EP0789376B1 - Interrupteur avec un dispositif de commutation dépendant de la température - Google Patents

Interrupteur avec un dispositif de commutation dépendant de la température Download PDF

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Publication number
EP0789376B1
EP0789376B1 EP96116940A EP96116940A EP0789376B1 EP 0789376 B1 EP0789376 B1 EP 0789376B1 EP 96116940 A EP96116940 A EP 96116940A EP 96116940 A EP96116940 A EP 96116940A EP 0789376 B1 EP0789376 B1 EP 0789376B1
Authority
EP
European Patent Office
Prior art keywords
switch
cover part
resistor
switching mechanism
contact region
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
EP96116940A
Other languages
German (de)
English (en)
Other versions
EP0789376A2 (fr
EP0789376A3 (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 EP0789376A2 publication Critical patent/EP0789376A2/fr
Publication of EP0789376A3 publication Critical patent/EP0789376A3/fr
Application granted granted Critical
Publication of EP0789376B1 publication Critical patent/EP0789376B1/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
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/16—Electrothermal mechanisms with bimetal element
    • H01H71/164—Heating elements
    • 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 an opening switch and / or closing a circuit with a temperature-dependent Rear derailleur and a derailleur receiving Housing, which is an electrically conductive lower part and this has a closing, electrically conductive cover part, the is electrically insulated from the lower part, the Switchgear an electrical depending on its temperature Establishes connection between the cover part and the lower part and the circuit on the one hand with the cover part and on the other hand is connectable to the lower part.
  • a metal housing is provided the lower part by the interposition of an insulating film is insulated from the cover part.
  • the cover part is through a flanged edge of the lower part captively attached to this.
  • a temperature-dependent bimetal switch mechanism provided which comprises a spring washer which a movable contact part carries. There is one over the contact part Bimetallic snap disc put over.
  • the spring washer presses the movable contact part against you provided on the inside of the cover part and is supported on the other hand, with its edge on the inside of the lower part. Since the Spring washer is made of electrically conductive material, becomes an electrical connection between the cover part and the lower part.
  • the temperature of the switch is now increased, it snaps the bimetallic snap disc is now supported with its edge on the inside of the cover part and presses the movable contact part against the force of the spring washer away from the cover part.
  • the insulating film covers a large part of the inside of the cover part covered, the edge is now supported on the cover part of the Bimetallic disc insulated from the cover part, so that after Lift off the contact part from the projection which is electrical conductive connection between the cover part and the lower part is interrupted.
  • Such switches are in series with an electrical Consumer switched into a circuit, being good thermal connection between the electrical switch and the consumer to be protected is taken care of. Because of the above described functional principle of the bimetal rear derailleur the consumer is powered as long as his temperature is so low that the response temperature of the bimetallic snap disc is not reached. The temperature of the Consumer due to a malfunction above a permissible Value, the circuit is interrupted and thus the Consumer switched off to protect against overtemperature.
  • the well-known switch with its encapsulated metal housing is very robust and insensitive to mechanical influences, so that he can satisfy the demands made on him Fulfills.
  • this switch has the disadvantage that it is Cooling of the consumer automatically switches on again, see above that there is repeated switching on and off of the consumer comes when the malfunction does not occur after the first shutdown is eliminated. Such a clocking switching behavior is however often undesirable.
  • EP 0 284 916 A2 Another switch known, the one from a cover part PTC thermistor material includes sealed lower part, in which the Rear derailleur is arranged.
  • the bimetal rear derailleur includes in known a bimetallic snap disc and a spring washer, on which a movable contact part is held. Below the response temperature of the bimetallic snap disc the movable contact part is countered by the spring washer a fixed contact part provided on the cover part is pressed, which is like a rivet through the cover part extends and merges into a head outside.
