EP0640243A1 - Relais de puissance polarise. - Google Patents

Relais de puissance polarise.

Info

Publication number
EP0640243A1
EP0640243A1 EP93908825A EP93908825A EP0640243A1 EP 0640243 A1 EP0640243 A1 EP 0640243A1 EP 93908825 A EP93908825 A EP 93908825A EP 93908825 A EP93908825 A EP 93908825A EP 0640243 A1 EP0640243 A1 EP 0640243A1
Authority
EP
European Patent Office
Prior art keywords
contact
relay according
coil
armature
spring
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
EP93908825A
Other languages
German (de)
English (en)
Other versions
EP0640243B1 (fr
Inventor
Helmut Schedele
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 EP0640243A1 publication Critical patent/EP0640243A1/fr
Application granted granted Critical
Publication of EP0640243B1 publication Critical patent/EP0640243B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00Electromagnetic relays
    • H01H51/22Polarised relays
    • H01H51/2272Polarised relays comprising rockable armature, rocking movement around central axis parallel to the main plane of the armature
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00Details of electromagnetic relays
    • H01H50/02Bases; Casings; Covers
    • H01H50/026Details concerning isolation between driving and switching circuit
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00Details of electromagnetic relays
    • H01H50/64Driving arrangements between movable part of magnetic circuit and contact
    • H01H50/641Driving arrangements between movable part of magnetic circuit and contact intermediate part performing a rectilinear movement

