• 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:
    Method for manufacturing a control panel (12) intended to be arranged inside a passenger compartment (1) of a vehicle and control panel (12) intended to be arranged inside a cockpit (1) of vehicle and comprising a cladding element (30) having at least one control zone (16, 18, 20, 22, 24, 26, 28), a support member (38) and a piezoelectric film (36). The piezoelectric film (36) extends between the cladding element (30) and the support member (38). The support member (38) has at least one recess (48, 50, 52, 54) in line with the control zone (16, 18, 20, 22, 24, 26, 28).
    公开号:FR3031940A1
    申请号:FR1550631
    申请日:2015-01-27
    公开日:2016-07-29
    发明作者:Abdelaziz Omar Ben
    申请人:Faurecia Interieur Industrie SAS；
    IPC主号:
    专利说明:

    [0001] 1 CONTROL PANEL FOR VEHICLE AND METHOD FOR MANUFACTURING SUCH CONTROL PANEL The present invention relates to a control panel intended to be arranged inside a vehicle passenger compartment, for example a motor vehicle, as well as to a method for manufacturing such a control panel. More particularly, the invention relates to a control panel intended to be arranged inside a vehicle cabin and comprising: a trim element having an outer face intended to be oriented in the direction of the vehicle; interior and an inner face opposite to said outer face, the outer face having at least one control zone, a support member having an outer face facing the inner face of the trim member and an inner face opposite to said outer face, and - a piezoelectric film. It is known from the state of the art of the control boards of the type in question. However, existing control panels of this type require a significant manufacturing effort with the addition of inserts, in particular on the outer face of the trim element, and reinforcing elements, to allow optimal use. of the piezoelectric film. Thus, in order to reduce manufacturing times while avoiding an increase in the mass and cost of the assembly and ensuring optimal use of the piezoelectric film, the present invention aims to improve the existing devices. For this purpose, according to the invention, a control panel of the kind in question is characterized in that the piezoelectric film extends between the covering element and the support element, in that the support element 35 comprises at least one recess at the right of the control zone. By virtue of these arrangements, a control panel comprising a piezoelectric element is produced in a simple manner without calling into question or degrading the use characteristics of the piezoelectric element by virtue of the presence of the recess situated below the zone of the piezoelectric element. ordered. Thus, the piezoelectric element can deform in order to function optimally at the control zone. Indeed, as soon as a user 10 will press on the control zone, the recess below the piezoelectric element will allow the deformation of the piezoelectric element and the creation of an electric current that can be transmitted to connectors located under the control panel.
    [0002] In preferred embodiments of the invention, one and / or other of the following arrangements may also be used: the piezoelectric film is integrated between the covering element and the support member by overmolding the support member. A control panel is formed comprising a piezoelectric element in a simple manner thanks to the overmoulding; the dressing element comprises a plurality of control zones, the support element comprises a plurality of recesses and each control zone corresponds to a recess of the support element and a piezoelectric film portion. Several control zones are easily created without the need for additional patches; The covering element comprises an aluminum material. The piezoelectric film does not interfere with the aluminum material, unlike control panels using capacitive technologies; the piezoelectric film has an outer face oriented towards the cladding member and an inner face facing the support member; the piezoelectric film comprises a thermo-reactive adhesive material, the thermo-reactive adhesive material being disposed on the inner face and / or the outer face of the piezoelectric film. The thermoreactive material is thus activated only during overmoulding of the support element; the piezoelectric film comprises at least one printed conductive track arranged facing the at least one recess; the printing of the conductive track is simple to implement; the recess extends over a certain recess length, in which the printed conductive track extends over a certain track length, and the track length is less than the recess length; thus forming a button area slightly smaller than the recess so as to ensure good deformation of the piezoelectric element over its entire area for generating an electrical signal; The control zone extends over a certain control length, in which the recess extends over a certain recess length, and wherein the control length is less than the recess length; The control zone extends over a certain control length, in which the printed conductive track extends over a certain track length, and the track length is equal to the control length; The present invention also relates to a vehicle dashboard equipped with a control panel as described. The present invention also relates to a method for manufacturing a control panel intended to be arranged inside a vehicle passenger compartment comprising the following steps: providing an injection molding machine with a mold, - providing a trim element having an outer face intended to be oriented towards the passenger compartment and an inner face opposite to said outer face, the outer face having at least one control zone, - positioning of the casing element in the mold, - providing a piezoelectric film having an inner face and an outer face, - positioning and holding in position the piezoelectric film in the mold, the outer face of the piezoelectric film being arranged on the inner face of the covering element, 15 - forming a support element by overmoulding in the mold of material on a portion of the inner face of the piezoelectric film, the shaped support member having an outer face facing the inner face of the cladding element and an inner face opposite to said outer face and a recess in the right of the control zone; and integrating the piezoelectric film between the covering element and the support element during the overmolding step of the support element.
