| 摘要 |
PURPOSE: A steering device of a car is provided to prevent the damage of a first magnetic structure member or the error of a torque measurement value through maximizing coupling strength by a serration formed in an input shaft. CONSTITUTION: A steering device of a car comprises an annular member(264) and an input shaft(230). A magnet(262) is coupled in the outer circumference of the annular member. The annular member comprises one or more projection(266) in the inner circumference. The input shaft comprises a groove part(232) coupling the projection in the external surface and a holding hook for fixing one side of the annular member in the external surface. The projection comprises an inclined portion formed in a coupling part coupled with the input shaft.
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