| 摘要 |
A ball joint is provided to compensate grease through a rear side of a ball and prevent injected grease from being leaked outside the ball, thereby increase durability of ball joint. A ball joint includes a joint body(100), a head part(110), a receiving chamber(101), a grease storage(102), a stud bolt(200), a ball(210), a rubber cap(120), a nipple insertion hole(111), and an injection nipple(300). The receiving chamber is formed on the head part of the joint body. The grease storage is formed on an inside wall of the receiving chamber. The rubber cap is filled with grease and is installed between the joint body and the stud bolt. The grease storage is filled with extra grease for the ball of the stud bolt to smoothly move in the receiving chamber despite a shortage of the grease supplied from the rubber cap. The nipple insertion hole is formed on the head part and is connected to the receiving chamber. The injection nipple is installed in the nipple insertion hole. |
