EP0740323B1 - Thermostat avec un dispositif interrupteur à bimétal commutant en cas de surchauffe - Google Patents

Thermostat avec un dispositif interrupteur à bimétal commutant en cas de surchauffe Download PDF

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Publication number
EP0740323B1
EP0740323B1 EP96100742A EP96100742A EP0740323B1 EP 0740323 B1 EP0740323 B1 EP 0740323B1 EP 96100742 A EP96100742 A EP 96100742A EP 96100742 A EP96100742 A EP 96100742A EP 0740323 B1 EP0740323 B1 EP 0740323B1
Authority
EP
European Patent Office
Prior art keywords
film
resistor
temperature controller
resistance
temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96100742A
Other languages
German (de)
English (en)
Other versions
EP0740323A2 (fr
EP0740323A3 (fr
Inventor
Marcel Hofsäss
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.)
HOFSAESS, MARCEL
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0740323A2 publication Critical patent/EP0740323A2/fr
Publication of EP0740323A3 publication Critical patent/EP0740323A3/fr
Application granted granted Critical
Publication of EP0740323B1 publication Critical patent/EP0740323B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • 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
    • H01H37/5427—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting encapsulated in sealed miniaturised housing
    • 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
    • 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

Definitions

  • the present invention relates to a temperature monitor a bimetal rear derailleur that switches at overtemperature and a heating resistor connected to it, which in the sense of a Self-holding function acts and is formed on a film, which is intended for electrical insulation.
  • Such a temperature monitor is for example from the EP-A-0 507 425 known.
  • the rear derailleur is below Intermediate layer of an insulating film in a metal housing, wherein the insulating film on the one hand a mating contact fixed to the housing insulated from the metal housing and on the other hand one Heating resistor carries.
  • a bimetal switchgear is placed with the interposition of the insulating film in the assembly of the known temperature monitor in a one-piece Metal housing, whereupon the section in is filled with a resin near the connections.
  • the known temperature monitor consequently has a complicated one Build up so that final assembly is difficult.
  • a temperature monitor known from EP-A-0 284 916 comprises one closed by a cover part made of thermistor material Housing part in which the rear derailleur is arranged.
  • the bimetal rear derailleur comprises a bimetallic snap disk in a known manner as well as a spring washer on which a movable contact part is held. Below the response temperature of the bimetallic snap disc is the movable contact part by the Spring washer pressed against a fixed contact part on the cover, which extends like a rivet through the lid and merges into a head outside.
  • the housing part is made of electrical made of conductive material so that the rear derailleur at low Temperatures a conductive connection between the housing part and the head of the fixed contact part.
  • the lid is in conductive connection with both the fixed contact part as well as with the housing part so that it is electrically parallel is connected to the rear derailleur.
  • the lid comprises a ceramic support part on which a Coal resistor is arranged as the heating resistor for the Self-holding function ensures.
  • the cover is made of thermistor material, points he does not have the required pressure stability, which in the rough Daily use of the well-known temperature monitor frequently is required.
  • temperature monitors are namely used for temperature monitoring of motors, heating coils etc. often having strong mechanical loads as a result of the operation of the consumers to be protected connected vibrations are exposed. It can also be strong Press on the lid of the temperature monitor.
  • the parallel resistor is a carbon resistor, it can the lid itself is made of a mechanically more stable material exist, but the temperature monitor has other disadvantages on. In particular with a carbon resistor it can occur that the bimetal rear derailleur as a result of too high Temperature development of the coal resistance irreparably destroyed becomes. This is parallel with a PTC resistor switched heating resistor not possible because the PTC resistor due to its temperature-dependent resistance value, which increases with increasing temperature, in its temperature output is adjustable, or regulates itself, so that irreversible damage to the rear derailleur as a result of Overheating in self-holding mode is avoided.
  • DE-OS-43 36 564 is another self-holding Known temperature monitor with which a second heating resistor connected in series for overcurrent sensitivity the well-known temperature monitor ensures.
