Hub unit with sensor
A hub unit having a sensor comprises a hub unit 1 having a wheel-side raceway member 4 , a body-side raceway member 5 and two rows of rolling bodies 6 , and a sensor device 2 provided on the hub unit 1 . The body-side raceway member 5 has a cylindrical portion 16 and a flange portion 17 provided with an insertion hole for a bolt for fastening the hub unit 1 to a vehicle body. The sensor device 2 has a magnetic sensor 31 supported by a support member 33 fixed to the flange portion 17 and serving as a displacement sensor for detecting variations in the distance between the sensor and the cylindrical portion 16 . A magnetized portion 34 is provided on the cylindrical portion 16 at a location opposed to the sensor.
1. A hub unit having a sensor, comprising:
a hub unit having a wheel-side raceway member for a wheel connectable thereto;
a body-side raceway member to be attached to a vehicle body and two rows of rolling bodies arranged between the two raceway members; and
a sensor device provided on the hub unit, the body-side raceway member having a cylindrical portion and a flange portion provided with an insertion hole for a bolt for fastening the hub unit to the vehicle body,
the hub unit having a sensor being characterized in that the sensor device has a sensor affixed to the curved base end part of the flange portion for detecting the amount of deformation of the location and processing means for determining a ground contact load from the output of the sensor.
2. A hub unit having a sensor according to claim 1 wherein the sensor is provided at a curved boundary surface between the outer peripheral part of the cylindrical portion of the body-side raceway member and the inside of the flange portion thereof.
3. A hub unit having a sensor according to claim 1 wherein the curved boundary surface is consecutive toward the inside of the flange portion of the body-side raceway member.
4. A hub unit having a sensor according to claim 1 wherein the sensor is affixed to the location with an adhesive.
5. A hub unit having a sensor according to claim 1 wherein the sensor is affixed to the curved boundary surface with an adhesive.
6. A hub unit having a sensor, comprising:
a hub unit having a wheel-side raceway member for a wheel connectable thereto;
a body-side raceway member to be attached to a vehicle body and two rows of rolling bodies arranged between the two raceway members; and
a sensor device provided on the hub unit, the body-side raceway member having a cylindrical portion and a flange portion provided with an insertion hole for a bolt for fastening the hub unit to the vehicle body,
the hub unit having a sensor being characterized in that the sensor device has a sensor for detecting the amount of deformation of the flange portion of the body-side raceway member and processing means for determining a ground contact load from the output of the sensor,
wherein the sensor is a displacement sensor supported by a support member that extends axially from one of the cylindrical portion of the body-side raceway member and the flange portion thereof for detecting the distance between the displacement sensor and the other portion.
7. A hub unit having a sensor according to claim 6 wherein the displacement sensor is a magnetic sensor provided on a forward end of the support member for detecting variations in the distance from the displacement sensor to an outer periphery of the cylindrical portion of the body-side raceway member, and a magnetized portion is provided on the other portion of the body-side raceway member which portion is not provided with the support member, at a location opposed to the sensor.
8. A hub unit having a sensor according to claim 6 wherein the displacement sensor is a displacement sensor of the inductance type provided on a forward end of the support member for detecting variations in the distance from the displacement sensor to the other portion of the body-side raceway member which portion is not provided with the support member.
9. A hub unit having a sensor, comprising:
a hub unit having a wheel-side raceway member for a wheel connectable thereto;
a body-side raceway member to be attached to a vehicle body and two rows of rolling bodies arranged between the two raceway members; and
a sensor device provided on the hub unit, the body-side raceway member having a cylindrical portion and a flange portion provided with an insertion hole for a bolt for fastening the hub unit to the vehicle body,
the hub unit having a sensor being characterized in that the sensor device has a sensor for detecting the amount of deformation of the flange portion of the body-side raceway member and processing means for determining a ground contact load from the output of the sensor,
wherein the sensor is a displacement sensor supported by a support member that extends radially from the cylindrical portion of the body-side raceway member for detecting the distance between the displacement sensor and the other portion.