EP1850359B1 - Touche reconfigurable à forme variable et panneau de commande doté d'une telle touche, en particulier pour l'utilisation dans un véhicule - Google Patents

Touche reconfigurable à forme variable et panneau de commande doté d'une telle touche, en particulier pour l'utilisation dans un véhicule Download PDF

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Publication number
EP1850359B1
EP1850359B1 EP07007409A EP07007409A EP1850359B1 EP 1850359 B1 EP1850359 B1 EP 1850359B1 EP 07007409 A EP07007409 A EP 07007409A EP 07007409 A EP07007409 A EP 07007409A EP 1850359 B1 EP1850359 B1 EP 1850359B1
Authority
EP
European Patent Office
Prior art keywords
pushbutton
shape memory
operating panel
key
shape
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.)
Active
Application number
EP07007409A
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German (de)
English (en)
Other versions
EP1850359A2 (fr
EP1850359A3 (fr
Inventor
Sven Dr. Strohband
Arne Dr. Stoschek
Michael T. Derse
Philippe Alessandrini
Venkat Srinivasan
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.)
Volkswagen AG
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Volkswagen AG
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Filing date
Publication date
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Publication of EP1850359A2 publication Critical patent/EP1850359A2/fr
Publication of EP1850359A3 publication Critical patent/EP1850359A3/fr
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Publication of EP1850359B1 publication Critical patent/EP1850359B1/fr
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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
    • H01H13/84—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 ergonomic functions, e.g. for miniature keyboards; characterised by operational sensory functions, e.g. sound feedback
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2209/00—Layers
    • H01H2209/068—Properties of the membrane
    • H01H2209/08—Properties of the membrane with memory properties
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2217/00—Facilitation of operation; Human engineering
    • H01H2217/022—Part of keyboard not operable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/068—Actuators having a not operable condition
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H61/00—Electrothermal relays
    • H01H61/01—Details
    • H01H61/0107—Details making use of shape memory materials

Definitions

  • the invention relates to a key having a central region and an edge region surrounding the central region, wherein the key can be actuated as a pushbutton in an active state and the central region of the key protrudes from a surface plane defined by the edge region, the key being in an inactive state can not be actuated as a pushbutton and the central region of the key extends substantially in the surface plane defined by the edge region.
  • the invention also relates to a control panel for a vehicle having at least one such key.
  • Modern cars have an increasing number of comfort features, such as Audio systems, navigation systems, telecommunication devices, air conditioning control systems, electric seat adjusters, power windows and electric mirror adjustments.
  • the increasing number of vehicle occupant features of a car has generally resulted in an increasing number of buttons, switches, and other controls on the dashboard, center console, and door brackets.
  • a disadvantage of these complex panels is that users are often overwhelmed by the large number of keys. As a result, users have difficulty finding the keys or switches they are looking for.
  • Another disadvantage of conventional keys which are usually formed as a rigid, projecting from a surface of the vehicle interior keys, results from the fact that not all functions controlled by these keys are usually used by the user at the same time. Thus, the user is forced more information than necessary.
  • Another disadvantage of conventional keys is that in low-cost vehicles, non-functional keys or dummy keys are often incorporated as a pre-installed feature for future applications.
  • buttons, switches and controls There are already efforts to mitigate the problems that arise from a large number of buttons, switches and controls.
  • One solution is a touch screen in the dashboard or the front console of the vehicle.
  • a user generally selects a desired function by searching for the function in a menu tree on the touch screen.
  • a disadvantage of touch screens that use a menu tree is that users easily lose track of the complicated maze of selection menus. Although a touch screen reduces the number of buttons, it does not usually simplify the operation of the vehicle.
  • Another disadvantage of touch screens is that they do not convey the sense of touch associated with pressing a key. This is important for the perception of information and also serves as an inherent feedback mechanism.
  • control panel which is designed in the form of a touch-sensitive screen (touch screen).
  • touch screen touch screen
  • several embodiments of the control panel are proposed. It is thus described that the control panel can be moved in regions perpendicular to the control panel surface and has a substructure which cooperates with the control panel.
