Dust cup assembly and handheld cleaner having same

A handheld cleaner, comprising:

• a dust cup assembly, and
• a handle assembly disposed on the dust cup assembly and used for handholding,
• wherein the dust cup assembly comprises:
• a casing including a cup body with an open top, and a cleaner cover disposed at a top of the cup body and capable of being opened and closed;
• a negative pressure device provided in the cup body and used to suck airflow from an environment into the casing;
• and
• a dedusting device provided in the cup body, located above the negative pressure device and withdrawable from the top of the cup body when the cleaner cover is opened;
• wherein a central chamber, a dedusting chamber and a dust collecting chamber are provided in the cup body, the central chamber is configured to have an upright columnar shape and comprises an air exhaust chamber and a mounting chamber in communication with each other in an up-and-down direction, the dedusting chamber is configured to have a closed annular cross section and surrounds the air exhaust chamber by one circle, the dust collecting chamber is located below the dedusting chamber, has a non-closed annular cross section and surrounds the mounting chamber by less than one circle, the dedusting device is provided in the dedusting chamber, and the negative pressure device is provided in the mounting chamber and is in communication with the air exhaust chamber;
• wherein the cup body comprises a dust cup defining the dust collecting chamber and a cabinet disposed on the dust cup and defining the central chamber and the dedusting chamber, the dust cup comprises a base and a cup casing, the cup casing is configured to have a non-closed annular cross section with an opening so as to define the dust collecting chamber having the non-closed annular cross section in the cup casing, the cup casing is disposed at a top of the base, a mounting space located outside the dust collecting chamber is defined between an inner-ring wall face of the cup casing and a top wall of the base, a top of the mounting space is directly opened, and a side of the mounting space is opened by the opening;
• wherein the cabinet comprises an upper body and a lower body disposed at a bottom of the upper body, the dedusting chamber and the air exhaust chamber are both formed in the upper body, the mounting chamber is formed in the lower body, the lower body is mounted at the mounting space via an opened portion of the mounting space, and the upper body is supported on the top of the cup casing;
• wherein the upper body comprises a tube casing and an air exhaust pipe, the air exhaust pipe is provided in the tube casing and the dedusting chamber is defined between the air exhaust pipe and the tube casing, a bottom of the air exhaust pipe penetrates through a bottom wall of the tube casing and the air exhaust chamber in communication with the mounting chamber is defined in the air exhaust pipe.