• 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:
    A method for producing a control panel (1), in particular for a vehicle, said method comprising: a) disposing a decorative layer (10) in a first molding cavity (61), b) injecting into the first molding cavity ( 61) of the plastic material facing a rear face (10b) of the decorative layer (10) to form a light guide (20) comprising a plate portion (22) and a transverse portion (24), c) disposing in a second molding cavity (62) a bearing detection element (32) facing the plate portion (22) of the light guide (20), d) injecting plastic material into the second cavity of molding (62) to form a support (40); e) disposing a light source (52) facing a rear end (34b) of the transverse portion (24) of the light guide (20).
    公开号:FR3040337A1
    申请号:FR1558022
    申请日:2015-08-28
    公开日:2017-03-03
    发明作者:Abdelaziz Omar Ben
    申请人:Faurecia Interieur Industrie SAS；
    IPC主号:
    专利说明:

    Control panel for a vehicle and method for making it
    Field of the invention
    The present invention relates to a method for producing a control panel, in particular for a vehicle. The invention also relates to the control panel.
    Context of the invention
    The control panel comprises at least one control zone forming a control button. In particular, this control button makes it possible to start or stop a vehicle equipment, such as the rear window defrosting system, the seat heating, the vehicle stability control system, the hazard warning lights. ..
    The control button includes a support sensing element for changing the state of the equipment and a backlit light signal to inform the user of the status of the equipment and / or signal the location of the control in case of darkness.
    Push buttons are already known, the control button is a module that moves and is visible as such.
    Furthermore, it is known a control panel with a unitary decor facade comprising control areas in which it is possible to control the electrical equipment by deformation of the facade. However, either the control zone is shifted with respect to the light signal, which does not easily detect the position of the control zone in the dark, or the method for making the control panel is complex or difficult to industrialize .
    Presentation of the invention
    To remedy the aforementioned problems, according to the invention, the method comprises the following steps: a) arranging a decorative layer having an aspect face (front) and a rear face opposite to the appearance face in a first cavity of molding, b) injecting into the first molding cavity the plastic material facing the back side of the decorative layer to form a transparent plastic light guide, said light guide comprising a plate portion and a transverse portion, said plate portion having a front face facing the rear face of the decorative layer and a rear face opposite to the front face, the transverse portion extending between a rear end and a front end connecting to the rear face of the plate portion, c) having a front face of a bearing detection element facing the rear face of the guide plate portion. light, said support detection element further comprising a rear face opposite to the front face; d) injecting plastic material (opaque) into the second cavity, on the side of the rear face of the detection element; support for forming a support without covering the rear end of the transverse portion of the light guide, said support having a front face and a rear face opposite to the front face, and e) having a light source facing the rear end of the transverse portion of the light guide.
    Thus, the control panel can be realized in a simple and reliable manner, while allowing to illuminate the control zone and to detect a contact in the control zone.
    The term "transparent material" will be understood to mean a material that allows light to pass as opposed to an opaque material. The term "transparent material" therefore also includes translucent materials.
    According to another characteristic according to the invention, preferably in step a), an opaque decorative layer having at least one through opening is disposed in the first molding cavity, and in step b), the plastic material is inserts into the through opening of the decorative layer, so that the monobloc light guide made by injection in step b) further comprises a through portion extending from a rear end connecting to the front face of the portion of plate to a front end flush with the appearance side of the decor layer.
    Thus, the light guide guiding the light to the level of the aspect of the decorative layer is made in a simple and robust manner. The shape of the light guide at the front end of the through portion defines a pattern adapted to be illuminated by the light source and representative of the equipment controlled by support in the control zone.
    According to a complementary characteristic according to the invention, the decorative layer is preferably produced from an aluminum foil.
    An aluminum foil provides an aesthetically qualitative appearance and allows sufficient elastic deformation to be detected by the detection element without deterioration.
    According to an alternative characteristic according to the invention, the decorative layer is preferably produced from a transparent sheet partially covered with opaque material.
    The portion of the transparent sheet which is not covered with opaque material defines a pattern capable of being illuminated by the light source and representative of the equipment controlled by support in the control zone.
    According to another characteristic according to the invention, preferably during step e) there is a printed circuit board carrying the light source opposite the rear face of the support.
    Thus, the support detection element can be easily connected to the printed circuit board to control the electrical equipment and the light source.
    Preferably, according to the invention, the method further comprises the following features: in step b), the first molding cavity is broken up into a plurality of sub-cavities isolated from each other, in each of which the plastic material is injected to form a plurality of disjoint light guides between which the light does not communicate, and - in step e), a plurality of light sources is disposed facing the rear end of the transverse portion of each light guide.
