EP1151451A1 - Push button - Google Patents

Push button

Info

Publication number
EP1151451A1
EP1151451A1 EP99973660A EP99973660A EP1151451A1 EP 1151451 A1 EP1151451 A1 EP 1151451A1 EP 99973660 A EP99973660 A EP 99973660A EP 99973660 A EP99973660 A EP 99973660A EP 1151451 A1 EP1151451 A1 EP 1151451A1
Authority
EP
European Patent Office
Prior art keywords
bellows
plunger
push button
tappet
housing
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.)
Granted
Application number
EP99973660A
Other languages
German (de)
French (fr)
Other versions
EP1151451B1 (en
Inventor
Alfred Bonn
Peter Pfaff
Artur Wiese
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.)
Eaton Industries GmbH
Original Assignee
Moeller GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7895977&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1151451(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Moeller GmbH filed Critical Moeller GmbH
Publication of EP1151451A1 publication Critical patent/EP1151451A1/en
Application granted granted Critical
Publication of EP1151451B1 publication Critical patent/EP1151451B1/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/04—Cases; Covers
    • H01H13/06—Dustproof, splashproof, drip-proof, waterproof or flameproof casings
    • H01H13/063—Casings hermetically closed by a diaphragm through which passes an actuating member
    • 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 a push button, in particular for command devices, according to the preamble of the independent claim.
  • Such pushbuttons for command devices consist essentially of a two-part housing, a push-button tappet which is resiliently mounted in the housing and can be fastened to the tappet.
  • the object of the invention is to provide a push button that is further optimized in terms of manufacture and function (sealing).
  • the bellows is designed so that it is injected into the mold as a thermoplastic molding compound in a common tool almost simultaneously - with only a short time delay - with the molding compound of the plunger and is thus sprayed around the plunger.
  • the materials of the tappet and roller bellows are selected so that the two materials do not form an adhesive bond with one another.
  • polycarbonate is used as material for the tappet and styrene-ethylene-butylene-styrene (SEBS block) is used as material for the rolling bellows.
  • SEBS block styrene-ethylene-butylene-styrene
  • An optimized frictional connection or shrink connection is achieved in that the tappet is formed with a circumferential groove which is dimensioned in such a way that the lower bellows edge of the trumpet-shaped trained bellows experiences an optimized material neck shrinkage due to the defined mass accumulation of the bellows material in the area of the tappet groove.
  • the mass accumulation of the lower roll bellows edge achieved in this way is advantageously greater by at least a factor of 2 than in the remaining roll bellows area.
  • the push button according to the invention can on the one hand be manufactured much more simply and efficiently and, on the other hand, ensures an increased tightness with regard to dirt and moisture compared to conventional push buttons.
  • Figure 1 the push button according to the invention in a possible embodiment in a longitudinal sectional view
  • Figure 2 the tappet with bellows according to Figure 1 in a perspective view.
  • Figure 3 the plunger according to FIG. 2 in longitudinal section along the section line A-A.
  • a push button consists of a two-part housing with an upper part 2 and a lower part 4 which can be connected to one another by means of a screw or snap-in connection, a plunger 6 which is arranged in a linearly movable manner within the housing and which is between a rest position and an operating position is movable and which is acted upon by a spring element 8 against its actuating direction with a spring force, and a bellows 10 arranged circumferentially on the tappet 6 for sealing the interior of the housing.
  • the plunger 6 is essentially hollow cylindrical. One end is designed as a circular cover surface 6a for manual actuation of the push button, while the other end for actuating a contact arrangement (not shown) is used and is formed with outwardly facing collar-like extensions 6b for engagement and support on the housing.
  • the spring element 8 is designed as a spiral spring and is arranged around the tappet body. The spring 8 is supported on the tappet body between the collar-like lower extensions 6b and an annular counter bearing 6c of the tappet body.
  • the counter bearing 6c is advantageously designed as an annular extension of the tappet body and has an annular groove on its outer end face facing the surrounding housing wall for receiving a further sealing element.
  • the bellows 10 is preferably trumpet-shaped.
  • the plunger 6 and the bellows 10 are produced in two-component injection molding technology, the plastics for the plunger 6 and the bellows 10 being selected such that the plunger 6 and the bellows 10 do not form an adhesive bond with one another. This ensures an optimized rolling behavior of the roll table 10.
  • the plunger 6 has an annular groove 12 on the circumference for fixing the bellows 6 in a fixed manner. This groove 12 is dimensioned in coordination with the production tool (injection mold) such that the material accumulation of the rolling bellows 10 in the area of the groove 12 is at least a factor of 2 greater than in the rest of the area.
  • Fig. 2 shows the plunger 6 with the bellows 10 in a perspective view.
  • the different mass distribution in different areas of the rolling bellows 10 can be clearly seen in FIG. 3.
  • the defined material distribution of the bellows material advantageously results in a targeted material shrinkage in certain areas (I, II) of the bellows 10. On the one hand, this increases the tightness between tappet 6 and bellows 10 in area I and, on the other hand, further improves the rolling properties in area II of the bellows 10.
  • the present invention is not limited to the embodiments described above, but also encompasses all embodiments having the same effect in the sense of the invention.
  • the use of other material combinations which have the properties described, or the formation of the tappet 6 and the rolling bellows 10 in other geometric shapes is also provided.

