EP0913846B1 - Selector switch with thermostat for baking oven - Google Patents
Selector switch with thermostat for baking oven Download PDFInfo
- Publication number
- EP0913846B1 EP0913846B1 EP98112074A EP98112074A EP0913846B1 EP 0913846 B1 EP0913846 B1 EP 0913846B1 EP 98112074 A EP98112074 A EP 98112074A EP 98112074 A EP98112074 A EP 98112074A EP 0913846 B1 EP0913846 B1 EP 0913846B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- camshaft
- thermostat
- coupling member
- switch according
- disc
- 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
Links
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
- H01H3/00—Mechanisms for operating contacts
- H01H3/54—Mechanisms for coupling or uncoupling operating parts, driving mechanisms, or contacts
- H01H3/58—Mechanisms for coupling or uncoupling operating parts, driving mechanisms, or contacts using friction, toothed, or other mechanical clutch
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/12—Means for adjustment of "on" or "off" operating temperature
Definitions
- the type of heating e.g. Top heat, bottom heat, grill, thawing or pyrolytic cleaning and on the other hand the temperature can be switched.
- a temperature selector switch is arranged separately from the oven selector switch, so that the temperature can be set in each case with different types of heating.
- the invention relates to an oven selector switch of the latter type. In ovens equipped with such a switch, for example, a first cam switch switches on the oven lighting and a subsequent cam switch position is intended for thawing with low heat generation. Switching on causes the thermostat to be set, which switches off the heating when the set temperature is reached.
- the thermostatic control shaft is taken along by the camshaft.
- the maximum temperature is usually reached in the 270 ° position.
- cam contact circuits are again to be carried out, the thermostat control shaft remaining in the maximum position.
- different grill levels can be switched on.
- Document EP 0 039 006 discloses an oven selector switch according to the preamble of claim 1.
- the invention has for its object to provide a simple, smooth-running oven selector switch with a thermostat.
- the invention ensures that only a single additional part is required, which sits on the control shaft of the thermostat.
- This drive plate with its radially or axially deflectable spring tongue can consist of elastic plastic and is inexpensive to manufacture.
- the camshaft can be shifted on smoothly because every connection to the control shaft of the thermostat is interrupted.
- the clutch arrangement according to the invention can be designed differently, it being necessary for the clutch to be disengaged at a certain angle of rotation and to be engaged again when turning back at the same angle.
- the Coupling can be provided and designed with radially or axially disengageable spring members, as is explained in detail in the subclaims.
- the oven selector switch according to FIGS. 1 to 3 or 4 to 7 has a cam switch 10, the base 12 of which carries the switching contacts which are actuated by the switching cams 14 of the camshaft 16.
- Receptacle pins 18 are molded onto the base 12, and a thermostat 20 with holes in its receiving flanges 22 is snapped onto them.
- the thermostat 20 has an actuating shaft 24, which is coaxial to the camshaft 16 and can be coupled to it via an overrunning clutch, which via a first actuating movement of the camshaft of 270 ° Takes control shaft 24 of the thermostat and causes a disengagement over a further range of rotation of the camshaft from 270 ° to 330 °, so that the control shaft 24 of the thermostat stops during this further range of rotation.
- a coupling is effected in the 270 ° position, so that the two shafts 16 and 24 move together again over the swivel range between 270 ° and 0 °.
- a driving disk 26 is provided, which is connected to the thermostatic adjusting shaft 24 in a rotationally fixed manner.
- the driving disk 26 has a spring tongue 28 which is designed in an arc shape and protrudes from the driving disk 26 in the circumferential direction.
- This tongue is designed to be radially resilient and has a coupling hook 30 which is still inward and a run-up slope 32 which runs into a tip 34.
- the coupling hook 30 interacts with an extension 36 which is connected in a rotationally fixed manner to the camshaft and which, in the coupled position according to FIG. 2, takes the driving disk 26 and the thermostatic adjusting shaft 24 clockwise according to FIG. 2 via the spring tongue 28.
- Fig. 2 is the zero position of the oven switch.
- the drive plate 26 When the camshaft 16 rotates, the drive plate 26 is rotated via the extension 36 and the coupling hook 30 until the spring tongue with its run-up slope 32 runs onto a housing-fixed ramp 38 that ends in a tip 39 and that protrudes circumferentially from the base 12 of the cam switch and that Spring tongue 28 lifts radially outwards.
- the extension 36 can continue to run without entraining the spring tongue until the end stop is reached.
