EP0951040A2 - Thermally actuated switch - Google Patents
Thermally actuated switch Download PDFInfo
- Publication number
- EP0951040A2 EP0951040A2 EP99100553A EP99100553A EP0951040A2 EP 0951040 A2 EP0951040 A2 EP 0951040A2 EP 99100553 A EP99100553 A EP 99100553A EP 99100553 A EP99100553 A EP 99100553A EP 0951040 A2 EP0951040 A2 EP 0951040A2
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- EP
- European Patent Office
- Prior art keywords
- switch
- connection
- connection electrodes
- resistance part
- electrodes
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- 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.)
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
- H01H1/504—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by thermal means
Definitions
- the present invention relates to a temperature dependent Switch with two connection electrodes attached to an insulation support, a rear derailleur that depends on its temperature an electrically conductive connection between the two connection electrodes, and a resistance part, the electrically parallel to the rear derailleur with the two connection electrodes is connected.
- Such a switch is known from DE-OS 21 13 388.
- the known switch is a thermostat to protect an electrical one Device that is electrically in series with the one to be protected Device is switched and in thermal contact with the Device is.
- connection electrodes are flat metal parts, from one with a fixed counter contact and the other with a bimetallic part carries, at its free end one with the fixed counter contact interacting movable counter contact sits.
- the two metal parts are arranged one above the other and clamp a PTC resistor between them, with the interposition a spring in electrical contact with both connection electrodes stands.
- This structure made of insulation supports, metal parts with fixed and Movable counter contact as well as PTC resistor is in one housing inserted, whereupon the housing opening with a sealing compound is shed.
- the known switch has the disadvantage that the PTC resistor only mechanically when the switch is fully assembled holds, the assembly of this switch is quite expensive. It is not possible to replace the PTC resistor.
- This known switch includes a bimetal switchgear arranged in an encapsulated housing.
- the housing is arranged on a carrier plate, on the conductor tracks and resistors are provided. Outside a PTC resistor is provided on the carrier of the housing, which is soldered parallel to the rear derailleur with external connections is.
- This switch has the disadvantage that it is relative on the one hand requires many components and has large dimensions.
- the temperature-dependent switch mentioned above to further train that it is inexpensive and easy to assemble is, preferably an exchange of the resistance part should be possible.
- the inventors of the present application have recognized that that a surprisingly simple switch is created when the resistance part is not inside the switch or on one separate carrier is arranged next to the switch, but is held directly on the outside of the insulation support. Of the The switch can then be completely assembled, before the resistor part is then attached from the outside becomes. If the resistance part is dispensed with, it is missing the switch the self-holding function, which in many applications however is sufficient.
- the switch should have a self-holding function the resistance part is only to be attached from the outside, that e.g. soldered to the two connection electrodes can be.
- the DE-OS 21 13 388 mentioned at the beginning opens against it this partial manufacture of the switch is not that inside the housing PTC resistor clamped between the connection electrodes had to be correct during production Interpretation are supplied.
- the new switch offers the advantage that the basic switch is prefabricated and then, depending on your choice, with a Resistance can be added later. Because this way the basic switch in a single production step in very much larger number of pieces can be produced because namely the specialization of the switch is only determined retrospectively overall, there is also a reduction in production costs, since the lot size in the manufacture of the basic switch can be significantly larger than the generic switch.
- the two Connection electrodes include flat metal parts that are next to each other are arranged in one plane and if the resistance part rests on the metal parts.
- connection electrodes takes place through the geometric arrangement of the Resistor part on the connection electrodes, where by the Isolation part are kept.
- soldering or a similar connection technology can possibly even be used to be dispensed with.
- the insulation carrier has projections is provided, the resistance part between them clamp and press on the connection electrodes.
- connection electrode a fixed mating contact and the other a bimetal part carries, at its free end one with the fixed counter contact interacting movable counter contact sits.
- This measure has the advantage that a technically very simple switchgear is used, in which the operating current flows over the bimetal part itself, so that on another Spring part can be dispensed with.
- the resistance part is a PTC block is.
- 10 denotes a temperature-dependent switch, which comprises an insulation support 11, on which two in Fig. 1 connecting electrodes 12, 13 shown in dashed lines are.
- the connection electrode 13 is L-shaped and the connection electrode 12 Z-shaped, so that they are in the longitudinal axis 14 of the switch 10 with their contact ends 12a, 13a on each other to assign.
- connection electrodes 12, 13 include sheet metal parts that are side by side are arranged in a plane indicated at 15. Under the Connection electrodes 12, 13 are soldered lead wires 16, 17, which serve the external connection of the switch 10.
