| 摘要 |
Disclosed is a ball joint assembly for a gas spring. The ball joint assembly includes a ball joint provided at both ends of the gas spring. The ball joint is formed at an inner portion thereof with a ball insertion hole, into which upper and lower backup rings are sequentially accommodated so as to prevent a support ball of a ball stud from being spaced from an inner wall of the ball insertion hole when the support ball of the ball stud is inserted into the ball insertion hole. An inner nut is coupled into a lower portion of the ball insertion hole or a washer is inserted into the lower portion of the ball insertion hole through a caulking process so as to prevent the upper and lower backup rings from being separated from the ball insertion hole. The ball insertion hole of the ball joint includes an opening section, which is positioned opposite to the ball receiving section. A coupling recess is formed at an upper end of the support ball of the ball stud in order to improve assembling efficiency for the ball stud.
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