EP0791944A2 - Relais électromagnétique - Google Patents

Relais électromagnétique Download PDF

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Publication number
EP0791944A2
EP0791944A2 EP97102087A EP97102087A EP0791944A2 EP 0791944 A2 EP0791944 A2 EP 0791944A2 EP 97102087 A EP97102087 A EP 97102087A EP 97102087 A EP97102087 A EP 97102087A EP 0791944 A2 EP0791944 A2 EP 0791944A2
Authority
EP
European Patent Office
Prior art keywords
armature
contact
spring
coil
relay according
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
EP97102087A
Other languages
German (de)
English (en)
Other versions
EP0791944A3 (fr
EP0791944B1 (fr
Inventor
Leopold Mader
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 Electronics Austria GmbH
Original Assignee
EH Schrack Components AG
Schrack Components 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 EH Schrack Components AG, Schrack Components AG filed Critical EH Schrack Components AG
Publication of EP0791944A2 publication Critical patent/EP0791944A2/fr
Publication of EP0791944A3 publication Critical patent/EP0791944A3/fr
Application granted granted Critical
Publication of EP0791944B1 publication Critical patent/EP0791944B1/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
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/56—Contact spring sets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/026—Details concerning isolation between driving and switching circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/24—Parts rotatable or rockable outside coil
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
    • H01H50/041—Details concerning assembly of relays
    • H01H50/043—Details particular to miniaturised relays
    • H01H2050/044—Special measures to minimise the height of the relay
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
    • H01H2050/365—Stationary parts of magnetic circuit, e.g. yoke formed from a single sheet of magnetic material by punching, bending, plying
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/56—Contact spring sets
    • H01H50/58—Driving arrangements structurally associated therewith; Mounting of driving arrangements on armature

