EP0177811B1 - Control switch - Google Patents

Control switch Download PDF

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Publication number
EP0177811B1
EP0177811B1 EP85111790A EP85111790A EP0177811B1 EP 0177811 B1 EP0177811 B1 EP 0177811B1 EP 85111790 A EP85111790 A EP 85111790A EP 85111790 A EP85111790 A EP 85111790A EP 0177811 B1 EP0177811 B1 EP 0177811B1
Authority
EP
European Patent Office
Prior art keywords
control switch
contact
switching
control
contacts
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP85111790A
Other languages
German (de)
French (fr)
Other versions
EP0177811A1 (en
Inventor
Willi Essig
Heinz Petri
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 AT85111790T priority Critical patent/ATE63401T1/en
Publication of EP0177811A1 publication Critical patent/EP0177811A1/en
Application granted granted Critical
Publication of EP0177811B1 publication Critical patent/EP0177811B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
    • H01H89/04—Combination of a thermally actuated switch with a manually operated switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/54—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having at least five or an unspecified number of operative positions
    • H01H19/56—Angularly-movable actuating part carrying contacts, e.g. drum switch
    • H01H19/58—Angularly-movable actuating part carrying contacts, e.g. drum switch having only axial contact pressure, e.g. disc switch, wafer switch
    • H01H19/585—Angularly-movable actuating part carrying contacts, e.g. drum switch having only axial contact pressure, e.g. disc switch, wafer switch provided with printed circuit contacts

