EP0909452A1 - Relais electromagnetique et son procede de fabrication - Google Patents

Relais electromagnetique et son procede de fabrication

Info

Publication number
EP0909452A1
EP0909452A1 EP97930312A EP97930312A EP0909452A1 EP 0909452 A1 EP0909452 A1 EP 0909452A1 EP 97930312 A EP97930312 A EP 97930312A EP 97930312 A EP97930312 A EP 97930312A EP 0909452 A1 EP0909452 A1 EP 0909452A1
Authority
EP
European Patent Office
Prior art keywords
cap
coil
relay
casting resin
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.)
Ceased
Application number
EP97930312A
Other languages
German (de)
English (en)
Inventor
Alfred Heinzl
Heinz Stadler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0909452A1 publication Critical patent/EP0909452A1/fr
Ceased legal-status Critical Current

Links

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
    • H01H50/023—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
    • H01H50/026—Details concerning isolation between driving and switching circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H2001/5888—Terminals of surface mounted devices [SMD]

Definitions

  • the invention relates to an electromagnetic relay, which has a coil with a winding and a core
  • Anchor and a contact system actuated by the armature wherein the coil is arranged in a trough-shaped housing cap closest to the - top - cap bottom and fastened with solidified resin, while the armature and the contact system are below the coil near the open side of the cap are located.
  • the invention also relates to a method for producing such a relay.
  • a relay with the structure generally specified above is known for example from DE 26 22 133 AI.
  • the relay system is arranged in a two-part housing, the two housing parts being interleaved in such a way that the edge of the inner housing part is immersed in a casting compound covering the bottom of the outer housing part. This seals the gap between the two housing parts.
  • the potting compound can also be used to fix the magnet system there.
  • the aim of the present invention is to eliminate the contact-damaging outgassing from the coil with respect to the contacts in relays of the type mentioned at the outset without changing the construction by a simple and inexpensive measure.
  • the casting resin at least completely encloses the coil winding within the cap.
  • a method according to the invention for producing such a relay is accordingly that the cap is fed with its opening upwards in the production process and filled with a predetermined amount of liquid casting resin, that then a preassembled assembly containing the coil with the coil down into the Cap is inserted and pressed onto the cap bottom, with the casting resin completely flowing around the coil, and that finally the casting resin is cured.
  • the cap is turned over and filled with liquid casting resin to such an extent that in the magnetic system then used in reverse from above, the coil is completely in the casting resin immersed.
  • This process can be carried out in the normal production line so that the relays do not have to be removed from the line.
  • the hardening of the casting resin required here also takes at most a few hours, so that the total throughput time of the relay in the production line is reduced to a fraction of the time previously required, for example from 30 hours to less than 5 hours.
  • the casting of the coil within the cap which is proposed according to the invention, not only isolates the winding from the contact system, but also prevents any outgassing which is damaging to the contact.
  • Cap with the coil encapsulated in it receives a high mechanical stability and also a high thermal resistance. This is particularly important for miniature relays, as mentioned at the beginning, since their small air gap and contact distances are very sensitive to warping of the system. With the design according to the invention, such relays can therefore also be provided with connections for surface mounting (SMT) or also for press-in technology.
  • SMT surface mounting
  • the cap and / or a base can be designed in such a way that the cast resin enveloping the winding additionally or completely seals the remaining housing gaps in the base area by capillary action, so that an additional sealing process may be unnecessary.
  • FIG. 1 shows the assembly of a relay system with a cap according to the invention in five stages of the process, stage la being a fully assembled relay system in front view, stage lb a cap in section, stage lc an inverted cap partially filled with casting resin, stage ld the
  • FIG. 2 shows a cap provided with capillary channels
  • FIG. 3 shows a cap according to FIG. 2 with the magnet system inserted
  • Figure 4 is a representation similar to Figure 3, but with a modified base.
  • the relays shown in the drawing are only shown schematically.
  • the structure of the relay system in detail which is not decisive for the present invention, results for example from WO 94/22156 AI.
  • the relay system is first assembled in a known manner. Such is shown in FIG. 1,
  • Relay system basically shown in a front view, a coil body 1 serving as the base body carrying a winding 2 and an axially arranged core 3.
  • a permanent magnet 4 which is only visible in FIG. 1, is arranged below the winding and lies between two yoke legs 5 and interacts with an armature 6.
  • the armature carries contact springs, not shown here, which in turn interacts with fixed contacts, likewise not visible, in a base 7. From the relay system go down pins 8 for the contacts and the coil winding.
  • a cap 9 molded from plastic according to FIG. 1b is fed. This is turned over according to FIG. 1c so that the cap bottom 9a, which in itself forms the upper end wall of the relay, lies at the bottom and a predetermined amount of liquid casting resin 10 can be filled into the cap.
  • the reversed relay system according to FIG. 1a is then inserted into this cap from above and pressed in with a suitable device in the direction of arrow 11 until the casting resin
  • Coil winding has completely flowed u. This state is shown in the sectional view of Figure le. In this position, the casting resin is cured, for example, by placing it under the appropriate heat. The gap 12 between the cap 9 and the base 7 can be sealed subsequently or at the same time. As indicated in Figure le also with dashed lines is. The pins 8 can also be angled so that they form SMT connectors 8a.
  • FIG. 3 shows a somewhat modified housing cap 19, in which capillary channels 20, which are distributed over the circumference and perpendicular to the bottom, are formed.
  • the casting resin 10 flows upward through the channels 20 by capillary action and seals the housing gap 21 between the cap 19 and a base 17.
  • the capillary channels can also be provided only in the housing corners, which is not shown in detail.
  • FIG. 5 A further modification is shown in FIG. 5.
  • a base 27 is used which, with a circumferential edge 28, dips into the casting resin 10 enveloping the winding.
  • a capillary gap 30 is thus formed between the edge 28 and the cap 29, through which the casting resin is sucked upward and thus seals the housing gap.
  • further capillary channels 31 are provided on the outside of the base, which the casting resin to push-through openings 32 for
  • Lead coil connector pins 33 or to other socket openings In this way, it is possible to completely seal the relay housing by inserting the magnet system and the base.

