EP0909452A1 - Relais electromagnetique et son procede de fabrication - Google Patents
Relais electromagnetique et son procede de fabricationInfo
- 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
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.
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)
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)
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 |
-
1996
- 1996-07-04 DE DE1996126982 patent/DE19626982C1/de not_active Expired - Fee Related
-
1997
- 1997-06-12 EP EP97930312A patent/EP0909452A1/fr not_active Ceased
- 1997-06-12 WO PCT/DE1997/001196 patent/WO1998001879A1/fr not_active Application Discontinuation
- 1997-06-12 JP JP10504634A patent/JP2000513866A/ja active Pending
Non-Patent Citations (1)
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19981217 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): CH DE LI |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
17Q | First examination report despatched |
Effective date: 19990531 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
|
18R | Application refused |
Effective date: 19991129 |