Abstract

The invention relates to a push button, especially for electric control devices. According to the invention, a plunger is used which comprises rolled bellows that are injection molded thereon in a two component method. As a result, a push button is produced which exhibits significantly improved features with regard to sealing against dirt and moisture.

Description

B e s c h r e i b u n g Description
DrucktastePush button
Die Erfindung betrifft eine Drucktaste, insbesondere für Befehlsgeräte, nach dem Oberbegriff des unabhängigen Anspruchs.The invention relates to a push button, in particular for command devices, according to the preamble of the independent claim.
Es sind bereits derartige Drucktasten für Befehlsgeräte bekannt. Diese beste- hen im wesentlichen aus einem zweiteiligen Gehäuse, einem in dem Gehäuse linearbeweglich, federnd gelagerten Drucktastenstößel und einem an dem Stößel befestigbaren Rollbalg.Such pushbuttons for command devices are already known. These consist essentially of a two-part housing, a push-button tappet which is resiliently mounted in the housing and can be fastened to the tappet.
Derartige Konstruktionen haben sich in der Vergangenheit bereits bewährt.Such constructions have already proven themselves in the past.
Aufgabe der Erfindung ist es, eine Drucktaste zu schaffen, die hinsichtlich Fertigung und Funktion (Abdichtung) weiter optimiert ist.The object of the invention is to provide a push button that is further optimized in terms of manufacture and function (sealing).
Ausgehend von einer Drucktaste der eingangs genannten Art wird die Aufga- be erfindungsgemäß durch die kennzeichnenden Merkmale des unabhängigen Anspruches gelöst, während den abhängigen Ansprüchen vorteilhafte Weiterbildungen der Erfindung zu entnehmen sind. Gemäß der Erfindung ist der Rollbalg konstruktiv so gestaltet, daß er als thermoplastische Formmasse in einem gemeinsamen Werkzeug nahezu zeitgleich - mit nur kurzer zeitlicher Verzögerung - mit der Formmasse des Stößels in das Werkzeug eingespritzt und somit um den Stößel herumgespritzt wird. Hierbei werden die Werkstoffe von Stößel und Rollbalg so gewählt, daß die beiden Werkstoffe keinen Haftverbund miteinander eingehen. In einer besonders bevorzugten Ausführungsform der Erfindung wird als Werkstoff für den Stößel Polycarbonat und als Werkstoff für den Rollbalg Styrol-Etylen-Butylen-Styrol (SEBS-Block) verwendet. Eine optimierte Kraftschluß- beziehungsweise Schrumpfverbindung wird erreicht, indem der Stößel mit einer umfänglichen Nut ausgebildet wird, die derart dimensioniert ist, daß der untere Rollbalgrand des trompetenförmig ausgebildeten Rollbalgs eine optimierte Matehalschwindung durch die definierte Massenanhäufung des Rollbalgwerkstoffs im Bereich der Stößelnut erfährt. Die so erzielte Massenanhäufung des unteren Rollbalgrandes ist mit Vorteil um mindestens den Faktor 2 größer als im übrigen Rollbalgbereich. Die erfindungsgemäße Drucktaste kann zum einen deutlich einfacher und effizienter hergestellt werden und gewährleistet zum anderen gegenüber herkömmlichen Drucktasten eine erhöhte Dichtigkeit hinsichtlich Schmutz und Feuchtigkeit.Starting from a pushbutton of the type mentioned at the outset, the task is solved according to the invention by the characterizing features of the independent claim, while advantageous developments of the invention can be found in the dependent claims. According to the invention, the bellows is designed so that it is injected into the mold as a thermoplastic molding compound in a common tool almost simultaneously - with only a short time delay - with the molding compound of the plunger and is thus sprayed around the plunger. The materials of the tappet and roller bellows are selected so that the two materials do not form an adhesive bond with one another. In a particularly preferred embodiment of the invention, polycarbonate is used as material for the tappet and styrene-ethylene-butylene-styrene (SEBS block) is used as material for the rolling bellows. An optimized frictional connection or shrink connection is achieved in that the tappet is formed with a circumferential groove which is dimensioned in such a way that the lower bellows edge of the trumpet-shaped trained bellows experiences an optimized material neck shrinkage due to the defined mass accumulation of the bellows material in the area of the tappet groove. The mass accumulation of the lower roll bellows edge achieved in this way is advantageously greater by at least a factor of 2 than in the remaining roll bellows area. The push button according to the invention can on the one hand be manufactured much more simply and efficiently and, on the other hand, ensures an increased tightness with regard to dirt and moisture compared to conventional push buttons.
Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus dem folgenden, anhand von Figuren erläuterten Ausführungsbeispiel. Es zeigenFurther details and advantages of the invention result from the following exemplary embodiment explained with reference to figures. Show it
Figur 1 : die erfindungsgemäße Drucktaste in einer möglichen Ausführungsform in einer Längsschnittdarstellung;Figure 1: the push button according to the invention in a possible embodiment in a longitudinal sectional view;
Figur 2: den Stößel mit Rollbalg gemäß Fig. 1 in einer Perspektivdarstellung; undFigure 2: the tappet with bellows according to Figure 1 in a perspective view. and
Figur 3: den Stößel gemäß Fig. 2 im Längsschnitt entlang der Schnittlinie A- A.Figure 3: the plunger according to FIG. 2 in longitudinal section along the section line A-A.
Nach Fig. 1 besteht eine erfindungsgemäße Drucktaste aus einem zweiteiligen Gehäuse mit einem Oberteil 2 und einem Unterteil 4 die mittels einer Schraub- oder einer Rastverbindung miteinander verbindbar sind, einem in- nerhalb des Gehäuses iinearbeweglich angeordneten Stößel 6, der zwischen einer Ruhestellung und einer Betriebsstellung bewegbar ist und der durch ein Federelement 8 entgegen seiner Betätigungsrichtung mit einer Federkraft beaufschlagt ist, und einem umfänglich an dem Stößel 6 angeordneten Rollbalg 10 zur Abdichtung des Gehäuseinneren.According to FIG. 1, a push button according to the invention consists of a two-part housing with an upper part 2 and a lower part 4 which can be connected to one another by means of a screw or snap-in connection, a plunger 6 which is arranged in a linearly movable manner within the housing and which is between a rest position and an operating position is movable and which is acted upon by a spring element 8 against its actuating direction with a spring force, and a bellows 10 arranged circumferentially on the tappet 6 for sealing the interior of the housing.
Der Stößel 6 ist im wesentlichen hohlzylinderförmig ausgebildet. Das eine Ende ist als kreisrunde Deckelfläche 6a zur Handbetätigung der Drucktaste ausgebildet, während das andere Ende der Betätigung einer Kontaktanordnung (nicht dargestellt) dient und mit nach außen weisenden kragenartigen Fortsätzen 6b zur Hintergreifung und Abstützung am Gehäuse ausgebildet ist. Das Federelement 8 ist als Spiralfeder ausgebildet und um den Stößelkörper herum angeordnet. Dabei stützt die Feder 8 sich am Stößelkörper zwischen den kragenartigen unteren Fortsätzen 6b und einem kreisringförmigen Gegenlager 6c des Stößelkörpers ab. Das Gegenlager 6c ist mit Vorteil als kreisringförmige Erweiterung des Stößelkörpers ausgebildet und weist auf seiner äußeren, der umliegenden Gehäusewand zugekehrten Stirnfläche eine Ringnut zur Aufnahme eines weiteren Dichtungselementes auf.The plunger 6 is essentially hollow cylindrical. One end is designed as a circular cover surface 6a for manual actuation of the push button, while the other end for actuating a contact arrangement (not shown) is used and is formed with outwardly facing collar-like extensions 6b for engagement and support on the housing. The spring element 8 is designed as a spiral spring and is arranged around the tappet body. The spring 8 is supported on the tappet body between the collar-like lower extensions 6b and an annular counter bearing 6c of the tappet body. The counter bearing 6c is advantageously designed as an annular extension of the tappet body and has an annular groove on its outer end face facing the surrounding housing wall for receiving a further sealing element.
