EP0039869A1 - Casing for an electrical component - Google Patents

Casing for an electrical component Download PDF

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Publication number
EP0039869A1
EP0039869A1 EP81103354A EP81103354A EP0039869A1 EP 0039869 A1 EP0039869 A1 EP 0039869A1 EP 81103354 A EP81103354 A EP 81103354A EP 81103354 A EP81103354 A EP 81103354A EP 0039869 A1 EP0039869 A1 EP 0039869A1
Authority
EP
European Patent Office
Prior art keywords
housing
cover
housing according
permeable
gas
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.)
Withdrawn
Application number
EP81103354A
Other languages
German (de)
French (fr)
Inventor
Konrad Ing.-Grad. Lösch
Peter Dr. Ing. Kupec
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 EP0039869A1 publication Critical patent/EP0039869A1/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
    • H01H9/047—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings provided with venting means
    • 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
    • H01H50/12—Ventilating; Cooling; Heating

Landscapes

  • Laminated Bodies (AREA)
  • Casings For Electric Apparatus (AREA)

Abstract

In the casing for a relay or other strip element, an increased concentration of harmful gas is avoided in that a part of the casing wall is permeable to gases, but is kept impermeable to liquids. For this purpose, the casing wall can contain holes which are covered on the inner side with a porous film. <IMAGE>

Description

Die Erfindung bezieht sich auf ein Gehäuse für ein elektrisches Bauelement, insbesondere für ein Relais, mit gegen das Eindringen von Flüssigkeiten abgedichteten Gehäusewänden.The invention relates to a housing for an electrical component, in particular for a relay, with housing walls sealed against the ingress of liquids.

Elektrische Bauelemente, welche auf Leiterplatten gelötet werden, müssen nach dem Lötvorgang jeweils mit den Leiterplatten gewaschen werden, damit die Flußmittelreste gelöst werden. Diesen Waschvorgang müssen auch elektromechanische Bauelemente, also insbesondere Relais, ohne Beeinträchtigung ihrer Funktion überstehen; zu diesem Zweck werden die Bauelemente abgedichtet, selbst wenn dies für ihren sonstigen Einsatz nicht erforderlich wäre. Im Gegensatz zu Relais mit hermetisch geschützten Kontakten sind bei solchen Bauelementen oft die Kontakte nicht von der Spulenwicklung getrennt, so daß sich in dem abgedichteten Gehäuse erhöhte Konzentrationen von Gasen und Dämpfen-bilden. Vielfach sind diese Gaskonzentrationen auch die Folge von Lichtbögen, die bei größerer Kontaktbelastung entstehen. Aus diesen Gründen besteht in derartigen abgedichteten Bauelementen die Gefahr, daß Metallteile korrodieren und daß sich widerstandserhöhende Schichten auf den Kontakten bilden.Electrical components that are soldered to printed circuit boards must be washed with the printed circuit boards after the soldering process so that the flux residues are detached. This washing process must also survive electromechanical components, in particular relays, without impairing their function; For this purpose, the components are sealed, even if this would not be necessary for their other use. In contrast to relays with hermetically protected contacts, the contacts in such components are often not separated from the coil winding, so that increased concentrations of gases and vapors form in the sealed housing. In many cases, these gas concentrations are also the result of arcing, which occurs when there is a greater contact load. For these reasons, there is a risk in such sealed components that metal parts corrode and that resistance-increasing layers form on the contacts.

Aufgabe der Erfindung ist es, ein waschdichtes Gehäuse für Relais und andere Bauelemente zu schaffen, bei dem solche unerwünschten Gaskonzentrationen vermieden werden. Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß die Gehäusewände zumindest teilweise aus einem gasdurchlässigen, aber flüssigkeitsdichten Material gebildet sind.The object of the invention is to provide a wash-tight housing for relays and other components in which such undesirable gas concentrations are avoided. According to the invention, this object is achieved in that the housing walls are at least partially formed from a gas-permeable but liquid-tight material.