    Thus, a control panel comprising a plurality of control zones is easily realized, without interference between the lighting of the different control zones.
    Preferably, according to the invention, the method further comprises the following additional features: in step b), a plurality of support detection elements are held on a support film, each detection element of the support being arranged facing the rear face of the plate portion of a respective light guide, and - in step c), the transverse portion of the light guide is passed through passages in the film support.
    Thus, the various support detection elements are easily arranged at the desired location and do not interfere with the light guide.
    According to another characteristic according to the invention, preferably the support detection element comprises a piezoelectric sensor and, during step d), the injected plastic material does not come opposite the center of the piezoelectric sensor.
    Thus, the operation of the piezoelectric sensor is improved without significantly impairing the production of the control panel or its resistance. The invention also relates to a control panel. According to the invention, the control panel has at least one control zone and comprises: a decorative layer having an aspect face and a rear face, a light guide disposed in the control zone and comprising a portion of plate and a transverse portion, said plate portion having a front face located opposite the rear face of the decorative layer and a rear face opposite to the front face, the transverse portion extending between a rear end and a front end is connecting to the rear face of the plate portion, - a support detection element disposed in the control zone having a front face disposed facing the rear face of the plate portion of the light guide and an opposite rear face. at the front face, the plate portion of the light guide being interposed between the decorative layer and the support detection element in the control zone, - a support now holding the support detection element and not covering the rear end of the transverse portion of the light guide, - a light source arranged facing the rear end of the transverse portion of the light guide, the light guide transmitting the light emitted by the light source to the decorative layer.
    The control panel has the advantages mentioned above.
    Preferably, according to the invention, the method further comprises the following additional features: the decorative layer is opaque and has at least one through opening, and the light guide is in one piece and further comprises a through portion; extending from a rear end connecting to the front face of the plate portion to a front end flush with the appearance side of the decor layer.
    The control panel is thus aesthetically satisfactory, while allowing to illuminate the control zone and to detect a support in the control zone.
    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 a control panel according to the invention disposed on a central console of a motor vehicle, - FIG. 2 is a diagrammatic representation in section along line 11-11 in FIG. 1 of the control panel; FIG. 3 illustrates a first step of producing the control panel, FIG. 4 illustrates a second step of producing the control panel, FIG. 5 illustrates a third embodiment of the control panel, FIG. 6 illustrates a fourth embodiment of the control panel.
    Detailed description of the invention
    FIG. 1 illustrates a control panel 1 arranged in a motor vehicle, more precisely on a central console 6.
    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 comprises a back-lit control button 8 presenting a selectively illuminated 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 backlit 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 direction Y, perpendicular to the longitudinal direction and the control direction Z.
    As illustrated in FIG. 2, the control panel 1 essentially comprises a decorative layer 10, a light guide 20, a detection assembly 30, a support 40 and a lighting assembly 50.
    The decorative layer 10 has a rear face 10b opposite the aspect face 10a. The aspect face 10a and the rear face 10b both extend substantially perpendicularly to the control direction Z. The decorative layer 10 is constituted by a plate of substantially constant thickness. In the illustrated embodiment, the decorative layer 10 is made of metal, preferably aluminum, and has a thickness of less than 1 mm, preferably slightly less than 0.5 millimeter. The decorative layer 10 comprises at least one through opening 12 by control zone 2, 3, 4 and whose shape corresponds to the pictograms to be displayed. As a variant, the decorative layer 10 could consist of a plate made of transparent material, preferably made of plastic, devoid of a through opening and covered with a layer of opaque material outside the pictograms to be displayed, this opaque layer advantageously extending deposited by serigraphy.
    In the illustrated embodiment, the control panel 1 comprises a backlit control button light guide 8 corresponding to each of the control areas 2, 3, 4. Each light guide 20 is a one-piece member, preferably in plastic material, in particular polycarbonate, comprising a plate portion 22, a transverse portion 24 and, in the case where the decorative layer 10 comprises a through opening 12, a through portion 26. The light guides 20 are separated one by one others by a space 28 in the longitudinal direction X, to prevent the transmission of light from one light guide 20 to another.
    The plate portion 22 has a front face 22a and a rear face 22b. The front face 22a is in contact with the rear face 10b of the decorative layer 10. The plate portion 22 has a substantially constant thickness in the direction of control Z, so that the rear face 22b is parallel to the front face 22a. The plate portion 22 therefore extends substantially parallel to the decorative layer 10.