Der Rollbalg 10 ist vorzugsweise trompetenförmig. Gemäß der Erfindung sind der Stößel 6 und der Rollbalg 10 in 2-Komponenten Spritztechnik hergestellt, wobei die Kunststoffe für Stößel 6 und Rollbalg 10 derart gewählt sind, daß Stößel 6 und Rollbalg 10 keinen Haftverbund miteinander eingehen. Hierdurch wird ein optimiertes Abrollverhalten des Rollbaigs 10 gewährleistet. Mit Vorteil weist der Stößel 6 umfänglich eine kreisringförmige Nut 12 zur fixierenden Aufnahme des Rollbalgs 6 auf. Diese Nut 12 ist in Abstimmung mit dem Herstellungswerkzeug (Spritzform) derart dimensioniert, daß die Materialanhäufung des Rollbalgs 10 im Bereich der Nut 12 mindestens um den Faktor 2 größer ist als im übrigen Bereich. Hierdurch wird eine deutlich verbesserte „Verbindung" beziehungsweise ein verbesserter Schluß zwischen Stößel 6 und Rollbalg 10 und somit auch eine erhöhte Dichtigkeit zwischen den beiden Teilen erreicht. Mit Vorteil werden die beiden Teile in einem gemeinsamen Spritzvorgang gefertigt und dadurch zugleich schon montiert. Der separate Montageschritt, den Rollbalg 10 an dem Stößel 10 genaustens zu positionieren entfällt somit.The bellows 10 is preferably trumpet-shaped. According to the invention, the plunger 6 and the bellows 10 are produced in two-component injection molding technology, the plastics for the plunger 6 and the bellows 10 being selected such that the plunger 6 and the bellows 10 do not form an adhesive bond with one another. This ensures an optimized rolling behavior of the roll table 10. Advantageously, the plunger 6 has an annular groove 12 on the circumference for fixing the bellows 6 in a fixed manner. This groove 12 is dimensioned in coordination with the production tool (injection mold) such that the material accumulation of the rolling bellows 10 in the area of the groove 12 is at least a factor of 2 greater than in the rest of the area. As a result, a significantly improved “connection” or an improved closure between the tappet 6 and the rolling bellows 10 and thus also an increased tightness between the two parts is achieved. The two parts are advantageously produced in a joint injection molding process and thereby already assembled. The separate assembly step Positioning the rolling bellows 10 on the tappet 10 is therefore dispensed with.
Als besonders vorteilhaft erwiesen sich bei der Konstruktion der Stößel- Rollbalg-Kombination die Verwendung von Polycarbonat als Stößelwerkstoff und SEBS als Rollbalgwerkstoff.The use of polycarbonate as the tappet material and SEBS as the roll bellows material proved to be particularly advantageous in the construction of the tappet-bellows combination.
Fig. 2 zeigt den Stößel 6 mit Rollbalg 10 in einer Perspektivdarstellung. In Fig. 3 ist deutlich die unterschiedliche Massenverteiiung in unterschiedlichen Bereichen des Rollbalgs 10 erkennbar. Durch die definierte Materialverteilung des Rollbalgwerkstoffs wird mit Vorteil eine gezielte Materialschwin- dung in bestimmten Bereichen (I, II) des Rollbalgs 10 erreicht. Hierdurch wird zum einen im Bereich I die Dichtigkeit zwischen Stößel 6 und Rollbalg 10 erhöht und zum anderen die Abrolleigenschaften im Bereich II des Rollbalgs 10 weiter verbessert. Insbesondere für die Abrolleigenschaften des Rollbalgs ist es unabdingbar, daß die unterschiedlichen Werkstoffe von Stößel 6 und Rollbalg 10 keinen Haftverbund miteinander eingehen.Fig. 2 shows the plunger 6 with the bellows 10 in a perspective view. The different mass distribution in different areas of the rolling bellows 10 can be clearly seen in FIG. 3. The defined material distribution of the bellows material advantageously results in a targeted material shrinkage in certain areas (I, II) of the bellows 10. On the one hand, this increases the tightness between tappet 6 and bellows 10 in area I and, on the other hand, further improves the rolling properties in area II of the bellows 10. In particular for the rolling properties of the roll bellows, it is essential that the different materials of the plunger 6 and roll bellows 10 do not form an adhesive bond with one another.
Die vorliegende Erfindung ist nicht auf die vorstehend beschriebenen Ausführungsformen beschränkt, sondern umfaßt auch alle im Sinne der Erfindung gleichwirkenden Ausführungsformen. So ist natürlich auch die Verwendung anderer Werkstoffkombinationen, die die beschriebenen Eigenschaften auf- weisen, oder die Ausbildung von Stößel 6 und Rollbalg 10 in anderen geometrischen Formen vorgesehen. The present invention is not limited to the embodiments described above, but also encompasses all embodiments having the same effect in the sense of the invention. Thus, of course, the use of other material combinations which have the properties described, or the formation of the tappet 6 and the rolling bellows 10 in other geometric shapes is also provided.

