• 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:
    The invention relates to an optical unit (1) for a motor vehicle, said optical unit (1) comprising a housing (10), adapted to receive at least one light source, and at least one fixing lug (20) connected to said housing (10) and comprising an attachment zone to the structure of a motor vehicle, an absorption zone adapted to receive a portion of the energy transferred during the closure of the hood of said vehicle and a plurality of connection legs of the bracket (20) to the housing (10) able to deform during an impact suffered by said optical unit (1).
    公开号:FR3067306A1
    申请号:FR1755083
    申请日:2017-06-08
    公开日:2018-12-14
    发明作者:Rodolphe Peron
    申请人:Peugeot Citroen Automobiles SA；
    IPC主号:
    专利说明:

    OPTICAL BLOCK FOR MOTOR VEHICLE [001] The invention relates, in general, to the field of optical blocks for motor vehicles and relates more particularly to a secure optical block making it possible to absorb part of the energy resulting from an impact. with a pedestrian, in particular his head, in order to reduce the consequences of such a shock on said pedestrian.
    [002] A motor vehicle comprises in known manner optical units or headlights mounted on the front and on the rear of said vehicle. These optical units allow, on the one hand, to illuminate the environment of the vehicle to improve the visibility of the driver, especially in night conditions, and, on the other hand, to signal the position of the vehicle to other road users.
    Each front optical unit includes one or more fixing lugs for fixing the optical unit on the vehicle. In a known form of front optical unit, an upper fixing lug makes it possible to fix the optical unit to a front fender of the vehicle using a screw and a nut.
    This upper fixing lug must be dimensioned so as to meet safety standards, such as the EuroNCAP standard, requiring limiting the resistance at the front of the vehicle in order to limit damage both to the vehicle itself. same as on its environment. In particular, it is desirable to limit the damage done to a pedestrian in the event of an impact between the optical unit and said pedestrian, in particular his head.
    We know from document FR2844757, a front optical unit comprising breakable fixing lugs. However, in this solution, the upper fixing lug is not suitable for receiving a shock from the cover when the latter is closed, which can damage the optical unit and has a first drawback. In addition, the breakable fixing lugs allow only a depression of the optical unit in one direction, which does not sufficiently limit the damage done to the head of a pedestrian during an impact and has a second drawback.
    The invention therefore aims to solve these drawbacks by proposing a front light unit which allows effective deformation in the event of an impact, in particular with the head of a pedestrian, while making it possible to absorb part of the energy transferred. when closing the hood of the vehicle.
    To achieve this result, the present invention relates to an optical unit for a motor vehicle, said optical unit comprising a housing, adapted to receive at least one light source, and at least one fixing lug connected to said housing and comprising a fastening zone to the structure of a motor vehicle, an absorption zone adapted to receive a part of the energy transferred during the closing of the hood of said vehicle and a plurality of connecting branches of the fastening tab to the housing suitable to deform during a shock undergone by said optical unit.
    The plurality of connecting branches allows a displacement in translation and / or rotation of a few millimeters of the housing of the optical unit during an impact with an external entity such as, for example, the head of a pedestrian. The plurality of connecting branches in particular constitutes a fusible zone which can easily break in the event of a violent shock suffered by the optical unit, in particular in order to limit damage to the head of a pedestrian. In addition, the plurality of connecting branches gives flexibility to the connecting tab which advantageously allows the absorption zone to efficiently absorb part of the energy transferred when the hood of the vehicle is closed.
    Preferably, the housing comprising a body made of a plastic material, the fixing lug and said body are made of the same material.
    Advantageously, at least one of the connecting branches of the plurality of connecting branches comprises a notch making it possible to facilitate twisting or even breaking of the fixing lug.
    Preferably, each connecting branch of the plurality of connecting branches comprises a notch so that the fixing lug easily breaks in the event of a violent impact.
    In one embodiment, at least one connecting branch of the plurality of connecting branches connects the housing and the fixing area and at least one connecting branch of the plurality of connecting branches connects the housing and the area absorption. This allows the housing to be securely attached to the attachment area and the absorption area in the absence of impact on the optical unit.
    According to one aspect of the invention, the plurality of connecting branches is dimensioned to break when a force greater than or equal to 40 daN is applied parallel to a vertical axis when the optical unit is mounted on a motor vehicle.
