EP0952597A1 - Clavier pour l'entrée d'instructions de commande - Google Patents

Clavier pour l'entrée d'instructions de commande 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)
English (en)
Other versions
EP0952597B1 (fr
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/fr
Publication of EP0952597A1 publication Critical patent/EP0952597A1/fr
Application granted granted Critical
Publication of EP0952597B1 publication Critical patent/EP0952597B1/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
    • 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.

Landscapes

  • Push-Button Switches (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Selective Calling Equipment (AREA)
EP99107090A 1998-04-23 1999-04-12 Clavier pour l'entrée d'instructions de commande Expired - Lifetime EP0952597B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99107090A EP0952597B1 (fr) 1998-04-23 1999-04-12 Clavier pour l'entrée d'instructions de commande

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP98810360 1998-04-23
EP98810360 1998-04-23
EP99107090A EP0952597B1 (fr) 1998-04-23 1999-04-12 Clavier pour l'entrée d'instructions de commande

Publications (2)

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

Family

ID=8236051

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99107090A Expired - Lifetime EP0952597B1 (fr) 1998-04-23 1999-04-12 Clavier pour l'entrée d'instructions de commande

Country Status (10)

Country Link
US (1) US6087600A (fr)
EP (1) EP0952597B1 (fr)
JP (1) JP2000112622A (fr)
CN (1) CN1118076C (fr)
AT (1) ATE317588T1 (fr)
CA (1) CA2269391C (fr)
DE (1) DE59913104D1 (fr)
ES (1) ES2258303T3 (fr)
MY (1) MY123279A (fr)
SG (1) SG85634A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6781071B2 (en) * 2000-04-20 2004-08-24 Delphi Technologies, Inc. Electrical switch actuating element
KR100713414B1 (ko) * 2004-11-24 2007-05-04 삼성전자주식회사 업/다운 키들을 구비한 휴대 통신 장치
US7629547B2 (en) * 2006-04-24 2009-12-08 Nokia Corporation Illuminating of an electrical device
JP4749404B2 (ja) * 2007-10-15 2011-08-17 アール・ビー・コントロールズ株式会社 スイッチ基板の保持構造
JP2011510459A (ja) * 2008-01-24 2011-03-31 パナソニック株式会社 キースイッチ及び電子機器
EP3347296B1 (fr) 2015-09-11 2019-11-27 Inventio AG Panneau de fonctionnement pour un ascenseur avec interrupteur à clé protégé contre les projections d'eau
EP3817169B1 (fr) 2019-10-28 2022-02-09 KONE Corporation Station d'inspection

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2068643A (en) * 1980-02-04 1981-08-12 Rogers Corp Electric switch assembly and keyboard device
US4532575A (en) * 1981-12-29 1985-07-30 Canon Kabushiki Kaisha Electronic equipment having key input function
DE19627184A1 (de) * 1995-07-07 1997-01-09 Hosiden Corp Tastatur
US5661279A (en) * 1995-10-26 1997-08-26 Sunarrow Co., Ltd. Pushbutton switch

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4032729A (en) * 1973-12-21 1977-06-28 Rockwell International Corporation Low profile keyboard switch having panel hinged actuators and cantilevered beam snap acting contacts
US4092527A (en) * 1977-01-31 1978-05-30 Texas Instruments Incorporated Calculator with interchangeable keyset
KR900002951B1 (ko) * 1985-01-25 1990-05-03 마쯔시다덴기산교 가부시기가이샤 푸시버튼장치
JPS61288258A (ja) * 1985-06-14 1986-12-18 Nippon Texas Instr Kk 電子機器用ケ−ス
US5481074A (en) * 1992-08-18 1996-01-02 Key Tronic Corporation Computer keyboard with cantilever switch and actuator design
US5734136A (en) * 1996-06-12 1998-03-31 Qualcomm Incorporated Keypad assembly with moisture-excluding seal

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2068643A (en) * 1980-02-04 1981-08-12 Rogers Corp Electric switch assembly and keyboard device
US4532575A (en) * 1981-12-29 1985-07-30 Canon Kabushiki Kaisha Electronic equipment having key input function
DE19627184A1 (de) * 1995-07-07 1997-01-09 Hosiden Corp Tastatur
US5661279A (en) * 1995-10-26 1997-08-26 Sunarrow Co., Ltd. Pushbutton switch
US5664667A (en) * 1995-10-26 1997-09-09 Sunarrow Co., Ltd. Pushbutton switch

Also Published As

Publication number Publication date
SG85634A1 (en) 2002-01-15
DE59913104D1 (de) 2006-04-20
MY123279A (en) 2006-05-31
ATE317588T1 (de) 2006-02-15
CA2269391A1 (fr) 1999-10-23
ES2258303T3 (es) 2006-08-16
EP0952597B1 (fr) 2006-02-08
HK1022563A1 (en) 2000-08-11
CN1118076C (zh) 2003-08-13
US6087600A (en) 2000-07-11
JP2000112622A (ja) 2000-04-21
CA2269391C (fr) 2007-02-06
CN1233066A (zh) 1999-10-27

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