Wheel bearing device
First Claim
1. A wheel bearing device for supporting a wheel such as to be rotatable relative to a vehicle body, comprising:
- an outer member having double-row outer races on an inner periphery thereof;
an inner member having double-row inner races respectively opposite the outer races on an outer periphery thereof;
double-row rollers interposed between the respective races of the outer member and the inner member; and
a wheel flange for attachment of a wheel provided to either one of the outer member and the inner member, wherein the bearing device has a negative bearing clearance whose dimension is controlled, and the bearing device includes rotation speed sensing means having a multipole encoder attached to a rotating member and a sensor for sensing a change in magnetic flux caused by rotation of the encoder, so as to determine speed of rotation of the rotating member based on detected data from the sensor.
1 Assignment
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Accused Products
Abstract
The bearing clearance is controlled to be negative by a dimensional control process so as to enhance bearing rigidity. A multipole encoder 81 is attached to a slinger, which is a rotating member, of a sealing assembly 13, and a sensor 82 for sensing a change in magnetic flux caused by rotation of the encoder 81 is provided to an outer member 10 that is the stationary side, so as to determine the speed of rotation of the rotating member based on detected data from the sensor 82. Because of the enhanced bearing rigidity, the air gap between the encoder 81 and the sensor 82 is accurately maintained even if moment load is applied to the bearing device.
21 Citations
11 Claims
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1. A wheel bearing device for supporting a wheel such as to be rotatable relative to a vehicle body, comprising:
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an outer member having double-row outer races on an inner periphery thereof;
an inner member having double-row inner races respectively opposite the outer races on an outer periphery thereof;
double-row rollers interposed between the respective races of the outer member and the inner member; and
a wheel flange for attachment of a wheel provided to either one of the outer member and the inner member, wherein the bearing device has a negative bearing clearance whose dimension is controlled, and the bearing device includes rotation speed sensing means having a multipole encoder attached to a rotating member and a sensor for sensing a change in magnetic flux caused by rotation of the encoder, so as to determine speed of rotation of the rotating member based on detected data from the sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification