EP2645386A1 - Relais doté de propriétés d'isolation améliorées - Google Patents

Relais doté de propriétés d'isolation améliorées Download PDF

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Publication number
EP2645386A1
EP2645386A1 EP13161363.0A EP13161363A EP2645386A1 EP 2645386 A1 EP2645386 A1 EP 2645386A1 EP 13161363 A EP13161363 A EP 13161363A EP 2645386 A1 EP2645386 A1 EP 2645386A1
Authority
EP
European Patent Office
Prior art keywords
switch
contact
relay
contact spring
armature
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
EP13161363.0A
Other languages
German (de)
English (en)
Other versions
EP2645386B1 (fr
Inventor
Ralf Hoffmann
Jens Heinrich
Christian Müller
Olaf Abel
Thomas Kühne
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.)
Phoenix Contact GmbH and Co KG
Original Assignee
Phoenix Contact GmbH and Co KG
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Publication date
Application filed by Phoenix Contact GmbH and Co KG filed Critical Phoenix Contact GmbH and Co KG
Publication of EP2645386A1 publication Critical patent/EP2645386A1/fr
Application granted granted Critical
Publication of EP2645386B1 publication Critical patent/EP2645386B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2272—Polarised relays comprising rockable armature, rocking movement around central axis parallel to the main plane of the armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force

