EP0791944B1 - Relais électromagnétique - Google Patents

Relais électromagnétique Download PDF

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Publication number
EP0791944B1
EP0791944B1 EP97102087A EP97102087A EP0791944B1 EP 0791944 B1 EP0791944 B1 EP 0791944B1 EP 97102087 A EP97102087 A EP 97102087A EP 97102087 A EP97102087 A EP 97102087A EP 0791944 B1 EP0791944 B1 EP 0791944B1
Authority
EP
European Patent Office
Prior art keywords
contact
armature
spring
coil
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
EP97102087A
Other languages
German (de)
English (en)
Other versions
EP0791944A2 (fr
EP0791944A3 (fr
Inventor
Leopold Mader
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.)
Tyco Electronics Austria GmbH
Original Assignee
Tyco Electronics Austria GmbH
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 Tyco Electronics Austria GmbH filed Critical Tyco Electronics Austria GmbH
Publication of EP0791944A2 publication Critical patent/EP0791944A2/fr
Publication of EP0791944A3 publication Critical patent/EP0791944A3/fr
Application granted granted Critical
Publication of EP0791944B1 publication Critical patent/EP0791944B1/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
    • H01H50/54—Contact arrangements
    • H01H50/56—Contact spring sets
    • 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
    • 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
    • H01H50/24—Parts rotatable or rockable outside coil
    • 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
    • H01H2050/044—Special measures to minimise the height of the relay
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
    • H01H2050/365—Stationary parts of magnetic circuit, e.g. yoke formed from a single sheet of magnetic material by punching, bending, plying
    • 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
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/56—Contact spring sets
    • H01H50/58—Driving arrangements structurally associated therewith; Mounting of driving arrangements on armature

