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EP0278018A1 - Boîtier ou partie de boîtier possédant au moins une touche d'un interrupteur électrique - Google Patents

Boîtier ou partie de boîtier possédant au moins une touche d'un interrupteur électrique Download PDF

Info

Publication number
EP0278018A1
EP0278018A1 EP87101691A EP87101691A EP0278018A1 EP 0278018 A1 EP0278018 A1 EP 0278018A1 EP 87101691 A EP87101691 A EP 87101691A EP 87101691 A EP87101691 A EP 87101691A EP 0278018 A1 EP0278018 A1 EP 0278018A1
Authority
EP
European Patent Office
Prior art keywords
housing
switching
housing according
designed
contact
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
EP87101691A
Other languages
German (de)
English (en)
Other versions
EP0278018B1 (fr
Inventor
Hans Weiss
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
Priority to DE8787101691T priority Critical patent/DE3760258D1/de
Priority to EP87101691A priority patent/EP0278018B1/fr
Priority to ES87101691T priority patent/ES2008863B3/es
Priority to AT87101691T priority patent/ATE44125T1/de
Publication of EP0278018A1 publication Critical patent/EP0278018A1/fr
Application granted granted Critical
Publication of EP0278018B1 publication Critical patent/EP0278018B1/fr
Priority to GR89400070T priority patent/GR3000076T3/el
Expired legal-status Critical Current

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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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H2003/007—Mechanisms for operating contacts the contacts being actuated by deformation of a flexible housing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/09—Flexible integral part of housing

