EP0374545B1 - Schaltvorrichtung - Google Patents

Schaltvorrichtung Download PDF

Info

Publication number
EP0374545B1
EP0374545B1 EP89122151A EP89122151A EP0374545B1 EP 0374545 B1 EP0374545 B1 EP 0374545B1 EP 89122151 A EP89122151 A EP 89122151A EP 89122151 A EP89122151 A EP 89122151A EP 0374545 B1 EP0374545 B1 EP 0374545B1
Authority
EP
European Patent Office
Prior art keywords
switch
switching device
injection moulded
guide sleeve
moulded casing
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
EP89122151A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0374545A2 (de
EP0374545A3 (de
Inventor
Reinhold Barlian
Otto Dr. Eberhardt
Karl-Heinz Lux
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0374545A2 publication Critical patent/EP0374545A2/de
Publication of EP0374545A3 publication Critical patent/EP0374545A3/de
Application granted granted Critical
Publication of EP0374545B1 publication Critical patent/EP0374545B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

Definitions

  • the invention relates to a switching device with the features of the preamble of claim 1.
  • DE-A-2018763 discloses a method for encasing switchgear with a thermoset housing and metal pipe-guided tappet, which is provided for the production of explosion-proof switchgear, the switchgear being locked in the mold space of an injection mold and kept at a distance from the mold walls and a thermoplastic molding compound in the molding space is injected.
  • the switching device has a plunger which is mounted coaxially displaceably in a threaded sleeve. A sealing of the molding space with respect to the threaded bushing and the electrical connections is also to take place via the mounting elements which lock the switching device in the molding space.
  • the object of the invention is to further develop a switching device with the features of the preamble of claim 1 in such a way that with simple means a reduction in the amount of work and a switch closure that is gentle on the switch function and is sealed in such a manner that has a high level of safety and in a particularly endangered environment is achieved can be used.
  • the switching device 1 includes a switch 2, which can preferably be designed as a microswitch.
  • the microswitch 2 has a plunger 3 which protrudes on the upper switch surface 4 in the drawing.
  • Electrical conductors 5 can be provided on the opposite lower side, which can be combined individually or in a hose line and Connections 6 on the underside 7 of the switch 2 can be fixed, for example, by means of screws, soldering or welding.
  • the conductors 5 have a cable lug 8 which is fixed at the connection 6.
  • the switch 2 In a plane above the connections 6, the switch 2 has two through bores 9 through which fastening screws or the like, not shown here, can be inserted.
  • a hood 10 is placed over the switch 2, which closely encloses the essentially rectangular microswitch 2 on the four side surfaces and on the upper switch surface 4.
  • the hood 10 At the top, the hood 10 has a guide sleeve 11 which can expediently be formed with the hood 10 in the same material.
  • a seal 13 preferably in the form of an O-ring, can be provided, which can be mounted in an annular groove 14, which is expediently formed coaxially to the guide sleeve 12 on the end face facing the switch 2, and on the upper switch surface 4 is present, so that here a gas-tight seal is provided between the hood 10 or the guide sleeve 11 and the switch 2.
  • the seal 13 can be expediently made of a rubber-elastic material.
  • An actuator 15 can be mounted in a preferably stepped bore of the guide sleeve 11 in such a way that an ignition-resistant gap is formed.
  • the actuator 15 acts against the plunger 3 and can be rigid in the axial direction.
  • the actuator 15 cannot be rigid, but rather, according to the exemplary embodiment shown, be designed as a so-called overstroke segment and for this purpose have a pot-shaped lower part 16 and a hollow cylindrical head part 17, which can be pressed into the lower part 16 against the force of a helical compression spring 18 when the lower part 16 acting against the plunger 3 has been displaced axially downward against the switch 2.
  • the FIG. 1 clearly shows that both the lower part 16 and the head part 17 are axially guided in the guide sleeve 11 and that the telescopic head part 17 is also guided on the inner surface of the pot-shaped wall of the lower part 16.
  • the actuator 15 has a hood-shaped membrane 19 which has a bead-shaped peripheral edge 20.
  • the bead 20 is supported in a groove 21 formed on the upper end face of the guide sleeve 11.
  • the membrane 19 can have a stop 22 at the top, which rests on the head part 17 and on which an actuating lever 23 or the like can rest, which is pivotably mounted on an axis 24.
  • the actuating lever 23 can also be supported by a coil spring 25 shown in dashed lines. If the actuating lever 23 is pivoted downward against the force of the helical spring 25 and against the stop 22, the actuator 15 is displaced axially downward, so that the plunger 3 is immersed in the switch 2. If the actuation stroke is greater than the stroke required for the actuation of the plunger 3, the head part 17 of the actuator is immersed 15 in the lower part 16.
  • the switching device 1 has only a plastic injection-molded sleeve 26 on the outside, which encloses the switch 2, the hood 10 with the guide sleeve 11 and the connections 6 with the conductors 5 in an explosion-protected manner, that is to say explosion-proof, preferably closely, so that there are no voids.
  • an injection molded edge 27 of the injection molded cover 26 overlaps the bead 20 of the membrane 19, so that the membrane edge 20 is clamped gas-tight in the guide sleeve groove 21.
  • the electrical conductors 5 are tightly and gas-tightly enclosed by the plastic injection-molded sleeve 26, so that the homogeneous plastic injection-molded sleeve 26 alone provides an absolutely sealed enclosure for the switch 2 and the associated parts.
  • the injection molded encapsulation according to the invention consists of a homogeneous wall thickness which extends over the entire circumference, including all functional parts.
  • the immediate encapsulation of the switch parts can be done in a single injection molding step, both thermoplastic and thermosetting plastic can be injected as a hermetically sealed casing.
  • a major advantage is that the hermetically sealed encapsulation is completely produced after completion of the spraying process and no further sealing work as with the known switches is necessary, so that overall a technically better switching device and also a significant cost saving is achieved.
  • the switch bores 9 or their walls with a plastic layer and to provide a tubular insulation 28 in the bore 9.
  • This bore insulation 28 can be integrally connected to the plastic injection molding sleeve 26 and for this purpose according to the in FIG. 2 shown embodiment be made of the same material with the plastic injection molding sleeve 26 in one and the same injection molding process.
  • spray welding 31 takes place at the ends 30 simultaneously, that is to say in one and the same operation, so that a hermetically sealed covering can also be achieved here.
  • the gas-tight and explosion-proof plastic sleeve 26 produced by the injection molding process can have approximately the same wall thicknesses all around. In a preferred embodiment, however, it may be advantageous to design the lower part 32 of the injection-molded casing, in which the connections 6 and the electrical conductors 5 are embedded gas-tight, to be substantially thicker, for example five to ten times thicker, than the side walls of the plastic injection-molded casing 26, so that there are extremely long insulating distances and safe use in an explosive atmosphere is guaranteed.
  • the switching insert 2 itself is not exposed to any risks with regard to damage or malfunction, so that a high level of security is provided for permanent functionality. Because of the injection molding encapsulation method according to the invention, no additional measures need to be taken for a careful sealing, since the preferably gas-tight encapsulation can take place directly in a single injection molding encapsulation process.

