EP0736887A2 - Assemblage de contacts électriques - Google Patents

Assemblage de contacts électriques Download PDF

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Publication number
EP0736887A2
EP0736887A2 EP96104820A EP96104820A EP0736887A2 EP 0736887 A2 EP0736887 A2 EP 0736887A2 EP 96104820 A EP96104820 A EP 96104820A EP 96104820 A EP96104820 A EP 96104820A EP 0736887 A2 EP0736887 A2 EP 0736887A2
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.)
Granted
Application number
EP96104820A
Other languages
German (de)
English (en)
Other versions
EP0736887B1 (fr
EP0736887A3 (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
Siemens Electromechanical Components GmbH and Co KG
Siemens Electromechanical Components Inc
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 Electromechanical Components GmbH and Co KG, Siemens Electromechanical Components Inc filed Critical Siemens Electromechanical Components GmbH and Co KG
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 arrangement, each of which carries opposing contacts, the movable contact carrier arrangement being movable by an actuating device in the direction of the fixed contact carrier arrangement in order to interconnect the contacts, and with at least one Arc discharge device which projects from one of the contact arrangements in the direction of the other contact arrangement.
  • the invention is used in switching devices, in particular in electromagnetic relays or the like for switching alternating or direct currents.
  • the aim of the invention is to avoid the disadvantages of known systems and to provide an electrical contact arrangement which is suitable for switching off high currents and at the same time offers an arc quenching mechanism which is simple in construction, requires little parts and has a compact arrangement with a small space requirement enables.
  • This arc extinguishing mechanism should also not require any additional device for moving the arc, such as a magnet.
  • this object is achieved with a contact arrangement of the type mentioned in the introduction in that one of the two contact carrier arrangements is formed from two contact arms, each of which is provided with a connection and the contacts of which lie next to one another in one plane, in that the other contact carrier arrangement has a bridge contact carrier with a bridge contact has, which bridges the two aforementioned contacts in the closed position, and that two baffles are provided on the outer sides of the contact arms or the bridge support approximately on both sides of the contacts.
  • the two contact arms are preferably arranged as an elongated sheet metal strip in a common plane, while the bridge contact carrier is arranged approximately as a leaf spring strip in a plane parallel to it. Either the two contact arms provided with connections can form the fixed contact carrier arrangement, while the bridge contact carrier serves as a movable contact arrangement, or a reverse function is also possible.
  • the two deflector plates are preferably formed in one piece either on the outer edges of the two contact arms facing away from one another or on the outer edges of the bridge contact carrier; they each face at least a section of the bridge contact carrier or a contact arm, in the vicinity of the actual switch contacts, in order to also be able to perform the function of the arc discharge.
  • the contact arrangement according to the invention shown in FIGS. 1 to 3 comprises a pair of fixed contact arms 1 and 2, which are arranged parallel to one another in a common plane and can be fastened in a suitable manner.
  • the contact arms 1 and 2 each have connection ends 1a and 2a, which are anchored in an insulating contact carrier or a relay housing (for example according to FIG. 6).
  • the contact arms 1 and 2 each have free end sections 1b and 2b, on each of which a fixed contact 3 and 4 is attached.
  • the fixed contact arms 1 and 2 can consist of sheet material with high conductivity, such as copper or a copper alloy.
  • the connection ends 1a and 2a are provided with connection lugs 5 and 6, for example as shown in FIGS. 4 or 6, by means of which the contact arms 1 and 2 can be connected to a circuit with a current source (not shown).
  • 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.
  • An elongated bridge contact 8 is fixed on the front end 7b.
  • the movable contact arm 7 is arranged in a plane parallel to the level of the fixed contact arms 1 and 2, 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 consist of resilient sheet material, preferably stainless steel or the like. Since the movable contact arm does not require a connection, the end of the main leg 7a can be fastened in the insulating contact carrier or relay housing (see, for example, FIG. 6).
  • the movable contact arm 7 can be actuated by a slide, or it can also be connected directly to a relay armature.
  • the main leg 7a can be divided into two legs by a recess 9, as shown in FIG. 1, or it can also have a single leg according to FIG. 4 or 6.
  • Two arc diverter plates 11 and 12 are provided on both sides of the movable contact arm 7, extending from the cross leg 7b along the main leg 7a and bent at an acute angle towards the opposed fixed contact arms 1 and 2.
  • the arrangement and the dimensions of the fixed contact arms 1 and 2 and of the movable contact arm 7 are selected so that the deflector plates 11 and 12 face or at least overlap the surface of the respectively opposite fixed contact arm 1 or 2.
  • the contacts are shown in the open state.
  • a current i flows from the fixed contact arm 2 through the fixed contact 4, then via the bridge contact 8, the second fixed contact 3 to the fixed contact arm 1.
  • This current i generates a magnetic field M1 in the contact arm 2 and the fixed contact 4 with a first field direction, while the same current i flows in the fixed contact arm 1 in the opposite direction and thus in this contact arm 1 and the fixed contact 3 a magnetic field M2 generated with a field direction that is opposite to that of the magnetic field M1.
  • the opposite magnetic fields M1 and M2 cause a magnetic repulsive force between the fixed contacts 3 and 4, which is indicated in the drawing by the double arrow 13.
  • the magnetic fields M1 and M2 continue to act, and the resulting repulsive force 13 moves the two arcs 14 and 15 away from one another in the direction of the arc deflection plates 11 and 12.
  • the arc baffles 11 and 12 provide additional material and surface area for the arcs where they continue to burn until conditions are such that they can no longer exist.
  • no additional magnetic means are required to deflect an arc in the direction of the associated deflecting plate and to extinguish the arc.
  • FIG. 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 being provided with fixed contacts 23 and 24.
  • two arc discharge plates 25 and 26 are provided, which extend from the front ends 21b and 22b of the fixed ones Extend contact arms 21 and 22 away.
  • a movable contact arm 27 is provided in this case, which has a widened front end 27b and a bridge contact 28 fastened thereon.
  • the baffles 25 and 26 are bent toward the widened front end 27b of the movable contact arm 27 so that they face at least a portion of this movable contact arm.
  • the function of the modified contact arrangement is the same as described above.
  • FIG. 6 shows a relay without a housing cap, which contains a further modification of the contact arrangement from FIG. 4.
  • the relay comprises an excitation coil 51 (shown on the unwound coil carrier) on a coil body 52, which contains a continuous magnetic core 53 inside.
  • the relay further comprises an armature 54 which is mounted on a yoke at one end and is coupled to a slide 56 at the other end.
  • the slider 56 suspended on a return spring 55 couples the armature 54 to the movable contact arm 7 of the contact arrangement.
  • the contact assembly may have terminal ends 1a and 2a of the fixed contact arms 1 and 2 in a configuration such that they facilitate the assembly of the relay.
  • FIG. 6 shows connection ends 1a and 2a, which project laterally from the fixed contact arms 1 and 2, respectively.
  • the function of this modified contact arrangement is the same as described above. It should also be noted that each of the contact arrangements described can be modified in a similar manner.
  • the contact arms provided with individual contacts can be movable, while the opposite contact arm can be designed to be stationary with the bridge contact.
  • the deflector plates can also be provided either on the movable or the fixed contact arms. It is essential in any case that irrespective of the special design of the contact arms and the actuating mechanism, two opposing current paths are provided on the contacts, which generate mutually repelling magnetic fields for arcing when switching off.
  • the baffles can of course be formed in any shape and material to cause an arc to deflect from the contacts onto the baffles and then extinguish the arc.
  • the deflection plates are preferably made of stainless steel and extend obliquely away from the contact arm in question.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Contacts (AREA)
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 true EP0736887A2 (fr) 1996-10-09
EP0736887A3 EP0736887A3 (fr) 1998-04-22
EP0736887B1 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)