- a resistance part 18 lies on the connection electrodes 12, 13 that in the exemplary embodiment shown is a PTC block 19 is.
- the insulation support 11 is on its sides with in Fig. 1 left-hand, resilient projections 21, 22 provided run perpendicular to level 15 and out of the drawing level of Fig. 2 extend out.
- the projections 21, 22 clamp the PTC block 19 between them and overlap with each a bead 23 or 24, whereby the PTC block 19 on the Connection electrodes 12, 13 is pressed.
- the PTC block 19 can 1 laterally from the left between the connection electrodes 12, 13 and the projections 21, 22 are inserted so that he sits on the outside of the insulation support 11, held by this is and simultaneously in parallel between the two connection electrodes 12, 13 is switched.
- connection electrode 12 carries one at its contact end 12a fixed counter contact 28 with a movable counter contact 29 works together on a free end of a bimetal spring 31 is arranged. At its other end 32 is the bimetal spring 31 with a bent part 33 of the connection electrode 13 connected.
- the bimetal spring is in the position shown in FIG. 3 31 in its low temperature position, in which it moves Mating contact 29 presses against the fixed mating contact 28, so that an electrically conductive connection between the two Connection electrodes 12, 13 is produced.
- the switch 10 With its connection electrodes 12, 13, the switch 10 in series with one electrical device to be protected in an electrical circuit switched, the operating current of the device over the Connection electrodes 12, 13 and the bimetal spring 31 performed becomes. Now the temperature of the switch 10 increases and thus the bimetal spring 31 beyond the switching temperature, so the bimetallic spring 31 lifts the movable counter contact 29 from the fixed counter contact 28, whereby the circuit is interrupted so that the protected device is switched off.
- the PTC block 19 can differ in terms of its resistance value be designed, whereby different switching temperatures can be obtained. All that is required is different PTC blocks 19 between the resilient Projections 21, 22 and the connection electrodes 12, 13 too push.
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- Thermally Actuated Switches (AREA)
- Thermistors And Varistors (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Control Of Combustion (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft einen temperaturabhängigen Schalter mit zwei an einem Isolationsträger befestigten Anschlußelektroden, einem Schaltwerk, das in Abhängigkeit von seiner Temperatur eine elektrisch leitende Verbindung zwischen den beiden Anschlußelektroden herstellt, sowie einem Widerstandsteil, das elektrisch parallel zu dem Schaltwerk mit den beiden Anschlußelektroden verbunden ist. The present invention relates to a temperature dependent Switch with two connection electrodes attached to an insulation support, a rear derailleur that depends on its temperature an electrically conductive connection between the two connection electrodes, and a resistance part, the electrically parallel to the rear derailleur with the two connection electrodes is connected.
Ein derartiger Schalter ist aus der DE-OS 21 13 388 bekannt.Such a switch is known from DE-OS 21 13 388.
Der bekannte Schalter ist ein Thermostat zum Schutz eines elektrischen Gerätes, der elektrisch in Reihe mit dem zu schützenden Gerät geschaltet wird und in thermischem Kontakt mit dem Gerät ist.The known switch is a thermostat to protect an electrical one Device that is electrically in series with the one to be protected Device is switched and in thermal contact with the Device is.
Die beiden Anschlußelektroden sind flächige Metallteile, von denen eines einen festen Gegenkontakt und das andere ein Bimetallteil trägt, an dessen freiem Ende ein mit dem festen Gegenkontakt zusammenwirkender beweglicher Gegenkontakt sitzt. Die beiden Metallteile sind übereinander angeordnet und klemmen zwischen sich einen PTC-Widerstand ein, der unter Zwischenschaltung einer Feder in elektrischem Kontakt mit beiden Anschlußelektroden steht.The two connection electrodes are flat metal parts, from one with a fixed counter contact and the other with a bimetallic part carries, at its free end one with the fixed counter contact interacting movable counter contact sits. The two metal parts are arranged one above the other and clamp a PTC resistor between them, with the interposition a spring in electrical contact with both connection electrodes stands.
Dieser Aufbau aus Isolationsträger, Metallteilen mit festem und beweglichem Gegenkontakt sowie PTC-Widerstand wird in ein Gehäuse eingeschoben, woraufhin die Gehäuseöffnung mit einer Abdichtmasse vergossen wird.This structure made of insulation supports, metal parts with fixed and Movable counter contact as well as PTC resistor is in one housing inserted, whereupon the housing opening with a sealing compound is shed.
