| 摘要 |
PROBLEM TO BE SOLVED: To provide a bearing for wheel with sensor precisely detecting a load on a wheel in any load condition. SOLUTION: The wheel for bearing includes a rolling element 5 interposed between a plurality of raceways 3, 4 in which an outer member 1 and an inner member 2 are disposed opposite each other. At least three sensor units 20 are provided on the outer diameter surface of the fixing-side member from among the outer member 1 and the inner member 2. The sensor unit 20 includes a strain generation member 21 consists of: two or more contact fixing members fixed by being brought into contact with the outer diameter surface on the fixing-side member; and one or more sensors 22 attached to the strain generation member 21 and detecting the strain of the strain generation member 21. Load estimation means 31, 32 are provided, which estimate a radial load acting on the bearing for wheel in the radial direction and an axial load acting on the bearing for wheel in the axial direction from output signals of the sensors 22 of the three or more sensor units 20. COPYRIGHT: (C)2010,JPO&INPIT
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