Landscapes

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

Abstract

Une fois le système du relais monté, le couvercle n'est pas posé de haut en bas, mais amené avec le fond (9a) du couvercle en bas et rempli d'une quantité prédéterminée de résine de coulée liquide (10). Le système du relais est ensuite pressé dans le couvercle avec l'enroulement (2) de la bobine en avant, de sorte que la résine de coulée (10) imprègne entièrement l'enroulement de la bobine. Une fois la résine durcie, l'enroulement de la bobine est complètement isolé du système de contact, ce qui prévient toute fuite de gaz pouvant endommager les contacts. On confère en même temps une haute résistance thermique et une haute stabilité mécanique à l'ensemble du système, ce qui permet d'utiliser également des raccords montés en surface ou des broches insérées par compression comme raccords du relais.
EP97930312A 1996-07-04 1997-06-12 Relais electromagnetique et son procede de fabrication Ceased EP0909452A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19626982 1996-07-04
DE1996126982 DE19626982C1 (de) 1996-07-04 1996-07-04 Elektromagnetisches Relais und Verfahren zu dessen Herstellung
PCT/DE1997/001196 WO1998001879A1 (fr) 1996-07-04 1997-06-12 Relais electromagnetique et son procede de fabrication

Publications (1)

Publication Number Publication Date
EP0909452A1 true EP0909452A1 (fr) 1999-04-21

Family

ID=7798935

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97930312A Ceased EP0909452A1 (fr) 1996-07-04 1997-06-12 Relais electromagnetique et son procede de fabrication

Country Status (4)

Country Link
EP (1) EP0909452A1 (fr)
JP (1) JP2000513866A (fr)
DE (1) DE19626982C1 (fr)
WO (1) WO1998001879A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7393682B1 (en) 1993-03-19 2008-07-01 The Johns Hopkins University School Of Medicine Polynucleotides encoding promyostatin polypeptides
US6891082B2 (en) 1997-08-01 2005-05-10 The Johns Hopkins University School Of Medicine Transgenic non-human animals expressing a truncated activintype II receptor
DE19917338C2 (de) * 1999-04-16 2002-05-08 Tyco Electronics Logistics Ag Elektromagnetisches Relais und Verfahren zu dessen Herstellung
JP4366812B2 (ja) * 2000-02-22 2009-11-18 オムロン株式会社 電源回路遮断用リレーユニットおよびそのリレーユニットケース
KR101182684B1 (ko) 2010-08-19 2012-09-17 한국단자공업 주식회사 전자식릴레이
US9561274B2 (en) 2011-06-07 2017-02-07 University Of Hawaii Treatment and prevention of cancer with HMGB1 antagonists
WO2012170740A2 (fr) 2011-06-07 2012-12-13 University Of Hawaii Biomarqueur d'exposition à l'amiante et mésothéliome

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2845585A (en) * 1957-04-12 1958-07-29 Controls Co Of America Encapsulated relay
FR1598789A (fr) * 1968-12-27 1970-07-06
DE2622133A1 (de) * 1976-05-18 1977-12-08 Siemens Ag Elektrisches bauelement, insbesondere elektromagnetisches relais
FR2622739B1 (fr) * 1987-11-03 1990-01-19 Serd Soc Et Realisa Disjonct Declencheur magnetique et procede de fabrication
CA2158978A1 (fr) * 1993-03-24 1994-09-29 Heinz Stadler Relais electromagnetique polarise

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9801879A1 *

Also Published As

Publication number Publication date
WO1998001879A1 (fr) 1998-01-15
JP2000513866A (ja) 2000-10-17
DE19626982C1 (de) 1997-09-25

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