• 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 object of the invention is to absorb a side impact load transmitted from a side spar to protect a battery. For this, the invention provides first sleepers (3) and a battery (4) respectively disposed above and below a floor panel (2). The floor panel includes a battery storage portion (21) bulging upwardly. The floorboard is joined to side rails (1) via external flat portions (22). The first cross member includes an upper member (31) and a lower member (32) separated. An outer end portion (32a) is joined to the side spar, and a lower flange portion is joined to the outer planar portion. The outer end portion is joined to an upper portion of the lower member outwardly in the width direction of the vehicle from an upstanding wall portion (21B).
    公开号:FR3069224A1
    申请号:FR1856799
    申请日:2018-07-23
    公开日:2019-01-25
    发明作者:Yusuke Takasago；Nobuhiko Hattori
    申请人:Suzuki Motor Co Ltd；
    IPC主号:
    专利说明:

    LOWER VEHICLE STRUCTURE
    The present invention relates to a lower vehicle structure.
    Vehicles, such as electric vehicles and hybrid vehicles, are equipped with batteries which are much larger than conventional types of batteries. This larger battery is installed on a lower side of the vehicle, for example, below a vehicle body floor, for convenience of arrangement. In order to protect batteries, it is necessary to take shock absorption measures against side impact in electric vehicles, hybrid vehicles, etc.
    Accordingly, among conventional vehicles, there is a vehicle having a structure in which the opposite ends of a cross member which has an inverted U shape in a sectional view and extends in the direction of the width of the vehicle are respectively in contact with, and joined to, side rails which extend in the front and rear directions of the vehicle on opposite sides in the width direction of the vehicle, a load transmission plate is arranged in the cross member, and constitutes a closed section structure (gross structure), thus protecting the battery from an impact charge in the event of a lateral impact (for example, see Patent literature 1).
    [Patent literature 1] JP 4 858 183B2
    However, according to the conventional lower vehicle structure described above, the impact load of the side rails caused in the event of a side impact is simultaneously transmitted to both the upper and lower sides of the cross member. Consequently, a sufficient load distribution cannot be achieved. It is possible that an unexpected break could occur in the sleeper. Consequently, the absorption of the impact load of the gross structure in the event of a side impact remains to be improved, and the structure is insufficient in terms of battery protection.
    The present invention has been made in view of such effective circumstances, and the object of the present invention is to provide a lower structure of the vehicle which, first of all, absorbs an impact load transmitted from the side rails in the case of a lateral impact by a lower side of a cross member and then distributes the load on an upper side of the cross member and a floor panel, thus making it possible to protect a battery from the impact charge in the event of a lateral impact.
    To solve the problems in conventional techniques, a lower vehicle structure according to the present invention includes: right and left side rails which are arranged on opposite sides in a direction of the width of the vehicle and extend in a forward direction and rear of vehicle; a floor panel disposed between the left and right side rails; sleepers which are arranged above the floor panel in a vehicle and extend across the width of the vehicle; and a battery disposed below the floor panel in the vehicle, the floor panel including an upwardly bulging battery storage portion in the vehicle, the battery storage portion including: a central planar portion disposed at the opposite of an upper surface of the battery; and upright wall portions disposed closer to exteriors in the vehicle than side surfaces of the battery, the floor panel being joined to the side rails via external planar portions extending from lower ends of the upright wall portions toward exteriors in the width direction of the vehicle, characterized in that the cross members each include an upper member and a lower member which are separated from each other, concerning the lower member, an outer end portion is joined to the side member, and a lower end portion is joined to the outer planar portion, and relating to the upper member, the outer end portion is disposed inwardly in the direction of the width of the vehicle from the portion outer end of the lower member, is joined to an upper portion of the lower member in a positi outward in the direction of the width of the vehicle from the upright wall portion, and is joined to the central flat portion in an inward position from the upright wall portion in the width direction of the vehicle.
