| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a wheel bearing with a sensor capable of compactly installing a load sensor to a vehicle, and precisely detecting a load on a wheel. <P>SOLUTION: The wheel bearing 10 with the sensor comprises a fixed wheel 1 having double-row rolling surfaces 4, a rolling wheel 2 having rolling surfaces 5 opposite to the rolling surfaces 4 of the fixed wheel 1, and double-row rolling elements 3 interposed between both the rolling surfaces 4, 5 opposite to each other. Wheels are rotatably supported to a vehicle body. At a peripheral surface on the bearing space side of the fixed wheel 1, a bypass member 15 having a magnetic flux generating portion generating magnetic flux and a magnetic flux detecting portion detecting the magnetic flux to at least one rolling element row is installed. Therefore, at least one magnetic circuit composed of a part of the fixed wheel 1, at least one rolling element 3, the bypass member 15, and an air gap is provided. An estimating means is provided which estimates an acting force between a tire and a road surface or the pre-load amount of the wheel bearing according to changes of magnetic resistance in the magnetic circuit obtained from a detection output of the magnetic flux detecting portion. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