Durch die erfindungsgemäße Ausbildung der Gehäusewände oder von Teilen dieser Gehäusewände mit einem atmungsaktiven Material wird einerseits die Waschfähigkeit dieser Bauelemente erhalten und andererseits der Gasaustausch zwischen dem Gehäuseinneren und der umgebenden Atmosphäre vor und nach dem Waschen gewährleistet. Die Anwendung der Erfindung kann in der Weise erfolgen, daß das Gehäuse Durchbrüche aufweist, welche mittels Abdeckfolien aus dem gasdurchlässigen und flüssigkeitsdichten .Material verschlossen sind.. Da diese Abdeckfolien im allgemeinen sehr empfindlich gegen mechanische Beanspruchung sind, werden sie zweckmäßigerweise auf der Gehäuseinnenseite aufgebracht. Die Verbindung der Abdeckfolie mit der Gehäusewand kann beispielsweise durch HeiBsiegeln erfolgen.The inventive design of the housing walls or parts of these housing walls with a breathable material on the one hand maintains the washability of these components and on the other hand ensures gas exchange between the interior of the housing and the surrounding atmosphere before and after washing. The invention can be applied in such a way that the housing has openings which are closed by means of cover foils made of the gas-permeable and liquid-tight material. Since these cover foils are generally very sensitive to mechanical stress, they are expediently applied to the inside of the housing. The cover film can be connected to the housing wall, for example, by heat sealing.

In einer-vorteilhaften Ausführungsform der Erfindung wird als Material für die Gehäusewände bzw. für die Abdeckfolien ein mit Polytetrafluorethylen (PTFE) gebildetes Molekularsieb verwendet. Dabei kann das PTFE als poröse Oberflächenschicht auf einem Trägervlies aufgebracht sein. Ein zweckmäßiger Träger für diese Anwendung ist ein Vlies aus Polypropylen (PP), Polyethylen (PE), Polyester (PETP) etc. Ein mit PTFE beschichtetes Vlies dieser Art ist beispielsweise unter dem Handelsnamen "Gore-Tex" bekannt.In an advantageous embodiment of the invention, a molecular sieve formed with polytetrafluoroethylene (PTFE) is used as the material for the housing walls or for the cover foils. The PTFE can be applied as a porous surface layer on a carrier fleece. A suitable carrier for this application is a fleece made of polypropylene (PP), polyethylene (PE), polyester (PETP) etc. A fleece of this type coated with PTFE is known, for example, under the trade name "Gore-Tex".

Die Erfindung wird nachfolgend an einem Ausführungsbeispiel anhand der Zeichnung näher erläutert.The invention is explained in more detail using an exemplary embodiment with reference to the drawing.

Es zeigt

  • Fig. 1 ein abgedichtetes Relaisgehäuse im Schnitt,
  • Fig. 2 einen vergrößerten Detailschnitt durch den Gehäusedeckel.
It shows
  • 1 is a sealed relay housing in section,
  • Fig. 2 shows an enlarged detail section through the housing cover.

In der Fig. 1 ist ein Relaisgehäuse 1 mit einem nicht näher dargestellten Relaissystem 2 gezeigt. Die Anschlußstifte 3 sind dicht durch das Gehäuse 1 geführt, während dieses Gehäuse auf seiner Oberseite mit einem Deckel 4 verschlossen ist. Der Rand 5 zwischen Deckel 4 und Gehäuse 1 ist abgedichtet, so daß das gesamte Gehäuse auf eine Leiterplatte gesetzt und mit dieser gewaschen werden kann.In Fig. 1, a relay housing 1 is shown with a relay system 2, not shown. The An locking pins 3 are tightly guided through the housing 1, while this housing is closed on its upper side with a cover 4. The edge 5 between cover 4 and housing 1 is sealed so that the entire housing can be placed on a printed circuit board and washed with it.

Um im Gehäuseinneren unerwünschte Konzentrationen schädlicher Gase zu vermeiden,. besitzt der Deckel 4 Durchbrüche 6, welche auf der Innenseite mit einer Abdeckfolie 7 verschlossen sind. Diese Abdeckfolie 7 besteht aus einem porösen, jedoch flüssigkeitsdichten Material. Das bedeutet, daß beispielsweise Wasser erst bei einem hohen Überdruck durch die Folie hindurchtreten kann.In order to avoid undesirable concentrations of harmful gases inside the housing. The cover 4 has openings 6, which are closed on the inside with a cover film 7. This cover sheet 7 consists of a porous, but liquid-tight material. This means that, for example, water can only pass through the film at a high overpressure.

