EP0209832A2 - Disjoncteur de protection à courant excessif actionné par un bouton-poussoir - Google Patents

Disjoncteur de protection à courant excessif actionné par un bouton-poussoir Download PDF

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Publication number
EP0209832A2
EP0209832A2 EP86109678A EP86109678A EP0209832A2 EP 0209832 A2 EP0209832 A2 EP 0209832A2 EP 86109678 A EP86109678 A EP 86109678A EP 86109678 A EP86109678 A EP 86109678A EP 0209832 A2 EP0209832 A2 EP 0209832A2
Authority
EP
European Patent Office
Prior art keywords
contact arm
bimetallic
fixed contact
bimetal
housing
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
EP86109678A
Other languages
German (de)
English (en)
Other versions
EP0209832A3 (en
EP0209832B1 (fr
Inventor
Poensgen Gmbh Ellenberger
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.)
Ellenberger and Poensgen GmbH
Original Assignee
Ellenberger and Poensgen 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
Application filed by Ellenberger and Poensgen GmbH filed Critical Ellenberger and Poensgen GmbH
Priority to AT86109678T priority Critical patent/ATE87765T1/de
Publication of EP0209832A2 publication Critical patent/EP0209832A2/fr
Publication of EP0209832A3 publication Critical patent/EP0209832A3/de
Application granted granted Critical
Publication of EP0209832B1 publication Critical patent/EP0209832B1/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
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/22—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electrothermal release and no other automatic release
    • H01H73/30—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electrothermal release and no other automatic release reset by push-button, pull-knob or slide
    • H01H73/303—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electrothermal release and no other automatic release reset by push-button, pull-knob or slide with an insulating body insertable between the contacts when released by a bimetal element
    • 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
    • H01H71/08—Terminals; Connections
    • H01H2071/088—Terminals for switching devices which make the devices interchangeable, e.g. with fuses

