EP0810619B1 - Interrupteur à bouton poussoir pour appareils ménagers - Google Patents

Interrupteur à bouton poussoir pour appareils ménagers Download PDF

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Publication number
EP0810619B1
EP0810619B1 EP96108473A EP96108473A EP0810619B1 EP 0810619 B1 EP0810619 B1 EP 0810619B1 EP 96108473 A EP96108473 A EP 96108473A EP 96108473 A EP96108473 A EP 96108473A EP 0810619 B1 EP0810619 B1 EP 0810619B1
Authority
EP
European Patent Office
Prior art keywords
switching
switch
button
circuit board
membrane
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
EP96108473A
Other languages
German (de)
English (en)
Other versions
EP0810619A1 (fr
Inventor
Klaus Imer
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.)
Haschkamp Wolfgang Dipl-Kfm
Original Assignee
Haschkamp Joachim Dipl-Ing
Haschkamp Wolfgang Dipl-Kfm
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 Haschkamp Joachim Dipl-Ing, Haschkamp Wolfgang Dipl-Kfm filed Critical Haschkamp Joachim Dipl-Ing
Priority to DE29609439U priority Critical patent/DE29609439U1/de
Priority to DE59605881T priority patent/DE59605881D1/de
Priority to DK96108473T priority patent/DK0810619T3/da
Priority to AT96108473T priority patent/ATE196384T1/de
Priority to EP96108473A priority patent/EP0810619B1/fr
Publication of EP0810619A1 publication Critical patent/EP0810619A1/fr
Application granted granted Critical
Publication of EP0810619B1 publication Critical patent/EP0810619B1/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
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/705—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
    • 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
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/20—Driving mechanisms
    • 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
    • H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
    • H01H13/56—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state upon the next application of operating force
    • H01H13/562—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state upon the next application of operating force making use of a heart shaped cam
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2201/00—Contacts
    • H01H2201/01—Protective enclosure
    • H01H2201/012—Inert gas in contact space
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2213/00—Venting
    • H01H2213/01—Venting with internal pressure of other switch sites
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2213/00—Venting
    • H01H2213/01—Venting with internal pressure of other switch sites
    • H01H2213/014—Accumulator chamber
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/046—Actuators bistable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/08—Actuators composed of different parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2231/00—Applications
    • H01H2231/012—Household appliance

Definitions

  • the invention relates to a push button switch package according to the preamble of claim 1.
  • Such switch packages with the combination of the features of the preamble of claim 1 are in different Embodiments with a different Number of buttons known.
  • the program switching buttons switch low voltages between 5 volts and 12 volts and currents in the microampere range or are in the milliampere range. Because at the low Voltages and the low flowing through the switch contacts Already slight contaminants flow or oxidation can impair contact Special precautions are taken to ensure reliable Contacting without significant contact resistance guarantee even after prolonged operation. Usually are used to prevent oxidation for the program switches Gold contacts used, but even at the slightest Contamination can fail, causing disruptions in the program flow conditionally.
  • DE-A-27 13 237 is a key element for contactless Switch known, in which on a side wall of a Key body an essentially inwardly acting radiation source and on an opposite side of the key body a detector element matched to the radiation source are arranged, being between the radiation source and the detector does not or for the radiation in question only slightly permeable up and down movable stem is arranged.
  • WO 89/09515 shows a push button switch in which Pushing a button a light guide connection between a light emitting diode and a receiver is made, making contactless a switch-on process can be initiated.
  • EP-A-0 570 870 describes a rotary selector switch an electrically contacted light emitting / receiving device, the actuator being in the beam path engaging coding element is formed is and in the housing or on the actuator Light path between light emitting and light receiving device influencing light reflection or light guide arranged is.
  • Switching foils are also used as program switches, whose galvanic contacts are protected by edge sealing are. However, these switching foils are always as keypads executed so that the switching position is not on the switching film can be recognized and always additionally a signal display was required, which indicates which program was selected.
  • the present invention is based on the object an inexpensive push button switch package to develop for washing machines or drying machines, where the program switching buttons, which are in the microampere range or carry currents in the milliampere range, a reliable one and ensure permanent contact.
  • the task is solved by the im Claim 1 specified features.
  • the switching film becomes dirty or damaged prevents the hermetically sealed switch contacts. This ensures permanent contact without that a change in the contact resistance is to be feared.
  • the invention is based on the finding that a switching film known per se also for permanent contact (during the respective program run) can be achieved if various conditions are met.
  • the Contamination of the contacts is caused by gluing the Switching film prevented with certainty because the contacts against Air access are protected. It is even possible the all around fill the sealed room with an inert protective gas.
  • the contact surfaces are against corrosion and pollution protected, and the function of the switch is guaranteed even with the smallest currents.
  • the spacer film is in the places where the contacts lying, punched out.
  • the individual stamped contact fields are connected by slots that cause that the air or the protective gas between the contact surfaces can dodge. This is important because without this Compensation slots require a much greater force would to put the contact foil on the contact areas of the circuit boards to press. In addition, the springback the contact foil improved.
  • Each program button 10 has six program buttons 10, which are arranged side by side in a housing 12 are, and which act on the contacts of a circuit board 26.
  • Each program button 10 has one stored in the housing 12 Slider 16 on one in the drawing Not shown locking mechanism, for example in the form a heartbeat in two positions, namely the off position 3 and the on position shown in FIG. 4, movable and can be fixed in the two positions.
  • the slide points at its lower end a plunger 18 which is in a recess of the key slide axially movable and by a Compression coil spring 20 is cushioned.
  • the plunger 18 is with Barbs 22 and in the recess of the slider 16th snapped.
  • This sprung plunger 18 acts on the Switching film 24 on the circuit board 26.
  • the circuit board On the circuit board are in the usual way by etching Contact surfaces 28 and the conductor tracks 30 are produced.
  • the Contact areas and the conductor tracks can also be used with a Carbon varnish must be printed.
  • the contact surfaces 28 grip combing into each other, and they are separated by the individual Bridged contact surfaces of the switching film 24 in the pressed state.
  • the contact surfaces 32 of the switching film 24 are through Conductive silver varnish or carbon printing applied.
  • Between the Printed circuit board 26 and switching film 24 is a spacer film 34 added. This spacer film is in those places where the contacts are provided with punching holes 36 which in Diameters are slightly larger than the contact surfaces 32 of the Switching film and the contact surfaces 28 of the circuit board.
  • the individual punch holes 36 are through slots 38 in the Spacer film connected together.
  • the switching film 24 is in the manner shown in FIG. 8 with the contact foil over the entire surface (with the exception of holes 36 and slots 38) glued.
  • the Spacer film 34 with the switching film 24 carried by it glued in such a way that the contact surfaces 32 of the switching film 24 above the switching contact surfaces 28 of the circuit board at a distance come to rest.
  • These three layers 24, 26, 34 form a self-contained, sealed from the outside Laminate with a free space through the punch holes 36 and the slots 38 is determined. This space is with air or filled with an inert gas.
  • the slots 38 cause that the gas in the slots 38 between the contact surfaces can dodge.
  • the spring-loaded plunger presses 18 in the slider 16 onto the contact surface covered by the film 24 32 and press this down until it combs on the interlocking contact surfaces 28 of the circuit board 26 hits and bridges this.
  • the spacer film 24 causes that in the off position the contact surfaces 28th on the circuit board 26 and the contact surfaces 32 of the contact film be kept apart.

Landscapes

  • Push-Button Switches (AREA)
  • Keying Circuit Devices (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)

Claims (4)

