DUST COVER FOR BALL JOINT HAVING IMPROVED AIR TIGHTNESS, AND BALL JOINT HAVING SAME

摘要

According to the present invention, a dust cover used for a ball joint comprises: a ball stud having a stud unit and a spherical ball unit disposed at the end of the stud unit; a ball sheet coupled with the ball unit; and a socket on which the ball seat is seated. The dust cover also comprises: a ring-shaped stud coupling end (141) using a standard axial line (X) of a line coupled with the stud unit as a center; a socket coupling end (144) having a larger diameter than the stud coupling end, having a ring shape using the standard axial line (X) as a center, and coupled with the socket disposed to be separated from the stud coupling end (141); and a connection unit (146) for connecting the stud coupling end and the socket coupling end. The connection unit comprises: a first extension unit (147) extended toward the socket coupling end side from the stud coupling end; a second extension unit (148) extended toward the stud coupling end (141) from the socket coupling end (144); and a third extension unit for connecting the first extension unit and the second extension unit. The third extension unit has a slope connection unit (150) inclined toward the stud coupling end side while moving toward the outside of a radius direction.;COPYRIGHT KIPO 2017