EP2251886B1 - Relais électromagnétique et son procédé d'assemblage - Google Patents

Relais électromagnétique et son procédé d'assemblage Download PDF

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Publication number
EP2251886B1
EP2251886B1 EP20090160229 EP09160229A EP2251886B1 EP 2251886 B1 EP2251886 B1 EP 2251886B1 EP 20090160229 EP20090160229 EP 20090160229 EP 09160229 A EP09160229 A EP 09160229A EP 2251886 B1 EP2251886 B1 EP 2251886B1
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EP
European Patent Office
Prior art keywords
unit
pair
electromagnetic
coil winding
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.)
Not-in-force
Application number
EP20090160229
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German (de)
English (en)
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EP2251886A1 (fr
Inventor
Ming-Chang Kuo
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.)
Good Sky Electric Co Ltd
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Good Sky Electric Co 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.)
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Publication date
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Priority to EP20090160229 priority Critical patent/EP2251886B1/fr
Publication of EP2251886A1 publication Critical patent/EP2251886A1/fr
Application granted granted Critical
Publication of EP2251886B1 publication Critical patent/EP2251886B1/fr
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/44—Magnetic coils or windings
    • H01H50/443—Connections to coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H2011/0087—Welding switch parts by use of a laser beam
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/44—Magnetic coils or windings
    • H01H2050/446—Details of the insulating support of the coil, e.g. spool, bobbin, former
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/023—Details concerning sealing, e.g. sealing casing with resin
    • 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
    • H01H51/22—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
    • H01H51/229—Blade-spring contacts alongside armature

