EP0224098A1 - Plaque de cuisson électrique et dispositif pour sa connexion - Google Patents

Plaque de cuisson électrique et dispositif pour sa connexion Download PDF

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Publication number
EP0224098A1
EP0224098A1 EP86115498A EP86115498A EP0224098A1 EP 0224098 A1 EP0224098 A1 EP 0224098A1 EP 86115498 A EP86115498 A EP 86115498A EP 86115498 A EP86115498 A EP 86115498A EP 0224098 A1 EP0224098 A1 EP 0224098A1
Authority
EP
European Patent Office
Prior art keywords
hotplate
pins
underside
connection
connecting pins
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP86115498A
Other languages
German (de)
English (en)
Other versions
EP0224098B1 (fr
Inventor
Robert Kicherer
Felix Schreder
Stefan Reif
Uwe Schneider
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
Application filed by EGO Elektro Gerate Blanc und Fischer GmbH filed Critical EGO Elektro Gerate Blanc und Fischer GmbH
Priority to AT86115498T priority Critical patent/ATE54530T1/de
Publication of EP0224098A1 publication Critical patent/EP0224098A1/fr
Application granted granted Critical
Publication of EP0224098B1 publication Critical patent/EP0224098B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H05B3/68—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
    • 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 with an insulating piece for the passage of heating resistor connecting lines, the outer connecting portions lying on the underside of the hotplate are formed with their connecting ends for connecting device lines.
  • Such 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 are connected to the appliance lines on the underside of the hob.
  • the width of the mounting opening is usually only slightly larger than the greatest width of the part of the hotplate body engaging in it, which is generally due to an outer, annular cast flange edge of the hotplate body is determined.
  • connection sections or flexible connection sections as in case 1e of DE-PS 29 33 349, it may be necessary for the cooking plates to be inclined relative to the hob, which can complicate assembly, especially in the case of automation.
  • connection sections are formed according to DE-OS 33 01 219 only by short stubs protruding beyond the insulating piece, access to the connection of the device lines can also be relatively complicated here, in particular if the connection is made by a welded connection.
  • the invention has for its object to provide an electric hotplate of the type described, or the like with a simple structure, a significantly simplified installation in the hob. as well as an inexpensive connection of the device lines.
  • the deformable, not flexible connecting pins which can only be deformed using relatively large bending forces, do not protrude so far on the one hand that they hinder a merging of the hob and hotplate, which is axially parallel to the central axis of the assembly opening, and on the other hand they project transversely to the central axis of the hotplate in such a way that they extend from the outer circumference forth, for example se in a plug-in movement, can be connected to the device lines, whereby they compensate for any slight deviations in position compared to the connecting members by their resilient mobility.
  • the hotplate according to the invention can also be designed in a simple manner in such a way that it can be stacked one above the other, for example with the interposition of a cardboard coated with foam film or a similar flat body, with similar or identical hotplates, and in such a way that superimposed hotplates are arranged coaxially with one another are.
  • the hot plates can be alternately supported with their cooking surfaces and their undersides, or they can be stacked in the same orientation so that adjacent hot plates with a cooking surface and a bottom face each other, whereby the bottom cooking plate is expediently arranged with the cooking surface facing downwards is.
  • the above-mentioned stackings which ensure transport and storage in a narrow space, are possible in particular if at least one receiving recess for the connecting pins is provided in the cover, in such a way that in a transport position they extend down to the underside of the hotplate at most, however, when released from the stack, spring out over the underside of the hotplate.
  • the connecting pins then move away from the underside of the hotplate, for example, at a few angular degrees to their free ends, so that their access is particularly favorable for the connection to the appliance lines parallel to their longitudinal direction.
  • connection connections and the device lines can be laid in an area in which no excessive temperatures occur due to the design according to the invention.
  • the connecting lines themselves are designed over their entire length so that they are resistant to the high temperatures.
  • the object on which the invention is based can also be achieved in an advantageous manner by providing a common connecting piece for all connecting pins, which has separate connecting elements arranged next to one another on an insulating body and threading guide means for the connecting pins located in the region of their front ends , so that even with automated assembly, a positionally correct connection between connecting pins and connecting piece or the device lines connected to them is ensured.
  • the connector thus contributes to the correct alignment of the pins before the final connection or before it reaches its end position.
  • Guide surfaces are provided, which are expediently arranged so that they have an aligning effect in at least two coordinate directions.
  • the connecting piece has connecting or aligning members which are insulated from the connecting members for direct engagement in the hotplate, so that an exact positional alignment and possibly a direct load-bearing connection of the connecting piece with respect to the hotplate can be achieved in a simple manner.
  • the insulating body expediently protrudes with a larger part of its total length over the outer circumference of the hotplate, so that the device lines adjoining its outer end are relatively far away from the hotplate and therefore do not have to be particularly temperature-resistant.
  • connection pins can also be aligned with the hotplate before assembly by a separate centering member, this centering member engaging at a distance from the bushing through the insulating piece on the connection pins and expediently leaving their ends freely exposed at least over a short length.
  • the centering member which can be transferred from a stacking position into an assembly position, is advantageously arranged so that when connecting the connecting piece it gradually releases the connecting pins over the entire length over which they engage in the connecting piece.
