EP0102015B1 - Plaque de cuisson électrique - Google Patents

Plaque de cuisson électrique Download PDF

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Publication number
EP0102015B1
EP0102015B1 EP83107990A EP83107990A EP0102015B1 EP 0102015 B1 EP0102015 B1 EP 0102015B1 EP 83107990 A EP83107990 A EP 83107990A EP 83107990 A EP83107990 A EP 83107990A EP 0102015 B1 EP0102015 B1 EP 0102015B1
Authority
EP
European Patent Office
Prior art keywords
electric
hotplate
flexible
leads
electric hotplate
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.)
Expired
Application number
EP83107990A
Other languages
German (de)
English (en)
Other versions
EP0102015A3 (en
EP0102015A2 (fr
Inventor
Karl Fischer
Felix Schreder
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.)
EGO Elektro Geratebau GmbH
Original Assignee
EGO Elektro Gerate Blanc und Fischer 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
Priority claimed from US06/411,458 external-priority patent/US4467181A/en
Application filed by EGO Elektro Gerate Blanc und Fischer GmbH filed Critical EGO Elektro Gerate Blanc und Fischer GmbH
Publication of EP0102015A2 publication Critical patent/EP0102015A2/fr
Publication of EP0102015A3 publication Critical patent/EP0102015A3/de
Application granted granted Critical
Publication of EP0102015B1 publication Critical patent/EP0102015B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/06—Heater elements structurally combined with coupling elements or holders
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/016—Heaters using particular connecting means

