Patent ID: 6574850
Filing Date: 2003-06-10
Classification: B62D,Y10T

Abstract:
A method for manufacturing a shock absorbing type steering shaft for fitting and fixing a solid inner shaft member having a male serration in a tubular outer shaft member having a complementary female serration, comprising:inserting into a hollow tip end portion of the tubular outer shaft member a solid tip end portion of the inner shaft member that fills the hollow tip end portion of the tubular outer shaft member so that the inner shaft member is held by and overlaps with the outer shaft member at the tip end portions thereof; pressing radially inwardly the outer shaft member, at a position or positions thereof displaced from the overlapping tip end portions, by means of pressing members to deform plastically an inner portion or portions of the outer shaft member; removing the pressing members; and further inserting the inner shaft member into the outer shaft member, thereby pressure-contacting and fixing the inner shaft member to a portion or portions of the outer shaft member deformed plastically by the pressing members.