Definitions

  • the present invention relates to an electromagnetic relay, more particularly to an electromagnetic relay including an armature component supported pivotally at a middle portion thereof.
  • U.S. Patent No. 4,881,053 discloses an electromagnetic relay 1 including a casing 11, an electromagnet block 12, and a base 13 that are sealed in the casing 11.
  • the electromagnet block 12 includes a spool 121, two pairs of junction terminals 123 having coil winding portions 122 exposed from opposite longitudinal sides of the spool 121, and coils 124 wound on the spool 121.
  • Each of the coils 124 has one end that is to be wound on one of the coil winding portions 122 of the corresponding pair of the junction terminals 123, and the other end that is to be wound on the other one of the coil winding portions 122 of the corresponding pair of the junction terminals 123.
  • the base 13 includes a base body 131 for accommodating the electromagnet block 12, a pair of common terminals 132 and two pairs of fixed contact terminals 133 inserted into the base body 131 and spaced apart from each other, and two pairs of coil terminals 134 connected respectively and electrically to the junction terminals 123.
  • An armature block 135 is connected electrically to the common terminals 132, and is supported pivotally by the electromagnet block 12.
  • the armature block 135 When the armature block 135 is affected by an electromagnetic field generated by the electromagnet block 12, the armature block 135 is brought into contact with the left fixed contact terminals 133, so as to establish electrical connection between the common terminals 132 and the left fixed contact terminals 133 while breaking electrical connection between the common terminals 132 and the right fixed contact terminals 133.
  • the electromagnetic relay 1 can serve as a switch unit.
  • the size of the base body 131 is relatively large in order to accommodate the entire electromagnet block 12.
  • the junction terminals 123 since there is no mechanism for fixing the electromagnet block 12 in the base body 131, it is difficult to connect the junction terminals 123 accurately to the coil terminals 134duringassembly.
  • thecommon, fixedcontact, and coil terminals 132, 133, 134 are manually welded on both sides of the base body 131, so that the electromagnetic relay 1 cannot be fabricated at a high rate.
  • EP0720194 discloses a method for manufacturing an electromagnetic relay in which a base block is monolithically molded to terminals and connector tabs provided in a lead frame. After separating the terminals from the lead frame and bending the terminals, a permanent magnet and an armature block are assembled into the base block. A case is then pressed down over the base block to separate the base block from the connector tabs of the lead frame.
  • EP0313385 describes an electromagnetic relay comprising a U-shaped core carrying an energising coil between its poles.
  • a magnet makes magnetic contact with a central part of the core, and provides at its free end a central fulcrum for an armature which is arranged to cooperate at its ends with the respective core poles.
  • the fulcrum enables a see-saw movement of the armature about a biased neutral position.
  • the document also discloses a method of assembling such an electromagnetic relay.
  • an object of the present invention is to provide an electromagnetic relay that is easy to assemble and that can be fabricated at a high rate.
  • an electromagnetic relay as defined in claim 1.
  • an electromagnetic relay of the preferred embodiment of this invention includes a casing 2 and a relay core member including an electromagnetic unit 3 and a terminal unit 4.
  • the casing 2 includes an upper casing body 21 and a bottom casing body 22 that are connected to each other by press fitting.
  • the electromagnetic unit 3 is adapted for generating an electromagnetic field, and includes a spool frame set 31 having a pair of opposite first sides (31a) and a pair of opposite second sides (31b), a coil unit 32 being wound on the spool frame set 31 and including at least one coil 32', and a pair of coil winding pins 33.
  • the spool frame set 31 includes a spool frame 310 wound with the coil unit 32, a pair of mounting frames 311, an iron core 312 attached fixedly to the spool frame 310, and a permanent magnet 313 inserted into the spool frame 310 and disposed on a middle portion of the iron core 312.
  • Each of the mounting frames 311 is disposed at and extends along a respective one of the first sides (31a) of the spool frame set 31, and has a pair of through holes 315 formed therethrough and spaced apart from each other. Further, each of the mounting frames 311 includes an outer surface formed with a groove 314.
  • Each of the coil winding pins 33 has a conductive portion 331, and a coil winding portion 332 extending along one of the second sides (31b) of the spool frame set 31.
  • Each of the conductive portions 331 has a horizontal section being exposed from one of the mounting frames 311, and a vertical section extending into a corresponding one of the through holes 315.
  • One end of each of the conductive portions 331 is aligned with an outer surface of the corresponding mounting frame 311, and the coil winding portions 332 of the coil winding pins 33 are disposedina space 316 defined by the mounting frames 311.
  • the terminal unit 4 includes an engaging block 41 configured for accommodating the electromagnetic unit 3, a terminal set 42 inserted into the engaging block 41 and exposed from the bottom casing body 22 of the casing 2, and an armature component 43 being affected by the electromagnetic field generated by the electromagnetic unit 3 and serving as a switch mechanism by cooperating with the terminal set 42.
  • the engaging block 41 includes a pair of opposite sidewalls 414 corresponding respectively to the first sides (31a) of the spool frame set 31, a pair of opposite side surfaces 415 corresponding respectively to the second sides (31b) of the spool frame set 31, a pair of barbs 411 disposed respectively on inner surfaces of the sidewalls 414, and a top surface 412 confronting the armature component 43.
