| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a wheel bearing with a sensor unaffected by temperature or slipping between a knuckle and flange surfaces or the like, and capable of accurately detecting a load acting on the wheel bearing or a tire tread. <P>SOLUTION: The wheel bearing comprises one or more sensor units 20 provided in the fixed-side member out of an outer member 1 and an inner member 2. The sensor unit 20 includes a distortion-generating member 21 having two or more contact fixed parts 21a fixed in contact with the fixed-side member, and two or more sensors 22A, 22B fixed to the distortion-generating member 21 for detecting the distortion of the distortion-generating member 21. The two or more contact fixed parts 21a are arranged at the same position in the axial direction and spaced in the circumferential direction on the outer diameter surface of the fixed-side member. An estimation means for estimating a load acting on the wheel bearing from the difference between output signals A, B of the two or more sensors 22A, 22B is provided. This estimation means calculates either the amplitude of the output signals, or a value corresponding to the amplitude, from the difference between the output signals A, B of the sensors 22A, 22B. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