    As described above, the lower vehicle structure according to the present invention includes: right and left side rails which are disposed on opposite sides in a direction of vehicle width and extend in a front and rear direction of vehicle ; a floor panel disposed between the left and right side rails; sleepers which are arranged above the floor panel in a vehicle and extend across the width of the vehicle; and a battery disposed below the floor panel in the vehicle, the floor panel including an upwardly bulging battery storage portion in the vehicle, the battery storage portion including: a central planar portion disposed at the opposite of an upper surface of the battery; and upright wall portions disposed closer to exteriors in the vehicle than side surfaces of the battery, the floor panel being joined to the side rails via external planar portions extending from lower ends of the upright wall portions toward exteriors in the width direction of the vehicle, characterized in that the cross members each include an upper member and a lower member which are separated from each other, concerning the lower member, an outer end portion is joined to the side member, a lower end portion is joined to the outer planar portion, and concerning the upper member, the outer end portion is disposed inwardly in the direction of the width of the vehicle from the portion d external end of the lower member is joined to an upper portion of the lower member in a position outward in the direction of the width of the vehicle from the upright wall portion, and is joined to the central flat portion in an inward position from the portion of the upright wall in the width direction of the vehicle.
    Consequently, according to the lower vehicle structure of the present invention, first of all, the impact load applied from the lateral spar in the case of a lateral impact is absorbed by a lower portion of the cross-member, and then, is smoothly distributed over the top member of the cross member, the floor panel and the like. As a result, the battery disposed in the battery storage portion can be effectively protected from impact charging in the case of side impact.
    Figure 1 is a plan view, viewed from above of a vehicle, showing an overview of side rails, a floor panel, sleepers and the like to which a lower vehicle structure is applied according to a first embodiment of the present invention.
    Figure 2 is a plan view, viewed from above the vehicle, showing an overview of a battery and the like to which the lower vehicle structure is applied according to the first embodiment of the present invention, in a state where a panel of floor is removed.
    Figure 3 is a sectional view taken along line A-A of Figure 1.
    Figure 4 is a sectional view taken along line B-B of Figure 1.
    Figure 5 is a perspective view showing a section around the line A-A of Figure 1, viewed obliquely above the front of the vehicle.
    Figure 6 is a perspective view showing an upper member and a lower member which constitute a first cross member among the cross members of Figure 1 in a state before joining.
    Figure 7 is a perspective sectional view taken in the front and rear directions of the vehicle in a state where the upper member and the lower member which constitute the first cross member in Figure 6 are joined to each other .
    Figure 8 is a sectional view showing the upper member and the lower member in Figure 7.
    FIG. 9 shows a second cross member and the like to which a lower vehicle structure is applied according to a second embodiment of the present invention, and is a sectional view taken along line C-C of FIG. 1.
    FIG. 10 shows the second cross member and the like to which the lower vehicle structure is applied according to the second embodiment of the present invention, and is a sectional view taken along line D-D of FIG. 1.
    The present invention is described in detail below based on the embodiments shown in the diagram.
    In the diagrams, a direction of arrow Lr indicates the front of a vehicle, a direction of arrow O indicates the outside of the vehicle, and a direction of arrow U indicates an upward direction of the vehicle. In addition, a direction of the arrow X indicates the direction of the vehicle width, and a direction of the arrow Y indicates the front and rear directions of the vehicle.
    Figures 1 to 8 show a lower vehicle structure according to a first embodiment of the present invention. As shown in Figures 1 to 8, the lower vehicle structure according to the first embodiment of the present invention mainly includes: right and left side rails 1 which are arranged on opposite sides in the direction of the width of the vehicle and extend in the front and rear directions of the vehicle; a floor panel 2 which is disposed between the right and left side rails 1 and extends in the direction of the width of the vehicle and the front and rear directions of the vehicle; first sleepers (corresponding to a sleeper) 3 which are arranged above the floor panel 2 in the vehicle and extend in the direction of the width of the vehicle; and a battery 4 disposed below the floor panel 2 in the vehicle. As shown in Figures 3 and 4, the side spar 1 is formed to have a closed section shape by joining upper and lower ends 11a and 11b of an internal side spar panel 11 which is arranged longitudinally and has a section hat-shaped at respective upper and lower ends 12a and 12b of an outer side member panel 12 overlapping.