Definitions

  • the invention relates to an electric hotplate with a hotplate body and a lower cover as well as an insulating piece protruding from the cover for the passage of the electric hotplate connections through the cover, wherein heat-resistant, insulated, flexible connecting lines are sufficiently long to arrange their connecting piece outside the area of the electric hotplate lead a common, freely movable connector, and wherein the ends of the flexible connecting lines are formed for insertion into a connection base.
  • Such an electric hotplate is known from DE-A-2 933 350 by the same applicant.
  • an electric hotplate with flexible connecting lines is known, the ends of which are connected by a common connecting piece, which contained plug or screw terminals. These lines can be bent back over the middle of the hotplate and the connection piece can lie in a recess in the underside cover of the hotplate. For transport and storage, the electric hotplate with the connector does not need more space than without.
  • the object of the invention is to further develop this electric hotplate with a view to making it even easier to assemble and assembling, and for even greater security in connection.
  • the connecting piece contains holding devices which hold the flexible connecting lines close to their ends and keep the ends aligned in parallel with one another in the manner of connecting pins or lugs, the ends being designed for insertion into a connecting base. It is therefore no longer necessary to provide special connecting terminals or pins, but the ends themselves form the connecting pins, which can be connected to the connecting base by screw or preferably plug connections. Nevertheless, the entire hotplate connection can be carried out with a handle or a gripper actuation of an industrial robot.
  • the connection can preferably also be made non-rotatable in that the connection piece or the connection lines are designed or arranged in such a way that the connection can be made in only one, namely the correct, orientation.
  • the connector may include channels into which the ends of the flexible leads are inserted, which are then secured in the channels by deformation. Versions with wire end ferrules are particularly suitable for this.
  • a feed-through part can preferably be provided on the hotplate, which leads the electrical connections through the hotplate cover. This can be formed in two parts so that it connects between the somewhat thickened connection between the flexible connecting line and the inner solid connecting wires in a recess and thereby prevents z. B. occurs by pressure on the connecting wires from the inside a contact between the inner solid connecting wires and the hotplate body.
  • connection base is designed in the form of a connection block which has the corresponding plug connections for all hot plates of a cooking appliance.
  • This connection block can then be connected to a further connection block via a multi-core flexible line and in turn connected there with plug-in connections and the switches, controllers etc. can then also be provided there.
  • the assembly is largely fully automatic, in that the "connecting straps" consisting of the parallel flexible connecting wires are initially tilted towards the inside of the hotplate, so that the hotplate can be inserted from above into the mounting plate of the cooking appliance. Then a connector can be inserted almost and into the connector block attached centrally to the hot plates below the mounting plate.
  • FIGS. 1 and 2 show an electric hotplate 11 with a hotplate body 12 made of cast iron with a flat closed upper cooking surface 13. In its heated ring zone is the The hotplate is provided with spiral ribs, which form spiral grooves between them, in which heating coils 19 made of resistance wire are embedded in a ceramic mass 20. Terminal pins 80 are welded to the coils 19 and protrude from the ceramic mass 20. Connection lines 81 in the form of solid wires are welded to the connection pins 81 and run into channels 57 of an insulating feed-through part 51.
  • a downward, substantially cylindrical edge 21 extends around the perimeter of the hotplate body and a flange-like edge area of a circular cover 24 made of deformed sheet metal lies on the lower edge of the edge 21.
  • the edge area of the cover 24 contains an upward, i.e. for Cooking surface directed step, which rests on the inside of the edge 21 and thus centers the cover.
  • the insulating bushing 51 protrudes through the cover 24, which is supported on the inside of the cover by a step and which has channels 57 arranged next to one another, into which flexible connecting lines 58 protrude, which are surrounded by a good heat-resistant insulation 82.
  • the lead-through part 51 consists of two parts or halves which are designed to match one another and form the channels 57 between them. An inner recess 101 is formed within each channel, thus forming an enlarged section of the channel. As shown in FIG. 2, the insulation 82 protrudes into the channels and thereby forms a complete insulation of the connecting wires 58.
  • the flexible connections 58 consisting of strands are connected to the solid connecting wires 81 by an end-face weld.
  • the connection or welding point 100 has a larger diameter than the connecting wires 58.81 and the channel 57.
  • the connections 58, 81 are thus positioned in the recess 101 in such a way that they do not move in the axial direction can move substantially, so that it is in particular prevented that the connections are pressed inwards or upwards and come into contact with the hotplate body 12, which could lead to a short circuit.
  • the sleeves could have an outward flange or a shoulder, which ensure the axial fixing.
  • Both halves of the feed-through part 51 can be held in the correct alignment with one another by projections and recesses (not shown) on their contact surfaces. They are held together by insertion into the opening of the cover 24 and are held in their position by projections or feet 103 which are formed on each half of the feed-through part and which are supported on the underside of the hotplate body 12.
  • the basic shape of the lead-through part is elongated and aligned in the circumferential direction of the hotplate. It protrudes through the cover in the area of a formation.
