WO2013080305A1 - Vehicle body front structure - Google Patents

Vehicle body front structure Download PDF

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Publication number
WO2013080305A1
WO2013080305A1 PCT/JP2011/077567 JP2011077567W WO2013080305A1 WO 2013080305 A1 WO2013080305 A1 WO 2013080305A1 JP 2011077567 W JP2011077567 W JP 2011077567W WO 2013080305 A1 WO2013080305 A1 WO 2013080305A1
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WO
WIPO (PCT)
Prior art keywords
bead
tunnel
floor
vehicle
panel
Prior art date
Application number
PCT/JP2011/077567
Other languages
French (fr)
Japanese (ja)
Inventor
健雄 森
Original Assignee
トヨタ自動車株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by トヨタ自動車株式会社 filed Critical トヨタ自動車株式会社
Priority to PCT/JP2011/077567 priority Critical patent/WO2013080305A1/en
Publication of WO2013080305A1 publication Critical patent/WO2013080305A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/082—Engine compartments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/14—Dashboards as superstructure sub-units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/20—Floors or bottom sub-units
    • B62D25/2009—Floors or bottom sub-units in connection with other superstructure subunits
    • B62D25/2018—Floors or bottom sub-units in connection with other superstructure subunits the subunits being front structures

Definitions

  • the present invention relates to a vehicle body front structure in which a dash panel, a floor panel, and a floor tunnel of a vehicle are reinforced by a reinforcing member.
  • Patent Document 1 describes a vehicle body front structure including a dash cross member connected to the tunnel portion and the hinge pillar along the dash panel, and a tunnel member extending over the entire length of the tunnel portion. Has been. Further, Patent Document 1 describes that a bead is formed on a tunnel member and a closed section is formed by the tunnel member and the tunnel member.
  • an object of the present invention is to provide a vehicle body front part structure that can secure the strength and improve the collision performance while having a simple structure.
  • the vehicle body front structure includes a reinforcing member that is disposed on the vehicle inner side of the dash panel, the floor panel, and the floor tunnel across the entire vehicle width direction across the dash panel, the floor panel, and the floor tunnel.
  • the reinforcing member is formed with a bulging portion that bulges inside the vehicle, and the bulging portion forms a closed cross section with at least one of the dash panel, the floor panel, and the floor tunnel.
  • the reinforcing member is disposed on the dash panel, the floor panel, and the floor tunnel across the dash panel, the floor panel, and the floor tunnel
  • the reinforcing member is disposed on the dash panel, the floor panel, and the floor tunnel.
  • the reinforcing member of the sheet can reinforce the dash panel, the floor panel, and the floor tunnel.
  • a closed section is formed between at least one of the dash panel, the floor panel, and the floor tunnel by the bulging portion that bulges the reinforcing member toward the inside of the vehicle. It is possible to improve the collision performance by securing the strength.
  • the bulging portion can form a closed cross section extending in the vehicle front-rear direction between the lower portion of the floor tunnel and the floor panel.
  • the bulging portion may form a closed cross section extending in the vehicle front-rear direction between the upper portion of the floor tunnel.
  • the front side member is extended in the vehicle front-rear direction on the vehicle outer side of the dash panel and the floor panel, and the bulging portion is formed along the extended part of the front side member. can do.
  • the bulging portion By forming the bulging portion in this way, a double closed cross section in which the dash panel and the floor panel are sandwiched between the bulging portion and the front side member can be formed. Thereby, the buckling strength in the vehicle front-rear direction is increased, and the front collision performance can be further improved.
  • the bulging portion can be formed along a ridge formed by at least two of the dash panel, the floor panel, and the floor tunnel.
  • the strength of the ridge line can be increased.
  • the rigidity of this ridgeline direction can be improved by forming a closed cross section with this bulging part.
  • the reinforcing member can also straddle the tire house. By extending the reinforcing member over the tire house in this manner, a wider range of reinforcement can be performed with a single reinforcing member.
  • FIG. 3 is a perspective view of the vehicle body front part structure shown in FIG. 2. It is a perspective view which shows a reinforcement member.
  • FIG. 5 is a sectional view taken along line VV shown in FIG. 1.
  • FIG. 6 is a sectional view taken along line VI-VI shown in FIG. 1.
  • the vertical direction means the vertical direction in the vehicle vertical direction
  • the front-rear direction means the front-rear direction in the vehicle front-rear direction.
  • FIG. 1 is a perspective view showing a vehicle body front part structure according to the first embodiment.
  • FIG. 2 is a perspective view showing the vehicle body front part structure excluding the reinforcing member.
  • 3 is a perspective view of the vehicle body front part structure shown in FIG.
  • FIG. 4 is a perspective view showing a reinforcing member.
  • FIG. 5 is a cross-sectional view taken along line VV shown in FIG. 6 is a cross-sectional view taken along the line VI-VI shown in FIG.
  • Fr indicates the vehicle front-rear direction front
  • Up indicates the vehicle vertical direction upper side.
  • the vehicle body front structure 1 includes a dash panel 4, a floor panel 5, a floor tunnel 6 and a tire house 7, and a vehicle body front portion 2 extending over the entire vehicle width direction. And a reinforcing member 3 disposed inside the vehicle front portion 2.
  • the dash panel 4 is a panel that defines an engine room and a vehicle interior.
  • the dash panel 4 includes a vertical wall portion 4a arranged at the upper part in the vehicle vertical direction and a toe board 4b arranged at the upper part in the vehicle vertical direction.
  • the vertical wall portion 4a extends in the vehicle vertical direction over the entire vehicle width direction.
  • the toe board 4b extends downward in the vehicle vertical direction while inclining backward from the lower end edge of the vertical wall portion 4a in the vehicle front-rear direction.
  • the dash center ridgeline L1 extended in a vehicle width direction is formed in the connection position of the vertical wall part 4a and the toe board 4b.
  • the vertical wall 4a and the toe board 4b are formed with a plurality of through holes through which cables and the like are inserted.
  • the floor panel 5 extends in the vehicle longitudinal direction over the entire vehicle width direction. That is, the floor panel 5 extends from the lower end edge of the toe board 4b toward the rear in the vehicle front-rear direction. For this reason, a dash lower ridge line L2 extending in the vehicle width direction is formed at a connection position between the toe board 4b and the floor panel 5.
  • the floor tunnel 6 extends in the vehicle front-rear direction at the center in the vehicle width direction. That is, the floor tunnel 6 has a shape in which the center part in the vehicle width direction of the toe board 4b and the floor panel 5 bulges upward in the vehicle vertical direction, which is the vehicle inner side.
  • the floor tunnel 6 is connected to a pair of side wall portions 6a extending from the left and right floor panels 5 toward the vehicle width direction center side and extending upward in the vehicle vertical direction, and a vehicle vertical direction upper end edge of the pair of side wall portions 6a. And an upper wall portion 6b.
  • a pair of tunnel lower ridge lines L3 extending in the vehicle front-rear direction are formed at the connection positions of the toe board 4b and the floor panel 5 and the side wall 6a.
  • a pair of tunnel upper ridge lines L4 extending in the vehicle front-rear direction are formed at the connection position between the side wall 6a and the upper wall 6b.
  • the tire house 7 is disposed at both ends in the vehicle width direction and is curved so as to cover a front tire (not shown) of the vehicle. That is, the tire house 7 has a shape in which both ends of the vertical wall portion 4a, the toe board 4b, and the floor panel 5 bulge in the vehicle inner side. For this reason, a tire house ridge line L ⁇ b> 5 that is curved along the shape of the tire house 7 is formed at the connection position of the vertical wall portion 4 a, the toe board 4 b, the floor panel 5, and the tire house 7.
  • the tire house ridgeline L5 is formed in a direction intersecting the dash center ridgeline L1 and the dash lower ridgeline L2.
  • the dash panel 4, the floor panel 5, the floor tunnel 6 and the tire house 7 are formed by one steel plate or by joining a plurality of steel plates by welding or the like.
  • a pair of front side members 8 disposed on both sides in the vehicle width direction of the floor tunnel 6 and extending in the vehicle front-rear direction are joined to the vehicle outer side of the vehicle body front portion 2.
  • the front side member 8 is joined to the rear end in the vehicle longitudinal direction of the front side rail 9 extending in the vehicle longitudinal direction in the engine room.
  • the front side member 8 is joined to the vehicle outside of the vertical wall portion 4a, the toe board 4b, and the floor panel 5, and extends substantially rearward in the vehicle front-rear direction along the vertical wall portion 4a, the toe board 4b, and the floor panel 5.
  • the front side member 8 includes a pair of flange portions 8a extending in the vehicle width direction at both ends in the vehicle width direction, a pair of side wall portions 8b extending from the inner edge of the pair of flange portions 8a toward the vehicle outer side, And a bottom wall portion 8c connected to the vehicle outer edge of the side wall portion 8b.
  • a front side member ridgeline L6 extending in the vehicle front-rear direction along the front side member 8 is formed at a connection position between the flange portion 8a and the side wall portion 8b.
  • the collision load in the vehicle front-rear direction generated at the time of a front collision or the like is input from the front side rail 9 and the front side member 8 to the vertical wall 4a. Therefore, a dash cross bead 10 extending in the vehicle width direction is formed on the vertical wall portion 4a at a position where the front side member 8 is joined.
  • the dash cross bead 10 has a shape in which a part of the vertical wall portion 4a bulges inside or outside the vehicle. For this reason, an elongated annular cross-bead ridge line L7 that surrounds the dash cross bead 10 is formed at the joining position of the vertical wall portion 4a and the dash cross bead 10.
  • the reinforcing member 3 is a member that reinforces the vehicle body front portion 2.
  • the reinforcing member 3 straddles the dash panel 4 (the vertical wall portion 4a and the toe board 4b), the floor panel 5, the floor tunnel 6 (the side wall portion 6a and the upper wall portion 6b), and the tire house 7 over the entire vehicle width direction.
  • the dash panel 4 (the vertical wall portion 4a and the toe board 4b), the floor panel 5, the floor tunnel 6 (the side wall portion 6a and the upper wall portion 6b), and the tire house 7 are arranged on the vehicle inner side.
  • the reinforcing member 3 is formed by bending a single steel plate.
  • the material of the reinforcing member 3 is preferably an ultra-high strength material (ultra-high tensile material).
  • the reinforcing member 3 is joined to the dash panel 4, the floor panel 5, the floor tunnel 6, and the tire house 7 by spot welding or the like.
  • the reinforcing member 3 is formed in substantially the same shape as the dash panel 4, the floor panel 5, the floor tunnel 6 and the tire house 7, and the dash panel corresponding reinforcing plate portion 11 corresponding to the dash panel 4.
  • the dash panel corresponding reinforcing plate portion 11 includes a vertical wall corresponding reinforcing plate portion 11a corresponding to the vertical wall portion 4a and a toe board corresponding reinforcing plate portion 11b corresponding to the toe board 4b.
  • the reinforcing plate portion 13 corresponding to the floor tunnel includes the reinforcing plate portion 13a corresponding to the side wall portion 6a of the floor tunnel 6 and the reinforcing plate portion corresponding to the upper wall 6a corresponding to the upper wall portion 6b of the floor tunnel 6. 13b.
  • the reinforcing member 3 is formed with a plurality of beads in which a part of the reinforcing member 3 is expanded toward the vehicle interior side. More specifically, the reinforcing member 3 is formed with a tunnel lower bead 21, a tunnel upper bead 22, a tire house bead 23, a front side member bead 24, a cross bead 25, and a thin bead 26. ing.
  • the tunnel lower bead 21 is a bead formed at a position corresponding to the tunnel lower ridge line L3 (see FIG. 2), and extends in the vehicle front-rear direction along the tunnel lower ridge line L3.
  • the tunnel lower bead 21 is formed by bulging the connecting portion between the floor panel corresponding reinforcing plate portion 12 and the floor tunnel side wall corresponding reinforcing plate portion 13a toward the inside of the vehicle. Therefore, a closed cross section extending in the vehicle front-rear direction is formed by the floor panel 5 and the side wall portion 6a of the floor tunnel 6 and the tunnel lower bead 21 (see FIGS. 1 and 6).
  • the closed cross section is preferably substantially rectangular, but may not necessarily be substantially rectangular as long as a desired strength can be ensured.
  • the tunnel upper bead 22 is a bead formed at a position corresponding to the tunnel upper ridge line L4 (see FIG. 2), and extends in the vehicle front-rear direction along the tunnel upper ridge line L4.
  • the tunnel upper bead 22 is formed by bulging a connecting portion between the floor tunnel side wall corresponding reinforcing plate portion 13a and the floor tunnel upper wall corresponding reinforcing plate portion 13b to the inside of the vehicle. Therefore, a closed cross section extending in the vehicle front-rear direction is formed by the side wall portion 6a and the upper wall portion 6b of the floor tunnel 6 and the tunnel upper bead 22 (see FIGS. 1 and 6).
  • the closed cross section is preferably substantially rectangular, but may not necessarily be substantially rectangular as long as a desired strength can be ensured.
  • the tire house bead 23 is a bead formed on the tire house-compatible reinforcing plate portion 14 and is formed by causing the tire house-compatible reinforcing plate portion 14 to bulge inside the vehicle. For this reason, a closed section is formed by the tire house 7 and the tire house bead 23 (see FIG. 1).
  • the closed cross section is preferably substantially rectangular, but may not necessarily be substantially rectangular as long as a desired strength can be ensured.
  • the tire house beads 23 extend radially around the rotation axis of a tire (not shown) surrounded by the tire house 7.
  • the tire house bead 23 only needs to extend in a direction intersecting with the dash center ridge line L1 (see FIG. 2) extending in the vehicle width direction, and is not necessarily radial with the rotation axis of the tire surrounded by the tire house 7 as the center. It does not have to extend.
  • the tire house bead 23 corresponds to the tire house corresponding reinforcing plate portion 11a, the toe board corresponding reinforcing plate portion 11b and the floor panel corresponding reinforcing plate portion 12 from the both ends of the tire house corresponding reinforcing plate portion 14 in the vehicle width direction. It extends toward a tire house-compatible reinforcing plate portion ridge line L15 formed at a connection position with the reinforcing plate portion 14.
