EP0912986A1 - Dispositif cinematique d'actionnement du contact mobile, notamment dans des disjoncteurs automatiques - Google Patents

Dispositif cinematique d'actionnement du contact mobile, notamment dans des disjoncteurs automatiques

Info

Publication number
EP0912986A1
EP0912986A1 EP97939997A EP97939997A EP0912986A1 EP 0912986 A1 EP0912986 A1 EP 0912986A1 EP 97939997 A EP97939997 A EP 97939997A EP 97939997 A EP97939997 A EP 97939997A EP 0912986 A1 EP0912986 A1 EP 0912986A1
Authority
EP
European Patent Office
Prior art keywords
moving contact
actuating
kinematic
lever
control part
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
EP97939997A
Other languages
German (de)
English (en)
Other versions
EP0912986B1 (fr
Inventor
Domenico Bosatelli
Augusto Contardi
Sergio Pianezzola
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.)
Gewiss SpA
Original Assignee
Gewiss SpA
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 Gewiss SpA filed Critical Gewiss SpA
Publication of EP0912986A1 publication Critical patent/EP0912986A1/fr
Application granted granted Critical
Publication of EP0912986B1 publication Critical patent/EP0912986B1/fr
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
    • 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
    • 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
    • H01H71/1009—Interconnected mechanisms
    • H01H71/1027—Interconnected mechanisms comprising a bidirectional connecting member actuated by the opening movement of one pole to trip a neighbour pole

