• 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 a floor (8) of a motor vehicle comprising: a central tunnel (12); a main wall (10) extending transversely from the central tunnel (12) to a vehicle spar; and a reinforcing wall (14) disposed on the main wall (10), said wall (14) forming at least one transversely extending reinforcing cavity (16; 16 ') (16a; 16'a); the or at least one of the reinforcing cavities (16; 16 ') extends longitudinally (16b, 16c, 16'b, 16'c) along the central tunnel (12) and / or the spar; The reinforcing wall (14) is made of composite or hybrid metal / composite material, and serves to support a seat, preferably before, the vehicle (2). The invention also relates to a vehicle comprising such a floor (8).
    公开号:FR3022520A1
    申请号:FR1455714
    申请日:2014-06-20
    公开日:2015-12-25
    发明作者:Denis Noulleau；Catherine Tual
    申请人:Peugeot Citroen Automobiles SA；
    IPC主号:
    专利说明:

    [0001] The invention relates to the field of motor vehicles, more particularly to the problem of front and side impact absorption of a motor vehicle. More particularly, the invention relates to a vehicle floor structure. The realization of a vehicle floor structure generally varies according to the shape given to the floor of the vehicle. Vehicles with limited ground clearance and an engine block at the front of the vehicle usually have a floor forming a tunnel so as to create a passage for including an exhaust pipe from the front to the rear of the vehicle. A floor structure, located at the level of the driver and the passengers, generally joins the tunnel with the longitudinal side members of rocker panels; it is made to absorb the deformation energy received in case of shock of the vehicle. The floor structure is conventionally the place of attachment of the vehicle seats. The realization of a vehicle structure must meet many benefits including shock tests. Among these tests there are side impact tests, including the test against a pole. FIG. 1 illustrates an example of the conditions of a lateral impact test of a motor vehicle 2 against a fixed post. During such a test, the vehicle 2 is mounted on a platform 4 launched in a direction perpendicular to the longitudinal axis or 75 degrees of the vehicle 2, so that the vehicle laterally hits a pole 6, at the driver. The transverse deformation of the cabin causing significant risks of injury, particularly in the chest or abdomen, the test aims to give a notation in relation to the amplitude of this deformation. However, new standards are becoming more stringent and demanding, with speed positioning parameters, impact points and impact orientation varying. In addition, manufacturers face stricter regulations in terms of consumption, in particular CO2, which pushes them to build vehicle structures, including floors, lighter.
    [0002] 3022520 2 It is therefore desirable to reduce the transverse deformation during a side impact for better safety of the driver and passengers, and in particular in the context of a lightening of the vehicle. The shock energy must be absorbed by the vehicle structure.
    [0003] It is known, for reducing the transverse deformation amplitude of a vehicle comprising a tunnel-shaped floor, to reinforce it for example with liners conforming to the interior of the tunnel. This reinforcement substantially impacts the mass of the vehicle. The published patent document US 6,666,501 B1 discloses a light structure of a motor vehicle floor comprising a central tunnel, the floor being made of two stamped sheets, for example aluminum, which are superimposed and which after assembly form in particular reinforcing cavities transverse. This teaching is interesting in that the floor thus produced is light, the realization of the reinforcements is however not applicable to reduce lateral deformation especially at the tunnel. The invention aims to improve the safety of the driver and passengers during a side impact, particularly in the context of standards. More particularly, the object of the invention is to propose a solution for stiffening the structure of a vehicle floor comprising a tunnel shape, in order to reduce the amplitude of transverse deformation during a lateral impact. It also aims to reduce the mass of the vehicle. The invention relates to a motor vehicle floor comprising: a central tunnel; a main wall extending transversely from the central tunnel to a vehicle spar; and a reinforcing wall disposed on the main wall, said reinforcing wall forming at least one transversely extending reinforcing cavity; remarkable in that the or at least one of the reinforcing cavities also extends longitudinally along the central tunnel and / or the spar. According to an advantageous embodiment of the invention, the reinforcing cavity or cavities extending longitudinally along the central tunnel may extend over more than 20% of the length of the tunnel, preferably more than 40%, even more preferentially. more than 60%.