Definitions

  • the invention relates to a housing or housing part which is provided with at least one button of an electrical switch and is operatively connected to switching contacts via a connecting element.
  • buttons-provided housings are known in many ways for generating electrical switching signals and on housings for a wide variety of uses. Such buttons can also on housing parts such. B. safety edges or switch inserts. If the term “housing” is used in the following, then such housing parts are also always included.
  • a known embodiment consists, for example, of a switching tappet guided in a housing opening, which is provided with a button outside the housing and rests resiliently in the interior of the housing on a contact arrangement which, for example, can consist of a contact element arranged on the inside of a resilient membrane, which counteracts two switch contacts to be connected can be pushed by means of the button.
  • a switch thus consists of a large number of individual parts, which are manufactured individually are, so that in particular with a plurality of keys arranged on a housing, the production is complex and expensive.
  • the button and the guide tappet lead to dirt and are difficult to clean.
  • the key or tactile surface consists of a thin film spanning a housing opening, under which there is a contact arrangement arranged in several layers.
  • the maximum possible switching stroke is so small that a multi-stage switch is very difficult to implement and, moreover, an acoustic signal has to be generated to recognize the switching operation carried out.
  • there is also the risk of slight damage to this film and the production of the required layer arrangement is also very costly, especially if high switching reliability and accuracy are to be achieved.
  • the tactile surface of the key is a partial surface of the housing, the center of which is connected to its circumferential line by means of webs which are arranged next to one another in a helical manner, the connecting member being integrally formed on the center.
  • the housing can be manufactured together with all buttons and connecting links or switching plungers as a one-piece part, preferably as a plastic injection-molded part.
  • Switch contact elements then only have to be plugged onto the connecting links in a second operation, which then, in cooperation with an appropriately designed printed circuit board that is necessary for an electronic circuit, constitute the complete switches.
  • the touch surface Due to its design, the touch surface has resilient properties, so that no additional spring is required to generate a restoring force. Furthermore, this touch surface ensures splash water protection and allows switching strokes that are in the order of half the diameter of the touch surface.
  • the flush arrangement of the preferably round touch surface to the outer surface of the housing is particularly expedient, the flush design simultaneously representing the simplest type of design. This provides extensive protection against mechanical damage and dirt deposits, while at the same time making cleaning easy.
  • a protruding web is expediently formed in one piece along the circumferential line of the tactile surface, which on the one hand makes it easier to find the tactile surface and on the other hand deflects liquid running down around the tactile surface.
  • the webs which essentially represent the tactile surface are preferably formed by helical, very narrow Slits are formed, which can be produced in a simple manner by appropriate design of the injection mold. In principle, subsequent shaping is of course also possible, for example by means of a milling process. In both cases, the production of these slots is facilitated by the fact that they are widened towards the inside of the housing. They remain very narrow towards the outside of the housing to guarantee effective splash protection.
  • the connecting link which is designed as a switching plunger and is integrally formed, expediently has a pin-like free end, as a result of which the switching contact members can be attached in a simple manner by plugging on.
  • the formation of the free end with a rectangular cross section prevents the switching contact elements from being inadvertently rotated and ensures their defined position.
  • These metallic switch contact members have at least two resilient arms, which are in particular provided with contact elevations. These can then be moved resiliently by means of the button against corresponding switch contacts, preferably on a printed circuit board. In order to achieve a two-stage switching behavior, four resilient arms are required, two contact elevations each being arranged in a first plane and the other two contact elevations being arranged in a second plane. In this way, a two-stage switch can be realized with the simplest means.
  • At least two of the resilient arms are expediently angled and rest with their free end, which is preferably designed as a rounded sliding surface, on the counter surface carrying the counter contacts.
  • two switching contact levels can be generated in a simple manner, for example by two Shift arms are angled and the two other shift arms are not angled, or in that two shift arms are angled and the other two shift arms are less angled.
  • Another advantage is that an unintentional contact of the switch contacts with the counter contacts is prevented by spring action, and finally, when the switch contact member moves against the counter contacts, a laterally directed, rubbing movement is carried out, which destroys a possibly occurring, insulating corrosion layer, thereby causing a safe switching behavior is guaranteed.
  • simple copper contacts are sufficient to achieve reliable switching behavior, and expensive surface finishing with nickel, silver or gold can be dispensed with.
