EP1308976A1 - Relais - Google Patents

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Publication number
EP1308976A1
EP1308976A1 EP02405874A EP02405874A EP1308976A1 EP 1308976 A1 EP1308976 A1 EP 1308976A1 EP 02405874 A EP02405874 A EP 02405874A EP 02405874 A EP02405874 A EP 02405874A EP 1308976 A1 EP1308976 A1 EP 1308976A1
Authority
EP
European Patent Office
Prior art keywords
slide
contact
monitoring device
relay
contacts
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.)
Withdrawn
Application number
EP02405874A
Other languages
German (de)
English (en)
French (fr)
Inventor
Robert 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.)
Elesta Relays GmbH
Original Assignee
Elesta Relays GmbH
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 Elesta Relays GmbH filed Critical Elesta Relays GmbH
Publication of EP1308976A1 publication Critical patent/EP1308976A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/001—Means for preventing or breaking contact-welding
    • 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
    • H01H50/641—Driving arrangements between movable part of magnetic circuit and contact intermediate part performing a rectilinear movement
    • H01H50/642—Driving arrangements between movable part of magnetic circuit and contact intermediate part performing a rectilinear movement intermediate part being generally a slide plate, e.g. a card

Definitions

  • the invention relates to a relay with a number of load contacts each a movable contact spring, a slide that is connected to the movable Contact springs of the load contacts is engaged and a driving the slide Drive for switching the load contacts with the slide, and one non-contact monitoring device in the housing of the relay for Monitor the switching of the load contacts.
  • a contactor which has a base plate thereon Housing and in the housing has an actuating structure.
  • This Actuating structure has a U-shaped yoke with one on each leg of the U. Coil winding of a coil.
  • the U-shaped yoke works with a U-shaped anchor together.
  • the contactor has a number of stationary contact pairs, and to each stationary contact pair on a movable contact bridge.
  • the contact bridges are arranged on a movable contact carrier.
  • the stationary contacts are arranged on the housing of the contactor.
  • the contact carrier and the contact bridges are moved together with the anchor relative to the housing when the Coil is activated or deactivated.
  • the Contacts closed by the electromagnet.
  • the contacts are opened by the spring force of two spiral springs.
  • Such a Schütz only has a number of NO contacts as load contacts, but none NC contact as control contact.
  • An additional contact device for such a contactor is known from US-A-4,309,683.
  • This additional contact device has a second housing that is connected to the first housing of the Contactors can be attached.
  • This second case there is a fixed and a movable contact arranged on a second contact carrier.
  • the first Contact carrier of the contactor and the second contact carrier of the additional contact device are mechanically coupled, so that the second contact carrier prevents the movements of the must be involved in the first contact carrier.
  • the contact of the Additional contact device closed or opened.
  • For the connection of the two Contact carriers are provided in the first contact carrier slots, while on there are second contact carrier projections which engage in these slots. This connection of the contact carrier of the additional contact device with the Contact carrier of the contactor allows the spring means in the additional contact device dispense.
  • US-A-5,198,789 proposes a logical contactor according to US-A-3,821,771
  • Safety switch in front of the type of additional contact device according to US-A-4,309,683 can be attached to a contactor.
  • This safety switch has a plunger protruding from a housing of the safety switch, the taps the movement of the armature and therefore between the open position and the closed position of the contacts is moved back and forth.
  • logical sensors are arranged around the plunger and an activator is arranged on the plunger. The Depending on the position of the armature, the activator selectively activates the logic sensors, which sensors therefore have a logic corresponding to the position of the contact bridges Generate signal.
  • the tappet has its own Spring means that press the plunger against the anchor, making the safety switch the coil springs of the contactor are not loaded.
  • WO 92/00599 A1 describes an additional electronic contact to a contactor known.
  • the additional contact has at least one switching element that is "ON” and can have an "OFF" state to the position of a contact bridge in the Contactor.
  • the additional contact also has an actuating element that is mechanically connected to the contact bridge and actuate the switching element can.
  • the actuating element has an activator for activating the Switching element that has no mechanical connection to the switching element.
  • the additional contact is in a housing block on the outside of a contactor arranged.
  • the actuating element reaches into the inside of the contactor with a pin and is attached to the contact carrier there.
  • a carriage connected to the pen will together with the pin by moving the contact carrier around the same Distance moved like the contact carrier in the housing block.
  • the position of the Sled is detected by sensors.
  • the following sensors are proposed: Hall sensors, inductive or capacitive proximity sensors and optical Distance sensors.
  • the drives are designed so strong and the movement the contact bridges are so spacious that there is no adjustment effort to adjust of contacts is required.
  • the drive takes a correspondingly considerable Control current.
