EP0656641B1 - Déclencheur pour disjoncteurs ou interrupteurs de protection - Google Patents

Déclencheur pour disjoncteurs ou interrupteurs de protection Download PDF

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Publication number
EP0656641B1
EP0656641B1 EP94118386A EP94118386A EP0656641B1 EP 0656641 B1 EP0656641 B1 EP 0656641B1 EP 94118386 A EP94118386 A EP 94118386A EP 94118386 A EP94118386 A EP 94118386A EP 0656641 B1 EP0656641 B1 EP 0656641B1
Authority
EP
European Patent Office
Prior art keywords
trip
lever
arm
switch
trip unit
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
EP94118386A
Other languages
German (de)
English (en)
Other versions
EP0656641A3 (fr
EP0656641A2 (fr
Inventor
Stefan Welker
Volker Heins
Wolfgang Dipl.-Ing. Kutsche
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.)
Eaton Industries GmbH
Original Assignee
Kloeckner Moeller 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 Kloeckner Moeller GmbH filed Critical Kloeckner Moeller GmbH
Publication of EP0656641A2 publication Critical patent/EP0656641A2/fr
Publication of EP0656641A3 publication Critical patent/EP0656641A3/fr
Application granted granted Critical
Publication of EP0656641B1 publication Critical patent/EP0656641B1/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
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/12—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by voltage falling below a predetermined value, e.g. for no-volt protection

