| 摘要 |
A wheel assembly for exerciser comprises a staged sleeve coupled to a foot and comprising a collar, a conic surface, and a fastening mechanism; and a cup-shaped flexible wheel comprising a multi-sided outer surface, an eccentric staged bore, an annular flange on a mouth of the bore, a conic surface extended inwardly from the flange, and a mating fastening mechanism at a bottom end. As to the assembled wheel and sleeve, the other end of the sleeve is engaged with the bottom edge of the wheel, the fastening mechanism is engaged with the mating fastening mechanism, the conic surface of the sleeve is urged against inside of the wheel, the collar is in contact with an internal side of the flange and is restrained from moving out of the flange. Also, a rotation of the wheel causes the mating fastening mechanism to move engagement with the fastening mechanism in a predetermined angle.
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