EP0327849A2 - Plaque de cuisson électrique - Google Patents

Plaque de cuisson électrique Download PDF

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Publication number
EP0327849A2
EP0327849A2 EP89100859A EP89100859A EP0327849A2 EP 0327849 A2 EP0327849 A2 EP 0327849A2 EP 89100859 A EP89100859 A EP 89100859A EP 89100859 A EP89100859 A EP 89100859A EP 0327849 A2 EP0327849 A2 EP 0327849A2
Authority
EP
European Patent Office
Prior art keywords
plug
stop
hotplate
insulating body
piece
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Withdrawn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
EP89100859A
Other languages
German (de)
English (en)
Other versions
EP0327849A3 (fr
Inventor
Robert Kicherer
Felix Schreder
Stefan Reif
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 DE19883803806 external-priority patent/DE3803806A1/de
Priority claimed from DE19883840734 external-priority patent/DE3840734A1/de
Application filed by EGO Elektro Gerate Blanc und Fischer GmbH filed Critical EGO Elektro Gerate Blanc und Fischer GmbH
Publication of EP0327849A2 publication Critical patent/EP0327849A2/fr
Publication of EP0327849A3 publication Critical patent/EP0327849A3/fr
Withdrawn legal-status Critical Current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
    • H05B3/70—Plates of cast metal
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S206/00—Special receptacle or package
    • Y10S206/821—Stacking member

Definitions

  • the invention relates to an electric hotplate which has electrical connections to achieve simple assembly.
  • the electric hotplate advantageously has a hotplate body which has the connection means for connection to device lines.
  • connection means should in particular have connection sections which lead away from the underside of the hotplate body and belong to heating resistor connecting wires which are essentially fixed in their position relative to the hotplate body.
  • the connection sections are advantageously formed by wire section-shaped connection pins, which are inherently stiff under the usually occurring forces, but are also resiliently movable within small limits.
  • Electric hot plates are usually fastened in a hob such that they engage in a mounting opening of this hob, are supported against the edge of this mounting opening against support forces and on the underside of the hob to the devices belonging to it lines are connected.
  • This connection offers a very high level of reliability and security if it is at least partially designed as a welded connection or as a plug-in connection in such a way that a connection piece with an insulating body is assigned to the device lines, which is only connected to the electric hotplate or the electric hotplate when the electric hotplate is installed in the hob. is connected to the connection sections, however, such a connection cannot satisfy all the assembly methods available.
  • the invention is also based on the object to provide an electric hotplate of the type mentioned, which ensures very simple assembly and an uncomplicated electrical connection, especially when the device lines are provided at their ends with the simplest connecting elements.
  • an electric hotplate of the type mentioned in accordance with the invention in that the respective or each connecting pin has an especially separate plug-in piece which is advantageously enlarged several times in cross-section in one or two directions relative to the wire cross-sections of the connecting pin and one pre-assembled unit forms with the hotplate body.
  • the device lines which have, for example, mating connectors or only wire end sleeves at their ends as connecting members, and none at all need pre-assembled insulator connected only by a plug-in process in connection with the plug-in pieces, which ensure a very secure electrical connection due to their size and pre-assembled arrangement.
  • the plug itself could indeed be electrically conductively or mechanically rigidly connected by squeezing, a suitable one-part reshaping of the connecting pin, a further plug connection or the like.
  • a connection by spot welding is generally preferable, since this is used in the manufacture of the electric hotplate itself, i.e. before it is installed in the hob, can be carried out very easily.
  • the plug as a negative plug with a plug opening, as an essentially axially symmetrical or at least approximately round or cylindrical plug pin or the like, but there is a very simple configuration if the plug is designed as a flat tongue, the thickness of which only needs to be in the order of magnitude of the diameter of the connection sections and which is suitable as a commercially available standardized part for connection to mating plugs which can be attached to the device lines very easily, for example by squeezing.
  • the largest cross-sectional extent of these plug-in pieces is expediently approximately at right angles to the level of the cooking surface of the hotplate body, all the plug-in pieces expediently projecting the same distance and being arranged symmetrically to a common central plane parallel to the cooking surface.
  • At least one insulating body is provided for at least one plug-in piece, in particular for all plug-in pieces together, which can preferably be fitted from the free end of the plug-in piece or the plug-in pieces and therefore after the plug-in pieces have been attached to the Connection sections can be mounted so that it does not interfere with this attachment in any way.
  • This insulating body which could only be put on during the assembly of the electric hotplate in the hob, expediently forms a preassembled part of the hotplate body, i.e. that the insulating body is already at least partially placed on the respective plug-in piece or the connecting sections before the hob is installed in the hob and is secured in this position in a suitable manner against automatic or accidental loosening.
  • connection sections or the or the plug-in pieces or the or the insulating body by resilient or bending deformation of the connection wire or wires, by displaceable or pivotable bearings of at least one of these parts or by Similar measures can be transferred from a stacked position into an assembly or connection position, in which they lie deeper below the underside of the hotplate body and / or have a changed radial distance from the circumference of the hotplate body or from its central central axis.
  • the corresponding of these parts are expediently between the levels of the upper side, i.e.
  • limited bending zones for the transfer between the stack layer and the connection layer can be formed by weakened cross-sectional areas, by angled zones or the like .
  • This definition is usually formed by an insulating piece fixed in the underside of the hotplate body, for example by fastening to a lower end cover, which passes through the connecting wires and on the underside of which they are angled against the outer circumference of the hotplate body.
  • this mounting position is secured by at least one securing element, which securing can take place with respect to the hotplate body, with respect to the connecting pin and / or preferably with respect to the plug-in piece.
  • backup formed as a self-engaging snap member or the like.
  • the insulating body in its final assembly position expediently rests on the end face or on the outer circumference or on both of these surfaces of the outer flange edge of the hotplate body, with a small clearance from these surfaces is also conceivable.
  • the insulating body is blocked in both possible directions of movement approximately parallel to the connecting pins, so that it practically forms a substantially rigid support of the plug pieces with respect to the hotplate body, which is only brought into engagement when the electric hotplate is assembled are needed and before that the mobility of the plug-in pieces, in particular transversely to the plane of the cooking surface, is in no way impeded.
  • the connecting section of the hotplate expediently extends at most to the outer circumference of the hotplate body or at most to the inner circumference of the outer flange edge, preferably training according to DE-OS 35 40 816 are provided, to which reference is made for further details.
  • an electric hotplate designed in this known manner can optionally be described there NEN connection options or for the connection options described here can only be used in that plug-in pieces or insulating bodies are also attached.
  • connecting pins are relatively short, it is expedient to provide a wire or flat rod-shaped connecting section between the plug-in piece located outside the outer circumference of the outer flange edge or the hotplate body, the flat extension of which is expediently parallel to the cooking surface of the hotplate body, so that it forms a relatively easily bendable joint section transversely to the cooking surface.
