EP0117451B1 - Elektromagnetisches Relais - Google Patents

Elektromagnetisches Relais Download PDF

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Publication number
EP0117451B1
EP0117451B1 EP19840100961 EP84100961A EP0117451B1 EP 0117451 B1 EP0117451 B1 EP 0117451B1 EP 19840100961 EP19840100961 EP 19840100961 EP 84100961 A EP84100961 A EP 84100961A EP 0117451 B1 EP0117451 B1 EP 0117451B1
Authority
EP
European Patent Office
Prior art keywords
coil
relay
end portions
armature
frame member
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
EP19840100961
Other languages
English (en)
French (fr)
Other versions
EP0117451A1 (de
Inventor
Masanori Motoyama
Toyotaka Nishikawa
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.)
Cessione sds - Relais AG
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26350045&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0117451(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from JP1414483A external-priority patent/JPS59139529A/ja
Priority claimed from JP3233883A external-priority patent/JPS59158042A/ja
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to AT84100961T priority Critical patent/ATE20789T1/de
Publication of EP0117451A1 publication Critical patent/EP0117451A1/de
Application granted granted Critical
Publication of EP0117451B1 publication Critical patent/EP0117451B1/de
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
    • H01H50/16—Magnetic circuit arrangements
    • 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

Definitions

  • This invention relates to an electromagnetic relay of the type set forth in the first part of claim 1.
  • Such a relay is known from EP-A-0 040 778.
  • a rectangular frame-shaped armature assembly surrounds the relay coil assembly and is pivoted about a transverse axis defined by a pair of studs formed on the coil assembly.
  • the armature assembly is surrounded at its sides, ends and bottom by an insulating cover the bottom wall of which is provided with projections for actuating movable contact springs disposed below the coil and armature assemblies. While electrical isolation is achieved between the contact units and the coil, the disposition of the contact units below the remaining structural parts increases the overall height of the known relay, which is undesirable in certain applications, and it also renders the contact units prone to magnetical influence.
  • the relay shown in Figs. 1 to 7 comprises a casing 1 including a rectangular frame member 11 and upper and lower covers 9 and 10.
  • the lower rim of the, upper cover 9 and the upper rim of the lower cover 10 are each provided with a groove 19, and projecting ridges 13 fitting into the grooves 19 are provided on the top and bottom edges of the frame 11.
  • the contact surfaces between the frame 11 and each of the covers 9 and 10 is thus rather large, thus providing a large area over which sealant 53 can spread. If there is a difference in the contraction rates between the frame 11 and the covers 9 and 10, either of the side surfaces of the ridge 13 will be inevitably subjected to compression by the corresponding surface of the groove 19, thereby enhancing the sealing effect.
  • the frame 11 carries a pair of movable contact springs 6 and fixed contacts 8, the free end of each spring 6 having a contact portion 7 for cooperation with the respective fixed contact 8.
  • a plurality of terminals 14 is embedded in the frame 11, each terminal 14 having a connecting portion extending to the outside of the frame 11, and an inner connecting portion for engagement with a corresponding connecting portion of the coil and contacts. Two of these inner connecting portions 51 of two corresponding terminals 14 are shown in Fig. 1.
  • a coil assembly generally referenced by numeral 2 includes a coil 20 wound on a bobbin 22 and an iron core 21 extending through the bobbin and coil. End portions of the core 21 extend to the outside at both ends of the bobbin 22 and are each provided with a reccess 25.
  • the coil 20 is covered by a molded casing 23, and in applying this molded casing, the core 21 is held at the upper and lower surfaces of the core end portions, and molded casing 23 being formed integrally with a pair of studs 24 projecting laterally from both sides of the coil 20.
  • the coil assembly 2 is inserted into the frame 11 in fitting projections 12 formed at the inner surfaces of the frame 11 into the grooves 25 at the end faces of the core end portions. This structure improves the mechanical strength of the frame 11 by using the iron core 21 as a central portion thereof.
  • upper and lower armatures 3,4 of flat, rectangular frame-shape are provided.
  • a rectangular frame-like balancing spring 35 is mounted on the upper surface of the upper armature 3.
  • a pair of permanent magnets 5 is disposed at opposite sides on the upper surface of the lower armature 4, each magnet 5 being located between a pair of connecting pins 41 extending from the lower armature 4.
  • the lower surface of the upper armature 3 and the upper surface of the lower armature 4 are provided with integrally formed actuating noses 31 disposed opposite each other at an end of respective edges of the armatures.
  • Bearing members 30 are provided at the centers of both sides of both armatures 3, 4 at the inner edges of their frame- shapes so as to project upwardly from the lower armature 4 and downwardly from the upper armature 3.
  • the armatures 3, 4 are disposed so as to surround the coil assembly 2, which itself has been mounted in the frame 11.
  • the connecting pins 41 projecting upwardly from the lower armature 4 are fitted into bores 32 in the upper armature 3 thereby connecting the two armatures 3, 4 so that they are maintained parallel to each other.
  • the two pairs of upper and lower bearing members 30 provided at both armatures 3, 4 sandwich the pair of studs 24 extending from the molded casing 23 of the coil assembly 2, and the pair of permanent magnets 5 abut with their upper surfaces against the lower surface of the upper armature 3.
  • the thus completed armature assembly is supported for pivotal movement about the horizontal axis defined by the pair of studs 24.