    As shown in FIGS. 3 to 5, the floor panel 2 of this embodiment includes a battery storage portion 21 which bulges upwards in the vehicle to have a size capable of storing an upper portion of the battery 4. The battery storage portion 21 includes a substantially horizontal central flat portion 21A arranged to face an upper surface 4a of the stored battery 4, and upright wall portions 21B which are arranged outward from side surfaces 4b of the battery 4 in the vehicle and are gradually inclined downward from both the right and left sides of the central flat portion 21A. The floor panel 2 includes external planar portions 22 extending from the lower ends of the upright wall portions 21B outwardly in the direction of the width of the vehicle, and are joined to the respective internal side member panels 11 of the side member lateral 1 via the external flat portion 22.
    In addition, in the floor panel 2, a floor tunnel 23 bending further upward into the vehicle is formed to extend in the front and rear directions of the vehicle at a central portion of the central planar portion 21A of the battery storage portion 21. A floor tunnel reinforcement 24 to reinforce the floor tunnel 23 is formed below the floor tunnel 23. The battery 4 is fixed and held under the floor panel 2, by battery fixing supports 41 and battery suspension supports 42 which are attached to the floor panel 2, in a storage state in the battery storage portion 21.
    As shown in Figures 1 to 8, first crosspieces 3 in this embodiment are arranged on both the right and left sides with the floor tunnel 23 interposed between them, in the same position at an intermediate portion of the battery storage portion 21 in a front and rear direction of the vehicle. Internal vehicle ends of the first crosspieces 3 are joined to the floor tunnel reinforcement 24 via the floor panel 2. The floor tunnel reinforcement 24 acts as a load distribution member. Consequently, at the time of a local collision, such as a collision against a pole, an impact load is distributed through the floor tunnel reinforcement 24 to a site opposite in the opposite direction to a site receiving the load impact.
    The first cross member 3 includes an upper member 31 and a lower member 32 which are separated from each other. Regarding the lower member 32, an outer end portion 32a is joined to the inner side member panel 11 of the side member 1, and a lower flange portion 32b is joined to the outer planar portion 22. Regarding the upper member 31 , an outer end portion 31a is disposed inwardly in the direction of the width of the vehicle from the outer end portion 32a of the lower member 32, is joined to an upper portion of the lower member 32 in an outward position in the width direction of the vehicle from the upright wall portion 21B, and is stacked in the vertical direction of the vehicle. In addition, concerning the upper member 31, a lower flange portion 3 lb is joined to the central flat portion 21A in an inward position in the direction of the width of the vehicle from the upright wall portion 21B, and a internal end portion 31c is joined to the floor tunnel reinforcement 24 via the floor panel 2. Note that the lower flange portion 31b of the upper member 31 in this embodiment is also joined to the wall portion upright 21B.
    Consequently, as shown in FIGS. 5 to 8, the upper member 31 and the lower member 32 are formed by upper surfaces 31A and 32A arranged in a substantially horizontal direction, and lateral surfaces 31B and 32B which extend towards the bottom from distal and proximal portions of the upper surfaces 31A and 32A and arranged to face each other, and has a U-shaped cross section whose opening is arranged downward. The upper member 31 is configured by overlapping a portion of the lower portion of the lateral surface 3IB near the outside in the direction of the width of the vehicle on the upper portion of the lateral surface 32B of the lower member 32 from the above, and by joining the portions to each other by welding or the like, thus making it possible to stack the upper member 31 on the lower member 32. Consequently, concerning the upper member 31, the flange portion lower 31b is not provided for the part of the lower portion of the lateral surface 31B near the outside in the direction of the width of the vehicle. Note that the lower flange portions 3 lb and 32b of the upper member 31 and the lower member 32 are formed by being curved at the lower ends of the lateral surfaces 31B and 32B, which face each other, in the front directions and rear of the vehicle at a substantially right angle.