    According to another aspect of the invention, the plurality of connecting branches is dimensioned to break when a force greater than or equal to 60 daN is exerted parallel to a longitudinal axis of the optical unit, orthogonal to a vertical axis, when the optical unit is mounted on a motor vehicle.
    Advantageously, the absorption zone comprises a central portion, constituting a stop for a motor vehicle hood, and a peripheral portion, at least one lumen being formed between said central portion and said peripheral portion so that the central portion breaks when subjected to too great a slamming effort from the hood of the vehicle when the optical unit is mounted on a motor vehicle.
    In one embodiment, the central portion is a disc connected to the peripheral portion by at least two connecting elements, preferably four.
    Advantageously, the absorption zone is configured so that the central portion breaks when a force greater than or equal to 35 daN, generated by the slamming of a car hood, is applied to the central portion.
    The invention also relates to a motor vehicle comprising a structure and at least one optical unit as described above, said optical unit being fixed to said structure of the motor vehicle, for example at the front wing, of the engine block or the vehicle chassis.
    Other characteristics and advantages of the invention will appear on reading the detailed description of the embodiments of the invention, given by way of example only, and with reference to the drawings which show:
    • Figure 1, a diagram of an embodiment of the optical unit according to the invention, • Figure 2, a diagram of the upper mounting lug of the optical unit of Figure 1, • Figure 3, another diagram of the fixing lug of FIG. 2, and • FIG. 4, a partial close-up view of the connecting branches of the fixing lug of FIGS. 2 and 3.
    In what follows, the embodiments described relate more particularly to an implementation of the device according to the invention in a motor vehicle. However, any implementation in a different context, in particular in any type of vehicle, is also covered by the present invention.
    Figures 1 to 4 show an optical unit 1 intended to be mounted on the support structure of a motor vehicle (not shown), for example on a front fender of said vehicle or any other suitable element of the vehicle structure . The optical unit 1 is in the form of an elongated element extending along a longitudinal axis.
    In these figures, an orthogonal coordinate system (X, Y, Z) is defined where:
    - X is a first axis which is parallel to the longitudinal axis of the motor vehicle when the optical unit 1 is mounted on said vehicle,
    - Y is a second axis which is parallel to the longitudinal axis of the optical unit 1,
    - Z is a third axis which is parallel to the earth's vertical.
    In the example of Figure 1, the optical unit 1 first comprises a housing 10 and a plurality of fixing lugs 20, 21, 22 connected to said housing 10 in order to fix the optical unit 1 on the structure of a motor vehicle.
    Referring to Figure 1, the housing 10 comprises a body 110, for example made of a plastic material, on which is mounted a transparent wall 120, for example made of a plastic material, so as to form an interior space suitable for receiving a light source (not shown). The wall 120 allows the passage of the light produced by the light source in order to illuminate the environment of the vehicle, to assist the driver (for example in "high beam" mode) or to indicate a direction to the other users of the road (for example in "directional flashing indicator" mode).
    In this example, the optical unit 1 comprises an upper fixing lug 20 and two lower fixing lugs 21, 22 but it goes without saying that the optical unit 1 could comprise a different number of fixing lugs as much higher than 'lower without limiting the scope of the present invention.
    Referring to Figure 2, the upper fixing lug 20 includes a fixing zone 210 to the structure of a motor vehicle, an absorption zone 220 adapted to receive part of the energy transferred during the closing the hood of said vehicle and a plurality of connecting branches 230-1, 230-2 of the bracket 20 to the housing 10 capable of being deformed during a shock suffered by said optical unit 1.
    In this preferred example, the body 110 of the housing 10 and the fixing lug 20 are made of the same material and made of a plastic material.
    The fixing area 210 allows to fix the fixing lug 20 on the vehicle structure. To this end, an opening 210A is formed in the fixing zone 210 in order to allow the passage of a fixing element, for example a screw (not shown).
    The absorption zone 220 includes a central portion 220A and a peripheral portion 220B.
    The central portion 220A constitutes a stop for the hood of the motor vehicle. In the example illustrated in particular in Figures 2 and 3, the central portion 220A is in the form of a disc connected to the peripheral portion by four connecting elements 220C. More specifically, four lights were formed between the central zone 220A and the peripheral zone 220B so that the central portion 220A breaks when it is subjected to too great a slamming effort from the hood of the vehicle.