Definitions

  • the invention relates to a control switch for electric heating devices which have a switching device which can be actuated via a switching shaft, the control switch to be connected to the switching device to form a structural unit comprising a plurality of mechanical switching contacts which are closed and opened as a function of the angle of rotation for controlling an associated device as a function of the Rotary positions of the selector shaft has un, wherein a contact disk carrying the rotatable switch contacts is to be driven by the selector shaft.
  • FR-A-2 492 553 discloses a control switch of this type which is structurally inseparably integrated with a switching device and with which a program set in each case with the switching device can be displayed. Its contact disk is supported by the selector shaft, while fixed mating contact tracks are attached to the housing.
  • the control switch is not suitable for retrofitting to existing switching devices.
  • the invention has for its object to provide a control switch of the type mentioned, which is suitable for a robust design despite a variety of switching functions, in a simple manner and optionally a switching device to be assigned and a reliable control guaranteed.
  • control switch can be retrofitted to the switching device as a special assembly having a housing and the contact disk is to be connected to the control switch via a mounting coupling, the mounting coupling having a separate coupling ring which is connected to the contact disk in a rotationally locking manner with a Switch shaft profile adapted through opening that the non-rotatable switching contacts are arranged on a separate contact board which is guided and mounted in the housing and that the contact disk is supported on the contact board via an annular shoulder.
  • the control switch can subsequently be combined with the switching device to form a structural unit in such a way that the large number of its switching positions is precisely assigned to that of the switching device, without the switching device having to be structurally changed for this purpose.
  • the robust mechanical contacts with low electrical voltage for example with low current or with very low powers, can be used to reliably control the display device, for example as an optical display by a group of light-emitting diodes, in direct dependence on the angular position of the control shaft, whereby there is practically no additional effort with regard to assembly, since the control switch can be assembled as a structural unit together with the power control unit.
  • control switch in particular as a disc-like flat assembly, is to be placed on the outside of the switching device and connected to its switching shaft in the manner of a plug connection, so that there is a particularly simple assembly and a clear and compact design of the unit.
  • the coupling can be connected in a rotationally fixed manner to the rotatable switching contact, so that no additional transmission or. Transmission links are required.
  • a further significant simplification of the structure can be achieved in that the clutch is axially aligned with the selector shaft, ie directly with the selector shaft without additional transmission or transmission elements being required is connectable, which can be achieved with a structurally simple design in that the control switch has a passage opening through it for the passage of the selector shaft and the coupling lies between the ends of the passage opening in its axis, the coupling member of the coupling delimiting a section of the passage opening can.
  • control switch For easy assembly of the control switch, it has on one side fastening members for fastening between the power control unit and a device cover, preferably projecting eyes on the housing, with threaded holes for fastening on the cover, so that the control switch therefore has a mounting or support bracket for the one unit forms with it connected switching device, which in turn requires no additional attachment to the device.
  • control switch is at least partially, in particular the housing and / or a contact disk made of insulating material, preferably two housing parts forming the housing are braced against one another with a flat bracket arranged on a housing side, sunk, so that they are kept very tightly closed can be.
  • the control switch is characterized by a support of the control switch which can be preassembled on the switching device, with connecting members for the control switch, the support, in particular formed by the flat bracket, preferably engaging openings for housing bolts, such as screws, has which hold the housing parts of the control switch together and furthermore, in particular, heads of mounting bolts assigned to the switching device of the carrier lie in recesses in the housing of the control switch.
  • the switching contacts are formed by sliding contacts offset with respect to one another, which are preferably located in a plane perpendicular to a switching axis, that is to say end contacts, which require very little space.
  • the switching contacts can be accommodated in an extremely narrow space if they are arranged in a circular arc coaxially on the contact board around the switching axis and their circular arc ends are staggered by an arc angle, so that they move from the switching contact of the contact disk after corresponding arc angle rotations and after touched or released again.
  • a rotatable contact disc is mounted in a housing of the control switch, the switching contact of which runs on the contact tracks of a contact plate fixed to the housing, so that the entire control switch can be designed flat and thus very space-saving.
  • the preferably circular contact disk penetrates the contact board and / or the housing part adjacent to it with a sleeve-shaped bearing sleeve. If the contact disk on its side facing away from the contact board is guided in a bearing opening of the associated housing part with a flat bearing shoulder, in particular larger in diameter than the bearing sleeve, this design means that practically all parts of the control switch are centered against one another with respect to the switch axis of rotation so that the mechanical Contacts can be closed or opened depending on the angle of rotation, even with a spatially very compact design with high repeatability.
  • the contact disk is guided in the housing on its circumference, preferably in the region of two diametrically opposite corner zones of the housing, which is square in particular in axial view, the edge dimension of the Housing only needs to be slightly larger than the outer diameter of the contact disk.
  • the contact disk is supported at least in the area of its switching contact with its end face facing away from the contact board essentially over the entire surface of an axial bearing surface of the housing.
  • a housing part close to the circumference of the contact disk has an edge web which closely surrounds this and for alignment the contact board, on the head edge of which the other, preferably essentially plate-shaped, housing part rests, the contact board resting on the inside of this housing part, so that their axial play is precisely defined in a simple manner.
  • a particularly simple, rotationally locking and releasable type of plug-in connection or releasable connection of the contact disk to the selector shaft can be achieved in that the contact disk has a coupling member for the selector shaft in its axial bore, in particular in a recess deviating from the circular shape on the Has inserted, rotatably and centeredly engaging into the recess coupling ring, which can thus consist of a different material than the insulating material of the contact disk, for example metal, such as steel.
  • the contact board has a plug tab led out of the housing with separate plug contacts for each switching contact provided on the board, preferably the contact board with a projection which forms the plug tab and lies in its plane an interruption of the edge web is guided out of the housing, so that no separate plug component is required for the connection of the switching contacts, but rather the plug tab is formed directly by the contact board, which is additionally formed by the plug tab led out of an opening from the housing is precisely defined in relation to the housing.
  • the contact board can be made extremely flat if the switching contacts and / or the plug contacts are designed in the manner of printed circuits, preferably arranged on the contact board, which also results in very simple manufacture.
  • the control switch according to the invention is particularly suitable for arrangement on steplessly actuatable power control devices, energy regulators or the like of electrical heating devices.
  • electrical heating devices such as cookers, ovens or grills, hot water boilers and similar devices, particularly used in the household, are mostly switched by angle-dependent circuit breakers, such as clocking power control devices, energy or temperature controllers, multi-cycle, in particular seven-cycle switches or the like. , set to the desired heating output, whereby a stepless or a gradual setting is possible.
  • angle-dependent circuit breakers such as clocking power control devices, energy or temperature controllers, multi-cycle, in particular seven-cycle switches or the like.
  • the respectively selected setting can be recognized or read clearly and easily visible on a display device. Tries, To effect this display by electronic or contactless display devices have so far been unsatisfactory, since the relatively harsh operating conditions of these devices can quickly lead to inoperability, for example of the display device.
  • control switch is also suitable, for example, for controlling an electronic power control device, which can be provided for an inductively heated hob or another additional device for a cooker or other device.
  • an energy regulator or a clocking power control device is provided as a switch connected to the control switch to form a unit, this unit can optionally be used to control a conventional hob with radiant heater heating or an electric hotplate via the energy regulator or the like, in which case the Control switch can be out of function; or it can be controlled via the same actuation handle, for example the rotary knob, an inductively heated hotplate or the like, in which case the energy regulator or the like can then be out of function.
  • both functions i.e. the energy regulator or the like.
  • control switch can be effective at the same time or provided for control processes if, for example, two or more control processes are to take place in dependence on one another in the area of a device;
  • control switch could be used to control the automatic heating of the hotplate, which is otherwise controlled by the energy regulator or the like, additional heating for an oven tube or another additional function, such as that of a blower, the device or an additional device.
  • control switch 1 according to the invention is shown with solid lines, while the circuit breaker 2 connected to the control switch 1 to form a structural unit, the rotary head 3 assigned to it, a device cover 4 for fastening the switches and a device 5 assigned to the control switch 1 in the form of a optical display device are shown in dash-dotted lines.
  • the circuit breaker 2 can be, for example, a temperature controller according to DE-A-3 238 955 or a power control device according to DE-A-2 625 716, to which reference is made here for the purpose of the detailed description.
  • the control switch 1 has a two-part, almost plate-shaped flat and square-limited housing 6, the two housing parts 7, 8 of which are assembled with sides perpendicular to the switching axis 9 and between these sides a flat cavity for receiving a contact disk 10 and one directly to it form adjacent contact board 11, which is only indicated by dash-dotted lines in FIG. 4 for the sake of clarity.
  • the circular disk-shaped contact disk 10 which has a constant thickness up to its outer circumference, has on one end face a cylindrical sleeve-shaped bearing sleeve 12 lying in the switching axis 9, the inside diameter of which corresponds to the outside diameter of a switch shaft 13 for actuating the circuit breaker 2 by means of the rotary knob 3 corresponds and whose outer diameter is only slightly larger.
  • This bearing sleeve 12 passes through the housing part 8 in the region of a bearing opening 14, which is slightly longer compared to the other thickness of the housing part 8 in that the housing part 8 is provided in the region of the bearing opening 14 with a strip-shaped zone 15 on the outside.
  • the bearing sleeve 12 also passes through the contact plate 11, which has a corresponding through hole for this purpose.
  • the contact board 11 is thus essentially over the entire surface on the inside of the plate-shaped housing part 8, while they are after the other Is supported on an annular shoulder 16 of the contact disk 10, which is provided in the transition region between the bearing sleeve 12 and the annular disk-shaped zone of the contact disk 10 and protrudes from the associated end face 17 of the annular disk-shaped zone of the contact disk 10 by only a fraction of a millimeter.
  • the actual base body of the contact disk 10 touches the contact plate 11 with little friction, essentially only in the area of the annular shoulder 16, while the remaining end face 17 lies at a small gap distance from the associated surface 18 of the contact plate 11.
  • the other end face 19 of the annular disk-shaped part of the contact plate 11 lies essentially over the entire surface of a recessed bottom surface of the housing part 7, this bottom surface thus forming an axial bearing surface 20 for the contact disk 10.
  • the contact plate 10 On the front side facing away from the bearing sleeve 12, the contact plate 10 furthermore has a cylindrical flat bearing shoulder 21 which is larger in diameter than the bearing sleeve 12 and which is guided in a bearing opening 22 of the housing part 7 which is adapted to it both in terms of the outer diameter and in terms of the axial extent which forms a recessed zone of the thrust bearing surface 20.
  • the housing part 7 On its side facing the housing part 7, the housing part 7 has an edge web 23 which extends over all corners of the housing part and whose top edge 2 ′ 4 forms the only contact surface of the housing part 7 for the housing part 8.
  • the contact board 11 is adapted to the inner contour of the edge web 22 in such a way that it lies only with an extremely small clearance between these inner surfaces with their outer edges, with their housing part 7 facing side rests only in the area of the housing corners on corresponding shoulder surfaces 25, 26 of the housing part 7.
  • these shoulder surfaces 25 extend to the axial bearing surface 20, such that the edge surfaces of the projections forming these shoulder surfaces 25 facing the switching axis 9 form arcuate guide surfaces 27 for the circumference 28 of the contact disk 10.
  • both housing parts 7, 8 are penetrated by a through hole that is perpendicular to the parting plane of the housing, the through holes of both housing parts 7, 8 being aligned with one another when the housing is assembled, the through holes of housing part 7 being larger than those of housing part 8, while the through bores of the housing part 8 are delimited by sleeve-shaped centering plugs 29 which protrude beyond the inside of the housing part 8 and fit into the through bores of the housing part 7 essentially without play. In the area of the through holes, the corners of the contact board 11 are left free.
  • the contact board 11 has, symmetrically to an outer edge, a tongue-like rectangular extension lying in its plane and formed in one piece with it, which forms a connector tab 30 protruding from the housing 6.
  • This plug lug 30 is led out of the housing through an interruption 31 of the edge web 23, the bottom surface of this interruption 31 lying in the plane of the shoulder surfaces 25, 26.
  • the contact board 11 On the side facing the contact disk 10, the contact board 11 is provided with switching contacts 32, which are mounted concentrically in the form of a circle around the switching axis 9 in the manner of printed circuits on the contact board 11 and the one, freely ending circular arc ends 33 of which are graduated with respect to one another by arc angles are offset. The other ends are each electrically conductively connected to a plug contact 34, with all plug contacts 34 being provided next to one another on the plug tab 30.
  • a radially strip-shaped switching contact 35 On the associated side of the contact disk 10, a radially strip-shaped switching contact 35, which grinds on the opposite side of the contact board 11, is arranged such that it completely engages over the radial field on which the switching contacts 32 are provided.
  • the switching contacts 32 gradually come into contact with the switching contact 35, as a result of which the circuits associated with the plug contacts 34 are closed in succession.
  • the plug contacts 34 are provided on the connector lug 30 in the same arrangement and size as on a connector lug of the optical display device 5, so that with a cable harness that has the same plug at both ends, the display switch formed by the control switch 1 with the display device 5 can be electrically connected.
  • the display device 5 has a number of several, in the exemplary embodiment shown twelve light-emitting diodes 36 which are provided in a clearly visible manner in the region of a window 37 of the diaphragm 4 located next to the rotary knob 3.
  • the contact disk 10 has a coupling 38 which is provided in the axial bore 39 of the contact disk 10.
  • the clutch 38 is essentially formed by an annular disk-shaped coupling member 40, which is hexagonally delimited on the outer circumference in the manner of a threaded nut and is inserted into a recess in the end face of the bearing projection 21 adapted to this outer shape, such that the coupling member 40 is axially secured between the bottom surface of the recess 41 and the bottom surface of the bearing opening 22 is held.
  • the through opening of the coupling member 38 has a cross section adapted to the flattened cross section of the bearing shaft 13 and forms a section of a through opening 42 with a diameter adapted to the switch shaft 13, which passes through the entire control switch 1 in the switching axis 9. If the control switch 1 is attached to the circuit breaker 2, its switch shaft 13 passes through the control switch 1, which is thus actuated synchronously with the circuit breaker 2.
  • the control switch 1 has on the outside of the housing part 7 associated with the circuit breaker 2 a support 43 made of sheet metal which is essentially formed by a flat bracket 44 and which, in view of the associated housing side, is of essentially rectangular Z-shape, the central web parallel to the zone 15 lies and has about the same width as this. Both the central web and the end webs of the flat bracket 44 are arranged sunk by its thickness in the associated housing side in such a way that they do not protrude beyond the housing.
  • the ends of the flat bracket end webs which are in the form of approximately square screw plates 45 in the region of the corners of the housing having the centering plug 29, are opposite the other flat bracket 44 to the other housing part 8 by Multiple times their thickness offset by appropriate skirts and engage in correspondingly again countersunk zones on the outside of the housing part 7.
  • These screw plates 45 have threaded openings for the engagement of housing bolts 46, which pass through the centering plug 29 and lie with their heads on the outside of the housing part 8, such that the housing parts 7, 8 are braced against one another with the two diagonally lying housing bolts 46.
  • the carrier 43 Before the housing parts 7, 8 are fastened to the carrier 43, which likewise has a continuation of the through opening 42 located in the switching axis 9, the carrier 43 becomes in shape on both sides of the switching axis 9 or in the transition area to the end webs of the flat bracket 44 with mounting bolts 47 fixed by metric screws on the associated side of the circuit breaker 2.
  • the heads 48 of the mounting bolts 47 passing through corresponding through openings of the carrier 43 then rest on the side of the carrier 43 remote from the circuit breaker 2.
  • Corresponding cylindrical blind-hole depressions 49 are provided in the associated side of the housing 6 of the control switch 1 for receiving these heads 48, that is to say in the exemplary embodiment shown in the bottom surface of the recess which receives the flat bracket 44.
  • the housing 6 of the control switch 1 has two eyes 50 on both sides of the switching axis 9 with threaded bores 51, wherein the two other cylindrical eyes 50 protrude furthest from the associated side of the control switch 1 and serve to fasten the structural unit consisting of the control switch 1 and the circuit breaker 2 to the inside of the panel 4.

