• 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 vehicle dashboard crossmember (10) has a tubular portion (18) extending in a longitudinal direction (X), a first leg (30) connected to the tubular portion (18), and intended to be fixed to a lower crossbeam (36) of the body (16) of the vehicle (14), and a second leg (38), connected to the tubular portion (18) and intended to be fixed to a apron (44) of the body (16) of the vehicle (14). The ends of the first and second struts (30; 38) at the tubular portion (18) are located in the same transverse plane of the tubular portion (18).
    公开号:FR3069517A1
    申请号:FR1757115
    申请日:2017-07-26
    公开日:2019-02-01
    发明作者:Laurent Baudart
    申请人:Faurecia Interieur Industrie SAS；
    IPC主号:
    专利说明:

    INSTRUMENT PANEL WITH CLEAR FORCE LEG FOR MOTOR VEHICLE
    Field of the invention
    The present invention relates to a dashboard cross member for a vehicle (or CCB, from the English “Cross Car Beam”). The invention also relates to a dashboard assembly for a vehicle comprising such a cross member and to a vehicle comprising such a dashboard assembly.
    Description of the prior art
    It is known from the prior art a dashboard cross member 1 for a motor vehicle as illustrated in FIG. 1. Such a cross member 1 makes it possible in particular to connect the dashboard to the body of the motor vehicle. Such a cross member 1 also has a safety function, by absorbing part of the energy in the event of a frontal impact causing deformation of the body, in order to limit the deformation of the dashboard.
    Such a cross member 1 is generally fixed to the lateral uprights of the body of the motor vehicle, by its two longitudinal ends 2, 3, at the level of the floor of the body, as well as to the lower cross member of the bay to the right of the steering column. .
    To do this, the cross member 1, illustrated in Figure 1 comprises a strut 4 intended to be fixed on the body of the motor vehicle, at the floor. The strut 4 is an arm extending transversely from a tubular portion 5 of the cross member 1, extending between the two ends 2, 3, of the cross member 1. This strut 4 extends to the floor .
    Such a strut 4 has a large bulk. In particular, as is particularly visible in FIG. 2, this strut 4 extends inside the passenger compartment of the motor vehicle. Also, so that this leg 4 is not visible to the occupants of the motor vehicle, there is generally provided a covering (not shown in Figure 2) projecting from the dashboard 6, in the passenger compartment. This covering can also make it possible to house an air conditioning unit 7.
    Summary of the invention
    The object of the present invention is to propose a dashboard cross member not having at least some of the drawbacks of the prior art. In particular, the invention aims to provide a dashboard cross member giving more freedom for the design of the dashboard and the interior of vehicles, especially motor vehicles.
    To this end, the invention proposes a dashboard cross member for a vehicle comprising a tubular portion extending in a longitudinal direction between a first end, intended to be placed on the side of a driver of the vehicle, and a second end, intended to be placed on the passenger side of the vehicle, the cross member comprising:
    - A first strut extending between a first end of the first strut, connected to the tubular portion, and a second end of the first strut, intended to be fixed to a lower cross member of the body bay of the vehicle, and
    a second strut extending between a first end of the second strut, connected to the tubular portion, and a second end of the second strut, intended to be fixed to an apron of the vehicle body, the first ends of the first and second struts being located in the same transverse plane of the tubular portion.
    Thus, advantageously, the fixing of the crosspiece of the dashboard can only be carried out on the deck and the lower cross member of the bay of the body of the motor vehicle. In this case, no strut is expected which is oriented towards the passenger compartment. This therefore limits the size of this dashboard crossmember. It is no longer necessary to provide a corresponding covering, projecting into the passenger compartment.
    According to preferred embodiments, the dashboard crosspiece according to the invention has one or more of the following characteristics, taken alone or in combination:
    the dashboard cross member comprises a third strut, extending between a first end of the third strut, connected to the tubular portion, and a second end of the third strut, intended to be fixed to the lower cross member of the vehicle body;
    the dashboard cross member comprises another strut, extending between a first end of said other strut connected to the tubular portion, and a second end of said other strut intended to be fixed to the apron of the vehicle body;
    the first ends of the third strut and the other strut being located in the same transverse plane of the tubular portion;
    the dashboard cross member is devoid of any strut intended to be fixed to a floor of the vehicle body;
    the first ends of the first and second struts are located at a distance from the first end of the tubular portion between a quarter and half the length of the tubular portion;
    the first end of the third strut and / or the first end of said other strut is located at a distance from the first end of the tubular portion between half and three-quarters of the length of the tubular portion ; and at least one, preferably all, of the first strut, the second strut, the third strut and said other strut are adapted to be fixed between their first and second ends on a ventilation block of the vehicle.
