EP0915491A2 - Interrupteur avec un mécanisme de commutation sensible à la température - Google Patents

Interrupteur avec un mécanisme de commutation sensible à la température Download PDF

Info

Publication number: EP0915491A2
Authority: EP; European Patent Office
Prior art keywords: electrode; switch; switching mechanism; housing part; housing
Prior art date: 1997-11-04
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

EP98117532A

Other languages

German (de)

English (en)

Other versions

EP0915491B1 (fr

EP0915491A3 (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.)

Individual

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.)

1997-11-04

Filing date

1998-09-16

Publication date

1999-05-12

1998-09-16 Application filed by Individual filed Critical Individual

1999-05-12 Publication of EP0915491A2 publication Critical patent/EP0915491A2/fr

1999-12-08 Publication of EP0915491A3 publication Critical patent/EP0915491A3/fr

2006-11-15 Application granted granted Critical

2006-11-15 Publication of EP0915491B1 publication Critical patent/EP0915491B1/fr

2018-09-16 Anticipated expiration legal-status Critical

Status 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
- H01H81/00—Protective switches in which contacts are normally closed but are repeatedly opened and reclosed as long as a condition causing excess current persists, e.g. for current limiting
- H01H81/02—Protective switches in which contacts are normally closed but are repeatedly opened and reclosed as long as a condition causing excess current persists, e.g. for current limiting electrothermally operated