Der Detailausschnitt in Fig. 2 zeigt in vergrößertem Schnitt den Deckel 4 und die Abdeckfolie 7. Die Abdeckfolie 7 besteht im wesentlichen aus der porösen Schicht 8, die beispielsweise aus Polytetrafluorethylen gebildet ist.. Zur Verbesserung der mechanischen Eigenschaften dieser porösen PTFE-Folie ist sie auf einen Träger 9 aufkaschiert, welches ein Polyestervlies sein kann. Die Abdeckfolie 7 ist durch Heißsiegeln mit dem Deckel 4 verbunden und verschließt somit waschdicht die Deckeldurchbrüche 6.The detail section in FIG. 2 shows the cover 4 and the cover film 7 in an enlarged section. The cover film 7 essentially consists of the porous layer 8, which is formed, for example, from polytetrafluoroethylene. To improve the mechanical properties of this porous PTFE film, it is laminated onto a carrier 9, which can be a polyester fleece. The cover film 7 is connected to the cover 4 by heat sealing and thus closes the cover openings 6 in a wash-tight manner.

Claims (7)

1. Gehäuse für ein elektrisches Bauelement, insbesondere für ein Relais, mit gegen das Eindringen von Flüssigkeiten abgedichteten Gehäusewänden, dadurch gekennzeichnet , daß die Gehäusewände (4) zumindest teilweise aus einem gasdurchlässigen, aber flüssigkeitsdichten Material (7) gebildet sind.1. Housing for an electrical component, in particular for a relay, with housing walls sealed against the ingress of liquids, characterized in that the housing walls (4) are at least partially formed from a gas-permeable but liquid-tight material (7). 2. Gehäuse nach Anspruch 1, dadurch gekennzeichnet , daß die Gehäusewände (4) Durchbrüche (6) aufweisen, welche mittels Abdeckfolien (7) aus gasdurchlässigem und flüssigkeitsdichtem Material verschlossen sind.2. Housing according to claim 1, characterized in that the housing walls (4) have openings (6) which are closed by means of cover foils (7) made of gas-permeable and liquid-tight material. 3. Gehäuse nach Anspruch 2, dadurch gekennzeichnet , daß die Abdeckfolien (7) auf der Gehäuseinnenseite aufgebracht sind.3. Housing according to claim 2, characterized in that the cover films (7) are applied to the inside of the housing. 4. Gehäuse nach Anspruch 2 oder 3, dadurch gekennzeichnet , daß die Abdeckfolien (7) durch Heißsiegeln mit der Gehäusewand (4) verbunden sind.4. Housing according to claim 2 or 3, characterized in that the cover films (7) are connected by heat sealing to the housing wall (4). 5. Gehäuse nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet , daß als gasdurchlässiges Material ein mit Polytetrafluorethylen gebildetes Molekularsieb (8) verwendet ist.5. Housing according to one of claims 1 to 4, characterized in that a molecular sieve (8) formed with polytetrafluoroethylene is used as the gas-permeable material. 6. Gehäuse nach Anspruch 5, dadurch gekennzeichnet , daß das Polytetrafluorethylen als poröse Oberflächenschicht (8) auf ein Trägervlies (9) aufkaschiert ist.6. Housing according to claim 5, characterized in that the polytetrafluoroethylene is laminated as a porous surface layer (8) on a carrier fleece (9). 7. Gehäuse nach Anspruch 6, dadurch gekennzeichnet , daß als Träger (9) ein Vlies aus Polypropylen (PP), Polyethylen (PE), Polyester (PETP) oder dgl. verwendet ist.7. Housing according to claim 6, characterized in that a fleece made of polypropylene (PP), polyethylene (PE), polyester (PETP) or the like is used as the carrier (9).
EP81103354A 1980-05-09 1981-05-04 Casing for an electrical component Withdrawn EP0039869A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3017874 1980-05-09
DE19803017874 DE3017874A1 (en) 1980-05-09 1980-05-09 HOUSING FOR AN ELECTRICAL COMPONENT

Publications (1)

Publication Number Publication Date
EP0039869A1 true EP0039869A1 (en) 1981-11-18

Family

ID=6102041

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81103354A Withdrawn EP0039869A1 (en) 1980-05-09 1981-05-04 Casing for an electrical component

Country Status (5)