  • the flexible hotplate connecting lines 58 are mechanically connected to one another at their outer ends by a connecting piece 75 made of ceramic insulating material. Due to the arrangement of the insulating piece in the radial direction approximately in the middle of the ring-shaped heated area of the hotplate and the dimensioning of the connecting lines, the outer edge 97 of the connecting piece is preferably at a maximum distance of less than one hotplate radius from the hotplate outer edge and can be flexibly adapted to the installation conditions , wherein the adjacent connecting lines act like a flexible band that allows easy pivoting and greater mobility of the connector in the vertical direction, but more restricted rotation and lateral movement.
  • the lead-through part 51 diametrically opposite and at a corresponding radial distance from the hotplate center is in the cover a recess 61, which is selected in its dimensions so that it can accommodate the projecting portion of the lead-through part 51 when the hotplates back to back and around 180 ° are stacked offset from one another without the connecting lines 58 having to be bent too sharply.
  • the width of the depression is substantially larger than that of the lead-through part, so that the connecting lines 58 can be folded inwards and the connecting piece 75 can lie in the depression 61 next to the insulating piece. But it is also possible to store the connector 75 folded outward in about the same plane as the hotplate.
  • each free end of each flexible connection line 58 is inserted in a channel 83 of the connector 75.
  • the channels 83 are arranged side by side and consist of holes which penetrate the connector 75, which is made of electrically insulating material and has the shape of a strip arranged transversely to the lines 58 and mechanically connects them near their ends so that the connecting lines 58 a Form a band or a strip.
  • Each of the holes has a circular cross section and a section 84 of larger and a section 85 of smaller diameter with an intermediate shoulder 86. At the mouth of the section 85 of each hole, two lateral recesses 87 are provided in the front surface 97 of the connector 75.
  • Each free end 90 of a connecting line is provided with a wire end sleeve 88 which consists of a sheet metal sleeve which surrounds the end of the wire strand.
  • the insulation is from gripped two sheet metal tabs 98 at their end.
  • the wire end sleeve 88 is made from a sheet metal blank that is first bent into the cross-sectional shape of a U. After inserting the wire into the U, it is bent into a circular shape (Fig. 4).
  • the also U-shaped pre-formed tabs 89 are pressed tightly around the insulation, which can be pushed on in the form of a loose insulating sleeve.
  • the insulator 89 strikes the shoulder 86 and positions the ferrule in the longitudinal direction.
  • the sleeve passes through the narrower portion 85 of the channel, but protrudes beyond surface 97 with its longer portion.
  • the final deformation of the wire end sleeve 88 is carried out in its section projecting over the front surface 97.
  • the sleeve is pressed into the kidney shape shown in FIG. 5, which is wider but lower than the previous circular shape (FIG. 4).
  • Fig. 5 shows that the lateral portions of the sleeve 88 are pressed into the recesses 87, which fix the ferrule both against pulling out of the channel and against rotation.
  • the wire end sleeve 90 thereby forms connection pins which can be inserted into each connection part and fixed there by means of screws, plug-in connection springs or the like.
  • Fig. 2 shows a connection base 91 made of insulating material which contains inner chambers which are accessible from the outside through openings from both sides.
  • a metal cage 92 is received in each of the chambers and receives a C-shaped, double spring clip 93, one free end 94 of which is sharply cut off while the other end 95 is bent inwards.
  • the ferrule 88 When the ferrule 88 is inserted from one side and a lead wire 96 from the other side, they are both clamped and electrically conductively pressed against the bottom of the cage 92 by the spring clip which is self-locking at its sharp end 94. At its bent end 95 it snaps into an obliquely or transversely arranged groove 98, which is pressed into the sleeve 88, whereby a sufficiently strong connection is made. If one tries to pull the wires out of the connection base from both sides, however, the wire end sleeve 88 is pulled out first (and only). It is therefore impossible for the uninsulated free end of the supply line 96 which is connected to the household network and is therefore live to be exposed.
  • the free ends of the flexible connecting lines are converted into a multiple plug, which can easily be connected with a connection base or with individual spring or screw connections.
  • the plugs or pins are held exactly parallel to each other and with the flat sides of the sleeve pointing in the desired direction.
  • the invention makes it possible to use automatic devices, for example industrial robots, to mount the hot plates in a cooking appliance, including the making of the electrical connections.
  • the measures that preclude a twisted connection could also be projections or recesses on the connecting piece that are gripped or removed by the gripper of the industrial robot. It is possible to use ferrules in which the parts forming the connecting pins do not consist of wires surrounded by a sleeve, but of metal tabs.
  • Fig. 6 shows the underside of a cooking appliance, such as the mounting plate 104 for a stove or a hob, which contains four hot plates 11 of the type described above. Their connectors 75 are inserted into a connector block 105, which has the basic shape of a cross with the connectors on its four end faces.
  • the connections can contain clamping elements, as described in connection with FIG. 2, but which are only intended for the introduction of the connections 58 from the hotplate, while the supply wires 96 to the household network or the controllers of the hotplate contain in a flexible multi-core cable 106 protruding from the center of the terminal block 105.
  • connection block 105 is attached to the mounting plate 104 in the center between the four hot plates 11, so that there is a minimal distance from the hot plates, so that the connection to the block 105 can be made with relatively short connecting lines 58.
  • connection block 105 and the connection block 109 are attached to the mounting plate and connected to one another by the prefabricated cable 106.
  • the hot plates 11 can now be automatically inserted into the openings in the mounting plate 104 from above.
  • the connections are then completed by inserting the connection pieces 75 into the terminal block 105. It is particularly advantageous that there is no uninsulated part on the underside, so that an insulating cover for the underside of the cooking appliance can be dispensed with if necessary.