    Advantageously, the absorption zone 220 is configured so that the central portion 220A breaks when a force, greater than or equal to 35 daN, generated by the slamming of a car hood, is applied to the central portion 220A.
    The plurality of connecting branches 230-1, 230-2 makes it possible to facilitate the movement and / or the twisting or even the breaking of the fixing lug 20 in the event of an element impacting on the optical unit 1 when this the latter is mounted on the vehicle.
    In the embodiment illustrated in Figure 2, four connecting branches 2301 connect the body 110 of the housing 10 and the fixing area 210 and a connecting branch 2302 connects the body 110 of the housing 10 and the area absorption 220.
    As illustrated in Figure 4, each connecting branch 230-1 connecting the body 110 to the fixing area 210 includes a notch 231 so that the fixing lug 20 easily breaks in the event of a violent impact. In other words, the connecting branches 230-1 each comprise a necking region at the notch 231, that is to say that the cross section of the connecting branch 230-1 is smaller at the notch only at the level of the other portions of said connecting branch 230-1.
    Preferably, the plurality of connecting branches 230-1, 230-2 is dimensioned to break when a force greater than or equal to 40 daN is applied to the optical unit
    1 parallel to a vertical axis Z when the optical unit 1 is mounted on the motor vehicle.
    More preferably, the plurality of connecting branches 230-1, 230-2 is dimensioned to break when a force greater than or equal to 60 daN is exerted parallel to a longitudinal axis Y of the optical unit 1, orthogonal to the vertical axis Z, when the optical unit 1 is mounted on the motor vehicle.
    The optical unit 1 can thus be fixed on a motor vehicle without risk of sagging of its front face in order to maintain the perceived quality, while allowing movement of the housing 10 in translation and / or in rotation by a few millimeters in in the event of an impact, in particular by breaking the fixing lug 20. This makes it possible to reduce the resistance of the vehicle and thus meet the requirements of the standards in particular during an impact with the head of a pedestrian.
    权利要求:
    Claims (10)
    [1" id="c-fr-0001]
    Claims:
    1. Optical unit (1) for a motor vehicle, said optical unit (1) comprising a housing (10), adapted to receive at least one light source, and at least one fixing lug (20) connected to said housing (10) and comprising an attachment zone (210) to the structure of a motor vehicle, an absorption zone (220) adapted to receive part of the energy transferred when the hood of said vehicle is closed and a plurality of branches of connection (230) of the fixing lug (20) to the housing (10) capable of deforming during a shock undergone by said optical unit (1).
    [2" id="c-fr-0002]
    2. Optical unit (1) according to claim 1, in which the housing (10) comprising a body (110) made of a plastic material, the fixing lug (20) and said body (110) are made from the same material .
    [3" id="c-fr-0003]
    3. Optical unit (1) according to one of the preceding claims, wherein at least one of the connecting branches (230) of the plurality of connecting branches (230) comprises a notch (231).
    [4" id="c-fr-0004]
    4. optical unit (1) according to the preceding claim, wherein each connecting branch (230-1, 230-2) of the plurality of connecting branches (230-1, 230-2) comprises a notch (231).
    [5" id="c-fr-0005]
    5. Optical unit (1) according to one of the preceding claims, in which at least one connecting branch (230-1) of the plurality of connecting branches (230-1,230-2) connects the housing (10) and the fixing zone (210) and at least one connecting branch (230-2) of the plurality of connecting branches (230-1, 230-2) connects the housing (10) and the absorption zone (220).
    [6" id="c-fr-0006]
    6. Optical unit (1) according to one of the preceding claims, in which the plurality of connecting branches (230-1, 230-2) is dimensioned to break when a force greater than or equal to 40 daN is applied parallel to a vertical axis when the optical unit (1) is mounted on a motor vehicle.
    [7" id="c-fr-0007]
    7. Optical unit (1) according to one of the preceding claims, in which the absorption zone (220) comprises a central portion (220A), constituting a stop for a motor vehicle hood, and a peripheral portion (220B) , at least one lumen being formed between said central portion (220A) and said peripheral portion (220B).