Wenn die Temperatur des zu schützenden Gerätes den Ansprechwert des Bimetallteiles übersteigt, hebt dieses den beweglichen von dem festen Gegenkontakt ab, wodurch die Stromzufuhr zu dem Gerät unterbrochen wird. Ein kleiner Reststrom fließt jetzt durch den parallel zu dem so gebildeten Schaltwerk angeordneten PTC-Widerstand, der dabei so viel Wärme entwickelt, daß er das Schaltwerk geöffnet hält; diese Funktion wird Selbsthaltung genannt. If the temperature of the device to be protected the response value of the bimetallic part, this lifts the movable of the fixed mating contact, which leads to the power supply to the device is interrupted. A small residual current now flows through the PTC resistor arranged parallel to the switching mechanism thus formed, who develops so much warmth that he Rear derailleur keeps open; this function is called self-retention.
Bei dem bekannten Schalter ist von Nachteil, daß der PTC-Widerstand nur bei einem fertig montierten Schalter mechanisch hält, wobei die Montage dieses Schalters recht aufwendig ist. Der Austausch des PTC-Widerstandes ist nicht möglich.The known switch has the disadvantage that the PTC resistor only mechanically when the switch is fully assembled holds, the assembly of this switch is quite expensive. It is not possible to replace the PTC resistor.
Ein weiterer, selbsthaltender temperaturabhängiger Schalter ist aus der DE 43 36 564 A1 bekannt. Dieser bekannte Schalter umfaßt ein in einem gekapselten Gehäuse angeordnetes Bimetall-Schaltwerk. Das Gehäuse ist auf einer Trägerplatte angeordnet, auf der Leiterbahnen und Widerstände vorgesehen sind. Außerhalb des Gehäuses ist auf dem Träger ein PTC-Widerstand vorgesehen, der parallel zu dem Schaltwerk mit Außenanschlüssen verlötet ist.Another, self-holding temperature-dependent switch is known from DE 43 36 564 A1. This known switch includes a bimetal switchgear arranged in an encapsulated housing. The housing is arranged on a carrier plate, on the conductor tracks and resistors are provided. Outside a PTC resistor is provided on the carrier of the housing, which is soldered parallel to the rear derailleur with external connections is.
Bei diesem Schalter ist von Nachteil, daß er zum einen relativ viele Bauteile benötigt und zum anderen große Abmessungen aufweist.This switch has the disadvantage that it is relative on the one hand requires many components and has large dimensions.
Vor diesem Hintergrund ist es Aufgabe der vorliegenden Erfindung, den eingangs genannten temperaturabhängigen Schalter derart weiterzubilden, daß er preiswert und einfach zu montieren ist, wobei vorzugsweise ein Austausch des Widerstandsteiles möglich sein soll.Against this background, it is an object of the present invention the temperature-dependent switch mentioned above to further train that it is inexpensive and easy to assemble is, preferably an exchange of the resistance part should be possible.
Diese Aufgabe wird erfindungsgemäß bei dem eingangs genannten Schalter dadurch gelöst, daß das Widerstandsteil außen an dem Isolationsträger sitzt und von diesem gehalten wird.This object is achieved according to the invention in the aforementioned Switch solved in that the resistance part outside on the Insulation carrier sits and is held by this.
Die der Erfindung zugrundeliegende Aufgabe wird auf diese Weise vollkommen gelöst. The object on which the invention is based is achieved in this way completely solved.
Die Erfinder der vorliegenden Anmeldung haben nämlich erkannt, daß ein überraschend einfacher Schalter geschaffen wird, wenn das Widerstandsteil nicht innen in dem Schalter oder auf einem gesonderten Träger neben dem Schalter angeordnet wird, sondern unmittelbar außen an dem Isolationsträger gehalten wird. Der Schalter kann dann zunächst vollständig konfektioniert werden, bevor dann das Widerstandsteil nachträglich von außen aufgesetzt wird. Wenn auf das Widerstandsteil verzichtet wird, fehlt dem Schalter die Selbsthaltefunktion, was in vielen Anwendungsfällen jedoch ausreichend ist.The inventors of the present application have recognized that that a surprisingly simple switch is created when the resistance part is not inside the switch or on one separate carrier is arranged next to the switch, but is held directly on the outside of the insulation support. Of the The switch can then be completely assembled, before the resistor part is then attached from the outside becomes. If the resistance part is dispensed with, it is missing the switch the self-holding function, which in many applications however is sufficient.
