| 摘要 |
A vacuum cleaner with a main body, an upper body and a lower body. The upper body, in which a motor and dust collector are installed, is joined to the lower body, which supports the upper body and also allows the rotation of the upper body. Coupling means joins the upper body to the lower body so as to allow the upper body to rotate on the lower body. One of the coupling means is fixed on the upper body's bottom center, and the other end is a shaft that is joined to the lower body's top center. A bearing member is installed between the upper body's bottom and the lower body's top surface so as to reduce frictional resistance between the two components. The bearing member includes grooves formed on the top surface of the lower body, and balls seated in the grooves that move freely therein, thereby preventing damage to a connecting hose connecting the cleaner's cleaning attachment with the main body.
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