  • This connecting section can easily be formed in one piece with the plug-in piece, for example as a stamped and bent part.
  • the respective pin protrudes relatively far over the outer circumference of the outer flange edge or the hotplate body or is designed in accordance with DE-OS 35 40 815, to which reference is made here for further details.
  • the connecting pin can overlap the plug piece over part of its length or to such an extent that it extends approximately to the actual plug section of the plug piece which is to be brought into engagement for producing the plug connection.
  • the plug-in piece has a particularly flat fastening section, to which the connecting pin is tangent.
  • the weld can be provided on a flat or side surface of the plug, so that the plug protrudes laterally only about its thickness beyond the terminal pin.
  • the plug-in has the recording of the weld spot on a stamped cam or a similar, knob-shaped or bead-shaped elevation.
  • the end of the connecting section or the connecting pin can be flattened by squeezing or the like, so that it has a smaller cross-sectional extent in one direction and a larger cross-sectional extent at right angles to it than the rest of the connecting wire, thus ensuring a particularly secure connection with the plug-in piece.
  • At least one clamping screw on the plug-in piece which advantageously projects into a plug-in hole of the plug-in piece, into which the connecting pin and / or the connecting member can be inserted overlapping one another and fixed with the clamping screw .
  • at least one connector pin or all connector pins of the electric hotplate can also be electrically connected in an advantageous manner.
  • At least one plug-in sleeve can also be used as an electrical plug-in connection for connecting electric hot plates, whereby electric hot plates are usually to be connected in two, three or four poles.
  • Such receptacles expediently have an electrically conductive receptacle body which creates a cable connection for the electrically conductive and mechanically secured connection to the electrical supply cable and, if appropriate, a plug-in part which adjoins this in the longitudinal direction and can be pushed onto a plug.
  • a rearward-facing or acting withdrawal stop is advantageously provided on the receptacle body. of the socket, for example secure against pulling out of an insulating body surrounding it or another of the components mentioned.
  • the receptacle body has a push stop which rigidly limits the plug-in movement of the plug-in sleeve in its push-on direction compared to another component, in particular a component separate from the plug, so that the plug-in sleeve can assume or take a precisely defined end position in relation to this direction of movement conversely, the further component, in particular the insulating body, can be placed on the receptacle in such a way that it assumes a precisely limited end position with respect to the latter.
  • the push stop is advantageously behind the front end of the plug part or behind the center of its length or even behind the entire plug part, so that it is provided outside the zone in which particularly high temperatures or thermal and / or electrical loads may occur. If at least one retraction stop acting in the opposite direction is preferably provided in addition to the advance stop, the plug sleeve can be secured in position in both opposite directions with almost no play and in a form-fitting manner with respect to the further component or to the further components.
  • the insulating body mostly serves to align the connecting wires of the electric hotplate provided with the plugs with respect to the hotplate body, for example in that the insulating body rests with alignment surfaces in the area of the underside on the hotplate body or on its outer flange edge.
  • the socket is also kept exactly aligned with the hotplate body or, conversely, the insulating body is not only secured against movements in the direction of the central axis of the hotplate body by having corresponding shoulder surfaces on the outer circumference of the Hotplate body rests, but it is also positively secured against movement in the opposite direction in that it is locked by the pushing stop of the plug-in sleeve.
  • the push stop can have a low, relatively hard elasticity, so that it deviates slightly due to the counter pressure of the counter stop, e.g. until the retraction stop has reached the stop position, the push stop resetting after relief, so that the further component having the counter stops is then prestressed and held free of play between the stops.
  • the push stop can, however, also be designed to be essentially rigid with respect to the plug-in sleeve, with in any case a slight longitudinal play of the plug-in sleeve between the two stop positions can also be provided for corresponding applications.
  • the receptacle is also suitable for electrical plug connections other than those of electric hot plates.
  • the respective stop is preferably formed in one piece with the plug-in sleeve body, all stops expediently in particular, all the feed stops are integrally formed on the socket body.
  • the respective stop can be formed, for example, by a simple, leg-shaped or web-shaped angling of the socket body, the respective stop expediently projecting outward beyond the outside of the outer delimitation planes of the plug part or lying completely outside the plug opening.
  • the advance stop can also by an anyway provided on the socket body, lying transversely to the direction of insertion and facing forward, for which the front edges of a clip-like, rear shaft end of the socket sleeve body are particularly suitable for enclosing the associated end of the insulating jacket of the connecting cable connected to the socket to form a structural unit serves.
  • the counter-stop for the advance stop or stops could indeed lie within the further component, namely in particular the insulating body, but the reaching of the stop position can be controlled particularly well if this counter-stop is formed by the rear end face of the insulating body or the like.
  • the counter-stop for the retraction stop is expediently located behind the center of the length of the insulating body, and it can be at a distance from the counter-stop for the advance stop or from the rear end face of the insulating body, which is at most as large as the material thickness that must be provided between the counter-stops in order to maintain sufficient strength on the insulating body.
  • the advancement stop and the retraction stop are on opposite sides, in particular flat sides, of the plug-in sleeve, then in particular the retraction on blow by slight tilting movements of the socket in a simple manner into its stop position in the manner of a latch or snap member.
  • the abovementioned stops lie opposite one another on the same side of the plug-in sleeve, the engagement can be facilitated by transverse movements, in particular when the single push-in stop, for example, is offset laterally with respect to the withdrawal stop or with respect to the longitudinal center plane of the plug-in sleeve. In any case, however, the stop or the stops lie laterally within the side edges of the plug-in part and / or laterally outside the cable connection shaft.
  • the socket body is expediently formed as a stamped and bent part made of sheet metal, so that the plug part forms a longitudinal gap on one side, which is delimited by the mutually facing longitudinal edges of two sleeve or bending tabs.
  • these bending tabs can form elongated contact springs, for example by flanging the longitudinal edge regions, which slide or abut the connector with a relatively high spring pressure.
  • flanges usually only have a linear contact system, which can lead to high surface pressures and to an undesirably difficult stiffness when plugging on, which is particularly disadvantageous when.
  • a plurality of receptacles combined to form a structural unit are to be plugged onto a corresponding number of plugs at the same time, since the stiffness can then be increased by a factor of this number.
  • the contact springs are leaf or strip-shaped and therefore form a correspondingly wide sliding or contact surface for the flat plug.
  • the total width of this sliding or contact surface on one side of the plug-in part can be in the order of magnitude, for example Half of the width of its flat side.
  • the contact springs are set back relative to the front and / or the rear end of the plug-in part or are shorter than the plug-in part, and their effective contact surface for the plug can have a length that is less than half the length of the Plug-in part.