Definitions

  • the invention relates to a trigger unit for a Circuit breaker or circuit breaker, especially as Undervoltage release with the switch drive mechanism interacts in such a way that when there is insufficient tension, the Release unit immediately releases the switch drive mechanism, wherein the trigger unit is designed as a plunger armature coil Trip coil with a by a compression spring in the trip direction loaded, lying in a magnetic storage housing Has trigger plunger.
  • Circuit breaker with an additional protection module are known. This is how EP 0 525 691 describes A1 a switch of this type, in the housing of which a front trip unit designed as a module can be installed.
  • Such protection modules are mostly as undervoltage releases designed, when falling below the to Switch contacts applied voltage of the undervoltage release actuated the switch-off mechanism.
  • the release units known today operate with the help of levers with the switching mechanism of the switch.
  • levers used are relatively bulky and large designed so that a desired compact and small version a trip unit cannot be achieved. So is from the GB-PS 15 58 785 a tripping unit for a circuit breaker or an undervoltage protection switch known.
  • the trigger unit are the levers on two opposite sides attached to the housing, making the levers large and they also have a very complicated shape to manufacture receive.
  • the complicated lever mechanism also works disadvantageous to a quick assembly of the switch and the Trip unit.
  • the invention is therefore based on the object Tripping unit for circuit breakers or circuit breakers type mentioned above, in particular as undervoltage release to be designed so that the release unit in its construction much simplified, reduced in size and the Assembly and manufacturing costs are reduced.
  • the release plunger the trip unit should automatically after each switch off or trigger can be pressed into the magnetic storage housing.
  • the trigger unit according to the invention only has two levers, all for one release unit take on important functions.
  • the state of the art need known release units as well as EP 0 525 691 A2 against it three levers.
  • a reduction means one decisive simplification of the mechanics, reduces the Production effort and production costs and also bears to the functional safety of the trip unit.
  • the trigger plunger automatically in the Magnetic storage case is pressed as soon as the switch triggered or switched off.
  • the invention also describes a control curve, which as Sliding part is designed such that it is the end of one arm of the spring-loaded clamping lever during the switch-on process against the action of a compression spring in one in the housing Press the existing recess and the tension lever around its axis of rotation pivots that the release lever from the clamping lever is released.
  • the control curve is preferably on Control element attached.
  • control curve is on arcuate flat part that in the middle of the flat side has an opening and the opening of the control element encloses that when switching the switch on or off Control element takes the control cam along and around the axis of rotation of the control element moves.
  • control curve is much more stable than that previously used transmission mechanisms between switches and Tripping unit that can be realized with levers.
  • the design of the control curve is accurate and wear-free Power transmission to the tensioning lever of the release unit.
  • the control element position is on the side of the control curve Transfer trigger unit.
  • the recess of the Control curve on one side when switching on the switch cooperates with one end of the tensioning lever, the side is ramped.
  • the interaction between switches and trigger unit determines that a temporally and spatially exact interlocking of tension lever and control cam required.
  • the clamping lever is preferably designed as a two-armed lever and is between the two lever arms by means of a bolt rotatably attached to the housing of the trip unit. At about same length dimensions of the two lever arms of the tensioning lever both arms have the same lifting height at the same twist angle.
  • the arc-shaped, interacting with the release lever Arm of the tensioning lever has an inside Effective area, which is designed so that the arm during the Rotation movement when the switch is turned off the release lever so pressurized that the trigger plunger around his The axis of rotation is pivoted in the direction of the trigger plunger and the Push the tappet all the way into the magnetic storage housing.