    According to another aspect, the invention also relates to a dashboard assembly for a vehicle, comprising a dashboard, a dashboard crossmember as described above in all its combinations, the dashboard being fixed. to the dashboard cross member.
    The dashboard assembly may further include an air conditioning unit in a housing, in which:
    - At least one, preferably all, among the first strut, the second strut, the third strut and said other strut are fixed, between their first and second ends, on the housing of the ventilation unit ; and / or in which
    - The ventilation unit housing forms at least one, preferably all, among the first strut, the second strut, the third strut and said other strut.
    According to yet another aspect, the invention relates to a vehicle comprising a body with an apron and a lower bay cross member, a body delimiting a passenger compartment for occupants of the vehicle, and a dashboard assembly as described above. front in all combinations, such that the dashboard crossmember is fixed to the bulkhead and the lower bay crossmember of the vehicle body.
    Brief description of the drawings
    Other characteristics and advantages of the invention will appear during the following description of nonlimiting exemplary embodiments, with reference to the accompanying drawings.
    In the drawings:
    FIG. 1 is a perspective view of a first known example of a dashboard cross member for a motor vehicle,
    FIG. 2 is a perspective view of a dashboard assembly including the dashboard cross member of FIG. 1,
    FIG. 3 schematically represents in perspective another example of a dashboard cross member,
    FIGS. 4 and 5 illustrate an example of attachment of the dashboard cross member of FIG. 3 to the body of a motor vehicle, respectively in perspective and in top view,
    FIG. 6 illustrates a dashboard assembly including the dashboard of FIG. 3,
    FIG. 7 schematically illustrates in top view, the deformations of the dashboard cross member of FIG. 3 and of the body on which it is fixed, in the event of a frontal impact,
    FIGS. 8 and 9 each illustrate a variant of attachment of the dashboard cross member of FIG. 3,
    - Figures 10 and 11 each illustrate another example of a dashboard cross member, perspective view.
    Detailed description of the invention
    In the various figures, the same references designate elements which are identical or of identical function. Only the differences between the different examples presented are described in detail.
    FIG. 3 represents a dashboard cross member 10 for a motor vehicle. This cross member 10 can in particular be made of metal, plastic or composite material. In particular, the crosspiece 10 can be made of plastic material loaded with glass fibers and / or carbon. The cross member 10 is intended to form a structural element of the dashboard 12 of the motor vehicle 14. The cross member 10 is in particular intended to stiffen the body 16 of the motor vehicle 14 and / or to support equipment of the motor vehicle 14, in particular the dashboard 12 and / or a steering column and / or air ducts of an air conditioning system for the passenger compartment of the motor vehicle.
    The dashboard cross member 10 can be made in one piece. However, as a variant, it is carried out in pieces.
    The dashboard cross member 10 comprises a tubular portion 18. This tubular portion 18 extends in a longitudinal direction X between a first 20 and a second 22 ends of the tubular portion 18. Here, the tubular portion is in one piece. As a variant, however, the tubular portion is formed in pieces, in particular in sections. The first end 20 of the dashboard cross member 10 is intended to be fixed to the body 16 of the motor vehicle 14 on the driver's side of the motor vehicle 14. On the contrary, the second end 22 of the dashboard cross member 10 is intended to be fixed to the body 16 of the motor vehicle 14 on the side of a passenger of the motor vehicle 14. In particular, the first 20 and second 22 ends of the dashboard cross member 10 are for example fixed, as shown in Figures 4 and 5, on the side uprights of the body 16 of the motor vehicle 14. Here, at each of its ends 20, 22, the dashboard cross member 10 is provided with a bracket 24, 26 adapted to allow this fixing .