Definitions

  • the present invention relates to a kinematic device for actuating the moving contact, particularly for automatic electric breakers.
  • Another drawback is constituted by the fact that the kinematic systems that are currently used are generally very complicated from a structural point of view and require relatively long assembly operations which affect production costs.
  • An aim of the present invention is indeed to eliminate the above described drawbacks of the prior art.
  • a further aim of the invention is to provide a kinematic system for actuating the moving contact, particularly for automatic electric breakers, which allows to significantly reduce the dimensions used, with consequent considerable advantages as regards the opening speed of the moving contact.
  • An object of the invention is to provide a kinematic actuation system which can be produced with a limited number of components that can be easily assembled together.
  • Further object of the present invention is to provide a kinematic system for actuating the moving contact which, by virtue of its particular constructive characteristics, is capable of giving the greatest assurances of reliability and safety in use.
  • Still a further object of the present invention is to provide a kinematic actuation system which can be easily obtained starting from commonly commercially available parts and materials and is also competitive from a purely economic point of view.
  • Fig. 1 is a schematic exploded perspective view of the kinematic device for actuating the moving contact, according to the invention
  • Fig. 2 is a schematic view of the kinematic device in the position in which the contact is open;
  • Fig. 3 is a view of the kinematic device in the position in which the contact is closed;
  • Fig. 4 is a view of the kinematic device in the released position, with the contact open and the lever still arranged in closed position.
  • Fig. 5 is a schematic exploded perspective view of the kinematic device for actuating two moving contacts, according to a second aspect of the invention.
  • Fig. 6 is a schematic side partial view of the kinematic device of Fig. 5 wherein the right hand side contact is shown in the open position;
  • Fig. 7 is a schematic side partial view of the kinematic device of Fig. 5 wherein the left hand side contact is shown in the open position
  • Fig. 8 is a schematic side perspective view of the kinematic device of Fig. 5, wherein the right hand side contact is shown in the closed position;
  • Fig. 9 is a schematic side perspective view of the kinematic device of Fig. 5, wherein the left hand side contact is shown in the closed position.
  • the kinematic system for actuating the moving contact particularly for automatic electric breakers, according to the invention, includes a box-like body which is generally designated by the reference numeral 1 and is constituted by a conventional box-like body provided for coupling to conventional omega-shaped bars.
  • a motion lever generally designated by the reference numeral 2, which is pivoted to the box-like body 1 by means of a first pivot 3.
  • the motion lever 2 has a first arm 4 to which a bracket 5 is pivoted; the bracket is connected to the body 6 of an actuation lever or part, generally designated by the reference numeral 10, which can be accessed from the outside of the box-like body 1.
  • the motion lever 2 has second arms, designated by the reference numeral 7, which are pivoted to the ends of linkages 11 which are articulated, at the other end, to the first end 12 of a cross-member 13 which is substantially U- shaped .
  • the cross-member 13 is operatively connected, at its second end 14, to a moving contact 15 as will become apparent hereinafter.
  • the first end 12 of the cross-member 13 slidingly engages the slots 20, which are formed on an engagement lever 21 which is substantially U-shaped and is pivoted at the free ends of its arms by means of a second pivot 22 which is rigidly coupled to the box-like body.
  • the engagement lever has a locking tab 23 which interacts with the locking arm 30 of a control part 31, which by means of a third pivot 32 is mounted so that it can oscillate with respect to the boxlike body 1.
  • a coiled wire spring biases control part 31 against engagement lever 21.
  • the third pivot 32 also constitutes the fulcrum of the lever 15.
  • the control part has, on the opposite side with respect to the locking arm, a protrusion 35 which constitutes the coupling point for the intervention of the thermal protection device.
  • a hook-shaped body 36 is formed by the control part 31 inside the moving contact 15 and is U- shaped in transverse cross-section. The hook-shaped body 36 also provides the coupling point for the intervention of the magnetic protection device.
  • the moving core of the magnetic protection device has a wider portion which engages a fold 37 to accelerate the opening of the moving contact 15.
  • a rivetable pivot 40 is provided on the moving contact and provides the pivoting of a spring guide 41, which forms a recess 42 in which the end of the U-shaped part 13 is coupled; a spring 50 for the contact pressure that biases the moving contact closed is provided around the rivetable pivot 40.
  • a driving lever 60 interacts with a connecting arm 61, formed by the control part and has the function of achieving simultaneous disengagement if two separate automatic breakers are inserted in the same box-like body; optionally, the lever 60 can interact with the components of a laterally adjacent box-like body.
  • actuation part 10 then also changes position; this part is shown while still in the closed condition in Fig. 4 and returns by means of an elastic return system.
  • the kinematic device is provided by means of very compact and small-size parts, so that it is possible to obtain very quick disengagements, with a consequent significant reduction of arcing problems.
  • Figs. 5-7 show a double kinematic device 100 and 200, for actuating two moving contacts in an automatic electric breaker, according to a second aspect of the invention.
  • the double device will be described with reference to one side mainly, and like reference characters, added by 100 or 200, denote similar features to those of FIGs 1-4.
  • An actuation lever 110 which can be accessed from the outside of the box-like body (not illustrated) has a body 106 connected to two motion levers 102 and 202 through a bracket 105.
  • Each motion lever 102,202 is pivoted to cross-member 113,213 which is substantially U-shaped.
  • Cross-member 113,213 is operatively connected to moving contact 115,215 as will become apparent hereinafter.
  • Cross-member 113,213 engages an engagement lever 121,221 pivoted to the box-like body by means of a second pivot 122,222.
  • Engagement lever 121,221 interacts with locking arm 130,230 of control part 131,231, which is mounted so that it can oscillate with respect to the box-like body, by means of third pivot 132, 232.
  • a coiled wire spring 171,271 biases control part 131,231 against engagement lever 121,221.
  • Third pivot 132,232 also constitutes the fulcrum of lever 115,215.
  • Control part 131,231 has protrusion 135,235 which constitutes the coupling point for the intervention of a thermal protection device (not illustrated in the drawings).
  • a hook-shaped body 136,236 is formed by the control part 131,231 inside moving contact 115,215. Hook- shaped body 136,236 also provides the coupling point for the intervention of a magnetic protection device (not illustrated in the drawings).
  • a contact spring 150,250 biases the moving contact in the closed position.
  • the kinematic device according to this second aspect of the invention operates as follows.
  • Action on actuation lever 110 charges spring 172 and moves bracket 105 which is associated with lever 110 and with the two motion levers 102,202.
  • the rotation of motion levers 102,202 actuates engagement levers 121,221 by means of cross-members 113,213 which are associated with the levers through contact springs 150,250. In this manner, engagement levers 121,221 may rotate about pivot 122,222.
  • the motion of moving contacts 115,215 is transferred by means of link-rods 173,273 which are associated both with the moving contacts and with the cross-members.
  • Control part 131 and drive control part 231 are inserted in the contacts and, by rotating about pivot 132, release engagement levers 121,221 in the case of intervention of the magnetic or thermal breaker (not illustrated), both acting on the control parts.
  • the magnetic breaker acts on the control part through the magnetic bracket 174,274.
  • Magnetic bracket 174,274 slides inside a slot 175,275 provided on moving contact 115,215. In this manner the magnetic bracket has two functions: it releases control part 131,231, at the start of its motion and then drives the moving contact to the open position (illustrated in FIGs. 6 and 7) .
  • Control parts 131,231 are connected to control springs 171,271 which are adapted to re-cock engagement levers 121,221 in the case of intervention. Control parts 131,231 are also mutually connected so that one of the engagement levers disengages from one of the control parts, the other control part is released too.
  • drive control part 231 allows to interface the release motion with other possible joined modules or devices, by means of pivot 276 and is therefore capable to receive or transmit motion.
  • Moving contacts 115,215 are also associated with drive springs 177,277 that ensure the opening of the contacts.
  • the materials used, as well as the contingent shapes and dimensions may be any according to the requirements.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Electronic Switches (AREA)
  • Push-Button Switches (AREA)
  • Keying Circuit Devices (AREA)
  • Breakers (AREA)