Definitions

  • the invention relates to a polarized electromagnetic relay with a coil, an elongated permanent magnet arranged above the coil parallel to the coil axis, which has end poles of the same name at both ends and a central pole of the same name in the middle thereof. with a core arranged inside the coil, which is coupled at both ends via yoke legs to the two ends of the permanent magnet, and with an elongated rocker armature, which is supported over the central pole of the permanent magnet and forms a working air gap with both yoke legs.
  • Such a relay with a -; - ⁇ -pole magnet and a rocker armature mounted above these magnets is known for example from EP-A-0 197 391.
  • the contact system is also arranged above the coil in the area of the armature, the contact springs arranged on both sides of the armature being connected directly to the armature and executing their switching movements directly with the armature.
  • this object is achieved in a relay of the type mentioned in the introduction in that a contact set with at least one contact spring arranged at least approximately to the coil axis and at least one fixed contact element is arranged underneath the coil, and in front of one end of the coil a movable one perpendicular to the coil axis.
  • Slider made of insulating material is arranged, which is coupled on the one hand to a movable end of the armature and on the other hand to a movable end of the contact spring.
  • the contact elements on the underside of the relay are already arranged in the vicinity of the connection side, so that short connection elements do not generate excessive heat loss even when carrying high currents. Since the anchor with the iron parts of the magnet system Eagle ⁇ set to "is the contact elements on the upper side of the coil, is obtained already by the spatial distance-a large insulating distance between the contact system and the magnet system. The coil and the entire magnet system gron ⁇ NEN moreover are shielded from the contact system by means of a corresponding constructive design of a base body with the creation of long insulating sections.
  • This partition can additionally have a laterally open slot into which an insulating plate is inserted. In this way, three superposed insulating material walls between the contact set and the coil are obtained, which ensures the dielectric strength required for certain applications.
  • the arranged on a front side DER coil insulation-shifter which provides a connection between the armature and the contact system her ⁇ ", can by appropriate overlaps with the base body • provide labyrinth-like insulating clearances.
  • FIGS. 1 to 3 show a first embodiment of a relay designed according to the invention in three different sectional views
  • FIG. 4 shows an exploded illustration of the relay from FIGS. 1 to 3 with an additional illustration of the preassembled magnet system
  • FIGS. 5 and 6 show two details of the coupling between armature and slide modified in comparison to FIG.
  • FIG. 7 shows an embodiment of the coupling between the contact spring and slide
  • FIGS. 1 to 4 show a second embodiment of a relay designed according to the invention in three sectional views.
  • the relay shown in FIGS. 1 to 4 has a base body 1 with a central partition 3 arranged parallel to the bottom side, on the side walls 4 and 5 and 6 and 7 which are formed upwards, a trough-shaped receptacle for a plug-in which can be inserted from above Form magnet system 2.
  • the partition wall 3, together with a parallel bottom wall 8 and an extension of the side wall 4 encloses an approximately U-shaped contact space 9, which is open to the right in FIG. 1.
  • the base body 1, together with a cap 10 which can be fitted from above, forms an all-round closed housing.
  • the magnet system 2 has a tubular coil body 11 with end flanges 12 and 13, between which a winding 14 is arranged.
  • a core yoke 15 or 16 with a core leg 15a or 16a is inserted into the tubular opening of the coil former 11 "from both sides, so that the two yoke legs 15b and 16b bent at right angles are parallel and upward. Between them Both yoke legs are arranged above the coil and parallel to the coil axis, a rod-shaped, three-pole magnetized permanent magnet 17, which in the area
  • the permanent magnet consists for example of an AlNiCo alloy and can easily be cut in this case of a tape. By thermoplastic deformation of the reel flanges, the magnet may be attached body at Spulen ⁇ . Also, the core yokes 15 and 16 who - The fixed in a suitable manner on the bobbin.
  • the core legs 15a and 16a are designed so that they form a large overlap area lying next to one another.
  • the two core yokes can be identical and still have a good flow transition between the two Allow sharing. The number of parts and manufacturing steps is thus reduced.
  • An armature 18 designed as a rocker is mounted on the central pole N of the permanent magnet 17.
  • This anchor is slightly bent in a V-shape towards the permanent magnet in its central region, so that the ends 18a and 18b each form an air gap with the corresponding yoke legs 15b and 16b.
  • a bearing spring 19, which is preferably made of ferromagnetic material, is used to mount the armature, which is fastened to the underside of the armature with rivets 20 and is fastened with correspondingly bent latching flaps 21 in corresponding recesses in the permanent magnet 17 by latching.
  • the bearing spring 19 forms a Torsionsba ⁇ dlagerung for the armature.
  • This arrangement and shape of the bearing spring ensures that the armature is mounted without friction and that at the same time there is a good flow transition from the permanent magnet 17 to the armature 18. From above, the anchor is also held or secured in the bearing by a rib 22 formed on the cap 10. Since the armature is supported in its center of gravity, it is largely insensitive to vibrations in its switching state.
  • the armature movement is transmitted via a slide 23 to a contact spring set to be described, this slide being arranged between the side wall 5 of the base body and a side wall of the cap 10 and being movable perpendicular to the connection plane or to the coil axis.
  • This arrangement of the insulating slide between insulating walls results in long, labyrinthine creepage and air gaps between the metal parts of the magnet system and the contact spring set.
  • the coupling between armature 18 and slide 23 takes place through (two) extensions 24 of the armature end 18b, which engage in corresponding recesses 25 of the slide.
  • There is also a divider for securing 26 each provided with a retaining tab 26a, which can be bent upwards according to FIG.
  • FIG. 6 Another possibility of coupling is shown in the detailed illustration in FIG. 6.
  • a hook-shaped extension 27 is formed on the armature end 18b, which is hooked into a correspondingly designed recess 28 of the slide 23.
  • Other embodiments of this coupling are also conceivable.
  • the contact spring set arranged in the contact space 9 below the coil has a contact spring 30 attached to a spring support 29, which at its free end is split in a fork shape into two spring legs 31 and 32.
  • a fixed make contact element 33 is arranged above the contact spring 30.
