EP0585536B1 - Hermetisch abgedichtetes Anti-Vandalismus-Tastenfeld - Google Patents

Hermetisch abgedichtetes Anti-Vandalismus-Tastenfeld Download PDF

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Publication number
EP0585536B1
EP0585536B1 EP19930108328 EP93108328A EP0585536B1 EP 0585536 B1 EP0585536 B1 EP 0585536B1 EP 19930108328 EP19930108328 EP 19930108328 EP 93108328 A EP93108328 A EP 93108328A EP 0585536 B1 EP0585536 B1 EP 0585536B1
Authority
EP
European Patent Office
Prior art keywords
push
button
bodies
panel
panel according
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
EP19930108328
Other languages
English (en)
French (fr)
Other versions
EP0585536A1 (de
Inventor
Pier Marco Camandona
Piero Mollo
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.)
PROTO EL Srl
Original Assignee
PROTO EL Srl
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 PROTO EL Srl filed Critical PROTO EL Srl
Publication of EP0585536A1 publication Critical patent/EP0585536A1/de
Application granted granted Critical
Publication of EP0585536B1 publication Critical patent/EP0585536B1/de
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
    • H01H13/02—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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/036—Light emitting elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2223/00—Casings
    • H01H2223/002—Casings sealed
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00—Miscellaneous
    • H01H2239/038—Anti-vandalism

Definitions

  • the present invention relates to an anti-vandal hermetically sealed push-button panel, particularly suitable for application on public equipments such as vending machines, ticket and bank note distributors, telephones, lifts, hoists, and generally all equipments requiring push-button panels with particular mechanical resistance features.
  • push-button panels of the aforementioned equipments are likely to suffer from damages by blunt instruments, fire and corrosive substances. Other damage may derive from penetration of liquid and dust in the interstices between the push-buttons and the panel's escutcheon plate.
  • push-button panels are commonly made of plastic material, so they are rather vulnerable with respect to the above cited damages. In certain cases panels have push-buttons that are raised or anyway offer several points where they can be damaged by keys or blades.
  • GB-A-2046524 discloses an anti-vandal hermetically sealed push-button panel, comprising a plurality of push-buttons for actuating corresponding actuators of a printed circuit.
  • the push-buttons are divided in two separate bodies, an outer body and an inner body operationally facing one of said actuators.
  • the outer push-button bodies are assembled within a superficial metallic escutcheon plate substantially level with the uppermost surfaces of the push-buttons.
  • a resilient sealing membrane is pressed between the two bodies and integral therewith.
  • a backing plate is provided to compress the membrane.
  • Another object of the invention is to provide a panel in which a heating optional system may be fitted for panels bound to be installed in zones where the winter climate is rigorous.
  • a preferred but not-limiting embodiment of the panel according to the present invention is described hereinafter with reference to the accompanying drawing, that is a cross section of the panel, in which only one push-button is illustrated for simplicity.
  • an anti-vandal hermetically sealed push-button panel according to the invention is shown, wherein the scale has been intentionally altered for facilitating the description. Moreover, it is intended that the panel according to the invention comprises a plurality of push-buttons that are identical to the one that is shown and distributed systematically.
  • Each push-button that is indicated as a whole by numeral 10, is divided in two separate bodies, an upper or outer body 10a and an inferior or inner body 10b. Both bodies are preferably obtained out of nylon or other pressed material.
  • the efficiency of the mechanical assembly is attained by means of special gain joint 15a and 15b respectively obtained in the faces 13a and 13b that contact the mambrane 12.
  • Hermetic seal is provided through ultrasonic sealing.
  • the function of the membrane 12 is that of guaranteeing watertight seal with respect to possible infiltration of water, dust or other pulluting agents which could penetrate in the intersticies 14 between the bodies 10a of adjacent push-buttons.
  • the panel comprises a superficial metallic escutcheon plate 16, preferably made of steel or pressure casted and painted alluminium, that surrounds externally the plurality of push-button bodies 10a.
  • the escutcheon plate 16 is inserted within a corresponding opening or seat 17 obtained in a panel 19 being integral with the outer casing of the equipment on which the panel of this invention is fitted.
  • a heating flat resistor 20 can be inserted between the escutcheon plate 16 and the membrane 12 so as to prevent ice from forming near the bush-button bodies 10a and therefore blocking them and render the whole panel inactive.
  • the outer push-button body 10a and the inner one 10b are both advantageously made of nylon or other pressed material. Moreover, a push-button cover plate 21 is fixed on top of each one of the outer bodies 10a.
  • the plates 21 covering the upper surface of the push-buttons and copying the shape thereof are preferably made of stainless steel and have a symbol (number, letter or special symbol) obtained by chemical etching on their upper side.
  • the layer 22 is suitably perforated and shaped so as to contain the inner push-button bodies 10b and form supporting seats 23 for the inferior bases 10c thereof.
  • the layer 22 forms an inferior rectangular hollow 24 surrounding and partially containing a printed circuit 25.
  • the latter comprises a plurality of upper steel convex portions 26, each one located proximate to a push-button 10b and working as actuators for the push-buttons.
  • These actuators, of the type normally used for tactile effect push-buttons are not described herinafter as being well known to a person skilled in the art.
  • a peripheral groove 27 is obtained on the upper edge of the layer 22 for containing a peripheral gasket 29, preferably made of rubber or other suitable material.
  • the gasket 29 is pressed between the layer 22 and the outer panel 19, surrounding the membrane 12 and sealing the push-button panel.
  • the printed circuit 25 and the actuators 26 can be superiorly covered by at least one insulating layer 30 of polyester with emi/RFI shielding.
  • the push-buttons 10 may have inner lights 31 for lightening the symbols from underneath. This possibility can also be used for lightening a single push-button to indicate that it has been selected.
  • the push-button panel according to this invention appears with an outer flat surface, completely metallic and with no considerable asperity or possible hooking points. Besides having the required mechanical resistance, the panel guarantees a good hermetic sealing for the inner parts, avoiding water infiltration and encrustations forming due to dust or mud.
  • the outer surface can resist common cleansing products and is easily washable being substantially smooth.