    [0004] The floor may comprise two main walls extending on either side of the central tunnel and two reinforcement walls disposed on the two main walls, respectively. According to an advantageous embodiment of the invention, the main walls and the central tunnel 5 form a single wall. According to an advantageous embodiment of the invention, the reinforcing wall or walls are fixed at the top of the central tunnel. According to an advantageous embodiment of the invention, the reinforcing wall comprises two reinforcing cavities extending transversely parallel to each other and longitudinally along the central tunnel and / or the spar. According to an advantageous embodiment of the invention, the or each of the reinforcing cavities has in the middle plane of the floor a U-shaped profile, the legs of the U being formed by the portions extending longitudinally along the central tunnel and / or spar.
    [0005] According to an advantageous embodiment of the invention, the U-shaped profiles of the two cavities of the reinforcement wall are such that their openings are opposite. According to an advantageous embodiment of the invention, the opening of the U-shaped profile of one of the two reinforcing wall reinforcing cavities corresponds to the location of the feet of a passenger of the vehicle.
    [0006] According to an advantageous embodiment of the invention, the floor comprises a cross-member between the reinforcing wall and the main wall, said cross-piece extending transversely at the height of the legs of the U-shaped profile of the or one of the reinforcement cavities. the reinforcement wall. Advantageously, the cross member is fixed directly to the reinforcing wall and / or to the main wall. Advantageously, the cross member is a profile whose section has a generally closed contour. This section can be triangular and include one or more reinforcements. According to an advantageous embodiment of the invention, the floor comprises a cross member under the main wall, said wall forming at least one reinforcing cavity extending transversely and in a complementary manner with a corresponding transverse reinforcement cavity of the cross member. Advantageously, the reinforcing wall 3022520 4 is fixed to the main wall at the transverse reinforcement cavity of said wall. According to an advantageous embodiment of the invention, the reinforcement cavity of the main wall extends transversely to the height of the legs of the U-shaped profile of the or one of the reinforcing wall reinforcing cavities. According to an advantageous embodiment of the invention, the portion of the reinforcing wall corresponding to at least one of the reinforcing cavities serves to support a seat, preferably before, the vehicle. The main walls and / or reinforcement may be steel less than 10 mm thick, preferably 1.5 mm, or aluminum. Advantageously, these walls are made of composite material or hybrid metal / composite material. The use of composite material reduces the number of parts to achieve all the cavities. In addition, it allows a better distribution and distribution of efforts, especially when the number of parts is reduced.
    [0007] According to an advantageous embodiment of the invention, the central tunnel and the main and reinforcement walls are fixed to each other by welding or gluing or by means of fastening means of the screw or rivet type. According to an advantageous embodiment of the invention, the reinforcing wall covers less than 95% of the surface of the main wall, preferably less than 70%, even more preferably less than 50%. The invention also relates to a motor vehicle comprising a floor, remarkable in that the floor is in accordance with the invention. The measurements of the invention are interesting in that the floor thus produced provides a gain in mass and it reduces the transverse deformation of the floor in the event of lateral impact, the deformation being notably reduced at the level of the central tunnel. Indeed, the reinforcing wall of the floor comprises transverse cavities which extend longitudinally on the sidewalls of the tunnel, these extensions providing an inertial modulus capable of absorbing lateral impact energy and to reduce flexural or longitudinal deformation. tunnel shear. In addition, the longitudinal extensions of the sill cavities or the additional sleepers may transmit or absorb shifted side impact energy. Other features and advantages of the present invention will be better understood from the description and drawings in which: FIG. 1 illustrates a side impact example of a vehicle against a pole; - Figure 2 is a perspective view of a vehicle floor according to the invention and in a preferred embodiment; FIG. 3 is a simplified cross-sectional view III-III of the floor of FIG. 2 at the U-shaped reinforcing wall towards the rear of the vehicle; - Figure 4 is a simplified cross-sectional view IV - IV of the floor of Figure 2 at the tunnel and the reinforcing wall forming a U forwardly; - Figure 5 is a simplified longitudinal sectional view V - V of the floor of Figure 2 in a first alternative embodiment; - Figure 6 is a simplified longitudinal sectional view V - V of the floor of Figure 2 in a second alternative embodiment; Figure 1 