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  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Control Of Eletrric Generators (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

A control switch (1) having switch contacts, for example, for a group of light-emitting diodes (36), which switch contacts are completely covered externally and are mechanically opened and closed as a function of the angle of rotation, is directly combined with a power control unit (2) by flanges to form a structural unit, such that the switch shaft (13) of the power control unit (2) also operates the control switch (1) synchronously, the control switch (1) being mounted in the manner of an auxiliary switch. The control switch (1) is considerably flatter than the power control unit (2) so that it fits between the power control unit (2) and an equipment aperture (4) without any significant increase in the space requirement. <IMAGE>

Description

Die Erfindung betrifft einen Steuerschalter für Elektrowärmegeräte, die ein über eine Schaltwelle betätigbares Schaltgerät aufweisen, wobei der mit dem Schaltgerät zu einer Baueinheit zu verbindende Steuerschalter eine Mehrzahl mechanischer, drehwinkelabhängig zu schließender und zu öffnender Schalt-Kontakte zur Ansteuerung einer zugeordneten Vorrichtung in Abhängigkeit von den Drehstellungen der Schaltwelle aufweist un wobei eine, die drehbaren Schalt-Kontakte tragende Kontaktscheibe von der Schaltwelle anzutreiben ist.The invention relates to a control switch for electric heating devices which have a switching device which can be actuated via a switching shaft, the control switch to be connected to the switching device to form a structural unit comprising a plurality of mechanical switching contacts which are closed and opened as a function of the angle of rotation for controlling an associated device as a function of the Rotary positions of the selector shaft has un, wherein a contact disk carrying the rotatable switch contacts is to be driven by the selector shaft.

Durch die FR-A-2 492 553 ist ein mit einem Schaltgerät baulich untrennbar integrierter Steuerschalter dieser Art bekannt geworden, mit welchem ein jeweils mit dem Schaltgerät eingestelltes Programm angezeigt werden kann. Seine Kontaktscheibe wird durch die Schaltwelle gelagert, während feste Gegenkontaktbahnen am Gehäuse angebracht sind. Der Steuerschalter ist nicht dafür geeignet, nachträglich an bereits vorhandene Schaltgeräte angefügt zu werden.FR-A-2 492 553 discloses a control switch of this type which is structurally inseparably integrated with a switching device and with which a program set in each case with the switching device can be displayed. Its contact disk is supported by the selector shaft, while fixed mating contact tracks are attached to the housing. The control switch is not suitable for retrofitting to existing switching devices.

Der Erfindung liegt die Aufgabe zu Grunde, einen Steuerschalter der genannten Art zu schaffen, der bei robuster Ausbildung trotz einer Vielzahl von Schaltfunktionen dafür geeignet ist, in einfacher Weise und wahlweise einem Schaltgerät zugeordnet werden zu können und eine zuverlässige Steuerung gewährleistet.The invention has for its object to provide a control switch of the type mentioned, which is suitable for a robust design despite a variety of switching functions, in a simple manner and optionally a switching device to be assigned and a reliable control guaranteed.

Diese Aufgabe wird dadurch gelöst, daß der Steuerschalter als eine ein Gehäuse aufweisende gesondere Baugruppe nachträglich an dem Schaltgerät montierbar ist und die Kontaktscheibe über eine Montagekupplung mit dem Steuerschalter zu verbinden ist, wobei die Montagekupplung einen gesonderten, mit der Kontaktscheibe drehschlüssig verbundenen Kupplungsring mit einer dem Schaltwellenprofil angepaßten Durchgangsöffnung aufweist, daß die nichtdrehbaren Schalt-Kontakte auf einer gesonderten Kontaktplatine angeordnet sind, die in dem Gehäuse geführt und gelagert ist und daß die Kontaktscheibe über eine Ringschulter an der Kontaktplatine abgestützt ist.This object is achieved in that the control switch can be retrofitted to the switching device as a special assembly having a housing and the contact disk is to be connected to the control switch via a mounting coupling, the mounting coupling having a separate coupling ring which is connected to the contact disk in a rotationally locking manner with a Switch shaft profile adapted through opening that the non-rotatable switching contacts are arranged on a separate contact board which is guided and mounted in the housing and that the contact disk is supported on the contact board via an annular shoulder.

Dadurch kann der Steuerschalter nachträglich so mit dem Schaltgerät zu einer Baueinheit zusammengefaßt werden, daß die Vielzahl seiner Schaltstellungen denen des Schaltgeräts genau zugeordnet ist, ohne daß hierfür das Schaltgerät baulich verändert werden muß. Dabei kann über die robusten mechanischen Kontakte mit geringer elektrischer Spannung, also beispielsweise mit Schwachstrom, bzw. mit sehr niedrigen Leistungen, die beispielsweise als optische Anzeige durch eine Gruppe von Leuchtdioden gebildete Anzeige-Vorrichtung in unmittelbarer Abhängigkeit der Drehwinkelstellung der Schaltwelle zuverlässig angesteuert werden, wobei sich hinsichtlich der Montage praktisch kein zusätzlicher Aufwand ergibt, da der Steuerschalter als Baueinheit gemeinsam mit dem Leistungssteuergerät montierbar ist.As a result, the control switch can subsequently be combined with the switching device to form a structural unit in such a way that the large number of its switching positions is precisely assigned to that of the switching device, without the switching device having to be structurally changed for this purpose. The robust mechanical contacts with low electrical voltage, for example with low current or with very low powers, can be used to reliably control the display device, for example as an optical display by a group of light-emitting diodes, in direct dependence on the angular position of the control shaft, whereby there is practically no additional effort with regard to assembly, since the control switch can be assembled as a structural unit together with the power control unit.

Nach einer Ausführungsform der Erfindung ist der Steuerschalter, insbesondere als scheibenartig flache Baugruppe, an die Außenseite des Schaltgeräts anzulegen und mit dessen Schaltwelle nach Art einer Steckerverbindung zu verbinden, so daß sich eine besonders einfache Montage und eine übersichtliche sowie kompakte Ausbildung der Baueinheit ergibt.According to one embodiment of the invention, the control switch, in particular as a disc-like flat assembly, is to be placed on the outside of the switching device and connected to its switching shaft in the manner of a plug connection, so that there is a particularly simple assembly and a clear and compact design of the unit.

Zur weiteren Vereinfachung des Aufbaues kann die Kupplung drehfest mit dem drehbaren Schalt-Kontakt verbunden sein, so daß zwischen diesem und der Kupplung keine zusätzlichen Übertragungs-bzw. Getriebeglieder erforderlich sind. Eine weitere wesentliche Vereinfachung des Aufbaues kann dadurch erzielt werden, daß die Kupplung achsgleich zur Schaltwelle liegt, d.h., ohne daß zusätzliche Übertragungs- bzw. Getriebeglieder erforderlich sind, unmittelbar mit der Schaltwelle verbindbar ist, was bei einer baulich einfachen Gestaltung dadurch erzielt werden kann, daß der Steuerschalter eine ihn durchsetzende Durchgangsöffnung für die Durchführung der Schaltwelle aufweist und die Kupplung zwischen den Enden der Durchgangsöffnung in deren Achse liegt, wobei das Kupplungsglied der Kupplung einen Abschnitt der Durchgangsöffnung begrenzen kann.To further simplify the construction, the coupling can be connected in a rotationally fixed manner to the rotatable switching contact, so that no additional transmission or. Transmission links are required. A further significant simplification of the structure can be achieved in that the clutch is axially aligned with the selector shaft, ie directly with the selector shaft without additional transmission or transmission elements being required is connectable, which can be achieved with a structurally simple design in that the control switch has a passage opening through it for the passage of the selector shaft and the coupling lies between the ends of the passage opening in its axis, the coupling member of the coupling delimiting a section of the passage opening can.

Zur einfachen Montage des Steuerschalters weist dieser an einer Seite Befestigungsglieder zur Befestigung zwischen dem Leistungssteuergerät und einer Geräteblende, vorzugsweise am Gehäuse vorstehende Augen mit Gewindebohrungen zur Befestigung an der Blende auf, so daß also der Steuerschalter eine Befestigungs- bzw. Tragkonsole für das zu einer Baueinheit mit ihm verbundenen Schaltgerät bildet, welches seinerseits keiner zusätzlichen Befestigung am Gerät bedarf.For easy assembly of the control switch, it has on one side fastening members for fastening between the power control unit and a device cover, preferably projecting eyes on the housing, with threaded holes for fastening on the cover, so that the control switch therefore has a mounting or support bracket for the one unit forms with it connected switching device, which in turn requires no additional attachment to the device.