Claims

P a t e n t a n s p r ü c h e Patent claims
1. Drucktaste, insbesondere für elektrische Befehisgeräte, mit1. Push button, especially for electrical command devices, with
- einem Gehäuse mit einem Oberteil (2) und einem Unterteil (4), - einem innerhalb des Gehäuses linearbeweglich angeordneten Stößel (6), der zwischen einer Ruhestellung und einer Betriebsstellung bewegbar ist und der durch ein Federelement (8) entgegen seiner Betätigungsrichtung mit einer Federkraft beaufschlagt ist, und- A housing with an upper part (2) and a lower part (4), - A plunger (6) arranged linearly movable within the housing, which can be moved between a rest position and an operating position and which by a spring element (8) against its direction of actuation with a Spring force is applied, and
- einem umfänglich an dem Stößel (6) angeordneten Rollbalg (10) zur Ab- dichtung des Gehäuseinneren, wobei der Stößel (6) umfänglich eine kreisringförmige Nut (12) zur fixierenden Aufnahme des Rollbalgs (10) aufweist, dadurch gekennzeichnet, daß- A bellows (10) arranged circumferentially on the tappet (6) for sealing the interior of the housing, the tappet (6) circumferentially having an annular groove (12) for fixing the bellows (10) in place, characterized in that
- der Stößel (6) und der Rollbalg (10) in Zweikomponenten-Spritztechnik hergestellt sind, wobei die Kunststoffe für Stößel (6) und Rollbalg (10) derart gewählt sind, daß Stößel (6) und Rollbalg (10) keinen Haftverbund eingehen.- The plunger (6) and the rolling bellows (10) are made in two-component spraying technology, the plastics for the plunger (6) and rolling bellows (10) being chosen such that the plunger (6) and rolling bellows (10) do not form an adhesive bond.
2. Drucktaste nach Anspruch 1 , dadurch gekennzeichnet, daß der Stößel (6) aus Polycarbonat besteht.2. Push button according to claim 1, characterized in that the plunger (6) consists of polycarbonate.
3. Drucktaste nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß der Rollbalg (10) aus einer Styrol-Etylen- Butylen-Styrol-Verbindung besteht.3. Push button according to one of the preceding claims, characterized in that the bellows (10) consists of a styrene-ethylene-butylene-styrene compound.
Drucktaste nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß die Nut (12) derart ausgebildet ist, daß die hierdurch erzielte Materialanhäufung des Rollbalgs (10) im Bereich der Nut (12) mindestens um den Faktor 2 größer ist als im übrigen Bereich. Push button according to one of the preceding claims, characterized in that the groove (12) is designed such that the material accumulation of the bellows (10) in the region of the groove (12) achieved thereby is at least a factor of 2 greater than in the rest of the region.
EP99973660A 1999-02-01 1999-11-09 Push button Revoked EP1151451B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19903838A DE19903838C1 (en) 1999-02-01 1999-02-01 Push-button, especially for electrical control unit has pressure piece and surrounding collar seal produced by two-component injection of plastics which form no adhesive bond
DE19903838 1999-02-01
PCT/EP1999/008589 WO2000046825A1 (en) 1999-02-01 1999-11-09 Push button

