EP0313674A1 - Thermo-rupteur bimétallique - Google Patents

Thermo-rupteur bimétallique Download PDF

Info

Publication number
EP0313674A1
EP0313674A1 EP87115719A EP87115719A EP0313674A1 EP 0313674 A1 EP0313674 A1 EP 0313674A1 EP 87115719 A EP87115719 A EP 87115719A EP 87115719 A EP87115719 A EP 87115719A EP 0313674 A1 EP0313674 A1 EP 0313674A1
Authority
EP
European Patent Office
Prior art keywords
switch according
bimetallic switch
contact
bimetallic
pin
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
EP87115719A
Other languages
German (de)
English (en)
Other versions
EP0313674B1 (fr
Inventor
Hans Peter Bojer
Wolfgang Dipl.-Ing. Geiger
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.)
Temtech-Temperatur-Technik Hans Peter Bojer
Original Assignee
Temtech-Temperatur-Technik Hans Peter Bojer
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 Temtech-Temperatur-Technik Hans Peter Bojer filed Critical Temtech-Temperatur-Technik Hans Peter Bojer
Priority to AT87115719T priority Critical patent/ATE84911T1/de
Priority to EP87115719A priority patent/EP0313674B1/fr
Priority to DE8787115719T priority patent/DE3783769D1/de
Priority to DE8714253U priority patent/DE8714253U1/de
Publication of EP0313674A1 publication Critical patent/EP0313674A1/fr
Application granted granted Critical
Publication of EP0313674B1 publication Critical patent/EP0313674B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