  • the contact bridges are so that the contact over a long Period can be reliably produced and interrupted, spring-loaded. However, this also requires long switching distances.
  • These shooters don't have one Control contact. By adding an electronic one, for example Additional contact can monitor the switching position of the contactor. adversely on these shooters, however, is their size, which for example does not allow the Attach contactor to a circuit board of an electronic control.
  • a disadvantage of this conventional monitoring of the switch position A relay's load contacts through a control contact is either the drive very powerful or the control contact must be adjusted. Has both Influence on the price of the relay. Choosing a powerful drive in favor of reduced adjustment effort also has an impact on the size of the relay. Conversely, the choice of a minimal drive has an increased adjustment effort result, which causes relatively high costs.
  • An electromechanical switching device is known from DE 199 60 399. This is in particular a safety relay module intended for a safety shutdown.
  • the switching device has at least one mechanical switching contact.
  • an optical sensor is provided which detects the switching position of the Switching contact monitored, so that a common positive control of the Switching contact with a control contact is omitted and still a high degree Security can be achieved.
  • the sensor is an optical sensor, the one Transmitter for emitting a light beam and a light-sensitive receiver includes.
  • the light beam lies in a plane in which the contact surfaces of the Bump the switch contact when the switch contact is closed.
  • the Light beam can also lie in a plane in which a switch contact pin of the Switch contact is in the closed or open state. Alternatively, you can the sensor can be designed as a reflection light barrier. On the contact pin is for this purpose, a reflective surface is formed.
  • This design is only suitable for monitoring a single contact.
  • a safety relay module arranged side by side
  • This document proposes to monitor, a fork light barrier to provide, the light beam emanating from the transmitter side by side arranged normally open contacts in the area of the contact surfaces.
  • Such monitoring is not suitable for relays with both make contacts also openers in a row. Nor can this monitoring indicate that one of the make contacts next to each other is still open, though only one is closed. Above all, this monitoring requires one Align the contacts along a line that is transverse to the direction of movement Switch contact pins runs. It is therefore not possible to monitor one of these Relay normally closed and normally open contacts with a common slide actuate. Moreover, such monitoring is only possible optically. At a Monitoring of a contact in the area of the contact surfaces with an optical Sensor is also only through a dynamic way of monitoring rule out that a voltage spark of a contact is not a wrong signal triggers. Furthermore, an optical sensor arranged in the region of the contacts is the Exposed to pollution.
  • the object of the invention is therefore to a relay of the type mentioned create a plurality of each other via a common slide actuable contacts regardless of whether they are NO or NC contacts with are monitored by a common monitoring device.
  • This relay the costs for both the drive and the adjustment effort should be low can be held. It should be possible without reinforcing the drive to reduce the adjustment effort, or without increasing the adjustment effort Reduce drive. Drive and adjustment effort can even be advantageously reduced become.
  • the monitoring device is therefore a contactlessly operated Monitoring device and has at least one arranged in the housing Sensor in the vicinity of the slide and the contacts which force the contacts at least one activator of the sensor arranged on the slide.
  • a with Mechanical control contact actuated by the same slide is therefore eliminated.
  • the contact spring of this control contact does not have to be moved accordingly, so that the power of the drive can be reduced.
  • at least one Contact spring can be adjusted less.
  • Monitoring the position of the slide has the advantage that the non-contact monitoring device does not must be arranged in the polluting area of the contact chambers. This also allows optimal separation of the load and control circuit in the relay.
  • the position allows of the sensor in the vicinity of the slide and the arrangement or training of the activator on, on or in the slide all with the common slide to monitor switched contacts simultaneously.
  • a single contact remains in one position, the slide also stays in place and with it all other contacts this position.
  • the monitoring device of the relay switches, generates or changes a current via one of the phenomena light, magnetism or capacitance or its tension.
  • the signal generated in this way can now be used to the position or movement of the slide and thus the contact monitor.
  • a relay with monitoring the switching of the load contacts can Monitoring device for monitoring the position or movement of the Have slide. With the monitoring device, an electrical current can generated or a predetermined electrical signal can be changed.
  • the location of the monitoring device can be chosen relatively freely in the relay. It can one, two or more monitoring devices can be provided in the relay. The Signals from such monitoring devices can be user specific used differently.
  • FIG. 1 schematically shows a relay 11 with two switch contacts 13, 15. These are in Engagement with a common slide 17 and positively guided by this.
  • the Slider is controlled by an electromagnetic drive 12.
  • the Forced operation ensures that either all or no contacts 13, 15 connect Join the switching movement. It can therefore be read from the position of the slide 17 whether the contacts 13, 15 are open or closed.
