Autonomous cleaning device

Abstract

An autonomous cleaning device that may reduce noise caused by friction with a floor includes: a main body having an opening; a brush unit that is rotatably disposed in the opening of the main body; and a blade assembly that guides introduction of dust swept up by the brush unit, the blade assembly including: a blade that guides dust toward an inner side of the main body; a support member that is coupled to the blade so as to support the blade and that has one side in which a coupling groove is formed; and an insertion member that is inserted into the coupling groove of the support member. The autonomous cleaning device can prevent noise from occurring due to abnormal contact between the blade and the floor while the autonomous cleaning device travels.

What is claimed is: 
     
         1 . An autonomous cleaning device comprising:
 a main body having an opening;   a brush unit rotatably disposed in the opening of the main body; and   a blade assembly to guide introduction of dust swept up by the brush unit,   wherein the blade assembly comprises:
 a blade to guide dust toward an inner side of the main body; 
 a support member coupled to the blade so as to support the blade and having one side in which a coupling groove is formed; and 
 an insertion member inserted into the coupling groove of the support member. 
   
     
     
         2 . The autonomous cleaning device according to  claim 1 , wherein a coupling jaw is disposed at one side of the insertion member and is coupled to the coupling groove. 
     
     
         3 . The autonomous cleaning device according to  claim 2 , wherein the support member comprises at least one deviation prevention jaw to prevent deviation of the insertion member. 
     
     
         4 . The autonomous cleaning device according to  claim 3 , wherein the at least one deviation prevention jaw is disposed at both sides of the coupling groove so as to face each other based on the coupling groove. 
     
     
         5 . The autonomous cleaning device according to  claim 1 , wherein the insertion member comprises a plate coupled to the support member and a contact part coupled to the plate. 
     
     
         6 . The autonomous cleaning device according to  claim 5 , wherein the contact part is formed of a flexible material. 
     
     
         7 . The autonomous cleaning device according to  claim 1 , wherein the blade assembly further comprises a fixing member disposed adjacent to the blade so that at least a portion of the blade contacts a floor. 
     
     
         8 . The autonomous cleaning device according to  claim 1 , wherein the blade assembly further comprises at least one elastic member coupled to an end of the blade so that the blade is movable in a forward/backward direction of a direction in which the autonomous cleaning device travels. 
     
     
         9 . The autonomous cleaning device according to  claim 8 , wherein one side of the at least one elastic member is coupled to an end of the blade and the other side of the at least one elastic member is coupled to the fixing member. 
     
     
         10 . The autonomous cleaning device according to  claim 1 , wherein the blade is formed of an elastic material so that the blade is movable in a forward/backward direction of a direction in which the autonomous cleaning device travels. 
     
     
         11 . The autonomous cleaning device according to  claim 10 , wherein the blade comprises at least one movement part that moves in a forward/backward direction of a direction in which the autonomous cleaning device travels. 
     
     
         12 . The autonomous cleaning device according to  claim 7 , wherein the fixing member and the support member are integrally injection molded. 
     
     
         13 . The autonomous cleaning device according to  claim 12 , wherein the fixing member and the support member are integrally injection molded and the blade is injection molded between the fixing member and the support member. 
     
     
         14 . The autonomous cleaning device according to  claim 1 , wherein the blade comprises a first part fixed to the main body and a second part that extends from the first part to the floor and the support member comprises a first support part that contacts the first part of the blade and a second support part disposed adjacent to the second part of the blade. 
     
     
         15 . The autonomous cleaning device according to  claim 14 , wherein the fixing member comprises a first fixing part that contacts the first part of the blade and a second fixing part disposed adjacent to the second part of the blade. 
     
     
         16 . An autonomous cleaning device comprising:
 a main body having an opening;   a brush unit rotatably disposed in the opening of the main body; and   a blade assembly to guide introduction of dust swept up by the brush unit,   wherein the blade assembly comprises:
 a blade to guide dust toward an inner side of the main body; 
 a support member coupled to the blade so as to support the blade; and 
 an insertion member coupled to one side of the support member so as to prevent noise caused by friction between the support member and a floor. 
   
     
     
         17 . The autonomous cleaning device according to  claim 16 , wherein the insertion member is disposed at rear of the support member so as to be positioned in a space between the support member and the floor. 
     
