Self-cleaning dust cylinder assembly and hand-held vacuum cleaner with the same

Abstract

A self-cleaning dust cylinder assembly, including a dust collection assembly, a filter and a cleaning assembly. The dust collection assembly includes a dust collection cylinder, the upper end of the dust collection cylinder is provided with an opening, and the lower end of the dust collection cylinder is provided with a dust suction port. The filter inlet side of the filter is located above the dust suction port, and the filter outlet side is connected to the opening of the dust collection cylinder. The cleaning assembly includes a cleaning brush, and the cleaning brush is installed in the dust collection cylinder and cleans the filter with the movement of the dust collection cylinder, so as to clean the dust stains and other garbage attached on the filter into the dust collection cylinder.

What is claimed is: 
     
         1 . A self-cleaning dust cylinder assembly, comprising a dust collection assembly, a filter and a cleaning assembly;
 the dust collection assembly comprises a dust collection cylinder, an upper end of the dust collection cylinder is provided with an opening, and a lower end of the dust collection cylinder is provided with a dust suction port;   a filter inlet side of the filter is located above the dust suction port and the filter outlet side is connected to the opening of the dust collection cylinder;   the cleaning assembly comprises a cleaning brush, wherein the cleaning brush is installed in the dust collection cylinder and cleans the filter with a movement of the dust collection cylinder.   
     
     
         2 . The self-cleaning dust cylinder assembly according to  claim 1 , wherein the filter comprises a filter screen assembly and a HEPA filter assembly, the filter screen assembly is connected to the opening of the dust collection cylinder; the HEPA filter assembly is fixed in the filter screen assembly. 
     
     
         3 . The self-cleaning dust cylinder assembly according to  claim 2 , wherein the cleaning assembly further comprises a first mounting ring, the first mounting ring is detachably arranged on an inner wall of the opening of the dust collection cylinder, the cleaning brush is arranged circumferentially along an inner wall of the first mounting ring, and the filter screen assembly is connected to a top of the first mounting ring. 
     
     
         4 . The self-cleaning dust cylinder assembly according to  claim 3 , wherein an outer wall of the first mounting ring is respectively provided with a positioning strip and a plurality of first snapping blocks, an inner wall of the dust collection cylinder is respectively provided with a positioning notch corresponding to the positioning strip and a first snapping opening corresponding to and the first snapping block; the positioning strip is matched with the positioning notch, and the first snapping block is snapped with the first snapping opening. 
     
     
         5 . The self-cleaning dust cylinder assembly according to  claim 1 , wherein the dust collection assembly further comprises a cylinder door and a switch, the dust collection cylinder is provided with a dust discharge port above the dust suction port, the cylinder door is hinged on the dust collection cylinder for sealing the dust discharge port, and the switch provided on the dust collection cylinder is configured to lock the cylinder door. 
     
     
         6 . The self-cleaning dust cylinder assembly according to  claim 5 , wherein a lower end of the cylinder door is hinged on the dust collection cylinder through a rotating shaft, an upper end of the cylinder door is provided with a first hooking portion, the dust collection cylinder is provided with an installation opening above the dust discharge port, the switch is arranged in the installation opening, a spring is arranged between the switch and a top of the installation opening, a lower end of the switch is provided with a second hooking portion, and the second hooking portion is hooked with the first hooking portion under an action of the spring to lock the cylinder door. 
     
     
         7 . The self-cleaning dust cylinder assembly according to  claim 1 , wherein the dust collection assembly further comprises a baffle plate, the dust suction port extends into an interior of the dust collection cylinder to form an extending portion, and an insertion gap is formed between the extending portion and the inner side wall of the dust collection cylinder; the baffle plate is L shaped, one side of the baffle plate is inserted in the insertion gap, the other side is above the dust suction port, and a gap is formed between the baffle plate and the dust suction port. 
     
     
         8 . A hand-held vacuum cleaner, comprising a vacuum cleaner component, a dust collection assembly according to  claim 1 , a filter and a cleaning assembly; the vacuum cleaner component is detachably connected to the opening of the dust collection cylinder, and an air flow passage is formed between the dust suction port of the dust collection cylinder, the filter and the vacuum cleaner component. 
     
     
         9 . The hand-held vacuum cleaner according to  claim 8 , wherein the vacuum cleaner component and the dust collection cylinder are connected by a rotary snapping structure, the filter screen assembly comprises a second mounting ring and a the primary filter screen, wherein the primary filter screen is arranged on the second mounting ring; and the filter further comprises a press ring; after the vacuum cleaner component is snapped connected with the dust collection cylinder, the second mounting ring is pressed against a top of the first mounting ring through the press ring. 
     
     
         10 . The hand-held vacuum cleaner according to  claim 9 , wherein the vacuum cleaner component comprises a casing, a bracket and a dust collector main body, the bracket is fixed in the casing, the dust collector main body is provided on the bracket, the casing and the bracket are provided with an exhaust port, side walls of the casing and the bracket are provided with a second snapping block and a third snapping block, respectively; an inner wall of the dust collection cylinder is provided with a second snapping opening corresponding to the second snapping block, an inner wall of the second mounting ring is provided with a third snapping opening corresponding to the third snapping block, the second snapping opening and the third snapping opening are L shaped, the second snapping block and the third snapping block are respectively snapped with the second snapping opening and the third snapping opening.