Soll der Schalter dagegen mit einer Selbsthaltefunktion versehen werden, so ist lediglich von außen das Widerstandsteil anzubringen, das z.B. mit den beiden Anschlußelektroden verlötet werden kann. Bei ein und demselben Grundschalter können jetzt wahlweise unterschiedliche Widerstandsteile eingesetzt werden, um unterschiedlichen Einsatzbedingungen bezüglich Betriebsstrom und Ansprechtemperatur gerecht zu werden. Damit ergibt sich ein großer Fertigungsvorteil, weil nämlich der Schalter als solches in großem Umfange vorgefertigt werden kann, so daß später nur noch die unterschiedlichen Widerstände zuzuführen sind. Diese Möglichkeit hat auch schon der aus der eingangs erwähnten DE 43 36 564 A1 bekannte Schalter geboten, dort war die nachträgliche Montage des Widerstandsteiles jedoch sehr aufwendig. Die eingangs weiter erwähnte DE-OS 21 13 388 eröffnet dagegen diese Teilfertigung des Schalters nicht, der im Inneren des Gehäuses zwischen den Anschlußelektroden eingeklemmte PTC-Widerstand mußte bereits während der Fertigung in richtiger Auslegung zugeführt werden. On the other hand, the switch should have a self-holding function the resistance part is only to be attached from the outside, that e.g. soldered to the two connection electrodes can be. With one and the same basic switch you can now different resistance parts can be used, to different operating conditions regarding operating current and response temperature. This results in a great manufacturing advantage, because the switch as such can be prefabricated on a large scale, so that later only the different resistances have to be added. This There is also the possibility from the one mentioned at the beginning DE 43 36 564 A1 known switches offered, there was the subsequent Assembly of the resistance part, however, is very complex. The DE-OS 21 13 388 mentioned at the beginning opens against it this partial manufacture of the switch is not that inside the housing PTC resistor clamped between the connection electrodes had to be correct during production Interpretation are supplied.
Zusammenfassend bietet der neue Schalter also den Vorteil, daß der Grundschalter vorgefertigt und dann je nach Wahl mit einem Widerstand nachträglich versehen werden kann. Da auf diese Weise der Grundschalter in einem einzigen Fertigungsgang in sehr viel größerer Stückzahl hergestellt werden kann, weil nämlich die Spezialisierung des Schalters erst nachträglich festgelegt wird, ergibt sich insgesamt auch eine Senkung der Produktionskosten, da die Losgröße bei der Fertigung des Grundschalters deutlich größer sein kann als bei dem gattungsbildenden Schalter.In summary, the new switch offers the advantage that the basic switch is prefabricated and then, depending on your choice, with a Resistance can be added later. Because this way the basic switch in a single production step in very much larger number of pieces can be produced because namely the specialization of the switch is only determined retrospectively overall, there is also a reduction in production costs, since the lot size in the manufacture of the basic switch can be significantly larger than the generic switch.
In einer Weiterbildung ist es dann bevorzugt, wenn die beiden Anschlußelektroden flächige Metallteile umfassen, die nebeneinander in einer Ebene angeordnet sind, und wenn das Widerstandsteil auf den Metallteilen aufliegt.In a further development, it is preferred if the two Connection electrodes include flat metal parts that are next to each other are arranged in one plane and if the resistance part rests on the metal parts.
Auch diese Maßnahme ist montagetechnisch von Vorteil, die elektrische Verbindung zwischen dem Widerstandsteil und den Anschlußelektroden erfolgt durch die geometrische Anordnung des Widerstandsteiles auf den Anschlußelektroden, wo sie durch das Isolationsteil gehalten werden. Auf das zuvor erwähnte Löten oder eine ähnliche Verbindungstechnik kann damit ggf. sogar verzichtet werden.This measure is also advantageous from an assembly point of view, the electrical one Connection between the resistance part and the connection electrodes takes place through the geometric arrangement of the Resistor part on the connection electrodes, where by the Isolation part are kept. For the previously mentioned soldering or a similar connection technology can possibly even be used to be dispensed with.
Weiter ist es bevorzugt, wenn der Isolationsträger mit Vorsprüngen versehen ist, die das Widerstandsteil zwischen sich einklemmen und auf die Anschlußelektroden drücken.It is further preferred if the insulation carrier has projections is provided, the resistance part between them clamp and press on the connection electrodes.