  • the bottom part is made of electrically conductive material, so that Switchgear a conductive connection at low temperatures between the lower part and the head of the fixed contact part manufactures.
  • the cover part is in conductive connection both with the fixed contact part as well as with the lower part, so that it is electrically connected in parallel to the switching mechanism.
  • the cover part comprises a ceramic support part on which a Coal resistor is arranged as the heating resistor for the Self-holding function ensures.
  • the cover part is made of thermistor material, points it does not have the required pressure stability in the rough Everyday use of the known switch is often required.
  • Such switches are namely for temperature monitoring used by motors, heating coils, etc., often strong mechanical loads due to the operation exposed to the vibrations associated with the consumer to be protected are. Strong pressures on the lid of the Temperature monitor are exercised.
  • the parallel resistor is a carbon resistor
  • the The lid itself is made of a mechanically more stable material be made, but it is the same as for the cover part a through-connection made of PTC thermistor material through the cover to the outside world, which is discussed at the beginning Switch is not needed.
  • the switch known from EP 0 284 916 A2 therefore has compared to the switch mentioned at the outset, it has the advantage that it is provided with a self-holding function brings for it but other drawbacks that come with the elaborate Construction and the lower mechanical strength.
  • This switch includes one with conductive and insulating Coated ceramic carrier plate, on the one encapsulated bimetal rear derailleur is arranged next to the PTC thermistor module that sits electrically parallel to the Rear derailleur is switched. On the ceramic carrier plate is further a thick film resistor arranged under the rear derailleur leads and is connected in series with this.
  • the well-known switch is also in series with one protective consumer switched so that it from the operating current flows through this consumer. Stands at the same time this switch in a known manner in thermal connection with the consumer to be monitored.
  • the operating current increases of the consumer due to a defect in prohibited
  • the thick-film resistor connected in series heats up the rear derailleur so that it opens so that the PTC resistor connected in parallel takes over the current.
  • this switch is also used if the switch is too high Temperatures of the consumer to be protected opened, whereby the PTC resistor also for a self-holding of the now open rear derailleur.
  • this task is discussed at the beginning Switch released in that directly on the inside of the housing at least one resistor is arranged in a Switch position of the rear derailleur in series with this between Cover part and lower part is switched.
  • the object underlying the invention is achieved in this way completely solved.
  • the inventor of the present application has namely recognized that it is surprisingly possible to have one Resistance immediately inside on the electrically conductive Apply lid part or on the electrically conductive lower part and the required resistance value for the Self-holding function and / or overcurrent sensitivity adjust.
  • the resistance ensures a current sensitivity of the new switch.
  • the resistance should have a value between approx. 50 m ⁇ and 30 ⁇ . This can e.g. by bismuth ruthenate, which in the Screen printing process on the lid part or the bottom part can be applied.
  • the resistor is in series with the rear derailleur is switched if this is above the response temperature is located, i.e. has opened the circuit, it ensures a self-holding function.
  • the resistance value approx. 10 to 100 kQ which e.g. by barium titanate is achieved, which is glued with conductive adhesive or by Cathode sputtering can be "sputtered on".
  • a further resistance arranged directly on the inside of the housing is in a different switching position of the rear derailleur in Row with this switched between the cover part and lower part is.
  • the rear derailleur is on Movable contact part comprises that of one by one Bimetallic snap disk movable, electrically conductive Spring washer is worn and in a first switching position of the rear derailleur on the inside of a contact area of the cover part abuts, the spring washer with its edge on a Support contact area of the lower part.
  • contact part in a second Switch position of the rear derailleur on another contact area of the lower part rests and the spring washer with her Edge in contact with another contact area on the cover part is.
