EP1212772B1 - Appareil de commutation electromagnetique - Google Patents

Appareil de commutation electromagnetique Download PDF

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Publication number
EP1212772B1
EP1212772B1 EP00963966A EP00963966A EP1212772B1 EP 1212772 B1 EP1212772 B1 EP 1212772B1 EP 00963966 A EP00963966 A EP 00963966A EP 00963966 A EP00963966 A EP 00963966A EP 1212772 B1 EP1212772 B1 EP 1212772B1
Authority
EP
European Patent Office
Prior art keywords
contact
driver
contact bridge
break
switching device
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 - Lifetime
Application number
EP00963966A
Other languages
German (de)
English (en)
Other versions
EP1212772A1 (fr
Inventor
Kurt Held
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
Publication of EP1212772A1 publication Critical patent/EP1212772A1/fr
Application granted granted Critical
Publication of EP1212772B1 publication Critical patent/EP1212772B1/fr
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
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
    • H01H47/04—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for holding armature in attracted position, e.g. when initial energising circuit is interrupted; for maintaining armature in attracted position, e.g. with reduced energising current
    • H01H47/10—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for holding armature in attracted position, e.g. when initial energising circuit is interrupted; for maintaining armature in attracted position, e.g. with reduced energising current by switching-in or -out impedance external to the relay winding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
    • H01H50/66—Driving arrangements between movable part of magnetic circuit and contact with lost motion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/02—Energy stored by the attraction or repulsion of magnetic parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/541—Auxiliary contact devices

