| 摘要 |
A suction hose assembly for an upright type vacuum cleaner including a flexible hose connected to an air inlet of a cleaner body with one end thereof, a suction pipe connected to the other end of the flexible hose with one end thereof and connected to an extension hose of the suction brush with the other end thereof, and a connection portion for movably connecting the suction pipe to the flexible hose so that the suction pipe can rotate relative to the flexible hose in a rotational direction. The connection portion includes a pair of connection protrusions preferably formed on one end of either the suction pipe or flexible hose, and spaced from each other by a predetermined distance, a pair of connection grooves formed on one end of whichever the flexible hose or suction pipe that the connection protrusions are not formed on, to receive the pair of connection protrusions, and at least one guide protrusion provided between a contact surface defined between the connection protrusion s and a contact surface defined between the connection grooves, to reduce area of contact defined between the contact surfaces. Since the suction pipe and the flexible hose are rotatably connected with the other while presenting minimum relative contact due to the guide protrusions, thereby decreasing the frictionalresistance during the rotation of the suction pipe relative to the flexible hose. As a result, the suction pipe rotates more smoothly, and a us er can more easily use the cleaner with added convenience.
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