EP0736887B1 - Assemblage de contacts électriques - Google Patents

Assemblage de contacts électriques Download PDF

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Publication number
EP0736887B1
EP0736887B1 EP96104820A EP96104820A EP0736887B1 EP 0736887 B1 EP0736887 B1 EP 0736887B1 EP 96104820 A EP96104820 A EP 96104820A EP 96104820 A EP96104820 A EP 96104820A EP 0736887 B1 EP0736887 B1 EP 0736887B1
Authority
EP
European Patent Office
Prior art keywords
contact
arrangement
contact carrier
bridge
carrier
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
EP96104820A
Other languages
German (de)
English (en)
Other versions
EP0736887A3 (fr
EP0736887A2 (fr
Inventor
William L. Weber
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.)
Tyco Electromechanical Components Inc
Original Assignee
Tyco Electronics Corp
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 Tyco Electronics Corp filed Critical Tyco Electronics Corp
Publication of EP0736887A2 publication Critical patent/EP0736887A2/fr
Publication of EP0736887A3 publication Critical patent/EP0736887A3/fr
Application granted granted Critical
Publication of EP0736887B1 publication Critical patent/EP0736887B1/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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/46—Means for extinguishing or preventing arc between current-carrying parts using arcing horns
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet

Definitions

  • the invention relates to an electrical contact arrangement for a switching device with a fixed contact carrier arrangement and a movable contact carrier assembly, each bear opposite contacts, the movable contact carrier arrangement by an actuator towards the fixed contact carrier arrangement is movable to interconnect the contacts, and with at least one arc discharge device, which by one of the contact arrangements in the direction of the other contact arrangement projects.
  • the invention is applied in Switchgear, especially in electromagnetic relays or the like for switching alternating or direct currents.
  • DE-A-29 shows 16 276 an electrical contact arrangement in which the two Diverter plates in the form of beads on both ends of the Bridge contact carrier are arranged, being in the middle of these beads slots are still available for centering the arcs.
  • EP-A-0 124 620 is a switch with a device for Deletion of arcs occurring on the contact pieces is known.
  • This device consists of a recess in one of the Contact carrier, the material of the recess in the direction of opposite contact carrier is bent up. The hereby The effect achieved is that the current flow to the contact at the the recess provided contact carrier in the area of the contact is deflected, consequently the forces acting on the arc so unbalanced that the arc is in the direction of Recess or to the deflector located on the recess is moved.
  • the object of the invention is to overcome the disadvantages of known systems avoid and create an electrical contact arrangement which is suitable for switching off high currents and one Arc extinguishing mechanism, which is easy in the Structure is required, few parts and a compact arrangement with a small footprint.
  • This arc extinguishing mechanism also no additional facility for Arc motion, such as a magnet, is required.
  • this goal is achieved with a contact arrangement achieved in that the baffles each obliquely from the side edges of the ones carrying them Contact carrier arrangement in the direction of the opposite Extend contact carrier assembly.
  • the two contact arms are preferably elongated Sheet metal strips arranged in a common plane while the bridge contact carrier as a leaf spring strip approximately in a parallel plane is arranged. You can either the two contact arms provided with connections form a fixed contact carrier arrangement, while the bridge contact carrier serves as a movable contact arrangement, or a reverse function is also possible.
  • the two baffles are preferably in one piece either at each other facing outer edges of the two contact arms or molded onto the outer edges of the bridge contact carrier; she are each at least a portion of the bridge contact carrier or a contact arm opposite, in the vicinity the actual switch contacts to the function of the Arc discharge can also meet.
  • the contact arrangement shown in Figures 1 to 3 comprises a pair of fixed contact arms 1 and 2, which are parallel to each other in a common Level are arranged and fastened in a suitable manner could be.
  • the contact arms 1 and 2 each have connection ends 1a and 2a, which in an insulating contact carrier or a relay housing (for example according to FIG 6) are anchored.
  • the contact arms 1 and 2 each have free ones End sections 1b and 2b, on each of which a fixed Contact 3 or 4 is attached.
  • the fixed contact arms 1 and 2 can be made of sheet material with high conductivity, such as such as copper or a copper alloy.