  • the mechanical and securely electrically conductive connection between the connecting members and the connecting pins can be achieved by resistance welding, spot welding, Inert gas welding and in particular by non-contact welding, such as laser welding. But it can also be done by squeezing the connecting member, by clamping screws or by pure, if necessary releasable plug connections, which is particularly advantageous when hotplates have to be replaced or replaced.
  • the connections mentioned are also suitable for connecting the connecting members to the device lines, each of the possible combinations between the type of connection with the connecting pins and the type of connection with the device lines being conceivable to adapt to the respective requirements.
  • the risk that the heating resistor connecting leads are torn off from their connection to the heating resistors when the hotplate is stacked or during assembly by moving the connecting pins inside the hotplate can be substantially reduced by securing the inner sections of the connecting leads with respect to the hotplate are that movements of the pins are not transmitted to them.
  • the hotplate according to the invention is particularly suitable for automatic stacking and for automatic assembly with the aid of handling machines (robots).
  • both the hotplate and the connecting piece or its insulating body each have at least one positioning element, by means of which the position of the hotplate or the connecting piece can be precisely recognized by the handling machine and this position can be secured.
  • a device for attaching the connecting piece to the electric hotplate is characterized according to the invention in that a gripper is provided which moves the connecting piece in three coordinate directions with respect to the connecting pins in order to bring them into engagement with the guide surfaces one after the other, so that it can be easily moved results in a precise alignment of the pins relative to the connector.
  • a gripping and aligning device is provided for the connecting pins, preferably two gripping jaws being provided, at least one of which has a comb-like gripping surface with centering cutouts for the connecting pins.
  • the centering cutouts can be prism-shaped, for example V-shaped, in a simple manner.
  • the electric hotplate 1 has a one-piece cast-iron body 2, the upper side of which forms a flat cooking surface 3 which is provided with a recess in the center and is therefore ring-shaped, but free of openings.
  • The, for example, circular hotplate body 2 forms a circumferential collar 4 adjoining the cooking surface 3, the outer circumference of which determines the greatest width or the largest diameter of the hotplate body 2 and on the underside of which a jacket-shaped or apron-shaped flange edge 5 slightly offset inward relative to this outer circumference , whose lower end face determines the underside of the hotplate body 2.
  • This outer flange 5, the axisymmetric to the central axis 6 of the elec Trokochplatte 1 protrudes downwards over the part of the underside of the hotplate body 2 which closes on the central axis 6.
  • one, two or more heating resistors 7 in the form of heating coils are laid in grooves extending spirally about the central axis 6, which are separated from one another by correspondingly spiraling, rib-shaped intermediate webs of the cast body, which are pressed into a mineral-pressed insulating mass relative to the hotplate body 2 are embedded without contact.
  • this field can be delimited by an inner flange edge of the cast body corresponding to the outer flange edge 5, this flange edge expediently projecting less far downward than the outer flange edge 5.
  • the hotplate body 3 In the center, that is, possibly with a radial spacing within the inner flange edge, the hotplate body 3 has a center pin 8 which projects approximately over its underside as far as the flange edge 5 or slightly less and is provided with a threaded bore.
  • the underside of the electric hotplate 1 or of the space enclosed by the flange edge 5 is closed with a cover 9 made of sheet metal, which bears under tension with an outer ring edge 10 on the lower end face of the flange edge 5.
  • the cover 9 formed by a lid-like embossed or deep-drawn part, the outer circumference of which is formed by the approximately the same width as the outer circumference of the flange edge 5 having the edge surface of the ring edge 10, is with a hollow screw 11 lying in the central axis 6 and engaging in the central pin 8 clamped against the lower end face of the center pin 8, the head of the hollow screw 11 being recessed in a recess in the underside of the cover 9 in such a way that the hollow screw 11 does not extend over the regions of the underside of the surface which are essentially in a plane Cover 9 protrudes.
  • the banjo bolt 11 can, however, without significantly impairing the stackability, also protrude at most by an amount above this underside which corresponds to the depth of the central recess in the cooking surface 3.
  • the cover 9 only has areas that are on the Form underside depressions, that is to say set back from this underside. These areas are in particular formed by an approximately closed, adjacent to the R inoffice directly opposite annular grooved recess 12 as well as an approximately rectangular shape in bottom view limited recess 13, which lies in the region of the interruption of the annular groove 12 symmetrical about an axial plane 14 of the cooking plate.
  • a support ring 15 made of sheet metal is provided which closely surrounds the outer circumference of the flange edge 5 over a small part of its height and for supporting the electric hotplate 1 on the edge of the mounting opening in a hob or the like serves.
  • the support ring 15 can be approximately U-shaped in cross-section, its outer ring leg expediently running obliquely in cross-section downwards to the outside.
  • the heating resistors 7 have end pins 16 fastened at their ends, which protrude downward from the insulating bed and lie completely in the space between the underside of the hotplate body 3 and the cover 9. At these end pins 16 are the ends of inner portions 18 of heating resistor leads. 19 attached, these inner portions 18 between an insulating piece 20 and the associated end pin 16 substantially straight or parallel to the cooking surface 3 with a distance between the underside of the hotplate body and the cover 9.
  • All, four connecting lines 17 in the exemplary embodiment shown are led out through the cooking plate or through the cover 9 through side-by-side through openings 21 in the insulating piece 20 which are at right angles to the cooking surface 3, the leadthrough Openings 21 lie on both sides of the axial plane 14 in a common plane perpendicular to this and the insulating piece 20 is formed approximately symmetrically to the axial plane 14.
