EP1760748B1 - Elektrisches Schaltgerät - Google Patents

Elektrisches Schaltgerät Download PDF

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Publication number
EP1760748B1
EP1760748B1 EP06015649.4A EP06015649A EP1760748B1 EP 1760748 B1 EP1760748 B1 EP 1760748B1 EP 06015649 A EP06015649 A EP 06015649A EP 1760748 B1 EP1760748 B1 EP 1760748B1
Authority
EP
European Patent Office
Prior art keywords
release
lever
switching device
latching
electromagnetic
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.)
Active
Application number
EP06015649.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1760748A3 (de
EP1760748A2 (de
Inventor
Jürgen Christmann
Ralf Dipl.-Ing. Weber
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.)
ABB AG Germany
Original Assignee
ABB AG Germany
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 ABB AG Germany filed Critical ABB AG Germany
Publication of EP1760748A2 publication Critical patent/EP1760748A2/de
Publication of EP1760748A3 publication Critical patent/EP1760748A3/de
Application granted granted Critical
Publication of EP1760748B1 publication Critical patent/EP1760748B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/16—Electrothermal mechanisms with 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
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2463—Electromagnetic mechanisms with plunger type armatures

Definitions

  • the invention relates to an electrical switching device having a front front wall, with a thermal release, with an electromagnetic release, with a switching mechanism with a Verklinkungsstelle and at least one contact point, which is permanently opened or closed by means of the switching mechanism, with a switching handle, by means of a coupling element is connected to one end of a tab whose other end is coupled to a contact carrier carrying the movable contact piece, and with a latch lever which forms the Verklinkungsstelle with a release lever, wherein the contact carrier for the movable contact piece between the thermal and the electromagnetic release is , according to the preamble of claim 1.
  • the invention relates to a circuit breaker used to shut down loads in the event of a short circuit or overcurrent.
  • the invention can of course also be applied to motor protection switches and residual current circuit breakers.
  • a circuit breaker has in its interior an electromagnetic actuator having a plunger armature electromagnet with a core and a movable armature around which a coil is wound.
  • the armature moves and on the one hand strikes the contact lever, so that the contact point is opened quickly; On the other hand, it also causes a permanent opening of the contact point via a switching mechanism.
  • the thermal release which is usually designed as a bimetallic release, acts on the switching mechanism exclusively for permanent opening of the contact point.
  • the bimetal is usually designed as a strip, which bends due to the different expansion coefficients of the interconnected metals.
  • a strip made of a shape memory alloy can also be used.
  • the switch lock between two boards is mounted, which are interconnected and also the bearings for the corresponding, the Verklinkungsstelle forming components have or contain.
  • this switch is the electromagnetic release between the bimetallic strip and the contact lever, ie the contact lever is located on one side and the bimetallic strip on the other.
  • the FR 2 613 871 shows an electrical switching device with a thermal release, with a switching mechanism with a Verklinkungsstelle and at least one contact point, which is permanently opened or closed by means of the derailleur, with a switching handle, which is connected by means of a coupling element with one end of a ratchet lever, with a part the contact lever forms the Verklinkungsstelle, wherein the contact carrier for the movable contact piece between the thermal and the electromagnetic release is, wherein a detent on the latch lever with a projection on the contact lever forms the Verklinkungsstelle, and wherein a rotatably mounted hammer is provided, on the one hand from the thermal release and the other part of the electromagnetic release is pivoted and pivoted when triggered the latch lever in the direction of unlatching the Verklinkungsstelle.
  • the object of the invention is to further improve a switch of the type mentioned, in particular to simplify the assembly considerably.
  • the invention is therefore characterized in that a detent on the latch lever with a return on the rotatably mounted, cooperating with the electromagnetic release and the thermal release trigger lever forms the Verklinkungsstelle, and that a rotatably mounted hammer is provided, on the one hand by the thermal release and on the other hand, the electromagnetic release is pivotable and pivoted when triggered the release lever in the direction of unlatching the Verklinkungsstelle.
  • the axis of rotation between Verklinkungsstelle and electrical release is arranged, wherein the first arm cooperates with the latch lever and the second arm with the thermal and magnetic trigger.
  • the second arm may cover the armature of the electromagnetic release.
  • the axis of rotation of the hammer is fixed on a line which is formed by the bearing points of the trigger or impact lever and the control handle, this line is approximately perpendicular to the mounting plane or to the front wall.
  • the vote between unlatching before striking the contact lever is significantly improved, since the tolerance chain has been shortened compared to that of the previous switch lock in the switch S2 of the company ABB Stotz contact GmbH, Heidelberg, considerably.
  • the vote is in one part in the release lever. The striker hits on the release lever which moves until the unlatching and only then occurs on the movable contact carrier to the opening.
  • FIG. 4 the views accordingly Figures 1 and 2 and the FIG. 3 a corresponding view from the back of the views in the Figures 1 and 2 are shown.
  • a circuit breaker 10 which is partially visible in the area of its switching mechanism, has a housing 11, which is composed of a cup-shaped housing lower part and a cup-shaped housing upper part.
  • a housing 11 which is composed of a cup-shaped housing lower part and a cup-shaped housing upper part.
  • the lower part of the housing can be seen; in the FIGS. 3 and 4 only the rear derailleur is shown as such with a part of the contact lever, wherein the housing 11 is omitted.
