Patent ID: 11971178
Assignee: LG ELECTRONICS INC.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 13:
14. The indoor unit of claim 13,
wherein the middle rail comprises:
a first rail extending in a left-right direction;
a second rail extending in the left-right direction and having a shorter length than the first rail; and
a bearing housing disposed between the first rail and the second rail, assembled respectively to the first rail and the second rail to be able to move relative to the first rail and the second rail, and to reduce friction, which is caused when the bearing housing moves relative to the first rail and the second rail, based on rolling friction,
wherein the first rail is fixed to the middle of the door assembly, the second rail is fixed onto the fixed plate, and the rack protrudes from a side of the first rail.