    It will be recalled here that the body of a motor vehicle comprises, from front to rear, an engine compartment which is closed by a cover and which is separated from the passenger compartment of the vehicle by an apron and, in the upper part, by a cross member lower bay. The lower bay cross member can be in one piece with the deck. The lower bay cross member is distinguished from the deck by the fact that it extends substantially horizontally while the deck extends rather vertically or at an angle in the vertical direction. The lower bay crossmember is intended to support a lower part of a windshield.
    On the first half of the tubular portion 18, which extends between the first end 20 of the tubular portion 18 and the middle of the tubular portion 18, the dashboard cross member 10 is provided with a steering column support 28.
    Furthermore, in the vicinity of the first end 20 of the dashboard cross member 10, a first strut 30 (or tie rod) extends between a first end 32 of the first strut 30, connected to the tubular portion 18, and a second end 34 of the first strut 30. This second end 34 of the first strut 30 is intended to be fixed to the body 16 of the motor vehicle 14, in particular to the lower cross member of the bay 36 of the body 14 of the motor vehicle 14.
    By "in the vicinity of the first end" is meant here that this first strut 30 is closer to the first end 20 than to the second end 22 of the dashboard cross member 10.
    Still in the vicinity of the first end 20 of the dashboard cross member 10, a second strut 38 extends between a first end 40 of the second strut 38, connected to the tubular portion 18, and a second end 42 of the second strut 38. This second end 42 of the second strut 38 is intended to be fixed to the body 16 of the motor vehicle, in particular to the bulkhead 44 of the body 14 of the motor vehicle.
    The first strut 30 and / or the second strut 38 may be planar. In particular, the first strut 30 and / or the second strut 38 may extend substantially along a transverse plane of the tubular portion 18, defined with respect to the longitudinal direction X of the tubular portion 18. As a variant, the first strut 30 and / or second strut 38 extend out of a transverse plane of the dashboard cross member 10.
    The first and second legs 30, 38 are preferably independent. In other words, the first and second legs 30, 38 do not have common parts, each of the first and second legs 30, 38 extending linearly between its first and second ends 32, 34, 40, 42 without being in contact with each other. In particular, the first ends 32, 40 of the first and second struts 30, 38 are separate. However, these first ends 32, 40 of the first and second struts 30, 38 are included in the same transverse plane PI of the tubular portion 18. In other words, these first ends 32, 40 of the first and second legs of force 30, 38 are located substantially at the same distance from the first end 20 of the tubular portion 18 of the dashboard cross member 10. However, these first ends 32, 40 of the first and second struts 30, 38 are offset angularly around the periphery of the tubular portion 18. Thus, when the first and second struts 30, 38 are plane, these first and second struts 30, 38 can extend in the same transverse plane PI of the tubular portion 18. However, in the example illustrated and as is more particularly visible in FIG. 5, the first and second struts 30, 38 are here curved so as to extend end outside the PI plane. As illustrated, the concavities of the first and second struts 30, 38 can then be opposed. Here, these concavities are opposite so that when viewed from above, the first and second struts 30, 38 substantially form a "V".
    As illustrated in Figures 3 to 6, the first and second struts 30, 38, are such that their first ends 32, 40 are at a distance from the first end 20 of the tubular portion 18 between a quarter and a half of the total length of the tubular portion 18. The length of the tubular portion 18 is measured in the longitudinal direction X.
    In the example of Figures 3 to 6, a third strut 46 is provided. This third strut 46 extends between a first end 48 of the third strut 46, connected to the tubular portion 18, and a second end 50 of the third strut 46. This second end 50 of the third leg by force 46 is fixed, as illustrated in FIG. 4, to the body 16 of the motor vehicle, in particular to the lower bay cross member 36 of the body 16 of the motor vehicle 14.
    The first end 40 of this third strut 46 is located in the vicinity of the second end 22 of the tubular portion 18, that is to say closer to this second end 22 than to the first end 20 of the tubular portion 18.
    As for the first and second struts 30, 38, the third strut 46 may be planar. In particular, the third strut 46 may extend in a transverse plane relative to the longitudinal direction X of the tubular portion 18. On the contrary, as a variant and as illustrated in FIGS. 3 to 6, the third strut 46 is curved so as to extend out of a transverse plane with respect to the longitudinal direction X of the tubular portion 18.
