• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Control panel (1), in particular for a vehicle, said control panel comprising: - a flexible covering element (10), - a rigid support (40), - a piezoelectric sensor (24) arranged between the element cladding (10) and support (40), and - a flexible member (30) disposed between the piezoelectric sensor (24) and the rigid support.
    公开号:FR3043952A1
    申请号:FR1561174
    申请日:2015-11-20
    公开日:2017-05-26
    发明作者:Abdelaziz Omar Ben
    申请人:Faurecia Interieur Industrie SAS；
    IPC主号:
    专利说明:

    Control panel with flexible piezoelectric sensor for a vehicle
    Field of the invention
    The present invention relates to a control panel, vehicle.
    Context of the invention
    The control panel includes at least one control button, in particular for starting or stopping vehicle equipment, such as the rear window defrosting system, the seat heating, the stability control system. of the vehicle, the hazard lights, ... The control button includes a support detection element constituted by a piezoelectric sensor to change the state of the equipment.
    The document FR2908681 A1 discloses a control panel of this type comprising: - a cladding element, - a rigid support, and - a piezoelectric sensor disposed between the cladding element and the support. The invention aims to provide a robust control panel that can be industrialized easily and reliably, while allowing to detect a support ergonomically and reliably.
    Presentation of the invention
    To do this, according to the invention, the control panel further comprises a flexible element disposed between the piezoelectric sensor and the rigid support.
    By pressing the dressing element at the control button the user causes a localized deformation of the dressing element that is transmitted to the piezoelectric sensor, while the flexible element does not need to distort the rigid support to allow the deformation of the piezoelectric sensor. In other words, the flexible element makes it possible to reduce the stress exerted by the user to cause a determined deformation of the piezoelectric sensor. The control panel is thus more ergonomically satisfactory and its robustness is improved.
    According to another characteristic according to the invention, the flexible element is preferably elastically compressible.
    Thus, the flexible element biases the piezoelectric sensor to a determined position.
    According to another characteristic according to the invention, preferably the support comprises a cavity having an opening and the flexible element extends in said cavity.
    Thus, the deformation zone is localized, which allows the user to better feel the place where he must press.
    According to a complementary characteristic according to the invention, preferably the flexible element is circumscribed to the cavity.
    Thus, the deformation of the cladding element will be more circumscribed and localized to the zone of the piezoelectric sensor.
    According to a complementary characteristic according to the invention, preferably the flexible element is able to crash in a direction of control without expanding in directions perpendicular to the control direction.
    Thus, the realization and operation of the control panel are improved.
    According to another characteristic according to the invention, the piezoelectric sensor is preferably in the form of a layer printed on a support film.
    Thus, the positioning of the piezoelectric sensor with respect to the flexible covering element and the rigid support is easier, which simplifies the realization of the control panel, especially when it comprises multiple control buttons. Printing is called a deposit of material, in particular by screen printing, jet drops of material or a similar technique.
    According to a complementary characteristic according to the invention, preferably the flexible element is in the form of a layer printed on the support film, the piezoelectric sensor and the flexible element being arranged on either side of the support film.
    Thus, the positioning of the flexible element relative to the piezoelectric sensor is improved and the realization of the control panel is simplified.
    According to an equally complementary characteristic according to the invention, the flexible element preferably has a thickness of between 25 μηπ and 500 μηπ.
    According to another characteristic according to the invention, preferably the control panel comprises a plurality of piezoelectric sensors and a plurality of flexible elements, the flexible elements being separated from each other by the support.
    Thus, the risk that pressure on the flexible cladding element causes deformation detected by two of adjacent piezoelectric sensors is reduced.
    In various embodiments of the control panel according to the invention, one or more of the following provisions may also be used: the element is made of silicone, rubber or elastomer thermoplastic; or the like - the support is made of plastic.
    BRIEF DESCRIPTION OF THE FIGURES Other features and advantages of the present invention will become apparent from the following detailed description, with reference to the accompanying drawings, in which: FIG. 1 shows in perspective a vehicle cabin comprising a central console equipped with a control panel according to the invention - FIG. 2 shows the control panel on an enlarged scale, FIG. 3 is a schematic representation in section along the line marked III-III in Figure 2 of the control panel.
    Detailed description of the invention
    FIG. 1 illustrates a cabin of a motor vehicle 100 with a dashboard 7 provided with a central console 6. The central console 6 comprises a control panel 1.
