| abstract |
In a conventional vacuum cleaner, it is necessary to increase the suction pressure generated from a built-in electric blower in order to further reduce the pressure inside the floor suction tool in order to achieve higher dust collection performance. Had problems. SOLUTION: Protrusions 25a and 25b are provided below a floor suction tool 24, and flow passage blocking parts 42 and 43 are provided around an opening 41, which are in contact with the floor surface and open. Since the suction to the floor 41 can be blocked and the inside of the floor suction tool 24 can be decompressed, the flow path blocking sections 42 and 43 can then move away from the floor surface and resume the suction of the opening 41. Then, the pressure inside the floor suction tool 24 is further reduced, and then the suction is resumed. As a result, the suction force at the opening 41 is increased at a moment when the suction is resumed. Dust that is firmly entangled on the surface and dust that has entered the joints such as the deep part of the carpet or flooring can be sucked in. [Selection] Figure 1 |