EP0951041B1 - Interrupteur à commande thermique - Google Patents

Interrupteur à commande thermique Download PDF

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Publication number
EP0951041B1
EP0951041B1 EP99100618A EP99100618A EP0951041B1 EP 0951041 B1 EP0951041 B1 EP 0951041B1 EP 99100618 A EP99100618 A EP 99100618A EP 99100618 A EP99100618 A EP 99100618A EP 0951041 B1 EP0951041 B1 EP 0951041B1
Authority
EP
European Patent Office
Prior art keywords
switch
connection electrodes
contact
resistance element
insulating support
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
EP99100618A
Other languages
German (de)
English (en)
Other versions
EP0951041A2 (fr
EP0951041A3 (fr
Inventor
Marcel Hofsäss
Michael Becher
Edwin Güttinger
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.)
Thermik Geraetebau GmbH
Original Assignee
Thermik Geraetebau GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7864679&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0951041(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Thermik Geraetebau GmbH filed Critical Thermik Geraetebau GmbH
Publication of EP0951041A2 publication Critical patent/EP0951041A2/fr
Publication of EP0951041A3 publication Critical patent/EP0951041A3/fr
Application granted granted Critical
Publication of EP0951041B1 publication Critical patent/EP0951041B1/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
    • 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 attached to an insulating support terminal electrodes, a switching mechanism which establishes an electrically conductive connection between the two terminal electrodes in dependence on its temperature, and a resistor part which is electrically connected in parallel to the switching mechanism with the two terminal electrodes ,
  • Such a switch is known from DE-OS 21 13 388.
  • the known switch is a thermostat for protecting an electrical device which is electrically connected in series with the device to be protected and in thermal contact with the device.
  • the two terminal electrodes are flat metal parts, one of which carries a fixed mating contact and the other a bimetallic, at its free end a cooperating with the fixed counter-contact movable mating contact sits.
  • the two metal parts are arranged one above the other and clamp between them a PTC resistor, which is in electrical contact with both terminal electrodes with the interposition of a spring.
  • This construction of insulating support, metal parts with fixed and movable mating contact and PTC resistor is inserted into a housing, whereupon the housing opening is potted with a sealing compound.
  • Another self-holding temperature-dependent switch is known from DE 43 36 564 A1.
  • This known switch comprises a arranged in an encapsulated housing bimetallic switching mechanism.
  • the housing is arranged on a carrier plate, on which conductor tracks and resistors are provided. Outside the housing a PTC resistor is provided on the carrier, which is soldered parallel to the rear derailleur with external connections.
  • the above-mentioned temperature-dependent switch in such a way that it is inexpensive and easy to assemble, preferably an exchange of the resistance part should be possible.
  • the inventors of the present application have recognized that a surprisingly simple switch is provided when the resistive member is not sandwiched between the terminal electrodes or on a separate carrier adjacent to the switch, but is held directly inside the insulating substrate.
  • the switch can then be completely assembled before then the resistance part is subsequently inserted into the insulation support. If the resistance part is omitted, the switch lacks the self-holding function, which is sufficient in many applications, however.
  • the switch is to be provided with a self-holding function, then only the resistance part is to be inserted.
  • This possibility has also been the well-known from the aforementioned DE 43 36 564 Al switch, there was the subsequent assembly of the resistor part, however, very expensive.
  • the above-mentioned DE-OS 21 13 388 does not open this part of the production of the switch, the PTC resistor clamped in the interior of the housing between the terminal electrodes had to be fed during production in proper design.
  • the new switch thus has the advantage that the basic switch can be prefabricated and then provided with a resistor depending on your choice. Since in this way the basic switch can be made in a single production run in a much larger number, namely because the specialization of the switch is only subsequently determined, the overall result is a reduction in production costs, since the lot size in the manufacture of the basic switch be significantly greater can than the generic switch.
  • the two terminal electrodes comprise flat metal parts, which are arranged in a plane, and when the resistance part rests on the metal parts.
  • the electrical connection between the resistor part and the terminal electrodes is effected by the geometrical arrangement of the resistor part on the terminal electrodes, where they are held by the insulating part.
  • the two terminal electrodes are provided with contact ends, which are arranged one behind the other in the longitudinal direction of the switch at a distance, and when the resistance part bridges the distance.
  • This measure is also advantageous in terms of assembly, since it allows e.g. a temperature-dependent switching mechanism in which a bimetallic spring is attached to one contact end and carries at its other end a movable mating contact which cooperates with a fixed mating contact fixed to the other contact end. As it were geometrically and electrically parallel to this bimetallic spring, the resistance part is then arranged.
  • the insulating support is provided with projections which pinch the resistance member between them and press on the terminal electrodes.
  • the one terminal electrode carries a fixed mating contact and the other carries a bimetal part, at the free end of which a movable mating contact cooperating with the fixed mating contact is seated.
  • the resistance part is a PTC block.
  • 10 denotes a temperature-dependent switch, which comprises an insulating support 11, to which two in Fig. 1 dashed lines shown connecting electrodes 12, 13 are attached.
  • the terminal electrode 13 is L-shaped and the terminal electrode 12 Z-shaped, so that they with their contact ends 12a, 13a in the longitudinal axis of the switch 10 face each other.
  • an upwardly open opening 14 is provided, in which the contact ends 12a, 13a protrude so that they are accessible from above.
  • the two terminal electrodes 12, 13 comprise flat metal parts, which are arranged in Fig. 1, left next to the switch 10 side by side and in the region of the opening 14 in the longitudinal direction of the switch 10 in a row indicated at 15 level.
  • the two contact ends 12a, 13a have a distance indicated at 16 in the longitudinal direction of the switch 10 at 16.
  • the terminal electrodes 12, 13 and thus the switch 10 are electrically connected to a device to be protected.
  • connection electrodes 12, 13 or more precisely on their contact ends 12a, 13a there is a resistance part 18, which in the exemplary embodiment shown is a PTC block 19, which bridges the distance 16.
  • the insulating support 11 has two crescent-shaped projections 21, 22 which extend perpendicular to the plane of the drawing of FIG. 1, that is in the plane of the drawing of FIG. 2.
  • the projections 21, 22 clamp between the PTC block 19 and engage each with a tapered transverse projection 23, 24, whereby the PTC block 19 is pressed onto the terminal electrodes 12, 13.
  • the PTC block 19 is pressed in Fig. 1 from above between the projections 21, 22, which outwardly rebound so that the PTC block 19 comes to lie on the contact ends 12a, 13a, the transverse projections 23, 24 pushing the PTC block 19 in Fig. 2 down so that a good electrical contact to the terminal electrodes 12, 13th will be produced.
  • a cavity 26 is provided, in which a temperature-dependent switching mechanism 27 is arranged.
  • the contact end 12a protrudes into this cavity from the left and the contact end 13a from the right.
  • the terminal electrode 12 carries there at its contact end 12a a fixed counter-contact 28 which cooperates with a movable mating contact 29 which is arranged at a free end of a bimetallic spring 31.
  • the bimetallic spring 31 is connected to a bent portion 33 of the terminal electrode 13.
  • the bimetallic spring 31 is in its low temperature position in which it presses the movable mating contact 29 against the fixed mating contact 28, so that an electrically conductive connection between the two terminal electrodes 12, 13 is produced.
  • the switch 10 With its terminal electrodes 12, 13, the switch 10 is connected in series with an electrical device to be protected in an electrical circuit, wherein the operating current of the device via the terminal electrodes 12, 13 and the bimetal spring 31 is guided. Increases now the temperature of the switch 10 and thus the bimetal spring 31 beyond the switching temperature, so the bimetal spring 31 lifts the movable counter contact 29 of the fixed mating contact 28, whereby the circuit is interrupted, so that the protected device is turned off.
  • the PTC block 19 can be designed differently from its resistance value, whereby different switching temperatures can be obtained. For this purpose, it is only necessary to arrange different PTC blocks 19 between the resilient projections 21, 22 and the terminal electrodes 12, 13 in the opening 14.

