Patent ID: 7578744

Claim:
A slip joint for a steering system having a steering shaft and a gear unit for converting rotational movement of the steering shaft into linear movement, the steering shaft having a slip joint adapted to extend or contract in a longitudinal direction, the slip joint comprising: a shaft having a plurality of shaft grooves formed on an outer peripheral surface in the longitudinal direction; a pipe having pipe grooves formed on an inner peripheral surface, the pipe grooves facing the shaft grooves so as to define cylindrical spaces including at least a first cylindrical space and a second cylindrical space, an end of the shaft being inserted into the pipe; a first pin inserted into the first cylindrical space; a second spring pin inserted into the second cylindrical space, the second cylindrical space being free of the first pin, the first cylindrical space being free of the second spring pin, the second spring pin being made of a cylindrical elastic body having a longitudinal seam; and a connector for integrally connecting the second spring pin to the first pin so as to constitute a slipper.