Zur weiteren Erhöhung der Funktionssicherheit besteht der Steuerschalter wenigstens teilweise, insbesondere das Gehäuse und/oder eine Kontaktscheibe aus Isolierwerkstoff, wobei vorzugsweise zwei das Gehäuse bildende Gehäuseteile mit einem auf einer Gehäuseseite liegenden, versenkt angeordneten Flachbügel gegeneinander verspannt sind, so daß sie sehr dicht geschlossen gehalten werden können.To further increase the functional reliability, the control switch is at least partially, in particular the housing and / or a contact disk made of insulating material, preferably two housing parts forming the housing are braced against one another with a flat bracket arranged on a housing side, sunk, so that they are kept very tightly closed can be.

Zur weiteren wesentlichen Vereinfachung der Zusammenfassung des Schaltgerätes und des Steuerschalters zu einer Baueinheit ist der Steuerschalter gekennzeichnet durch einen am Schaltgerät vormontierbaren Träger des Steuerschalters mit Verbindungsgliedern für den Steuerschalter, wobei der, insbesondere durch den Flachbügel gebildete Träger, vorzugsweise Eingriffsöffnungen für Gehäusebolzen, wie Schrauben, aufweist, welche die Gehäuseteile des Steuerschalters zusammenhalten und wobei ferner insbesondere Köpfe von, dem Schaltgerät zugeordneten, Montierbolzen des Trägers in Vertiefungen des Gehäuses des Steuerschalters liegen. Dadurch kann der Träger zunächst am Schaltgerät montiert werden, wonach der zusammengesetzte Steuerschalter, der in seinem zusammengesetzten Zustand noch nicht durch Befestigungsglieder gesichert ist, an dem Träger angesetzt und mit den Gehäusebolzen einerseits am Träger und damit am Schaltgerät befestigt und andererseits in seinem zusammengesetzten Zustand gesichert wird.To further simplify the combination of the switching device and the control switch into one structural unit, the control switch is characterized by a support of the control switch which can be preassembled on the switching device, with connecting members for the control switch, the support, in particular formed by the flat bracket, preferably engaging openings for housing bolts, such as screws, has which hold the housing parts of the control switch together and furthermore, in particular, heads of mounting bolts assigned to the switching device of the carrier lie in recesses in the housing of the control switch. This allows the carrier to be mounted on the switching device first after which the assembled control switch, which is not yet secured in its assembled state by fastening elements, is attached to the carrier and is fastened on the one hand to the carrier and thus to the switching device with the housing bolts and on the other hand is secured in its assembled state.

Bei einer sehr einfachen Ausführungsform sind die Schaltkontakte durch gegeneinander winkelversetzte Schleifkontakte gebildet, die vorzugsweise in einer zu einer Schaltachse rechtwinkligen Ebene liegen, also stirnseitige Kontakte sind, welche einen sehr geringen Raumbedarf haben. Die Schalt-Kontakte können auf extrem engem Raum untergebracht werden, wenn sie an der Kontaktplatine um die Schaltachse kreisbogenförmig koaxial angeordnet und ihre Kreisbogen-Enden abgestuft um Bogenwinkel gegeneinander versetzt sind, so daß sie vom Schalt-Kontakt der Kontaktscheibe nach entsprechenden Bogenwinkel-Drehungen nach und nach berührt bzw. wieder freigegeben werden.In a very simple embodiment, the switching contacts are formed by sliding contacts offset with respect to one another, which are preferably located in a plane perpendicular to a switching axis, that is to say end contacts, which require very little space. The switching contacts can be accommodated in an extremely narrow space if they are arranged in a circular arc coaxially on the contact board around the switching axis and their circular arc ends are staggered by an arc angle, so that they move from the switching contact of the contact disk after corresponding arc angle rotations and after touched or released again.

Nach einer weiteren Ausführungsform der Erfindung ist in einem Gehäuse des Steuerschalters eine drehbare Kontaktscheibe gelagert, deren Schalt-Kontakt an den Kontaktbahnen einer gehäusefesten Kontaktplatine läuft, so daß der gesamte Steuerschalter scheibenartig flach und damit sehr raumsparend ausgebildet werden kann.According to a further embodiment of the invention, a rotatable contact disc is mounted in a housing of the control switch, the switching contact of which runs on the contact tracks of a contact plate fixed to the housing, so that the entire control switch can be designed flat and thus very space-saving.

Zur sicheren Lagerung der Kontaktscheibe bei kompakten Abmessungen des Schalters durchsetzt die, vorzugsweise kreisrunde, Kontaktscheibe die Kontaktplatine und/oder den zu dieser benachbarten Gehäuseteil mit einer hülsenförmigen Lagermuffe. Ist die Kontaktscheibe an ihrer von der Kontaktplatine abgekehrten Seite mit einem, insbesondere gegenüber der Lagermuffe im Durchmesser größeren, flachen Lageransatz in einer Lageröffnung des zugehörigen Gehäuseteiles geführt, so sind durch diese Ausbildung praktisch alle Teile des Steuerschalters gegeneinander in Bezug auf die Schalter-Drehachse zentriert, so daß die mechanischen Kontakte auch bei räumlich sehr kompakter Ausbildung mit hoher Wiederholgenauigkeit drehwinkelabhängig geschlossen bzw. geöffnet werden.For safe mounting of the contact disk with compact dimensions of the switch, the preferably circular contact disk penetrates the contact board and / or the housing part adjacent to it with a sleeve-shaped bearing sleeve. If the contact disk on its side facing away from the contact board is guided in a bearing opening of the associated housing part with a flat bearing shoulder, in particular larger in diameter than the bearing sleeve, this design means that practically all parts of the control switch are centered against one another with respect to the switch axis of rotation so that the mechanical Contacts can be closed or opened depending on the angle of rotation, even with a spatially very compact design with high repeatability.

Um trotz genauer Lagerung sowie bei baulich einfacher Ausgestaltung des Schalters eine hohe Leichtgängigkeit des Steuerschalters zu erzielen, ist die Kontaktscheibe in dem Gehäuse an ihrem Umfang, vorzugsweise im Bereich zweier diametral gegenüberliegender Eckzonen des, insbesondere in Axialansicht quadratischen, Gehäuses geführt, wobei das Kantenmaß des Gehäuses nur wenig größer als der Außendurchmesser der Kontaktscheibe zu sein braucht.In order to achieve a high ease of movement of the control switch despite precise storage and with a structurally simple configuration of the switch, the contact disk is guided in the housing on its circumference, preferably in the region of two diametrically opposite corner zones of the housing, which is square in particular in axial view, the edge dimension of the Housing only needs to be slightly larger than the outer diameter of the contact disk.

Zur weiteren Verbesserung der sicheren Anlage des Schaltkontaktes der Kontaktscheibe an den Gegenkontakten der Kontaktplatine ist die Kontaktscheibe wenigstens im Bereich ihres Schaltkontaktes mit ihrer von der Kontaktplatine abgekehrten Stirnseite im wesentlichen ganzflächig an einer Axiallagerfläche des Gehäuses abgestützt.To further improve the secure contact of the switching contact of the contact disk with the mating contacts of the contact board, the contact disk is supported at least in the area of its switching contact with its end face facing away from the contact board essentially over the entire surface of an axial bearing surface of the housing.

In weiterer Ausgestaltung der Erfindung weist ein Gehäuseteil nahe benachbart zum Umfang der Kontaktscheibe einen diese sowie zur Ausrichtung die Kontaktplatine eng umgebenden Randsteg auf, an dessen Kopfkante der andere, vorzugsweise im wesentlichen plattenförmige, Gehäuseteil anliegt, wobei an der Innenseite dieses Gehäuseteiles die Kontaktplatine anliegt, so daß deren Axialspiel auf einfache Weise genau definiert ist.In a further embodiment of the invention, a housing part close to the circumference of the contact disk has an edge web which closely surrounds this and for alignment the contact board, on the head edge of which the other, preferably essentially plate-shaped, housing part rests, the contact board resting on the inside of this housing part, so that their axial play is precisely defined in a simple manner.

