Patent ID: 7604413

Claim:
A wheel support bearing assembly with a built-in load sensor, which assembly is operable to support a wheel rotatably relative to a vehicle body and comprises: an outer member having an inner peripheral surface formed with double rows of raceway surfaces; an inner member having an outer peripheral surface formed with double rows of raceway surfaces in face-to-face relation with the double rows of the raceway surfaces of the outer member; double rows of rolling elements interposed between those raceway surfaces of the outer member and the inner member; a first angle detecting sensor including a to-be-detected part provided in the inner member and a corresponding detecting part provided in the outer member in face-to-face relation with the to-be-detected part provided in the inner member; a second angle detecting sensor including a to-be-detected part provided in an outer race of a constant velocity universal joint that is coupled with the inner member, and a corresponding detecting part provided in the outer race in face-to-face relation with the to-be-detected part provided in the outer race; and a load conversion unit for comparing respective detection signals from the detecting parts of the first and second angle detecting sensors to detect a relative angular difference between the inner member and the constant velocity universal joint to thereby detect a load acting on the wheel support bearing assembly.