STEERING DEVICE

PROBLEM TO BE SOLVED: To provide a steering device which inhibits variation of a displacement load during a secondary collision in a structure including a tooth lock mechanism.SOLUTION: A tooth lock mechanism 40 includes: a first tooth formation member 41 which integrally moves with an upper jacket 7; and a second tooth formation member 42 including a pair of connection parts 50, which are disposed between a pair of fastened parts 19 of a lower jacket 8 and define a storage space S therebetween, the second tooth formation member 42 supported by a support shaft 43 supported by the lower jacket 8. The tooth lock mechanism 40 includes: a driving member 44 which integrally rotates with a fastening shaft 21; and a connection shaft 45 which connects the driving member 44 with the second tooth formation member 42. The connection shaft 45 includes: a pair of first portions 45a inserted into first connection holes 51 to be connected thereto; a second portion 45b disposed in the storage space S and inserted into a second connection hole 52 to be connected thereto; and third portions 45c which are disposed at both sides of the second portion 45b in the storage space S and break during a secondary collision.SELECTED DRAWING: Figure 5 【課題】ツースロック機構を備える構成において、二次衝突時の離脱荷重のばらつきを抑制できるステアリング装置を提供する。【解決手段】ツースロック機構４０は、アッパージャケット７と一体移動する第１歯形成部材４１と、ロアージャケット８の一対の被締付部１９間に配置されて互いの間に収容空間Ｓを区画した一対の連結部５０を含みロアージャケット８に支持された支持軸４３に支持された第２歯形成部材４２とを含む。また、ツースロック機構４０は、締付軸２１と一体回転する駆動部材４４と、駆動部材４４と第２歯形成部材４２とを連結する連結軸４５とを含む。連結軸４５は、第１連結孔５１に挿通連結された一対の第１部分４５ａと、収容空間Ｓに配置され第２連結孔５２に挿通連結された第２部分４５ｂと、収容空間Ｓにおいて第２部分４５ｂの両側に配置され二次衝突時に破断する第３部分４５ｃとを含む。【選択図】図５