EP0656641A2 - Déclencheur pour disjoncteurs ou interrupteurs de protection - Google Patents

Déclencheur pour disjoncteurs ou interrupteurs de protection Download PDF

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Publication number
EP0656641A2
EP0656641A2 EP94118386A EP94118386A EP0656641A2 EP 0656641 A2 EP0656641 A2 EP 0656641A2 EP 94118386 A EP94118386 A EP 94118386A EP 94118386 A EP94118386 A EP 94118386A EP 0656641 A2 EP0656641 A2 EP 0656641A2
Authority
EP
European Patent Office
Prior art keywords
lever
release
switch
arm
unit 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
EP94118386A
Other languages
German (de)
English (en)
Other versions
EP0656641B1 (fr
EP0656641A3 (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 tripping unit for a circuit breaker or a circuit breaker, in particular as an undervoltage release, which interacts with the switch drive mechanism in such a way that if the voltage is insufficient, the tripping unit immediately releases the switch drive mechanism, the tripping unit being a tripping coil designed as a plunger armature coil with a compression spring in the tripping direction loaded release plunger lying in a magnetic storage housing.
  • EP 0 525 691 A1 describes a switch of this type, in whose housing a trigger unit designed as a module can be installed at the front. Protection modules of this type are usually designed as undervoltage releases, the undervoltage release actuating the switch-off mechanism when the voltage falls below the voltage at the switch contacts.
  • the release units known today interact with the switching mechanism of the switch by means of levers.
  • the levers used for this are relatively bulky and large, so that a compact and small design is desired a trip unit cannot be achieved.
  • a tripping unit for a circuit breaker or an undervoltage protection switch is known from GB-PS 15 58 785.
  • the levers are attached to two opposite sides of the housing, as a result of which the levers have to be made large and, moreover, they have a shape which is very complicated to manufacture.
  • the complicated lever apparatus also has a disadvantageous effect on the quick assembly of the switch and the release unit.
  • a particularly disadvantageous effect of the release unit according to GB-PS 15 58 785 is that it is necessary to manually push the release plunger back into the magnetic storage housing each time the switch is triggered or switched off. Each time the switch is triggered or switched off, it cannot be switched on immediately. Before attempting to switch on again, the operating lever of the switch that has been switched off or tripped must be reset counterclockwise via the OFF position in order to allow it to return to the switching position. The trigger plunger is pressed into the magnetic storage housing. There are therefore a relatively large number of switching movements to be carried out by the operating personnel in order to bring the switch into the ON position.
  • the invention is therefore based on the object of designing a tripping unit for circuit breakers or circuit breakers of the type mentioned at the outset, in particular as an undervoltage release, in such a way that the tripping unit is substantially simplified in its construction, its size is reduced and the assembly and production outlay is reduced.
  • the parts used should be reduced while the functional scope of the release unit remains the same.
  • the trigger plunger of the trigger unit should be pressed into the magnetic memory housing automatically after each switch-off or triggering.
  • the release unit according to the invention has only two levers, which assume all the functions that are important for a release unit.
  • a reduction means a decisive simplification of the mechanics, reduces the production effort and costs and also contributes to the functional reliability of the trip unit. It is also advantageous that the trigger plunger is automatically pressed into the magnetic storage housing as soon as the switch is triggered or switched off.
  • the invention also describes a control cam, which is designed as a sliding part such that it the end of one arm of the spring-loaded clamping lever during the switch-on process opposes the action of a compression spring in a recess in the housing and pivots the tensioning lever so far about its axis of rotation that the release lever is released by the tensioning lever.
  • the control curve is preferably attached to the control element.
  • control curve is an arcuate flat part that has an opening in the middle of the flat side and the opening encloses the control element in such a way that when the switch is switched on or off, the control element takes the control curve with it and about the axis of rotation of the control element emotional.
  • control curve is much more stable than the previously used transmission mechanisms between the switch and the release unit, which are realized with levers. Due to the attachment to the control element and the deflection-resistant design of the control curve, precise and wear-free power transmission to the tensioning lever of the release unit is ensured.
  • the control element position is transmitted to the release unit by means of a cutout on the side of the control cam facing the release unit.