  • the respective contact spring forms an insertion slope for the flat plug at the front end, which e.g. can be achieved in that the front end integrally connects to the jacket of the plug-in part, while both side edges of the contact spring are exposed and a side edge can be formed directly by the longitudinal edge of the associated sleeve tab.
  • a particularly advantageous development of the subject matter of the invention is that contact springs which are opposite one another and abut on sides of the plug which face away from one another are provided, with two contact springs each expediently lying opposite one another in pairs and having approximately the same width.
  • the opposing contact springs expediently have sliding or contact surfaces of different lengths, one contact spring being formed by an embodiment which is flatly curved in a side view, forming an approximately only linear sliding or contact surface which is continuous over its width, and the sections rising at an acute angle, while the other Contact spring has a longer, approximately rectilinear apex section which merges into end sections angled at an obtuse angle.
  • contact springs are expediently located in the area of the sleeve tabs, while the contact springs with an elongated apex section advantageously connect on both sides directly via cut-free punched edges to the side edges of the withdrawal stop.
  • This retraction stop expediently protrudes to its free, rearward end at an acute angle over the associated outside of the plug-in part, its front and rear ends may coincide essentially with the associated ends of the adjacent contact springs, so that the aspect ratios specified for these also the withdrawal stop apply.
  • the plug-in part is formed by a front and a rear, each clamp-like jacket part, which are connected to one another via a plurality of longitudinal webs spaced apart over the circumference or whose connecting part has a plurality of longitudinal slots distributed over the circumference, lateral, to the Flat longitudinal webs lying on the narrow sides of the plug-in part are narrower than these narrow sides and can only be slightly wider compared to the thickness of the plug.
  • the longitudinal webs on the flat sides are formed exclusively by the contact springs.
  • the plug-in sleeve can have a spring cam which projects into its plug-in opening between its ends and which engages in a corresponding recess or opening in the plug.
  • this spring cam is not on the side of the sleeve tabs opposite the Plug part, but provided in the area of the sleeve tabs, it nevertheless lies in the longitudinal median plane of the plug part by appropriate shaping of the longitudinal edges of these sleeve tabs.
  • the longitudinal slot between the sleeve tabs does not have to be displaced laterally with respect to the longitudinal center plane over its entire length for this purpose, it is only offset in the area of the spring cam, while the longitudinal sections of the longitudinal slot which adjoin to the front and / or rear are provided in this longitudinal center plane.
  • This also creates a tab-shaped projection that supports or forms the spring cam and projects laterally, which ensures particularly good spring properties.
  • the spring cam is provided in the area or on a contact spring and is preferably offset slightly forwards from its apex or from the middle of its length, so that it has fewer cross-sections in the direction of the insertion end of the plug-in sleeve Angle degrees is inclined and directly adjoins the insertion slope.
  • the electric hotplate 1 has a one-piece cast-iron body 2, which forms a flat annular cooking surface 3 at the top, which in the case of the performance shown as an automatic hotplate has an opening in the center for receiving a temperature sensor and in In the case of power-controlled normal hot plates, it is closed continuously.
  • the hotplate body forms a circumferential collar 4 on the outer circumference and, on the other hand, is offset slightly inward on the underside by a protruding outer flange edge 5 and is generally rotationally symmetrical about its central axis 6.
  • one or more heating resistors 7 in the form of heating coils are laid in the underside of the hotplate body 2 and are embedded in a mineral, pressed insulating compound in grooves running spirally about the central axis 6.
  • This ring-shaped, heated zone is delimited on the inner circumference by an inner flange edge 8 which projects less far than the flange edge 5, whereby in the case of hotplate bodies with a closed surface in the center a one-piece center pin protrudes at the bottom, which then instead of the flange edge 8 for fastening a lower cover 9 serves in the form of a sheet metal cover, which is supported with its outer ring edge 10 on the end face of the flange edge 5 and secured with screws 11 or the like.
  • the profiled cover 9 forms depressions 12, 13 on the underside, of which an approximately long-round depression 13 is provided approximately symmetrically to an axial plane 14 of the hotplate body 2.
  • a support ring 15 is fastened which is supported on the circumferential collar 4 and which, in the assembled state of the electric hotplate 1, engages over the edge of the assembly opening in the hob and is tensioned against the top of the hob.
  • Each heating resistor 7 generally has a short end pin 16 projecting downward from the insulating compound at both ends, which is used for connection to an associated connecting wire 17, which is also part of the preassembled electric hotplate 1.
  • Each connecting wire 17 has a section 18 lying inside the cover 9, connected to the associated end pin 16, for example by spot welding, and a connecting pin 19 lying outside the cover 9 or the hotplate body 2, essentially on the underside thereof, and is from the end pin 16 to the end of the pin 19 throughout in one piece.
  • an insulating piece 20 made of ceramic material, for example steatite is inserted into a corresponding window-like opening 23 of the cover 9 and has one for each connecting wire 17 Has passage opening.
  • each connecting wire 17 is angled once, either in opposite or the same directions and thereby fixed at right angles to the cooking surface 3.
  • the outer or lower bend 22 can form a hinge zone for the associated connecting pin 19 with a hinge axis that is approximately perpendicular to the axial plane 14.
  • the insulating piece 20 has a groove-like cutout 25 for each connecting wire 17 or pin 19, these cutouts 25 connecting to a receiving recess 27 which is formed in the underside of the cover 9 and also in the lower end face of the flange edge 5 and in the circumferential part of the ring edge 10 adjacent in the associated area is provided.
  • all the connecting pins 19 can be arranged, at least in a stacked position, despite being led out over the outer circumference of the flange edge 5 such that they do not protrude beyond the plane of the underside of the hotplate body 2 or the cover 9 or its ring edge 10, the ring edge 10 expediently being the deepest Area of the cover 9 and the entire, in the stacked state electric hotplate forms.
  • a positioning member 28 in the underside of the electric hotplate 1 for the precise rotational alignment of the electric hotplate 1 during assembly, and this positioning member 28 is expedient due to a groove-like cutout in the end face of the flange edge 5 and a stamped projection formed in the ring edge 10, which engages in this cutout on the one hand and on the other hand a slightly smaller one compared to this cutout open positioning cutout limited.
  • the cover 9 is also precisely defined in its rotational position with respect to the hotplate body 2.
  • a plug 29 is fastened, the plug direction of which is approximately radial to the electric hotplate 1 or approximately parallel to the axial plane 4 and is directed outwards.
  • Each of the essentially flat plug-in pieces 29 is fastened with a lateral flat surface laterally to the periphery of the associated connecting pin 19 by spot welding, so that it extends in plan view of the electric hotplate with its rear end approximately to the outer circumference of the electric hotplate or the support ring 15.
