| 摘要 |
[Problem] There is provided a steering device capable of easily setting an absorption amount of impact energy to a predetermined magnitude at a time when a female male shaft and a male shaft undergo relative contraction upon occurrence of a vehicle collision. [Solution] If a male shaft 12B undergoes contraction by a length L1 against a female shaft 12A, a serrated edge 31 on a right-end surface (a butting surface) 121A of the female shaft 12A is butted against a left-end surface 41 (a butting surface) of an impact-energy absorption part 40. Then, the serrated edge 31 of a female serration 30 is firmly butted against a left-end surface 41 (a butting surface) of the impact-energy absorption part 40 to undergo plastic deformation, whereupon resistance to collapsing increases, thereby absorbing impact energy. Because the serrated edge 31 of the female serration 30 is butted against the left-end surface 41 of the impact-energy absorption part 40, surrounding the whole outer periphery of the male shaft 12B, in the circumferential direction thereof, torsion does not occur between the female shaft 12A, and the male shaft 12B, thereby stabilizing an absorption amount of impact energy. |