  • the regional movement of the control panel can be accomplished by mechanical elements of the substructure, which may be formed like a switch. It is also proposed to divide the control panel according to the elements of the substructure in a sectional manner or to cover the elements of the substructure with a continuous, flexible cover. In this case, individual elements of the substructure can be blocked to facilitate operation of the control panel.
  • the object of the invention is therefore to provide a key which overcomes the above-mentioned disadvantages, in particular the disadvantages resulting from a control panel with a large number of keys. Another object is to provide a control panel with at least one such key.
  • the button and the corresponding control panel should be inexpensive, space-saving, user-friendly and the operation less confusing.
  • Such a reconfigurable, shape-changing key which may be active or inactive, allows the user to present only the keys that he needs. This reduces the complexity of traditional keyboards and improves usability.
  • the key according to the present invention makes it possible to provide keys to a need and not by default.
  • At least the central portion of the key comprises a shape memory material having bistability, wherein in the active state of the key, the shape memory material forms a protrusion on the surface plane defined by the edge region, and in the inactive state of the key, the shape memory material is a flat substantially forms in the plane defined by the edge region surface plane extending layer.
  • the shape memory material comprises a shape memory polymer and / or a shape memory alloy.
  • a continuous layer of a shape memory polymer forms the central area of the button as well as the edge area of the button.
  • the shape memory material is a wire mesh made of a shape memory alloy embedded in a stretchable material.
  • a NiTi alloy can be used as a shape memory alloy.
  • the wire mesh made of the shape memory alloy has an ohmic resistance and can be heated by means of an electrical current flowing through the wire mesh, wherein the wire mesh made of the shape memory alloy can be brought into its memory shape by heating to a certain transformation temperature.
  • the shape memory material is a thin film made of a shape memory alloy which forms a layered structure together with a stretchable material.
  • the thin film made of the shape memory alloy may be embedded in a stretchable material or attached to a stretchable material.
  • the shape memory material is a shape memory polymer which can be shaped into its shape of memory by heating to a certain transformation temperature.
  • an internal heating mechanism is integrated into the shape memory polymer.
  • An ohmic resistance can be used, for example, to generate heat.
  • the central portion of the key has a compliant mechanism with two stable states, wherein the central portion of the key in the active state forms a protrusion on the surface plane defined by the edge region and the central portion of the key in the inactive state State is substantially flat and is located substantially at the same height as the edge region.
  • the protrusion preferably has a hemispherical or domed surface.
  • the compliant mechanism includes unitary, flexible or stretchable structures, which structure may deform in three spatial directions and, in response to an input operation, transmit a force or make a movement.
  • a control panel for a vehicle having at least one key according to the present invention.
  • An advantage of such a control panel is that the reconfigurable, shape-changeable key feels like a conventional key in the active state and functions like a conventional key, whereas the key in the inactive state seems to disappear.
  • control panel is provided on a console of the vehicle, a door trim part, a steering wheel and / or a dashboard.
  • the key can be activated and deactivated by means of a control unit connected to the key.
  • control panel has further keys connected to the control unit, and the keys can be activated and deactivated for controlling an electronic subsystem of the vehicle by means of the control unit.
  • the control unit may activate the keys that are used to operate the audio system when the vehicle occupant wants to change the setting of the audio system.
  • the keys for controlling a vehicle subsystem such as e.g. an audio system, a navigation system, a Kiimatmaschines horrungssystems and / or a communication system.
  • control unit is designed so that the key can be activated by voice control.
  • control panel further keys, each with an active and an inactive state, and the control panel is operable in a plurality of modes, wherein in a respective operating mode, a respective subset of the keys is activated, and wherein the modes by means of a can be selected with the control device connected selection device.
  • the selector may be, for example, a central thumbwheel or dial near or on the steering wheel that allows the user to sequentially select the various modes of operation of the vehicle console.
  • the modes of operation may be, for example, the following: (a) all buttons off, (b) audio control buttons on, (c) radio, music and / or video control buttons on, (d) navigation controls on, (e) vehicle climate control buttons on, (f) driver assistance (eg Cruise control) on, (g) infotainment functions on, (h) all buttons on.