     
         18 . The autonomous cleaning device according to  claim 16 , wherein the insertion member comprises a plate coupled to the support member and a contact part coupled to the plate and formed of a flexible material and the insertion member is inserted into and coupled to one side of the support member. 
     
     
         19 . The autonomous cleaning device according to  claim 18 , wherein a coupling groove is disposed in one side of the support member so that the insertion member is inserted into the support member through the coupling groove and a coupling jaw is disposed at one side of the insertion member so that the insertion member is coupled to the support member through the coupling jaw. 
     
     
         20 . The autonomous cleaning device according to  claim 19 , wherein a deviation prevention jaw is disposed at both sides of the coupling groove so as to prevention deviation of the insertion member. 
     
     
         21 . An autonomous cleaning device comprising:
 a main body having an opening;   a brush unit rotatably disposed in the opening of the main body; and   a blade assembly to guide introduction of dust swept up by the brush unit,   wherein the blade assembly comprises:
 a blade to guide dust toward an inner side of the main body and comprising at least one wrinkle part so as to be movable in a forward/backward direction of a direction in which the autonomous cleaning device travels; and 
 a support member coupled to the blade so as to support the blade. 
   
     
     
         22 . The autonomous cleaning device according to  claim 21 , wherein the at least one wrinkle part comprises at least one of a mount-shaped part that protrudes from an upper side of the blade and a valley-shaped part that protrudes from a lower side of the blade. 
     
     
         23 . The autonomous cleaning device according to  claim 21 , further comprising an insertion member having a coupling jaw through which the insertion member is inserted into a coupling groove, wherein the support member comprises the coupling groove. 
     
     
         24 . The autonomous cleaning device according to  claim 23 , wherein the support member comprises at least one deviation prevention jaw disposed facing each other based on the coupling groove so as to prevent deviation of the insertion member. 
     
     
         25 . The autonomous cleaning device according to  claim 23 , wherein the insertion member comprises a plate coupled to the support member and a contact part coupled to the plate and the contact part is formed of a flexible material. 
     
     
         26 . The autonomous cleaning device according to  claim 21 , wherein the blade is formed of an elastic material so as to be movable in a forward/backward direction of a direction in which the autonomous cleaning device travels. 
     
     
         27 . The autonomous cleaning device according to  claim 26 , wherein the blade is formed of hydrogenated nitrile butadiene rubber (HNBR). 
     
     
         28 . The autonomous cleaning device according to  claim 21 , wherein the blade assembly further comprises a fixing member disposed adjacent to the blade so that at least a portion of the blade closely contacts a floor. 
     
     
         29 . A blade assembly for an autonomous cleaning device, the blade assembly comprising:
 a blade to guide dust toward an inner side of a main body of the autonomous cleaning device;   a support member coupled to the blade so as to support the blade; and   an insertion member coupled to one side of the support member so as to prevent noise caused by friction between the support member and a floor.   
     
     
         30 . The blade assembly of  claim 28 , further comprising at least one wrinkle part so as to be movable in a forward/backward direction of a direction in which the autonomous cleaning device travels. 
     
     
         31 . The blade assembly of  claim 30 , wherein the at least one wrinkle part comprises at least one of a mount-shaped part that protrudes from an upper side of the blade and a valley-shaped part that protrudes from a lower side of the blade. 
     
     
         32 . The autonomous cleaning device according to  claim 29 , wherein the blade assembly further comprises at least one elastic member coupled to an end of the blade so that the blade is movable in a forward/backward direction of a direction in which the autonomous cleaning device travels. 
     
     
         33 . The autonomous cleaning device according to  claim 29 , wherein the blade is formed of an elastic material so that the blade is movable in a forward/backward direction of a direction in which the autonomous cleaning device travels. 
     
     
         34 . The autonomous cleaning device according to  claim 33 , wherein the blade comprises at least one movement part that moves in a forward/backward direction of a direction in which the autonomous cleaning device travels. 
     
     
         35 . The autonomous cleaning device according to  claim 29 , wherein the insertion member comprises a plate coupled to the support member and a contact part coupled to the plate and the contact part is formed of a flexible material.