  • the shows Fig. 3 the rear view of the rear derailleur for better clarity.
  • the housing is of a pedestal type and has a front front wall 12, two rear front walls 13 and 14, not fully shown in the drawing, two front side walls 15 and 16 connecting the front front wall 12 to the rear front walls; parallel to the front front wall or the rear front walls 13, 14 is a downwards the housing final mounting wall, in the FIGS. 1 to 4 is not shown and which is not important for the invention.
  • the front front wall 12 has an approximately semicircular bulge or protrusion 17, in the region of a bearing 18, a switch knob 19 is mounted.
  • the switch knob 19 is a double-arm, with a handle 20 and a located inside the switching device eye-shaped projection 21; in the eye-shaped extension 21, a passage opening 22 is introduced; the center of the passage opening 22, the center of the bearing 18 and the center line of the control handle 20 are in line or aligned with each other.
  • the switching handle 20 protrudes from an opening 23 in the protrusion 17 out.
  • a leg (not shown) of a bracket 24 is inserted, which has a U-shape, wherein the web 25 of the bracket in the FIGS. 1 to 4 is visible.
  • the switching device further comprises a release lever 100 which is rotatably mounted about the axis 18 of the control handle 19.
  • a recess 101 which forms the Verklinkungsstelle with a locking lug 30 on the pawl lever 29.
  • the locking lug 30 on the pawl lever 29 is formed on the end of the pawl lever 29, opposite to the tab 27 (see Fig.
  • the latching is accordingly hereinafter referred to by the reference numerals 30/101, see below.
  • the other end of the tab 27 is pivotally connected by means of the hinge axis 33 with the contact lever 34, which has approximately centrally a slot 35 with which it is rotatably mounted on a stationary pin 36 in the housing 11.
  • the contact lever 34 becomes a double-arm lever, whose lever axis 37, which is opposite to the hinge axis 33, carries the so-called movable contact piece 38, which cooperates with a fixed contact piece 39.
  • the latch lever 29 is rotatably mounted at its latching point 30, 101 opposite end via a pin assembly 40 in the housing (both in the lower housing part and in the upper housing part).
  • the switching mechanism In the closed position, in which the nose 30 rests against the recess 101, the switching mechanism is in the closed position, ie when the movable contact piece 38 contacts the fixed contact piece 39, in a first stable position, in which the central axis of the web 25 laterally , in the execution according to Fig. 2 left, next to the central axis of the bearing or the pivot bearing 18 of the switch knob 19 passes, so that the central axis of the leg 25 with the line formed by the central axis of the opening 22 and the central axis of the bearing 18 assumes an obtuse angle, in the direction of Verklinkungsstelle 30/101 is open.
  • the tab 27 and the latch lever 29 are approximately parallel to the front front wall. In the closed position, the bracket 24 pushes the tab away from the latching point 30/101, so that the resulting force generates the switch-on force.
  • the slot 35 lays down with its end, which on the side of the contact lever 34, on which the movable contact piece is located at. The slot 35 extends approximately perpendicular to the longitudinal extent of the contact lever 34th
  • a hammer 102 is provided below the axis of rotation 18, ie between the axis of rotation 18 and the electromagnetic release 46, a hammer 102 is provided, the axis of rotation 103 is on a line which is approximately perpendicular to the mounting plane through the axis 18 and parallel to this.
  • the hammer 102 has a first arm 104 which extends into the region of the trigger lever 100 and cooperates with a nose 105, see also Fig. 3 ,
  • the hammer 102 further has a second lever 106, which projects approximately to the mounting plane and covers the striker 48 with its end.
  • the arm 104 projects toward the front wall 12, and the arm 104 and the arm 106 form a Z-shape with each other, and the end portions of the arms 104 and 106 are approximately parallel to each other.
  • an end 49 of a connecting rod 50 is connected, hinged here, which by means of a pin 51, which projects perpendicular to the plane in this and therefore only shown in broken lines, behind a bimetallic strip 52, which is the thermal release, attacks.
  • the thermal release 52 is located between the pin 51 and the portion 106th
  • the longitudinal axis of the connecting rod 50 extends approximately perpendicular to the longitudinal extent of the bimetallic strip; in the execution according to the FIGS. 1 to 4
  • the longitudinal extent of the bimetallic strip 52 with the attachment side forms an acute angle, which is open towards the electromagnetic release.
  • a compression spring 53 is provided which acts on the contact lever clockwise about the bearing 36, so that the Compression spring 53, the switch-off, so that movement of the contact lever 34 from the position according to Fig. 2 in the position according to Fig. 1 , supported.
  • the thermal release 52 bends, then the free end bends approximately in the direction of arrow P and takes over the rod or connecting rod 50 the portion 106 of the hammer with, whereby the return 101 of the nose 30 and thereby removes the Latching is opened.
  • the beginning of the release is back in the Fig. 3 shown; the further procedure is the same as that described above.
  • the switch lock described with reference to a circuit breaker can also be used in a residual current circuit breaker; In this case, instead of the electromagnetic release 46, which responds to short-circuit current, a trigger should be used which responds to a fault current.
  • a contact carrier which carries a contact bridge, which in the ON state two fixed contacts, so a pair of contact pieces, electrically conductively connects.
  • a ramp be 108 against which during the triggering process an extension 109 of the tab 27 comes to a stop, which is made Fig. 4 is clearly visible.
  • the release lever which is optionally coupled to a release lever in an adjacently arranged circuit breaker is further pivoted to its triggered position, so that the trigger lever is safely spent in the adjacent circuit breaker in its release position, so that there also the triggering process proceeds as described above.