    [0003] In an alternative embodiment of the method, the outer face of the piezoelectric film adheres to the cladding element, and wherein the inner face of the piezoelectric film adheres to the support member when injecting material into the mold. .
    [0004] According to an alternative embodiment, the piezoelectric film is held in position in the mold by suction and / or mechanical retention. Other features and advantages of the invention will become apparent from the following description of one of its embodiments, given by way of non-limiting example, with reference to the accompanying drawings. In the drawings: FIG. 1 is a schematic view of a vehicle interior including a dashboard equipped with a control panel according to the invention; FIG. 2 is a plan view of an example of an outer face of a cladding element; FIG. 3 is a diagrammatic sectional view along the line III-III of FIG. 1 of the control board; FIG. 4 is a diagrammatic sectional view of a piezoelectric film according to a first embodiment; FIG. 5 is a schematic view of a piezoelectric film according to a second embodiment.
    [0005] In the different figures, the same references designate identical or similar elements. In the present case, in the following description, the term "piezoelectric film" is to be interpreted broadly to mean a film that includes one or more piezoelectric elements. FIG. 1 illustrates a cabin of a vehicle 1 with a dashboard 10. The dashboard 10 comprises a control panel 12. The control panel 12 has an outer face 14 oriented toward the passenger compartment. The control panel 12 comprises a control zone 16, 18, 20, 22, 24, 26, 28. The control zone 16, 18, 20, 22, 24, 26, 28 is visible on the outside face 14 of the array The control zone 16, 18, 20, 22, 24, 26, 28 may, for example, be touched by a user of the vehicle to control the activation and / or deactivate from the cockpit. vehicle features such as hazard warning lights, central locking of the vehicle, anti-skid system, parking brake, or to adjust the intensity of a ventilation system or the like. As shown in FIG. 1, the control panel 12 comprises several control zones 16, 18, 20, 22, 24, 26, 28. However, it is possible for the control panel 12 to comprise only one zone. control. In the embodiment illustrated in FIG. 1, the different control zones 16, 18, 20, 22, 24, 26, 28 present on the outer face of the control panel 12 are indicated by visible markings for an occupant of the vehicle and / or by markings that can be felt to the touch by an occupant of the vehicle, such as raised elements. Alternatively, it can be provided that only the envelopes within which the various control areas extend are indicated by such markings. As can be seen in FIG. 3, the control panel 12 comprises a covering element 30. The covering element has an outer face 32 intended to be oriented in the direction of the passenger compartment and an inner face 34 opposite to said outer face 32. The outer face 32 of the trim element is visible and accessible from the passenger compartment 1 by an occupant of the vehicle. The outer face 32 has at least one control zone 16, 18, 20, 22, 24, 26, 28. The control panel 12 also comprises a piezoelectric film 36 (visible in FIG. 3). The piezoelectric film 36 is arranged between a support member 38 of the control panel 12 and the covering element 40 of the control panel 12. More specifically, the piezoelectric film 36 has an inner face 40 and an outer face 42, opposite to the inner face 40. The piezoelectric film 36 makes it possible to produce electricity when the latter is deformed, folded or squeezed. The piezoelectric film 36 is in particular integrated with the right 3031940 7 of the control zone 16, 18, 20, 22, 24, 26, 28. The piezoelectric film 36 can be produced by various methods or methods. For example, as illustrated in FIG. 4, the piezoelectric film 36 has a piezoelectric disk 62 or a piezoelectric membrane. The piezoelectric disk 62 is arranged between an upper film 64 comprising an upper electrode 66 and a lower film 68 comprising a lower electrode 70. The upper and inner electrodes 66, 70 are at the right of the piezoelectric disk 62, on either side of the this one. In alternative embodiments, several piezoelectric discs 62 may be provided. To keep a constant gap between the lower and upper films 68, 64 comprising the lower and upper electrodes 70, 66 and / or between the piezoelectric discs 62, in the case of a piezoelectric film comprising several piezoelectric elements for example, a film spacer 70 may be provided. The spacer film 70 may comprise an orifice 72 inside which the piezoelectric disc 62 is placed. For example, the spacer film 70 has several orifices 72 and inside each orifice 72 is positioned a piezoelectric disk 62. Installation of the piezoelectric disk 62 may be performed by a motorized arm for example. The assembly thus formed can then be sandwiched between two film layers 74, 76 comprising an adhesive. The film layer 76 below the lower film 68 comprising the lower electrode 70 is in this case provided with an orifice 0 to allow deformation of the piezoelectric disk 62. On either side of the piezoelectric film 36 thus formed can a support element and a cladding element are arranged.