Landscapes

  • Thermally Actuated Switches (AREA)
  • Thermistors And Varistors (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Control Of Combustion (AREA)
  • Switches With Compound Operations (AREA)
  • Push-Button Switches (AREA)

Claims (6)

  1. Interrupteur à influence thermique (10) avec deux électrodes de raccordement (12, 13) fixées sur un support isolant (11), un dispositif de commutation (27) qui en fonction de sa température ëtablit une liaison conductrice d'électricité entre les deux électrodes de raccordement (12, 13), ainsi qu'un élément de résistance (18), qui est électriquement relié aux deux électrodes de raccordement en parallèle du dispositif de commutation (27), caractérisé en ce qu'on insère l'élément de résistance (18) dans le support isolant (11) perpendiculairement aux électrodes de raccordement (12, 13), pour qu'il soit placé à l'intérieur du support isolant (11) et maintenu par ce dernier.
  2. Interrupteur selon la revendication 1, caractérisé en ce que les deux électrodes de raccordement (12, 13) comportent des éléments métalliques plats qui sont disposés dans un plan (15) et en ce que l'élément de résistance (18) s'appuie sur les éléments métalliques.
  3. Interrupteur selon la revendication 2, caractérisé en ce que les deux électrodes de raccordement (12, 13) sont munies d'extrémités de contact (12a, 13a), qui en direction longitudinale de l'interrupteur (10) sont disposées l'une derrière l'autre à une certaine distance (16) et en ce que l'élément de résistance (18) enjambe la distance (16).
  4. Interrupteur selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le support isolant (11) est muni de saillies élastiques (21, 22) qui serrent l'élément de résistance (18) entre elles et le pressent sur les électrodes de raccordement (12, 13).
  5. Interrupteur selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'une des électrodes de raccordement (12) porte un contre-contact fixe (28) et en ce que l'autre électrode de raccordement (13) porte un élément bimétallique (31) sur l'extrémité libre duquel est placé un contre-contact mobile (29) coopérant avec le contre-contact fixe (28).
  6. Interrupteur selon l'une quelconque des revendications 1 à 5, caractérisé en ce que l'élément de résistance (18) est un bloc PTC (19).
EP99100618A 1998-04-16 1999-01-14 Interrupteur à commande thermique Expired - Lifetime EP0951041B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19816809 1998-04-16
DE19816809A DE19816809C2 (de) 1998-04-16 1998-04-16 Temperaturabhängiger Schalter

Publications (3)

Publication Number Publication Date
EP0951041A2 EP0951041A2 (fr) 1999-10-20
EP0951041A3 EP0951041A3 (fr) 2000-08-02
EP0951041B1 true EP0951041B1 (fr) 2006-03-22

Family

ID=7864679

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99100618A Expired - Lifetime EP0951041B1 (fr) 1998-04-16 1999-01-14 Interrupteur à commande thermique

Country Status (7)

Country Link
US (1) US6181233B1 (fr)
EP (1) EP0951041B1 (fr)
AT (1) ATE321352T1 (fr)
AU (1) AU745178B2 (fr)
DE (2) DE19816809C2 (fr)
ES (1) ES2260861T3 (fr)
PT (1) PT951041E (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008017439U1 (de) 2008-07-02 2009-08-27 Tmc Sensortechnik Gmbh Temperaturabhängiger Schalter

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19909059C2 (de) * 1999-03-02 2003-10-16 Marcel Hofsaes Schalter mit Verschweißsicherung
JP4471479B2 (ja) * 2000-10-13 2010-06-02 ウチヤ・サーモスタット株式会社 サーマルプロテクタ
JP2005108585A (ja) * 2003-09-30 2005-04-21 Alps Electric Co Ltd 熱応動スイッチ
US7209337B2 (en) * 2005-04-19 2007-04-24 Remy International, Inc. Electrical thermal overstress protection device
US7800477B1 (en) * 2007-03-20 2010-09-21 Thermtrol Corporation Thermal protector
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
DE112021002500T5 (de) * 2020-04-24 2023-03-09 Uchiya Thermostat Co., Ltd. Lichtbogenbindungsmechanismus
DE102023102303B3 (de) * 2023-01-31 2024-03-28 Marcel P. HOFSAESS Temperaturabhängiger Schalter

Family Cites Families (19)

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Publication number Priority date Publication date Assignee Title
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 (fr) * 1970-03-26 1971-09-28
IT1112068B (it) * 1977-11-15 1986-01-13 Texas Instruments Italia Spa Perfezionamento nei rele' termici in particolare per l'avviamento di motori asincroni monofase
US4399423A (en) * 1982-03-29 1983-08-16 Texas Instruments Incorporated Miniature electric circuit protector
DE3220730A1 (de) * 1982-06-02 1983-12-08 Bayer Ag, 5090 Leverkusen Verfahren zur herstellung von 2,2-dimethyl-3-aryl-cyclopropan-carbonsaeuren (carbonsaeureestern), neue zwischenprodukte hierfuer und verfahren zu deren herstellung
DE3320730A1 (de) * 1983-01-15 1984-07-19 Fritz Eichenauer GmbH & Co KG, 6744 Kandel Temperaturwaechter
EP0128978B1 (fr) * 1983-06-20 1987-09-02 Texas Instruments Holland B.V. Thermostat
US4620175A (en) * 1985-10-11 1986-10-28 North American Philips Corporation Simple thermostat for dip mounting
DE8617033U1 (de) * 1986-06-26 1986-08-14 Temtech-Temperatur-Technik Hans-Peter Bojer, 7530 Pforzheim Bimetallschalter
DE3644514A1 (de) * 1986-12-24 1988-07-07 Inter Control Koehler Hermann Bimetallschalter
DK0453596T3 (da) * 1990-04-25 1995-08-14 Hofsaess Ulrika Temperaturomskifter
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
GB9109316D0 (en) * 1991-04-30 1991-06-19 Otter Controls Ltd Improvements relating to electric switches
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
US5268664A (en) * 1993-01-25 1993-12-07 Portage Electric Products, Inc. Low profile thermostat
DE4428226C1 (de) * 1994-08-10 1995-10-12 Thermik Geraetebau Gmbh Temperaturwächter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008017439U1 (de) 2008-07-02 2009-08-27 Tmc Sensortechnik Gmbh Temperaturabhängiger Schalter
DE102008031389B3 (de) * 2008-07-02 2009-10-22 Tmc Sensortechnik Gmbh Temperaturabhängiger Schalter

Also Published As

Publication number Publication date
AU2377199A (en) 1999-10-28
ES2260861T3 (es) 2006-11-01
ATE321352T1 (de) 2006-04-15
US6181233B1 (en) 2001-01-30
DE59913236D1 (de) 2006-05-11
PT951041E (pt) 2006-05-31
DE19816809C2 (de) 2001-10-18
AU745178B2 (en) 2002-03-14
DE19816809A1 (de) 1999-10-28
EP0951041A2 (fr) 1999-10-20
EP0951041A3 (fr) 2000-08-02

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