Adjustable ball joint
An apparatus is described for interconnecting a steering knuckle and lower suspension arm. The apparatus includes a ball joint assembly having a height adjustment feature and a non-concentric ball and shaft that together allow for increased range of camber adjustment.
1. A dual-adjustment joint apparatus securable to a steering knuckle and a control arm of a vehicle, the joint apparatus comprising:
a housing defining a cavity and an opening to the cavity, and a housing axis extending through the cavity and the opening, the housing having an external threading at an outer surface thereof;
a joint stud having a first end portion, a second end portion, and a mid portion connecting the first and second end portions, the first end portion having a first central longitudinal axis extending from a first end of the joint stud to the mid portion, and the second end portion having a second central longitudinal axis extending from a second end of the joint stud to the mid portion, wherein the first and second central longitudinal axes are parallel to one another and not coincident, the first end portion being pivotally receivable in the cavity through the opening;
a mounting base securable to one of the steering knuckle and the control arm, the mounting base having a threaded aperture for threadable engagement with the external threading of the housing, wherein the housing is axially adjustable along the housing axis through selective threadable engagement of the housing with the threaded aperture of the mounting base; and
a first locking means for locking an axial position of the housing with respect to the mounting base.
2. The dual-adjustment joint apparatus as in claim 1 wherein the first end portion of the joint stud includes a spherical surface, and the second end portion of the joint stud includes external threading.
3. The dual-adjustment joint apparatus as in claim 2 wherein the first locking means includes a jamb nut that is threadably engageable with the external threading of the housing.
4. The dual-adjustment joint apparatus as in claim 3 wherein the jamb nut is axially bearable against the mounting base along the housing axis.
5. The dual-adjustment joint apparatus as in claim 4 , including a joint cup defining a receptacle that is configured for engagement of the first end portion of the joint stud, the joint cup being receivable in the cavity of the housing.
6. The dual-adjustment joint apparatus as in claim 5 wherein the receptacle is configured for engagement with the spherical surface of the first end portion.
7. The dual-adjustment joint apparatus as in claim 5 wherein the joint cup includes a flange.
8. The dual-adjustment joint apparatus as in claim 7 , including a compression member threadably engageable with the external threading of the housing to secure the first end portion of the joint stud within the receptacle of the joint cup.
9. The dual-adjustment joint apparatus as in claim 8 wherein the housing is axially adjustable along the housing axis with respect to the mounting base to thereby adjust a separation distance between the steering knuckle and the control arm.