Definitions

  • the invention relates to a bimetallic switch, with a closed housing with a cover and a trough-shaped lower part, in which a contact lug with a fixed contact and a strip-shaped contact spring with a movable mating contact as well as an arched bimetallic snap disk, which is opposite the contact spring, are arranged .
  • the proposed bimetallic switch is widely used as a temperature monitor for electrical devices of all kinds - in particular domestic appliances - with the task of interrupting a circuit when a predetermined temperature is reached.
  • Thermal bimetallic switches are known in a wide variety of designs and are manufactured in large quantities. With regard to operational safety, high demands are placed on these switches on the one hand and they have to be very robust, on the other hand, however, their manufacturing costs should be low. Known thermal bimetallic switches are designed to be reliable, but are too expensive.
  • thermobimetal switch with a closed housing with a cover and a lower part, in which a contact lug with a fixed contact and a strip-shaped contact spring with a movable mating contact, as well as a domed thermobimetal snap disk, which is opposite the contact spring, are arranged, started and solved the problem in that a pin protrudes on the inside of the lower part of the housing, that the bimetallic snap disk sits loosely in the lower part, and that the bimetallic snap disk lies with the center of its concave side above the pin.
  • a bimetallic switch designed in this way is very easy to manufacture, assembly can be particularly quick and its operational reliability is high.
  • the pin on which the bimetallic snap disk rests is expediently formed on the inside of the lower part.
  • the lower part is advantageously elongated, rectangular and has two between one floor parallel side walls and an end wall connecting them.
  • the housing advantageously consists of a dark-colored, thermoplastic material, the heat capacity of which is low.
  • the bimetallic snap disk has a rectangular layout. This floor plan is easy to produce and gives favorable snap properties.
  • the contact tab is attached to the bottom of the lower part.
  • the contact lug is expediently inserted with a holding hole on a holding pin which is provided on the bottom of the lower part.
  • the contact lug is expediently riveted to the holding pin by thermal deformation of its head.
  • the contact spring with a fastening hole is placed on a fastening pin which is provided on the bottom of the lower part of the housing. This measure allows easy assembly.
  • the latter is riveted to the fastening pin, which in turn occurs through thermal deformation of the free end thereof.
  • the contact spring is expediently bent twice at right angles next to the fastening pin.
  • the inside of the cover advantageously carries a fitting bolt which engages in a fitting hole in the lower part of the housing. This clearly defines the mutual position of the cover and base.
  • the cover At the end of the housing and for additional holding of the contact lug and the contact spring, the cover has a wall part on the underside, which engages in addition to the fastening pin between the two side walls of the lower part.
  • Two opposite shoulders can be provided in the lower part of the housing. These shoulders serve to guide the contact lug and the contact spring when inserting it into the lower part during assembly.
  • the bottom of the lower part of the housing expediently has a slope. This slope serves to increase the mechanical strength of the housing 1 .
  • the thermal bimetallic switch shown in the drawing essentially consists of a housing 1 closed on all sides with a lower part 2 and a cover 3 , a contact lug 4 , a thermal bimetallic snap disk 5 and a contact spring 6 .
  • the housing 1 produced from a dark - preferably black - colored plastic by compression molding has the shape of an elongated prism with a polygonal base and is closed on all sides.
  • the housing consists of the lower part 2 and the cover 3 .
  • the lower part 2 has the shape of an elongated, rectangular, lower trough and has two parallel side walls 7 and 8, which are connected to one another by an end wall 9.
  • a cylindrical pin 12 protrudes on the inside.
  • This pin 12 has a spherical surface and is on the inside 13 of the lower part 2 - Formed on the slope 11 of the floor 10 - and it is perpendicular to the floor 10.
  • a cylindrical retaining pin 14 is provided, which is molded onto the bottom 10. Furthermore, a cylindrical fastening pin 15 is arranged on the bottom 10 on the slope 11, which is integrally formed on the slope 11.
  • two shoulders 16 and 17 are formed on the end wall 9, which lie opposite one another and which form an arcuate recess 18 in plan.
  • the lid 3 of the housing 1 has an elongated rectangular plan, which corresponds to that of the bottom 10. This cover 3 closes the lower part 2 and is welded all around at its outer edge to the upper edges of the side walls 7 and 8 and the end wall 9.
  • the lid 3 carries on its underside 19 a wall part 20 which is L-shaped in plan and engages in a form-fitting manner next to the fastening pin 15 and between the two side walls 7 and 8 of the lower part 2 .
  • the lid 3 carries a cylindrical fitting bolt 21 inside, which engages in a fitting hole 22 of the lower part 2 , which is provided behind the shoulder 17.
  • the contact tab 4 is made of copper, brass or nickel silver and is just on the inside 13 of the bottom 10 of the lower part 2 and it is attached there.
  • This contact tab 4 has a long, straight leg 24, which is also in a straight, at an obtuse angle bent leg 25 merges, the end 26 protrudes into the recess 18.
  • the contact tab 4 has a holding hole 27, with which it is inserted on the holding pin 14 of the lower part 2 and is riveted by thermal deformation of the free end of the holding pin 14.
  • a small disk made of silver or another contact material is plated as a fixed contact 28.
  • the bimetallic snap disk 5 has an essentially rectangular plan with two parallel long sides 29 and 30 and two narrow sides 31 and 32 of weakly curved design; this bimetallic snap disk 5 is slightly curved and it jumps around under heating at an intended temperature.
  • the bimetallic snap disk 5 is loosely inserted into the lower part 2 between the side walls 7 and 8, the shoulders 17 and 18 and the fastening pin 15 and is opposite the contact spring 6 .
  • the bimetallic snap disk 5 is thus between the contact lug 4 and the contact spring 6 .
  • the bimetallic snap disk 5 With the center of its concave side 33, the bimetallic snap disk 5 rests on the pin 12. If the bimetallic snap disk 5 snaps due to an increase in temperature, the concave side 33 becomes convex and the edge of the bimetallic snap disk 5 opposite the recess 18 pushes the prestressed contact spring 6 up, so that the contact is opened.
  • the contact spring 6 made of a resilient material is slightly trapezoidal in plan formed and it merges into a narrow connecting lug 34. At its free end 35, the contact spring 6 carries a counter contact 36, which is riveted and cooperates with the fixed contact 28. The end 35 protrudes into the recess 18 of the lower part 2 .
  • the contact spring 6 is bent twice at right angles next to the mounting pin 15 in opposite directions and it carries a mounting hole 37 with which it is inserted on the mounting pin 15. Due to thermal deformation of the end 38 of the fastening pin 15, the contact spring 6 is riveted to the lower part 2 of the housing 1 .
  • the copper conductors 39 of insulated, electrical feed strands 40 are fastened by soldering or welding.
  • the cavity between the ends of the two side walls 7 and 8 of the lower part 2 and the outside of the wall part 20 of the cover 3 is filled with an electrically insulating, heat-insensitive casting compound 41.
  • the assembly of the proposed bimetallic switch is simply in front of you.
  • the contact lug 4 , the bimetallic snap disk 5 and the contact spring 6 are inserted one after the other and one above the other in the lower part 2 of the housing 1 , the ends of the holding pin 14 and the fastening pin 15 being thermally deformed using a tool via the contact lug 4 and the contact spring 6 .
  • the lid 3 is put on and welded or glued all around to the lower part 2 , finally the casting compound 41 is filled.