  • the recess of the control cam has a side which interacts with the one end of the tensioning lever when the switch is switched on, the side being in the form of a ramp.
  • the interaction between the switch and the tripping unit is determined by an appropriate design of the side of the recess, which requires a precise interlocking of the tensioning lever and control cam in terms of time and space.
  • the tensioning lever is preferably designed as a two-armed lever and is rotatably attached to the housing of the release unit between the two lever arms by means of a bolt. With approximately the same length dimensions of the two lever arms of the tensioning lever, both arms have the same lifting height at the same angle of rotation.
  • the cooperating with the release lever arc-shaped arm of the clamping lever has an effective surface on its inside, which is designed so that the arm presses the release lever during the rotational movement when the switch is turned off in such a way that the release plunger is pivoted about its axis of rotation in the direction of the release plunger and press the release plunger fully into the magnetic storage housing.
  • the release lever is a double lever arm, the connecting web of the two lever arms being the axis of rotation of the release lever.
  • the particular advantage of this double lever shape can be seen in the fact that the connecting web, due to its cylindrical shape, is also the axis of rotation of the bearing and rests in a correspondingly shaped recess in the release housing and is clamped by the corresponding housing cover so that the release lever can still be pivoted about the longitudinal axis of the connecting web. As a result, no additional bracket parts are required.
  • the arm of the release lever which cooperates with the tensioning lever, preferably has a cam at its end, which cooperates with the effective surface of the tensioning lever arm. This cam always ensures that the release lever is guided by the effective surface of the clamping lever.
  • the round shape of the cam also contributes to the smooth sliding along the effective surface.
  • the lever arm of the release lever which interacts with the release plunger and the switch protection mechanism of the switch, has a cam on the side facing away from the release plunger, which holds one end of a compression spring, which is preferably designed as a coil spring.
  • the contact surface of the lever arm with the trigger plunger should also preferably be designed as a rounded cam.
  • the lever arm of the release lever has an active surface which interacts with the switch-off protection mechanism.
  • the axis of rotation of the tensioning lever and the axis of rotation of the release lever are preferably to be arranged parallel to one another, which ensures a favorable power transmission.
  • the longitudinal axis of the magnetic storage system and the longitudinal axis of the tensioning lever should also be parallel to one another.
  • Another essential advantage of the invention is the exclusive use of compression springs, in particular helical springs, which are mounted between the housing parts and the levers.
  • compression springs in particular helical springs
  • the design of the levers and the housing parts enables a faster assembly compared to the tension springs used today, since these have to be threaded at their ends in corresponding holders.
  • the housing of the release unit is formed from the molded base 23 and the molded cover part 8, the two parts preferably being made of plastic and held together by screws 6.
  • the connection terminals 26, 28 and the associated terminal cover 25, as well as the rectifier part 24 and two buttons 10, with associated actuating plungers 9 are arranged.
  • the trigger unit is arranged in a recess next to the control element 34 of the switch housing, not shown, and interacts with the trigger mechanism of the switch via the tensioning lever 1 and the trigger lever 12.
  • the rocker arm 1 designed as a rocker is rotatably mounted with the bolt 7 in the housing cover part 8.
  • the arm 1a of the tensioning lever 1 is located inside the housing.
  • the arm 1b can be lowered into a slot-shaped recess in the outside of the housing cover part.
  • the end of the slot-shaped recess is connected to a recess 27 in which a compression spring 5, in particular a helical spring, lies.
  • the compression spring 5 is supported with one end against the housing cover part 8.
  • the other end of the compression spring 5 is held by a cam 4 located on the tension lever arm 1b.
  • the compression spring 5 pressurizes the tensioning lever 1 in such a way that the tensioning lever arm 1b is pressed out of the housing cover 8.
  • a cam 2 On the side of the clamping lever arm 1b facing away from the housing cover part 8 is a cam 2, which is preferably rounded at its end.
  • the tensioning lever 1 is shaped such that the cam 2, when the tensioning lever 1 is rotated, lies completely in the recess 27 of the housing cover part, counter to the spring action of the compression spring 5.
