EP1112585A2 - Low voltage switching device with bimetal trip - Google Patents

Low voltage switching device with bimetal trip

Info

Publication number
EP1112585A2
EP1112585A2 EP00926810A EP00926810A EP1112585A2 EP 1112585 A2 EP1112585 A2 EP 1112585A2 EP 00926810 A EP00926810 A EP 00926810A EP 00926810 A EP00926810 A EP 00926810A EP 1112585 A2 EP1112585 A2 EP 1112585A2
Authority
EP
European Patent Office
Prior art keywords
bimetallic
switching device
low voltage
assembly
voltage switching
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
EP00926810A
Other languages
German (de)
French (fr)
Other versions
EP1112585B1 (en
Inventor
Günter Baujan
Rudolf Baumeister
Volker Blechacz
Manfred Faust
Klaus Dauer
Lothar Winzen
Peter Willerscheidt
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
Moeller GmbH
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 Moeller GmbH, Kloeckner Moeller GmbH filed Critical Moeller GmbH
Publication of EP1112585A2 publication Critical patent/EP1112585A2/en
Application granted granted Critical
Publication of EP1112585B1 publication Critical patent/EP1112585B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H69/00—Apparatus or processes for the manufacture of emergency protective devices
    • H01H69/01—Apparatus or processes for the manufacture of emergency protective devices for calibrating or setting of devices to function under predetermined conditions
    • 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
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages
    • H01H83/223—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages with bimetal elements

Definitions

  • the invention relates to a low-voltage switching device with a bimetallic release, in particular a motor protection switch or a circuit breaker.
  • Such switching devices are to be calibrated by the manufacturer with regard to the bimetal release.
  • the existing tolerances between the bimetals of the individual phases with each other, between the bimetals and the tipping point of the pawl system to be triggered, and with regard to a required free travel of the bimetals, must be compensated for.
  • Such a bimetallic release and an associated ratchet system are described in detail in DE 42 02 049.
  • the calibration process is generally carried out in such a way that after measuring the triggering paths of the bimetallic assembly and the tipping point of the latch system, a bridge system to be actuated by the bends of the bimetals is adjusted in such a way that punchings for the engagement of the bimetals are precise in accordance with the abovementioned measurement technology to the extent that after the completion of the bimetallic assembly through the bridge system to the bimetallic release, the aforementioned tolerances are largely balanced.
  • This process of aligning the bridge system is referred to below with a standard character. With the standard sign, the tolerances are compensated for, but the assembly of the bimetallic structure loosely mounted in a lower housing part of the switching device together with the contact system and the drive system, according to US Pat. No. 5,909,194. group, the bridge system and an upper housing part required for holding and covering these parts, the risk that should not be underestimated that new tolerances arise between the bimetal group, the bridge system and the latch system.
  • the invention is therefore based on the object of eliminating the tolerances that arise during assembly of the switching device between the bimetal release and the pawl system.
  • the object is achieved according to the invention by the characterizing features of the independent claim.
  • the opening provided in the housing it is now possible to measure the bimetal assembly and the latch system in the finally installed state for the purpose of calibrating the bridge system that has not yet been installed, then mount the correspondingly calibrated bridge system and finally close the opening with the protective cover.
  • all the tolerances relevant to the bimetallic release are advantageously recorded across the entire production and assembly chain.
  • the switching device according to the invention only one assembly, namely the bridge system, has to be installed after the calibration compared to the switching devices according to the prior art.
  • An advantageous development of the invention is to snap the protective cover onto the housing.
  • Fig. 1 is a motor protection switch with a housing 2 made of molded material, consisting of a lower housing part 21 and an upper housing part 22, three input-side connection terminals 3, three opposite output-side connection terminals and an interface 4 for a rotary handle for actuating the contact system of the switching device 1 Switching device 1 shown.
  • a rectangular opening 23 is provided on the front, which is to be closed by a protective cover 24, locking means 25 being used.
  • the bimetallic release 5 is accessible through the opening 23.
  • the free ends of the bimetallic assembly 51 and the bridge system 52 consisting of the release bridge 521 interacting with the bimetallic assembly 51 and the differential lever 522 which connects to a pawl system of an invisible drive system, can be seen.
  • the bridge system 52 has not yet been installed, the bends of the bimetal assembly 51 and the tipping point of the pawl system are detected via the opening 23 by means of suitable mechanical measuring probes. On the basis of these measurement results, the corresponding cutouts are punched in the release bridge 521 for the engagement of the free ends of the bimetallic assembly 51 (standard character).
  • the bridge system 52 thus calibrated is then inserted through the opening 23 to complete the bimetallic release 5 and thus the switching device 1.
  • the protective cover 24 is then snapped onto the upper housing part 22.
  • the present invention is not limited to the embodiment described above, but also encompasses all embodiments having the same effect in the sense of the invention.
  • the invention can be modified such that the opening 23 and the cover 24 are provided on the lower housing part 21 or on both housing parts 21, 22 if required.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Thermally Actuated Switches (AREA)
  • Breakers (AREA)

