US 12,449,186 B2
Refrigerator
Yongwon Dong, Seoul (KR); Younseok Lee, Seoul (KR); and Sanggyun Lee, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 18/267,341
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Dec. 9, 2021, PCT No. PCT/KR2021/018643
§ 371(c)(1), (2) Date Jun. 14, 2023,
PCT Pub. No. WO2022/131677, PCT Pub. Date Jun. 23, 2022.
Claims priority of application No. 10-2020-0175398 (KR), filed on Dec. 15, 2020.
Prior Publication US 2024/0044569 A1, Feb. 8, 2024
Int. Cl. F25D 23/02 (2006.01)
CPC F25D 23/028 (2013.01) [F25D 23/025 (2013.01); F25D 2323/023 (2013.01); F25D 2323/024 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A refrigerator comprising:
a cabinet having a storage space;
a hinge mechanism coupled to the cabinet;
a main door coupled by the hinge mechanism to be rotatable with respect to the cabinet to open and close the storage space; and
a sub door coupled to the hinge mechanism to be rotatable with respect to the main door,
wherein the hinge mechanism comprises a first hinge pin, a second hinge pin, and a first bushing rotatable with respect to the first hinge pin,
wherein the main door together with the sub door is rotatable with respect to the first hinge pin, and the sub door is rotatable with respect to the second hinge pin,
wherein a rotation axis of the main door and a rotation axis of the sub door extend into the sub door, and
wherein a portion of the first bushing is received inside the second hinge pin.