A buckle mechanism of a dust collecting barrel of a two-stage dust collector is provided. The buckle mechanism is disposed on the two-stage dust collector, and includes a first retaining seat and a second retaining seat corresponding to one side of the dust collector, and a support unit is disposed on a barrel cover. The first retaining seat is pivotally connected with a linking unit. One end of the linking unit is connected to the support unit. The second retaining seat is pivotally connected with a control unit. The linking unit is driven to actuate through two connecting members. The control unit drives the linking unit to actuate. By the lever principle, the linking unit drives the barrel cover to move up and down so as to assemble and disassemble the dust collecting barrel quickly and conveniently.

An upright vacuum cleaner (1) is provided, including a brushroll assembly (100), a motor assembly (200) and a body assembly (300). The brushroll assembly (200) includes a brushroll casing (12) and a brushroll (11). The motor assembly (200) includes a motor housing (21) and a motor (22), and the motor (22) drives the brushroll (11) to roll via a drive belt (13). The body assembly (300) includes a body (31) and a bridging member (32) mounted to the body (31), and the bridging member (32) is pivotably connected with the motor housing (21) to allow the body (31) to be rotatable between an upright position and an oblique position. When the body (31) is rotated from the upright position to the oblique position, the bridging member (32) pushes the brushroll casing (12) to move in a direction running away from the motor housing (21) so as to tension the drive belt (13).

A vacuum cleaner comprising: a suction device; an extendable inlet nozzle in fluid communication with the suction device, the extendable inlet nozzle being extendable from a first operable position to a second operable position; a proximity sensor for detecting a surface; and a controller configured to change the suction power of the suction device in dependence on a signal from the proximity sensor and in dependence on the position of the extendable inlet nozzle.

A vacuum cleaner comprising: a suction device; an extendable inlet nozzle in fluid communication with the suction device, the extendable inlet nozzle being extendable from a first operable position to a second operable position; a proximity sensor for detecting a surface; and a controller configured to change the suction power of the suction device in dependence on a signal from the proximity sensor and in dependence on the position of the extendable inlet nozzle.

A vacuum cleaner includes a suction nozzle defining a nozzle inlet, a manual nozzle height adjustment assembly for adjusting the height of the nozzle inlet relative to a surface to be cleaned, and a bleed valve fluidly connected to a working air path of the vacuum cleaner to selectively open to reduce suction at the nozzle inlet. The bleed valve is incorporated with the nozzle height adjustment assembly such that movement of the nozzle height adjustment assembly between different height settings will automatically open or close the bleed valve.

A vacuum cleaner includes a suction nozzle defining a nozzle inlet, a manual nozzle height adjustment assembly for adjusting the height of the nozzle inlet relative to a surface to be cleaned, and a bleed valve fluidly connected to a working air path of the vacuum cleaner to selectively open to reduce suction at the nozzle inlet. The bleed valve is incorporated with the nozzle height adjustment assembly such that movement of the nozzle height adjustment assembly between different height settings will automatically open or close the bleed valve.

The present disclosure provides a lifting device for cleaning assembly and a cleaning apparatus. The lifting device includes a guiding base and a lifting assembly. The guiding base is arranged on an external housing. The lifting assembly includes a lifting mechanism connected with the cleaning assembly and slidably coupled to the guiding base, and a driving member arranged on the guiding base and configured to drive the lifting mechanism to move with respect to the guiding base.

A vacuum cleaner includes an upright body mounted to a base that moves over a surface to be cleaned. A rotational coupling can be provided between the upright body and the base for coupling the upright body to the base for movement about at least one rotational axis. The rotational coupling can include at least a swivel joint. A cord rewinder can be provided above the swivel joint for storing and dispensing a power cord.

A nozzle assembly for a vacuum cleaner includes a driving member including a first driving shaft and a second driving shaft in both sides thereof, a first drum of which one end is coupled to the first driving shaft to be driven by directly receiving driving force of the first driving shaft, and a second drum of which one end is coupled to the second driving shaft to be driven by directly receiving driving force of the second driving shaft.

A nozzle assembly for a vacuum cleaner includes a driving member including a first driving shaft and a second driving shaft in both sides thereof, a first drum of which one end is coupled to the first driving shaft to be driven by directly receiving driving force of the first driving shaft, and a second drum of which one end is coupled to the second driving shaft to be driven by directly receiving driving force of the second driving shaft.