  • a display is provided in addition to the key on which a function of the key in the active state can be displayed.
  • Fig. 1 a vehicle console 10 with a Konsonsbedienober Design 12 according to the prior art.
  • the vehicle console 10 includes pushbuttons, rotary knobs, rotary wheels, and rocker switches for controlling various functions.
  • the vehicle console 10 is used for operating the audio system, the air conditioning control system, the navigation system and, depending on the particular vehicle, for operating other vehicle systems.
  • the prior art console control interface 12 shown includes a large center display 14 and two smaller liquid crystal displays 16. Selection buttons 18 are provided adjacent the central display 14, along the left and right sides of the central display 14, respectively. Other selection keys 20 are provided adjacent the central display 14 along the lower edge of the central display 14. The selection keys 18, 20 are rigid, permanently installed selection keys.
  • central display 14 Above the central display 14 is a slot 11 for receiving audio data, video data or other digital data. Push buttons on both sides of the slot 11 are used to control the disk operation. On both sides of the central display 14 are rotary knobs 17, which can be used in a conventional manner for setting a radio receiver, but which can also be used to set other functions of the vehicle.
  • the rotary wheels 19 are provided for adjusting the temperature of a Wegbalsystems.
  • liquid crystal displays 16 which indicate a temperature for the air conditioning control system.
  • rocker switches 21 that can be used to set the speed of a fan for the climate control system.
  • a push-button In the middle of the vehicle console 10 is a push-button to turn on the hazard warning lights.
  • Prior art vehicle console 10 has a variety of control buttons, switches, and buttons. The large number of controls degrades the ease of use for the average user who may be using only a portion of the available controls.
  • Fig. 2 schematically shows a top view of a vehicle console 10 with a console user interface 12 according to the present invention.
  • the console user interface 12 includes a large center display 14 and two smaller liquid crystal displays 16.
  • some of the selection keys are permanent selection keys, just like those in Fig. 1 shown selection buttons from the prior art.
  • those selection keys that are frequently used such as the basic functions of the audio system and the basic functions of the climate control system, are implemented as permanent selection keys.
  • Prior art console control interface 12 includes reconfigurable, shape-changeable keys that replace most of the rigid, prior art selection buttons on the console control interface.
  • the selection keys 22, 24 are designed as reconfigurable keys that can be controlled so that the keys can change their shape from a protruding shape, such as a hemispherical shape, to a flat shape.
  • the location of these shape-changing buttons on the vehicle console 10 is indicated by dashed lines.
  • five reconfigurable contour keys 22 are provided along the left side of the display 14 and five other shape changeable keys 22 are along the right side of the display 14.
  • Other shape-changing keys 24 are provided along the lower edge of the central display 14.
  • the shape-changing keys 22, 24 are connected via connecting lines 27 to a control unit 26.
  • the variable-shape keys 22, 24 are selectively activated or deactivated by the control unit 26.
  • a selector 28 is connected to the control unit 26. The selector 28 allows a user to select among a number of modes of operation of the vehicle console. For example, the user may select an operating mode that activates the control buttons for the audio system or the control buttons for the navigation system.
  • the selector 28 may be, for example, a control knob, a knob, or a thumbwheel that allows the user to sequentially select the various modes of the vehicle console 10.
  • variable-shape keys allow existing vehicle consoles 10 or keypads to be modified to reduce the complexity of these consoles by replacing fixed, prior art keys with shape-changing keys in accordance with the present invention.
  • Replacing conventional soft-key buttons not only simplifies the operation of the console-user interface in accordance with the present invention, but also makes the console-user interface look less cluttered and more elegant and aesthetically pleasing.
  • Another advantage of the shape-changing keys according to the present invention over touch screens is that the tactility of a conventional key is maintained.
  • Deformable keys 22, 24 according to the present invention may be constructed in various ways.
  • Fig. 3 Fig. 12 is a schematic sectional view showing two alternative key states of the shape changeable key 30 according to the present invention.
