EP0069861A2 - Thermostat for electrically heated apparatuses - Google Patents

Thermostat for electrically heated apparatuses Download PDF

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Publication number
EP0069861A2
EP0069861A2 EP82104987A EP82104987A EP0069861A2 EP 0069861 A2 EP0069861 A2 EP 0069861A2 EP 82104987 A EP82104987 A EP 82104987A EP 82104987 A EP82104987 A EP 82104987A EP 0069861 A2 EP0069861 A2 EP 0069861A2
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EP
European Patent Office
Prior art keywords
contact spring
temperature switch
contact
disc
bimetallic 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.)
Withdrawn
Application number
EP82104987A
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German (de)
French (fr)
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EP0069861A3 (en
Inventor
Walter Hollweck
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.)
INTER CONTROL Hermann Koehler Electrik GmbH and Co KG
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INTER CONTROL Hermann Koehler Electrik GmbH and Co KG
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Application filed by INTER CONTROL Hermann Koehler Electrik GmbH and Co KG filed Critical INTER CONTROL Hermann Koehler Electrik GmbH and Co KG
Publication of EP0069861A2 publication Critical patent/EP0069861A2/en
Publication of EP0069861A3 publication Critical patent/EP0069861A3/en
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
    • H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
    • H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
    • H01H2037/5481—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting the bimetallic snap element being mounted on the contact spring

Definitions

  • the invention relates to a temperature switch for monitoring electrically heated devices, with an insulating support on which a contact spring is fastened on one side, which carries a contact at its free end with which it interacts with a mating contact which is also fixedly arranged on the insulating body, electrical connections, and with a bimetal disc, which is in operative connection with the contact spring, so that the contacts are opened or closed when a predetermined temperature is reached.
  • a temperature switch in which a contact spring is attached on one side to an insulating body, which carries at its free end a contact which cooperates with a counter contact fixedly arranged on the insulating body.
  • a contact spring is attached on one side to an insulating body, which carries at its free end a contact which cooperates with a counter contact fixedly arranged on the insulating body.
  • One or more bimetal disks are operatively connected to this contact spring, the bimetal disks having a hole in their center, which is used for concentric mounting on the contact spring.
  • the disadvantage of this design is the limited durability of the bimetallic discs, since the number of possible switching operations is reduced through the center hole. As the switching frequency increases, there is a risk that cracks will appear in the bimetallic disc starting from the center hole, which will lower the original stress state of the disc, resulting in a perfect snap characteristic is no longer guaranteed. This would also affect the switching behavior of the contacts. h, with such bimetallic discs, a momentary opening and closing of the contacts would no longer be possible.
  • OS 29 04 341 proposes to design the contact spring so that the bimetallic disc can be arranged ben without a center hole on the contact spring.
  • the contact spring has an embossed curvature in its center and resilient tabs on its two longitudinal sides, which are firmly connected to the contact spring at one end and angled at their free ends. Both resilient tabs have a slight pre-bend in the same direction as the impressed curvature in the center of the contact spring.
  • the bimetallic disc is held on the one hand by L-shaped tabs which are made out of the contact spring and on the other hand by the resilient tabs located on the long sides.
  • the invention therefore proposes to improve the temperature switch of the type described above to such an extent that a secure holding of the bimetallic disc on the contact spring is ensured, even if the temperature switch is influenced by external mechanical action.
  • the contact spring preferably has an angled extension on its two longitudinal edges, preferably in the middle, which serves to limit the side of the bimetallic disc arranged on the contact spring.
  • the bimetallic disc is arranged on the contact spring in such a way that it is held on the one hand by L-shaped tabs which are made out of the contact spring and on the other hand according to the invention by the angled extensions located on the longitudinal edges of the contact spring.
  • closed longitudinal slots are incorporated in the region of the longitudinal edges of the contact spring, as a result of which the angled extensions are resiliently bent outwards when the bimetal disc is attached to the contact spring, without the entire contact spring being bent.
  • the extension snaps over the edge of the bimetal disc so that it is fixed captively.
  • the L-shaped flaps which are made out of the contact spring, are bent obliquely upwards with the legs directed towards the center, so that the opening width between the leg ends and the contact spring thereby increased ensures that the bimetallic disc is inserted quickly.
  • This design of the contact spring is particularly advantageous because the easy assembly of the bimetallic disc enables automatic production to work more smoothly.
  • Tilting of the bimetallic disc is no longer possible due to the flat shape of the contact spring.
  • the bimetallic disc When the bimetallic disc is heated, it is supported with its edge zone on the L-shaped tabs and with its center on an embossed bulge in the center of the contact spring.
  • the contact spring necessarily follows the curvature of the bimetallic disc, so that the contacts are opened.
  • the angled extensions on the longitudinal edges of the contact spring are dimensioned such that in the switched state the edge of the bimetallic disc is lower than the end of the extensions.
  • a contact spring 3 is fastened on one side to the insulating body 1 by means of a rivet 2.
  • the contact spring 3 has a contact 4 at its free end, wel cher interacts with a mating contact 5 also fastened on the insulating body 1.
  • the contact spring 3 is biased towards the counter contact 5.
  • the mating contact 5 is simultaneously formed as a contact rivet by means of which the electrical connection 6 is held on the insulating body 1.
  • the second electrical connection is also fastened by means of the rivet 2.
  • the bimetallic disc 8 is arranged on the contact spring 3 in such a way that it is held on the one hand by L-shaped tabs 9 and 10 issued from the contact spring 3 and on the other hand by the angled extensions 11 and 12 located on the longitudinal edges of the contact spring 3.
  • closed slots 13 and 14 are arranged in the contact spring 3 on their longitudinal edges.
  • the angled extensions 11 and 12 on the contact spring 3 in particular prevent lateral displacement of the bimetal disc 8 in its two switching positions, since the edge zone 18 of the bimetal disc 8 is lower than the end 15, 16 of the extensions 11 and 12.
  • the legs 19 and 20 of the L-shaped tabs 9 and 10 directed towards the center are bent obliquely upwards, so that the opening width thereby increased between the leg ends 21 and 22 and the contact spring 3 ensures rapid insertion of the bimetal disk 8.
  • the bimetallic disc 8 If the bimetallic disc 8 is heated, its direction of curvature changes momentarily. It is supported with its center on the embossed curvature 17 in the center of the contact spring 3 and with its edge zone 18 on the L-shaped tabs 9 and 10 of the contact spring 3. The contact spring 3 thereby forcibly follows the curvature of the bimetallic disc 8, so that the contacts 4 and 5 are opened.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Thermally Actuated Switches (AREA)