  • This known temperature monitor includes one with conductive ceramic insulating plate provided with insulating coatings, on which an encapsulated bimetal rear derailleur is arranged, next to it sits a thermistor module that is electrically parallel is switched to the rear derailleur for the latch function to care. There is also a thick film resistor on the ceramic carrier plate arranged, which leads under the rear derailleur and is connected in series with it.
  • the well-known temperature monitor is in line with one protective consumer switched so that it from the operating current flow through the consumer. Stands at the same time this temperature monitor in a known manner in thermal Connection with the consumer to be monitored. Increases the operating current of the consumer due to a defect in inadmissible, the thick-film resistor connected in series heats up the switchgear so far that it opens, so that the PTC resistor connected in parallel the current takes over. Because of the high resistance of the PTC resistor the operating current of the consumer now rises a harmless measure back, but sufficient, over the Ohmic power loss in the PTC resistor one Maintain temperature that opens the rear derailleur. Of course, the well-known temperature monitor also opens then when the consumer is too high a temperature, whereupon the bimetal rear derailleur also opens and the PTC resistor takes over the current and a temperature that keeps the temperature monitor open.
  • This temperature monitor is a relatively bulky and large construction, which in particular is due to the ceramic base plate.
  • DE-OS-41 42 716 is a self-holding Miniature temperature monitor known in which a heating resistor connected in parallel and one in series Heating resistor for current monitoring are available.
  • the series resistor is as an etched or stamped part or as with a Resistance printed film in the immediate vicinity and in thermal and electrical contact with the spring washer of the Bimetallic rear derailleur arranged so that it below in Bottom part of the housing comes to rest.
  • this object is achieved in the aforementioned Temperature monitor solved in that he a the rear derailleur receiving housing lower part made of conductive material, preferably made of metal, as well as a closing part of the housing Cover part made of conductive material, preferably made of metal, has, and that the film at the same time for a required Insulation between the lower housing part and the cover part ensures.
  • the object on which the invention is based is achieved in this way completely solved. Because the heating resistor on a film trained, he can with different overall dimensions Place easily in a housing that houses the rear derailleur be accommodated.
  • the insulating film required anyway between the lower part of the housing and the cover part as a film can be provided with a heating resistor formed thereon.
  • Such temperature monitors with a metal housing are, for example known from DE-AS-21 21 802. Contacting the known Temperature monitor takes place on the one hand via the cover part and on the other hand over the lower part of the housing, so that an insulating film between these two housing parts is required.
  • the measure mentioned here can therefore be the known temperature monitor in a surprisingly simple way with a self-holding function be equipped, the mechanical very reliable construction can be preserved, the high Withstands pressure.
  • Another advantage is that the construction and the assembly and the devices provided for it, such as. Handling devices etc. not changed must be, rather in the usual assembly process instead of the previously used insulating film, the film with the heating resistor provided according to the invention.
  • the Provide film on one or both sides with resistance material preferably coated or printed with resistance tracks is.
  • the advantage here is that the resistance value depending on the desired circumstances can be adjusted by either one-sided or one-sided with resistance material provided film is used. Due to the geometry of the resistance tracks the resistance value can be adjusted further.
  • the film is a resistance material made of thermistor material.
  • the film at least at one point is plated through, so that the resistance material on both Sides of the film is electrically connected to each other.
  • the advantage here is that simple contacting is possible Cover part and lower housing part results.
  • the slide provides two areas of resistance material connected in series, so to speak and / or conductor material, which by simple Insert into the lower part of the housing and come into contact with it.
  • the lid part is then placed on the film, whereby the second contact is made.
  • Then in the usual way flanged the edges of the lower housing part, so that the Cover part is held firmly on the lower housing part.
  • the Heating resistor is now parallel to the bimetal switchgear switched, as mentioned at the beginning, on the one hand via the Spring washer with the lower part of the housing and on the other hand the movable contact part is connected to the cover, when the rear derailleur is closed.
