STEERING COLUMN SYSTEM


  1. CONSTRUCTION


    1. The steering column assembly consists of the steering main shaft, tilt motor, telescopic motor and multiplex tilt and telescopic ECU.

      A019QKMC01
      *1 Multiplex Tilt and Telescopic ECU *2 Telescopic Motor
      *3 Steering Main Shaft *4 Tilt Motor

    2. Power Tilt and Power Telescopic System


      1. A stepless adjustment enables the tilt mechanism to be tilted 69.0 mm (2.72 in.) vertically, and the telescopic mechanism to be moved 45.0 mm (1.77 in.) longitudinally.

        A019QR0E02
        *1 Tilt Mechanism
        *2 Telescopic Mechanism

    3. Energy Absorbing Mechanism


      1. The energy absorbing mechanism mainly consists of the energy absorbing plate, breakaway bracket, steering intermediate shaft assembly, No. 2 steering intermediate shaft sub-assembly, and column tube. The steering column assembly is mounted on the instrument panel reinforcement via a breakaway bracket. The steering column assembly and the steering gear assembly are connected with a contractile intermediate shaft.

        Figure 1. Before Collision

        A019QPSC01
        *1 Breakaway Bracket *2 Instrument Panel Reinforcement
        *3 Energy Absorbing Plate *4 Column Tube
        *5 Steering Intermediate Shaft Assembly *6 No. 2 Steering Intermediate Shaft Sub-assembly

      2. When the steering gear assembly moves during a collision (primary collision), the No. 2 steering intermediate shaft sub-assembly contracts, thus helping reduce the possibility of the steering column assembly and the steering wheel protruding into the cabin.

      3. When a collision impact is transmitted to the steering wheel (secondary collision), the steering wheel and the airbag help absorb the impact.

      4. At this time, the energy absorbing plate deforms, and the column tube contracts.

        Figure 2. After Collision

        A019R1IC01
        *1 Breakaway Bracket *2 Instrument Panel Reinforcement
        *3 Energy Absorbing Plate *4 Column Tube
        *5 Steering Intermediate Shaft Assembly *6 No. 2 Steering Intermediate Shaft Sub-assembly
        *a Primary Collision *b Secondary Collision

      5. By using a permanently expandable and contractible steering intermediate shaft assembly and a No. 2 steering intermediate shaft sub-assembly that deforms and contracts during collisions, safety during collisions is ensured and a smooth steering feeling is achieved.

        A019QEJ