Definitions

  • the invention relates to an electromagnetic relay with an electromagnet system, consisting of an elongated coil with an axis parallel to a base plane, a U-shaped core yoke, of which a core leg axially penetrates the coil and a yoke leg parallel to it below the coil via a Part of the coil length extends and forms a pole section, and a substantially flat armature, which extends approximately in extension to the yoke leg below the coil, is supported with a bearing end section at the free end of the core and with an opposite pole end section Pole portion of the yoke leg overlaps to form a working air gap, further with a contact arrangement with at least one fixed contact attached to a carrier and with a movable contact carried by a switching spring, and with an actuator for transmitting the armature movement to the switching spring.
  • An unpoled relay with the structure mentioned at the outset is known, for example, from EP 0 375 398 A2.
  • the magnet system contains a U-shaped core yoke, an armature being mounted on a core end and forming the working air gap with a yoke leg below the coil.
  • the armature is arranged there in the overlap region between the yoke leg and the coil, so that the switching movement of the armature is directed outward from the coil.
  • the contacts are located under the moving armature, which means that there is no optimal use of space.
  • the relay there also has only one normally open contact, while a changeover contact requires additional overall height. Since there are no very large insulating distances between the magnet system and the contact arrangement, the switching capacity is limited.
  • the aim of the present invention is to provide a relay of the type mentioned at the outset with a flat structure and the smallest possible volume, in which a good use of space is achieved with a few individual parts.
  • the relay should be able to handle high switching capacities with low excitation power; for this purpose, the construction should also allow good insulation between the magnet system and the contact arrangement.
  • the contact arrangement should enable both a normally open or normally closed contact and a changeover contact within the low construction mentioned.
  • this goal is achieved with a relay of the type mentioned in that the pole section of the yoke leg lies between the armature and the coil, that the switching spring extends substantially below the armature and that the contacts in a below the yoke leg in the area in front of Movable armature end contact space are arranged.
  • the armature is attracted towards the coil when excited, that is to say the switching spring is pulled in this direction.
  • the yoke leg is as close as possible to the coil, so that the contact space located below the yoke leg has more height than the area located below the movable armature.
  • the actuator acts in the area between the clamping and the contact end on the switching spring.
  • a base body made of insulating material is arranged below the magnet system, which is the switching spring and the carrier or carriers for the Carries fixed contacts and forms a partition between the magnet system and the contact arrangement, which has only one opening for the actuator.
  • the partition of the base body is designed step-shaped, on the one hand to form the higher contact space below the yoke leg and on the other hand to provide enough space below the armature for its switching movement.
  • the base body furthermore has molded-on side walls which at least partially surround the switch compartment and on which a spring support carrying the switch spring and a NO contact carrier and / or an NC contact carrier are anchored in plug shafts by plug-in fastening.
  • the partition wall can form an insulating collar projecting towards the underside at its edge.
  • the actuating element itself has a hook part suspended on the armature and a foot part engaging on the switching spring, the latter being able to engage in a labyrinthine manner with the insulating collar. In this way, particularly long creepage distances between the armature or the magnet system on the one hand and the switching spring on the other are created, so that the relay is suitable for high switching capacities despite the low overall height.
  • the essentially elongated armature has a short bearing end section which is angled toward the core and is mounted in a recess in a coil body flange which surrounds the core end on three sides.
  • the armature is preferably biased with its movable end away from the yoke leg by a return spring, whereby it rests pivotably with a central section on a lever line of the base body parallel to the bearing axis, so that due to the lever action its bearing section is pressed into the bearing.
  • This lever line is expediently formed by a rolling edge of the base body; However, it would also be conceivable to provide an edge in the central region of the armature itself, with which it could also roll off a flat surface of the base body.
  • the restoring spring is expediently formed by at least one restoring leg which is integrally connected to the switching spring but is effectively separated from a contact spring which bears the movable contact.
  • the relay shown in FIGS. 1 to 7 consists of a base body 1, which has a contact arrangement 2 on its underside with an actuating element 3, and a magnet system 4 arranged above the base body.
  • the relay system is arranged in a housing, which is formed by a bottom plate 5 and a cap 6 are formed.
  • the base body 1 is box-shaped made of insulating material and forms a partition 11 between the magnet system 4 and the contact arrangement 2, which has only one opening 12 for the actuator 3.
  • a control room 13 is formed, the side walls 14 of the Base body is surrounded and which on one side merges into a contact space 13a of greater height by a stepped design of the partition 11.
  • a switching spring 21 approximately parallel to the bottom of the relay, which is defined by the base plate 5.
  • the switching spring 21 is cut as a flat leaf spring and forms a frame-shaped contact spring 22 with current-carrying side legs 22a, which unite towards the free end to form a contact section 22b; on this a movable contact 29 is attached.
  • two actuating tabs 22c are cut free on both sides within the frame shape in such a way that they point in the direction of the clamping point.
  • the switching spring 21 forms, in one piece with the contact spring 22, a fork-shaped return spring 23, which is essentially separated from the fastening end 21a of the switching spring starting from the contact spring 22 and, with two return legs 23a, essentially parallel within the frame shape of the contact spring 22, parallel to its side legs 22a extends (see also Figure 3).
  • the return spring 23 forms with its return legs 23a a U-shape, which is adapted to the outer contour of the actuator 3 to be described.
  • the switching spring 21 is fastened at its fastening end 21a to a spring support 24, which in turn is anchored via fastening tabs 24a in insertion shafts 14 on opposite side walls 15 of the base body 1.
  • the fastening tabs 24a have hook-shaped contours for better anchoring; there is also a terminal lug on the spring support 24 24b formed, which is guided through a corresponding opening in the base plate 5 to the outside.
  • the contact arrangement further comprises an NC contact carrier 25 with an NC contact 26 and a NO contact carrier 27 with a normally open contact 28.
