EP0564379A1 - Schwenkhebelbetätigungsmechanismus für Schutzschalter mit Phasen- und Neutralleiter - Google Patents

Schwenkhebelbetätigungsmechanismus für Schutzschalter mit Phasen- und Neutralleiter Download PDF

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Publication number
EP0564379A1
EP0564379A1 EP93420138A EP93420138A EP0564379A1 EP 0564379 A1 EP0564379 A1 EP 0564379A1 EP 93420138 A EP93420138 A EP 93420138A EP 93420138 A EP93420138 A EP 93420138A EP 0564379 A1 EP0564379 A1 EP 0564379A1
Authority
EP
European Patent Office
Prior art keywords
contact
spring
phase
neutral
needle
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
EP93420138A
Other languages
English (en)
French (fr)
Other versions
EP0564379B1 (de
Inventor
Michel Lazareth
Noel Le Corre
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.)
Schneider Electric SE
Original Assignee
Merlin Gerin SA
Schneider Electric SE
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 Merlin Gerin SA, Schneider Electric SE filed Critical Merlin Gerin SA
Publication of EP0564379A1 publication Critical patent/EP0564379A1/de
Application granted granted Critical
Publication of EP0564379B1 publication Critical patent/EP0564379B1/de
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
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/002—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00 with provision for switching the neutral conductor
    • 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