Country Link
EP (1) EP0039869A1 (en)
JP (1) JPS575231A (en)
BR (1) BR8102830A (en)
DE (1) DE3017874A1 (en)
PT (1) PT72974B (en)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0215667A2 (en) * 1985-09-17 1987-03-25 RAYCHEM CORPORATION (a Delaware corporation) Vent hole assembly
FR2631158A1 (en) * 1988-05-07 1989-11-10 Bosch Gmbh Robert PRESSURE BALANCING ELEMENT FOR ELECTRICAL SWITCHING APPARATUS, PARTICULARLY USED IN THE CONSTRUCTION OF MOTOR VEHICLES
FR2631736A1 (en) * 1988-05-20 1989-11-24 Bosch Gmbh Robert PRESSURE COMPENSATING ELEMENT FOR AN ELECTRICAL DISTRIBUTION APPARATUS
US5248848A (en) * 1989-05-22 1993-09-28 Motorola, Inc. Reflow compatible device package
EP0862354A2 (en) * 1997-02-28 1998-09-02 TEMIC TELEFUNKEN microelectronic GmbH Closing device for pressure equalising apertures
ES2127661A1 (en) * 1995-06-06 1999-04-16 Itw Fastex Italia Spa Process for producing a leaktight seal against a fluid of an electromechanical component and sealed component thus obtained, specifically for domestic electrical appliances
WO2000072344A1 (en) * 1999-05-21 2000-11-30 Albert Ackermann Gmbh + Co. Kg Bed control unit for use in the field of nursing care
EP1024034A3 (en) * 1999-01-29 2003-11-12 Eaton Corporation Pressure sensor housing
WO2010000825A1 (en) * 2008-07-03 2010-01-07 Robert Bosch Gmbh Starter relay and corresponding starting apparatus having a starter relay
US8281951B2 (en) 2009-10-15 2012-10-09 Leviton Manufacturing Co., Inc. Electrical component enclosure
US8324761B2 (en) 2009-11-13 2012-12-04 Leviton Manufacturing Co., Inc. Electrical switching module
US8330062B2 (en) 2009-09-18 2012-12-11 Leviton Manufacturing Co., Inc. Electrical switching component
US8463453B2 (en) 2009-11-13 2013-06-11 Leviton Manufacturing Co., Inc. Intelligent metering demand response
US8664886B2 (en) 2011-12-22 2014-03-04 Leviton Manufacturing Company, Inc. Timer-based switching circuit synchronization in an electrical dimmer
US8736193B2 (en) 2011-12-22 2014-05-27 Leviton Manufacturing Company, Inc. Threshold-based zero-crossing detection in an electrical dimmer
US8755944B2 (en) 2009-11-13 2014-06-17 Leviton Manufacturing Co., Inc. Electrical switching module
US9681526B2 (en) 2014-06-11 2017-06-13 Leviton Manufacturing Co., Inc. Power efficient line synchronized dimmer
EP3429843A4 (en) * 2016-07-07 2019-11-20 Hewlett-Packard Development Company, L.P. Metal fluoropolymer composites
EP3683819A1 (en) * 2019-01-18 2020-07-22 Tyco Electronics Componentes Electromecanicos Lda Anti-icing housing

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4031256C2 (en) * 1990-10-04 2000-03-02 Bosch Gmbh Robert Electrical connector
DE4210979C2 (en) * 1992-04-02 1995-07-13 Reinshagen Kabelwerk Gmbh Waterproof case
DE10127485A1 (en) * 2001-06-07 2002-12-12 Wabco Gmbh & Co Ohg Pluggable device for electronic housing e.g. for pressure sensor, includes boring at least partly through plug collar and opening out into outer surface of collar

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH336475A (en) * 1957-06-08 1959-02-28 El Re Ma S A Per Lo Sfruttamen Electrical apparatus comprising contact parts enclosed in a non-airtight housing
US3987258A (en) * 1974-04-30 1976-10-19 Matsushita Electric Industrial Co., Ltd. Water-proof sound apparatus
DE2835963A1 (en) * 1978-08-17 1980-03-06 Bosch Gmbh Robert ELECTROMAGNETIC RELAY

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH336475A (en) * 1957-06-08 1959-02-28 El Re Ma S A Per Lo Sfruttamen Electrical apparatus comprising contact parts enclosed in a non-airtight housing
US3987258A (en) * 1974-04-30 1976-10-19 Matsushita Electric Industrial Co., Ltd. Water-proof sound apparatus
DE2835963A1 (en) * 1978-08-17 1980-03-06 Bosch Gmbh Robert ELECTROMAGNETIC RELAY
GB2029107A (en) * 1978-08-17 1980-03-12 Bosch Gmbh Robert Electro-magnetic relay