    As shown in Figures 7 and 8, the lower member 32 in this embodiment is in the state of junction with the outer planar portion 22 of the floor panel 2, and forms a closed section S closed by four sides, together with the outer planar portion 22. In addition, an interface which partitions the upper member 31 and the lower member 32 relative to one another consists of an upper surface 32A which forms the closed section S of the lower member 32. The lower member 32 is configured to have a lower rigidity in the direction of the width of the vehicle than that of the upper member 31. Consequently, the lower member 32 of the first cross member 3 is configured to so as not to cause buckling, which is a simple bending, such as bending in two, in the middle, but to cause an accordion bending (multiple bends) by an impact load transmitted from the side member ral 1 to the lower member 32 in the event of a side impact, and to act as an impact absorber member.
    Means for reducing the rigidity of the lower member 32 in the direction of the width of the vehicle may be means for forming fragile portions in the lower member 32, for forming the lower member 32 so that it has a thickness of sheet metal smaller than the upper member 31, or to form the lower member 32 using a material having a rigidity less than that of the upper member 31. In such means, the fragile portions can be consist of ribs 33 and 34 formed on the upper member 31 and the lower member 32 (or only on the upper member 31 or only on the lower member 32) as shown in FIG. 6. These ribs 33 and 34 are continuously formed on the upper surfaces 31A and 31B and the lateral surfaces 31B and 32B of the upper member 31 and the lower member 32 in the direction orthogonal to a direction of lateral impact entry, and are respectively arranged to be at the same positions in the direction of the width of the vehicle. On the upper surfaces 31A and 32A of the upper member 31 and the lower member 32, multiple ribs 35 and 36 are formed by fixing a gap in the direction of the width of the vehicle. In addition, at least one of the ribs 34 and 36 of the lower member 32 is arranged towards the outside in the direction of the width of the vehicle from the outer end portions 31a of the upper member 31.
    According to this structure, the lower member 32 of the first cross member 3 receiving an impact load in the case of a lateral impact causes a simple bending in the middle, preventing the absorption capacity of the impact load from being reduced significantly, and improving the absorption capacity of the impact load by bending in the manner of an accordion.
    In addition, as shown in FIGS. 3 and 4, the upper surface 32A of the lower member 32 in this embodiment is disposed at an overlapping height of the internal side spar panel 11 constituting the side spar 1 in a view of side of the vehicle. Consequently, a structure is produced which can receive the impact load from the lateral spar 1 applied in the case of a lateral impact by the entirety of the lower member 32 of the first cross member 3, and which absorbs effectively impact load.
    In addition, the internal end portion 32c of the lower member 32 is disposed spaced a predetermined distance L from the upright wall portion 21B of the battery storage portion 21 of the floor panel 2. Namely, the inner end portion 32c of the lower member 32 is disposed outwards from the upright wall portion 21B of the battery storage portion 21 in the vehicle. Consequently, even if the lower member 32 of the first cross member 3 which has a role of absorbing an impact load in the case of a lateral impact is displaced in the internal direction of the vehicle due to a lateral impact, a collision of the lower member 32 with the battery 4 is prevented in the battery storage portion 21, and the impact load is distributed over the upper portion of the first cross member 3.
    As shown in FIGS. 3 to 5, the upper member 31 in this embodiment is joined to the right and left battery fixing supports 41 via the floor panel 2. The battery fixing supports 41 are members having a high rigidity, and are securely fixed to the floor panel 2. Consequently, when the first cross member 3 receives an impact load in the event of a lateral impact, the displacement of the upper member 31 in the internal direction of the vehicle is removed, and a structure is made, which can prevent a situation in which the first cross member 3 collides with the battery 4 in the battery storage portion 21.
    As shown in Figures 1 to 5, 7 and 8, the right and left pair of an interior seat support 5 and an exterior seat support 6 with a fixed interval in the width direction of the vehicle is attached to the upper portion of the upper member 31. This is due to the fact that the upper member 31 has a high rigidity, and no problem arises even if a structure is adopted where the inner seat support 5 and the seat support exterior 6 used to attach a seat, not shown, are provided for the upper member 31.
    According to a battery protection structure in this embodiment, as shown in Figures 1 to 5, the side members 7 which have a high rigidity and extend in the front and rear directions of the vehicle are arranged on both right and left sides of the vehicle. These lateral members 7 are arranged between the battery storage portion 21 and the lateral longitudinal members 1 in the direction of the width of the vehicle, and are joined to the lower portions of the lower members 32 of the first cross members 3 via the floor panel 2.
