EP0049209B1 - Schutzschalter kompakter Bauart mit einem Auslösestift - Google Patents

Schutzschalter kompakter Bauart mit einem Auslösestift Download PDF

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Publication number
EP0049209B1
EP0049209B1 EP81730083A EP81730083A EP0049209B1 EP 0049209 B1 EP0049209 B1 EP 0049209B1 EP 81730083 A EP81730083 A EP 81730083A EP 81730083 A EP81730083 A EP 81730083A EP 0049209 B1 EP0049209 B1 EP 0049209B1
Authority
EP
European Patent Office
Prior art keywords
tripping
housing
pin
protective switch
groove
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
Application number
EP81730083A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0049209A3 (en
EP0049209A2 (de
Inventor
Werner Ing. Grad. Troebel
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to AT81730083T priority Critical patent/ATE13107T1/de
Publication of EP0049209A2 publication Critical patent/EP0049209A2/de
Publication of EP0049209A3 publication Critical patent/EP0049209A3/de
Application granted granted Critical
Publication of EP0049209B1 publication Critical patent/EP0049209B1/de
Expired 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/126—Automatic release mechanisms with or without manual release actuated by dismounting of circuit breaker or removal of part of circuit breaker

Definitions

  • the invention relates to a circuit breaker of compact design with an insulating housing, which has an upper part with an opening for the passage of an actuating handle and a lower part provided for resting on a fastening or mounting surface, and which has a switching mechanism and a release shaft interacting with it. which can be actuated except by current-dependent tripping elements by means of a tripping pin which emerges on the underside of the lower part and is displaceably guided in the housing against spring force.
  • a circuit breaker of this type emerges from EP-A1-0 035 083 and is part of the prior art in accordance with Article 54 (3), (4) EPC.
  • the release pin is used to inevitably trigger the circuit breaker when it is removed from its mounting surface.
  • An important area of application of the trip pins mentioned are therefore circuit breakers in a pluggable design, in the case of which arcing must be avoided when disconnecting contacts or removing them from a plug base.
  • the release pins are dimensioned in such a way that the switching mechanism is triggered with certainty before the connection pieces of the circuit breaker disengage from the isolating contacts or plug bases.
  • the invention has for its object to provide such a space-saving arrangement of a trigger pin of the type mentioned, which enables the use of trigger pins even with circuit breakers with maximum use of space in their housing.
  • this object is achieved with a circuit breaker of the type mentioned at the outset in that the trigger pin is mounted in a groove of an outer wall of the housing which is open to the interior of the housing and has an offset near the trigger shaft and on the bent part has an approach which interacts with the trigger shaft . Due to the mounting in the groove, the release pin is guided past the other components of the circuit breaker, which allows the previous structure to be retained in full. This also applies to the trigger shaft, because the required mechanical interaction is made possible by the cranking of the trigger pin. In addition, the offset allows within certain limits the arrangement of the groove at a location that appears favorable due to the internal geometry of the circuit breaker and the mechanical strength.
  • a recess can be arranged for receiving the end of a helical compression spring which prestresses the release pin in the direction of the release, in the windings of which the release pin engages with one end. In this way, a flexible guide is created with respect to the upper part of the housing, which effects a tolerance compensation.
  • the approach of the release pin can also serve as an abutment for the helical compression spring and then fulfills a second function in addition to acting on the release shaft.
  • the groove provided for guiding the release pin can only be provided in the lower part of the housing and can have boundary surfaces which, together with at least one extension of the release pin, limit rotation of the release pin in the groove.
  • the approach just explained can limit the stroke of the trigger pin when the circuit breaker is lifted from its fastening or mounting surface by a stop on a counter surface of the housing to a sufficient extent to actuate the trigger shaft.
  • a dual function is achieved through a sensible shaping of the release pin.
  • the circuit breaker 1 in Fig. 1 which may have a structure as described approximately in DE-A-2 816 352, has a housing 2 made of an insulating material with an upper part 3 and a lower part 4, on the end faces of which in the present example with Knife contacts 5 and 6 provided connecting devices 7 and 10 are arranged.
  • An actuating handle 11 protrudes from an opening in the upper part 3 of the housing 2 and is used to switch the circuit breaker 1 on and off manually.
  • the circuit breaker can also be triggered automatically by overcurrent and short-circuit releases.
  • 1 shows a bimetallic strip 12 of the components of the release system, which is connected at its lower end to a heating conductor 13 and runs approximately parallel to it at a short distance.
  • the heating conductor 13 is ver with a conductor piece 14 bound, which is attached directly to the connecting device 7.
  • the arrangement consisting of heating conductor and bimetallic strip is located between the legs of a U-shaped magnetic yoke 15, with the pole surfaces of which a release armature 16 pivotably mounted in the lower part 4 of the housing 2 interacts.
  • the bimetallic strip 12 and the release armature 16 serve to influence a release shaft 17, which is connected in a manner not shown to the switching mechanism via intermediate members. Details of this arrangement are e.g. B. from the mentioned publication.
  • the circuit breaker 1 is provided with a trigger pin 20 which is slidably mounted in a groove 21 of the housing 2.
  • the groove 21 is located in an outer wall 22 (FIG. 2) of the lower part 4 of the housing 2 and has a cross section such that the trigger pin 20, which is of circular cross section, is approximately flush with the inner surface 23 of the outer wall 22.
  • In the lower part 4 there is a bore 18 through which the trigger pin passes. In the idle state it lies with the protruding end 24 on the assembly surface 25 shown in broken lines, e.g. the base plate of a plug-in base.
  • the trigger pin 20 is provided with an offset 26, through which the upper part 27 of the trigger pin 20 both after the interior of the housing 2 and laterally offset.
  • an extension 30 which, in the rest position shown, is at a distance from an extension 31 of the release shaft 17 and at the same time forms an abutment of the lower end of a helical compression spring 32.
  • the opposite end of this spring is located in a recess 33 of the upper part 3 of the housing 2.
  • the release pin 20 When inserted into the groove 21, the release pin 20 inevitably takes the direction of the upper part required for the interaction of the extension 30 with the release shaft 17 and the engagement in the helical compression spring 32 27 a.
  • the release pin 20 In the idle state shown in FIG. 1, the release pin 20 is held against the action of the helical compression spring 32 in a position in which the extension 30 is at a distance from the extension 31 of the release shaft 17.
  • the trigger pin 20 moves to the same extent under the influence of the helical compression spring 32 and actuates the trigger shaft 17 with its extension 30, even before the knife contacts 5 and 6 from the ones not shown , stationary counter contacts interacting with them can emerge.
  • the rotation of the trigger shaft then releases the switching mechanism and thus opens the switching contacts.
  • the trigger pin 20 therefore has the function of a safety device, which prevents arcing of the knife contacts 5 and 6 and brings about a safe interruption of the circuit inside the circuit breaker 1 for the operator.
  • the trigger pin has proven to be advantageous to produce the trigger pin as a uniform body from a suitable plastic by injection molding. It gets its final shape in one operation, has good mechanical strength and avoids insulation problems inside the circuit breaker.

