WHEEL BEARING WITH SENSOR

摘要

PROBLEM TO BE SOLVED: To provide a wheel bearing with a sensor which can be compactly installed in a vehicle for detecting a load. SOLUTION: The wheel bearing in which double-row rolling elements 3 are laid between an outward member 1 and an inward member 2 comprises a sensor unit 21 mounted to a fixed side member out of the outward member 1 and the inward member 2. The sensor unit 21 is composed of a sensor mounting member 22 and a distortion sensor 23 mounted to the sensor mounting member 22. An estimating means 31 is provided for estimating an outer force on the wheel bearing, an operating force between a tire and a road surface or a preload mount of the wheel bearing from the output of the distortion sensor 23 of the sensor unit 21. The sensor mounting member 22 has a plurality of contact fixed portions fixed to at least two positions apart from the outward member 1 in its circumferential direction. The distortion sensor 23 is mounted to at least one of the plurality of contact fixed portions. COPYRIGHT: (C)2008,JPO&INPIT