  • the shape-changing key 30 In a first state, the active state, the shape-changing key 30 is dome-shaped and functions as a pushbutton. The dome 32 projects beyond the console surface 34 and provides the tactile feel of a conventional button.
  • the shape changeable key 30 is substantially flat and flush with the console surface 34, so that the key 30 appears to disappear.
  • the second state of the button is in Fig. 3 shown with dashed lines.
  • the key 30 functions as a pushbutton and performs the switching function of a conventional key when the key 30 is pressed. If the shape changeable key 30 is in the second state, then the key 30 is inoperative and does not perform a switching function.
  • the shape-changing characteristics of the key 30 can be achieved by, for example, embedding a shape memory alloy wire mesh or a shape memory alloy thin film into a stretchable material. The embedded wire mesh or embedded thin film made of the alloy is schematically shown by the dashed line 36. Alternatively, the shape changing properties can be created by molding the key from a shape memory polymer.
  • the shape-changing properties can also be achieved with a compliant mechanism, referred to in the English term compliant mechanism.
  • Fig. 4 Fig. 12 schematically shows a perspective view of a convertible surface 40 forming a shape changeable key according to the present invention.
  • the convertible surface 40 has two stable states. In the first state or in the active state, the convertible surface 40 has a protrusion 42, which forms a key 42.
  • the button or protrusion 42 can be pressed as a conventional button by pressing.
  • the protrusion 42 of the convertible surface 40 corresponds to the in Fig. 3 shown dome 32. In the second state or the inactive state, which would be in Fig. 4 shown convertible surface substantially flat. The protrusion 42 would disappear and thus the key.
  • FIG. 12 shows a schematic plan view of another exemplary embodiment of a button assembly 50 with contoured keys 52, 54, 56.
  • the two circular keys 52, 56 are, for example, 13 mm in diameter and the elongated key 54 is disposed between the two circular keys 52, 56 is, for example, may have a length of 23 mm.
  • the distance between the keys 52, 54, 56 may be 15 mm, for example.
  • button assembly 50 may form part of a vehicle console, a dashboard or other vehicle interior trim panel or may also form part of a steering wheel.
  • Fig. 6 shows a schematic side view of the in Fig. 5
  • the button 52, 54, 56 are designed so that they protrude, for example, 3 mm from the surface 58.
  • the keys 52, 54, 56 are shown in their active state, ie, the keys project above the surface 58 and function as pushbuttons. In the inactive state, the shape of the keys 52, 54, 56 is changed so that the surface 58 of the key assembly 50 is substantially flat and without any protrusions in the area where the keys are located.
  • Fig. 7 schematically shows a perspective view of in Fig. 5 and Fig. 6 shown button arrangement.
  • a keypad that has buttons like the ones in the FIGS. 5 to 7 are shown, preferably has the following features.
  • a key group may have substantially hemispherical keys with a base circle diameter of about 15 mm and a height of about 3 mm. Other key shapes such as triangular, square and oval shapes can be made in the same way as round buttons. All keys have two states as described above, with the keys in one of the states forming a flat surface that is level with the surrounding console. In the other state, the key would then have a hemispherical or other protruding shape than the final key shape. The keys are stable in both states, ie the key states are stable states and there is no power consumption, except when switching between the two states.
  • variable buttons can be activated individually.
  • key groups may be activated according to their operation. For example, a group of buttons for audio functions can be activated together.
  • variable-shape keys can be carried out, for example, by means of a voice control, by means of a central push-button or thumbwheel, with the various modes for the button console can be selected sequentially and which is located close to or on the steering wheel, by means of a control or Excitation via a heating resistor or external thermal excitation.
  • the user may scroll through multiple modes for the console with the shape-changing keys. For example, the user may select the following modes: (a) all buttons off, (b) audio buttons on, (c) radio / music / video control buttons on, (d) navigation buttons on, (e) vehicle climate control buttons on, (f) driver assistance (eg speed control related functions), (g) Infotainment functions on, (h) all keys on.
  • the key When a shape changeable key is turned on, i. is activated, the key is preferably designed so that when pressed an audible click is generated.
