EP0037295B1 - Disjoncteur rapide équipé d'un dispositif antichoc - Google Patents

Disjoncteur rapide équipé d'un dispositif antichoc Download PDF

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Publication number
EP0037295B1
EP0037295B1 EP19810400337 EP81400337A EP0037295B1 EP 0037295 B1 EP0037295 B1 EP 0037295B1 EP 19810400337 EP19810400337 EP 19810400337 EP 81400337 A EP81400337 A EP 81400337A EP 0037295 B1 EP0037295 B1 EP 0037295B1
Authority
EP
European Patent Office
Prior art keywords
disc
unlatch
front face
winding
draw
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
EP19810400337
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0037295A1 (fr
Inventor
Dominique Ferrucci
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.)
Merlin Gerin SA
Original Assignee
Merlin Gerin SA
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 filed Critical Merlin Gerin SA
Publication of EP0037295A1 publication Critical patent/EP0037295A1/fr
Application granted granted Critical
Publication of EP0037295B1 publication Critical patent/EP0037295B1/fr
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
    • H01H71/1054—Means for avoiding unauthorised release
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/088—Electromagnets; Actuators including electromagnets with armatures provided with means for absorbing shocks

Definitions

  • the invention relates to a rapid switch comprising a device for controlling the opening of the contacts by a Thomson effect propellant member requiring rapid movement of the moving element in the opening direction and a device for locking the moving element in open position, provided with an unlocking control having a conductive unlocking disc disposed in the rest position facing and at a small distance from the front face of an unlocking coil so as to be repelled during the supply of said unlocking coil, in the unlocked position.
  • a known switch or circuit breaker of the type mentioned (French patent 2,377,087) allows a limitation of the short-circuit currents by rapid opening of the contacts and a holding in the open position by a locking device controlled by Thomson effect opposing the action of a closing spring.
  • the sudden commands essential for rapid movement generate vibrations and shocks which can be the cause of untimely maneuvers, for example unlocking.
  • the shock caused by the rapid opening of the contacts can be transmitted via the unlocking coil to the unlocking disc, which, coming into the unlocking position, prevents the locking of the moving element, which returns to the closed position. .
  • the object of the present invention is to remedy this drawback and to allow the production of a fast switch with reliable operation.
  • the switch according to the invention is characterized in that it further comprises an anti-shock device comprising a return spring cooperating with the unlocking disc and whose return action of the unlocking disc, rusting in the rest position is limited by a stop arranged so as to leave a slight clearance between the front face of the coil and the opposite disc.
  • an anti-shock device comprising a return spring cooperating with the unlocking disc and whose return action of the unlocking disc, rusting in the rest position is limited by a stop arranged so as to leave a slight clearance between the front face of the coil and the opposite disc.
  • the return spring of the conductive disc in the rest position preferably acts on the head of a pin bearing on the front face of the coil.
  • the length or height of the pin is slightly greater than that of the disc to define the clearance between the disc and the coil with great precision.
  • a spring with a force noticeably weaker than that of the return spring biases the disc away from the coil.
  • the pin transmits a shock directly to the high-intensity return spring, which contributes to the absorption of the shock.
  • a plurality of pins and return springs can of course be distributed circumferentially on the disc, the pins passing through holes made in this disc.
  • the anti-shock device comprises pins 28 each having a stud 32 passing through an orifice formed in the disc 24 and a head 30 held in abutment of the disc 24 by a return spring 34.
  • the length of the stud 32 is slightly greater than the thickness of the disc 24, so that the end of the stud 32 protrudes from the underside of the disc 24 and comes into abutment from the front face of the coil 26, leaving a small gap 36 between the disc 24 and the coil 26.
  • a spring spacing 38 is interposed between the coil 26 and the disc 24, so as to urge the latter towards the top in the figure in support of the heads 30 of the pins 28.
  • the force of the return springs 34 is transmitted by the pins 28, in support of the front face of the coil 26, directly to the latter.
  • the moving part, constituted by the striker 22 and the disc 24, is urged upwards by the spacer spring 38, the force of which is considerably less than that of the return springs 34.
  • the thickness of the gap 36 can be extremely small, for example a few tenths of a millimeter, this gap 36 nevertheless avoiding any mechanical contact between the parts 26 and 24. It is clear that two or more pins 28 can be distributed circumferentially from the disc 24 and that the pins 32 can be in contact with the metal carcass of the coil 26.
  • the shockproof device is particularly simple and in no way affects the operation of the switch. It is clear that the head 30 of the pin 28 constitutes a movable stop which frames with the fixed stop, constituted by the coil 26, the conductive disc 24 with little play, the displacement of the pin 28 in the direction of the coil 26 being limited by the pin 32.
  • the unidirectional limitation of the movement of the movable stop 30 can obviously be carried out in any other operating manner.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Security & Cryptography (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Push-Button Switches (AREA)
  • Electromagnets (AREA)
EP19810400337 1980-03-31 1981-03-04 Disjoncteur rapide équipé d'un dispositif antichoc Expired EP0037295B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8007285 1980-03-31
FR8007285A FR2479549A1 (fr) 1980-03-31 1980-03-31 Dispositif antichoc, notamment pour un appareillage electrique

Publications (2)

Publication Number Publication Date
EP0037295A1 EP0037295A1 (fr) 1981-10-07
EP0037295B1 true EP0037295B1 (fr) 1984-02-15

Family

ID=9240387

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810400337 Expired EP0037295B1 (fr) 1980-03-31 1981-03-04 Disjoncteur rapide équipé d'un dispositif antichoc

Country Status (4)

Country Link
EP (1) EP0037295B1 (show.php)
JP (1) JPS56152132A (show.php)
DE (1) DE3162200D1 (show.php)
FR (1) FR2479549A1 (show.php)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104779092B (zh) * 2015-04-01 2017-03-22 国家电网公司 利用波的径向非直线传播减弱操动机构振动的结构及方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2399517A (en) * 1944-08-22 1946-04-30 Gen Electric Shockproof electromagnet
US2821596A (en) * 1954-06-21 1958-01-28 Westinghouse Electric Corp Trip device for circuit breakers
FR2377087A1 (fr) * 1977-01-07 1978-08-04 Merlin Gerin Disjoncteur rapide a structure modulaire
FR2377086A1 (fr) * 1977-01-07 1978-08-04 Merlin Gerin Disjoncteur rapide limiteur a circuit electronique de commande

Also Published As

Publication number Publication date
FR2479549A1 (fr) 1981-10-02
JPS6347096B2 (show.php) 1988-09-20
FR2479549B1 (show.php) 1982-07-16
DE3162200D1 (en) 1984-03-22
EP0037295A1 (fr) 1981-10-07
JPS56152132A (en) 1981-11-25

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