Landscapes

  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Insulated Conductors (AREA)
  • Baking, Grill, Roasting (AREA)
  • Multi-Conductor Connections (AREA)
  • Cookers (AREA)
  • Organic Insulating Materials (AREA)
  • Table Devices Or Equipment (AREA)
  • Massaging Devices (AREA)
  • Resistance Heating (AREA)
  • Paints Or Removers (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Saccharide Compounds (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Glass Compositions (AREA)
  • General Induction Heating (AREA)
  • Connecting Device With Holders (AREA)

Claims (10)

1. Plaque de cuisson électrique comprenant un corps (12) et un recouvrement inférieur (24), ainsi qu une pièce isolante (51) faisant saillie au-delà du recouvrement pour permettre le passage traversant des raccordements électriques (58, 81) de la plaque de cuisson à travers ce recouvrement, plaque dans laquelle des conducteurs flexibles de raccordement (58), isolés pour résister à la chaleur et suffisamment longs pour que leur pièce de raccordement (75) se trouve en dehors de la zone de la plaque de cuisson électrique (11), gagnent une pièce commune de raccordement (75) montée à mouvement libre; et dans laquelle les extrémités (90) des conducteurs flexibles de raccordement (58) sont réalisées en vue d'être insérées dans un culot de raccordement (91, 105), caractérisée par le fait que la pièce de raccordement (75) présente des dispositifs de retenue qui maintiennent les extrémités (90) des conducteurs flexibles de raccordement (58) alignées parallèlement les unes aux autres, à la manière de broches ou languettes de raccordement; et par le fait que les extrémités (90) traversent de part en part la pièce de raccordement (75), dont elles dépassent sur le côté raccordement.
2. Plaque de cuisson électrique selon la revendication 1, caractérisée par le fait que les dispositifs de retenue ou les extrémités sont, respectivement, réalisés ou agencés de telle sorte qu'ils puissent être introduits seulement dans une position dans le culot de raccordement (91, 105).
3. Plaque de cuisson électrique selon la revendication 1 ou 2, caractérisée par le fait que la pièce de raccordement (75) renferme des canaux (83) dans lesquels les extrémités (90) des conducteurs flexibles de raccordement (58) sont introduites et sont bloquées et fixées par déformation de l'extrémité (90), les canaux ménagés dans les pièces de raccordement (75) consistant, de préférence, en des orifices (83) pourvus d'un décrochement interne (86) destiné à l'engagement d'un décrochement correspondant à proximité de l'extrémité des conducteurs flexibles (58) de raccordement électrique.
4. Plaque de cuisson électrique selon l'une des revendications précédentes, caractérisée par le fait que les conducteurs flexibles de raccordement (58) consistent en des cordons dont les extrémités (90) sont entourées par des douilles extrêmes multibrins (88), ces douilles extrêmes multibrins (88) étant de préférence amenées à leur forme définitive après leur introduction dans les canaux (83), et la pièce de raccordement (75) renfermant en particulier des évidements (87) dans lesquels des parties des douilles extrêmes multibrins (88) pénètrent par suite de la mise en forme de ces douilles extrêmes.
5. Plaque de cuisson électrique selon l'une des revendications précédentes, caractérisée par le fait que le culot de raccordement (91) coopérant avec les extrémités (90) présente des éléments de coincement élastique (93) destinés à saisir et à retenir fermement les extrémités (90) et, de préférence, des conducteurs d'alimentation provenant du réseau électrique, les éléments de coincement élastique étant de préférence autobloquants pour les conducteurs d'alimentation, mais non autobloquants pour les conducteurs flexibles de raccordement (58).
6. Plaque de cuisson électrique selon l'une des revendications précédentes, caractérisée par le fait que la pièce isolante (51) de passage traversant est insérée dans un orifice ménagé dans le recouvrement (24), et présente des canaux (57) par lesquels s'étendent les raccordements électriques (58, 81) de la plaque de cuisson; par le fait que la pièce (51) de passage traversant renferme au moins des éléments d'un dispositif de positionnement (101) pour positionner axialement les conducteurs électriques de raccordement (58, 180) dans les canaux; et par le fait que la pièce (51) de passage traversant se compose de préférence de deux parties complémentaires, qui forment entre elles les canaux (57).
7. Plaque de cuisson électrique selon la revendication 6, caractérisée par le fait que le dispositif de positionnement renferme une jonction (100) entre les conducteurs flexibles de raccordement électrique et un conducteur (81) de connexion de la plaque de cuisson, ladite jonction dépassant latéralement au-delà des conducteurs respectifs de raccordement ou de connexion, et étant logée dans un évidement (101) de la pièce (105) de passage traversant.
8. Plaque de cuisson électrique selon la revendication 6 ou 7, caractérisée par le fait que l'isolation (82) des conducteurs flexibles (58) de raccordement électrique s'engage dans les canaux (57) de la pièce (51) de passage traversant.
9. Plaque de cuisson électrique selon l'une des revendications précédentes, caractérisée par le fait que le culot de raccordement (105) consiste en un bloc de raccordement qui est installé sur un appareil de cuisson électrique (104), et présente des raccordements enfichables pour les pièces de raccordement (75) de plusieurs plaques de cuisson électrique (11).
10. Plaque de cuisson électrique selon la revendication 9, caractérisée par le fait que le bloc de raccordement (105) est relié, par l'intermédiaire de conducteurs flexibles (106), à un bloc de jonction (109) installé, de préférence, rigidement d'un côté de l'appareil de cuisson électrique.
EP83107990A 1982-08-25 1983-08-12 Plaque de cuisson électrique Expired EP0102015B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/411,458 US4467181A (en) 1979-08-17 1982-08-25 Electric hotplate
US411458 1982-08-25

