Suction port body for vacuum-cleaner and vacuum-cleaner having the same

A suction nozzle for attachment to a vacuum cleaner, said vacuum cleaner having a motor and capturing dust by providing air sucked in by operation of the motor through a filter, said suction nozzle being movable along a to-be-cleaned surface, the suction nozzle comprising:

• a suction port disposed proximate the to-be-cleaned surface, said suction port having at least one nozzle hole opening for sucking in said air, said at least one nozzle hole opening being formed in a part of an inner portion of a vertical wall surface defining an inside space of said suction port and being used to circulate and provide exhaust air from said motor,
• air leakage preventing means for preventing discharge of the air provided through said at least one nozzle hole opening from a gap between the suction nozzle and the to-be-cleaned surface, and
• a cleaning rotor having cleaning blades against which the exhaust air from said motor strikes,
• wherein said air leakage preventing means further comprises a main suction-nozzle section having a suction port through which said cleaning blades are exposed to a bottom wall opposite the to-be-cleaned surface, a main-section exhaust passage having a nozzle hole opening opposite to said cleaning blades and provided in said main suction nozzle section with the nozzle hole opening located on one side of said suction port in the width direction thereof, and a main-section suction passage provided in said main suction nozzle section and having a suction opening facing said nozzle hole opening across said suction port, said nozzle hole opening and said suction opening being arranged so that air provided from said nozzle hole opening and brought to said suction opening via said cleaning blades flows along said to-be-cleaned surface.

A suction nozzle for attachment to a vacuum cleaner, said vacuum cleaner having a motor and capturing dust by providing air sucked in by operation of the motor through a filter, said suction nozzle being movable along a to-be-cleaned surface, the suction nozzle comprising:

• a suction port disposed proximate the to-be-cleaned surface, said suction port having at least one nozzle hole opening for sucking in said air, said at least one nozzle hole opening being formed in a part of an inner portion of a vertical wall surface defining an inside space of said suction port and being used to circulate and provide exhaust air from said motor, and
• air leakage preventing means for preventing discharge of the air provided through said at least one nozzle hole opening from a gap between the suction nozzle and the to-be-cleaned surface,
• wherein said suction nozzle is cylindrical, and said air leakage preventing means comprises a connecting end portion having said suction port at the distal end thereof and having a proximal end communicating with the motor exhaust side,
• wherein said suction nozzle further includes a partition wall dividing a suction air passage, extending between the suction port and the connecting end portion and communicating with a suction side of said motor, and an exhaust air passage, communicating with the suction air passage at said suction port and communicating with the exhaust side of said motor, and which further comprises leaking means internally connecting said exhaust air passage to the atmosphere, thereby allowing some of the air flowing through the exhaust air passage to be expelled, and
• wherein said leaking means further comprises a bypass aperture provided in the partition wall and internally connecting said suction air passage and said exhaust air passage.

A suction nozzle for attachment to a vacuum cleaner, said vacuum cleaner having a motor and capturing dust by providing air sucked in by operation of the motor through a filter, said suction nozzle being movable along a to-be-cleaned surface, the suction nozzle comprising:

• a suction port disposed proximate the to-be-cleaned surface, said suction port having at least one nozzle hole opening for sucking in said air, said at least one nozzle hole opening being formed in a part of an inner portion of a vertical wall surface defining an inside space of said suction port and being used to circulate and provide exhaust air from said motor,
• air leakage preventing means for preventing discharge of the air provided through said at least one nozzle hole opening from a gap between the suction nozzle and the to-be-cleaned surface,
• a suction chamber proximate the suction port having a suction opening,
• a suction air passage communicating with said suction chamber,
• an exhaust air passage communicating with said suction chamber, and
• a nozzle hole opening for blowing exhaust air against the to-be-cleaned surface,
• wherein said air leakage preventing means further comprises an exhaust chamber for introducing the exhaust air from said exhaust air passage and blowing the exhaust air through said nozzle hole opening, said exhaust chamber having in a bottom wall thereof an opening adapted to be closed by the to-be-cleaned surface when said suction nozzle is placed on the to-be-cleaned surface, the opening being designed so that the exhaust air cannot be blown against the to-be-cleaned surface.