Definitions

  • the invention relates to an electromagnetic relay with a Electromagnetic system consisting of an elongated Coil with an axis parallel to a base plane, one U-shaped core yoke, one core leg of which the coil axially penetrated and a yoke leg parallel to it below the coil extends over part of the coil length and forms a pole portion, and a substantially flat one Anchor that is approximately in extension to the yoke leg extends below the spool, with a bearing end portion is stored at the free end of the core and with an opposite pole end section the pole section of the yoke leg to form a working air gap overlaps, further with a contact arrangement with at least a fixed contact attached to a carrier and with a movable contact carried by a switch spring, and with an actuator for transmitting the armature movement the switch spring.
  • An unpoled relay with the structure mentioned above is known for example from EP 0 375 398 A2.
  • the magnet system contains a U-shaped core yoke, with a Anchor is supported at a core end and with a yoke leg forms the working air gap below the coil.
  • the anchor in the overlap area between the Yoke leg and the coil arranged so that the switching movement the armature is directed outwards from the coil.
  • the Contacts are under the moving armature, which causes does not result in optimal use of space. Accordingly owns the relay there also has only one make contact, while a changeover contact requires additional height. Since there also no very large insulation distances between the magnet system and contact arrangement are possible, the switching capacity is limited.
  • the aim of the present invention is to provide a relay of the input mentioned type with a flat structure and if possible to create a small volume with only a few individual parts good use of space is achieved.
  • the relay should manage high switching capacities with low excitation power can; the construction should also have good insulation enable between the magnet system and the contact arrangement.
  • the contact arrangement is supposed to be a normally open or NC contact as well as a changeover contact within the enable mentioned low construction.
  • this goal is achieved with a relay mentioned type achieved in that the pole section of the yoke leg between the armature and the coil is that the switch spring extends substantially below the armature and that the contacts in a below the yoke leg formed in the area in front of the movable anchor end Contact space are arranged.
  • the inventive design of the magnet system the armature is pulled towards the coil when energized, the switch spring so pulled in that direction.
  • the yoke leg lies with this construction as close as possible to the coil, so that the contact space below the yoke leg more Available height than that below the movable anchor located area. So without further ado low height a changeover contact can be accommodated, while the switch spring is substantially below the movable anchor and approximately parallel to this approximately can extend over the entire length of the relay.
  • the actuator intervenes in the area between clamping and Contact end on the switch spring.
  • a base body made of insulating material underneath the magnet system, the the switch spring and the carrier or carriers for the Fixed contacts and a partition between the magnet system and the contact arrangement, which only has an opening for the actuator.
  • the partition of the Base body is designed step-like to one side below of the yoke leg to form the higher contact space and on the other hand, there is enough space underneath the anchor for it To provide switching movement.
  • the main body has in an expedient embodiment still down molded, at least partially surrounding the control room Side walls on which a spring support carrying the switching spring and a make contact carrier and / or a break contact carrier anchored in plug-in shafts by plug-in fastening are.
  • the partition can protrude to the underside at its edge Form an insulating collar.
  • the actuator itself in an advantageous embodiment has one on the anchor hooked hook part and an engaging on the switching spring Foot part, the latter with the insulating collar labyrinthine can interlock. This way will be special long creepage distances between the armature or the magnet system on the one hand and the switching spring on the other hand, whereby the relay despite high height for low Switching capacity is suitable.
  • the essentially elongated anchor is more convenient Design a short, angled towards the core Bearing end section, which in a recess of the core end supported on three sides enclosing coil body flange is.
  • the armature is preferred with its movable end by a return spring biased away from the yoke leg, with a central portion on a lever line parallel to the bearing axis of the base body is pivotable, so that due to the leverage its bearing section is pressed into the bearing.
  • This lever line is expediently by a rolling edge formed of the base body; But it would also be conceivable in the middle area of the anchor itself to provide an edge with which it could also roll on a flat surface of the base body.
  • the return spring is advantageously by at least one integrally connected to the switching spring, by one but the contact spring carrying the movable contact is effective separate reset leg formed.
  • the relay shown in Figures 1 to 7 exists according to Figure 1 from a base body 1, the one on its underside Contact arrangement 2 carries with an actuator 3, and a magnet system arranged above the base body 4.
  • the relay system is arranged in a housing that is formed by a base plate 5 and a cap 6.
  • the base body 1 is box-shaped made of insulating material and forms a partition 11 between the magnet system 4 and the contact arrangement 2, which only has an opening 12 for has the actuator 3.
  • a control room 13 formed by the side walls 14 of the Basic body is surrounded and on one side by a staged formation of the partition 11 in a contact space 13a passes with greater height.
  • a switching spring 21 over most of its length approximately parallel to the bottom of the relay by the Base plate 5 is set.
  • the switching spring 21 is flat Leaf spring cut and forms a frame-shaped contact spring 22 with current-carrying side legs 22a, which are merge towards the free end to form a contact section 22b; on this a movable contact 29 is attached.
