EP0012696B1 - Relais électromagnétique étanche - Google Patents

Relais électromagnétique étanche Download PDF

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Publication number
EP0012696B1
EP0012696B1 EP79401021A EP79401021A EP0012696B1 EP 0012696 B1 EP0012696 B1 EP 0012696B1 EP 79401021 A EP79401021 A EP 79401021A EP 79401021 A EP79401021 A EP 79401021A EP 0012696 B1 EP0012696 B1 EP 0012696B1
Authority
EP
European Patent Office
Prior art keywords
coil
relay
relay according
housing
movable
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.)
Expired
Application number
EP79401021A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0012696A1 (fr
Inventor
Raymond Bernier
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT79401021T priority Critical patent/ATE1260T1/de
Publication of EP0012696A1 publication Critical patent/EP0012696A1/fr
Application granted granted Critical
Publication of EP0012696B1 publication Critical patent/EP0012696B1/fr
Expired 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
    • H01H50/02—Bases; Casings; Covers
    • H01H50/026—Details concerning isolation between driving and switching circuit

Definitions

  • the present invention relates to a sealed electro-magnetic relay, in particular of small dimensions, intended in particular for telephony.
  • Patent FR-A-2,181,822 discloses a sealed miniature relay comprising a housing formed by two glued half-shells and containing a drowned coil after installation by a resin.
  • Conductive bars are overmolded Gans the side faces of the housing and they emerge to form on the one hand the output connections and on the other hand, by bent ends, the fixed contacts.
  • a drawback of this relay is that this bending must be carried out after the fact, which constitutes a delicate operation which can lead to a certain inaccuracy in the positioning of the fixed contacts.
  • the inclusion of the coil after mounting in a cast resin does not provide a rigorous positioning of the latter.
  • patent FR-A-2,294,534 describes a relay in which the pole pieces are overmolded in the housing and have a camber located within this overmolding.
  • the present invention aims to achieve a relay whose housing constitutes a perfectly sealed block and which provides a rigorous positioning of the contacts avoiding any subsequent readjustment.
  • the sealed electromagnetic relay comprises, in a multi-sided housing, motor members comprising in particular a coil and a magnetic circuit for actuating at least one movable conductive blade cooperating with fixed contacts, and protruding output connections outside of said housing on one of the faces of the latter.
  • Conductor bars are overmolded in at least one of the faces of the housing to form on the one hand the fixed contacts and the support of the movable blade and on the other hand, opening out of the housing parallel to said side face , part of the relay output connections.
  • This relay is characterized in that the box is constituted by a parallelepipedic belt open on at least one of its lateral faces, containing the motor members, and the base of which is crossed by the output connections of the coil.
  • the side face of the housing in which the conductive bars are overmolded is constituted by a cheek fitted onto the open face of the belt and welded onto it, the overmolded conductive bars are arched within the overmold so that their ends forming the contacts fixed and the support of the mobile bar open inside the belt, perpendicular to the cheek.
  • the conductive bars are rigorously positioned in the cheek which is itself rigorously positioned by its fitting into the belt, and all of the contacts are enclosed in the sealed housing without additional provision.
  • the ends of the conductive bars opening into the interior of the housing are curved, their convexity being directed towards the movable conductive strip, so as to facilitate contact with this strip.
  • the aforementioned conductive bars are doubly arched at their outlet from the housing to come into alignment with connection terminals of the relay coil.
  • the relay coil is overmolded in the housing, together with the magnetic circuit, in a mass of insulating material substantially parallelepipedal serving as a support for this magnetic circuit which is in L and whose two branches s '' are supported on two sides of the coil overmolding.
  • a first branch of the magnetic circuit is transverse to the axis of the coil and carries a magnetic core coaxial with the coil and a second branch of said circuit extends parallel to the coil to the end of the latter.
  • the relay comprises an armature sensitive to the action of the coil for actuating the conductive strip.
  • This armature is articulated around an axis substantially coinciding with the end of the second branch of the magnetic circuit and comprises a pusher arm of non-magnetic material which extends along said second branch.
  • This non-magnetic material prevents any loss of flux as it usually occurs with magnetic materials.
  • this material has a certain elasticity to exert a spring effect on the movable conductive blades and more surely ensure contact.
  • the push arm has a bent branch in which a magnetic plate is molded.
  • the actuating frame normally having to have a bend, this bend is located in the non-magnetic part constituting the pusher arm, and is obtained by molding, which avoids having to bend a fragile metal part.
  • the overmolding of the metal plate inside this bend ensures the electrical isolation of the plate from the moving blades located at a short distance.
