EP1643522B1 - Relais électromagnétique - Google Patents

Relais électromagnétique Download PDF

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Publication number
EP1643522B1
EP1643522B1 EP05108833.4A EP05108833A EP1643522B1 EP 1643522 B1 EP1643522 B1 EP 1643522B1 EP 05108833 A EP05108833 A EP 05108833A EP 1643522 B1 EP1643522 B1 EP 1643522B1
Authority
EP
European Patent Office
Prior art keywords
armature
yoke
yoke leg
contact
base
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.)
Not-in-force
Application number
EP05108833.4A
Other languages
German (de)
English (en)
Other versions
EP1643522A3 (fr
EP1643522A2 (fr
Inventor
Robert Campbell
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.)
Hella GmbH and Co KGaA
Original Assignee
Hella KGaA Huek and Co
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 Hella KGaA Huek and Co filed Critical Hella KGaA Huek and Co
Publication of EP1643522A2 publication Critical patent/EP1643522A2/fr
Publication of EP1643522A3 publication Critical patent/EP1643522A3/fr
Application granted granted Critical
Publication of EP1643522B1 publication Critical patent/EP1643522B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00Details of electromagnetic relays
    • H01H50/16Magnetic circuit arrangements
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00Apparatus or processes specially adapted for the manufacture of electric switches
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00Details of electromagnetic relays
    • H01H50/02Bases; Casings; Covers
    • H01H50/04Mounting complete relay or separate parts of relay on a base or inside a case
    • H01H50/041Details concerning assembly of relays
    • H01H2050/046Assembling parts of a relay by using snap mounting techniques
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00Details of electromagnetic relays
    • H01H50/16Magnetic circuit arrangements
    • H01H50/18Movable parts of magnetic circuits, e.g. armature
    • H01H50/24Parts rotatable or rockable outside coil
    • H01H50/28Parts movable due to bending of a blade spring or reed
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00Details of electromagnetic relays
    • H01H50/16Magnetic circuit arrangements
    • H01H50/18Movable parts of magnetic circuits, e.g. armature
    • H01H50/34Means for adjusting limits of movement; Mechanical means for adjusting returning force

