EP0251035B1 - Relais électromagnétique - Google Patents

Relais électromagnétique Download PDF

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Publication number
EP0251035B1
EP0251035B1 EP87108705A EP87108705A EP0251035B1 EP 0251035 B1 EP0251035 B1 EP 0251035B1 EP 87108705 A EP87108705 A EP 87108705A EP 87108705 A EP87108705 A EP 87108705A EP 0251035 B1 EP0251035 B1 EP 0251035B1
Authority
EP
European Patent Office
Prior art keywords
armature
base body
contact
relay
relay according
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 - Lifetime
Application number
EP87108705A
Other languages
German (de)
English (en)
Other versions
EP0251035A1 (fr
Inventor
Josef Dr.Rer.Nat. Weiser
Klaus Dipl.-Ing. Lüneburger
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
Priority to AT87108705T priority Critical patent/ATE69668T1/de
Publication of EP0251035A1 publication Critical patent/EP0251035A1/fr
Application granted granted Critical
Publication of EP0251035B1 publication Critical patent/EP0251035B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
    • H01H50/041—Details concerning assembly of relays
    • H01H50/043—Details particular to miniaturised relays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/28—Relays having both armature and contacts within a sealed casing outside which the operating coil is located, e.g. contact carried by a magnetic leaf spring or reed

