EP0077017A2 - Relais électromagnétique polarisé - Google Patents

Relais électromagnétique polarisé Download PDF

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Publication number
EP0077017A2
EP0077017A2 EP82109237A EP82109237A EP0077017A2 EP 0077017 A2 EP0077017 A2 EP 0077017A2 EP 82109237 A EP82109237 A EP 82109237A EP 82109237 A EP82109237 A EP 82109237A EP 0077017 A2 EP0077017 A2 EP 0077017A2
Authority
EP
European Patent Office
Prior art keywords
armature
relay according
yokes
base body
coil
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
EP82109237A
Other languages
German (de)
English (en)
Other versions
EP0077017B1 (fr
EP0077017A3 (en
Inventor
Ulrich Ing. Grad. Kobler
Eberhard Ing. Grad. Wanka
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP0077017A2 publication Critical patent/EP0077017A2/fr
Publication of EP0077017A3 publication Critical patent/EP0077017A3/de
Application granted granted Critical
Publication of EP0077017B1 publication Critical patent/EP0077017B1/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
    • H01H51/2263—Polarised relays comprising rotatable armature, rotating around central axis perpendicular to the main plane of the armature

Definitions

  • the invention relates to a polarized electromagnetic relay with two U-shaped, parallel spaced yokes, which enclose at least one permanent magnet between them and whose central sections together form the core of a coil, one formed by an elongated ferromagnetic sheet, in its
  • the center of gravity of the rotatably mounted anchor lies with its free ends between the pair of parallel legs of the yokes and forms a working air gap with each of these yoke legs.
  • a polarized magnet system of this type is known, which serves as a drive system for relays, alarm clocks and the like (DE-PS 966 845).
  • a relay with several contacts which can be actuated by the armature.
  • a relay is also known, in which the actuation of several contacts and a hermetic separation between the coil space on the one hand and the contact space arranged above the coil on the other hand is provided in a compact design.
  • this known relay only a single U-shaped yoke runs through the coil, which is guided into the contact space with two legs.
  • a polarized relay can only be created there by a permanent magnet arranged in the contact space, this permanent magnet ent is neither coupled to the yoke leg ends in an elongated design or carried by a so-called H-anchor.
  • the H-armature is relatively large and heavy due to its two ferromagnetic sheet metal parts and one or more permanent magnets arranged between them, so that a relatively large mass must be moved when switching.
  • the contact space is narrowed in any case by the permanent magnet or magnets.
  • the object of the present invention is to develop a relay of the type mentioned at the outset such that, in the most compact possible design, a plurality of contact elements can be actuated by an armature with the smallest possible mass, the contact space being hermetically sealed in a simple manner with respect to the coil winding and to the outside atmosphere.
  • this object is achieved in that the permanent magnet is arranged between the central sections of the two yokes and, together with them, is encased with insulating material in such a way that the armature, which is also U-shaped in the opposite direction to the yokes, has the coil winding on its side legs End faces overlap between the free legs of the yokes, the armature being mounted on a base body which, in the form of an inverted trough, covers the coil winding, is provided with openings in the area of the yoke legs and carries contact connecting elements anchored to the side of the coil.
  • the permanent magnet is together with the yokes with insulating material encased, for example encapsulated with plastic, and this encasement is then provided with the coil winding.
  • insulating material encased, for example encapsulated with plastic
  • this encasement is then provided with the coil winding.
  • the permanent magnet can extend within the coil between the two yokes over its entire length, whereby large coupling surfaces between the permanent magnet and the respective yoke are obtained.
  • the properties of ferrite magnets can be exploited well here.
  • the extension of the permanent magnet in its polarization direction between the two yokes is expediently chosen such that it corresponds exactly to the sum between the armature thickness and armature stroke. This makes it possible to use particularly simple flat sheet metal parts for the yokes and the anchor.
  • a bistable or a monostable switching characteristic of the relay can be set.
  • the area totals of the diagonally opposing pole faces of the armature and the yoke legs become the same chosen large.
  • a monostable switching characteristic is obtained if the surface sums of the diagonally opposing pole faces are of different sizes.
  • the first requirement is that the contact spring set acts symmetrically on the armature in both cases. Even with an asymmetrically acting spring set, the force-displacement curve of the magnet system can be adjusted by varying the pole faces. To support this adjustment, it is also expedient that in the monostable embodiment, separating plates are attached to two diagonally opposite pole faces of the yoke or the anchor will.
  • the anchor is expediently provided in its central region with a jacket made of insulating material, so that it can be mounted on a bearing journal of the base body by means of a bush molded into this jacket.
  • the middle part of the armature is expediently provided with a bend which wraps around the bushing on one side.
  • the armature can also be mounted by means of a bearing spring arranged on the base body, which supports the armature via spring tabs which are bent laterally be, whereby a tolerance compensation is made possible during assembly through the elongated holes.
  • the coil former expediently has flanges with sealing surfaces lying against the base body in the area of the yoke legs.
  • the base body also expediently rests with its openings on the yoke legs and forms with its outer edge sealing surfaces against a housing cap placed over the entire relay.