    As described above, the lower vehicle structure according to the first embodiment of the present invention includes: the right and left side rails 1 which are arranged on opposite sides in the direction of the width of the vehicle and extend in the front and rear directions of the vehicle; the floor panel 2 disposed between the right and left side rails 1; the first sleepers 3 which are arranged above the floor panel 2 in the vehicle and extend in the direction of the width of the vehicle; and the battery 4 disposed below the floor panel 2 in the vehicle. The floor panel 2 includes the battery storage portion 21 bulging upward in the vehicle. The battery storage portion 21 includes the central flat portion 21A arranged to face the upper surface 4a of the battery 4, and upright wall portions 21B disposed outside the side surfaces 4b of the battery 4. The panel floor 2 is joined to the side rails 1 via the outer planar portions 22 extending outwardly from the lower ends of the respective upright wall portions 21B in the direction of the width of the vehicle. The first cross member 3 includes the upper member 31 and the lower member 32, which are separated from each other. Regarding the lower member 32, the outer end portion 32a is joined to the side member 1, and the lower end portion 32b is joined to the outer planar portions 22. Regarding the upper member 31, the outer end portion 32a is arranged inwards in the direction of the width of the vehicle from the external end portion 32a of the lower member 32, is joined to the upper portion of the lower member 32 in the outward position in the direction of the width of the vehicle from the upright wall portion 21B, and is joined to the central planar portion 21A in the inward position from the upright wall portion 21B in the direction of the width of the vehicle.
    Consequently, according to the lower vehicle structure in this embodiment, first of all, the impact load applied from the lateral spar 1 in the case of a lateral impact is absorbed by the lower member 32 of the first cross 3; and then is distributed smoothly over the upper member 31 of the first cross member 3, the floor panel 2 and the like. Consequently, a collision of peripheral organs with the battery 4 in the battery storage portion 21 can be reduced, and the battery 4 can be effectively protected against impact charging in the event of a side impact.
    In the lower vehicle structure in the first embodiment, the lower member 32 of the first cross member 3 has the U-shaped section, and forms the closed section S together with the floor panel 2, and the lower member 32 is configured to have a lower rigidity in the width direction than that of the upper member 31 of the first cross member 3. In addition, the upper member 31 has the U-shaped section, and the interface which partitions the upper member 31 and the lower member 32 relative to each other consists of the upper surface 32A which forms the closed section S of the lower member.
    Consequently, according to the lower vehicle structure in this embodiment, the impact load transmitted from the lateral spar 1 to the lower member 32 of the first cross member 3 in the case of a lateral impact causes bending in accordion in the lower member 32, thereby absorbing the impact load.
    Consequently, the lower member 32 does not cause buckling which is a simple bending (bending in two) in the middle, and allows the lower member 32 to play the role of impact absorbing member. As a result, the protective effect of battery 4 against impact charging in the event of a side impact can be further improved.
    In the lower vehicle structure of the first embodiment, according to the means for accomplishing the configuration in which the lower member 32 has a lower rigidity in the direction of the width of the vehicle than that of the upper member 31 of the first cross member 3, the lower member 32 includes the fragile portions, such as ribs 34 and 36, or else the lower member 32 is formed to have a thickness of sheet metal smaller than the upper member 31.
    Consequently, according to the lower vehicle structure in this embodiment, the accordion bending of the first cross member 3 in the case of a side impact is facilitated, and the capacity for absorbing the impact load can be more improved. As a result, the protective effect of battery 4 against impact charging in the event of a side impact can be further improved.
    In addition, according to the lower structure of the vehicle in the first embodiment, the upper surface 32A of the lower member 32 of the first cross member 3 is disposed at a height overlapping the internal side spar panel 11 constituting the side spar 1 in a side view of the vehicle.
    Consequently, according to the lower vehicle structure in this embodiment, the impact load transmitted from the lateral spar 1 in the case of a lateral impact can be received by the whole of the lower member 32 of the first cross member 3. As a result, the impact load can be effectively absorbed, and the protective effect of the battery 4 against the impact load in the case of side impact can be further improved.
