WO2021170309A1 - Élément de commande comprenant une surface électroplaquée et un système de détection sensible à la force - Google Patents

Élément de commande comprenant une surface électroplaquée et un système de détection sensible à la force Download PDF

Info

Publication number
WO2021170309A1
WO2021170309A1 PCT/EP2021/050699 EP2021050699W WO2021170309A1 WO 2021170309 A1 WO2021170309 A1 WO 2021170309A1 EP 2021050699 W EP2021050699 W EP 2021050699W WO 2021170309 A1 WO2021170309 A1 WO 2021170309A1
Authority
WO
WIPO (PCT)
Prior art keywords
sensor arrangement
base body
element according
control element
visible side
Prior art date
Application number
PCT/EP2021/050699
Other languages
German (de)
English (en)
Inventor
Felix Alexander Heinzler
Wjatscheslaw WELITSCHKO
Markus Dahlhaus
Ullrich Gutgar
Original Assignee
Bia Kunststoff- Und Galvanotechnik 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 Bia Kunststoff- Und Galvanotechnik Gmbh & Co. Kg filed Critical Bia Kunststoff- Und Galvanotechnik Gmbh & Co. Kg
Publication of WO2021170309A1 publication Critical patent/WO2021170309A1/fr

Links

Classifications

    • 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
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/975—Switches controlled by moving an element forming part of the switch using a capacitive movable element
    • 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
    • H03K2017/9602—Touch switches characterised by the type or shape of the sensing electrodes
    • 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
    • H03K2017/9602—Touch switches characterised by the type or shape of the sensing electrodes
    • H03K2017/9604—Touch switches characterised by the type or shape of the sensing electrodes characterised by the number of electrodes
    • H03K2017/9613—Touch switches characterised by the type or shape of the sensing electrodes characterised by the number of electrodes using two electrodes per touch switch
    • 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

