| 摘要 |
PROBLEM TO BE SOLVED: To provide a dust-collecting device for a vacuum cleaner which can increase the suction performance. SOLUTION: Air, dust and dirt which are sucked in from an inlet 12 are guided to a dust-collecting chamber 29 through a guiding path 41. In the linear section 52 of the guiding pipe 41, a cylindrical passage member 55 is arranged in such a manner that the axis may go in the extending direction of the linear section 52. On the channel member 55, a plurality of ventilation ports 47 are formed, and each ventilation port 47 is constituted in a manner to be covered with a mesh filter 50. When dust and dirt have been accumulated in the dust-collecting chamber 29 to a certain degree, air which flows in an introducing pipe 43 flows outside (a bypass 31 side) through the ventilation ports 47, and guided to an outlet by bypassing the dust-collecting chamber 29. COPYRIGHT: (C)2006,JPO&NCIPI
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