  • Each of the sidewalls 414 of the engaging block 41 is formed with a pair of notches 413, and the horizontal sections of the conductive portions 331 of the coil winding pins 33 are disposed respectively within the notches 413 (see Figure 10 ).
  • Each of the barbs 411 is configured for engaging a corresponding one of the grooves 314 for preventing separation of the terminal unit 4 from the electromagnetic unit 3.
  • the terminal set 42 includes a pair of common terminals 421, two pairs of fixed contact terminals 422, and two pairs of coil terminals 423. Each of the common, fixed contact and coil terminals 421, 422, 423 is inserted into the top surface 412, and has a portion extending along a corresponding one of the side surfaces 415.
  • the engaging block 41 further includes two pairs of first welding points 424, 425 disposed on the top surface 412 thereof, and a pair of second welding points 426 disposed within the notches 413.
  • the coil terminals 423 are respectively welded to the conductive portions 331 of the coil winding pins 33 at the second welding points 426 for forming electrical connection therebetween.
  • the armature component 43 includes a middle contact portion 431 welded to the common terminals 421 at the welding points 424, 425 and supported pivotally by the spool frame set 31, and two pairs of movable contact portions 432, 433 disposed respectively at two opposite end portions of the armature component 43.
  • a method for assembling the electromagnetic relay of the present invention includes the following steps.
  • step 51 the coil winding pins 33 are inserted through the through holes 315 in one of the mounting frames 311 of the spool frame set 31, and the conductive portions 331 of the coil winding pins 33 are exposed from the through holes 315 as shown in Figure 5 .
  • step 52 one end of the coil 32' is wound on the coil winding portion 332 of one of the coil winding pins 33, and the coil 32' is wound on the spool frame 310. Thereafter, in step 53 the other end of the coil 32' is wound on the coil winding portion 332 of the other one of the coil winding pins 33.
  • the ends of the coil 32' can be fixed on the coil winding portions 332 of the coil winding pins 33 by welding with soldering tin.
  • each of the coil winding portions 332 of the coil winding pins 33 is bent upwardly and toward the corresponding one of the second sides (31b) of the spool frame set 31 as shown in Figure 7 . Therefore, the spool frame set 31, the coil unit 32, and the coil winding pins 33 are assembled together to form the electromagnetic unit 3.
  • the terminal set 42 is formed from a plate.
  • the plate is embedded partially in the engaging block 41 such that it has a plurality of plate portions 421', 422', 423' corresponding to the terminals 421, 422, 423 (see Figure 3 ), and is then bent to form the terminals 421, 422, 423 such that upper ends of the coil terminals 423 are disposed respectively in the notches 413 in the engaging block 41.
  • step 56 the electromagnetic unit 3 is inserted into the engaging block 41, and each of the grooves 314 in the mounting frames 311 of the spool frame set 31 engages a corresponding one of the barbs 411 of the engaging block 41. Therefore, the electromagnetic unit 3 and the terminal unit 4 are assembled together to form the relay core member.
  • the coil terminals 423 of the terminal set 42 are respectively in electrical contact with the conductive portions 331 of the coil winding pins 33.
  • One end of each of the conductive portions 331 of the coil winding pins 33 is aligned with the outer surface of the corresponding one of the mounting frames 311, and is disposed within the corresponding one of the notches 413.
  • the coil winding portions 332 are disposed in the space 316 between the mounting frames 311.
  • step 57 the common terminals 421 are welded to the middle contact portion 431 of the armature component 43, and the coil terminals 423 are welded to the conductive portions 331 of the coil winding pins 33 at the welding points 424, 425, 426, respectively, using laser welding method.
  • step 58 the relay core member including the electromagnetic unit 3 and the terminal unit 4 is finally sealed in the casing 2, and the terminal set 42 is exposed from the bottom casing body 22 of the casing 2.
  • each of the right movable contact portions 432 is pivoted to a connection position, where the corresponding right movable contact portion 432 is electrically connected to a corresponding one of the fixed contact terminals 422.
  • the electromagnetic field is not generated, and therefore each of the right movable contact portions 432 of the armature component 43 is biased to a disconnection position, where the corresponding right movable contact portion 432 is separated from the corresponding one of the fixed contact terminals 422.
  • the armature component 43 serves as a switch mechanism.
  • the electromagnetic unit 3 can also include two pairs of the coil winding pins 33 (not shown), so that the electromagnetic relay of this invention serves as a double-pole-double-throw (DPDT) relay to transmit two control signals.
  • DPDT double-pole-double-throw
  • the electromagnetic relay of the present invention and the method for assembling the same have the following advantages.
  • Second, the welding points 424, 425, 426 can be formed using laser welding method, such that the manufacturing process of the electromagnetic relay is relatively simple.
  • each of the barbs 411 engages a corresponding one of the grooves 314 for preventing separation of the terminal unit 4 from the electromagnetic unit 3, so that the coil terminals 423 can be connected accurately to the coil winding pins 33 during assembly of the electromagnetic relay. Therefore, an automated manufacturing process can be utilized for the electromagnetic relay of the present invention.

