| 摘要 |
A wheel bearing having a hub and an inner ring according to one embodiment of the present invention comprises a hub arranged to be able to rotate; an inner ring coupled with the hub; an outer ring arranged to be separated by a predetermined distance from the outer circumference surface of the inner ring; a cloud member inserted between the inner ring and the outer ring; and a coupling part coupled to the end parts at the inner side of a vehicle body of the hub and the inner ring and rotating together with the hub and the inner ring, wherein an inner ring spline and a hub spline are formed respectively on the end parts at the inner side of a vehicle body of the inner ring and the hub, and wherein a coupling part spline engaging with the inner ring spline and the hub spline can be formed on the coupling part. The hub spline and the inner ring spline can be formed along an inclined line having a distance from a rotational axis increasing in a direction from the outer side of a vehicle body to the inner side of the vehicle body. Therefore, the wheel bearing having a hub and an inner ring according to one embodiment of the present invention can reduce the total weight thereof by forming the hub spline and the inner ring spline respectively on the hub and the inner ring. The present invention can minimize creep by coupling a coupling part spline to the hub spline and the inner ring spline and preventing the inner ring from rotating in the hub. Also the present invention can improve the whole torque transmission efficiency by transmitting the rotational force of the coupling part to the hub and the inner ring simultaneously. |