  • the tire house bead 23 may extend to the tire house-compatible reinforcing plate portion ridge line L15, or may extend only to the vicinity of the tire house-compatible reinforcing plate portion ridge line L15.
  • the front side member bead 24 is a bead formed along the vertical wall 4a, the toe board 4b, and the floor panel 5 where the front side member 8 is extended. It extends to.
  • the front side member bead 24 is formed to have substantially the same width as the front side member 8, and the vertical wall corresponding reinforcing plate portion 11a, the toe board corresponding reinforcing plate portion 11b, and the floor panel corresponding reinforcing plate portion 12 bulge to the inside of the vehicle. It is formed by letting. Therefore, a double closed cross section sandwiching the vertical wall 4a, toeboard 4b and floor panel 5 by the vertical wall 4a, toeboard 4b and floor panel 5, the front side member 8 and the front side member bead 24 has a double closed cross section. It is formed (see FIGS. 1 and 6).
  • the closed cross section is preferably substantially rectangular, but may not necessarily be substantially rectangular as long as a desired strength can be ensured.
  • the cross bead 25 is a bead formed at a position corresponding to the dash cross bead 10 and extends along the dash cross bead 10 in the vehicle width direction.
  • the cross bead 25 is formed to have substantially the same width as the dash cross bead 10 and is formed by causing the vertical wall portion corresponding reinforcing plate portion 11a to bulge to the vehicle inner side. Therefore, a closed cross section is formed by the dash cross bead 10 and the cross bead 25 (see FIGS. 1 and 5).
  • the closed cross section is preferably substantially rectangular, but may not necessarily be substantially rectangular as long as a desired strength can be ensured.
  • the thin bead 26 is formed by bulging the dash panel corresponding reinforcing plate portion 11, the floor panel corresponding reinforcing plate portion 12 and the floor tunnel corresponding reinforcing plate portion 13 to the inside of the vehicle. For this reason, a closed cross section is formed by the reinforcing plate portion 11 corresponding to the dash panel, the reinforcing plate portion 12 corresponding to the floor panel, the reinforcing plate portion 13 corresponding to the floor tunnel, and the thin bead 26 (see FIGS. 1, 5 and 6). ).
  • the closed cross section is preferably substantially rectangular, but may not necessarily be substantially rectangular as long as a desired strength can be ensured.
  • the bulge height of the thin bead 26 with respect to the dash panel reinforcing plate portion 11, the floor panel corresponding reinforcing plate portion 12 and the floor tunnel corresponding reinforcing plate portion 13 is not particularly limited. From the viewpoint of improving the reinforcing performance while suppressing, the size is preferably 3 to 5 times the plate thickness of the reinforcing member 3.
  • the shape of the thin bead 26 is not particularly limited, but is preferably rectangular from the viewpoint of ease of manufacture.
  • the interval between the thin beads 26 is not particularly limited. However, when the reinforcing member 3 is joined to the vehicle body front portion 2 by spot welding, the distance between the thin beads 26 is about 50 to 100 mm so as not to interfere with the spot welding position. It is preferable to set.
  • the thin bead 26 is within the range not interfering with the tunnel lower bead 21, the tunnel upper bead 22, the tire house bead 23, the front side member bead 24 and the cross bead 25, and the dash panel corresponding reinforcing plate 11 and the floor panel corresponding reinforcing plate. It is preferable to form on the whole surface of the part 12 and the reinforcement board part 13 corresponding to a floor tunnel.
  • the reinforcing member 3 configured in this way has a dash at a position where the tunnel lower bead 21, the tunnel upper bead 22, the tire house bead 23, the front side member bead 24, the cross bead 25 and the thin bead 26 are not formed.
  • the panel 4, the floor panel 5, the floor tunnel 6 and the tire house 7 are joined to the inside of the vehicle.
  • the reinforcing member 3 across the dash panel 4, the floor panel 5, the floor tunnel 6 and the tire house 7 extends across the entire vehicle width direction. Since the panel 4, the floor panel 5, the floor tunnel 6 and the tire house 7 are disposed, the dash panel 4, the floor panel 5, the floor tunnel 6 and the tire house 7 can be reinforced with a single reinforcing member. it can.
  • a closed cross section is formed between the dash panel 4, the floor panel 5, the floor tunnel 6, and the tire house 7 by the beads formed in the reinforcing member 3.
  • the tunnel lower bead 21 formed at a position corresponding to the tunnel lower ridge line L3 has a closed cross section extending in the vehicle front-rear direction by the floor panel 5 and the side wall portion 6a of the floor tunnel 6. For this reason, the front collision performance can be improved by securing the strength of the vehicle body front portion 2.
  • tunnel upper bead 22 formed at a position corresponding to the tunnel upper ridge line L4 and the side wall 6a and the upper wall 6b of the floor tunnel 6 form a closed cross section extending in the vehicle front-rear direction.
  • the strength of the vehicle body front part 2 can be secured and the front collision performance can be improved.
  • FIG. 7 is a perspective view showing a reinforcing member used in the vehicle body front structure according to the second embodiment.
  • the vehicle body front structure 31 according to the second embodiment is basically the same as the vehicle body front structure 1 according to the first embodiment, and only the shape of the reinforcing member is different. For this reason, in the following description, only the part different from the first embodiment will be described, and the description of the same part as the first embodiment will be omitted.
  • the reinforcing member 32 used in the vehicle body front structure 31 includes a dash panel 4 (vertical wall portion 4a and toe board 4b), a floor panel 5, and a floor tunnel 6 (side wall portion 6a). And dash panel 4 (vertical wall portion 4a and toe board 4b), floor panel 5, floor tunnel 6 (side wall portion 6a and upper wall portion 6b) across the entire vehicle width direction across the upper wall portion 6b) and the tire house 7. ) And the inside of the tire house 7 in the vehicle.
  • the reinforcing member 32 is formed in substantially the same shape as the dash panel 4, the floor panel 5, the floor tunnel 6, and the tire house 7, and corresponds to the dash panel corresponding reinforcing plate portion 41 corresponding to the dash panel 4 and the floor panel 5.
  • the floor panel corresponding reinforcing plate portion 42, the floor tunnel corresponding reinforcing plate portion 43 corresponding to the floor tunnel 6, and the tire house corresponding reinforcing plate portion 44 corresponding to the tire house 7 are provided.
  • the dash panel corresponding reinforcing plate portion 41 includes a vertical wall portion corresponding reinforcing plate portion 41a corresponding to the vertical wall portion 4a and a toe board corresponding reinforcing plate portion 41b corresponding to the toe board 4b.
  • the reinforcing plate portion 43 corresponding to the floor tunnel includes a reinforcing plate portion 43a corresponding to the side wall portion 6a of the floor tunnel 6 and a reinforcing plate portion corresponding to the floor tunnel upper wall corresponding to the upper wall portion 6b of the floor tunnel 6. 43b.
  • the reinforcing member 32 is joined to the dash panel 4, the floor panel 5, the floor tunnel 6, and the tire house 7 by spot welding or the like.
  • the reinforcing member 32 includes a tunnel lower bead 21, a tunnel upper bead 22, a tire house bead 23, a front side member bead 24, and a cross bead 25. Is formed.
  • the reinforcing member 32 is not formed with the thin bead 26 formed in the reinforcing member 3 of the first embodiment.
  • the dash panel corresponding reinforcing plate 41 (the vertical wall corresponding reinforcing plate 41a and the toeboard corresponding reinforcing plate 41b), the floor panel corresponding reinforcing plate 42 and the floor tunnel corresponding reinforcing plate 43 (the floor tunnel side wall corresponding reinforcing plate). 43a and a floor tunnel upper wall corresponding reinforcing plate 43b) are formed with a plurality of lightening holes 45. Note that the weight reduction hole 45 is not formed in the tire house-compatible reinforcing plate portion 44.
  • the front side member bead 24 and the cross bead 25 are formed with a plurality of lightening holes 46.
  • the lightening hole 45 and the lightening hole 46 are intended to reduce the weight of the reinforcing member 32, and are formed by removing the reinforcing member 32.
  • the position, shape, size, and the like of the lightening hole 45 and the lightening hole 46 can be set as appropriate as long as the strength of the reinforcing member 32 can be maintained.
  • the reinforcing member 32 configured as described above includes a tunnel lower bead 21, a tunnel upper bead 22, a tire house bead 23, a front side member bead 24, a cross bead 25, a lightening hole 45, and a lightening hole 46.
  • the dash panel 4, the floor panel 5, the floor tunnel 6 and the tire house 7 are joined to the inside of the vehicle.
  • the weight reduction hole 45 and the lightening hole 46 are formed in the reinforcing member 32, thereby reducing the weight of the vehicle body front part. It is possible to improve the collision performance by securing the strength.
  • FIG. 8 is a perspective view showing a reinforcing member used in the vehicle body front structure according to the third embodiment.
  • the vehicle body front structure 51 according to the third embodiment is basically the same as the vehicle body front structure 1 according to the first embodiment, and only the shape of the reinforcing member is different. For this reason, in the following description, only the part different from the first embodiment will be described, and the description of the same part as the first embodiment will be omitted.
  • the reinforcing member 52 used in the vehicle body front structure 51 includes a dash panel 4 (vertical wall portion 4a and toe board 4b), a floor panel 5, and a floor tunnel 6 (side wall portion 6a). And dash panel 4 (vertical wall portion 4a and toe board 4b), floor panel 5, floor tunnel 6 (side wall portion 6a and upper wall portion 6b) across the entire vehicle width direction across the upper wall portion 6b) and the tire house 7. ) And the inside of the tire house 7 in the vehicle.
  • the reinforcing member 52 is formed in substantially the same shape as the dash panel 4, the floor panel 5, the floor tunnel 6 and the tire house 7, and corresponds to the dash panel corresponding reinforcing plate portion 61 corresponding to the dash panel 4 and the floor panel 5.
  • the floor panel corresponding reinforcing plate portion 62, the floor tunnel corresponding reinforcing plate portion 63 corresponding to the floor tunnel 6, and the tire house corresponding reinforcing plate portion 64 corresponding to the tire house 7 are provided.
  • the dash panel corresponding reinforcing plate portion 61 includes a vertical wall corresponding reinforcing plate portion 61a corresponding to the vertical wall portion 4a and a toe board corresponding reinforcing plate portion 61b corresponding to the toe board 4b.
  • the reinforcing plate portion 63 corresponding to the floor tunnel includes a reinforcing plate portion 63a corresponding to the side wall portion 6a of the floor tunnel 6 and a reinforcing plate portion corresponding to the floor tunnel upper wall corresponding to the upper wall portion 6b of the floor tunnel 6. 63b.
  • the reinforcing member 52 is joined to the dash panel 4, the floor panel 5, the floor tunnel 6, and the tire house 7 by spot welding or the like.
  • the reinforcing member 52 is formed with a plurality of beads in which a part of the reinforcing member 52 is bulged toward the vehicle interior side. More specifically, the reinforcing member 52 includes a dash center ridge bead 71, a dash lower ridge bead 72, a tunnel lower ridge bead 73, a tunnel upper ridge bead 74, a tire house ridge bead 75, and a front side member. A ridge line bead 76 and a cross bead ridge line bead 77 are formed. In addition, the thin bead 26 formed in the reinforcing member 3 of the first embodiment is not formed on the reinforcing member 52.
  • the dash center ridge line bead 71 is a bead formed at a position corresponding to the dash center ridge line L1 (see FIG. 2), and extends in the vehicle width direction along the dash center ridge line L1.
  • the dash center ridge line bead 71 may be formed over the entire length of the dash center ridge line L1, but may be formed only on a part of the dash center ridge line L1, and a plurality of the dash center ridge line beads 71 are formed along the dash center ridge line L1. May be.
  • the dash center ridge bead 71 is formed by bulging the connecting portion between the vertical wall portion corresponding reinforcing plate portion 61a and the toe board corresponding reinforcing plate portion 61b to the inside of the vehicle. For this reason, a closed section extending in the vehicle width direction is formed by the vertical wall portion 4a and the toe board 4b and the dash center ridge line bead 71.
  • the closed cross section is preferably substantially rectangular, but may not necessarily be substantially rectangular as long as a desired strength can be ensured.
  • the dash lower ridge line bead 72 is a bead formed at a position corresponding to the dash lower ridge line L2 (see FIG. 2), and extends in the vehicle width direction along the dash lower ridge line L2.
  • the dash lower ridge line bead 72 may be formed over the entire length of the dash lower ridge line L2, but may be formed only on a part of the dash lower ridge line L2, and a plurality of dash lower ridge line beads 72 are formed along the dash lower ridge line L2. May be.
  • the dash lower ridge bead 72 is formed by bulging the connecting portion between the toe board corresponding reinforcing plate portion 61b and the floor panel corresponding reinforcing plate portion 62 to the inside of the vehicle.
  • the toe board 4b, the floor panel 5, and the dash lower ridge line bead 72 form a closed section extending in the vehicle width direction.
  • the closed cross section is preferably substantially rectangular, but may not necessarily be substantially rectangular as long as a desired strength can be ensured.
  • the tunnel lower ridge line bead 73 is a bead formed at a position corresponding to the tunnel lower ridge line L3 (see FIG. 2), and extends in the vehicle front-rear direction along the tunnel lower ridge line L3.
  • the tunnel lower ridge line bead 73 may be formed over the entire length of the tunnel lower ridge line L3, but may be formed only on a part of the tunnel lower ridge line L3, and a plurality of tunnel lower ridge lines bead L3 are formed along the tunnel lower ridge line L3. May be.
  • the tunnel lower ridge line bead 73 is formed by bulging a connection portion between the floor panel corresponding reinforcing plate portion 62 and the floor tunnel side wall corresponding reinforcing plate portion 63a toward the inside of the vehicle.
  • a closed cross section extending in the vehicle front-rear direction is formed by the side wall 6a of the floor panel 5 and the floor tunnel 6 and the tunnel lower ridge bead 73.