Definitions

  • the invention relates to an electromagnetic relay with a base in which connection elements are anchored, a magnet system with a coil, a core arranged in the coil, an L-shaped yoke and a plate-shaped armature, wherein a first yoke leg is arranged substantially parallel to the coil axis and a second yoke leg is connected to a first end of the core and wherein the armature is mounted on the first yoke leg and forms a working air gap with the second end of the core, and a contact system with a contact spring fixed to the armature and carrying a movable contact at least one anchored in the base, a fixed contact bearing fixed contact carrier.
  • Such relays are characterized by a compact design and are used for example for switching large currents, such as in low-voltage circuits of automobiles and the like.
  • it is often possible only with great effort to secure the magnet system securely on the base and adjust the restoring force of the armature return spring.
  • a relay which has a reference plane of a coil frame for measuring a position of a switching contact.
  • An essential objective of the present invention is therefore to design a relay of the type mentioned above in such a way that the magnet system and the socket can be easily manufactured and joined together with the contact system, with different designs of the coil and the contacts for different applications Relay can be produced without major change in the production.
  • the construction of the Relay is a favorable configuration of the contact terminals and the coil terminals are possible in a small space, but the necessary isolation distances between the terminals are guaranteed.
  • the relay should be easy to assemble, in particular, the air gap between the armature and the spool core and the restoring force should be easily adjustable,
  • the at least one yoke support is made of metal and is connected to a connection element anchored in the base, preferably welded.
  • the support is more reliable than in a pure support in the base, the plastic has a different thermal expansion coefficient than, for example, the metal of the magnet system.
  • additional yoke supports can not be attached to another connection element in order to avoid a short circuit.
  • the return spring for the armature extends between the fork ends of the first yoke leg and can be fixed after mounting the magnet system on the base on the yoke, at the same time the restoring force can be adjusted.
  • a set screw For adjusting the restoring force during assembly of the return spring, a set screw can be used, which could be screwed more or less far into the yoke leg in order to approximate the return spring in the desired manner to the outside of the yoke leg and thus bias.
  • Such an assembly would be very expensive. Therefore, an advantageous from the yoke leg outwardly projecting, for example embossed, pin provided on the return spring fitted with a hole, moved to reach the desired bias on the pin and fixed in the position thus achieved in an advantageous embodiment of the invention.
  • the pin can be deformed by a wobble riveting until the return spring has reached the end position.
  • a hole formed in the return spring may have a smaller diameter than the pin, wherein the edge of the hole is interrupted by radially arranged slots to form Sp lanternlappen.
  • the return spring is then pressed with the hole on the pin until the desired restoring force is reached. In this position, the Sp lanternlappen spreader on the circumference of the pin and secure the attachment of the return spring on the pin.
  • the contact spring is connected via a stranded wire with a spring connection anchored in the base.
  • the strand can preferably be arranged below the armature in the form of an arc which extends transversely over the entire width of the armature. In this way, the strand also serves to limit the stroke of the anchor.
  • connection elements in particular the contact connection elements, may in a particular embodiment of the invention have fork-shaped split terminal ends.
  • the fork ends are then preferably resilient or provided with resilient portions to ensure a desired plug contact force.
  • Relay shown has a base 1 made of insulating material, on which a magnet system with a coil 2, a coil disposed inside the core 3, an L-shaped yoke with a first yoke leg 4 and a second yoke leg 5 is arranged.
  • a first end 3a of the core is connected to the second yoke leg 5.
  • the coil 2 is with its axis substantially perpendicular to the main plane of the base, as well as to its parallel arranged first yoke leg 4.
  • a substantially flat armature 6 is disposed between the coil 2 and the base 1; it is mounted at the free end of the first yoke leg 4 and forms with a second end 3b of the core 3 a working air gap.
  • the armature 6 is held by an armature spring 7, which serves with a contact portion 7a as a contact spring and with a return portion 7b as a return spring.
  • the contact portion 7a is connected to the armature, for example by riveting or otherwise.
  • the armature spring 7 has an arc portion 7 c, with which it surrounds the bearing point of the armature on the first yoke leg 4.
  • the contact portion 7a forms with the attachment portion at least in the relaxed state an angle greater than 90 °, so that the contact portion is prevented with the armature 6 in the rest state of the magnet system of the core end 3b when the return portion 7b is attached to the outside of the yoke leg 4.
  • the yoke leg 4 has an outwardly projecting pin 8, e.g. can be produced by embossing.
  • the return leg 7b has a hole 9 whose diameter is slightly smaller than the diameter of the pin 8.
  • a plurality of slots radially or cruciform outward which in the example shown four Sp Schwarzlappen 9a be formed.
  • the number of slots and expansion lobes could be different from four.
  • the base in the present example carries two contact connection elements, namely a spring terminal 11 and a fixed contact terminal 12. All connection elements are anchored by inserting into slots of the base 1 and, if necessary, secured by stakes 13.
  • the spring terminal 11 is connected by means of a stranded wire 14 with a spring contact or movable contact 15 at the free end of the contact portion 7a.
  • the strand 14 is arcuately below the armature 6; As a result, the stroke of the armature 6 is limited without additional resources.
  • the fixed contact terminal 12 carries at its angled free end a fixed contact 16 which forms a switching contact pair with the spring contact 15.
  • a yoke support 17 made of sturdy steel wire is also attached, which is parallel to the first yoke leg 4 with respect to the coil. It could also be provided a further support at the other corner of the yoke leg 5; However, this should not be attached to the other contact terminal to avoid a short circuit.
  • the socket assembly 8 (see Fig. 2 ) and the coil assembly assembled, and then according to FIG. 4 these two modules combined.
  • the socket assembly 8 (see Fig. 2 ) and the coil assembly assembled, and then according to FIG. 4 these two modules combined.
  • For anchoring in recesses 1a of the base of the first yoke leg has two fork-shaped projections 4a, which are tooth-shaped with notches 4b.
  • the yoke is plugged onto the base, wherein the armature 6 is located between the two extensions 4a and comes to bear on the bearing edge 4c.
  • the yoke is pressed so far into the recesses 1a with the projections 4a until the air gap distance between the armature 6 and the core end 3b has the predetermined size.
  • the yoke support 17 is welded or soldered to the second core leg 5.
  • the return leg 7b For fixing the armature spring 7 and for adjusting the armature restoring force then the return leg 7b the pin 8 pressed, as in FIG. 5 and in the detail of FIG. 6 shown. The return leg is pressed so far with its hole 9 and the spreading tabs 9a on the pin until the desired restoring force is reached. The closer the return leg 7b rests against the yoke leg 4 or the smaller the angle ⁇ ( Fig6 ), the greater the restoring force.
  • FIG. 7 Another way of attaching and adjusting the armature spring is in FIG. 7 shown.
  • the return leg 7b whose hole in this case has the same diameter as the pin 8, attached to the pin 8, and then the free end of the pin is deformed to a rivet head 8a.
  • the pin is getting shorter, and the return leg 7b is pressed ever closer to the yoke leg 4.
  • the return leg 7b is fixed.
  • connection elements are arranged in two rows, wherein each one coil terminal 10 is aligned with a contact terminal 11 and 12 respectively.
  • the two coil terminals are partially disposed below the extensions 4a of the yoke leg 4, without touching them, while the contact terminals are on the opposite side of the base.
  • This novel connection configuration (footprint) of the relay enables a particularly compact design.
  • the relay is covered in the usual way with a housing cap, not shown.
  • FIGS. 8 and 9 a further embodiment of the connecting elements with forked ends is shown.
  • a coil connection element 20 is shown with fork ends 20a
  • FIG. 9 shows a contact terminal 21 with fork ends 21a.
  • the fork ends are slightly elastic, so that they yield resiliently when plugged with the formed between the fork ends plug-in slots 20b and 21b on a contact rail and thus generate the contact force.
  • contact ribs 20c and 21c may be formed in each of the plug-in slots.