Auch diese Maßnahme ist montagetechnisch von Vorteil, das Widerstandsteil muß sozusagen nur von außen zwischen die Vorsprünge gedrückt werden, wo es dann durch deren Federwirkung gleichzeitig gehalten und auf die Anschlußelektroden gedrückt wird. Damit ist aber auch ein nachträglicher Austausch des Widerstandsteiles möglich, was unter bestimmten Einsatzbedingungen von Vorteil sein kann.This measure is also advantageous from an assembly point of view, the resistance part so to speak only from the outside between the projections be pressed where it is then by their spring action held simultaneously and pressed on the connection electrodes becomes. But this is also a subsequent replacement of the resistance part possible what under certain operating conditions can be beneficial.
Allgemein ist es noch bevorzugt, wenn die eine Anschlußelektrode einen festen Gegenkontakt und die andere ein Bimetallteil trägt, an dessen freiem Ende ein mit dem festen Gegenkontakt zusammenwirkender beweglicher Gegenkontakt sitzt.In general, it is still preferred if the one connection electrode a fixed mating contact and the other a bimetal part carries, at its free end one with the fixed counter contact interacting movable counter contact sits.
Bei dieser Maßnahme ist von Vorteil, daß ein technisch sehr einfaches Schaltwerk verwendet wird, bei dem der Betriebsstrom über das Bimetallteil selbst fließt, so daß auf ein weiteres Federteil verzichtet werden kann.This measure has the advantage that a technically very simple switchgear is used, in which the operating current flows over the bimetal part itself, so that on another Spring part can be dispensed with.
Weiter ist es noch bevorzugt, wenn das Widerstandsteil ein PTC-Block ist.It is further preferred if the resistance part is a PTC block is.
Hier ist montagetechnisch von Vorteil, daß ein leicht zu handhabender und leicht zu kontaktierender PTC-Block verwendet wird, dessen Außenflächen in bekannter Weise als Anschlüsse ausgebildet sein können.Here it is advantageous from an assembly point of view that it is easy to handle and easy to contact PTC block is, the outer surfaces in a known manner as connections can be trained.
Weitere Vorteile ergeben sich aus der Beschreibung und der beigefügten Zeichnung. Es versteht sich, daß die vorstehend genannten und die nachstehend noch zu erläuternden Merkmale nicht nur in den jeweils angegebenen Kombinationen, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen. Further advantages result from the description and the attached one Drawing. It is understood that the above and the features yet to be explained below only in the specified combinations, but also in other combinations or used alone, without departing from the scope of the present invention.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird in der nachfolgenden Beschreibung näher erläutert. Es zeigen:
- Fig. 1
- eine Draufsicht auf einen schematisch gezeigten temperaturabhängigen Schalter mit gestrichelt angedeuteten Anschlußelektroden;
- Fig. 2
- eine Seitenansicht des Schalters längs der Linie II-II aus Fig. 1 gesehen; und
- Fig. 3
- eine Schnittdarstellung des Schalters längs der Linie III-III aus Fig. 1.
- Fig. 1
- a plan view of a schematically shown temperature-dependent switch with dashed lines indicated connection electrodes;
- Fig. 2
- seen a side view of the switch along the line II-II of Fig. 1; and
- Fig. 3
- a sectional view of the switch along the line III-III of FIG. 1st
In Fig. 1 ist mit 10 ein temperaturabhängiger Schalter bezeichnet,
der einen Isolationsträger 11 umfaßt, an dem zwei in Fig.
1 gestrichelt gezeigte Anschlußelektroden 12, 13 befestigt
sind. Die Anschlußelektrode 13 ist L-förmig und die Anschlußelektrode
12 Z-förmig ausgebildet, so daß sie in der Längsachse
14 des Schalters 10 mit ihren Kontaktenden 12a, 13a aufeinander
zu weisen.In Fig. 1, 10 denotes a temperature-dependent switch,
which comprises an
Insbesondere aus Fig. 2 ist zu erkennen, daß die Anschlußelektroden
12, 13 flächige Metallteile umfassen, die nebeneinander
in einer bei 15 angedeuteten Ebene angeordnet sind. Unter die
Anschlußelektroden 12, 13 sind Anschlußlitzen 16, 17 gelötet,
die dem Außenanschluß des Schalters 10 dienen.It can be seen in particular from FIG. 2 that the
Auf den Anschlußelektroden 12, 13 liegt ein Widerstandsteil 18
auf, das in dem gezeigten Ausführungsbeispiel ein PTC-Block 19
ist. A
Der Isolationsträger 11 ist an seinen Seiten mit in Fig. 1 nach
links weisenden, federnden Vorsprüngen 21, 22 versehen, die
quer zu der Ebene 15 verlaufen und sich aus der Zeichenebene
der Fig. 2 heraus erstrecken. Die Vorsprünge 21, 22 klemmen den
PTC-Block 19 zwischen sich ein und übergreifen diesen mit jeweils
einer Wulst 23 bzw. 24, wodurch der PTC-Block 19 auf die
Anschlußelektroden 12, 13 gedrückt wird. Der PTC-Block 19 kann
in Fig. 1 seitlich von links zwischen die Anschlußelektroden
12, 13 sowie die Vorsprünge 21, 22 eingeschoben werden, so daß
er außen an dem Isolationsträger 11 sitzt, von diesem gehalten
wird und gleichzeitig parallel zwischen die beiden Anschlußelektroden
12, 13 geschaltet ist.The
In der Schnittdarstellung der Fig. 3 ist zu erkennen, daß in
dem Isolationsträger 11 ein Hohlraum 26 vorgesehen ist, in dem
ein temperaturabhängiges Schaltwerk 27 angeordnet ist. In diesen
Hohlraum ragt von links die Anschlußelektrode 12 mit ihrem
Kontaktende 12a sowie von rechts das Kontaktende 13a der Anschlußelektrode
13 hinein, wobei auch im Bereich des Hohlraumes
26 die beiden Anschlußelektroden 12, 13 auf einer Ebene liegen.In the sectional view of Fig. 3 it can be seen that in
a
Die Anschlußelektrode 12 trägt an ihrem Kontaktende 12a einen
festen Gegenkontakt 28, der mit einem beweglichen Gegenkontakt
29 zusammenarbeitet, der an einem freien Ende einer Bimetall-Feder
31 angeordnet ist. An ihrem anderen Ende 32 ist die Bimetall-Feder
31 mit einem abgekröpften Teil 33 der Anschlußelektrode
13 verbunden.The
In der in Fig. 3 gezeigten Stellung befindet sich die Bimetall-Feder
31 in ihrer Tieftemperaturstellung, in der sie den beweglichen
Gegenkontakt 29 gegen den festen Gegenkontakt 28 drückt,
so daß eine elektrisch leitende Verbindung zwischen den beiden
Anschlußelektroden 12, 13 hergestellt wird. Mit seinen Anschlußelektroden
12, 13 wird der Schalter 10 in Reihe mit einem
zu schützenden elektrischen Gerät in einen elektrischen Stromkreis
geschaltet, wobei der Betriebsstrom des Gerätes über die
Anschlußelektroden 12, 13 sowie die Bimetall-Feder 31 geführt
wird. Erhöht sich jetzt die Temperatur des Schalters 10 und damit
der Bimetall-Feder 31 über die Schalttemperatur hinaus, so
hebt die Bimetall-Feder 31 den beweglichen Gegenkontakt 29 von
dem festen Gegenkontakt 28 ab, wodurch der Stromkreis unterbrochen
wird, so daß das geschützte Gerät abgeschaltet wird.The bimetal spring is in the position shown in FIG. 3
31 in its low temperature position, in which it moves
Ein Reststrom fließt jedoch noch durch den PTC-Block 19, der
elektrisch parallel zu dem Schaltwerk 27 angeordnet ist. Der
durch den PTC-Block 19 fließende Reststrom erhöht die Temperatur
der Anschlußelektroden 12, 13, so daß durch Wärmeleitung
Wärme in das Innere des Schalters 10 gelangt, wodurch die Bimetall-Feder
31 auf oberhalb der Schalttemperatur gehalten wird,
so daß der Schalter 10 sich nicht selbsttätig wieder schließt.
