Construction is achieved wherein the rear section of a steering column 6a can be prevented from displacing upward regardless of the occurrence of a secondary collision, and thus can effectively protect the driver. Capsules 28 are supported by a bracket on the vehicle body side. An installation plate section 14b of a bracket 13 on the housing side is held between a top plate section 29 and bottom plate section 30 of each of the capsules 28 so that the installation plate section 14b can displace in the forward direction during a secondary collision. The top and bottom plate sections 29, 30 extend forward to a position where they can support the installation plate section 14b even when the bracket 13 on the housing side has displaced in the forward direction due to a secondary collision. Alternatively, a suspended arm that functions in the same way is provided on the bracket on the vehicle body side.