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EP0118040B1 - Relais électromagnétique avec armature pivotante montée dans le corps de bobine - Google Patents

Relais électromagnétique avec armature pivotante montée dans le corps de bobine Download PDF

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Publication number
EP0118040B1
EP0118040B1 EP84101122A EP84101122A EP0118040B1 EP 0118040 B1 EP0118040 B1 EP 0118040B1 EP 84101122 A EP84101122 A EP 84101122A EP 84101122 A EP84101122 A EP 84101122A EP 0118040 B1 EP0118040 B1 EP 0118040B1
Authority
EP
European Patent Office
Prior art keywords
armature
bearing
relay
bearing surfaces
bobbin
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
EP84101122A
Other languages
German (de)
English (en)
Other versions
EP0118040A1 (fr
Inventor
Hans Sauer
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to AT84101122T priority Critical patent/ATE21468T1/de
Publication of EP0118040A1 publication Critical patent/EP0118040A1/fr
Application granted granted Critical
Publication of EP0118040B1 publication Critical patent/EP0118040B1/fr
Expired 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
    • H01H51/2272—Polarised relays comprising rockable armature, rocking movement around central axis parallel to the main plane of the armature
    • H01H51/2281—Contacts rigidly combined with armature
    • 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

Definitions

  • the invention relates to an electromagnetic relay of the type specified in the preamble of claim 1.
  • Such a relay is known from DE-B-2 334 838.
  • bearing surfaces are formed in the inside of the coil body, in which the armature is mounted on eccentric disks by means of pins protruding from its side surfaces.
  • the eccentric discs serve to avoid air gaps, which can occur at one of the two ends in the end positions of the armature mounted in the center.
  • the eccentric disks involved in the mounting of the armature relative to the coil body represent additional components which impose additional tolerances in the mounting and thus impair the switching accuracy of the relay.
  • Another relay known from DE-C-2 461 884 has a one-piece coil body designed as a protective tube with an armature arranged therein.
  • the armature is live and acts as a bridge contact with two fixed contacts in each of the two coil body flanges. When shifting, it rotates around its center.
  • a cylindrical pin is provided in the center for its storage, which rests in the protective tube with tolerance-compensating play. This type of storage prevents accidental contact of the armature with the opposite fixed contact. It is also easy to manufacture, although it must be accepted that the anchor remains displaceable in its longitudinal direction. The relay is therefore less suitable for applications in which shock or vibration occurs or precise response values are required.
  • the invention has for its object to provide an armature bearing in a relay of the type mentioned, which is afflicted with the smallest possible tolerances, which simultaneously enables the two armature ends to abut their opposite poles or contact or actuating pieces at the same time, and prevents longitudinal displacement of the armature.
  • a shape-specific, reproducible bearing within narrow tolerances is obtained, which ensures the desired g l - uniform contact of the armature ends with opposite poles or fixed contacts.
  • the trough-shaped counter bearing surfaces which are preferably formed in two mutually opposite walls within the coil body, are produced, for example, during the injection process of the coil body by a correspondingly shaped insert or stamp.
  • the depth of the cylindrical or spherical counter bearing surfaces is chosen so that the elasticity of the material of the side walls of the coil body allows the insertion or stamp to be easily removed from the mold.
  • the embodiment of the invention according to claim 2 results in a particularly secure anchor bearing, since it can no longer move laterally.
  • the additional bearing surfaces provided on the side walls of the armature can then be dome-shaped, in which case they practically only touch the wall of the bobbin bore and do not significantly increase the bearing friction.
  • the greatest possible mechanical stability is achieved by symmetrical formation of the armature, which performs a pure rotary movement about the relevant axis of gravity.
  • the further preferred embodiment of the invention according to claim 4 ensures that the armature is secured in both longitudinal directions without the need for engaging portions in the coil body. This enables the bobbin to be removed from the mold even in the case of relatively inelastic material, for example by inserting two inserts into the bobbin from opposite end faces which meet in the middle of the bobbin.
  • the use of thermosetting material thus enabled results in a relay that can also be used at higher ambient temperatures and is more resilient.
  • the bearing element provided in the development according to claim 5 can be integrally formed on the armature by partial sheathing or can accommodate the armature as a separate insulating part.