  • the information of the position of the Slider 17 must be able to be recognized electrically or electronically.
  • the position of the slide 17 is monitored with a optoelectric component.
  • This comprises a light emitting diode 21, a light sensitive one and signaling part 23 due to the action of light and an interrupter 25.
  • the interrupter is formed here by the slide 17 itself.
  • a light opening 27 is present in the slide 17 in the slide 17 .
  • the signal is the triggering light beam interrupted by the slide 17, since the contacts 13, 15 are closed.
  • light opening 27 is located in FIG. 2 between the light-emitting ones LED and the signaling part 23, since the contacts 13, 15 are open.
  • the light beam can also be deflected by the interrupter. He can in this case can be directed to different signaling parts 23.
  • Threshold monitoring is electronically adjustable and adjustable. This adjustment can be done internally in the relay or by the user outside the relay. can signaling part 23, however, only the presence or absence of light, only one end position, namely the Open position are recorded. Any differences in signal strength can be corrected electronically.
  • FIG. 3 shows an activated relay 11 with a make contact 13 and a break contact 16 shown.
  • a first optoelectric Component 21, 23 with the light opening 27 in the slide and a first interrupter 25 available.
  • a second optoelectric component 22, 24 with the same light opening 27 in the slide and a second interrupter 26 available.
  • the monitoring can also be done the other way round, namely so that the interruption of the light beam triggers a signal. Then there are 23.24 for two signaling parts two light openings and in between one via one or the other signaling Part 23.24 sliding breaker available. For security reasons however, the version shown is preferable because there is a loss of light emission, e.g. caused by a defect in the power supply, the signal for closed contacts. This position is in security applications from positively driven relay the relevant position.
  • the location of the light emission and light-receiving component can be adjusted. Or it the location of the light opening can be adjusted. These adjustments are made by local movement of the part achieved what compared to the conventional Bending a contact spring is much easier.
  • FIG. 4 and 5 is a variant with an inductive Detection of the position of the slide shown.
  • the induction component according to the figure 4 and 5 have a first coil 31 with a core and a second coil 32 with a Core, which coils 31, 32 are arranged parallel to one another and next to one another are.
  • the first coil 31 is supplied with an alternating current during operation.
  • the resulting alternating magnetic field is generated by the adjacent second coil 32 partially detected so that an alternating current is induced in their windings, which is weaker than that fed into the first coil 31.
  • By the move an iron bridge 33 in the area of the corresponding core ends of the two coils 31, 32 the magnetic field is deflected.
  • the bridge 33 is therefore expediently moved with the slide 17.
  • the induced current can now be measured and from this the position of the slide can be calculated.
  • By taking suitable measures in the area of relay 11 connected software can adjust the bridge 33 and the coils 31,32 entirely in electronics, e.g. the measured values to the Position of the contacts 13,15,16 are related. This advantage is with everyone Versions that can be used with the sliding position of the slide 17th generate changing signals.
  • a switching signal with only two switching states to reach without contact.
  • 6 and 7 is an example to illustrate this shown, in which a reed switch 41 in a manner known per se with a Permanent magnet 43 is switched.
  • the permanent magnet 43 is put together moved with the slider 17. He comes close to the reed switch 41 and switches this.
  • two reed switches 41, 42 can be used simultaneously be switched.
  • Two reed switches 41, 45 can also be connected in series become. This can e.g. both an opener and a closer through the Movement of a single magnet 43 are monitored.
  • this or the magnet 43 can be changed in position.
  • the magnet 43 which is changed with respect to the reed switch can switch the reed switch 41, by having a constantly existing one that goes in the opposite direction Magnetic field closing reed switch superimposed.
  • FIGS. 8 and 9 show an example in which the position of the slide 17 is capacitively determined.
  • the slide 17 has a capacitor plate 51 which is slidable with respect to a second capacitor plate 52.
  • the change in position also changes the measurable on the capacitor Characteristic value. This value can vary depending on the accuracy of work electronically adjusted or software-related to the position of the contacts become.
  • FIG. 12 shows that several Induction loops 53,54,57,58 on both sides of a magnet 43 (or metal part) in Direction of movement can be arranged side by side, each of the other reach differently in the area of influence of the displaceable magnet 43. This allows not only the movement but also the position of the slide 17 be determined.
  • loops 53,63,73 also transversely to the direction of movement can be arranged side by side to the location and movement of a the slider 17 displaceable rod 61 can be seen.
  • the following can be said: On, in or on one of the Contacts of a relay common slide is arranged an activator.
  • the A sensor which can be activated with the activator is arranged in the vicinity of the slide.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Keying Circuit Devices (AREA)
  • Relay Circuits (AREA)
  • Geophysics And Detection Of Objects (AREA)
EP02405874A 2001-11-06 2002-10-11 Relais Withdrawn EP1308976A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH20372001 2001-11-06
CH20372001 2001-11-06

