BODY STRUCTURE (for TMMK Made) DETAILS


  1. FUNCTION


    1. Safety Features


      1. Impact Absorbing Structure for Frontal Collision


        1. Through the adoption of a body structure that disperses collision energy to multiple frame components, collision energy is efficiently absorbed to suppress cabin deformation.

        2. The front side members are utilized to absorb and disperse energy in a frontal collision.

        3. A spacer has been added to the front side of the front side member. The spacer transmits impact received outside of the front bumper reinforcement to the front side member. (on left side)

        4. The front body pillar reinforcements are strengthened to optimize dispersal of collision energy to the roof rail, rocker panel and floor panel.

          B0001ZVE01
          Text in Illustration
          *1 Front Bumper Reinforcement *2 Spacer
          *3 Front Side Member *4 Front Body Pillar Reinforcement
          B0001YT Impact B00023F Impact Flow

      2. Impact Absorbing Structure for Side Collision


        1. Ultra high tensile strength steel is used for the center pillar outer reinforcement, center pillar beltline reinforcement, center pillar hinge reinforcement, rocker panel inner reinforcement and rocker panel outer reinforcement to ensure high strength.

        2. Bulkheads are placed on both sides of the floor crossmembers and center floor side crossmember to efficiently transmit impact load from the impact beam to the floor crossmembers.

        3. The use of roof reinforcements enables a construction that transmits load to the opposite side of the vehicle in a collision.

        4. Optimal placement of the impact protect beams enables a construction that efficiently transmits load.

        5. The impact support box is optimally placed on the front floor between the driver seat and front passenger seat to ensure that load is transmitted from the center pillar to the seat pipe, impact support box, and seat pipe on the opposite side, thus helping secure sufficient survival space.

        6. A rear door box is provided inside the bottom of the rear door. In the event of a side collision, the rear door box strikes the rear crossmember gusset, absorbing the impact by transmitting it to the center floor member.

          B0001Y8E01
          Text in Illustration
          *1 Center Pillar Outer Reinforcement *2 Front Floor Crossmember
          *3 Center Floor Crossmember *4 Roof Reinforcement
          *5 Rocker Panel Reinforcement *6 Impact Protect Beam
          *7 Impact Support Box *8 Seat Pipe
          *9 Rear Door Box *10 Center Crossmember Gusset
          B0001YT Impact B00023F Impact Flow

        7. When the roof is subjected to an impact, the impact is dispersed to the roof reinforcements, front pillars and center pillars, thereby minimizing deformation of the cabin.

          B00021M
          Text in Illustration
          B0001YT Impact B00023F Impact Flow

      3. Impact Absorbing Structure for Rear Collision


        1. Straight rear side members are used to reduce body deformation in a rear collision.

      4. Lessening Pedestrian Injury


        1. A hood reinforcement is provided for the hood inner panel to help ensure excellent pedestrian protection performance and tensile rigidity.

          B0001SME01
          Text in Illustration
          *1 Longitudinal Ribbed Structure *2 Dent Reinforcement (Impact Absorbing Structure)

        2. An impact absorbing bracket is used for the mounting portion of the front fender panel to absorb impact energy to the head of a pedestrian in a collision, thus dampening impact to the head.

          B0001YHE01
          Text in Illustration
          *1 Impact Absorbing Bracket (Front) *2 Impact Absorbing Bracket (Rear)
          *a A-A Cross Section *b B-B Cross Section
          *c Before Collision *d After Collision
          B0001YT Impact - -

        3. The cowl uses an open section structure that collapses easily in an impact from the top, thus reducing the impact and head injuries sustained by a pedestrian in an accident.

          B0001Y1E01
          Text in Illustration
          *1 Windshield Glass *2 Cowl Top Panel Sub-assembly
          *a A-A Cross Section *b Before Collision
          *c After Collision - -
          B0001YT Impact - -

    2. Aerodynamics


      1. Aero stabilizing fins are provided on the outer rear view mirror bases and on the rear combination light lenes for enhanced aerodynamics.


        1. After passing the aero stabilizing fin, the air speed will increase and a vortex will be generated.

        2. This vortex increases the speed of the surrounding air while at the same time pulling the airflow towards the vehicle body.

