EP0952597A1 - Keyboard for the input of control commands - Google Patents

Keyboard for the input of control commands Download PDF

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Publication number
EP0952597A1
EP0952597A1 EP99107090A EP99107090A EP0952597A1 EP 0952597 A1 EP0952597 A1 EP 0952597A1 EP 99107090 A EP99107090 A EP 99107090A EP 99107090 A EP99107090 A EP 99107090A EP 0952597 A1 EP0952597 A1 EP 0952597A1
Authority
EP
European Patent Office
Prior art keywords
keyboard
bearing plate
keys
mat
switching
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
EP99107090A
Other languages
German (de)
French (fr)
Other versions
EP0952597B1 (en
Inventor
Meinolph Kaufmann
Ernst Schwarz
Hugo Felder
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.)
Inventio AG
Original Assignee
Inventio AG
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 Inventio AG filed Critical Inventio AG
Priority to EP99107090A priority Critical patent/EP0952597B1/en
Publication of EP0952597A1 publication Critical patent/EP0952597A1/en
Application granted granted Critical
Publication of EP0952597B1 publication Critical patent/EP0952597B1/en
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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/004—Collapsible dome or bubble
    • H01H2215/006—Only mechanical function
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/004—Collapsible dome or bubble
    • H01H2215/008—Part of substrate or membrane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/008—Actuators other then push button
    • H01H2221/016—Lever; Rocker
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/036—Return force
    • H01H2221/044—Elastic part on actuator or casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/05—Force concentrator; Actuating dimple
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/064—Limitation of actuating pressure
    • 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
    • H01H2223/00—Casings
    • H01H2223/042—Casings mounted in conventional keyboard
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/034—Positioning of layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/062—Maintenance or repair facilities
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2231/00—Applications
    • H01H2231/03—Elevator
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2233/00—Key modules
    • H01H2233/002—Key modules joined to form button rows
    • H01H2233/004—One molded part

