EP0506503B1 - Schlossmechanismus für Lastschalter - Google Patents

Schlossmechanismus für Lastschalter Download PDF

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Publication number
EP0506503B1
EP0506503B1 EP92400634A EP92400634A EP0506503B1 EP 0506503 B1 EP0506503 B1 EP 0506503B1 EP 92400634 A EP92400634 A EP 92400634A EP 92400634 A EP92400634 A EP 92400634A EP 0506503 B1 EP0506503 B1 EP 0506503B1
Authority
EP
European Patent Office
Prior art keywords
contact
detente
spring
contact carrier
mechanism 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.)
Expired - Lifetime
Application number
EP92400634A
Other languages
English (en)
French (fr)
Other versions
EP0506503A1 (de
Inventor
Jean Marie Roiatti
Francis Deckert
Thierry Sitz
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.)
Hager Electro SAS
Original Assignee
Hager Electro SAS
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 Hager Electro SAS filed Critical Hager Electro SAS
Publication of EP0506503A1 publication Critical patent/EP0506503A1/de
Application granted granted Critical
Publication of EP0506503B1 publication Critical patent/EP0506503B1/de
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
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure

Definitions

  • the present invention relates to a lock mechanism for a circuit breaker with a thermomagnetic circuit breaker or similar device. It also relates to circuit breakers fitted with this mechanism.
  • Line protection circuit breakers include, in a housing, a circuit extending between two terminals and comprising a thermal trip bimetal for protection of the line against overcurrents and an electromagnetic tripping device comprising a coil with an associated plunger core to a striker, to ensure disjunction by opening a movable contact cooperating with one or more fixed contacts.
  • the multipole circuits are preferably produced by combining several single-pole circuit breakers of this type.
  • a locking mechanism of the toggle type, generally comprising an operating member with a lever which can be actuated manually and causing a rod tending to push back a pivoting contact carrier which carries one or more contacts to bring the latter into pressure contact against a fixed contact, until in a position in which the return in the opposite direction, towards the contact opening, is normally prevented by a pawl preventing the link, by pressing the knee lever on the contact carrier, from escaping and releasing it.
  • Manual opening is carried out by operating the handle in the opposite direction.
  • the disjunction is generally caused by action of the bimetallic strip or the striker against a trigger lever so as to cause the release of the pawl and therefore the escape of the link, and, in the case of magnetic disjunction, the forced opening of the door. -contact.
  • the return spring of the contact carrier is also generally used to provide the contact pressure.
  • the present invention proposes to remedy these drawbacks and to provide a circuit breaker having a lock mechanism capable of being assembled, preferably automatically, in a single assembly and such that the assembly can be mounted in one piece, preferably automatically, in the circuit breaker.
  • Another object of the invention is to provide such a lock mechanism which comprises a limited number of parts.
  • Yet another objective of the invention is to allow the arming of the contact spring when the lock mechanism is put into place in the circuit breaker housing.
  • the subject of the invention is a circuit breaker lock mechanism, of the type comprising an actuating member provided with a handle and normally pushed back in the opening direction by a return spring, a link rod, one end of which is mounted eccentrically. on the actuating member, a contact carrier pivoting about an axis and having a ramp against which can come to bear and brace the other end of the link, a movable contact mounted on the carrier -contact so as to be able to pivot slightly thereon to exert contact pressure on a fixed contact, a power spring urging the contact carrier in the opening direction and, when the contact carrier is in the closed position, applying the movable contact in contact pressure against the fixed contact, a pawl mounted on the contact carrier and preventing the escape of the rod when it is braced against the contact carrier, and a trigger lever suscep tible, when actuated, to cause the pawl to tilt and release the link, and possibly cause the contact carrier in the open position for a forced tearing of the movable contact, characterized
