EP0038727A1 - Relais électromagnétique à armature pivotante à aimant permanent - Google Patents

Relais électromagnétique à armature pivotante à aimant permanent Download PDF

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Publication number
EP0038727A1
EP0038727A1 EP81400416A EP81400416A EP0038727A1 EP 0038727 A1 EP0038727 A1 EP 0038727A1 EP 81400416 A EP81400416 A EP 81400416A EP 81400416 A EP81400416 A EP 81400416A EP 0038727 A1 EP0038727 A1 EP 0038727A1
Authority
EP
European Patent Office
Prior art keywords
cylinder head
contacts
armature
fixed
fixed 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.)
Ceased
Application number
EP81400416A
Other languages
German (de)
English (en)
French (fr)
Inventor
Gérard Koehler
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.)
Ets Bernier & Cie SA
Original Assignee
Ets Bernier & Cie SA
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 Ets Bernier & Cie SA filed Critical Ets Bernier & Cie SA
Publication of EP0038727A1 publication Critical patent/EP0038727A1/fr
Ceased legal-status Critical Current

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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
    • H01H51/2227—Polarised relays in which the movable part comprises at least one permanent magnet, sandwiched between pole-plates, each forming an active air-gap with parts of the stationary magnetic 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

Definitions

  • the present invention relates to a bistable electromagnetic relay with pivoting armature provided with a permanent magnet.
  • Relays of this type essentially consist of a U-shaped cylinder head fixed on a base and provided with one or two excitation coils.
  • This cylinder head cooperates with an H-shaped frame formed of a permanent magnet constituting the bar of the H and on which are fixed two protruding plates forming pole pieces and constituting the branches of the H.
  • the ends of the cylinder head are housed with a large clearance between these branches, so that, according to the respective polarities applied to these ends, the overflowing plates are glued to it in an oblique position of the frame, in a direction or in the other.
  • the pivoting frame is covered externally with an insulating material and carries flexible blades carrying movable contacts and extending along the branches of the H to cooperate with fixed contacts carried by the base.
  • the present invention aims to provide a relay with pivoting armature which is free from the aforementioned drawbacks.
  • the electromagnetic relay with pivoting armature conforms to the description which was given above and it is characterized in that each flexible blade carries on its free end two movable contacts electrically connected cooperating with contacts fixed to connect them to each other.
  • the closure is effected by a very short bridging of the fixed contacts by means of the electrical connection between the movable contacts, a connection which only interests a very small part of the flexible blade.
  • This blade therefore does not have to be permanently connected to a fixed terminal by any connection, and the current path in the relay is very short.
  • this double break reduces the parasitic capacitance between open contacts.
  • the axis of rotation of the armature is located between the fixed contacts and the point of attachment of the flexible blade to the armature:
  • This arrangement increases, on closing, the lateral friction of the movable contacts on the fixed contacts and the self-cleaning effect.
  • the two movable contacts of the same blade remain located in the same plane parallel to the axis of the cylinder head, and the corresponding fixed contacts are located in the same plane parallel to the plane of the cylinder head , the face of the base which carries these fixed contacts being perpendicular to the plane of the cylinder head and parallel to the axis of said cylinder head.
  • the relay comprises two flexible flexible blades on either side of the armature to cooperate with two pairs of respective fixed contacts, so as to constitute a double-contact change-over contact circuit cut without common point.
  • the relay comprises three equidistant fixed contacts spaced at a predetermined pitch, and a flexible blade cambered so that a movable contact is located in each interval between the fixed contacts, the movable contacts being offset relative to each other by the value due not mentioned above.
  • each branch of the cylinder head is provided with a coil, and the ends of these branches have flats for cooperating plane on plane with the protruding plates of the pivoting frame in its extreme angular positions.
  • the assembly formed by the cylinder head and its coils is overmolded in an insulating material to form a parallelepipedic block, a first face of which carries terminals for connection of the coils and fixed contacts, and a second face of which is perpendicular to the first. , leaves the ends of the branches of the cylinder head emerging and comprises means for centering and pivoting the armature coaxially with the cylinder head.
  • a perfectly protected block is thus produced from which only the ends of the cylinder head and the lugs to be connected emerge.
  • the coil is therefore not likely to pollute the contacts.
  • the aforementioned second face of the block is surrounded by a skirt extending the block and enclosing the ends of the legs of the cylinder head, and this skirt is designed to receive a cover comprising part of the centering and pivoting of the armature.
  • the operation of the relay can thus be inspected before fitting the cover.
  • the latter is simpler to produce than a cover.
  • the relay comprises a removable trough provided to adapt to the aforementioned second face of the block, and this trough comprises, on its bottom, part of the means for centering and pivoting the armature and, on one of its sides, fixed contacts.
  • This embodiment makes it possible to use two different insulating materials for overmolding and for the trough, the second being able in particular to be adapted, for example, to high-frequency isolation.