has already been described previously in the context of the discussion of the prior art. The motor vehicle in question comprises a floor according to the invention. Figure 2 is a perspective view of the floor 8 of a motor vehicle according to the invention; the floor 8 is intended to be mounted to two longitudinal longitudinal members (not shown). The floor 8 comprises a main wall 10 forming a central tunnel 12 and a reinforcing wall 14 disposed on the main wall 10. The reinforcing wall 14 may cover less than 95% of the surface of the main wall 10, preferably less than 70%, even more preferably less than 50%. The main wall 10 can be made in several pieces or in a single piece. In its multi-piece embodiment (not shown), a central tunnel 12 is assembled with two main walls 10, 3022 each of which extend transversely from the central tunnel 12, and on either side of the central tunnel 12. tunnel 12 to a vehicle spar; two reinforcing walls 14 are then arranged on the two main walls, respectively. In the case where the main wall is made in a single piece, the reinforcing wall 14 can be made in a single piece covering the main wall 10; in a particular embodiment, it is made in two pieces as illustrated in the image. The tunnel 12 has a concavity downward and extends in the longitudinal direction of the vehicle. The reinforcing wall 14 comprises at least one reinforcing cavity 16 extending transversely in a portion 16a and which is intended to absorb the energy of a lateral impact. In a particular embodiment, the main walls 10 and / or reinforcement 14 are made of hybrid metal / composite material so as to reduce the mass, they may be made of steel with a thickness of less than 2 mm, preferably 1.5 mm, a steel of such a small thickness that can be a steel with high elastic limit. At least one of the walls 10, 12 and 14 may be of aluminum or of composite material. The central tunnel 12 and the main walls 10 and reinforcement 14 are fixed to one another by welding or gluing, they can also be assembled by fastening means of the screw or rivet type. The reinforcing wall 14 may be fixed on its periphery to the main wall 10. However, a vehicle comprising a floor 8 with a tunnel shape 12 is particularly deformable; in fact, the faces of the tunnel oriented mainly in a vertical direction work mainly in shear and form a priority deformation zone of the floor during a side impact. Without other measures and because of this low rigidity of the tunnel such a floor is particularly deformable. In order to overcome this weakness and in the context of the invention, the or at least one of the reinforcing cavities 16 which extends transversely in the portion 16a also extends longitudinally in a portion 16b along the central tunnel 12, it (s) can / can extend over more than 20% of the length of the tunnel 12, preferably more than 40%, even more preferably more than 60%. The cavities 16 extending longitudinally along the tunnel in their portion 16b are able to absorb energy from a lateral impact, they also distribute the forces transmitted to the tunnel 12. At least one of the cavities 16 can extend in addition, at the spar in a portion 16c; this measurement is particularly interesting in case of offset of the point of impact of the lateral impact and / or its orientation.
    [0008] Figure 2 is a view of the floor according to the invention and in a preferred embodiment. In particular, each of the reinforcing walls 14 comprises two reinforcing cavities 16 and 16 'extending transversely parallel to one another and then extending longitudinally along the central tunnel and / or the spar. The or at least one of the cavities 16 and 16 ', in its portion 16a or 16'a or 16b or 16'b or 16c or 16'c may serve as a support for a seat of the vehicle. In this case, the reinforcing wall 14 forms, at the level of the cavities 16 and 16 ', a "raised podium" which serves as a support for a seat, preferably a front seat, of a vehicle; Fasteners 18 for a seat can be seen, they are located in the portions 16b and 16'b and 16c and 16'c extending longitudinally along the tunnel and along the spar cavities reinforcement 16 and 16 '. The, in this case at least one, or each of the reinforcing cavities 16 and 16 'has in the middle plane of the floor 8 a U-shaped profile, the legs of the U being formed by the portions 16b and 16c for the cavity reinforcement 16; and / or 16'b and 16'c for the reinforcement cavity 16 ', these portions being those extending longitudinally along the central tunnel and the spar. The U-shaped profiles of the two cavities 16 and 16 'of the reinforcing wall 14 are such that their openings are opposite. It can be seen on the left-hand side of the image that the opening of the U-shaped profile of a 16 'of the two reinforcing cavities of the reinforcing wall 14 can correspond to the location of the feet of a passenger of the 20 vehicle, in this case a passenger behind a front seat. In this preferred embodiment, the floor further comprises a crossmember 20 which extends transversely to the height of the legs 16'b and 16'c of the U-shaped profile of the or one of the reinforcing cavities of the wall reinforcement. Two alternatives of particular realization will be discussed below.