  • the closed cross section is preferably substantially rectangular, but may not necessarily be substantially rectangular as long as a desired strength can be ensured.
  • the tunnel upper ridge line bead 74 is a bead formed at a position corresponding to the tunnel upper ridge line L4 (see FIG. 2), and extends in the vehicle front-rear direction along the tunnel upper ridge line L4.
  • the tunnel upper ridge line bead 74 may be formed over the entire length of the tunnel upper ridge line L4, but may be formed only on a part of the tunnel upper ridge line L4, and a plurality of tunnel upper ridge line beads 74 are formed along the tunnel upper ridge line L4. May be.
  • the tunnel upper ridge bead 74 is formed by bulging the connecting portion between the floor tunnel side wall corresponding reinforcing plate 63a and the floor tunnel upper wall corresponding reinforcing plate 63b to the inside of the vehicle.
  • a closed section extending in the vehicle front-rear direction is formed by the side wall portion 6 a and the upper wall portion 6 b of the floor tunnel 6 and the tunnel upper ridge bead 74.
  • the closed cross section is preferably substantially rectangular, but may not necessarily be substantially rectangular as long as a desired strength can be ensured.
  • the tire house ridge line bead 75 is a bead formed at a position corresponding to the tire house ridge line L5 (see FIG. 2), and is curved along the tire house ridge line L5.
  • the tire house ridge line beads 75 may be formed over the entire length of the tire house ridge line L5, but may be formed only on a part of the tire house ridge line L5, and a plurality of tire house ridge lines L5 are formed along the tire house ridge line L5. May be.
  • the tire house ridge line bead 75 bulges the connecting portion between the vertical wall portion corresponding reinforcing plate portion 61a, the toe board corresponding reinforcing plate portion 61b, the floor panel corresponding reinforcing plate portion 62, and the tire house corresponding reinforcing plate portion 64 to the inside of the vehicle. It is formed by. For this reason, a closed cross section is formed by the vertical wall portion 4a, the toe board 4b, the floor panel 5, and the tire house ridge bead 75.
  • the closed cross section is preferably substantially rectangular, but may not necessarily be substantially rectangular as long as a desired strength can be ensured.
  • the front side member ridge line bead 76 is a bead formed at a position corresponding to the front side member ridge line L6 (see FIG. 2), and is formed in an elongated annular shape extending substantially in the vehicle front-rear direction along the front side member ridge line L6. Yes.
  • the front side member ridge line bead 76 may be formed over the entire length of the front side member ridge line L6, but may be formed only on a part of the front side member ridge line L6, along the front side member ridge line L6. A plurality of them may be formed.
  • the front side member ridge line bead 76 is formed by expanding the vertical wall portion corresponding reinforcing plate portion 11a, the toe board corresponding reinforcing plate portion 11b, and the floor panel corresponding reinforcing plate portion 12 to the inside of the vehicle.
  • the cross bead ridge line bead 77 is a bead formed at a position corresponding to the cross bead ridge line L7 (see FIG. 2), and is formed in an elongated annular shape extending in the vehicle width direction along the cross bead ridge line L7.
  • the cross bead ridge line bead 77 is formed by causing the vertical wall portion corresponding reinforcing plate portion 11a to bulge to the vehicle inner side.
  • a weight reduction hole 78 is formed in the reinforcing member 52.
  • the weight reducing hole 78 is intended to reduce the weight of the reinforcing member 52 and is formed by removing the reinforcing member 52.
  • the position, shape, size, and the like of the lightening hole 78 can be set as appropriate as long as the strength of the reinforcing member 52 can be maintained.
  • the weight reduction holes 78 are shown by shading, and the weight reduction holes 78 are formed in the toe board corresponding reinforcing plate portion 11 b and the tire house corresponding reinforcing plate portion 14.
  • the strength of the ridge line can be increased by forming the bead on the reinforcing member 52 along the ridge line.
  • the rigidity in the ridge line direction can be increased by forming a closed cross section with this bead.
  • the plurality of beads are formed on the reinforcing member.
  • the beads formed on the reinforcing member form a closed cross section with at least one of the dash panel 4, the floor panel 5, and the floor tunnel 6.
  • the number, position, shape, size, and the like can be changed as appropriate.
  • the present invention can be used for a vehicle body front structure in which a dash panel, a floor panel, and a floor tunnel of a vehicle are reinforced by a reinforcing member.
  • SYMBOLS 1 Vehicle body front part structure, 2 ... Vehicle body front part, 3 ... Reinforcement member, 4 ... Dash panel, 4a ... Dash panel vertical wall part, 4b ... Dash panel toe board, 5 ... Floor panel, 6 ... Floor tunnel, 6a ... side wall part of floor tunnel, 6b ... upper wall part of floor tunnel, 7 ... tire house, 8 ... front side member, 8a ... flange part of front side member, 8b ... side wall part of front side member, 8c ... front side member Bottom wall portion, 9 ... front side rail, 10 ... dash cross bead, 11 ... dash panel corresponding reinforcing plate portion, 11a ...
  • Reinforcement member 41 ... Dash panel corresponding reinforcing plate 41a ... Dash panel corresponding reinforcing plate corresponding to vertical wall 41b ... Dash panel compatible reinforcing plate portion, toeboard compatible reinforcing plate portion, 42 ... Floor panel compatible reinforcing plate portion, 43 ... Floor tunnel compatible reinforcing plate portion, 43a ... Floor tunnel side wall reinforcing plate portion, 43b ... Floor tunnel upper wall Corresponding reinforcing plate, 44 ... Tire house-compatible reinforcing plate, 45 ... Lightening hole, 46 ... Lightening hole, 51 ... Car body Part structure, 52 ... reinforcing member, 61 ... reinforcement plate portion corresponding to dash panel, 61a ...
  • reinforcement plate portion corresponding to vertical wall portion of dash panel correspondence reinforcement plate portion, 61b ... reinforcement plate portion corresponding to toe board of reinforcement plate portion corresponding to dash panel, 62 ... Reinforcing plate part for floor panel, 63 ... Reinforcing plate part for floor tunnel, 63a ... Reinforcing plate part for floor tunnel side wall, 63b ... Reinforcing plate part for upper wall of floor tunnel, 64 ... Reinforcing plate part for tire house, 71 ... Dash Center ridge bead, 72 ... Lower ridge ridge bead, 73 ... Tunnel lower ridge bead, 74 ... Tunnel upper ridge bead, 75 ... Tire house ridge bead, 76 ...

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

Provided is a vehicle body front structure whereby strength can be maintained and impact performance can be enhanced even by a simple structure. A reinforcing member (3) disposed on the vehicle inside of a dash panel (4), a floor panel (5), and a floor tunnel (6) is provided extending along the entire vehicle width across the dash panel (4), the floor panel (5), the floor tunnel (6), and a wheel housing (7). A tunnel lower bead (21), a tunnel upper bead (22), and a wheel housing bead (23) forming a closed section with the dash panel (4), the floor panel (5), the floor tunnel (6), and the wheel housing (7), and a front side member bead (24) and a cross bead (25) forming a closed section with a front side member (8) and a dash cross bead (10) are formed in the reinforcing member (3).

Description

車体前部構造Body front structure
　本発明は、車両のダッシュパネル、フロアパネル及びフロアトンネルが補強部材により補強される車体前部構造に関する。 The present invention relates to a vehicle body front structure in which a dash panel, a floor panel, and a floor tunnel of a vehicle are reinforced by a reinforcing member.
　特許文献１には、ダッシュパネルに沿ってトンネル部とヒンジピラーとに接続されるダッシュクロスメンバと、トンネル部の全長に亘って延設されるトンネル部メンバと、を備えた車体前部構造が記載されている。更に、特許文献１には、トンネル部メンバにビードを形成し、トンネル部メンバとトンネル部メンバとにより閉断面を形成することが記載されている。 Patent Document 1 describes a vehicle body front structure including a dash cross member connected to the tunnel portion and the hinge pillar along the dash panel, and a tunnel member extending over the entire length of the tunnel portion. Has been. Further, Patent Document 1 describes that a bead is formed on a tunnel member and a closed section is formed by the tunnel member and the tunnel member.
特開２００２－３６２４１９号公報JP 2002-362419 A
　ところで、衝突性能を向上させるためには、車体前部の強度を高める必要がある。しかしながら、補強部材の追加や板厚の増加などにより車体前部の強度を高めると、部品点数や重量の増加を招く可能性がある。特許文献１に記載された車体前部構造は、トンネル部の強度は高くなるものの、車体前部におけるその他の部分の強度を高めるためには、更なる補強部材の追加などが必要になる。 By the way, in order to improve the collision performance, it is necessary to increase the strength of the front part of the vehicle body. However, if the strength of the front part of the vehicle body is increased by adding a reinforcing member or increasing the plate thickness, there is a possibility that the number of parts or the weight may be increased. Although the vehicle body front part structure described in Patent Document 1 increases the strength of the tunnel part, in order to increase the strength of other parts in the vehicle body front part, it is necessary to add a further reinforcing member.
　このため、簡素な構造としつつ、強度を確保して衝突性能を確保及び向上させるという観点からは、特許文献１に記載された車体前部構造でも十分ではなく、依然、改善の余地がある。 For this reason, from the viewpoint of securing the strength and securing and improving the collision performance with a simple structure, the vehicle body front structure described in Patent Document 1 is not sufficient, and there is still room for improvement.
　そこで、本発明は、簡素な構造としつつ、強度を確保して衝突性能を向上させることができる車体前部構造を提供することを目的とする。 Therefore, an object of the present invention is to provide a vehicle body front part structure that can secure the strength and improve the collision performance while having a simple structure.
　本発明に係る車体前部構造は、ダッシュパネル、フロアパネル及びフロアトンネルを跨いで、車幅方向全体に亘ってダッシュパネル、フロアパネル及びフロアトンネルの車両内側に配設される補強部材を有し、補強部材は、車両内側に膨出する膨出部が形成され、膨出部は、ダッシュパネル、フロアパネル及びフロアトンネルのうち少なくとも一つと閉断面を形成する。 The vehicle body front structure according to the present invention includes a reinforcing member that is disposed on the vehicle inner side of the dash panel, the floor panel, and the floor tunnel across the entire vehicle width direction across the dash panel, the floor panel, and the floor tunnel. The reinforcing member is formed with a bulging portion that bulges inside the vehicle, and the bulging portion forms a closed cross section with at least one of the dash panel, the floor panel, and the floor tunnel.
　本発明に係る車体前部構造によれば、ダッシュパネル、フロアパネル及びフロアトンネルを跨いで、車幅方向全体に亘る補強部材がダッシュパネル、フロアパネル及びフロアトンネルに配設されているため、１枚の補強部材で、ダッシュパネル、フロアパネル及びフロアトンネルの補強を行うことができる。しかも、補強部材を車両内側に膨出させた膨出部により、ダッシュパネル、フロアパネル及びフロアトンネルのうち少なくとも一つとの間で閉断面が形成されるため、簡素な構造としつつ、車体前部の強度を確保して衝突性能を向上することができる。 According to the vehicle body front structure according to the present invention, since the reinforcing member is disposed on the dash panel, the floor panel, and the floor tunnel across the dash panel, the floor panel, and the floor tunnel, the reinforcing member is disposed on the dash panel, the floor panel, and the floor tunnel. The reinforcing member of the sheet can reinforce the dash panel, the floor panel, and the floor tunnel. In addition, a closed section is formed between at least one of the dash panel, the floor panel, and the floor tunnel by the bulging portion that bulges the reinforcing member toward the inside of the vehicle. It is possible to improve the collision performance by securing the strength.
　また、本発明は、膨出部が、フロアトンネルの下部及びフロアパネルとの間に、車両前後方向に延設される閉断面を形成するものとすることができる。このように膨出部で閉断面を形成することで、車体前部の強度を確保して前突性能を向上させることができる。 Further, according to the present invention, the bulging portion can form a closed cross section extending in the vehicle front-rear direction between the lower portion of the floor tunnel and the floor panel. By forming the closed section at the bulging portion in this way, the strength of the front portion of the vehicle body can be ensured and the front collision performance can be improved.
　また、本発明は、膨出部が、フロアトンネルの上部との間に、車両前後方向に延設される閉断面を形成するものとすることができる。このように膨出部で閉断面を形成することで、車体前部の強度を確保して前突性能を向上させることができる。 Further, according to the present invention, the bulging portion may form a closed cross section extending in the vehicle front-rear direction between the upper portion of the floor tunnel. By forming the closed section at the bulging portion in this way, the strength of the front portion of the vehicle body can be ensured and the front collision performance can be improved.
　また、本発明は、ダッシュパネル及びフロアパネルの車両外側にフロントサイドメンバが車両前後方向に延設されており、膨出部が、フロントサイドメンバの延設部位に沿って形成されているものとすることができる。このように膨出部を形成することで、膨出部とフロントサイドメンバとによりダッシュパネル及びフロアパネルを挟んだ二重の閉断面を形成することができる。これにより、車両前後方向の座屈強度が高まり、前突性能を更に向上させることができる。 Further, according to the present invention, the front side member is extended in the vehicle front-rear direction on the vehicle outer side of the dash panel and the floor panel, and the bulging portion is formed along the extended part of the front side member. can do. By forming the bulging portion in this way, a double closed cross section in which the dash panel and the floor panel are sandwiched between the bulging portion and the front side member can be formed. Thereby, the buckling strength in the vehicle front-rear direction is increased, and the front collision performance can be further improved.
　また、本発明は、膨出部が、ダッシュパネル、フロアパネル及びフロアトンネルのうち少なくとも二つにより形成される稜線に沿って形成されているものとすることができる。このように膨出部を形成することで、稜線の強度を高めることができる。しかも、この膨出部により閉断面を形成することで、この稜線方向の剛性を高めることができる。 Further, according to the present invention, the bulging portion can be formed along a ridge formed by at least two of the dash panel, the floor panel, and the floor tunnel. By forming the bulging portion in this manner, the strength of the ridge line can be increased. And the rigidity of this ridgeline direction can be improved by forming a closed cross section with this bulging part.
