EP0727089B1 - Composant electromecanique, en particulier relais, avec boitier etanche - Google Patents

Composant electromecanique, en particulier relais, avec boitier etanche Download PDF

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Publication number
EP0727089B1
EP0727089B1 EP95900056A EP95900056A EP0727089B1 EP 0727089 B1 EP0727089 B1 EP 0727089B1 EP 95900056 A EP95900056 A EP 95900056A EP 95900056 A EP95900056 A EP 95900056A EP 0727089 B1 EP0727089 B1 EP 0727089B1
Authority
EP
European Patent Office
Prior art keywords
base
elastomer
cap
component according
edge
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
EP95900056A
Other languages
German (de)
English (en)
Other versions
EP0727089A1 (fr
Inventor
Lutz Kahlbau
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 EP0727089A1 publication Critical patent/EP0727089A1/fr
Application granted granted Critical
Publication of EP0727089B1 publication Critical patent/EP0727089B1/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
    • H01H50/02—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
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H2011/0081—Apparatus or processes specially adapted for the manufacture of electric switches using double shot moulding, e.g. for forming elastomeric sealing elements on form stable casing

Definitions

  • the invention relates to an electromechanical component, in particular a relay, with a housing formed from a base and a cap, the base consisting of plastic having openings in which connection elements are anchored and sealed by insertion.
  • DE 25 56 610 B2 describes a base body made of insulating material for hermetically sealable relays, a base body made of thermosetting plastic being overmolded with a jacket made of thermoplastic material.
  • the connection elements are embedded in the thermosetting base body there, which already requires a complex manufacturing process.
  • an additional operation is proposed there, with which the parts are to be glued or welded.
  • the aim of the present invention is to design a component of the type mentioned at the outset in such a way that sealing of the housing gaps and bushings, in particular on the connecting elements fastened by insertion, is achieved in a very simple and economical manner.
  • this goal is achieved in that the base consisting of a dimensionally stable plastic at least is coated in the wall areas of the openings with a layer of a thermoplastic elastomer and that the connection elements have a larger cross section than the remaining width of the respective opening in such a way that they are anchored in a sealing manner by insertion with a press fit.
  • two plastic materials with different properties are therefore used at least for the base body or base carrying the connecting parts.
  • the plastic with the higher strength for example a mineral or glass fiber reinforced thermoplastic, such as polyamide, gives the shape stability, while the second material, namely a thermoplastic elastomer, such as. B. polyurethane, the sealing function.
  • the dimensionally stable plastic could also be a thermoset, but because of the more economical processing, it is more economical to use two thermoplastics with different properties, since both materials can then be molded one after the other on one and the same machine in a two-component injection molding process. Since the sealing function is thus already integrated through the production of the base body or base with two plastic components, no additional assembly and sealing effort is required after the parts have been put together. The tolerance of the parts to be joined is compensated for by the elastomer, so that an interference fit is always guaranteed.
  • the inventive lining of the bushings for the connection elements results in a large-area sealing over the entire bushing length.
  • the seal is particularly advantageous and reliable when the elastomer layer encompasses both edges of the base openings in the manner of a spout.
  • the elastomer layer in the area of the edge of the respective Socket opening on the outside of the housing forms an additional circumferential sealing lip.
  • the two plastic components will more or less bond to each other at their interfaces. Since the sealing is done by a press fit, this is not even necessary. It is therefore possible to use two incompatible plastics which do not bond to one another when molded; this applies in particular if the elastomer is positively connected to the base or base body, for example in the manner of the grommet mentioned.
  • the base or the cap is also provided with a layer of the elastomer.
  • the cap can also be made of metal, in which case the sealing function between plastic and metal is effective in the same way as on the metallic connecting elements.
  • the cap will also consist of plastic, so that the second component formed from elastomer for sealing the edge gap can be attached either to the base or to the cap.
  • the seal becomes particularly reliable when the base forms a circumferential sealing edge which is covered with a U-shaped elastomer layer in profile and engages in a circumferential groove in the cap.
  • the elastomer layer can form one or more circumferential sealing ribs projecting into the edge gap.
  • the elastomer coating only needs to be provided in the area of the points to be sealed, so that the elastomer only needs to be injected in the form of an island at these points.
  • connections can be designed in the form of webs which either lie in recessed channels in the base or can run as raised webs on the surface thereof.
  • a relay base 1 which, together with a cap 2, forms a housing which accommodates a relay system 3, which is indicated schematically in FIG.
  • This relay system 3 can be designed, for example, according to DE 34 28 595 C2.
  • the base shown in Figures 1 to 3 alone has openings 4 for pins 11 (see Figure 5), which are designed in the present case as a flat connector; accordingly, the bushings are rectangular.
  • the base has a stepped, all-round sealing edge 5.
  • the base itself consists of a dimensionally stable plastic, for example a glass fiber reinforced polyamide.
  • the inner walls 4a of the openings 4 are each covered with a layer 6 covered with an elastomer; polyurethane or a thermoplastic with similar properties can be considered as the material.
  • the ends of the elastomer layer 6 each extend over the edge of the opening 4 with a widened edge 7 in the form of a grommet.
  • the elastomer layer additionally forms a circumferential sealing lip 8.
  • the sealing edge 5 of the base 1 is also covered with an elastomer layer 9 which surrounds the edge 5 in a U-shaped profile on three sides. Two circumferential sealing ribs 10 are also formed on this elastomer layer 9.
  • Figures 4 to 6 show the same views as Figures 1 to 3, but now with the relay fully assembled, that is, with the cap 2 attached and with the relay system 3.
  • the pins 11 are pressed into the openings 4, due to an excess in Cross section or the width 12 of the pins 11 is penetrated with the elastomer layer 6, which leads to a press fit and a corresponding sealing of the pins 11.
  • the outwardly deformed sealing lips 8 nestle closely against the connecting pins 11.
  • the sealing edge 5 engages in a circumferential groove 13 and also forms a press fit for sealing the circumferential edge gap 15.
  • the sealing is thereby improved by the sealing ribs 10 acting in two mutually perpendicular directions.
  • connecting webs 14 are also indicated, which arise through flow channels in the injection mold. It is therefore elastomer webs that connect the different elastomer layers 6 and 9 in the form of recessed or raised webs, so that the number of injections in the injection mold can be lower. These connecting webs 14 can run on the inside of the housing and / or on the outside of the housing of the base 1.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Casings For Electric Apparatus (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Claims (8)