  • the film is a heating film, which is an insulating plastic film with as a heating resistor serving conductor tracks.
  • the heating foil is just like that previously mentioned film used as an insulating film.
  • the conductor tracks are arranged so that they both with the cover part as well as get in contact with the lower housing part if the temperature monitor is assembled in the usual way.
  • the film is a thermistor film, is preferably a PTC film.
  • the advantage here is that the foil as a whole as a PTC resistor can be formed, whereby the contact designed very simple for the cover part and lower part of the housing.
  • the film is partially is provided with resistance material.
  • the advantage here is that by choosing the size and possibly Resistance material geometry the resistance value of the Heating resistor can be set precisely.
  • the film is coated on one side with resistance material is provided and on the other side of the Has contacting serving conductor tracks.
  • the film is optionally with an intermediate layer of additional insulating material between the lower part of the housing and the cover part is clamped.
  • the advantage here is that the new temperature monitor is not can be easily assembled, but also in a simple manner on the one hand a short circuit avoided and on the other hand a Contacting the heating resistor is effected.
  • the temperature monitor 10 comprises a pot-shaped lower housing part 11 and a Lower housing part 11 closing cover part 12, which on a circumferential shoulder 13 of the housing part 11 rests.
  • the Temperature monitor 10 is over a flange 14 of the lower housing part 11 closed, the cover part 12 on the circumferential shoulder 13 presses.
  • Bimetal rear derailleur 15 In the interior of the lower housing part 11 there is a Bimetal rear derailleur 15, which is of conventional construction. It includes a spring washer 16 which is a movable contact member 17 carries, over which a bimetallic snap disk 18 is placed is. The spring washer 16 is supported on a bottom of the cup-shaped Lower housing part 11 and thus clamps the movable Contact part 17 against a fixed contact part 20, the inside is provided on the cover part 12.
  • this temperature monitor 10 housing lower part 11 and Cover part 12 made of conductive material, preferably made of metal manufactured so that an insulating film 22 is provided, which Cover part 12 isolated from the lower housing part 11.
  • the Contacting of the temperature monitor 10 takes place on the one hand the cover part 12 and on the other hand via the lower housing part 11, as is known per se.
  • the switching mechanism 15 has one Temperature below its response temperature so that it is in the closed state in which it is for one conductive connection between the fixed contact part 20 and thus the cover part 12 and the bottom 19 and thus the lower housing part 11 cares.
  • the temperature of the switching mechanism 15 is now increased, it snaps the bimetallic snap disk 18 suddenly from that shown convex shape to a concave shape and is based on the Bottom of the cover part 12 from such that it is the movable Contact part against the force of the spring washer 18 from the fixed Contact part 20 lifts off.
  • the insulating film 22 can be designed so that they lose heat too quickly prevented from inside the temperature monitor 10. So can it can be provided, for example, that the lower housing part 11 and cover part 12 made of plastic or a similar not conductive material, so that the insulating film 22 per se is not required for the function.
  • the fixed contact part 20, for example kind of a rivet contacted through to the outside while on the other hand an electrical connection to the outside via the base 19 will be produced. For reasons of clarity, this is Alternative not shown in Fig. 1.
  • the insulating film 22 is not the one here electrical insulation must be provided because of them yet the advantage of being further thermal insulation the inside of the temperature monitor 10 causes, so that in temperature prevailing inside the temperature monitor 10 does not degrade too quickly.
  • the heating resistor 23 can in in this case be such that it is alone for a long time the required temperature inside the temperature monitor 10 can not hold, but contributes to the fact that this The temperature only decreases so slowly that the desired one Switch-on delay is reached.
  • you can this additional function of thermal insulation from the insulating film 22 can also be exercised when cover part 12 and Lower housing part 11 are made of metal.
  • the Insulating film 22 has two functions, on the one hand it serves electrical and / or thermal insulation and on the other the heating resistor 23 is formed on it, which has the self-holding function effected or supported.