  • the sections 18 are angled approximately at right angles adjacent to the inside of the insulating piece 20 or to the associated end of the respective lead-through opening 21 and can lie essentially without play in the respective lead-through opening 21 with this angled section.
  • the respective connecting line 17 is in turn provided with a bend 22 such that it forms an outer, straight connecting pin 19 following this bend, which is parallel lies to the axial plane 14 and is directed towards the area of the flange 5 closest to the insulating piece 20.
  • the connecting lines 17 are thus angled in the area of the passage through the insulating piece 20, in some cases approximately U-shaped or in part Z-shaped.
  • the expediently made of steatite insulating piece 20 passes through a window-like opening 23 that closely surrounds it with its boundary in the bottom of the recess 13 of the cover 9 parallel to the underside and is supported with a shoulder surface on the inside of the edge of the cover 9 surrounding the opening 23. With protrusions 24 protruding on both sides of the lead-through openings 21, the insulating piece 20 is further supported on the underside of the hotplate body 3 in the area in which the heating resistors 7 are located.
  • the outer ends of the through openings 21 lie in a region of the insulating piece 20 which is provided approximately in the plane of the bottom of the recess 13 and is surrounded by a circumferential, projecting edge which but does not protrude to the bottom of the cover 9. Cutouts 26 are provided in the long sides of this edge 26, the connecting pins 19 crossing the edge 26 at right angles in the area of the associated cutout 25.
  • a less deep receiving recess 27 is provided in the underside of the cover 9 between the latter and the ring edge 10, which extends almost to the ring edge 10 and into which the connecting pins 19 can be pressed resiliently in such a way that they do not over the underside of the cover 9 protrude and its ends extend almost to the inner circumference of the flange 5.
  • the connecting pins 19 lie in a common plane perpendicular to the axial plane 14, which is inclined at a few degrees to the underside of the cover 9 or to the cooking surface 3 in such a way that the connecting pins 19 move to their free ends from the underside and with these free ends are at a distance from the underside of the rest of the hotplate. All pins 19 are of equal length or so long that their free ends lie in a common plane perpendicular to the axial plane 14.
  • the hotplate has on its underside, namely in the lower end face of the flange edge 5, a positioning member 28 in the form of a cutout in which the cover 9 engages with a cam which is formed out of its ring edge 10.
  • a positioning member 28 in the form of a cutout in which the cover 9 engages with a cam which is formed out of its ring edge 10.
  • protruding parts are provided on the hotplate la via the underside of the cover 9a, so that it is essentially only suitable for stacking with offset central axes 6a.
  • a threaded bolt 11a projecting downward in the central axis 6a is provided, which is screwed into the central pin of the hotplate body 2a and on which a nut is arranged to fix the cover 9a relative to the hotplate body.
  • the cover 9a lies completely within the flange edge 5a and is cup-shaped with a raised edge within the flange edge 5a against the underside of the hotplate body or the field having the heating resistors.
  • the embodiment according to FIG. 3 At least one is adjacent to the central pin 11a via the Bottom protruding anti-rotation pin 29 provided.
  • the insulating piece 20a also projects beyond the underside of the cover 9a, so that the connecting pins 19a lie completely below the underside of the cover 9a.
  • the mating connector 30, which is U-shaped in cross section, the free end of which protrudes outward to the same extent as the connecting pins 19a, lies with its plugging section at a distance below the cover 9a, this plugging section being approximately the same plugging direction as the connecting pin te 19a has.
  • the profile legs of the mating connector 30 are directed downward to the connection pins 19a and are at a clearance from one another which is greater than the width of the zone on which the connection pins 19a lie.
  • the mating connector 30, which can also be used instead of the positioning member 28 for the correct orientation of the electric hotplate 1a, is used to plug in a connecting piece which at the same time has connecting members for receiving the connecting pins 19a.
  • a connecting piece 31 is provided, which or the like in an insulating body 32 made of steatite. has a number corresponding to the number of connecting pins 19b parallel to one another and directly adjacent, electrically conductive connecting members 33, which extend approximately over the entire length of the insulating body 32 and protrude freely beyond the front end thereof.
  • device lines 34 are connected via crimped or clamped connections 35, these device lines 34 being flexible, that is to say easily bendable or limp and, in each case, surrounded by a separate insulating jacket, which in the region of their transition into the connecting piece 31 are aligned with the front ends of the connecting members 33.
  • the connecting members 33 are designed in the manner of plug sockets, and in this area they come almost to the end circuit of the device lines 34 are U-shaped in cross-section and the opening between the U-legs is covered by an inner surface of the receiving opening in the insulating piece 32, so that a closed in cross-section across the circumference, partly limited by the connector 33 and partly by the insulating piece 32 Socket opening 36 is formed, the width of which is less than twice the diameter of the connecting pins 19b.
  • the freely projecting front ends of the connecting members 33 designed in the manner of wire end sleeves form threading-in guide means and, for this purpose, have a cross-sectional shape which is not completely closed over the circumference.
  • this cross-sectional shape is approximately rectangular at an angle with a rounded transition zone between the angle legs, the radius of curvature of which corresponds to the radius of curvature of the semicircular crossbar of the aforementioned U-profile and is flush with it.
  • a shorter angle leg 38 of this angle profile 37 lies in the connected position parallel to the common central plane of the connecting pins 19b, namely on its side facing away from the cover 9b, and is aligned with the associated U-leg of the connecting element 33, from which it forms a continuous continuation.
  • the other, longer angle leg 39 is at right angles to this and is directed towards the underside of the cover 9b, this angle leg 39 being formed by a correspondingly deformed end section of the other U-profile leg of the connecting member 33 and in this profile leg having a surface which is smooth on the inside, continuously curved guide section 42 merges.
  • the inner surfaces of the angled legs 38, 39 form two guide surfaces 40, 41, which lie at right angles to one another and merge into one another via a concave fillet, of which the guide surface 41 is continuously curved into the inner surface of the guide section 42 and thus, like the guide surface 40, continuously merges into the associated inner surfaces of the socket opening 36.
  • the angle leg 38 connects with its outer surface to one of the freely projecting ends of the connecting members 33 or the angle profiles 37 over a part of their length overlapping shoulder surface 43 of the insulating body 32, which is formed by a corresponding projection extending over the width of the insulating body 32.
  • This projection or the shoulder surface 43 lies on the side of the connecting members 33 or the angle profiles 37 facing away from the cover 9b, the shoulder surface 43 being able to form a continuation of the guide surfaces 40.
  • the angled legs 38 or the guide surfaces 40 of all the connecting members 33 protrude in cross section in the same direction, that is to say that the threading-in guide means are oriented identically in all connecting members.
  • the electric hotplate 1b is shown in its preferred mounting position, namely with the cooking surface 3b located at the bottom, and the hob 44 engaging in the support ring 15b is indicated by dash-dotted lines.
  • the connecting piece 31 is moved towards the connecting pins 19b in parallel or in alignment with the connecting pins 19b with a gripper (not shown).
  • the gripper engages in two positioning members 45 of the connecting piece 31 provided on the side of the insulating body 32, which are formed by lateral cutouts or depressions, so that in addition to a positionally correct mounting of the connecting piece 31, a positive connection in the plug-in direction is also ensured.
  • the connecting piece 31 is moved towards the connecting pins 19b in such a way that they are opposite the extensions intended in the plugging direction stanchions of the guide surfaces 40, 41 still have a small distance, that is to say they come to rest in the angular or plug-in space enclosed by them.
  • the connecting piece 31 is moved in two mutually perpendicular coordinate directions 46, 47 at right angles to the plug direction arrow 48, these coordinate directions being parallel or at right angles to the planes of the guide surfaces 40, 41 lie and are each directed in the direction perpendicular to the associated guide surface 40 or 41 in which this guide surface points.
  • the connecting piece 31 is first moved in the coordinate direction 47 perpendicular to the guide surface 41 until the connecting pins 19b abut the respectively associated guide surface 41, after which the connecting piece 31 is moved in the coordinate direction 46 perpendicular to the guide surface 40 until the connecting pins 19b also turn on strike this guide surface 40.
  • the connecting pins 19b are thus aligned exactly with respect to the socket openings 46, so that the connecting piece 31 can be pushed completely in the plugging direction arrow 48 onto the connecting pins 19b designed as plug pins, for example until the front ends of the connecting members 33 or the angle profiles 37 in the area of Bends 22b come to rest.
  • the movement in the plug-in direction arrow 48 can be interrupted or it can be continued at such a low speed that the threading of the connecting pins 19b into the socket openings 36 is guaranteed in any case.
  • the pins 19b are then within the connecting members 33, that is, between their front and rear ends or between the front and rear ends of the iso lier emotionss 32 with the connecting members 33 firmly connected. This can be done, for example, in an advantageous manner by contactless welding, for which purpose an access opening 49 is provided on the side of the insulating body 32 facing away from the cover 9b in the region of each connecting member 33.
  • the connecting piece 31 or the insulating body 32 is designed as a flat body of approximately constant thickness when viewed in side view or in the direction of insertion, which is oblong-rectangular in plan view with connecting members 33 lying side by side over its width.
  • the insulating body 32 On its side facing the cover 9b, the insulating body 32 has nub-shaped locking members 50 which protrude near its front end and to which corresponding locking openings or locking recesses 51 in the bottom of the receiving recess 27b are assigned.
  • the two locking recesses 51 lie in a view of the underside of the hotplate according to FIG. 4 on both sides of the group of connecting pins 19b.
  • the latching members 50 snap into the latching depressions 51 when the connector 31 is plugged onto the connector pins 19b in the manner of stops, so that the insertion depth with which the connector pins 19b engage in the connector 31 is precisely defined.
  • the design can be provided such that the locking members 50 are pressed into the locking recesses 51 by the spring force of the connecting pins 19b and thereby secured in their locking position. When connected, this protrudes obliquely to the bottom of the electric cooker in accordance with the connecting pins 19b plate 1b lying connector 31 relatively far beyond the outer periphery of the flange 5b or the hotplate body 2b, so that the device lines 34 are at a relatively large distance from the electric hotplate.
  • each connecting pin also forms an articulated zone in the form of a predetermined bending point, through which the connecting pin is in particular about a central axis perpendicular to the axial plane 14 relative to the rest of the hotplate, preferably at least up to a position projecting at right angles above the underside thereof can be pivoted.
  • the connecting piece can, if necessary, also lie vertically below the insulating piece 20b, the bending of the connecting pins advantageously only taking place after the connection to the connecting piece.
  • this joint zone 22 of the connecting line 17c is formed by two cross-sectional weakenings 52 lying directly adjacent to one another on both sides of the bend, these cross-sectional weakenings being able to be formed by crushing the solid wire piece and having their smaller cross-sectional extent at right angles to the joint axis.
  • the cross-sectional weakenings can also be provided directly adjacent to the bend next to one another at the associated end of the connecting pin, so that the bend and the joint zone lie next to one another and do not coincide.
  • the connecting members 33d are formed by sockets protruding freely over the front end of the insulating body 32d, which are bent from sheet metal strips and are therefore longitudinally slotted.
  • the connecting members 33d conical extensions 37d as threading and guiding means for the connecting pins.
  • the insulating body 32d has a stop 50d on its associated side, which can abut the outer periphery of the flange edge of the hotplate body and thereby fix the insertion depth for the connecting pins.
  • the projecting connecting members 33d are particularly suitable for connection to the connecting pins by spot welding or non-contact welding, such as laser welding.
  • the insulating body 32d has in the area of each connecting member 33d passing through it an engagement opening 53 for a crimping tool, with which the connecting members 33d are deformed by squeezing within the insulating body 32d in such a way that they are secured in the longitudinal direction with respect to the insulating body 32d are.
  • the engagement openings 53 can be provided side by side on the side facing away from the hotplate, on the side facing them or on both sides, preferably in each case in alignment with one another.
  • a guide surface 40e namely the guide surface parallel to the common central plane of the connecting pins, is formed by the insulating piece 32e, namely by a shoulder surface which is approximately the entire width thereof and similar to the shoulder surface 43 according to FIG. 7.
  • This shoulder surface is only interrupted by flat strip-like or flag-shaped extensions of the connecting members 33e, which engage in groove-shaped recesses in the shoulder surface such that the guide surfaces 40e are approximately aligned with the associated inner boundaries of the socket openings 36e, these inner boundaries are formed by the associated U-profile legs of the connecting members 33e.
  • each guide surface 40e passes continuously between two guide and connection lugs 39e, each connection lug 39e forming a guide surface 41e lying at right angles to the guide surface 40e.
  • the guide surfaces 40e in contrast to the embodiment according to FIGS. 5 to 7, point away from the underside of the hotplate, so that the associated coordinate direction 46e is accordingly directed in the opposite direction.
  • the insulating body 32e In addition to the access openings 49e for the contactless welding located adjacent to the front end of the insulating body 32e, the insulating body 32e also has at least one engagement opening 53e for a crimping tool or the like for each connecting member 33e. on.
  • the freely projecting ends of the terminal lugs 39e are for the connection to the terminal pins by resistance welding or the like. suitable.
  • each connecting pin 19f a separate, groove-shaped receiving recess 27f is provided in the underside of the cover 9f, which is provided between a relatively narrow circumferential groove 54 adjoining the ring edge 10f and the recess 13f for the insulating piece 20f in the cover 9f.
  • the connecting members 33h are expediently formed by thick-walled pipe sections made of corrosion-resistant steel or a similarly high-temperature-resistant, electrically conductive material and can be mechanically firmly connected to the connecting pins by simply squeezing them together.
  • the connecting members 33i are formed by relatively thick-walled steel sleeves, which are widened in a funnel shape at their front ends to form threading and guiding means for the connecting pins by non-cutting deformation.
  • the connecting members 33i are oval or long round widened in such a way that its larger cross-sectional extent lies at right angles to the common central plane of the connecting members 33i or the connecting pins.
  • threaded clamping screws 55 are guided in such a way that they engage in the side flanks of the oval cross section of the connecting members 33i in accordance with FIG. 23 and are therefore guided particularly securely.
  • the clamping screws 55 are used to connect the device lines 34i, which are thus releasably attached.
  • the connecting members 33i are connected to the connecting pins by pinching.
  • the insulating body 32t is fastened to an essentially U-shaped plug body 56 which is bent from sheet metal and which can be designed, for example, to be plugged onto the mating connector 30 according to FIG. 3.
  • the plug body 56 which partially encompasses the insulating body 32i for securing the position, projects in the direction of insertion arrow 48i over the connecting members 33i and can be provided in the region of its front end with the latching members 50i in the form of features.
  • the plug body 56 lies on the side of the insulating body 32i facing the hotplate, which it covers with respect to the hotplate.
  • the connecting members 33k are oval or long round in cross-section throughout their length, so that the connecting pins are also inserted into long-round socket openings, the larger cross-sectional extent of which lies at right angles to the common central plane of the connecting pins.
  • clamping screws 57 are also provided, which are exposed at the projecting ends of the insulating body 32k Connecting members 33k are attached so that their threads engage in the mutually parallel, flat inner flank surfaces of the socket openings.
  • each connecting member 33m which clamps the end of the associated connecting pin 19m, which is expediently widened by squeezing, overlapping against the associated end of the device line 34m and thus directly against it.
  • This end of the device line 34m can be welded or the like. be attached to the connecting member 33m or it can be detachably fixed to the connecting pin 19m by the clamping screw 57m.
  • the clamping screws 57 are also recessed in the insulating body 32m.
  • this design is suitable for the connection pins 19m to be transferred into a position approximately at right angles from the underside of the hotplate, so that the connector 31m and the device line 34m, provided the space under the hob allow it, are relatively far below the electric hotplate are located.
  • each connecting member 33n can also be designed such that they can be connected to the connecting pins via a pure, preferably self-locking plug connection.
  • each connecting member 33n is formed by an approximately U-shaped sheet metal profile, whose leg lying towards the front of the connecting piece 31n has a plug-in opening for the respective connecting pin.
  • This plug-in opening can be delimited by a barb-like locking member 57n, which hooks in the connecting pin in such a way that it no longer releases it in the opposite direction.
  • a plug opening is expediently provided for a plug 58 attached to the device line 34n in such a way that it can be inserted releasably. All device lines 34n are attached directly adjacent to their associated ends or plugs 58 in the correct position on a web-shaped connecting piece 59, so that they can be connected together as a block to the connecting piece 31n.
  • the embodiment according to FIG. 28 differs from this essentially in that the front ends of the connecting members 33p assigned to the connecting pins are formed by angular profiles 37p lying freely in front of the insulating body 32p or similar threading and guiding means, so that the connecting pins are connected by welding can.