  • the switching plunger For safe guiding of the switching plunger, its free end is additionally designed as a guide element which plunges into an opening of an element provided with mating contacts for the switching contact elements.
  • the pin-like free end thus has a double function in that it serves as a plug receptacle for the switch contact members and as a guide member.
  • This element provided with the mating contacts is expediently designed as a printed circuit board provided in any case in electronic devices, the mating contacts then being designed in a simple manner as conductor elements of the printed circuit board. This means that only three work steps are required to manufacture the entire device: the injection molding of the housing, the plugging of the switching contact elements onto the switching plunger and the insertion of the fully assembled printed circuit board into the housing. This can further simplify and reduce the cost of manufacture.
  • the housing 10 shown in FIGS. 1 and 3 is designed as a housing of a time switch, the illustration of a rear end cover being omitted for simplification.
  • the front side 11 of this housing 10 has a transparent region 12 in the upper section, while the remaining surface is roughened or structured in such a way that it is difficult to see through and the ones behind it Components are not or hardly recognizable.
  • buttons 15 are arranged side by side. These keys 15 and the key surfaces 16 are formed in that a circular area of the front side 11 of the housing 10 is divided into three helical webs 18 by helically arranged slots 17.
  • the webs 18 open out at an approximately circular center 19 on which a switching plunger 20 pointing into the housing interior is integrally formed. In order to achieve a reduction in weight and material while at the same time providing the greatest possible stability, this has a cross-shaped cross section.
  • Its free end 21 is pin-shaped as a plug receptacle and guide member, which will be explained in more detail later.
  • the slots 17 are widened conically towards the inside of the housing, for example at an angle of 30 °.
  • the slots are very narrow towards the front to achieve splash protection, the slot width being 0.1-0.2 mm, for example.
  • the touch surface 16 there is an integrally formed, projecting web 22 which makes it easier to locate the touch surface 16 arranged in one plane with the front side 11 of the housing 10.
  • liquid flowing down is directed around the keys, narrow gaps (not shown) being provided between the webs 22 for this purpose.
  • the injection mold used for the production has raised portions corresponding to the slots 17, so that the housing 10 together with the keys 15 and the switching plunger 20 can be produced from plastic by a single injection process.
  • the slots 17 later, for example by milling. If, after the spraying process, the slits 17 are still closed in their narrow areas, a first actuation is sufficient to break the slits open.
  • a reinforcing web 23 is integrally formed on the inside of the housing 10 between the two keys. This reinforcing web 23 connects the front side 11 to an underside 24. These reinforcing webs 23 are also produced in the single injection process described above.
  • the shape of the housing and the use of the housing can differ from the described one and be varied.
  • the keys can also be arranged on housing parts, which are then attached to the housing or inserted into the housing.
  • the arrangement, number and shape of the keys is also possible in a wide variety.
  • the helical arrangement of the webs can also vary and, for example, be angular, in particular meandering.
  • the number of webs can of course also vary.
  • a metallic switching contact element 25 which is shown enlarged in FIGS. 4 to 6, can be plugged onto the free end 21 of the switching plunger 20. It consists of a cross-shaped resilient metal sheet, two longer resilient arms 26 and two shorter resilient arms 27 being formed. The two longer arms 26 are angled to one side, while the shorter arms 27 form a plane with the central surface of the cross-shaped switching contact member 25. The free ends of the longer arms 26 are slightly bent to form rounded sliding surfaces 28. All four arms 26, 27 are provided with contact elevations 29 pointing to one side. In the area of the attachment lines of the shorter arms 27, slots 30 are provided to improve the spring force. In the center of the cross-shaped switching contact 25 there is a right-angled opening 31 for pushing through the pin-shaped free end 21 of the switching plunger 20. This opening 31 has slots extending in the direction of the longer arms 26, so that two resilient tabs 32 are formed which are used for Fixing at the free end 21 of the switching plunger 20 resiliently against this.
  • the circuit board 14 is arranged behind the buttons 15 so that the free ends 21 of the switching plunger 20 dip into openings 33 of the circuit board, so that guidance of the switching plunger is achieved.
  • the switch contact members 25 rest resiliently on the printed circuit board 14 via their sliding surfaces 28, as is shown in FIG. 5.
  • the contact elevations 29 cannot accidentally come into contact with mating contacts 34, 35 if they are arranged on the printed circuit board 14 as conductor elements according to FIG. 7.
  • the switching plunger 20 is moved against the printed circuit board 14, so that the contact elevations 29 on the longer arm 26 first come into contact with the counter contacts 34 and thereby trigger a switching operation.
  • the switching contact element 25 can also be provided uniformly, for example with four arms, the number of switching operations being determined by the number and arrangement of the counter contacts 34 and 35, respectively.
  • buttons 15 and switching plunger 20 integrally formed on the housing 10 can of course also act on other types of switching contact elements or switching contacts.

