A suction head for a vacuum cleaner comprising a base plate with a base plate channel open towards a surface to be vacuumed and a suction channel in fluid communication with the base plate channel is described. Said suction channel comprises an inner tube and an outer tube, wherein the inner tube is fixed to the base plate channel and the outer tube is rotatable telescopically with respect to the inner tube.

A vacuum cleaner includes a vacuum suction pipe through which impurities are collected together with air. A suction side plate has a central hole which corresponds with the vacuum suction pipe so that the vacuum suction pipe is fitted in the central hole. A holding plate is spaced apart from the suction side plate. A spring unit connects the suction side plate with the holding plate to elastically adjust a distance between the suction side plate and the holding plate.

A vacuum cleaner includes a vacuum suction pipe through which impurities are collected together with air. A suction side plate has a central hole which corresponds with the vacuum suction pipe so that the vacuum suction pipe is fitted in the central hole. A holding plate is spaced apart from the suction side plate. A spring unit connects the suction side plate with the holding plate to elastically adjust a distance between the suction side plate and the holding plate.

A hand vacuum cleaner has a cleaner body and a post-motor filter is positioned in the air flow passage downstream from and aligned with the suction motor and, the post-motor filter and the cleaner body are separable.

A hand vacuum cleaner has a cleaner body and a post-motor filter is positioned in the air flow passage downstream from and aligned with the suction motor and, the post-motor filter and the cleaner body are separable.

A vacuum hose has a switch that allows an operator to selectively send control signals to a transceiver to control the operation of a central vacuum unit. The switch may be located on a cuff or nozzle defining a distal end of the vacuum hose. The switch is not located on a head unit that couples to the cuff or nozzle and not located on a wall-mounted valve. The switch can be an energy harvesting switch that requires no batteries or no dedicated power source (i.e., not hardwired).

A vacuum hose has a switch that allows an operator to selectively send control signals to a transceiver to control the operation of a central vacuum unit. The switch may be located on a cuff or nozzle defining a distal end of the vacuum hose. The switch is not located on a head unit that couples to the cuff or nozzle and not located on a wall-mounted valve. The switch can be an energy harvesting switch that requires no batteries or no dedicated power source (i.e., not hardwired).

An adaptor assembly and a suction nozzle which includes the adaptor assembly. The adaptor assembly works with the outlet port part of a suction nozzle to adapt the suction nozzle with the extension pipe of a vacuum cleaner in a sealed manner. The adapter assembly includes a tube body with a fitting end to fit the outlet port part and a flange end with a flange for inserting into the extension pipe. A moving and positioning unit is located between the fitting and flange ends, and includes a base part fixed on the tube body and a mobile part cooperating with the base part. An elastic seal ring sleeves around the flange end and includes one end butting against the flange and another end butting against the mobile part. The elastic seal ring arch outwardly and come into tight contact with internal surface of the extension pipe.

An adaptor assembly and a suction nozzle which includes the adaptor assembly. The adaptor assembly works with the outlet port part of a suction nozzle to adapt the suction nozzle with the extension pipe of a vacuum cleaner in a sealed manner. The adapter assembly includes a tube body with a fitting end to fit the outlet port part and a flange end with a flange for inserting into the extension pipe. A moving and positioning unit is located between the fitting and flange ends, and includes a base part fixed on the tube body and a mobile part cooperating with the base part. An elastic seal ring sleeves around the flange end and includes one end butting against the flange and another end butting against the mobile part. The elastic seal ring arch outwardly and come into tight contact with internal surface of the extension pipe.

A base plate for a suction head for vacuum cleaners or a similar electric household appliance is described, said base plate comprising a lower face configured as to be directed towards the surface to be vacuumed, an opposite upper surface and a base plate channel open towards the surface to be vacuumed, wherein the base plate channel comprises a front edge and a rear edge, wherein at least the surface of the lower face which extends along the front edge of the base plate channel and at least the surface of the lower face which extends along the rear edge of the base plate channel lie in a same plane.