Steering column device for vehicle

A steering column device for a vehicle comprising:

• an attachment bracket fixed to a part of a vehicle body;
• a steering column jacket to which an impact load is exerted;
• a detachable bracket that is detachably attached to the attachment bracket for supporting the steering column jacket;
• a tearable first energy absorbing member having one end fixed to the attachment bracket and the other end fixed to the detachable bracket;
• a tearable second energy absorbing member having one end fixed to the detachable bracket and the other end engageable with the attachment bracket;
• and
• a pyro-actuator for having the other end of the second energy absorbing member engaged with the attachment bracket, the pyro-actuator having a pin to be engaged with the other end of the second energy absorbing member, wherein the pyro-actuator leaves the other end of the second energy absorbing member unengaged with the attachment bracket under a low-impact load condition, and has the other end of the second energy absorbing member engaged with the attachment bracket, forcing the pin thereof engaged with the other end of the second energy absorbing member, under a high-impact load condition where the impact load is greater than that of the low-impact load condition;
• and wherein the pyro-actuator is fixed to the attachment bracket with a fixation bracket which has a guide portion for guiding the other end of the second energy absorbing member and a pin support portion for supporting the pin of the pyro-actuator engaged with the other end of the second energy absorbing member.