  • FIGS. 21 to 23 show the assignment of the connecting piece 31r to the electric hotplate lr or to a mating connector 30r, the electric hotplate lr being similar to that according to FIG. 3 and the connecting piece 39r essentially corresponding to that according to FIGS. 21 to 23 .
  • the plug body 56r is arranged in such a way that it receives the mating connector 30r between its relatively low legs pointing away from the underside of the hotplate and is thereby secured against lateral displacement relative to the latter.
  • plug-in bodies 56r can be provided, latching members 50r, which cooperate with corresponding counter-members, not shown in detail, in the counter-connector 30r.
  • the connecting members 33r are aligned very precisely with respect to the connecting pins 19r in two mutually perpendicular coordinate directions.
  • a plate-shaped centering member 60 formed in one piece with the mating connector 30s, is provided for all connecting pins 19s, this centering member 60 being in a centering position in a plane approximately perpendicular to the connecting pins 19s and protrudes downward from the electric hotplate 1s.
  • the centering member 60 which has an undercut centering opening 61 on its lower longitudinal edge for each connecting pin 19s, which in the area of this longitudinal edge forms a smaller execution opening, which is narrower than the remaining width of the centering opening 61 and is adapted to the diameter of the connecting pin 19s, engages on the connecting pins 19s at a short distance behind their free ends.
  • the centering member 60 is integrally connected to the front end of the mating connector 30s in the region of its side facing away from the centering openings 61 via a hinge zone 63 in the form of relatively weakly dimensioned connecting webs, the hinge axis being in the plane of the underside of the mating connector 30s, so that the centering member 60 can be folded against this underside.
  • the connecting pins 19s exit from the centering openings 61 through the execution openings 62.
  • the plug Body 56s of the connecting piece 31s can be shortened relative to the connecting members 33s in such a way that the latter first come into engagement with the connecting pins 19s.
  • the connecting members 33s and in particular the plug body 56s abut the centering member 60, so that this is folded against the underside of the mating connector 30s and then lies between this underside and the plug body 56s, so that the connecting members 33s are not electrical Can bridge.
  • the plug body 56s lies between the lateral profile legs of the mating connector 30s on its underside.
  • Gripping jaws of a device for connecting the hotplate can be designed in accordance with the centering member, but expediently have prism-shaped, that is to say extended V, centering openings, for example V-shaped, wherein two gripping jaws can be provided in opposite directions.
  • the centering openings 61 of the link-like centering member 60 are dovetail-shaped.
  • the centering openings 61t can also be angular, in such a way that they are delimited by angular fixing tabs and the centering opening 61t lies essentially laterally offset with respect to the outlet opening 62t.
  • the centering openings 61u are formed by inclined, groove-like openings with approximately continuously flat side surfaces, which may be at a constant distance over their height or at a decreasing distance from the outlet openings 62u.
  • connection members 33 etc. and the device lines 34 flat plug tongues for plug connections, as are common under the trade name AMP, can be provided on the connection members in all embodiments.
  • an alignment of the connecting pins for example the connecting pins 19, 19 s or 19 v during assembly, can also take place in that a separate alignment or.
  • Centering tool 64 is provided, which is expediently provided as a gripper for the separate gripping of the connecting pins 19 v in such a way that they are both aligned parallel to one another and are held at a predetermined distance from one another.
  • the tool has two comb-like gripping jaws 65, 66 which can be brought into engagement with one another and which either lie immediately adjacent to one another and can thereby overlap one another, or of which a thicker gripping jaw on their comb edge has a receiving slot for immersing the other, thinner or plate-shaped ones Has gripper jaw.
  • the gripping jaws 65, 66 have gripping openings 67 which are designed and arranged corresponding to the centering member 60 and face one another with their open sides and which are narrowed in a funnel-like manner to their bottom surfaces, for example with convexly curved flanks, the bottom surfaces being approximately half the cross-section of the connecting pins. 19 v correspond.
  • the gripping jaws 65, 66 protrude from one end in the direction in which the gripping openings 67 are provided side by side cantilevered from a gripper holder 68, against which one or both gripping jaws are movably mounted towards and away from one another.
  • only one gripper jaw 65 is slidably mounted to close the tool relative to the gripper holder 68, while the other gripper jaw 66 is rigidly attached to the gripper holder 68.
  • An actuator 70 in the form of, for example, an actuating rod guided on the rod-shaped jaw guide 69 engages on the respectively movable gripping jaw 65.
  • the tool 64 moves laterally into the connecting pins 19 v such that they lie between the gripping jaws 65, 66 and between two adjacent connecting
  • Pins 19 v are provided, the two opposing, substantially tapered, associated comb teeth, each lying between two gripping openings 67 of the respective gripping jaw 65, 66 and forming their flanks.
  • the connecting pins 19 v slide on the flanks of the gripping openings 67 until they abut the two opposite bottom surfaces of two opposite gripping openings 67 and are held essentially free of play by clamping. Since the free ends of the connecting pins 19 v protrude beyond the tool 64, these ends can still adapt slightly in their position when inserted into the connecting piece to its position or to the position of the connecting elements.
  • the gripping jaws 65, 66 can be moved in a straight line relative to one another
  • the gripping jaws 65 v, 66 v in the embodiment according to FIG. 38 can be pivoted relative to one another in the manner of pliers.
  • the two gripping jaws 65 v, 66 v form tong arms which are elongated beyond the gripping openings 67 v and which, at their ends remote from the gripping openings 67 v, can be pivoted to one another in a joint 69 v about an axis parallel to the central axes of the gripping openings 67 v, as well as on the gripper bracket 68 v.
  • the gripping openings of at least one gripping jaw can also be designed in accordance with FIGS. 33 to 35.