- the extension 36 cooperates with a stop surface 40 of the drive plate 26 and thus rotates the thermostatic adjusting shaft 24 back, the spring tongue engaging in the position shown in FIG. 2.
- the spring tongue 42 forming the coupling member becomes in the axial direction excavated by a ramp fixed to the housing and thereby uncoupled from the camshaft 16.
- This spring tongue 42 which is provided with a run-up slope, is designed as an arc-shaped extension of the driving disk 26 and runs onto the ramp 44 fixed to the housing with a radially projecting section 46, which has an inclined run-up surface.
- An extension 36 of the camshaft 16 protrudes into the path of movement of the drive plate 26 and is coupled to the spring tongue 42 via the hook nose 48.
- Fig. 5 shows the engaged position in the zero position of the camshaft 16. In the 270 ° position shown in FIG. 7, the hook nose 48 of the spring tongue 42 is uncoupled from the extension of the camshaft 16, so that the thermostatic actuating shaft 24 stops and the camshaft itself can continue to rotate for example 60 °.
- the extension 36 When turning back, the extension 36 cooperates with a stop surface 47 of the drive plate 26 and thus rotates the thermostat control shaft 24 back, the spring tongue snapping into the position shown in FIG. 5.
- the drive plate in the 270 ° position has a slight detent, which is caused by an increase 51 on the base 12 and an associated elevation 52 is formed on the drive plate 26.
- the drive plate with the radially or axially disengageable coupling tongues is seated on the thermostat control shaft. This ensures that a defined angular stop is achieved when the spring tongue hits the ramp fixed to the housing.
- the extension 36 of the Camshaft 16 is carried by a disk 50 seated on the camshaft, which contacts the driving disk 26 of the thermostatic actuating shaft 24 or runs thereon in the lost motion position.
Landscapes
- Thermally Actuated Switches (AREA)
- Control Of Temperature (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
Description
Bei einem Backofen muß einerseits die Heizungsart, z.B. Oberhitze, Unterhitze, Grill, Auftauen oder pyrolytische Reinigung und andererseits die Temperatur schaltbar sein. Zu diesem Zweck wird entweder ein Temperatur-Wahlschalter getrennt vom Backofen-Wahlschalter angeordnet, so daß bei verschiedener Heizungsart die Temperatur jeweils eingestellt werden kann. Stattdessen ist es auch üblich, den auf einen Thermostaten einwirkenden Temperaturwähler mit dem Backofen-Wahlschalter zu vereinigen. Die Erfindung bezieht sich auf einen Backofen-Wahlschalter der zuletzt genannten Gattung. Bei Backöfen, die mit einem solchen Schalter ausgerüstet sind, bewirkt beispielsweise eine erste Nockenschaltung ein Einschalten der Backofenbeleuchtung und eine folgende Nockenschaltstellung ist zum Auftauen mit geringer Wärmeentwicklung bestimmt. Die Weiterschaltung bewirkt eine Einstellung des Thermostaten, der bei Erreichen der jeweils eingestellten Temperatur die Heizung abschaltet. Zu diesem Zweck wird von der Nockenwelle die Thermostat-Stellwelle mitgenommen. Die maximale Temperatur wird gewöhnlich in der 270°-Stellung erreicht. In einem weiteren Bereich zwischen 270° und beispielsweise 330° sollen wiederum Nockenkontaktschaltungen vorgenommen werden, wobei die Thermostat-Stellwelle in der maximalen Stellung verbleibt. In diesem 60°-Bereich können beispielsweise verschiedene Grillstufen zugeschaltet werden.In the case of an oven, the type of heating, e.g. Top heat, bottom heat, grill, thawing or pyrolytic cleaning and on the other hand the temperature can be switched. For this purpose, either a temperature selector switch is arranged separately from the oven selector switch, so that the temperature can be set in each case with different types of heating. Instead, it is also common to combine the temperature selector acting on a thermostat with the oven selector switch. The invention relates to an oven selector switch of the latter type. In ovens equipped with such a switch, for example, a first cam switch switches on the oven lighting and a subsequent cam switch position is intended for thawing with low heat generation. Switching on causes the thermostat to be set, which switches off the heating when the set temperature is reached. For this purpose, the thermostatic control shaft is taken along by the camshaft. The maximum temperature is usually reached in the 270 ° position. In a further range between 270 ° and, for example, 330 °, cam contact circuits are again to be carried out, the thermostat control shaft remaining in the maximum position. In this 60 ° range, for example, different grill levels can be switched on.