  • the advantage here is that a changeover switch is provided, so to speak will, however, can use the well-known rear derailleur.
  • the generic switch it is only for this required to attach the insulating film only so that the inside of the cover part is no longer opposite the Inside the housing, i.e. opposite the edge of the bimetallic snap disk and / or the spring washer, is isolated.
  • the known switching mechanism thus connects the cover part and the lower part on the one hand in that the movable contact part on the Cover part and the edge of the spring washer on the lower part is present, while in the other switching position the movable Contact part on the lower part and the edge of the spring washer if necessary with the inner edge of the bimetallic snap disc abuts the cover part. That way, a very simple changeover switch created, which now depends on The individual resistors need accordingly on the inside can be arranged from the cover part and lower part.
  • the resistance can e.g. be designed as a disc and then in the contact areas of the movable contact part on the cover part or be arranged on the bottom part.
  • the resistor it is possible to form the resistor as a ring and thus put it on the contact areas for the edge of the spring washer on the To be arranged on the inside of the cover part or of the base part.
  • other geometries are in view of setting the Resistance value conceivable, e.g. Meandering or spiral shapes.
  • the only figure shows a schematic diagram of the new one Switch in longitudinal section.
  • 10 denotes a switch that comprises a housing 12 in which a temperature-dependent switching mechanism 13 is arranged.
  • the housing 12 comprises an electrical conductive material manufactured lower part 14 and a likewise electrically conductive cover part 15 through an insulating ring 16 is electrically insulated from the lower part 14.
  • the mechanical cohesion between lower part 14, cover part 15 and insulating ring 16 can e.g. by one for reasons of clarity not shown flanged edge, by gluing, by Jamming or other suitable measures. For the present invention, this plays mechanical Fastening does not play an important role. Because of more related Information is given on the above References printed.
  • the switch 10 is on its underside 17 and one Locking recess 18 on the cover part 15 with a circuit connected in series with a consumer to be protected is switched.
  • the bimetal rear derailleur 13 includes a spring washer 21, the carries a movable contact part 22.
  • a bimetallic snap disk 23 is about the mobile Contact part 22.
  • the Bimetal snap disc In the switch position shown in Figure 1 is the Bimetal snap disc below its response temperature.
  • the spring washer 21 is supported its edge 24 on a contact area 25 on the inside of the lower part 14 and presses the movable contact part 22 against one Contact area 26, the inside of a projection 27 of the Cover part 15 is provided. This projection corresponds to 27 the locking recess 18 on the outside of the cover part 15.
  • the switching mechanism 13 then finally reaches its second Switching state in which the movable contact part 22 below supported on the lower part 14 at a further contact area 29, while the edge 24 of the spring washer 21 may now under Intermediate layer of the bimetallic snap disk 23 at the contact area 28 is present. This way, one is now electrical again conductive connection between the cover part 15 and the Lower part 14 made.
  • the switch 10 thus works as Changeover switch.
  • the resistance disc "responsible for overcurrent sensitivity" 32 on the cover part 15 is e.g. made from bismuth ruthenate, has a diameter of 1.5 mm and a layer thickness of 0.05 mm, resulting in a resistance value of approx. 4 ⁇ which is suitable for overcurrent sensitivity.
  • the resistance ring 31, which is also made of bismuth ruthenate is manufactured an outer diameter of 9 and one Have an inner diameter of 8 mm, so that it has a thickness of 0.05 mm shows a total resistance of 0.5 ⁇ , which also provides overcurrent sensitivity.
  • the resistance disc 29 responsible for self-retention is e.g. made from barium titanate and is a round disc with a thickness of 1 mm, glued on with conductive glue becomes.
  • conductive plastic can also be used.
  • the resistance value of the resistance disc 29 becomes corresponding the known geometric relationships so adjusted that it is 10 to 100 kQ when warm.
  • a corresponding one Resistance value can also be determined by suitable dimensioning reach the resistance ring 28. It is also possible that Barium titanate or a comparable PTC semiconductor Sputtering on the cathode.

