| 摘要 |
A castor assembly includes an upright support shaft, a leg mounted on the support shaft and a pressing sleeve mounted between the upper end of the support shaft and the leg. The upper end of the support shaft has a retaining groove. The pressing sleeve has an inner wall provided with an inner flange retained in the retaining groove of the support shaft and an outer wall provided with an outer flange. The leg has an end portion provided with a receiving space pressing the outer flange of the pressing sleeve. Thus, the support shaft is combined with the leg by the pressing sleeve to prevent from defining a gap between the support shaft and the leg so that the support shaft will not hit the leg so as to prevent from producing noise or vibration.
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