Eine besonders einfache, drehschlüssige und nach Art von Steckgliedern montier- bzw. wieder lösbare Verbindung der Kontaktscheibe mit der Schaltwelle kann dadurch erzielt werden, daß die Kontaktscheibe in ihrer Axialbohrung ein Kupplungsglied für die Schaltwelle, insbesondere einen in eine von der Kreisform abweichende Vertiefung an der Stirnseite des Lageransatzes eingelegten, drehschlüssig und zentriert in die Vertiefung eingreifenden Kupplungsring aufweist, der somit aus einem gegenüber dem Isolierwerkstoff der Kontaktscheibe anderen, geeigneten Werkstoff, beispielsweise Metall, wie Stahl, bestehen kann. Eine besonders vorteilhafte Weiterbildung des Erfindungsgegenstandes besteht darin, daß die Kontaktplatine eine aus dem Gehäuse geführte Steckerfahne mit gesonderten Stecker-Kontakten für jeden an der Platine vorgesehenen Schalt-Kontakt aufweist, wobei vorzugsweise die Kontaktplatine mit einem die Steckerfahne bildenden, in ihrer Ebene liegenden Vorsprung durch eine Unterbrechung des Randsteges aus dem Gehäuse geführt ist, so daß für den Anschluß der Schalt-Kontakte kein gesonderter Stecker-Bauteil erforderlich ist, sondern die Steckerfahne unmittelbar durch die Kontaktplatine gebildet ist, welche durch die aus einer Öffnung aus dem Gehäuse geführte Steckerfahne zusätzlich noch genau definiert gegenüber dem Gehäuse ausgerichtet ist.A particularly simple, rotationally locking and releasable type of plug-in connection or releasable connection of the contact disk to the selector shaft can be achieved in that the contact disk has a coupling member for the selector shaft in its axial bore, in particular in a recess deviating from the circular shape on the Has inserted, rotatably and centeredly engaging into the recess coupling ring, which can thus consist of a different material than the insulating material of the contact disk, for example metal, such as steel. A particularly advantageous development of the subject matter of the invention is that the contact board has a plug tab led out of the housing with separate plug contacts for each switching contact provided on the board, preferably the contact board with a projection which forms the plug tab and lies in its plane an interruption of the edge web is guided out of the housing, so that no separate plug component is required for the connection of the switching contacts, but rather the plug tab is formed directly by the contact board, which is additionally formed by the plug tab led out of an opening from the housing is precisely defined in relation to the housing.

Insbesondere die Kontaktplatine kann äußerst flach ausgebildet werden, wenn die Schalt-Kontakte und/oder die Stecker-Kontakte nach Art von gedruckten Schaltungen ausgebildet, vorzugsweise auf der Kontaktplatine angeordnet sind, wodurch sich auch eine sehr einfache Herstellung ergibt.In particular, the contact board can be made extremely flat if the switching contacts and / or the plug contacts are designed in the manner of printed circuits, preferably arranged on the contact board, which also results in very simple manufacture.

Der erfindungsgemäße Steuerschalter eignet sich insbesondere zur Anordnung an stufenlos betätigbaren Leistungssteuergeräten, Energiereglern oder dgl. von Elektrowärme-Geräten. Solche Elektrowärme-Geräte, wie Kochherde, Back- bzw. Grillöfen, Warmwasserboiler und ähnliche, insbesondere im Haushalt benutzte Geräte, werden meist durch drehwinkelabhängige Leistungsschalter, wie taktende Leistungssteuergeräte, Engergie- bzw. Temperaturregler, Mehrtakt-, insbesondere Sieben-Taktschalter oder dgl., auf die gewünschte Heizleistung eingestellt, wobei eine stufenlose oder eine stufenweise Einstellung möglich ist. Bei solchen Geräten besteht z.B. das Bedürfnis, daß die jeweils gewählte Einstellung eindeutig und leicht sichtbar an einer Anzeige-Einrichtung erkannt bzw. abgelesen werden kann. Versuche, diese Anzeige durch elektronische bzw. kontaktlose Anzeige-Einrichtungen zu bewirken, haben bisher wenig befriedigt, da die relativ rauhen Betriebsbedingungen dieser Geräte schnell zur Funktionsuntüchtigkeit beispielweise der Anzeige-Einrichtung führen können.The control switch according to the invention is particularly suitable for arrangement on steplessly actuatable power control devices, energy regulators or the like of electrical heating devices. Such electrical heating devices, such as cookers, ovens or grills, hot water boilers and similar devices, particularly used in the household, are mostly switched by angle-dependent circuit breakers, such as clocking power control devices, energy or temperature controllers, multi-cycle, in particular seven-cycle switches or the like. , set to the desired heating output, whereby a stepless or a gradual setting is possible. In such devices, there is a need, for example, that the respectively selected setting can be recognized or read clearly and easily visible on a display device. Tries, To effect this display by electronic or contactless display devices have so far been unsatisfactory, since the relatively harsh operating conditions of these devices can quickly lead to inoperability, for example of the display device.

Der Steuerschalter eignet sich außer zur Ansteuerung einer Anzeigevorrichtung auch beispielsweise zur Ansteuerung eines elektronischen Leistungssteuergerätes, das für ein induktiv beheiztes Kochfeld oder eine andere Zusatz-Vorrichtung eines Herdes oder eines anderen Gerätes vorgesehen sein kann. Wird in diesem Fall als mit dem Steuerschalter zu einer Baueinheit verbundener Schalter ein Energieregler bzw. ein taktendes Leistungssteuergerät vorgesehen, so kann mit dieser Einheit wahlweise ein herkömmliches Kochfeld mit Strahlheizkörper-Beheizung oder eine Elektrokochplatte über den Energieregler oder dgl. angesteuert werden, wobei dann der Steuerschalter außer Funktion sein kann; oder es kann über dieselbe Betätigungs-Handhabe, beispielsweise den Drehknopf, eine induktiv beheizte Kochstelle oder dgl. angesteuert werden, wobei dann der Energieregler oder dgl. außer Funktion sein kann. Es können aber auch beide Funktionen, d.h. der Energieregler oder dgl. und der Steuerschalter, gleichzeitig wirksam bzw. für Ansteuervorgänge vorgesehen sein, wenn beispielsweise im Bereich eines Gerätes zwei oder mehr Ansteuervorgänge in Abhängigkeit voneinander erfolgen sollen; beispielsweise könnte mit dem Steuerschalter eine Ankochautomatik der ansonsten vom Energieregler oder dgl. gesteuerten Kochstelle, eine Zusatz-Beheizung für eine Backofen-Röhre oder eine andere Zusatz-Funktion, wie die eines Gebläses, des Gerätes oder eines Zusatzgerätes, angesteuert werden.In addition to controlling a display device, the control switch is also suitable, for example, for controlling an electronic power control device, which can be provided for an inductively heated hob or another additional device for a cooker or other device. In this case, if an energy regulator or a clocking power control device is provided as a switch connected to the control switch to form a unit, this unit can optionally be used to control a conventional hob with radiant heater heating or an electric hotplate via the energy regulator or the like, in which case the Control switch can be out of function; or it can be controlled via the same actuation handle, for example the rotary knob, an inductively heated hotplate or the like, in which case the energy regulator or the like can then be out of function. However, both functions, i.e. the energy regulator or the like. and the control switch can be effective at the same time or provided for control processes if, for example, two or more control processes are to take place in dependence on one another in the area of a device; For example, the control switch could be used to control the automatic heating of the hotplate, which is otherwise controlled by the energy regulator or the like, additional heating for an oven tube or another additional function, such as that of a blower, the device or an additional device.

Die Erfindung wird im folgenden mit weiteren Einzelheiten anhand des in den Zeichnungen dargestellten Ausführungsbeispieles näher erläutert.The invention is explained in more detail below with further details with reference to the embodiment shown in the drawings.

Es sind dargestellt in

Fig. 1
ein erfindungsgemäßer Steuerschalter in Draufsicht und eingebautem Zustand,
Fig. 2
der Schalter gemäß Fig. 1 in Ansicht auf die Vorderseite,
Fig. 3
der Schalter gemäß den Figuren 1 und 2, jedoch in Ansicht auf die Rückseite,
Fig. 4
der Schalter gemäß Fig. 2, jedoch bei abgenommenem vorderem Gehäuseteil, und
Fig. 5
ein Schnitt nach der Linie V-V in Fig. 3 in vergrößerter Darstellung.
They are shown in
Fig. 1
a control switch according to the invention in plan view and installed state,
Fig. 2
1 in the view of the front,
Fig. 3
the switch according to Figures 1 and 2, but in a view of the back,
Fig. 4
2, but with the front housing part removed, and
Fig. 5
a section along the line VV in Fig. 3 in an enlarged view.

In Figur 1 ist der erfindungsgemäße Steuerschalter 1 mit ausgezogenen Linien dargestellt, während der mit dem Steuerschalter 1 zu einer Baueinheit verbundene Leistungsschalter 2, der diesem zugeordnete Drehkopf 3, eine Geräteblende 4 zur Befestigung der Schalter sowie eine dem Steuerschalter 1 zugeordnete Vorrichtung 5 in Form einer optischen Anzeigeeinrichtung strichpunktiert dargestellt sind. Der Leistungsschalter 2 kann beispielsweise ein Temperaturregler gemäß der DE-A-3 238 955 oder ein Leistungssteuergerät gemäß der DE-A-2 625 716 sein, auf die hier Bezug genommen wird zum Zwecke der detaillierten Beschreibung.In Figure 1, the control switch 1 according to the invention is shown with solid lines, while the circuit breaker 2 connected to the control switch 1 to form a structural unit, the rotary head 3 assigned to it, a device cover 4 for fastening the switches and a device 5 assigned to the control switch 1 in the form of a optical display device are shown in dash-dotted lines. The circuit breaker 2 can be, for example, a temperature controller according to DE-A-3 238 955 or a power control device according to DE-A-2 625 716, to which reference is made here for the purpose of the detailed description.