  • the shape-changing keys according to the present invention operate like normal keys in cars, for example, the volume is raised upon pressing a "volume-up key".
  • a small key group may be provided, each key having different functions depending on the mode in which the key is used.
  • the nature and feel of the shape-changeable keys is preferably chosen so that the keys are hard enough not to sag excessively, but soft enough are to be able to perform the function of a pushbutton and to be pressed as a key.
  • the outer material or covering layer for the shape-changing keys is generally a stretchable material such as a rubber material, silicone or similar materials, which are also used for conventional keys.
  • Embodiments of the variable-shape keys that require energy to switch from one stable state to another state are preferably connected to the battery supply voltage of the vehicle.
  • the response time of the shape-changing keys i.
  • the time taken to transition from a flat surface to a final hemispherical shape or other protruding shape may be about one second, with the time period for the reverse direction toward the flat state being similar.
  • Fig. 8 Fig. 12 schematically shows a perspective view of a model of a design of an embodiment of a convertible structure 80 for use in a shape-changeable key according to the present invention.
  • the convertible structure 80 uses a compliant mechanism.
  • the structure 80 has a circular support structure 82.
  • Four elongate leaves 84 are supported on the circular support structure 82.
  • the four elongated blades 84 are formed to have two stable states.
  • the bistability of the compliant mechanism is preferably ensured by a latching mechanism that locks the compliant mechanism in a respective stable condition.
  • the four elongated blades 84 In a first state, the four elongated blades 84 extend inwardly and upwardly from the circular support structure 82 to form a dome-shaped structure.
  • the convertible structure 80 may be overcoated with a cover layer 86, as shown in FIG Fig. 9 is indicated schematically by a dashed line.
  • a cover layer 86 As shown in FIG Fig. 9 is indicated schematically by a dashed line.
  • the four elongated blades 84 extend inwardly toward the center from the circular support structure 82 such that the four elongated blades are substantially level with the circular support structure 82. If the convertible structure is covered with a cover layer, the second state results in a flat, ie substantially planar, surface for the convertible structure.
  • Fig. 9 is a schematic side view of in Fig. 8
  • the four elongated blades 84 are supported on the circular support structure 82 and extend inwardly towards a center where they meet.
  • Fig. 9 shows the convertible structure 80 in its first state.
  • the four elongated blades 84 extend upward and form a dome-shaped structure that serves as a push button.
  • the convertible structure 80 is coated with a cover layer 86, which is indicated only schematically by a dashed line 86. If the convertible structure 80 were incorporated into a vehicle console, the cover layer 86 would form the surface of the console.
  • the four elongated sheets extend at substantially the same level as the circular support structure 82.
  • the cover layer 86 then forms a flat surface, as if no key were present at that location on the console.
  • Moldable keys in accordance with the present invention may be constructed in various ways and may be based, for example, on a three-dimensional shape that is convertible in the mold by means of a compliant mechanism, such as that shown in FIG FIGS. 8 and 9 shown mechanism.
  • a compliant mechanism such as that shown in FIGS. 8 and 9 shown mechanism.
  • Such mechanisms are typically one-piece, pliable or stretchable structures, which structure may deform in three spatial directions and, in response to an input operation, transmit a force or make a movement.
  • a transformation from a flat surface to a uniform hemispherical or dome-shaped surface which looks like a button. Since there are no joints in such a mechanism, the assembly time is reduced or completely eliminated.
  • Another advantage is that there is no wear and tear and that the compliant mechanism is inexpensive and easy to maintain. Its composition includes the use of structural optimization algorithms as well as the proper selection and combination of rigid and ductile materials to achieve the desired effect.
  • the compliance is uniformly distributed throughout the structure, allowing a smooth transition from the flat surface to the dome-shaped surface.
  • a bistability ie the presence of two stable states, can be integrated as a natural, inherent property into the structure of the compliant mechanism. Thus, energy is needed only when switching between the two key states and the compliant mechanism is therefore efficient.
  • Resilient structures also enable a scalable solution that is adaptable to small and large buttons.
  • the shape-changing keys can, as already mentioned above, also be produced from a shape memory polymer.