  • the connection ends 1a and 2a are provided with connecting lugs 5 and 6, for example as shown in FIGS. 4 or 6, by means of which the contact arms 1 and 2 to one Circuit connected to a power source (not shown) can be.
  • the contact arrangement comprises a movable contact arm 7, which is basically T-shaped with a longitudinal or Main leg 7a and a transverse leg or front end 7b is designed.
  • An elongated bridge contact 8 is on the Fixed front end 7b.
  • the movable contact arm 7 is in one parallel to the level of the fixed contact arms 1 and 2 Level arranged so that the bridge contact 8 in one the two fixed contacts 3 and 4 opposite Position is held.
  • the movable contact arm 7 can resilient sheet material, preferably stainless steel or the like, consist. Because the movable contact arm has no connection the end of the main leg 7a in the insulating Contact carrier or relay housing (see for example Figure 6) be attached.
  • the movable contact arm 7 can be operated by a slide, or it can also be operated directly be connected to a relay anchor.
  • the main thigh 7a can be divided into two legs by a recess 9 be, as shown in Figure 1, or it can be one have single leg according to Figure 4 or 6.
  • Two arc discharge plates 11 and 12 are on the two Provided sides of the movable contact arm 7, they extend from the cross leg 7b along the main leg 7a and at an acute angle towards the opposite fixed contact arms 1 and 2 bent are.
  • the arrangement and dimensions of the fixed Contact arms 1 and 2 and the movable contact arm 7 are chosen so that the baffles 11 and 12 of the surface of the opposite fixed contact arms 1 and 2, respectively face or at least overlap. following the function of the contact arrangements according to FIGS. 1 to 3, 4 and 6 are described.
  • the contacts are in the open state shown.
  • a current i from the fixed contact arm 2 through the fixed contact 4, then over the bridge contact 8 second fixed contact 3 to the fixed contact arm 1.
  • This current i generates in the contact arm 2 and the fixed Contact 4 a magnetic field M1 with a first Field direction while the same current i in the fixed Contact arm 1 flows in the opposite direction and so in this Contact arm 1 and the fixed contact 3 a magnetic field M2 generated with a field direction that of the magnetic field M1 is opposite.
  • opposite magnetic fields M1 and M2 a magnetic repulsive force between the fixed contacts 3 and 4, the is indicated in the drawing with the double arrow 13.
  • Figure 5 shows a modification of the contact arrangement of Figure 4.
  • This figure shows a pair of fixed contact arms 21 and 22 with their respective connection ends 21a and 22a and the associated front ends 21b and 22b, the latter with fixed contacts 23 and 24 are provided.
  • Similar to the contact arrangement of Figure 4 is a movable one in this case Contact arm 27 provided a widened front end 27b and has a bridge contact 28 fastened thereon.
  • the baffles 25 and 26 are towards the widened front end 27b of the movable contact arm 27 bent so that it can move at least a portion of this Facing contact arms.
  • the function of the modified Contact arrangement is the same as described above.
  • FIG. 6 shows a relay without a housing cap, which another Modification of the contact arrangement of Figure 4 contains.
  • the Relay comprises an excitation coil 51 (on the unwound coil carrier shown) on a bobbin 52, the inside contains a continuous magnetic core 53.
  • the relay includes further an anchor 54 which is supported at one end on a yoke and is coupled at the other end to a slide 56 is.
  • the slider suspended on a return spring 55 56 couples the armature 54 to the movable contact arm 7 Contact arrangement.
  • the contact arrangement Connection ends 1a and 2a of the fixed contact arms 1 and 2 in such a configuration, that they facilitate assembly of the relay.
  • Figure 6 shows in this case connection ends 1a and 2a, the side protrude from the fixed contact arms 1 and 2, respectively.
  • the function of this modified contact arrangement is that same as described above. It should be noted that each modified the contact arrangements described in a similar manner can be.
  • baffles like already mentioned, either on the movable or the fixed Contact arms are provided. It is essential in any case that regardless of the special design of the contact arms and the actuating mechanism two opposite to each other Current paths are provided on the contacts, which mutually repelling magnetic fields for arising when switching off Generate arcs.
  • the baffles can of course with any shape and from any material are shaped to deflect an arc from the Contacts on the diverters and then deleting the Arc.
  • the baffles are preferably made made of stainless steel and extend obliquely from the concerned Contact arm gone.