  • Both contact carriers are anchored in corresponding plug shafts 16 of the base body 1 via fastening sections 25a and 27a.
  • they each have terminal lugs 25b and 27b, which are guided through the base plate 5 to the outside.
  • the contact carriers 25 and 27 are designed and arranged in the contact space 13a so that the movable contact 29 optionally cooperates with the normally closed contact 26 and the normally open contact 28.
  • the magnet system 4 arranged above the base body has a coil body 41 with a winding 42, the axis of which lies parallel to the bottom side of the relay.
  • a core yoke 43 integrally forms a core leg 43a, which extends axially through the entire coil, and a yoke leg 43b, which extends parallel to the core leg below the coil, close to the winding, up to approximately half the coil length.
  • An armature 44 extends with its main part flatly in the extension of the yoke leg 43b, a pole end section 44a which is set back in cross section overlapping a pole section 43c of the yoke leg which is also reduced in cross section.
  • a bearing end portion 44b of the armature is angled toward the free core end 43d and is mounted in a pocket 45 of a coil former flange 41a such that it rolls on the free core end 43d.
  • the coil former flange 41a surrounds this free core end 43d on three sides and secures it the bearing end portion 44b of the armature with retaining ribs 41b also against wandering away in the axial direction of the coil. Otherwise, this armature end portion 44b of the armature is pressed into the bearing on the core end 43d by the restoring force of the restoring spring 23. This restoring force acts on the movable armature end 44c and pulls it downward away from the coil.
  • the armature is pivoted as a lever when the magnet system is not excited about a rolling edge 17 on the upper side of the partition 11 - counterclockwise in the illustration of FIG. 2 - in such a way that the bearing end section 44b of the armature is prestressed into the bearing. In this way, a separate bearing spring is not necessary.
  • the arrangement of the yoke leg 43b directly on the winding 42 pulls the armature 44 toward the coil when the magnet system is excited, so that the switching spring 21 is also pulled in this direction via the actuating member 3.
  • the actuator 3 which transmits the switching movement of the armature, has a hook part 31 which passes through the opening 12 of the partition 11 substantially perpendicular to the base plane and is hooked to an opening 44d of the armature 44 with its hook-shaped end.
  • a recess 43e is also provided in the pole section 43c of the pole leg 43b, which enables the armature to be placed completely against the yoke leg in this region.
  • the actuator 3 has a flat foot part 32, which lies essentially in the plane of the switching spring 21 and in this example has an M-shaped shape.
  • the middle leg of the M is connected to the hook part 31.
  • a guide groove 33 is formed in each of the two outer legs of the foot part 32, in each of which a guide lug 23b of the adjacent reset leg 23a engages.
  • An actuating cam 34 is formed laterally on each of the free ends of these outer legs and lies below the adjacent actuating tab 22d of the contact spring and, when the actuating member 3 moves upward, brings the contact spring into the closed position.
  • the return position of the armature with respect to the closed position of the normally closed contact can be set, even if the return spring and the contact spring are originally in one plane. Otherwise, a corresponding position can also be adjusted by slightly bending the reset legs 23a on the one hand and the actuating tabs 22c on the other.
  • an insulating collar 18 is formed on the partition wall 11 towards the underside, which engages like a labyrinth between the legs of the M-shaped foot part 32 of the actuating member 3 and in this way creates long creepage distances.
  • the relay is installed in such a way that the magnet system according to FIG. 4 is preassembled on the one hand and on the other hand the contact arrangement 3 is anchored in the base body from the underside.
  • the magnet system according to FIG. 4 is put together with the base body according to FIG. 5, coil connecting pins 46 being inserted into corresponding openings in the base body.
  • the actuator 3 is inserted from the bottom through the frame-shaped switching spring and hooked into the armature.
  • the actuator 3 is first in an inclined position, as shown in dashed lines in Figure 2 with the reference numeral 3 ', upwards, inserted with the hook part 31 in the opening 12 and then pivoted into the final position.
  • This type of assembly of the actuator without snap connections also avoids any plastic abrasion that could endanger the contacts.
  • the housing is then formed, which can also be sealed in a known manner.
  • FIGS. 8 and 9 show two further possible embodiments of the switch spring and corresponding to the actuator.
  • the switching spring 121 according to FIG. 8 has a contact spring 122 which, as a modification to the contact spring 22 from FIG. 3, now has only a single, centrally arranged leg, at the end of which a contact section 122b carries the movable contact 29.
  • the return spring 123 is formed by two return legs 123a running on both sides next to the outer sides of the contact spring, each of which has actuating lugs 123b angled outward at their free ends.
  • a modified actuator 103 is also provided.
  • This has a U-shaped shape with two hook parts 131 as outer legs and a foot part 132 connecting the two hook parts, which extends below the switching spring transversely to the latter and has both a central cam section 134 for actuating the contact spring 122 and two laterally arranged guide grooves 133 for Includes the mentioned guide tabs 123b.
  • the two hook parts 131 extend up to the anchor, the anchor of course being designed accordingly on both sides to allow hooking of the hook parts 131, and the base body in its partition instead of the previously described central opening 12 now two on the outside must have horizontal openings.
  • the spring support 24 is designed as in the previous embodiment.
  • FIG. 9 shows a further modification compared to FIG. 8.
  • the switching spring 221 has a central contact spring 222 with a contact section 222b and a return spring 223 formed by outside return legs 223a, the return legs each having a guide lug 223b at their ends.
  • the actuator 203 is similar to the actuator 103 U-shaped. It has two hook parts 231 and a transverse foot part 232, in which guide grooves 233 are formed for receiving the guide lugs 223b.
  • the contact spring 222 is now not actuated directly on the center leg 222a, but rather via actuating tabs 222c formed on the side, which are approximately aligned with the restoring legs 223a and each rest on an actuating cam 234 of the actuating member 203.
  • FIG. 8 for adapting the armature and the base body to the modified actuating element. Otherwise, the function results from the description of the first exemplary embodiment.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Linear Motors (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Surgical Instruments (AREA)
  • Valve Device For Special Equipments (AREA)
  • Cookers (AREA)
EP97102087A 1996-02-23 1997-02-10 Relais électromagnétique Expired - Lifetime EP0791944B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19606884A DE19606884C1 (de) 1996-02-23 1996-02-23 Elektromagnetisches Relais
DE19606884 1996-02-23