Definitions

  • the present invention relates to an electromagnetic Switchgear with at least one drive coil, when applied a contact driver with a starting current moves from a rest position into an actuation position, wherein the contact driver has an opening driving element, by means of this when moving the contact carrier in the operating position when reaching between the Rest position and the operating position lying open driving position a contact bridge of an opener of counter contacts the opener is lifted off.
  • Such an electromagnetic switching device is general known.
  • the contact bridge is also in the actuation position constantly against a reset element Opening driver element pressed.
  • the contact bridge When returning the The contact bridge in the rest position is the contact bridge therefore when the opening take-off position is reached again the counter contacts lowered. But in some applications such a lowering when the opening driving position is reached undesirable. Rather, the switching behavior of the Have a hysteresis.
  • the NC contact If the NC contact is switched without hysteresis, becomes the opener when the opening driving position is reached closed again and thus the drive coil immediately again acted upon by the starting current. This results in a tightening of the contact person and thus opening again of the opener. Because of this constant switching of the current, with which the drive coil is loaded, it can happen that the main contacts flutter or against each other without pressure issue. This leads to great wear and tear on the Main contacts, possibly even to weld the Main contacts.
  • the object of the present invention is an electromagnetic To create switching device in which the break contact can be operated with a hysteresis.
  • the contact driver Has locking driving element, by means of which when moving of the contact person in the rest position when reached one between the inoperative position and the open driving position lying contact position the contact bridge is moved to the counter contacts and that the opener a holding device is assigned to the contact bridge holds in an open position in which the contact bridge from the counter contacts is lifted as long as the contact driver from the opening driving position to the closing driving position is moved.
  • the holding device is particularly simple if the holding device is designed as a magnetic device and the contact bridge is at least partially made of a ferromagnetic Material exists.
  • the magnetic device is particularly effective.
  • the magnetic device is structurally special simply trained. In addition, this works from the magnetic device created stray field as a blowing field for any arcs that occur when the contact bridge is lifted off the Mating contacts.
  • the magnetic device exercises on the contact bridge Tightening and holding force. This is particularly true for those at risk of vibration Applications of importance.
  • the opening driving element is arranged such that the contact bridge to an intermediate lifting position of the counter contacts, and the holding device in such a way is designed so that the contact bridge from the intermediate lifting position is transferred to the open position simple way the risk of damage to the contact bridge avoided when transferring to the open position.
  • the closing driving element is arranged such that it the contact bridge into an intermediate lowering position from the Deflects open position, and the contact bridge a reset element is assigned that the contact bridge from the Lower intermediate position is lowered to the counter contacts in a simple way the risk of damage to the contact bridge avoided when lowering onto the counter contacts.
  • the return element is a return spring educated.
  • the return spring can, for example on the one hand on the contact bridge and on the other hand in relation to one support of the switchgear stationary bearing.
  • the break contact has a current setting device for the Drive coil is connected such that when opening or Closing the opener, the current is changed with which is applied to the drive coil results in particular simple way of switching the electromagnetic Switchgear from pull-in to holding current.
  • the switching device just before Reaching the actuation position from tightening to holding current switch and the starting current just before reaching the Switch on the rest position again. It is despite taking off the contact bridge from the mating contacts just before Reaching the actuation position a large distance of the contact bridge reachable from the counter contacts, so that none There is a risk of a non-extinguishing arc.
  • an electromagnetic switching device has a drive coil 1. If an actuation command is given to a current setting device 2 for the drive coil 1, the current setting device 2 applies a current I to the drive coil 1.
  • the current I is at least the size of a starting current I A.
