SENSOR-INTEGRATED BEARING FOR WHEEL

摘要

A sensor-integrated bearing for a wheel can, without being affected by rolling bodies, accurately detect a load acting on the wheel. The bearing has the rolling bodies (5) arranged between an outer member (1) and an inner member (2), and also has one or more sensor units (20) mounted to either of the inner and outer members (2, 1) which is a stationary member. Each sensor unit (20) has a deforming member (21) having two or more contact stationary sections (21a) in contact with and fixed to the stationary member, and also has two or more sensors (22A, 22B) mounted to the deforming member (21) and detecting deformation of the deforming member (21). The two or more contact stationary sections (21a) are arranged on the outer diameter surface of the stationary member so as to be located at the same axial position in a circumferentially separated manner. The bearing also has estimation means (30) for estimating, from the sum of output signals (A, B) from the two or more sensors (22A, 22B), a load acting on the bearing.