Publications (3)

Publication Number Publication Date
EP0102015A2 EP0102015A2 (fr) 1984-03-07
EP0102015A3 EP0102015A3 (en) 1985-04-03
EP0102015B1 true EP0102015B1 (fr) 1987-09-23

Family

ID=23629012

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83107990A Expired EP0102015B1 (fr) 1982-08-25 1983-08-12 Plaque de cuisson électrique

Country Status (13)

Country Link
EP (1) EP0102015B1 (fr)
JP (1) JPS5962023A (fr)
AT (1) ATE29942T1 (fr)
AU (1) AU563410B2 (fr)
DE (1) DE3373860D1 (fr)
ES (1) ES525127A0 (fr)
FI (1) FI833017A (fr)
GR (1) GR82637B (fr)
NO (1) NO833050L (fr)
PT (1) PT77244B (fr)
TR (1) TR22134A (fr)
YU (1) YU44980B (fr)
ZA (1) ZA835942B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3425896A1 (de) * 1984-07-13 1986-01-23 E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen Elektrokochplatte
ES283397Y (es) * 1984-12-13 1985-12-16 I.T.W. Espana, S.A. Conector-retenedor de cable para electrodomesticos
DE3540815A1 (de) * 1985-11-16 1987-05-27 Ego Elektro Blanc & Fischer Elektrokochplatte sowie vorrichtung fuer deren anschluss
DE3540816A1 (de) * 1985-11-16 1987-05-21 Ego Elektro Blanc & Fischer Elektrokochplatte sowie vorrichtung fuer deren anschluss
DE3916725A1 (de) * 1989-05-23 1990-12-06 Ego Elektro Blanc & Fischer Elektrokochplatte

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB337578A (en) * 1929-10-15 1930-11-06 Charles Sykes Improvements relating to electric heating elements
DE814764C (de) * 1949-10-22 1951-09-24 Georg Maurer Elektrische Waermedrehplatte
FR1069861A (fr) * 1952-01-23 1954-07-13 Felten & Guilleaume Carlswerk Procédé pour l'exécution de connexions, longitudinalement étanches à l'eau et au gaz, dans les câbles symétriques
DE1157318B (de) * 1958-10-10 1963-11-14 Karl Fischer Elektrischer Rohrheizkoerper
FR1468918A (fr) * 1964-11-17 1967-02-10 Amp Inc Connecteur électrique
US3601783A (en) * 1969-03-05 1971-08-24 Amp Inc Electrical connector with spring biased solder interface
DE2442717A1 (de) * 1974-09-06 1976-03-18 Karl Fischer Elektrische heizplatte fuer elektroherde
DE2933350A1 (de) * 1979-08-17 1981-03-26 Fischer, Karl, 75038 Oberderdingen Elektrokochplatte

Also Published As

Publication number Publication date
PT77244B (de) 1986-02-12
AU563410B2 (en) 1987-07-09
EP0102015A3 (en) 1985-04-03
TR22134A (tr) 1986-05-20
FI833017A0 (fi) 1983-08-23
FI833017A (fi) 1984-02-26
ATE29942T1 (de) 1987-10-15
ES8406700A1 (es) 1984-07-01
NO833050L (no) 1984-02-27
EP0102015A2 (fr) 1984-03-07
JPH0351972B2 (fr) 1991-08-08
GR82637B (fr) 1985-02-07
YU44980B (en) 1991-06-30
ES525127A0 (es) 1984-07-01
ZA835942B (en) 1984-04-25
JPS5962023A (ja) 1984-04-09
DE3373860D1 (en) 1987-10-29
AU1833183A (en) 1984-03-01
PT77244A (de) 1983-09-01
YU174583A (en) 1985-12-31

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