US 12,419,474 B2
Robot vacuum cleaner
Hwang Kim, Seoul (KR); Sanghoon Han, Seoul (KR); Youngjun Jeon, Seoul (KR); Byungho Yoon, Seoul (KR); and Soohyun Kim, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/787,639
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Oct. 14, 2020, PCT No. PCT/KR2020/014022
§ 371(c)(1), (2) Date Jun. 21, 2022,
PCT Pub. No. WO2021/132859, PCT Pub. Date Jul. 1, 2021.
Claims priority of application No. 10-2019-0174121 (KR), filed on Dec. 24, 2019.
Prior Publication US 2022/0408992 A1, Dec. 29, 2022
Int. Cl. A47L 9/28 (2006.01); A47L 9/00 (2006.01); A47L 11/40 (2006.01); B62D 61/12 (2006.01)
CPC A47L 9/009 (2013.01) [A47L 9/2852 (2013.01); A47L 11/4066 (2013.01); A47L 11/4072 (2013.01); B62D 61/12 (2013.01); A47L 2201/00 (2013.01); A47L 2201/04 (2013.01); B60B 2200/49 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A robot cleaner, comprising:
a body defining an exterior;
a main wheel moving the body;
a main motor providing a driving force to the main wheel;
a rotation shaft receiving the driving force from the main motor to rotate the main wheel;
a main frame having one side coupled to the main motor and the other side penetrated by the rotation shaft to support the main wheel;
a subframe rotatably coupled to the main frame;
a sub-wheel coupled to the subframe to rotate; and
a sub-motor configured to rotate the subframe to change a position of the sub-wheel.