  • the plug pieces 29 are formed by tabs.
  • Each plug 29 is assigned a mating connector 100, in particular a plug-in sleeve, which is attached to the associated end of a device line 34 via a crimp connection 35 and forms a plug opening 36 for receiving the plug 29.
  • an insulating body 32 is indicated by dash-dotted lines, which expediently surrounds all the plug-in pieces 29 essentially over the entire circumference and at least over part of their length, so that a connector 31 preassembled with the electric hotplate 1 with all the electrical connecting parts is formed in the form of plug pieces 29.
  • a ground connection that may be provided is attached separately to the cover 9, for example.
  • the insulating body 32 thus forms a housing 37 which accommodates at least the rear ends of the plug-in pieces 29 and a substantially flatter extension 38 which adjoins this at the rear and which is provided with a gradation such that it extends both on the outer circumference of the flange edge 5 and on the underside in the area of the Ringran of 10 can concern.
  • the insulating body 32 is not yet in contact with the hotplate body 2 in the illustrated position, but rather in a different securing position. From the stack position, the plug pieces 29 are pivoted downward together, for example, so that the connecting wires 17 become completely contact-free with respect to the hotplate body 2 and the cover 9, and in this connection position the insulating body 32 then lies against the electric hotplate 1 in the manner described.
  • Each plug-in piece 29 has a securing member 39, which is bent out of it laterally in one piece, in the form of a barb-like snap tongue which projects obliquely to the rear and which is assigned a latching or latching opening or shoulder in the insulating body 32.
  • the securing members 39 come into the latching openings when the insulating body 32 has reached the final or final assembly position, and at the same time the attachment 38 lies on the electric hotplate 1 in the manner described so that the insulating body is blocked in both directions or can even be clamped between the electric hotplate 1 and the plug pieces 29.
  • the receiving recess 27, in which the connecting wires 17 or the connecting pins 19 lie in the stacked position, is chosen so wide that it can accommodate any number of connecting pins 19 that occur, namely, for example, two to four adjacent connecting pins 19.
  • Each plug 29 is attached to the associated pin 19 with a spot weld 40.
  • each connector pin 19 is provided between the insulating piece 20 or the bend 22 with at least one bend 41, which is advantageously obtuse in the side view according to FIG. 2 such that the plug 29 in the stacked position between the delimitation levels Electric hotplate 1 lies and is aligned radially to the central axis 6.
  • a bend 41 is provided in the region of the end face of the flange edge 5 or the ring edge 10 and a bend laterally in the region of the rear end of the plug-in piece 29.
  • This angled portion 41 according to the invention can also be provided in the case of hot plates designed differently than the electric hot plates described, e.g. for electric hotplates, in which no connector is provided at the end of the connecting pins, but these connecting pins end freely.
  • the bend 41 suitably lies between the bend 22 and the end of the connecting pin 19 such that it can be pivoted approximately into the region of the end face of the flange edge 5. However, it can also lie further inwards or outwards with respect to this edge flange 5 radially to the central axis 6, as can be seen in FIGS. 4 to 17, but its radial distance from the flange edge 5 is only approximately in the order of its thickness.
  • the angle of the bend 41 is expediently chosen so that when the connecting wire 17 is pivoted against the underside of the hotplate body, the section of the connecting pin 19 lying radially outside the bend 41 runs obliquely in the direction of the plane of the cooking surface 3, while the one lying radially inside the bend 41 rectilinear section of the pin 19 to Angle 22 is provided parallel to the cooking surface 3 or to the underside of the hotplate body 2 and is completely sunk inside the underside of the electric hotplate 1.
  • the angle of the bend 41 is chosen so that when the connecting wire 17 is pivoted into its functional position away from the underside of the electric hotplate 1, the free end section of the connecting pin 19 or the plug 29 is at least approximately or essentially parallel to the plugging direction Cooking surface 3 is aligned.
  • an angle deviating at least slightly, for example approximately +/- 10 °, can also be provided.
  • a particularly advantageous development of the subject matter of the invention can also consist in that at least one, in particular all, plug-in pieces 29 are arranged instead of standing in such a way that their larger cross-sectional extent is provided approximately parallel to the cooking surface 3, the respective plug-in piece 29 expediently in a stacked position and / or in Installation or functional position is parallel to the cooking surface 3, so that, for example, all the plug pieces 29 are provided in a common plane.
  • Intermediate stages or intermediate layers can also be advantageous.
  • Such an arrangement is particularly suitable for those electric hotplates which have a small number of connections, for example only two or three connections, it being possible to save a considerable part of the relative installation height through this design.
  • FIGS. 4 to 25 the same reference numerals are used for corresponding parts as in the other figures, but each with different letter indices, the corresponding descriptions correspondingly applying to corresponding parts.
  • the housing 37a of the insulating body 32a has a through opening adapted to its cross-section for receiving each plug-in piece 29a, which extends into the area of the extension 38a and extends backwards over the rear of the housing 37a also continues as a trapezoidal groove, so that when the insulating piece 32a is placed, the plug pieces 29a are first inserted into these grooves transversely to their plugging direction and then the insulating piece 32a can be displaced into its end position approximately parallel to the plugging direction of the plug pieces 29a by relative displacement until the securing members 39a engage and the stepped surface of the extension 38a rests on the electric hotplate shown only indicated.
  • the mating connector 100 can also be provided with the or an insulating body 48, which expediently surrounds the metallic or current-carrying parts of the mating connector essentially over the entire circumference and / or over the entire length.
  • this insulating body instead of designing this insulating body so that it also forms the insulating body for the plug-in pieces, the connecting pins or the like., Its design is expediently chosen such that it forms a part which essentially joins the insulating body 32a without gaps and also itself as a plug-in part for the plug connection can be formed with the insulating body 32a.
  • the insulating body 48 overlaps the housing 37a of the insulating body 32a over the entire circumference with an edge flange 49, wherein the two insulating bodies 32a, 48 also butt against one another and together form an overall housing, the housing parts of which are secured against relative movements by the plug-in pieces 29a engaging in the mating connector or corresponding suitable securing members. As a result, the live parts of the connector are also protected against splash water and similar loads. As shown in FIG.
  • the plug-in pieces 29 have angled leg tongues at their rear ends, with which they bear against the rear of the housing 37a or a corresponding counter surface, so that the insulating body 32a is limited in its plug-on direction in the end position by these leg tongues, while being locked in the opposite direction against movement by the securing members 39a.
  • the shoulder 38b increases on its side facing away from the step 42, over which the housing 37b also projects exclusively, in thickness approximately to the height of this housing 37b, so that the grooves 43b mentioned increase in depth towards the housing 37b.