Abstract

Die Erfindung betrifft einen Temperaturschalter zur Überwachung elektrisch beheizter Geräte, welcher eine sichere Halterung der Bimetallscheibe auf der Kontaktfeder gewährleistet, auch wenn der Temperaturschalter durch äussere mechanische Einwirkung beeinflusst wird. Die Bimetallscheibe wird einerseits durch L-förmige, aus der Kontaktfeder ausgestellte Lappen und andererseits durch die an den Längskanten der Kontaktfeder befindliche abgewinkelte Fortsätze gehalten. Im Bereich der Längskanten der Kontaktfeder sind geschlossene Längsschlitze eingearbeitet, wodurch die abgewinkelten Fortsätze beim Anbringen der Bimetallscheibe an der Kontaktfeder federnd nach aussen gebogen werden. Die L-förmig aus der Kontaktfeder ausgestellten Lappen sind mit den zum Zentrum gerichteten Schenkein schräg nach oben gebogen, sodass die dadurch vergrösserte Öffnungsweite zwischen den Schenkelenden und der Kontaktfeder ein zügiges Einschieben der Bimetallscheibe gewährleistet.The invention relates to a temperature switch for monitoring electrically heated devices, which ensures a secure mounting of the bimetallic disc on the contact spring, even if the temperature switch is influenced by external mechanical action. The bimetallic disc is held on the one hand by L-shaped tabs which are made out of the contact spring and on the other hand by the angled extensions located on the longitudinal edges of the contact spring. Closed longitudinal slots are incorporated in the area of the longitudinal edges of the contact spring, as a result of which the angled extensions are resiliently bent outwards when the bimetal disc is attached to the contact spring. The L-shaped tabs flared out of the contact spring are bent obliquely upwards with the legs directed towards the center, so that the resulting increased opening width between the leg ends and the contact spring ensures that the bimetallic disc is inserted quickly.