  • the cylinder head comprises two additional branches opposite the first, arranged symmetrically and overmolded with it in the same block to cooperate with a second armature symmetrical to the first and provided with similar contact circuits.
  • a relay according to the invention comprises a U-shaped cylinder head 1 fixed on a plate 2 of a base 3, on the two branches 4 of which are wound coils 5.
  • the two branches 4 protrude of the plate 2 in order to be housed with a large clearance between the branches of a pivoting frame 6 in H, the pivot axis being coincident with the axis of the cylinder head 1.
  • This frame consists essentially of a permanent magnet 7 forming the bar of the H on which are fixed two protruding plates 8a, 8b forming pole pieces. These plates are covered externally with an insulating coating 9 completed by two insulating plates 11a, 11b covering the magnet 7 and provided with housings for receiving pivots 12a, 12b secured to a base 3 which serve to center and to allow the l 'frame 6.
  • the ends of the branches 5 of the cylinder head are provided with flats 13 arranged to allow plane cooperation on plan of the protruding plates 8a, 8b with said branches.
  • each blade On the insulating coating 9 are fixed two flexible strips 14 of conductive material by one of their ends along each projecting plate 8a, 8b. At the other end of each blade are fixed two movable contacts 15a, 15b to cooperate with fixed contacts 16a, 16b.
  • the attachment point 17 of each blade is located such that the axis of the pivots 12a, 12b is located between the movable contacts and said attachment point.
  • the fixed contacts 16a and 16b corresponding to the same blade are located in the same plane parallel to the plane of the cylinder head 1 and are connected directly and without bending to respective lugs 18a, 18b emerging from one face 19 of the base which carries these contacts and which is perpendicular to the plane of the cylinder head and parallel to the axis of the cylinder head.
  • This face 19 also carries terminals 21 for output of the coils 5 (connection not shown).
  • the armature 6 pivots so, for example, that, with reference to FIG. 1, the plate 8a comes to apply on the branch 4 of left, and that the plate 8b comes to apply on the branch of right.
  • the movement of the lower blade 14 then applies the movable contacts 15a, 15b to the fixed contacts 16a, 16b ( Figure 2). These fixed contacts are then electrically connected by a very short portion of the blade 14, of negligible resistance.
  • each movable blade provides a significant accompanying effect which causes, on closing, a lateral friction of the movable contacts on the fixed contacts, which has the effect of self-cleaning of the contacts.
  • the blades 14 do not play any conducting role and do not have to be connected to an output terminal by a connection which should be flexible.
  • the relay which has just been described constitutes a double-break change-over contact circuit with no common point.
  • a U-shaped cylinder head provided with two coils 105 has two branches 104 located between the branches 108a, 108b of an armature 106 in H pivotally mounted and comprising a permanent magnet 107.
  • this frame On one side of its coating insulating 109, this frame carries a flexible blade 114 which comprises two branches 114a, 114b each carrying a movable contact, respectively 115a, 115b, each of these contacts operating on the two faces of the blade.
  • Three fixed contacts 116a, 116b, 116c are arranged on the face 119 of the base 103 so that they are regularly spaced by a predetermined pitch. These contacts are extended by lugs 118a, 118b, 118c.
  • the distance between the branches 114a and 114b of the blade 114 is equal to the aforementioned pitch, so that, in an extreme position of the frame 6, the movable contact 115a comes on the contact 116a and the movable contact 115b on the contact 116b , whereas, in the other extreme position, the movable contact 115a comes on the contact 116b, the movable contact 115b coming on the contact 116c.
  • FIG. 4 shows a variant in which the yoke 201 comprises two additional branches 204a opposite the branches 204 and arranged symmetrically to cooperate with a second frame (not shown) corresponding to two other pairs of fixed contacts 223a, 223b.
  • the block 222 is extended on each side of the relay by a skirt, respectively 224a, 224b in which the fixed contacts are fixed.
  • the pivots 212a of the frame are integral with the block 222, while the pivots 212b are integral with removable covers 225a, 225b which close the skirts 224a, 224b respectively. Before fitting the covers, the skirts protect the moving parts of the relay.
  • the skirts are eliminated and a trough 327 comes to cooperate with the block 322 taking the place of both the skirt and the cover.
  • a pivot 312b for the frame (not shown) and on one of the faces are fixed fixed contacts 316a, 316b which are extended by lugs 318a, 318b.
  • This arrangement makes it possible to provide a different insulating material for the block 222 and for the trough 327 which carries the contacts.
  • a material may be chosen for the block which is suitable for overmolding and, for the trough, a material providing good insulation at high frequencies.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Breakers (AREA)
EP81400416A 1980-03-21 1981-03-18 Relais électromagnétique à armature pivotante à aimant permanent Ceased EP0038727A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8006302A FR2486303A1 (fr) 1980-03-21 1980-03-21 Relais electromagnetique a armature pivotante a aimant permanent
FR8006302 1980-03-21

Publications (1)

Publication Number Publication Date
EP0038727A1 true EP0038727A1 (fr) 1981-10-28

Family

ID=9239924

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81400416A Ceased EP0038727A1 (fr) 1980-03-21 1981-03-18 Relais électromagnétique à armature pivotante à aimant permanent

Country Status (4)