    According to the lower vehicle structure in this embodiment, the internal end portions 32c of the lower members 32 of the first crosspieces 3 are arranged away from the upright wall portions 21B of the battery storage portion 21. Consequently , a collision of the lower member 32 with the battery 4 can be avoided by a displacement of the lower member 32 inwards in the direction of the width of the vehicle due to a lateral impact, and the load of impact in the case of a lateral impact can be distributed smoothly over the upper member 31.
    In addition, according to the lower vehicle structure in this embodiment, the upper members 31 of the first crosspieces 3 are joined to the battery fixing support 41 via the floor panel 2. Consequently, the battery fixing support 41 having the high rigidity in the internal direction of the vehicle resides in the state of solid attachment to the upper member 31. A displacement of the upper member 31 can be prevented in the internal direction of the vehicle due to the impact load in in the case of a side impact, and a collision of the first cross 3 with the battery 4 can be prevented.
    Figures 1, 2, 9 and 10 show a lower vehicle structure according to a second embodiment of the present invention. Note that the same symbols are assigned to similar components described in the first embodiment above, and a redundant description is omitted.
    In the lower vehicle structure according to the second embodiment, as shown in FIGS. 1, 2, 9 and 10, second sleepers 8 are formed closer to the front than the first sleepers 3. The second sleeper 8 has a structure substantially homologous to that of the first cross member 3, and extends in the direction of the width of the vehicle. In addition, the second crosspieces 8 in this embodiment are arranged on both the right and left sides with the floor tunnel 23 interposed between them, in the same position at a front part of an intermediate portion of the battery storage portion 21 in the front and rear directions of the vehicle. Internal vehicle ends of the second sleepers 8 are joined to the floor tunnel reinforcement 24 via the floor panel 2.
    As with the first cross member 3, the second cross members 8 in this embodiment include an upper member 81 and a lower member 82, which are separated from each other. These upper member 81 and lower member 82 have U-shaped sections. Regarding the lower member 82, an outer end portion 32a is joined to the inner side member panel 11 of the side member 1, and a lower flange portion is joined to the outer flat portion 22. With respect to the upper member 81, an outer end portion 81a is disposed inwardly in the direction of the width of the vehicle from the outer end portion 82a of the lower member 82, is joined to an upper portion of the lower member 82 in an outward position in the direction of the width of the vehicle from the upright wall portion 21B, and is stacked in the vertical direction of the vehicle. In addition, concerning the upper member 81, a lower flange portion is joined to the central flat portion 21A in an inward position in the direction of the width of the vehicle from the upright wall portion 21B, and a portion d the inner end is joined to the floor tunnel reinforcement 24.
    The lower member 82 of the second crosspieces 8 in this embodiment is configured to have a lower rigidity in the direction of the width of the vehicle than that of the upper member 81. Consequently, as with the lower member 32 of the first sleepers 3, the lower member 82 is configured so as not to cause buckling which is a simple bending in the middle, but to cause an accordion bending by an impact load transmitted from the lateral spar 1 to the member lower 82 in the case of a lateral impact, and to act as an impact absorbing member.
    As means for reducing the rigidity of the lower member 82 in the direction of the width of the vehicle, fragile portions are formed in the lower member 82. As shown in FIGS. 9 and 10, as fragile portions, through holes 83 having various shapes, such as elliptical shapes and circular shapes, are provided in the lower member 82 in multiple positions. These through holes 83 have an advantageous effect of reducing rigidity, and are also used to allow conduits and harnesses, not shown, to be arranged through. Consequently, the through holes 83 are formed in the two lateral surfaces of the lower member 82 in some cases, and are also made in the upper member 81 in other cases.