Description

Die Erfindung betrifft einen Temperaturschalter zur Überwachung elektrisch beheizter Geräte, mit einem lsolierträger, auf dem eine Kontaktfeder einseitig befestigt ist, welche an ihrem freien Ende einen Kontakt tragt, mit dem sie mit einem ebenfalls auf dem Isolierkörper fest angeordneten Gegenkontakt zusammenwirkt, elektrischen Anschlüssen, sowie mit einer Bimetallscheibe, welche mit der Kontaktfeder in Wirkverbindung steht, sodass bei Erreichen einer vorbestimmten Temperatur die Kontakte geöffnet bzw. geschlossen werden.The invention relates to a temperature switch for monitoring electrically heated devices, with an insulating support on which a contact spring is fastened on one side, which carries a contact at its free end with which it interacts with a mating contact which is also fixedly arranged on the insulating body, electrical connections, and with a bimetal disc, which is in operative connection with the contact spring, so that the contacts are opened or closed when a predetermined temperature is reached.

Durch die OS 28 21 457.5 ist ein Temperatu rschalter bekannt, bei welchem auf einem lsolierkörper eine Kontaktfeder einseitig befestigt ist, welche an ihrem freien Ende einen Kontakt trägt, der mit einem auf dem Isolierkörper fest angeordneten Gegenkontakt zusammenwirkt. Mit dieser Kontaktfeder stehen ein oder mehrere Bimetallscheiben in Wirkverbindung, wobei die Bimetallscheiben in ihrem Zentrum ein Loch aufweisen, das zur konzentrischen Halterung auf der Kontaktfeder dient.From OS 28 21 457.5 a temperature switch is known, in which a contact spring is attached on one side to an insulating body, which carries at its free end a contact which cooperates with a counter contact fixedly arranged on the insulating body. One or more bimetal disks are operatively connected to this contact spring, the bimetal disks having a hole in their center, which is used for concentric mounting on the contact spring.

Der Nachteil dieser Ausführung ist die begrenzte Haltbarkeit der Bimetallscheiben, da durch das Mittelloch die Anzahl der möglichen Schaltungen herabgesetzt wird. Mit zunehmender Schalthäufigkeit besteht dabei die Gefahr, dass ausgehend vom Mittelloch Risse in der Bimetallscheibe auftreten, die den ursprünglichen Spannungszustand der Scheibe herabsetzen, sodass eine einwandfreie Schnappcharakteristik nicht mehr gewährleistet ist. Dies würde sich auch auf das Schaltverhalten der Kontakte auswirken, d. h, bei derartigen Bimetallscheiben würde ein momentartiges Öffnen und Schliessen der Kontakte nicht mehr möglich sein.The disadvantage of this design is the limited durability of the bimetallic discs, since the number of possible switching operations is reduced through the center hole. As the switching frequency increases, there is a risk that cracks will appear in the bimetallic disc starting from the center hole, which will lower the original stress state of the disc, resulting in a perfect snap characteristic is no longer guaranteed. This would also affect the switching behavior of the contacts. h, with such bimetallic discs, a momentary opening and closing of the contacts would no longer be possible.

Um diesen Nachteil zu vermeiden, schlögt die OS 29 04 341 (Zusatz zu P 28 21 457.5) vor, die Kontaktfeder so zu gestalten, dass Bimetallscheibe ben ohne Mittelloch an der Kontaktfeder angeordnet werden können. Die Kontaktfeder besitzt hierbei in ihrem Zentrum eine geprägte Wölbung und an ihren beiden Längsseiten federnde Lappen, die an einem Ende fest mit der Kontaktfeder verbunden und an ihren freien Enden abgewinkelt sind. Beide federnden Lappen weisen eine geringe Vorbiegung in gleicher Richtung wie die eingeprägte Wölbung im Zentrum der Kontaktfeder auf.To avoid this disadvantage, OS 29 04 341 (addition to P 28 21 457.5) proposes to design the contact spring so that the bimetallic disc can be arranged ben without a center hole on the contact spring. The contact spring has an embossed curvature in its center and resilient tabs on its two longitudinal sides, which are firmly connected to the contact spring at one end and angled at their free ends. Both resilient tabs have a slight pre-bend in the same direction as the impressed curvature in the center of the contact spring.