Definitions

  • the invention relates to a keyboard for entering control commands, such as those used in particular for call entry in elevators.
  • a keyboard for entering control commands has become known from US Pat. No. 5,664,667, in which a switch mat is equipped with buttons which are placed on a print provided with electrical switch contacts and circuits.
  • the buttons have switching cams equipped with contacts that act directly on the corresponding contacts of the print when a button is pressed and can thus trigger a control command.
  • the contact is triggered by directly touching the contacted switching cam of the button with the print or. with the contact area on the print. Due to the open construction of this keyboard, moisture can penetrate between the switch mat and the print provided with conductor tracks and switch contacts. This leads to rapid corrosion and / or oxidation of the switch contacts and conductor tracks and can consequently lead to short circuits and thus to an unsatisfactorily short lifespan of the keyboard. Furthermore, the force exerted when the keys are operated is transferred directly to the contact surface of the print and, if the force is too great, it can be intentional or unintentional to destroy the keyboard.
  • the invention has for its object to provide a keyboard for entering control commands of the type mentioned, which does not have the aforementioned disadvantages.
  • the advantages achieved by the invention are essentially to be seen in the fact that the switching process to be triggered by buttons takes place in a closed unit in the form of a bearing plate which comprises a keyboard mat and a membrane keyboard, the switching contacts being located in the membrane keyboard sealed against moisture.
  • the call is recorded in the moisture-proof membrane keyboard and the switch cams on the keyboard mat only have a trigger function.
  • the closed unit in the form of the bearing plate also makes installation considerably easier, since the keyboard mat and the membrane keyboard can be pre-assembled in the bearing plate at the factory and only a keypad has to be attached on site.
  • buttons placed on the closed unit are combined into a keypad by means of film hinges and are each provided with a stop that acts on the bearing plate, so that the key stroke is limited by the stop after the contact has been triggered, even if the button is pressed too hard.
  • FIG. 1 shows a view of a membrane keyboard 1.
  • This membrane keyboard 1 is sealed against the effects of moisture and is provided, for example, with fifteen contacts 2.
  • the number of contacts 2 can be freely selected depending on the size or the desired number of keyboard signals to be triggered.
  • the contacts 2 each have two contact surfaces 3, which are separated from one another by an air or gas cushion and form a so-called contact chamber, this air or gas cushion representing the switching path. If mechanical pressure is now exerted on a contact 2, the air or gas cushion is pressed together until the two contact surfaces 3 touch and the desired signal is triggered. After the pressure on contact 2 has ended, the air or gas cushion expands back into the starting position and contact 2 is opened again.
  • Contact chambers are connected to one another via connection channels (not shown in the figure) for the purpose of pressure equalization and thereby improve the switching behavior.
  • This membrane keyboard 1 or the contacts 2 separated by an air or gas cushion are particularly characterized by the long service life (a few million switching operations) and the inexpensive manufacture.
  • conductor tracks (not shown) are inserted in the membrane keyboard 1 in FIG. 1 and are led out of the contacts 2 via a tongue 4 in order to be able to process the signals in an electronics or control unit.
  • the seal against moisture and the isolated triggering of contacts protect the contacts 2 and the electrical connections in the form of, for example, conductor tracks or circuits against contamination, corrosion or oxidation.
  • Openings 6 are provided in order to position the membrane keyboard 1 precisely in a bearing plate or bearing pocket 5 shown according to FIGS. 3a and 3b. These openings 6 are arranged in such a way that they fit over pins attached to the bearing pocket 5 and the membrane keyboard 1 is thus fixed.
  • FIG. 2a shows the view and FIG. 2b shows the side elevation of a keyboard mat 10, which is preferably made of silicone rubber or a material with similar properties.
  • the keyboard mat 10 has switching cams 11, the number and positions of which correspond to the contacts 2 of the membrane keyboard 1. Openings 12 are also provided on the keyboard mat 10, so that the keyboard mat 10 is positioned over the pins of the bearing plate 5 and the switching cams 11 lie over the contacts 2 of the membrane keyboard 1.
  • FIG 2c shows an enlarged section of a switching cam 11 according to Figures 2a and 2b.
  • the switching cam 11 essentially consists of a switching element 13 and a dome 14.
  • the domes 14 of the switching cams 11 are each constructed in such a way that a defined switching point for the switching element 13 is given. This means that the dome 14 has a precisely defined sticking point or a tipping point, which is overcome with a certain force on the switching cam 11.
  • the switching element 13 is then on the underlying contact 2, respectively. pressed the contact surfaces 3 of the membrane keyboard 1 and thus triggers a signal.
  • the keyboard mat 10 has cutouts 17 in the area of the switching cams 11 or the domes 14.
  • the switching element 13 can be pressed onto the underlying contact 2 of the membrane keyboard 1.
  • this construction differs fundamentally in that the switching element 13 is not provided with a contact surface or a contact pill, but only has the function of triggering a call.
  • the actual call detection takes place in the sealed membrane keyboard 1 by pressing the two contact surfaces 3 together.
  • FIG. 3a shows a view
  • FIG. 3b shows a side elevation of a bearing plate or bearing pocket 5.
  • This bearing plate 5 has the task of receiving and fixing the membrane keyboard 1 and the keyboard mat 10.
  • the bearing plate 5 consists of an upper part 20 and a lower part 21, which are connected to one another via a film hinge 22. Upper part 20 and lower part 21 are in one piece, so that the entire storage pocket 5 can be produced in one piece in an injection molding tool.
  • the lower part 21 has ribs 28 in the form of webs up to the rear wall, which serves both for stiffening the bearing plate 5 and also for dissipating force when the buttons are pressed too hard.
  • the upper part 20 contains pins 23, the spacing of which corresponds to that of the openings 6 of the membrane keyboard and that of the openings 12 of the keyboard mat 10. Furthermore, openings 24 are provided on the upper part 20, the spacing of which corresponds to that of the switching cams 11 of the keyboard mat 10. This Openings 24 serve to establish the connection between the switching cams 11 and the keys of the keypad 16.
  • the bearing plate 5 can be closed. As indicated in FIG. 3b with an arrow, the bearing plate 5 is closed by the lower part 21 being folded onto the upper part 20 via the film hinge 22.
  • a closure is provided which allows a one-time closure or a closure can be used which can be opened again for maintenance.
  • cams 25 with a conical tip can be arranged on the upper part, which fit into holes 26 on the lower part 21, the diameter of the holes 26 being slightly smaller than the largest diameter of the conical tip of the cam 25.
  • the closed storage plate or storage bag 5 represents a complete, protected and functional unit and also considerably simplifies assembly, since the keyboard mat 10 and the membrane keyboard 1 can already be factory-assembled in the storage plate 5 and only one on site as in FIGS. 4a and b described keypad 16 must be placed.
  • fastening holes 27 are provided on the upper part 20 and on the lower part 21, which lie one above the other in the closed state of the bearing plate 5.
  • FIG. 4a shows a side view
  • FIG. 4b shows a view of a keypad 16.
  • This keypad 16 as it is can be used in particular in an elevator system, for example a numeric keypad with further additional functions such as a handicapped key etc., is made in one piece and consists of keys 30 and a frame element 31. Film hinges 32 firstly connect the keys 30 to the frame element 31, for others enable the switching movement of the keys 30.
  • the key block 16 can consist entirely of plastic, the keys 30 being provided with plastic-injected symbols and / or numbers.
  • the actual keys 30 can consist of metal, for example of die-cast zinc, with plastic-injected numbers and symbols, the remaining elements, such as the frame element 31 and the film hinge 32, being made of plastic.
  • Fastening pins 33 are attached to the back of the keypad 16, by means of which the keypad 16 can be snapped onto the closed bearing plate 5 by pressing the fastening pins 33 into the associated fastening holes 27 of the bearing plate 5.
  • a switching strip 34 on the back of each button 30 establishes the connection to the corresponding switching cam 11 of the keyboard mat 10 when a button is pressed, through which the call is finally triggered on the contact 2 of the membrane keyboard 1.
  • a stop 35 has the task of limiting the switching distance to the switching cams 11 and in order to prevent the keyboard mat 10 or the membrane keyboard 1 from being destroyed if the force exerted on the push button 30 by the stop 35 acting on the outside of the closed bearing plate 5.
  • Figure 5 shows a perspective view of the entire keyboard.
  • This closed unit can be preassembled and installed in the terminal in production in a short time, and, if necessary, delivered directly to the construction site as a spare part. Time can thus be saved during assembly and, in addition, the membrane keyboard 1 and the keyboard mat 10 are protected against damage by the closed bearing plate 5.
  • Another advantage is that no additional fasteners are required to assemble the keyboard.
  • only the keypad 16 has to be snapped onto the bearing plate 5.

