| 摘要 |
PROBLEM TO BE SOLVED: To provide a wheel bearing which enables compact installation of a load sensor on a vehicle, and accurate detection of a load applied to a wheel. SOLUTION: This wheel bearing 10 with a sensor is equipped with a fixed ring 1 having two rows of rolling surfaces 4A, 4B, a rotating ring 2 having rolling surfaces 5A, 5B opposite to the rolling surfaces 4A, 4B of this fixed ring 1, and a plurality of rows of rolling elements 9A, 9B interposed in between individual opposed rolling surfaces 4A (4B), 5A (5B), and rotatably supports the wheel with respect to the vehicle body. Each of the plurality of rows of elements 9A, 9B is provided with a load detection means 15A, 15B for detecting a change in load by action force between a tire and a road surface or a pre-load amount of the wheel bearing, and a rolling-element phase-difference detection means 16 for calculating the phase difference between the plurality of rows of elements 9A, 9B. Moreover, a correction means 17 is provided for correcting the output signal of the load detection means 15A by the phase difference between the rolling elements found with this detection means 16. COPYRIGHT: (C)2008,JPO&INPIT
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