Publications (1)

Publication Number Publication Date
EP1308976A1 true EP1308976A1 (de) 2003-05-07

Family

ID=4567248

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02405874A Withdrawn EP1308976A1 (de) 2001-11-06 2002-10-11 Relais

Country Status (4)

Country Link
US (1) US20030085784A1 (ja)
EP (1) EP1308976A1 (ja)
JP (1) JP2003178662A (ja)
CN (1) CN1426080A (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1837890A1 (de) * 2006-03-20 2007-09-26 ELESTA relays GmbH Relais
CN107086157A (zh) * 2016-02-15 2017-08-22 Ls产电株式会社 电子接触器的辅助继电器

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7825801B2 (en) * 2006-03-09 2010-11-02 Magnasphere Corporation Security switch assemblies for shipping containers and the like
CH704380A2 (de) * 2011-01-24 2012-07-31 Polycontact Ag Schaltanordnung für ein Gurtschloss.
SG2012068896A (en) 2012-09-17 2014-04-28 Schneider Electric South East Asia Hq Pte Ltd Tool and method for switching an electromagnetic relay
JP6071503B2 (ja) * 2012-12-10 2017-02-01 東光東芝メーターシステムズ株式会社 ラッチングリレー及び電力量計
JP6325278B2 (ja) * 2014-02-19 2018-05-16 富士通コンポーネント株式会社 電磁継電器
CN105118738B (zh) * 2015-08-31 2017-10-27 方太命 带位置反馈的磁保持继电器
KR102290582B1 (ko) * 2017-07-26 2021-08-17 미쓰비시덴키 가부시키가이샤 개폐기
WO2023248739A1 (ja) * 2022-06-20 2023-12-28 パナソニックＩｐマネジメント株式会社 接点装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992000599A1 (en) * 1990-06-26 1992-01-09 Abb Strömberg Kojeet Oy Electronic auxiliary contact for a contactor
US5198789A (en) * 1991-07-25 1993-03-30 Westinghouse Electric Corp. Logic level electrical interlock device
EP1120806A1 (de) * 2000-01-28 2001-08-01 ELESTA relays GmbH Sicherheitsrelais, Verwendung eines solchen und Schaltvorrichtung mit einem solchen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992000599A1 (en) * 1990-06-26 1992-01-09 Abb Strömberg Kojeet Oy Electronic auxiliary contact for a contactor
US5198789A (en) * 1991-07-25 1993-03-30 Westinghouse Electric Corp. Logic level electrical interlock device
EP1120806A1 (de) * 2000-01-28 2001-08-01 ELESTA relays GmbH Sicherheitsrelais, Verwendung eines solchen und Schaltvorrichtung mit einem solchen

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1837890A1 (de) * 2006-03-20 2007-09-26 ELESTA relays GmbH Relais
US7633363B2 (en) 2006-03-20 2009-12-15 Elesta Relays Gmbh Relay
CN101071698B (zh) * 2006-03-20 2012-10-03 埃利斯塔替续器股份有限公司 继电器
CN107086157A (zh) * 2016-02-15 2017-08-22 Ls产电株式会社 电子接触器的辅助继电器
EP3211652A1 (en) * 2016-02-15 2017-08-30 LSIS Co., Ltd. Auxiliary relay of electronic contactor

Also Published As

Publication number Publication date
CN1426080A (zh) 2003-06-25
US20030085784A1 (en) 2003-05-08
JP2003178662A (ja) 2003-06-27

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