Abstract

The foil keyboard (1) incorporating electrical contacts and the keyboard mat (10) are housed in a closed unit in the form of a bearing plate (5). The keys (30) are united in a keyboard panel (16) which is mounted on the bearing plate.

Description

Die Erfindung betrifft eine Tastatur zur Eingabe von Steuerbefehlen, wie sie insbesondere auch für die Rufeingabe bei Aufzügen Verwendung findet.The invention relates to a keyboard for entering control commands, such as those used in particular for call entry in elevators.

Aus der US 5,664,667 ist eine Tastatur zur Eingabe von Steuerbefehlen bekanntgeworden, bei der eine Schaltmatte mit Tastern ausgerüstet ist, die auf einen mit elektrischen Schaltkontakten und Schaltkreisen versehenen Print gelegt wird. Die Taster weisen mit Kontakten bestückte Schaltnocken auf, die bei einem Tastendruck direkt auf die zugehörigen Kontakte des Prints wirken und so einen Steuerbefehl auslösen können.A keyboard for entering control commands has become known from US Pat. No. 5,664,667, in which a switch mat is equipped with buttons which are placed on a print provided with electrical switch contacts and circuits. The buttons have switching cams equipped with contacts that act directly on the corresponding contacts of the print when a button is pressed and can thus trigger a control command.

Bei der vorstehend beschriebenen Tastatur erfolgt die Kontaktauslösung durch eine direkte Berührung des kontaktierten Schaltnockens des Tasters mit dem Print resp. mit der Kontaktfläche auf dem Print. Aufgrund der offenen Konstruktion dieser Tastatur kann Feuchtigkeit zwischen die Schaltmatte und den mit Leiterbahnen und Schaltkontakten versehenen Print eindringen. Dies führt zu einer schnellen Korrosion und/oder Oxidation der Schaltkontakte und Leiterbahnen und kann in der Folge zu Kurzschlüssen und somit zu einer unbefriedigend kurzen Lebensdauer der Tastatur führen. Weiter wird die bei der Bedienung der Tasten aufgebrachte Kraft direkt auf die Kontaktfläche des Prints übertragen und kann bei zu grosser Krafteinwirkung beabsichtigt oder auch unbeabsichtigt zur Zerstörung der Tastatur führen.In the keyboard described above, the contact is triggered by directly touching the contacted switching cam of the button with the print or. with the contact area on the print. Due to the open construction of this keyboard, moisture can penetrate between the switch mat and the print provided with conductor tracks and switch contacts. This leads to rapid corrosion and / or oxidation of the switch contacts and conductor tracks and can consequently lead to short circuits and thus to an unsatisfactorily short lifespan of the keyboard. Furthermore, the force exerted when the keys are operated is transferred directly to the contact surface of the print and, if the force is too great, it can be intentional or unintentional to destroy the keyboard.

Der Erfindung liegt die Aufgabe zugrunde eine Tastatur zur Eingabe von Steuerbefehlen der eingangs genannten Art vorzuschlagen, welche die vorgenannten Nachteile nicht aufweist.The invention has for its object to provide a keyboard for entering control commands of the type mentioned, which does not have the aforementioned disadvantages.

Diese Aufgabe wird durch die im Patentanspruch 1 gekennzeichnete Erfindung gelöst.This object is achieved by the invention characterized in claim 1.

Die durch die Erfindung erreichten Vorteile sind im wesentlichen darin zu sehen, dass der durch Taster auszulösende Schaltvorgang in einer geschlossenen Einheit in Form einer Lagerplatte stattfindet, die eine Tastaturmatte und eine Folientastatur umfasst, wobei sich die Schaltkontakte in der gegen Feuchtigkeit abgedichteten Folientastatur befinden resp. die Ruferfassung in der gegen Feuchtigkeit abgedichteten Folientastatur stattfindet und die Schaltnocken der Tastaturmatte lediglich Auslösefunktion haben. Die geschlossene Einheit in Form der Lagerplatte stellt zudem eine erhebliche Montageerleichterung dar, da die Tastaturmatte und die Folientastatur bereits fabrikmässig in die Lagerplatte vormontierbar sind und vor Ort lediglich noch ein Tastenblock aufgesetzt werden muss.The advantages achieved by the invention are essentially to be seen in the fact that the switching process to be triggered by buttons takes place in a closed unit in the form of a bearing plate which comprises a keyboard mat and a membrane keyboard, the switching contacts being located in the membrane keyboard sealed against moisture. the call is recorded in the moisture-proof membrane keyboard and the switch cams on the keyboard mat only have a trigger function. The closed unit in the form of the bearing plate also makes installation considerably easier, since the keyboard mat and the membrane keyboard can be pre-assembled in the bearing plate at the factory and only a keypad has to be attached on site.

Durch die in den Unteransprüchen aufgeführten Massnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im Anspruch 1 angegebenen Tastatur zur Eingabe von Steuerbefehlen möglich. Die auf die geschlossene Einheit aufgesetzten Tasten sind mittels Filmscharniere zu einem Tastenblock zusammengefasst und sind jeweils mit einem Anschlag versehen der auf die Lagerplatte wirkt, so dass auch bei zu grosser Krafteinwirkung auf die Taste nach Kontaktauslösung der Tastenhub durch den Anschlag begrenzt wird.The measures listed in the subclaims allow advantageous developments and improvements of the keyboard specified in claim 1 for entering control commands. The buttons placed on the closed unit are combined into a keypad by means of film hinges and are each provided with a stop that acts on the bearing plate, so that the key stroke is limited by the stop after the contact has been triggered, even if the button is pressed too hard.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt und im folgenden näher erläutert. Es zeigen:

Fig.1
eine Ansicht einer Folientastatur,
Fig.2 a,b,c
eine Ansicht und einen Seitenriss einer Tastaturmatte sowie eine vergrössertes Detail eines Schaltnockens,
Fig.3 a,b
eine Ansicht und einen Seitenriss einer Lagerplatte,
Fig.4 a,b
einen Seitenriss und eine Ansicht eines Tastenblockes, und
Fig.5
eine perspektivische Darstellung der gesamten Tastatur.
In the drawing, an embodiment of the invention is shown and explained in more detail below. Show it:
Fig. 1
a view of a membrane keyboard,
Fig. 2a, b, c
a view and a side elevation of a keyboard mat and an enlarged detail of a switch cam,
Fig. 3a, b
a view and a side elevation of a bearing plate,
Fig.4 a, b
a side elevation and a view of a keypad, and
Fig. 5
a perspective view of the entire keyboard.

Fig. 1 zeigt eine Ansicht einer Folientastatur 1. Diese Folientastatur 1 ist gegen Feuchtigkeitseinflüsse abgedichtet und ist beispielsweise mit fünfzehn Kontakten 2 versehen. Die Anzahl Kontakte 2 kann je nach Grösse beziehungsweise der gewünschten Anzahl auszulösender Signale der Tastatur frei gewählt werden. Weiter besitzen die Kontakte 2 jeweils zwei Kontaktflächen 3, die durch ein Luft- oder Gaspolster voneinander getrennt sind und eine sogenannte Kontaktkammer bilden, wobei dieses Luft- oder Gaspolster die Schaltstrecke darstellt. Wird nun auf einen Kontakt 2 mechanisch Druck ausgeübt, wird das Luft- oder Gaspolster soweit zusammengepresst bis sich die beiden Kontaktflächen 3 berühren und das gewünschte Signal ausgelöst wird. Nach Beendung der Druckausübung auf den Kontakt 2 dehnt sich das Luft- oder Gaspolster wieder in die Ausgangsposition zurück und der Kontakt 2 ist wieder geöffnet. Jeweils mehrere, beispielsweise drei, Kontakte 2 resp. Kontaktkammern sind über, in der Figur nicht dargestellte, Verbindungskanäle zwecks Druckausgleich miteinander verbunden und verbessern dadurch das Schaltverhalten. Diese Folientastatur 1 respektive die durch ein Luft- oder Gaspolster getrennten Kontakte 2 zeichnen sich insbesondere durch die lange Lebensdauer (einige Millionen Schaltvorgänge) sowie die kostengünstige Herstellung aus. Weiter sind in der Folientastatur 1 in Figur 1 nicht dargestellte Leiterbahnen eingelegt, die von den Kontakten 2 über eine Zunge 4 herausgeführt werden, um die Signale in einer Elektronik- oder Steuerungseinheit verarbeiten zu können. Durch die Abdichtung gegen Feuchtigkeit und die isolierte Kontaktauslösung sind die Kontakte 2 und die elektrischen Verbindungen in Form von beispielsweise Leiterbahnen oder Schaltkreisen gegen Verschmutzung, Korrosion oder Oxydation geschützt.1 shows a view of a membrane keyboard 1. This membrane keyboard 1 is sealed against the effects of moisture and is provided, for example, with fifteen contacts 2. The number of contacts 2 can be freely selected depending on the size or the desired number of keyboard signals to be triggered. Furthermore, the contacts 2 each have two contact surfaces 3, which are separated from one another by an air or gas cushion and form a so-called contact chamber, this air or gas cushion representing the switching path. If mechanical pressure is now exerted on a contact 2, the air or gas cushion is pressed together until the two contact surfaces 3 touch and the desired signal is triggered. After the pressure on contact 2 has ended, the air or gas cushion expands back into the starting position and contact 2 is opened again. Several, for example three, contacts 2 or. Contact chambers are connected to one another via connection channels (not shown in the figure) for the purpose of pressure equalization and thereby improve the switching behavior. This membrane keyboard 1 or the contacts 2 separated by an air or gas cushion are particularly characterized by the long service life (a few million switching operations) and the inexpensive manufacture. Furthermore, conductor tracks (not shown) are inserted in the membrane keyboard 1 in FIG. 1 and are led out of the contacts 2 via a tongue 4 in order to be able to process the signals in an electronics or control unit. The seal against moisture and the isolated triggering of contacts protect the contacts 2 and the electrical connections in the form of, for example, conductor tracks or circuits against contamination, corrosion or oxidation.

Um die Folientastatur 1 in einer gemäss Figur 3a und Figur 3b gezeigten Lagerplatte oder Lagertasche 5 genau zu positionieren, werden Öffnungen 6 vorgesehen. Diese Öffnungen 6 sind so angeordnet, dass sie über auf der Lagertasche 5 angebrachte Stifte passen und die Folientastatur 1 somit fixiert wird.Openings 6 are provided in order to position the membrane keyboard 1 precisely in a bearing plate or bearing pocket 5 shown according to FIGS. 3a and 3b. These openings 6 are arranged in such a way that they fit over pins attached to the bearing pocket 5 and the membrane keyboard 1 is thus fixed.