  • a movable main contact piece 34 fastened on the spring leg 31 forms a main contact with an opposite fixed main contact piece 35 of the contact element 33, the contact pieces of which are made of noble metal.
  • a forward contact is formed with a movable forward contact piece 36 on the spring leg 32 and an opposite fixed forward contact piece 37 on the contact element 33, the contact pieces of which, in a known manner, consist of tungsten or a comparable metal.
  • the contact spring support 29 and the fixed NO contact element 33 are inserted from different sides into the base body 1 which is U-shaped in the lower part, namely the spring support 29 from one side, in FIG. 2 from the left, and the NO contact element 33 in Figure 2 from the right.
  • the attachment takes place in each case by pressing into corresponding plug-in grooves.
  • the magnet system 2 is pressed between the side walls 4, 5, 6 and 7 during assembly from above and is additionally fixed by gluing. Subsequent adjustment is therefore not necessary.
  • an insulating film 39 is inserted into a longitudinal body slot 40 at the point where the distance between the magnet system and the contact area is less than 1 * 2 *. This measure creates the three insulating walls required by VDE regulations.
  • the spring support 29 is made of a non-magnetic, electrically highly conductive material, for example a copper alloy. Since the connecting pin 29a of the spring support is in FIG. 1 near the right edge of the base body, while the attachment point of the contact spring. is close to the left edge, the spring support extends almost the entire length of the relay. In this way, the current path of the spring carrier is deliberately designed to be so long between the connecting pin and the spring attachment that opposite current directions in the spring carrier on the one hand and in the contact spring on the other hand can generate electrodynamic forces which increase the make contact force. In this way, very high contact forces are to be generated in the event of a short circuit that reduce the contact resistance and thus reduce the risk of welding.
  • the normally open contact element consists of ferromagnetic material; in addition, it is cranked in its central part 33a (through which the switching current does not flow), so that it is as close as possible to the contact spring 30 in this area.
  • a short-circuit current flowing in the middle spring generates a magnetic field which the ferromagnetic make contact element would like to attract.
  • the contact spring together with its contact piece " 34 is attracted to the fixed normally open contact element 33. The smaller the distance between the contact spring 30 and the normally open contact element 33, the greater the attraction force.
  • the type of contact force amplification has the very special advantage that the attractive force and thus also the contact force increase with increasing contact erosion.
  • the two different types of contact force amplification add up, namely, on the one hand, the repulsion of the contact spring from its current-carrying spring support 29 and, on the other hand, the attraction to the ferromagnetic normally open contact element 33 , the other effect increases at the same time, so that the relay remains fully functional even during a short circuit during its entire service life.
  • the high short-circuit contact forces that occur prevent the contacts from welding due to the resulting low contact resistance.
  • the ferromagnetic normally open contact element 33 also has the advantage that it attracts the arc which arises when the tungsten lead contact 36, 37 is switched on and off. As a result, the main contact 34, 35 made of silver, for example, is less contaminated by the tungsten evaporation.
  • the electrical conductivity of tungsten is namely 3.5 times lower than that of silver with the same contact force.
  • the lower conductivity of the make contact element 33 is taken into account by two parallel connecting pins 33b.
  • a particular advantage of the combination according to the invention of the polarized rocker armature magnet system with the contact set described above also consists in the fact that the contact is closed when the armature arm 18b moves upward.
  • the shorter make contact element can be arranged above the longer spring support 29, between the contact spring 30 and the coil 14. This results in a particularly favorable use of space beneath the coil former, which also enables a particularly compact design of the relay.
  • the relay it would also be conceivable for the relay to be modified in such a way that a further mating contact element would additionally be arranged below the contact spring in order to form a changeover contact.
  • the spring support 29 would then have to be shaped differently.
  • FIGS. 8 to 10 A further embodiment of a relay designed according to the invention is shown in FIGS. 8 to 10. As far as individual parts of this embodiment are not described in detail, they are the same or similar to the previous embodiment.
  • the relay according to FIGS. 8 to 10 has a basic body 41 which is essentially trough-shaped at the top and U-shaped in the lower part, similar to the basic body 1.
  • a magnet system 42 is inserted in the upper part of the basic body. which has a coil former 43 with a winding 44 and two L-shaped core yokes 45 and 46.
  • the core buildings are graded in such a way that they lie one above the other in the central region and thus have larger contact surfaces in the overlap region. In this case, however, they cannot be identical.
  • a three-pole magnet 47 lying on the coil is made thicker in the region of its central pole and is beveled towards the two end poles, so that the armature 48, which is mounted over the central pole and is designed as a flat plate, can optionally rock a movement to one of the can execute both core yokes.
  • the anchor 48 is extrusion-coated in its central region with a plastic ring 49, which forms a bearing pin 50 on each side of the anchor.
  • the armature is rotatably supported on both sides in bearing bores 51 of the base body via these bearing journals 50.
  • An actuating finger 52 is formed on the right end of the armature, which is coupled to a slide 53 and, as in the previous case, moves the front end of the coil and perpendicularly to its axis.
  • a contact spring 54 Via the slide 53, a contact spring 54 is actuated which a spring support 55 is fastened in the base body.
  • a contact piece 56 of the contact spring interacts with a contact piece of a normally open contact element 58, which is also anchored in plug-in grooves in the base body.
  • a base plate 59 forms, together with a cap 60, a housing which surrounds the relay on all sides.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Relay Circuits (AREA)
  • Control Of Eletrric Generators (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
EP93908825A 1992-05-15 1993-05-03 Relais de puissance polarise Expired - Lifetime EP0640243B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4216076 1992-05-15
DE4216076 1992-05-15
PCT/DE1993/000383 WO1993023866A1 (fr) 1992-05-15 1993-05-03 Relais de puissance polarise

