Patent ID: 8327731

Claim:
A rack bar supporting device of a steering apparatus for a vehicle, comprising: a support yoke inserted into a cylinder of a gear box to support a rear surface of a rack bar; a clearance compensation elastic body assembled with and supporting a rear surface of the support yoke; a yoke support body having a front surface supporting the clearance compensation elastic body, a fastening boss disposed at a center of a rear surface of the yoke support body, the fastening boss having a first spring latching jaw comprising a recess extending radially from one side of an outer circumferential surface of the fastening boss, and a first guide surface protruding backward from a periphery of a rear surface of the yoke support body, the first guide surface being an inclined surface that has a reducing width from an outer circumferential surface of the yoke support body to a front surface of the yoke support body; a yoke plug comprising a second guide surface, being in surface contact and assembled with the first guide surface of the yoke support body in a periphery of a front surface of the yoke plug, and a spring insertion bore having a decreased diameter at a center of the front surface of the yoke plug, the spring insertion bore having a through hole in a rear surface of the spring insertion bore and a second spring latching jaw comprising a recess extending radially from an inner circumferential surface of the spring insertion bore; a torsion spring inserted to an outer circumference of the fastening boss in which one side of the torsion spring is supported by the first spring latching jaw and the other side of the torsion spring is supported by the second spring latching jaw to support the yoke support body in a front direction; and a temporary assembly nut assembled with the fastening boss passing through the through hole of the spring insertion bore of the yoke plug so as to apply torsion to the torsion spring while wide parts of the first guide surface and second guide surface come into close contact with each other.