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

Claims (11)

  1. Un relais électromagnétique comprenant :
    un boîtier (2) ; et
    un élément de noyau de relais scellé dans ledit boîtier (2), ledit élément de noyau de relais comprenant
    une unité électromagnétique (3) adaptée pour générer un champ électromagnétique, ladite unité électromagnétique (3) comprenant un ensemble de cadre de bobine (31) qui comprend une paire de premiers côtés (31a) et une paire de second côtés (31b), une unité de bobinage (32) qui est enroulée sur ledit ensemble de cadre de bobine (31), et une paire de broches d'enroulement de bobinage (33), chacune desquelles broches d'enroulement de bobinage (33) possède une partie conductrice (331) exposée à partir d'un desdits premiers côtés (31a) et une partie d'enroulement de bobinage (332) s'étendant le long d'un desdits seconds côtés (31b), ledit ensemble de cadre de bobine (31) comprenant en outre une paire de cadres de montage (311), chacun desquels est disposé à et s'étend le long d'un côté respectif d'un desdits premiers côtés (31a) dudit ensemble de cadre de bobine (31), et
    une unité de bornes (4) qui comprend un bloc d'engagement (41) configuré pour recevoir ladite unité électromagnétique (3), un ensemble de bornes (42) exposé à partir dudit boîtier (2) et encastré partiellement dans ledit bloc d'engagement (41), et un composant d'armature (43) étant affecté par le champ électromagnétique généré par ladite unité électromagnétique (3) et servant de mécanisme de commutation en coopérant avec ledit ensemble de bornes (42) ;
    caractérisé en ce que ledit bloc d'engagement (41) comprend une paire de parois latérales (414) correspondant respectivement auxdits premiers côtés (31a) dudit ensemble de cadre de bobine (31), et une paire de barbelures (411) disposées respectivement sur lesdites parois latérales (414) ;
    en ce que chacun desdits cadres de montage (311) comprend une surface extérieure formée avec une rainure (314) configurée pour s'engager avec une barbelure correspondante desdites barbelures (411) pour empêcher la séparation de ladite unité de bornes (4) de ladite unité électromagnétique (3) ;
    en ce que ledit bloc d'engagement (41) comprend une paire d'entailles (413) ; et
    en ce que ladite partie conductrice (331) de chacune desdites broches d'enroulement de bobinage (33) est disposée à l'intérieur d'une entaille correspondante desdites entailles (413).
  2. Le relais électromagnétique selon la revendication 1, dans lequel chacun desdits cadres de montage (311) dudit ensemble de cadre de bobine (31) est formé avec une paire de trous de passage (315) formés au travers d'un cadre correspondant desdits cadres de montage (311) et espacés l'un de l'autre ; et
    chacune desdites parties conductrices (331) comprend une section horizontale étant exposée à partir d'un desdits cadres de montage (311), et une section verticale s'étendant à l'intérieur d'un trou correspondant desdits trous de passage (315).
  3. Le relais électromagnétique selon la revendication 2, dans lequel lesdites sections horizontales desdites parties conductrices (331) desdites broches d'enroulement de bobinage (33) sont disposées respectivement à l'intérieur desdites entailles (413), et lesdites parties d'enroulement de bobinage (332) desdites broches d'enroulement de bobinage (33) sont disposées dans un espace défini par lesdits cadres de montage (311).
  4. Le relais électromagnétique selon l'une quelconque des revendications de 1 à 3, dans lequel ledit bloc d'engagement (41) comprend une paire de surfaces latérales (415), et ledit ensemble de bornes (42) de ladite unité de bornes (4) comprend une paire de bornes communes (421), deux paires de bornes de contact fixes (422), et deux paires de bornes de bobinage (423), chacune desdites bornes communes, de contact fixe et de bobinage (421, 422, 423) possédant une partie qui s'étend le long d'une surface correspondante desdites surfaces latérales (415), lesdites bornes de bobinage (423) étant respectivement et électriquement connectées aux dites parties conductrices (331) desdites broches d'enroulement de bobinage (33).
  5. Le relais électromagnétique selon la revendication 4, dans lequel ledit composant d'armature (43) comprend une partie de contact centrale (431) électriquement connectée aux dites bornes communes (421) et supportée de manière pivotante par ledit ensemble de cadre de bobine (31), et une paire de parties de contact mobiles (432, 433) qui sont disposées respectivement à deux parties d'extrémité dudit composant d'armature (43), chacune desdites parties de contact mobiles (432, 433) pouvant être pivotée entre une position de connexion, où une partie correspondante desdites parties de contact mobiles (432, 433) est connectée électriquement à une borne correspondante desdites bornes de contact fixes (422), et une position de déconnexion, où la partie correspondante desdites parties de contact mobiles (432, 433) est séparée de la borne correspondante desdites bornes de contact fixes (422).
  6. Le relais électromagnétique selon la revendication 5, dans lequel ledit bloc d'engagement (41) de ladite unité de bornes (4) comprend une surface supérieure (412) possédant une pluralité de point de soudage (424, 425, 426), lesdites bornes communes (421) étant soudées à ladite partie de contact centrale (431) dudit composant d'armature (43), et lesdites bornes de bobinage (423) étant soudées aux dites parties conductrices (331) desdites broches d'enroulement de bobinage (33) auxdits points de soudage (424, 425, 426), respectivement.
  7. Le relais électromagnétique selon la revendication 6, dans lequel lesdits points de soudage (424, 425, 426) sont formés en utilisant un procédé de soudage au laser.
  8. Le relais électromagnétique selon l'une quelconque des revendications de 1 à 7, dans lequel ledit boîtier (2) comprend un corps de boîtier supérieur (21) et un corps de boîtier inférieur (22) qui sont connectés l'un à l'autre par pressage, et ledit corps de boîtier inférieur (22) est configuré en outre pour permettre audit ensemble de bornes (42) d'être exposé de celui-ci.
  9. Un procédé pour assembler un relais électromagnétique qui comprend un boîtier (2), une unité électromagnétique (3), et une unité de bornes (4), l'unité électromagnétique (3) comprenant un ensemble de cadre de bobine (31), une unité de bobinage (32), et une paire de broches d'enroulement de bobinage (33), l'unité de bornes (4) comprenant un bloc d'engagement (41), un ensemble de bornes (42) encastré dans le bloc d'engagement (41), et un composant d'armature (43) étant affecté par un champ électromagnétique généré par l'unité électromagnétique (3) et servant de mécanisme de commutation en coopérant avec l'ensemble de bornes (42), ledit procédé étant caractérisé par :
    a) insérer les broches d'enroulement de bobinage (33) respectivement au travers d'une paire de trous de passage (315) dans l'ensemble de cadre de bobine (31) à une paire de premiers côtés (31a) de l'ensemble de cadre de bobine (31) ;
    b) enrouler une extrémité de l'unité de bobinage (32) sur une des broches d'enroulement de bobinage (33) ;
    c) enrouler l'unité de bobinage (32) sur l'ensemble du cadre de bobine (31) ;
    d) enrouler l'autre extrémité de l'unité de bobinage (32) sur l'autre des broches d'enroulement de bobinage (33) ;
    e) plier chacune des broches d'enroulement de bobinage (33) vers le haut et vers un côté correspondant d'une paire de second côtés (31b) de l'ensemble de cadre de bobine (31), de telle sorte que l'ensemble de cadre de bobine (31), l'unité de bornes (32), et les broches d'enroulement de bobinage (33) sont assemblés entre eux pour former l'unité électromagnétique (3) ;
    f) insérer l'unité électromagnétique (3) dans le bloc d'engagement (41) de l'unité de bornes (4) pour permettre un engagement entre une paire de rainures (314) dans l'ensemble de cadre de bobine (31) respectivement aux premiers côtés (31a) et une paire de barbelures (411) disposées respectivement sur une paire de parois latérales (414) du bloc d'engagement (41) qui correspondent respectivement auxdits premier côtés (31a) dudit ensemble de cadre de bobine (31), de manière à assembler l'unité électromagnétique (3) et le bloc d'engagement (41) avec l'ensemble de bornes (42) en contact électrique avec les broches d'enroulement de bobinage (33) ; et
    g) sceller l'unité électromagnétique (3) et l'unité de bornes (4) dans le boîtier (2) pour former le relais électromagnétique.
  10. Le procédé selon la revendication 9, comprenant en outre une étape f1) de soudage de l'ensemble de bornes (42) au composant d'armature (43) et aux broches d'enroulement de bobinage (33) à une pluralité de points de soudage (424, 425, 426) sur une surface supérieure (412) du bloc d'engagement (41) après l'étape f).
  11. Le procédé selon la revendication 10, dans lequel dans l'étape f1), l'ensemble de bornes (42) est soudé en utilisant un procédé de soudage au laser.
EP20090160229 2009-05-14 2009-05-14 Relais électromagnétique et son procédé d'assemblage Not-in-force EP2251886B1 (fr)

