WHEEL SPEED SENSOR
First Claim
Patent Images
1. A rotation sensor assembly, comprising:
- a bearing including;
a first race having an outer edge,a second race,a plurality of ball bearings positioned between the first race and the second race,a carrier coupled to the second race and constructed of a material having a relatively high permeability, anda tone wheel coupled to the carrier, the tone wheel including a plurality of magnetic pole pairs distributed around a circumference of the tone wheel;
a spacer abutting the first race; and
a sensor mounted to the spacer and positioned adjacent the tone wheel, wherein the sensor is configured to sense rotation of the tone wheel relative to the sensor by sensing the magnetic pole pairs during said rotation.
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Abstract
A speed sensor assembly includes a bearing having a first race, a second race, a plurality of ball bearings separating the first race from the second race, and a tone wheel coupled to the second race. The speed sensor assembly also includes a spacer abutting the first race and a sensor positioned adjacent the tone wheel.
79 Citations
30 Claims
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1. A rotation sensor assembly, comprising:
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a bearing including; a first race having an outer edge, a second race, a plurality of ball bearings positioned between the first race and the second race, a carrier coupled to the second race and constructed of a material having a relatively high permeability, and a tone wheel coupled to the carrier, the tone wheel including a plurality of magnetic pole pairs distributed around a circumference of the tone wheel; a spacer abutting the first race; and a sensor mounted to the spacer and positioned adjacent the tone wheel, wherein the sensor is configured to sense rotation of the tone wheel relative to the sensor by sensing the magnetic pole pairs during said rotation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A bearing assembly for use with a speed sensor assembly, comprising:
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a first race having an outer edge; a second race having an outer edge; a plurality of ball bearings positioned between the first race and the second race, the ball bearings positioned inwardly of the outer edges of the first race and the second race; and a tone wheel coupled to the second race, the tone wheel including a plurality of magnetic pole pairs distributed around a circumference of the tone wheel, wherein the entire tone wheel is positioned inwardly of the outer edge of the second race, such that a space is defined between the tone wheel and the outer edge of the second race. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A bearing assembly for use with a speed sensor assembly, comprising:
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a first race; a second race positioned to define an annular space between the first race and the second race; a plurality of ball bearings positioned in the annular space and separating the first race from the second race; a tone wheel coupled to the second race and positioned at least partially within the annular space, the tone wheel including a plurality of magnetic pole pairs distributed around a circumference of the tone wheel; and a flinger coupled to one of the first race and the second race and positioned outwardly of the tone wheel, such that the flinger at least partially covers the annular space and separates the tone wheel from an exterior of the bearing assembly. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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25. A rotation sensor assembly, comprising:
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a first race; a second race; a plurality of ball bearings positioned between the first race and the second race; a tone wheel coupled to the second race and positioned at least partially within the annular space, the tone wheel including a plurality of magnetic pole pairs distributed around a circumference of the tone wheel; a sensor positioned adjacent the tone wheel, wherein the sensor is configured to sense rotation of the tone wheel relative to the sensor by sensing the magnetic pole pairs during said rotation; and a flinger coupled to one of the first race and the second race and positioned between the tone wheel and the sensor. - View Dependent Claims (26, 27, 28, 29, 30)
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Specification