Landscapes

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

Claims (8)

  1. Relais électromagnétique avec les caractéristiques suivantes :
    - un socle (1) dans lequel des éléments de raccordement (10, 11, 12, 20, 21) sont ancrés,
    - un système magnétique avec une bobine (2), un noyau (3) disposé dans la bobine, une culasse en forme de L (4, 5) et un induit en forme de plaque (6), la bobine (2) avec son axe et une première aile de culasse (4) s'étendant en parallèle à celle-ci étant disposée essentiellement perpendiculaire au plan principal du socle (1) et une deuxième aile de culasse (5) étant reliée au premier bout (3a) du noyau le plus éloigné du socle (1) et l'ancre (6) étant monté sur palier à la première aile de culasse (4) et formant un intervalle d'air de travail avec un deuxième bout (3b) du noyau dirigé vers le socle (1) et
    - un système de contact avec un ressort de contact (7a) monté sur l'ancre (6) et portant un contact mobile (15) ainsi qu'au moins un porte-contact fixe (12) ancré au socle et portant un contact fixe (16),
    - la première aile de culasse (4) s'appuie avec son bout ouvert avec deux extrémités en fourchette (4a) sur le côté supérieur du socle (1) pendant que le bout ouvert de la deuxième aile de culasse (5) s'appuie sur au moins un support de culasse (17) parallèle à la première aile de culasse également sur le côté supérieur du socle,
    - l'induit (6) est monté sur palier à un bord de palier (4b) formé entre les deux extrémités (4a) de la première aile de culasse et est fixé au moyen d'un ressort de rappel (7b) attrapant au travers les extrémités sur le côté extérieur de la première aile de culasse (4) détourné de la bobine (2),
    caractérisé en ce qu'
    au moins un support de culasse (17) est formé par une goupille métallique qui est relié sur un bout à un élément de contact (11) et sur son autre bout à la deuxième aile de culasse (5), de préférence par soudage ou brasage.
  2. Relais selon la revendication 1, caractérise en ce que le ressort de contact est formé en tant que partie du ressort d'induit (7) qui présente une partie de contact (7a) reliée à l'induit en tant que ressort de contact, une section arquée (7c) entourant le palier et une partie de rappel (7b) montée sur la première aile de culasse (4).
  3. Relais selon la revendication 2, caractérisé en ce qu'un raccordement de ressort (11) est ancré au socle (1) qui est relié à la partie de contact (7a) au moyen d'un toron (14) au-dessous de l'induit (6) qui s'étend sous forme arquée sur la largeur tomate de l'induit.
  4. Relais selon l'une des revendications 1 à 3, caractérisé en ce qu'au moins une part des éléments de raccordement (20, 21) présente des extrémités (20a, 21a) fendues en fourchette pour former des fentes d'insertion (20b, 21 b).
  5. Relais selon la revendication 4, caractérisé en ce que les extrémités (21a) présentent des cavités (21d) allongées à proximité aux fentes d'insertion (21 b).
  6. Relais selon la revendication 2, caractérisé en ce qu' un bouchon (8) est formé sur la première aile de culasse (4) qui s'engrène dans un trou (9) de la partie de rappel (7b) du ressort d'induit et la partie de rappel (7b) étant fixable sur le bouchon (8) à distance choisie de la surface de la première aile de culasse.
  7. Relais selon la revendication 6, caractérisé en ce que la distance de la partie de rappel (7b) par rapport à la surface de la première aile de culasse (4) et donc le réglage de la force de rappel est ajustable par la déformation du bouchon (8) à une tête de rivet (8a).
  8. Relais selon la revendication 6, caractérisé en ce que le diamètre du trou (9) dans la partie de rappel est inférieur à celui du bouchon (8) et sur l'étendue du trou se forment plusieurs pattes expansibles (9a) par des fentes radialement disposées qui sécurisent l'aile de rappel (7b) sur le bouchon.
EP05108833.4A 2004-09-29 2005-09-26 Relais électromagnétique Not-in-force EP1643522B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/951,701 US7116193B2 (en) 2004-09-29 2004-09-29 Electromagnetic relay