    In the example illustrated in Figures 3 to 6, in addition, another or fourth strut 52 is provided. This fourth strut 52 extends between a first end 54 of the fourth strut 52, connected to the tubular portion 18, and a second end 56 of the fourth strut 52. This second end 54 of the fourth leg of force 52 is fixed, as illustrated in FIG. 4, to the body 16 of the motor vehicle, in particular to the bulkhead 44 of the body 16 of the motor vehicle 14.
    The first end 54 of this fourth strut 52 is located in the vicinity of the second end 22 of the tubular portion 18, that is to say closer to this second end 22 than to the first end 20 of the tubular portion 18.
    The fourth strut 52 can be flat. In particular, the fourth strut 52 may extend in a transverse plane relative to the longitudinal direction X of the tubular portion 18. On the contrary, as a variant and as illustrated in FIGS. 3 to 6, the fourth strut 52 is curved so as to extend out of a transverse plane with respect to the longitudinal direction X of the tubular portion 18.
    In addition, as for the first and second struts 30, 38, the first ends 48, 54 of the third and fourth struts 46, 52 are advantageously located in the same transverse plane P2 defined with respect to the longitudinal direction X of the tubular portion 18. In other words, these first ends 48, 54 of the third and fourth struts 46, 52 are located at the same distance from the first end 20 of the tubular portion. This distance is, for example, between half and three-quarters of the total length of the tubular portion 18.
    As illustrated in FIGS. 3 to 6, the third and fourth struts 46, 52 are curved so as to extend out of a transverse plane relative to the longitudinal direction X of the tubular portion 18. More precisely, the concavities third and fourth struts 46, 52 are opposite so that these third and fourth struts 46, 52 substantially form a "V" when viewed from above (see Figure 5).
    Advantageously, as illustrated in FIGS. 3 to 6, the dashboard cross member 10 is devoid of any strut intended to be fixed to a floor of the body 16 of the motor vehicle 14, in particular to a tunnel in the floor of the body 16. The tunnel of the floor of the body 16 is understood to mean the cross-sectional portion substantially in a “U” oriented downwards, formed on the floor of the body 14 to receive in particular one or more exhaust ducts and / or a transmission shaft. Thus, it is possible to obtain a passenger compartment, delimited by the bodywork of the motor vehicle, as partially illustrated in FIG. 6, in which no trim projects from the dashboard 12.
    FIG. 7 illustrates the deformations of the dashboard cross member 10 in the event of a frontal impact. Indeed, as indicated in the introduction to the application, the dashboard cross member 10 is a structural element whose deformations must be limited in the event of a frontal impact in order to limit the deformations of the dashboard 12 in the passenger compartment. Such deformations are particularly dangerous for the occupants of the motor vehicle.
    However, in the absence of a strut attached to the floor of the body of the motor vehicle, the cross member is a priori more easily deformable. One solution to stiffen this cross member could be to increase its weight. It turns out that it is necessary to increase this weight by about a third to obtain equivalent performance in the event of an impact. Of course, such an increase in weight is not acceptable.
    In the case of the example illustrated in FIG. 7, the struts 30, 38 or even 46, 52 make it possible to obtain acceptable deformation results of the dashboard cross member 10. To do this, it may be advantageous to strengthen the body near the attachment points of these struts 30, 38, 46, 52 on the body 16. In particular the thickness of the body 16 can be increased in the vicinity of these fixing points. The thickness of the body 16 can in particular be increased by forming beads, ribs or any other type of relief accessible to those skilled in the art.
    In the event of a frontal impact, as illustrated in FIG. 7, the lower bay crosspiece 36 can deform as shown by the shape 36 ’. In this case, the struts are deformed, as illustrated in particular by the shape 30 ′ illustrated of the first strut 30. It should be noted that curved struts, not extending in a transverse plane of the tubular portion, are more easily deformable. It can also be noted that because the concavities of the struts are opposite, so as to form a "V" when viewed from above, these deformations of the struts 30, 38, 46, 52 are not hampered, in particular that the struts 30, 38, 46, 52, do not come into contact with each other. This makes it possible to optimize the amount of energy absorbed by the struts 30, 38, 46, 52 which deform and thereby limit the deformation of the dashboard cross member 10.
