| 摘要 |
PROBLEM TO BE SOLVED: To provide a shock absorption type steering column device capable of obtaining shock absorption characteristic at an initial stage of secondary collision even if an adjustment stroke at a longitudinal position of a steering wheel is the maximum or minimum. SOLUTION: When a vehicle during traveling collides with an obstacle, an inner tube 12 intrudes into an outer tube 10 by the fact that a driver secondarily collides to a steering wheel by inertia. At this time, a projection 26 of the outer tube is positioned in a range E of telescopic stroke and is fitted to a first groove 24a of a groove 24 of the inner tube. Therefore, slide resistance is generated between taper surfaces 26a, 26b of the projection 26 of the outer tube and a groove surface of the first groove 24. Further, secondary collision energy is absorbed by the slide resistance generated between the projection 26 of the outer tube and the first groove 24a. COPYRIGHT: (C)2007,JPO&INPIT |