Figur 2a zeigt die Ansicht und Figur 2b den Seitenriss einer Tastaturmatte 10, die vorzugsweise aus Silikongummi oder einem Material mit ähnlichen Eigenschaften besteht. Die Tastaturmatte 10 besitzt Schaltnocken 11, deren Anzahl und Positionen mit den Kontakten 2 der Folientastatur 1 übereinstimmt. Auch an der Tastaturmatte 10 sind Öffnungen 12 angebracht, so dass die Tastaturmatte 10 über die Stifte der Lagerplatte 5 positioniert wird und die Schaltnocken 11 über den Kontakten 2 der Folientastatur 1 liegen.FIG. 2a shows the view and FIG. 2b shows the side elevation of a keyboard mat 10, which is preferably made of silicone rubber or a material with similar properties. The keyboard mat 10 has switching cams 11, the number and positions of which correspond to the contacts 2 of the membrane keyboard 1. Openings 12 are also provided on the keyboard mat 10, so that the keyboard mat 10 is positioned over the pins of the bearing plate 5 and the switching cams 11 lie over the contacts 2 of the membrane keyboard 1.

Figur 2c zeigt ein vergrösserter Ausschnitt eines Schaltnockens 11 gemäss den Figuren 2a und 2b. Der Schaltnocken 11 besteht im Wesentlichen aus einem Schaltelement 13 und einem Dom 14. Die Dome 14 der Schaltnocken 11 sind jeweils so konstruiert, dass ein definierter Schaltpunkt für das Schaltelement 13 gegeben ist. Das heisst, dass der Dom 14 einen genau definierten Knackpunkt beziehungsweise einen Umkipppunkt aufweist, der bei einer bestimmten Krafteinwirkung auf den Schaltnocken 11 überwunden wird. Das Schaltelement 13 wird dann auf den darunterliegenden Kontakt 2 resp. die Kontaktflächen 3 der Folientastatur 1 gedrückt und löst somit ein Signal aus. Um die Rufauslösung durch das Schaltelement 13 zu ermöglichen, weist die Tastaturmatte 10 im Bereich der Schaltnocken 11 beziehungsweise der Dome 14 Aussparungen 17 auf. Somit kann das Schaltelement 13 auf den darunterliegenden Kontakt 2 der Folientastatur 1 gedrückt werden.Figure 2c shows an enlarged section of a switching cam 11 according to Figures 2a and 2b. The switching cam 11 essentially consists of a switching element 13 and a dome 14. The domes 14 of the switching cams 11 are each constructed in such a way that a defined switching point for the switching element 13 is given. This means that the dome 14 has a precisely defined sticking point or a tipping point, which is overcome with a certain force on the switching cam 11. The switching element 13 is then on the underlying contact 2, respectively. pressed the contact surfaces 3 of the membrane keyboard 1 and thus triggers a signal. In order to enable the call to be triggered by the switching element 13, the keyboard mat 10 has cutouts 17 in the area of the switching cams 11 or the domes 14. Thus, the switching element 13 can be pressed onto the underlying contact 2 of the membrane keyboard 1.

Gegenüber herkömmlichen Tastaturen unterscheidet sich diese Konstruktion grundsätzlich darin, dass das Schaltelement 13 nicht mit einer Kontaktfläche oder einer Kontaktpille versehen ist, sondern lediglich die Funktion der Rufauslösung hat. Die eigentliche Ruferfassung findet in der abgedichteten Folientastatur 1 durch ein Zusammendrücken der beiden Kontaktflächen 3 statt.Compared to conventional keyboards, this construction differs fundamentally in that the switching element 13 is not provided with a contact surface or a contact pill, but only has the function of triggering a call. The actual call detection takes place in the sealed membrane keyboard 1 by pressing the two contact surfaces 3 together.

Figur 3a zeigt eine Ansicht und Figur 3b einen Seitenriss einer Lagerplatte oder Lagertasche 5. Diese Lagerplatte 5 hat die Aufgabe die Folientastatur 1 und die Tastaturmatte 10 aufzunehmen und zu fixieren. Die Lagerplatte 5 besteht aus einem Oberteil 20 und einem Unterteil 21, die über ein Filmscharnier 22 miteinander verbunden sind. Oberteil 20 und Unterteil 21 sind einstückig, so dass die gesamte Lagertasche 5 in einem Spritzgusswerkzeug in einem Stück herstellbar ist. Das Unterteil 21 weist Verrippungen 28 in Form von Stegen bis auf die Rückwand auf, welche sowohl zur Versteifung der Lagerplatte 5 als auch als Kraftableitung bei zu starkem Druck auf die Tasten dient. Das Oberteil 20 enthält Stifte 23, deren Abstandsraster mit dem der Öffnungen 6 der Folientastatur und dem der Öffnungen 12 der Tastaturmatte 10 entspricht. Weiter sind am Oberteil 20 Öffnungen 24 vorgesehen, deren Abstandsraster dem der Schaltnocken 11 der Tastaturmatte 10 entspricht. Diese Öffnungen 24 dienen dazu, die Verbindung zwischen den Schaltnocken 11 und den Tasten des Tastenblockes 16 herzustellen.FIG. 3a shows a view and FIG. 3b shows a side elevation of a bearing plate or bearing pocket 5. This bearing plate 5 has the task of receiving and fixing the membrane keyboard 1 and the keyboard mat 10. The bearing plate 5 consists of an upper part 20 and a lower part 21, which are connected to one another via a film hinge 22. Upper part 20 and lower part 21 are in one piece, so that the entire storage pocket 5 can be produced in one piece in an injection molding tool. The lower part 21 has ribs 28 in the form of webs up to the rear wall, which serves both for stiffening the bearing plate 5 and also for dissipating force when the buttons are pressed too hard. The upper part 20 contains pins 23, the spacing of which corresponds to that of the openings 6 of the membrane keyboard and that of the openings 12 of the keyboard mat 10. Furthermore, openings 24 are provided on the upper part 20, the spacing of which corresponds to that of the switching cams 11 of the keyboard mat 10. This Openings 24 serve to establish the connection between the switching cams 11 and the keys of the keypad 16.