  1. Composant électromécanique, en particulier relais, avec un boîtier formé d'un socle (1) et d'un couvercle (2), le socle composé de matière synthétique présentant des percements (4), dans lesquels des éléments de raccordement (11) sont scellés et rendus étanches par insertion, caractérisé en ce que le socle (1) composé d'une matière synthétique indéformable est recouvert, au moins dans les zones de paroi (4a) des percements (4), d'une couche (6) d'un élastomère thermoplastique et en ce que les éléments de raccordement (11) présentent une section transversale (12) plus grande par rapport à l'étendue résiduaire du percement respectif, de sorte qu'ils sont scellés de façon étanche par l'insertion avec ajustage serré.
  2. Composant selon la revendication 1, caractérisé en ce que la couche élastomère (6) entoure avec une bordure (7) élargie les bordures des percements (4) du socle à la manière d'une douille.
  3. Composant selon les revendications 1 ou 2, caractérisé en ce que la couche élastomère (6) forme une lèvre d'étanchéité (8) périphérique dans la zone de la bordure du percement (4) de socle respectif, sur le côté extérieur du boîtier.
  4. Composant selon l'une des revendications 1 à 3, caractérisé en ce que dans la zone d'une fente marginale (15) située entre le socle et le couvercle, le socle ou le couvercle est également pourvu à chaque fois d'une couche (9) d'élastomère.
  5. Composant selon la revendication 4, caractérisé en ce que le socle (1) forme une bordure d'étanchéité (5) périphérique, qui est recouverte d'une couche d'élastomère (9) ayant un profil en forme de U et s'engage dans une rainure (13) périphérique du couvercle (2) ou inversement.
  6. Composant selon les revendications 4 ou 5, caractérisé en ce que la couche d'élastomère (9) forme une ou plusieurs nervure(s) d'étanchéité (10) périphérique(s), faisant saillie dans la fente marginale.
  7. Composant selon l'une des revendications 1 à 6, caractérisé en ce que le socle (1) comportant le revêtement d'élastomère est obtenu par extrusion de plusieurs composants dans un procédé de moulage par injection.
  8. Composant selon l'une des revendications 1 à 7, caractérisé en ce que les revêtements d'élastomère (6, 9) de plusieurs percements (4) sont reliés entre eux respectivement au niveau de la bordure d'étanchéité (5) au moyen de barrettes de liaison (14) en matière élastomère.
EP95900056A 1993-11-03 1994-11-02 Composant electromecanique, en particulier relais, avec boitier etanche Expired - Lifetime EP0727089B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4337505 1993-11-03
DE4337505A DE4337505C1 (de) 1993-11-03 1993-11-03 Elektromechanisches Bauelement, insbesondere Relais, mit dichtem Gehäuse
PCT/DE1994/001289 WO1995012890A1 (fr) 1993-11-03 1994-11-02 Composant electromecanique, en particulier relais, avec boitier etanche