  • the tensioning lever arm 1a is designed in the shape of an arc and has an effective surface 3 on its inside of the arc, which cooperates with the cylindrical cam 17 of the release lever arm 18. Due to the cylindrical shape of the cam 17 and the special shape of the effective surface 3, during the rotation of the tensioning lever 1, in which the tensioning lever arm 1b is pressed out of the housing cover part 8 by the compression spring 5, a continuous power transmission from the tensioning lever arm 1a to the cam 17 is Release lever arm 18 ensures that the release lever 12 is pivoted about its axis of rotation 13 so that the release lever arm 14 is pivoted against the release plunger 20 and presses the release plunger 20 completely into the magnetic storage housing 21.
  • the trigger lever 12 is a C-shaped double lever arm with the lever arms 14 and 18, which are rigidly attached to a connecting web 13.
  • the release lever 12 lies with its connecting web 13 in a recess in the basic housing body 23, the release lever 12 being rotatable about the longitudinal axis of the connecting web 13.
  • the cylindrical end 19 of the connecting web 13 lies in the likewise cylindrical recess 22 of the basic housing body 23.
  • the release lever arm 18 is a disk-shaped segment, at the end facing away from the connecting web 13 there is a cylindrical cam 17 is integrally formed, the cam 17 being formed on the disk segment side 18a facing away from the release lever arm 14 and the facing disk segment side 18a forming a support surface for the tensioning lever arm 1a.
  • the release lever arm 14 has a cam 16 which holds one end of a compression spring 11 designed as a helical spring, the compression spring 11 pressing the release lever arm 14 against the release plunger 20.
  • the trigger lever arm 14 has an active surface which is designed as a cam and interacts with the trigger plunger 20.
  • the release lever arm 14 has an active surface 15, which is also preferably designed as a cam, which interacts with the switch protection mechanism, not shown, of the switch.
  • the compression spring 11 lies in a recess in the housing base body 23, with one end being supported on the housing base body 23 and with the other end pressurizing the release lever arm 14 in the direction of the release plunger 20.
  • the connecting web 13 is encompassed by the connection contacts of two buttons 10 arranged next to one another.
  • the two release lever arms 14 and 18 in turn comprise the two buttons 10, the release buttons of which are actuated by an actuating plunger 9 which can be moved between the two buttons.
  • the actuating plunger 9 can be actuated by the switch-on mechanism through an opening in the side of the housing cover part 8 facing the operating element 34.
  • the control cam 31 is an arcuate flat part that has an opening in the middle of the flat side.
  • the opening encloses the control element 34 in such a way that when the Switch the control element 34 takes the control cam and thereby moves about the axis of rotation of the control element 34.
  • the control cam has on its narrow side 35 facing the trigger unit a recess 32 which is dimensioned in such a size that the cam 2 formed on the clamping lever arm 1b can be pivoted into the recess 32 to such an extent that the clamping lever arm 1a rotates the trigger lever just so, that the trigger plunger 20 is fully pressed into the magnetic storage housing 21.
  • the recess 32 of the control cam 31 has a ramp-shaped side 33, on which the cam 2 of the release lever arm 1b slides when the switch is switched on.
  • the control curve 31 is carried along by the control element 34 and is thereby moved about the axis of rotation of the control element 34.
  • the cam 2 is pressurized from the ramp-shaped side 33 and pressed against the spring action of the compression spring 5 into the recess 27 of the housing cover 8. As a result, the clamping lever 1 is pivoted so that it no longer pressurizes the release lever 12 and it can thus be freely rotated.
  • the plunger armature coil holds the release plunger in the magnetic storage case, which is loaded by a compression spring in the release direction 30.
  • the release lever 12 is pressed against the release plunger by the compression spring 11 and does not trigger the switch-off protection mechanism of the switch. The switch remains on.
  • the trigger plunger 20 is pressed out of the magnetic memory housing 21 by the compression spring located in the magnetic memory housing 21 and rotates the trigger lever 12, which actuates the switch-off protection mechanism of the switch with its active surface 15.
  • the control element 34 is then thrown into the OFF position by a spring located in the switch, the control cam 31 being carried along by the control element 34.
  • the cutout 32 of the control cam 31 is pushed in front of the cam 2, which can now be pressed into the cutout 32 by the compression spring 5.
  • the clamping lever 1 is pivoted, which in turn rotates the release lever 12, the release lever 12 pressing the release plunger 20 into the magnetic storage housing 21.
  • the switch and trigger unit are in their original OFF position and can be switched on again manually.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Keying Circuit Devices (AREA)
  • Breakers (AREA)
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
DE4341214 1993-12-03
DE4341214A DE4341214C2 (de) 1993-12-03 1993-12-03 Auslöseeinheit für Leistungs- oder Schutzschalter