Definitions

  • the invention relates to an electromagnetic relay with a solenoid system, an armature, a first and a second switch on opposite sides of the relay.
  • Relays of this type are known ( US 4,703,293 . US 6,107,903 ) and comprise a solenoid system having at least one coil, a coil core, and two pole pieces defining two opposing relay sides.
  • the relay housing has fixed contacts of the switches on the opposite relay sides.
  • the movable contacts of the switches sit at the end of contact springs and are supported by an isolation platform, which is part of a movable block to which the anchor belongs.
  • Each of the contact springs leads to a center terminal, which are each electrically connected to pins.
  • the isolation distance between the respective contact spring and armature or pole piece is not very long, so that the known relays are only suitable for low voltages of eg below 60 volts.
  • the invention has for its object to provide an electromagnetic relay, which is not only suitable for low voltages with the smallest possible space and high sensitivity. With appropriate design increased insulation should be achieved. Furthermore, the closing force of the relay should be increased electrodynamically.
  • the electromagnetic relay includes a solenoid system having at least one coil, a coil core, and two pole pieces defining first and second opposing relay sides.
  • the solenoid system is associated with an armature having an insulating anchor block as a carrier of a contact spring.
  • This contact spring belongs to a first switch, which is arranged on the first relay side and acts as a load switch and normally-open contact switch.
  • the contact spring is shaped according to a return loop to form in the opposite direction current-carrying conductor sections which are connected on the one hand to a load pin and on the other hand to a movable contact which cooperates with a fixed contact, which is connected to a further load pin.
  • the Contacts of the first switch are arranged in an insulating chamber which is surrounded by insulating walls of a carrier component, a housing cap and the insulating anchor block.
  • a second switch On the second relay side, a second switch is still provided, which has a second contact spring with a movable contact to make or break the electrical connection between two diagnostic pins.
  • the second switch is a normally closed contact switch and useful as a diagnostic switch for detecting the switch position of the armature.
  • the design of the diagnostic switch may be similar to that of the circuit breaker, but it is also possible to use other switch designs.
  • the second contact spring with movable contact may be formed as an armature attached to the contact bridge, which cooperates with fixed contacts, which are connected to the pins of the diagnostic switch.
  • the support member may include an insulating hood that separates the moving space of the armature from the insulating chamber of the first switch.
  • electrical currents must travel long creepage distances and creepage distances of more than half the relay length until they reach metallic parts. As a result, such leakage currents are prevented.
  • the first contact spring has a contact spring leg, a return spring leg and a leg, which form a current loop with sections through which flows in the opposite direction, resulting in electrodynamic forces develop in the closing direction of the first switch.
  • the contact pressure of the contacts is increased to each other, so that a good power transition with protection of the contacts is made possible.
  • the short circuit is, as usual, terminated by a contactor, which is arranged in the course of the short circuit line.
  • the relay according to the invention can be designed as polarized relay.
  • a permanent magnet which is arranged between the pole shoes of the electromagnetic system. It is expedient to combine a coil assembly of a wound on a support body coil, a core and pole pieces and to form a pole assembly with pole pieces and the permanent magnet. This facilitates the installation of the relay.
  • the electromagnetic relay is composed of a magnetic system and a switch system, which are held together and protected by housing parts.
  • the magnet system comprises an electromagnet with coil 1, ferromagnetic core 2, ferromagnetic pole shoes 3, 4 and pole pieces 7, 8.
  • the coil 1 is wound on a support body 5 and forms together with the ferromagnetic core 2 and the ferromagnetic pole pieces 3 and 4, a coil assembly 10.
  • the magnet system also includes the pole pieces 7, 8 as magnetic flux parts, a permanent magnet 11 and an armature 12.
  • the permanent magnet 11 may be designed as a three-pole magnet with a middle part as a ferromagnetic bearing piece, but it is also possible to use a short two-pole magnet.
  • Permanent magnet to be used which is joined between a ferromagnetic bearing piece (not shown) for the armature 12 and one of the poles 7 or 8, wherein between the bearing piece and the other pole 8 or 7 is a magnetic flux interruption.
  • a pole assembly of the pole pieces, the permanent magnet and the bearing piece can be formed.
  • the relay includes a first switch or load switch 20 and a second switch or diagnostic switch 30 disposed on opposite sides of the relay.
  • the switch 20 has a fixed contact 21 and a movable contact 23 which is fixedly connected to a contact spring 24 having a contact spring leg 24a, a return spring leg 24b and a fixed leg 24c.
  • the legs 24a and 24b are connected to each other via a 180 ° bend and thus form a return current loop with in the opposite direction Sections.
  • the leg 24a of the contact spring 24 has a lateral tab 24d (FIG. Fig.
  • the 90 ° transition between the legs 24b and 24c is recessed to have a test access to the movable contact 23.
  • the leg 24c has a downwardly extending extension, with which it is connected to a first load pin 43.
  • the fixed contact 21 is connected to a fixed contact carrier 25 which is fixed in the carrier body 5, for example by encapsulation in plastic.
  • the fixed contact carrier 25 is in turn in a conductive connection with a second load terminal pin 44.
  • the second switch 30 is similar to the first switch and has a fixed contact 31 and a movable contact 33 which is attached to a contact spring 34, which is preferably secured to the anchor 12 insulating.
  • the movable contact 33 includes two contact bodies which are attached to associated spring tabs of the contact spring 34.
  • the contact spring 34 has three legs, a spring contact leg 34a, a return spring leg 34b and a fixed leg 34c, which form a current loop with sections through which flows in the opposite direction.
  • the festive 34c is with a first diagnostic pin 45 connected.
  • the fixed contact 31 is seated on a fixed contact carrier 35, which is anchored in the carrier body 5 and is in electrically conductive communication with a second diagnostic connection pin 46.
  • the second switch 30 is formed with two fixed contacts and a movable, acting as a bridge contact (not shown).
  • the fixed contacts can be designed to be resilient.
  • the second switch 30 is used as a diagnostic switch for detecting the switch position of the armature.
  • the contact spring 24 is connected via the lateral tab 24d to the insulating block 13 and thus to the armature 12 in order to follow its movements.
  • the insulating block 13 has a recess 14 to the side of the switch 20 to form a space for an insulating hood 15, which is fastened to the insulating support body 5.
  • the armature 12 and with it the insulating block 13 moves to close the switch 20 or 30, then the legs of the armature 12 and the insulating block 13 adjacent to the hood 15 do not hit the insulating hood 15. It thus remains Distance along the surface of the insulating hood 15 free, which is sufficiently long to To prevent leakage currents from the switch 20 to the solenoid system.
  • the insulating carrier body 5 has two legs, in which the respective fixed contact carriers 25 and 35 of the switches 20 and 30 are fixed, and a connecting piece between the legs of the carrier body, which forms a bobbin for receiving the coil 1.
  • the coil 1, the core 2 and the pole pieces 3 and 4 together form a coil assembly 10 which is held together by the carrier body 5.
  • the pole pieces 7, 8 together with the permanent magnet 11, a pole assembly which is disposed between the pole pieces 3, 4 above the coil 1.
  • the central region of the permanent magnet, or an extra bearing, form the support bearing for the armature 12.
  • the support body 5 together with the coil assembly 10 and the pole assembly is inserted with the interposition of coil connection leads in a housing space of a base housing 40, after the ends of the coil connecting leads with the Coil terminal pins 41, 42 have been connected. All pins 41 to 46 protrude from the underside of the base housing 40.
  • a housing cap 50 is placed on the mounted relay so that a chamber is created around the switch 20, whose walls are made of insulating material. These insulating walls consist of parts of the carrier body 5, the hood 15, the insulating block 13 and parts of the inner wall of the housing cap 50.
  • the relay is in Fig. 2 and 3 in a middle position of the armature 12 has been shown.
  • the sense of the design of the contact spring 24 with the 180 ° bend is to form a return current loop with traversed in the opposite direction sections, so that when energized relay and closed load switch 20 additionally develop electrodynamic forces in the closing direction of the load switch 20. These forces in the closing direction are especially large when a short-circuit current occurs via the load switch 20, so that good contact pressure of the switch contacts 21, 23 is achieved. This prevents the opening of the contacts 21, 23 in the event of a short circuit and thus the destruction of the contacts 21, 23 due to opening sparks.
  • the short circuit is, as usual, interrupted by a contactor.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Electromagnets (AREA)
EP13161363.0A 2012-03-30 2013-03-27 Relais doté de propriétés d'isolation améliorées Active EP2645386B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201210006433 DE102012006433B4 (de) 2012-03-30 2012-03-30 Relais mit verbesserten Isolationseigenschaften