Definitions

  • the present invention relates to an operating element with the features of the preamble of claim 1.
  • Control elements for example in the form of pressure switches or rotary switches in motor vehicles, are often formed from a base body that is manufactured using an injection molding process.
  • This base body can be provided with a galvanic coating if the plastic offers the appropriate conditions.
  • This coating generally has a layer structure which initially comprises a nickel layer, then a copper layer and finally a chromium layer. The chrome layer is then the visible surface, which on the one hand has the optical impression and on the other hand the haptic impression of metal.
  • the operating element can be designed easily and in a variety of ways, for example for mechanical adaptation to electrical switches that carry the operating element in the installed state.
  • An essential development step with such control elements was to selectively coat the surface so that individual areas of the base body were not provided with a metallic surface.
  • Such operating elements and corresponding production methods are known from DE 102 08 674 A1, DE 102 46 695 A1 and patent specification DE 10 2007 015 625 B4. These methods enable symbols to be created on the surface of the control element and, if the base body is transparent in this area, and the control element is also illuminated for better visibility during night-time operation.
  • Such control elements are known in motor vehicles and are used as rotary switches and pressure switches.
  • the publication DE 10 2017 125 446 A1 shows operating elements with sensors that work capacitively and thereby utilize the change in the dielectric constant when the galvanized surfaces are touched.
  • dedicated areas must be formed in the electroplating that can act as electrodes.
  • Flat, uninterrupted galvanic coatings are not suitable for this.
  • exposed areas must be large enough not to shield the electrical fields of the sensors below the electroplating, since otherwise approaching a fingertip would not lead to a detectable change in the sensor. This limits the design options.
  • the base body in an operating element with a base body made of plastic, which has a visible side and a rear side and which comprises at least one galvanizable plastic component, and with an electroplated metal layer applied to the visible side, which covers at least part of the visible side, the base body in one
  • the area carrying the sensor arrangement preferably has a wall thickness of has less than 3 mm
  • the sensor arrangement is a pressure-sensitive capacitive working sensor arrangement, in which a change in the distance between the capacitor elements is detected, the sensor element can be used without interference from the electroplated coating and can be electronically evaluated during operation.
  • the use of capacitively operating sensor foils as a sensor element in such an operating element with a continuously galvanized surface is possible.
  • the sensor arrangement is mechanically connected to the base body after the production and electroplating of the base body, in particular directly positively and / or indirectly with the interposition of a carrier, the sensor arrangement can be detachably connected to the base body without gluing or overmolding.
  • a direct indirect or immediate frictional connection is advantageous for reliable function.
  • the sensor element is attached adhesively or cohesively to the rear of the base body in the area, in particular with reduced thickness, after the production and electroplating of the base body, a quality check of the base body can be carried out before the sensor is installed. As a result, unlike in the prior art, the previously installed sensor components are not discarded in the event of a fault.
  • the galvanic coating can be perforated and / or translucent in the area of the sensor arrangement.
  • a layer facing the rear side of the finished operating element is preferably made of polycarbonate and a layer facing the visible side is made of ABS or an ABS copolymer.
  • the base body is preferably manufactured using the multi-component injection molding process.
  • control element designed in this way has on the one hand the mechanical properties of known control elements, but can largely with one surface that can be freely designed and functionally not only function as a button, but also act as a one-dimensional or two-dimensional sensor field, so that, for example, stroking gestures such as wiping can be recorded on a continuous metallic surface.
  • Such an operating element can also be operated reliably with gloves, without the gloves having to be provided with special conductive fingertips.
  • Unintentional operating errors as can occur with conventional touch fields, for example as a result of the vehicle's own movements while driving, can be avoided by specifically setting signal threshold values for the parameters time and force.
  • FIG. 2 another operating element in a view corresponding to FIG. 1;
  • FIG. 2 another operating element in a view corresponding to FIG. 1;
  • FIG. 3 a further operating element in a view corresponding to FIG. 1 with a central clearance on its visible side;
  • FIG. 4 shows another operating element in a view corresponding to FIG. 1 with an electroplated second injection-molded component in a central area of the visible side;
  • FIG. 5 an operating element in a view corresponding to FIG. 1 with an uncoated decorative film visible on the visible side; FIG. as
  • FIG. 6 Another operating element in a view corresponding to FIG. 1 with a particularly thin-layer structure.
  • an operating element 1 according to the invention is shown in a cross section from the side.
  • a visible side 2 is arranged at the top in this illustration, a rear side 3 points downward.
  • the operating element 1 has a base body 4 which is made from a single component, namely from a galvanically coatable, injection-moldable plastic such as ABS.
  • the outer surface of the base body 2 is fully provided with a galvanically generated coating 5 and thus has a closed metal surface, which is interrupted at most by small, production-related points arranged outside the visible side 2.
  • Such a continuously metallic surface is not suitable for capacitive sensors whose function is based on a change in the dielectric constant when touched.
  • a sensor element 6 that is sensitive to pressure or the action of force is arranged on the rear side 3 of the operating element 1 facing away from the visible side 2. As can be seen from the layer structure, the sensor element 6 is only fastened after the galvanic coating of the base body 4. The sensor element 6 is fastened at this point by means of gluing or hot stamping, so that a permanent and non-positive connection is ensured.
  • a connecting line 7 connects the sensor element 6 to evaluation electronics (not shown).
  • FIG. 2 shows an operating element 1 similar to FIG. 1. Identical or functionally identical elements have the same reference numbers.
  • the base body here has been manufactured using the two-component injection molding process.
  • one component is the galvanically coatable base body 4 made of ABS, which faces the visible side 2.
  • Another component is a layer 8 made of a plastic that cannot be electroplated, for example a polycarbonate (PC), which is sprayed onto the rear side of the ABS base body 4.
  • PC polycarbonate
  • This layer 8 faces the rear side 3 of the operating element 1.
  • the sensor element 6 is attached to the uncoated rear side 3 as described above.
  • the advantages of this layer structure are different mechanical properties of the base body and a different material pairing in the connection area of the sensor element 6.
  • FIG. 3 shows the same layer structure as FIG. 2.
  • an exposure 9 is provided in the visible side 2 of the operating element 1. This release enables the material of the base body 4 to be seen as a symbol in the galvanic coating 5. The symbol can clarify the function of the operating element 1.
  • FIG. 1 Another structure of an operating element 1 is illustrated in FIG.
  • the operating element 1 is constructed similarly to FIG. 3, but a third component 10 was injected in the injection molding process, which is initially surrounded on the outside circumferentially by the ABS base body 4 and protrudes beyond the visible side 2.
  • the component 10 cannot be electroplated.
  • a metal layer is then produced on the ABS base body 4, the thickness of which corresponds to the protrusion of the component 10 over the base body 4, so that the surface on the visible side 2 is essentially free of steps, but carries the component 10 as a visible design element.
  • the component 10 can be colored and / or transparent or translucent. If, for example, the second component 8 and the component 10 are made of a transparent polycarbonate, the polycarbonate can be illuminated and transilluminated from the rear, so that the component 10 represents a luminous symbol on the visible side 2. At the same time, in this embodiment, the component 10 marks the central area of the operating element 1, in which a force acting on the visible side 2 leads to a particularly large electrically evaluable signal from the sensor element 6.
  • FIG. 5 shows a structure similar to FIG. 3, the ABS component that can be electroplated being designed as a thin film 11.
  • Such films are known from the area of injection molding and are colored or colored for production Printing of decorated surfaces used in multi-component parts.
  • An advantage of this embodiment is the greater mechanical resilience of the layer structure compared to FIG. 3, which when actuated with the same leads to a larger evaluable sensor signal force.
  • the film can e.g. B. be an ABS / PC copolymer.
  • FIG. 6 shows an operating element with a layer structure as in FIG. 5 and resulting similar mechanical properties, but with a closed surface on the visible side 2.
  • FIGS. 1, 2 and 6 have in common that the visible side 2 each forms a closed metallic surface which is not suitable for conventional capacitive sensors that react to the above-mentioned change in the dielectric constant when touched.
  • the force-based sensor element 6 reacts to pressure on the visible side 2 in that even a slight deformation leads to a change in capacitance, because the dielectric of the sensor is deformed and the effective distance between the capacitor electrodes changes.
  • the detected external influence on the sensor is therefore purely mechanical.
  • the electrical properties of the control element are not important.
  • the surfaces of the visible sides 2 of the operating elements from FIGS. 1, 2 and 6 can be locally heated, for example by means of a laser, so that tempering colors develop on the metal surface.
  • This laser treatment can be used to create labels or symbols. The resulting heat cannot damage the sensor element 6, since it is not yet mounted at the time of the laser processing.
  • the sensor element 6 can not only comprise a single sensor, but in particular also represent a linear or flat, two-dimensional array. Such sensors are available in film form and can, such as. B. shown in Figure 6 cover the back of a control element in a larger area. If a user is now using one finger a force above the detection threshold of the sensor element 6 moves over the visible side 2 of the operating element 1, the sensor element 6 can pick up the trace of the movement and thus simulate functions that are similar to those of a touchscreen. It is also possible to design the sensor in that one side of the capacitor is formed by the sensor film and the other side by the electroplating surface itself. The operating principle and the advantages achieved remain essentially the same.