Landscapes

  • Thermally Actuated Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Claims (10)

  1. Interrupteur pour l'ouverture et/ou la fermeture d'un circuit électrique, comportant un mécanisme de coupure (13) dépendant de la température et un boítier (12) qui reçoit le mécanisme de coupure et qui comporte une partie inférieure (14) électriquement conductrice ainsi qu'une partie de couvercle (15) électriquement conductrice, qui ferme la précédente et qui est isolée électriquement par rapport à la partie inférieure (14), le mécanisme de coupure (13) réalisant une liaison électrique, en fonction de sa température, entre la partie du couvercle (15) et la partie inférieure (14), et le circuit électrique pouvant être relié d'une part à la partie de couvercle (15) et d'autre part à la partie inférieure (14),
    caractérisé en ce que directement à l'intérieur du boítier (12) est disposée au moins une résistance (31, 32, 33, 34) qui, dans une position de commande du mécanisme de coupure (13), est montée en série avec ce dernier, entre la partie de couvercle (15) et la partie inférieure (14).
  2. Interrupteur selon la revendication 1, caractérisé en ce qu'une autre résistance (31, 32, 33, 34) est disposée directement à l'intérieur sur le boítier (12) et qui, dans une autre position de commande du mécanisme de coupure (13), est montée en série avec ce dernier, entre la partie de couvercle (15) et la partie inférieure (14).
  3. Interrupteur selon la revendication 1 ou 2, caractérisé en ce que le mécanisme de coupure (13) comprend un élément de contact mobile (22) qui est supporté par un disque élastique (21) électriquement conducteur, déplaçable sous l'effet d'un disque à déclic bimétallique (23), et qui, dans une première position de commande du mécanisme de coupure (13), s'applique à l'intérieure contre une zone de contact (26) de la partie de couvercle (15), le disque métallique (21) prenant appui par son bord (24) sur une zone de contact (25) de la partie inférieure (14).
  4. Interrupteur selon la revendication 3, caractérisé en ce que la résistance (32, 31) est disposée sur la zone de contact (26, 25) de la partie de couvercle (15) ou de la partie inférieure (14).
  5. Interrupteur selon la revendication 3, caractérisé en ce que la partie de contact mobile (22) s'applique, dans une deuxième position de commande du mécanisme de coupure (13), à l'intérieur, contre une autre zone de contact (29) de la partie inférieure (14), et le disque élastique (21) est en contact, par son bord (24), avec une autre zone de contact (28) de la partie de couvercle (15).
  6. Interrupteur selon la revendication 5, caractérisé en ce que la résistance (33, 34) est disposée sur l'autre zone de contact (28, 29) de la partie de couvercle (15) ou de la partie inférieure (14).
  7. Interrupteur selon les revendications 2, 3 et 5, caractérisé en ce que les deux résistances (32, 33; 31, 34) sont disposées sur la partie de couvercle (15) ou sur la partie inférieure (14).
  8. Interrupteur selon les revendications 3 et 5, caractérisé en ce que la résistance (32, 34) est conformée en disque et est collée sur la zone de contact (26) de la partie de couvercle (15) ou sur l'autre zone de contact (29) de la partie inférieure (14).
  9. Interrupteur selon les revendications 3 et 5, caractérisé en ce que la résistance (31, 33) est conformée en anneau et est appliquée sur la zone de contact (25) de la partie inférieure (14) et/ou sur l'autre zone de contact (28) de la partie de couvercle (15), de préférence par procédé sérigraphique.
  10. Interrupteur selon l'une des revendications 1 à 7, caractérisé en ce que la résistance (31, 32, 33, 34) est appliquée par pulvérisation cathodique.
EP96116940A 1996-02-10 1996-10-22 Interrupteur avec un dispositif de commutation dépendant de la température Expired - Lifetime EP0789376B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19604939 1996-02-10
DE19604939A DE19604939C2 (de) 1996-02-10 1996-02-10 Schalter mit einem temperaturabhängigen Schaltwerk

Publications (3)

Publication Number Publication Date
EP0789376A2 EP0789376A2 (fr) 1997-08-13
EP0789376A3 EP0789376A3 (fr) 1998-05-27
EP0789376B1 true EP0789376B1 (fr) 2001-07-04

Family

ID=7785079

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96116940A Expired - Lifetime EP0789376B1 (fr) 1996-02-10 1996-10-22 Interrupteur avec un dispositif de commutation dépendant de la température

Country Status (6)