    [0009] The cavities 16b and 16'b of the reinforcement wall disposed on either side of the tunnel 12 are preferably symmetrical with respect to the plane passing through the axis of said tunnel 12 and perpendicular to the floor 8. FIG. simplified view in cross section III - III of the floor 8 at the reinforcing wall 14 forming a U towards the rear of the vehicle. The main wall 10, the reinforcing wall 14 and the cross member 20 can be seen; the reinforcing wall 14 is fixed to the top of the central tunnel 12 as well as to the lateral edge 22 of the main wall 10 intended to be fixed to the spar. Only one side of the vehicle is shown, however the embodiment is substantially symmetrical on the other side 3022 520 8 of the floor 8 relative to the central tunnel 12. There can be observed a first alternative embodiment where the crossbar 20 is fixed below the main wall 10 and is made continuously between the two side edges 22 of the main wall 10. In a second alternative embodiment, the cross member may be discontinuous and 5 housed between the main wall 10 and the reinforcing wall 14. This second alternative embodiment is shown in dotted line on the image. This measurement is interesting in that the cross member can use the space available between the reinforcing wall 14 and the main wall 10. For this second alternative, and as regards the mounting, the support wall 14 can be preassembled at the main wall 10 and 10 at the central tunnel 12, the assembly then being mounted on the vehicle body during manufacture. It is also possible to observe the portions 16'a, 16'b and 16'c of a reinforcing cavity 16 'of the reinforcing wall 14, more precisely the cavity extending longitudinally 16'b along the tunnel 12, and the cavity 16'c extending longitudinally along the edge 22 of the main wall 10 to be fixed to the spar. Figure 4 is a simplified cross-sectional view IV - IV of the floor 8 at the tunnel 12 and the reinforcing wall 14 forming a U forwardly. The main wall 10 can be seen with tunnel 12; it is also possible to see the reinforcing wall 14 with in the plane of section the portion 16b of the reinforcing cavity 16 extending longitudinally along the tunnel 12. It is also possible to see in the background the portion 16a of the cavity of FIG. reinforcement extending transversely. Figures 5 and 6 are two particular alternative embodiments of the floor 8 seen in simplified section V - V. Figure 5 is a simplified longitudinal sectional view V - V of the floor 8 in a first alternative embodiment. The floor comprises a crossbar 20 fixed under the main wall 10 and comprising one or more cavity (s) 22 transverse reinforcement. The tunnel 12 is seen in the background. The main wall 10 in this case forms a reinforcing cavity 24 extending transversely and in a manner complementary to the transverse reinforcing cavity 22 of the crossmember 20. The crossmember 20 is located at the legs of the U oriented towards the rear of the reinforcing wall 14 which can be seen in section the portions 16a and 16'a of the reinforcing cavities 16 and 16 'and in the background the portion 16'b of the reinforcement cavity 16 '. More precisely, the reinforcing cavity 24 of the main wall extends transversely at the height of these U-shaped legs; in particular and as shown in the image, the reinforcing wall 14 may be attached to the top of the reinforcing cavity 24 of the main wall 10. This measurement is interesting in that it completes the transverse rigidity of the floor. Figure 6 is a simplified longitudinal sectional view V - V of the floor 8 in a second alternative embodiment. The floor 8 comprises a crossmember 20 'between the reinforcing wall 14 and the main wall 10. The crossmember 20' can extend transversely at the height of the portions 16'b and 16'c of the U-shaped profile of the or 16 'of the reinforcing cavities of the reinforcing wall 14. This crossbar 20' may have a triangular profile so as to match the reinforcing wall 14; this measurement is interesting in that the cross is located at the location of the feet (not shown) of a rear passenger. The portions 16a and 16'a of the reinforcing cavities 16 and 16 'can be seen in section, and in the background the portion 16'b of the reinforcement cavity 16' of the reinforcement wall 14.
