SUSPENSION STRUCTURE FOR VEHICLE

摘要

A vehicle suspension structure includes a suspension arm and a ball joint. The suspension arm is connected between a suspension member and a vehicle-widthwise outer side end connected to a vehicle wheel. The ball joint connects the suspension arm and the vehicle wheel. When the vehicle receives an impact in the longitudinal direction, a socket of the ball joint pivots relative to a ball as the suspension arm deforms, and a flange portion on an open side of the socket interferes with a stud shaft of the ball joint. The interference causes the flange portion to deform and the ball to come out of the socket to undo the link with the vehicle wheel by the ball joint. Upon becoming unlinked, the vehicle wheel moves toward the vehicle-widthwise outer side and interference with the rear vehicle body is suppressed to limit deformation of the vehicle body.

主权项

1. A vehicle suspension structure comprising:
a suspension arm having a vehicle-widthwise inner side end connected to a suspension member and a vehicle-widthwise outer side end connected to a vehicle wheel; and a ball joint connecting the suspension arm and the vehicle wheel, the ball joint comprising a spherical body, a spherical housing accommodating the spherical body, and a shaft portion provided on the spherical body so as to extend outwardly from the spherical housing, the spherical housing being configured to pivot relative to the spherical body as the suspension arm deforms, and the spherical housing having an open end that interferes with the shaft portion causing the spherical body to come out of the spherical housing when the vehicle receives an impact in a longitudinal direction, and the suspension arm and the ball joint being configured such that a breaking load that breaks linking parts between the suspension arm and the suspension member, upon the vehicle receiving the impact in the longitudinal direction, is greater than a drop-off load where the spherical body of the ball joint comes out of the spherical housing upon the vehicle receiving the impact in the longitudinal direction.