    [0006] Such a piezoelectric film 36 allows in particular 3031940 8 to ensure good sensitivity of the detection zone. Such a piezoelectric film 36 also makes it possible to achieve a haptic feedback. The haptic feedback would in particular confirm to a user that the command has been taken into account. The piezoelectric disk or the piezoelectric membrane have for example a flat circular shape. In the case of a piezoelectric film allowing haptic feedback, the diameter of the piezoelectric disk or the piezoelectric membrane will for example be at least 10 millimeters (mm). In a second embodiment, the piezoelectric film may be produced by printing, as illustrated in particular in FIG. 5. One or more piezoelectric element (s) may be printed on a film. For the printing of such a piezoelectric film, a rotary printing method, known as the "Roll to Roll" method can be used. This type of process notably allows a high volume and production speed as well as an extended printable surface, as well as repeatability of the process and little loss of material. The piezoelectric film 36 thus produced comprises, for example, as shown in FIG. 5, a dielectric layer 76, a first conductive layer 78, a SIM layer 80, a second conductive layer 82, a polyester film 84 and an adhesive film 86. On either side of the piezoelectric film 36 thus formed may be arranged a support element and a covering element. A piezoelectric film 36 produced by a rotary printing process makes it possible in particular to ensure good resistance to temperature, to allow the realization of three-dimensional (or volume) shape, to allow printing on an extended surface. It is thus possible to overmould without problems the piezoelectric film 36 thus obtained and the costs of producing such a piezoelectric film 36 are small. The control panel 12 also includes the support member 38 as previously mentioned. The support member 38 has an outer face 44 facing towards the inner face 40 of the covering member 30 and an inner face 46 opposite to said outer face 44. The support member 38 is overmolded directly on the film As shown in FIG. 3, the piezoelectric film 36 extends over a certain area between the covering member 30 and the support member 38. For example, the piezoelectric film 36 extends over the surface of the control panel 12. The inner face 40 of the piezoelectric film 36 rests on the outer face 44 of the support member 38. The outer face 42 of the piezoelectric film 36 rests on the inner face 34 of the element In the overmolding of the support element 38, at least one recess 48, 50, 52, 54 is formed directly which is formed in line with the control zone 16, 18, 20, 22, 24, 26, 28. In this case, the at least one evidem 48, 50, 52, 54 is formed opposite the piezoelectric film 36. The piezoelectric film 36 is directly integrated between the covering element 30 and the support element 38 when overmolding the support element 38. The recess 48, 50, 52, 54 created under the piezoelectric film 36 allows the piezoelectric film 36 to deform when a user bears on the trim element 30 in line with the recess 48, 50, 52, 54 .