  • a particular advantage of the new temperature monitor 10 is in that known constructions that already have an insulating film for the reasons mentioned above for electrical insulation use, can be fully retained, the insulating film 22 only has to have a heating resistor 23 be provided. But that means that in the usual Manufacturing process only the previously used pure insulating film against an insulating film according to the invention with a heating resistor must be replaced, so that no set-up costs for the production devices occur.
  • the new temperature monitor 10 has all the known and desired mechanical ones and electrical properties that are already in the market are introduced and now get extremely simple on this In addition, a self-holding function.
  • FIG. 2 22 An insulating film is enlarged and not to scale in FIG. 2 22 shown in cross section, as in the temperature monitor 10 from Fig. 1 can be used.
  • the insulating film 22 has a film 24 as a carrier, for example Teflon, Kapton, Nomex or similar. On both sides the film 24 is provided with resistance material 25, e.g. a PTC thermistor material, a carbon film resistor or the like can be. There is an opening in the film 24 in a known manner 26 is provided, which is placed over the movable contact part 17 becomes, as can be seen in Fig. 1.
  • the insulating film 22 arrives in the temperature monitor during installation 10 over its upper resistance material 27 at its edge 28 in contact with the lid member 12 while over its lower one Resistance material 29 on its edge 31 on shoulder 13 rests and is in electrical contact with the lower part of the housing 11 is located.
  • vias 32 are provided the upper resistance material 27 with the lower resistance material 29 connect. This way the one from the top is and the lower resistance material 27, 29 formed heating resistor 23 on the one hand with the cover part 12 and on the other hand connected to the lower housing part 11 so that it is parallel to the bimetallic switching mechanism 15 is switched. That way the heating resistor 23 for the already discussed in detail Ensure the self-holding function of the new temperature monitor 10.
  • the resistance value can also be set at edges 28, 31, the more this through-contacting at the edges 28, 31 lies, the lower the series connection of the two Resistance ranges, provided the other geometrical and electrical properties are not changed.
  • the vias 32 also be dispensed with, provided that between the upper resistance material 27 and lower resistance material 29 in axial
  • the measured resistance value is large enough to the direction to achieve the desired heating function when the bimetal switchgear is open.
  • the heating resistor 23 is bridged by the latter anyway, so that its resistance value the function of the temperature monitor 10 not affected.
  • the film 24 itself a PTC film 24 ', so that on the upper and lower resistance material 27, 29 and on the Vias 32 can be dispensed with entirely.
  • 3 is another embodiment of the new one Insulating film 22 shown as in the temperature monitor 10th 1 can be used.
  • the film 24 here has 33 conductor tracks 34 on its upper side on that through the vias 32 with lower resistance material 29 are connected on their underside 35.
  • the Conductor tracks 34 extend essentially radially on the Top 33 and open into a preferably circular Conductor 36 in the area of the edge 28.
  • the heating resistor 23 is essentially the lower Resistance material 29 formed, the conductor tracks 34, 36 and the vias 32 are used only for electrical Connection between the lower resistance material 29 and the Cover part 12.
  • the edge 31 is the lower resistance material 39 on shoulder 13 again, so that here too the heating resistor 23 connected in parallel to the bimetallic switching mechanism 15 is.
  • the Conductor tracks 32, 34, 36 also tracks made of resistance material be on both the top 33 and the bottom 35 can be arranged.
  • the heating resistor 23 only through the resistance values of the resistance tracks 32, 34, 36 formed.
  • FIG. 4 is a top view of the insulating film 22 from FIG. 3 in which it can be seen that the resistance tracks 34, 36 cover the film 24 only in regions, the dimension of the Coverage, so the selected geometry the resistance value of the Heating resistor 23 determined.
  • the film 24 can generally be made of a thermistor material be produced, the non-specific a positive temperature coefficient having. However, it is also possible as a film 22, 24 directly a PTC film with precisely set temperature-dependent To use resistance behavior.
  • the film 24 is made of conductive material, and the Conductor or resistance tracks 32, 34, 36 for the resistance value of the heating resistor 23, then it may be necessary the free area 38 between the conductor tracks 34 with a Intermediate layer of additional insulating material 39 to provide on both sides of the insulating film 24 for partial insulation the lower housing part 11 and cover part 12 provides and at Switched derailleur 15 opposite the bimetallic disc 18 the heating resistor 23 may be insulated.

