Patent ID: 9014992
Filing Date: 2015-04-21
Classification: B60B,F16C,G01L

Abstract:
1. A sensor equipped wheel support bearing assembly for rotatably supporting a vehicle wheel relative to a vehicle body structure, comprising: an outer member having an inner periphery formed with a plurality of rows of rolling surfaces; an inner member having an outer periphery formed with rolling surfaces opposed to the rolling surface referred to above; a plurality of rows of rolling elements interposed between the respective opposed rolling surfaces defined in the outer and inner members; one or more load detecting sensor units provided in one of the outer and inner members, which serves as a stationary member, for detecting a load imposed on the wheel support bearing assembly, each sensor unit including a strain generating member, having two or more contact fixing segments secured to the stationary member in contact therewith, and two or more sensors fitted to the strain generating member for detecting a strain occurring in the strain generating member, the two or more contact fixing segments being so arranged as to occupy the same axial positions of an outer diametric surface of the stationary member and as to occupy respective positions spaced from each other in a circumferential direction; and a calculating section to calculate a load acting on the wheel support bearing assembly by the sum of respective outputs of the two or more sensors, wherein two of the two or more contact fixing segments, which are positioned at respective ends in the circumferential direction, are spaced from each other in the circumferential direction a distance equal to the pitch of arrangement of the rolling elements, the pitch of arrangement of the rolling elements being a distance between centers of the rolling elements as arranged between the rolling surfaces.