    [0007] Thus, by placing the recess opposite the control zone 16, 18, 20, 22, 24, 26, 28, the user pressing on the control zone 16, 18, 20, 22, 24, 26 28, for example, the recess 48, 50, 52, 54 extends over a certain recess length. The control zone 16, 18, 20, 22, 3031940, 24, 26, 28 extends over a certain control length. The control length is less than the recess length. The piezoelectric film 36 is printed in front of the control zone 16, 18, 20, 22, 24, 26, 28 with conductive circuits 56 (also called conductive track), as can be seen in FIG. 3. Deformation of the film The piezoelectric element 36 at the recesses 48, 50, 52, 54 (in front of the control zone 6, 18, 20, 22, 24, 26, 28) generates an electrical signal. The electrical signal is transmitted to the conductive circuits that carry the electrical signal to one or more connectors (not shown) provided under the control panel 12. These connectors will then control the activation and / or deactivation of vehicle functions such as those described. previously. As shown in FIG. 2, the covering element 30 has seven distinct control zones 16, 18, 20, 22, 24, 26, 28. However, more or fewer than seven control areas 16, 18, 20, 22, 24, 26, 28 may be provided. Each control zone 16, 18, 20, 22, 24, 26, 28 corresponds to a recess 48, 50, 52, 54. The piezoelectric film 36 is for example continuous. The piezoelectric film 36 extends below all the control areas 16, 18, 20, 22, 24, 26, 28 and extends even beyond these control areas 16, 18, 20, 22, 24 , 26, 28. In FIG. 3, which is a sectional view along line III-III of FIG. 1, four control zones 16, 18, 20, 22, 24, 26, 28 are visible. As shown in FIG. 3, each control zone 16, 18, 20, 22, 24, 26, 28 of the covering element 30 corresponds to a recess 48, 50, 52, 54 of the support element 38. More particularly, as can be seen in FIG. 3, four recesses 48, 50, 52, 54 are provided in line with the control zones 16, 18, 20, 22, 24, 26, 28. The four recesses 48, 50, 52, 54 are formed directly upon overmolding of the support member 38. The piezoelectric film 36 extends over the entire surface between the support member 38 and the covering member 30. The piezoelectric film 36 is composed of button zones which comprise the printed portions of conductive tracks 56 (also called conductive circuits 56). As previously mentioned, these conductive tracks 56 10 bring an electrical signal to connectors provided at the rear of the dashboard to transmit the control signal of the user to the interface to be controlled. The conductive tracks 56 are printed on the inner face 40 of the piezoelectric film 36. For example, the printed conductive track 56 extends over a certain track length, and the track length is less than the recess length. The zones of the support element 38 in direct contact with the piezoelectric film 36, especially in the vicinity of the piezoelectric film 36, make it possible to stiffen the zones of the piezoelectric film 36 which are not intended to be deformed. In other words, the areas of the reinforcing element in direct contact with the piezoelectric film 36 are situated facing portions 25 of the covering element 30 which do not comprise control zones 16, 18, 20 , 22, 24, 26, 28. The piezoelectric film is integrated with the covering element 30 and the support element 38 during overmolding of the support element 38.
    [0008] Thus, to manufacture the control panel 12, a mold is first provided. In this mold the cladding element 30 is firstly installed. On top of the cladding element 30, the piezoelectric film 36 is deposited. When the piezoelectric film 36 is removed, it is ensured that that the zones comprising conductive tracks 56 printed on the piezoelectric film 36 are opposite zones intended to form the control zones on the covering element 30. The piezoelectric film 36 can be held in position 5 in the mold on the covering element 30, for example by suction. Other piezoelectric film holding systems 36 in the mold may be provided, such as a mechanical holding system with clips or clips. Adhesive areas 58, 60 may be provided on the piezoelectric film 36 to allow it to adhere to the trim member 30 and / or the support member 38. For example, the adhesive areas 58 , 60 may be activated under the effect of heat during overmolding of the support member 38. The adhesive zones 58, 60, 15 made for example by hot-melt glues, can be printed directly on the piezoelectric film 36. For example, an adhesive zone 58 is provided on the outer face 42 of the piezoelectric film 36. Under the effect of heat, the adhesive zone 58 is activated so that the piezoelectric film 36 sticks to the covering element 30. The covering element 30 comprises for example an aluminum material. However, other materials can be provided. The implementation of a piezoelectric film 36 in a dashboard comprising a cladding element 30 of aluminum material is particularly advantageous, the aluminum not interfering with the piezoelectric film 36.
    权利要求:
    Claims (10)
    [0001]
    REVENDICATIONS1. Control panel (12) intended to be arranged inside a vehicle interior (1) and comprising: - a covering element (30) having an outer face (32) intended to be oriented in the direction of the passenger compartment and an inner face (34) opposite to said outer face (32), the outer face (34) having at least one control zone (16, 18, 20, 22, 24, 26, 28), - a support member (38) having an outer face (44) facing the inner face (32) of the cladding member (30) and an inner face (46) opposite to said outer face (44); a piezoelectric film (36), characterized in that the piezoelectric film (36) extends between the covering element (30) and the support element (38), in that the support element (38) ) has at least one recess (48, 50, 52, 54) in line with the control zone (16, 18, 20, 22, 24, 26, 28).