Definitions

  • the invention relates to an overcurrent protection switch with bimetallic release for insertion into a flat fuse base with the features specified in the preamble of claim 1.
  • This lateral offset makes it possible for the bimetallic snap disk arranged in between to lie approximately in the main plane of extension of the bimetallic contact arm and, at the same time, to overlap the fixed contact arm.
  • the snap movement can therefore take place on both sides of the main extension plane of the bimetal contact arm.
  • the bimetal snap disk is attached on one side. It stretches transverse to the direction of insertion of the contact arms and overlaps with their fastening end the opposite pivot end of the free end of the fixed contact arm. With its bimetallic contact attached to the swivel end, the bimetallic snap disc rests on the fixed contact in the unheated rest position and pretension.
  • a disadvantage of the known overcurrent protection switches of this type is that the two contact arms are guided approximately equally through the parting joint between the two housing half-shells from which the switch housing is formed.
  • the contact arms are located in special recesses in the housing half-shells and are fixed, for example, by a pin-hole connection.
  • the rigidity of this fixation is not very great and does not sufficiently stabilize the relative position of the two contact arms to one another. Due to the relatively high manufacturing tolerances and the two-part design of the housing, a mutual displacement of the contact arms is easily possible. As a result, the tripping characteristic of such an overcurrent protection switch is greatly influenced. In practice, this means a high reject rate and a relatively wide spread of the triggering time.
  • the invention has for its object to keep the tripping characteristic of such switches within narrow tolerance ranges and to make the switch in its essential functional elements easily adjustable after assembly.
  • the bimetallic and fixed contact arm with its central region in a form-fitting manner from a dimensionally stable, sprayable or pourable Plastic insulating material manufactured base are embedded and that the bimetallic contact arm has a weak point at its interior exit point from the base as a desired adjustment bending point.
  • This construction ensures on the one hand that the bimetal and fixed contact arms are immovably fixed against each other. This is an important criterion for ensuring that a special tripping characteristic is maintained during the entire operating time of the switch.
  • the bimetal contact arm can be easily bent in the area of the weak point by means of an appropriate adjusting device.
  • the switch according to the invention it is therefore possible with simple means to subsequently adjust the target tolerance range of its tripping characteristic and to maintain it reliably over the entire operating time. Since the weak point of the bimetallic contact arm lies at its point of exit from the base, the greatest possible lever arm is provided for an adjustment displacement of the contact arm end. This can therefore be carried out in a particularly fine dosage. Last but not least, the circuit breaker according to the invention is particularly mechanically stable.
  • the weak point on the bimetal contact arm is an approximately perpendicular to its main extension plane punch hole. In this way, the desired adjustment bending point can be introduced in the same operation as the production of the stamped part itself and torsion of the free end of the bimetal contact arm about its longitudinal axis can be avoided during the adjustment process.
  • the adjustment target bending point is determined more precisely and the adjustment process is even more reproducible.
  • the tendency of the bimetal contact arm, which already exists fundamentally due to the weak point, to bend itself at the weak point, is further reinforced by the fact that the fulcrum of the free end of the bimetal contact arm, which acts as a one-armed lever, is located at the weak point.
  • the embedding of the bimetallic contact arm in the base material and thus its stability is further improved by the characterizing feature of claim 7.
  • the punching hole is partially penetrated by base material, which effectively prevents a longitudinal axial displacement of the bimetal contact arm relative to the base.
  • the switch according to the invention can be made particularly space-saving. It is therefore also suitable as a replacement for simple flat fuses.
  • the base takes on the additional function of a wall part of the switch housing.
  • the overcurrent protection switch which can be actuated by the push button 1 has a housing composed of a cap 2 and a base 3. Both parts are made of a sprayable or pourable, electrically insulating material.
  • the bimetallic contact arm 4 and the fixed contact arm 5 are embedded in the approximately cuboid base 3.
  • Both arms 4, 5 consist of an elongated, flat cuboid metal stamped part.
  • the main planes of extension of the insertion ends 6, 7 of the contact arms 4, 5 leading out of the housing are the same. The latter are parallel to each other and are designed as flat tongues.
  • the two contact arms 4, 5 each have an opposite outward bend 9, 10 (FIG. 5).
  • the main planes of extension of the inner free ends 11, 12 of the contact arms 4, 5 are thus parallel to each other at a distance 19.
  • the bend 9 of the bimetallic contact arm 4 lies in the interior of the housing, while the bend 10 of the fixed contact arm 5 is arranged in the area encapsulated by the base material.
  • An oval-shaped bimetal snap disk 13 is fastened on one side to the free end 11 of the bimetal contact arm 4 inside the housing. It extends transversely to the direction of the contact arms 4, 5 in the direction of the fixed contact arm 5. Its swiveling end 14 has the bimetallic contact 15, which is thus movable. This is opposite the fixed contact 16 of the overcurrent protection switch attached to the free end 12 of the fixed contact arm 5. The swivel end 14 overlaps the free end 12 of the fixed contact arm 5 and is in the rest position of the switch with its bimetallic contact 15 on the fixed contact 16 under prestress.
  • the bimetallic contact arm 4 At its housing-internal exit point 17 from the base 3, the bimetallic contact arm 4 has the punched hole 18, which penetrates it perpendicularly to its main direction of extension. This creates a weak point, which acts as an adjustment target bending point if readjustment proves to be necessary.
  • the weak point In the modified form of the weak point according to FIG. 6, it is formed by two lateral notches 29 in the form of a half-hole each.
  • the bimetallic contact arm 4 In its area surrounded by the base material, the bimetallic contact arm 4 has the step-like narrowing 21 (FIG. 5), which acts exactly like the bend of the fixed contact arm 5 to prevent the contact arm from moving within the embedding.
  • the circular punched hole 18 is located exactly at the exit point 17 of the bimetal contact arm 4 from the base 3. As a result, the punched hole 18 is partially penetrated by base material. There is an additional fixation effect for the bimetal contact arm 4 and a clean pivot point for its free end 11 during the adjustment process.
  • the push button 1 which can be moved in the insertion direction 22, is arranged to switch on the switch.
  • This is essentially L-shaped, the free end of its L-vertical leg 23 reaching through a recess 24 in the ceiling 25 of the cap 2.
  • This is supported on the top of the base 3 and acts on the push button 1 against the insertion direction 22.
  • the L-horizontal leg 28 of the push button 1 can be pushed out against the pressure of the compression spring 27 from the space between the contacts 15, 16 and thereby causes a contact closure by hand.

Landscapes

  • Thermally Actuated Switches (AREA)
  • Breakers (AREA)
  • Keying Circuit Devices (AREA)
EP86109678A 1985-07-26 1986-07-15 Disjoncteur de protection à courant excessif actionné par un bouton-poussoir Expired - Lifetime EP0209832B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86109678T ATE87765T1 (de) 1985-07-26 1986-07-15 Druckknopfbetaetigter ueberstromschutzschalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3526785 1985-07-26
DE3526785A DE3526785C1 (de) 1985-07-26 1985-07-26 Druckknopfbetaetigter UEberstromschutzschalter

Publications (3)

Publication Number Publication Date
EP0209832A2 true EP0209832A2 (fr) 1987-01-28
EP0209832A3 EP0209832A3 (en) 1989-07-26
EP0209832B1 EP0209832B1 (fr) 1993-03-31

Family

ID=6276846

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86109678A Expired - Lifetime EP0209832B1 (fr) 1985-07-26 1986-07-15 Disjoncteur de protection à courant excessif actionné par un bouton-poussoir

Country Status (6)