Definitions

the present invention relates to a switch with a temperature-dependent rear derailleur housing that a first housing part, on the inner bottom one with a first External connection connected first electrode is arranged, and a second housing part which closes the first housing part which has one connected to a second external connection comprises second electrode, the switching mechanism depending an electrically conductive connection from its temperature between the first and the second electrode.
the first housing part is made of insulating material manufactured, in which the first electrode by injection molding or embedded potting as an integral part is.
This first housing part is replaced by a second housing part in the form of an electrically conductive material Bottom closed, the inside as a second electrode works.
Both electrodes are, so to speak, disc-shaped sheet metal parts which are integrally formed approaches that are external connections serve the switch.
the bottom part lies on it a shoulder of the first housing part and is replaced by a hot stamped ring held on this.
the Spring washer is supported with its edge on the bottom part and the movable contact part carried by her below the Switching temperature against an inwardly projecting counter contact on the other electrode.
the contact part is fitted with a bimetal snap disc, which is free of forces below its switching temperature and in the event of a temperature increase beyond its switching point movable contact part against the force of the spring washer Counter contact lifts off and thereby the electrical connection between the two external connections opens.
the known switch described so far is extremely robust and has very small external dimensions, which is why it is not only universal but can be used especially where little Assembly space is available, e.g. in coils of transformers or electric motors.
Such switches are in series between the device to be protected and a power supply are switched, so that the operating current of the device to be protected through the switch that flows this current at an impermissible The temperature increase therefore switches off.
This protective function of a switch with temperature-dependent Switchgear is called "current-dependent" switching and therefore causes a series resistor in series with the rear derailleur is switched, which is also from the operating current of the protective device is flowed through.
this series resistance and its thermal Coupling to the switch leads to a certain current flow through the switch and thus the series resistance to development a certain amount of heat, which in turn switches and so that the bimetallic snap disc is heated in a defined manner.
On the Resistance value can therefore be an upper limit for the operating current be predetermined. Exceeds the operating current this value is determined by the one developed in the series resistor Heat the bimetal snap disc above its switching temperature raised so that the switch already opens, before the device to be protected has overheated.
Such a switch is known from DE 43 36 564 A1.
This switch initially comprises an encapsulated bimetallic switching mechanism, that housed in a two-piece metal case is, as is known for example from DE 21 21 802 A1.
This encapsulated switch is now placed on a ceramic support, on which there is a thick film resistor, the via conductor tracks with the conductive lower part of the encapsulated Derailleur is connected. The other end of the resistance is connected to a solder pad to which a first lead is soldered. The second strand is electrical conductive cover part of the encapsulated rear derailleur soldered.
the ceramic carrier cannot be mechanically loaded, Hairline cracks occur during transport as bulk goods Incoming inspection can only be recognized with a microscope can. Loosen by soldering the wire to the ceramic carrier often the conductor tracks. Because of this problem is a increased control and inspection effort required, the pricing of the product to the appropriate height. Another The disadvantage is the low pressure stability of this construction, those for wrapping in transformer windings or electric motors is not suitable.
this well-known switch is widely used, because the application of a resistor with a defined resistance value a well-mastered technique on a ceramic carrier is, here e.g. Thick film resistors used.
this object is achieved according to the invention solved in that in the housing geometrically and electrically between the switching mechanism and one of the two electrodes a series resistor is arranged.
the inventor of the present application has recognized that that it is not necessary to drop the series resistance below to arrange the housing of the switch on a separate carrier, but that this is both electrical and geometric placed between one of the electrodes and the switching mechanism can be.
the series resistance is thus from the outside no longer accessible, i.e. protected from mechanical influences.
Another advantage is that the previous External connections are retained, so that separate soldering measures as in the prior art for the external connections not required are.
the switch comprises a ceramic support which points towards the switching mechanism is arranged on one of the two electrodes and the series resistor wearing one end with the electrode and another End is connected to a mating contact for the rear derailleur.
the first housing part is made of insulating material is made in which the first electrode cannot be lost is held, the first electrode one on the Rear derailleur to be facing flat surface on which the ceramic carrier attached and with the series resistor electrically connected is.
the ceramic carrier has at least one preferably laser-perforated through hole, through which he soldered to the electrode and the Series resistor is electrically connected to this.
the first electrode is in the first Housing part by casting or injection molding during manufacture this housing part is held so captive, that it is an integral part of this housing part, wherein further preferably the second housing part is an electrically conductive Bottom part is, its inner bottom as a second electrode works.
the switching mechanism is electrically conductive spring washer, which includes a movable contact part wearing and working against a bimetallic snap disc, which sits approximately in the middle on the movable contact part, whereby the edge of the spring washer is supported on one electrode and the movable contact part against the other electrode presses when the rear derailleur is below its response temperature located.
Fig. 1 is a schematic side view of a new one Switch 10 shown, the temperature-dependent switching mechanism 11 comprises, which is arranged in a housing 12.
the housing 12 has an electrically conductive bottom part 14 and a cup-like cover part 15 made of insulating material, which contains an annular space 16, in which the temperature-dependent Switch 11 is inserted.
the switching mechanism 11 comprises a movable contact part 17 which is supported by a spring washer 18 and a bimetallic snap disk 19 is laid.
the electrically conductive bottom part 14 forms with its inside an electrode 20 on which the spring washer 18 with supports its edge 21.
the bottom part 14 goes integrally into one first external connection 22, which is thus electrically conductive with the spring washer 18 and thus with the movable contact part 17 is connected.
a second outer connection 23 of the switch 10 is integral with an overmolded electrode 24 connected to an inner Bottom 15a of the lid part 15 is arranged.
the cover part 15 is sprayed around the electrode 24 so that it cannot be lost is embedded in the cover part 15.
the arrangement is taken so that the electrode 24 one on the switching mechanism 11 has plane surface 25 to be pointed, on which a ceramic disc 26 is arranged, which has a fixed counter contact 27 for the movable contact part 17 carries.
the ceramic disk 26 has laser-perforated passages 28, via which they are connected to the electrode 24 with the aid of soldering points 29 is attached. In a manner to be described, between the Soldering points 29 and the counter contact 27 a series resistance arranged.
This arrangement means that it lies between the two external connections 22, 23 a series connection of switching mechanism 11 and series resistance.
the bimetal snap disk 19 In the switching state shown in Fig. 1 the bimetal snap disk 19 is below its switching temperature, so that the spring washer 18 the movable contact part 17 presses against the fixed counter contact 27, so that the Switchgear 10 flowing operating current of a to be protected electrical device flows through the series resistor and heats up.
the Ohmic heat developed in the series resistor which is shown in Fig. 1 force-free bimetallic snap disk 19 to the extent that it is against the force of the spring washer 18, the movable contact part 17 of the fixed counter contact 27 lifts and thus interrupts the current.
the electrode 24 with its flat surface 25 points into an annular space 30 into which after the injection the electrode 24 into the cover part 15, the ceramic disk 26 is inserted, whereupon through the soldering points 29 both a mechanical as well as an electrical connection to the Electrode 24 is made. Then the rear derailleur 11 in the annular space 16 is inserted, whereupon the base part 14 is then placed and by an edge 31 and holding pin 32 on the cover part 15 is attached.
FIG. 2 shows a top view of the switch from FIG. 1, where a series resistor 34 is now also indicated schematically is that via a conductor track 35 with the fixed counter contact 27 and via conductor tracks 36 and 37 with the soldering points 29 is electrically connected.
the series resistor 34 is a usual thick-film resistance, which is known and good mastered techniques arranged on the ceramic disc 26 , its resistance value being extremely precise as needed can be set, whereby the switch 10 leading operating current can be precisely selected.
the Ceramic disc 26 arranged series resistor 34 both electrically as well as geometrically between the electrode 24 and the Switch mechanism 11 is arranged inside the housing 12.