  • the trigger lever is a double lever arm, the Connecting bridge of the two lever arms the axis of rotation of the Release lever is.
  • the particular advantage of this double lever shape can be seen in the fact that the connecting bridge through its cylindrical shape is at the same time bearing axis of rotation and in one suitably designed recess in the release housing and so clamped by the corresponding housing cover that the release lever is still about the longitudinal axis of the connecting web can pivot. This means there are no additional ones Bracket parts required.
  • the arm of the trigger lever which cooperates with the tension lever, preferably has at its end a cam which is connected to the Area of action of the tension lever arm interacts.
  • This Cam is a guide of the trigger lever from the effective surface of the clamping lever always guaranteed.
  • the round shape of the cam also contributes to the smooth sliding along the Effective area at.
  • the lever arm of the trigger lever, the one with the trigger plunger and the Switch-off protection mechanism of the switch interacts, points a cam on the side facing away from the trigger plunger, the which holds one end of a compression spring, which preferably as Coil spring is formed.
  • the contact surface of the lever arm with the trigger plunger is also preferably as a rounded Train cams.
  • the axis of rotation of the tensioning lever and the axis of rotation of the release lever should preferably be arranged parallel to each other, whereby a favorable power transmission is guaranteed.
  • the longitudinal axis of the Magnetic storage system and the tension lever longitudinal axis should also be parallel to each other.
  • Another significant advantage of the invention is that exclusive use of compression springs, in particular Coil springs between the housing parts and the levers to store.
  • compression springs in particular Coil springs between the housing parts and the levers to store.
  • the design of the lever and the housing parts enables faster assembly compared to today used tension springs, as these at their ends in corresponding Brackets need to be threaded.
  • Fig. 1 is a preferred embodiment of the trigger unit for Circuit breaker and circuit breaker shown.
  • the housing of the trip unit is made from the mold Base body 23 and the molded cover part 8 formed, the two parts are preferably made of plastic and held together by screws 6.
  • 8 and 23 are in the housing parts Cutouts for the magnetic storage housing 21 with a trigger plunger 20, the release lever 12 and the tensioning lever 1 are present.
  • the trigger unit is in a recess next to the Control element 34 of the switch housing, not shown arranged and acts with the trigger mechanism of the switch via the tension lever 1 and the release lever 12 together.
  • the tension lever 1 which is designed as a rocker, is connected to the bolt 7 rotatably supported in the housing cover part 8. Is located the arm 1a of the tensioning lever 1 inside the housing.
  • the arm 1b is in a slot-shaped recess in the Exterior cover part retractable. The end of slot-shaped recess is connected to a recess 27, in which a compression spring 5, in particular a coil spring lies in.
  • the compression spring 5 is supported with one end the housing cover part 8. The other end of the compression spring 5 held by a cam 4 located on the tension lever arm 1b.
  • the Compression spring 5 pressurizes the tensioning lever 1 such that the Tension lever arm 1b is pushed out of the housing cover 8.
  • Tension lever arm 1b On the side facing away from the housing cover part 8 Tension lever arm 1b is a cam 2 which is at its end is preferably rounded. The tension lever 1 is shaped so that the cam 2 when turning the clamping lever 1 opposite the Spring action of the compression spring 5 in the recess 27 of the Housing cover part lies.
  • the tensioning lever arm 1a is arcuate and has on its arc inside an effective area 3, which with the cylindrical cam 17 of the release lever arm 18 cooperates. Due to the cylindrical shape of the cam 17 and the special shape of the effective area 3, is during the Rotation of the tensioning lever 1, at which the tensioning lever arm 1b is off the housing cover part 8 is pressed out by the compression spring 5, a continuous power transmission from the tension lever arm 1a the cam 17 of the trigger lever arm 18 ensures that the trigger lever 12 is pivoted about its axis of rotation 13 is that the trigger lever arm 14 against the trigger plunger 20th is pivoted and the trigger plunger 20 completely in the Magnetic storage housing 21 presses.