  • the armature is constructed from two parts according to the embodiment according to claim 6, there is the possibility of creating a multi-contact relay in which sufficient creepage distances can be realized between the two armature parts by appropriate dimensioning of the bearing element.
  • the development of the invention according to claim 7 is advantageous in order to ensure sufficient synchronism in the movement of the two anchor parts.
  • the measure of claim 11 has the effect that the coil winding does not exert any pressure on the bearing which would otherwise occur as a result of heating.
  • an armature 1 is held in a coil former 2 made of plastic in that bearing catches 1 a and 1 b, which are spherical in shape and extend away from the anchor 1, engage in corresponding bearing troughs 2a and 2b which engage in the coil former 2 are molded.
  • the armature 1 which has at its free ends 11 and 11 'contact surfaces 1c, 1d and 1c', 1d ', is mounted so as to be pivotable about an axis x (FIG. 2), so that the contact surfaces interact with counter-contacts (not shown) can.
  • the coil body 2 is rectangular in cross section and has in its central region a cavity 12 which extends from the end face 13 of the coil body 2 through it to the opposite end face 13 'and into which the armature 1 is inserted.
  • the anchor cross section in all the illustrated embodiments is, but not necessarily, rectangular and is delimited by left and right side walls 17, 18 and by lower and upper walls 9.
  • the walls 17, 18, 9 of the armature 1 face the inner sides of the left and right side walls 2e, 2k and the upper and lower side walls 2f of the coil body 2.
  • the walls 2e, 2k and 2f enclose the cavity 12 in the coil former, and their ends are designed as coil former flanges defining the end faces 13 and 13 '.
  • One rib 2c, 2d extends from the upper and the lower wall 2f into the cavity 12.
  • the rib 2c is narrow relative to the total width of the upper wall 2f.
  • the outer sides of the upper and lower walls 2f have trough-shaped depressions 2g, the wall thickness of the upper and lower walls 2f tapering towards the central region where the ribs 2d and 2c are formed.
  • the formation of the recesses 2g ensures that there is still a certain elasticity of the walls 2f if a relatively hard-elastic plastic is chosen for the coil former.
  • This elasticity is necessary for the insertion of the armature 1 into the cavity 12, that is to say the insertion of the bearing catches 1a, 1b into the bearing troughs 2a and 2b.
  • the height of the ribs 2c and 2d along the cavity 12 is not uniform, but tapers from the center thereof to the end walls 13. The ribs 2c, 2d can run down to the normal wall dimension before the end walls are reached.
  • the arms 16 and 16 'of the armature 1 also taper towards their ends.
  • the central region 15 has the spherical bearing catches 1a and 1b, which in this embodiment extend over the entire width b of the armature 1 from the left side wall 17 to the right side wall 18.
  • These bearing catches 1 a and 1 b are easy to manufacture and robust as elevations extending cylindrically with respect to the pivot axis x, so that there is no danger of breaking off as in the case of anchor pins.
  • the cylinder axis coincides with the swivel axis x.
  • the bearing troughs 2a have a complementary, partially cylindrical design. 2b on.
  • Both the curvatures of the bearing catches 1a and 1b and the indentations 2a and 2b are shape-bound and can therefore be manufactured precisely.
  • the walls 2f must yield in a correspondingly resilient manner so that the die or the insert which causes the indentations 2a and 2b can be removed in the production of the coil former 2 without destruction.
  • the ribs 2c and 2d are not only relatively narrow but also arranged in the center where the suspension is at its greatest.
  • the ribs 2c and 2d arranged in the center allow the limited degree of freedom in the y-tilt direction, as a result of which tolerance compensation is achieved during contacting of the armature ends 11, 11 'with the mating contacts, not shown.
  • the relay coil 5 Since the relay coil 5 is wound with different mechanical tension and temperature fluctuations also occur, care must be taken to ensure that the variable pressure is not transferred to the bearing devices formed from bearing catches 1a and 1b and bearing troughs 2a and 2b. For this reason, the outer sides of the bearing-supporting walls 2f of the coil body 2 are exposed through the recesses 2g with respect to the coil winding 5.
  • FIG. 3 and FIG. 4 show another embodiment of a relay according to the invention, which is constructed in a centrally symmetrical manner, the reference symbols also applying to the unmarked, respectively symmetrically arranged parts.
  • This embodiment shows a bistable polarized relay with at least one permanent magnet 6, which preferably consists of an electrically insulating ferrite that can be activated to form a getter, and on which pole shoes 3 and 3 ′ rest.
  • the armature 1 has two armature arms 16a, 16a ', which do not appear to be assembled symmetrically, but somewhat shifted transversely to the longitudinal axis of the armature.
  • bearing shoulders 19a, 19b form as bearing surfaces on the bottom and top of the armature.
  • Opposing the bearing shoulders 19a, 19b are complementarily shaped counter-bearing shoulders 20a, 20b in the ribs 2'c, 2'd.
