The outer end surface (22a) of the outer race (22) of the outer roller bearing (14) in the vehicle width direction is positioned further toward the inside in the vehicle width direction than the outer end surface (21a) of the inner race (21) in the vehicle width direction. A vehicle width direction inner end surface (31) of a nut flange portion (26) of the hub nut (15) is formed in a planar shape orthogonal to an axial center (CL) of the axle housing (11). A region (32) of the nut flange section (26) on the inside in the radial direction of an inner end surface (31) in the vehicle width direction is in surface contact with an outer end surface (21a) of an inner race (21) of the outer roller bearing (14) in the vehicle width direction. The region of the nut flange section (26) on the outside in the radial direction of the vehicle width direction inner end surface (31) faces the vehicle width direction outer end surface (22a) of the outer race (22) of the outer roller bearing (14) at a position separated outward in the vehicle width direction from the vehicle width direction outer end surface (22a) of the outer race (22).
外侧滚子轴承(14)的外座圈(22)的车宽方向外端面(22a)位于比内座圈(21)的车宽方向外端面(21a)靠车宽方向内侧处。轮毂螺母(15)的螺母法兰部(26)的车宽方向内端面(31)形成为相对于车桥壳(11)的轴心(CL)正交的平面状。螺母法兰部(26)的车宽方向内端面(31)的径向内侧的区域(32)与外侧滚子轴承(14)的内座圈(21)的车宽方向外端面(21a)面接触。螺母法兰部(26)的车宽方向内端面(31)的径向外侧的区域在从外侧滚子轴承(14)的外座圈(22)的车宽方向外端面(22a)向车宽方向外侧分离的位置与外座圈(22)的车宽方向外端面(22a)相对。
Hub anti-falling structure
轮毂防脱结构
2022-10-11
Patent
Elektronische Ressource
Chinesisch
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