    The fact that the first ends of the struts, connected to the tubular portion of the dashboard cross member, are in the same respective transverse planes, allows the dashboard cross member 10 to better resist sinking. The deformation of the dashboard 10 is illustrated by the shape 18 ′ taken by the tubular portion 18. This remains limited despite the relatively large deformations of the lower bay cross member.
    Still with the aim of limiting the deformations of the dashboard cross member 10, it is advantageous for the pairs of struts to be distributed, in particular to be equally distributed over the length of the tubular portion. An effect is thus better distributed over the length of the tubular portion 18.
    FIG. 8 illustrates a variant of FIGS. 3 to 7, in which the struts 30, 38, 46, 52 are adapted to be fixed to a housing 58 of an air conditioning unit 60. Such an air conditioning unit is, from manner known per se, suitable for cooling and / or heating the air sent to the passenger compartment of the motor vehicle. Here, to do this, between their first and second ends, the struts 30, 38, 46, 52 have holes 62 allowing them to be screwed onto the housing 58 of the air conditioning unit 60. Such an assembly makes it possible to stiffen the legs of force, which contributes to better vibroacoustic performances of the assembly.
    Of course, the fixing of the struts on the housing of the air conditioning unit can be carried out using any other fixing means accessible to those skilled in the art.
    In FIG. 9, the struts 30, 38, 46, 52 are integrated in the housing 58 of the air conditioning unit 60. In other words, the housing 58 of the air conditioning unit 60 forms the struts 30, 38 , 46, 52. In this case in particular, the struts 30, 38, 46, 52 may not be in one piece with the tubular portion 18 of the dashboard crossmember 10. In other words, the struts 30, 38, 46, 52 may not have come integrally with the tubular portion 18, but on the contrary, be produced separately from the tubular portion 18 and then fixed thereto in a second step.
    FIG. 10 illustrates a second example 100 of the dashboard cross member which differs from the first example 10 only by the absence of the fourth strut 52.
    FIG. 11 finally illustrates a third example 200 of the dashboard cross member which differs from the first example 10 only by the absence of the strut 46 called the third strut in the context of the description of the first example.
    The invention is not limited to only the exemplary embodiments described above, but is on the contrary susceptible of numerous variants accessible to those skilled in the art.
    In particular, the different variants indicated above, when they are compatible, can be combined.
    In addition, the tubular portion 18 is in one piece in the examples described. However, this tubular portion 18 can be produced in pieces. These pieces can be made of the same material or, on the contrary, of different materials.
    The examples shown all show that the steering column support is on the left for a left-hand drive vehicle. However, as a variant, this support for the steering column can also be on the right for a vehicle with right-hand steering.
    Furthermore, the attachment of the struts to the body can be carried out using any suitable means accessible to those skilled in the art. In particular, the struts can be fixed to the body by welding, screwing, riveting.
    Likewise, the struts may have come in one piece with the tubular portion of the dashboard cross member. Alternatively, these struts are attached to the tubular portion. In this case, these struts can be welded, glued, screwed or riveted on the tubular portion. Any other fixing means accessible to those skilled in the art can also be used.
    权利要求:
    Claims (11)
    [1" id="c-fr-0001]
    1. Dashboard cross member (10; 100; 200) for vehicle (14) comprising a tubular portion (18) extending in a longitudinal direction (X) between a first end (20), intended to be placed on the side of a driver of the vehicle, and a second end (22), intended to be placed on the side of a passenger of the vehicle, the crossmember (10; 100; 200) comprising:
    - a first strut (30) extending between a first end (32) of the first strut (30), connected to the tubular portion (18), and a second end (34) of the first strut force (30), intended to be fixed to a lower bay crosspiece (36) of the body (16) of the vehicle (14), and
    - a second strut (38) extending between a first end (40) of the second strut (38), connected to the tubular portion (18), and a second end (42) of the second strut force (38), intended to be fixed to an apron (44) of the body (16) of the vehicle (14), the first ends (32; 40) of the first and second struts (30; 38) being located in the same transverse plane (PI) of the tubular portion (18).
    [2" id="c-fr-0002]
    2. Dashboard cross member according to claim 1, comprising a third strut (46), extending between a first end (48) of the third strut (46), connected to the tubular portion (18) , and a second end (50) of the third strut (46), intended to be fixed to the lower bay crosspiece (36) of the body (16) of the vehicle (14).