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  • Breakers (AREA)
EP06015649.4A 2005-08-31 2006-07-27 Elektrisches Schaltgerät Active EP1760748B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005041231A DE102005041231B4 (de) 2005-08-31 2005-08-31 Elektrisches Schaltgerät

Publications (3)

Publication Number Publication Date
EP1760748A2 EP1760748A2 (de) 2007-03-07
EP1760748A3 EP1760748A3 (de) 2008-05-14
EP1760748B1 true EP1760748B1 (de) 2013-05-01

Family

ID=37488008

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06015649.4A Active EP1760748B1 (de) 2005-08-31 2006-07-27 Elektrisches Schaltgerät

Country Status (5)

Country Link
US (1) US7528690B2 (zh)
EP (1) EP1760748B1 (zh)
CN (1) CN1929068B (zh)
CA (1) CA2557682C (zh)
DE (1) DE102005041231B4 (zh)

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DE102007010015A1 (de) * 2007-03-01 2008-09-11 Siemens Ag Fehlerstromschutzschalter, Differenzstromschutzschalter sowie Kombigerät aus Leitungsschutzschalter und Fehlerstromschutzschalter bzw. Differenzstromschutzschalter
DE102010004641B4 (de) * 2009-04-23 2021-02-18 Abb Ag Elektromagnetisches Auslösesystem und Installationsschaltgerät mit einem elektromagnetischen Auslösesystem
SK288388B6 (sk) * 2009-07-13 2016-09-05 Hess R&D, S. R. O. Spúšťový mechanizmus prúdového chrániča s nadprúdovou ochranou
US8134092B2 (en) * 2009-08-21 2012-03-13 Schneider Electric USA, Inc. Circuit breaker cover attachment
DE102009053012A1 (de) 2009-11-16 2011-05-19 Abb Ag Elektrisches Installationsschaltgerät
CN204118012U (zh) * 2014-08-27 2015-01-21 浙江正泰电器股份有限公司 断路器的操作机构
US10053878B2 (en) 2016-11-01 2018-08-21 Darrell Allen Fall protection anchor
US10415261B2 (en) 2016-11-01 2019-09-17 Darrell Allen Outrigger support
US10847333B2 (en) * 2018-09-17 2020-11-24 Siemends Industry, Inc. Circuit breakers including dual triggering devices and methods of operating same
US10984974B2 (en) * 2018-12-20 2021-04-20 Schneider Electric USA, Inc. Line side power, double break, switch neutral electronic circuit breaker
JP7246976B2 (ja) * 2019-03-07 2023-03-28 東洋電装株式会社 レバースイッチ
US11118363B1 (en) 2020-03-13 2021-09-14 Darrell Allen Saddle tie-back fall protection anchor
US12033823B2 (en) 2021-12-28 2024-07-09 Schneider Electric USA, Inc. Circuit breakers

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Also Published As

Publication number Publication date
CA2557682C (en) 2014-01-21
US20070046403A1 (en) 2007-03-01
EP1760748A3 (de) 2008-05-14
EP1760748A2 (de) 2007-03-07
DE102005041231B4 (de) 2009-11-26
DE102005041231A1 (de) 2007-03-01
US7528690B2 (en) 2009-05-05
CN1929068B (zh) 2012-10-03
CN1929068A (zh) 2007-03-14
CA2557682A1 (en) 2007-02-28

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