Publications (2)

Publication Number Publication Date
EP2645386A1 true EP2645386A1 (fr) 2013-10-02
EP2645386B1 EP2645386B1 (fr) 2017-02-01

Family

ID=48044627

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13161363.0A Active EP2645386B1 (fr) 2012-03-30 2013-03-27 Relais doté de propriétés d'isolation améliorées

Country Status (3)

Country Link
EP (1) EP2645386B1 (fr)
DE (1) DE102012006433B4 (fr)
ES (1) ES2617046T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113841214A (zh) * 2019-07-02 2021-12-24 广东德昌电机有限公司 开关系统的开关触点系统
CN114496607A (zh) * 2020-11-12 2022-05-13 比亚迪股份有限公司 一种配电模块
CN114975010A (zh) * 2022-05-19 2022-08-30 扬州润沃科技有限公司 一种大功率过流保护用多路继电器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018109864B4 (de) 2018-04-24 2021-09-02 Phoenix Contact Gmbh & Co. Kg Relais

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4703293A (en) 1985-03-25 1987-10-27 Matsushita Electric Works, Ltd. Polarized electromagnetic actuator device
DE4216080A1 (de) 1992-05-15 1993-11-18 Siemens Ag Kontaktfedersatz zum Schalten hoher elektrischer Ströme
WO1993023863A1 (fr) 1992-05-15 1993-11-25 Siemens Aktiengesellschaft Agencement de lames de contact de relais de transmission et de commutation de courants eleves
WO1993023866A1 (fr) 1992-05-15 1993-11-25 Siemens Aktiengesellschaft Relais de puissance polarise
US6107903A (en) 1997-03-07 2000-08-22 Omron Corporation Electromagnetic relay
DE10084279T1 (de) * 1999-12-24 2002-04-11 Takamisawa Electric Co Wechselrelais

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19825078C1 (de) * 1998-06-04 2000-03-09 Siemens Ag Polarisiertes elektromagnetisches Relais

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4703293A (en) 1985-03-25 1987-10-27 Matsushita Electric Works, Ltd. Polarized electromagnetic actuator device
DE4216080A1 (de) 1992-05-15 1993-11-18 Siemens Ag Kontaktfedersatz zum Schalten hoher elektrischer Ströme
WO1993023863A1 (fr) 1992-05-15 1993-11-25 Siemens Aktiengesellschaft Agencement de lames de contact de relais de transmission et de commutation de courants eleves
WO1993023866A1 (fr) 1992-05-15 1993-11-25 Siemens Aktiengesellschaft Relais de puissance polarise
US6107903A (en) 1997-03-07 2000-08-22 Omron Corporation Electromagnetic relay
DE10084279T1 (de) * 1999-12-24 2002-04-11 Takamisawa Electric Co Wechselrelais

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113841214A (zh) * 2019-07-02 2021-12-24 广东德昌电机有限公司 开关系统的开关触点系统
CN113841214B (zh) * 2019-07-02 2023-12-12 广东德昌电机有限公司 开关系统的开关触点系统
CN114496607A (zh) * 2020-11-12 2022-05-13 比亚迪股份有限公司 一种配电模块
CN114496607B (zh) * 2020-11-12 2023-09-05 比亚迪股份有限公司 一种配电模块
CN114975010A (zh) * 2022-05-19 2022-08-30 扬州润沃科技有限公司 一种大功率过流保护用多路继电器

Also Published As

Publication number Publication date
ES2617046T3 (es) 2017-06-15
EP2645386B1 (fr) 2017-02-01
DE102012006433B4 (de) 2014-01-02
DE102012006433A1 (de) 2013-10-02

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