Sind in die Lagerplatte oder Lagertasche 5 zuerst die Tastaturmatte 10 mit den Schaltnocken 11 nach unten und anschliessend die Folientastatur 1 eingelegt und jeweils die Öffnungen 6, 12 über die Stifte 23 geführt und somit fixiert worden, kann die Lagerplatte 5 geschlossen werden. Wie in Figur 3b mit einem Pfeil angedeutet ist, wird die Lagerplatte 5 geschlossen, indem der Unterteil 21 über das Filmscharnier 22 auf den Oberteil 20 zugeklappt wird. Um die Lagerplatte 5 auch im geschlossenen Zustand zu halten und zu Verriegeln wird ein Verschluss vorgesehen der ein einmaliges Schliessen erlaubt oder es kann ein Verschluss verwendet werden der zur Wartung wieder geöffnet werden kann. Beispielsweise können am Oberteil 20 Nocken 25, mit kegelförmiger Spitze, angeordnet werden die in Löcher 26 am Unterteil 21 passen, wobei der Durchmesser der Löcher 26 geringfügig kleiner als der grösste Durchmesser der Kegelspitze des Nockens 25 ist.If the keyboard mat 10 with the switch cams 11 down and then the membrane keyboard 1 are inserted into the bearing plate or bearing pocket 5 and the openings 6, 12 are guided over the pins 23 and thus fixed, the bearing plate 5 can be closed. As indicated in FIG. 3b with an arrow, the bearing plate 5 is closed by the lower part 21 being folded onto the upper part 20 via the film hinge 22. In order to keep the bearing plate 5 in the closed state and to lock it, a closure is provided which allows a one-time closure or a closure can be used which can be opened again for maintenance. For example, cams 25 with a conical tip can be arranged on the upper part, which fit into holes 26 on the lower part 21, the diameter of the holes 26 being slightly smaller than the largest diameter of the conical tip of the cam 25.

Die geschlossene Lagerplatte oder Lagertasche 5 stellt eine komplette, geschützte und funktionsfähige Einheit dar und erleichtert zudem erheblich die Montage, da die Tastaturmatte 10 und die Folientastatur 1 bereits fabrikmässig in die Lagerplatte 5 vormontierbar sind und vor Ort lediglich noch ein wie in den Figuren 4a und b beschriebener Tastenblock 16 aufgesetzt werden muss. Um den Tastenblock 16 auf der Lagerplatte 5 aufzuschnappen, sind am Oberteil 20 und am Unterteil 21 Befestigungslöcher 27 vorgesehen, die im geschlossenen Zustand der Lagerplatte 5 übereinanderliegen.The closed storage plate or storage bag 5 represents a complete, protected and functional unit and also considerably simplifies assembly, since the keyboard mat 10 and the membrane keyboard 1 can already be factory-assembled in the storage plate 5 and only one on site as in FIGS. 4a and b described keypad 16 must be placed. In order to snap the key block 16 onto the bearing plate 5, fastening holes 27 are provided on the upper part 20 and on the lower part 21, which lie one above the other in the closed state of the bearing plate 5.

Figur 4a zeigt einen Seitenriss und Figur 4b eine Ansicht eines Tastenblockes 16. Dieser Tastenblock 16, wie er insbesondere in einer Aufzugsanlage verwendet werden kann, ist beispielsweise eine Zehnertastatur mit weiteren Zusatzfunktionen wie einer Behindertentaste usw., ist einstückig ausgeführt und besteht aus Tasten 30 und einem Rahmenelement 31. Filmscharniere 32 stellen zum einen die Verbindung der Tasten 30 zum Rahmenelement 31 her, zum andern ermöglichen sie die Schaltbewegung der Tasten 30. Der Tastenblock 16 kann vollständig aus Kunststoff bestehen, wobei die Tasten 30 mit Kunststoff-hinterspritzten Symbolen und/oder Zahlen versehen sind. Als weitere Variante können die eigentlichen Tasten 30 aus Metall, beispielsweise aus Zinkdruckguss, mit Kunststoff-hinterspritzen Zahlen und Symbolen bestehen, wobei die übrigen Elemente, wie das Rahmenelement 31 und das Filmscharnier 32 aus Kunststoff sind.FIG. 4a shows a side view and FIG. 4b shows a view of a keypad 16. This keypad 16, as it is can be used in particular in an elevator system, for example a numeric keypad with further additional functions such as a handicapped key etc., is made in one piece and consists of keys 30 and a frame element 31. Film hinges 32 firstly connect the keys 30 to the frame element 31, for others enable the switching movement of the keys 30. The key block 16 can consist entirely of plastic, the keys 30 being provided with plastic-injected symbols and / or numbers. As a further variant, the actual keys 30 can consist of metal, for example of die-cast zinc, with plastic-injected numbers and symbols, the remaining elements, such as the frame element 31 and the film hinge 32, being made of plastic.

