Autonomous coverage vacuum cleaner having edge cleaning head easy to install and uninstall

Abstract

An autonomous coverage vacuum cleaner includes a transmission element driven to rotate and disposed at the bottom of a body, and an edge cleaning head. The transmission element has a lower surface, a positioning recess denting upward from the lower surface and having a non-circular inner profile, and a fixing hole disposed in the positioning recess. The edge cleaning head includes a body, at least a brush extending from the body, a positioning block disposed on the body, and resilient elements extending upward from the positioning block. An outer profile of the positioning block corresponds in shape to the inner profile of the positioning recess. Under an applied force, the resilient elements deform resiliently, get closer to each other, and engage with the fixing holes. The positioning block engages with the positioning recess of the transmission element, such that the transmission elements drive the edge cleaning head to rotate.

1 . An autonomous coverage vacuum cleaner having an edge cleaning head easy to install and uninstall, comprising:
 a body;   a transmission element driven to rotate and disposed at a bottom of the body, the transmission element having a lower surface, a positioning recess denting upward from the lower surface, and a fixing hole disposed in the positioning recess, wherein an inner profile of the positioning recess is non-circular; and   an edge cleaning head comprising a body, at least a brush extending from the body, a positioning block disposed on top of the body, and a plurality of resilient elements extending upward from the positioning block, wherein an outer profile of the positioning block corresponds in shape to the inner profile of the positioning recess of the transmission element, wherein, under an applied force, the resilient elements deform resiliently, get closer to each other, and engage with fixing holes of the transmission element, respectively, wherein the positioning block engages with the positioning recess of the transmission element, such that the transmission element drives the edge cleaning head to rotate.   
     
     
         2 . The autonomous coverage vacuum cleaner of  claim 1 , wherein the outer profile of the positioning block of the edge cleaning head and the inner profile of the positioning recess of the transmission element are rectangular. 
     
     
         3 . The autonomous coverage vacuum cleaner of  claim 1 , wherein each of the resilient elements of the edge cleaning head has a body portion extending upward from the positioning block and a hook portion disposed at an upper end of the body portion, wherein a position-limiting portion is disposed in the fixing hole of the transmission element, such that the hook portion of each of the resilient elements is confined to above the position-limiting portion of the transmission element when the resilient elements of the edge cleaning head engage with the fixing holes of the transmission element, respectively. 
     
     
         4 . The autonomous coverage vacuum cleaner of  claim 3 , wherein the hook portion of each of the resilient elements of the edge cleaning head has a curved surface, such that the curved surface abuts against the position-limiting portion of the transmission element while the resilient element of the edge cleaning head is entering and exiting the fixing hole of the transmission element. 
     
     
         5 . The autonomous coverage vacuum cleaner of  claim 3 , wherein the position-limiting portion of the transmission element has a curved surface, such that the resilient element of the edge cleaning head abuts against the curved surface of the position-limiting portion while entering and exit the fixing hole of the transmission element. 
     
     
         6 . The autonomous coverage vacuum cleaner of  claim 5 , wherein the hook portion of each of the resilient elements of the edge cleaning head has a curved surface, such that the curved surface of the hook portion of each of the resilient elements of the edge cleaning head abuts against the curved surface of the position-limiting portion of the transmission element while the resilient element of the edge cleaning head is entering and exiting the fixing hole of the transmission element. 
     
     
         7 . The autonomous coverage vacuum cleaner of  claim 6 , wherein a body of the edge cleaning head has an upper surface, such that the positioning block extends upward from the upper surface, wherein the upper surface of the body of the edge cleaning head abuts against the lower surface of the transmission element when the positioning block is engaged with the positioning recess of the transmission element. 
     
     
         8 . The autonomous coverage vacuum cleaner of  claim 7 , wherein the body of the edge cleaning head has a central portion, wherein a plurality of pins extends downward, outward, and obliquely from the central portion, the pins each having one said brush, an upper section extending outward from the central portion, and a lower section extending outward from the upper section, wherein a gradient of the upper section is larger than a gradient of the lower section. 
     
     
         9 . The autonomous coverage vacuum cleaner of  claim 6 , wherein the body of the edge cleaning head has a central portion, wherein a plurality of pins extends downward, outward, and obliquely from the central portion, the pins each having one said brush, an upper section extending outward from the central portion, and a lower section extending outward from the upper section, wherein a gradient of the upper section is larger than a gradient of the lower section. 
     
     
         10 . The autonomous coverage vacuum cleaner of  claim 1 , wherein the body of the edge cleaning head has an upper surface, wherein the positioning block extends upward from the upper surface, wherein the upper surface of the body of the edge cleaning head abuts against the lower surface of the transmission element when the positioning block is engaged with the positioning recess of the transmission element. 
     
     
         11 . The autonomous coverage vacuum cleaner of  claim 1 , wherein the body of the edge cleaning head has a central portion, wherein a plurality of pins extends downward, outward, and obliquely from the central portion, the pins each having one said brush, an upper section extending outward from the central portion, and a lower section extending outward from the upper section, wherein a gradient of the upper section is larger than a gradient of the lower section.