EP0778598A2 - Interrupteur avec un mécanisme de commutation actionné une température excessive - Google Patents

Interrupteur avec un mécanisme de commutation actionné une température excessive Download PDF

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Publication number
EP0778598A2
EP0778598A2 EP96115008A EP96115008A EP0778598A2 EP 0778598 A2 EP0778598 A2 EP 0778598A2 EP 96115008 A EP96115008 A EP 96115008A EP 96115008 A EP96115008 A EP 96115008A EP 0778598 A2 EP0778598 A2 EP 0778598A2
Authority
EP
European Patent Office
Prior art keywords
contact
switch
bimetallic
temperature
movable contact
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.)
Granted
Application number
EP96115008A
Other languages
German (de)
English (en)
Other versions
EP0778598B1 (fr
EP0778598A3 (fr
Inventor
Marcel Peter 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 EP0778598A2 publication Critical patent/EP0778598A2/fr
Publication of EP0778598A3 publication Critical patent/EP0778598A3/fr
Application granted granted Critical
Publication of EP0778598B1 publication Critical patent/EP0778598B1/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
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/64—Contacts

Definitions

  • this object is achieved in that the movable contact is formed in one piece with the spring part.
  • the object underlying the invention is completely achieved in this way.
  • the inventor of the present application has recognized that it is surprisingly not necessary to use a rotating part as a movable contact part, but that this movable contact can also be made from the material of the spring washer. So far, it had always been assumed in the prior art that the movable contact must be a separate contact part, which is preferably loosely in the spring washer, but at most retrospectively suitable measures can be attached to the spring washer. In this way it should be ensured that the spring properties of the spring washer can be produced independently of the solid contact part. However, the inventor has now recognized that this is based on a prejudice; the spring properties of the spring part, on which the contact is formed in one piece, are completely sufficient for the intended applications. Furthermore, the inventor has found that it is also not necessary to use a rotary part as a movable contact, but that the contact resistances and the current conductivity are completely sufficient even with a movable contact formed from the material of the spring part.
  • the spherical cap has an insulating layer in the contact area with the bimetal snap disk.
  • the spherical cap has a resistance layer in the contact area with the fixed contact.
  • the single figure shows a schematic longitudinal section through the new switch.
  • a switch is shown at 10, which comprises a housing 11, in which a bimetallic switching mechanism 12 is arranged.
  • a heating resistor 21 is provided on the inside of the cover part 15 and is in electrical connection with the shoulder 16 via an outer contact ring 22. Via an inner contact ring 23, the heating resistor 21 is connected to a fixed contact 24 which, in the form of a rivet 25, passes through the cover part 15 and forms a first outer connection 26 of the switch 10.
  • An insulating layer 27 is provided on the heating resistor 21 between the two contact rings 22, 23.
  • the cap 30 In the contact area with the fixed contact 24, the cap 30 has a resistance layer 35, which forms a heating resistor 36. Furthermore, an insulating layer 37 is provided on the calotte 30 in the contact area with the bimetal snap disk 33, so that there is no electrical connection between the spring washer 30 and the bimetal snap disk 33 in this area.
  • the bimetallic snap disc 33 rises above the response temperature as a result of an increased temperature of the device thermally connected to the new switch 10 or due to an excessive current flow through the heating resistor 36 and the associated heat development, the bimetallic snap disc suddenly snaps , is supported with its edge 34 on the insulating layer 27 and lifts the calotte 30 against the force of the spring washer 29 from the fixed contact 24.
  • the current now flows through the heating resistor 21, which develops sufficient heat to keep the bimetal switchgear in the open state. Even without the insulating layer 27, no current would flow through the bimetallic snap disk 33, since this is insulated from the spring washer 29 by the insulating layer 37.
  • the insulating layer 37 in the state shown in FIG. 1 further ensures that Even in the rest position of the switching mechanism 12, no partial flow flows through the bimetallic snap disk 33 and the switching temperature thereby changes.