  • the ribs 2'c, 2'd are tapered, similar to the ribs 2c, 2d of FIG. 1, from the central region of the coil body to the ends thereof, but in the embodiment according to FIG.
  • the web 2'd is formed on the right-hand side, so that the armature arm 16a on the left-hand side is offset by its lower surface parallel to the axis of the cavity 12 from the counter-bearing shoulder 20b to the free end 11 of the armature arm 16a extends where the contact surface 1c cooperates with the resilient mating contact 4 '.
  • the rib 2'c is formed on the upper wall 2'f with the counter-bearing shoulder 20a, which cooperates with the bearing shoulder 19a of the armature 1, the upper surface of the armature arm 16'a being parallel in the position shown in FIG. 3 leads to the axis of the cavity 12 to the armature end 11 ', where the contact surface 1'c cooperates with the resilient mating contact 4.
  • the bearing shoulders 19a and 19b are of partially cylindrical shape, the cylinder axis coinciding with the pivot axis x.
  • the arc length of the cylinder segment is so large that the anchor, even when it is in its central position during the switching process between two contacts, cannot lift off the counter-bearing shoulders in the event of a vibration, but is securely supported there. This means that the armature 1 also engages in the counter bearing shoulders during assembly with its bearing shoulders acting as bearing catches.
  • the armature arms 16a, 16'a each extend into a contact space 21 which is enclosed by opposing pole pieces 3, 3 'and a permanent magnet 6.
  • the resilient mating contacts 4 and 4' are next to each other
  • the cavity 12 is closed, which can be filled with a protective gas if necessary.
  • Support walls 22 extend from the end faces 13, 13 ', which surround the permanent magnet 6 and the pole shoes 3, 3' and the contacts 4, 4 'as protective walls, and also support a relay housing 23 on the end face, the upper part of the housing 23 is supported by the flanges of the bobbin 2.
  • the support walls 22 are integrally formed on the coil body 2 in the embodiment of FIG. 3.
  • FIG. 5 to 7 show another embodiment of a relay according to the invention, each with two circuits and thus two coupled armatures 1 ', 1 ".
  • these are made of an insulating material existing bearing part 7 articulated
  • the bearing point is designed according to the preceding examples.
  • pins 7a, 7b and 7c are formed on the bearing part 7 and extend into corresponding recesses 1'a, 1'b and 1'c in the two anchors 1 ', 1' '.
  • the two anchors 1 ', 1 " are designed in accordance with the outer part of the bearing part 7, so that the two anchors 1', 1" and the bearing part 7 in a composite form look like a homogeneous anchor.
  • bearing surfaces 24 are formed which, in conjunction with the inner surfaces of the coil body walls 2'e, 2'h, compress the armatures 1', 1" and the bearing part 7. Such lateral tilting bearing surfaces are particularly useful in the case of composite anchors.
  • these counter bearing surfaces can be designed in the form of correspondingly shaped troughs and also form a corresponding latching connection for the tilting bearings, as is provided for the pivot bearings.
  • recesses 2h in the upper and lower walls 2'f of the coil former 2 are formed on the outside of the coil towards the winding, which are rectangular here in cross section, in order to increase the elasticity and to avoid pressure from the winding are trained.
  • a relay which can also close two circuits in each switching position.
  • 9 and 11 show, the two partial anchors 10, 10 'laterally with a bearing element 7 consisting of two parts 7', 7 "via molded pins 7'a, 7'b, which in corresponding bores 10a, 10a
  • the bearing part 7 ' has opposite curvatures 7'c which act as bearing catches, are connected by means of a web 7'd and in the indentations in the form of bearing troughs 2a in the interior of the coil body 2 the entire armature 10, 10, store.
  • This type of bridge contact has the advantage over the previously described ones that the contact bridge runs perpendicular to the magnetic fluxes, so that a magnetic blow-out effect occurs on an arc occurring during the switching process.
  • the bearing parts 7 ', 7 " are assembled with inclined surfaces 7'e (FIG. 11) between them, so that the armature essentially consists of four parts is formed, namely the left partial anchor 10, the right partial anchor 10 'and the two bearing parts 7', 7 ", which the anchors clamped together by the pins 7'a, 7'b.
  • each bearing part 7', 7" can also have bearing surfaces 24 ', as in the embodiment according to FIG. 6, so that at the same time with a tilting bearing the two anchors 10, 10 'are firmly clamped by the pressure acting on the bearing surfaces 24' from the side walls acting as a counter bearing, which pressure can be reduced to zero, depending on the design and the winding.
  • the parts 7 ', 7 "of the bearing element 7 can be made of a different material than the anchor itself, so that the anchor is extremely simple to manufacture and almost all functional shapes can be concentrated on the bearing element 7.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Jib Cranes (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Claims (11)