　また、本発明は、補強部材が、タイヤハウスも跨いでいるものとすることができる。このように補強部材をタイヤハウスにまで跨がせることで、より広範囲の補強を１枚の補強部材で行うことができる。 In the present invention, the reinforcing member can also straddle the tire house. By extending the reinforcing member over the tire house in this manner, a wider range of reinforcement can be performed with a single reinforcing member.
　本発明によれば、簡素な構造としつつ、強度を確保して衝突性能を向上させることができる。 According to the present invention, it is possible to improve the collision performance by securing the strength while having a simple structure.
第１の実施形態に係る車体前部構造を示す斜視図である。It is a perspective view which shows the vehicle body front part structure which concerns on 1st Embodiment. 補強部材を除いた車体前部構造を示す斜視図である。It is a perspective view which shows the vehicle body front part structure except a reinforcement member. 図２に示す車体前部構造の透視図である。FIG. 3 is a perspective view of the vehicle body front part structure shown in FIG. 2. 補強部材を示す斜視図である。It is a perspective view which shows a reinforcement member. 図１に示すＶ－Ｖ線における断面図である。FIG. 5 is a sectional view taken along line VV shown in FIG. 1. 図１に示すＶＩ－ＶＩ線における断面図である。FIG. 6 is a sectional view taken along line VI-VI shown in FIG. 1. 第２の実施形態に係る車体前部構造に用いる補強部材を示す斜視図である。It is a perspective view which shows the reinforcement member used for the vehicle body front part structure which concerns on 2nd Embodiment. 第３の実施形態に係る車体前部構造に用いる補強部材を示す斜視図である。It is a perspective view which shows the reinforcement member used for the vehicle body front part structure which concerns on 3rd Embodiment.
　以下、図面を参照して、本発明に係る車体前部構造の実施形態を説明する。なお、各図において同一又は相当する要素については同一の符号を付し、重複する説明を省略する。また、以下の説明において、上下方向は、車両上下方向における上下方向を意味し、前後方向は、車両前後方向における前後方向を意味する。 Hereinafter, an embodiment of a vehicle body front structure according to the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected about the element which is the same or it corresponds in each figure, and the overlapping description is abbreviate | omitted. In the following description, the vertical direction means the vertical direction in the vehicle vertical direction, and the front-rear direction means the front-rear direction in the vehicle front-rear direction.
［第１の実施形態］
　図１は、第１の実施形態に係る車体前部構造を示す斜視図である。図２は、補強部材を除いた車体前部構造を示す斜視図である。図３は、図２に示す車体前部構造の透視図である。図４は、補強部材を示す斜視図である。図５は、図１に示すＶ－Ｖ線における断面図である。図６は、図１に示すＶＩ－ＶＩ線における断面図である。なお、図５において、Ｆｒは、車両前後方向前方を示しており、Ｕｐは、車両上下方向上方を示している。 [First Embodiment]
FIG. 1 is a perspective view showing a vehicle body front part structure according to the first embodiment. FIG. 2 is a perspective view showing the vehicle body front part structure excluding the reinforcing member. 3 is a perspective view of the vehicle body front part structure shown in FIG. FIG. 4 is a perspective view showing a reinforcing member. FIG. 5 is a cross-sectional view taken along line VV shown in FIG. 6 is a cross-sectional view taken along the line VI-VI shown in FIG. In FIG. 5, Fr indicates the vehicle front-rear direction front, and Up indicates the vehicle vertical direction upper side.
　図１～図４に示すように、本実施形態に係る車体前部構造１は、ダッシュパネル４、フロアパネル５、フロアトンネル６及びタイヤハウス７を備え車幅方向全体に亘る車体前部２と、車体前部２の車両内側に配設される補強部材３と、を備えている。 As shown in FIGS. 1 to 4, the vehicle body front structure 1 according to this embodiment includes a dash panel 4, a floor panel 5, a floor tunnel 6 and a tire house 7, and a vehicle body front portion 2 extending over the entire vehicle width direction. And a reinforcing member 3 disposed inside the vehicle front portion 2.
　図１に示すように、ダッシュパネル４は、エンジンルームと車室内とを画成するパネルである。ダッシュパネル４は、車両上下方向上部に配置される垂直壁部４ａと、車両上下方向上部に配置されるトーボード４ｂと、を備えている。垂直壁部４ａは、車幅方向全体に亘って車両上下方向に延びている。トーボード４ｂは、垂直壁部４ａの下端縁から車両前後方向後方に傾斜しながら車両上下方向下方へ向けて延びている。このため、垂直壁部４ａとトーボード４ｂとの接続位置に、車幅方向に延びるダッシュ中央稜線Ｌ１が形成されている。なお、垂直壁部４ａ及びトーボード４ｂには、ケーブル類などが挿通される貫通孔が複数箇所に形成されている。 As shown in FIG. 1, the dash panel 4 is a panel that defines an engine room and a vehicle interior. The dash panel 4 includes a vertical wall portion 4a arranged at the upper part in the vehicle vertical direction and a toe board 4b arranged at the upper part in the vehicle vertical direction. The vertical wall portion 4a extends in the vehicle vertical direction over the entire vehicle width direction. The toe board 4b extends downward in the vehicle vertical direction while inclining backward from the lower end edge of the vertical wall portion 4a in the vehicle front-rear direction. For this reason, the dash center ridgeline L1 extended in a vehicle width direction is formed in the connection position of the vertical wall part 4a and the toe board 4b. The vertical wall 4a and the toe board 4b are formed with a plurality of through holes through which cables and the like are inserted.
　フロアパネル５は、車幅方向全体に亘って車両前後方向に延びている。すなわち、フロアパネル５は、トーボード４ｂの下端縁から車両前後方向後方へ向けて延びている。このため、トーボード４ｂとフロアパネル５との接続位置に、車幅方向に延びるダッシュ下部稜線Ｌ２が形成されている。 The floor panel 5 extends in the vehicle longitudinal direction over the entire vehicle width direction. That is, the floor panel 5 extends from the lower end edge of the toe board 4b toward the rear in the vehicle front-rear direction. For this reason, a dash lower ridge line L2 extending in the vehicle width direction is formed at a connection position between the toe board 4b and the floor panel 5.
　フロアトンネル６は、車幅方向中央部において車両前後方向に延びている。すなわち、フロアトンネル６は、トーボード４ｂ及びフロアパネル５の車幅方向中央部が、車両内側である車両上下方向上側に膨出した形状となっている。フロアトンネル６は、左右のフロアパネル５から車幅方向中心側に傾斜しながら車両上下方向上方へ向けて延びる一対の側壁部６ａと、一対の側壁部６ａの車両上下方向上端縁に接続される上壁部６ｂと、を備えている。このため、トーボード４ｂ及びフロアパネル５と側壁部６ａとの接続位置に、車両前後方向に延びる一対のトンネル下部稜線Ｌ３が形成されている。また、側壁部６ａと上壁部６ｂとの接続位置に、車両前後方向に延びる一対のトンネル上部稜線Ｌ４が形成されている。 The floor tunnel 6 extends in the vehicle front-rear direction at the center in the vehicle width direction. That is, the floor tunnel 6 has a shape in which the center part in the vehicle width direction of the toe board 4b and the floor panel 5 bulges upward in the vehicle vertical direction, which is the vehicle inner side. The floor tunnel 6 is connected to a pair of side wall portions 6a extending from the left and right floor panels 5 toward the vehicle width direction center side and extending upward in the vehicle vertical direction, and a vehicle vertical direction upper end edge of the pair of side wall portions 6a. And an upper wall portion 6b. For this reason, a pair of tunnel lower ridge lines L3 extending in the vehicle front-rear direction are formed at the connection positions of the toe board 4b and the floor panel 5 and the side wall 6a. A pair of tunnel upper ridge lines L4 extending in the vehicle front-rear direction are formed at the connection position between the side wall 6a and the upper wall 6b.
　タイヤハウス７は、車幅方向両端部に配置されて、車両のフロントタイヤ（不図示）を覆うように湾曲している。すなわち、タイヤハウス７は、垂直壁部４ａ、トーボード４ｂ及びフロアパネル５の車幅方向両端部が、車両内側に膨出した形状となっている。このため、垂直壁部４ａ、トーボード４ｂ及びフロアパネル５とタイヤハウス７との接続位置に、タイヤハウス７の形状に沿って湾曲したタイヤハウス稜線Ｌ５が形成されている。なお、タイヤハウス稜線Ｌ５は、ダッシュ中央稜線Ｌ１及びダッシュ下部稜線Ｌ２と交差する方向に形成されている。 The tire house 7 is disposed at both ends in the vehicle width direction and is curved so as to cover a front tire (not shown) of the vehicle. That is, the tire house 7 has a shape in which both ends of the vertical wall portion 4a, the toe board 4b, and the floor panel 5 bulge in the vehicle inner side. For this reason, a tire house ridge line L <b> 5 that is curved along the shape of the tire house 7 is formed at the connection position of the vertical wall portion 4 a, the toe board 4 b, the floor panel 5, and the tire house 7. The tire house ridgeline L5 is formed in a direction intersecting the dash center ridgeline L1 and the dash lower ridgeline L2.
　そして、ダッシュパネル４、フロアパネル５、フロアトンネル６及びタイヤハウス７は、１枚の鋼板により、又は複数枚の鋼板を溶接などで接合することにより、形成されている。 The dash panel 4, the floor panel 5, the floor tunnel 6 and the tire house 7 are formed by one steel plate or by joining a plurality of steel plates by welding or the like.
　図３に示すように、車体前部２の車両外側には、フロアトンネル６の車幅方向両側に配置されて車両前後方向に延びる一対のフロントサイドメンバ８が接合されている。 As shown in FIG. 3, a pair of front side members 8 disposed on both sides in the vehicle width direction of the floor tunnel 6 and extending in the vehicle front-rear direction are joined to the vehicle outer side of the vehicle body front portion 2.
　フロントサイドメンバ８は、エンジンルームにおいて車両前後方向に延びるフロントサイドレール９の車両前後方向後端に接合されている。フロントサイドメンバ８は、垂直壁部４ａ、トーボード４ｂ及びフロアパネル５の車両外側に接合されており、垂直壁部４ａ、トーボード４ｂ及びフロアパネル５に沿って略車両前後方向後方に延びている。フロントサイドメンバ８は、車幅方向両端部に車幅方向に延びる一対のフランジ部８ａと、この一対のフランジ部８ａの内側端縁から車両外側へ向けて延びる一対の側壁部８ｂと、一対の側壁部８ｂの車両外側端縁に接続される底壁部８ｃと、を備えている。このため、フランジ部８ａと側壁部８ｂとの接続位置に、フロントサイドメンバ８に沿って略車両前後方向に延びるフロントサイドメンバ稜線Ｌ６が形成されている。 The front side member 8 is joined to the rear end in the vehicle longitudinal direction of the front side rail 9 extending in the vehicle longitudinal direction in the engine room. The front side member 8 is joined to the vehicle outside of the vertical wall portion 4a, the toe board 4b, and the floor panel 5, and extends substantially rearward in the vehicle front-rear direction along the vertical wall portion 4a, the toe board 4b, and the floor panel 5. The front side member 8 includes a pair of flange portions 8a extending in the vehicle width direction at both ends in the vehicle width direction, a pair of side wall portions 8b extending from the inner edge of the pair of flange portions 8a toward the vehicle outer side, And a bottom wall portion 8c connected to the vehicle outer edge of the side wall portion 8b. For this reason, a front side member ridgeline L6 extending in the vehicle front-rear direction along the front side member 8 is formed at a connection position between the flange portion 8a and the side wall portion 8b.
　ところで、前突時などに生じる車両前後方向の衝突荷重は、フロントサイドレール９及びフロントサイドメンバ８から垂直壁部４ａに入力される。そこで、垂直壁部４ａには、フロントサイドメンバ８が接合される位置に、車幅方向に延びるダッシュクロスビード１０が形成されている。 Incidentally, the collision load in the vehicle front-rear direction generated at the time of a front collision or the like is input from the front side rail 9 and the front side member 8 to the vertical wall 4a. Therefore, a dash cross bead 10 extending in the vehicle width direction is formed on the vertical wall portion 4a at a position where the front side member 8 is joined.
　ダッシュクロスビード１０は、垂直壁部４ａの一部が車両内側又は車両外側に膨出した形状となっている。このため、垂直壁部４ａとダッシュクロスビード１０との接合位置に、ダッシュクロスビード１０を囲う細長い環状のクロスビード稜線Ｌ７が形成されている。 The dash cross bead 10 has a shape in which a part of the vertical wall portion 4a bulges inside or outside the vehicle. For this reason, an elongated annular cross-bead ridge line L7 that surrounds the dash cross bead 10 is formed at the joining position of the vertical wall portion 4a and the dash cross bead 10.
　図１に示すように、補強部材３は、車体前部２を補強する部材である。補強部材３は、ダッシュパネル４（垂直壁部４ａ及びトーボード４ｂ）、フロアパネル５、フロアトンネル６（側壁部６ａ及び上壁部６ｂ）及びタイヤハウス７を跨いで、車幅方向全体に亘ってダッシュパネル４（垂直壁部４ａ及びトーボード４ｂ）、フロアパネル５、フロアトンネル６（側壁部６ａ及び上壁部６ｂ）及びタイヤハウス７の車両内側に配設されている。補強部材３は、１枚の鋼板を屈曲することにより形成されている。車体前部２の補強という観点からは、補強部材３の素材は、超高強度材料（超ハイテン材）であることが好ましい。そして、補強部材３は、ダッシュパネル４、フロアパネル５、フロアトンネル６及びタイヤハウス７と、スポット溶接などにより接合されている。 As shown in FIG. 1, the reinforcing member 3 is a member that reinforces the vehicle body front portion 2. The reinforcing member 3 straddles the dash panel 4 (the vertical wall portion 4a and the toe board 4b), the floor panel 5, the floor tunnel 6 (the side wall portion 6a and the upper wall portion 6b), and the tire house 7 over the entire vehicle width direction. The dash panel 4 (the vertical wall portion 4a and the toe board 4b), the floor panel 5, the floor tunnel 6 (the side wall portion 6a and the upper wall portion 6b), and the tire house 7 are arranged on the vehicle inner side. The reinforcing member 3 is formed by bending a single steel plate. From the viewpoint of reinforcing the vehicle body front portion 2, the material of the reinforcing member 3 is preferably an ultra-high strength material (ultra-high tensile material). The reinforcing member 3 is joined to the dash panel 4, the floor panel 5, the floor tunnel 6, and the tire house 7 by spot welding or the like.