  • a contact driver 3 - shown only schematically in FIG. 1 - is moved from a rest position R into an actuation position B.
  • the opener 5 bridges a resistor 6.
  • the drive coil 1 is therefore only connected to the current setting device 2 via the resistor 6, but no longer without resistance via the opener 5. Therefore, the current I drops to a holding current I H when the opener 5 is opened. Conversely, when the opener 5 closes, the current I increases again to the starting current I A.
  • the opener 5 is thus connected to the current setting device 2 in such a way that when the opener 5 is opened or closed a change in the current I with which the drive coil 1 is applied takes place.
  • the contact driver 3 has an opening driving element 7 on.
  • the opening driving element 7 is formed as a driving surface according to the embodiment.
  • a contact bridge is formed by means of the opening driving element 7 8 of the opener 5 is lifted from counter contacts 9 of the opener 5, when the contact driver 3 in the operating position B is moved. The contact bridge 8 is only then lifted from the mating contacts 9 when the contact driver 3 reaches an opening driving position M1.
  • the contact bridge 8 is lifted off against the force of a Reset element 10, which is shown in FIGS 2 to 4 as a return spring is trained.
  • the return spring 10 is supported on the one hand on the contact bridge 8 and on the other a bearing 11, which is stationary with respect to the switching device is.
  • the return spring 10 is to the side by suitable, generally known guide elements performed. Therefore, these are not shown for the sake of clarity.
  • the opening driving element 7 arranged such that it is the contact bridge 8 in an intermediate lifting position Z1 lifts off. If the contact bridge 8 has reached the intermediate lifting position Z1, it is one exposed to magnetic force from a magnetic device 12 is exercised on them.
  • the magnetic device 12 serves as a holding device 12 and is assigned to the opener 5.
  • the magnet device has two permanent magnets 13, 14. She is therefore designed as a permanent magnet device. One each the permanent magnet 13, 14 acts on one of two end regions 15, 16 of the contact bridge 8.
  • the contact bridge 8 exists at least partially of a ferromagnetic material. In particular, the contact bridge 8 has a rear side 17, which faces away from the counter-contacts 9 and from a ferromagnetic Material exists.
  • the reset element 10 and the magnetic device 12 are matched to each other and the intermediate lifting position Z1 selected such that in the intermediate lifting position Z1 exerted by the magnetic device 12 on the contact bridge 8 magnetic force is greater than the restoring force, which the restoring element 10 exerts on the contact bridge 8.
  • the magnet device 12 therefore transfers the contact bridge from the intermediate lifting position Z1 to an open position, in which the contact bridge 8 bears against the permanent magnets 13, 14 and is lifted from the counter contacts 9.
  • the contact driver 3 When the holding current I H drops below a minimum value (switching device switched off, supply voltage drops), the restoring force outweighs the holding torque applied by the drive coil 1. As a result, the contact driver 3 is moved from the actuation position B to the rest position R.
  • the contact driver 3 has a closing driving element 18.
  • the closing driver element 18 moves the contact bridge 8 towards the counter contacts 9 when the contact driver 3 is moved into the rest position R.
  • the contact bridge 8 is only lifted from the magnet device 12 when the contact driver 3 reaches a closing driving position M2.
  • the contact bridge 8 is previously held in the open position by the magnet device 12. Only then is the contact bridge 8 moved towards the counter contacts 9.
  • the closing driving element is 18 arranged such that it is the contact bridge 8th down to an intermediate lowering position Z2 from the open position deflects.
  • the intermediate lowering position Z2 the the restoring force exerted by the restoring element 10 the magnetic device 12 applied magnetic force.
  • the reset element 10 therefore lowers the contact bridge 8 from the intermediate lowering position Z2 on the counter contacts 9.
  • FIG. 5 shows a displacement path s of the contact driver to the right 3 plotted, a distance a of the contact bridge upwards 8 from the mating contacts 9.
  • the contact driver 3 from the rest position R in the operating position B and be transferred back.
  • the switching behavior of the opener 5 a clear hysteresis. It can also be seen that the opening of the opener 5 before reaching actuation position B and closing of the opener 5 takes place before reaching the rest position R. and that the opening driving position M1 closer to the actuating position B of Kunststoffmitrehmers 3 lies as that Locking position M2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Valve Device For Special Equipments (AREA)

