| 摘要 |
PURPOSE: To reduce the weight of a double hose to form an air suction flow passage and an air discharge flow passage in a vacuum cleaner of discharged air circulation type. CONSTITUTION: In the vacuum cleaner in which an air discharge flow passage B to circulate the air discharged from an electric fan 5 is formed together with an air suction flow passage A in a hose 2, a pipe and a suction piece to be connected to a vacuum cleaner body 1 with the electric fan 5 built therein, the hose 2 is of double structure, a flexible hose (one-layer and two-wire hose 2b) in which a coil wire 21 with the electric conductivity and shape keeping property is built is used for an external hose to form the air discharge flow passage B, and a flexible hose (a conduit hose 2a) in which no coil wire is built is used for an internal hose to form the air suction flow passage A.
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