Publications (2)

Publication Number Publication Date
EP1151451A1 true EP1151451A1 (en) 2001-11-07
EP1151451B1 EP1151451B1 (en) 2003-01-22

Family

ID=7895977

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99973660A Revoked EP1151451B1 (en) 1999-02-01 1999-11-09 Push button

Country Status (6)

Country Link
EP (1) EP1151451B1 (en)
CN (1) CN1129155C (en)
AT (1) ATE231648T1 (en)
AU (1) AU1382000A (en)
DE (2) DE19903838C1 (en)
WO (1) WO2000046825A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20010302A1 (en) 2001-02-14 2002-08-14 Whirlpool Co CONSTRUCTION OF BUTTONS FOR ELECTRONIC ELECTRICAL AND / OR MECHANICAL APPLICATIONS
DE10116587C1 (en) * 2001-04-03 2002-09-12 Elan Schaltelemente Gmbh & Co Switch or signaling device, for use in foodstuffs, medical and pharmaceutical industries, especially push button, has conical collar connected to button or to sealing collar between it and casing
CN100578706C (en) * 2007-01-08 2010-01-06 左天乔 Totally sealed electric switch
CN104966634B (en) * 2015-07-02 2017-08-18 惠州冠泰电子有限公司 A kind of key switch dustproof construction

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1155183B (en) * 1958-03-14 1963-10-03 Siemens Ag Push button drive for electrical switchgear
US4155972A (en) * 1977-09-06 1979-05-22 Keystone Consolidated Industries, Inc. Multiple-shot method of molding plastic products
EP0328850A3 (en) * 1988-02-16 1990-09-26 TSCHUDIN & HEID AG Splash proof push button switch
CH679093A5 (en) * 1989-06-23 1991-12-13 Fela Planungs Ag
DE4208087C1 (en) * 1992-03-13 1993-04-29 K.A. Schmersal Gmbh & Co., 5600 Wuppertal, De Electromechanical push-button switch for vehicle door - has groove on outer circumference of cylindrical housing for snap-fitting O=ring installed on door or similar
GB9225052D0 (en) * 1992-11-30 1993-01-20 Burgess Micro Switch Co Ltd Electric switch
DE19646474B4 (en) * 1996-11-11 2007-09-06 Marquardt Gmbh Electric switch

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0046825A1 *

Also Published As

Publication number Publication date
DE59904124D1 (en) 2003-02-27
CN1129155C (en) 2003-11-26
DE19903838C1 (en) 2000-07-20
WO2000046825A1 (en) 2000-08-10
AU1382000A (en) 2000-08-25
ATE231648T1 (en) 2003-02-15
CN1334958A (en) 2002-02-06
EP1151451B1 (en) 2003-01-22

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