　図４に示すように、補強部材３は、ダッシュパネル４、フロアパネル５、フロアトンネル６及びタイヤハウス７と略同じ形状に形成されており、ダッシュパネル４に対応するダッシュパネル対応補強板部１１と、フロアパネル５に対応するフロアパネル対応補強板部１２と、フロアトンネル６に対応するフロアトンネル対応補強板部１３と、タイヤハウス７に対応するタイヤハウス対応補強板部１４と、を備えている。更に、ダッシュパネル対応補強板部１１は、垂直壁部４ａに対応する垂直壁部対応補強板部１１ａと、トーボード４ｂに対応するトーボード対応補強板部１１ｂと、を備えている。また、フロアトンネル対応補強板部１３は、フロアトンネル６の側壁部６ａに対応するフロアトンネル側壁対応補強板部１３ａと、フロアトンネル６の上壁部６ｂに対応するフロアトンネル上壁対応補強板部１３ｂと、を備えている。 As shown in FIG. 4, the reinforcing member 3 is formed in substantially the same shape as the dash panel 4, the floor panel 5, the floor tunnel 6 and the tire house 7, and the dash panel corresponding reinforcing plate portion 11 corresponding to the dash panel 4. A floor panel corresponding reinforcing plate portion 12 corresponding to the floor panel 5, a floor tunnel corresponding reinforcing plate portion 13 corresponding to the floor tunnel 6, and a tire house corresponding reinforcing plate portion 14 corresponding to the tire house 7. Yes. Further, the dash panel corresponding reinforcing plate portion 11 includes a vertical wall corresponding reinforcing plate portion 11a corresponding to the vertical wall portion 4a and a toe board corresponding reinforcing plate portion 11b corresponding to the toe board 4b. In addition, the reinforcing plate portion 13 corresponding to the floor tunnel includes the reinforcing plate portion 13a corresponding to the side wall portion 6a of the floor tunnel 6 and the reinforcing plate portion corresponding to the upper wall 6a corresponding to the upper wall portion 6b of the floor tunnel 6. 13b.
　補強部材３には、補強部材３の一部を車室内側に膨出させた複数のビードが形成されている。具体的に説明すると、補強部材３には、トンネル下部ビード２１と、トンネル上部ビード２２と、タイヤハウスビード２３と、フロントサイドメンバビード２４と、クロスビード２５と、薄ビード２６と、が形成されている。 The reinforcing member 3 is formed with a plurality of beads in which a part of the reinforcing member 3 is expanded toward the vehicle interior side. More specifically, the reinforcing member 3 is formed with a tunnel lower bead 21, a tunnel upper bead 22, a tire house bead 23, a front side member bead 24, a cross bead 25, and a thin bead 26. ing.
　トンネル下部ビード２１は、トンネル下部稜線Ｌ３（図２参照）に対応する位置に形成されるビードであり、トンネル下部稜線Ｌ３に沿って車両前後方向に延びている。トンネル下部ビード２１は、フロアパネル対応補強板部１２とフロアトンネル側壁対応補強板部１３ａとの接続部分を車両内側に膨出させることにより形成されている。このため、フロアパネル５及びフロアトンネル６の側壁部６ａとトンネル下部ビード２１とにより、車両前後方向に延設される閉断面が形成されている（図１及び図６参照）。なお、この閉断面は、略矩形であることが好ましいが、所望の強度を確保することができれば、必ずしも略矩形でなくてもよい。 The tunnel lower bead 21 is a bead formed at a position corresponding to the tunnel lower ridge line L3 (see FIG. 2), and extends in the vehicle front-rear direction along the tunnel lower ridge line L3. The tunnel lower bead 21 is formed by bulging the connecting portion between the floor panel corresponding reinforcing plate portion 12 and the floor tunnel side wall corresponding reinforcing plate portion 13a toward the inside of the vehicle. Therefore, a closed cross section extending in the vehicle front-rear direction is formed by the floor panel 5 and the side wall portion 6a of the floor tunnel 6 and the tunnel lower bead 21 (see FIGS. 1 and 6). The closed cross section is preferably substantially rectangular, but may not necessarily be substantially rectangular as long as a desired strength can be ensured.
　トンネル上部ビード２２は、トンネル上部稜線Ｌ４（図２参照）に対応する位置に形成されるビードであり、トンネル上部稜線Ｌ４に沿って車両前後方向に延びている。トンネル上部ビード２２は、フロアトンネル側壁対応補強板部１３ａとフロアトンネル上壁対応補強板部１３ｂとの接続部分を車両内側に膨出させることにより形成されている。このため、フロアトンネル６の側壁部６ａ及び上壁部６ｂとトンネル上部ビード２２とにより、車両前後方向に延設される閉断面が形成されている（図１及び図６参照）。なお、この閉断面は、略矩形であることが好ましいが、所望の強度を確保することができれば、必ずしも略矩形でなくてもよい。 The tunnel upper bead 22 is a bead formed at a position corresponding to the tunnel upper ridge line L4 (see FIG. 2), and extends in the vehicle front-rear direction along the tunnel upper ridge line L4. The tunnel upper bead 22 is formed by bulging a connecting portion between the floor tunnel side wall corresponding reinforcing plate portion 13a and the floor tunnel upper wall corresponding reinforcing plate portion 13b to the inside of the vehicle. Therefore, a closed cross section extending in the vehicle front-rear direction is formed by the side wall portion 6a and the upper wall portion 6b of the floor tunnel 6 and the tunnel upper bead 22 (see FIGS. 1 and 6). The closed cross section is preferably substantially rectangular, but may not necessarily be substantially rectangular as long as a desired strength can be ensured.
　タイヤハウスビード２３は、タイヤハウス対応補強板部１４に形成されるビードであり、タイヤハウス対応補強板部１４を車両内側に膨出させることにより形成されている。このため、タイヤハウス７とタイヤハウスビード２３とにより、閉断面が形成されている（図１参照）。なお、この閉断面は、略矩形であることが好ましいが、所望の強度を確保することができれば、必ずしも略矩形でなくてもよい。 The tire house bead 23 is a bead formed on the tire house-compatible reinforcing plate portion 14 and is formed by causing the tire house-compatible reinforcing plate portion 14 to bulge inside the vehicle. For this reason, a closed section is formed by the tire house 7 and the tire house bead 23 (see FIG. 1). The closed cross section is preferably substantially rectangular, but may not necessarily be substantially rectangular as long as a desired strength can be ensured.
　ここで、タイヤハウスビード２３の形状について詳しく説明する。タイヤハウスビード２３は、タイヤハウス７に囲まれるタイヤ（不図示）の回転軸を中心とした放射状に延びている。なお、タイヤハウスビード２３は、車幅方向に延びるダッシュ中央稜線Ｌ１（図２参照）と交差する方向に延びていればよく、必ずしも、タイヤハウス７に囲まれるタイヤの回転軸を中心とした放射状に延びていなくてもよい。そして、タイヤハウスビード２３は、タイヤハウス対応補強板部１４の車幅方向両端縁から、垂直壁部対応補強板部１１ａ、トーボード対応補強板部１１ｂ及びフロアパネル対応補強板部１２とタイヤハウス対応補強板部１４との接続位置に形成されるタイヤハウス対応補強板部稜線Ｌ１５に向けて延びている。なお、タイヤハウスビード２３は、このタイヤハウス対応補強板部稜線Ｌ１５まで延びていてもよく、このタイヤハウス対応補強板部稜線Ｌ１５の付近までしか延びていなくてもよい。 Here, the shape of the tire house bead 23 will be described in detail. The tire house beads 23 extend radially around the rotation axis of a tire (not shown) surrounded by the tire house 7. The tire house bead 23 only needs to extend in a direction intersecting with the dash center ridge line L1 (see FIG. 2) extending in the vehicle width direction, and is not necessarily radial with the rotation axis of the tire surrounded by the tire house 7 as the center. It does not have to extend. The tire house bead 23 corresponds to the tire house corresponding reinforcing plate portion 11a, the toe board corresponding reinforcing plate portion 11b and the floor panel corresponding reinforcing plate portion 12 from the both ends of the tire house corresponding reinforcing plate portion 14 in the vehicle width direction. It extends toward a tire house-compatible reinforcing plate portion ridge line L15 formed at a connection position with the reinforcing plate portion 14. The tire house bead 23 may extend to the tire house-compatible reinforcing plate portion ridge line L15, or may extend only to the vicinity of the tire house-compatible reinforcing plate portion ridge line L15.
　フロントサイドメンバビード２４は、フロントサイドメンバ８が延設される垂直壁部４ａ、トーボード４ｂ及びフロアパネル５の部位に沿って形成されるビードであり、フロントサイドメンバ８に沿って略車両前後方向に延びている。フロントサイドメンバビード２４は、フロントサイドメンバ８と略同じ幅に形成されており、垂直壁部対応補強板部１１ａ、トーボード対応補強板部１１ｂ及びフロアパネル対応補強板部１２を車両内側に膨出させることにより形成されている。このため、垂直壁部４ａ、トーボード４ｂ及びフロアパネル５と、フロントサイドメンバ８と、フロントサイドメンバビード２４とにより、垂直壁部４ａ、トーボード４ｂ及びフロアパネル５を挟んだ二重の閉断面が形成されている（図１及び図６参照）。なお、この閉断面は、略矩形であることが好ましいが、所望の強度を確保することができれば、必ずしも略矩形でなくてもよい。 The front side member bead 24 is a bead formed along the vertical wall 4a, the toe board 4b, and the floor panel 5 where the front side member 8 is extended. It extends to. The front side member bead 24 is formed to have substantially the same width as the front side member 8, and the vertical wall corresponding reinforcing plate portion 11a, the toe board corresponding reinforcing plate portion 11b, and the floor panel corresponding reinforcing plate portion 12 bulge to the inside of the vehicle. It is formed by letting. Therefore, a double closed cross section sandwiching the vertical wall 4a, toeboard 4b and floor panel 5 by the vertical wall 4a, toeboard 4b and floor panel 5, the front side member 8 and the front side member bead 24 has a double closed cross section. It is formed (see FIGS. 1 and 6). The closed cross section is preferably substantially rectangular, but may not necessarily be substantially rectangular as long as a desired strength can be ensured.
　クロスビード２５は、ダッシュクロスビード１０に対応する位置に形成されるビードであり、ダッシュクロスビード１０に沿って車幅方向に延びている。クロスビード２５は、ダッシュクロスビード１０と略同じ幅に形成されており、垂直壁部対応補強板部１１ａを車両内側に膨出させることにより形成されている。このため、ダッシュクロスビード１０とクロスビード２５とにより、閉断面が形成されている（図１及び図５参照）。なお、この閉断面は、略矩形であることが好ましいが、所望の強度を確保することができれば、必ずしも略矩形でなくてもよい。 The cross bead 25 is a bead formed at a position corresponding to the dash cross bead 10 and extends along the dash cross bead 10 in the vehicle width direction. The cross bead 25 is formed to have substantially the same width as the dash cross bead 10 and is formed by causing the vertical wall portion corresponding reinforcing plate portion 11a to bulge to the vehicle inner side. Therefore, a closed cross section is formed by the dash cross bead 10 and the cross bead 25 (see FIGS. 1 and 5). The closed cross section is preferably substantially rectangular, but may not necessarily be substantially rectangular as long as a desired strength can be ensured.
　薄ビード２６は、ダッシュパネル対応補強板部１１、フロアパネル対応補強板部１２及びフロアトンネル対応補強板部１３を車両内側に膨出させることにより形成されている。このため、ダッシュパネル対応補強板部１１、フロアパネル対応補強板部１２及びフロアトンネル対応補強板部１３と薄ビード２６とにより、閉断面が形成されている（図１、図５及び図６参照）。なお、この閉断面は、略矩形であることが好ましいが、所望の強度を確保することができれば、必ずしも略矩形でなくてもよい。 The thin bead 26 is formed by bulging the dash panel corresponding reinforcing plate portion 11, the floor panel corresponding reinforcing plate portion 12 and the floor tunnel corresponding reinforcing plate portion 13 to the inside of the vehicle. For this reason, a closed cross section is formed by the reinforcing plate portion 11 corresponding to the dash panel, the reinforcing plate portion 12 corresponding to the floor panel, the reinforcing plate portion 13 corresponding to the floor tunnel, and the thin bead 26 (see FIGS. 1, 5 and 6). ). The closed cross section is preferably substantially rectangular, but may not necessarily be substantially rectangular as long as a desired strength can be ensured.