  • the grooves 43 run out in the case of the embodiment according to FIGS. 4 to 6 in front of the rear end of the extension 38a, in the case of the embodiment according to FIGS. 8 and 9 they extend to the rear end of the extension 38b.
  • the actual plug-in sections of the plug-in pieces 29, 29a project freely over the front of the insulating piece 32, 32a or the housing 37, 37a, in the case of the design according to FIGS.
  • the mating connector 100 of the device lines 34b are indicated by dash-dotted lines, and it can be seen that the insulating body 32b forms a funnel-like insertion mouth for each mating connector 100, through which the mating connector 100 easily finds its exact plug position and also in the plugged-on state is positively secured against lateral movements.
  • the plug 29b has on its shaft section also provided with the securing member 39b a type of raised cam 44, which in the exemplary embodiment shown is formed by a bead lying transversely to the longitudinal direction of the connecting pin 19b, on both sides of which the shaft section forms securing members 39b can.
  • the shaft section lies in the same plane as the actual plug-in section of the plug-in piece 29b.
  • each plug-in piece 29c is provided with a laterally bent-out connecting leg 46, and the end of each connecting pin lgc is formed by squeezing up to its end face as a flat 45 which is parallel to the connecting leg 46 and is approximately the same Width like this one has.
  • the pin lgc or the flat 45 is located nevertheless expediently also on the side of the plug 29c, although their connecting surface is provided transversely to the plane of the plug 29c.
  • the connecting section 47 designed in the manner of a flat-band-shaped connecting lug is placed with its flat side facing the hotplate body 2d against the connecting pin 19d and connected to the latter via a spot weld.
  • the connecting section 47 expediently has the bends 41d, while the connecting pin 19d is continuously straight from the bend 22d to its end face.
  • the receiving recess 27c or 27d in relation to the projection 38c or 38d can also be designed in such a way that this projection engages in the receiving recess 27 and rests on the bottom surface thereof, so that the insulating body 32c or . 32d is additionally secured against lateral movements and can also be relatively high.
  • a separate insulating body 32e is provided for each plug-in piece 29e, which can be designed in the manner of a tube with a flat cross section. This means that one and the same insulating body 32e can be used regardless of how many connections an electric hotplate has.
  • the mating connector 100 receiving the plug 29e lies essentially entirely within the insulating body 32e.
  • the insulating body 32e can also be a component preassembled with the mating connector 100, which is only pushed onto the plug 29e when this mating connector 100 is plugged on.
  • the insulating body 32e could also be divided in the longitudinal direction, similar to that described with reference to FIG. 4, so that one part is preassembled with the plug 29e, while the other part is preassembled with the mating connector 100 and these two parts are blunt or interlocking in the installed position bump into each other.
  • the securing member 39e is provided on the mating connector 100 or bent out of it.
  • the insulating body 32e can be plugged onto the mating connector 100 in such a way that it is secured against movements in both possible directions in a substantially positive manner.
  • a plug-in socket is provided in the insulating body 32f as a plug-in piece 29f, the socket bore of which is designed both for receiving the end of the connecting pin 19f and for receiving the associated end of the device line.
  • the plug-in piece 29f is provided with a radial clamping screw 39f, which simultaneously secures its position and clamps the flat 45f as well as the end of the device line.
  • the housing 37f of the insulating body 32f has on both sides of the clamping screws 39f protruding projections in the form of lateral webs, so that the heads of the clamping screws 39f accessible between them are shielded against metallic contact.
  • the stacking aid 101 has a multiplicity of pallet plates 110 to be arranged one above the other and relatively soft or elastic inserts 111 to be arranged between adjacent stacking layers and is essentially carried by a lower carrying pallet 112.
  • the multi-layer stack 117 of stack layers 118 which each accommodate a plurality of electric hotplates in a grid of rows and rows, is located within the packaging sleeve 113.
  • the respective pallet plate 110 forms a flat shell 119, adapted to this, for receiving each electric hotplate, with a shell bottom 120, the underside of which serves as a support surface 121 for support against the next stacking layer underneath and whose shell jacket 122 essentially accommodates the associated electric hotplate, the Shell openings 123 are on top.
  • the depth of the flat shells 119 or, in contrast, the same height of each pallet plate 110 is significantly smaller than that Installation depth of the associated hotplate, the installation depth of which is essentially defined by the distance between its underside and the support ring.
  • Each pallet plate 110 forms a central plate field 126 which receives the flat shells 119 and is delimited on the outer circumference by a peripheral edge 127.
  • a circumferential depression in the form of a groove 128 adjoins the peripheral edge 127, the groove bottom 129 of which lies in the plane of the shell bottoms 120.
  • the peripheral edge 127 forms an outward-facing edge flange 130.
  • a slip guard 131 is expediently provided between adjacent stack layers, which can be formed by the corresponding properties of the inserts 111.
  • the stacking aid 101 essentially serves for stacking electric hot plates 1h which are designed similarly to those according to FIGS. 1 to 3, but have not yet been preassembled with an insulating body.
  • Electric hot plates 1h lying one above the other are axially aligned with one another, and each connecting piece 31h lies between the delimitation planes of the associated electric hotplate 1h adjacent to the latter essentially within the associated pallet plate 110.
  • a groove-like recess or depression can be provided in the shell casing of the associated flat shell, into which the connecting pins then engage in such a way that the connecting pieces 31h or the associated plug-in pieces lie outside of this flat shell.
  • the electric hot plates 1h are stacked in such a way that all the cooking surfaces are at the top, according to FIG. 20 the arrangement is reversed, namely in such a way that all the cooking surfaces are at the bottom, which, according to FIGS. 4 to 16, also corresponds to the mounting position of the Electric hot plates equals.
  • the connecting pieces 31i each lie relatively high above the tray bottom of the pallet plate 110 carrying the associated electric hotplate 1i and protrude freely between two stacked pallet plates 110.
  • the arrangement is provided in such a way that electric hotplates 1k which are directly stacked one above the other are offset eccentrically, approximately in the direction of a diagonal of the stacking aid 101, which is essentially rectangular in plan, by an amount approximately equal to that Distance between the insulating piece 26k and the outer circumference of an electric hot plate corresponds.
  • the electric hot plates 1k of each second stacking layer, which are stacked one on top of the other are in turn aligned with one another.
  • the electric hotplates 1k are arranged such that their connecting pieces 31k point in the direction in which superimposed electric hotplates are offset from one another in the manner described, the connecting pieces 31k pointing in opposite directions from electric hotplates 1k lying directly one above the other and offset in this way.
  • an opening 132 of corresponding size is provided in the pallet plate lying above or supported on it, which opening is in each case directly adjacent to the outer circumference of a flat shell 119 of this overlying pallet plate and in which the connecting piece 31k of the electric hotplate 1k below can engage.
