EP0680065A1 - Disjoncteur de protection de surcharge - Google Patents

Disjoncteur de protection de surcharge Download PDF

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Publication number
EP0680065A1
EP0680065A1 EP95105469A EP95105469A EP0680065A1 EP 0680065 A1 EP0680065 A1 EP 0680065A1 EP 95105469 A EP95105469 A EP 95105469A EP 95105469 A EP95105469 A EP 95105469A EP 0680065 A1 EP0680065 A1 EP 0680065A1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
slide
rocker
contact
breaker according
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
EP95105469A
Other languages
German (de)
English (en)
Other versions
EP0680065B1 (fr
Inventor
Fred Moalem
John R. Joyce, Jr.
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.)
Siemens Electromechanical Components Inc
Original Assignee
Siemens Electromechanical Components Inc
Potter and Brumfield Inc
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 Siemens Electromechanical Components Inc, Potter and Brumfield Inc filed Critical Siemens Electromechanical Components Inc
Publication of EP0680065A1 publication Critical patent/EP0680065A1/fr
Application granted granted Critical
Publication of EP0680065B1 publication Critical patent/EP0680065B1/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
    • 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
    • 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
    • H01H73/26—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 tumbler
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49105—Switch making

Definitions

  • overload circuit breakers are used in electrical and electronic systems in which components have to be protected against overcurrents.
  • a typical circuit breaker with a bimetallic trip mechanism is described in US-A-4,363,016.
  • a rocker is provided for resetting the circuit breaker after it has tripped.
  • it is not possible to switch the contacts manually from the switched-on state to the switched-off state.
  • the aim of the present invention is therefore to avoid the disadvantages mentioned in a circuit breaker of the type mentioned in the introduction.
  • a circuit breaker which is effective as a switch and as an overcurrent release is to be created, which has few individual parts and which is compact in construction and has small dimensions, in particular with regard to the height and width.
  • the circuit breaker should be designed so that the overload release function is reset by moving the switch to the on state. Furthermore, it should be ensured that a slow or creeping contact actuation when opening or closing is avoided when the switch is actuated and that an undefined and incomplete contact closure (so-called volatile contact) is also excluded.
  • this object is achieved in a circuit breaker of the type mentioned at the outset in that the switching means comprise a slide with a front actuation end and a rear drive end, which is arranged in the housing in such a way that its actuation end engages with the contact pair in a feed position is and this holds open, in a retracted position, however, is out of engagement with the pair of contacts, and that in the housing a curve guide is provided, by which the actuating end is deflected in the transverse direction when the slide is moved longitudinally and thereby causes a sudden switching movement when the contact pair is opened or closed.
  • the preferred exemplary embodiment of a manually switchable overload circuit breaker shown in the drawings, and in particular in FIGS. 1 and 2, has an elongated housing with a trough-shaped base body 1 and a cover 2, the latter being fastened to the open side of the base body 1.
  • the base body 1 and the cover 2 are formed from an electrically insulating plastic material.
  • the base body 1 forms an elongated contact chamber 11 and its own drive chamber 12, both of which are separated from one another by a partition 13.
  • the contact chamber 11 is designed to receive a fixed contact 3 carried by a connecting element 31 and a movable contact 4 carried by a bimetallic leaf spring 42 and a connecting element 41.
  • the connection elements 31 and 41 are fastened in slots 15 and 16 of the base body 1, such that the two contacts 3 and 4 are arranged opposite one another.
  • the guide gap 14 is the only passage between the contact chamber 11 and the drive chamber 12.
  • the central portions 51 and 61 of the slide 5 and the separating strip 6 are reduced in thickness and width, so that they are next to each other in a common plane in the Guide gap 14 can be performed and the guide gap can be so narrow that it ensures sufficient insulation between the contact chamber 11 and the drive chamber 12.
  • the drive chamber has an open end side, in which a rocker 7 is pivotally mounted between the base body 1 and the cover 2, for example by means of journal 71.
  • the slide 5 has a front actuating end 52 with an actuating finger 53 which is in the direction of the movable contact 4 supporting bimetallic leaf spring 42 projects, and a cam portion 54 on the opposite of the movable contact 4 Side is formed. Furthermore, the slide 5 has a rear drive end 55, which is arranged in the drive chamber 12 and is in engagement with a first rocker wing 72. Furthermore, a pull-back pin 56 is integrally formed on the rear drive end 55, which can be brought into engagement with a pull-back arm 73 which is formed on the underside (towards the interior of the housing) of the rocker 7.