  • the aforementioned armature is fixed to the cheeks by means of pivot devices, so as to obtain an excellent mechanical operation of this member.
  • each movable conductive strip comprises a partially flattened cylindrical rod, the cylindrical part of this rod constituting a mobile contact.
  • This embodiment makes it possible to obtain both sufficient flexibility of the movable blades and good cooperation with the fixed contacts.
  • each movable conductive strip is folded into a U, the cylindrical ends of this strip constituting a double contact, which considerably improves the probability of good contact.
  • the relay comprises a plastic housing formed by a belt 1 and two cheeks 2 embedded on two of the faces of the housing by means of shoulders 3 ( Figures 3 and 4).
  • a coil 4 is overmolded in the belt 1, the overmolding being substantially parallelepipedic.
  • This overmolding includes a magnetic circuit 5 in L, a first branch 6 of which extends transversely to the coil and of which a second branch 7 extends parallel to the coil up to the end of the latter.
  • a core 8, coaxial with the coil, is fixed by one end to the branch 6 of the circuit 5 and it has at its other end a pole shoe 9.
  • the coil wire is connected to output connections 11 protruding under the relay and molded into the belt 1.
  • a movable frame 12 consists of a push arm 13 made of relatively flexible plastic material and a magnetic plate 14.
  • the push arm 13 has a bent end 15 and the plate 14 is overmolded with the arm 13 inside of this elbow.
  • the arm 13 In the vicinity of the elbow 15, the arm 13 has two lateral bearings 16 cooperating with pivots 17 formed on the cheeks 2 in the vicinity of the free end of the magnetic circuit 5 (Fig. 6 and 7). These bearings are positioned so that the axis they define coincides with the ideal theoretical axis of rotation 20 (fig. 1).
  • the elbow 15 has an angle slightly greater than 90 ° and the pivots 17 are located such that the arm 13 comes to extend along the branch 7 of the circuit 5, the plate 14 being spaced from the opening 9.
  • each of the cheeks 2 are overmolded two conductive bars 18, 19 arched inside the overmolding to come to open inside the housing perpendicular to the cheek and constitute fixed contacts 21, 22 respectively.
  • the aforementioned terminals are in two parts corresponding to different metals, which does not change the principle of bending.
  • connection tabs 23, 24 The other end of the bars 18, 19 opens at the bottom of the relay, by the edge of the cheek 2, to form connection tabs 23, 24.
  • the bars 18, 19 have a double curvature in Z so that the tabs 23, 24 are aligned with the connections 11 of the coil.
  • the result of this double curvature is a fold 25 which forms a wedge to slightly distance the relay from a printed circuit board 26 on which it is fixed.
  • the folds therefore play the role of "washing pins" after welding (fig. 5).
  • a third conductive bar 27 has its two ends which exit in the same way as those of the previous bars.
  • On its end 28 inside the housing is welded a movable conductive strip 29 made from a partially flattened round wire.
  • the cylindrical part 31 of this blade is inserted between the contacts 21 and 22 suitably offset for this purpose.
  • the projecting parts 21 and 22 are curved (FIG. 4), their convexity being directed towards the blade 29.
  • the movable blade can be constituted by a round wire 129 curved in a U and flattened except at its ends 131a, 131b (FIG. 8). This duplication of contacts considerably improves the probability of a good contact.
  • connection tabs from the bars 18, 19, 27 are thinned as shown on the tab 32 ( Figure 4).
  • This arrangement makes it possible both to carry out the double bending in Z in a wide and resistant part of the conductive terminal, to provide a tab of small dimension which is easily inserted into a common orifice of a printed circuit board, and provide, along the length of the thinning, a greater spacing between the relay and the plate 26 than that formed by the fold 25.
  • the fixed rest contact 21 is positioned so that the movable contact 31 comes to bear on it in the rest position of the relay (FIG. 1), that is to say when the magnetic plate 14 is not stressed.
  • the wafer 14 When the coil 4 is excited, the wafer 14 is attracted by the opening 9 and the frame 12 pivots around its lateral pivots. The push-arm 13 then lifts the blade 29, so that the movable contact 31 comes to bear on the fixed working contact 22.
  • the angular travel of the armature 12 is provided slightly greater than what would be necessary, so as to obtain good contact in the working position, the excess travel being absorbed by the elasticity of the blade 29 and of the pusher arm 13.
  • a first assembly comprises the belt 1, the coil 4 with its connections 11, and the magnetic circuit 5 with the core 8.
  • a second assembly comprises the frame 12, consisting of the push-arm 13 molded onto the wafer 14.
  • the manufacture of this part by overmolding avoids having to bend a relatively fragile metal part.
  • a third set consists of one (or two) cheek (s) 2 in which the conductive bars are molded.
  • the cheeks 2 are set in according to the arrows F (FIG. 3), then they are welded by a known method.
  • legs 23, 24 and 32 are folded in Z as indicated above, so as to put them at the same pitch as the connections 11 of the coil, for example at a pitch of 2.54 mm.
  • the relay obtained is perfectly waterproof and lends itself very well to automated manufacturing.