  • compact assembly in the sense of the invention means an assembly in which the various constituents remain in place, relatively non-removable, when the assembly is handled or transported.
  • the return spring is a spring of the pin type, mounted on a pivot axis common to the contact carrier and to the trigger lever.
  • the pawl and the trigger lever are produced in an integral assembly which may possibly consist of a single piece.
  • the return of the pawl in the closed position is ensured by the return spring of the actuating member itself during a first part of the closing stroke thereof.
  • the free arm of this spring can, moreover, be armed during mounting to be located behind a relief of the ratchet trigger, the actuating member having a ramp laterally pushing said spring arm to release it definitively during the first arming maneuver.
  • the invention also relates to circuit breakers having a mechanism according to the invention.
  • the mechanism assembly shown in exploded view in FIG. 1, comprises a contact carrier 1 formed by two flanges 2 and 3.
  • the flange 2 has folded tabs 4, 5 having crimping spouts intended to penetrate holes 6, 7 of the flange 3 for assembly by crimping.
  • Two slots 8 are cut in the flanges 2 and 3 having a first part comprising ramps 10 on which the link can be braced and a second part 9 for releasing the link 36 (fig. 2).
  • Holes 11 in the two flanges allow the ends of the pivot axis of the assembly to pass, while holes 12 are made in the flanges 2, 3 at the bottom to receive the pivot axes of the movable contact 16.
  • the flanges 2 and 3 have external lateral tabs 13, 14 for possible kinematic connection with adjacent modular devices.
  • the movable contact 16 has the shape of a rectilinear lever, bent at its lower part with two lugs 17 which penetrate into the holes 12 and serve as a pivot axis.
  • a side tab 18 of braid welding completes the contact 16.
  • the trigger lever 19 has a central hole 20, one of the exits, visible in Figure 1, is offset laterally below a stud 21 located on the upper surface.
  • An extension or lug 22 protrudes in the intermediate position on the other side.
  • This lever 19 has an intermediate surface 23 intended to be struck by the rod of the striker 47 of the electromagnetic coil and, at its lower end, a foot 24 capable of engaging the movable contact 16.
  • the pawl 25 has two holes 26, 27 allowing its lateral positioning and its blocking on the lever 19, making it integral in rotation with this lever.
  • the ratchet has a branch provided with the attachment ramp 28, which continues with a tapered portion, a pawl arm 29 extending below for a forced release of the link 36.
  • a contact 16 a pivot pin 30 passing through the hole 20 of the lever and emerging outside the flanges through the holes 11, is mounted on the flange 2, a powerful contact spring 31 of the type with pin, one branch 32 of which is pressed against the upper part of the movable contact 16 to push it clockwise and the other branch 33 of which is blocked, after tensioning the spring 31 during assembly, against a lug 15 of the flange 2.
  • the protruding end of the branch 33 is deflected, then blocked by a relief of the housing relieving the tab 15 and ensuring the tensioning of the spring on the housing.
  • the second flange 3 is placed and the two flanges are joined by crimping, the tensioning of the spring 31 against the tab 15 being carried out after crimping.
  • the assembly thus prepared can be associated with the actuating member 34 with its handle 35, the connecting rod 36 and the return spring 37 of the actuating member, one branch of which is integral with this member and the other of which , 38, can push the lever-ratchet assembly through the spout 22 when the lever 35 is turned in an anti-clockwise arming direction, until the branch 38 comes into contact with a relief 39 in the housing which immobilizes it.
  • the branch 38 is blocked by the relief 40 but the first arming rotation of the member 34, which has a ramp 41 for this purpose, laterally spreads the branch 38 until it leaves the relief 39 and is thrown forward counterclockwise.
  • the branch 38 of the spring 37 has encountered the stop 39 so that the last part of the rotation of the contact carrier 1, with its pawl lever, is carried out without biasing the spring 37, the pawl maintaining the end 44 of the rod against the ramp 10 by the presence of its surface 28 suitably oriented, by simple form locking.
  • the spring 31 is in its extreme tension position.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Push-Button Switches (AREA)
  • Keying Circuit Devices (AREA)
  • Breakers (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Lock And Its Accessories (AREA)

