Steering column device

A steering column device comprising:

• a steering column including an inner column, and an outer column having a column-side through hole penetrating in a width direction, arranged on one side in an axial direction of the inner column, and externally fitted so as to displace relative to the inner column in the axial direction;
• an adjustment rod having a cam portion on an outer circumferential surface and inserted into the column-side through hole;
• an adjustment lever fixed to the adjustment rod and configured to rotate the adjustment rod;
• and
• a locking mechanism including an inner side locking member having a recessed engagement portion at a plurality of locations in the axial direction and provided on the inner column, and an outer side locking member having a protruding engagement portion capable of engaging with the recessed engagement portion;
• wherein
• the outer side locking member has a first element, at least a portion of which is supported movably toward and away from the inner side locking member;
• a second element having the protruding engagement portion and supported such that the protruding engagement portion is able to displace in an engagement-disengagement direction with respect to the recessed engagement portion;
• a first biasing member elastically biasing at least a portion of the first element in a direction away from the inner side locking member;
• and a second biasing member elastically biasing the second element in a direction such that the protruding engagement portion is engaged with the recessed engagement portion with respect to the engagement-disengagement direction;
• and
• the cam portion presses the first element in a direction such that at least a portion of the first element approaches the inner side locking member due to rotation of the adjustment rod in response to operation of the adjustment lever.