Sensor-equipped bearing for wheel

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 double row rolling surfaces;
• an inner member having an outer periphery formed with rolling surfaces held in face-to-face relation with the rolling surfaces in the outer member;
• double row rolling elements interposed between the respective rolling surfaces in the outer and inner members;
• and
• a sensor assembly fitted to the peripheral surface of the stationary member in a fashion coaxial with the stationary member;
• wherein the sensor assembly includes electronic components comprising;
• a plurality of sensor units, each having a strain generating member fixed to a peripheral surface of one of the outer and inner members, which works as a stationary member, in contact therewith and a sensor fitted to the strain generating member for detecting a strain induced in the strain generating member,
• a signal processing IC for processing an output signal from the sensor, and
• a signal cable for transmitting the output signal so processed to the outside of the bearing assembly;
• and
• wherein the electric components are disposed inwardly of an annular protective covering to provide an annular sensor assembly.