Publications (2)

Publication Number Publication Date
EP0727089A1 EP0727089A1 (fr) 1996-08-21
EP0727089B1 true EP0727089B1 (fr) 1997-05-14

Family

ID=6501692

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95900056A Expired - Lifetime EP0727089B1 (fr) 1993-11-03 1994-11-02 Composant electromecanique, en particulier relais, avec boitier etanche

Country Status (8)

Country Link
US (1) US5699899A (fr)
EP (1) EP0727089B1 (fr)
JP (1) JPH09504639A (fr)
AT (1) ATE153175T1 (fr)
CA (1) CA2175592A1 (fr)
CZ (1) CZ121596A3 (fr)
DE (2) DE4337505C1 (fr)
WO (1) WO1995012890A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0830701B1 (fr) * 1995-06-09 1998-11-18 Siemens Aktiengesellschaft Disposition d'un relais sur un socle a fiches
DE29618878U1 (de) * 1996-10-30 1996-12-19 Rehau Ag & Co Wärmetauscher
DE19753364C2 (de) * 1997-12-02 2001-03-29 Legrand Gmbh Temperaturregelvorrichtung mit einem Steuerprozessor
US6040539A (en) * 1998-01-08 2000-03-21 Hiegel; Todd N. Protective cover for a computer mouse
JP4312350B2 (ja) * 2000-06-06 2009-08-12 ウチヤ・サーモスタット株式会社 サーマルプロテクタ
DE102007012296A1 (de) * 2007-03-08 2008-09-11 Siemens Ag Trennschalteinrichtung sowie Verfahren zur Herstellung einer Trennschalteinrichtung
DE102015225099A1 (de) * 2015-12-14 2017-06-14 Robert Bosch Gmbh Elektronikmodul, insbesondere für Getriebesteuergerät, und Verfahren zum Fertigen eines solchen
RU189249U1 (ru) * 2019-03-25 2019-05-17 Открытое акционерное общество "Объединенные электротехнические заводы" Основание электромагнитного штепсельного реле железнодорожной автоматики

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3323199A (en) * 1962-12-20 1967-06-06 Bell Telephone Labor Inc Method for making electrical components
DE2320617A1 (de) * 1973-04-24 1974-11-14 Deutsche Fernsprecher Gmbh Hermetisch abgedichtetes relais
DE2556610C3 (de) * 1975-12-16 1985-11-21 Sauer, Hans, 8024 Deisenhofen Aus duroplastischem und thermoplastischem Isolierstoff bestehender Grundkörper für hermetisch abdichtbare Relais
DE2617633A1 (de) * 1976-04-22 1977-11-03 Telefonbau & Normalzeit Gmbh Anordnung fuer elektromechanische bauteile
AT369610B (de) * 1981-03-25 1983-01-25 Schrack Elektronik Ag Gehaeuse fuer elektrotechnische bauteile
DE3319329C2 (de) * 1983-05-27 1985-05-30 Haller-Relais GmbH, 7209 Wehingen Relais mit waschdichter Bodenplatte
US4622739A (en) * 1983-12-27 1986-11-18 Texas Instruments Incorporated Method of providing an improved seal for thermostatic switch housings
DE3428595A1 (de) * 1984-08-02 1986-02-20 Siemens AG, 1000 Berlin und 8000 München Elektromagnetisches relais
DE8631911U1 (fr) * 1986-11-28 1989-04-06 Alois Zettler Elektrotechnische Fabrik Gmbh, 8000 Muenchen, De
US4780578A (en) * 1987-12-11 1988-10-25 Oak Industries, Inc. Anerobic sealed rotary switch
US4975545A (en) * 1988-07-20 1990-12-04 Wickes Manufacturing Company Sealed relay assembly
DE4015115A1 (de) * 1990-05-11 1991-11-14 Eberle Gmbh Elektronisches oder elektromechanisches bauelement z. b. relais
DE9011111U1 (fr) * 1990-07-27 1991-11-21 Siemens Ag, 8000 Muenchen, De
DE4212068C1 (fr) * 1992-04-10 1993-04-29 Hella Kg Hueck & Co, 4780 Lippstadt, De

Also Published As

Publication number Publication date
EP0727089A1 (fr) 1996-08-21
CA2175592A1 (fr) 1995-05-11
US5699899A (en) 1997-12-23
CZ121596A3 (en) 1997-12-17
ATE153175T1 (de) 1997-05-15
DE4337505C1 (de) 1995-03-30
JPH09504639A (ja) 1997-05-06
WO1995012890A1 (fr) 1995-05-11
DE59402780D1 (de) 1997-06-19

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