Bei derartigen Nockenschaltern besteht das Problem der Entkupplung zwischen Nockenwelle und Thermostat-Stellwelle in einer bestimmten Drehstellung, im allgemeinen in der 270°-Winkelstellung. Es ist bekannt, in die Nockenwelle des Backofen-Wahlschalters eine Schenkelfeder zu montieren, die auf einen Mitnehmer für den Thermostaten einwirkt. Wenn die Thermostat-Stellwelle nach einer Winkeldrehung von 270° an einem Anschlag auflief, wurde die in der Nockenwelle montierte Schenkelfeder beim Weiterdrehen des Backofen-Wahlschalters gespannt. Dies bedingte, daß die Nockenrastung des Backofen-Wahlschalters härter ausgelegt werden mußte als die Vorspannung der Schenkelfeder, damit nicht durch diese Schenkelfeder ein ungewolltes Rückdrehen erfolgte. Dadurch wurde die Rastung des Backofen-Wahlschalters sehr schwergängig.With such cam switches, there is the problem of decoupling between the camshaft and the thermostatic actuating shaft in a certain rotational position, generally in the 270 ° angular position. It is known to mount a leg spring in the camshaft of the oven selector switch acts on a driver for the thermostat. If the thermostatic control shaft ran up to a stop after an angular rotation of 270 °, the leg spring installed in the camshaft was tensioned when the oven selector switch was turned further. This meant that the cam lock of the oven selector switch had to be designed to be harder than the pretension of the leg spring, so that this leg spring did not cause an unwanted turning back. This made locking the oven selector switch very difficult.
Es ist ferner bekannt, auf der Rückseite des Backofen-Wahlschalters eine Blattfeder zu montieren, die gleichzeitig Aufnahmezapfen für den Thermostaten hat. Auf der hinteren Stirnseite der Nockenwelle und an einer Mitnahmescheibe für den Thermostaten sind Rastnocken angebracht, die durch die Blattfeder gegeneinander gepreßt werden.It is also known to mount a leaf spring on the back of the oven selector switch, which at the same time has mounting pins for the thermostat. On the rear end of the camshaft and on a drive plate for the thermostat, locking cams are attached, which are pressed against each other by the leaf spring.
Dokument EP 0 039 006 offenbart einen Backofen - Wahlschalter gemäß dem Oberbegriff des Anspruchs 1.Document EP 0 039 006 discloses an oven selector switch according to the preamble of claim 1.
Der Erfindung liegt die Aufgabe zugrunde, einen einfach aufgebauten, leichtgängigen Backofen-Wahlschalter mit Thermostat zu schaffen.The invention has for its object to provide a simple, smooth-running oven selector switch with a thermostat.
Gelöst wird die gestellte Aufgabe durch die im Kennzeichnungsteil des Patentanspruchs 1 angegebenen Merkmale.The problem is solved by the features specified in the characterizing part of claim 1.
Durch die Erfindung wird erreicht, daß nur noch ein einziges zusätzliches Teil erforderlich ist, welches auf der Stellwelle des Thermostaten sitzt. Diese Mitnehmerscheibe mit ihrer radial oder axial auslenkbaren Federzunge kann aus elastischem Kunststoff bestehen und ist billig herstellbar. Infolge der Entkupplung bei einem vorbestimmten Drehwinkel kann die Nockenwelle leichtgängig weitergeschaltet werden, weil jede Verbindung mit der Stellwelle des Thermostaten unterbrochen ist.The invention ensures that only a single additional part is required, which sits on the control shaft of the thermostat. This drive plate with its radially or axially deflectable spring tongue can consist of elastic plastic and is inexpensive to manufacture. As a result of the uncoupling at a predetermined angle of rotation, the camshaft can be shifted on smoothly because every connection to the control shaft of the thermostat is interrupted.
Die erfindungsgemäße Kupplungsanordnung kann unterschiedlich ausgebildet sein, wobei es erforderlich ist, daß die Kupplung bei einem bestimmten Drehwinkel ausgerückt und bei demselben Winkel beim Rückdrehen wieder eingerückt wird. Die Kupplung kann mit radial oder axial ausrückbaren Federgliedern versehen und ausgebildet sein, wie dies in den Unteransprüchen im einzelnen erläutert ist.The clutch arrangement according to the invention can be designed differently, it being necessary for the clutch to be disengaged at a certain angle of rotation and to be engaged again when turning back at the same angle. The Coupling can be provided and designed with radially or axially disengageable spring members, as is explained in detail in the subclaims.