Landscapes

  • Injection Moulding Of Plastics Or The Like (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)

Abstract

L'invention concerne un élément de commande (1) ayant un côté visible (2) et un côté arrière (3), ledit élément de commande comprenant : un corps principal en matière plastique qui comporte au moins un composant en matière plastique (4) qui peut être électroplaqué ; et une couche métallique (5) produite par électrodéposition qui est appliquée sur le côté visible et recouvre au moins une partie du côté visible, le corps principal portant au moins un agencement de capteurs (6) tactiles sur son côté arrière, l'agencement de capteurs (6) étant un agencement de capteurs (6) capacitifs sensibles à la pression à l'aide duquel une modification efficace de l'espacement des électrodes de condensateur est détectée.
PCT/EP2021/050699 2020-02-28 2021-01-14 Élément de commande comprenant une surface électroplaquée et un système de détection sensible à la force WO2021170309A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020105312.6A DE102020105312A1 (de) 2020-02-28 2020-02-28 Bedienelement mit galvanisierter Oberfläche und kraftsensitiver Sensorik
DE102020105312.6 2020-02-28

Publications (1)

Publication Number Publication Date
WO2021170309A1 true WO2021170309A1 (fr) 2021-09-02

Family

ID=74556854

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2021/050699 WO2021170309A1 (fr) 2020-02-28 2021-01-14 Élément de commande comprenant une surface électroplaquée et un système de détection sensible à la force

Country Status (2)

Country Link
DE (1) DE102020105312A1 (fr)
WO (1) WO2021170309A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022101006A1 (de) 2022-01-17 2023-07-20 Bia Kunststoff- Und Galvanotechnik Gmbh & Co. Kg Elektrisch sensitives Bedienelement

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10208674A1 (de) 2002-02-28 2003-09-04 Bia Kunststoff Und Galvanotech Verfahren zur Herstellung galvanisch beschichteter Elemente mit hinterleuchtbaren Symbolen
DE10246695A1 (de) 2002-10-07 2004-04-15 Siemens Ag Anzeigefeld und Verfahren zu dessen Herstellung
DE102007015625B4 (de) 2007-03-29 2015-05-07 Bia Kunststoff- Und Galvanotechnik Gmbh & Co. Kg Verfahren zur Herstellung galvanisch beschichteter Bauteile mit durchleuchtbaren oder unbeleuchteten Strukturen und nach dem Verfahren hergestellte Bedien-, Dekor- oder Anzeigeelemente
DE102014201434A1 (de) * 2014-01-27 2015-07-30 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Volumenkompressible kapazitive flächige flexible Sensormatte zur Messung von Druck oder Druckverteilungen und/oder zur Messung oder Detektion von Deformationen
DE102017125446A1 (de) 2017-10-30 2019-05-02 Bia Kunststoff- Und Galvanotechnik Gmbh & Co. Kg Bedienelement mit galvanisierter Oberfläche und kapazitiver Sensorik und Verfahren zu dessen Herstellung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10208674A1 (de) 2002-02-28 2003-09-04 Bia Kunststoff Und Galvanotech Verfahren zur Herstellung galvanisch beschichteter Elemente mit hinterleuchtbaren Symbolen
DE10246695A1 (de) 2002-10-07 2004-04-15 Siemens Ag Anzeigefeld und Verfahren zu dessen Herstellung
DE102007015625B4 (de) 2007-03-29 2015-05-07 Bia Kunststoff- Und Galvanotechnik Gmbh & Co. Kg Verfahren zur Herstellung galvanisch beschichteter Bauteile mit durchleuchtbaren oder unbeleuchteten Strukturen und nach dem Verfahren hergestellte Bedien-, Dekor- oder Anzeigeelemente
DE102014201434A1 (de) * 2014-01-27 2015-07-30 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Volumenkompressible kapazitive flächige flexible Sensormatte zur Messung von Druck oder Druckverteilungen und/oder zur Messung oder Detektion von Deformationen
DE102017125446A1 (de) 2017-10-30 2019-05-02 Bia Kunststoff- Und Galvanotechnik Gmbh & Co. Kg Bedienelement mit galvanisierter Oberfläche und kapazitiver Sensorik und Verfahren zu dessen Herstellung