  • the connecting pieces 31k can be connected to the electric hotplates 1k in a fully assembled state without an increase in the stack, even though the connecting pieces 31k protrude above the undersides of the electric hotplates 1k located above.
  • a stacking aid 101 is indicated, with which the electric hot plates 1m can be stacked in a space-saving manner, despite the pre-assembled insulating body 32m, so that no greater stack height than that required by the height of the hotplate body plus the material thickness of the lower cover 9m is required .
  • the insulating body 32m is only partially plugged onto the plug-in pieces 29m in such a way that it lies completely outside the flange edge 5m and is possibly supported with its shoulder 38m on the outer circumference of this flange edge 5m.
  • the entire connecting piece 31m, including the insulating body 32m can lie between the upper and lower delimitation levels of the electric hotplate 1m.
  • the electric hot plates Im are stacked according to FIG. 24 with a cooking surface 3m lying on top and lying one above the other in the same axis.
  • the electric hot plates In are stacked in a similar manner with the cooking surfaces lying at the bottom, the insulating bodies 32n likewise being only partially plugged onto the plug-in pieces 29n and therefore in a stacked position between the delimitation levels of the respective associated electric hotplate or between the delimitation levels of their installation depth lie.
  • a receptacle 100 according to FIGS. 26 to 33 can also be designed as a mating connector, in conjunction with two or more flat, identical receptacles arranged parallel to one another, plugged onto plug 202 in the form of essentially flat tabs and from an insulating body 203 so to be sheathed at least in its front area, so that the plugs 202 and the corresponding sections of the receptacles 100 are sheathed in mutually separate insulating chambers in such a way that the plugs 202 are completely inside the insulating body 203 lie, whereby the desired plug connection 204 is created as an electrical connection of an electric hotplate 205.
  • the electric hotplate 205 is used for mounting in a hob 206 and has a cast-iron hotplate body 207, a support ring 208 projecting over its outer circumference for support on the top of the hob 206, on the underside an end cover 209 made of sheet metal, an insulated sleeve fastened in this recess 211 for the passage of connecting wires 210 and on the hotplate body 207 on an outer, through the hob 206 in the region of an opening, jacket-shaped flange 212 on whose end face remote from the cooking surface 213, the end cover 209 rests.
  • the procedure according to the invention is expediently such that the electric hotplate 205 is initially placed with its cooking surface 213 down, possibly with further hotplates to be fastened in the same hob 206, on a support surface and then the hob 206 is placed in the reverse position on the flange edges 212 of the electric hot plates and is braced with them so that the support rings 208 of the electric hot plates 205 are supported under tension on the use side of the hob 206.
  • the plug sleeves 100 are connected to the plugs 202 forming a self-contained structural unit with the respective electric hotplate 205.
  • each electric hotplate 205 are flat components which are elongated in their plug-in direction and which, with the rear end, form a plug shaft 214 on which the free end of the associated connecting wire tes 210 is fixed laterally overlapping, for example by spot welding, so that the plug 202 lies completely outside the outer periphery of the flange rim 212 or the hotplate body 207 or the support ring 208 and around a bending point of the connecting wire 210 in a region of the insulating sleeve 211 in a to the cooking surface 213 is pivotable about a right-angled plane.
  • the plug member 215 is provided approximately in the middle of its width and the middle of its length with a plug opening in the form of a circular opening and has a short plug tip 217 lying in front of the plug opening 216, which by chamfering both the broad sides and the narrow edges of the plug member 215 is formed.
  • the longitudinally flat rectangular insulating body 203 has essentially flat end surfaces 218, 219, which are perpendicular to its longitudinal direction and are penetrated by a number of straight receiving channels 220 for the plug connections, corresponding to the number of plugs 202 and / or receptacles 100.
  • narrower, groove-shaped recesses 221 are provided, which extend from the front end surface 218 to close to the rear end surface 219 and whose transverse wall forming the rear end is suitable in each case as a counter stop 222 for a stop of the plug connection 204.
  • the counter stop 222 or the recess 221 is located approximately in the middle of the width of the associated side wall of the receiving channel 220 and has a smaller width than this.
  • the cross-section of the respective receiving channel 220 is relatively closely matched to the outer cross-section of the associated plug-in sleeve 100, so that it can engage with almost no backlash, the widened section of the plug 202 also being correspondingly adapted to the associated cross-sectional dimension of the receiving channel 220.
  • the associated end of the connecting wire 210 can then lie in one of the recesses 221 at the latest after the plug connection 204 has been produced.
  • the plug connection 204 or the insulating body 203 also has means for alignment with the hotplate body 207, which in the exemplary embodiment shown is formed by a stepped alignment shoulder 223 on the upper side of this insulating body 203, starting from the front end surface 218 and extending over the width of the insulating body 203 are. 26, in the fully assembled state, the outer circumference of the outer flange edge 212 engages in such a way that the lower shoulder surface of the alignment shoulder 223 engages over the electric hotplate 205 on the underside of the end cover 209, while the one lying transversely thereto Shoulder surface can rest on the outer circumference of the flange rim 212.
  • the insulating body 203 which is arranged approximately parallel to the cooking surface 213, underneath the hob 206, is thus partially above the underside of the hotplate body 207 or the end cover 209 and projects outward from the outer circumference of the electric hotplate 205 with most of its length.
  • the insulating body 203 is preassembled or assembled with the plug sleeves 100 and the associated supply cables 225 carrying these plug sleeves 100 at the respective ends, after which the insulating body 203 is pushed as far as its plug direction arrow 224 onto the plugs 202 until the plug 202 becomes hers Have reached the plug position in the receptacles 100 and end sections of the connecting wires 210 adjoining the plugs 202 lie within the receiving channels 220.
  • the insulating body 203 has then reached the above-mentioned mounting position, the receptacles 100 being able to protrude freely from the rear end surface 219 of the insulating body 203.
  • the plug sleeves 100 are secured against the insulating body 203 in the plug direction arrow 224 and against this direction by stops, while they are secured against the plugs 202 by friction locking and by resilient detent. Only by these means can the insulating body 203 be secured in its assembled position.
  • the assembly can also be carried out in such a way that the insulating body 203 is first pushed onto the plug 202 and the connecting wires 210 without plug sleeves until the plug members 215 protrude beyond the rear end face 219. Then the receptacles 100 are separately or at the same time plugged onto the plug members 215, after which the insulating body 203 is either pushed back into the assembly position described with reference to FIG. 26 or left in the position recognizable from FIG. 29, in the latter case then insulation of the connecting wires 210 is given approximately over its entire length, which is exposed below the electric hotplate 205.
  • the insulating body 203 and / or the insulating sleeve 211 suitably consists of a hard ceramic material, for example steatite.
