Energy absorbing steering column assembly

A steering column assembly for a vehicle includes a housing defining a bore that extends along an axis. The steering column assembly includes a first shaft disposed in the bore and a second shaft telescopically engaged with the first shaft. The second shaft is movable along the axis relative to the housing. A wedge is fixed to the second shaft and is spaced from the housing. During frontal impact of the vehicle, an occupant may impact the steering column assembly. Relative telescopic retraction of the first shaft and the second shaft provides a first stage of energy absorption. As the first shaft and the second shaft telescopically retract, the wedge contacts the housing and deforms the housing in a second stage of energy absorption. 种用于车辆的转向柱总成，包括限定沿着轴线延伸的孔的壳体。转向柱总成包括设置在孔中的第轴和与第轴套叠地接合的第二轴。第二轴可相对于壳体沿着轴线移动。楔形件固定到第二轴并且与壳体间隔开。在车辆的正面碰撞期间，乘员可能撞击转向柱总成。第轴和第二轴的相对套叠式缩回提供了能量吸收的第阶段。当第轴和第二轴套叠地缩回时，楔形件接触壳体并且在能量吸收的第二阶段中使壳体变形。