (11).
  • the metal layer (4) is covered by an insulation paint or an insulation material, an insulation layer (41) is observed in the middle section and an insulation layer (40) is observed in the upper and/or lower section thereof.
  • Figure 4 is the view of the assembled form of the retaining element (7) and of the connection element (2) to the cooktop plate (10) when the cooktop plate (10) is frontally viewed.
  • Figure 5 is the view where the retaining element (7) and the connection element (2) are assembled to the cooktop plate (10) in a reversed position of the cooktop plate (10).
  • Figure 6 is the view of a metal layer (4) forming the cooktop plate (10) or the frame (11) thereof and a mold (5) and a punching unit (6) forming the subject matter connection openings (110) provided on said metal layer (4).
  • the punching tips (61) of the punching unit (6) provide a form (51), existing on the mold (5), to be provided above the metal layer (4), and at the same time, they provide formation of the connection opening (110).
  • the form (51) provides formation of the connection opening (110), and besides, it provides embossed forms (111) to the metal layer (4).
  • Figure 7a is a lateral perspective view of the retaining element (7).
  • Figure 7b is a lateral two dimensional view of the retaining element (7).
  • Figure 7c is a top two dimensional view of the retaining element (7).
  • the fixation section (71) of the retaining element (7) comprises a threaded housing (711). There is an " ⁇ " angle between a plane of the fixation section (71) and a plane of the threaded housing (711).
  • the connection element (2) is fixed to the threaded housing (711). Since the plane of the threaded housing (711) is angled, the connection element (2) is prevented from being accidentally removed from the place thereof or being turned and released accidentally.
  • a hole can be formed instead of the threaded housing (711).
  • a bolt is used as the connection element (2), and a nut is used corresponding thereto.
  • Figure 8a is the lateral view of the connection element (2).
  • the connection element (2) is a screw. At least one cutting edge (201) is formed at a lower section of a head section (20) of the connection element (2).
  • Figure 8b is the view where the cutting edges (201) of the connection element (2) can be seen when the connection element (2) is viewed from the bottom.
  • Figure 9a is the bottom view of a washer (3)
  • Figure 9b is a lateral two dimensional view of a washer (3).
  • the operation of the present invention is as follows.
  • the cooktop plate (10) or a frame (11) of the cooking device (1) provided at a bottom section so as to carry the cooktop plate (10) is formed by using metal layers (4).
  • Said metal layer (4) is covered by an insulation paint or a coating.
  • the insulation layer (40) may be an enamel layer.
  • the present invention relates to providing a grounding between a cooktop plate (10) whereon insulation coating is provided and an electrical heating unit (12) whereon there is no insulation layer (40), during assembly of the cooktop plate (10).
  • the insulation layer (40) is stripped.
  • the connection element (2) having the cutting edge (201) cannot strip the insulation coating under approximately 3 Newton-meter torque.
  • the teeth of the connection element (2) and a threaded housing (711) of the retaining element (7) are deformed, and they cannot fulfil their functions.
  • said connection section of the frame (11) has an even surface, and it has a planar form.
  • the subject matter embossed form (111) is created, and it is integrated to the production - assembly step.
  • the embossed form (111) is an elevation form on a periphery of the connection opening (110), and it is formed on the periphery (11) of the cooktop plate (10).
  • the embossed form (111) on the frame (11) and at the same time, the connection opening (110) are formed by using a mold (5) and a punching unit (6) or female and male molds (5). The formation thereof by using mold (5) and punching unit (6) can be seen in Figure 6 . On the mold (5), an opening is formed, and around the openings, depressions are formed.
  • the metal layer (4) is placed to an upper surface of the mold (5), and afterwards, the punching tips (61) of the punching unit (6) press on the metal layer (4).
  • the punching tips (61) form the connection openings (110) on the metal layer (4).
  • the depression form on the mold (5) provides formation of embossed form (111) on the metal layer (4).
  • connection element (2) passes through the connection opening (110) of the metal layer (4) in a contactless manner.
  • connection element (2) can be tightly fixed to a threaded housing (711) of the retaining element (7).
  • embossed forms (111) provide the insulation layer (40) to be stripped and exposed, and they provide the connection element (2) to contact the conductive layer (41).
  • connection element (2) is made of a metal material providing conduction of electricity. They are connected to each other in a shrink-fit manner. Electrical transmission is realized in a firm manner through this connection.
  • the washer (3) fixed on a bottom section of the connection element (2), is turned during the assembly of the connection element (2) to the threaded housing (711), and it provides stripping of the insulation layer (40).
  • the embossed forms (111) provide the breakage of the surface of the insulation layer (40) in a more rapid and efficient manner, and they provide having surface breakages on the conductive layer (41).
  • the grounding through the cooktop plate (10) is provided as follows. Particularly grounding of the electrical heating unit (12) is provided.
  • the retaining element(s), which retain(s) the electrical heating unit (12) from one or more than one point thereof, are made of metal materials.
  • the electrical current desired to be grounded through the electrical heating unit (12) passes to the retaining element (7) and afterwards to the connection element (2).
  • the electrical current, existing on the connection element (110), passes through the connection opening (110), whose insulation layer (40) is stripped, to the conductive layer (41). Since the conductive layer (41) is provided along the whole frame (11), it passes through the conductive layer (41) of the whole frame (11). Afterwards, it passes to a grounding terminal (8) connected to another connection opening (110) provided on the frame (11). From here, it is grounded by means of a grounding cable (9).
  • a wall thickness of the metal layer (4) is 2 mm. Moreover, the torque value during the assembly of the connection element (2) is below 3 Newton-meters, and a wall thickness of the insulation layer (40) is above 90 micrometers.
  • embossed forms (111) are created in a single and same process during formation of the connection openings (110) provided on the frame (11).
  • the stripping/removal of the insulation layer (40) and bringing thereof into contact with the conductive layer (41) are provided in a rapid and easy manner with desired efficiency. Efficiency is important for providing electrical transmission and afterwards for providing grounding.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Induction Heating Cooking Devices (AREA)
  • Baking, Grill, Roasting (AREA)
EP15181588.3A 2014-08-26 2015-08-19 Procédé de mise à la terre pour une plaque de cuisson et dispositif de cuisson doté d'une telle plaque de cuisson Withdrawn EP2990731A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TR2014/09996A TR201409996A2 (tr) 2014-08-26 2014-08-26 Bir ocak tablasının topraklanması yöntemi ve bu ocak tablasına sahip bir pişirici cihaz.