  • the trigger lever 12 is a C-shaped double lever arm with the Lever arms 14 and 18 which are rigid on a connecting web 13 are attached.
  • the trigger lever 12 lies with his Connecting web 13 in a recess in the housing base 23 a, the trigger lever 12 about the longitudinal axis of the Connecting web 13 is rotatable. That’s it cylindrical end 19 of the connecting web 13 in the also cylindrical recess 22 of the Main body 23.
  • the trigger arm 18 is off Stability reasons a disc-shaped segment, on the Connecting web 13 facing away from a cylindrical cam 17 is integrally formed, the cam 17 on the trigger arm 14 facing away from the disk segment side 18a and the facing disc segment side 18a for the tension lever arm 1a a Support surface forms.
  • the trigger lever arm 14 has a cam 16, the one end of a coil spring Compression spring 11 holds, the compression spring 11 the trigger arm 14 presses against the trigger plunger 20.
  • the Release lever arm 14 has an effective area that acts as a cam is formed and cooperates with the trigger plunger 20.
  • On its end facing away from the connecting web 13 has Release lever arm 14 an effective area 15, which also is preferably designed as a cam that does not illustrated switch protection mechanism of the switch cooperates.
  • the compression spring 11 is in a recess of the Housing base body 23, with one end supported on the housing body 23 and with the other end Release lever arm 14 in the direction of release plunger 20 pressurized.
  • the connecting web 13 is the connection contacts two button 10 arranged side by side comprises.
  • the two Release lever arms 14 and 18 in turn include the two buttons 10, the release buttons of one between the two buttons displaceable actuating plunger 9 are actuated.
  • the Actuating plunger 9 is one in which Control element 34 facing side of the housing cover part 8 located opening can be actuated by the switch-on mechanism.
  • Fig. 2 shows the interaction of the clamping lever 1 with the Control curve 31 and the trigger lever 12.
  • the control curve 31 is an arcuate flat part that in the Has an opening in the middle of the flat side. Encloses the opening the control element 34 such that when the on or off Switch controls 34 takes the control curve and here moved about the axis of rotation of the control element 34.
  • the control cam has the trigger unit facing it Narrow side 35 has a recess 32 which is dimensioned in this way is that the cam 2 formed on the tension lever arm 1b so far can be pivoted into the recess 32 that in turn Tension lever arm 1a just rotates the release lever so that the Trigger plunger 20 completely into the magnetic storage housing 21 is depressed.
  • the recess 32 of the control curve 31 has a ramp-shaped Page 33, on which the cam 2 of the Release lever arm 1b slides along.
  • the control curve 31 from the control element 34 entrained and here about the axis of rotation of the control element 34 moves.
  • the cam 2 is from the ramp-shaped side 33 pressurized and against the spring action of the compression spring 5 pressed into the recess 27 of the housing cover 8.
  • the clamping lever 1 is pivoted so that it Release lever 12 is no longer pressurized and thus this is freely rotatable.
  • the trigger plunger 20 is in the magnetic storage case 21 located compression spring pressed out of the magnetic memory housing 21 and rotates the trigger lever 12, which with his Area of action 15 the switch protection mechanism of the switch operated.
  • the control element 34 is then by a Switch spring located in the OFF position, whereby the control curve 31 is carried along by the control element 34.
  • the control cam 31 pushes the recess 32 the control curve 31 in front of the cam 2, which is now by the Compression spring 5 can be pressed into the recess 32.
  • the clamping lever 1 is pivoted, which in turn the Release lever 12 rotated, the release lever 12 the Trigger plunger 20 presses into the magnetic memory housing 21.
  • the switch and trigger unit are in his again original OFF position and can be switched on again manually become.