A suction nozzle for attachment to a vacuum cleaner, said vacuum cleaner having a motor and capturing dust by providing air sucked in by operation of the motor through a filter, said suction nozzle being movable along a to-be-cleaned surface, the suction nozzle comprising:

• a suction port disposed proximate the to-be-cleaned surface, said suction port having at least one nozzle hole opening for sucking in said air, said at least one nozzle hole opening being formed in a part of an inner portion of a vertical wall surface defining an inside space of said suction port and being used to circulate and provide exhaust air from said motor,
• air leakage preventing means for preventing discharge of the air provided through said at least one nozzle hole opening from a gap between the suction nozzle and said to-be-cleaned surface,
• a suction chamber proximate the suction port having a suction opening,
• a turbine chamber provided in the suction nozzle and communicating with said suction chamber,
• a cleaning rotor located in said suction chamber,
• a turbine located in said turbine chamber whose rotation causes the cleaning rotor to rotate,
• a suction air passage communicating with said suction chamber, and
• an exhaust air passage communicating with said turbine chamber, said suction air passage and a dust chamber of a cleaner body communicating with each other so that air in the suction chamber can be provided into the dust chamber, an exhaust side of the cleaner body and said exhaust air passage communicating with each other so that air discharged from the exhaust side of the motor can be provided into the turbine chamber to rotate the turbine and so that the air in the turbine chamber can be sucked into the suction chamber, whereby the air is circulated, wherein said air leakage preventing means includes an opening in the base of the suction nozzle, adapted to be closed by the to-be-cleaned surface when said suction nozzle is placed on the to-be-cleaned surface, the opening and said exhaust air passage communicating with each other, the opening being designed so that the exhaust air provided therefrom cannot be blown against the to-be-cleaned surface.

A suction nozzle for attachment to a vacuum cleaner, said vacuum cleaner having a motor and capturing dust by providing air sucked in by operation of the motor through a filter, said suction nozzle being movable along a to-be-cleaned surface, the suction nozzle comprising:

• a suction port disposed proximate the to-be-cleaned surface, said suction port having at least one nozzle hole opening for sucking in said air, said at least one nozzle hole opening being formed in a part of an inner portion of a vertical wall surface defining an inside space of said suction port and being used to circulate and provide exhaust air from said motor,
• air leakage preventing means for preventing discharge of the air provided through said at least one nozzle hole opening from a gap between the suction nozzle and said to-be-cleaned surface,
• a suction chamber proximate the suction port having a suction opening in a base of the suction nozzle,
• a turbine chamber provided in said suction nozzle and communicating with said suction chamber,
• a cleaning rotor located in said suction chamber,
• a turbine located in said turbine chamber whose rotation causes the cleaning rotor to rotate,
• a suction air passage communicating with said suction chamber,
• an exhaust air passage communicating with said turbine chamber, and
• a blow-off port for blowing exhaust air against the to-be-cleaned surface, said suction air passage and a dust chamber of a cleaner body communicating with each other so that air in the suction chamber is provided into the dust chamber, an exhaust side of the cleaner body and said exhaust air passage communicating with each other so that air discharged from the exhaust side is provided into the turbine chamber to rotate the turbine and that the air in the turbine chamber is provided into the suction chamber, whereby the air is circulated,
• wherein said air leakage preventing means includes an exhaust chamber for introducing the exhaust from said exhaust air passage and blowing the exhaust through said blow-off port, said exhaust chamber having in the bottom wall thereof an opening adapted to be closed by the to-be-cleaned surface when said suction nozzle is placed on the to-be-cleaned surface, the opening being designed so that the exhaust air cannot be blown against the to-be-cleaned surface.