Landscapes

  • Push-Button Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Electric Clocks (AREA)
EP87101691A 1987-02-07 1987-02-07 Boîtier ou partie de boîtier possédant au moins une touche d'un interrupteur électrique Expired EP0278018B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE8787101691T DE3760258D1 (en) 1987-02-07 1987-02-07 Casing or part of casing with at least one key of an electrical switch
EP87101691A EP0278018B1 (fr) 1987-02-07 1987-02-07 Boîtier ou partie de boîtier possédant au moins une touche d'un interrupteur électrique
ES87101691T ES2008863B3 (es) 1987-02-07 1987-02-07 Deposito o parte de deposito con al menos una tecla de un interruptorelectrico
AT87101691T ATE44125T1 (de) 1987-02-07 1987-02-07 Gehaeuse oder gehaeuseteil mit wenigstens einer taste eines elektrischen schalters.
GR89400070T GR3000076T3 (en) 1987-02-07 1989-06-15 Casing or part of casing with at least one key of an electrical switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP87101691A EP0278018B1 (fr) 1987-02-07 1987-02-07 Boîtier ou partie de boîtier possédant au moins une touche d'un interrupteur électrique

Publications (2)

Publication Number Publication Date
EP0278018A1 true EP0278018A1 (fr) 1988-08-17
EP0278018B1 EP0278018B1 (fr) 1989-06-14

Family

ID=8196729

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87101691A Expired EP0278018B1 (fr) 1987-02-07 1987-02-07 Boîtier ou partie de boîtier possédant au moins une touche d'un interrupteur électrique

Country Status (5)

Country Link
EP (1) EP0278018B1 (fr)
AT (1) ATE44125T1 (fr)
DE (1) DE3760258D1 (fr)
ES (1) ES2008863B3 (fr)
GR (1) GR3000076T3 (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4128778A1 (de) * 1991-08-29 1993-03-04 Siemens Ag Gehaeuseteil fuer eine vor schadstoffen zu schuetzende elektrische schaltungsanordnung z. b. eines kfz-schliesssystemes
DE4215694A1 (de) * 1992-05-13 1993-12-09 Moto Meter Gmbh Vorrichtung zum Ein- und Ausschalten elektrischer Verbraucher, insbesondere für Anzeigeinstrumente im Armaturenbrett von Kraftfahrzeugen
DE19541380A1 (de) * 1995-11-07 1997-05-15 Teves Gmbh Alfred Schalter mit auf die Leiterplatte aufgerasteten Schaltmodulen
WO1998011578A1 (fr) * 1996-09-13 1998-03-19 Ericsson Inc. Boitier de dispositif electronique comportant un bouton a ressort actif et procede associe
EP1170763A1 (fr) * 2000-07-05 2002-01-09 Niko Actionneur de contacts
EP1307071A1 (fr) * 2002-08-05 2003-05-02 Phonak Ag Prothese auditive retro-auriculaire comme commutateur
WO2003020095A3 (fr) * 2001-08-30 2003-10-09 Bsh Bosch Siemens Hausgeraete Appareil electromenager pour la cuisine
EP1545177A1 (fr) * 2003-12-19 2005-06-22 Electrolux Home Products Corporation N.V. Cadre de centrage
EP1555586A2 (fr) 2004-01-15 2005-07-20 Diehl AKO Stiftung & Co. KG Montre commutateur pour appareils ménagers
US7039208B2 (en) 2002-08-05 2006-05-02 Phonak Ag Behind-the-ear housing functioning as a switch
DE10029678B4 (de) * 1999-06-25 2006-06-08 Yoshida Kogyo Co., Ltd. Verfahren zur Herstellung eines Gehäusekastens
EP1753280A3 (fr) * 2005-07-18 2009-06-17 Helmut Prager Structure enveloppant un circuit imprimé
DE102008041966A1 (de) * 2008-09-10 2010-03-11 BSH Bosch und Siemens Hausgeräte GmbH Hausgerätevorrichtung
DE102010019441A1 (de) * 2010-05-05 2011-11-10 Hydrometer Gmbh Tastschalter

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1219295A (fr) * 1958-12-22 1960-05-17 Interrupteur étanche pour circuit électrique
FR2285697A1 (fr) * 1974-09-23 1976-04-16 Xerox Corp Dispositif de commutation
DE2747536A1 (de) * 1977-10-22 1979-04-26 Diehl Gmbh & Co Gehaeuse fuer ein elektrisch betriebenes geraet mit einer anzeigeeinrichtung, insbesondere digitalanzeigeeinrichtung
GB2068643A (en) * 1980-02-04 1981-08-12 Rogers Corp Electric switch assembly and keyboard device
DE8602882U1 (de) * 1986-02-05 1986-04-03 Preh, Elektrofeinmechanische Werke Jakob Preh Nachf. Gmbh & Co, 8740 Bad Neustadt Elektrisches Handschaltgerät