Claims (18)

  1. Unité de déclenchement, avec un disjoncteur pour coupure en charge ou un disjoncteur de protection, en particulier sous forme de disjoncteur à minimum de tension, qui coopère avec le mécanisme de commande du disjoncteur de telle manière que, dans le cas d'une tension insuffisante, l'unité de déclenchement déclenche immédiatement le mécanisme de commande du disjoncteur, l'unité de déclenchement présentant une bobine de déclenchement (21), réalisée sous forme de bobine à noyau plongeur, avec un poussoir de déclenchement (20) rappelé en direction de déclenchement (30) par un ressort de compression et logé dans un boítier de bobine magnétique,
    caractérisée en ce que, lors de l'ouverture du disjoncteur ou dans le cas du verrou de maintien ouvert, l'extrémité (2) d'un bras (1b) d'un levier d'armement (1), réalisé sous forme de bascule, est pressée par un ressort de compression (5) dans un évidement (32) se trouvant dans une came de commande (31) du disjoncteur, l'autre bras (la) du levier d'armement (1) faisant subir à un levier de déclenchement (12) une torsion telle que le levier de déclenchement (12) est basculé autour de son axe de rotation (13) et qu'il pousse ainsi le poussoir de déclenchement (20) dans le boítier de bobine magnétique (21).
  2. Unité de déclenchement selon la revendication 1,
    caractérisée en ce que la came de commande (31) est conformée de telle manière qu'elle repousse l'extrémité (2) du premier bras (1b) du levier d'armement (1) rappelé par ressort, pendant le processus d'enclenchement, contre l'action du ressort de compression (5), dans un évidement (27) se trouvant dans le couvercle (8) du carter et fait pivoter le levier d'armement (1) autour de son axe de rotation (13) suffisamment loin pour que le levier de déclenchement (12) soit libéré du levier d'armement (1).
  3. Unité de déclenchement selon l'une des revendications précédentes,
    caractérisée en ce que la came de commande (31) est fixée à l'élément de manoeuvre (34).
  4. Unité de déclenchement selon l'une des revendications précédentes,
    caractérisée en ce que la came de commande (31) est une pièce plane courbée qui présente, au milieu de la face plane, une ouverture et l'ouverture entoure l'élément de manoeuvre (34) de telle manière que, lors de l'enclenchement ou respectivement du déclenchement du disjoncteur, l'élément de manoeuvre entraíne avec lui la came de commande (31) et la déplace en même temps autour de l'axe de rotation de l'élément de manoeuvre (34).
  5. Unité de déclenchement selon l'une des revendications précédentes,
    caractérisée en ce que l'évidement (32) de la came de commande (31) se trouve sur la face (35) tournée vers l'unité de déclenchement.
  6. Unité de déclenchement selon l'une des revendications précédentes,
    caractérisée en ce que l'évidement (32) de la came de commande (31) comprend un côté (33) en forme de rampe le long duquel, lors de l'enclenchement du disjoncteur, glisse l'extrémité (2) du bras (1b) du levier d'armement (1) et peut ainsi être repoussée dans un évidement (27) se trouvant dans le couvercle (8) du carter.
  7. Unité de déclenchement selon la revendication 6,
    caractérisée en ce que la face mince (35) de la came de commande (31) tournée vers l'unité de déclenchement a fait subir au levier d'armement (1) lorsque le disjoncteur est enclenché, une torsion telle que le levier d'armement (1) libère le levier de déclenchement (12).
  8. Unité de déclenchement selon l'une des revendications précédentes,
    caractérisée en ce que le bras (1b) du levier d'armement (1) coopérant avec la came de commande (31) présente à son extrémité un poussoir (2) qui vient en prise dans l'évidement (32) de la came de commande (31).
  9. Unité de déclenchement selon l'une des revendications précédentes,
    caractérisée en ce que le bras (1b) du levier d'armement (1) coopérant avec la came de commande (31) est rappelé en pression par un ressort (5) de telle manière que le bras (1b) du levier d'armement (1) est poussé hors du couvercle (8) du carter.
  10. Unité de déclenchement selon l'une des revendications précédentes,
    caractérisée en ce que le bras (1b) du levier d'armement (1) coopérant avec la came de commande (31) présente à son extrémité, sur la face tournée vers le couvercle (8) du carter, une fixation (4), en particulier un ergot, de réception du ressort de compression (5).
  11. Unité de déclenchement selon l'une des revendications précédentes,
    caractérisée en ce que le bras (1a) du levier d'armement (1) est réalisé courbe et présente, sur la face intérieure de la courbure, une surface active (3) qui coopère avec le levier de déclenchement (12).
  12. Unité de déclenchement selon la revendication 11,
    caractérisée en ce que la surface active (3) du bras (1a) du levier d'armement (1) a une forme telle que, pendant le mouvement de rotation, lors du déclenchement du disjoncteur, le levier de déclenchement (12) est soumis à une action de pression de telle manière que le levier de déclenchement (12) est entraíné en rotation autour de son axe de rotation (13) en direction du poussoir de déclenchement (20) et pousse le poussoir de déclenchement (20) complètement dans le boítier de bobine magnétique (21).
  13. Unité de déclenchement selon l'une des revendications précédentes,
    caractérisée en ce que le levier de déclenchement (12) est à deux bras de levier, l'entretoise de liaison (13) des deux bras de levier (14, 18) étant l'axe de rotation (13) du levier de déclenchement (12).
  14. Unité de déclenchement selon la revendication 13,
    caractérisée en ce que le bras (18) du levier de déclenchement (12) présente, à son extrémité écartée de l'entretoise de liaison (13), un ergot (17) qui coopère avec la surface active (3) du bras (1a) du levier d'armement.
  15. Unité de déclenchement selon l'une des revendications précédentes,
    caractérisée en ce que le bras (14) du levier de déclenchement (12) présente une surface qui est de préférence réalisée sous forme d'ergot et coopère avec le poussoir de déclenchement (20).
  16. Unité de déclenchement selon l'une des revendications précédentes,
    caractérisée en ce que le bras (14) du levier de déclenchement (12) présente, à son extrémité écartée de l'entretoise de liaison (13), une surface (15) qui coopère avec le mécanisme de protection de déclenchement du disjoncteur.
  17. Unité de déclenchement selon l'une des revendications précédentes,
    caractérisée en ce que l'axe de rotation (7) du levier d'armement (1) et l'axe de rotation (13) du levier de déclenchement (12) sont parallèles l'un à l'autre.
  18. Unité de déclenchement selon l'une des revendications précédentes,
    caractérisée en ce que l'axe longitudinal du levier d'armement et l'axe longitudinal du système à bobine magnétique (20, 21) sont sensiblement parallèles l'un à l'autre.
EP94118386A 1993-12-03 1994-11-23 Déclencheur pour disjoncteurs ou interrupteurs de protection Expired - Lifetime EP0656641B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4341214A DE4341214C2 (de) 1993-12-03 1993-12-03 Auslöseeinheit für Leistungs- oder Schutzschalter
DE4341214 1993-12-03