Abstract

The invention relates to a low voltage switchgear with a bimetallic actuator, especially to a motor safety switch or a power switch. The aim of the invention is to improve such a low voltage switchgear so that the fabrication and assembly tolerances are widely compensated for. To this end, the two-part (21, 22) housing (2) of the switchgear (1) is provided with an opening (23) that is closed with a protective cover (24). By way of said opening (23), the bimetallic component (51) and the jack system are accessible for the purpose of measurement and a bridge system (52) of the bimetallic actuator (5) that is calibrated on the basis of the measured values can be mounted therethrough.

Description

B e s c h r e i b u n g Description
Niederspannungsschaltgerät mit BimetallauslöserLow-voltage switchgear with bimetal release
Technisches GebietTechnical field
Die Erfindung betrifft ein Niederspannungsschaltgerät mit Bimetallauslöser, ins- besondere einen Motorschutzschalter oder einen Leistungsschalter.The invention relates to a low-voltage switching device with a bimetallic release, in particular a motor protection switch or a circuit breaker.
Stand der TechnikState of the art
Derartige Schaltgeräte sind herstelierseitig hinsichtlich des Bimetallauslösers zu eichen. Es sind die vorhandenen Toleranzen zwischen den Bimetallen der einzelnen Phasen untereinander, zwischen den Bimetallen und dem Kipppunkt des auszulösenden Klinkensystems sowie hinsichtlich eines erforderlichen Leerweges der Bimetalle auszugleichen. Ein derartiger Bimetallauslöser und ein zugehöriges Klinkensystem sind in der DE 42 02 049 ausführlich beschrieben. Der Eichvorgang wird im allgemeinen so vorgenommen, dass nach messtechnischer Er assung der Auslösewege der Bimetallbaugruppe und des Kipppunktes des Klinkensystems ein von den Ausbiegungen der Bimetalle zu betätigendes Brückensystem dahingehend abgeglichen wird, dass entspre- chend der vorgenannten messtechnischen Erfassung Ausstanzungen für den Eingriff der Bimetalle genau in dem Maße vorgenommen werden, dass nach der Komplettierung der Bimetallbaugruppe durch das Brückensystem zu dem Bimetallauslöser die vorgenannten Toleranzen weitestgehend ausgeglichen sind. Dieser Vorgang des Abgleichs des Brückensystems wird im nachfolgen- den mit Stanzeichen bezeichnet. Beim Stanzeichen werden zwar die besagten Toleranzen ausgeglichen, jedoch birgt der Zusammenbau der gemäß US 5 909 194 A in einem unteren Gehäuseteil des Schaltgerätes zusammen mit dem Kontaktsystem und dem Antriebssystem lose gelagerten Bimetallbau- gruppe, des Brückensystems und eines für die Halterung und Abdeckung dieser Teile erforderlichen oberen Gehäuseteils die nicht zu unterschätzende Gefahr in sich, dass neue Toleranzen zwischen der Bimetallgruppe, dem Brückensystem und dem Klinkensystem entstehen.Such switching devices are to be calibrated by the manufacturer with regard to the bimetal release. The existing tolerances between the bimetals of the individual phases with each other, between the bimetals and the tipping point of the pawl system to be triggered, and with regard to a required free travel of the bimetals, must be compensated for. Such a bimetallic release and an associated ratchet system are described in detail in DE 42 02 049. The calibration process is generally carried out in such a way that after measuring the triggering paths of the bimetallic assembly and the tipping point of the latch system, a bridge system to be actuated by the bends of the bimetals is adjusted in such a way that punchings for the engagement of the bimetals are precise in accordance with the abovementioned measurement technology to the extent that after