Landscapes

Physics & Mathematics (AREA)
Thermal Sciences (AREA)
Thermally Actuated Switches (AREA)
Amplifiers (AREA)
Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Fire-Detection Mechanisms (AREA)

EP98117532A 1997-11-04 1998-09-16 Interrupteur avec un mécanisme de commutation sensible à la température Expired - Lifetime EP0915491B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE19748589		1997-11-04
DE19748589A DE19748589C2 (de)	1997-11-04	1997-11-04	Schalter mit einem temperaturabhängigen Schaltwerk

Publications (3)

Publication Number	Publication Date
EP0915491A2 true EP0915491A2 (fr)	1999-05-12
EP0915491A3 EP0915491A3 (fr)	1999-12-08
EP0915491B1 EP0915491B1 (fr)	2006-11-15

Family

ID=7847514

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP98117532A Expired - Lifetime EP0915491B1 (fr)	1997-11-04	1998-09-16	Interrupteur avec un mécanisme de commutation sensible à la température

Country Status (6)

Country	Link
US (1)	US6091316A (fr)
EP (1)	EP0915491B1 (fr)
AT (1)	ATE345575T1 (fr)
AU (1)	AU738423B2 (fr)
DE (2)	DE19748589C2 (fr)
ES (1)	ES2276442T3 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2001031749A2 (fr)	1999-10-27	2001-05-03	Thermik Gerätebau GmbH	Borne de raccord
CN1428806A (zh) *	2001-12-07	2003-07-09	古河电气工业株式会社	热保护器
DE102004036117B4 (de) *	2004-07-24	2006-12-14	Tmc Sensortechnik Gmbh	Thermobimetallschalter
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
GB2481240B (en) *	2010-06-17	2017-04-12	Otter Controls Ltd	Thermally responsive electric switches
DE102011107110B4 (de)	2011-07-12	2013-04-18	Marcel P. HOFSAESS	Verfahren zum Umgeben eines elektrischen Bauteils mit einem Schutzgehäuse sowie elektrisches Bauteil mit einem Schutzgehäuse
WO2018018131A1 (fr) *	2016-07-29	2018-02-01	Karle Innovation Ltd.	Équipement électrique à compartiment et câblage additionnels pour prendre en compte les limitations de température de conducteurs connectés
DE102023102302B3 (de)	2023-01-31	2024-03-28	Marcel P. HOFSAESS	Temperaturabhängiger Schalter
DE102023102301B3 (de)	2023-01-31	2024-03-28	Marcel P. HOFSAESS	Temperaturabhängiger Schalter und Verfahren zu dessen Herstellung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0756301A2 (fr) *	1995-07-26	1997-01-29	Thermik Gerätebau GmbH	Thermostat
DE19609310A1 (de) *	1996-03-09	1997-09-11	Thermik Geraetebau Gmbh	Schalter mit einem temperaturabhängigen Schaltwerk

Family Cites Families (8)

* 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
DE2759251B2 (de) *	1977-12-31	1981-04-23	Behr-Thomson Dehnstoffregler Gmbh, 7014 Kornwestheim	Zweistufen-Temperaturschalter
DE8806648U1 (de) *	1988-05-20	1989-06-22	Hofsäss, Peter, 7530 Pforzheim	Temperaturschalteinrichtung
DE4142716C2 (de) *	1991-12-21	1997-01-16	Microtherm Gmbh	Thermoschalter
JPH05282977A (ja) *	1992-03-30	1993-10-29	Texas Instr Japan Ltd	過電流保護装置
DE9214940U1 (de) *	1992-11-03	1992-12-17	Thermik Geraetebau Gmbh, 7530 Pforzheim	Temperaturwächter
DE4428226C1 (de) *	1994-08-10	1995-10-12	Thermik Geraetebau Gmbh	Temperaturwächter
DE19604939C2 (de) *	1996-02-10	1999-12-09	Marcel Hofsaes	Schalter mit einem temperaturabhängigen Schaltwerk

1997
- 1997-11-04 DE DE19748589A patent/DE19748589C2/de not_active Expired - Fee Related
1998
- 1998-09-16 AT AT98117532T patent/ATE345575T1/de active
- 1998-09-16 DE DE59813802T patent/DE59813802D1/de not_active Expired - Lifetime
- 1998-09-16 ES ES98117532T patent/ES2276442T3/es not_active Expired - Lifetime
- 1998-09-16 EP EP98117532A patent/EP0915491B1/fr not_active Expired - Lifetime
- 1998-10-30 US US09/183,534 patent/US6091316A/en not_active Expired - Fee Related
- 1998-11-02 AU AU90526/98A patent/AU738423B2/en not_active Ceased

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0756301A2 (fr) *	1995-07-26	1997-01-29	Thermik Gerätebau GmbH	Thermostat
DE19609310A1 (de) *	1996-03-09	1997-09-11	Thermik Geraetebau Gmbh	Schalter mit einem temperaturabhängigen Schaltwerk

Also Published As

Publication number	Publication date
AU9052698A (en)	1999-05-27
US6091316A (en)	2000-07-18
EP0915491B1 (fr)	2006-11-15
DE19748589C2 (de)	1999-12-09
EP0915491A3 (fr)	1999-12-08
AU738423B2 (en)	2001-09-20
DE59813802D1 (de)	2006-12-28
ES2276442T3 (es)	2007-06-16
DE19748589A1 (de)	1999-05-20
ATE345575T1 (de)	2006-12-15

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Publication	Publication Date	Title
EP0920044B1 (fr)	2004-06-16	Interrupteur avec un mécanisme de commutation sensible à la température
DE19827113C2 (de)	2001-11-29	Temperaturabhängiger Schalter mit Stromübertragungsglied
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