    The transverse portion 24 extends in the direction of control Z between a front end 24a and a rear end 24b. The transverse portion 24 forms a plate perpendicular to the plate portion 22, having a thickness substantially constant and identical to the thickness of the plate portion 22, preferably between 1 millimeter and 1.5 millimeters. In the illustrated embodiment, the thickness of the transverse plate is in the longitudinal direction X. The front end 24a of the transverse portion 24 is connected to the rear face 22b of the plate portion 22. Perpendicular to the control direction Z, in the longitudinal direction X in the illustrated embodiment, the front end 24a of the transverse portion 24 is more precisely located in a marginal portion of the rear face 22b of the plate 22.
    The through portion 26 extends between a front end 26a and a rear end 26b in the direction of control Z. The rear end 26b is connected to the front face 22a of the plate portion 22. The front end 26a of the transverse portion 26 is at the same level as the appearance face 10a of the decorative layer 10, in other words the front end 26a of the transverse portion 26 is flush with the appearance face 10a. The bearing detection assembly 30 comprises a support detection element 32 by control zone 2, 3, 4 and a supple support film 34 supporting the detection elements 32. The support detection elements 32 present according to the control direction Z a front face 32a and a rear face 32b, opposite the front face 32a. The front face 32a of the support detection elements 32 is in contact with the rear face 22b of the plate portion 22 of the light guide 20. The support detection assembly 30, and more precisely the support film 34, has passages 46 traversed by the transverse portion 24 of the waveguide 20. In the illustrated embodiment, the detection elements 32 are piezoelectric elements deposited on the support film 34. The bearing detection assembly 30 presents advantageously a thickness of about 0.3 millimeters.
    The support 40 comprises a front face 40a and a rear face 40b, opposite to the front face 40a in the direction of control Z. The front face 40a is at the rear face 32b of the support detecting element 32 and more specifically in contact with the support film 34 of the support detection assembly 30 in the illustrated embodiment. The support 40 has a substantially constant thickness following the control direction Z, preferably between 1 and 2 millimeters. The support 40 however comprises first cavities 42 through, ie first lights, so as to clear the rear end 24b of the transverse portion 24 of the waveguide. The support further comprises second cavities 44, facing the rear face 22b of the bearing detection elements 32 and extending at least opposite the center of the bearing detection elements 32. It should be noted that the second cavities 44 may not be through, the essential is that the support is at a distance from the support detection element 32 in the control direction Z, to allow it to deform. The support 40 gives the control panel its rigidity and holds the detection assembly 30. The support 40 is made of opaque thermoplastic material, preferably consisting of a mixture of polycarbonate and acrylonitrile butadiene styrene. The lighting assembly 50 comprises a printed circuit board 54 carrying a light source 52 by control zone 2, 3, 4. The light source 52 is advantageously constituted by a light-emitting diode. Preferably, the light source comprises two electroluminescent diodes of different colors corresponding to the state of the electrical equipment. The printed circuit board 54 is in contact with the rear face 40b of the support 40. Each light source 52 is inserted into the corresponding first cavity 42 so as to face the rear end of 24b of the transverse portion 24. of the light guide 20.
    When a user presses on the control panel 1 in the control direction Z, in one of the control areas 2, 3, 4, the decorative layer 10, the light guide 20 and the corresponding detection element 32 deform. The sensing element 32 emits an electrical signal which is transported by a conductor on the carrier film 34 to an electronic unit and the illumination of the light source 52 is changed.
    The light emitted by the light source 42 enters the light guide 20 through the rear end 24b of the transverse portion 24, propagates in the light guide 20 and leaves through the front end 26a of the through portion 26 to be visible to the user. In the absence of a through portion 26, the light emerges from the light guide 20 through the front face 22a of the plate portion 22, then passes through the transparent decorative layer.
    Figures 3 to 6 illustrate a method of producing the control panel 1 according to the invention.
    As illustrated in FIG. 1, the decorative layer 10 is made with its through apertures 12 (by punching or laser cutting), then the appearance face 10a of the decorative layer 10 is placed against the surface 64a of a matrix 64 of a first mold.
    Then, the first mold is closed by approaching a first punch 65 of the die 64. The first punch 65 has a surface 65b from which protrude the first ribs 66 coming into contact with the rear face 10b of the decorative layer 10, when the first mold is closed. The first mold cavity 61 between the die 64 and the first punch 65 of the first mold then comprises three distinct sub-cavities 612, 613, 614 corresponding to the control zones 2, 3, 4.
    As illustrated in FIG. 4, thermoplastic material, preferably polycarbonate, is then injected into the first molding cavity 61, in particular into each of the distinct sub-cavities 612, 613, 614, between the surface 65b of the first punch 65 and the rear face 10b of the decorative layer 10. The thermoplastic filled the through openings 12 and the light guides 20 are made separated by the spaces 28 corresponding to the first ribs 66 of the first punch 65. The first mold is then open by discarding the first punch 65 of the die 64.