Landscapes

  • Push-Button Switches (AREA)
  • Elevator Control (AREA)
  • Input From Keyboards Or The Like (AREA)

Claims (6)

  1. Hermetisch abgedichtetes Anti-Vandalismus-Tastenfeld, das eine Vielzahl von Tasten zur Betätigung von entsprechenden Schaltern (26) einer gedruckten Schaltung (25) umfaßt, wobei die Tasten (10) in zwei getrennte Körper geteilt sind, nämlich in einen äußeren Körper (10a) und einen inneren Körper (10b), die einem der Schalter (26) funktional gegenüberliegen, wobei die äußeren Tastenkörper (10a) von einer oberflächlichen metallischen Schildplatte (16) umgeben sind, die mit den obersten Oberflächen (21) der Tasten im wesentlichen in einer Ebene liegt; wenigstens eine elastische Dicht-Membran (12) ist zwischen die Körper (10a, 10b) gepreßt und mit diesen integriert; das Feld umfaßt des weiteren eine innere Schicht (22) aus Antisink-Material;
    dadurch gekennzeichnet,
    daß die Membran (12) darüberhinaus zwischen der umgebenden Platte (16) und der Schicht (22) angeordnet ist, wobei die Schicht (22) geeignet perforiert und geformt ist, um für die inneren Tastenkörper (10b) funktional einen Sitz zu bieten.
  2. Tastenfeld nach Anspruch 1,
    dadurch gekennzeichnet,
    daß die Oberseite der Schicht (22) mit einer peripheren Nut (27) zum Halten einer peripheren Dichtung (29) versehen ist, die die Membran (12) umgibt.
  3. Tastenfeld nach Anspruch 1,
    dadurch gekennzeichnet,
    daß die äußeren Tastenkörper (10a) von Metallplatten (21) bedeckt sind, die vorzugsweise aus Stahl sind und eine Form aufweisen, die deckungsgleich mit der Form der Taste sind.
  4. Tastenfeld nach Anspruch 1,
    dadurch gekennzeichnet,
    daß es in einer Öffnung (17) des Gehäuses des Geräts, welches das Feld steuern soll, befestigt ist; die oberen Oberflächen (16, 21) sind alle metallisch und liegen im wesentlichen in einer Ebene mit dem Gehäuse.
  5. Tastenfeld nach Anspruch 1,
    dadurch gekennzeichnet,
    daß die Tastenkörper (10a, 10b), die vorzugsweise aus Nylon oder anderem gepreßten Material sind, mit der Membran (12) jeweils durch spezielle Verstärkungsgelenke (15a, 15b) zusammengesetzt sind.
  6. Tastenfeld nach Anspruch 5,
    dadurch gekennzeichnet,
    daß die Verbindung zwischen den Körpern (10a, 10b) durch Ultraschall-Abdichtung erfolgt.
EP19930108328 1992-09-02 1993-05-24 Hermetisch abgedichtetes Anti-Vandalismus-Tastenfeld Expired - Lifetime EP0585536B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000213 IT227627Y1 (it) 1992-09-02 1992-09-02 Tastiera a tenuta ermetica antivandalo
ITTO920213U 1992-09-02

Publications (2)

Publication Number Publication Date
EP0585536A1 EP0585536A1 (de) 1994-03-09
EP0585536B1 true EP0585536B1 (de) 1996-09-04

Family

ID=11410207

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930108328 Expired - Lifetime EP0585536B1 (de) 1992-09-02 1993-05-24 Hermetisch abgedichtetes Anti-Vandalismus-Tastenfeld

Country Status (4)

Country Link
EP (1) EP0585536B1 (de)
DE (1) DE69304474T2 (de)
ES (1) ES2091520T3 (de)
IT (1) IT227627Y1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO980212A1 (it) * 1998-03-12 1999-09-12 Proto El Srl Tastiera a tenuta ermetica
JP4298871B2 (ja) * 1999-10-08 2009-07-22 矢崎総業株式会社 表示画面用スイッチ
DE102009020411A1 (de) * 2008-11-21 2010-05-27 Linde Material Handling Gmbh Schalteinrichtung
US9082567B2 (en) 2012-11-09 2015-07-14 Blackberry Limited Method and apparatus pertaining to keypad frets
EP2731118B1 (de) * 2012-11-09 2019-01-09 BlackBerry Limited Verfahren und Vorrichtung im Zusammenhang mit Tastaturgriffleisten

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2046524A (en) * 1979-02-28 1980-11-12 Invader Keyboards Ltd Improvements relating to electric switches
FR2511941B1 (fr) * 1981-09-01 1988-02-05 Telemecanique Electrique Clavier modulaire, etanche, a effet tactile
DE3228290A1 (de) * 1982-07-29 1984-02-02 Rafi Gmbh & Co Elektrotechnische Spezialfabrik, 7981 Berg Drucktaster
DE3245372C2 (de) * 1982-12-08 1986-10-23 Deere & Co., Moline, Ill., US, Niederlassung Deere & Co. European Office, 6800 Mannheim Erntebergungsvorrichtung für Erntemaschinen
GB9004532D0 (en) * 1990-02-28 1990-04-25 Lucas Ind Plc Switch assembly
DE9110444U1 (de) * 1991-08-23 1991-11-21 Werner Turck Gmbh & Co Kg, 5884 Halver, De

Also Published As

Publication number Publication date
ITTO920213V0 (it) 1992-09-02
DE69304474D1 (de) 1996-10-10
ES2091520T3 (es) 1996-11-01
EP0585536A1 (de) 1994-03-09
IT227627Y1 (it) 1997-12-15
DE69304474T2 (de) 1997-04-03
ITTO920213U1 (it) 1994-03-02

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