Country Link
US (1) US4367447A (ref)
EP (1) EP0038727A1 (ref)
JP (1) JPS56160736A (ref)
FR (1) FR2486303A1 (ref)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3224468A1 (de) * 1982-06-30 1984-01-05 Siemens AG, 1000 Berlin und 8000 München Relais mit brueckenkontaktfeder
DE3223867A1 (de) * 1982-06-25 1984-01-05 Siemens AG, 1000 Berlin und 8000 München Polarisiertes relais
EP0113440A1 (de) * 1982-12-07 1984-07-18 Siemens Aktiengesellschaft Elektromagnetisches Relais
EP0110579A3 (en) * 1982-11-02 1986-10-01 Nec Corporation Polar relay
EP0096350A3 (en) * 1982-06-03 1986-12-30 Siemens Aktiengesellschaft Berlin Und Munchen Electromagnetic relay with rotating armature
EP0130511B1 (de) * 1983-06-28 1989-06-14 Hengstler GmbH Geschäftsbereich Haller-Relais Elektromagnetisches Relais mit Umschaltfeder
DE3837666A1 (de) * 1988-11-05 1990-05-10 Gruner Kg Relais Fabrik Relais
EP0192928B1 (de) * 1985-02-12 1990-06-13 Siemens Aktiengesellschaft Elektromagnetisches Relais
EP1840923A3 (en) * 2006-03-30 2007-12-26 TYCO Electronics Austria GmbH Magnet system with H-shaped armature for a relay

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19933797A1 (de) * 1999-07-19 2001-03-08 Tyco Electronics Logistics Ag Relais mit Wippanker
WO2012128072A1 (ja) * 2011-03-22 2012-09-27 パナソニック株式会社 接点装置
GB201215926D0 (en) * 2012-09-06 2012-10-24 Dialight Europ Ltd Improvements in rotary actuators
DE102014103247A1 (de) * 2014-03-11 2015-09-17 Tyco Electronics Austria Gmbh Elektromagnetisches Relais

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2741728A (en) * 1952-08-29 1956-04-10 Ericsson Telephones Ltd Polarized electromagnetic devices
DE2262669A1 (de) * 1972-12-21 1974-06-27 Telefonbau & Normalzeit Gmbh Elektromagnetisches hochzuverlaessiges relais
FR2271654A1 (ref) * 1974-05-15 1975-12-12 Matsushita Electric Works Ltd
FR2392484A1 (fr) * 1977-05-24 1978-12-22 Siemens Ag Relais electromagnetique

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2407184C2 (de) 1974-02-15 1982-09-02 Schaltbau GmbH, 8000 München Elektromagnetisches Relais mit zwei Ankern

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2741728A (en) * 1952-08-29 1956-04-10 Ericsson Telephones Ltd Polarized electromagnetic devices
DE2262669A1 (de) * 1972-12-21 1974-06-27 Telefonbau & Normalzeit Gmbh Elektromagnetisches hochzuverlaessiges relais
FR2271654A1 (ref) * 1974-05-15 1975-12-12 Matsushita Electric Works Ltd
FR2392484A1 (fr) * 1977-05-24 1978-12-22 Siemens Ag Relais electromagnetique

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Bell Laboratories Record, Vol. 44, Juin 1963 Murray Hill, US C. SCHNEIDER: "A Miniature Latch-in Relay for the Telstar Satellite pages 241-243 * page 242, page 243, colonne de gauche, ligne 21 * *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0096350A3 (en) * 1982-06-03 1986-12-30 Siemens Aktiengesellschaft Berlin Und Munchen Electromagnetic relay with rotating armature
DE3223867A1 (de) * 1982-06-25 1984-01-05 Siemens AG, 1000 Berlin und 8000 München Polarisiertes relais
DE3224468A1 (de) * 1982-06-30 1984-01-05 Siemens AG, 1000 Berlin und 8000 München Relais mit brueckenkontaktfeder
EP0110579A3 (en) * 1982-11-02 1986-10-01 Nec Corporation Polar relay
EP0113440A1 (de) * 1982-12-07 1984-07-18 Siemens Aktiengesellschaft Elektromagnetisches Relais
EP0130511B1 (de) * 1983-06-28 1989-06-14 Hengstler GmbH Geschäftsbereich Haller-Relais Elektromagnetisches Relais mit Umschaltfeder
EP0192928B1 (de) * 1985-02-12 1990-06-13 Siemens Aktiengesellschaft Elektromagnetisches Relais
DE3837666A1 (de) * 1988-11-05 1990-05-10 Gruner Kg Relais Fabrik Relais
EP1840923A3 (en) * 2006-03-30 2007-12-26 TYCO Electronics Austria GmbH Magnet system with H-shaped armature for a relay
US7495535B2 (en) 2006-03-30 2009-02-24 Tyco Electronics Austria Gmbh Magnet system with H-shaped armature for a relay

Also Published As

Publication number Publication date
US4367447A (en) 1983-01-04
FR2486303A1 (fr) 1982-01-08
JPS56160736A (en) 1981-12-10
FR2486303B1 (ref) 1983-04-01

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Inventor name: KOEHLER, GERARD