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Thermally Actuated Switches (AREA)
  • Thermistors And Varistors (AREA)
  • Control Of Temperature (AREA)

Claims (10)

  1. Contrôleur de température comportant un mécanisme de coupure à bilame (15) qui coupe en cas de surtempérature, et une résistance de chauffage (23) qui est mise en circuit avec celui-ci et qui agit dans le sens d'une fonction d'auto-maintien et est formée sur une feuille (22, 24), laquelle est prévue pour l'isolation électrique, caractérisé en ce qu'il est prévu une partie inférieure de boítier (11) en matière conductrice, recevant le mécanisme de coupure (15), ainsi qu'une partie formant couvercle (12) en matière conductrice, fermant la partie inférieure de boítier (11), et en ce que la feuille (22, 24) assure une isolation nécessaire entre la partie inférieure de boítier (11) et la partie formant couvercle (12).
  2. Contrôleur de température selon la revendication 1, caractérisé en ce que la partie inférieure de boítier (1) et/ou la partie formant couvercle (12) sont en métal.
  3. Contrôleur de température selon la revendication 1 ou 2, caractérisé en ce que la feuille (22, 24) est pourvue, sur l'une ou les deux faces, d'une matière de résistance (25, 27, 29 ; 34, 36), de préférence revêtue ou imprimée avec des pistes de résistance (34, 36).
  4. Contrôleur de température selon l'une des revendications 1 à 3, caractérisé en ce que la feuille (22, 24) comporte une matière de résistance (25) en matière conductrice froide.
  5. Contrôleur de température selon l'une des revendications 1 à 4, caractérisé en ce que la feuille (22, 24) est à trous métallisés, au moins en une emplacement (32), ce qui fait que les matières de résistance (27, 29 ; 34, 36) sur les deux faces (33, 35) de la feuille (22, 24) sont reliées électriquement entre elles.
  6. Contrôleur de température selon l'une des revendications 1 à 5, caractérisé en ce que la feuille (22, 24) est une feuille chauffante (37) qui comporte une feuille plastique isolante (24) avec des pistes conductrices (34, 36) servant de résistance de chauffage (23).
  7. Contrôleur de température selon l'une des revendications 1 à 6, caractérisé en ce que la feuille (22, 24) est une feuille à conducteur froid, de préférence une feuille PTC.
  8. Contrôleur de température selon l'une des revendications 1 à 7, caractérisé en ce que la feuille (22, 24) est pourvue par endroits d'une matière de résistance (25).
  9. Contrôleur de température selon l'une des revendications 1 à 8, caractérisé en ce que la feuille (22, 24) est pourvue sur une face d'une matière de résistance (25), et sur l'autre face de pistes conductrices (34, 36) qui servent à établir le contact.
  10. Contrôleur de température selon l'une des revendications 1 à 9, caractérisé en ce que la feuille (22, 24) est serrée entre la partie inférieure de boítier (11) et la partie formant couvercle (12), éventuellement par interposition d'une autre matière isolante.
EP96100742A 1995-04-26 1996-01-19 Thermostat avec un dispositif interrupteur à bimétal commutant en cas de surchauffe Expired - Lifetime EP0740323B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19514853A DE19514853C2 (de) 1995-04-26 1995-04-26 Temperaturwächter mit einem bei Übertemperatur schaltenden Bimetall-Schaltwerk
DE19514853 1995-04-26

Publications (3)

Publication Number Publication Date
EP0740323A2 EP0740323A2 (fr) 1996-10-30
EP0740323A3 EP0740323A3 (fr) 1998-04-22
EP0740323B1 true EP0740323B1 (fr) 2002-04-03

Family

ID=7760123

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96100742A Expired - Lifetime EP0740323B1 (fr) 1995-04-26 1996-01-19 Thermostat avec un dispositif interrupteur à bimétal commutant en cas de surchauffe

Country Status (7)