Landscapes

  • Cookers (AREA)
  • Baking, Grill, Roasting (AREA)
  • Resistance Heating (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Combinations Of Kitchen Furniture (AREA)
  • Brushes (AREA)
  • Cameras Adapted For Combination With Other Photographic Or Optical Apparatuses (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Adornments (AREA)
EP86115498A 1985-11-16 1986-11-08 Plaque de cuisson électrique et dispositif pour sa connexion Expired - Lifetime EP0224098B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86115498T ATE54530T1 (de) 1985-11-16 1986-11-08 Elektrokochplatte sowie vorrichtung fuer deren anschluss.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853540816 DE3540816A1 (de) 1985-11-16 1985-11-16 Elektrokochplatte sowie vorrichtung fuer deren anschluss
DE3540816 1985-11-16

Publications (2)

Publication Number Publication Date
EP0224098A1 true EP0224098A1 (fr) 1987-06-03
EP0224098B1 EP0224098B1 (fr) 1990-07-11

Family

ID=6286259

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86115498A Expired - Lifetime EP0224098B1 (fr) 1985-11-16 1986-11-08 Plaque de cuisson électrique et dispositif pour sa connexion

Country Status (9)

Country Link
US (1) US4818846A (fr)
EP (1) EP0224098B1 (fr)
JP (1) JPS62123684A (fr)
AT (1) ATE54530T1 (fr)
AU (2) AU6514186A (fr)
DE (2) DE3540816A1 (fr)
ES (1) ES2016243B3 (fr)
YU (1) YU193086A (fr)
ZA (1) ZA868608B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0307630A1 (fr) * 1987-08-27 1989-03-22 E.G.O. Elektro-Geräte Blanc u. Fischer Plaque de cuisson
EP0432470A2 (fr) * 1989-12-12 1991-06-19 Bosch-Siemens HausgerÀ¤te GmbH Pièce de connexion (protecteur) pour une plaque chauffante d'une cuisinière électrique
EP4008964A1 (fr) * 2020-12-03 2022-06-08 Electrolux Appliances Aktiebolag Composant électrique, appareil ménager et procédé de fabrication associé

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3540816A1 (de) * 1985-11-16 1987-05-21 Ego Elektro Blanc & Fischer Elektrokochplatte sowie vorrichtung fuer deren anschluss
DE3728528A1 (de) * 1987-08-27 1989-03-09 Ego Elektro Blanc & Fischer Elektrokochplatten-anschlussstueck
DE8712088U1 (de) * 1987-09-05 1987-10-22 E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen Elektro-Kochplatte
US4993553A (en) * 1988-02-09 1991-02-19 E.G.O. Elektro Gerate Blanc U. Fischer Electric hotplate stacking aid
DE4205086C2 (de) * 1992-02-17 1998-09-17 Belzig Elektrowaerme Gmbh Klemmstein für den elektrischen Anschluß von Elektrokochplatten
DE102007017456A1 (de) * 2007-04-04 2008-10-09 E.G.O. Elektro-Gerätebau GmbH Anschlussvorrichtung für eine Elektrokochplatte und Elektrokochplatte