Nachstehend werden zwei Ausführungsbeispiele der Erfindung anhand der Zeichnung beschrieben. In der Zeichnung zeigen:
- Fig. 1 eine Ansicht eines Backofen-Wahlschalters mit Thermostat;
- Fig. 2 in größerem Maßstab einen Schnitt nach der Linie II-II im eingekuppelten Zustand;
- Fig. 3 einen der Fig. 2 entsprechenden Schnitt im auskuppelten Zustand;
- Fig. 4 eine Ansicht einer zweiten Ausführungsform eines Backofen-Wahlschalters mit Thermostat im eingekuppelten Zustand;
- Fig. 5 einen Schnitt nach der Linie V-V gemäß Fig. 4;
- Fig. 6 eine Ansicht des Backofen-Wahlschalters gemäß Fig. 4 im ausgekuppelten Zustand;
- Fig. 7 einen Schnitt nach der Linie VII-VII gemäß Fig. 6.
- Figure 1 is a view of an oven selector switch with a thermostat.
- Figure 2 on a larger scale a section along the line II-II in the coupled state.
- 3 shows a section corresponding to FIG. 2 in the disengaged state;
- 4 shows a view of a second embodiment of an oven selector switch with a thermostat in the coupled state;
- 5 shows a section along the line VV of FIG. 4.
- FIG. 6 is a view of the oven selector switch according to FIG. 4 in the disengaged state;
- 7 is a section along the line VII-VII of FIG .. 6
Der Backofen-Wahlschalter gemäß Fig. 1 bis 3 bzw. Fig. 4 bis 7 weist einen Nockenschalter 10 auf, dessen Sockel 12 die Schaltkontakte trägt, die durch die Schaltnocken 14 der Nockenwelle 16 betätigt werden. An dem Sockel 12 sind Aufnahmezapfen 18 angeformt, auf die ein Thermostat 20 mit Löchern seiner Aufnahmeflansche 22 aufgerastet ist. Der Thermostat 20 weist eine Stellwelle 24 auf, die koaxial zur Nockenwelle 16 liegt und mit dieser über eine Überholkupplung kuppelbar ist, die über eine erste Stellbewegung der Nockenwelle von 270° die Stellwelle 24 des Thermostates mitnimmt und über einen weiteren Drehbereich der Nockenwelle von 270° bis 330° eine Auskupplung bewirkt, so daß während dieses weiteren Drehbereichs die Stellwelle 24 des Thermostaten stehenbleibt. Bei der Rückdrehung wird in der 270°-Stellung eine Einkupplung bewirkt, so daß sich die beiden Wellen 16 und 24 über den Schwenkbereich zwischen 270° und 0° wieder gemeinsam bewegen.The oven selector switch according to FIGS. 1 to 3 or 4 to 7 has a cam switch 10, the base 12 of which carries the switching contacts which are actuated by the switching cams 14 of the camshaft 16. Receptacle pins 18 are molded onto the base 12, and a thermostat 20 with holes in its receiving flanges 22 is snapped onto them. The thermostat 20 has an actuating shaft 24, which is coaxial to the camshaft 16 and can be coupled to it via an overrunning clutch, which via a first actuating movement of the camshaft of 270 ° Takes control shaft 24 of the thermostat and causes a disengagement over a further range of rotation of the camshaft from 270 ° to 330 °, so that the control shaft 24 of the thermostat stops during this further range of rotation. When turning back, a coupling is effected in the 270 ° position, so that the two shafts 16 and 24 move together again over the swivel range between 270 ° and 0 °.
Bei beiden Ausführungsbeispielen ist eine Mitnehmerscheibe 26 vorgesehen, die drehfest mit der Thermostat-Stellwelle 24 verbunden ist.In both exemplary embodiments, a driving disk 26 is provided, which is connected to the thermostatic adjusting shaft 24 in a rotationally fixed manner.
