Patent ID: 9133931
Filing Date: 2015-09-15
Classification: B60G,F16C,F16J,Y10T

Abstract:
1. A ball stud assembly comprising: a ball stud comprising: a stud portion with an approximately columnar shape; and a ball portion that is formed at an end of the stud portion; and a dust cover that is attached to the stud portion, wherein: the stud portion is formed with (i) a seal portion having a circular cross section, (ii) an annular flange that projects radially outwardly at a first circumferential portion axially apart from the ball portion, and (iii) an annular projection that projects radially outwardly at a second circumferential portion at an axial side of the seal portion opposite to the flange adjacent the ball portion, an axial cross section of the flange has a root side end point at a peripheral edge of the flange which is located at a ball portion side, and an outer circumferential point at the peripheral edge of the flange which is located at a position radially outward from the root side end point and opposite to the ball portion side, the axial cross section of the flange being concave with respect to a straight line that connects the root side end point and the outer circumferential point, thereby defining an annular concave portion, the dust cover includes an annular lip that is abutted on the seal portion of the ball stud, the lip has an end that is formed with an annular side lip portion, and the side lip portion has a shape corresponding to the concave portion so as to be abutted on the concave portion, and the side lip portion has a circumferential end adjacent the outer circumferential point of the axial cross section of the flange and has a shape such that the side lip portion is elastically deformed to a radially outward direction by abutting on the concave portion of the flange, whereby surface pressure is a maximum at the circumferential end when abutted on the concave portion of the flange.