Publications (1)

Publication Number Publication Date
EP2990731A1 true EP2990731A1 (fr) 2016-03-02

Family

ID=53969205

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15181588.3A Withdrawn EP2990731A1 (fr) 2014-08-26 2015-08-19 Procédé de mise à la terre pour une plaque de cuisson et dispositif de cuisson doté d'une telle plaque de cuisson

Country Status (2)

Country Link
EP (1) EP2990731A1 (fr)
TR (1) TR201409996A2 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB561669A (en) * 1943-02-05 1944-05-30 English Electric Co Ltd Mounting of electric hot plates
GB2143030A (en) * 1983-07-08 1985-01-30 Bosch Siemens Hausgeraete Cooker hob
GB2154079A (en) 1984-02-02 1985-08-29 Brian David Hamblin Earthing electrical enclosures
DE8811910U1 (de) * 1988-09-20 1988-11-10 Bosch-Siemens Hausgeräte GmbH, 8000 München Backofen
GB2281155A (en) * 1993-08-18 1995-02-22 Daiichi Denso Buhin Electrical continuity conductive connector
US20030005829A1 (en) * 2001-07-06 2003-01-09 Martin Taplan Cooking station with a glass-ceramic bowl having a sunken curved heating surface
DE102005010044A1 (de) 2005-03-04 2006-09-07 BSH Bosch und Siemens Hausgeräte GmbH Schutzkontaktverbindung
WO2008072936A1 (fr) * 2006-12-14 2008-06-19 Lg Electronics Inc. Appareil de cuisson

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB561669A (en) * 1943-02-05 1944-05-30 English Electric Co Ltd Mounting of electric hot plates
GB2143030A (en) * 1983-07-08 1985-01-30 Bosch Siemens Hausgeraete Cooker hob
GB2154079A (en) 1984-02-02 1985-08-29 Brian David Hamblin Earthing electrical enclosures
DE8811910U1 (de) * 1988-09-20 1988-11-10 Bosch-Siemens Hausgeräte GmbH, 8000 München Backofen
GB2281155A (en) * 1993-08-18 1995-02-22 Daiichi Denso Buhin Electrical continuity conductive connector
US20030005829A1 (en) * 2001-07-06 2003-01-09 Martin Taplan Cooking station with a glass-ceramic bowl having a sunken curved heating surface
DE102005010044A1 (de) 2005-03-04 2006-09-07 BSH Bosch und Siemens Hausgeräte GmbH Schutzkontaktverbindung
WO2008072936A1 (fr) * 2006-12-14 2008-06-19 Lg Electronics Inc. Appareil de cuisson

Also Published As

Publication number Publication date
TR201409996A2 (tr) 2016-03-21

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