Definitions

  • a relay with the above construction is known from US-A-4,206,432.
  • a single-piece coil former with an axially continuous contact space serves as the base body, in which pole plates or yokes are inserted into corresponding grooves from the two open end faces.
  • An anchor which bridges the air gap between two aligned pole plates, is attached to each of the yokes via an anchor spring.
  • the actual contact is not made via the armature itself, but via the armature spring, which is extended as a contact spring beyond the free end of the armature and cooperates with a contact attached to the counter-pole plate.
  • the armature bridges two pole plates as a separate part, it is not a bridge contact, since the armature rolls on one pole plate and there is no double power interruption even when opening.
  • a multiple contact for a reed relay is known from DE-A-20 59 390, which has a two-part base body. There, in one housing part, several pairs of pole plates are arranged in one plane and pressed with glass frit. In addition, an armature is assigned to each pair of pole plates, which is connected to the one pole plate by means of an armature return spring.
  • the multiple contact shown there is not yet a complete relay, since, for example, a coil winding is missing and the contact housing is not designed directly to accommodate a winding.
  • the projections of the contact elements protrude from the housing on the end side opposite to one another as flux guide plates. When used in a relay, they would first have to be provided with connections.
  • the object of the invention is to design a relay of the type mentioned in such a way that it can be produced with a few simple parts and simple operations, has a high switching capacity with a small volume and is designed either as a bridge contact for switching off high voltages or as required without significant design change can also be provided with a lead contact.
  • the base body consists of two parts, which form the all-round contact space with trough-shaped recesses facing one another, that the connection elements emerge from the respective coil flange in the region of a longitudinal side and are bent outside the base body to the connection side of the relay and that the anchor beam in the interface between the two base parts parallel to the plane of the pole plates is held and carries the armature over a section extending into the contact space.
  • all sheet metal parts are of flat design, only the two pole sheets having to be inserted, for example embedded or inserted, into one base body part.
  • the anchor designed as a flat plate and the likewise flat anchor carrier can be connected to one another before assembly, for example by welding.
  • the armature carrier is clamped between the two base body parts during assembly, as a result of which the armature is given the predetermined air gap or contact distance to the two flat pole plates.
  • the separate clamping of the armature via its support parallel to the pole plates creates a bridge contact that is suitable for switching off high voltages.
  • the simply designed switching elements namely the pole plates and the armature, can be coated with suitable coating methods, such as. B. laser electroplating, provided with suitable contact layers for switching high currents. Since, in the case of the armature provided here, contact between the armature and one of the pole plates closes first, the arrangement can also be designed and switched as a lead contact. In this case, the pole plates are connected to one another in an electrically conductive manner, for example by a welded-on contact layer.
  • the anchor carrier is provided with its own connection element which, for example, is formed in one piece and can be led out to the side in the parting plane between the two base body parts.
  • connection element for example, is formed in one piece and can be led out to the side in the parting plane between the two base body parts.
  • the anchor carrier is designed as a flat frame or frame part, which is formed in a circumferential, between the two base body parts Groove is held and carries the anchor via a tongue protruding into the interior of the frame.
  • the anchor carrier is designed as a spring band clamped on one side.
  • a spring band is possible which extends through the entire contact space and is supported with both ends in a corresponding groove formed between the two base body parts.
  • a longitudinal displacement of the anchor beam can either be limited by appropriate end walls of the respective groove in the base body parts.
  • the above-mentioned frame-shaped anchor carrier can be anchored on all sides between the base body parts, since the tongue which projects inward only approximately up to the middle of the contact space ensures the mobility of the anchor.
  • the armature carrier can have an adjustment web projecting towards the outside of the base body, by means of which it can be displaced in its position relative to the pole plates before the final fixing, in order to bring the response and dropout values of the relay into a desired range.
  • the relay shown in FIG. 1 shows a two-part base body, the lower part 1 and the upper part 2 of which are approximately half-shell-shaped and are joined together in such a way that they result in a coil former on which a winding 3 is applied.
  • the lower base body part 1 has a trough-shaped recess 4
  • the upper base body part 2 has a corresponding trough-shaped recess 5, which together form the contact space.
  • two pole plates 6 and 7 are embedded, in such a way that their free ends extend into the contact space 4, 5 and face each other at a certain distance.
  • the pole plates 6, 7 can also each be anchored with their longitudinal edges in the side walls of the contact space. A plug-in fastening instead of the embedding would also be possible.
  • connection element 6a formed transversely to its longitudinal extent in the same plane, which outside the base body is bent perpendicularly downwards to the connection level of the relay.
  • connection element 6a can be designed as a conventional connecting pin or shaped into a flat contact 6b as shown in FIG. 1.
  • the relay is therefore suitable for surface mounting (SM technology).
  • a corresponding connection 7a with a flat contact 7b is formed on the pole plate 7 in the region of the flange 2b.
  • Corresponding connection elements 6a and 7a can optionally or additionally be led out on the opposite side of the relay.
  • coil connection pins 3a are embedded in the flanges 1a and 1b in the lower housing part 1, which, like the contact connection elements 6a and 7a, can optionally be provided on one or the other side of the relay or on both sides.
  • An armature 8 is arranged in the contact space 4, 5 and is held parallel to the two pole plates 6 and 7 at a predetermined contact distance and forms an overlap area with each of these pole plates.
  • the armature 8 bridges the two pole plates magnetically and electrically.
  • it is provided with a contact layer 8a in the overlapping areas.
  • Corresponding contact layers are also applied to the pole plates.
  • the armature 8 is held by a frame-shaped armature support 9, which will be explained in more detail later with reference to FIG. 2.
  • the connection between the armature 8 and the armature support 9 is made by spot welding 10. However, other connection options are also possible.
  • the design and arrangement of the anchor carrier 9 in connection with a part of the base body is shown in FIG. 2.
  • the lower base body part 1 has the trough-shaped recess 4 in the central region, which forms the lower part of the contact space.
  • a frame-shaped shoulder 11 is provided in the base body part 1, the height of which corresponds approximately to half the thickness of the anchor support 9 made of spring material. (The dimensions of paragraph 11 are exaggerated in Fig. 2 both in height and in width).
  • a corresponding paragraph is also provided in the upper housing part 2, not shown in FIG. 2, so that when the two housing parts 1 and 2 are joined together, a frame-shaped groove is formed between them, in which the anchor carrier 9 inserted between them is held.
  • a tongue 9 a which carries the armature 8, is formed on the inside of a cross bar of the frame 9. If the longitudinal extent of the paragraph 11 in the base body parts 1 and 2 is longer than the frame of the anchor bracket 9, as shown in Fig. 2, the anchor bracket 9 can still be moved within its mounting plane even after the housing parts have been joined together, so that the respective faces of the armature facing the pole plates 6 and 7 can be changed in order to adjust the response sensitivity of the relay.
  • it has on one side an outwardly projecting adjustment web 12 which can be actuated from the outside in a corresponding recess 13 of the base body 1 or 2. After the adjustment of the relay, the opening 13 can be closed, for example, by pouring in casting compound or adhesive, which simultaneously fixes the position of the armature.
  • FIGS. 3 and 4 A modified version of the anchor carrier 9 with the anchor 8 is shown in FIGS. 3 and 4 again in side view and in plan view.
  • the anchor bracket has a frame shape with a tongue 9a extending into the interior of the frame.
  • the armature 8 is kept so large that its width almost corresponds to the width of the frame cutout or of the contact space and the length is even slightly longer than the frame cutout of the resilient armature carrier 9.
  • the armature 8 lies in the rest position its two ends 8b slightly on the crossbars of the frame-shaped support and is supported in a defined manner.
  • the contact space 4 also exceeds the length of the armature in length, so that its movement is not hindered. 4
  • the surface 14 of the anchor carrier 9 clamped in the base body is indicated by hatching.
  • FIGS. 5 and 6 A modified embodiment of the anchor carrier is shown in FIGS. 5 and 6, again in side view and in plan view.
  • An anchor bracket 19 is shown, which is designed only as a leaf spring clamped on one side. To improve the clamping, the clamped end 19a is widened in a T-shape. It is held in a corresponding groove, not shown, between the two base parts 1 and 2. Also in this one Illustration shows the connection point between anchor and anchor carrier in the form of a weld spot. In order to ensure a defined position of the armature and thus a defined response, it is also expedient in this case to fix the armature carrier 19 between the two base body parts 1 and 2.
  • the manufacture of the relay is easy because all metal parts are flat stampings that do not need to be bent; the subsequent bending of the connection elements 6a, 7a or 3a on the outside of the base body can be disregarded here.
  • the pole plates 6 and 7 are thus injected as flat stamped parts in the upper housing part 2, while the coil connection elements 3a are injected into the lower housing part 1.
  • the anchor carrier 9 and 19 with the welded-on anchor 8 being arranged between the two housing parts. In this way, he already receives the specified contact distance to the pole plates. Then the coil winding 3 can be applied and, if necessary, the armature carrier can be adjusted for adjustment.
  • the parting line between the two housing parts can then be sealed.
  • a ferromagnetic film 15 is also applied as a flux return via the upper housing part.
  • a final overmolding or dipping process could, if necessary, ensure the fixation of the iron foil and the coil as well as a secure seal of the interior.
  • the armature serves as a bridge contact and therefore does not require its own connection.
  • the relay can also be provided with a lead contact or a follow-up contact.
  • a constructive change is practically not necessary.
  • Only the two pole plates 6 and 7 are connected in an electrically conductive manner, for example by welding a contact layer.
  • the armature requires its own connection element, while one of the connection elements of the pole plates can be omitted.
  • This connecting element for the armature can be injected, for example, in the lower housing part 1, an end projecting on the inside being connected to the armature carrier, for example by welding.
  • the response behavior can be set in a targeted manner by appropriate selection of the connection point between anchor and anchor carrier outside the center in the longitudinal direction of the anchor.
  • contact layers of different properties are then provided in a known manner between armature and pole plates.