    The control panel 1 has an aspect face 10a forming a visible facade. The control panel 1 comprises a plurality of control zones 2, 3, 4, three control zones in the illustrated embodiment, succeeding one another in a longitudinal direction X. Each of the control zones 2, 3, 4 comprises a button 8 having a pictogram and being able to detect a pressure exerted in a direction of control Z on the aspect face 10a of the control zone 2, 3, 4 of the corresponding control button 8. The control direction Z is perpendicular to the longitudinal direction X. The aspect face extends 10a extends in the longitudinal direction X and in a transverse direction Y, perpendicular to the longitudinal direction and the control direction Z.
    As illustrated in FIG. 3, the control panel 1 essentially comprises a covering element 10, a control assembly 20, flexible elements 30 and a support 40. The covering element 10 forms a decorative layer and has the appearance face 10a and a rear face 10b, opposite the appearance face 10a, both of which extend substantially perpendicularly to the control direction Z. Alternatively, the aspect face 10a may not to be flat. In the illustrated embodiment, the covering element 10 comprises a plate, preferably metal, in particular aluminum, of substantially constant thickness, less than 1 mm, preferably slightly less than 0.5 millimeter. As a variant, the covering element 10 comprises a carbon fiber layer, a wood layer, a mineral layer, for example a stone layer, for example a shale stone layer such as slate or mica, or a layer of layer of glass. In yet another variant, the covering element 10 comprises a leather layer or a synthetic resin film. The control assembly 20 essentially comprises a piezoelectric sensor 22 by control zone 2, 3, 4 and a support film 24 supporting the piezoelectric sensors 22.
    Each piezoelectric sensor 22 has a front face 22a facing the rear face 10b of the covering element 10 and a rear face 22b facing the support film 24. Each piezoelectric sensor 22 is fixed on the support film 24, preferably by printing and having a thickness of about 0.1 millimeter. The piezoelectric elements 22 are connected to an electrical connector by conductive tracks (not shown) also supported by the support film 24 and preferably made by printing.
    The support film 24 comprises a front face 24a facing the piezoelectric elements and a rear face 24b, opposite to the front face 24a. The support film 24 is electrically insulating, consisting of a thin layer of transparent plastic material of the order of 0.1 millimeter to a few tenths of a millimeter thick and is flexible. The thickness of the cladding element 10 is adapted according to the type of material so that a pressure of a user on the cladding element 10 in a control zone 2, 3, 4 is transmitted to the sensor Piezoelectric 22. The deformation of the cladding element 10 during the application of the pressure is of the order of 15 pm to 500 pm. This deformation is reversible, so that the trim element 10 returns to its original shape after the support of the user. Thus, the appearance surface 10a of the covering member 10 may advantageously have a smooth appearance, that is to say not having a recessed area or raised, which increases the aesthetics of the panel. ordered.
    The support 40 comprises a front face 40a and a rear face 40b, opposite to the front face 40a in the control direction Z. The front face 40a is opposite the rear face 22b of the piezoelectric elements 22. The support 40 has a thickness substantially next to the control direction Z, preferably between 1 and 2 millimeters.
    In the embodiment illustrated in FIG. 3, the support 40 comprises cavities 42 facing each of the pressure sensors 22. The cavities 42 present are not open, so that they each have a single opening 44. The cavities 42 are preferably substantially planar and of substantially constant thickness.
    The support 40 is made of thermoplastic material. The support 40 is made by molding, by injection or by thermocompression. The support 40 is preferably made of a mixture of polycarbonate and acrylonitrile butadiene styrene. The support 40 is rigid. Here is meant by rigid element any element that can not be deformed by a simple pressure exerted by a finger. The rigidity of the support 40 is given either by the nature of the material constituting the support, or by its construction characteristics such as its thickness, its shape, its possible reinforcing elements (ribs).