Publications (3)

Publication Number Publication Date
EP0656641A2 true EP0656641A2 (fr) 1995-06-07
EP0656641A3 EP0656641A3 (fr) 1997-05-28
EP0656641B1 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 (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0813219A1 (fr) * 1996-06-10 1997-12-17 Siemens Aktiengesellschaft Déclencheur à manque de tension
DE10145059C1 (de) * 2001-09-13 2003-03-13 Moeller Gmbh Schaltgerät
EP2546855A1 (fr) * 2011-07-15 2013-01-16 LSIS Co., Ltd. Appareil modulaire de mécanisme de déclenchement et dispositif auxiliaire pour disjoncteur
CN103165357A (zh) * 2011-12-14 2013-06-19 三菱电机株式会社 电路断路器
CN103187215A (zh) * 2011-12-30 2013-07-03 Ls产电株式会社 塑壳断路器的欠压跳闸装置

Families Citing this family (6)

* 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
DE19735413B4 (de) * 1997-08-14 2007-11-29 Siemens Ag Auslösevorrichtung für einen Schutzschalter
US8087977B2 (en) 2005-05-13 2012-01-03 Black & Decker Inc. Angle grinder
DE102009059839A1 (de) 2009-12-21 2011-06-22 Eaton Industries GmbH, 53115 Vorrichtung zum Erkennen der Stromrichtungsumkehr
DE102014202485B4 (de) 2014-02-12 2021-08-05 Siemens Aktiengesellschaft Auslösevorrichtung
US10818450B2 (en) 2017-06-14 2020-10-27 Black & Decker Inc. Paddle switch

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4097831A (en) * 1977-01-21 1978-06-27 General Electric Company Circuit breaker accessory tripping apparatus
GB1558785A (en) * 1975-07-11 1980-01-09 Westinghouse Electric Corp Circuit breaker with trip actuator and under voltage release mechanism
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
EP0525691A2 (fr) * 1991-07-31 1993-02-03 Moeller GmbH Déclencheur pour disjoncteur et interrupteurs de protection, réalisé notamment comme déclencheur par sous-tension

Family Cites Families (1)

* Cited by examiner, † Cited by third party
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1558785A (en) * 1975-07-11 1980-01-09 Westinghouse Electric Corp Circuit breaker with trip actuator and under voltage 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
EP0525691A2 (fr) * 1991-07-31 1993-02-03 Moeller GmbH Déclencheur pour disjoncteur et interrupteurs de protection, réalisé notamment comme déclencheur par sous-tension

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0813219A1 (fr) * 1996-06-10 1997-12-17 Siemens Aktiengesellschaft Déclencheur à manque de tension
DE10145059C1 (de) * 2001-09-13 2003-03-13 Moeller Gmbh Schaltgerät
EP1298693A1 (fr) * 2001-09-13 2003-04-02 Moeller GmbH Commutateur
EP2546855A1 (fr) * 2011-07-15 2013-01-16 LSIS Co., Ltd. Appareil modulaire de mécanisme de déclenchement et dispositif auxiliaire pour disjoncteur
US8686815B2 (en) 2011-07-15 2014-04-01 Lsis Co., Ltd. Apparatus of modular trip mechanism and auxiliary mechanism for circuit breaker
CN103165357A (zh) * 2011-12-14 2013-06-19 三菱电机株式会社 电路断路器
CN103165357B (zh) * 2011-12-14 2015-12-16 三菱电机株式会社 电路断路器
CN103187215A (zh) * 2011-12-30 2013-07-03 Ls产电株式会社 塑壳断路器的欠压跳闸装置
EP2610886A1 (fr) * 2011-12-30 2013-07-03 LSIS Co., Ltd. Dispositif de déclenchement de tension de pénurie de disjoncteur à boîtier moulé
US8749328B2 (en) 2011-12-30 2014-06-10 Lsis Co., Ltd. Shortage voltage trip device of molded case circuit breaker
CN103187215B (zh) * 2011-12-30 2015-09-23 Ls产电株式会社 塑壳断路器的欠压跳闸装置

Also Published As

Publication number Publication date
EP0656641B1 (fr) 1999-04-14
ATE179024T1 (de) 1999-04-15
DE4341214C2 (de) 1996-11-07
DE59408114D1 (de) 1999-05-20
DE4341214A1 (de) 1995-06-08
EP0656641A3 (fr) 1997-05-28

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