Landscapes

  • Electromagnetism (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnets (AREA)
  • Telephone Set Structure (AREA)
  • Cable Accessories (AREA)
  • Glass Compositions (AREA)
  • Casings For Electric Apparatus (AREA)
  • Transmitters (AREA)
  • Details Of Aerials (AREA)
  • Control Of Combustion (AREA)
  • Magnetic Treatment Devices (AREA)
  • Burglar Alarm Systems (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Valve Device For Special Equipments (AREA)
EP79401021A 1978-12-15 1979-12-14 Relais électromagnétique étanche Expired EP0012696B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79401021T ATE1260T1 (de) 1978-12-15 1979-12-14 Wasserdichtes elektromagnetisches relais.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7836378 1978-12-15
FR7836378A FR2444335A1 (fr) 1978-12-15 1978-12-15 Relais electro-magnetique etanche de tres petites dimensions

Publications (2)

Publication Number Publication Date
EP0012696A1 EP0012696A1 (fr) 1980-06-25
EP0012696B1 true EP0012696B1 (fr) 1982-06-23

Family

ID=9216535

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79401021A Expired EP0012696B1 (fr) 1978-12-15 1979-12-14 Relais électromagnétique étanche

Country Status (14)

Country Link
US (1) US4321569A (it)
EP (1) EP0012696B1 (it)
JP (1) JPS5583119A (it)
AT (1) ATE1260T1 (it)
BE (1) BE880255A (it)
CA (1) CA1139342A (it)
CH (1) CH634951A5 (it)
DE (2) DE7935129U1 (it)
DK (1) DK534379A (it)
ES (1) ES486896A1 (it)
FR (1) FR2444335A1 (it)
GB (1) GB2040578B (it)
IT (1) IT1120213B (it)
PT (1) PT70546A (it)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5678784A (en) * 1979-11-29 1981-06-27 Mitsubishi Electric Corp Smalllsized elevator device and its installing method
EP0058727B1 (en) * 1980-09-01 1988-07-27 Fujitsu Limited Electromagnetic relay and method of manufacturing the same
JPS57118927A (en) * 1981-01-09 1982-07-24 Nissan Motor Co Ltd Four-wheel drive car
JPS57118928A (en) * 1981-01-09 1982-07-24 Nissan Motor Co Ltd Four-wheel drive car
GB2106716B (en) * 1981-09-22 1985-12-11 Standard Telephones Cables Ltd Electromagnetic relay
JPS5863523A (ja) * 1981-10-12 1983-04-15 Nissan Motor Co Ltd 四輪駆動車
DE3202580C2 (de) * 1982-01-27 1986-10-30 Siemens AG, 1000 Berlin und 8000 München Relais mit Brückenkontaktanordnung und Verfahren zu deren Herstellung
DE3210447A1 (de) * 1982-03-22 1983-09-29 Siemens AG, 1000 Berlin und 8000 München Aus formschluessig ineinandergreifenden teilen aufgebautes luftschuetz
DE3406832C2 (de) * 1983-02-28 1985-11-21 Matsushita Electric Works, Ltd., Kadoma, Osaka Klappankerrelais
