Sealing device for a wheel-hub unit and wheel-hub unit equipped with such a sealing device
First Claim
1. A sealing device for a wheel-hub unit provided with a rolling bearing, the sealing device having a central axis and comprising a screen joined together with an outer ring of the bearing to sealingly isolate the bearing and having:
- a cylindrical mounting wall, coaxial with the central axis and engaged with a collar of an outer ring of the bearing; and
an annular reading wall, arranged transversely with respect to the axis, connected to the cylindrical wall and facing a phonic wheel mounted inside the bearing;
whereinthe annular reading wall has a thickness radially variable depending on an angle of oscillation of the phonic wheel between an undeformed position, in which an annular front surface of the phonic wheel is equidistant from a plane perpendicular to the axis, and a deflected position, in which the annular front surface of the phonic wheel is arranged equidistant from an annular reading wall, but does not make contact with the annular reading wall.
1 Assignment
0 Petitions
Accused Products
Abstract
Sealing device for a wheel-hub unit provided with a rolling bearing and having a central axis and being provided with a screen joined together with an outer ring of the bearing to sealingly isolate the bearing and having a cylindrical mounting wall coaxial with the central axis and engaged with a collar of an outer ring of the bearing, and an annular reading wall, arranged transversely with respect to the axis, connected to the cylindrical wall and facing a phonic wheel mounted inside the bearing; the annular reading wall having a thickness variable radially depending on an angle of oscillation of the phonic wheel between an undeformed position. An annular front surface of the phonic wheel is equidistant from a plane perpendicular to the axis, and a possible deflected position, in which the annular front surface of the phonic wheel is arranged equidistant from an annular reading wall.
7 Citations
4 Claims
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1. A sealing device for a wheel-hub unit provided with a rolling bearing, the sealing device having a central axis and comprising a screen joined together with an outer ring of the bearing to sealingly isolate the bearing and having:
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a cylindrical mounting wall, coaxial with the central axis and engaged with a collar of an outer ring of the bearing; and an annular reading wall, arranged transversely with respect to the axis, connected to the cylindrical wall and facing a phonic wheel mounted inside the bearing;
whereinthe annular reading wall has a thickness radially variable depending on an angle of oscillation of the phonic wheel between an undeformed position, in which an annular front surface of the phonic wheel is equidistant from a plane perpendicular to the axis, and a deflected position, in which the annular front surface of the phonic wheel is arranged equidistant from an annular reading wall, but does not make contact with the annular reading wall. - View Dependent Claims (2, 3)
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4. A wheel-hub unit comprising:
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an outer stationary ring, an inner rotating ring, a phonic wheel, at least one ring of revolving members arranged between the outer ring and the inner ring, and a sealing device comprising a screen joined together with an outer ring of the bearing to sealingly isolate the bearing and having; a cylindrical mounting wall, coaxial with the central axis and engaged with a collar of an outer ring of the bearing; and an annular reading wall, arranged transversely with respect to the axis, connected to the cylindrical wall and facing a phonic wheel mounted inside the bearing;
whereinthe annular reading wall of the sealing device has a thickness radially variable depending on an angle of oscillation of the phonic wheel between an undeformed position, in which an annular front surface of the phonic wheel is equidistant from a plane perpendicular to the axis, and a deflected position, in which the annular front surface of the phonic wheel is arranged equidistant from an annular reading wall, but does not make contact with the annular reading wall.
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Specification