Der Steuerschalter 1 weist ein zweiteiliges, nahezu plattenförmig flach sowie quadratisch begrenztes Gehäuse 6 auf, dessen beide Gehäuseteile 7,8 mit rechtwinklig zur Schaltachse 9 liegenden Seiten zusammengesetzt sind und zwischen diesen Seiten einen flachen Hohlraum für die Aufnahme einer Kontaktscheibe 10 und einer zu dieser unmittelbar benachbarten Kontaktplatine 11 bilden, welche in Figur 4 der Übersichtlichkeit halber nur strichpunktiert angedeutet ist. Der dickere, in der Baueinheit unmittelbar am Leistungsschalter 2 anliegende Gehäuseteil 7 ist an seiner dem anderen Gehäuseteil 8 zugekehrten Seite mit Vertiefungen versehen, während der Gehäuseteil 8 eine im wesentlichen durchgehend ebene Innenseite aufweist und über den größten Teil seiner Erstreckung plattenförmig mit konstanter Dicke ausgebildet ist.The control switch 1 has a two-part, almost plate-shaped flat and square-limited housing 6, the two housing parts 7, 8 of which are assembled with sides perpendicular to the switching axis 9 and between these sides a flat cavity for receiving a contact disk 10 and one directly to it form adjacent contact board 11, which is only indicated by dash-dotted lines in FIG. 4 for the sake of clarity. The thicker, in the structural unit lying directly on the circuit breaker 2, the housing part 7 is provided on its side facing the other housing part 8 with depressions, while the housing part 8 has a substantially continuously flat inside and is plate-shaped with a constant thickness over most of its extent .

Die kreisscheibenförmige und auf einer bis zu ihrem Außenumfang reichenden Ringzone konstante Dicke aufweisende Kontaktscheibe 10 weist an einer Stirnseite eine in der Schaltachse 9 liegende, zylindrisch hülsenförmige Lagermuffe 12 auf, deren Innendurchmesser dem Außendurchmesser einer Schalterwelle 13 zur Betätigung des Leistungsschalters 2 mit Hilfe des Drehknopfes 3 entspricht und deren Außendurchmesser demgegenüber nur geringfügig größer ist. Diese Lagermuffe 12 durchsetzt den Gehäuseteil 8 im Bereich einer Lageröffnung 14, welche gegenüber der sonstigen Dicke des Gehäuseteiles 8 geringfügig länger dadurch ist, daß der Gehäuseteil 8 im Bereich der Lageröffnung 14 mit einer streifenförmig verdickten Zone 15 an der Außenseite versehen ist. Die Lagermuffe 12 durchsetzt außerdem die Kontaktplatine 11, die zu diesem Zweck eine entsprechende Durchgangsbohrung aufweist. Die Kontaktplatine 11 liegt also im wesentlichen ganzflächig an der Innenseite des plattenförmigen Gehäuseteiles 8 an, während sie sich nach der anderen Seite an einer Ringschulter 16 der Kontaktscheibe 10 abstützt, welche im Übergangsbereich zwischen der Lagermuffe 12 und der ringscheibenförmigen Zone der Kontaktscheibe 10 vorgesehen ist und gegenüber der zugehörigen Stirnfläche 17 der ringscheibenförmigen Zone der Kontaktscheibe 10 nur um Bruchteile eines Millimeters vorsteht. Dadurch berührt der eigentliche Grundkörper der Kontaktscheibe 10 die Kontaktplatine 11 mit geringer Reibung im, wesentlichen nur im Bereich der Ringschulter 16, während die übrige Stirnfläche 17 mit geringem Spaltabstand von der zugehörigen Fläche 18 der Kontaktplatine 11 liegt.The circular disk-shaped contact disk 10, which has a constant thickness up to its outer circumference, has on one end face a cylindrical sleeve-shaped bearing sleeve 12 lying in the switching axis 9, the inside diameter of which corresponds to the outside diameter of a switch shaft 13 for actuating the circuit breaker 2 by means of the rotary knob 3 corresponds and whose outer diameter is only slightly larger. This bearing sleeve 12 passes through the housing part 8 in the region of a bearing opening 14, which is slightly longer compared to the other thickness of the housing part 8 in that the housing part 8 is provided in the region of the bearing opening 14 with a strip-shaped zone 15 on the outside. The bearing sleeve 12 also passes through the contact plate 11, which has a corresponding through hole for this purpose. The contact board 11 is thus essentially over the entire surface on the inside of the plate-shaped housing part 8, while they are after the other Is supported on an annular shoulder 16 of the contact disk 10, which is provided in the transition region between the bearing sleeve 12 and the annular disk-shaped zone of the contact disk 10 and protrudes from the associated end face 17 of the annular disk-shaped zone of the contact disk 10 by only a fraction of a millimeter. As a result, the actual base body of the contact disk 10 touches the contact plate 11 with little friction, essentially only in the area of the annular shoulder 16, while the remaining end face 17 lies at a small gap distance from the associated surface 18 of the contact plate 11.

Die andere Stirnfläche 19 des ringscheibenförmigen Teiles der Kontaktplatine 11 liegt im wesentlichen ganzflächig an einer vertieften Bodenfläche des Gehäuseteiles 7 an, wobei diese Bodenfläche somit eine Axiallagerfläche 20 für die Kontaktscheibe 10 bildet.The other end face 19 of the annular disk-shaped part of the contact plate 11 lies essentially over the entire surface of a recessed bottom surface of the housing part 7, this bottom surface thus forming an axial bearing surface 20 for the contact disk 10.

An der von der Lagermuffe 12 abgekehrten Stirnseite weist die Kontaktplatine 10 des weiteren einen gegenüber der Lagermuffe 12 im Durchmesser größeren, zylindrisch flachen Lageransatz 21 auf, der in einer sowohl hinsichtlich des Außendurchmessers als auch hinsichtlich der Axialerstreckung an ihn angepassten Lageröffnung 22 des Gehäuseteiles 7 geführt ist, welche eine vertiefte Zone der Axiallagerfläche 20 bildet.On the front side facing away from the bearing sleeve 12, the contact plate 10 furthermore has a cylindrical flat bearing shoulder 21 which is larger in diameter than the bearing sleeve 12 and which is guided in a bearing opening 22 of the housing part 7 which is adapted to it both in terms of the outer diameter and in terms of the axial extent which forms a recessed zone of the thrust bearing surface 20.

Der Gehäuseteil 7 weist an seiner dem Gehäuseteil 7 zugekehrten Seite einen über alle Gehäuseteilecken durchgehenden Randsteg 23 auf, dessen Kopfkante 2`4 die einzige Anlagefläche des Gehäuseteiles 7 für den Gehäuseteil 8 bildet. Die Kontaktplatine 11 ist an die Innenkontur des Randsteges 22 derart angepasst, daß sie nur mit äußerst geringem Spielabstand dieser Innenflächen mit ihren Außenkanten gegenüberliegt, wobei sie mit ihrer dem Gehäuseteil 7 zugekehrten Seite nur im Bereich der Gehäuseecken an entsprechenden Schulterflächen 25,26 des Gehäuseteiles 7 anliegt. An zwei einander diagonal gegenüberliegenden Ecken reichen diese Schulterflächen 25 bis an die Axiallagerfläche 20, derart, daß die der Schaltachse 9 zugekehrten Kantenflächen der diese Schulterflächen 25 bildenden Vorsprünge kreisbogenförmige Führungsflächen 27 für den Umfang 28 der Kontaktscheibe 10 bilden. Die Schulterflächen 26 an den beiden anderen, einander diametral gegenüberliegenden Gehäuseecken sind durch kleine Eckvorsprünge in diesen Eckzonen gebildet. Im Bereich der Schulterflächen 25 werden beide Gehäuseteile 7,8 jeweils von einer zur Teilungsebene des Gehäuses rechtwinkligen Durchgangsbohrung durchsetzt, wobei die Durchgangsbohrungen beider Gehäuseteile 7,8 bei zusammengesetztem Gehäuse jeweils miteinander fluchten, die Durchgangsbohrungen des Gehäuseteiles 7 größer als die des Gehäuseteiles 8 sind, während die Durchgangsbohrungen des Gehäuseteiles 8 durch hülsenförmige Zentrierstecker 29 begrenzt sind, welche über die Innenseite des Gehäuseteiles 8 vorstehen und im wesentlichen spielfrei in die Durchgangsbohrungen des Gehäuseteiles 7 passen. Im Bereich der Durchgangsbohrungen sind die Ecken der Kontaktplatine 11 ausgespart.On its side facing the housing part 7, the housing part 7 has an edge web 23 which extends over all corners of the housing part and whose top edge 2 ′ 4 forms the only contact surface of the housing part 7 for the housing part 8. The contact board 11 is adapted to the inner contour of the edge web 22 in such a way that it lies only with an extremely small clearance between these inner surfaces with their outer edges, with their housing part 7 facing side rests only in the area of the housing corners on corresponding shoulder surfaces 25, 26 of the housing part 7. At two diagonally opposite corners, these shoulder surfaces 25 extend to the axial bearing surface 20, such that the edge surfaces of the projections forming these shoulder surfaces 25 facing the switching axis 9 form arcuate guide surfaces 27 for the circumference 28 of the contact disk 10. The shoulder surfaces 26 on the two other, diametrically opposite housing corners are formed by small corner projections in these corner zones. In the area of the shoulder surfaces 25, both housing parts 7, 8 are penetrated by a through hole that is perpendicular to the parting plane of the housing, the through holes of both housing parts 7, 8 being aligned with one another when the housing is assembled, the through holes of housing part 7 being larger than those of housing part 8, while the through bores of the housing part 8 are delimited by sleeve-shaped centering plugs 29 which protrude beyond the inside of the housing part 8 and fit into the through bores of the housing part 7 essentially without play. In the area of the through holes, the corners of the contact board 11 are left free.

