Wheel structure

Details Wheel structure Wheel structure

B - Operations, Transporting

60

B

B60B 3/02 (2006.01) B60B 21/02 (2006.01) B60B 21/04 (2006.01)

Patent

CA 2389942

A large-diameter part 72 the diameter of which is larger than the diameter in the center is provided at the edges of a rim 32 via parts having difference in a level 43, 44, curled parts 46, 47 are provided to both edges of the rim by curling the large-diameter part 72 and each end face 73 of the curled parts 46, 47 is touched to the parts having difference in a level 43, 44. The rigidity of the side of the edge of the rim can be enhanced by providing the parts having difference in a level to the rim, as a result, the rigidity of the whole wheel can be more enhanced and in addition, as a disc and the rim are not required to be thickened, the weight of the wheel can be prevented from being increased.

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