An der Rückseite des Tastenblockes 16 sind Befestigungsstifte 33 angebracht, mit Hilfe deren der Tastenblock 16 auf die geschlossene Lagerplatte 5 aufgeschnappt werden kann, indem die Befestigungsstifte 33 in die zugehörigen Befestigungslöcher 27 der Lagerplatte 5 eingedrückt werden.Fastening pins 33 are attached to the back of the keypad 16, by means of which the keypad 16 can be snapped onto the closed bearing plate 5 by pressing the fastening pins 33 into the associated fastening holes 27 of the bearing plate 5.

Eine Schaltleiste 34 an der Rückseite jedes Tasters 30 stellt bei einem Tastendruck die Verbindung zum entsprechenden Schaltnocken 11 der Tastaturmatte 10 her, durch den schliesslich die Rufauslösung auf den Kontakt 2 der Folientastatur 1 erfolgt. Ein Anschlag 35 hat die Aufgabe, die Schaltstrecke auf die Schaltnocken 11 zu begrenzen und um bei zu grosser Krafteinwirkung auf den Taster 30 eine Zerstörung der Tastaturmatte 10 oder der Folientastatur 1 zu verhindern, indem der Anschlag 35 auf die Aussenseite der geschlossenen Lagerplatte 5 wirkt.A switching strip 34 on the back of each button 30 establishes the connection to the corresponding switching cam 11 of the keyboard mat 10 when a button is pressed, through which the call is finally triggered on the contact 2 of the membrane keyboard 1. A stop 35 has the task of limiting the switching distance to the switching cams 11 and in order to prevent the keyboard mat 10 or the membrane keyboard 1 from being destroyed if the force exerted on the push button 30 by the stop 35 acting on the outside of the closed bearing plate 5.

Figur 5 zeigt eine perspektivische Darstellung der gesamten Tastatur. Nach dem Einlegen der Folientastatur 1 und der Tastaturmatte 10 in die offene Lagerplatte 5, wird diese wie mit dem Pfeil angedeutet ist geschlossen und mittels der Nocken 25 verriegelt. Diese geschlossene Einheit kann vormontiert und in der Produktion in kurzer Zeit in das Terminal eingebaut, sowie im Bedarfsfall als Ersatzteil direkt auf die Baustelle geliefert werden. Somit kann während der Montage Zeit eingespart werden und zusätzlich sind die Folientastatur 1 und die Tastaturmatte 10 durch die geschlossene Lagerplatte 5 gegen Beschädigungen geschützt. Weiter wirkt sich auch vorteilhaft aus, dass keine zusätzlichen Befestigungsmittel benötigt werden um die Tastatur zusammenzustellen. Es muss schliesslich nur noch der Tastenblock 16 auf die Lagerplatte 5 aufgeschnappt werden.Figure 5 shows a perspective view of the entire keyboard. After inserting the membrane keyboard 1 and the keyboard mat 10 into the open bearing plate 5, it is closed as indicated by the arrow and locked by means of the cams 25. This closed unit can be preassembled and installed in the terminal in production in a short time, and, if necessary, delivered directly to the construction site as a spare part. Time can thus be saved during assembly and, in addition, the membrane keyboard 1 and the keyboard mat 10 are protected against damage by the closed bearing plate 5. Another advantage is that no additional fasteners are required to assemble the keyboard. Finally, only the keypad 16 has to be snapped onto the bearing plate 5.

Claims (10)