Claims (9)

  1. Assemblage de contacts électriques pour un dispositif de commutation comportant un assemblage de support de contacts fixe (1, 2; 21, 22) et un assemblage de support de contacts mobile (7; 27), supportant respectivement des contacts opposés (3, 4, 8; 23, 24, 28), l'assemblage de support de contacts mobile (7; 27) pouvant être déplacé par un dispositif d'actionnement (56) en direction de l'assemblage de support de contacts fixe (1, 2; 21, 22), pour accoupler les contacts, et comportant au moins un dispositif de déviation de l'arc électrique (11, 12; 25, 26), débordant de l'un des assemblages de support de contacts en direction de l'autre assemblage de support de contacts, un des deux assemblages de support de contacts étant constitué par deux bras de contact (1, 2; 21, 22) comportant respectivement un raccordement (5, 6) et dont les contacts (3, 4; 23, 24) sont juxtaposés dans un plan, l'autre assemblage de support de contacts (7; 27) comportant un support de contact à pont avec un contact à pont (8; 28), assurant le pontage dans la position de fermeture des deux contacts ci-dessus (3, 4; 23, 24), deux tôles de déviation (11, 12; 25, 26) étant agencées sur les côtés externes des bras de contact (1, 2; 21, 22) ou du support du contact à pont (7; 27), à proximité des deux côtés des contacts (3, 4; 23, 24), caractérisé en ce que les tôles de déviation (11, 12; 25, 26) s'étendent respectivement de manière oblique à partir des bords latéraux de l'assemblage de support de contacts qui supporte ces mêmes tôles en direction de l'assemblage de support de contacts opposé.
  2. Assemblage de contacts selon la revendication 1, caractérisé en ce que les deux bras de contact (1, 2; 21, 22) sont agencés sous forme de bandes de tôles allongées dans un plan commun, le support du contact à pont (7; 27) étant agencé sous forme d'une bande de tôle dans un plan pratiquement parallèle à celui-ci.
  3. Assemblage de contacts selon les revendications 1 ou 2, caractérisé en ce que les deux bras de contact (1, 2; 21, 22) constituent l'assemblage de support de contacts fixe, le support du contact à pont (7; 27) constituant l'assemblage de support de contacts mobile.
  4. Assemblage de contacts selon les revendications 1 ou 2, caractérisé en ce que le support du contact à pont constitue l'assemblage de support de contacts fixe, les deux bras de contact constituant l'assemblage de support de contact mobile.
  5. Assemblage de contacts selon l'une des revendications 1 à 4, caractérisé en ce que les tôles de déviation (11, 12) sont fixées d'une seule pièce sur le support du contact à pont (7).
  6. Assemblage de contacts selon l'une des revendications 1 à 4, caractérisé en ce que les tôles de déviation (11, 12) sont respectivement fixées d'une seule pièce sur les bras de contact (21, 22).
  7. Assemblage de contacts selon l'une des revendications 1 à 6 caractérisé en ce que le support du contact à pont (7; 27) a en général une forme en T, avec une branche longitudinale (7a) et une branche transversale (7b), le contact à pont étant agencé sur la branche transversale correspondante (7b), dans le sens longitudinal de celle-ci, les tôles de déviation (11, 12) s'étendant à partir des deux extrémités de la branche transversale (7b), de manière pratiquement parallèle à la branche longitudinale (7a).
  8. Assemblage de contacts selon l'une des revendications 1 à 7, caractérisé en ce que le support du contact à pont (7; 27) est composé de tôle à ressorts, les deux bras de contact (1, 2; 21, 22) étant composés d'un matériau à haute conductivité.
  9. Assemblage de contacts selon la revendication 8, caractérisé en ce que le support du contact à pont (7; 27) est composé d'acier fin à ressorts.
EP96104820A 1995-03-30 1996-03-26 Assemblage de contacts électriques Expired - Lifetime EP0736887B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US41329595A 1995-03-30 1995-03-30
US413295 1995-03-30