Publications (3)

Publication Number Publication Date
EP0656641A2 EP0656641A2 (fr) 1995-06-07
EP0656641A3 EP0656641A3 (fr) 1997-05-28
EP0656641B1 true EP0656641B1 (fr) 1999-04-14

Family

ID=6504088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94118386A Expired - Lifetime EP0656641B1 (fr) 1993-12-03 1994-11-23 Déclencheur pour disjoncteurs ou interrupteurs de protection

Country Status (3)

Country Link
EP (1) EP0656641B1 (fr)
AT (1) ATE179024T1 (fr)
DE (2) DE4341214C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7722444B2 (en) 2005-05-13 2010-05-25 Black & Decker Inc. Angle grinder
US10818450B2 (en) 2017-06-14 2020-10-27 Black & Decker Inc. Paddle switch

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5834996A (en) * 1996-04-18 1998-11-10 Ellenberger & Poensgen Gmbh Electric switch having undervoltage tripping
DE59608320D1 (de) * 1996-06-10 2002-01-10 Siemens Ag Unterspannungsauslöser
DE19735413B4 (de) * 1997-08-14 2007-11-29 Siemens Ag Auslösevorrichtung für einen Schutzschalter
DE10145059C1 (de) * 2001-09-13 2003-03-13 Moeller Gmbh Schaltgerät
DE102009059839A1 (de) 2009-12-21 2011-06-22 Eaton Industries GmbH, 53115 Vorrichtung zum Erkennen der Stromrichtungsumkehr
KR101212213B1 (ko) * 2011-07-15 2012-12-13 엘에스산전 주식회사 회로차단기의 모듈화된 트립기구 및 부속기구 장치
JP5747806B2 (ja) * 2011-12-14 2015-07-15 三菱電機株式会社 回路遮断器
KR101297549B1 (ko) * 2011-12-30 2013-08-14 엘에스산전 주식회사 배선용 차단기의 부족 전압 트립 장치
DE102014202485B4 (de) 2014-02-12 2021-08-05 Siemens Aktiengesellschaft Auslösevorrichtung

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Publication number Priority date Publication date Assignee Title
US3928826A (en) * 1974-05-30 1975-12-23 Westinghouse Electric Corp Circuit breaker with improved tripped latch means
US4013926A (en) * 1975-07-11 1977-03-22 Westinghouse Electric Corporation Circuit breaker with improved trip actuator and undervoltage release mechanism
US4097831A (en) * 1977-01-21 1978-06-27 General Electric Company Circuit breaker accessory tripping apparatus
US4246558A (en) * 1979-01-22 1981-01-20 Gould Inc. Auxiliary feature modules for circuit breakers
US5093643A (en) * 1990-10-22 1992-03-03 Westinghouse Electric Corp. Undervoltage release device assembly for circuit breaker
DE4125338A1 (de) * 1991-07-31 1993-02-04 Kloeckner Moeller Gmbh Ausloeseeinheit fuer leistungsschalter und schutzschalter, insbesondere ausgefuehrt als unterspannungsausloeser

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7722444B2 (en) 2005-05-13 2010-05-25 Black & Decker Inc. Angle grinder
US8087977B2 (en) 2005-05-13 2012-01-03 Black & Decker Inc. Angle grinder
US8087976B2 (en) 2005-05-13 2012-01-03 Black & Decker Inc. Trigger assembly for angle grinder
US10818450B2 (en) 2017-06-14 2020-10-27 Black & Decker Inc. Paddle switch

Also Published As

Publication number Publication date
EP0656641A3 (fr) 1997-05-28
DE4341214C2 (de) 1996-11-07
ATE179024T1 (de) 1999-04-15
DE59408114D1 (de) 1999-05-20
DE4341214A1 (de) 1995-06-08
EP0656641A2 (fr) 1995-06-07

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