    [8" id="c-fr-0008]
    8. Optical unit (1) according to the preceding claim, wherein the central portion (220A) is a disc connected to the peripheral portion (220B) by at least two
    5 connecting elements (220C).
    [9" id="c-fr-0009]
    9. Optical unit (1) according to one of claims 7 and 8, in which the absorption zone (220) is configured so that the central portion (220A) breaks when a force greater than or equal to 35 daN , generated by the banging of a car hood, is applied to the central portion (220A).
    [10" id="c-fr-0010]
    10. Motor vehicle comprising a structure and at least one optical unit (1) according to one of the preceding claims, said optical unit (1) being fixed to said structure of the motor vehicle.
    类似技术:
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    FR2978412A1|2013-02-01|FRONT PANEL MODULE OF MOTOR VEHICLE.
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    FR3086227A1|2020-03-27|MOTOR VEHICLE PROJECTOR SUPPORT.
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    FR2943981A1|2010-10-08|FASTENING LEG FOR A PROJECTOR AND EQUIPPED VEHICLE
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    同族专利:
    公开号 | 公开日
    EP3412506B1|2020-03-11|
    FR3067306B1|2020-08-28|
    CN109017540A|2018-12-18|
    EP3412506A1|2018-12-12|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR2710592A1|1993-09-30|1995-04-07|Peugeot|Motor vehicle headlamp equipped with elastic stops|
    FR2870922A1|2004-06-01|2005-12-02|Valeo Vision Sa|Motor vehicle headlight has housing with controlled deformation zone to provide at least partial absorption of impact shocks|
    JP2006027488A|2004-07-20|2006-02-02|Koito Mfg Co Ltd|Mounting structure of lighting fixture for vehicle|
    US20080290692A1|2007-05-21|2008-11-27|Brian Boggess|Energy absorbing vehicle hood stopper assembly|
    FR2929668A1|2008-04-04|2009-10-09|Peugeot Citroen Automobiles Sa|Fixation screw for fixing e.g. component of motor vehicle, has head for screwing tool and including tapping in which threaded rod is adjustably screwed comprising another head forming adjustable stop|
    WO2012122968A2|2011-03-16|2012-09-20|Decoma Gmbh|Fitting part|
    GB2506206A|2012-09-25|2014-03-26|Jaguar Land Rover Ltd|Sacrificial bracket and method of supporting a structure for vehicle headlight having sacrificial part|
    US8720975B1|2012-12-19|2014-05-13|Ford Global Technologies, Llc|Integrated hood bump-stop and headlamp attachment for pedestrian protection|
    JP2015098256A|2013-11-19|2015-05-28|トヨタ車体株式会社|Lamp mounting structure|FR3112730A1|2020-07-27|2022-01-28|Psa Automobiles Sa|Optical box for a motor vehicle headlamp comprising at least one fixing lug allowing rupture kinematics according to two distinct constraints|FR2844757B1|2002-09-20|2005-10-07|Valeo Vision|MOTOR VEHICLE PROJECTOR COMPRISING IMPROVED VEHICLE CHASSIS CONNECTION MEANS|FR3102830A1|2019-10-30|2021-05-07|Psa Automobiles Sa|Device for mounting a projector housing on a motor vehicle|
    FR3113007A1|2020-07-30|2022-02-04|Psa Automobiles Sa|Optical box for a motor vehicle headlamp comprising a fixing lug having better mechanical resistance to vibrations|
    法律状态:
    2018-12-14| PLSC| Search report ready|Effective date: 20181214 |
    2020-05-20| PLFP| Fee payment|Year of fee payment: 4 |
    2021-05-19| PLFP| Fee payment|Year of fee payment: 5 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1755083A|FR3067306B1|2017-06-08|2017-06-08|OPTICAL BLOCK FOR AUTOMOTIVE VEHICLES|
    FR1755083|2017-06-08|FR1755083A| FR3067306B1|2017-06-08|2017-06-08|OPTICAL BLOCK FOR AUTOMOTIVE VEHICLES|
    EP18173793.3A| EP3412506B1|2017-06-08|2018-05-23|Optical unit for motor vehicle|
    CN201810579364.8A| CN109017540A|2017-06-08|2018-06-07|Optical unit for motor vehicles|
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