BODY STRUCTURE


  1. FUNCTION


    1. Impact Absorbing Structure for Frontal Collision


      1. A structure that ensures collision energy absorption efficiency, dissipates impact, and minimizes cabin deformation during a frontal collision has been achieved.


        • Ultra high-tensile strength sheet steel (980 MPa class) is used for the No. 1 rocker panel reinforcement. In addition, strengthening reinforcement is added in the No. 1 rocker panel reinforcement. As a result, deformation of the cabin, which is caused by the vehicle's pitching in an offset front collision, has been suppressed.

        • The rocker front end portion (outer rocker extension) is protruded forward to receive collision load input from the tires in an offset front collision and to absorb the impact, thus suppressing body deformation on the periphery of the cabin.

        A01F6JHC01
        *1 Outer Side Panel *2 Front Body Pillar Upper Outer Extension
        *3 Fender Inner Panel *4 No. 1 Rocker Panel Reinforcement
        *a A-A Cross Section *b B-B Cross Section
        B0072B5 Impact B007279 Path to Collision Energy

    2. Impact Absorbing Structure for Side Collision


      1. The inner center body pillar and No. 2 center floor cross members are connected with rear floor side panels, enabling impact caused during a side collision to be concentrated into the cross member, reducing body deformation.

        A01F6DTC01
        *1 Dash Panel Sub-assembly *2 Instrument Panel Reinforcement Assembly
        *3 Outer Windshield Header Panel *4 Roof Panel Reinforcement
        *5 Upper Back Window Frame *6 Outer Upper Back Panel
        *7 Rear Center Floor Cross Member *8 Front Seat Outside Bracket
        *9 Front Floor Cross Member *10 Rear Rocker Inner Panel
        *11 Lower Center Body Pillar Extension *12 Rear Floor Side Panel
        *13 Rear No. 1 Floor Cross Member Reinforcement *14 Rear Floor Cross Member Reinforcement
        *15 No. 2 Center Floor Cross Member - -
        B0072B5 Impact B007279 Path of Collision Energy

        • Hot-stamped steel (1470 MPa class), ultra high-tensile strength sheet steel (980 MPa class) and high-tensile strength sheet steel (590 MPa class) are used for each body frame part, thus ensuring strength against side collisions and achieving weight reduction and structure simplicity.

          Tech Tips

          Hot-stamped steel is a highly strengthened material, which is made by forming and cooling heated steel simultaneously and then hardening it.


          • Hot-stamped steel (1470 MPa class) is used for the upper center body pillar reinforcement. In addition, the high-tensile strength sheet steel (980 MPa class) No. 2 center pillar upper hinge reinforcement is located inside the upper center body pillar reinforcement.

        • 2 impact energy absorbing materials are installed in the center body pillar, absorbing energy that would otherwise be transferred to the No. 2 center floor cross member and reducing deformation of the upper portion of the center body pillar.

        • Ultra high-tensile strength sheet steel (980 MPa class) is used for the No. 1 rocker panel reinforcement, suppressing deformation of the rocker cross-section in a side collision.

        • A bulkhead has been added to the rocker panel reinforcement, realizing a structure which absorbs impact caused in a side collision.

        • 2 door side impact protection beams are installed to each front door, reducing deformation of the door in a side collision.

        A01F6DPC02
        *1 Upper Roof Side Rail *2 Inner Center Body Pillar
        *3 Belt Anchor To Center Pillar Reinforcement *4 No. 2 Center Pillar Upper Hinge Reinforcement
        *5 Lower Center Body Pillar Extension *6 Upper Center Body Pillar Reinforcement
        *7 Rear Rocker Inner Panel *8 Door Side Impact Protection Beam
        *9 Outer Side Panel *10 No. 1 Rocker Panel Reinforcement
        *11 Bulkhead - -
        *a A-A Cross Section *b B-B Cross Section
        *c C-C Cross Section - -