Publications (3)

Publication Number Publication Date
EP0736887A2 EP0736887A2 (fr) 1996-10-09
EP0736887A3 EP0736887A3 (fr) 1998-04-22
EP0736887B1 true EP0736887B1 (fr) 2002-05-29

Family

ID=23636688

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96104820A Expired - Lifetime EP0736887B1 (fr) 1995-03-30 1996-03-26 Assemblage de contacts électriques

Country Status (4)

Country Link
US (1) US5686712A (fr)
EP (1) EP0736887B1 (fr)
AT (1) ATE218244T1 (fr)
DE (1) DE59609248D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011114996A1 (de) 2011-10-06 2012-06-06 Daimler Ag Elektrodenanordnung für einen Schütz
JP5923932B2 (ja) * 2011-11-04 2016-05-25 オムロン株式会社 接点開閉機構及び電磁継電器
US8947181B2 (en) 2012-11-15 2015-02-03 Eaton Corporation Arc runner assembly and circuit interrupter

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733312A (en) * 1956-01-31 christensen
US1862631A (en) * 1928-07-16 1932-06-14 Penn Electric Switch Co Switch structure
US2571951A (en) * 1949-09-09 1951-10-16 Westinghouse Electric Corp Electrical apparatus
CA671520A (en) * 1959-08-07 1963-10-01 C. Wells Bruce Electrical interlock
FR1541532A (fr) * 1966-10-22 1968-10-04 Siemens Ag Dispositif d'extinction de l'arc électrique pour appareils de commutation à courant continu
US4028513A (en) * 1975-05-08 1977-06-07 I-T-E Imperial Corporation Steel arcing contact for circuit breaker
US4006439A (en) * 1975-09-11 1977-02-01 Westinghouse Electric Corporation Circuit interrupter having an insulated bridging contact
KR880001427Y1 (ko) * 1981-08-13 1988-04-15 미쓰비시전기 주식회사 전자(電磁)개폐장치
ATE21298T1 (de) * 1981-11-21 1986-08-15 Sprecher & Schuh Ag Kontaktstueck fuer ein elektrisches schaltgeraet, insbesondere fuer ein schuetz.
EP0079978A1 (fr) * 1981-11-21 1983-06-01 Sprecher & Schuh AG Pièce de contact pour interrupteur électrique, en particulier pour interrupteur de protection
EP0124620B1 (fr) * 1982-11-10 1993-06-16 Mitsubishi Denki Kabushiki Kaisha Commutateur
US4568805A (en) * 1984-08-24 1986-02-04 Eaton Corporation J-Plate arc interruption chamber for electric switching devices
US4810841A (en) * 1986-07-31 1989-03-07 Siemens Aktiengesellschaft Current-limiting switching element
JP2658170B2 (ja) * 1988-05-11 1997-09-30 オムロン株式会社 開閉器
FR2714520B1 (fr) * 1993-12-24 1996-01-19 Telemecanique Appareil électrique interrupteur à contacts séparables.

Also Published As

Publication number Publication date
EP0736887A3 (fr) 1998-04-22
ATE218244T1 (de) 2002-06-15
DE59609248D1 (de) 2002-07-04
US5686712A (en) 1997-11-11
EP0736887A2 (fr) 1996-10-09

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