Landscapes

  • Manufacture Of Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Thermally Actuated Switches (AREA)
EP89122151A 1988-12-21 1989-11-30 Schaltvorrichtung Expired - Lifetime EP0374545B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3842960 1988-12-21
DE3842960A DE3842960A1 (de) 1988-12-21 1988-12-21 Verfahren zum kapseln eines schalters und danach hergestellte schaltvorrichtung

Publications (3)

Publication Number Publication Date
EP0374545A2 EP0374545A2 (de) 1990-06-27
EP0374545A3 EP0374545A3 (de) 1991-09-04
EP0374545B1 true EP0374545B1 (de) 1995-03-08

Family

ID=6369681

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89122151A Expired - Lifetime EP0374545B1 (de) 1988-12-21 1989-11-30 Schaltvorrichtung

Country Status (3)

Country Link
EP (1) EP0374545B1 (enrdf_load_stackoverflow)
AT (1) ATE119708T1 (enrdf_load_stackoverflow)
DE (2) DE3842960A1 (enrdf_load_stackoverflow)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4233447C1 (de) * 1992-10-05 1994-01-27 Barlian Reinhold Schalteinrichtung
DE4312736C2 (de) * 1993-04-20 1998-09-10 Karl Kapfer Explosionsgeschütztes Microschalterbauteil
DE19719436C2 (de) * 1997-05-13 1999-06-17 Walter Soehner Gmbh & Co Spritzgußgehäuse
DE20116502U1 (de) 2001-10-09 2002-01-03 Somfy, Cluses Betätigungsvorrichtung für einen elektrischen Schalter
JP3722287B2 (ja) * 2002-06-11 2005-11-30 アサ電子工業株式会社 リミットスイッチ
DE202004014569U1 (de) * 2004-09-17 2005-01-20 Huf Hülsbeck & Fürst Gmbh & Co. Kg Elektrische Baueinheit mit einem Betätiger für einen elektrischen Schaltkreis im Fahrzeug