Claims (10)

  1. Appareil de commutation électromagnétique comportant au moins une bobine d'entraínement (1) qui, lorsqu'un courant d'actionnement (IA) est appliqué, déplace un entraíneur de contact (3) d'une position de repos (R) à une position d'actionnement (B), l'entraíneur de contact (3) comportant un élément d'entraínement d'ouverture (7) au moyen duquel, lors du déplacement de l'entraíneur de contact (3) dans la position d'actionnement (B), un pont de contact (8) d'un contact de repos (5) est écarté de contacts complémentaires (9) du contact de repos (5) lorsqu'une position d'entraínement d'ouverture (M1) située entre la position de repos (R) et la position d'actionnement (B) est atteinte,
       caractérisé par le fait que l'entraíneur de contact (3) comporte un élément d'entraínement de fermeture (18) au moyen duquel, lors du déplacement de l'entraíneur de contact (3) dans la position de repos (R), le pont de contact (8) est déplacé vers les contacts complémentaires (9) lorsqu'une position d'entraínement de fermeture (M2) située entre la position de repos (R) et la position d'entraínement d'ouverture (M1) est atteinte et qu'il est associé au contact de repos (5) un dispositif de maintien (12) qui maintient le pont de contact (8) dans une position d'ouverture dans laquelle le pont de contact (8) est écarté des contacts complémentaires (9) tant que l'entraíneur de contact (3) est déplacé de la position d'entraínement d'ouverture (M1) à la position d'entraínement de fermeture (M2).
  2. Appareil de commutation selon la revendication 1,
       caractérisé par le fait que le dispositif de maintien (12) est conçu comme un dispositif magnétique (12) et que le pont de contact (8) est constitué au moins en partie d'un matériau ferromagnétique.
  3. Appareil de commutation selon la revendication 2,
       caractérisé par le fait que le dispositif magnétique (12) est conçu comme un dispositif magnétique permanent (12).
  4. Appareil de commutation selon la revendication 2 ou 3,
       caractérisé par le fait que le dispositif magnétique (12) comporte deux aimants (13, 14) et que, à chaque fois, l'un des aimants (13, 14) agit sur l'une des deux extrémités (15, 16) du pont de contact (8).
  5. Appareil de commutation selon la revendication 2, 3 ou 4,
       caractérisé par le fait que le pont de contact (8) comporte un côté arrière (17) qui est à l'opposé des contacts complémentaires (9) et qui est en un matériau ferromagnétique.
  6. Appareil de commutation selon l'une des revendications précédentes,
       caractérisé par le fait que l'élément d'entraínement d'ouverture (7) est disposé de telle sorte qu'il écarte le pont de contact (8) des contacts complémentaires (9) jusque dans une position intermédiaire d'écartement (Z1) et que le dispositif de maintien (12) est conçu de telle sorte qu'il fait passer le pont de contact (8) de la position intermédiaire d'écartement (Z1) à la position d'ouverture.
  7. Appareil de commutation selon l'une des revendications précédentes,
       caractérisé par le fait que l'élément d'entraínement de fermeture (18) est disposé de telle sorte qu'il dévie le pont de contact (8) à partir de la position d'ouverture jusque dans une position intermédiaire d'abaissement (Z2) et qu'il est associé au pont de contact (8) un élément de rappel (10) qui abaisse le pont de contact (8) à partir de la position intermédiaire d'abaissement (Z2) sur les contacts complémentaires (9).
  8. Appareil de commutation selon la revendication 7,
       caractérisé par le fait que l'élément de rappel (10) est conçu comme un ressort de rappel (10).
  9. Appareil de commutation selon la revendication 8,
       caractérisé par le fait que le ressort de rappel (10) s'appuie d'une part au pont de contact (8) et d'autre part à un support (11) fixe par rapport à l'appareil de commutation.
  10. Appareil de commutation selon l'une des revendications précédentes,
       caractérisé par le fait que le contact de repos (5) est relié à un dispositif de réglage de courant (2) pour la bobine d'entraínement (1) de telle sorte qu'il se produit lors de l'ouverture ou de la fermeture du contact de repos (5) une variation du courant (I) avec lequel la bobine d'entraínement (1) est alimentée.
EP00963966A 1999-09-16 2000-09-06 Appareil de commutation electromagnetique Expired - Lifetime EP1212772B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19944462A DE19944462C1 (de) 1999-09-16 1999-09-16 Elektromagnetisches Schaltgerät
DE19944462 1999-09-16
PCT/DE2000/003076 WO2001020632A1 (fr) 1999-09-16 2000-09-06 Appareil de commutation electromagnetique

Publications (2)

Publication Number Publication Date
EP1212772A1 EP1212772A1 (fr) 2002-06-12
EP1212772B1 true EP1212772B1 (fr) 2003-08-06

Family

ID=7922276

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00963966A Expired - Lifetime EP1212772B1 (fr) 1999-09-16 2000-09-06 Appareil de commutation electromagnetique

Country Status (4)

Country Link
EP (1) EP1212772B1 (fr)
CN (1) CN1214427C (fr)
DE (2) DE19944462C1 (fr)
WO (1) WO2001020632A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2854492B1 (fr) * 2003-04-29 2008-10-17 Schneider Electric Ind Sas Dispositif de commande a hysteresis

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3713055A (en) * 1971-06-25 1973-01-23 Cutler Hammer Inc Auxiliary contact system for electromagnetic switching devices
DE3433838C2 (de) * 1983-09-19 1993-10-14 Mitsubishi Electric Corp Schaltgerät
FR2588691B1 (fr) * 1985-10-14 1990-11-30 Hager Electro Perfectionnement aux telerupteurs electriques
DE3540460A1 (de) * 1985-11-14 1987-05-21 Siemens Ag Elektromagnetisches schaltgeraet

Also Published As

Publication number Publication date
CN1214427C (zh) 2005-08-10
EP1212772A1 (fr) 2002-06-12
WO2001020632A1 (fr) 2001-03-22
DE19944462C1 (de) 2001-05-31
DE50003215D1 (de) 2003-09-11
CN1372693A (zh) 2002-10-02

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