    The front face 32a of the detection elements 32 is then placed against the rear face 22b of the plate portion 22 of the corresponding detection zone 2, 3, 4 and the rear end 24b of the transverse portion 24 is passed through the corresponding passage 36 in the support film 34.
    A second punch 67 is then approached from the die 64. The second punch 67 has a surface 67b from which protrude from the second ribs 68 and studs 69. When the second mold, formed by the die 64 and the second punch 67, is closed, the second ribs 68 come into contact with the rear end 24b of the transverse portion 24 of each of the light guides 20 and the pads 69 come into contact with the detection assembly 30, more precisely of the support film 34, in view of the rear face 32a of each detection element 32.
    As illustrated in FIG. 6, opaque thermoplastic material, preferably a mixture of polycarbonate and acrylonitrile butadiene styrene, is then injected into the second molding cavity 62 between the matrix 64 and the second punch 67. thermoplastic fills the space between the surface 67b of the second punch 67 and the detection assembly 30 to form the support 40. The second mold is then opened by removing the second punch 67 from the die 64.
    The support 40 has the first cavities 42 corresponding to the second ribs 68 of the second punch 67 and the second cavities 44 corresponding to the pads 69 of the second punch 67.
    The lighting assembly 50 is then fixed to the support 40. The printed circuit board 54 bears against the rear face 40b of the support and the light sources 52 are inserted into the corresponding first cavities 42.
    权利要求:
    Claims (10)
    [1" id="c-fr-0001]
    A method for producing a control panel (1), in particular for a vehicle, said method comprising the steps of: a) providing a decorative layer (10) having an aspect face (10a) and a rear face (10b) opposed to the appearance face (10a) in a first molding cavity (61), b) injection into the first molding cavity (61) of plastic material facing the rear face (10b) of the layer decor (10) for forming a transparent plastic light guide (20), said light guide comprising a plate portion (22) and a transverse portion (24), said plate portion (22) having a front face ( 22a) located opposite the rear face (10b) of the decorative layer (10) and a rear face (22b) opposite to the front face (22a), the transverse portion (24) extending between a rear end (24b) ) and a front end (24a) connecting to the rear face (22b) of the plate portion (22). ), c) placing in a second mold cavity (62) a front face (32a) of a bearing detecting element (32) facing the rear face (22b) of the plate portion (22). ) of the light guide (20), said support detecting element (20) further comprising a rear face (32b) opposite to the front face (32a), d) injecting plastic material into the second molding cavity ( 62), on the rear face (32b) side of the bearing detection element (32) to form a support (40) without covering the rear end (24b) of the transverse portion (24) of the guide bar light (20), said support (40) having a front face (40a) and a rear face (40b) opposite to the front face (40a), e) arrangement of a light source (52) facing the rear end (24b) of the transverse portion (24) of the light guide (20).
    [2" id="c-fr-0002]
    The method according to claim 1, wherein: in step a), an opaque decor layer (10) having at least one through aperture (12) is disposed in the first molding cavity (61), and - in step b), the plastic material is inserted into the through opening (12) of the decorative layer (10), so that the one-piece light guide made by injection in step b) further comprises a through portion (26) extending from a rear end (26b) connecting to the front face (22a) of the plate portion (22) to a front end (26a) flush with the appearance face ( 10a) of the decorative layer (10).
    [3" id="c-fr-0003]
    3. Method according to claim 2, wherein the decorative layer (10) is made from an aluminum foil.
    [4" id="c-fr-0004]
    4. The method of claim 1, wherein the decorative layer (10) is made from a transparent sheet partially covered with opaque material.
    [5" id="c-fr-0005]
    5. Method according to any one of the preceding claims wherein during step e) there is a printed circuit board (54) carrying the light source (52) facing the rear face (40b) of the support ( 40).
    [6" id="c-fr-0006]
    6. Method according to any one of the preceding claims wherein: in step b), the first molding cavity (61) is broken up into a plurality of sub-cavities isolated from each other, in each of which the material plastic is injected to form a plurality of disjointed light guides (20) between which the light does not communicate, and - in step e), a plurality of light sources (52) is disposed opposite the rear end (24b) of the transverse portion (24) of each light guide (20).
    [7" id="c-fr-0007]
    7. Method according to the preceding claim wherein: in step b), a plurality of support detection elements (32) are held on a support film (34), each support detection element ( 32) being arranged facing the rear face (22b) of the plate portion (22) of a respective light guide (20), and - in step c) the transverse portion (24) is passed through light guide through passages (36) formed in the support film (34).