    As described above, in the lower vehicle structure according to the second embodiment of the present invention, the second cross members 8 extending in the direction of the width of the vehicle are formed closer to the front of the vehicle than the first sleepers 3. The second sleeper 8 includes the upper member 81 and the lower member 82, which are separated from each other, substantially similar to that of the first sleeper 3, and the through holes 83 are formed in the lower member 82. Consequently, the lower member 82 causes an accordion-like bending by an impact load transmitted from the lateral spar 1 to the lower member 82 of the second sleepers 8 in the case of a lateral impact, the impact load can be absorbed, the absorption capacity of the impact against the impact load in the case of a lateral impact can be improved while the first t raverse 3 is used analogously, and the protective effect of battery 4 can be further improved. The other advantageous effects are similar to those of the first embodiment.
    The embodiments of the present invention have thus been described above. However, the present invention is not limited to the above-mentioned embodiments. Various modifications and various changes can be made based on the technical concept of the present invention.
    For example, according to the lower vehicle structure in the embodiment which has already been described, the fragile portions as means for reducing the rigidity of the lower member 32 of the first cross member 3 in the direction of the width of the vehicle consist of ribs 33, 34, 35 and 36. As in the case of the second crosspieces 8, the fragile portions can be configured by providing the through holes 83 having various shapes.
    Side beam
    Floor panel
    First cross (cross)
    Drums
    4a Upper surface
    4b Lateral surface
    Second cross
    Internal side member panel
    External side member panel
    Battery storage portion
    21A Central flat portion
    21B Portion of upright wall
    External flat portion
    Upper organ
    31a Outer end portion
    31b Lower flange portion
    Lower organ
    32a Outer end portion
    32b Lower flange portion
    2c Inner end portion
    33, 35 Upper organ rib
    34, 36 Lower organ rib
    Battery mounting bracket
    Upper organ
    Lower organ
    Through hole
    S Closed section
    权利要求:
    Claims (7)
    [1" id="c-fr-0001]
    1. A lower vehicle structure, comprising: right and left side rails (1) which are arranged on opposite sides in a direction of the vehicle width and extend in a front and rear direction of the vehicle; a floor panel (2) disposed between the left and right side rails (1); sleepers (3, 8) which are arranged above the floor panel (2) in a vehicle and extend in the direction of the width of the vehicle; and a battery (4) disposed below the floor panel (2) in the vehicle, the floor panel (2) including a battery storage portion (21) bulging upward in the vehicle, the battery storage portion (21) including: a central flat portion (21A) disposed opposite an upper surface (4a) of the battery (4); and upright wall portions (21B) disposed closer to exteriors in the vehicle than side surfaces (4b) of the battery (4), the floor panel (2) being joined to the side rails (1) via portions external planes (22) extending from lower ends of the upright wall portions (21B) towards exteriors in the direction of the width of the vehicle, characterized in that the crosspieces (3, 8) each include an upper member (31 , 81) and a lower member (32, 82) which are separated from each other, relating to the lower member (32), an outer end portion (32a) is joined to the lateral spar (1), and a lower end portion is joined to the outer planar portion (22), and regarding the upper member (31), the outer end portion (31a) is disposed inwardly in the width direction of the vehicle from the outer end portion (32a) of the lower member (32), is joined to an upper portion of the lower member (32) in an outward position in the direction of the width of the vehicle from the upright wall portion (21B), and is joined to the central flat portion (21A) in an inward position from the upright wall portion (21B) in the width direction of the vehicle.
    [2" id="c-fr-0002]
    2. lower vehicle structure according to claim 1, wherein the lower member (32) has a U-shaped section and forms a closed section (S) together with the floor panel (2), the lower member ( 32) is configured to have a lower rigidity in the direction of the width of the vehicle than that of the upper member (31), the upper member (31) has a U-shaped section, and an interface which partitions the the upper member (31) and the lower member (32) relative to each other includes an upper surface which forms the closed section (S) of the lower member (32).
    [3" id="c-fr-0003]
    3. Lower vehicle structure according to claim 1 or 2, wherein the lower member (32) includes a fragile portion.
    [4" id="c-fr-0004]
    4. Lower vehicle structure according to any one of claims 1 to 3, wherein the lower member (32) is formed to have a thinner sheet thickness than the upper member (31).
    [5" id="c-fr-0005]
    5. Lower vehicle structure according to any one of claims 1 to 4, in which an upper surface (4a) of the lower member (32) is disposed at a height overlapping an internal panel of lateral spar (11) included in the side member (1) in a side view of the vehicle.
