STEERING COLUMN SYSTEM


  1. CONSTRUCTION


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

  2. OPERATION


    1. Primary Collision


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

        Figure 1. Models with Power Tilt and Telescopic System

        A01GG94C01
        *1 Instrument Panel Reinforcement *2 No. 2 Steering Intermediate Shaft Assembly
        *3 Column Tube *4 Breakaway Bracket
        *a Before Collision *b After Collision
        B008G4C Contract - -

        Figure 2. Models with Manual Tilt and Telescopic Mechanism

        A01GGJBC01
        *1 Instrument Panel Reinforcement *2 No. 2 Steering Intermediate Shaft Assembly
        *3 Column Tube *4 Breakaway Bracket
        *a Before Collision *b After Collision
        B008G4C Contract - -

    2. Secondary Collision


      1. When a collision impact is transmitted to the steering wheel assembly (secondary collision), the steering wheel assembly and the airbag help absorb the impact. In addition, the breakaway bracket separates and the column tube contracts. At this time, the friction resistance of the sliding portion, which is staked to the column tube, absorbs the energy. This sequential energy absorbing mechanism helps absorb the impact of the secondary collision.

        Figure 3. Electric Power Steering Column Sub-assembly Cross Section (Models with Power Tilt and Telescopic System)

        A01GGLHC01
        *1 Column Tube - -
        *a Sliding Stroke *b Before Collision
        *c After Collision - -
        B008G4C Contract - -

        Figure 4. Electric Power Steering Column Sub-assembly Cross Section (Models with Manual Tilt and Telescopic Mechanism)

        A01GGTAC01
        *1 Column Tube - -
        *a Sliding Stroke *b Before Collision
        *c After Collision - -
        B008G4C Contract - -