Claims (10)

  1. Schloßmechanismus für Lastschalter mit einer mit einem Hebel (35) versehenen Betätigungsvorrichtung (34), die normalerweise von einer Rückstellfeder (37) in Öffnungsrichtung gedrückt wird, mit einem Schwingarm (36), dessen eines Ende exzentrisch an der Betätigungsvorrichtung (34) befestigt ist, mit einem Kontaktträger (1), der um eine Achse (30) drehbar ist und eine geneigte Fläche (10) aufweist, gegen die das andere Ende des Schwingarms (36) drücken und sich abstützen kann, mit einem beweglichen Kontakt (16), der am Kontaktträger (1) so befestigt ist, daß er sich leicht auf diesem drehen kann, um einen Andruck auf den starren Kontakt (43) ausüben zu können, mit einer starken Feder (31), die den Kontaktträger in die Öffnungsrichtung drückt und, wenn der Kontaktträger sich in Schließposition befindet, den beweglichen Kontakt (16) gegen den starren Kontakt (43) drückt, mit einer Sperrklinke (25), die am Kontaktträger (1) befestigt ist und eine unbeabsichtigte Bewegung des Schwingarms (36) verhindert, wenn dieser gegen den Kontaktträger gedrückt wird, und mit einem Auslösehebel (19), der, wenn er betätigt wird, das Umklappen der Sperrklinke (25) und die Freigabe des Schwingarms bewirkt und schließlich den Kontaktträger (1) in die Öffnungsposition mitnimmt, um den beweglichen Kontakt (16) zu trennen,
    dadurch gekennzeichnet,
    daß eine kompakte Baugruppe gebildet wird, die in einem Stück in den Lastschalter einbaubar ist und daß der Kontaktträger (1) in Form zweier miteinander verbundener Flansche (2, 3) ausgeführt ist, zwischen denen sich der bewegliche Kontakt (16), die strake Feder (31), eine Drehachse (30), der Auslösehebel (19) und die Sperrklinke (25) befinden.
  2. Mechanismus nach Anspruch 1, dadurch gekennzeichnet, daß es sich bei der Rückstellfeder um eine Schenkelfeder (31) handelt, die sich auf der gemeinsamen Drehachse des Kontaktträgers (1) und des Auslösehebels (19) befindet.
  3. Mechanismus nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß die Sperrklinke (25) und der Auslösehebel (19) als eine gemeinsame Baugruppe ausgeführt sind.
  4. Mechanismus nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Rückwärtsbewegung der Sperrklinke (25) in die Schließposition während des ersten Teils der Schließbewegung durch die Rückstellfeder (37) der Betätigungsvorrichtung (34) sichergestellt wird.
  5. Mechanismus nach dem Anspruch 4, dadurch gekennzeichnet, daß der Arm der Feder, welche die Rückwärtsbewegung der Sperrklinke verursacht, nach dem ersten Teil der Bewegung durch einen Vorsprung im Gehäuse blockiert wird.
  6. Mechanismus nach einem der Ansprüche 4 und 5, dadurch gekennzeichnet, daß der freie Arm der Feder (37), die die Rückwärtsbewegung der Sperrklinke bewirkt, beim Einbau des Mechanismus in das Gehäuse des Lastschalters gespannt wird, so daß er sich hinter einem Vorsprung am Auslösehebel (19) der Sperrklinke (25) befindet, hierbei ist die Betätigungsvorrichtung (34) mit einer geneigten Fläche (41) versehen, die seitlich gegen den besagten Arm der Feder (37) drückt, um ihn beim ersten Spannvorgang freizugeben.
  7. Mechanismus nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Kontaktträger (1) aus zwei Flanschen (2, 3) aus gestanztem Metall besteht, die insbesondere durch eine Quetschverbindung aneinander befestigbar sind und die mit Langlöchern (8) mit der geneigten Ebene (10) für das Abstützen des Schwingarms (36) und mit einer Hemmungsverlängerung (9) des Schwingarms versehen sind.
  8. Mechanismus nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Sperrklinke (25) aus Metall gestanzt ist und mit dem Kontaktträger (1) eine Einheit bildet, wobei die Sperrklinke mit einem Arm versehen ist, der den Schwingarm (36) zurückdrückt.
  9. Mechanismus nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß der Auslösehebel (19), der mit der Sperrklinke (25) eine Einheit bildet, mit einem seitlichen Vorsprung (22) versehen ist, der mit dem freien Arm der Rückstellfeder (37) der Betätigungsvorrichtung (34) zusammenwirkt.
  10. Lastschalter, dadurch gekennzeichnet, daß er mit einem Mechanismus nach einem der obengenannten Ansprüche versehen ist.
EP92400634A 1991-03-29 1992-03-11 Schlossmechanismus für Lastschalter Expired - Lifetime EP0506503B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR919103863A FR2674679B1 (fr) 1991-03-29 1991-03-29 Mecanisme de serrure pour disjoncteur.
FR9103863 1991-03-29