Definitions

  • the contact pressure in the closed position of the contacts is generally provided by two springs offset transversely from one another.
  • Each spring is associated with a contact carrier to individually exert a pressure force on the corresponding contacts.
  • the incorporation of two contact pressure springs inside a common housing of width 18mm poses a problem of space for the implementation of the mechanism.
  • the object of the invention is to provide a simplified control mechanism adapted to the size of a phase and neutral circuit breaker with a common housing.
  • the mechanism according to the invention is characterized in that the elastic means comprise a spring inserted between the two contact carriers and anchored between a stud of the plate, and a balancing needle of a spreader device, said needle s' extending transversely to the line of action of the spring, being housed in two opposite cavities of the juxtaposed contact carriers.
  • the two neutral and phase contact carriers made of insulating material are mounted with clearance on a pivot to allow a relative pivoting movement relative to the plate.
  • the contact pressure spring is formed by a tension spring extending in the median plane of symmetry of the housing.
  • At least one needle support cavity has a first portion arranged in a bearing with radial orientation of the pressure force exerted by the spring and a second portion shaped in an articulation allowing adjustment of the position of the needle in the event of uneven wear of the phase and neutral contacts.
  • the specific shape of the cavities in the contact carriers makes it possible to reconcile the industrial mounting of the mechanism, with the mechanical operation of the lifter, regardless of wear or manufacturing tolerances of the phase and neutral contacts.
  • a mechanism 10 for controlling a miniature phase and neutral electric circuit breaker is housed in the internal compartment of an insulating casing 12 molded in a narrow and flat parallelepiped shape.
  • the mechanism 10 is actuated either by manual action of a lever 11 pivotally mounted between a closing position and an open position of the circuit breaker contacts, or by an automatic action of a tripping device.
  • the circuit breaker comprises a double switch member, having a movable neutral contact 14 cooperating with a fixed neutral contact 15, and a movable phase contact 16 cooperating with a fixed phase contact 17.
  • the tripping device comprises an electromagnetic trip device 13 ( FIGS. 1 and 3) sensitive to a short-circuit current, and a bimetal thermal trip device 19 (FIG. 6) sensitive to an overload current.
  • the two movable contacts 14, 16 are individually supported by two neutral and phase contact carriers 18,20 made of insulating material, mounted with radial clearance on a pivot 22 of a common drive plate 24.
  • the pivot 22 is positioned in the transverse direction in bearings 26,28 aligned and formed in the opposite walls of the housing 12, to allow a limited rotational movement of the plate 24 between the stable open position and the stable closed position contacts 14.15; 16.17.
  • the rotary plate 24 is disposed between the two contact carriers 18,20 and is fitted with drive stops (one of which is visible in FIG. 1), intended to come into engagement with the edges of the contact carriers 18,20 during opening and closing movements.
  • a trigger lever 32 articulated on a first axis 34 of the plate 24 comprises a control member 36 cooperating with the trigger device 13,19, and a retaining member 38 cooperating with a hook 40 to form a mechanical connection 41 transmission.
  • the hook 40 is pivotally mounted on a second axis 42 of the plate 24, and is mechanically connected to the lever 11 by a metal connecting bracket 44 constituting a toggle device.
  • the operation of the mechanical link 41 for triggering the mechanism 10 is described in detail in French patent 2,616,583 of the applicant.
  • the mechanical link 41 is normally in the locked position by cooperation of the retaining member 38 with the hook 40.
  • Manual actuation of the lever 11 in a given direction then causes the plate 24 to be driven. towards the closed position, or towards the open position of the contacts 14,15; 16.17.
  • the rotary plate 24 ensures the arming of a torsion-type opening spring (not shown) anchored between the plate 24 and a stop of the housing on the side opposite to the connecting bracket 44.
  • the automatic triggering of the mechanism 10 is carried out by unlocking the retaining member 38 with the hook 40 following the action of one of the triggers 13,19 causing the pivoting of the trigger lever 32 in the direction counterclockwise. This passage to the triggered position creates a break in the mechanical connection 41, followed by a relaxation of the opening spring generating the pivoting in the same direction of the plate 24 and of the contact carriers 18, 20 for the separation of the contacts 14, 15; 16.17.
  • Resetting the mechanical triggering link 41 to the locked position is automatically carried out in the open position by means of a return spring 46 (see FIG. 6), formed by an elastic tongue integral with the trigger lever 32.
  • the external lateral dimensions between the large opposite lateral faces of the housing 12 correspond to a width of eighteen millimeters.
  • the two respective axes 34, 42 of the trigger lever 32 and of the hook 40 are offset on the plate 24 relative to the pivot 22.
  • the contact pressure function of the two movable neutral 14 and phase 16 contacts on the corresponding fixed contacts 15, 17 is ensured by a single tension spring 48 associated with a lifter device 50.
  • the spring traction 48 is located substantially in the median plane of trace symmetry 52, and is inserted between the two upper arms 54,56 of the contact carriers 18,20.
  • the upper end of the spring 48 is hooked to a stud 68 of the rotary plate 24, and the pivot 22 of this rear which also serves as an axis of articulation of the contact carriers 18, 20, is located between the needle 58 and the stud 68.
  • the mounting of the insulating contact carriers 18.20 on the pivot 22 on either side of the plate 24 allows a relative pivoting movement relative to the plate 24 to ensure the contact pressure in closed position.
  • the moment of the torque exerted by the tension spring 48 tends to urge the contact holders 18,20 clockwise around the pivot 22, and the spreader device 50 ensures a balancing of the pressure forces on the two movable contacts of the neutral 14 and phase 16.
  • the width of the protrusions 64,66 is greater than that of the upper arms 54,56, and the diameter of the tension spring 48 corresponds substantially to the maximum thickness of the plate 24.
  • the small transverse spacing between the two protrusions 64,66 of two contact holders 18,20 allows the lower end of the spring 48 to be hooked onto the needle 58.
  • Each cavity 60,62 of the support of the needle 58 of the lifter device 50 comprises two opposite bearing surfaces 70,72 in the form of circular sectors separated from each other by two frustoconical recesses 74,76 (FIG. 5 ).
  • the internal diameter between the two bearing surfaces 70,72 corresponds substantially to the diameter of the cylindrical needle 58.
  • the angular positioning of the two bearing surfaces 70,72 in the cavity 60 is chosen such that the diametrical bisector plane extends substantially in a direction parallel to the line of action of the tension spring 48.
  • the bearing surface 72 upper part of each cavity 60, 62 serves as a bearing for each end of the needle 58, the pressure force exerted by the spring 48 being oriented radially towards the circular sector of the bearing surface 72.
  • the needle 58 of the lifter device 50 is first introduced into the cavity 60 of the neutral contact carrier 18, followed by the attachment of the tension spring 48 to the stud 68 of the plate 24, and on the central part of the needle 58.
  • the depth of insertion of the needle 58 into the cavity 60 of the protrusion 64, and the reaction of the pressure force of the spring 48 on the surface of support 72 maintain the transverse positioning of the needle 58 and spring 48 assembly before mounting the phase contact carrier 20.
  • the specific shape of the two cavities 60, 62 makes it possible to reconcile the industrial mounting of the mechanism 10 with the mechanical operation of the lifter device 50 independently of the uneven wear or of the dispersion of the phase and neutral contacts.
  • the use of a single contact pressure spring, arranged in the thickness of the plate 24, makes it possible to obtain a reduced bulk of the mechanism 10.
  • the cavity 62 of the phase contact carrier 20 can be arranged in a circular bearing.
  • the bimetallic strip 19 of the thermal trip device cooperates during the deflection with a drawer 80 for actuation secured to the trip lever 32.
  • the drawer 80 is produced by cutting a metal part with a flat surface , in particular a thin sheet, having at one end an orifice 82 of substantially circular fixing, intended to be introduced by clipping onto a fixed lug 84 coming from molding with the trigger lever 32 made of insulating material.
  • Opposite orifice 82 is a hook 86 against which the bimetallic strip 19 engages when it deflects to the right (FIG. 6).
  • the lug 84 of articulation of the drawer 80 is located on the control member 36 of the trigger lever 32 between the first axis 34 and the lower end cooperating with the striker of the magnetic trigger 13.
  • the contact zone of the bimetallic strip 19 with the actuating slide 80 is limited to the section of the internal edge of the hook 86. This results in a low coefficient of friction, with maximum efficiency of the thermal trip device.
  • the slide 80 for actuating the thermal trip device is located in the median plane of symmetry 52 of the contact carriers 18, 20, just like the striker of the magnetic trip device 13.
  • the thermal trip force transmitted by the bimetallic strip 19 to the drawer 80 remains concentrated in the median plane 52.
  • the clipping of the orifice 82 on the lug 84 of the trigger lever 32 eliminates any interference or antagonistic friction of the drawer 80 with other organs of the mechanism 10.
  • the thermal triggering force coming from the bimetallic strip 19 is thus reduced to the minimum to cause tripping in the event of the occurrence of an overload current.
  • the insertion of the actuating drawer 80 on the lug 84 can be carried out automatically during the assembly of the mechanism 10.
  • the lug 84 has two parallel elastic legs 88,90 separated from one another by a central slot 92, allowing the legs to be brought closer when the drawer 80 is clipped in.
  • the elasticity of the legs 88.90 causes the drawer 80 to be impermeably mounted on the lever trigger 32 thanks to the presence of locking steps at the ends of the legs.
  • the slide 80 is articulated with a slight radial clearance on the lug 84, allowing a free rotational movement relative to the trigger lever 32.