  • the respective receptacle 100 is formed according to FIGS. 30 to 33 by a one-piece receptacle body 228 made of sheet metal, the front end of which is shaped into a flat sleeve-shaped plug part 229 which is slotted longitudinally over its entire length and which has an acute rearward width at its rear end tapered transition section 230 merges.
  • this transition section 230 which is considerably shorter than the plug-in part 229, merges into a strand clip 232 which is approximately elliptical in cross-section of a cable connection shaft 231 which is tapered in relation to the width of the plug-in part 229, the rear end of which forms a bending clip 233 which leads directly to the rear end of the stranded clip 232 connects, is wider compared to this, but has a smaller width than the width of the plug-in part 229.
  • the heddle clip 232 is used to clasp the bundle to the cable braid 227, which protrude freely above the cable sheath 226 of the supply cable 225 made of insulating material, the front end of the cable sheath 226 being enclosed by the bending clip 233.
  • the clip legs of the respective clip are directed inwards and are thereby clawed in the cable strands 227 or in the cable sheath 226.
  • the longitudinal slots between the clamp legs of both clips and the only continuous longitudinal slot of the plug-in part 229 lie in a common longitudinal center plane.
  • the plug-in part 229 forms a front end section 234, which is only interrupted by the single, continuous longitudinal slot, the length of which is smaller than the thickness of the plug-in part 229, and a corresponding rear end section 235, which is, however, longer than the front end section 234.
  • These two end sections 234, 235 are connected to one another via an intermediate section, which, apart from the aforementioned longitudinal slot, is subdivided by further longitudinal slots in such a way that it forms two adjacent longitudinal bars on each flat side 236 and 237 of the plug-in part 229, which are offset inwards relative to the narrow sides 238, and a single longitudinal bar 239 on the narrow sides 238, whose width is smaller than the width of this essentially flat narrow side 239 and which lies in the middle of this narrow side.
  • the plug-in part 229 forms two essentially mirror-symmetrical sleeve legs 240, 241 in the area of the end sections 234, 235 and lying in a common plane, the longitudinal edges 263, 264 of which are formed by cut edges and limit the continuous longitudinal slot 242 mentioned.
  • the longitudinal direction of the plug-in part 229 are of the same length and on the respective flat side 236 or 237 are also of the same width, and with their front ends over the full width merge in one piece into the front end section 234 and with their rear ends into the rear end section 235.
  • the longitudinal edges of the constantly wide contact springs 243, 244, 245 on each flat side which face away from one another are offset inwards relative to the associated narrow side 239 by an amount which is greater than the sheet metal thickness of the socket body 228.
  • the longitudinal edges of the corresponding contact springs 243 and 244, 245 lying opposite one another in parallel lie at a distance from one another which is at most as large as their width.
  • the two contact springs 243 which are provided on the flat side 236 opposite the longitudinal slot 242, are angled at both ends at an obtuse angle and have a straight-line or flat intermediate section between them, the ends adjoining the end sections 234, 235, which are opposite to the associated flat side 236 is offset on the inside that it engages between the longitudinal webs 239, but is non-contact with them.
  • a vertex 248 parallel to the plugging direction is formed with a length which is substantially greater than half the length of the intermediate section lying between the end sections 234, 235.
  • the contact springs 244, 245, are curved in such a flat manner that their convex, inner curvature sides each form a linear apex 249 that is continuous over their width, but is not offset as far inwards as the apex 248 of the contact springs 243.
  • the apices 248, 249 lie symmetrically to the center of the length of the intermediate section mentioned. Due to the design described, the front ends of the contact springs 243, 244, 245 form with their inner sides insertion bevels 246, 247 for the plug 202, which are provided approximately parallel to the associated flank surfaces of the plug tip 217.
  • the contact springs 243, 244, 245 lie completely within the flat outer surfaces of the plug-in part 229, wherein they stress the longitudinal webs 239 under tension when expanded.
  • a push stop 250 and a pull back stop 251 are provided for the aforementioned securing against the insulating body 203.
  • the advance stop 250 is essentially formed by the front edge or end surface 252 of the clamp legs of the bending clamp 233, which, according to FIG. 33, over the plane of the associated flat side 237 protrude and which is assigned a corresponding counter-stop at the rear end of the insulating body 203, which can be formed by a corresponding extension of the insulating body 203 by its rear end surface 219, so that from this only the bending clips 233 of the receptacles 100 and not, as in Fig. 26, the rear end portions 235 and the cable connection shafts 231 protrude.
  • the front end of the cable sheath 226 may also engage slightly in the insulating body.
  • the retraction stop 251 is designed in the manner of a resiliently deflectable snap member as a flat spring tongue 253, which on the flat side 235 is partly between the contact springs 243 and has a width which is substantially equal to the spacing between these contact springs 243.
  • the continuous rectilinear or flat spring tongue 253 is at an obtuse angle from the rear end edge of the front end section 234, so that it lies essentially completely outside the plane of the associated flat side 236 and approximately over the entire length of the contact springs 243, 244, 245 enough, with its free end edge 254 is provided approximately in the plane of the front end edge of the rear end portion 235.
  • the spring tongue 253 can be pressed resiliently completely into the plane of the flat side 236, its outer side forming a run-up slope when the plug-in sleeve is inserted into the insulating body 203 until the end edge 254 jumps behind the counter-stop 222 as a stop surface.
  • the push stop 250 lies approximately in the plane of the flat side 237 opposite the retraction stop 251. Both stops lie completely outside the delimitation planes of the plug opening 259 of rectangular cross section, into which only the contact springs 243, 244, 245 protrude. Further lie all stops 250, 251 symmetrical to the longitudinal center plane 260 of the plug-in part 229, which is perpendicular to the flat sides 236, 237.
  • FIGS. 34 to 45 the same reference numerals are used for corresponding parts as in the other figures, but each with different letter indices, which is why the corresponding parts of the description apply analogously.
  • the advance stop 250a lies in front of the bending clip 233a or the heddle clip 232a in the region of the transition section 230a, such that its stop surface 257 is approximately in the plane of the rear end edge of the rear end section 234a or the Sleeve legs 240a, 241a is provided.
  • the stop 250a is formed by an essentially flat web 255, which projects at right angles over the same flat side 236a as the withdrawal stop 251a.
  • the stop 255 which is bent out of the substantially flat transition section 230a, is offset inward from the adjacent narrow side 238a by approximately half the width of the associated sleeve leg 240a and is formed by the angled edge of the transition section 230a such that its back edge is formed by the associated oblique side edge of the transition section 230a is formed and slopes obliquely from the stop surface 257 to the rear.
  • the web 255 is angled along a bending edge 256 which is parallel to the longitudinal center plane 260a or to the direction of insertion.
  • the rear end face 219a of the insulating body 203a is assigned to the feed stop 250a as a counter-stop 258.