    [3" id="c-fr-0003]
    3. Dashboard cross member according to claim 1 or 2, comprising another strut (52), extending between a first end (54) of said other strut (52) connected to the tubular portion (18). ), and a second end (56) of said other strut (52) intended to be fixed to the bulkhead (44) of the body (16) of the vehicle (14).
    [4" id="c-fr-0004]
    4. Dashboard cross member according to claims 2 and 3, the first ends (48; 54) of the third strut (46) and the other strut (52) being located in the same plane (P2 ) transverse of the tubular portion (18).
    [5" id="c-fr-0005]
    5. Dashboard cross member according to any one of the preceding claims, being devoid of any strut intended to be fixed on a floor of the body (16) of the vehicle (14).
    [6" id="c-fr-0006]
    6. Dashboard cross member according to any one of the preceding claims wherein the first ends (32; 40) of the first and second struts (30; 38) are located at a distance from the first end (20) of the portion tubular (18) between a quarter and a half of the length of the tubular portion (18).
    [7" id="c-fr-0007]
    7. Dashboard cross member according to any one of the preceding claims in combination with at least one of claims 2 to 4, wherein the first end (48) of the third strut (46) and / or the first end (54 ) of said other strut (50) is located at a distance from the first end (20) of the tubular portion (18) between half and three-quarters of the length of the tubular portion (18).
    [8" id="c-fr-0008]
    8. Dashboard cross member according to any one of the preceding claims wherein at least one, preferably all, from the first strut (30), the second strut (38), the third strut (46) and said other strut (52) is adapted to be fixed between their first (32; 40; 48; 54) and second (34; 42; 50; 56) ends on a ventilation block (60) of the vehicle (16 ).
    [9" id="c-fr-0009]
    9. Dashboard assembly for a vehicle, comprising a dashboard (12), a dashboard crosspiece (10; 100; 200) according to any one of the preceding claims, the dashboard (12) being fixed. to the dashboard crossmember (10; 100; 200).
    [10" id="c-fr-0010]
    10. Dashboard assembly according to claim 9, further comprising an air conditioning unit (60) in a housing (58), in which:
    - At least one, preferably all, among the first strut (30), the second strut (38), the third strut (46) and said other strut (52) are fixed, between their first (32; 40; 48; 54) and second (34;
    5 42; 50; 56) ends, on the housing (58) of the ventilation unit (60); and / or in which
    the housing (58) of the ventilation unit (60) forms at least one, preferably all, from the first strut (30), the second strut (38), the third strut (46) and said other strut (52).
    [11" id="c-fr-0011]
    11. Vehicle (14) comprising a body (16) with an apron (44) and a lower bay cross member (36), a body delimiting a passenger compartment for occupants of the vehicle, and a dashboard assembly according to claim 9 or 10, such that the dashboard crossmember (10; 100; 200) is fixed to the bulkhead (44) and the lower bay crossmember (36) of the body (16) of the vehicle (14).
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    同族专利:
    公开号 | 公开日
    US10967916B2|2021-04-06|
    DE102018117951A1|2020-01-16|
    US20190031247A1|2019-01-31|
    FR3069517B1|2019-08-23|
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    法律状态:
    2019-02-01| PLSC| Search report ready|Effective date: 20190201 |
    2019-06-21| PLFP| Fee payment|Year of fee payment: 3 |
    2020-06-23| PLFP| Fee payment|Year of fee payment: 4 |
    2021-06-23| PLFP| Fee payment|Year of fee payment: 5 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1757115A|FR3069517B1|2017-07-26|2017-07-26|FORCE FRONT END BOARD TRAILER FOR AUTOMOTIVE VEHICLE|
    FR1757115|2017-07-26|FR1757115A| FR3069517B1|2017-07-26|2017-07-26|FORCE FRONT END BOARD TRAILER FOR AUTOMOTIVE VEHICLE|
    US16/044,277| US10967916B2|2017-07-26|2018-07-24|Cross-vehicle beam with hidden brace for motor vehicle|
    DE102018117951.0A| DE102018117951A1|2017-07-26|2018-07-25|Vehicle cross member with hidden strut for a motor vehicle|
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