  • two actuating tabs 22c on the contact portion 22b cut free on both sides within the frame shape, such that they point towards the clamping point.
  • the switching spring 21 forms one piece with the contact spring 22 a fork-shaped return spring 23, which is essentially starting from the attachment end 21a of the switch spring is separated from the contact spring 22 and with two Reset legs 23a substantially parallel within the Frame shape of the contact spring 22 parallel to the side legs 22a extends (see also Figure 3).
  • the return spring 23 forms a U-shape with its reset legs 23a, the to the outer contour of the actuator to be described 3 is adjusted.
  • the switching spring 21 is on a fastening end 21a Spring bracket 24 attached, which in turn via fastening tabs 24a in slots 14 on opposite Side walls 15 of the base body 1 are anchored.
  • the mounting tabs 24a have hook-shaped contours for better Anchoring; there is also a terminal lug on the spring support 24 24b formed by a corresponding Breakthrough of the base plate 5 is guided to the outside.
  • the contact arrangement further comprises an NC contact carrier 25 with an NC contact 26 and one Normally open contact carrier 27 with a normally open contact 28. Both contact carriers are via fastening sections 25a and 27a in corresponding plug-in shafts 16 of the base body 1 anchored. They also each have terminal lugs 25b or 27b, which led through the base plate 5 to the outside are.
  • the contact carriers 25 and 27 are designed and in the contact space 13a arranged so that the movable contact 29 optionally with the normally closed contact 26 and the normally open contact 28 works together.
  • the magnet system 4 arranged above the base body has a bobbin 41 with a winding 42, the axis is parallel to the bottom of the relay.
  • a core yoke 43 forms in one piece a core leg 43a, which axially extends through the entire coil, and a yoke leg 43b, which is parallel to the core leg below the coil extends close to the winding to about half the coil length.
  • An anchor 44 extends with its main part flat in extension of the yoke leg 43b, one in Cross-section recessed pole end portion 44a also Pole section 43c of the yoke leg that has a reduced cross section overlaps.
  • a bearing end portion 44b of the armature is angled towards the free core end 43d and in a pocket 45 of a bobbin flange 41a mounted so that it rolls on the free core end 43d.
  • the bobbin flange 41a surrounds this free core end 43d on three sides and secures it the bearing end portion 44b of the armature with retaining ribs 41b also against wandering away in the axial direction of the coil.
  • in the rest of this end portion 44b of the armature is passed through the restoring force of the return spring 23 in the storage pressed the core end 43d. This restoring force acts on the movable armature end 44c and pulls it away from the coil downward.
  • the switching movement of the Anchor transmits has a hook portion 31 which is essentially the opening 12 of the partition perpendicular to the base plane 11 interspersed and with its hook-shaped end on one Breakthrough 44d of the armature 44 is suspended. Over the free The end of this hook part 31 is also in the pole section 43c of the pole leg 43b is provided with a recess 43e which is a complete attachment of the anchor to the yoke leg in this Area allows.
  • the actuator 3 has a flat foot part 32, which lies essentially in the plane of the switching spring 21 and has an M-shape in this example.
  • the middle leg of the M is connected to the hook part 31.
  • a guide groove 33 is formed, in each of which a guide tab 23b of the adjacent return leg 23a engages.
  • actuating cam 34 which is below the adjacent actuating tab 22d of the contact spring and with an upward movement of the actuator 3 brings the contact spring into the closed position.
  • the relay is installed in such a way that, on the one hand the magnet system according to Figure 4 is pre-assembled and on the other hand the contact arrangement 3 in the base body from the bottom is anchored here.
  • the magnet system according to FIG. 4 is assembled with the base body according to FIG. 5, wherein Coil connector pins 46 in corresponding openings of the Basic body are inserted.
  • the actuator 3 by the frame-shaped switching spring inserted through and hooked into the anchor.
  • the purpose of the actuator 3 is initially in an inclined position, as dashed in FIG. 2 with the reference symbol 3 ' shown, guided upwards, with the hook part 31 in the Breakthrough 12 inserted and then in the final position pivoted.
  • Any plastic abrasion is also without snap-in connections avoided, which could endanger the contacts.
  • the bottom plate 5 and the cap 6 then become the housing formed, which also seals in a known manner can be.
  • FIGS. 8 and 9 show two further possible designs the switch spring and corresponding to the actuator shown.
  • the switching spring 121 according to FIG. 8 has a contact spring 122, which is a modification of the Contact spring 22 of Figure 3 now only a single, center has arranged leg, at the end of a contact section 122b carries the movable contact 29.
  • the Return spring 123 is in this case by two on both sides next to the outer sides of the contact spring return legs 123a formed, each at their free ends have outwardly angled actuating lugs 123b.
  • Corresponding the modified form of the switch spring 123 is also a modified actuator 103 is provided.
  • the two hook parts 131 extend itself up to the anchor, the anchor being natural is appropriately designed on both sides to hang to permit the hook parts 131, and also the Base body in its partition instead of the previously described central opening 12 now two outside Breakthroughs must have.
  • the spring support 24 is as in the previous one Designed embodiment.
  • FIG. 9 shows a further modification compared to FIG. 8.
  • the Switch spring 221 has a similar to switch spring 121 central contact spring 222 with a contact section 222b and a reset leg 223a formed by the outside Return spring 223, with the return leg on have a guide lug 223b at its end.
  • the actuator 203 is similar to the actuator 103 U-shaped designed. It has two hook parts 231 and one across extending foot portion 232, in which guide grooves 233 for Recording the guide tabs 223b are formed.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Linear Motors (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Surgical Instruments (AREA)
  • Valve Device For Special Equipments (AREA)
  • Cookers (AREA)