　ダッシュパネル対応補強板部１１、フロアパネル対応補強板部１２及びフロアトンネル対応補強板部１３に対する薄ビード２６の膨出高さは、特に限定されるものではないが、車室内が狭くなるのを抑制しつつ補強性能を向上させる観点からは、補強部材３の板厚に対して３～５倍の寸法であることが好ましい。薄ビード２６の形状は、特に限定されるものではないが、製造容易性の観点からは、矩形であることが好ましい。薄ビード２６の間隔は、特に限定されるものではないが、車体前部２に対する補強部材３の接合をスポット溶接で行う場合は、スポット溶接を行う位置と干渉しないように、５０～１００ｍｍ程度に設定することが好ましい。また、薄ビード２６は、トンネル下部ビード２１、トンネル上部ビード２２、タイヤハウスビード２３、フロントサイドメンバビード２４及びクロスビード２５と干渉しない範囲で、ダッシュパネル対応補強板部１１、フロアパネル対応補強板部１２及びフロアトンネル対応補強板部１３の全面に形成することが好ましい。 The bulge height of the thin bead 26 with respect to the dash panel reinforcing plate portion 11, the floor panel corresponding reinforcing plate portion 12 and the floor tunnel corresponding reinforcing plate portion 13 is not particularly limited. From the viewpoint of improving the reinforcing performance while suppressing, the size is preferably 3 to 5 times the plate thickness of the reinforcing member 3. The shape of the thin bead 26 is not particularly limited, but is preferably rectangular from the viewpoint of ease of manufacture. The interval between the thin beads 26 is not particularly limited. However, when the reinforcing member 3 is joined to the vehicle body front portion 2 by spot welding, the distance between the thin beads 26 is about 50 to 100 mm so as not to interfere with the spot welding position. It is preferable to set. Further, the thin bead 26 is within the range not interfering with the tunnel lower bead 21, the tunnel upper bead 22, the tire house bead 23, the front side member bead 24 and the cross bead 25, and the dash panel corresponding reinforcing plate 11 and the floor panel corresponding reinforcing plate. It is preferable to form on the whole surface of the part 12 and the reinforcement board part 13 corresponding to a floor tunnel.
　そして、このように構成される補強部材３は、トンネル下部ビード２１、トンネル上部ビード２２、タイヤハウスビード２３、フロントサイドメンバビード２４、クロスビード２５及び薄ビード２６が形成されていない位置において、ダッシュパネル４、フロアパネル５、フロアトンネル６及びタイヤハウス７の車両内側に接合されている。 Further, the reinforcing member 3 configured in this way has a dash at a position where the tunnel lower bead 21, the tunnel upper bead 22, the tire house bead 23, the front side member bead 24, the cross bead 25 and the thin bead 26 are not formed. The panel 4, the floor panel 5, the floor tunnel 6 and the tire house 7 are joined to the inside of the vehicle.
　以上説明したように、本実施形態に係る車体前部構造１によれば、ダッシュパネル４、フロアパネル５、フロアトンネル６及びタイヤハウス７を跨いで、車幅方向全体に亘る補強部材３がダッシュパネル４、フロアパネル５、フロアトンネル６及びタイヤハウス７に配設されているため、１枚の補強部材で、ダッシュパネル４、フロアパネル５、フロアトンネル６及びタイヤハウス７の補強を行うことができる。 As described above, according to the vehicle body front structure 1 according to the present embodiment, the reinforcing member 3 across the dash panel 4, the floor panel 5, the floor tunnel 6 and the tire house 7 extends across the entire vehicle width direction. Since the panel 4, the floor panel 5, the floor tunnel 6 and the tire house 7 are disposed, the dash panel 4, the floor panel 5, the floor tunnel 6 and the tire house 7 can be reinforced with a single reinforcing member. it can.
　しかも、補強部材３に形成したビードにより、ダッシュパネル４、フロアパネル５、フロアトンネル６及びタイヤハウス７との間で閉断面が形成される。このため、簡素な構造としつつ、車体前部２の強度を確保して衝突性能を向上することができる。 Moreover, a closed cross section is formed between the dash panel 4, the floor panel 5, the floor tunnel 6, and the tire house 7 by the beads formed in the reinforcing member 3. For this reason, it is possible to secure the strength of the vehicle body front portion 2 and improve the collision performance while using a simple structure.
　また、トンネル下部稜線Ｌ３に対応する位置に形成されるトンネル下部ビード２１は、フロアパネル５及びフロアトンネル６の側壁部６ａにより、車両前後方向に延設される閉断面が形成される。このため、車体前部２の強度を確保して前突性能を向上させることができる。 Further, the tunnel lower bead 21 formed at a position corresponding to the tunnel lower ridge line L3 has a closed cross section extending in the vehicle front-rear direction by the floor panel 5 and the side wall portion 6a of the floor tunnel 6. For this reason, the front collision performance can be improved by securing the strength of the vehicle body front portion 2.
　また、トンネル上部稜線Ｌ４に対応する位置に形成されるトンネル上部ビード２２と、フロアトンネル６の側壁部６ａ及び上壁部６ｂとにより、車両前後方向に延設される閉断面が形成されるため、車体前部２の強度を確保して前突性能を向上させることができる。 Further, the tunnel upper bead 22 formed at a position corresponding to the tunnel upper ridge line L4 and the side wall 6a and the upper wall 6b of the floor tunnel 6 form a closed cross section extending in the vehicle front-rear direction. The strength of the vehicle body front part 2 can be secured and the front collision performance can be improved.
　また、フロントサイドメンバ８に対応する位置に形成されるフロントサイドメンバビード２４と、垂直壁部４ａ、トーボード４ｂ及びフロアパネル５と、フロントサイドメンバ８とにより、垂直壁部４ａ、トーボード４ｂ及びフロアパネル５を挟んだ二重の閉断面が形成される。このため、車両前後方向の座屈強度が高まり、前突性能を更に向上させることができる。 Further, the front side member bead 24 formed at a position corresponding to the front side member 8, the vertical wall portion 4 a, the toe board 4 b and the floor panel 5, and the front side member 8, the vertical wall portion 4 a, the toe board 4 b and the floor A double closed section sandwiching the panel 5 is formed. For this reason, the buckling strength in the vehicle front-rear direction is increased, and the front collision performance can be further improved.
［第２の実施形態］
　図７は、第２の実施形態に係る車体前部構造に用いる補強部材を示す斜視図である。 [Second Embodiment]
FIG. 7 is a perspective view showing a reinforcing member used in the vehicle body front structure according to the second embodiment.
　図７に示すように、第２の実施形態に係る車体前部構造３１は、基本的に第１の実施形態に係る車体前部構造１と同様であり、補強部材の形状のみが相違する。このため、以下の説明では、第１の実施形態と相違する部分のみを説明し、第１の実施形態と同じ部分の説明を省略する。 7, the vehicle body front structure 31 according to the second embodiment is basically the same as the vehicle body front structure 1 according to the first embodiment, and only the shape of the reinforcing member is different. For this reason, in the following description, only the part different from the first embodiment will be described, and the description of the same part as the first embodiment will be omitted.
　車体前部構造３１に用いられる補強部材３２は、第１の実施形態の補強部材３と同様に、ダッシュパネル４（垂直壁部４ａ及びトーボード４ｂ）、フロアパネル５、フロアトンネル６（側壁部６ａ及び上壁部６ｂ）及びタイヤハウス７を跨いで、車幅方向全体に亘ってダッシュパネル４（垂直壁部４ａ及びトーボード４ｂ）、フロアパネル５、フロアトンネル６（側壁部６ａ及び上壁部６ｂ）及びタイヤハウス７の車両内側に配設されている。補強部材３２は、ダッシュパネル４、フロアパネル５、フロアトンネル６及びタイヤハウス７と略同じ形状に形成されており、ダッシュパネル４に対応するダッシュパネル対応補強板部４１と、フロアパネル５に対応するフロアパネル対応補強板部４２と、フロアトンネル６に対応するフロアトンネル対応補強板部４３と、タイヤハウス７に対応するタイヤハウス対応補強板部４４と、を備えている。更に、ダッシュパネル対応補強板部４１は、垂直壁部４ａに対応する垂直壁部対応補強板部４１ａと、トーボード４ｂに対応するトーボード対応補強板部４１ｂと、を備えている。また、フロアトンネル対応補強板部４３は、フロアトンネル６の側壁部６ａに対応するフロアトンネル側壁対応補強板部４３ａと、フロアトンネル６の上壁部６ｂに対応するフロアトンネル上壁対応補強板部４３ｂと、を備えている。なお、補強部材３２は、ダッシュパネル４、フロアパネル５、フロアトンネル６及びタイヤハウス７と、スポット溶接などにより接合されている。 Similar to the reinforcing member 3 of the first embodiment, the reinforcing member 32 used in the vehicle body front structure 31 includes a dash panel 4 (vertical wall portion 4a and toe board 4b), a floor panel 5, and a floor tunnel 6 (side wall portion 6a). And dash panel 4 (vertical wall portion 4a and toe board 4b), floor panel 5, floor tunnel 6 (side wall portion 6a and upper wall portion 6b) across the entire vehicle width direction across the upper wall portion 6b) and the tire house 7. ) And the inside of the tire house 7 in the vehicle. The reinforcing member 32 is formed in substantially the same shape as the dash panel 4, the floor panel 5, the floor tunnel 6, and the tire house 7, and corresponds to the dash panel corresponding reinforcing plate portion 41 corresponding to the dash panel 4 and the floor panel 5. The floor panel corresponding reinforcing plate portion 42, the floor tunnel corresponding reinforcing plate portion 43 corresponding to the floor tunnel 6, and the tire house corresponding reinforcing plate portion 44 corresponding to the tire house 7 are provided. Furthermore, the dash panel corresponding reinforcing plate portion 41 includes a vertical wall portion corresponding reinforcing plate portion 41a corresponding to the vertical wall portion 4a and a toe board corresponding reinforcing plate portion 41b corresponding to the toe board 4b. The reinforcing plate portion 43 corresponding to the floor tunnel includes a reinforcing plate portion 43a corresponding to the side wall portion 6a of the floor tunnel 6 and a reinforcing plate portion corresponding to the floor tunnel upper wall corresponding to the upper wall portion 6b of the floor tunnel 6. 43b. The reinforcing member 32 is joined to the dash panel 4, the floor panel 5, the floor tunnel 6, and the tire house 7 by spot welding or the like.
　補強部材３２には、第１の実施形態の補強部材３と同様に、トンネル下部ビード２１と、トンネル上部ビード２２と、タイヤハウスビード２３と、フロントサイドメンバビード２４と、クロスビード２５と、が形成されている。なお、補強部材３２には、第１の実施形態の補強部材３に形成される薄ビード２６が形成されていない。 Similar to the reinforcing member 3 of the first embodiment, the reinforcing member 32 includes a tunnel lower bead 21, a tunnel upper bead 22, a tire house bead 23, a front side member bead 24, and a cross bead 25. Is formed. The reinforcing member 32 is not formed with the thin bead 26 formed in the reinforcing member 3 of the first embodiment.
　そして、ダッシュパネル対応補強板部４１（垂直壁部対応補強板部４１ａ及びトーボード対応補強板部４１ｂ）、フロアパネル対応補強板部４２及びフロアトンネル対応補強板部４３（フロアトンネル側壁対応補強板部４３ａ及びフロアトンネル上壁対応補強板部４３ｂ）に、複数の軽量化用穴４５が形成されている。なお、タイヤハウス対応補強板部４４には、軽量化用穴４５が形成されていない。また、フロントサイドメンバビード２４及びクロスビード２５には、複数の軽量化用穴４６が形成されている。 Then, the dash panel corresponding reinforcing plate 41 (the vertical wall corresponding reinforcing plate 41a and the toeboard corresponding reinforcing plate 41b), the floor panel corresponding reinforcing plate 42 and the floor tunnel corresponding reinforcing plate 43 (the floor tunnel side wall corresponding reinforcing plate). 43a and a floor tunnel upper wall corresponding reinforcing plate 43b) are formed with a plurality of lightening holes 45. Note that the weight reduction hole 45 is not formed in the tire house-compatible reinforcing plate portion 44. The front side member bead 24 and the cross bead 25 are formed with a plurality of lightening holes 46.
　軽量化用穴４５及び軽量化用穴４６は、補強部材３２の軽量化を図るものであり、補強部材３２を肉抜きすることにより形成されている。この軽量化用穴４５及び軽量化用穴４６の位置、形状、大きさなどは、補強部材３２の強度を保持できる範囲で、適宜設定することができる。 The lightening hole 45 and the lightening hole 46 are intended to reduce the weight of the reinforcing member 32, and are formed by removing the reinforcing member 32. The position, shape, size, and the like of the lightening hole 45 and the lightening hole 46 can be set as appropriate as long as the strength of the reinforcing member 32 can be maintained.
　そして、このように構成される補強部材３２は、トンネル下部ビード２１、トンネル上部ビード２２、タイヤハウスビード２３、フロントサイドメンバビード２４、クロスビード２５、軽量化用穴４５及び軽量化用穴４６が形成されていない位置において、ダッシュパネル４、フロアパネル５、フロアトンネル６及びタイヤハウス７の車両内側に接合されている。 The reinforcing member 32 configured as described above includes a tunnel lower bead 21, a tunnel upper bead 22, a tire house bead 23, a front side member bead 24, a cross bead 25, a lightening hole 45, and a lightening hole 46. At a position where it is not formed, the dash panel 4, the floor panel 5, the floor tunnel 6 and the tire house 7 are joined to the inside of the vehicle.
　以上説明したように、本実施形態に係る車体前部構造３１によれば、補強部材３２に軽量化用穴４５及び軽量化用穴４６を形成することで、軽量化を図りつつ、車体前部の強度を確保して衝突性能を向上することができる。 As described above, according to the vehicle body front part structure 31 according to the present embodiment, the weight reduction hole 45 and the lightening hole 46 are formed in the reinforcing member 32, thereby reducing the weight of the vehicle body front part. It is possible to improve the collision performance by securing the strength.
［第３の実施形態］
　図８は、第３の実施形態に係る車体前部構造に用いる補強部材を示す斜視図である。 [Third Embodiment]
FIG. 8 is a perspective view showing a reinforcing member used in the vehicle body front structure according to the third embodiment.
　図８に示すように、第３の実施形態に係る車体前部構造５１は、基本的に第１の実施形態に係る車体前部構造１と同様であり、補強部材の形状のみが相違する。このため、以下の説明では、第１の実施形態と相違する部分のみを説明し、第１の実施形態と同じ部分の説明を省略する。 As shown in FIG. 8, the vehicle body front structure 51 according to the third embodiment is basically the same as the vehicle body front structure 1 according to the first embodiment, and only the shape of the reinforcing member is different. For this reason, in the following description, only the part different from the first embodiment will be described, and the description of the same part as the first embodiment will be omitted.