  • the separating strip 6 forms an insulating section 62 at its front end which can be inserted between the fixed contact 3 and the movable contact 4 when they are in the contact opening state. Furthermore, there is a recess 63 in the separating strip 6, through which the contacts 3 and 4 can be closed when the separating strip is in the advanced position and the triggering mechanism, i.e. H. the bimetal spring 42 is not in the release state. As mentioned, the separating strip 6 is guided in the common guide gap 14 with the slide 5, which is in the same alignment with the first rocker wing 72.
  • the separating strip 6 has a cranked section 64 in the drive chamber 12, so that its rear end 65 engages with the associated second rocker wing.
  • a compression or coil spring 8 is arranged in the drive chamber 12; this spring 8 is supported on the dividing wall 13 and acts against the cranked section 64 of the dividing strip in order to bias the dividing strip 6 against the second rocker wing 74 and into the contact opening position.
  • the circuit breaker is shown in its switch-on position or the contact closing position.
  • the movable contact 4 is pressed by the spring force of the bimetallic leaf spring 42 through the recess 63 of the separating strip 6, which is in the advanced position, against the fixed contact 3.
  • the rocker 7 is also in its switch-on position, so that its second wing 74 touches the rear end 65 of the separating strip 6.
  • the closed movable contact 4 is supported on a shoulder 66 of the separating strip 6 and thereby holds the separating strip in the advanced position against the restoring force of the compression spring 8, which acts against the cranked section 64 of the separating strip 6.
  • the slide 5 is in the retracted position so that its actuating finger 53 only slightly touches the bimetallic spring 42 and its cam portion 54 rests on a side wall 17 and a step 18 of the housing.
  • the bimetallic leaf spring 42 bends and snaps, causing the movable contact 4 to move downward (in FIG. 2) and thereby move out of the plane of the isolating strip 6 and removed from the recess 63.
  • the spring 8 which is biased against the cranked section 64 of the separating strip 6, presses on the rear end 65 of the separating strip and pushes it to the right (in FIG. 2), so that it comes with its insulating section 62 between the contacts 3 and 4.
  • the rocker wing 74 is pressed outward and thereby rotates the rocker 7 counterclockwise, as a result again the first rocker wing 72 moves the slider 5 to the left in the figure.
  • the front actuating end 52 then sits between the bimetallic spring 42 and the step 18 of the housing.
  • the rocker is then in a middle position between the switch-on and switch-off positions and thus indicates the “release” state, as can be seen in FIG. 3.
  • the separation of the contacts enables the insulating section 62 of the isolating strip 6 to slide between the contacts due to the spring force of the compression spring 8.
  • the slider 5 holds the bimetallic spring 42 in the open position and thus prevents the movable contact 4 from closing the contact again or touching the surface of the separating strip (FIG. 5).
  • the circuit breaker is designed in such a way that the contacts do not begin to separate from one another until the slide ramp 57 has reached stage 18 and has changed moved down the step.
  • a manual force F is applied to move the circuit breaker from its off position (or the trip position shown in Figure 3) to the on position ( Figure 6).
  • the rocker 7 and its protruding retraction arm 73 move clockwise.
  • the retraction arm 73 only engages with the retraction pin 56 when the rocker is pivoted through a predetermined angle, as shown in FIG. 6.
  • the only decisive forces are the manual force F and the spring forces.
  • the rocker 7 returns to its switch-off position according to FIG. 5.
  • the rocker 7 moves clockwise, it also prints the separating strip 6 to the left in the drawing and thus enables its recess 63 to come into alignment with the contacts 3 and 4.
  • the projecting withdrawal arm 73 touches and pulls back the slide (FIG. 7)
  • the movable contact 4 falls through this recess 63 in the separating strip 6 and touches the fixed contact 3. This prevents volatile contact when moving from the switch-off to the switch-on position.
  • the position of the rocker 7 with its angular position indicates the state of the switching and triggering mechanism, the end position according to FIG. 2 being the switched “ON” state, the end position of the rocker 7 counterclockwise according to FIG. 5 the switched “OFF” state and an intermediate position of the rocker according to Figure 3 indicates the "TRIP" state of the circuit breaker.

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Breakers (AREA)
  • Element Separation (AREA)
EP95105469A 1994-04-28 1995-04-11 Disjoncteur de protection de surcharge Expired - Lifetime EP0680065B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/234,750 US5742219A (en) 1994-04-28 1994-04-28 Switchable circuit breaker
US234750 1994-04-28

Publications (2)

Publication Number Publication Date
EP0680065A1 true EP0680065A1 (fr) 1995-11-02
EP0680065B1 EP0680065B1 (fr) 1997-10-08

Family

ID=22882658

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95105469A Expired - Lifetime EP0680065B1 (fr) 1994-04-28 1995-04-11 Disjoncteur de protection de surcharge

Country Status (7)