the completion of the bimetallic assembly through the bridge system to the bimetallic release, the aforementioned tolerances are largely balanced. This process of aligning the bridge system is referred to below with a standard character. With the standard sign, the tolerances are compensated for, but the assembly of the bimetallic structure loosely mounted in a lower housing part of the switching device together with the contact system and the drive system, according to US Pat. No. 5,909,194. group, the bridge system and an upper housing part required for holding and covering these parts, the risk that should not be underestimated that new tolerances arise between the bimetal group, the bridge system and the latch system.
Darstellung der ErfindungPresentation of the invention
Der Erfindung liegt daher die Aufgabe zugrunde, die beim Zusammenbau des Schaltgerätes entstehenden Toleranzen zwischen Bimetallauslöser und Klinkensystem auszuschalten.The invention is therefore based on the object of eliminating the tolerances that arise during assembly of the switching device between the bimetal release and the pawl system.
Ausgehend von einem Niederspannungsschaltgerät der eingangs genannten Art wird die Aufgabe erfindungsgemäß durch die kennzeichnenden Merkmale des unabhängigen Anspruches gelöst. Durch die vorgesehene Öffnung im Gehäuse ist es nunmehr möglich, die Bimetallbaugruppe und das Klinkensystem im endgültig eingebauten Zustand zwecks Eichung des noch nicht eingebauten Brückensystems messtechnisch zu erfassen, danach das dementsprechend geeichte Brückensystem zu montieren und abschließend die Öffnung durch den Schutzdeckel zu verschließen. Beim Eichen des Brückensystems werden alle für den Bimetallauslöser maßgeblichen Toleranzen vorteilhaft über die gesamte Fertigungs- und Montagekette erfasst. Bei dem erfindungsgemäßen Schaltgerät ist nach dem Eichen gegenüber den Schaltgeräten nach dem Stand der Technik nur noch eine Baugruppe, nämlich das Brückensystem, einzubauen. Eine vorteilhafte Weiterbildung der Erfindung besteht darin, den Schutzdeckel auf dem Gehäuse rastend zu befestigen.Starting from a low-voltage switching device of the type mentioned in the introduction, the object is achieved according to the invention by the characterizing features of the independent claim. Through the opening provided in the housing, it is now possible to measure the bimetal assembly and the latch system in the finally installed state for the purpose of calibrating the bridge system that has not yet been installed, then mount the correspondingly calibrated bridge system and finally close the opening with the protective cover. When calibrating the bridge system, all the tolerances relevant to the bimetallic release are advantageously recorded across the entire production and assembly chain. In the switching device according to the invention, only one assembly, namely the bridge system, has to be installed after the calibration compared to the switching devices according to the prior art. An advantageous development of the invention is to snap the protective cover onto the housing.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Weitere Vorteile der Erfindung ergeben sich aus dem folgenden Ausführungsbeispiel, wobei in der einzigen Figur 1 ein erfindungsgemäßes Niederspannungsschaltgerät dargestellt ist. Bester Weg zur Ausführung der ErfindungFurther advantages of the invention result from the following exemplary embodiment, a low-voltage switching device according to the invention being shown in FIG. 1. Best way to carry out the invention