Erst nachdem die Stromzufuhr unterbrochen wurde, kühlt sich der
PTC-Block 19 und damit auch der Rest des Schalters 10 soweit
ab, daß das Schaltwerk 27 wieder schließen kann.However, a residual current still flows through the
Der PTC-Block 19 kann dabei von seinem Widerstandswert her unterschiedlich
ausgelegt sein, wodurch unterschiedliche Schalttemperaturen
erhalten werden können. Dazu ist es lediglich erforderlich,
unterschiedliche PTC-Blöcke 19 zwischen die federnden
Vorsprünge 21, 22 sowie die Anschlußelektroden 12, 13 zu
schieben.The
Claims (5)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19816807A DE19816807C2 (en) | 1998-04-16 | 1998-04-16 | Temperature-dependent switch |
| DE19816807 | 1998-04-16 |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| EP0951040A2 true EP0951040A2 (en) | 1999-10-20 |
| EP0951040A3 EP0951040A3 (en) | 2000-07-26 |
| EP0951040B1 EP0951040B1 (en) | 2008-07-30 |
| EP0951040B2 EP0951040B2 (en) | 2017-03-15 |
Family
ID=7864678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99100553.9A Expired - Lifetime EP0951040B2 (en) | 1998-04-16 | 1999-01-13 | Thermally actuated switch |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6133817A (en) |
| EP (1) | EP0951040B2 (en) |
| AT (1) | ATE403229T1 (en) |
| AU (1) | AU745179B2 (en) |
| DE (2) | DE19816807C2 (en) |
| ES (1) | ES2311299T3 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010139781A1 (en) * | 2009-06-05 | 2010-12-09 | Hofsaess Marcel P | Bimetallic part and temperature-dependent switch equipped therewith |
| US11476066B2 (en) | 2019-09-20 | 2022-10-18 | Marcel P. HOFSAESS | Temperature-dependent switch |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19847209C2 (en) * | 1998-10-13 | 2002-04-25 | Marcel Hofsaes | Switch with an insulating carrier |
| DE19909059C2 (en) * | 1999-03-02 | 2003-10-16 | Marcel Hofsaes | Switch with welding protection |
| US6483418B1 (en) * | 2000-08-18 | 2002-11-19 | Texas Instruments Incorporated | Creep acting miniature thermostatic electrical switch and thermostatic member used therewith |
| JP4471479B2 (en) * | 2000-10-13 | 2010-06-02 | ウチヤ・サーモスタット株式会社 | Thermal protector |
| US6756536B2 (en) | 2002-03-28 | 2004-06-29 | Bae Systems Information And Electronic Systems Integration Inc. | Thermoelectric microactuator |
| JP5000540B2 (en) * | 2008-01-31 | 2012-08-15 | 新光電気工業株式会社 | Wiring board with switching function |
| DE102009025221A1 (en) | 2009-06-05 | 2010-12-16 | Hofsaess, Marcel P. | Bimetallic part for use as an active switch element in a temperature-dependent switch, comprises an inner area and an outer area surrounding the inner area, where the inner and outer areas are integrally designed in some sections |
| DE102009030353B3 (en) * | 2009-06-22 | 2010-12-02 | Hofsaess, Marcel P. | Cap for a temperature-dependent switch and method for producing a temperature-dependent switch |
| DE102009039948A1 (en) | 2009-08-27 | 2011-03-03 | Hofsaess, Marcel P. | Temperature-dependent switch |
| DE102013101393B4 (en) | 2013-02-13 | 2014-10-09 | Thermik Gerätebau GmbH | Temperature-dependent switch |
| DE102013108508A1 (en) | 2013-08-07 | 2015-02-12 | Thermik Gerätebau GmbH | Temperature-dependent switch |
| DE102013022331B4 (en) | 2013-08-07 | 2020-10-29 | Thermik Gerätebau GmbH | Temperature dependent switch |
| DE102013108504C5 (en) | 2013-08-07 | 2018-11-15 | Thermik Gerätebau GmbH | Temperature-dependent switch |
| DE102014116888B4 (en) | 2014-11-18 | 2018-05-17 | Thermik Gerätebau GmbH | Temperature-dependent switch |
| DE102018130078B4 (en) | 2018-11-28 | 2020-10-15 | Marcel P. HOFSAESS | Temperature dependent switch |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0114071A2 (en) * | 1983-01-15 | 1984-07-25 | Fritz Eichenauer GmbH & Co. KG | Temperature control device |
| EP0272696A2 (en) * | 1986-12-24 | 1988-06-29 | INTER CONTROL Hermann Köhler Elektrik GmbH u. Co. KG | Bimetal switch |
| EP0887826A2 (en) * | 1997-06-26 | 1998-12-30 | Marcel Hofsäss | Thermally actuated switch with contact bridge |