    [8" id="c-fr-0008]
    8. Method according to any one of the preceding claims wherein: - the support detection element (32) comprises a piezoelectric sensor, and - during step d) the injected plastic material (40) does not come facing the center of the piezoelectric sensor (32).
    [9" id="c-fr-0009]
    9. Control panel (1), in particular for a vehicle, said control panel (1) having at least one control zone (2, 3, 4) and comprising: - a decorative layer (10) having a surface of an appearance (10a) and a rear face (10b), - a light guide (20) disposed in the control zone (2, 3, 4) and comprising a plate portion (22) and a transverse portion (24), said plate portion (22) having a front face (22a) facing the rear face (10b) of the decor layer (10) and a rear face (22b) opposite the front face (22a), the transverse portion (24) extending between a rear end (24b) and a front end (24a) connecting to the rear face (22b) of the plate portion (22), - a bearing detecting element (32) disposed in the control zone (2, 3, 4) and having a front face (32a) arranged facing the rear face (22b) of the plate portion (22) of the light guide (20) and a rear face (32b) opposite to the front face (32a), the plate portion (24) of the light guide (20) being interposed between the decorative layer (10) and the support detection element (32) in the control zone (2, 3, 4), - a support (40) holding the bearing detection element (32) and not covering the rear end (24b) of the transverse portion (24) of the guide light source (20), - a light source (32) arranged facing the rear end (24b) of the transverse portion (24) of the light guide (20), the light guide (20) transmitting the light emitted by the light source (32) to the decorative layer (10).
    [10" id="c-fr-0010]
    10. Control panel according to the preceding claim wherein: - the decorative layer (10) is opaque and has at least one through opening (12), and - the light guide (20) is in one piece and further comprises a through portion (26) extending from a rear end (26b) connecting to the front face (22a) of the plate portion (22) to a front end (26a) flush with the appearance face (10a) the decorative layer (10).
    类似技术:
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    同族专利:
    公开号 | 公开日
    DE102016215763A1|2017-03-09|
    FR3040337B1|2019-04-12|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE102008014443A1|2007-03-29|2008-11-13|Demmel Ag|Illuminated keyboard key has a chamber under the front layer, between the pressure sensor and the key surface, filled with a mass at least partially enclosing the housing and the push rod|
    EP2141810A1|2008-07-03|2010-01-06|Somfy SAS|Operating device for a home automation apparatus|
    DE102012223779A1|2012-12-19|2014-06-26|BSH Bosch und Siemens Hausgeräte GmbH|Household appliance with capacitive control panel and method for its production|FR3079091A1|2018-03-16|2019-09-20|Faurecia Interieur Industrie|PIEZOELECTRIC BUTTON FOR VEHICLE CABINET|
    US20190113674A1|2017-10-17|2019-04-18|Dura Operating, Llc|Led light guide assembly for injection molding plastic encapsulation|
    DE102018207071A1|2018-05-07|2019-11-07|Volkswagen Aktiengesellschaft|Operating and / or display element for a motor vehicle|
    DE102018215735A1|2018-09-17|2020-03-19|Bayerische Motoren Werke Aktiengesellschaft|Motor vehicle|
    ES2799830A1|2019-06-17|2020-12-21|Srg Global Liria S L|ELECTRONICS IN MOLD AND ITS MANUFACTURING METHODS |
    FR3109918A1|2020-05-05|2021-11-12|Faurecia Interieur Industrie|Packing element comprising two independent backlit areas|
    法律状态:
    2016-07-20| PLFP| Fee payment|Year of fee payment: 2 |
    2017-03-03| PLSC| Search report ready|Effective date: 20170303 |
    2017-07-20| PLFP| Fee payment|Year of fee payment: 3 |
    2018-07-20| PLFP| Fee payment|Year of fee payment: 4 |
    2019-07-22| PLFP| Fee payment|Year of fee payment: 5 |
    2020-07-21| PLFP| Fee payment|Year of fee payment: 6 |
    2021-07-22| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1558022|2015-08-28|
    FR1558022A|FR3040337B1|2015-08-28|2015-08-28|CONTROL PANEL FOR A VEHICLE AND METHOD FOR REALIZING THE SAME|FR1558022A| FR3040337B1|2015-08-28|2015-08-28|CONTROL PANEL FOR A VEHICLE AND METHOD FOR REALIZING THE SAME|
    DE102016215763.9A| DE102016215763A1|2015-08-28|2016-08-23|Control panel for a vehicle and method of making it|
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