Die Bimetallscheibe wird einerseits durch L-förmige, aus der Kontaktfeder ausgestellte Lappen und andererseits durch die an den Längsseiten befindlichen federnden Lappen gehalten.The bimetallic disc is held on the one hand by L-shaped tabs which are made out of the contact spring and on the other hand by the resilient tabs located on the long sides.

Besonders nachteilig hat sich bei dieser Kontaktfedergestalt jedoch erwiesen, dass sich bei öusserer Einwirkung einer mechanischen Kraft auf einen der beiden federnden Lappen, z. B. während des Transports oder bei der Montage des Temperaturschalters in einem Elektrogerät, die Bimetallscheibe seitlich aus ihrer Halterung verschiebt und sich dann von der Kontaktfeder löst.It has proven particularly disadvantageous with this contact spring shape, however, that when a mechanical force acts on one of the two resilient tabs, e.g. B. during transport or when installing the temperature switch in an electrical device, the bimetallic disc moves laterally out of its holder and then detaches from the contact spring.

Ein weiterer Nachteil der federnden Lappen ist der an der Kontaktfeder auftretende unterschiedliche Kontaktdruck, hervorgerufen durch ungleichmässige Abwinkelung bzw. durch nachträgliches Verbiegen der Lappen.Another disadvantage of the resilient tabs is the different contact pressure occurring at the contact spring, caused by uneven bending or by subsequent bending of the tabs.

Die Erfindung schlägt deshalb vor, den Temperaturschalter der vorstehend beschriebenen Art so weit zu verbessern, dass eine sichere, Halterung der Bimetallscheibe auf der Kontaktfeder gewährleistet ist, auch wenn der Temperaturschalter durch äussere mechanische Einwirkung beeinflusst wird.The invention therefore proposes to improve the temperature switch of the type described above to such an extent that a secure holding of the bimetallic disc on the contact spring is ensured, even if the temperature switch is influenced by external mechanical action.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass bei dem eingangs beschriebenen Temperatur schalter die Kontaktfeder an ihren beiden Längskanten vorzugsweise in der Mitte jeweils einen abgewinkelten Fortsatz aufweist, welcher zur Seitenbegrenzung der auf der Kontaktfeder angeordneten Bimetallscheibe dient.This object is achieved in that, at the temperature switch described above, the contact spring preferably has an angled extension on its two longitudinal edges, preferably in the middle, which serves to limit the side of the bimetallic disc arranged on the contact spring.

Die Bimetallscheibe ist auf der Kontaktfeder so angeordnet, dass sie einerseits durch L-förmige, aus der Kontaktfeder ausgestellteLappen und andererseits nach der Erfindung durch die an den Längskanten der Kontaktfeder befindliche abgewinkelte Fortsätze gehalten wird.The bimetallic disc is arranged on the contact spring in such a way that it is held on the one hand by L-shaped tabs which are made out of the contact spring and on the other hand according to the invention by the angled extensions located on the longitudinal edges of the contact spring.

Erfindungsgemäß sind im Bereich der Längkanten der Kontaktfeder geschlossene Längsschlitze eingearbeitet, wodurch die abgewinkelten Fortsätze beim Anbringen der Bimetallscheibe an der Kontaktfeder federnd nach aussen gebogen werden, ohne dass die gesamte Kontaktfeder verbogen wird. Wenn die Bimetallscheibe ihre Endposition erreicht hat, schnappt der Fortsatz über den Rand der Bimetallscheibe, sodass diese unverlierbar fixiert ist.According to the invention, closed longitudinal slots are incorporated in the region of the longitudinal edges of the contact spring, as a result of which the angled extensions are resiliently bent outwards when the bimetal disc is attached to the contact spring, without the entire contact spring being bent. When the bimetal disc has reached its end position, the extension snaps over the edge of the bimetal disc so that it is fixed captively.