Country Link
US (1) US5892429A (fr)
EP (1) EP0789376B1 (fr)
AT (1) ATE202874T1 (fr)
DE (2) DE19604939C2 (fr)
ES (1) ES2159340T3 (fr)
PT (1) PT789376E (fr)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19527254C2 (de) * 1995-07-26 2000-01-20 Thermik Geraetebau Gmbh Temperaturwächter
DE19527253B4 (de) * 1995-07-26 2006-01-05 Thermik Gerätebau GmbH Nach dem Baukastenprinzip aufgebauter Temperaturwächter
DE19748589C2 (de) * 1997-11-04 1999-12-09 Marcel Hofsaes Schalter mit einem temperaturabhängigen Schaltwerk
DE19827113C2 (de) * 1998-06-18 2001-11-29 Marcel Hofsaes Temperaturabhängiger Schalter mit Stromübertragungsglied
DE19847208C2 (de) * 1998-10-13 2002-05-16 Marcel Hofsaes Schalter mit einem Isolierstoffträger
DE19847209C2 (de) * 1998-10-13 2002-04-25 Marcel Hofsaes Schalter mit einem Isolierstoffträger
DE19919648C2 (de) * 1999-04-30 2003-03-13 Marcel Hofsaess Gerät mit in einer Tasche vorgesehenem temperaturabhängigen Schaltwerk
US6229121B1 (en) * 1999-07-23 2001-05-08 Industrial Technology Research Institute Integrated thermal buckling micro switch with electric heater and sensor
US6707372B2 (en) * 2000-10-04 2004-03-16 Honeywell International, Inc. Thermal switch containing preflight test feature and fault location detection
DE10110562C1 (de) * 2001-03-06 2002-12-19 Marcel Hofsaes Temperaturabhängiger Schalter mit aufgestempelter Kleberschicht
US20050122201A1 (en) * 2003-08-22 2005-06-09 Honeywell International, Inc. Thermal switch containing preflight test feature and fault location detection
JP2006092825A (ja) * 2004-09-22 2006-04-06 Fuji Denshi Kogyo Kk 温度スイッチと温度スイッチの組立方法
US7446643B2 (en) * 2004-11-23 2008-11-04 The Hong Kong Polytechnic University Resetable over-current and/or over-temperature protection system
DE102009030353B3 (de) * 2009-06-22 2010-12-02 Hofsaess, Marcel P. Kappe für einen temperaturabhängigen Schalter sowie Verfahren zur Fertigung eines temperaturabhängigen Schalters
DE102009039948A1 (de) * 2009-08-27 2011-03-03 Hofsaess, Marcel P. Temperaturabhängiger Schalter
DE102012103306B3 (de) * 2012-04-17 2013-04-25 Thermik Gerätebau GmbH Temperaturabhängiger Schalter mit Kontaktteil als Heizwiderstand
JP6157856B2 (ja) * 2013-01-10 2017-07-05 カルソニックカンセイ株式会社 熱感知装置
EP2943858A1 (fr) * 2013-01-14 2015-11-18 Scuola Superiore di Studi Universitari e di Perfezionamento Sant'Anna Procédé et appareil apparenté pour surveiller des performances biomécaniques de membres humains
DE102013101393B4 (de) * 2013-02-13 2014-10-09 Thermik Gerätebau GmbH Temperaturabhängiger Schalter
DE102013108508A1 (de) * 2013-08-07 2015-02-12 Thermik Gerätebau GmbH Temperaturabhängiger Schalter
DE102013017232A1 (de) * 2013-10-17 2015-04-23 Thermik Gerätebau GmbH Temperaturabhängiges Schaltwerk
DE102014108518A1 (de) * 2014-06-17 2015-12-17 Thermik Gerätebau GmbH Temperaturabhängiger Schalter mit Distanzring
DE102022134379B3 (de) 2022-12-21 2024-02-08 Marcel P. HOFSAESS Temperaturabhängiger Schalter
CN121331715B (zh) * 2025-12-17 2026-03-27 江苏常胜电器股份有限公司 一种断电复位抗电脉过流过热保护器及其制造方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2917482C2 (de) * 1979-04-30 1982-11-25 Peter 7530 Pforzheim Hofsäss Übertemperaturschutzschalter
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
DE8806648U1 (de) * 1988-05-20 1989-06-22 Hofsäss, Peter, 7530 Pforzheim Temperaturschalteinrichtung
DE4142716C2 (de) * 1991-12-21 1997-01-16 Microtherm Gmbh Thermoschalter
DE9203559U1 (de) * 1992-03-17 1992-05-21 Knobel Ag Lichttechnische Komponenten, Ennenda Bimetall-Thermoschalter mit Dickschicht-Widerstandsheizelement
DE9214940U1 (de) * 1992-11-03 1992-12-17 Thermik Geraetebau Gmbh, 7530 Pforzheim Temperaturwächter
DE9406806U1 (de) * 1994-04-23 1995-06-01 Thermik Gerätebau GmbH, 75181 Pforzheim Bimetallschalter, insbesondere stromabhängiger Schalter
DE4428226C1 (de) * 1994-08-10 1995-10-12 Thermik Geraetebau Gmbh Temperaturwächter

Also Published As

Publication number Publication date
DE19604939C2 (de) 1999-12-09
EP0789376A2 (fr) 1997-08-13
ATE202874T1 (de) 2001-07-15
DE59607216D1 (de) 2001-08-09
DE19604939A1 (de) 1997-08-14
ES2159340T3 (es) 2001-10-01
EP0789376A3 (fr) 1998-05-27
PT789376E (pt) 2001-10-30
US5892429A (en) 1999-04-06

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