Landscapes

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

Claims (11)

  1. Relais électromagnétique
    - avec un corps de base de la forme d'un corps de bobine (1, 2) en une matière plastique, dont l'intérieur forme une chambre de contact (4, 5) et aux deux extrémités duquel sont conformés deux flasques (1a, 1b, 2a, 2b,),
    - avec deux tôles polaires planes (6, 7) qui sont ancrées dans le corps de base (1, 2), dans un plan commun, qui, dans la chambre de contact se situent à distance l'une de l'autre par leurs extrémités libres et qui comportent respectivement, dans la zone d'un flasque de bobine (2a, 2b) et au moins sur un côté des éléments de branchement (6a, 7a) conformés transversalement par rapport à leur extension longitudinale, et sortant du corps de base (1, 2) dans le même plan,
    - avec une armature de contact plane (8) qui est supportée dans la chambre de contact (4, 5) à l'aide d'un support d'armature (9 ; 19) de la forme d'un ressort à lame plan (9 ; 19), et qui, lors de l'excitation du relais ponte les extrémités libres des tôles polaires (6, 7), et
    - avec des éléments de branchement de la bobine, qui sont ancrés dans les flasques de bobine,
    caractérisé par le fait
    que le corps de base est constitué par deux parties (1, 2) qui forment avec des ouvertures en forme d'auges (4, 5), situées l'une en face de l'autre, la chambre de contact à périphérie fermée sur elle-même, que les éléments de branchement (6a, 7a) sortent, dans la zone d'un côté longitudinal, du flasque de bobine concerné (2a, 2b) et sont repliés ou recourbés, en dehors du corps de base, en direction du côté du branchement,
    et que le support d'armature (9 ; 19) est supporté dans la surface de séparation, parallèlement au plan des deux pôles polaires, et porte l'armature (8) par l'intermédiaire d'une section (9a) qui s'étend dans la chambre de contact.
  2. Relais selon la revendication 1, caractérisé par le fait que le support d'armature (9) et supporté, en tant que cadre plan, dans une gorge périphérique (11) et qu'il porte l'armature à l'aide d'une languette (9a) qui est saillante dans la chambre intérieure du cadre.
  3. Relais selon la revendication 1, caractérisé par le fait que le support d'armature (19) est réalisé sous la forme d'une bande élastique encastrée à une extrémité et porte l'armature (8) à son extrémité libre.
  4. Relais selon la revendication 3, caractérisé par le fait que la fixation de l'armature (8) sur le support d'armature (9 ; 19), est prévue en dehors de son milieu, si l'on regarde dans la direction longitudinale.
  5. Relais selon la revendication 1, caractérisé par le fait que le support d'armature est réalisé sous la forme d'une bande élastique, qu'il s'étend à travers la chambre de contact, sur toute la longueur de celle-ci, et qu'il est monté, par ces deux extrémités, dans des gorges correspondantes.
  6. Relais selon l'une des revendications 1 à 5, caractérisé par le fait que les tôles polaires (6, 7) sont noyées dans le corps de base ou dans l'une (2) des parties du corps de base.
  7. Relais selon l'une des revendications 1 à 5, caractérisé par le fait que les tôles polaires sont fixées dans des canaux à enfichage du corps de base ou de l'une (2) des parties du corps de base.
  8. Relais selon l'une des revendications 1 à 7, caractérisé par le fait que les tôles polaires sont guidées, des deux côtés, dans les parois latérales de la chambre de contact (4, 5).
  9. Relais selon l'une des revendications 1 à 7, caractérisé par le fait que l'armature (8) forme avec les tôles polaires un contact séquentiel, étant noté que les tôles polaires (6, 7) sont reliées à conduction électrique et que le support d'armature (19) est également pourvu d'un élément de branchement qui est conformé dans la zone d'un flasque de bobine, transversalement à l'axe de celle-ci.
  10. Relais selon l'une des revendications 1 à 9, caractérisé par le fait que le support d'armature (9) comporte une barrette d'ajustage (12) qui s'étend, dans la direction longitudinale, au-delà de la surface de séparation entre les parties du corps de base (1, 2).
  11. Relais selon l'une des revendications 1 à 10, caractérisé par le fait qu'au titre de fermeture du circuit du flux, au dispose une feuille ferromagnétique (14) sur la face supérieure et au moins partiellement sur les deux faces frontales du corps de base.
EP87108705A 1986-06-23 1987-06-16 Relais électromagnétique Expired - Lifetime EP0251035B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87108705T ATE69668T1 (de) 1986-06-23 1987-06-16 Elektromagnetisches relais.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3620974 1986-06-23
DE3620974 1986-06-23