Publications (3)

Publication Number Publication Date
EP0791944A2 true EP0791944A2 (fr) 1997-08-27
EP0791944A3 EP0791944A3 (fr) 1998-10-07
EP0791944B1 EP0791944B1 (fr) 2002-05-02

Family

ID=7786275

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97102087A Expired - Lifetime EP0791944B1 (fr) 1996-02-23 1997-02-10 Relais électromagnétique

Country Status (6)

Country Link
US (1) US5844456A (fr)
EP (1) EP0791944B1 (fr)
JP (1) JP3779020B2 (fr)
AT (1) ATE217118T1 (fr)
DE (2) DE19606884C1 (fr)
ES (1) ES2175201T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1467394A1 (fr) * 2003-04-09 2004-10-13 Song Chuan Europa GmbH Relais électromagnétique

Families Citing this family (24)

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JP4307182B2 (ja) * 2003-08-22 2009-08-05 富士通コンポーネント株式会社 電磁継電器
JP3989928B2 (ja) * 2004-11-02 2007-10-10 ウチヤ・サーモスタット株式会社 電磁リレー
JP4116022B2 (ja) * 2005-07-11 2008-07-09 ウチヤ・サーモスタット株式会社 電磁リレー
DE102006007603B4 (de) * 2006-02-18 2008-04-30 Tyco Electronics Austria Gmbh Relais mit reduziertem Kriechstrom
DE102006016657A1 (de) * 2006-04-08 2007-10-11 Hella Kgaa Hueck & Co. Mehrfachlastschalter für elektrische Bordnetze in Kraftfahrzeugen
JP4483846B2 (ja) 2006-09-21 2010-06-16 パナソニック電工株式会社 ソレノイド
DE102007024128A1 (de) * 2007-05-24 2008-11-27 Tyco Electronics Austria Gmbh Spulenkörper und Spulengrundkörper für ein elektromagnetisches Relais
JP4943949B2 (ja) * 2007-06-08 2012-05-30 ウチヤ・サーモスタット株式会社 電磁継電器
CN102097255A (zh) * 2010-12-16 2011-06-15 中国振华集团群英无线电器材厂 微型密封射频电磁继电器
JP6010991B2 (ja) * 2012-04-09 2016-10-19 オムロン株式会社 電磁継電器
JP5880233B2 (ja) * 2012-04-09 2016-03-08 オムロン株式会社 電磁継電器
CN202650990U (zh) * 2012-07-02 2013-01-02 宁波福特继电器有限公司 一种小型大功率磁保持继电器
JP2014165152A (ja) * 2013-02-27 2014-09-08 Fujitsu Component Ltd 電磁継電器
JP6065661B2 (ja) * 2013-03-08 2017-01-25 オムロン株式会社 電磁継電器
GB201402560D0 (en) * 2014-02-13 2014-04-02 Johnson Electric Sa Improvements in or relating to electrical contactors
CN104538250B (zh) * 2015-02-03 2016-08-24 佛山市川东磁电股份有限公司 一种磁力开关
CN105244233B (zh) * 2015-10-15 2017-09-29 首瑞（天津）电气设备有限公司 一种磁保持继电器动触头推动机构
CN105244231A (zh) * 2015-11-04 2016-01-13 中国电子科技集团公司第四十研究所 单刀三掷n型高频率大功率射频同轴继电器
CH713442B1 (de) * 2017-02-08 2021-03-31 Elesta Gmbh Ostfildern De Zweigniederlassung Bad Ragaz Relais.
JP2018170241A (ja) * 2017-03-30 2018-11-01 富士通コンポーネント株式会社 電磁継電器
CN111295729B (zh) * 2017-11-01 2022-12-06 松下知识产权经营株式会社 电磁继电器和电磁装置
JP7149824B2 (ja) * 2018-11-30 2022-10-07 富士通コンポーネント株式会社 電磁継電器
US11501938B2 (en) * 2019-07-09 2022-11-15 Xiamen Hongfa Electroacoustic Co., Ltd. Magnetic latching relay
JP7638633B2 (ja) * 2020-06-30 2025-03-04 Ｆｃｌコンポーネント株式会社 電磁継電器

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1467394A1 (fr) * 2003-04-09 2004-10-13 Song Chuan Europa GmbH Relais électromagnétique

Also Published As

Publication number Publication date
JP3779020B2 (ja) 2006-05-24
US5844456A (en) 1998-12-01
EP0791944A3 (fr) 1998-10-07
JPH09320433A (ja) 1997-12-12
DE19606884C1 (de) 1997-04-30
ATE217118T1 (de) 2002-05-15
ES2175201T3 (es) 2002-11-16
EP0791944B1 (fr) 2002-05-02
DE59707127D1 (de) 2002-06-06

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