Die Kontaktplatine 11 weist symmetrisch zu einer Außenkante einen zungenartig rechteckigen, in ihrer Ebene liegenden und einteilig mit ihr ausgebildeten Fortsatz auf, welcher eine aus dem Gehäuse 6 ragende Steckerfahne 30 bildet. Diese Steckerfahne 30 ist durch eine Unterbrechung 31 des Randsteges 23 aus dem Gehäuse geführt, wobei die Bodenfläche dieser Unterbrechung 31 in der Ebene der Schulterflächen 25,26 liegt.The contact board 11 has, symmetrically to an outer edge, a tongue-like rectangular extension lying in its plane and formed in one piece with it, which forms a connector tab 30 protruding from the housing 6. This plug lug 30 is led out of the housing through an interruption 31 of the edge web 23, the bottom surface of this interruption 31 lying in the plane of the shoulder surfaces 25, 26.

An der der Kontaktscheibe 10 zugekehrten Seite ist die Kontaktplatine 11 mit Schalt-Kontakten 32 versehen, die konzentrisch teilkreisförmig um die Schaltachse 9 nach Art von gedruckten Schaltungen auf der Kontaktplatine 11 angebracht sind und deren eine, frei endende Kreisbogen-Enden 33 um Bogenwinkel abgestuft gegeneinander versetzt sind. Die anderen Enden sind elektrisch leitend jeweils mit einem Stecker-Kontakt 34 verbunden, wobei alle Stecker-Kontakte 34 nebeneinander an der Steckerfahne 30 vorgesehen sind. An der zugehörigen Seite der Kontaktscheibe 10 ist ein an der gegenüberliegenden Seite der Kontaktplatine 11 schleifender, radial streifenförmiger Schalt-Kontakt 35 so angeordnet, daß er das Radialfeld, auf welchem die Schalt-Kontakte 32 vorgesehen sind, vollständig übergreift. Beim Drehen der Kontaktscheibe 10 aus der Stellung gemäß Figur 4 gelangen die Schalt-Kontakte 32 nach und nach in Kontaktberührung mit dem Schalt-Kontakt 35, wodurch aufeinanderfolgend die den Stecker-Kontakten 34 zugehörigen Stromkreise geschlossen werden. Die Stecker-Kontakte 34 sind an der Steckerfahne 30 in gleicher Anordnung und Größe vorgesehen, wie an einer Steckerfahne der optischen Anzeigeeinrichtung 5, so daß mit einem Kabelstrang, der an beiden Enden gleiche Stecker aufweist, der durch den Steuerschalter 1 gebildete Anzeigeschalter mit der Anzeigeeinrichtung 5 elektrisch leitend verbunden werden kann. Im dargestellten Ausführungsbeispiel weist die Anzeigeeinrichtung 5 eine Reihe von mehreren, im dargestellten Ausführungsbeispiel zwölf Leuchtdioden 36 auf, die im Bereich eines neben dem Drehknopf 3 liegenden Fensters 37 der Blende 4 gut sichtbar vorgesehen sind.On the side facing the contact disk 10, the contact board 11 is provided with switching contacts 32, which are mounted concentrically in the form of a circle around the switching axis 9 in the manner of printed circuits on the contact board 11 and the one, freely ending circular arc ends 33 of which are graduated with respect to one another by arc angles are offset. The other ends are each electrically conductively connected to a plug contact 34, with all plug contacts 34 being provided next to one another on the plug tab 30. On the associated side of the contact disk 10, a radially strip-shaped switching contact 35, which grinds on the opposite side of the contact board 11, is arranged such that it completely engages over the radial field on which the switching contacts 32 are provided. When the contact disk 10 is rotated from the position shown in FIG. 4, the switching contacts 32 gradually come into contact with the switching contact 35, as a result of which the circuits associated with the plug contacts 34 are closed in succession. The plug contacts 34 are provided on the connector lug 30 in the same arrangement and size as on a connector lug of the optical display device 5, so that with a cable harness that has the same plug at both ends, the display switch formed by the control switch 1 with the display device 5 can be electrically connected. In the exemplary embodiment shown, the display device 5 has a number of several, in the exemplary embodiment shown twelve light-emitting diodes 36 which are provided in a clearly visible manner in the region of a window 37 of the diaphragm 4 located next to the rotary knob 3.

Die Kontaktscheibe 10 weist zur drehschlüssigen Verbindung mit der am Umfang einseitig abgeflachten Schalterwelle 13 eine Kupplung 38 auf, welche in der Axialbohrung 39 der Kontaktscheibe 10 vorgesehen ist. Die Kupplung 38 ist im wesentlichen durch ein ringscheibenförmiges Kupplungsglied 40 gebildet, das am Außenumfang nach Art einer Gewindemutter sechseckig begrenzt und in eine an diese Außenform angepaßte Vertiefung in der Stirnfläche des Lageransatzes 21 eingesetzt ist, derart, daß das Kupplungsglied 40 axial gesichert zwischen der Bodenfläche der Vertiefung 41 und der Bodenfläche der Lageröffnung 22 gehalten ist. Die Durchgangsöffnung des Kupplungsgliedes 38 weist eine an den abgeflachten Querschnitt der Lagerwelle 13 angepaßten Querschnitt auf und bildet einen Abschnitt einer im Durchmesser an die Schalterwelle 13 angepaßten Durchgangsöffnung 42, welche in der Schaltachse 9 den gesamten Steuerschalter 1 durchsetzt. Wird der Steuerschalter 1 an den Leistungsschalter 2 angebaut, so durchsetzt dessen Schalterwelle 13 den Steuerschalter 1, der somit synchron mit dem Leistungsschalter 2 betätigt wird.For the rotational connection with the switch shaft 13 flattened on one side on the circumference, the contact disk 10 has a coupling 38 which is provided in the axial bore 39 of the contact disk 10. The clutch 38 is essentially formed by an annular disk-shaped coupling member 40, which is hexagonally delimited on the outer circumference in the manner of a threaded nut and is inserted into a recess in the end face of the bearing projection 21 adapted to this outer shape, such that the coupling member 40 is axially secured between the bottom surface of the recess 41 and the bottom surface of the bearing opening 22 is held. The through opening of the coupling member 38 has a cross section adapted to the flattened cross section of the bearing shaft 13 and forms a section of a through opening 42 with a diameter adapted to the switch shaft 13, which passes through the entire control switch 1 in the switching axis 9. If the control switch 1 is attached to the circuit breaker 2, its switch shaft 13 passes through the control switch 1, which is thus actuated synchronously with the circuit breaker 2.