  • the contact springs 6 are sandwiched between the opposing actuating noses 31 provided at the inner surfaces of the upper and lower armatures 3, 4. Also, the contact units formed by the contact springs 6 and the fixed contacts 8 are disposed within a shielded space S enclosed by the permanent magnets 5 and the upper and lower armatures 3, 4 as shown in Fig. 4. Thus, the coil 20 and the contact units are magnetically shielded from each other so that surges from the contact side (output side) are prevented from influencing the coil side (input side), in other words, the electronic circuit at the input side is protected against being damaged by surges occuring at the output side in Fig. 4, the molded portion 23 of the coil assembly 2 is not shown.
  • the casing is closed by placing the upper and lower covers 9, 10 on the respective edges of the frame 11 with sealant being disposed between the contacting surfaces of these casing portions as explained above.
  • the coil 20 has its wire ends connected to coil connecting portions 50 which project laterally from the ends of the core 21 extending from the coil.
  • coil connecting portions 50 which project laterally from the ends of the core 21 extending from the coil.
  • a double-coil has been assumed, so that there are four coil connecting portions 50.
  • these coil connecting portions 50 come into engagement with portions 51 which are the inner ends of terminals 14.
  • the engaging condition between these connecting portions 50 and 51 is shown in detail in Fig. 6.
  • ribs 52 are formed integrally with said upper and lower covers 9,10 so as to project inwardly with each rib 52 of the upper cover 9 facing a corresponding rib of the lower cover 10 at a position corresponding to the connecting portions 50 and 51.
  • Each fixed contact 8 is mounted on a plate 15 which has a pair of lugs 16 projecting from both sides at the central portion of the plate 15, as specifically shown in Fig. 2. These lugs 16 are embedded in a portion of the frame 11 and connected to a respective one of the terminals 14.
  • the fixed contact 8 is mounted at a front end of the plate 15 at a position in which it opposes the contact portion 7 provided on the contact spring 6, whereas the rear end of the plate 15 projects beyond the tip of the spring 6.
  • an adjusting tool 17 may be used to press on the rear end of the plate 15 from above or below to rotate the plate 15 about a horizontal axis defined by the lugs 16 thereby varying the vertical position of the fixed contact 8, as shown in Fig. 5.
  • the studs 24 supporting the armature assembly are integral with the molded caring 23 covering the coil 20 so that the iron core 21 penetrating through the coil 20 and the studs 24 are in a fixed position relatively to each other and form a common block to be conveniently assembled and inserted into the relay frame 11.
  • the relative position between the upper and lower surfaces provided at both ends of the iron core 21, which serve as the pole faces, and the end surfaces of the armatures 3 and 4 cooperating with these pole faces is thus reproduced with high accuracy, so that stable relay characteristics are obtained.
  • the pair of armatures 3, 4 and the contact units 6 are disposed at the lateral sides of the coil 20, so that the vertical dimension of the entire mechanism may be restricted to the height of the coil 20. Accordingly, a relay of thin structure is devised, without imposing restrictions on the coil design which may thus be wound with maximum efficiency,
  • the contacts 7, 8 are not affected by gases or moisture from the coil winding.
  • the modified embodiment of the invention shown in Fig. 8 differs from that described above in that the bearing members 30 are formed near the outer edges of only the lower armature 4 outside the permanent magnets 5.
  • the bearing members 30, the connecting pins 41 and the actuating noses 31 are integrally molded with the armatures 3, 4.
  • Bearing studs 24' of semi-circular cross-section extend between opposite inner surfaces of the frame member 11 and webs 46 integrally disposed within the frame member 11.
  • the studs 24' are supported at both of their ends so that they have high strength and dimensional stability.
  • the existence of the webs 46 and their connection to the respective inner surfaces of the frame member 11 through the studs 24' increase the strength and dimensional stability of the frame member 11.
  • the upper and lower armatures 3, 4 are pivotally supported by placing the frame-like balancing spring 35 at two sides thereof on the projections 12 molded to opposite inner sides of the frame member 11, and bringing the semi-circular cutouts in the pair of bearing members 30 on the lower armature 4 in contact with the semi-circular lower bearing surfaces of the studs 24'.
  • Figs. 9 and 10 show another way of connecting the permanent magnets 5 between the upper and lower armatures 3, 4, which structure may be employed in either of the relays according to Figs. 1 to 8.
  • the permanent magnets 5 serve as spacers defining the interval between the upper and lower armatures 3, 4 and employ iron alloy magnets of the alnico series (Fe-Ni-Co) or the Fe-Cr-Co series.
  • the mutually facing inner surfaces of the armatures 3, 4 are provided with sockets 36 of thermoplastic synthetic resin providing a wall for surrounding the mounting faces of the permanent magnets 5.
  • FIG. 11 and 12 differs from those described above in that the flat, rectangular frame-shaped upper and lower armatures 3, 4 are interconnected at two opposite ends by brackets 18 each of which has an integrally molded stud 24".
  • the studs 24" define a pivot axis for the armature assembly which extends along the axis of the coil 20.
  • the studs 24" are supported by bearing members (not shown) which may be provided at opposite inner walls of the frame member 11.
  • two permanent magnets 5 are disposed between the upper and lower armatures 3, 4 to magnetize them with opposite polarities. Both end portions of the iron core 21' extending from the coil 20 are bent perpendicularly to the coil axis to opposite sides.
  • Contact springs (now shown) driven by the armature assembly are disposed parallel to and along those sides of the armatures which are in contact with the permanent magnets 5.
  • the armatures are dimensioned so as to extend beyond the permanent magnets 5 and the contact springs are disposed between the armatures in a manner similar to that shown in Fig. 4.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)