Country Link
US (1) US4667175A (fr)
EP (1) EP0209832B1 (fr)
JP (1) JPH0721989B2 (fr)
AT (1) ATE87765T1 (fr)
CA (1) CA1257314A (fr)
DE (3) DE8521611U1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2605798A1 (fr) * 1986-10-27 1988-04-29 Dav Disjoncteur plat a bilame
US5089799A (en) * 1991-01-25 1992-02-18 Sorenson Richard W Thermal switch/breaker
US5167535A (en) * 1991-02-14 1992-12-01 Alert Safety Lite Products Co., Inc. Female electrical plug with overload protection
US5327952A (en) * 1991-03-08 1994-07-12 The Goodyear Tire & Rubber Company Pneumatic tire having improved wet traction
US5358022A (en) * 1991-03-08 1994-10-25 The Goodyear Tire & Rubber Company Pneumatic tire having improved wet traction
IT1255935B (it) * 1992-10-29 1995-11-17 Ausimont Spa Filato multifilamento di polimeri a base di tetrafluoroetilene e relativo processo di preparazione.
DE19856707A1 (de) * 1998-12-09 2000-06-21 Ellenberger & Poensgen Schutzschalter zur Absicherung von Stromkreisen
US6707368B2 (en) * 2001-07-18 2004-03-16 Cooper Technologies Company Manually trippable circuit breaker
DE10348864A1 (de) * 2003-10-21 2005-06-02 Ellenberger & Poensgen Gmbh Schutzschalter mit einer Bimetallschnappscheibe
DE202004008338U1 (de) * 2004-05-25 2005-10-06 Ellenberger & Poensgen Gmbh Schutzschalter zur Absicherung eines Stromkreises
DE102007052896A1 (de) * 2007-11-07 2009-05-14 Marquardt Gmbh Elektrischer Schalter
DE102008049507A1 (de) 2008-09-29 2010-04-01 Ellenberger & Poensgen Gmbh Miniatur-Schutzschalter
US10796872B1 (en) * 2019-09-01 2020-10-06 Kuoyuh W.L. Enterprise Co., Ltd. Vehicle circuit breaker

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1924701A1 (de) * 1968-05-15 1969-11-27 Otter Controls Ltd Thermisch ansprechender Schnappschalter
GB1200477A (en) * 1966-12-30 1970-07-29 Texas Instruments Inc Thermally responsive switch
DE2646840A1 (de) * 1976-10-16 1978-04-20 Bbc Brown Boveri & Cie Elektrischer schutzschalter
DE3342144A1 (de) * 1983-11-22 1985-05-30 Ellenberger & Poensgen Gmbh, 8503 Altdorf Druckknopfbetaetigter ueberstromschutzschalter
DE8522254U1 (de) * 1985-08-02 1985-09-26 Ellenberger & Poensgen Gmbh, 8503 Altdorf Überstromschutzschalter

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2487683A (en) * 1946-05-10 1949-11-08 Metals & Controls Corp Snap-acting springing and thermostatic plate
US3753195A (en) * 1972-09-20 1973-08-14 Gen Electric Thermostatic switch
JPS5577354U (fr) * 1978-11-22 1980-05-28
US4365228A (en) * 1981-04-03 1982-12-21 Robertshaw Controls Company Thermostat construction having a one piece plunger with a wing-like section and method of making the same
US4363016A (en) * 1981-06-03 1982-12-07 Amf Incorporated Circuit breaker
JPH0731968B2 (ja) * 1982-10-12 1995-04-10 生方 眞哉 熱応動スナップリレ−

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1200477A (en) * 1966-12-30 1970-07-29 Texas Instruments Inc Thermally responsive switch
DE1924701A1 (de) * 1968-05-15 1969-11-27 Otter Controls Ltd Thermisch ansprechender Schnappschalter
DE2646840A1 (de) * 1976-10-16 1978-04-20 Bbc Brown Boveri & Cie Elektrischer schutzschalter
DE3342144A1 (de) * 1983-11-22 1985-05-30 Ellenberger & Poensgen Gmbh, 8503 Altdorf Druckknopfbetaetigter ueberstromschutzschalter
DE8522254U1 (de) * 1985-08-02 1985-09-26 Ellenberger & Poensgen Gmbh, 8503 Altdorf Überstromschutzschalter

Also Published As

Publication number Publication date
JPH0721989B2 (ja) 1995-03-08
DE3688157D1 (de) 1993-05-06
JPS6334826A (ja) 1988-02-15
DE3526785C1 (de) 1986-07-17
CA1257314A (fr) 1989-07-11
US4667175A (en) 1987-05-19
EP0209832A3 (en) 1989-07-26
EP0209832B1 (fr) 1993-03-31
DE8521611U1 (fr) 1988-10-20
ATE87765T1 (de) 1993-04-15

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