  • these shape-change polymers can exhibit a drastic transition from a rigid polymer to a very elastic state and back to a rigid state. Unless the polymer is hindered, it will return to elastic State back to its memory form. For example, the polymer will return to a dome-shaped structure as in FIG Fig. 3 is shown.
  • the shape memory polymer (SMP) while handled, can be cooled and therefore returned to a rigid state while retaining the resulting shape indefinitely. The device therefore exhibits inherent bistability and can easily transition from a flat surface to a dome-shaped structure.
  • the temperature for the transition can be controlled depending on the constituents of the shape memory polymer (SMP) and the manufacturing method used for the shape memory polymer.
  • the transition between the stable states can be made within a period of a few seconds.
  • the heating and / or cooling of the shape memory polymer is preferably performed with an internal heating mechanism in the shape memory polymer to reduce the size of the system.
  • a wire mesh made of a shape memory alloy Another way to produce shapable keys results from the use of a wire mesh made of a shape memory alloy.
  • a composite system of a stretchable material and a wire mesh of a shape memory alloy is used.
  • Wires made of a shape memory alloy such as wires made of a NiTi alloy, can transform very quickly into a so-called memory shape when heated to a controllable transformation temperature.
  • a reverse bias mechanism can be used to return the wire mesh from the dome shape representing the memory shape to the flat state. Heat can be supplied by means of an (ohmic) resistance through the conductive alloy wires.
  • Button-like structures of the desired nature can be readily formed by forming a wire mesh of NiTi wires and embedding the wire mesh in a stretchable material, such as a metal mesh. Silicone, to be created.
  • the wire mesh made of the shape memory alloy provides the required bistability for the shape-changing key.
  • shape-changeable keys Another way of producing shape-changeable keys is to use a layered structure formed with a shape memory alloy thin film and a stretchable material. At this time, the thin film formed of the shape memory alloy may be embedded in the stretchable material, or the thin film may be attached to the layer made of the stretchable material.
  • NiTi thin films When NiTi thin films are heated above their transition temperature and are restricted in their motion, they develop tremendous voltages that use them can be transmitted forces and movements.
  • a shape-stable structure having two stable states is created, ie, a dome-shaped surface and a flat surface are created.

Claims (17)

  1. Touche présentant une partie centrale et une bordure qui entoure la partie centrale,
    la touche pouvant être actionnée comme touche-poussoir lorsqu'elle est à l'état actif et la partie centrale de la touche débordant du plan de la surface définie par la bordure,
    la touche ne pouvant être actionnée comme touche-poussoir lorsqu'elle est à l'état inactif et la partie centrale (32; 84) de la touche (30; 80) s'étendant alors essentiellement dans le plan de la surface définie par la bordure (34; 82),
    caractérisée en ce que
    au moins la partie centrale (32) de la touche présente un matériau à mémoire de forme doté d'une bistabilité,
    en ce que lorsque la touche (30) est à l'état actif le matériau à mémoire de forme forme un dôme sur le plan de la surface définie par la bordure (34) et
    en ce que lorsque la touche est à l'état inactif, le matériau à mémoire de forme forme une couche plate qui s'étend essentiellement dans le plan de la surface définie par la bordure (34).
  2. Touche selon la revendication 1, caractérisée en ce que le matériau à mémoire de forme présente un polymère à mémoire de forme et/ou un alliage à mémoire de forme.
  3. Touche selon la revendication 2, caractérisée en ce qu'une couche continue en polymère à mémoire de forme forme la partie centrale (32) de la touche (30) ainsi que la bordure (34).
  4. Touche selon la revendication 1, caractérisée en ce que le matériau à mémoire de forme est un treillis de fils (36) en alliage à mémoire de forme incorporé dans un matériau extensible.
  5. Touche selon la revendication 4, caractérisée en ce que le treillis de fils (36) en alliage à mémoire de forme présente une résistance ohmique et peut être chauffé au moyen d'un courant électrique qui s'écoule dans le treillis de fils, et en ce que le treillis de fils (36) en alliage à mémoire de forme peut être amené dans sa forme mémorisée par chauffage à une température de conversion définie.