Publications (2)

Publication Number Publication Date
EP0506503A1 EP0506503A1 (de) 1992-09-30
EP0506503B1 true EP0506503B1 (de) 1995-07-12

Family

ID=9411289

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92400634A Expired - Lifetime EP0506503B1 (de) 1991-03-29 1992-03-11 Schlossmechanismus für Lastschalter

Country Status (5)

Country Link
EP (1) EP0506503B1 (de)
AT (1) ATE125062T1 (de)
DE (1) DE69203368T2 (de)
ES (1) ES2075638T3 (de)
FR (1) FR2674679B1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4313207A1 (de) * 1993-04-22 1994-10-27 Kopp Heinrich Ag Leitungsschutzschalter
IT1275644B1 (it) * 1994-10-18 1997-10-17 Bticino Spa Interruttore automatico ad elevate prestazioni
IT1292339B1 (it) * 1997-05-20 1999-01-29 Gewiss Spa Cinematismo di azionamento del contatto mobile particolarmente per interruttori elettrici automatici
DE602006009369D1 (de) 2006-02-03 2009-11-05 Hager Electro Sas Schaltschloss mit beweglicher Drehachse
FR2928774B1 (fr) * 2008-03-12 2013-12-27 Hager Electro Sas Mecanisme de serrure a biellette elastique.
CN202816829U (zh) * 2012-09-20 2013-03-20 上海诺雅克电气有限公司 一种高稳定性小型断路器
CN108565138B (zh) * 2018-06-08 2023-12-12 苏州华之杰电讯股份有限公司 一种开关触头组机构
CN109616385B (zh) * 2018-12-25 2024-07-16 常有电气有限公司 微型断路器操作机构
CN112563087B (zh) * 2020-12-25 2025-05-27 浙江奥来电器有限公司 一种小型断路器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2626104B1 (fr) * 1988-01-20 1995-05-24 Hager Electro Perfectionnement aux interrupteurs a coupure automatique, notamment aux interrupteurs differentiels et disjoncteurs
EP0338930A1 (de) * 1988-04-22 1989-10-25 Hager Electro S.A. Lastschalter oder Differential-Lastschalter
US4968863A (en) * 1989-06-29 1990-11-06 Square D Company Unitary breaker assembly for a circuit breaker
ES2063331T3 (es) * 1989-08-08 1995-01-01 Felten & Guilleaume Ag Oester Interruptor de proteccion.

Also Published As

Publication number Publication date
ES2075638T3 (es) 1995-10-01
DE69203368T2 (de) 1996-01-11
DE69203368D1 (de) 1995-08-17
ATE125062T1 (de) 1995-07-15
EP0506503A1 (de) 1992-09-30
FR2674679A1 (fr) 1992-10-02
FR2674679B1 (fr) 1994-06-17

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