    The flexible elements 30 are arranged opposite the piezodectric sensors 22, more precisely the flexible elements 30 are arranged in the cavities 42 and have a front face 30a facing the rear face 22a of a piezoelectric sensor 22 and a rear face facing each other. of the front face 40a of the support 40. In the illustrated embodiment, the support film 24 is disposed between the piezoelectric sensors 22 and the flexible elements 30. As a variant, the support film 24 could be arranged between the covering element 10 and the piezoelectric sensors 22
    The flexible elements 30 have a substantially constant thickness e and are substantially plane in the illustrated embodiment. The front face 30a of the flexible elements is substantially flush with the opening 44 of the cavity, so that the flexible elements 30 are circumscribed to the cavities 42 and that outside the zones of the support film 24 where the flexible elements 30 are present, the film support 24 is substantially in contact with the support 40. Thus, in the longitudinal direction X along which are arranged the control buttons 8, the flexible elements are separated from each other by the support 40. The risk that the piezoelectric sensor 22 of a control zone 2, 3, 4 detects a deformation in an adjacent zone is therefore reduced. The thickness e of the flexible elements is preferably between 25 μm and 500 μm.
    The flexible elements 30 are preferably elastically deformable, so as to urge the pressure sensors 22 to a defined position which consists, in the illustrated embodiment, in maintaining the front face 22a of the pressure sensors 22 resting against the rear face 10b of the covering element 10.
    The flexible elements 30 are advantageously made of silicone, rubber, thermoplastic elastomer or the like. They are preferably able to deform by at least a quarter of their thickness when they undergo a force of 10 N over their entire front face 30a.
    In addition, the flexible elements 30 are preferably capable of crashing in the direction of control Z, without expanding perpendicular to the direction of control Z. For this purpose, the flexible elements 30 are preferably of the lacunary type, such as than a foam or sponge.
    As illustrated in FIG. 3, when a user 50 presses with his finger on the aspect face 10a in one of the control zones 2, 3, 4, the dressing element 10 undergoes the pressure exerted by the user and deforms slightly. The pressure is transmitted by deformation through the piezoelectric sensor 22 which detects this deformation and transmits an electrical signal to an electronic control unit of the vehicle equipment (not shown) via the conductive tracks, the support film 24 and the flexible element 30. which "absorbs" this deformation by crashing in the direction of deformation Z, the support 40 not substantially deforming.
    The piezoelectric sensors 22 advantageously have a diameter of the order of 15 millimeters perpendicular to the control direction Z. In the illustrated embodiment, the flexible elements 30 have substantially the same size as the piezoelectric sensors 22 perpendicular to the control direction. Z. Preferably, perpendicularly to the control direction Z, the flexible elements 30 present have a size at least equal to that of the piezoelectric sensors 22.
    In an alternative embodiment, the flexible elements 30 could be of larger size than the piezoelectric sensors 22, between 25% and 100% along at least one of the longitudinal X and transverse Y directions, to allow the flexible elements to flow next these directions, when the flexible elements 30 are in a material that does not allow a simple crushing. The covering element 10 is fixed by its rear face 10b to the front face of the control assembly 20, preferably by gluing. The support 40 is preferably molded in order to adhere to the control assembly 20 and to the rear face 10b of the covering element 10. As a variant, the support 40 can be fixed by assembly to the element of dressing 10.
    权利要求:
    Claims (10)
    [1" id="c-fr-0001]
    1. Control panel (1), vehicle, said control panel comprising: - a covering element (10), - a support (40) rigid, and - a piezoelectric sensor (24) disposed between the element d cladding (10) and the support (40), said control panel being characterized in that it further comprises a flexible member (30) disposed between the piezoelectric sensor (24) and the rigid support.
    [2" id="c-fr-0002]
    2. Control panel according to claim 1 wherein the flexible element (30) is elastically compressible.
    [3" id="c-fr-0003]
    3. Control panel according to any one of the preceding claims wherein the support (40) comprises a cavity (42) having an opening (44) and the flexible member (30) extends into said cavity (42).
    [4" id="c-fr-0004]
    4. Control panel according to the preceding claim wherein the flexible element (30) is circumscribed to the cavity (42).
    [5" id="c-fr-0005]
    5. Control panel according to any one of the preceding claims wherein the flexible element (30) is capable of crashing in a control direction (Z) without expanding in directions (X, Y) perpendicular to the control direction (Z).
    [6" id="c-fr-0006]
    6. Control panel according to any one of the preceding claims wherein the piezoelectric sensor (24) is in the form of a printed layer on a support film (22).
    [7" id="c-fr-0007]
    7. Control panel according to the preceding claim wherein the flexible element (30) is in the form of a layer printed on the support film (22), the piezoelectric sensor (24) and the flexible element (30) being arranged on either side of the support film (22).
    [8" id="c-fr-0008]
    8. Control panel according to any one of claims 4 and 5 wherein the flexible element has a thickness (e) between 25 μηη and 500 μηη.