    [6" id="c-fr-0006]
    6. lower vehicle structure according to any one of claims 1 to 5, wherein an inner end portion (32c) of the lower member (32) is disposed away from the upright wall portion (21B ).
    [7" id="c-fr-0007]
    7. Lower vehicle structure according to any one of claims 1 to 6, in which the upper member (31) is joined to a battery fixing support (41) via the floor panel (2).
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    FR3065700A1|2018-11-02|REAR PORTION STRUCTURE OF VEHICLE
    EP3097000B1|2018-11-28|Body structure of a motor vehicle with reinforcements for distributing the forces linked to a rear shock absorber of the vehicle
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    FR3100216A1|2021-03-05|LOWER VEHICLE BODY STRUCTURE
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    FR3073487A1|2019-05-17|BODY STRUCTURE OF VEHICLE
    FR3093065A1|2020-08-28|LOWER VEHICLE STRUCTURE
    EP1847445B1|2009-07-15|Front structure of automobile and corresponding method
    FR3100165A1|2021-03-05|LOWER VEHICLE STRUCTURE
    FR3090505A1|2020-06-26|VEHICLE SIDE PART STRUCTURE
    FR3101298A1|2021-04-02|Support
    同族专利:
    公开号 | 公开日
    CN109292007A|2019-02-01|
    JP2019023029A|2019-02-14|
    FR3069224B1|2021-12-17|
    JP6977361B2|2021-12-08|
    CN109292007B|2021-05-25|
    DE102018115828A1|2019-01-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    KR20020095966A|2001-06-18|2002-12-28|현대자동차주식회사|Floor panel structure of vehicle|
    JP4096559B2|2002-01-22|2008-06-04|三菱自動車工業株式会社|Body structure|
    JP2006027455A|2004-07-16|2006-02-02|Honda Motor Co Ltd|Car body frame deformation controlling device|
    JP4858183B2|2007-01-22|2012-01-18|日産自動車株式会社|Lower body structure|
    FR2936189B1|2008-09-22|2011-06-17|Peugeot Citroen Automobiles Sa|STORAGE MODULE AND VEHICLE COMPRISING SUCH A MODULE|
    CN201777299U|2010-07-29|2011-03-30|比亚迪股份有限公司|Bottom structure of electric vehicle|
    WO2012063393A1|2010-11-10|2012-05-18|本田技研工業株式会社|Automobile floor structure|
    JP5708567B2|2012-06-14|2015-04-30|トヨタ自動車株式会社|Battery mounting structure for vehicles|
    JP5645147B2|2013-05-20|2014-12-24|三菱自動車工業株式会社|Auto body structure|
    CN103465763A|2013-08-19|2013-12-25|北京汽车新能源汽车有限公司|A0-grade pure electric car power battery arrangement scheme|
    JP6155228B2|2014-06-23|2017-06-28|本田技研工業株式会社|Bumper beam structure of vehicle|JP2020132051A|2019-02-22|2020-08-31|スズキ株式会社|Vehicle lower structure|
    US11091016B2|2019-03-06|2021-08-17|Mazda Motor Corporation|Lower vehicle-body structure of vehicle|
    JP2020199843A|2019-06-07|2020-12-17|マツダ株式会社|Lower body structure of electric vehicle|
    DE102020003433B3|2020-06-08|2021-08-12|Daimler Ag|Body support structure for a vehicle, in particular for a passenger car, and vehicle|
    CN112896319A|2021-03-10|2021-06-04|长城汽车股份有限公司|Lateral energy-absorbing force-transferring structure of electric automobile|
    法律状态:
    2019-05-28| PLFP| Fee payment|Year of fee payment: 2 |
    2020-05-28| PLFP| Fee payment|Year of fee payment: 3 |
    2021-05-28| PLFP| Fee payment|Year of fee payment: 4 |
    2021-07-16| PLSC| Publication of the preliminary search report|Effective date: 20210716 |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2017142791|2017-07-24|
    JP2017142791A|JP6977361B2|2017-07-24|2017-07-24|Vehicle undercarriage|
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