Gemäß dem Ausführungsbeispiel nach Fig. 1 bis 3 weist die Mitnehmerscheibe 26 eine Federzunge 28 auf, die bogenförmig gestaltet ist und in Umfangsrichtung von der Mitnehmerscheibe 26 vorsteht. Diese Zunge ist radial federnd ausgebildet und weist einen noch nach innen stehenden Kupplungshaken 30 und eine in eine Spitze 34 auslaufende Auflaufschräge 32 auf. Der Kupplungshaken 30 wirkt mit einem mit der Nockenwelle drehfest verbundenen Fortsatz 36 zusammen, der in der eingekuppelten Stellung gemäß Fig. 2 die Mitnehmerscheibe 26 und die Thermostat-Stellwelle 24 über die Federzunge 28 im Uhrzeigersinn gemäß Fig. 2 mitnimmt. Fig. 2 ist die Nullstellung des Backofenschalters. Bei Drehung der Nockenwelle 16 wird über den Fortsatz 36 und den Kupplungshaken 30 die Mitnehmerscheibe 26 mitgedreht, bis die Federzunge mit ihrer Auflaufschräge 32 auf eine gehäusefeste, in eine Spitze 39 auslaufende Rampe 38 aufläuft, die vom Sockel 12 des Nockenschalters in Umfangsrichtung vorsteht und die Federzunge 28 radial nach außen aushebt. Dadurch kann der Fortsatz 36 ohne Mitnahme der Federzunge weiterlaufen, bis der Endanschlag erreicht ist. Beim Zurückdrehen wirkt der Fortsatz 36 mit einer Anschlagfläche 40 der Mitnehmerscheibe 26 zusammen und dreht so die Thermostat-Stellwelle 24 zurück, wobei die Federzunge in die aus Fig. 2 ersichtliche Stellung einrastet.According to the exemplary embodiment according to FIGS. 1 to 3, the driving disk 26 has a spring tongue 28 which is designed in an arc shape and protrudes from the driving disk 26 in the circumferential direction. This tongue is designed to be radially resilient and has a coupling hook 30 which is still inward and a run-up slope 32 which runs into a tip 34. The coupling hook 30 interacts with an extension 36 which is connected in a rotationally fixed manner to the camshaft and which, in the coupled position according to FIG. 2, takes the driving disk 26 and the thermostatic adjusting shaft 24 clockwise according to FIG. 2 via the spring tongue 28. Fig. 2 is the zero position of the oven switch. When the camshaft 16 rotates, the drive plate 26 is rotated via the extension 36 and the coupling hook 30 until the spring tongue with its run-up slope 32 runs onto a housing-fixed ramp 38 that ends in a tip 39 and that protrudes circumferentially from the base 12 of the cam switch and that Spring tongue 28 lifts radially outwards. As a result, the extension 36 can continue to run without entraining the spring tongue until the end stop is reached. When turning back, the extension 36 cooperates with a stop surface 40 of the drive plate 26 and thus rotates the thermostatic adjusting shaft 24 back, the spring tongue engaging in the position shown in FIG. 2.
Bei dem Ausführungsbeispiel nach Fig. 4 bis 7 wird die das Kupplungsglied bildende Federzunge 42 in axialer Richtung durch eine gehäusefeste Auflauframpe ausgehoben und dadurch von der Nockenwelle 16 entkuppelt. Diese mit einer Auflaufschräge versehene Federzunge 42 ist als kreisbogenförmiger Fortsatz der Mitnehmerscheibe 26 ausgebildet und läuft mit einem radial vorstehenden Abschnitt 46, der eine schräge Auflauffläche besitzt, auf die gehäusefeste Rampe 44 auf. Ein Fortsatz 36 der Nockenwelle 16 steht in die Bewegungsbahn der Mitnehmerscheibe 26 ein und ist über die Hakennase 48 mit der Federzunge 42 gekuppelt. Fig. 5 zeigt die eingekuppelte Stellung in der Nullstellung der Nockenwelle 16. In der 270°-Stellung gemäß Fig. 7 ist die Hakennase 48 der Federzunge 42 vom Fortsatz der Nockenwelle 16 entkuppelt, so daß die Thermostat-Stellwelle 24 stehenbleibt und die Nockenwelle sich weiter um beispielsweise 60° drehen kann.4 to 7, the spring tongue 42 forming the coupling member becomes in the axial direction excavated by a ramp fixed to the housing and thereby uncoupled from the camshaft 16. This spring tongue 42, which is provided with a run-up slope, is designed as an arc-shaped extension of the driving disk 26 and runs onto the ramp 44 fixed to the housing with a radially projecting section 46, which has an inclined run-up surface. An extension 36 of the camshaft 16 protrudes into the path of movement of the drive plate 26 and is coupled to the spring tongue 42 via the hook nose 48. Fig. 5 shows the engaged position in the zero position of the camshaft 16. In the 270 ° position shown in FIG. 7, the hook nose 48 of the spring tongue 42 is uncoupled from the extension of the camshaft 16, so that the thermostatic actuating shaft 24 stops and the camshaft itself can continue to rotate for example 60 °.