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| GB134274A (en) * | 1918-10-24 | 1919-10-24 | Frank William Gunton | Improvements in Light Motor Cars, particularly those of the Cycle Car Type. |
| US2753421A (en) * | 1953-03-11 | 1956-07-03 | Stevens Mfg Co Inc | Thermostatic switches |
| US3265839A (en) * | 1963-08-05 | 1966-08-09 | Fasco Industries | Thermally-operable circuit breaker |
| US3308255A (en) * | 1964-06-08 | 1967-03-07 | Amf Electrica S P A | Ambient thermal protector with abutment contact reengagement means mounted on its case |
| NL7004367A (en) * | 1970-03-26 | 1971-09-28 | ||
| DE2831198C2 (en) † | 1978-07-15 | 1982-11-04 | Limitor AG, 8022 Zürich | Bimetal temperature switch |
| DE7920923U1 (en) † | 1979-07-21 | 1979-10-25 | Limitor Ag, Zuerich (Schweiz) | Thermal time switch |
| US4399423A (en) * | 1982-03-29 | 1983-08-16 | Texas Instruments Incorporated | Miniature electric circuit protector |
| DE3320730A1 (en) * | 1983-01-15 | 1984-07-19 | Fritz Eichenauer GmbH & Co KG, 6744 Kandel | Temperature monitor |
| DE3373379D1 (en) * | 1983-06-20 | 1987-10-08 | Texas Instruments Holland | Thermostat |
| US4620175A (en) * | 1985-10-11 | 1986-10-28 | North American Philips Corporation | Simple thermostat for dip mounting |
| JP2585148B2 (en) * | 1991-04-05 | 1997-02-26 | ウチヤ・サーモスタット株式会社 | Thermostat with built-in film heating element |
| GB9109316D0 (en) * | 1991-04-30 | 1991-06-19 | Otter Controls Ltd | Improvements relating to electric switches |
| DE4142716C2 (en) * | 1991-12-21 | 1997-01-16 | Microtherm Gmbh | Thermal switch |
| DE4206157A1 (en) * | 1992-02-28 | 1993-09-16 | Hofsass P | THERMAL SWITCH |
| DE9214940U1 (en) * | 1992-11-03 | 1992-12-17 | Thermik Geraetebau Gmbh, 7530 Pforzheim | Temperature monitor |
| US5268664A (en) * | 1993-01-25 | 1993-12-07 | Portage Electric Products, Inc. | Low profile thermostat |
| DE4428226C1 (en) * | 1994-08-10 | 1995-10-12 | Thermik Geraetebau Gmbh | Temp. monitoring switch e.g. for electric motor or transformer |
| DE19509656C2 (en) † | 1995-03-17 | 1997-01-16 | Radbruch Jens Dipl Ing | Thermal protection switch |
| DE19752581C2 (en) * | 1997-11-27 | 1999-12-23 | Marcel Hofsaes | Switch with a temperature-dependent switching mechanism |
-
1998
- 1998-04-16 DE DE19816807A patent/DE19816807C2/en not_active Expired - Fee Related
-
1999
- 1999-01-13 EP EP99100553.9A patent/EP0951040B2/en not_active Expired - Lifetime
- 1999-01-13 AT AT99100553T patent/ATE403229T1/en active
- 1999-01-13 ES ES99100553T patent/ES2311299T3/en not_active Expired - Lifetime
- 1999-01-13 DE DE59914816T patent/DE59914816D1/en not_active Expired - Lifetime
- 1999-04-12 US US09/289,821 patent/US6133817A/en not_active Expired - Lifetime
- 1999-04-15 AU AU23770/99A patent/AU745179B2/en not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0114071A2 (en) * | 1983-01-15 | 1984-07-25 | Fritz Eichenauer GmbH & Co. KG | Temperature control device |
| EP0272696A2 (en) * | 1986-12-24 | 1988-06-29 | INTER CONTROL Hermann Köhler Elektrik GmbH u. Co. KG | Bimetal switch |
| EP0887826A2 (en) * | 1997-06-26 | 1998-12-30 | Marcel Hofsäss | Thermally actuated switch with contact bridge |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010139781A1 (en) * | 2009-06-05 | 2010-12-09 | Hofsaess Marcel P | Bimetallic part and temperature-dependent switch equipped therewith |
| US9355801B2 (en) | 2009-06-05 | 2016-05-31 | Marcel P. HOFSAESS | Bimetal part and temperature-dependent switch equipped therewith |
| US11476066B2 (en) | 2019-09-20 | 2022-10-18 | Marcel P. HOFSAESS | Temperature-dependent switch |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0951040A3 (en) | 2000-07-26 |
| DE59914816D1 (en) | 2008-09-11 |
| ES2311299T3 (en) | 2009-02-01 |
| AU2377099A (en) | 1999-10-28 |
| AU745179B2 (en) | 2002-03-14 |
| ATE403229T1 (en) | 2008-08-15 |
| EP0951040B1 (en) | 2008-07-30 |
| DE19816807A1 (en) | 1999-10-28 |
| DE19816807C2 (en) | 2000-06-08 |
| EP0951040B2 (en) | 2017-03-15 |
| US6133817A (en) | 2000-10-17 |
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