US 12,257,874 B2
Ball joint assembly for vehicle, stabilizer link including same, and method for manufacturing ball joint assembly for vehicle
Hee Mun Jeong, Seoul (KR); and Hyun Ho Park, Seoul (KR)
Assigned to ILJIN CO., LTD., Gyeongju-si (KR)
Filed by ILJIN CO., LTD., Gyeongju-si (KR)
Filed on Dec. 7, 2020, as Appl. No. 17/113,686.
Application 17/113,686 is a continuation of application No. PCT/KR2018/015846, filed on Dec. 13, 2018.
Claims priority of application No. 10-2018-0066360 (KR), filed on Jun. 8, 2018.
Prior Publication US 2021/0086575 A1, Mar. 25, 2021
Int. Cl. B60G 7/00 (2006.01); F16C 11/06 (2006.01)
CPC B60G 7/005 (2013.01) [F16C 11/0633 (2013.01); B60G 2204/416 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A ball joint assembly for vehicle, comprising:
a mounting part having an inner circumferential portion in which a hole is formed in an up-down direction;
a ball stud including a ball and a stud extending from the ball;
a bearing coupled to surround the ball and disposed in the hole; and
an insert molding part configured to fill a space formed between the inner circumferential portion and an outer surface of the bearing in the hole and configured to close one end of the hole,
wherein the inner circumferential portion includes at least one upper protruded portion which protrudes in a direction toward a central axis of the hole in an upper region, and at least one lower protruded portion which protrudes in the direction toward the central axis in a lower region,
wherein the at least one upper protruded portion and the at least one lower protruded portion, which are adjacent to each other in a circumferential direction, are arranged to border on each other in the circumferential direction or arranged to be spaced apart from each other in the circumferential direction when viewed from the top,
wherein the at least one upper protruded portion and the at least one lower protruded portion are arranged so as not to overlap each other when viewed from the top, and
wherein the insert molding part includes an upper engagement portion that fills a gap between a protruded end of the at least one upper protruded portion and the outer surface of the bearing, a lower engagement portion that fills a gap between a protruded end of the at least one lower protruded portion and the outer surface of the bearing, a middle engagement portion that fills a space extending in an axial direction between the upper protruded portion and the lower protruded portion, an upper cover portion that covers an upper surface of the upper protruded portion, and a lower cover portion that covers a lower surface of the lower protruded portion.