Ball round pin

The utility model belongs to the technical field of the car forging, especially, relate to a ball round pin. The structural strength that it had solved the prior art existence is poor, and the department of connecing connects technical problem such as unstability soon. This ball round pin includes the body of rod and fixes the bulb in body of rod one end, bulb outer wall circumference set up withthe endocentric sliding ring of bulb, sliding ring place plane perpendicular with the axis of the body of rod, the external diameter of sliding ring than the big 1mm of external diameter length of bulb, the bulb outer wall on have an interfacing plane who arranges the sliding ring both sides with the body of rod relatively in, the flat surface parallel in interfacing plane and sliding ring place,the centre of sphere side that has to the bulb of interfacing plane's middle part be the sunken spread groove of toper, the body of rod divide into canned paragraph, changeover portion, rear in properorder from one end to the