Patent ID: 9688300
Date: 2017-06-27
CPC Classifications: B62D,F16D

Claim:
1. A method for manufacturing a steering device comprising: manufacturing an outer shaft including an inner space with a spline hole portion; manufacturing a metallic core including a spline shaft portion with a surface disposed around a center axis; processing the surface of the spline shaft portion so as to manufacture an inner shaft including a first spline shaft portion and a second spline shaft portion, the first spline shaft portion including a first surface formed of synthetic resin, the second spline shaft portion being disposed adjacent to one side of the first spline shaft portion in an axial direction parallel to the center axis, including one end of the core disposed in the inner space, and including a second surface formed of metal, a distance between the second surface and the center axis being smaller than a distance between the center axis and the first surface; inserting the second spline shaft portion into the inner space and spline-fitting the spline hole portion and the first spline shaft portion to each other so that the outer shaft and the inner shaft relatively move in the axial direction; covering a part of a surface of the spline shaft portion including one end of the core by a mask member, such that the mask member covers splines of the second spline shaft portion; and supplying synthetic resin to the spline shaft portion covered by the mask member so as to form the first spline shaft portion, wherein the mask member includes a cap member provided with a spline, and wherein the splines extend along the core of the first spline shaft portion and the second shaft portion.