Claims (11)

  1. Relais électromagnétique comportant un système électromagnétique, comprenant une bobine à extension longue (41, 42), avec un axe orienté parallèlement à un plan de base,
       un agencement noyau-culasse en U (43), dont une branche de noyau (43a) traverse la bobine axialement, une branche de culasse (43b) s'étendant parallèlement au-dessous de la bobine sur une partie de la longueur de la bobine et formant une section polaire (43c),
       une armature pratiquement plate (44) s'étendant presque en prolongement de la branche de culasse (43b) au-dessous de la bobine, avec une section d'extrémité de support (44b) supportée au niveau de l'extrémité libre du noyau (43d) et chevauchant avec une section d'extrémité polaire opposée (44c) la section polaire (43c) de la branche de culasse (43b) en formant un entrefer de travail, ainsi qu'un
       agencement de contacts avec au moins un contact fixe (26, 28) fixé sur un support de contact (25, 27) et avec un contact mobile (29) supporté par un ressort de commutation (21; 121; 221) et
       un organe d'actionnement (3; 103; 203) destiné à transmettre le mouvement au ressort de commutation (21),
       caractérisé en ce que la section polaire (43c) de la branche de culasse (43b) est agencée entre l'armature (44) et l'enroulement de la bobine (42), en ce que le ressort de commutation (21; 121; 221) s'étend pour l'essentiel au-dessous de l'armature (44) et en ce que les contacts (26, 28, 29) sont agencés dans un espace de contacts (13a) formé au-dessous de la branche de culasse (43b) dans la région avant l'extrémité mobile de l'armature (44c).
  2. Relais selon la revendication 1, caractérisé en e que le ressort de commutation (21; 121; 221) est fixé dans la région située au-dessous du support de l'armature (45, 44b), qu'il s'étend au-dessous de l'armature (44) jusque dans l'espace des contacts (13a) et en ce que l'organe d'actionnement s'engage dans celui-ci dans un espace de commutation intermédiaire (13).
  3. Relais selon les revendications 1 ou 2, caractérisé en ce qu'un corps de base (1) composé de matériau isolant est agencé au-dessous du système magnétique (41, 42, 43, 44), supportant le ressort de commutation (21; 121; 221) ainsi que le ou les supports de contact (25, 27) et formant une paroi de séparation (11) entre le système magnétique et l'agencement de contacts, présentant une seule ouverture (12) ou des ouvertures pour l'organe d'actionnement (3; 103; 203).
  4. Relais selon la revendication 3, caractérisé en ce que le corps de base (1) comporte des parois latérales (15) agencées vers le bas, entourant au moins partiellement l'espace de commutation (13) ou l'espace des contacts (13a), sur lesquelles sont ancrés un support de ressort (24) supportant le ressort de commutation (21) ainsi que le ou les supports de contact (25, 27) par fixation par insertion dans des cavités d'insertion (14, 16).
  5. Relais selon la revendication 4, caractérisé en ce que la paroi de séparation (11) forme un collier isolant (18) débordant vers le côté inférieur sur le bord de l'ouverture (12).
  6. Relais selon la revendication 5, caractérisé en ce que l'organe d'actionnement (3) comporte un élément de crochet (31) accroché sur l'armature (44) et une partie de pied (32) engagée dans le ressort de commutation, cette dernière s'engageant en labyrinthe dans le collier isolant.
  7. Relais selon l'une des revendications 1 à 6, caractérisé en ce que la section d'extrémité de support (44b) de l'armature (44) est coudée en direction de la branche du noyau (43a) et est agencée dans un évidement (45) d'une bride du corps de la bobine (41 a) renfermant l'extrémité libre de la banche du noyau (43d) au niveau de trois côtés.
  8. Relais selon l'une des revendications 1 à 7, caractérisé en ce qu'en cas d'absence d'excitation du système magnétique (41, 42, 43, 44) la section d'extrémité polaire de l'armature (44) est poussée à l'écart de la branche de culasse (43b) par un ressort de rappel (23), une section médiane correspondante reposant par pivotement sur une ligne de levier du corps de base (1) parallèle à l'axe de support, sa section de support (44b) étant ainsi pressée dans le support par suite de l'effet de levier.
  9. Relais selon la revendication 8, caractérisé en ce que la ligne de levier (17) est établie par un bord de déroulement du corps de base (1).
  10. Relais selon la revendication 8, caractérisé en ce que la ligne de levier est établie par un bord de déroulement de l'armature.
  11. Relais selon l'une des revendications 8 à 10, caractérisé en ce que le ressort de rappel (23; 123; 223) est formé par au moins une branche de rappel (23a; 123a; 223a) reliée d'une seule pièce au ressort de commutation (21; 121; 221), séparée du ressort de contact (22; 122; 222) du point de vue de l'action.
EP97102087A 1996-02-23 1997-02-10 Relais électromagnétique Expired - Lifetime EP0791944B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19606884 1996-02-23
DE19606884A DE19606884C1 (de) 1996-02-23 1996-02-23 Elektromagnetisches Relais

