US 12,376,719 B2
Vacuum cleaner
Jong Myung Lee, Seoul (KR); Chi Wan Kim, Seoul (KR); Jin Rae Cho, Seoul (KR); and Jung Woo Lee, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Appl. No. 17/777,462
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Dec. 1, 2020, PCT No. PCT/KR2020/017380
§ 371(c)(1), (2) Date May 17, 2022,
PCT Pub. No. WO2021/112528, PCT Pub. Date Jun. 10, 2021.
Claims priority of application No. 10-2019-0159187 (KR), filed on Dec. 3, 2019.
Prior Publication US 2023/0355054 A1, Nov. 9, 2023
Int. Cl. A47L 9/04 (2006.01); A46B 9/02 (2006.01); A46B 13/00 (2006.01); A46B 13/02 (2006.01); A47L 5/30 (2006.01)
CPC A47L 9/0477 (2013.01) [A46B 9/026 (2013.01); A46B 13/006 (2013.01); A46B 13/02 (2013.01); A47L 5/30 (2013.01); A47L 9/0411 (2013.01); A46B 2200/3033 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A vacuum cleaner comprising:
a suction nozzle configured to suction dust on a floor; and
a main body configured to receive the dust,
wherein the suction nozzle comprises:
a housing that defines an inlet configured to provide the dust to the main body, a rotating brush rotatably disposed in the housing and configured to rotate about a rotation axis to thereby cause the dust on the floor to move toward the inlet, and
a driver disposed at the housing and configured to rotate the rotating brush,
wherein the rotating brush comprises:
a first rotating brush configured to receive rotational force from the driver,
a second rotating brush coupled to the first rotating brush, and
a coupler that couples the first rotating brush and the second rotating brush such that the first rotating brush and the second rotating brush are arranged along the rotation axis, the coupler being configured to receive the rotational force from the first rotating brush and transmit the rotational force received from the first rotating brush to the second rotating brush, wherein the first rotating brush and the second rotating brush accommodate the coupler and surround an outer circumferential surface of the coupler,
wherein the coupler has (i) a first end disposed inside the first rotating brush and (ii) a second end disposed inside the second rotating brush and spaced apart from the first end in a direction of the rotation axis, and
wherein a length of the coupler between the first and second ends of the coupler in the direction of the rotation axis is less than a combined length of the first rotating brush and the second rotating brush in the direction of the rotation axis.