Die L-förmig aus der Kontaktfeder ausgestellten Lappen sind mit den zum Zentrum gerichteten Schenkeln schräg nach oben gebogen, sodass die dadurch vergrösserte Öffnungsweite zwischen den Schenkelenden und der Kontaktfeder ein zügiges Einschieben der Bimetallscheibe gewährleistet.The L-shaped flaps, which are made out of the contact spring, are bent obliquely upwards with the legs directed towards the center, so that the opening width between the leg ends and the contact spring thereby increased ensures that the bimetallic disc is inserted quickly.

Besonders vorteilhaft ist diese Gestaltung der Kontaktfeder deshalb, da durch die leichte Montage der Bimetallscheibe eine automatische Fertigung störungsfreier arbeiten kann.This design of the contact spring is particularly advantageous because the easy assembly of the bimetallic disc enables automatic production to work more smoothly.

Ein Verkanten der Bimetallscheibe ist aufgrund der flachen Form der Kontaktfeder nicht mehr möglich.Tilting of the bimetallic disc is no longer possible due to the flat shape of the contact spring.

Wenn die Bimetallscheibe erwärmt wird, stützt sie sich mit ihrer Randzone an den L-förmigen Lappen und mit ihrem Zentrum an einer eingeprägten Wölbung im Zentrum der Kontaktfeder ab. Die Kontaktfeder folgt dabei zwangsweise der Krümmung der Bimetallscheibe, sodass die Kontakte geöffnet werden.When the bimetallic disc is heated, it is supported with its edge zone on the L-shaped tabs and with its center on an embossed bulge in the center of the contact spring. The contact spring necessarily follows the curvature of the bimetallic disc, so that the contacts are opened.

Die abgewinkelten Fortsätze an den Längskanten der Kontaktfeder sind so dimensioniert, dass im geschalteten Zustand der Rand der Bimetallscheibe tiefer liegt als das Ende der Fortsätze.The angled extensions on the longitudinal edges of the contact spring are dimensioned such that in the switched state the edge of the bimetallic disc is lower than the end of the extensions.

Nachfolgend wird die Erfindung anhand schematischer Zeichnungen näher erlautert. Es zeigen:

  • Fig. 1 den Temperaturschalter nach der Erfindung im Ruhezustand
  • Fig. 2 den Temperaturschalter mit geöffneten Kontakten,
  • Fig. 3 die Kontaktfeder als Einzelteil von der Seite gesehen,
  • Fig. 4 die Kontaktfeder als Einzelteil von oben gesehen.
The invention is explained in more detail below with the aid of schematic drawings. Show it:
  • Fig. 1 shows the temperature switch according to the invention in the idle state
  • 2 the temperature switch with open contacts,
  • 3 seen the contact spring as an individual part from the side,
  • Fig. 4 seen the contact spring as a single part from above.

Auf dem Isolierkörper 1 ist mittels eines Nietes 2 eine Kontaktfeder 3 einseitig befestigt. Die Kontaktfeder 3 weist an ihrem freien Ende einen Kontakt 4 auf, welcher mit einem ebenfalls auf dem Isolierkörper 1 befestigten Gegenkontakt 5 zusammenwirkt. Die Kontaktfeder 3 ist dabei in Richtung zum Gegenkontakt 5 vorgespannt. Der Gegenkontakt 5 ist gleichzeitig als Kontaktniet ausgebildet, mittels dessen der elektrische Anschluss 6 am Isolierkörper 1 gehalten ist. Ebenso ist auch der zweite elektrische Anschluss mittels des Nietes 2 befestigt.A contact spring 3 is fastened on one side to the insulating body 1 by means of a rivet 2. The contact spring 3 has a contact 4 at its free end, wel cher interacts with a mating contact 5 also fastened on the insulating body 1. The contact spring 3 is biased towards the counter contact 5. The mating contact 5 is simultaneously formed as a contact rivet by means of which the electrical connection 6 is held on the insulating body 1. The second electrical connection is also fastened by means of the rivet 2.

Die Bimetallscheibe 8 ist auf der Kontaktfeder 3 so angeordnet, dass sie einerseits durch L-förmige, aus der Kontaktfeder 3 ausgestellte Lappen 9 und 10 und andererseits durch die an den Längskanten der Kontaktfeder 3 befindlichen abgewinkelten Fortsätze 11 und 12 gehalten wird.The bimetallic disc 8 is arranged on the contact spring 3 in such a way that it is held on the one hand by L-shaped tabs 9 and 10 issued from the contact spring 3 and on the other hand by the angled extensions 11 and 12 located on the longitudinal edges of the contact spring 3.