1. Relais électromagnétique, dont le corps de bobine (2) comprend une cavité (12) s'étendant le long de son axe longitudinal (y), dans laquelle est monté un induit (1) pouvant pivoter autour d'un axe (x) transversal à son axe longitudinal (y) au moyen de premières surfaces d'appui (2a, 2b) de forme courbe, en regard l'une de l'autre et constituées sur deux parois de la cavité (12) du corps de bobine, caractérisé en ce que sont constituées sur deux surfaces latérales en regard de l'induit (1) deux secondes surfaces d'appui (1a, 1 b) correspondant aux premières surfaces d'appui (2a, 2b) formées d'un seul tenant avec le corps de bobine (2), qui forment directement avec les premières surfaces d'appui (2a, 2b) la monture de l'induit, et en ce que les parois (2g) du corps de bobine qui comprennent les premières surfaces d'appui (2a, 2b; 20a, 20b) sont constituées de façon élastique de manière que l'induit (1) puisse être introduit dans la cavité (12) et enclenché par ses surfaces d'appui (1a, 1b) entre les surfaces d'appui (2a, 2b) du corps de bobine (2).
2. Relais selon la revendication 1, caractérisé en ce que l'induit (1) comprend des troisièmes surfaces d'appui (24) qui supportent, avec des quatrièmes surfaces d'appui constituées par des parois latérales en regard (2e, 2k) de la cavité (12), l'induit (1) en position basculée autour de l'axe longitudinal (y) du corps de bobine (2).
3. Relais selon la revendication 1 ou 2, caractérisé en ce que le centre de courbure des premières et des secondes surfaces d'appui (2a, 2b; 1a, 1b) est situé sur l'axe de pivotement (x).
4. Relais selon l'une des revendications 1 à 3, caractérisé en ce que les premières et secondes surfaces d'appui sont constituées sous forme d'épaulements d'appui (20a, 20b, 19a, 19b), qui sont disposés face à face de manière à limiter un déplacement de l'induit (1) dans les deux directions le long de l'axe longitudinal (y) du corps de bobine.
5. Relais selon l'une des revendications 1 à 4, caractérisé en ce que les secondes surfaces d'appui (l'a, 1'b; 7c, 7'c) sont prévues sur un élément d'appui (7; 7', 7") introduit dans l'induit (1 ', 1 "; 10, 10').
6. Relais selon la revendication 5, caractérisé en ce que l'induit et l'élément d'appui sont constitués chacun de deux parties (10, 10'; 7', 7"), et chaque partie de l'élément d'appui comprend des dispositifs de retenue (7'a, 7'b) pour recevoir avec jeu la partie d'induit correspondante.
7. Relais selon la revendication 5, caractérisé en ce que l'induit est constitué en deux parties (1', 1 ") disposées sur les côtés opposés de l'élément d'appui (7).
8. Relais selon l'une des revendications 1 à 7, caractérisé en ce que les premières surfaces d'appui (2a, 2b; 20a, 20b) sont constituées par des nervures (2c, 2d) qui font saillie vers l'intérieur à partir des parois opposées (2f) de la cavité (12).
9. Relais selon la revendication 8, caractérisé en ce que les nervures (2c, 2d) sont disposées en direction longitudinale de la cavité (12) dans le plan formé par le mouvement de pivotement de l'induit (1).
10. Relais selon la revendication 9, caractérisé en ce que les nervures (2c, 2d) possèdent une hauteur allant en diminuant à partir du centre du corps de bobine (2) vers ses extrémités.
11. Relais selon l'une des revendications 1 à 10, caractérisé en ce que le corps de bobine (2) comprend des renfoncements (2g) sur les surfaces extérieures des parois (2f) supportant la bobine (5).
EP84101122A 1983-02-03 1984-02-03 Relais électromagnétique avec armature pivotante montée dans le corps de bobine Expired EP0118040B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84101122T ATE21468T1 (de) 1983-02-03 1984-02-03 Elektromagnetisches relais mit im spulenkoerper schwenkbar gelagertem anker.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3303666 1983-02-03
DE19833303666 DE3303666A1 (de) 1983-02-03 1983-02-03 Relais mit wenigstens einem, innerhalb des spulenkoerpers schwenkbeweglich gelagerten anker