Publications (3)

Publication Number Publication Date
EP1643522A2 EP1643522A2 (fr) 2006-04-05
EP1643522A3 EP1643522A3 (fr) 2007-11-14
EP1643522B1 true EP1643522B1 (fr) 2014-01-08

Family

ID=35517540

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05108833.4A Not-in-force EP1643522B1 (fr) 2004-09-29 2005-09-26 Relais électromagnétique

Country Status (2)

Country Link
US (1) US7116193B2 (fr)
EP (1) EP1643522B1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090323301A1 (en) * 2008-06-25 2009-12-31 Lear Corporation Automotive relay system
CN102723240B (zh) * 2012-06-27 2015-07-08 宁波天波纬业电器有限公司 小型大功率继电器
DE102014103247A1 (de) * 2014-03-11 2015-09-17 Tyco Electronics Austria Gmbh Elektromagnetisches Relais
US9754747B1 (en) * 2016-04-25 2017-09-05 Song Chuan Precision Co., Ltd. Relay device

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2914713A (en) * 1957-05-21 1959-11-24 Gen Motors Corp Tensioning device
DE1129235B (de) * 1959-10-05 1962-05-10 Harold August Seele Elektromagnetisches Relais
DE8325986U1 (de) * 1983-09-09 1983-12-29 Siemens AG, 1000 Berlin und 8000 München Elektromagnetisches Relais
DE3423271A1 (de) 1984-06-23 1986-01-02 Robert Bosch Gmbh, 7000 Stuttgart Elektromagnetisches relais
AT389958B (de) * 1986-03-24 1990-02-26 Uninorm Anstalt Relais
JP2625975B2 (ja) * 1988-10-21 1997-07-02 株式会社デンソー 電磁継電器
DE4243841C1 (de) * 1992-12-23 1994-01-27 Hella Kg Hueck & Co Elektromagnetisches Relais
ATE176550T1 (de) * 1995-08-23 1999-02-15 Siemens Ag Elektromagnetisches relais und dessen verwendung auf einer leiterplatte
JP3593774B2 (ja) * 1996-01-09 2004-11-24 オムロン株式会社 電磁継電器
JP2002100274A (ja) * 2000-09-26 2002-04-05 Omron Corp 電磁リレー
JP2004172036A (ja) * 2002-11-22 2004-06-17 Omron Corp 電磁リレー

Also Published As

Publication number Publication date
US20060066424A1 (en) 2006-03-30
EP1643522A3 (fr) 2007-11-14
EP1643522A2 (fr) 2006-04-05
US7116193B2 (en) 2006-10-03

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