        3. The airflow with higher speed passes near both sides of the vehicle body and ends at the rear of the vehicle. This helps to hold the vehicle body, thus stabilizing the vehicle.

        B0002A2E01
        Text in Illustration
        *a Aero Stabilizing Fin *b Vortex
        B00023F Airflow B0001YT Holds the Vehicle from Both Sides

      2. Various types of airflow routing parts are provided under the floor to control airflow. In addition, an undercover is provided to make the under floor area flat in order to ensure excellent aerodynamic performance.

      3. A fin-shaped engine under cover and rear under cover have been adopted to achieve higher diffuser efficiency, ensuring stability..

        B0001U3
        Text in Illustration
        B00025U Undercover Area - -

  2. CONSTRUCTION


    1. Lightweight and Highly Rigid Body


      1. High strength steel and ultra high strength steel are used in order to realize excellent body rigidity and a lightweight body.

        B00023OE01
        Text in Illustration
        *1 High Strength Sheet Steel *2 Ultra High Strength Sheet Steel

    2. Rust-resistant Body


      1. Anti-corrosion steel sheet is used as shown in the following illustration:

        B0001KUE01
        Text in Illustration (Upper Body:)
        *A Models with Sliding Roof System - -
        B00025U Anti-corrosion Steel Sheet - -

      2. For rust resistance, sealant has been applied to the floor panel to prevent water from entering through the mating surfaces of the panels. Under coat has been also applied to reduce damage to the body from chipping, contributing to rust resistance.

        B0001MBE01
        Text in Illustration (Under Body:)
        *a Sealant - -
        B00025U Undercoat - -

    3. Body Shell Construction


      1. The cowl top panel sub-assembly outer, which is straight, is used to connect the left and right front spring supports, improving lateral rigidity and ensuring front suspension input point rigidity and body rigidity.

        B0001S6E01
        Text in Illustration
        *1 Cowl Top Panel Sub-assembly - -

      2. A closed shape has been adopted for the upper back panel. The upper back panel, which is straight, is used to connect the left and right back side panels, realizing a lightweight yet rigid body.

        B0001WFE01
        Text in Illustration
        *1 Under Back Panel - -

      3. Along with the optimal positioning of frame components such as rear side members, center floor members, the rear floor crossmembers and rear sub-frame, the usage of a small number of parts has realized a lightweight design while also ensuring excellent rigidity and handling stability.

        B00027EE01
        Text in Illustration
        *1 Rear Side Member *2 Center Floor Crossmember
        *3 Rear Floor Crossmember *4 Rear Sub-frame

    4. Low Vibration and Low Noise Body


      1. The following body structures are used in order to reduce panel vibration and body frame movement.

        Panel vibration reduction structure

        • The crossmember of the dash panel is provided

        • The tunnel reinforcement is connected to the floor

        • The floor pan panel rigidity has been improved

        • The floor pan bead layouts have been changed
        B0001ZGE01
        Text in Illustration
        *1 Crossmember of The Dash Panel *2 Tunnel Reinforcement
        *3 Floor Pan Panel *4 Bead

      2. Damping coatings are provided, combining enhanced quietness and reduced weight.

        B0001VC
        Text in Illustration
        B00025U Damping Coating - -

      3. Silencer pads are provided on the engine compartment side and cabin side of the dash panel, minimizing penetration of engine noise and road noise into the cabin.

        B0002BLE01
        Text in Illustration
        *1 Dash Panel Insulator Outer *2 Dash Panel
        *3 Dash Panel Insulator Inner - -

      4. The layout of the sound-absorbing material is optimized to reduce noise and vibration.

        B0001VYE01
        Text in Illustration
        *a A-A Cross Section *b B-B Cross Section
        *c C-C Cross Section - -
        B00024F Sound-absorbing Material - -

      5. Silencers are provided inside the rear wheel housings to minimize the penetration of splashing noise generated in the wheel housings into the cabin.

        B0001YFE01
        Text in Illustration
        *1 Rear Wheel House Silencer - -
        *a A-A Cross Section - -

      6. Weatherstrips are provided for the front and rear doors at the rocker panel to minimize the penetration of road noise into the cabin.

        B000246E01
        Text in Illustration
        *1 Weatherstrip - -
        *a A-A Cross Section - -