  1. Paquet de commutateurs à bouton-poussoir destiné à des appareils électroménagers, en particulier à des lave-linge et des séchoirs, comprenant des boutons-poussoirs qui sont disposés les uns à côté des autres dans une rangée et dont les poussoirs de commutation (16, 18) peuvent être encliquetés dans leur position enfoncée, les boutons-poussoirs appartenant à un premier groupe étant agencés sous la forme de touches de commutation de programme, dont les contacts de commutation agissent sur un microprocesseur, tandis que les boutons appartenant à un deuxième groupe comportent un interrupteur d'alimentation et un interrupteur mécanique de verrouillage de porte et une partie au moins des touches provoque un verrouillage et/ou un déclenchement mutuels, caractérisé par le fait que les touches de commutation de programme du premier groupe agissent sur la surface de contact (32) d'un film de commutation (24) connu en soi et, en position enfoncée, maintiennent cette surface de contact de façon permanente en appui sur des surfaces de contact (28) d'une carte à circuit imprimé (26), ladite carte à circuit imprimé (26) et le film de commutation (24), avec leurs surfaces de contact (32, 28) situées entre eux, étant scellés hermétiquement et un film d'espacement (34), qui présente des trous poinçonnés (36) dans la région des surfaces de contact (32, 28) étant intercalé entre la carte à circuit imprimé (26) et le film de commutation (24).
  2. Paquet de commutateurs à bouton-poussoir selon la revendication 1, caractérisé par le fait que le film d'espacement (34) comporte des chambres de compensation de pression (38) qui communiquent avec les trous poinçonnés (36) et sont formées de fentes (38) qui relient entre eux chaque fois deux trous poinçonnés (36) du film d'espacement (34).
  3. Paquet de commutateurs à bouton-poussoir selon la revendication 1, caractérisé par le fait que les coulisseaux de touche (16) comprennent un poussoir (18) monté sur ressort pour compenser le mouvement de course de retour du mécanisme d'encliquetage et par le fait que le poussoir (18) est agencé sous forme de godet et entoure un ressort hélicoïdal de pression (20) qui prend appui axialement sur le coulisseau de touche (16).
  4. Paquet de commutateurs à bouton-poussoir selon la revendication 3, caractérisé par le fait que le poussoir de touche (18) monté sur ressort peut se déplacer axialement avec des crochets (22) dans un évidement du coulisseau.
EP96108473A 1996-05-28 1996-05-28 Interrupteur à bouton poussoir pour appareils ménagers Expired - Lifetime EP0810619B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE29609439U DE29609439U1 (de) 1996-05-28 1996-05-28 Drucktastenschalter für Haushaltsgeräte
DE59605881T DE59605881D1 (de) 1996-05-28 1996-05-28 Drucktastenschalter für Haushaltsgeräte
DK96108473T DK0810619T3 (da) 1996-05-28 1996-05-28 Tryktastafbryderpakke til husholdningsapparater
AT96108473T ATE196384T1 (de) 1996-05-28 1996-05-28 Drucktastenschalter für haushaltsgeräte
EP96108473A EP0810619B1 (fr) 1996-05-28 1996-05-28 Interrupteur à bouton poussoir pour appareils ménagers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29609439U DE29609439U1 (de) 1996-05-28 1996-05-28 Drucktastenschalter für Haushaltsgeräte
EP96108473A EP0810619B1 (fr) 1996-05-28 1996-05-28 Interrupteur à bouton poussoir pour appareils ménagers

Publications (2)

Publication Number Publication Date
EP0810619A1 EP0810619A1 (fr) 1997-12-03
EP0810619B1 true EP0810619B1 (fr) 2000-09-13

Family

ID=26059017

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96108473A Expired - Lifetime EP0810619B1 (fr) 1996-05-28 1996-05-28 Interrupteur à bouton poussoir pour appareils ménagers

Country Status (4)

Country Link
EP (1) EP0810619B1 (fr)
AT (1) ATE196384T1 (fr)
DE (2) DE29609439U1 (fr)
DK (1) DK0810619T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8404990B2 (en) 2010-06-30 2013-03-26 3M Innovative Properties Company Switch system having a button travel limit feature

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19839811A1 (de) * 1998-09-01 2000-03-02 Delphi Automotive Systems Gmbh Schalteranordnung

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3773997A (en) * 1971-12-13 1973-11-20 Datanetics Corp Key assembly diaphragm switch actuator with overtravel and feel mechanisms
US4376239A (en) * 1980-10-03 1983-03-08 Allen-Bradley Company Industrial membrane switch
US4559426A (en) * 1980-11-03 1985-12-17 Oak Industries Inc. Membrane switch and components having means for preventing creep
US4362954A (en) * 1981-09-25 1982-12-07 The Maytag Company Power-up control for microprocessor based appliance
US4417115A (en) * 1982-03-03 1983-11-22 Amp Incorporated Switch actuating assembly having improved cams and plural modes
US4484038A (en) * 1982-12-01 1984-11-20 Dorman-Bogdonoff Corp. Membrane touch panel having improved conductor construction
DE3407380A1 (de) * 1983-03-03 1984-09-06 General Electric Co., Schenectady, N.Y. Steueranzeigeanordnung fuer einen herd mit einem membranschalter
US4716262A (en) * 1983-10-21 1987-12-29 Nena Morse Vandal-resistant telephone keypad switch
WO1987007759A1 (fr) * 1986-06-02 1987-12-17 Bebié + Co. Clavier pour utilisation dans des conditions difficiles
DE8712230U1 (de) * 1987-09-09 1987-11-19 Siemens AG, 1000 Berlin und 8000 München Schalter für eine Fernsprechstation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8404990B2 (en) 2010-06-30 2013-03-26 3M Innovative Properties Company Switch system having a button travel limit feature

Also Published As

Publication number Publication date
DE59605881D1 (de) 2000-10-19
EP0810619A1 (fr) 1997-12-03
ATE196384T1 (de) 2000-09-15
DE29609439U1 (de) 1996-08-14
DK0810619T3 (da) 2000-11-13

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