  • the feed stop 250b is essentially formed by the rear end section 235b, but is angled about a bending edge 256b which is transverse or perpendicular to the longitudinal center plane 260b, so that its stop surface 257b is at least one by the inner flat side Bending leg 255b is formed.
  • the stop 250b is located symmetrically to the longitudinal center plane 260b on both sides of the longitudinal slot 242b and is formed by two legs 255b extending laterally up to this longitudinal slot 242b and angled from the rear ends of the sleeve legs 240b, 24lb, the width of each of which is considerably smaller than that of the sleeve legs 240b, 241b is so that they are laterally set back from the narrow sides 238b and have an overall width which is only approximately as large as the corresponding width of the heddle clip 232b.
  • the stop 250b represents the part of the entire receptacle body 228b which projects furthest over the plane of the associated flat side 237b.
  • FIGS. 42 to 45 show an embodiment according to the invention which can also be provided on a plug-in sleeve by itself or without the stop arrangement described.
  • the plug part 229c between the end sections 234c, 235c at the associated intermediate section has a spring cam 261 which is provided on one of the longitudinal webs mentioned, namely preferably on one of the contact springs.
  • the spring cam 261 is provided on a sleeve leg 241c, specifically on a protrusion 262 protruding over its otherwise rectilinear longitudinal edge 263c, the edge of which is essentially rounded in a semicircular shape and merges into the adjacent rectilinear sections of the longitudinal edge 263c.
  • the Spring cam 261 is embossed in a substantially circular or spherical cap shape from the projection 262 into the plug opening 259c in such a way that it lies practically in the longitudinal slot 242c, which in the area of the spring cam 261 can form a correspondingly curved slot section 265, although it is also conceivable that the projection 262 or the spring cam 261 engages under the opposite longitudinal web in the area of a corresponding shape and is thereby supported by its spring action.
  • the longitudinal web carrying the spring cam 261 in the exemplary embodiment shown has both the leaf spring-like effect of the contact spring 245c and the effect of a cam spring for the spring cam 261 lying between its ends and closer to the front end, which projects beyond the associated apex 249c.
  • the spring cam 261 is located in the region of this apex 249c, but is offset from the apex 249c so that the apex line essentially affects its circumference.
  • the spring cam 261 is located practically in the region of the insertion bevel 246c directly adjacent to the apex 249c, so that the cam axis 266 lies at a rearward opening angle of slightly less than 90 ° to the plugging direction and the front circumferential region of the spring cam 261 practically has a more increasing continuation section forms the lead-in slope 246c.
  • the plug 202 is indicated by dash-dotted lines, the plug tip 217 of which, in the inserted state, extends essentially only to the front end of the rear end section 265c and the spring cam 261 engages in the plug opening 216 thereof.
  • a corresponding spring cam could be provided which, if no retraction stop 251c is provided, can be formed directly by the associated flat side.
  • the plug 29'b similar to the embodiment of Fig. 8 has a width tapered and substantially in its plane shaft 50, the width of which can be equal to that of the tab, for example, so that the longitudinal edges of which are aligned. These longitudinal edges project between the actual flat plug and the shaft 50 on both sides in one piece with the plug piece 29'b and cams 39'b lying in its plane.
  • the through opening formed in the housing 37'b of the insulating body 32'b as a plug-in opening for the plug-in piece 29'b is essentially adapted in cross section to the plug-in piece, its larger cross-sectional extent being closely related to the distance between the mutually facing edges of the cams 39'b is adapted that these can just be pushed through.
  • the insulating body 32'b can be plugged on from the plug ends of the plug-in pieces, that is to say from the outside, against the electric hotplate on the plug-in pieces.
  • the cams 39'b slide through the through openings of the housing 37'b until they reach its outer end face. Due to the resilient properties of the connecting wire 17'b, the plug 29'b then jumps into a position which is not exactly aligned with the through-opening in the housing, in which one or the other of the two cams 39'b engages behind the end face mentioned like a barb.
  • the corresponding side edge 52 of this cam 39'b which is associated with this end face, is designed to be undercut and inclined for the
  • each cam 39'b is in the associated end face of the housing 37'b immediately adjacent to the lead-through opening, a depression 51 is assigned with a correspondingly inclined bottom surface. Since the insulating body 32 'b in the mounting position radially inward relative to the electric hot plate, e.g. is supported by the gradation 42 ', if necessary under a certain pretension of the connecting wire 17'b, the striking cam 39'b is pulled transversely to the plugging direction of the plug-in piece into its securing position as a result of the interlocking inclined surfaces. Depending on the direction in which the connecting wire 17'b springs back, either one or the other cam 39'b comes into engagement with the associated recess 51.
  • the insulating body 32'b can no longer detach itself, especially since it is usually secured by several, separately resilient plug-in pieces.
  • the cams 39'b also form stops for the socket to be plugged onto the flat plug.
  • the stop surface for the cam can also be recessed in the insulating body.
EP19890100859 1988-02-09 1989-02-08 Plaque de cuisson électrique Withdrawn EP0327849A3 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19883803806 DE3803806A1 (de) 1988-02-09 1988-02-09 Elektrokochplatte
DE3803806 1988-02-09
DE3840734 1988-12-02
DE19883840734 DE3840734A1 (de) 1988-12-02 1988-12-02 Steckhuelse fuer elektrische steckanschluesse, insbesondere an elektrokochplatten

Publications (2)

Publication Number Publication Date
EP0327849A2 true EP0327849A2 (fr) 1989-08-16
EP0327849A3 EP0327849A3 (fr) 1991-01-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890100859 Withdrawn EP0327849A3 (fr) 1988-02-09 1989-02-08 Plaque de cuisson électrique

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Country Link
US (2) US4993553A (fr)
EP (1) EP0327849A3 (fr)

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EP0639935A2 (fr) * 1993-08-17 1995-02-22 Elektrowärme Belzig GmbH Element de connexion pour plaque de chauffage par radiation
EP0639935A3 (fr) * 1993-08-17 1995-08-30 Belzig Elektrowaerme Gmbh Element de connexion pour plaque de chauffage par radiation.
DE19821140A1 (de) * 1998-05-12 1999-11-18 Ego Elektro Geraetebau Gmbh Elektrokochplatte
EP0957661A3 (fr) * 1998-05-12 2000-09-06 E.G.O. ELEKTRO-GERÄTEBAU GmbH Plaque de cuisson électrique
DE19821140B4 (de) * 1998-05-12 2009-08-27 E.G.O. Elektro-Gerätebau GmbH Elektrokochplatte

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EP0327849A3 (fr) 1991-01-16
US4993553A (en) 1991-02-19
US5122639A (en) 1992-06-16

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