US 11,965,500 B2
Linear compressor
Sangik Son, Seoul (KR); Youngpil Kim, Seoul (KR); Kyungmin Lee, Seoul (KR); and Wooju Jeon, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Filed by LG Electronics Inc., Seoul (KR)
Filed on Oct. 23, 2020, as Appl. No. 17/078,468.
Claims priority of application No. 10-2019-0133152 (KR), filed on Oct. 24, 2019.
Prior Publication US 2021/0123424 A1, Apr. 29, 2021
Int. Cl. F04B 35/04 (2006.01); F04B 39/00 (2006.01); F04B 39/12 (2006.01); F04B 53/14 (2006.01)
CPC F04B 35/045 (2013.01) [F04B 39/0005 (2013.01); F04B 39/12 (2013.01); F04B 53/146 (2013.01); F04B 39/0016 (2013.01); F04B 39/0061 (2013.01); F05B 2210/14 (2013.01); F25B 2400/073 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A compressor comprising:
a cylinder defining a compression space;
a piston structure accommodated in the cylinder and including a mount member and a guide member, the guide member being configured to reciprocate inside the compression space of the cylinder in an axial direction to compress a refrigerant gas therein; and
a magnet frame configured to support a mover, the mover being coupled to the piston structure and configured to move together with the piston structure,
wherein the mount member connects the guide member to the magnet frame,
wherein the guide member is configured to be rotated with respect to the mount member,
wherein the piston structure includes a rotatable coupling member coupled to an inner circumferential surface of the guide member, and
wherein the rotatable coupling member includes:
a shaft member inserted into the rotatable coupling member, and
a cutoff portion in the axial direction, the cutoff portion configured to be press-fitted to fix the rotatable coupling member to the inner circumferential surface of the guide member.