  6. Touche selon la revendication 1, caractérisée en ce que le matériau à mémoire de forme est une couche mince réalisée en un alliage à mémoire de forme qui forme une structure stratifiée avec un matériau extensible.
  7. Touche selon la revendication 1, caractérisée en ce que le matériau à mémoire de forme est un polymère à mémoire de forme qui peut être déformé dans sa forme mémorisée par chauffage à une température de conversion définie.
  8. Touche selon la revendication 7, caractérisée en ce qu'un mécanisme interne de chauffage est intégré dans le polymère à mémoire de forme.
  9. Touche selon le préambule de la revendication 1, dont la partie centrale présente un mécanisme déformable doté de deux états stables et dans laquelle, lorsque la touche est à l'état actif, la partie centrale de la touche forme un dôme sur le plan de la surface définie par la bordure (82) et lorsque la touche est à l'état inactif, la partie centrale de la touche est essentiellement plane et est située essentiellement à même hauteur que la bordure (82), caractérisée en ce que
    le mécanisme déformable contient des structures d'un seul tenant, flexibles ou extensibles, la structure pouvant se déformer dans trois directions de l'espace et pouvant transférer une force ou exécuter un déplacement lors d'un actionnement de commande.
  10. Clavier pour véhicule, doté d'une touche selon au moins l'une des revendications précédentes.
  11. Panneau de commande selon la revendication 10, caractérisé en ce que le panneau de commande est prévu sur une console (12) du véhicule, sur une pièce d'habillage de porte, sur un volant et/ou sur un tableau de bord.
  12. Panneau de commande selon la revendication 10, caractérisé en ce que la touche peut être activée et désactivée au moyen d'une unité de commande (26) reliée à la touche.
  13. Panneau de commande selon la revendication 12, caractérisé en ce que le panneau de commande présente d'autres touches reliées à l'unité de commande (26) et en ce que les touches peuvent être activées et désactivées au moyen de l'unité de commande pour commander un sous-système électronique du véhicule.
  14. Panneau de commande selon la revendication 13, caractérisé en ce que les touches sont prévues pour commander un système audio, un système de navigation, un système de commande de climatisation et/ou un système de communication.
  15. Panneau de commande selon la revendication 12, caractérisé en ce que l'unité de commande (26) est configurée de manière à ce que la touche puisse être activée par commande vocale.
  16. Panneau de commande selon la revendication 12, caractérisé en ce que le panneau de commande présente d'autres touches qui présentent chacune un état actif et un état inactif, en ce que le panneau de commande peut être utilisé en plusieurs modes de fonctionnement, une partie des touches pouvant être activée dans un mode de fonctionnement respectif, et en ce que les modes de fonctionnement peuvent être sélectionnés au moyen d'un dispositif de sélection relié à l'unité de commande.
  17. Panneau de commande selon la revendication 10, caractérisé en ce qu'en plus des touches, il présente un affichage sur lequel une fonction de la touche peut être affichée lorsque la touche est à l'état actif.
EP07007409A 2006-04-24 2007-04-11 Touche reconfigurable à forme variable et panneau de commande doté d'une telle touche, en particulier pour l'utilisation dans un véhicule Active EP1850359B1 (fr)

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US11/409,686 US7858891B2 (en) 2006-04-24 2006-04-24 Shape-changing control panel button based on activation/deactivation

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EP1850359A2 EP1850359A2 (fr) 2007-10-31
EP1850359A3 EP1850359A3 (fr) 2009-05-13
EP1850359B1 true EP1850359B1 (fr) 2013-03-06

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DE102022202825A1 (de) 2022-03-23 2023-09-28 Robert Bosch Gesellschaft mit beschränkter Haftung Vorrichtung zur Erzeugung einer veränderlichen Oberfläche und veränderliche Oberfläche in einem Fahrzeug

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Publication number Publication date
EP1850359A2 (fr) 2007-10-31
EP1850359A3 (fr) 2009-05-13
US7858891B2 (en) 2010-12-28
US20070247420A1 (en) 2007-10-25

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