Publications (2)

Publication Number Publication Date
EP0118040A1 EP0118040A1 (fr) 1984-09-12
EP0118040B1 true EP0118040B1 (fr) 1986-08-13

Family

ID=6189962

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84101122A Expired EP0118040B1 (fr) 1983-02-03 1984-02-03 Relais électromagnétique avec armature pivotante montée dans le corps de bobine

Country Status (5)

Country Link
US (1) US4543550A (fr)
EP (1) EP0118040B1 (fr)
AT (1) ATE21468T1 (fr)
CA (1) CA1202345A (fr)
DE (2) DE3303666A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4668928A (en) * 1986-06-23 1987-05-26 Tektronix, Inc. Bi-stable switch with pivoted armature
DE3637115A1 (de) * 1986-10-31 1988-05-05 Standard Elektrik Lorenz Ag Gepoltes flachrelais
AT408928B (de) * 1990-10-12 2002-04-25 Tyco Electronics Austria Gmbh Relais
DE19702130C1 (de) * 1997-01-22 1998-04-23 Siemens Ag Gesinterter Anker
US8174343B2 (en) * 2006-09-24 2012-05-08 Magvention (Suzhou) Ltd. Electromechanical relay and method of making same
JP5115236B2 (ja) * 2008-02-29 2013-01-09 オムロン株式会社 電磁石装置
EP3123490B9 (fr) * 2014-11-10 2018-09-26 ZETTLER electronics GmbH Relais présentant deux trajets de courant montés en parallèle

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3178532A (en) * 1962-12-05 1965-04-13 Connecticut Valley Entpr Inc Electromagnetic relay with contact supported armature
FR1567309A (fr) * 1967-04-07 1969-05-16
DE1639301A1 (de) * 1968-02-10 1971-03-04 Hartmann & Braun Ag Flachrelais mit E-foermigem Kern und U-foermigem Anker
DE2318812B1 (de) * 1973-04-13 1974-01-10 Hans Sauer Elektromagnetisches Relais
DE2334838C2 (de) * 1973-07-09 1975-02-20 Elmeg-Elektro-Mechanik Gmbh, 3150 Peine Elektromagnetisches Relais mit Drehanker und Verfahren zum Justieren der Ankerachse
DE2454967C3 (de) * 1974-05-15 1981-12-24 Hans 8024 Deisenhofen Sauer Gepoltes elektromagnetisches Relais
DE2461884C3 (de) * 1974-12-30 1982-04-15 Sds-Elektro Gmbh, 8024 Deisenhofen Elektromagnetisches Schaltgerät
US4074100A (en) * 1976-06-14 1978-02-14 Cutler-Hammer, Inc. Elastic toggle switch lever mounting
DE2632126C2 (de) * 1976-07-16 1978-05-24 Siemens Ag, 1000 Berlin Und 8000 Muenchen Polarisiertes Miniaturrelais
DE2633734C2 (de) * 1976-07-27 1982-10-28 Siemens AG, 1000 Berlin und 8000 München Elektromagnetisches Miniaturrelais
DE2749468A1 (de) * 1976-11-15 1978-05-18 Iskra Elektromagnetisches umschlagrelais
DE2902885C2 (de) * 1979-01-25 1983-03-24 Sds-Elektro Gmbh, 8024 Deisenhofen Kontaktfederanordnung für elektromagnetische Drehankerrelais
US4323945A (en) * 1979-01-25 1982-04-06 Matsushita Electric Works, Ltd. Polarized electromagnetic relay

Also Published As

Publication number Publication date
DE3303666A1 (de) 1984-08-09
CA1202345A (fr) 1986-03-25
US4543550A (en) 1985-09-24
ATE21468T1 (de) 1986-08-15
EP0118040A1 (fr) 1984-09-12
DE3460440D1 (en) 1986-09-18

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