Beim Zurückdrehen wirkt der Fortsatz 36 mit einer Anschlagfläche 47 der Mitnehmerscheibe 26 zusammen und dreht so die Thermostat-Stellwelle 24 zurück, wobei die Federzunge in die aus Fig. 5 ersichtliche Stellung einrastet.When turning back, the extension 36 cooperates with a stop surface 47 of the drive plate 26 and thus rotates the thermostat control shaft 24 back, the spring tongue snapping into the position shown in FIG. 5.
Um ein unerlaubtes Zurückdrehen der Thermostat-Stellwelle 24 beim Rückdrehen aus der Totgangstellung zu verhindern (wegen Reibung zwischen Mitnehmerscheibe 26 und Fortsatz 36), besitzt die Mitnehmerscheibe in der 270°-Stellung eine leichte Rastung, die durch eine Erhöhung 51 auf dem Sockel 12 und eine dazugehörige Erhöhung 52 auf der Mitnehmerscheibe 26 gebildet wird.In order to prevent unauthorized turning back of the thermostatic control shaft 24 when turning back from the lost motion position (due to friction between drive plate 26 and extension 36), the drive plate in the 270 ° position has a slight detent, which is caused by an increase 51 on the base 12 and an associated elevation 52 is formed on the drive plate 26.
Gemäß den beschriebenen bevorzugten Ausführungsbeispielen sitzt die Mitnehmerscheibe mit den radial oder axial ausrückbaren Kupplungszungen auf der Thermostat-Stellwelle. Hierdurch wird gewährleistet, daß beim Auflaufen der Federzunge auf die gehäusefest Rampe ein definierter Winkelanschlag erzielt wird. Es soll für die Erfindung jedoch auch vorbehalten bleiben, das auf eine gehäusefeste Rampe auflaufende Kupplungsglied auf der Nockenwelle anzuordnen und auf der Thermostat-Stellwelle einen entsprechenden Mitnehmer vorzusehen. Der Fortsatz 36 der Nockenwelle 16 wird von einer auf der Nockenwelle sitzenden Scheibe 50 getragen, die die Mitnehmerscheibe 26 der Thermostat-Stellwelle 24 berührt bzw. auf dieser in Totgangstellung abläuft.According to the preferred exemplary embodiments described, the drive plate with the radially or axially disengageable coupling tongues is seated on the thermostat control shaft. This ensures that a defined angular stop is achieved when the spring tongue hits the ramp fixed to the housing. However, it should also be reserved for the invention to arrange the coupling member running onto a housing-fixed ramp on the camshaft and to provide a corresponding driver on the thermostat control shaft. The extension 36 of the Camshaft 16 is carried by a disk 50 seated on the camshaft, which contacts the driving disk 26 of the thermostatic actuating shaft 24 or runs thereon in the lost motion position.
- 1010
- Nockenschaltercam switches
- 1212
- Sockelbase
- 1414
- Schaltnockenswitching cams
- 1616
- Nockenwellecamshaft
- 1818
- Aufnahmezapfenspigot
- 2020
- Thermostatthermostat
- 2222
- Aufnahmeflanschreceiving flange
- 2424
- Thermostat-StellwelleThermostat setting shaft
- 2626
- Mitnehmerscheibedriver disc
- 2828
- Federzungespring tongue
- 3030
- Kupplungshakencoupling hook
- 3232
- Auflaufschrägeapproach ramp
- 3434
- Spitzetop
- 3636
- Fortsatzextension
- 3838
- gehäusefeste Rampefixed ramp
- 3939
- Spitzetop
- 4040
- Anschlagflächestop surface
- 4242
- Federzungespring tongue
- 4444
- gehäusefeste Rampefixed ramp
- 4646
- radial vorstehender Abschnittradially projecting section
- 4747
- Anschlagflächestop surface
- 4848
- Hakennasehooknose
- 5050
- Scheibedisc
- 5151
- Erhöhungincrease
- 5252
- Erhöhungincrease
Claims (10)
- A baking oven selector switch with thermostat, in which a camshaft switching to the heating mode by way of cam contacts is connected by an overrun coupling to the setting spindle (24) of a thermostat (20) in such a way that after a predetermined angular rotation of the camshaft the thermostat setting shaft (24) is uncoupled and remains stationary while the camshaft (16) continues to rotate, characterised in that the overrun coupling has a first coupling member (36) on the one shaft (16) and a second coupling member (28; 42) on the other shaft (24), which second coupling member is deflectable by way of a ramp (38, 44) fixed with respect to the housing.
- A switch according to claim 1 characterised in that the thermostat setting shaft (24) carries an entrainment disc (26) with a radially resilient tongue (28) which forms the second coupling member and which in one direction of rotation is positively lockingly connected by way of a hook (30) to the first coupling member (36) of the camshaft (16) and in a predetermined angular position can be lifted radially out of the first coupling member (36) by the ramp (38) which is fixed with respect to the housing.