  • the base body on the one hand and the housing cap on the other hand can be connected by means of interlocking locking elements.
  • the housing cap expediently has an edge that encompasses the base body and the coil body all around. After assembling the relay can. the space open to the outside and enclosed by this edge is filled with casting resin, whereby the entire coil space is sealed and at the same time sealed from the contact space.
  • the relay according to FIGS. 1 to 4 has a base body 1 made of plastic, which is put over a coil 2 in the form of a trough with an open underside and carries in each case injected contact connection elements 3 on both sides of the coil.
  • the magnet system contains two U-shaped yokes 4 and 5, which are shown in FIG. 5 and 6 are shown in more detail. These yokes enclose between them a permanent magnet 6 which extends essentially over the entire length of the yoke middle sections 4a and 5a and is polarized in the direction between the two yokes. Between the pairs An upwardly directed yoke leg 4b, 5b and 4c, 5c is also an essentially U-shaped armature 7 with its downward leg 7b and 7c.
  • the armature 7 is provided in its middle part 7a with an insulating jacket 8, into which a bearing bush 9 is molded. By means of this bearing bush 9, the armature is rotatably supported in the center on a bearing journal 10 of the base body 1.
  • a coil body 11 which supports the coil winding 2 and with its flanges 11a and 11b, each sealing contact surfaces 11c and 11d (Fig. 6) with respect to the middle part 1a of the base body 1 forms.
  • the armature grips with its side legs 7b and 7c in each case on the front side over the coil. lenflansche 11a and 11b down.
  • the base body is lowered between the yoke legs 4b and 5b or 4c and 5c, so that it lies between the end of the armature legs 7b and 7c and the permanent magnet 6.
  • the base body 1 bears all around on the housing cap 12, this side wall 1b each containing the injected contact connections 3 in two rows to the side of the coil.
  • Contact springs 3 and 13 'or fixed contacts 14 are welded or molded onto the contact connections 3 above the base body 1 or on both sides of the armature 7, which in the usual way form either break contacts or make contacts or changeover contacts.
  • the contact springs 13 and 13 'shown separately in FIG. 4 can each be connected to one another and welded to a common connecting pin.
  • the coil body 11 with the yokes 4 and 5 is first inserted into the base body, the yoke legs 4b, 5b, 4c and 5c being pressed through the recesses 1d and 1e of the base body 1 until the contact surfaces 11c and 11d on Fit base body 1.
  • the anchor is inserted from above, and then the cap 12, which is made of plastic, is slipped over the base body, locking lugs 16 formed on the base body latching into corresponding recesses 17 in the cap.
  • the base body is temporarily fixed in the cap.
  • the downwardly open coil space 18 formed by the protruding edge 12a of the cap is poured out with casting resin.
  • FIGS. 5 and 6 The structure of the yokes and the coil body is shown in FIGS. 5 and 6 in a perspective view.
  • the yoke arrangement according to FIG. 5 is suitable for a bistable embodiment of the relay, since all yoke legs 4b, 5b, 4c and 5c 'are of the same design and not compared to this here. shown anchor have the same pole faces.
  • two diagonally opposed yoke legs, for example 5b and 4c are changed such that the sum of their pole faces relative to the armature is smaller than the sum of the pole faces formed by the other two yoke legs 4b and 5c.
  • each coil connection lugs 20 are fastened to the coil flanges by injection or by insertion.
  • the armature 7 and 8 show an armature 7, as was used in the relay according to FIGS. 1 to 4.
  • the armature consists of a ferromagnetic sheet-metal part which has a lateral deflection in the central region 7a in order to make room for a bearing bush in the center of gravity.
  • the two legs 7b and 7c are angled downwards and, as mentioned, engage between the paired yoke legs 4b and 5b or 4c and 5c according to FIG. 6.
  • the armature shown in FIG. 7 is intended for a monostable relay. It therefore carries a separating plate 21 on two diagonally opposite pole faces. In the monostable embodiment, as shown in FIG. 8, all pole faces are of the same design.
  • Fig. 8 shows an armature 7 with a casing 8, on each of which actuating lugs 15 are molded for contact actuation.
  • the bearing bush 9 already mentioned is formed in the central region.
  • FIGS. 9 and 10 A modified embodiment of the armature is shown in FIGS. 9 and 10.
  • the anchor is designed in a particularly simple manner as a flat sheet metal part 27, the central part 27a of which extends straight between the side legs 27b and 27c which are angled downwards.
  • 10 shows the encapsulation of the armature 27 with two plastic webs 28 and 29, on which in turn actuating lugs 15 are integrally formed.
  • FIGS. 11 and 12 One possibility for mounting this armature via a bearing spring 22 is shown in FIGS. 11 and 12.
  • This bearing spring 22 lies flat on the base body 1 and has in its central part 2 upwardly bent, angular spring tabs 22a which enclose the armature from both sides and are welded to the armature at points 22b. Since the spring tabs 22a are largely cut free and are only connected to the base plate of the spring 22 via the narrow webs ' 22c, they permit a slight deflection when the armature is switched over.
  • the spring 22 For fastening on the base body 1, the spring 22 has elongated holes 22d, into which thermally deformable fastening pins 23 which are integrally formed on the base body 1 engage. Due to the elongated holes, tolerance compensation of the spring 22 with the armature 27 is possible. Such tolerance compensation is necessary since the armature would be over-determined by the mutual contact on the yoke legs 4b, 5b, 4c, 5c and by the attachment via the spring 22.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Surgical Instruments (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
EP82109237A 1981-10-09 1982-10-06 Relais électromagnétique polarisé Expired EP0077017B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813140226 DE3140226A1 (de) 1981-10-09 1981-10-09 Polarisiertes elektromagnetisches relais
DE3140226 1981-10-09