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2442717A1 (de) * 1974-09-06 1976-03-18 Karl Fischer Elektrische heizplatte fuer elektroherde
DE2515905A1 (de) * 1975-04-11 1976-10-21 Karl Fischer Temperaturbegrenzer fuer eine elektrokochplatte
US4029896A (en) * 1975-10-22 1977-06-14 Electro-Therm, Inc. Terminal housing for an electrical resistance heater
FR2371118A1 (fr) * 1976-11-13 1978-06-09 Ego Elektro Blanc & Fischer Piece de connexion pour le branchement electrique de plaques chauffantes electriques de cuisson
EP0024621A1 (fr) * 1979-08-17 1981-03-11 Karl Fischer Plaque de cuisson électrique
EP0102015A2 (fr) * 1982-08-25 1984-03-07 E.G.O. Elektro-Geräte Blanc u. Fischer Plaque de cuisson électrique
EP0113923A2 (fr) * 1983-01-15 1984-07-25 E.G.O. Elektro-Geräte Blanc u. Fischer Plaque de cuisson électrique

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB424291A (en) * 1933-10-23 1935-02-19 Gen Electric Co Ltd Improvements in or relating to electric hotplates and the like
AT196981B (de) * 1956-06-21 1958-04-10 Austria Email Ag Elektrisch beheizte Kochplatte
DE1104087B (de) * 1957-06-06 1961-04-06 Karl Fischer Elektrische Kochplatte mit einem Temperaturbegrenzungselement
DE1270201B (de) * 1961-10-18 1968-06-12 Ego Elektro Blanc & Fischer Elektrische Massekochplatte
DE1165175B (de) * 1962-02-01 1964-03-12 Karl Fischer Massekochplatte mit einem in einem mittleren Durchbruch des Plattenkoerpers in Achsrichtung federnd angeordneten scheibenfoermigen Temperaturfuehler eines hydraulischen Reglers
DE1291032B (de) * 1962-09-20 1969-03-20 Ego Elektro Blanc & Fischer Elektrische Massekochplatte
DE3540816A1 (de) * 1985-11-16 1987-05-21 Ego Elektro Blanc & Fischer Elektrokochplatte sowie vorrichtung fuer deren anschluss

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2442717A1 (de) * 1974-09-06 1976-03-18 Karl Fischer Elektrische heizplatte fuer elektroherde
DE2515905A1 (de) * 1975-04-11 1976-10-21 Karl Fischer Temperaturbegrenzer fuer eine elektrokochplatte
US4029896A (en) * 1975-10-22 1977-06-14 Electro-Therm, Inc. Terminal housing for an electrical resistance heater
FR2371118A1 (fr) * 1976-11-13 1978-06-09 Ego Elektro Blanc & Fischer Piece de connexion pour le branchement electrique de plaques chauffantes electriques de cuisson
EP0024621A1 (fr) * 1979-08-17 1981-03-11 Karl Fischer Plaque de cuisson électrique
EP0102015A2 (fr) * 1982-08-25 1984-03-07 E.G.O. Elektro-Geräte Blanc u. Fischer Plaque de cuisson électrique
EP0113923A2 (fr) * 1983-01-15 1984-07-25 E.G.O. Elektro-Geräte Blanc u. Fischer Plaque de cuisson électrique

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0307630A1 (fr) * 1987-08-27 1989-03-22 E.G.O. Elektro-Geräte Blanc u. Fischer Plaque de cuisson
US4922080A (en) * 1987-08-27 1990-05-01 E.G.O. Elektro-Gerate Blanc U. Fischer Cooker plate
EP0432470A2 (fr) * 1989-12-12 1991-06-19 Bosch-Siemens HausgerÀ¤te GmbH Pièce de connexion (protecteur) pour une plaque chauffante d'une cuisinière électrique
EP0432470A3 (en) * 1989-12-12 1992-12-23 Bosch-Siemens Hausgeraete Gmbh Connecting piece (protector) for a heating plate of an electric cooking range
EP4008964A1 (fr) * 2020-12-03 2022-06-08 Electrolux Appliances Aktiebolag Composant électrique, appareil ménager et procédé de fabrication associé

Also Published As

Publication number Publication date
AU4261389A (en) 1990-02-01
DE3672571D1 (de) 1990-08-16
YU193086A (en) 1988-04-30
ATE54530T1 (de) 1990-07-15
EP0224098B1 (fr) 1990-07-11
AU6514186A (en) 1987-05-21
AU622715B2 (en) 1992-04-16
US4818846A (en) 1989-04-04
ZA868608B (en) 1987-06-24
DE3540816A1 (de) 1987-05-21
ES2016243B3 (es) 1990-11-01
JPS62123684A (ja) 1987-06-04

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