Wie aus den Fig. 3 und 4 ersichtlich ist, sind in der Kontaktfeder 3 an ihren Längskanten geschlossene Schlitze 13 und 14 angeordnet.As can be seen from FIGS. 3 and 4, closed slots 13 and 14 are arranged in the contact spring 3 on their longitudinal edges.

Die abgewinkelten Fortsätze 11 bzw. 12 an der Kontaktfeder 3 verhindern insbesondere ein seitliches Verschieben der Bimetallscheibe 8 in ihren beiden Schaltstellungen, da die Randzone 18 der Bimetallscheibe 8 tiefer liegt als das Ende 15, 16 der Fortsätze 11 bzw. 12.The angled extensions 11 and 12 on the contact spring 3 in particular prevent lateral displacement of the bimetal disc 8 in its two switching positions, since the edge zone 18 of the bimetal disc 8 is lower than the end 15, 16 of the extensions 11 and 12.

Die zum Zentrum gerichteten Schenkel 19 bzw. 20 der L-förmigen Lappen 9 bzw. 10 sind schräg nach oben gebogen, sodass die dadurch vergrösserte Öffnungsweite zwischen den Schenkelenden 21 bzw. 22 und der Kontaktfeder 3 ein zügiges Einschieben der Bimetallscheibe 8 gewährleistet.The legs 19 and 20 of the L-shaped tabs 9 and 10 directed towards the center are bent obliquely upwards, so that the opening width thereby increased between the leg ends 21 and 22 and the contact spring 3 ensures rapid insertion of the bimetal disk 8.

Wird die Bimetallscheibe 8 erwärmt, so ändert sich ihre Wölbungsrichtung momentartig. Dabei stützt sie sich mit ihrem Zentrum an der eingeprägten Wölbung 17 im Zentrum der Kontaktfeder 3 und mit ihrer Randzone 18 an den L-förmigen Lappen 9 bzw. 10 der Kontaktfeder 3 ab. Die Kontaktfeder 3 folgt dadurch zwangsweise der Krümmung der Bimetallscheibe 8, sodass die Kontakte 4 und 5 geöffnet werden.If the bimetallic disc 8 is heated, its direction of curvature changes momentarily. It is supported with its center on the embossed curvature 17 in the center of the contact spring 3 and with its edge zone 18 on the L-shaped tabs 9 and 10 of the contact spring 3. The contact spring 3 thereby forcibly follows the curvature of the bimetallic disc 8, so that the contacts 4 and 5 are opened.

Claims (3)

1. Temperaturschalter für elektrisch beheizte Geräte mit einem Isolierkörper, auf dem eine Kontaktfeder einseitig befestigt ist, welche an ihrem freien Ende einen Kontakt trägt, mit dem sie mit einem ebenfalls auf dem Isolierkörper fest angeordneten Gegenkontakt zusammenwirkt, elektrischen Anschlüssen, sowie einer Bimetallscheibe, die auf der Kontaktfeder frei beweglich gelagert ist, dadurch gekennzeichnet, dass die Kontaktfeder (3) an ihren Längskanten abgewinkelte Fortsätze (11) bzw. (12) aufweist.1.Temperature switch for electrically heated devices with an insulating body on which a contact spring is fastened on one side, which carries at its free end a contact with which it interacts with a counter contact also fixedly arranged on the insulating body, electrical connections, and a bimetallic disc which is freely movable on the contact spring, characterized in that the contact spring (3) has angled extensions (11) or (12) on its longitudinal edges. 2. Temperaturschalter nach Anspruch 1, dadurch gekennzeichnet, dass die Kontaktfeder (3) im Bereich ihrer Längskanten geschlossene Schlitze (13) und (14) aufweist.2. Temperature switch according to claim 1, characterized in that the contact spring (3) in the region of its longitudinal edges has closed slots (13) and (14). 3. Temperaturschalter noch den Ansprüchen 1 und 2, dadurch gekennzeichnet, dass die zum Zentrum gerichteten Schenkel (19) bzw. (20) der L-förmigen Lappen (9) bzw. (10) schräg nach oben gerichtet sind.3. Temperature switch nor claims 1 and 2, characterized in that the legs (19) or (20) of the L-shaped tabs (9) or (10) directed towards the center are directed obliquely upwards.
EP82104987A 1981-07-15 1982-06-08 Thermostat for electrically heated apparatuses Withdrawn EP0069861A3 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE8120660U DE8120660U1 (en) 1981-07-15 1981-07-15 Temperature switch for electrically heated devices
DE19813127852 DE3127852A1 (en) 1981-07-15 1981-07-15 TEMPERATURE SWITCH FOR ELECTRICALLY HEATED EQUIPMENT
DE3127852 1981-07-15