- A switch according to claim 1 characterised in that the thermostat setting shaft (24) carries an entrainment disc (26) with an axially resilient tongue (42) which forms the second coupling member and which in one direction of rotation is positively lockingly connected by way of a hook nose (48) to the first coupling member (36) of the camshaft (16) and in a predetermined angular position can be lifted axially out of the first coupling member (36) by the ramp (44) which is fixed with respect to the housing, by means of a radially projecting portion (46).
- A switch according to claims 1 and 2 characterised in that the entrainment member is in the form of a disc (26) with a sector-shaped cutout in which the arcuately curved spring tongue (28) begins in the tangential direction and that the first coupling member is in the form of an extension (36) of the camshaft (16), against which the coupling hook (30) of the spring tongue (28) bears in radially inwardly resilient relationship.
- A switch according to claims 1 and 3 characterised in that the entrainment member is in the form of a disc (26) with a sector-shaped cutout in which the arcuately curved spring tongue (42) begins in the tangential direction and that the first coupling member is in the form of an extension (36) of the camshaft (16), against which the coupling hook of the spring tongue (42) bears in axially resilient relationship.
- A switch according to claims 1 to 3 characterised in that the ramp (38) which is fixed with respect to the housing co-operates with its leading tip (39) with an inclined run-on surface (32) of the coupling hook (28) in the predetermined angular position and lifts off the spring tongue.
- A switch according to claims 1, 3 and 5 characterised in that the entrainment disc (26) has a radially projecting portion (46) having an inclined run-on surface on to which the ramp (44) which is fixed with respect to the housing runs in the predetermined angular position.
- A switch according to one of claims 1 to 7 characterised in that the entrainment disc (26) and the spring tongue (28; 42) are made in one piece from elastic material.
- A switch according to one of claims 1 to 8 characterised in that the thermostat is flange-mounted to the base (12) of the cam switch (10) by way of latching mounting projections (18).
- A switch according to one of claims 1 to 9 characterised in that the extension (36) of the camshaft (16) is carried by a disc (50) which is mounted on the camshaft and which contacts the entrainment disc (26) of the thermostat setting shaft (24) or runs thereon in the free-travel position, wherein during the reverse rotary movement the extension (36) co-operates with an abutment surface (40) or (47) respectively of the entrainment disc (26) and turns the setting shaft (24) back.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29719489U DE29719489U1 (en) | 1997-11-03 | 1997-11-03 | Oven selector switch with thermostat |
| DE29719489U | 1997-11-03 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0913846A2 EP0913846A2 (en) | 1999-05-06 |
| EP0913846A3 EP0913846A3 (en) | 1999-12-22 |
| EP0913846B1 true EP0913846B1 (en) | 2004-03-31 |
Family
ID=8048092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98112074A Expired - Lifetime EP0913846B1 (en) | 1997-11-03 | 1998-06-30 | Selector switch with thermostat for baking oven |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0913846B1 (en) |
| AT (1) | ATE263426T1 (en) |
| DE (2) | DE29719489U1 (en) |
| ES (1) | ES2217459T3 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010048906B4 (en) | 2010-10-08 | 2012-06-28 | Carsten Dreses | Ergonomic buttplate |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB755733A (en) * | 1953-08-19 | 1956-08-29 | John Davis And Son Derby Ltd | Improvements relating to electrical remote-control switch apparatus |
| GB971510A (en) * | 1962-05-02 | 1964-09-30 | Smith & Sons Ltd S | Improvements in or relating to engageable and disengageable couplings for rotatable transmissions |
| DE2803768C3 (en) * | 1977-01-31 | 1980-08-07 | E.G.O. Regeltechnik G Bh, 7519 Oberderdingen | Electrical cam switch with coupled rotary switch |
| DE3016032A1 (en) * | 1980-04-25 | 1981-10-29 | E.G.O. Regeltechnik GmbH, 6833 Waghäusel | SWITCHING AND CONTROL DEVICE |
| DE3104732A1 (en) * | 1981-02-11 | 1982-09-02 | Brown, Boveri & Cie Ag, 6800 Mannheim | Electrical built-in rotary switch having an electronic power actuating part |
| US4883983A (en) * | 1988-07-08 | 1989-11-28 | Robertshaw Controls Company | Switching system for plural load circuit |
| DE4013074A1 (en) * | 1990-04-25 | 1991-10-31 | Ego Elektro Blanc & Fischer | ADJUSTABLE DEVICE, ESPECIALLY ELECTRICAL SWITCHING, CONTROL OR REGULATING DEVICE |
| DE4124668A1 (en) * | 1991-07-25 | 1993-01-28 | Ego Elektro Blanc & Fischer | CLUTCH DEVICE FOR SWITCHGEAR |
-
1997
- 1997-11-03 DE DE29719489U patent/DE29719489U1/en not_active Expired - Lifetime
-
1998