In Fig. 1 ist als Schaltgerät 1 ein Motorschutzschalter mit einem Gehäuse 2 aus Formstoff, bestehend aus einem unteren Gehäuseteil 21 und einem oberen Gehäuseteil 22, drei zugangsseitigen Anschlussklemmen 3, drei gegenüberliegenden abgangsseitigen Anschlussklemmen sowie einer Schnittstelle 4 für einen Drehgriff zur Betätigung des Kontaktsystems des Schaltgerätes 1 dargestellt. In dem oberen Gehäuseteil 22 ist frontseitig eine rechteckige Öff- nung 23 vorgesehen, die durch einen Schutzdeckel 24 zu verschließen ist, wobei Rastmittel 25 zur Anwendung kommen. Durch die Öffnung 23 ist der Bimetallauslöser 5 zugänglich. Von dem Bimetallauslöser 5 sind die freien Enden der Bimetallbaugruppe 51 sowie das Brückensystem 52, bestehend aus der mit der Bimetallbaugruppe 51 zusammenwirkenden Auslösebrücke 521 und dem die Verbindung zu einem Klinkensystem eines nicht sichtbaren Antriebssystems herstellenden Differentialhebel 522, zu sehen. Wenn das Brük- kensystem 52 noch nicht eingebaut ist, werden über die Öffnung 23 durch geeignete mechanische Messtaster die Ausbiegungen der Bimetallbaugruppe 51 und der Kipppunkt des Klinkensystems erfasst. Aufgrund dieser Messergeb- nisse werden die entsprechenden Aussparungen in diOe Auslösebrücke 521 für den Eingriff der freien Enden der Bimetallbaugruppe 51 gestanzt (Stanzeichen). Das so geeichte Brückensystem 52 wird darauf durch die Öffnung 23 zur Vervollständigung des Bimetallauslösers 5 und damit des Schaltgerätes 1 eingesetzt. Anschließend wird der Schutzdeckel 24 auf das obere Gehäuseteil 22 aufgerastet.In Fig. 1 is a motor protection switch with a housing 2 made of molded material, consisting of a lower housing part 21 and an upper housing part 22, three input-side connection terminals 3, three opposite output-side connection terminals and an interface 4 for a rotary handle for actuating the contact system of the switching device 1 Switching device 1 shown. In the upper housing part 22, a rectangular opening 23 is provided on the front, which is to be closed by a protective cover 24, locking means 25 being used. The bimetallic release 5 is accessible through the opening 23. From the bimetallic release 5, the free ends of the bimetallic assembly 51 and the bridge system 52, consisting of the release bridge 521 interacting with the bimetallic assembly 51 and the differential lever 522 which connects to a pawl system of an invisible drive system, can be seen. If the bridge system 52 has not yet been installed, the bends of the bimetal assembly 51 and the tipping point of the pawl system are detected via the opening 23 by means of suitable mechanical measuring probes. On the basis of these measurement results, the corresponding cutouts are punched in the release bridge 521 for the engagement of the free ends of the bimetallic assembly 51 (standard character). The bridge system 52 thus calibrated is then inserted through the opening 23 to complete the bimetallic release 5 and thus the switching device 1. The protective cover 24 is then snapped onto the upper housing part 22.
Die vorliegende Erfindung ist nicht auf die vorstehend beschriebenen Ausführungsform beschränkt, sondern umfasst auch alle im Sinne der Erfindung gleichwirkenden Ausführungsformen. So lässt sich die Erfindung beispiels- weise dahingehend abwandeln, dass bei entsprechendem Erfordernis die Öffnung 23 und der Deckel 24 an dem unteren Gehäuseteil 21 oder an beiden Gehäuseteilen 21 , 22 vorgesehen ist. The present invention is not limited to the embodiment described above, but also encompasses all embodiments having the same effect in the sense of the invention. For example, the invention can be modified such that the opening 23 and the cover 24 are provided on the lower housing part 21 or on both housing parts 21, 22 if required.

Claims

A n s p r ü c h e Expectations
1. Niederspannungsschaltgerät mit Bimetallauslöser, enthaltend ein Gehäuse (2) aus Gehäuseteilen (21 , 22), in dem wenigstens der Bimetallauslöser (5) und ein durch diesen auszulösendes Klinkensystem gelagert ist, wobei der Bimetallauslöser (5) ein eichfähiges Brückensystem (52) als Verbindungsglied zwischen seiner Bimetallbaugruppe (51) und dem Klinkensystem aufweist, dadurch gekennzeichnet, dass das Gehäuse (2) eine durch einen Schutzdeckel (24) verschließbare Öffnung (23) aufweist, durch welche im soweit zusammengebauten Zustand des Schaltgerätes (1) die messtechnische Zugänglichkeit der Bimetallbaugruppe (51) und des Klinkensystems sowie die Montage des geeichten Brückensystems (52) gewährleistet ist.1. Low-voltage switching device with bimetallic release, comprising a housing (2) made of housing parts (21, 22) in which at least the bimetallic release (5) and a pawl system to be triggered are mounted, the bimetallic release (5) being a verifiable bridge system (52) Has connecting element between its bimetallic assembly (51) and the pawl system, characterized in that the housing (2) has an opening (23) which can be closed by a protective cover (24), through which, when the switching device (1) is so far assembled, the measurement accessibility of the Bimetallic assembly (51) and the pawl system and the assembly of the calibrated bridge system (52) is guaranteed.
2. Niederspannungsschaltgerät nach Anspruch 1 , dadurch gekennzeichnet, dass der Schutzdeckel (24) über Rastmittel (25) mit dem übrigen Gehäuse (2) verbindbar ist. 2. Low-voltage switching device according to claim 1, characterized in that the protective cover (24) via latching means (25) with the rest of the housing (2) can be connected.
EP00926810A 1999-04-15 2000-04-05 Low voltage switching device with bimetal trip Expired - Lifetime EP1112585B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19916988 1999-04-15
DE19916988A DE19916988A1 (en) 1999-04-15 1999-04-15 Low voltage switching device with bimetal release for e.g. motor protection switch or power switch has calibration bridge system positioned between bimetal assembly
PCT/EP2000/002997 WO2000063935A2 (en) 1999-04-15 2000-04-05 Low voltage switchgear with bimetallic actuator

Publications (2)

Publication Number Publication Date
EP1112585A2 true EP1112585A2 (en) 2001-07-04
EP1112585B1 EP1112585B1 (en) 2004-06-09

Family

ID=7904636

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00926810A Expired - Lifetime EP1112585B1 (en) 1999-04-15 2000-04-05 Low voltage switching device with bimetal trip

Country Status (5)

Country Link
US (1) US6466115B1 (en)
EP (1) EP1112585B1 (en)
CN (1) CN1178257C (en)
DE (2) DE19916988A1 (en)
WO (1) WO2000063935A2 (en)

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Publication number Priority date Publication date Assignee Title
MXPA05008750A (en) * 2003-03-17 2005-09-20 Epostal Services Inc Messaging and document management system and method.
US7627640B2 (en) * 2003-03-17 2009-12-01 Epostal Services, Inc. Messaging and document management system and method
DE102007054426B4 (en) * 2006-11-24 2010-08-05 Abb Ag Switching chamber assembly and switching device
DE102010005345B4 (en) 2010-01-21 2022-04-21 Abb Schweiz Ag Electrical switching device in modular design
EP2410554A1 (en) 2010-07-22 2012-01-25 Eaton Industries GmbH Electric Switching Device
DE202015100926U1 (en) 2015-02-26 2015-03-10 Abb Technology Ag Electrical switching device in modular design
CN109285735B (en) * 2018-10-25 2023-11-21 嘉兴弘博电气有限公司 Intelligent air switch with interconnection communication port bridging structure

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JPS6132324A (en) * 1984-07-20 1986-02-15 富士電機株式会社 Internal accessory mounting structure of wiring breaker
US4698606A (en) * 1986-06-20 1987-10-06 Westinghouse Electric Corp. Circuit breaker with adjustable thermal trip unit
US4870531A (en) * 1988-08-15 1989-09-26 General Electric Company Circuit breaker with removable display and keypad
DE4202049C1 (en) * 1992-01-27 1993-10-07 Kloeckner Moeller Gmbh Thermal trigger for electrical switchgear
DE4304772C1 (en) * 1993-02-17 1994-05-19 Kloeckner Moeller Gmbh Switch mechanism for electric motor protection switch - has spring-biased pivoted wiper between knee-lever system and movable contact bridge carrier
AU706793B2 (en) * 1996-12-31 1999-06-24 Lg Industrial Systems Co. Ltd. Separable circuit breaker
US6104273A (en) * 1999-06-09 2000-08-15 General Electric Company Calibration assembly and process for use in a circuit protective device

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Title
See references of WO0063935A2 *

Also Published As

Publication number Publication date
DE50006746D1 (en) 2004-07-15
DE19916988A1 (en) 2000-10-19
CN1310855A (en) 2001-08-29
CN1178257C (en) 2004-12-01
EP1112585B1 (en) 2004-06-09
WO2000063935A2 (en) 2000-10-26
WO2000063935A3 (en) 2001-04-12
US6466115B1 (en) 2002-10-15

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