Cited By (2)

* 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
CN103094007A (zh) * 2011-11-04 2013-05-08 欧姆龙株式会社 接点开关机构和电磁继电器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8947181B2 (en) 2012-11-15 2015-02-03 Eaton Corporation Arc runner assembly and circuit interrupter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0079978A1 (fr) * 1981-11-21 1983-06-01 Sprecher & Schuh AG Pièce de contact pour interrupteur électrique, en particulier pour interrupteur de protection
EP0079977A1 (fr) * 1981-11-21 1983-06-01 Sprecher & Schuh AG Pièce de contact pour interrupteur électrique, en particulier pour interrupteur de protection
EP0124620A1 (fr) * 1982-11-10 1984-11-14 Mitsubishi Denki Kabushiki Kaisha Commutateur
EP0341690A2 (fr) * 1988-05-11 1989-11-15 Omron Tateisi Electronics Co. Interrupteur à contacts

Family Cites Families (11)

* 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
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
FR2714520B1 (fr) * 1993-12-24 1996-01-19 Telemecanique Appareil électrique interrupteur à contacts séparables.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0079978A1 (fr) * 1981-11-21 1983-06-01 Sprecher & Schuh AG Pièce de contact pour interrupteur électrique, en particulier pour interrupteur de protection
EP0079977A1 (fr) * 1981-11-21 1983-06-01 Sprecher & Schuh AG Pièce de contact pour interrupteur électrique, en particulier pour interrupteur de protection
EP0124620A1 (fr) * 1982-11-10 1984-11-14 Mitsubishi Denki Kabushiki Kaisha Commutateur
EP0341690A2 (fr) * 1988-05-11 1989-11-15 Omron Tateisi Electronics Co. Interrupteur à contacts

Cited By (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
CN103094007A (zh) * 2011-11-04 2013-05-08 欧姆龙株式会社 接点开关机构和电磁继电器
CN103094007B (zh) * 2011-11-04 2015-06-17 欧姆龙株式会社 接点开关机构和电磁继电器

Also Published As

Publication number Publication date
ATE218244T1 (de) 2002-06-15
DE59609248D1 (de) 2002-07-04
EP0736887B1 (fr) 2002-05-29
EP0736887A3 (fr) 1998-04-22
US5686712A (en) 1997-11-11

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