Abstract

L'invention concerne un dispositif cinématique d'actionnement du contact mobile, notamment dans des disjoncteurs automatiques, comportant, à l'intérieur d'un corps en forme de boîte, un levier de mouvement (2) relié à un levier (10) d'actionnement du disjoncteur et pivotant sur le corps en forme de boîte au moyen d'un premier pivot (3). Le levier de mouvement (2) s'articule sur des tringleries (11) qui pivotent, à l'autre bout, sur la première extrémité (12) d'une traverse (13) fonctionnant en relation avec un contact mobile (15). La première extrémité (12) de la traverse (13) s'enclenche de manière coulissante dans un levier de prise (21) pivotant sur le corps en forme de boîte au moyen d'un deuxième pivot (22) et doté d'un bras de verrouillage (30) faisant partie d'un élément de commande (31) pivotant sur le corps en forme de boîte au moyen d'un troisième pivot (32). Le troisième pivot (32) constitue le point d'appui du contact mobile (15).
EP97939997A 1996-07-15 1997-07-15 Dispositif cinematique d'actionnement du contact mobile, notamment dans des disjoncteurs automatiques Expired - Lifetime EP0912986B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITMI961462 1996-07-15
IT96MI001462A IT1283161B1 (it) 1996-07-15 1996-07-15 Cinematismo di azionamento del contatto mobile,particolarmente per interruttori elettrici automatici
PCT/EP1997/003770 WO1998002897A1 (fr) 1996-07-15 1997-07-15 Dispositif cinematique d'actionnement du contact mobile, notamment dans des disjoncteurs automatiques

Publications (2)

Publication Number Publication Date
EP0912986A1 true EP0912986A1 (fr) 1999-05-06
EP0912986B1 EP0912986B1 (fr) 2000-02-02

Family

ID=11374585

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97939997A Expired - Lifetime EP0912986B1 (fr) 1996-07-15 1997-07-15 Dispositif cinematique d'actionnement du contact mobile, notamment dans des disjoncteurs automatiques

Country Status (6)

Country Link
EP (1) EP0912986B1 (fr)
AT (1) ATE189557T1 (fr)
AU (1) AU4201297A (fr)
DE (1) DE69701264T2 (fr)
IT (1) IT1283161B1 (fr)
WO (1) WO1998002897A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013200929A1 (de) * 2013-01-22 2014-07-24 Siemens Aktiengesellschaft Schaltmechanik für ein elektromechanisches Schaltgerät

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2889428A (en) * 1955-05-18 1959-06-02 Square D Co Multipole circuit breaker
US3671908A (en) * 1970-04-10 1972-06-20 Zinsco Electrical Products Circuit breaker
FR2626105B1 (fr) * 1988-01-20 1990-06-15 Hager Electro Appareil de protection d'installations electriques
JPH07118252B2 (ja) * 1988-06-09 1995-12-18 松下電工株式会社 リモートコントロール式回路しゃ断器

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9802897A1 *

Also Published As

Publication number Publication date
ITMI961462A1 (it) 1998-01-15
ITMI961462A0 (fr) 1996-07-15
ATE189557T1 (de) 2000-02-15
DE69701264T2 (de) 2000-06-08
AU4201297A (en) 1998-02-09
IT1283161B1 (it) 1998-04-07
DE69701264D1 (de) 2000-03-09
WO1998002897A1 (fr) 1998-01-22
EP0912986B1 (fr) 2000-02-02

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