Sweeping Mechanism and Sweeping Robot

Abstract

A sweeping mechanism comprises an air duct suction opening ( 12 ) formed in the bottom ( 11 ) of a shell ( 1 ) and at least two sweeping brushes ( 15 ) which are independently arranged on the bottom ( 11 ) of the shell ( 1 ) and are separated from the air duct suction opening ( 12 ), and each of the at least two sweeping brushes ( 15 ) is driven to move back and forth integrally close to and far away from the air duct suction opening ( 12 ). The invention further provides a sweeping robot. The sweeping mechanism and the sweeping robot can effectively solve the problems of dust suction blockage and the like caused by winding due to the fact that the rolling main brush ( 108 ) is arranged in the air suction opening ( 107 ), and the dust suction efficiency and effect are effectively improved.

What is claimed is: 
     
         1 . A sweeping mechanism, comprising an air duct suction opening formed in a bottom of a shell and at least two sweeping brushes which are independently arranged at the bottom of the shell and are separated from the air duct suction opening, and each of the at least two sweeping brushes is driven to move back and forth integrally close to and away from the air duct suction opening. 
     
     
         2 . The sweeping mechanism according to  claim 1 , wherein each of the at least two sweeping brushes is driven to move back and forth integrally between the air duct suction opening and en edge of the bottom of the shell. 
     
     
         3 . The sweeping mechanism according to  claim 1 , wherein each of the at least two sweeping brushes moves back and forth in a direction of an axis thereof; or, each of the at least two sweeping brushes moves back and forth in a direction perpendicular to an axis thereof. 
     
     
         4 . The sweeping mechanism according to  claim 1 , wherein each of the at least two sweeping brushes swings back and forth around the axis thereof, and a swing range of each of the at least two sweeping brushes swinging back and forth around the axis thereof is 120 degrees; or, each of the at least two sweeping brushes rotates 360° about the axis thereof. 
     
     
         5 . The sweeping mechanism according to  claim 1 , wherein each of the at least two sweeping brushes comprises a fixed seat arranged at the bottom of the shell, a movable support arranged on the fixed seat and bristles arranged on the movable support, and the movable support is driven by a driving component to move back and forth relative to the fixed seat. 
     
     
         6 . The sweeping mechanism according to  claim 5 , wherein the movable support is driven by the driving component to move back and forth relative to the fixed seat as follows:
 moving back and forth in a direction of an axis thereof; or moving back and forth in a direction perpendicular to an axis thereof.   
     
     
         7 . The sweeping mechanism according to  claim 6 , wherein the movable support is further driven by a driving component to move relative to the fixed seat as follows:
 swinging back and forth around an axis thereof, and a swinging range is 120°; or rotating 360° around an axis thereof.   
     
     
         8 . The sweeping mechanism according to  claim 5 , wherein the fixed seat comprises a limiting body, a containing groove is formed in the limiting body, the movable support comprises a movable body for containing bristles, a driven member is arranged at a bottom of the movable body, and the driven member extends out of the containing groove and drives the movable body to move back and forth in the containing groove under an action of the driving component. 
     
     
         9 . The sweeping mechanism according to  claim 8 , wherein the movable body reciprocates in a length direction in the containing groove; a length of the movable body is smaller than that of the containing groove; the movable body comprises an upper portion for arranging bristles and a lower portion connected with the upper portion, and the driven member is arranged on the bottom surface of the lower portion; a longitudinal section of the movable body in a width direction of the movable body is in a convex shape; a width of the upper portion is smaller than that of the containing groove so that the upper portion can be contained in the containing groove, and a width of the lower portion is larger than that of the containing groove. 
     
     
         10 . The sweeping mechanism according to  claim 8 , wherein the movable body reciprocates in a width direction in the containing groove; a width of the movable body is smaller than that of the containing groove; the movable body comprises an upper portion for arranging bristles and a lower portion connected with the upper portion, and the driven member is arranged on a bottom surface of the lower portion; a longitudinal section of the movable body in a length direction of the movable body is in a convex shape; a length of the upper portion is smaller than that of the containing groove so that the upper portion can be contained in the containing groove, and a length of the lower portion is larger than that of the containing groove. 
     
     
         11 . The sweeping mechanism according to  claim 1 , wherein the at least two sweeping brushes which are independently arranged at the bottom of the shell and are separated from the air duct suction opening comprise two sweeping brushes, and the two sweeping brushes are arranged on two sides of the air duct suction opening respectively or arranged between a front end of the bottom of the shell and the air duct suction opening; and the two sweeping brushes integrally form a straight line shape, a splayed shape or an inverted splayed shape. 
     