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1219295A (fr) * 1958-12-22 1960-05-17 Interrupteur étanche pour circuit électrique
FR2285697A1 (fr) * 1974-09-23 1976-04-16 Xerox Corp Dispositif de commutation
DE2747536A1 (de) * 1977-10-22 1979-04-26 Diehl Gmbh & Co Gehaeuse fuer ein elektrisch betriebenes geraet mit einer anzeigeeinrichtung, insbesondere digitalanzeigeeinrichtung
GB2068643A (en) * 1980-02-04 1981-08-12 Rogers Corp Electric switch assembly and keyboard device
DE8602882U1 (de) * 1986-02-05 1986-04-03 Preh, Elektrofeinmechanische Werke Jakob Preh Nachf. Gmbh & Co, 8740 Bad Neustadt Elektrisches Handschaltgerät

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4128778A1 (de) * 1991-08-29 1993-03-04 Siemens Ag Gehaeuseteil fuer eine vor schadstoffen zu schuetzende elektrische schaltungsanordnung z. b. eines kfz-schliesssystemes
DE4215694A1 (de) * 1992-05-13 1993-12-09 Moto Meter Gmbh Vorrichtung zum Ein- und Ausschalten elektrischer Verbraucher, insbesondere für Anzeigeinstrumente im Armaturenbrett von Kraftfahrzeugen
DE19541380A1 (de) * 1995-11-07 1997-05-15 Teves Gmbh Alfred Schalter mit auf die Leiterplatte aufgerasteten Schaltmodulen
WO1998011578A1 (fr) * 1996-09-13 1998-03-19 Ericsson Inc. Boitier de dispositif electronique comportant un bouton a ressort actif et procede associe
DE10029678B4 (de) * 1999-06-25 2006-06-08 Yoshida Kogyo Co., Ltd. Verfahren zur Herstellung eines Gehäusekastens
EP1170763A1 (fr) * 2000-07-05 2002-01-09 Niko Actionneur de contacts
US7193171B2 (en) 2001-08-30 2007-03-20 Bsh Bosch Und Siemens Hausgeraete Gmbh Electrical kitchen appliance
WO2003020095A3 (fr) * 2001-08-30 2003-10-09 Bsh Bosch Siemens Hausgeraete Appareil electromenager pour la cuisine
EP1307071A1 (fr) * 2002-08-05 2003-05-02 Phonak Ag Prothese auditive retro-auriculaire comme commutateur
US7039208B2 (en) 2002-08-05 2006-05-02 Phonak Ag Behind-the-ear housing functioning as a switch
EP1545177A1 (fr) * 2003-12-19 2005-06-22 Electrolux Home Products Corporation N.V. Cadre de centrage
EP1555586A2 (fr) 2004-01-15 2005-07-20 Diehl AKO Stiftung & Co. KG Montre commutateur pour appareils ménagers
EP1555586A3 (fr) * 2004-01-15 2008-06-04 Diehl AKO Stiftung & Co. KG Montre commutateur pour appareils ménagers
EP1753280A3 (fr) * 2005-07-18 2009-06-17 Helmut Prager Structure enveloppant un circuit imprimé
DE102008041966A1 (de) * 2008-09-10 2010-03-11 BSH Bosch und Siemens Hausgeräte GmbH Hausgerätevorrichtung
DE102010019441A1 (de) * 2010-05-05 2011-11-10 Hydrometer Gmbh Tastschalter
DE102010019441B4 (de) * 2010-05-05 2011-12-29 Hydrometer Gmbh Tastschalter

Also Published As

Publication number Publication date
DE3760258D1 (en) 1989-07-20
EP0278018B1 (fr) 1989-06-14
ES2008863B3 (es) 1989-08-16
ATE44125T1 (de) 1989-06-15
GR3000076T3 (en) 1990-10-31

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