| 摘要 |
<p>PROBLEM TO BE SOLVED: To realize, at low costs, a structure capable of reducing an operation torque for an adjustment lever in holding a steering wheel at a position after adjustment.SOLUTION: Continuous surfaces 24a and 24a connecting together to-be-driven side concave and convex surfaces 21a and 22a of a to-be-driven side cam surface 23a are composed of inner continuous surfaces 31 and 31 and outer continuous surfaces 32 and 32 outer in the radial direction relative to the inner continuous surfaces 31 and 31. The heights of the outer continuous surfaces 32 and 32 relative to the to-be-driven side concave surfaces 21a and 21a at positions matching the inner continuous surfaces 31 and 31 in the circumferential direction, respectively, are smaller than the heights of the inner continuous surfaces 31 and 31. The outer continuous surfaces 32 and 32 are connected smoothly to the to-be-driven side convex surfaces 22a and 22a, respectively, and the connection positions X are deviated, in one circumferential direction, from positions Y where the inner continuous surfaces 31 and 31 are connected to the to-be-driven side convex surfaces 22a and 22a, respectively.</p> |