     
         12 . The sweeping mechanism according to  claim 1 , wherein the at least two sweeping brushes which are independently arranged at the bottom of the shell and are separated from the air duct suction opening comprise pluralities of sweeping brushes, and the pluralities of sweeping brushes are arranged between a front end of the bottom of the shell and the air duct suction opening. 
     
     
         13 . The sweeping mechanism according to  claim 1 , further comprising at least two grooves formed in a surface of the bottom of the shell, each of the at least two grooves communicating with the air duct suction opening to form a dust guide air duct for guiding dust into the air duct suction opening; one end of each of the at least two grooves is connected with the air duct suction opening, and an other end of each of the at least two grooves is in smooth transition connection with an edge of the bottom of the shell; and the at least two sweeping brushes are disposed to mate with the at least two grooves to facilitate guiding raised dust into the air duct suction opening through the at least two grooves. 
     
     
         14 . The sweeping mechanism according to  claim 13 , wherein the at least two grooves formed in the surface of the bottom of the shell comprise a first groove and a second groove which are formed in two sides of the air duct suction opening respectively, and the at least two sweeping brushes arranged at the bottom of the shell comprises a first sweeping brush and a second sweeping brush which are arranged in front of the first groove and the second groove respectively; and the first sweeping brush is disposed parallel to the first groove and the second sweeping brush is disposed parallel to the second groove. 
     
     
         15 . The sweeping mechanism according to  claim 14 , wherein the first groove and the second groove each comprises pluralities of sub-grooves arranged in parallel, the first sweeping brush and the second sweeping brush each comprises pluralities of sweeping sub-brushes arranged in parallel, and the pluralities of sub-grooves and the pluralities of sweeping sub-brushes are arranged alternately. 
     
     
         16 . The sweeping mechanism according to  claim 13 , wherein the air duct suction opening is formed in a central axis of the bottom of the shell, and a distance between the air duct suction opening and a front end of the bottom of the shell is smaller than a distance between the air duct suction opening and a rear end of the bottom of the shell; a depth of each of the at least one groove is gradually increased from one end away from the air duct suction opening to the other end connected with the air duct suction opening. 
     
     
         17 . The sweeping mechanism according to  claim 13 , wherein an inclined guide surface is arranged at a front end of the bottom of the shell, an included angle theta between the inclined guide surface and a horizontal plane is more than 0 degree and less than 45 degrees, and a front or rear edge of the air duct suction opening abuts a rear end of the inclined guide surface;
 the inclined guide surface comprises a first inclined guide surface and a second inclined guide surface which are connected in a front-to-back transition manner, and an included angle between the first inclined guide surface and a horizontal plane is larger than an included angle between the second inclined guide surface and the horizontal plane; or, the inclined guide surface is a curved surface, and the angle theta between the inclined guide surface and the horizontal plane gradually decreases from the front end to the rear end of the inclined guide surface.   
     
     
         18 . The sweeping mechanism according to  claim 17 , wherein the at least two grooves formed in the surface of the bottom of the shell comprise a first groove, a second groove and a third groove, the first groove and the second groove are formed in two sides of the air duct suction opening respectively, and front edges or rear edges of the first groove and the second groove abut the rear end of the inclined guide surface; a front end of the third groove is in smooth transition connection with the front end of the bottom of the shell, and a rear end of the third groove is connected with the air duct suction opening; the at least one sweeping brush arranged at the bottom of the shell comprises a first sweeping brush and a second sweeping brush, and the first sweeping brush and the second sweeping brush are arranged in front of the first groove and the second groove respectively and arranged on two sides of the third groove. 
     
     
         19 . The sweeping mechanism according to  claim 1 , further comprising a dust collection box and a draught fan which are arranged inside the shell, and the air duct suction opening, the dust collection box and the draught fan are sequentially communicated; the draught fan comprises a first draught fan and a second draught fan, and the first draught fan and the second draught fan communicate with the dust collection box through an air suction guide component; the air suction guide component comprises a first air suction channel and a second air suction channel which are independent of each other, the first draught fan is communicated with the first air suction channel, and the second draught fan is communicated with the second air suction channel. 
     
     
         20 . A sweeping robot, comprising the sweeping mechanism according to  claim 1 .