Publications (3)

Publication Number Publication Date
EP0077017A2 true EP0077017A2 (fr) 1983-04-20
EP0077017A3 EP0077017A3 (en) 1985-05-15
EP0077017B1 EP0077017B1 (fr) 1987-01-07

Family

ID=6143788

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82109237A Expired EP0077017B1 (fr) 1981-10-09 1982-10-06 Relais électromagnétique polarisé

Country Status (4)

Country Link
US (1) US4481493A (fr)
EP (1) EP0077017B1 (fr)
JP (1) JPS5875725A (fr)
DE (2) DE3140226A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0094086A2 (fr) * 1982-05-10 1983-11-16 Babcock, Inc. Relais électromagnétique
EP1418605A1 (fr) * 2002-11-05 2004-05-12 Matsushita Electric Works (Europe) Aktiengesellschaft Relais électromagnétique

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3224070C2 (de) * 1982-06-28 1986-02-20 Siemens AG, 1000 Berlin und 8000 München Polarisiertes Relais
US5933063A (en) * 1997-07-21 1999-08-03 Rototech Electrical Components, Inc. Ground fault circuit interrupter
DE102005030046B4 (de) * 2005-06-27 2020-03-12 Te Connectivity Germany Gmbh Elektromechanisches Öffnerrelais und ein Verfahren, mit dem Ströme geschaltet werden können
US8571252B2 (en) * 2011-12-23 2013-10-29 Ggec America, Inc. Driver assembly for loudspeakers

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE966845C (de) * 1952-03-22 1957-09-12 Siemens Ag Elektromagnetisches gepoltes Antriebssystem, insbesondere fuer Relais, Wecker od. dgl.
US2884498A (en) * 1953-10-19 1959-04-28 Sigma Instruments Inc Electro magnetic devices
FR2271654A1 (fr) * 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 (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH521665A (de) * 1970-05-15 1972-04-15 Siemens Ag Elektromagnetsystem für Relais
FR2112415B1 (fr) * 1970-11-03 1976-07-23 Hartmann & Braun Ag
GB1441940A (en) * 1972-11-29 1976-07-07 Siemens Ag Electromagnetic relays
CH577747A5 (fr) * 1974-09-21 1976-07-15 Hartmann & Braun Ag
DE2629357A1 (de) * 1976-06-30 1978-01-05 Elmeg Monostabiles, elektromagnetisches haftrelais
DE3006948A1 (de) * 1980-02-25 1981-09-10 Siemens AG, 1000 Berlin und 8000 München Polarisiertes magnetsystem
CA1162218A (fr) * 1981-04-06 1984-02-14 Mitsuki Nagamoto Relais electromagnetique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE966845C (de) * 1952-03-22 1957-09-12 Siemens Ag Elektromagnetisches gepoltes Antriebssystem, insbesondere fuer Relais, Wecker od. dgl.
US2884498A (en) * 1953-10-19 1959-04-28 Sigma Instruments Inc Electro magnetic devices
FR2271654A1 (fr) * 1974-05-15 1975-12-12 Matsushita Electric Works Ltd
FR2392484A1 (fr) * 1977-05-24 1978-12-22 Siemens Ag Relais electromagnetique

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0094086A2 (fr) * 1982-05-10 1983-11-16 Babcock, Inc. Relais électromagnétique
EP0094086A3 (en) * 1982-05-10 1985-05-22 Babcock Electro-Mechanical, Inc. Electromagnetic relay
EP1418605A1 (fr) * 2002-11-05 2004-05-12 Matsushita Electric Works (Europe) Aktiengesellschaft Relais électromagnétique

Also Published As

Publication number Publication date
EP0077017B1 (fr) 1987-01-07
JPH0131651B2 (fr) 1989-06-27
DE3275042D1 (en) 1987-02-12
EP0077017A3 (en) 1985-05-15
US4481493A (en) 1984-11-06
DE3140226A1 (de) 1983-04-28
JPS5875725A (ja) 1983-05-07

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