Publications (2)

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EP0069861A2 true EP0069861A2 (en) 1983-01-19
EP0069861A3 EP0069861A3 (en) 1984-10-17

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EP82104987A Withdrawn EP0069861A3 (en) 1981-07-15 1982-06-08 Thermostat for electrically heated apparatuses

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US (1) US4445107A (en)
EP (1) EP0069861A3 (en)
DE (2) DE3127852A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3703826A1 (en) * 1987-02-07 1988-08-18 Limitor Ag Electrical thermal bimetallic switch

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4139091C2 (en) * 1991-11-28 2002-02-07 Hofsaes Geb Zeitz Temperature switch in a sealed housing
JP3787482B2 (en) * 2000-04-17 2006-06-21 ウチヤ・サーモスタット株式会社 Thermal protector
DE112006002712B4 (en) * 2005-10-14 2011-10-27 Uchiya Thermostat Co., Ltd. temperature switch

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3936788A (en) * 1973-11-06 1976-02-03 Uchiya Co., Ltd. Thermobimetal-carrying elastic member and temperature-control circuit component using the member as sensing element
FR2346844A1 (en) * 1976-03-31 1977-10-28 Thermostat & Schaltgeraetebau Bimetal strip temp. controller - has pretensioned bimetal strip divided in three strips, with middle strip bent towards adjuster
GB2021322A (en) * 1978-05-17 1979-11-28 Inter Control Koehler Hermann Temperature-sensitive switch for electrically heated appliances
GB2083709A (en) * 1979-02-06 1982-03-24 Inter Control Koehler Hermann Temperature-sensitive switch for electrically heated appliances
EP0058372A1 (en) * 1981-02-11 1982-08-25 Limitor AG Thermal switch with bimetallic element

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT292102B (en) * 1969-12-09 1971-08-10 Electrovac Hacht & Huber Fabri Thermal switch and process for its manufacture
DE2821457A1 (en) * 1978-05-17 1979-11-22 Inter Control Koehler Hermann Bimetallic strip temp. switch for appliance - has spring linked to strip with cylindrical bolt in hole acting as pivot
DE2831198C2 (en) * 1978-07-15 1982-11-04 Limitor AG, 8022 Zürich Bimetal temperature switch

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3936788A (en) * 1973-11-06 1976-02-03 Uchiya Co., Ltd. Thermobimetal-carrying elastic member and temperature-control circuit component using the member as sensing element
FR2346844A1 (en) * 1976-03-31 1977-10-28 Thermostat & Schaltgeraetebau Bimetal strip temp. controller - has pretensioned bimetal strip divided in three strips, with middle strip bent towards adjuster
GB2021322A (en) * 1978-05-17 1979-11-28 Inter Control Koehler Hermann Temperature-sensitive switch for electrically heated appliances
GB2083709A (en) * 1979-02-06 1982-03-24 Inter Control Koehler Hermann Temperature-sensitive switch for electrically heated appliances
EP0058372A1 (en) * 1981-02-11 1982-08-25 Limitor AG Thermal switch with bimetallic element

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3703826A1 (en) * 1987-02-07 1988-08-18 Limitor Ag Electrical thermal bimetallic switch

Also Published As

Publication number Publication date
EP0069861A3 (en) 1984-10-17
DE8120660U1 (en) 1990-08-16
DE3127852C2 (en) 1989-09-28
DE3127852A1 (en) 1983-02-03
US4445107A (en) 1984-04-24

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