    [0002]
    The control panel (12) according to claim 1, wherein the piezoelectric film (36) is integrated between the trim member (30) and the support member (38) by overmolding the support member. (38). 25
    [0003]
    The control panel (12) according to claim 1 or 2, wherein the cladding element (30) has a plurality of control zones (16, 18, 20, 22, 24, 26, 28), support member (38) has a plurality of recesses (48, 50, 52, 54) and at each control zone (16, 18, 20, 22, 24, 26, 28) there is a recess (48, 50, 52, 54) of the support member (38) and a piezoelectric film portion (36).
    [0004]
    4. A control panel (12) according to any one of claims 1 to 3, wherein the cladding member (30) comprises an aluminum material. 3031940 14
    [0005]
    A control panel (12) according to any one of claims 1 to 4, wherein the piezoelectric film (36) has an outer face facing the cladding element (30) and an inner face facing the support member (38), and wherein the piezoelectric film (36) comprises a heat-reactive adhesive material, the heat-reactive adhesive material being disposed on the inner face (40) and / or the outer face (42) of the film piezoelectric (36).
    [0006]
    6. Control panel (12) according to any one of claims 1 to 5, wherein the piezoelectric film (36) comprises at least one conductive track (56) printed arranged facing the at least one recess (48, 50, 52, 54).
    [0007]
    The control panel (12) according to claim 6, wherein the recess (48, 50, 52, 54) extends over a recess length, wherein the printed conductive track (56) extends over a certain length of track, and the track length is less than the recess length.
    [0008]
    8. Vehicle dashboard with a control panel (12) according to any one of claims 1 to 7.
    [0009]
    9. A method of manufacturing a control board (12) to be arranged inside a vehicle interior (1) comprising the steps of: - providing an injection molding machine with a mold, providing a trim element (30) having an outer face to be oriented towards the passenger compartment and an inner face opposite to said outer face, the outer face having at least one control zone (16, 18, 20, 22, 24, 26, 28), - positioning of the covering element (30) in the mold, - providing a piezoelectric film (36) having an inner face (40) and an outer face (42), - positioning and holding in position the piezoelectric film (36) in the mold, the outer face (42) 5 of the piezoelectric film (36) being disposed on the inner face (40) of the element covering (30), - forming a support element (38) by overmolding in the material mold on a portion of the inner face (40) of the piezoelectric film (36), the formed support member (38) having an outer face (44) facing the inner face (34) of the cladding element (30) and an inner face (46) opposite to said outer face and a recess (48, 50, 52, 54) in line with the control zone (16, 18, 20, 22, 24, 26 , 28), and - integrating the piezoelectric film (36) between the covering element (30) and the support element (38) during the overmolding step of the support element (38)
    [0010]
    10. The method of claim 9, wherein the outer face of the piezoelectric film (36) adheres to the trim member (30), and wherein the inner face (40) of the piezoelectric film (36) adheres to the skin. support member (38) when injecting material into the mold.
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    同族专利:
    公开号 | 公开日
    FR3031940B1|2017-02-17|
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    US20160218712A1|2016-07-28|
    EP3051698A1|2016-08-03|
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    法律状态:
    2015-12-22| PLFP| Fee payment|Year of fee payment: 2 |
    2016-07-29| PLSC| Search report ready|Effective date: 20160729 |
    2016-12-21| PLFP| Fee payment|Year of fee payment: 3 |
    2017-12-21| PLFP| Fee payment|Year of fee payment: 4 |
    2018-12-20| PLFP| Fee payment|Year of fee payment: 5 |
    2020-10-16| ST| Notification of lapse|Effective date: 20200910 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1550631A|FR3031940B1|2015-01-27|2015-01-27|CONTROL PANEL FOR VEHICLE AND METHOD FOR MANUFACTURING SUCH CONTROL PANEL|FR1550631A| FR3031940B1|2015-01-27|2015-01-27|CONTROL PANEL FOR VEHICLE AND METHOD FOR MANUFACTURING SUCH CONTROL PANEL|
    EP16152278.4A| EP3051698B1|2015-01-27|2016-01-21|Control panel for a vehicle and method for manufacturing such a control panel|
    US15/008,011| US10367503B2|2015-01-27|2016-01-27|Control panel for vehicle and method for manufacturing such control panel|
    CN201610054341.6A| CN105827228B|2015-01-27|2016-01-27|Vehicle control panel and method of manufacturing such a control panel|
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