Publications (3)

Publication Number Publication Date
EP0791944A2 EP0791944A2 (fr) 1997-08-27
EP0791944A3 EP0791944A3 (fr) 1998-10-07
EP0791944B1 true EP0791944B1 (fr) 2002-05-02

Family

ID=7786275

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97102087A Expired - Lifetime EP0791944B1 (fr) 1996-02-23 1997-02-10 Relais électromagnétique

Country Status (6)

Country Link
US (1) US5844456A (fr)
EP (1) EP0791944B1 (fr)
JP (1) JP3779020B2 (fr)
AT (1) ATE217118T1 (fr)
DE (2) DE19606884C1 (fr)
ES (1) ES2175201T3 (fr)

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JP7149824B2 (ja) * 2018-11-30 2022-10-07 富士通コンポーネント株式会社 電磁継電器
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JPH0733344Y2 (ja) * 1988-12-23 1995-07-31 松下電工株式会社 電磁継電器
DE3908442A1 (de) * 1989-03-15 1990-10-11 Eberle Gmbh Elektromagnetisches schaltgeraet
JPH07506696A (ja) * 1992-05-15 1995-07-20 シーメンス アクチエンゲゼルシヤフト 有極電力継電器
DE19520220C1 (de) * 1995-06-01 1996-11-21 Siemens Ag Polarisiertes elektromagnetisches Relais
EP0780870A3 (fr) * 1995-12-21 1998-10-07 Siemens Aktiengesellschaft Rélais électromagnétique monostable de petite dimension

Also Published As

Publication number Publication date
DE19606884C1 (de) 1997-04-30
EP0791944A2 (fr) 1997-08-27
ES2175201T3 (es) 2002-11-16
EP0791944A3 (fr) 1998-10-07
JPH09320433A (ja) 1997-12-12
DE59707127D1 (de) 2002-06-06
JP3779020B2 (ja) 2006-05-24
ATE217118T1 (de) 2002-05-15
US5844456A (en) 1998-12-01

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