Landscapes

  • Breakers (AREA)
  • Push-Button Switches (AREA)
EP81730083A 1980-09-30 1981-09-01 Schutzschalter kompakter Bauart mit einem Auslösestift Expired EP0049209B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81730083T ATE13107T1 (de) 1980-09-30 1981-09-01 Schutzschalter kompakter bauart mit einem ausloesestift.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3037355 1980-09-30
DE3037355A DE3037355C2 (de) 1980-09-30 1980-09-30 Schutzschalter kompakter Bauart mit einem Auslösestift

Publications (3)

Publication Number Publication Date
EP0049209A2 EP0049209A2 (de) 1982-04-07
EP0049209A3 EP0049209A3 (en) 1982-12-29
EP0049209B1 true EP0049209B1 (de) 1985-05-02

Family

ID=6113486

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81730083A Expired EP0049209B1 (de) 1980-09-30 1981-09-01 Schutzschalter kompakter Bauart mit einem Auslösestift

Country Status (5)

Country Link
EP (1) EP0049209B1 (es)
JP (1) JPS5790836A (es)
AT (1) ATE13107T1 (es)
DE (1) DE3037355C2 (es)
ES (1) ES8206908A1 (es)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3101532C2 (de) * 1981-01-15 1984-11-29 Siemens AG, 1000 Berlin und 8000 München Stecksockel für Niederspannungs-Schutzschalter
DE3526336A1 (de) * 1985-07-23 1987-01-29 Weber Ag Fab Elektro Zweipoliger schutzschalter mit mechanischem sicherheitsausloeser
US4829278A (en) * 1988-08-03 1989-05-09 Westinghouse Electric Corp. Circuit breaker trip bar interlock
DE8905506U1 (de) * 1989-05-02 1990-09-06 Siemens AG, 1000 Berlin und 8000 München Handbetätigbarer Schutzschalter
US4963846A (en) * 1989-08-04 1990-10-16 Westinghouse Electric Corp. Trip interlock design
GB9105111D0 (en) * 1991-03-11 1991-04-24 Otter Controls Ltd Improvements relating to thermally-responsive switches
DE4138183A1 (de) * 1991-11-15 1993-05-19 Siemens Ag Ausloesevorrichtung fuer schaltgeraete auf stecksockel
FR2690563B1 (fr) * 1992-04-23 1997-05-09 Merlin Gerin Disjoncteur debrochable a boitier moule.
DE69316952T2 (de) * 1992-09-28 1998-06-25 Mitsubishi Electric Corp Schutzschalter
DE19512830A1 (de) * 1995-04-06 1996-10-10 Aeg Niederspannungstech Gmbh Verriegelungsgerät
DE29506151U1 (de) * 1995-04-08 1995-06-22 Klöckner-Moeller GmbH, 53115 Bonn Sicherungsvorrichtung für ein auf eine Montagefläche montierbares Schaltgerät mit Schaltschloß

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3590180A (en) * 1970-02-06 1971-06-29 Square D Co Manually operated toggle-acting switch having a means for preventing assembly of the switch with the contacts of the switch in a circuit-closing condition
US3688237A (en) * 1970-04-13 1972-08-29 Westinghouse Electric Corp Fused circuit breaker
JPS5625156Y2 (es) * 1976-01-29 1981-06-13
US4068200A (en) * 1976-04-28 1978-01-10 Gould Inc. Combination cover interlock and trip actuator
DE2816352C2 (de) * 1978-04-12 1982-12-16 Siemens AG, 1000 Berlin und 8000 München Niederspannungs-Leistungsschalter mit Lichtbogenraum und Schaltmechanismus
DE3008249C2 (de) * 1980-02-29 1984-04-12 Siemens AG, 1000 Berlin und 8000 München Schutzschalter mit einem von Hand bewegbaren Auslöseorgan

Also Published As

Publication number Publication date
EP0049209A3 (en) 1982-12-29
ES505870A0 (es) 1982-08-16
DE3037355A1 (de) 1982-04-29
JPS5790836A (en) 1982-06-05
ES8206908A1 (es) 1982-08-16
EP0049209A2 (de) 1982-04-07
ATE13107T1 (de) 1985-05-15
DE3037355C2 (de) 1982-11-04

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