GB2158020B (en) * 1984-04-14 1987-12-23 Honda Motor Co Ltd Four-wheel drive system for vehicle
DE8438436U1 (de) * 1984-04-18 1987-10-22 Hengstler Bauelemente GmbH, 7209 Wehingen Kleinstrelais
FR2622739B1 (fr) * 1987-11-03 1990-01-19 Serd Soc Et Realisa Disjonct Declencheur magnetique et procede de fabrication
EP0336445B1 (en) * 1988-04-07 1996-09-25 Omron Corporation Electromagnetic relay
DE4011402A1 (de) * 1990-04-09 1991-10-10 Siemens Ag Elektromagnetisches relais und verfahren zu dessen herstellung
EP1101233B1 (de) * 1998-07-27 2002-02-20 Siemens Aktiengesellschaft Schaltgerät mit einem gehäuseunterteil als baueinheit und zugehöriges fertigungsverfahren
US20170129353A1 (en) * 2015-11-05 2017-05-11 Nexans Power supply assembly intended to recharge electric batteries for electric motor vehicles

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB822652A (en) * 1957-03-01 1959-10-28 Telephone Mfg Co Ltd Improvements in or relating to electromagnetic relays
US3295078A (en) * 1964-12-16 1966-12-27 Guardian Electric Mfg Company Relay
GB1200321A (en) * 1967-01-16 1970-07-29 Lucas Industries Ltd Electromagnetic relays
US3611218A (en) * 1969-07-19 1971-10-05 Teizo Fujita Electromagnetic relay
DE2020150A1 (de) * 1970-04-24 1971-12-02 Gruner Kg Relais Fabrik Elektromagnetisches Kleinrelais
DE2213146C3 (de) * 1972-03-17 1982-10-14 Standard Elektrik Lorenz Ag, 7000 Stuttgart Relais
DE2454967C3 (de) * 1974-05-15 1981-12-24 Hans 8024 Deisenhofen Sauer Gepoltes elektromagnetisches Relais
GB1516541A (en) * 1974-12-13 1978-07-05 Sauer H Electromagnetic relays
JPS51121764A (en) * 1975-04-15 1976-10-25 Int Standard Electric Corp Miniaturized relay
DE2556610C3 (de) * 1975-12-16 1985-11-21 Sauer, Hans, 8024 Deisenhofen Aus duroplastischem und thermoplastischem Isolierstoff bestehender Grundkörper für hermetisch abdichtbare Relais
DE2723430C2 (de) * 1977-05-24 1984-04-26 Siemens AG, 1000 Berlin und 8000 München Elektromagnetisches Relais

Also Published As

Publication number Publication date
US4321569A (en) 1982-03-23
CH634951A5 (fr) 1983-02-28
EP0012696A1 (fr) 1980-06-25
FR2444335B1 (it) 1981-08-14
GB2040578A (en) 1980-08-28
DK534379A (da) 1980-06-16
DE7935129U1 (de) 1982-07-15
DE2950199A1 (de) 1980-06-26
BE880255A (fr) 1980-03-17
PT70546A (fr) 1980-01-01
IT7951068A0 (it) 1979-12-12
CA1139342A (en) 1983-01-11
ATE1260T1 (de) 1982-07-15
FR2444335A1 (fr) 1980-07-11
DE2950199C2 (de) 1986-08-07
IT1120213B (it) 1986-03-19
GB2040578B (en) 1983-04-13
JPS5583119A (en) 1980-06-23
ES486896A1 (es) 1980-06-16

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