Country Link
US (2) US5742219A (fr)
EP (1) EP0680065B1 (fr)
JP (1) JP2929520B2 (fr)
KR (1) KR100339752B1 (fr)
CA (1) CA2147928C (fr)
DE (1) DE59500761D1 (fr)
TW (1) TW267233B (fr)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6402572B1 (en) * 1997-11-25 2002-06-11 Hendry Mechanical Works Electric switching device assembly system
DE19856707A1 (de) * 1998-12-09 2000-06-21 Ellenberger & Poensgen Schutzschalter zur Absicherung von Stromkreisen
US6444072B1 (en) * 1999-08-11 2002-09-03 Southpac Trust International Process for producing holographic material
US6275134B1 (en) * 2000-03-01 2001-08-14 Tsan-Chi Chen Safety switch with a rocker type actuator and trip-off contact
US6480090B1 (en) * 2000-11-20 2002-11-12 Tsung-Mou Yu Universal device for safety switches
ITMI20011203A1 (it) * 2001-06-07 2002-12-07 Signal Lux Italia Spa Interuttore con disgiuntore termico
US6707368B2 (en) * 2001-07-18 2004-03-16 Cooper Technologies Company Manually trippable circuit breaker
US6714116B1 (en) * 2002-01-22 2004-03-30 Rototech Electrical Components, Inc. Circuit breaker switch
US6621402B2 (en) * 2002-01-23 2003-09-16 Albert Huang Circuit breaker
DE10348864A1 (de) * 2003-10-21 2005-06-02 Ellenberger & Poensgen Gmbh Schutzschalter mit einer Bimetallschnappscheibe
US7026906B2 (en) * 2003-12-19 2006-04-11 Albert Huang Circuit breaker
US7269915B2 (en) * 2004-04-23 2007-09-18 Drew Flechsig Shoe with built in micro-fan
ZA200506062B (en) * 2004-10-04 2007-12-27 Circuit Breaker Ind Trip indicative rocker switch
KR100740996B1 (ko) 2005-06-16 2007-07-19 하이테콤시스템(주) 누전차단기의 자동 복구 장치
US20070035376A1 (en) * 2005-08-15 2007-02-15 Albert Huang Circuit breaker
US7705706B2 (en) * 2007-06-11 2010-04-27 Yun Meng Yun Xi Lighting Products Co Ltd Plug with replaceable fuse
US7948351B2 (en) * 2009-04-09 2011-05-24 Tsung Mou Yu Circuit protection device having warning function
TW201119153A (en) * 2009-11-18 2011-06-01 Gem Terminal Ind Co Ltd Plug structure with a fuse post capable of being driven for mounting and dismounting
KR20200069495A (ko) 2018-12-07 2020-06-17 송관권 흙막이 차수벽체 및 지반보강, 지반개량 시공방법
US11990303B1 (en) * 2022-12-06 2024-05-21 David Worsham Testable thermal circuit breaker

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4363016A (en) * 1981-06-03 1982-12-07 Amf Incorporated Circuit breaker
WO1987003421A1 (fr) * 1985-11-27 1987-06-04 Slater Electric, Inc. Coupe-circuit et interrupteur unitaires

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2318076A (en) * 1940-05-31 1943-05-04 Westinghouse Electric & Mfg Co Motor protective device
US2783330A (en) * 1955-01-31 1957-02-26 Gen Electric Automatic circuit breaker
BE556706A (fr) * 1956-04-28
US3846729A (en) * 1973-03-27 1974-11-05 Tokyo Hoshiden Kk Current limiter
US4123737A (en) * 1976-11-08 1978-10-31 Heinemann Electric Company Bimetallic circuit breaker
US4518943A (en) * 1982-09-28 1985-05-21 Heinemann Electric Company Bimetallic circuit breaker with an auxiliary switch
US4510479A (en) * 1983-03-30 1985-04-09 Airpax Corporation PC-board mounted thermal breaker
FR2623327A1 (fr) * 1987-11-12 1989-05-19 Itt Composants Instr Disjoncteur thermique miniaturise pour plaque a circuits imprimes
US5248954A (en) * 1992-11-25 1993-09-28 Chiang Huan Chang Circuit protecting device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4363016A (en) * 1981-06-03 1982-12-07 Amf Incorporated Circuit breaker
GB2100060A (en) * 1981-06-03 1982-12-15 Amf Inc A circuit breaker
WO1987003421A1 (fr) * 1985-11-27 1987-06-04 Slater Electric, Inc. Coupe-circuit et interrupteur unitaires
US4833439A (en) * 1985-11-27 1989-05-23 Slater Electric, Inc. Unitary switch and circuit breaker

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
FILCHAK: "W28 - a Circuit Breaker to Replace Glass Cartridge Fuses", SIEMENS COMPONENTS, vol. 26, no. 4/5, MUNCHEN DE, pages 161 - 164, XP000266916 *

Also Published As

Publication number Publication date
KR100339752B1 (ko) 2002-10-25
CA2147928C (fr) 1999-09-07
CA2147928A1 (fr) 1995-10-29
JP2929520B2 (ja) 1999-08-03
TW267233B (fr) 1996-01-01
US5918361A (en) 1999-07-06
US5742219A (en) 1998-04-21
EP0680065B1 (fr) 1997-10-08
KR950034342A (ko) 1995-12-28
DE59500761D1 (de) 1997-11-13
JPH0887944A (ja) 1996-04-02

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