| CPC F16C 33/7879 (2013.01) [B60B 27/0073 (2013.01); F16C 19/186 (2013.01); F16C 33/7886 (2013.01); F16C 33/805 (2013.01); F16C 2326/02 (2013.01)] | 16 Claims |
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1. A vehicle wheel bearing for rotatably mounting and supporting a wheel of a vehicle to a vehicle body, comprising:
a wheel hub having a hub flange to which the wheel is mounted;
at least one inner ring mounted to one side of the wheel hub in a press-fitting manner;
an outer ring provided radially outward of the inner ring and having a mounting flange to be mounted to the vehicle body on an outer circumferential surface;
one or more rolling elements provided radially inward of the outer ring; and
a sealing member configured to prevent foreign matters from flowing into the vehicle wheel bearing,
wherein the sealing member comprises a first sealing member mounted to the wheel hub or the inner ring; and a second sealing member mounted to the outer ring,
wherein one or more elastic sealing lips are provided in one or both of the first sealing member and the second sealing member, and
wherein at least two radially recessed grooves are formed on a radial outer surface of some or all of the one or more elastic sealing lips such that a concave-convex structure is formed on the radial outer surface.
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7. A vehicle wheel bearing for rotatably mounting and supporting a wheel of a vehicle to a vehicle body, comprising:
a wheel hub having a hub flange to which the wheel is mounted;
at least one inner ring mounted to one side of the wheel hub in a press-fitting manner;
an outer ring provided radially outward of the inner ring and having a mounting flange to be mounted to the vehicle body on an outer circumferential surface;
one or more rolling elements provided radially inward of the outer ring; and
a sealing member configured to prevent foreign matters from flowing into the vehicle wheel bearing,
wherein the sealing member comprises a first sealing member mounted to the wheel hub or the inner ring; and a second sealing member mounted to the outer ring,
the first sealing member comprises a slinger mounted to the wheel hub in a press-fitting manner and a first elastic sealing portion attached to the slinger,
the second sealing member comprises a frame mounted to the outer ring in a press-fitting manner and a second elastic sealing portion attached to the frame,
the first elastic sealing portion comprises at least one first elastic sealing lip extending toward the second sealing member,
the second elastic sealing portion comprises a second elastic sealing lip extending toward the first sealing member and configured to perform a sealing function in cooperation with the at least one first elastic sealing lip; and an at least one third elastic sealing lip extending toward the first sealing member and configured to perform the sealing function in cooperation with the slinger, and
the at least one first elastic sealing lip and the second elastic sealing lip are disposed more radially outward than the at least one third elastic sealing lip while being not in contact with each other,
wherein end portions of the at least one first elastic sealing lip and the second elastic sealing lip extend radially outward to form an accommodation space S in which the foreign matters introduced from an outside is accommodated,
wherein the at least one first elastic sealing lip and the second elastic sealing lip are alternately disposed in a radial direction, and
wherein the at least one third elastic sealing lip comprises at least one contact sealing lip whose end is in contact with the slinger and at least one non-contact sealing lip whose end is disposed adjacent to the slinger.
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