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WO2008037671A1 - Touche à contact sensitif, unité d'entrée électronique et appareil électronique - Google Patents

Touche à contact sensitif, unité d'entrée électronique et appareil électronique Download PDF

Info

Publication number
WO2008037671A1
WO2008037671A1 PCT/EP2007/060071 EP2007060071W WO2008037671A1 WO 2008037671 A1 WO2008037671 A1 WO 2008037671A1 EP 2007060071 W EP2007060071 W EP 2007060071W WO 2008037671 A1 WO2008037671 A1 WO 2008037671A1
Authority
WO
WIPO (PCT)
Prior art keywords
sensor
light
key
circuit board
conductive rubber
Prior art date
Application number
PCT/EP2007/060071
Other languages
German (de)
English (en)
Inventor
Achim Lerner
Jens Rauber
Frank Trummer
Original Assignee
Siemens Enterprise Communications Gmbh & Co. Kg
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 Siemens Enterprise Communications Gmbh & Co. Kg filed Critical Siemens Enterprise Communications Gmbh & Co. Kg
Publication of WO2008037671A1 publication Critical patent/WO2008037671A1/fr

Links

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
    • H01H13/83—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 characterised by legends, e.g. Braille, liquid crystal displays, light emitting or optical elements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/96—Touch switches
    • H03K17/962—Capacitive touch switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/062—Light conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00—Miscellaneous
    • H01H2239/006—Containing a capacitive switch or usable as such
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/96—Touch switches
    • H03K2217/9607—Capacitive touch switches
    • H03K2217/960755—Constructional details of capacitive touch and proximity switches
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/96—Touch switches
    • H03K2217/9607—Capacitive touch switches
    • H03K2217/960785—Capacitive touch switches with illumination
    • H03K2217/96079—Capacitive touch switches with illumination using a single or more light guides