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Thermally Actuated Switches (AREA)
EP87115719A 1987-10-27 1987-10-27 Thermo-rupteur bimétallique Expired - Lifetime EP0313674B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT87115719T ATE84911T1 (de) 1987-10-27 1987-10-27 Thermobimetallschalter.
EP87115719A EP0313674B1 (fr) 1987-10-27 1987-10-27 Thermo-rupteur bimétallique
DE8787115719T DE3783769D1 (de) 1987-10-27 1987-10-27 Thermobimetallschalter.
DE8714253U DE8714253U1 (de) 1987-10-27 1987-10-27 Thermobimetallschalter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP87115719A EP0313674B1 (fr) 1987-10-27 1987-10-27 Thermo-rupteur bimétallique
DE8714253U DE8714253U1 (de) 1987-10-27 1987-10-27 Thermobimetallschalter

Publications (2)

Publication Number Publication Date
EP0313674A1 true EP0313674A1 (fr) 1989-05-03
EP0313674B1 EP0313674B1 (fr) 1993-01-20

Family

ID=25952148

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87115719A Expired - Lifetime EP0313674B1 (fr) 1987-10-27 1987-10-27 Thermo-rupteur bimétallique

Country Status (2)

Country Link
EP (1) EP0313674B1 (fr)
DE (1) DE8714253U1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19547526A1 (de) * 1994-12-09 1996-06-13 Uchiya Thermostat Thermostat
EP0773595A1 (fr) * 1995-10-09 1997-05-14 Wako Electronics Co., Ltd. Dispositif de sécurité utilisable dans une batterie secondaire
DE19546005A1 (de) * 1995-12-09 1997-06-12 Hofsaes Marcel Schalter mit einem temperaturabhängigen Schaltwerk
EP0858090A2 (fr) * 1997-02-11 1998-08-12 Thermik Gerätebau GmbH Thermostat avec un dispositif interrupteur à bimétal
US6633222B2 (en) * 2000-08-08 2003-10-14 Furukawa Precision Engineering Co., Ltd. Battery breaker

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8801497U1 (de) * 1988-02-06 1988-07-07 Limitor GmbH, 7530 Pforzheim Bimetalltemperaturschalter

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US332290A (en) * 1885-12-15 scheurman
US3322920A (en) * 1963-09-09 1967-05-30 Therm O Disc Inc Thermostatic control having magnified movement of snap member
DE7638018U1 (de) * 1976-12-04 1977-04-28 Eberle Werke Kg, 8500 Nuernberg Elektrisches Schaltgerät
DE3141226A1 (de) * 1980-12-10 1982-06-24 Matsushita Electric Works Ltd., Kadoma, Osaka "thermoschalter"
EP0058372A1 (fr) * 1981-02-11 1982-08-25 Limitor AG Interrupteur thermique à élément bimétallique
EP0126957A2 (fr) * 1983-05-27 1984-12-05 Microtherm GmbH Interrupteur thermostatique

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US332290A (en) * 1885-12-15 scheurman
US3322920A (en) * 1963-09-09 1967-05-30 Therm O Disc Inc Thermostatic control having magnified movement of snap member
DE7638018U1 (de) * 1976-12-04 1977-04-28 Eberle Werke Kg, 8500 Nuernberg Elektrisches Schaltgerät
DE3141226A1 (de) * 1980-12-10 1982-06-24 Matsushita Electric Works Ltd., Kadoma, Osaka "thermoschalter"
EP0058372A1 (fr) * 1981-02-11 1982-08-25 Limitor AG Interrupteur thermique à élément bimétallique
EP0126957A2 (fr) * 1983-05-27 1984-12-05 Microtherm GmbH Interrupteur thermostatique