　車体前部構造５１に用いられる補強部材５２は、第１の実施形態の補強部材３と同様に、ダッシュパネル４（垂直壁部４ａ及びトーボード４ｂ）、フロアパネル５、フロアトンネル６（側壁部６ａ及び上壁部６ｂ）及びタイヤハウス７を跨いで、車幅方向全体に亘ってダッシュパネル４（垂直壁部４ａ及びトーボード４ｂ）、フロアパネル５、フロアトンネル６（側壁部６ａ及び上壁部６ｂ）及びタイヤハウス７の車両内側に配設されている。補強部材５２は、ダッシュパネル４、フロアパネル５、フロアトンネル６及びタイヤハウス７と略同じ形状に形成されており、ダッシュパネル４に対応するダッシュパネル対応補強板部６１と、フロアパネル５に対応するフロアパネル対応補強板部６２と、フロアトンネル６に対応するフロアトンネル対応補強板部６３と、タイヤハウス７に対応するタイヤハウス対応補強板部６４と、を備えている。更に、ダッシュパネル対応補強板部６１は、垂直壁部４ａに対応する垂直壁部対応補強板部６１ａと、トーボード４ｂに対応するトーボード対応補強板部６１ｂと、を備えている。また、フロアトンネル対応補強板部６３は、フロアトンネル６の側壁部６ａに対応するフロアトンネル側壁対応補強板部６３ａと、フロアトンネル６の上壁部６ｂに対応するフロアトンネル上壁対応補強板部６３ｂと、を備えている。なお、補強部材５２は、ダッシュパネル４、フロアパネル５、フロアトンネル６及びタイヤハウス７と、スポット溶接などにより接合されている。 Similar to the reinforcing member 3 of the first embodiment, the reinforcing member 52 used in the vehicle body front structure 51 includes a dash panel 4 (vertical wall portion 4a and toe board 4b), a floor panel 5, and a floor tunnel 6 (side wall portion 6a). And dash panel 4 (vertical wall portion 4a and toe board 4b), floor panel 5, floor tunnel 6 (side wall portion 6a and upper wall portion 6b) across the entire vehicle width direction across the upper wall portion 6b) and the tire house 7. ) And the inside of the tire house 7 in the vehicle. The reinforcing member 52 is formed in substantially the same shape as the dash panel 4, the floor panel 5, the floor tunnel 6 and the tire house 7, and corresponds to the dash panel corresponding reinforcing plate portion 61 corresponding to the dash panel 4 and the floor panel 5. The floor panel corresponding reinforcing plate portion 62, the floor tunnel corresponding reinforcing plate portion 63 corresponding to the floor tunnel 6, and the tire house corresponding reinforcing plate portion 64 corresponding to the tire house 7 are provided. Furthermore, the dash panel corresponding reinforcing plate portion 61 includes a vertical wall corresponding reinforcing plate portion 61a corresponding to the vertical wall portion 4a and a toe board corresponding reinforcing plate portion 61b corresponding to the toe board 4b. In addition, the reinforcing plate portion 63 corresponding to the floor tunnel includes a reinforcing plate portion 63a corresponding to the side wall portion 6a of the floor tunnel 6 and a reinforcing plate portion corresponding to the floor tunnel upper wall corresponding to the upper wall portion 6b of the floor tunnel 6. 63b. The reinforcing member 52 is joined to the dash panel 4, the floor panel 5, the floor tunnel 6, and the tire house 7 by spot welding or the like.
　補強部材５２には、補強部材５２の一部を車室内側に膨出させた複数のビードが形成されている。具体的に説明すると、補強部材５２には、ダッシュ中央稜線ビード７１と、ダッシュ下部稜線ビード７２と、トンネル下部稜線ビード７３と、トンネル上部稜線ビード７４と、タイヤハウス稜線ビード７５と、フロントサイドメンバ稜線ビード７６と、クロスビード稜線ビード７７と、が形成されている。なお、補強部材５２には、第１の実施形態の補強部材３に形成される薄ビード２６が形成されていない。 The reinforcing member 52 is formed with a plurality of beads in which a part of the reinforcing member 52 is bulged toward the vehicle interior side. More specifically, the reinforcing member 52 includes a dash center ridge bead 71, a dash lower ridge bead 72, a tunnel lower ridge bead 73, a tunnel upper ridge bead 74, a tire house ridge bead 75, and a front side member. A ridge line bead 76 and a cross bead ridge line bead 77 are formed. In addition, the thin bead 26 formed in the reinforcing member 3 of the first embodiment is not formed on the reinforcing member 52.
　ダッシュ中央稜線ビード７１は、ダッシュ中央稜線Ｌ１（図２参照）に対応する位置に形成されるビードであり、ダッシュ中央稜線Ｌ１に沿って車幅方向に延びている。なお、ダッシュ中央稜線ビード７１は、ダッシュ中央稜線Ｌ１の全長に亘って形成されてもよいが、ダッシュ中央稜線Ｌ１の一部にのみ形成されてもよく、ダッシュ中央稜線Ｌ１に沿って複数形成されてもよい。ダッシュ中央稜線ビード７１は、垂直壁部対応補強板部６１ａとトーボード対応補強板部６１ｂとの接続部分を車両内側に膨出させることにより形成されている。このため、垂直壁部４ａ及びトーボード４ｂとダッシュ中央稜線ビード７１とにより、車幅方向に延設される閉断面が形成されている。なお、この閉断面は、略矩形であることが好ましいが、所望の強度を確保することができれば、必ずしも略矩形でなくてもよい。 The dash center ridge line bead 71 is a bead formed at a position corresponding to the dash center ridge line L1 (see FIG. 2), and extends in the vehicle width direction along the dash center ridge line L1. The dash center ridge line bead 71 may be formed over the entire length of the dash center ridge line L1, but may be formed only on a part of the dash center ridge line L1, and a plurality of the dash center ridge line beads 71 are formed along the dash center ridge line L1. May be. The dash center ridge bead 71 is formed by bulging the connecting portion between the vertical wall portion corresponding reinforcing plate portion 61a and the toe board corresponding reinforcing plate portion 61b to the inside of the vehicle. For this reason, a closed section extending in the vehicle width direction is formed by the vertical wall portion 4a and the toe board 4b and the dash center ridge line bead 71. The closed cross section is preferably substantially rectangular, but may not necessarily be substantially rectangular as long as a desired strength can be ensured.
　ダッシュ下部稜線ビード７２は、ダッシュ下部稜線Ｌ２（図２参照）に対応する位置に形成されるビードであり、ダッシュ下部稜線Ｌ２に沿って車幅方向に延びている。なお、ダッシュ下部稜線ビード７２は、ダッシュ下部稜線Ｌ２の全長に亘って形成されてもよいが、ダッシュ下部稜線Ｌ２の一部にのみ形成されてもよく、ダッシュ下部稜線Ｌ２に沿って複数形成されてもよい。ダッシュ下部稜線ビード７２は、トーボード対応補強板部６１ｂとフロアパネル対応補強板部６２との接続部分を車両内側に膨出させることにより形成されている。このため、トーボード４ｂ及びフロアパネル５とダッシュ下部稜線ビード７２とにより、車幅方向に延設される閉断面が形成されている。なお、この閉断面は、略矩形であることが好ましいが、所望の強度を確保することができれば、必ずしも略矩形でなくてもよい。 The dash lower ridge line bead 72 is a bead formed at a position corresponding to the dash lower ridge line L2 (see FIG. 2), and extends in the vehicle width direction along the dash lower ridge line L2. The dash lower ridge line bead 72 may be formed over the entire length of the dash lower ridge line L2, but may be formed only on a part of the dash lower ridge line L2, and a plurality of dash lower ridge line beads 72 are formed along the dash lower ridge line L2. May be. The dash lower ridge bead 72 is formed by bulging the connecting portion between the toe board corresponding reinforcing plate portion 61b and the floor panel corresponding reinforcing plate portion 62 to the inside of the vehicle. For this reason, the toe board 4b, the floor panel 5, and the dash lower ridge line bead 72 form a closed section extending in the vehicle width direction. The closed cross section is preferably substantially rectangular, but may not necessarily be substantially rectangular as long as a desired strength can be ensured.
　トンネル下部稜線ビード７３は、トンネル下部稜線Ｌ３（図２参照）に対応する位置に形成されるビードであり、トンネル下部稜線Ｌ３に沿って車両前後方向に延びている。なお、トンネル下部稜線ビード７３は、トンネル下部稜線Ｌ３の全長に亘って形成されてもよいが、トンネル下部稜線Ｌ３の一部にのみ形成されてもよく、トンネル下部稜線Ｌ３に沿って複数形成されてもよい。トンネル下部稜線ビード７３は、フロアパネル対応補強板部６２とフロアトンネル側壁対応補強板部６３ａとの接続部分を車両内側に膨出させることにより形成されている。このため、フロアパネル５及びフロアトンネル６の側壁部６ａとトンネル下部稜線ビード７３とにより、車両前後方向に延設される閉断面が形成されている。なお、この閉断面は、略矩形であることが好ましいが、所望の強度を確保することができれば、必ずしも略矩形でなくてもよい。 The tunnel lower ridge line bead 73 is a bead formed at a position corresponding to the tunnel lower ridge line L3 (see FIG. 2), and extends in the vehicle front-rear direction along the tunnel lower ridge line L3. The tunnel lower ridge line bead 73 may be formed over the entire length of the tunnel lower ridge line L3, but may be formed only on a part of the tunnel lower ridge line L3, and a plurality of tunnel lower ridge lines bead L3 are formed along the tunnel lower ridge line L3. May be. The tunnel lower ridge line bead 73 is formed by bulging a connection portion between the floor panel corresponding reinforcing plate portion 62 and the floor tunnel side wall corresponding reinforcing plate portion 63a toward the inside of the vehicle. Therefore, a closed cross section extending in the vehicle front-rear direction is formed by the side wall 6a of the floor panel 5 and the floor tunnel 6 and the tunnel lower ridge bead 73. The closed cross section is preferably substantially rectangular, but may not necessarily be substantially rectangular as long as a desired strength can be ensured.
　トンネル上部稜線ビード７４は、トンネル上部稜線Ｌ４（図２参照）に対応する位置に形成されるビードであり、トンネル上部稜線Ｌ４に沿って車両前後方向に延びている。なお、トンネル上部稜線ビード７４は、トンネル上部稜線Ｌ４の全長に亘って形成されてもよいが、トンネル上部稜線Ｌ４の一部にのみ形成されてもよく、トンネル上部稜線Ｌ４に沿って複数形成されてもよい。トンネル上部稜線ビード７４は、フロアトンネル側壁対応補強板部６３ａとフロアトンネル上壁対応補強板部６３ｂとの接続部分を車両内側に膨出させることにより形成されている。このため、フロアトンネル６の側壁部６ａ及び上壁部６ｂとトンネル上部稜線ビード７４とにより、車両前後方向に延設される閉断面が形成されている。なお、この閉断面は、略矩形であることが好ましいが、所望の強度を確保することができれば、必ずしも略矩形でなくてもよい。 The tunnel upper ridge line bead 74 is a bead formed at a position corresponding to the tunnel upper ridge line L4 (see FIG. 2), and extends in the vehicle front-rear direction along the tunnel upper ridge line L4. The tunnel upper ridge line bead 74 may be formed over the entire length of the tunnel upper ridge line L4, but may be formed only on a part of the tunnel upper ridge line L4, and a plurality of tunnel upper ridge line beads 74 are formed along the tunnel upper ridge line L4. May be. The tunnel upper ridge bead 74 is formed by bulging the connecting portion between the floor tunnel side wall corresponding reinforcing plate 63a and the floor tunnel upper wall corresponding reinforcing plate 63b to the inside of the vehicle. For this reason, a closed section extending in the vehicle front-rear direction is formed by the side wall portion 6 a and the upper wall portion 6 b of the floor tunnel 6 and the tunnel upper ridge bead 74. The closed cross section is preferably substantially rectangular, but may not necessarily be substantially rectangular as long as a desired strength can be ensured.
　タイヤハウス稜線ビード７５は、タイヤハウス稜線Ｌ５（図２参照）に対応する位置に形成されるビードであり、タイヤハウス稜線Ｌ５に沿って湾曲している。なお、タイヤハウス稜線ビード７５は、タイヤハウス稜線Ｌ５の全長に亘って形成されてもよいが、タイヤハウス稜線Ｌ５の一部にのみ形成されてもよく、タイヤハウス稜線Ｌ５に沿って複数形成されてもよい。タイヤハウス稜線ビード７５は、垂直壁部対応補強板部６１ａ、トーボード対応補強板部６１ｂ及びフロアパネル対応補強板部６２とタイヤハウス対応補強板部６４との接続部分を車両内側に膨出させることにより形成されている。このため、垂直壁部４ａ、トーボード４ｂ及びフロアパネル５とタイヤハウス稜線ビード７５とにより、閉断面が形成されている。なお、この閉断面は、略矩形であることが好ましいが、所望の強度を確保することができれば、必ずしも略矩形でなくてもよい。 The tire house ridge line bead 75 is a bead formed at a position corresponding to the tire house ridge line L5 (see FIG. 2), and is curved along the tire house ridge line L5. The tire house ridge line beads 75 may be formed over the entire length of the tire house ridge line L5, but may be formed only on a part of the tire house ridge line L5, and a plurality of tire house ridge lines L5 are formed along the tire house ridge line L5. May be. The tire house ridge line bead 75 bulges the connecting portion between the vertical wall portion corresponding reinforcing plate portion 61a, the toe board corresponding reinforcing plate portion 61b, the floor panel corresponding reinforcing plate portion 62, and the tire house corresponding reinforcing plate portion 64 to the inside of the vehicle. It is formed by. For this reason, a closed cross section is formed by the vertical wall portion 4a, the toe board 4b, the floor panel 5, and the tire house ridge bead 75. The closed cross section is preferably substantially rectangular, but may not necessarily be substantially rectangular as long as a desired strength can be ensured.