    权利要求:
    Claims (10)
    [0001]
    REVENDICATIONS1. Motor vehicle floor (8) comprising: - a central tunnel (12); a main wall (10) extending transversely from the central tunnel (12) to a vehicle spar (2); and - a reinforcing wall (14) disposed on the main wall (10), said wall (14) forming at least one transversely extending reinforcing cavity (16; 16 ') (16a; 16'a); characterized in that the or at least one of the reinforcing cavities (16; 16 ') extends longitudinally (16b, 16c, 16'b, 16'c) along the central tunnel (12) and / or the spar.
    [0002]
    2. Floor (8) according to claim 1, characterized in that the reinforcing wall (14) comprises two reinforcing cavities (16; 16 ') extending transversely parallel to one another and longitudinally along the central tunnel (12) and / or spar.
    [0003]
    3. Floor (8) according to one of claims 1 and 2, characterized in that the or each of the reinforcing cavities (16; 16 ') has in the middle plane of the floor (8) a U-shaped profile, the legs of the U being formed by the portions (16b, 16c, 16'b, 16'c) extending longitudinally along the central tunnel (12) and / or the spar.
    [0004]
    4. Floor (8) according to claims 2 and 3, characterized in that the U-shaped profiles of the two cavities (16; 16 ') of the reinforcing wall (14) are such that their openings are opposite.
    [0005]
    5. Floor (8) according to claim 4, characterized in that the opening of the U-shaped profile of one (16 ') of the two reinforcing cavities of the reinforcing wall (14) corresponds to the location of the feet of a passenger of the vehicle (2).
    [0006]
    6. Floor (8) according to one of claims 3 to 5, characterized in that it comprises a cross member (20 ') between the reinforcing wall (14) and the main wall (10), said cross member (20'). ) extending transversely at the height of the legs of the U-shaped profile of the or one (16 ') of the reinforcing cavities of the reinforcing wall (14). 3022520 11
    [0007]
    7. Floor (8) according to one of claims 3 to 6, characterized in that it comprises a cross member (20) under the main wall (10), said wall (10) forming at least one reinforcement cavity (24). ) extending transversely and in a complementary manner with a corresponding transverse reinforcement cavity (22) of the crossmember (20).
    [0008]
    8. Floor (8) according to claim 7, characterized in that the reinforcing cavity (24) of the main wall extends transversely to the height of the legs of the U-shaped profile or one (16 ') of the cavities reinforcement of the reinforcing wall (14). 10
    [0009]
    9. Floor (8) according to one of claims 1 to 8, characterized in that the or at least one (16; 16 ') of the reinforcing cavities serves to support a seat, preferably before, the vehicle (2) .
    [0010]
    10. Motor vehicle (2) comprising a floor (8) and characterized in that the floor (8) is according to one of claims 1 to 9.
    类似技术:
    公开号 | 公开日 | 专利标题
    FR2889828A1|2007-02-23|BUMPER FOR MOTOR VEHICLE
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    EP3532363A1|2019-09-04|Reinforcement of the front structure of a motor vehicle for frontal crash with reduced overlap
    FR3069517A1|2019-02-01|FORCE FRONT END BOARD TRAILER FOR AUTOMOTIVE VEHICLE
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    EP2855242B1|2016-03-16|Vehicle structure comprising wing support with controlled deformation in the event of an impact
    EP3177506B1|2018-09-12|Floor with crossmember comprising a compressively deformable portion
    EP3209537B1|2019-05-22|Side rail of vehicle rocker panel with stiffener and partitions
    EP2143620B1|2011-04-13|Strengthening device with cross member structure for a front seat area in the vehicle
    FR2987014A1|2013-08-23|VEHICLE SECURITY BELT FASTENING AND OR REINFORCING PART.
    FR3038573A1|2017-01-13|REAR STRUCTURE OF VEHICLE FOR URBAN SHOCK
    EP3114013B1|2018-04-18|Floor strengthener for motor vehicle
    FR2926280A1|2009-07-17|Elongated shaped side bracing element for motor vehicle, has front end portion deformable by compression along direction of longitudinal axis of element and arranged near front end of front block of vehicle
    FR3063706B1|2019-11-08|ATTACHMENT OF FRONT STRETCHERS ON BODY OF MOTOR VEHICLE
    EP3554924B1|2021-02-24|Rear structure of motor vehicle comprising a reinforcement for rear-end collisions
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    FR2926777A1|2009-07-31|STRUCTURE OF A MOTOR VEHICLE.