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1197956B (de) * 1955-07-18 1965-08-05 Honeywell Inc Abgedichteter Schalter
CH399568A (de) * 1962-08-03 1965-09-30 Edwin Dr Guignard Hermetisch verschlossenes Gehäuse mit eingebautem, mechanisch betätigbarem elektrischen Schalter
DE1590938A1 (de) * 1966-09-12 1970-04-16 Oberweimar Elektroinstallation Schlagwetter- und explosionsgeschuetzter,druckfest gekapselter Einbaupaketschalter
FR2005015A1 (enrdf_load_stackoverflow) * 1968-03-29 1969-12-05 Microprecision Electroni
DE2018763B2 (de) * 1970-04-18 1975-02-20 Veb Kombinat Schaltelektronik, X 8717 Oppach Verfahren zum Umhüllen von Schaltgeräten
DE8304932U1 (de) * 1983-02-23 1984-10-31 Kapfer, Karl, 7108 Möckmühl Explosionssicherer Leuchtschalter und Leuchttaster

Also Published As

Publication number Publication date
DE3842960A1 (de) 1990-06-28
DE3842960C2 (enrdf_load_stackoverflow) 1990-11-08
EP0374545A2 (de) 1990-06-27
EP0374545A3 (de) 1991-09-04
DE58909088D1 (de) 1995-04-13
ATE119708T1 (de) 1995-03-15

Similar Documents

Publication Publication Date Title
EP3130000B1 (de) Verfahren zur herstellung eines feststoffisolierten schalterpols und feststoffisolierter schalterpol
EP1108834A2 (de) Türaussengriffanordnung für eine Kraftfahrzeugtür
EP0374545B1 (de) Schaltvorrichtung
EP3549414A1 (de) Elektrische baugruppe
DE3308332C2 (enrdf_load_stackoverflow)
DE4225267C3 (de) Abdichtungsvorrichtung für ein elektronisches Schaltgerät
DE1490761B1 (de) Elektrische Kontaktmittel umschliessende Vorrichtung
DE19754158A1 (de) Verfahren zum Isolieren eines elektrischen Bauteiles
EP0989567B1 (de) Vergussgekapselte Vorrichtung
DE2018763B2 (de) Verfahren zum Umhüllen von Schaltgeräten
DE4108416C2 (de) Kraftstoff-Einspritzdüse für Brennkraftmaschinen
DE3413452C2 (enrdf_load_stackoverflow)
EP0419468B1 (de) Metallgekapselte, druckgasisolierte hochspannungsschaltanlage mit isoliertem erdungsschalter
EP0336137A1 (de) Schutzkappe für Zündspulen - Schaltgerät - Kombination
EP0187203A2 (de) Kabelverteiler bzw. -abzweiger für Breitbandkommunikationskoaxialkabel
DE8815814U1 (de) Schaltvorrichtung
EP0793244B1 (de) Elektrischer Kondensator
WO2000069032A1 (de) Verfahren zum schutz von kabellitzen
DE10231510B3 (de) Abdichtung einer Zündspule
EP2958409B1 (de) Elektrischer Verteiler und Kunststoffspritzgussverfahren zu dessen Herstellung
DE19757023B4 (de) Schalteinrichtung mit Explosionsschutz
DE10257101B3 (de) Stabzündspule
DE9314819U1 (de) Kabeldurchführung bei einem elektrischen Gerät
DE19503933C1 (de) Muffenrohr für Verbindungs- und Übergangsmuffen
DE102020214223A1 (de) Gehäuseanordnung, Stromrichter, Kraftfahrzeug sowie Verfahren zur Herstellung einer Gehäuseanordnung

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: 19891130

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE ES FR GB GR IT LI NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE ES FR GB GR IT LI NL SE

17Q First examination report despatched

Effective date: 19931111

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB GR IT LI NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19950308

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19950308

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19950308

REF Corresponds to:

Ref document number: 119708

Country of ref document: AT

Date of ref document: 19950315

Kind code of ref document: T

REF Corresponds to:

Ref document number: 58909088

Country of ref document: DE

Date of ref document: 19950413

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19950608

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19950612

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19951130

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19981204

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19991125

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19991129

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991130

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19991130

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20000225

Year of fee payment: 11

BERE Be: lapsed

Owner name: BARLIAN REINHOLD

Effective date: 19991130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001130

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001130

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010601

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20001130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010731

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20010601

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20081223

Year of fee payment: 20