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Application Number Priority Date Filing Date Title
EP20090160229 EP2251886B1 (fr) 2009-05-14 2009-05-14 Relais électromagnétique et son procédé d'assemblage

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Application Number Priority Date Filing Date Title
EP20090160229 EP2251886B1 (fr) 2009-05-14 2009-05-14 Relais électromagnétique et son procédé d'assemblage

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EP2251886A1 EP2251886A1 (fr) 2010-11-17
EP2251886B1 true EP2251886B1 (fr) 2014-04-09

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Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3338182A1 (de) * 1983-10-20 1985-05-02 Siemens AG, 1000 Berlin und 8000 München Elektromagnetische relais und verfahren zu dessen herstellung
JPH02503844A (ja) * 1987-06-16 1990-11-08 ペッド・リミテッド 電気的構成要素におけるかつそれに関する改良
US4912438A (en) 1987-10-22 1990-03-27 Nec Corporation Electromagnetic relay
JP3472881B2 (ja) * 1993-02-24 2003-12-02 オムロン株式会社 電磁継電器の製造方法
KR0182806B1 (ko) 1993-09-17 1999-05-15 다테이시 요시오 전자 계전기 및 그 제조방법
DE60017102T2 (de) * 1999-03-05 2005-12-22 Omron Corp. Elektromagnetisches relais
JP4334158B2 (ja) * 2001-03-26 2009-09-30 富士通コンポーネント株式会社 電磁継電器
JP4466506B2 (ja) * 2005-08-12 2010-05-26 オムロン株式会社 リレー

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