| 摘要 |
PURPOSE: A dust cover for a ball joint of a suspension of a vehicle is provided to effectively prevent the penetration of foreign materials with excellent airtightness by enlarging a contact area for the bottom side of a knuckle fixing part by forming an upper closed face into a level face contacting with the bottom side of the knuckle fixing part, to prevent the adherence of the ball joint caused by the penetration of the foreign materials, and to improve durability and expand the life span of the cover by enhancing the material and structure of an upper reinforcing frame. CONSTITUTION: A dust cover(10) for a ball joint of a suspension of a vehicle for preventing the inflow of dusts by closing the rim of a stud unit above a lower arm ball joint combined to a lower arm with filling the rim of the stud unit with a lubricant and supplying the lubricant to a friction surface at the lower side of the ball joint is a bell shape of which the upside is opened. The dust cover comprises an upper closed face(10a) formed at the upper end and contacted to the bottom side of a fixing part of a knuckle; a lower closed face(10b) formed at the lower end and contacted to the surface of a lower arm; a synthetic resin reinforcing frame disposed along the rim of the upper end; and a closing projection(10c) protruded along the inner peripheral surface adjacent to the lower closed face and contacted to the outer peripheral surface of the stud unit of the ball joint.
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