Country Link
US (1) US5721525A (fr)
EP (1) EP0740323B1 (fr)
AT (1) ATE215732T1 (fr)
DE (2) DE19514853C2 (fr)
DK (1) DK0740323T3 (fr)
ES (1) ES2174984T3 (fr)
PT (1) PT740323E (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19639942C2 (de) * 1996-09-27 1999-07-01 Siemens Matsushita Components Thermische Sicherung
DE19752581C2 (de) * 1997-11-27 1999-12-23 Marcel Hofsaes Schalter mit einem temperaturabhängigen Schaltwerk
DE19827113C2 (de) * 1998-06-18 2001-11-29 Marcel Hofsaes Temperaturabhängiger Schalter mit Stromübertragungsglied
US6229121B1 (en) * 1999-07-23 2001-05-08 Industrial Technology Research Institute Integrated thermal buckling micro switch with electric heater and sensor
BRPI0309817A2 (pt) * 2002-05-07 2016-08-09 Ubukata Ind Co Ltd protetor térmico.
US20080055038A1 (en) * 2006-08-31 2008-03-06 Honeywell International Inc. Thermal switch strike pin
CN102007561B (zh) * 2008-04-18 2014-07-02 泰科电子日本合同会社 电路保护装置
CA2725640A1 (fr) * 2008-05-30 2009-12-03 Ubukata Industries Co., Ltd. Interrupteur a actionnement thermique
DE102013102089B4 (de) * 2013-03-04 2015-02-12 Marcel P. HOFSAESS Temperaturabhängiger Schalter mit Isolierscheibe
DE102013108508A1 (de) 2013-08-07 2015-02-12 Thermik Gerätebau GmbH Temperaturabhängiger Schalter
DE102019125453B4 (de) * 2019-09-20 2025-04-30 Marcel P. HOFSAESS Temperaturabhängiger Schalter
DE102022134379B3 (de) 2022-12-21 2024-02-08 Marcel P. HOFSAESS Temperaturabhängiger Schalter
DE102022134380B3 (de) * 2022-12-21 2024-02-08 Marcel P. HOFSAESS Temperaturabhängige Schaltwerke und temperaturabhängiger Schalter mit einem solchen Schaltwerk
DE102023104839B3 (de) 2023-02-28 2024-05-16 Marcel P. HOFSAESS Temperaturabhängiger Schalter

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2121802C3 (de) * 1971-05-03 1974-10-24 Thermik-Geraetebau Gmbh + Co, 7530 Pforzheim Temperaturwächter
DE3644514A1 (de) * 1986-12-24 1988-07-07 Inter Control Koehler Hermann Bimetallschalter
DE3710672C2 (de) * 1987-03-31 1997-05-15 Hofsaes Geb Zeitz Ulrika Temperaturwächter mit einem Gehäuse
US4878038A (en) * 1987-12-07 1989-10-31 Tsai James T Circuit protection device
JP2585148B2 (ja) * 1991-04-05 1997-02-26 ウチヤ・サーモスタット株式会社 フィルム状発熱体内蔵型サーモスタット
DE4142716C2 (de) * 1991-12-21 1997-01-16 Microtherm Gmbh Thermoschalter
DE4206157A1 (de) * 1992-02-28 1993-09-16 Hofsass P Thermoschalter
DE9214940U1 (de) * 1992-11-03 1992-12-17 Thermik Geraetebau Gmbh, 7530 Pforzheim Temperaturwächter
DE4335639A1 (de) * 1993-10-13 1995-04-20 Eaw Relaistechnik Gmbh Thermoschalter mit Bimetallschnappscheibe und elektrischer/thermischer Verhinderung des automatischen Rückschnappens der Bimetallschnappscheibe
DE9320737U1 (de) * 1993-10-13 1995-01-05 EAW Relaistechnik GmbH, 10317 Berlin Thermoschalter mit Bimetallschnappscheibe und elektrischer/thermischer Verhinderung des automatischen Rückschnappens der Bimetallschnappscheibe

Also Published As

Publication number Publication date
DE19514853A1 (de) 1996-11-07
EP0740323A2 (fr) 1996-10-30
PT740323E (pt) 2002-07-31
DE59608984D1 (de) 2002-05-08
EP0740323A3 (fr) 1998-04-22
ATE215732T1 (de) 2002-04-15
DK0740323T3 (da) 2002-06-17
ES2174984T3 (es) 2002-11-16
US5721525A (en) 1998-02-24
DE19514853C2 (de) 1997-02-27

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