| 摘要 |
A wheel bearing according to an embodiment of the present invention comprises: a hub disposed around a rotation shaft as a center thereof; an outer wheel disposed outside of the hub to surround the hub; a rolling member disposed between the hub and the outer wheel; and a sealing member adjacent to the rolling member to seal a region between the hub and the outer wheel. The sealing member may include: an outer member facing an outer circumferential surface of the outer wheel at an outboard side; a rib fixed to an inner circumferential surface of the outer member and having an end part slidably and tightly contacting the outer circumferential surface of the outer wheel; and a fixing member having a side portion connected to the outer member and having an inner circumferential surface tightly contacting the hub and fixed thereto. Thus, an inner circumferential surface of the sealing member at a side thereof is press-fitted on an outer circumferential surface of the hub at the inside thereof and is thus brought into tight contact with the outer circumferential surface, thereby making a coupling structure sturdy, and a rubber or an adhesive is applied between the sealing member and an inner surface of the hub at an inboard side, thereby preventing corrosion of a contact surface of the hub. In addition, the rib of the sealing member slidably and tightly contacts the outer circumferential surface of the outer wheel, and a contact surface of the outer wheel contacting the rib is inclined to decrease in distance from the central axis thereof toward the inboard side, thereby preventing moisture from moving toward the rib. |