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Thermally Actuated Switches (AREA)
  • Keying Circuit Devices (AREA)
  • Slide Switches (AREA)
EP96115008A 1995-12-09 1996-09-19 Interrupteur avec un mécanisme de commutation actionné une température excessive Expired - Lifetime EP0778598B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19546004 1995-12-09
DE19546004A DE19546004C2 (de) 1995-12-09 1995-12-09 Schalter mit einem bei Übertemperatur schaltenden Schaltwerk

Publications (3)

Publication Number Publication Date
EP0778598A2 true EP0778598A2 (fr) 1997-06-11
EP0778598A3 EP0778598A3 (fr) 1998-05-27
EP0778598B1 EP0778598B1 (fr) 2002-04-10

Family

ID=7779671

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96115008A Expired - Lifetime EP0778598B1 (fr) 1995-12-09 1996-09-19 Interrupteur avec un mécanisme de commutation actionné une température excessive

Country Status (4)

Country Link
US (1) US5903210A (fr)
EP (1) EP0778598B1 (fr)
AT (1) ATE216127T1 (fr)
DE (2) DE19546004C2 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
KR100982038B1 (ko) * 2009-10-30 2010-09-14 한백디스템(주) 과전류 차단기
US20130021132A1 (en) * 2011-07-21 2013-01-24 Honeywell International Inc. Permanent one-shot thermostat
DE102011119633B3 (de) * 2011-11-22 2013-04-11 Marcel P. HOFSAESS 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
DE102013108508A1 (de) * 2013-08-07 2015-02-12 Thermik Gerätebau GmbH Temperaturabhängiger Schalter
DE102014108518A1 (de) * 2014-06-17 2015-12-17 Thermik Gerätebau GmbH Temperaturabhängiger Schalter mit Distanzring
DE102015114248B4 (de) * 2015-08-27 2019-01-17 Marcel P. HOFSAESS Temperaturabhängiger Schalter mit Schneidgrat

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1433185A (fr) * 1965-05-13 1966-03-25 Borletti Spa Thermocontact à bilame
US4492946A (en) * 1983-10-20 1985-01-08 Therm-O-Disc, Incorporated Edge-actuated thermostat
US5121095A (en) * 1990-02-14 1992-06-09 Susumu Ubukata Thermally responsive switch

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
DE3319225A1 (de) * 1983-05-27 1984-11-29 Microtherm Gmbh, 7530 Pforzheim Thermoschalter
DE3319227A1 (de) * 1983-05-27 1984-11-29 Microtherm Gmbh, 7530 Pforzheim Thermoschalter
DE3710672C2 (de) * 1987-03-31 1997-05-15 Hofsaes Geb Zeitz Ulrika Temperaturwächter mit einem Gehäuse
US4894634A (en) * 1988-10-19 1990-01-16 Texas Instruments Incorporated Switch device
JPH02126336U (fr) * 1989-01-17 1990-10-18
DE4142716C2 (de) * 1991-12-21 1997-01-16 Microtherm Gmbh Thermoschalter
DE4206157A1 (de) * 1992-02-28 1993-09-16 Hofsass P Thermoschalter
GB2275823B (en) * 1993-02-18 1996-11-27 Otter Controls Ltd Improvements relating to electric switches
DE4337141C2 (de) * 1993-10-30 1996-06-05 Hofsaes Geb Zeitz Ulrika Temperaturabhängiger Schalter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1433185A (fr) * 1965-05-13 1966-03-25 Borletti Spa Thermocontact à bilame
US4492946A (en) * 1983-10-20 1985-01-08 Therm-O-Disc, Incorporated Edge-actuated thermostat
US5121095A (en) * 1990-02-14 1992-06-09 Susumu Ubukata Thermally responsive switch

Also Published As

Publication number Publication date
ATE216127T1 (de) 2002-04-15
EP0778598B1 (fr) 2002-04-10
EP0778598A3 (fr) 1998-05-27
DE59609050D1 (de) 2002-05-16
DE19546004A1 (de) 1997-06-19
DE19546004C2 (de) 1998-01-15
US5903210A (en) 1999-05-11

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