Tastatur zur Eingabe von Steuerbefehlen, wobei die Tastatur zur Eingabe der Steuerbefehle aus elektrischen Kontakten (2), einer Tastaturmatte (10) mit Schaltnocken (11) und Tasten (30) besteht und die Betätigung der Kontakte (2) über die Schaltnocken (11) durch Druck auf die Tasten (30) erfolgt,
dadurch gekennzeichnet,
dass sich eine Folientastatur (1), die die elektrischen Kontakte (2) beinhaltet, und die Tastaturmatte (10) in einer geschlossenen Einheit in Form einer Lagerplatte (5) befinden und dass die Tasten (30) zu einem Tastenblock (16) zusammengefasst und auf die Lagerplatte (5) aufgesetzt sind.Keyboard for entering control commands, the keyboard for entering the control commands consisting of electrical contacts (2), a keyboard mat (10) with switching cams (11) and keys (30) and the actuation of the contacts (2) via the switching cams (11) by pressing the buttons (30),
characterized,
that a membrane keyboard (1) containing the electrical contacts (2) and the keyboard mat (10) are in a closed unit in the form of a bearing plate (5) and that the keys (30) are combined to form a key block (16) and are placed on the bearing plate (5). Tastatur nach Anspruch 1,
dadurch gekennzeichnet,
dass die sich in der Folientastatur (1) befindlichen Kontakte (2) aus zwei durch ein Luft- oder Gaspolster getrennte Kontaktflächen (3) bestehen.Keyboard according to claim 1,
characterized,
that the contacts (2) located in the membrane keyboard (1) consist of two contact surfaces (3) separated by an air or gas cushion. Tastatur nach einem der Ansprüche 1 oder 2,
dadurch gekennzeichnet,
dass die Folientastatur (1) gegen Feuchtigkeitseinflüsse abgedichtet ist.Keyboard according to one of claims 1 or 2,
characterized,
that the membrane keyboard (1) is sealed against the effects of moisture. Tastatur nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
dass die, vorzugsweise aus Silikongummi bestehenden Schaltnocken (11) der Tastaturmatte (10) jeweils aus einem Schaltelement (13) und einem Dom (14) bestehen.Keyboard according to one of claims 1 to 3,
characterized,
that the switching cams (11) of the keyboard mat (10), preferably made of silicone rubber, each consist of a switching element (13) and a dome (14). Tastatur nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet,
dass die Lagerplatte (5) aus einem Oberteil (20) und einem Unterteil (21) besteht, die über ein Filmscharnier (22) miteinander verbunden sind.Keyboard according to one of claims 1 to 4,
characterized,
that the bearing plate (5) consists of an upper part (20) and a lower part (21) which are connected to one another via a film hinge (22). Tastatur nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet,
dass der Tastenblock (16) aus einem Rahmenelement (31) und den Tasten (30) besteht, die mittels Filmscharnieren (32) miteinander verbunden sind.Keyboard according to one of claims 1 to 5,
characterized,
that the key block (16) consists of a frame element (31) and the keys (30) which are connected to one another by means of film hinges (32). Tastatur nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet,
dass die Tasten (30) aus Kunststoff oder aus Metall mit Kunstoff-hinterspritzten Zahlen und Symbolen bestehen.Keyboard according to one of claims 1 to 6,
characterized,
that the keys (30) are made of plastic or metal with plastic-injected numbers and symbols. Tastatur nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet,
dass die Tasten (30) mit einem Anschlag (35) versehen sind.Keyboard according to one of claims 1 to 7,
characterized,
that the keys (30) are provided with a stop (35). Tastatur nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet,
dass die Lagerplatte (5) im geschlossenen Zustand verriegelt ist.Keyboard according to one of claims 1 to 8,
characterized,
that the bearing plate (5) is locked in the closed state. Tastatur nach einem der Ansprüche 1 bis 9,
dadurch gekennzeichnet,
dass das Unterteil (21) der Lagerplatte (5) Verrippungen (28) in Form von Stegen bis auf die Rückwand aufweist.Keyboard according to one of claims 1 to 9,
characterized,
that the lower part (21) of the bearing plate (5) has ribs (28) in the form of webs down to the rear wall.
EP99107090A 1998-04-23 1999-04-12 Keyboard for the input of control commands Expired - Lifetime EP0952597B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99107090A EP0952597B1 (en) 1998-04-23 1999-04-12 Keyboard for the input of control commands

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP98810360 1998-04-23
EP98810360 1998-04-23
EP99107090A EP0952597B1 (en) 1998-04-23 1999-04-12 Keyboard for the input of control commands

Publications (2)

Publication Number Publication Date
EP0952597A1 true EP0952597A1 (en) 1999-10-27
EP0952597B1 EP0952597B1 (en) 2006-02-08

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US (1) US6087600A (en)
EP (1) EP0952597B1 (en)
JP (1) JP2000112622A (en)
CN (1) CN1118076C (en)
AT (1) ATE317588T1 (en)
CA (1) CA2269391C (en)
DE (1) DE59913104D1 (en)
ES (1) ES2258303T3 (en)
HK (1) HK1022563A1 (en)
MY (1) MY123279A (en)
SG (1) SG85634A1 (en)

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KR100713414B1 (en) * 2004-11-24 2007-05-04 삼성전자주식회사 Portable communication device with up/down keys
US7629547B2 (en) * 2006-04-24 2009-12-08 Nokia Corporation Illuminating of an electrical device
JP4749404B2 (en) * 2007-10-15 2011-08-17 アール・ビー・コントロールズ株式会社 Switch board holding structure
CN101925971A (en) * 2008-01-24 2010-12-22 松下电器产业株式会社 Key switch and electronic device
CN108025884B (en) * 2015-09-11 2019-12-27 因温特奥股份公司 Operating panel of key switch with water splash prevention for elevator
EP3817169B1 (en) * 2019-10-28 2022-02-09 KONE Corporation Inspection station

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US4532575A (en) * 1981-12-29 1985-07-30 Canon Kabushiki Kaisha Electronic equipment having key input function
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Publication number Publication date
ES2258303T3 (en) 2006-08-16
SG85634A1 (en) 2002-01-15
DE59913104D1 (en) 2006-04-20
MY123279A (en) 2006-05-31
CN1233066A (en) 1999-10-27
CA2269391A1 (en) 1999-10-23
US6087600A (en) 2000-07-11
CA2269391C (en) 2007-02-06
JP2000112622A (en) 2000-04-21
ATE317588T1 (en) 2006-02-15
CN1118076C (en) 2003-08-13
EP0952597B1 (en) 2006-02-08
HK1022563A1 (en) 2000-08-11

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