Definitions

  • the invention relates to a sensor key according to the preamble of claim 1.
  • the invention further relates to an electronic input unit according to the preamble of claim 5.
  • the invention finally relates to an electronic device according to one of claims 9 or 10.
  • Sensor keys with capacitive field transmission are known in principle. They are mounted on a sensor board to which field transmission changes caused by a human finger gripping the sensor button are directed. Such field transmission changes are detected on the sensor circuit board with the associated electronics and, depending on which sensor key the field transmission change has been transmitted from, corresponding reactions are effected by the existing electronics. These reactions may be, for example, corresponding function controls in a respective electronic device, if the field transmission change is detected as a correspondingly predetermined control command. However, they can also be understood, for example, as an input of data information to be stored at a predetermined location in the underlying electronic device.
  • Object of the present invention is therefore, starting from a sensor button of the type mentioned, such Sensor key in such a way that it can be seen when such a sensor key has been pressed.
  • the first part of the object is achieved by a sensor key having the features of the characterizing part of claim 1.
  • the sensor key with capacitive field transmission to a sensor board on a suitable field for field conductive rubber, which is arranged between the sensor button and the sensor circuit board.
  • the conductive rubber has a light channel for a light pipe from the sensor board to the sensor button.
  • the light channel of the conductive rubber is associated with a switched light element, which is mounted at a corresponding location on the sensor circuit board.
  • the sensor key itself is designed to be light-transparent in order to pick up light transmitted from the light channel of the conductive rubber and to be able to light it up by means of this light.
  • the sensor keys associated light elements accordingly can now be visually identified, which sensor button has been pressed.
  • the conductive rubber bundles the capacitive field lines and directs them to a sensor circuit board, which can even be arranged at a distance from the sensor keys.
  • the conductive rubber on a light channel which is formed ranging from the sensor circuit board to the sensor key.
  • the light channel may for example be a simple, straight air duct, so for example, a simple bore. But it can also be filled, for example, with a light guide.
  • the conductive rubber may for example be a conductive silicone.
  • a conductive silicone is obtained for example with a pure silicone, which is mixed with graphite, for example.
  • a switched light element On the sensor circuit board, a switched light element is arranged, which is assigned to the light channel in the conductive rubber. If the light element is switched on, if a field transmission change has been transmitted on the sensor printed circuit board by the associated sensor key, a light line is made towards the relevant sensor key.
  • the sensor key itself is light transparent. It can therefore absorb the incoming light from the light channel and radiate or light up by the recorded light. This makes it visually indicated that this sensor key has been pressed.
  • the sensor key can be made to be illuminated without having to arrange an associated sensor printed circuit board directly below the surface of the sensor key. This increases the constructive freedom.
  • the capacitive field to be transmitted from the conductive rubber is led to the outside of the light channel around the sensor circuit board.
  • the second part of the object is achieved by an electronic input unit having the features of the characterizing part of claim 5.
  • the electronic input unit has a plurality of sensor keys mentioned above, which have the advantage that they are illuminated switched.
  • the third part of the object is achieved by an electronic device having either the features of claim 9 or the features of claim 10.
  • the electronic device either at least a single sensor button, which operates with capacitive field transmission and is switched illuminated, or has an electronic input unit, which comprises at least a single switched illuminable, working with capacitive field transmission sensor button.
  • Actuated sensor keys will be lit on these electronic devices, which indicates which sensor keys have been pressed.
  • the conductive rubber of a sensor key is compressible. This allows the conductive rubber to be easily clamped under slight bias between the sensor key and the sensor board.
  • the advantage here is that there is no air gap between the sensor key and the conductive rubber on the one hand and the conductive rubber and the sensor printed circuit board on the other hand, which may negatively influence the field transmission from the sensor key to the sensor printed circuit board.
  • the light element is a light emitting diode that is small, energy efficient, easy to assemble and cost effective.
  • the sensor key may have a metallized surface, for example, according to the so-called PVD method (Physical Vapor E> eposition method; German: Physical vapor deposition). On the one hand, this improves the field transmission property of the sensor key on the conductive rubber. On the other hand, the metallized layer is so thin applicable that the illumination of the sensor button continues to work. It should be noted that the individual sensor keys are isolated from each other provided with the metallization layer, so that upon actuation of a sensor key is not equal to another sensor button is pressed.
  • a plurality of sensor keys are combined in at least one single block. This has the advantage that a compact design is possible, or that a modular design is possible. This in turn has the advantage that the assembly can be realized more easily.
  • the blocks also have the advantage that they can easily be designed in the manner in which the sensor keys combined in a block are arranged next to one another.
  • Such a sequence can have, for example, a line shape, an arbitrarily curved shape or a circular ring shape.
  • FIG. 1 shows a three-dimensional partial section of a block with sensor keys according to the invention in a sectional view
  • Figure 2 shows a three-dimensional partial section of a
  • FIG. 3 shows a three-dimensional view corresponding to FIG. 2 with a removed housing surface
  • Figure 4 is a three-dimensional view corresponding to
  • Figure 5 is a three-dimensional view corresponding to Figure 4, but now with integrated conductive rubbers for the respective sensor keys
  • FIG. 6 shows a two-dimensional view corresponding to FIG. 2 with a section
  • FIG. 7 shows a section through a partial region of a sensor key block having sensor keys according to the invention at a location which is identified in greater detail in FIG.
  • FIG. 1 shows a display module 1 which has a display area 2 and is combined with a sensor key block 3.
  • the sensor key block 3 comprises a plurality of individual sensor keys 4, which are mounted on an associated sensor circuit board 5.
  • the individual sensor key 4 has a key body 6, which can be tapped with a human finger.
  • the individual key bodies 6 of the individual sensor keys 4 can be combined together in a single shell housing 7.
  • the shell housing 7 together with the other elements for forming the sensor keys 4 forms an aforementioned sensor key block 3rd
  • Sensor key 4 is a respective conductive rubber 8, here for example in the form of a respective individual Leitgummiklotzes arranged.
  • the respective conductive rubber 8 has a light channel 9 which, for example, here is a straight air channel, for example realized by a clean drilling channel.
  • a light element 10 is arranged on the sensor circuit board 5, which is embodied here for example by a so-called LED component.
  • the light element 10 is connected connected on the sensor circuit board 5. It can be switched on and off with the help of the sensor circuit board 5 and the electronics arranged thereon. The light element 10 is switched on when a field transmission change, caused by a finger touch of the corresponding associated key body 6, is reported to the sensor circuit board 5 and the associated corresponding electronics via the light element 10 associated other elements of the total sensor button.
  • the key body 6 is transparent to light. In the case that the light element 10 is turned on, 8 light 11 is passed to the associated key body 6 through the light channel 9 of the relevant conductive rubber. This light is received by the relevant key body 6. If a key body 6 has received light 11, it lights up because of its light-transparent property and it can be seen that a key actuation has taken place on the associated sensor key 4.
  • the function triggered by such a button operation itself is not relevant at this point. However, it could be, for example, a function control or else a data information input.
  • FIG. 2 shows in particular the display area 2 and a plurality of key bodies 6 of respective sensor keys 4 (not shown in detail in FIG. 2).
  • FIG. 2 the arrangement shown in Figure 2 forms a display module 1, which has a housing surface 12, with which the display module 1 is covered.
  • the display area 2 in the housing surface 12 cut free. Further, cutouts 13 are incorporated for a respective penetration of the key body 6 in the housing surface 12.
  • FIG. 3 the object according to FIG. 2 is shown, but with the housing surface 12 removed.
  • the sensor key block 3 with its shell housing 7 and the associated key bodies 6 can be seen in addition to the display area 2 of the display module 1.
  • FIG. 4 shows in particular the housing surface 12 and the sensor key block 3, each with associated key bodies 6, but here in a bottom view. As a result, the shell housing 7 of the sensor key block 3 can be seen particularly well.
  • FIG. 5 shows the article according to FIG.
  • the housing surface 12 and the sensor key block 3 can be seen.
  • the respective conductive rubbers 8 are inserted in the sensor key block 3 for a respective sensor key 4.
  • the light channels 9 in the respective conductive rubbers 8 for the passage of light 11 FIG. 1
  • FIG. 7 shows a section A-A (FIG. 6) which shows a housing surface 12.
  • the housing surface 12 is made for example of an ABS plastic.
  • Figure 7 shows a part of the sensor key block 3 with key bodies 6. Further, a conductive rubber 8 is respectively mounted for a respective sensor key 4 which is respectively mounted on the sensor circuit board 5.
  • the sensor circuit board 5 is in particular an assembly with sensor structure and mounted light elements 10.
  • the light elements 10 are the respective light channels 9 of the respective sensor keys 4 and the respectively associated guide rubber 8 directly assigned.
  • the light elements 10 therefore emit their emitted light 11 directly into the light channel 9 of a respective sensor button 4. This light 11 is passed through the respective light channel 9 on the underside of a turn associated button body 6 on.
  • a touch of a key body 6 with a human finger results in a field transmission change, which is directed with respect to a respective sensor key 4 via the path 14 through the key body 6 and the conductive rubber 8 of the relevant sensor key 4 on the sensor circuit board 5.
  • the display module 1 has a predetermined height 15.
  • the height can be for example 8.2 mm. This height must also be provided by the sensor key block 3, so that the sensor key block 3 can be mounted at a height to the display area 2. Together with the attached sensor key block 3, the display area 2 then forms the display module 1.
  • the conductive rubber 8 By the conductive rubber 8, the aforementioned height 15 is made or given thereby
  • a sensor key block 3 with built-in conductive rubbers 8 for a respective sensor key 4 can also function as an electronic input unit 16 ( Figure 5) to field transmission changes that have capacitive effects and received at appropriate locations, evaluated and converted into corresponding reactions of an associated electronic device will be understood.

