| 摘要 |
The invention relates to polygonal hub for fully floating rear drive axle of a vehicle used in the break drum and wheel assembly comprising a hub (4) which rotates on the supporting member (10) of axle drive shaft assembled with inner bearing (5) and outer bearing (7) in the in the housing therein to enable rotate freely about an axis and are fixed in position with the said member (10); the complete wheel end assembly is then packed with lock nut (12). The said hub having a flange (15) carries wheel bolt (2) which provides seating for brake drum (1) and wheel rim and tightened with the use of wheel nut (3). The said hub (4) is formed by casting having central portion (17), which is the main portion of hub (4). The invention involves providing hexagonal shape to the central portion instead of circular shape of said hub. This makes hub 10% more strength to carry the various loads (i.e. vehicle GVW, cornering, braking & torque load) during different operating conditions of the wheel. Further a small hexagon formed on the each side of the said central hexagonal hub at outer half section peripheral. The said small hexagon outer half section of the peripheral intersects with central hexagon (17). The inner half portion of the hexagon (18) merges with central hexagon section (17). The intersecting hexagon edge (21) is so arranged that the two sides of the said small hexagon are parallel to central hexagon from two sides (22) respectively. The smaller hexagon (18) joins the central hexagon (17) with hub flange (15), giving the required strength and stiffness as shown in figures 1 and 3. |