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  • Breakers (AREA)
EP19930420138 1992-03-31 1993-03-26 Schwenkhebelbetätigungsmechanismus für Schutzschalter mit Phasen- und Neutralleiter Expired - Lifetime EP0564379B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9203985 1992-03-31
FR9203985A FR2689308B1 (fr) 1992-03-31 1992-03-31 Mecanisme de commande a palonnier pour disjoncteur electrique a phase et neutre.

Publications (2)

Publication Number Publication Date
EP0564379A1 true EP0564379A1 (de) 1993-10-06
EP0564379B1 EP0564379B1 (de) 1996-06-12

Family

ID=9428372

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930420138 Expired - Lifetime EP0564379B1 (de) 1992-03-31 1993-03-26 Schwenkhebelbetätigungsmechanismus für Schutzschalter mit Phasen- und Neutralleiter

Country Status (6)

Country Link
EP (1) EP0564379B1 (de)
CN (1) CN1033833C (de)
DE (1) DE69303097T2 (de)
ES (1) ES2090929T3 (de)
FR (1) FR2689308B1 (de)
RU (1) RU2096853C1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3171385A4 (de) * 2014-07-17 2018-02-21 Chint Group Corporation Betriebsvorrichtung eines mehrpoligen miniaturschutzschalters

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100486756C (zh) * 2004-11-19 2009-05-13 杨庆来 一种高强度铜合金防爆工具模锻生产工艺
DE102006038005B4 (de) * 2006-05-22 2009-04-23 Dehn + Söhne Gmbh + Co. Kg Anschluss- und Basisteil zur Aufnahme eines steckbaren Überspannungsableiters
DE102008049507A1 (de) 2008-09-29 2010-04-01 Ellenberger & Poensgen Gmbh Miniatur-Schutzschalter
ITMI20090009A1 (it) * 2009-01-08 2010-07-09 Abb Spa Meccanismo di comando per un dispositivo di interruzione e dispositivo di interruzione comprendente tale meccanismo.
CN102136398B (zh) * 2010-01-21 2014-08-13 施耐德电器工业公司 接触器
CN104036978B (zh) * 2014-05-13 2016-06-15 宁波舜利高压开关科技有限公司 隔离带接地开关的单弹簧触头压力装置及其操动方法
CN106158529B (zh) * 2015-04-28 2018-10-23 上海电科电器科技有限公司 断路器的操作机构
KR102147056B1 (ko) * 2016-08-30 2020-08-24 지안핑 자오 차단기 브라켓
CN106971921B (zh) * 2017-04-17 2019-10-01 乐清市沃斯托电气有限公司 断路器
SI25460B (sl) * 2017-06-06 2021-11-30 Nela Razvojni Center Za Elektroindustrijo In Elektroniko, D.O.O. Izpopolnjen termično-magnetni prožilnik varnostnega električnega stikala

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0042778A1 (de) * 1980-06-19 1981-12-30 Merlin Gerin Einpol- und Nulleiter-Kleinschalter
EP0295158A1 (de) * 1987-06-09 1988-12-14 Merlin Gerin Steuermechanismus eines elektrischen Kleinschalters

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0042778A1 (de) * 1980-06-19 1981-12-30 Merlin Gerin Einpol- und Nulleiter-Kleinschalter
EP0295158A1 (de) * 1987-06-09 1988-12-14 Merlin Gerin Steuermechanismus eines elektrischen Kleinschalters

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3171385A4 (de) * 2014-07-17 2018-02-21 Chint Group Corporation Betriebsvorrichtung eines mehrpoligen miniaturschutzschalters

Also Published As

Publication number Publication date
CN1077051A (zh) 1993-10-06
FR2689308A1 (fr) 1993-10-01
DE69303097D1 (de) 1996-07-18
CN1033833C (zh) 1997-01-15
DE69303097T2 (de) 1997-01-02
RU2096853C1 (ru) 1997-11-20
FR2689308B1 (fr) 1994-05-20
ES2090929T3 (es) 1996-10-16
EP0564379B1 (de) 1996-06-12

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