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19547526C2 (de) * 1994-12-09 2000-01-05 Uchiya Thermostat Bimetalltemperaturschalter
DE19547526A1 (de) * 1994-12-09 1996-06-13 Uchiya Thermostat Thermostat
EP0773595A1 (fr) * 1995-10-09 1997-05-14 Wako Electronics Co., Ltd. Dispositif de sécurité utilisable dans une batterie secondaire
US5766793A (en) * 1995-10-09 1998-06-16 Wako Electronics Co., Ltd. Safety device for use in secondary battery
DE19546005C2 (de) * 1995-12-09 1999-07-08 Hofsaes Marcel Schalter mit einem temperaturabhängigen Schaltwerk
DE19546005A1 (de) * 1995-12-09 1997-06-12 Hofsaes Marcel Schalter mit einem temperaturabhängigen Schaltwerk
EP0778599A3 (fr) * 1995-12-09 1998-05-27 Marcel Hofsäss Interrupteur avec un mécanisme de commutation sensible à la température
US5867084A (en) * 1995-12-09 1999-02-02 Hofsaess; Marcel Switch having a temperature-dependent switching mechanism
DE19705154A1 (de) * 1997-02-11 1998-08-20 Thermik Geraetebau Gmbh Temperaturabhängiger Schalter mit einem Bimetall-Schaltwerk
DE19705154C2 (de) * 1997-02-11 1999-06-02 Thermik Geraetebau Gmbh Temperaturabhängiger Schalter mit einem Bimetall-Schaltwerk
EP0858090A3 (fr) * 1997-02-11 1999-05-26 Thermik Gerätebau GmbH Thermostat avec un dispositif interrupteur à bimétal
EP0858090A2 (fr) * 1997-02-11 1998-08-12 Thermik Gerätebau GmbH Thermostat avec un dispositif interrupteur à bimétal
US6064295A (en) * 1997-02-11 2000-05-16 Thermik Geratebau Gmbh Temperature-dependent switch having a bimetallic switching mechanism
US6633222B2 (en) * 2000-08-08 2003-10-14 Furukawa Precision Engineering Co., Ltd. Battery breaker

Also Published As

Publication number Publication date
DE8714253U1 (de) 1987-12-17
EP0313674B1 (fr) 1993-01-20

Similar Documents

Publication Publication Date Title
DE2500364C2 (de) Miniatur-Stecksicherung
DE602005003911T2 (de) Verbindungsanordnung für einen Kühlschrankkompressor
DE3340939C2 (de) Thermische Sicherung
DE4411187A1 (de) Stromleitungs-Verbinder
EP0858090B1 (fr) Thermostat avec un dispositif interrupteur à bimétal
DE3735334A1 (de) Thermisch gesteuerte elektrische schalteinrichtung
DE2831198A1 (de) Bimetalltemperaturschalter
DE7425172U (de) Verzögert ansprechendes Relais
DE3335934C2 (fr)
DE3104827C2 (fr)
EP0313674A1 (fr) Thermo-rupteur bimétallique
DE19546005C2 (de) Schalter mit einem temperaturabhängigen Schaltwerk
DE4010121C2 (fr)
EP0655169B2 (fr) Porte-balai pour moteurs electriques
CH662673A5 (de) Sicherungs-reihenklemme.
DE2458991B2 (de) Bürstenanordnung für einen Miniaturmotor
DE3005441C2 (fr)
CH650358A5 (en) Push button with a snap-action effect
DE3120517C2 (fr)
EP0162940B1 (fr) Interrupteur de protection contre les surchages
DE2916664A1 (de) Waermeschutzschalter
AT214543B (fr)
DE2719329C2 (de) Bimetallschutzschalter
DE602004005160T2 (de) Elektrischer strahlungsheizer
EP0168378A2 (fr) Interrupteur thermique avec un détecteur de température formé par un disque bimétallique à action brusque

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19891020

17Q First examination report despatched

Effective date: 19910909

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19930120

Ref country code: NL

Effective date: 19930120

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19930120

Ref country code: BE

Effective date: 19930120

REF Corresponds to:

Ref document number: 84911

Country of ref document: AT

Date of ref document: 19930215

Kind code of ref document: T

ITF It: translation for a ep patent filed
ET Fr: translation filed
REF Corresponds to:

Ref document number: 3783769

Country of ref document: DE

Date of ref document: 19930304

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19921204

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19930501

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19931031

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19981015

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19981019

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19981023

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19981031

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19981230

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991027

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991027

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991031

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991031

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19991027

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000801

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051027