　フロントサイドメンバ稜線ビード７６は、フロントサイドメンバ稜線Ｌ６（図２参照）に対応する位置に形成されるビードであり、フロントサイドメンバ稜線Ｌ６に沿って略車両前後方向に延びる細長い環状に形成されている。なお、フロントサイドメンバ稜線ビード７６は、フロントサイドメンバ稜線Ｌ６の全長に亘って形成されてもよいが、フロントサイドメンバ稜線Ｌ６の一部にのみ形成されてもよく、フロントサイドメンバ稜線Ｌ６に沿って複数形成されてもよい。フロントサイドメンバ稜線ビード７６は、垂直壁部対応補強板部１１ａ、トーボード対応補強板部１１ｂ及びフロアパネル対応補強板部１２を車両内側に膨出させることにより形成されている。 The front side member ridge line bead 76 is a bead formed at a position corresponding to the front side member ridge line L6 (see FIG. 2), and is formed in an elongated annular shape extending substantially in the vehicle front-rear direction along the front side member ridge line L6. Yes. The front side member ridge line bead 76 may be formed over the entire length of the front side member ridge line L6, but may be formed only on a part of the front side member ridge line L6, along the front side member ridge line L6. A plurality of them may be formed. The front side member ridge line bead 76 is formed by expanding the vertical wall portion corresponding reinforcing plate portion 11a, the toe board corresponding reinforcing plate portion 11b, and the floor panel corresponding reinforcing plate portion 12 to the inside of the vehicle.
　クロスビード稜線ビード７７は、クロスビード稜線Ｌ７（図２参照）に対応する位置に形成されるビードであり、クロスビード稜線Ｌ７に沿って車幅方向に延びる細長い環状に形成されている。クロスビード稜線ビード７７は、垂直壁部対応補強板部１１ａを車両内側に膨出させることにより形成されている。 The cross bead ridge line bead 77 is a bead formed at a position corresponding to the cross bead ridge line L7 (see FIG. 2), and is formed in an elongated annular shape extending in the vehicle width direction along the cross bead ridge line L7. The cross bead ridge line bead 77 is formed by causing the vertical wall portion corresponding reinforcing plate portion 11a to bulge to the vehicle inner side.
　そして、補強部材５２には、軽量化用穴７８が形成されている。軽量化用穴７８は、補強部材５２の軽量化を図るものであり、補強部材５２を肉抜きすることにより形成されている。この軽量化用穴７８の位置、形状、大きさなどは、補強部材５２の強度を保持できる範囲で、適宜設定することができる。なお、図８では、網掛けにより軽量化用穴７８が示されており、トーボード対応補強板部１１ｂ及びタイヤハウス対応補強板部１４に軽量化用穴７８が形成されている。 Further, a weight reduction hole 78 is formed in the reinforcing member 52. The weight reducing hole 78 is intended to reduce the weight of the reinforcing member 52 and is formed by removing the reinforcing member 52. The position, shape, size, and the like of the lightening hole 78 can be set as appropriate as long as the strength of the reinforcing member 52 can be maintained. In FIG. 8, the weight reduction holes 78 are shown by shading, and the weight reduction holes 78 are formed in the toe board corresponding reinforcing plate portion 11 b and the tire house corresponding reinforcing plate portion 14.
　以上説明したように、本実施形態に係る車体前部構造５１によれば、稜線に沿って補強部材５２にビードを形成することで、当該稜線の強度を高めることができる。しかも、このビードにより閉断面を形成することで、この稜線方向の剛性を高めることができる。 As described above, according to the vehicle body front structure 51 according to this embodiment, the strength of the ridge line can be increased by forming the bead on the reinforcing member 52 along the ridge line. Moreover, the rigidity in the ridge line direction can be increased by forming a closed cross section with this bead.
　以上、本発明の好適な実施形態について説明したが、本発明は上記実施形態に限定されるものではない。 The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above embodiment.
　例えば、上記実施形態では、補強部材に複数のビードを形成するものとして説明したが、補強部材に形成するビードは、ダッシュパネル４、フロアパネル５及びフロアトンネル６のうち少なくとも一つと閉断面を形成するものであればよく、その数、位置、形状、大きさなどは、適宜変更することができる。 For example, in the above-described embodiment, the plurality of beads are formed on the reinforcing member. However, the beads formed on the reinforcing member form a closed cross section with at least one of the dash panel 4, the floor panel 5, and the floor tunnel 6. The number, position, shape, size, and the like can be changed as appropriate.
　本発明は、車両のダッシュパネル、フロアパネル及びフロアトンネルが補強部材により補強される車体前部構造に利用可能である。 The present invention can be used for a vehicle body front structure in which a dash panel, a floor panel, and a floor tunnel of a vehicle are reinforced by a reinforcing member.
　１…車体前部構造、２…車体前部、３…補強部材、４…ダッシュパネル、４ａ…ダッシュパネルの垂直壁部、４ｂ…ダッシュパネルのトーボード、５…フロアパネル、６…フロアトンネル、６ａ…フロアトンネルの側壁部、６ｂ…フロアトンネルの上壁部、７…タイヤハウス、８…フロントサイドメンバ、８ａ…フロントサイドメンバのフランジ部、８ｂ…フロントサイドメンバの側壁部、８ｃ…フロントサイドメンバの底壁部、９…フロントサイドレール、１０…ダッシュクロスビード、１１…ダッシュパネル対応補強板部、１１ａ…ダッシュパネル対応補強板部の垂直壁部対応補強板部、１１ｂ…ダッシュパネル対応補強板部のトーボード対応補強板部、１２…フロアパネル対応補強板部、１３…フロアトンネル対応補強板部、１３ａ…フロアトンネル側壁対応補強板部、１３ｂ…フロアトンネル上壁対応補強板部、１４…タイヤハウス対応補強板部、２１…トンネル下部ビード、２２…トンネル上部ビード、２３…タイヤハウスビード、２４…フロントサイドメンバビード、２５…クロスビード、２６…薄ビード、３１…車体前部構造、３２…補強部材、４１…ダッシュパネル対応補強板部、４１ａ…ダッシュパネル対応補強板部の垂直壁部対応補強板部、４１ｂ…ダッシュパネル対応補強板部のトーボード対応補強板部、４２…フロアパネル対応補強板部、４３…フロアトンネル対応補強板部、４３ａ…フロアトンネル側壁対応補強板部、４３ｂ…フロアトンネル上壁対応補強板部、４４…タイヤハウス対応補強板部、４５…軽量化用穴、４６…軽量化用穴、５１…車体前部構造、５２…補強部材、６１…ダッシュパネル対応補強板部、６１ａ…ダッシュパネル対応補強板部の垂直壁部対応補強板部、６１ｂ…ダッシュパネル対応補強板部のトーボード対応補強板部、６２…フロアパネル対応補強板部、６３…フロアトンネル対応補強板部、６３ａ…フロアトンネル側壁対応補強板部、６３ｂ…フロアトンネル上壁対応補強板部、６４…タイヤハウス対応補強板部、７１…ダッシュ中央稜線ビード、７２…ダッシュ下部稜線ビード、７３…トンネル下部稜線ビード、７４…トンネル上部稜線ビード、７５…タイヤハウス稜線ビード、７６…フロントサイドメンバ稜線ビード、７７…クロスビード稜線ビード、７８…軽量化用穴、Ｌ１…ダッシュ中央稜線、Ｌ２…ダッシュ下部稜線、Ｌ３…トンネル下部稜線、Ｌ４…トンネル上部稜線、Ｌ５…タイヤハウス稜線、Ｌ６…フロントサイドメンバ稜線、Ｌ７…クロスビード稜線、Ｌ１５…タイヤハウス対応補強板部稜線。 DESCRIPTION OF SYMBOLS 1 ... Vehicle body front part structure, 2 ... Vehicle body front part, 3 ... Reinforcement member, 4 ... Dash panel, 4a ... Dash panel vertical wall part, 4b ... Dash panel toe board, 5 ... Floor panel, 6 ... Floor tunnel, 6a ... side wall part of floor tunnel, 6b ... upper wall part of floor tunnel, 7 ... tire house, 8 ... front side member, 8a ... flange part of front side member, 8b ... side wall part of front side member, 8c ... front side member Bottom wall portion, 9 ... front side rail, 10 ... dash cross bead, 11 ... dash panel corresponding reinforcing plate portion, 11a ... vertical wall corresponding reinforcing plate portion of dash panel corresponding reinforcing plate portion, 11b ... dash panel corresponding reinforcing plate Reinforcing plate portion corresponding to toe board, 12 ... Reinforcing plate portion corresponding to floor panel, 13 ... Reinforcing plate portion corresponding to floor tunnel, 13a Reinforcing plate part corresponding to floor tunnel side wall, 13b ... Reinforcing plate part corresponding to floor tunnel upper wall, 14 ... Reinforcing plate part corresponding to tire house, 21 ... Lower bead of tunnel, 22 ... Upper bead of tunnel, 23 ... Tire house bead, 24 ... Front side Member bead 25 ... Cross bead 26 ... Thin bead 31 ... Car body front structure 32 ... Reinforcement member 41 ... Dash panel corresponding reinforcing plate 41a ... Dash panel corresponding reinforcing plate corresponding to vertical wall 41b ... Dash panel compatible reinforcing plate portion, toeboard compatible reinforcing plate portion, 42 ... Floor panel compatible reinforcing plate portion, 43 ... Floor tunnel compatible reinforcing plate portion, 43a ... Floor tunnel side wall reinforcing plate portion, 43b ... Floor tunnel upper wall Corresponding reinforcing plate, 44 ... Tire house-compatible reinforcing plate, 45 ... Lightening hole, 46 ... Lightening hole, 51 ... Car body Part structure, 52 ... reinforcing member, 61 ... reinforcement plate portion corresponding to dash panel, 61a ... reinforcement plate portion corresponding to vertical wall portion of dash panel correspondence reinforcement plate portion, 61b ... reinforcement plate portion corresponding to toe board of reinforcement plate portion corresponding to dash panel, 62 ... Reinforcing plate part for floor panel, 63 ... Reinforcing plate part for floor tunnel, 63a ... Reinforcing plate part for floor tunnel side wall, 63b ... Reinforcing plate part for upper wall of floor tunnel, 64 ... Reinforcing plate part for tire house, 71 ... Dash Center ridge bead, 72 ... Lower ridge ridge bead, 73 ... Tunnel lower ridge bead, 74 ... Tunnel upper ridge bead, 75 ... Tire house ridge bead, 76 ... Front side member ridge bead, 77 ... Cross bead ridge bead, 78 ... Lightweight Hole for conversion, L1 ... dash center ridgeline, L2 ... dash lower ridgeline, L3 ... tunnel lower ridgeline, L4 ... Tunnel upper ridge line, L5 ... Tire house ridge line, L6 ... Front side member ridge line, L7 ... Cross bead ridge line, L15 ... Tire house-compatible reinforcement plate ridge line.

Claims (6)

  1. 　ダッシュパネル、フロアパネル及びフロアトンネルを跨いで、車幅方向全体に亘って前記ダッシュパネル、前記フロアパネル及び前記フロアトンネルの車両内側に配設される補強部材を有し、
    　前記補強部材は、車両内側に膨出する膨出部が形成され、
    　前記膨出部は、前記ダッシュパネル、前記フロアパネル及び前記フロアトンネルのうち少なくとも一つと閉断面を形成する、
    車体前部構造。     Straddling the dash panel, the floor panel, and the floor tunnel, and having a reinforcing member disposed inside the vehicle of the dash panel, the floor panel, and the floor tunnel over the entire vehicle width direction,
    The reinforcing member is formed with a bulging portion that bulges inside the vehicle,
    The bulging portion forms a closed cross section with at least one of the dash panel, the floor panel, and the floor tunnel;
    Body front structure.
  2. 　前記膨出部は、前記フロアトンネルの下部及び前記フロアパネルとの間に、車両前後方向に延設される閉断面を形成する、
    請求項１に記載の車体前部構造。     The bulging portion forms a closed cross section extending in the vehicle front-rear direction between the lower portion of the floor tunnel and the floor panel.
    The vehicle body front part structure according to claim 1.
  3. 　前記膨出部は、前記フロアトンネルの上部との間に、車両前後方向に延設される閉断面を形成する、
    請求項１又は２に記載の車体前部構造。     The bulge portion forms a closed cross section extending in the vehicle front-rear direction with the upper portion of the floor tunnel.
    The vehicle body front part structure according to claim 1 or 2.
  4. 　前記ダッシュパネル及び前記フロアパネルの車両外側にフロントサイドメンバが車両前後方向に延設されており、
    　前記膨出部は、前記フロントサイドメンバの延設部位に沿って形成されている、
    請求項１～３の何れか一項に記載の車体前部構造。     Front side members are extended in the vehicle front-rear direction on the vehicle outer side of the dash panel and the floor panel,
    The bulging portion is formed along the extending part of the front side member,
    The vehicle body front structure according to any one of claims 1 to 3.
  5. 　前記膨出部は、前記ダッシュパネル、前記フロアパネル及び前記フロアトンネルのうち少なくとも二つにより形成される稜線に沿って形成されている、
    請求項１～４の何れか一項に記載の車体前部構造。     The bulging portion is formed along a ridge formed by at least two of the dash panel, the floor panel, and the floor tunnel.
    The vehicle body front structure according to any one of claims 1 to 4.
  6. 　前記補強部材は、タイヤハウスも跨いでいる、
    請求項１～５の何れか一項に記載の車体前部構造。     The reinforcing member straddles the tire house,
    The vehicle body front structure according to any one of claims 1 to 5.
PCT/JP2011/077567 2011-11-29 2011-11-29 Vehicle body front structure WO2013080305A1 (en)

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CN114056438A (en) * 2020-08-06 2022-02-18 本田技研工业株式会社 Vehicle body front structure

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EP3620355A1 (en) * 2018-08-10 2020-03-11 Toyota Jidosha Kabushiki Kaisha Vehicle body structure
US11312421B2 (en) 2018-08-10 2022-04-26 Toyota Jidosha Kabushiki Kaisha Vehicle body structure having a reinforcing member
CN114056438A (en) * 2020-08-06 2022-02-18 本田技研工业株式会社 Vehicle body front structure

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