Also Published As

Publication number Publication date
DE102020105312A1 (de) 2021-09-02

Similar Documents

Publication Publication Date Title
EP3368958B1 (fr) Dispositif de commande composé d'une pièce d'actionnement ayant une surface d'entrée et un actuateur rotatif disposé sur la surface d'entrée
DE102017218243B3 (de) Verfahren zum Herstellen zumindest eines Teils einer berührungssensitiven Bedieneinrichtung, berührungssensitive Bedieneinrichtung und Kraftfahrzeug
DE102007015625B4 (de) Verfahren zur Herstellung galvanisch beschichteter Bauteile mit durchleuchtbaren oder unbeleuchteten Strukturen und nach dem Verfahren hergestellte Bedien-, Dekor- oder Anzeigeelemente
DE102007013078B4 (de) Bedienelement zum Bedienen eines elektrischen Verbrauchers in einem Fahrzeug
DE102011006402A1 (de) Bedienblende eines Hausgerätes mit einem Berührelemente-Folienstreifen sowie Verfahren zur Herstellung dieser Bedienblende
EP3384368A1 (fr) Feuille et procédé de fabrication d'une feuille
EP3542015A1 (fr) Système de détection destiné à l'activation d'au moins une fonction de véhicule
DE102017121896B4 (de) Drehsteller zur Anordnung auf einem kapazitiven Touchscreen oder Touchpad
DE102015101733A1 (de) Türgriffanordnung für ein Kraftfahrzeug
DE102017125446B4 (de) Bedienelement mit galvanisierter Oberfläche und kapazitiver Sensorik und Verfahren zu dessen Herstellung
DE102008049176A1 (de) Bedienblende für ein Haushaltsgerät
DE102015121195B4 (de) Folie sowie Verfahren zur Herstellung einer Folie
WO2021170309A1 (fr) Élément de commande comprenant une surface électroplaquée et un système de détection sensible à la force
EP3496871B1 (fr) Procédé de fabrication d'un panneau en matière plastique muni d'un revêtement, panneau en matière plastique et appareil ménager contenant ce panneau en matière plastique
DE102014100974A1 (de) Auswerteverfahren für Sensorsignale
DE102009007917A1 (de) Kapazitiver Berührungsensor
DE102018129049A1 (de) Eingabevorrichtung für ein Kraftfahrzeug mit einem beweglichen Eingabebereich zur Erkennung einer Eingabe sowie ein Armaturenbrett mit solch einer Eingabevorrichtung
DE102019211845A1 (de) Beheizbare Karosserieelemente
DE102015000480A1 (de) Bedienvorrichtung für ein Kraftfahrzeug mit verschiedenen Bedienbereichen sowie Kraftfahrzeug
DE102022108159A1 (de) Bedienfeld für ein Fahrzeug und Herstellungsverfahren
DE102016001978B4 (de) Kraftfahrzeug mit Bedienkonsole und Verfahren zum Herstellen einer optisch einheitlichen Konsolenoberfläche einer Kraftfahrzeug-Bedienkonsole
DE102009010799A1 (de) Vorrichtung zur Bedienung einer Fahrzeugkomponente und Verfahren zur Ermittlung der Bedienung eines Drehknopfes einer Bedieneinheit durch den Fahrer oder Beifahrer
DE102020118296A1 (de) Bedienfeld für ein Fahrzeug und Verfahren zur Herstellung
DE102016003020A1 (de) Eingabevorrichtung zum Erfassen einer manuellen Betätigung eines Nutzers
DE102014104789A1 (de) Kapazitäts-Betätigungsvorrichtung und Verfahren zum Herstellen derselben

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21703598

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21703598

Country of ref document: EP

Kind code of ref document: A1