Der Steuerschalter 1 weist an der Außenseite des dem Leistungsschalter 2 zugehörigen Gehäuseteiles 7 einen im wesentlichen durch einen Flachbügel 44 gebildeten Träger 43 aus Blech auf, der in Ansicht auf die zugehörige Gehäuseseite im wesentlichen rechtwinklig Z-förmig ausgebildet ist, wobei der Mittelsteg parallel zur Zone 15 liegt und etwa gleiche Breite wie diese hat. Sowohl der Mittelsteg wie die Endstege des Flachbügels 44 sind um dessen Dicke versenkt in der zugehörigen Gehäuseseite angeordnet, derart, daß sie über das Gehäuse nicht vorstehen. Die Enden der Flachbügel-Endstege, die in Form von annähernd quadratischen Schraubplatten 45 im Bereich der die Zentrierstecker 29 aufweisenden Ecken des Gehäuses liegen sind gegenüber dem übrigen Flachbügel 44 zum anderen Gehäuseteil 8 um ein Mehrfaches ihrer Dicke durch entsprechende Abköpfungen versetzt und greifen in entsprechend nochmals versenkte Zonen an der Außenseite des Gehäuseteiles 7 ein. Diese Schraubplatten 45 weisen Gewindeöffnungen für den Eingriff von Gehäusebolzen 46 auf, welche die Zentrierstecker 29 durchsetzen und mit ihren Köpfen an der Außenseite des Gehäuseteiles 8 liegen, derart, daß mit den beiden diagonal liegenden Gehäusebolzen 46 die Gehäuseteile 7,8 gegeneinander verspannt sind. Vor dem Befestigen der Gehäuseteile 7,8 an dem Träger 43, welcher ebenfalls eine in der Schaltachse 9 liegende Fortsetzung der Durchgangsöffnung 42 aufweist, wird der Träger 43 beiderseits der Schaltachse 9 bzw. im Obergangsbereich zu den Endstegen des Flachbügels 44 mit Montierbolzen 47 in Form von metrischen Schrauben an der zugehörigen Seite des Leistungsschalters 2 befestigt. Die, entsprechende Durchgangsöffnungen des Trägers 43 durchsetzenden Montierbolzen 47 liegen mit ihren Köpfen 48 dann an der vom Leistungsschalter 2 abgekehrten Seite des Trägers 43 an. Für die Aufnahme dieser Köpfe 48 sind in der zugehörigen Seite des Gehäuses 6 des Steuerschalters 1, im dargestellten Ausführungsbeispiel also in der Bodenfläche der den Flachbügel 44 versenkt aufnehmenden Vertiefung entsprechende zylindrische Sackloch-Vertiefungen 49 vorgesehen. Nach dem Befestigen des Trägers 43 am Leistungsschalter 2 wird der zusammengesetzte bzw. zusammengesteckte Steuerschalter 1 mit den Gehäusebolzen 46 am Träger 43 befestigt, wodurch gleichzeitig der zusammengebaute Zustand des Steuerschalters 1 gesichert wird.The control switch 1 has on the outside of the housing part 7 associated with the circuit breaker 2 a support 43 made of sheet metal which is essentially formed by a flat bracket 44 and which, in view of the associated housing side, is of essentially rectangular Z-shape, the central web parallel to the zone 15 lies and has about the same width as this. Both the central web and the end webs of the flat bracket 44 are arranged sunk by its thickness in the associated housing side in such a way that they do not protrude beyond the housing. The ends of the flat bracket end webs, which are in the form of approximately square screw plates 45 in the region of the corners of the housing having the centering plug 29, are opposite the other flat bracket 44 to the other housing part 8 by Multiple times their thickness offset by appropriate skirts and engage in correspondingly again countersunk zones on the outside of the housing part 7. These screw plates 45 have threaded openings for the engagement of housing bolts 46, which pass through the centering plug 29 and lie with their heads on the outside of the housing part 8, such that the housing parts 7, 8 are braced against one another with the two diagonally lying housing bolts 46. Before the housing parts 7, 8 are fastened to the carrier 43, which likewise has a continuation of the through opening 42 located in the switching axis 9, the carrier 43 becomes in shape on both sides of the switching axis 9 or in the transition area to the end webs of the flat bracket 44 with mounting bolts 47 fixed by metric screws on the associated side of the circuit breaker 2. The heads 48 of the mounting bolts 47 passing through corresponding through openings of the carrier 43 then rest on the side of the carrier 43 remote from the circuit breaker 2. Corresponding cylindrical blind-hole depressions 49 are provided in the associated side of the housing 6 of the control switch 1 for receiving these heads 48, that is to say in the exemplary embodiment shown in the bottom surface of the recess which receives the flat bracket 44. After the carrier 43 has been fastened to the circuit breaker 2, the assembled or plugged-together control switch 1 is fastened to the carrier 43 with the housing bolts 46, thereby simultaneously securing the assembled state of the control switch 1.

An der streifenförmigen Zone 15 weist das Gehäuse 6 des Steuerschalters 1 zwei beiderseits der Schaltachse 9 liegende Augen 50 mit Gewindebohrungen 51 auf, wobei die beiden anderen zylindrischen Augen 50 am weitesten über die zugehörige Seite des Steuerschalters 1 vorstehen und zur Befestigung der aus Steuerschalter 1 und Leistungsschalter 2 bestehenden Baueinheit an der Innenseite der Blende 4 dienen.On the strip-shaped zone 15, the housing 6 of the control switch 1 has two eyes 50 on both sides of the switching axis 9 with threaded bores 51, wherein the two other cylindrical eyes 50 protrude furthest from the associated side of the control switch 1 and serve to fasten the structural unit consisting of the control switch 1 and the circuit breaker 2 to the inside of the panel 4.

Claims (10)

  1. Control switch for electrothermal equipment having a switching device (2) operable by means of a control shaft (13), the control switch (1) to be connected to the switching device (2) to form a subassembly having a plurality of mechanical switching contacts (32, 35) to be opened and closed in rotation angle-dependent manner for controlling an associated apparatus (36) as a function of the rotation positions of the control shaft (13) and in which a contact disk (10) carrying the rotary switching contacts (35) is driven by the control shaft (13), characterized in that the control switch (1) is subsequently fittable as a separate component having a case (6) to the switching device (2) and the contact disk (10) can be connected to the control switch by means of a mounting coupling (38), the latter having a separate coupling ring (40) connected in rotation-fixed manner to the contact disk (10) and with a through-hole (42) adapted to the control shaft profile, that the non-rotary switching contacts (32) are located on a separate contact board (11), which is guided and mounted in the casing (6) and that the contact disk (10) is supported by means of a ring shoulder (16) on the contact board (11).
  2. Control switch according to claim 1, characterized in that the control switch (1), in particular as a disk-like, flat subassembly is engaged on the outside of the switching device (2) and is connected with its control shaft (13) in the manner of a plug connection.
  3. Control switch according to claims 1 or 2, characterized in that it has on one side fastening members for fastening between the switching device (2) and a shield (4), preferably studs (50) projecting over the casing (6) and having tapholes (51) for fastening to the shield (4) and forms a support bracket for the switching device (2).
  4. Control switch according to one of the preceding claims, characterized by a support (43) of the control switch (1) prefittable to the power control device (2) and having connecting members for the control switch (1), the support (43) in particular formed by the flat clip (44) preferably has engagement openings for casing bolts (46), such as screws, which hold together the casing parts (7, 8) of the control switch (1) and in which in particular heads (48) of mounting bolts (47) of the support (43) associated with the power control device (2) are located in depressions (49) of the casing (6) of the control switch (1).
  5. Control switch according to one of the preceding claims, characterized in that the switching contacts (32, 35) are formed by reciprocally angularly displaced sliding contacts, which are in particular located in a plane at right angles to the switching axis (9) and preferably the switching contacts (32) of the contact board (11) are coaxially arranged in arcuate manner about the switching axis (9) and their arc ends (43) are reciprocally displaced in stepped manner by arc angles.
  6. Control switch according to one of the preceding claims, characterized in that the control disk (10) traverses the contact board (11) with a bearing sleeve (12) and that the casing (6) has a marginal web (23) closely surrounding the contact board (11) for orientation purposes.
  7. Control switch according to one of the preceding claims, characterized in that the coupling ring (40) for the control shaft (13) engages in a non-circular depression (41) on one end of the contact disk (10).
  8. Control switch according to one of the preceding claims, characterized in that the contact board (11) has a plug lug (30) guided out of the casing (6) with separate plug contacts (34) for each of the switching contact, (32) provided on the board (11) and preferably the contact board (11) is guided with a projection forming the plug lug (30) and located in its plane through a break (31) of the marginal web (23) out of the casing (6).
  9. Control switch according to one of the preceding claims, characterized in that the switching contacts (32) and/or the plug contacts (34) are constructed in the manner of printed circuits and are preferably located on the contact board (11).
  10. Control switch according to one of the preceding claims, characterized in that it is constructed for placing on in particular continuously operable control means (2), energy regulators or the like of electrothermal equipment and is preferably constructed for controlling display means for the setting of the associated control device (2).
EP85111790A 1984-09-28 1985-09-18 Control switch Expired - Lifetime EP0177811B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85111790T ATE63401T1 (en) 1984-09-28 1985-09-18 CONTROL SWITCH.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843435609 DE3435609A1 (en) 1984-09-28 1984-09-28 POWER DISPLAY SWITCH
DE3435609 1984-09-28

Publications (2)

Publication Number Publication Date
EP0177811A1 EP0177811A1 (en) 1986-04-16
EP0177811B1 true EP0177811B1 (en) 1991-05-08

Family

ID=6246585

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85111790A Expired - Lifetime EP0177811B1 (en) 1984-09-28 1985-09-18 Control switch

Country Status (4)

Country Link
EP (1) EP0177811B1 (en)
AT (1) ATE63401T1 (en)
DE (2) DE3435609A1 (en)
YU (1) YU46514B (en)

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DE19507627A1 (en) * 1995-03-04 1996-09-05 Ego Elektro Blanc & Fischer Relays for power consumers or the like

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Also Published As

Publication number Publication date
YU153385A (en) 1988-02-29
YU46514B (en) 1993-11-16
EP0177811A1 (en) 1986-04-16
DE3582774D1 (en) 1991-06-13
ATE63401T1 (en) 1991-05-15
DE3435609A1 (en) 1986-04-10

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