Publications (2)

Publication Number Publication Date
EP0640243A1 true EP0640243A1 (fr) 1995-03-01
EP0640243B1 EP0640243B1 (fr) 1996-08-28

Family

ID=6458954

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93908825A Expired - Lifetime EP0640243B1 (fr) 1992-05-15 1993-05-03 Relais de puissance polarise

Country Status (7)

Country Link
US (1) US5515019A (fr)
EP (1) EP0640243B1 (fr)
JP (1) JPH07506696A (fr)
AT (1) ATE142046T1 (fr)
CZ (1) CZ281297B6 (fr)
DE (1) DE59303588D1 (fr)
WO (1) WO1993023866A1 (fr)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE146302T1 (de) * 1993-03-24 1996-12-15 Siemens Ag Polarisiertes elektromagnetisches relais
GB9317260D0 (en) * 1993-08-19 1993-10-06 Blp Components Ltd Solenoid operated switching devices
DE19532762A1 (de) * 1995-09-05 1997-03-06 Siemens Ag Elektromagnetisches Laststromrelais und Anordnung eines derartigen Relais auf einer Leiterplatte
DE19606884C1 (de) * 1996-02-23 1997-04-30 Schrack Components Ag Elektromagnetisches Relais
DE19705508C1 (de) * 1997-02-13 1998-08-20 Siemens Ag Elektromagnetisches Relais
WO2000005736A1 (fr) * 1998-07-22 2000-02-03 Siemens Electromechanical Components Gmbh & Co. Kg Relais electromagnetique polarise
US6426689B1 (en) * 1999-10-26 2002-07-30 Matsushita Electric Works, Ltd. Electromagnetic relay
DE10316509B3 (de) * 2003-04-09 2005-02-03 Song Chuan Europe Gmbh Elektromagnetisches Relais
JP4329598B2 (ja) * 2004-03-31 2009-09-09 オムロン株式会社 電磁継電器
US7616082B2 (en) * 2004-07-14 2009-11-10 Matsushita Electric Works, Ltd. Electromagnetic relay
JP2008053152A (ja) * 2006-08-28 2008-03-06 Omron Corp 静音型電磁継電器
JP5115236B2 (ja) * 2008-02-29 2013-01-09 オムロン株式会社 電磁石装置
US8130064B2 (en) * 2008-08-01 2012-03-06 Tyco Electronics Corporation Switching device
CN102074419B (zh) * 2010-10-20 2012-10-24 厦门宏美电子有限公司 一种用于调整继电器动簧反力的动簧片及其反力调整方法
JP5821030B2 (ja) * 2011-07-27 2015-11-24 パナソニックIpマネジメント株式会社 電磁リレー
CN103295847B (zh) * 2012-03-01 2016-12-07 德昌电机(深圳)有限公司 驱动装置及具有该驱动装置的继电器
DE102012006436B4 (de) 2012-03-30 2020-01-30 Phoenix Contact Gmbh & Co. Kg Gepoltes elektromagnetisches Relais und Verfahren zu seiner Herstellung
DE102012006433B4 (de) 2012-03-30 2014-01-02 Phoenix Contact Gmbh & Co. Kg Relais mit verbesserten Isolationseigenschaften
DE102012006438A1 (de) 2012-03-30 2013-10-02 Phoenix Contact Gmbh & Co. Kg Relais mit zwei gegensinnig betätigbaren Schaltern
GB201402560D0 (en) * 2014-02-13 2014-04-02 Johnson Electric Sa Improvements in or relating to electrical contactors
JP5835510B1 (ja) * 2014-11-10 2015-12-24 オムロン株式会社 リレー
JP7124758B2 (ja) * 2019-02-20 2022-08-24 オムロン株式会社 リレー
CN113906534B (zh) * 2020-03-06 2024-04-02 沈阳铁路信号有限责任公司 一种增强释放位置保持力的铁路信号继电器

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CH521019A (de) * 1971-04-08 1972-03-31 Sprecher & Schuh Ag Elektromagnetisches Relais
DE2146407C3 (de) * 1971-09-16 1978-10-26 Standard Elektrik Lorenz Ag, 7000 Stuttgart Flachrelais in Miniaturbauweise
DE2148377B2 (de) * 1971-09-28 1973-09-20 Siemens Ag, 1000 Berlin U. 8000 Muenchen Gepoltes Miniaturrelais
DE2453980A1 (de) * 1974-11-14 1976-05-20 Hartmann & Braun Ag Elektromagnetisches relais
DE3303665A1 (de) * 1983-02-03 1984-08-09 Siemens AG, 1000 Berlin und 8000 München Polarisiertes elektromagnetisches relais
US4688010A (en) * 1984-12-22 1987-08-18 Matsushita Electric Works, Ltd. Electromagnetic relay
JPS61218025A (ja) * 1985-03-25 1986-09-27 松下電工株式会社 有極リレ−
CH674431A5 (fr) * 1987-11-30 1990-05-31 Standard Telephon & Radio Ag
EP0501951B1 (fr) * 1989-11-16 1993-10-13 Siemens Aktiengesellschaft Relais electromagnetique
DE4011402A1 (de) * 1990-04-09 1991-10-10 Siemens Ag Elektromagnetisches relais und verfahren zu dessen herstellung

Non-Patent Citations (1)

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Title
See references of WO9323866A1 *

Also Published As

Publication number Publication date
EP0640243B1 (fr) 1996-08-28
WO1993023866A1 (fr) 1993-11-25
US5515019A (en) 1996-05-07
CZ281297B6 (cs) 1996-08-14
CZ271694A3 (en) 1995-02-15
ATE142046T1 (de) 1996-09-15
DE59303588D1 (de) 1996-10-02
JPH07506696A (ja) 1995-07-20

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