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Funkschau, Band 48, Heft 18, August 1976, seite 50 Munchen, DE. DR. E. ZEHENDER et al.: "Druckausgleich in Wasserdichten Gehausen" * seite 50, mittel spalte, absatze 2, 3; rechte spalte, absatze 1, 2 * *

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0215667A3 (en) * 1985-09-17 1988-01-07 RAYCHEM CORPORATION (a Delaware corporation) Vent hole assembly
EP0215667A2 (en) * 1985-09-17 1987-03-25 RAYCHEM CORPORATION (a Delaware corporation) Vent hole assembly
FR2631158A1 (en) * 1988-05-07 1989-11-10 Bosch Gmbh Robert PRESSURE BALANCING ELEMENT FOR ELECTRICAL SWITCHING APPARATUS, PARTICULARLY USED IN THE CONSTRUCTION OF MOTOR VEHICLES
US4974745A (en) * 1988-05-07 1990-12-04 Robert Bosch Gmbh Pressure compensating element for electrical device enclosure
FR2631736A1 (en) * 1988-05-20 1989-11-24 Bosch Gmbh Robert PRESSURE COMPENSATING ELEMENT FOR AN ELECTRICAL DISTRIBUTION APPARATUS
US5248848A (en) * 1989-05-22 1993-09-28 Motorola, Inc. Reflow compatible device package
ES2127661A1 (en) * 1995-06-06 1999-04-16 Itw Fastex Italia Spa Process for producing a leaktight seal against a fluid of an electromechanical component and sealed component thus obtained, specifically for domestic electrical appliances
EP0862354A2 (en) * 1997-02-28 1998-09-02 TEMIC TELEFUNKEN microelectronic GmbH Closing device for pressure equalising apertures
EP0862354A3 (en) * 1997-02-28 1999-06-23 TEMIC TELEFUNKEN microelectronic GmbH Closing device for pressure equalising apertures
EP1024034A3 (en) * 1999-01-29 2003-11-12 Eaton Corporation Pressure sensor housing
WO2000072344A1 (en) * 1999-05-21 2000-11-30 Albert Ackermann Gmbh + Co. Kg Bed control unit for use in the field of nursing care
WO2010000825A1 (en) * 2008-07-03 2010-01-07 Robert Bosch Gmbh Starter relay and corresponding starting apparatus having a starter relay
US8330062B2 (en) 2009-09-18 2012-12-11 Leviton Manufacturing Co., Inc. Electrical switching component
US8558129B2 (en) 2009-09-18 2013-10-15 Leviton Manufacturing Co., Inc. Electrical switching component
US8281951B2 (en) 2009-10-15 2012-10-09 Leviton Manufacturing Co., Inc. Electrical component enclosure
US8463453B2 (en) 2009-11-13 2013-06-11 Leviton Manufacturing Co., Inc. Intelligent metering demand response
US8324761B2 (en) 2009-11-13 2012-12-04 Leviton Manufacturing Co., Inc. Electrical switching module
US8755944B2 (en) 2009-11-13 2014-06-17 Leviton Manufacturing Co., Inc. Electrical switching module
US8880232B2 (en) 2009-11-13 2014-11-04 Leviton Manufacturing Co., Inc. Intelligent metering demand response
US8664886B2 (en) 2011-12-22 2014-03-04 Leviton Manufacturing Company, Inc. Timer-based switching circuit synchronization in an electrical dimmer
US8736193B2 (en) 2011-12-22 2014-05-27 Leviton Manufacturing Company, Inc. Threshold-based zero-crossing detection in an electrical dimmer
US9681526B2 (en) 2014-06-11 2017-06-13 Leviton Manufacturing Co., Inc. Power efficient line synchronized dimmer
US9974152B2 (en) 2014-06-11 2018-05-15 Leviton Manufacturing Co., Inc. Power efficient line synchronized dimmer
EP3429843A4 (en) * 2016-07-07 2019-11-20 Hewlett-Packard Development Company, L.P. Metal fluoropolymer composites
EP3683819A1 (en) * 2019-01-18 2020-07-22 Tyco Electronics Componentes Electromecanicos Lda Anti-icing housing

Also Published As

Publication number Publication date
JPS575231A (en) 1982-01-12
PT72974A (en) 1981-06-01
BR8102830A (en) 1982-02-02
DE3017874A1 (en) 1981-11-12
PT72974B (en) 1982-04-30

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

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Effective date: 19821024

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Inventor name: LOESCH, KONRAD, ING.-GRAD.

Inventor name: KUPEC, PETER, DR. ING.