- 1998-06-30 EP EP98112074A patent/EP0913846B1/en not_active Expired - Lifetime
- 1998-06-30 AT AT98112074T patent/ATE263426T1/en not_active IP Right Cessation
- 1998-06-30 ES ES98112074T patent/ES2217459T3/en not_active Expired - Lifetime
- 1998-06-30 DE DE59811090T patent/DE59811090D1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| ES2217459T3 (en) | 2004-11-01 |
| DE59811090D1 (en) | 2004-05-06 |
| DE29719489U1 (en) | 1998-01-02 |
| ATE263426T1 (en) | 2004-04-15 |
| EP0913846A2 (en) | 1999-05-06 |
| EP0913846A3 (en) | 1999-12-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE19517525A1 (en) | Door closing drive system | |
| DE10147321A1 (en) | Switch mechanism for a circuit breaker | |
| EP0840336A2 (en) | Self-adjusting tappet-switch, in particular brake ligth switch | |
| EP0913846B1 (en) | Selector switch with thermostat for baking oven | |
| DE19914198A1 (en) | Reverse gear locking appliance for gear box | |
| EP0754827A2 (en) | Device for releasable and non-sliding of a handle on a bearing element, especially for door handles or window handles | |
| DE10053190B4 (en) | Gear with pawl | |
| WO1994003912A1 (en) | Switch for electrically operated devices | |
| EP0936643B1 (en) | Rotary switch assembly for electrical domestic devices | |
| WO2006021492A1 (en) | Actuating device for a vacuum cleaner comprising an integral spring element | |
| DE4121631C2 (en) | ||
| EP0177811B1 (en) | Control switch | |
| DE2824584A1 (en) | Multiple stage rotary switch - has rotor with contact bridge and latching rotor, both forming one piece module in tandem arrangement | |
| EP1135785B1 (en) | Time switch with an electric switch mechanism | |
| DE112009001916B4 (en) | Disk device | |
| EP0805293A1 (en) | Gear change mechanism with a device preventing an over-change | |
| DE2801135A1 (en) | Engagement pin on driver claw side - activates torque limiting coupling in area of driving engagement ring | |
| EP0754826A2 (en) | Bearing assembly for door handles | |
| EP0617446B1 (en) | Control apparatus, particularly power control apparatus for electric heating apparatus | |
| DE10208491A1 (en) | Slicer with safety switch | |
| DE3037287A1 (en) | REFRIGERATION | |
| EP0647954A1 (en) | Rotary drive | |
| DE2316549B2 (en) | Electric switch | |
| EP2149668A2 (en) | End position adjustment device | |
| EP3358091A1 (en) | Mixing cartridge with abutment sleeve which can be connected to the bearing sleeve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT CH DE DK ES FR GB IT LI SE |
|
| AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
| AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
| 17P | Request for examination filed |
Effective date: 19991126 |
|
| AKX | Designation fees paid |
Free format text: AT CH DE DK ES FR GB IT LI SE |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT CH DE DK ES FR GB IT LI SE |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH Ref country code: CH Ref legal event code: EP |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: KIRKER & CIE SA |
|
| REF | Corresponds to: |
Ref document number: 59811090 Country of ref document: DE Date of ref document: 20040506 Kind code of ref document: P |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20040602 |
|
| REG | Reference to a national code |
Ref country code: SE Ref legal event code: TRGR |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20040630 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040630 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2217459 Country of ref document: ES Kind code of ref document: T3 |
|
| ET | Fr: translation filed | ||
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed |
Effective date: 20050104 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20060529 Year of fee payment: 9 Ref country code: ES Payment date: 20060529 Year of fee payment: 9 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20060616 Year of fee payment: 9 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20060620 Year of fee payment: 9 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20060630 Year of fee payment: 9 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20060831 Year of fee payment: 9 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20060904 Year of fee payment: 9 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20070630 |
|
| EUG | Se: european patent has lapsed | ||
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20080229 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070701 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070630 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080101 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070630 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070630 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20070702 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070702 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070702 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070630 |