Landscapes

  • Input From Keyboards Or The Like (AREA)
  • Push-Button Switches (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)

Abstract

L'invention concerne un caoutchouc de guidage (8), agencé entre la touche à contact sensitif (4) et le circuit imprimé à contact sensitif (5) sur lequel est agencée la touche à contact sensitif (4) entre l'électronique appropriée pour la réception et l'évaluation des modifications de champ reçues et la réaction correspondante en fonction de l'évaluation des modifications de champ reçues, pour reconnaître quand une touche à contact sensitif (4) est actionnée en se basant sur un principe de capacité, par l'intermédiaire duquel le transfert de champ (14) a lieu de la touche à contact sensitif (4) au circuit imprimé à contact sensitif (5). Le caoutchouc de guidage (8) présente en outre un canal de guidage de lumière (9) pour un guidage de lumière du circuit imprimé à contact sensitif (5) vers la touche à contact sensitif (4). A ce canal de guidage de lumière (9) est assigné un élément d'éclairage commuté sur le circuit imprimé à contact sensitif (5), qui est commuté de manière correspondante par l'électronique sur le circuit imprimé à contact sensitif (5). La touche à contact sensitif (4) est conçue de manière transparente à la lumière (11) pour une réception d'une lumière (11) amenée depuis le canal de guidage de lumière (9) du caoutchouc de guidage et pour un éclairage de la touche à contact sensitif (4) en tant que conséquence de la lumière (11) reçue. La touche à contact sensitif peut faire partie d'une unité d'entrée électronique. La touche à contact sensitif (4) ou l'unité d'entrée électronique peut elle-même faire partie d'un appareil électrique.
PCT/EP2007/060071 2006-09-27 2007-09-24 Touche à contact sensitif, unité d'entrée électronique et appareil électronique WO2008037671A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610045712 DE102006045712A1 (de) 2006-09-27 2006-09-27 Sensortaste, elektronische Eingabeeinheit und elektronisches Gerät
DE102006045712.9 2006-09-27

Publications (1)

Publication Number Publication Date
WO2008037671A1 true WO2008037671A1 (fr) 2008-04-03

Family

ID=38878477

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/060071 WO2008037671A1 (fr) 2006-09-27 2007-09-24 Touche à contact sensitif, unité d'entrée électronique et appareil électronique

Country Status (3)

Country Link
DE (1) DE102006045712A1 (fr)
TW (1) TW200828378A (fr)
WO (1) WO2008037671A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009036162A1 (de) * 2009-07-28 2011-02-03 E.G.O. Elektro-Gerätebau GmbH Sensorelementeinrichtung

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009042244B4 (de) * 2009-09-18 2020-09-10 Volkswagen Ag Bedienvorrichtung für ein Fahrzeug
DE102010006777B4 (de) * 2010-02-04 2017-08-24 Diehl Ako Stiftung & Co. Kg Kapazitiver Berührungs- und/oder Annäherungsschalter

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0859467A1 (fr) * 1997-02-17 1998-08-19 E.G.O. ELEKTRO-GERÄTEBAU GmbH Commutateur à effleurement avec capteur à touche
WO2005043760A1 (fr) * 2003-11-03 2005-05-12 E.G.O. Control Systems Gmbh Dispositif de commande pour commander un appareil electrique au moyen d'un commutateur tactile
WO2005101663A1 (fr) * 2004-04-15 2005-10-27 E.G.O. Control Systems Gmbh Dispositif de commande comprenant un commutateur de contact

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004060846B4 (de) * 2004-12-17 2008-12-18 Diehl Ako Stiftung & Co. Kg Kapazitiver Berührungsschalter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0859467A1 (fr) * 1997-02-17 1998-08-19 E.G.O. ELEKTRO-GERÄTEBAU GmbH Commutateur à effleurement avec capteur à touche
WO2005043760A1 (fr) * 2003-11-03 2005-05-12 E.G.O. Control Systems Gmbh Dispositif de commande pour commander un appareil electrique au moyen d'un commutateur tactile
WO2005101663A1 (fr) * 2004-04-15 2005-10-27 E.G.O. Control Systems Gmbh Dispositif de commande comprenant un commutateur de contact

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009036162A1 (de) * 2009-07-28 2011-02-03 E.G.O. Elektro-Gerätebau GmbH Sensorelementeinrichtung
US9048842B2 (en) 2009-07-28 2015-06-02 E.G.O. Elektro-Geraetebau Gmbh Sensor element device for a capacitive proximity switch

Also Published As

Publication number Publication date
TW200828378A (en) 2008-07-01
DE102006045712A1 (de) 2008-04-10

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