Claims (12)

1. Elektromagnetisches Relais, umfassend
eine Spulenanordnung (2) mit einer Spule (20) und einem Kern (21), der die Spule durchsetzt und von der Spule herausragende Endabschnitte aufweist,
eine Ankeranordnung mit einem Paar aus einem oberen und einem unteren Anker (3, 4) einer die Spule (20) umgebenden Rahmenform mit den Endabschnitten des Kerns gegenüberliegenden Endabschnitten und mit mindestens einem zwischen dem oberen und dem unteren Anker angeordneten Dauermagnet (5), wobei die Ankeranordnung um eine von einem Paar von Zapfen (24) definierte Achse schwenkbar ist, und
mindestens eine Kontakteinheit (6,8) mit einem Festkontakt (8) und einer von der Ankeranordnung betätigten bewegbaren Kontaktfeder (6),
dadurch gekennzeichnet,
daß in der Draufsicht auf das Relais die Kontakteinheit (6, 8) seitlich von der Spulenanordnung (2) angeordnet ist, und
daß die bewegbare Kontaktfeder (6) innerhalb eines Raumes (S) angeordnet ist, der von dem oberen und dem unteren, über den Dauermagnet (5) hinausragenden Anker (3, 4) definiert ist und auf der von der Spulenanordnung (2) abgewandten Seite des Dauermagnets (5) liegt.
2. Relais nach Anspruch 1, wobei die Spulenanordnung (2) mit einem geformten Gehäuse (23) bedeckt ist, und wobei die beiden Zapfen (24) auf entgegengesetzten Seiten des geformten Gehäuses derart angeformt sind, daß die Schwenkachse der Ankeranordnung quer zur Spulenachse verläuft.
3. Relais nach Anspruch 1, wobei die beiden Zapfen (24') innerhalb eines Gehäuse-Rahmenelements (11) des Relais ausgebildet sind und die Spulenanordnung (2) so positionieren, daß die Schwenkachse der Ankeranordnung quer zur Spulenachse verläuft.
4. Relais nach Anspruch 3, wobei jeder Zapfen (24') zwischen einer inneren Wand des Rahmenelements (11) und einem mit diesem einstückig ausgebildeten Steg (46) verläuft.
5. Relais nach Anspruch 1, wobei die Zapfen (24") an den oberen und den unteren Anker (3, 4) miteinander verbindenden Trägern (18) derart vorgesehen sind, daß die Schwenkachse der Ankeranordnung längs der Spulenachse verläuft, wobei die Endabschnitte des Kerns so gebogen sind, daß sie quer zur Spulenachse verlaufen.
6. Relais nach einem der Ansprüche 1 bis 5, wobei der besagte mindestens eine Dauermagnet (5) an die Innenfläche des oberen und/oder unteren Ankers (3, 4) innerhalb einer aus Kunstharz bestehenden Sockelwandung (36) angeschweißt ist, die denjenigen Flächenabschnitt des Ankers umgibt, an den der Magnet angeschweißt ist.
7. Relais nach einem der Ansprüche 1 bis 6, wobei an den einander zugewandten Oberflächen des oberen und des unteren Ankers (3, 4) Nasenabschnitte (31) zur Betätigung der Kontaktfeder (6) ausgebildet sind.
8. Relais nach einem der Ansprüche 1 bis 4, wobei der obere und der untere Anker (3, 4) jeweils Einrichtungen (30) aufweisen, die miteinander ein Paar von Lagern zur Aufnahme der beiden Zapfen (24) bilden.
9. Relais nach einem der Ansprüche 1 bis 8, ferner umfassend ein Gehäuse (1) mit