    FR3109357A1|2021-10-22|MOTOR VEHICLE WITH FRONT FOOT REINFORCEMENT FOR FRONTAL IMPACT WITH LOW COVER
    FR3086629A1|2020-04-03|HIGH-SPEED REAR SHOCK BATTERY REINFORCEMENT
    EP3787956A1|2021-03-10|Vehicle structure with reinforced side rail
    FR2983816A1|2013-06-14|Case for motor vehicle i.e. car, has upper and lower arms extended rearwardly of case from leg, where upper arm is fixed to upper part of frame in axis of upright of windscreen and lower arm is fixed to front foot
    FR2982814A1|2013-05-24|Impact resistance system for case of car, has reinforcement part including intermediate portion connecting between upper and lower portions, where intermediate portion is placed in face to face and at distance from hanger
    FR3056547A1|2018-03-30|FLOOR OF MOTOR VEHICLE WITH REINFORCEMENTS
    FR3010380A1|2015-03-13|FRONT DOOR ENTRY STRUCTURE OF A MOTOR VEHICLE
    同族专利:
    公开号 | 公开日
    FR3022520B1|2018-01-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP1921000A1|2006-11-10|2008-05-14|GM Global Technology Operations, Inc.|Front floor of a bodywork substructure|
    DE102009048335A1|2009-10-06|2011-04-07|GM Global Technology Operations, Inc., Detroit|Seat cross beam for fastening seat to body undersurface of motor vehicle, has longitudinal profiles provided with ramp shaped connecting sections that are connected with transverse profile|
    DE102012102447A1|2012-03-22|2013-09-26|Dr. Ing. H.C. F. Porsche Aktiengesellschaft|Tunnel reinforcement and support structure|
    DE102012109464A1|2012-10-05|2014-05-15|Dr. Ing. H.C. F. Porsche Aktiengesellschaft|Motor vehicle seat beam modular structure, has seat beam arranged with component and connected with carrier that is connected with air conditioner pipeline, where air conditioner pipeline is formed with passage|CN107161220A|2016-03-07|2017-09-15|大众汽车有限公司|Floor panel structure for automobile body for vehicle|
    FR3056547A1|2016-09-26|2018-03-30|Peugeot Citroen Automobiles Sa|FLOOR OF MOTOR VEHICLE WITH REINFORCEMENTS|
    FR3075747A1|2017-12-27|2019-06-28|Compagnie Plastic Omnium|LOCAL TREATMENT ON MONO-SKIN FLOORS OF INPUTS AND DIFFUSIONS OF SIDE SHOCK EFFORT|
    US10946771B2|2018-07-13|2021-03-16|Ford Global Technologies, Llc|Motor vehicle floor|
    法律状态:
    2015-05-26| PLFP| Fee payment|Year of fee payment: 2 |
    2015-12-25| PLSC| Publication of the preliminary search report|Effective date: 20151225 |
    2016-05-26| PLFP| Fee payment|Year of fee payment: 3 |
    2017-05-23| PLFP| Fee payment|Year of fee payment: 4 |
    2018-05-25| PLFP| Fee payment|Year of fee payment: 5 |
    2018-06-29| CD| Change of name or company name|Owner name: PEUGEOT CITROEN AUTOMOBILES SA, FR Effective date: 20180312 |
    2018-06-29| CA| Change of address|Effective date: 20180312 |
    2020-05-20| PLFP| Fee payment|Year of fee payment: 7 |
    2021-05-19| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1455714A|FR3022520B1|2014-06-20|2014-06-20|FLOOR OF MOTOR VEHICLE WITH PODIUM OF COMPOSITE REINFORCEMENT|
    FR1455714|2014-06-20|FR1455714A| FR3022520B1|2014-06-20|2014-06-20|FLOOR OF MOTOR VEHICLE WITH PODIUM OF COMPOSITE REINFORCEMENT|
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