Publications (2)

Publication Number Publication Date
EP0251035A1 EP0251035A1 (fr) 1988-01-07
EP0251035B1 true EP0251035B1 (fr) 1991-11-21

Family

ID=6303502

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87108705A Expired - Lifetime EP0251035B1 (fr) 1986-06-23 1987-06-16 Relais électromagnétique

Country Status (6)

Country Link
US (1) US4827234A (fr)
EP (1) EP0251035B1 (fr)
JP (1) JPS6326919A (fr)
AT (1) ATE69668T1 (fr)
DE (1) DE3774623D1 (fr)
ES (1) ES2026863T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3813119A1 (de) * 1988-04-15 1989-10-26 Siemens Ag Spulenkoerper und verfahren zur herstellung eines spulenkoerpers
DE19627844C1 (de) 1996-07-10 1997-08-28 Siemens Ag Elektromagnetisches Relais und Verfahren zu dessen Herstellung

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3171190A (en) * 1959-01-21 1965-03-02 Gen Electric Manufacture of electromagnetic relay
DE1514788A1 (de) * 1966-03-09 1969-04-30 Standard Elek K Lorenz Ag Elektromagnetisches Relais mit in Schutzrohren angeordneten Ankerkontakten
US3587011A (en) * 1970-01-09 1971-06-22 Pyrofilm Corp Reed switch and relay
BE786042A (fr) * 1970-12-02 1973-01-10 Int Standard Electric Corp Equipement de contact multipolaire place sous enveloppe scellee
GB1462101A (en) * 1974-03-11 1977-01-19 Square Dco Magnetic contact units
US4031493A (en) * 1975-12-12 1977-06-21 Bell Telephone Laboratories, Incorporated Miniature low profile relay
DE2711480C2 (de) * 1977-03-16 1985-10-24 Siemens AG, 1000 Berlin und 8000 München Elektromagnetisches Miniaturrelais
US4206432A (en) * 1978-04-07 1980-06-03 International Standard Electric Corporation Electromagnetic relay
DE3025814C2 (de) * 1980-07-08 1985-06-13 Siemens AG, 1000 Berlin und 8000 München Elektromagnetisches Relais
DE3378805D1 (en) * 1982-07-06 1989-02-02 Nec Corp Transfer-type electromagnetic relay
JPS6168452U (fr) * 1984-10-09 1986-05-10

Also Published As

Publication number Publication date
ATE69668T1 (de) 1991-12-15
JPS6326919A (ja) 1988-02-04
EP0251035A1 (fr) 1988-01-07
ES2026863T3 (es) 1992-05-16
DE3774623D1 (de) 1992-01-02
US4827234A (en) 1989-05-02

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