einem Rahmenteil (11) zur Montage der Spulenanordnung (2) und der Kontakteinheit (6, 8) mit Anschlüssen (14), die mit der Spule und der Kontakteinheit verbunden sind und von dem Rahmenteil nach außen verlaufen, und
oberen und unteren Deckeln (9, 10) mit Randabschnitten, die in gegenüberliegende Kanten des Rahmenteils eingreifen, um die Spulenanordnung, die Ankeranordnung und die Kontakteinheit dichtend zu umschließen.
10. Relais nach Anspruch 9, wobei von jedem ineinandergreifenden 'Paar aus Deckel-Randabschnitt und Rahmenkante das eine Teil einen Vorsprung (13) und das andere eine den Vorsprung aufnehmende Nut (19) aufweist, und wobei zwischen Nut und Vorsprung ein Dichtungsmittel (53) eingefügt ist.
11. Relais nach Anspruch 9 oder 10, wobei die Spule (20) mindestens zwei Endabschnitte (50) aufweist und mindestens zwei der Anschlüsse (14) innere Endabschnitte (51) haben, die mit den Endabschnitten der Spule verbunden sind, und wobei an den oberen und den unteren Deckel (9, 10) nahe dem Rahmenteil (11) Rippen (52) angeformt sind, die in das Gehäuse (1) nach innen ragen und nahe den Außenflächen der miteinander verbundenen Spulenund Anschluß-Endabschnitte (50, 51) liegen.
12. Relais nach einem der Ansprüche 9 bis 11, wobei die Endabschnitte des Kerns Aussparungen (25) aufweisen und an das Rahmenteil (11) innere Vorsprünge (12) angeformt sind, die in die Aussparungen eingreifen.
EP19840100961 1983-01-31 1984-01-31 Elektromagnetisches Relais Expired EP0117451B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84100961T ATE20789T1 (de) 1983-01-31 1984-01-31 Elektromagnetisches relais.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP14144/83 1983-01-31
JP1414483A JPS59139529A (ja) 1983-01-31 1983-01-31 バランスアマチユア型リレ−
JP3233883A JPS59158042A (ja) 1983-02-28 1983-02-28 有極リレ−
JP32338/83 1983-02-28

Publications (2)

Publication Number Publication Date
EP0117451A1 EP0117451A1 (de) 1984-09-05
EP0117451B1 true EP0117451B1 (de) 1986-07-16

Family

ID=26350045

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840100961 Expired EP0117451B1 (de) 1983-01-31 1984-01-31 Elektromagnetisches Relais

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EP (1) EP0117451B1 (de)
DE (1) DE3460282D1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61281427A (ja) * 1985-06-06 1986-12-11 オムロン株式会社 電磁継電器
DE3637115A1 (de) * 1986-10-31 1988-05-05 Standard Elektrik Lorenz Ag Gepoltes flachrelais
DE19705508C1 (de) * 1997-02-13 1998-08-20 Siemens Ag Elektromagnetisches Relais

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5124753A (en) * 1974-08-22 1976-02-28 Matsushita Electric Works Ltd Denjikeidenki
FR2314576A1 (fr) * 1975-06-11 1977-01-07 Matsushita Electric Works Ltd Relais a lame
JPS5537759A (en) * 1978-09-08 1980-03-15 Omron Tateisi Electronics Co Electromagnetic relay
DE3166277D1 (en) * 1980-05-16 1984-10-31 Omron Tateisi Electronics Co Polarized electromagnetic device

Also Published As

Publication number Publication date
EP0117451A1 (de) 1984-09-05
DE3460282D1 (en) 1986-08-21

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