    [9" id="c-fr-0009]
    A control panel according to any one of the preceding claims comprising a plurality of piezoelectric sensors (24) and a plurality of flexible elements (30), the flexible elements (30) being separated from each other by the support (40). ).
    [10" id="c-fr-0010]
    10. Control panel according to any one of the preceding claims wherein the flexible member (30) is silicone, rubber, elastomeric thermoplastic or the like.
    类似技术:
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    EP3051698B1|2018-06-13|Control panel for a vehicle and method for manufacturing such a control panel
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    FR2881091A1|2006-07-28|Trim part e.g. door fitting, for motor vehicle, has control layer with two thin sub-layers that are disposed on switch zone of covering layer towards position in which they form electrical junction
    同族专利:
    公开号 | 公开日
    FR3043952B1|2018-07-20|
    CN206485284U|2017-09-12|
    US20170146414A1|2017-05-25|
    US10024744B2|2018-07-17|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    WO2007123404A1|2006-04-25|2007-11-01|D-Switch B.V.|Switch unit comprising a touch panel being part of a front plate extending over a full face of a device and corresponding device|
    WO2009025529A2|2007-08-22|2009-02-26|Eui Jin Oh|Piezo-electric sensing unit and data input device using piezo-electric sensing|
    WO2012104289A2|2011-02-02|2012-08-09|Lisa Dräxlmaier GmbH|Surface-integrated switching element arrangement|
    WO2015125119A1|2014-02-20|2015-08-27|Aito Interactive Oy|A piezoelectric sensor for detecting an actuation direction, and an electrical appliance comprising the same|
    US7681290B2|2006-10-20|2010-03-23|The Boeing Company|Piezoelectric bimorph beam manufacturing method|
    DE102006054264A1|2006-11-17|2008-05-21|Volkswagen Ag|Component e.g. door handle, manufacturing method for use in vehicle i.e. motor vehicle, involves injecting colored decoration material into gap between die plate and control-sided surface of sleeve and element for forming decoration layer|
    DE102009004985A1|2009-01-14|2010-07-22|Sellner Gmbh|Covering part with sensor|
    US8203541B2|2009-03-11|2012-06-19|Empire Technology Development Llc|OLED display and sensor|
    DE102011050585B4|2011-05-24|2014-05-08|Kunststoff Helmbrechts Ag|Process for the production of a plastic molding as a display and / or functional element and plastic molding|
    DE102011055289A1|2011-11-11|2013-05-16|Huf Hülsbeck & Fürst Gmbh & Co. Kg|handle|
    FR2989485B1|2012-04-11|2016-02-05|Commissariat Energie Atomique|TOUCH SENSOR AND METHOD FOR MANUFACTURING SUCH SENSOR|US10712892B2|2017-04-26|2020-07-14|Sensel, Inc.|Pre-loading a resistive touch sensor device via lamination of differently curved surfaces|
    CN111527003A|2017-12-15|2020-08-11|利萨·德雷克塞迈尔有限责任公司|Linear lighting device with integrated operating element|
    CN109204182B|2018-08-02|2020-08-28|吉利汽车研究院（宁波）有限公司|Manufacturing method of automobile decoration and automobile decoration|
    法律状态:
    2016-10-20| PLFP| Fee payment|Year of fee payment: 2 |
    2017-05-26| PLSC| Publication of the preliminary search report|Effective date: 20170526 |
    2017-10-20| PLFP| Fee payment|Year of fee payment: 3 |
    2018-10-24| PLFP| Fee payment|Year of fee payment: 4 |
    2019-10-22| PLFP| Fee payment|Year of fee payment: 5 |
    2020-10-21| PLFP| Fee payment|Year of fee payment: 6 |
    2021-10-20| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1561174A|FR3043952B1|2015-11-20|2015-11-20|CONTROL PANEL WITH SOFT PIEZOELECTRIC SENSOR FOR A VEHICLE|
    FR1561174|2015-11-20|FR1561174A| FR3043952B1|2015-11-20|2015-11-20|CONTROL PANEL WITH SOFT PIEZOELECTRIC SENSOR FOR A VEHICLE|
    CN201621236836.2U| CN206485284U|2015-11-20|2016-11-18|Control panel for vehicle|
    US15/356,370| US10024744B2|2015-11-20|2016-11-18|Control panel with flexible piezoelectric sensor for a vehicle|
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