US RE49,937 E1
Rotary compressor with vane coupled to rolling piston
Gukhyun Cho, Seoul (KR); Yunhi Lee, Seoul (KR); and Byeongchul Lee, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/000,673
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Aug. 19, 2015, PCT No. PCT/KR2015/008655
§ 371(c)(1), (2) Date Feb. 24, 2017,
PCT Pub. No. WO2016/043439, PCT Pub. Date Mar. 24, 2016.
Application 17/000,673 is a reissue of application No. 15/506,300, filed on Aug. 19, 2015, granted, now 10,550,696, issued on Feb. 4, 2020.
Claims priority of application No. 10-2014-0125137 (KR), filed on Sep. 19, 2014.
Int. Cl. F01C 21/08 (2006.01); F03C 2/00 (2006.01); F03C 4/00 (2006.01); F04C 2/00 (2006.01); F04C 15/00 (2006.01); F04C 18/324 (2006.01); F04C 18/356 (2006.01); F04C 23/00 (2006.01); F04C 29/00 (2006.01)
CPC F01C 21/0809 (2013.01) [F04C 18/324 (2013.01); F04C 18/356 (2013.01); F04C 23/008 (2013.01); F04C 29/00 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A compressor, comprising:
a drive motor;
a rotation shaft configured to transfer a rotation force of the drive motor, the rotation shaft having an eccentric portion;
a cylinder provided at one side of the drive motor, and having a vane slot;
a rolling piston coupled to the eccentric portion of the rotation shaft, and having a hinge recess at an outer circumferential surface of the rolling piston; and
a vane having a vane body slidably inserted into the vane slot of the cylinder and a hinge protrusion inserted into the hinge recess of the rolling piston to be rotatable by a predetermined angle, wherein a diameter of the hinge protrusion is greater than an interval between both ends of an opening of the hinge recess, wherein [ the ] hinge protrusion includes:
at least one bearing surface contacting an inner circumferential surface of the hinge recess provided on an outer circumferential surface of the hinge protrusion, wherein the [ at least one ] bearing surface is formed within a range of ±90 degree based on a central line in a lengthwise direction of the vane; and
a plurality of spaced surfaces spaced from the inner circumferential surface of the hinge recess formed on the outer circumferential surface of the hinge protrusion as flat surfaces, and wherein at least two of the plurality of spaced surfaces are respectively formed between ends of the at least one bearing surface and side surfaces of the vane body respectively corresponding to the ends of the at least one bearing surface such that the [ at least two of the plurality of ] spaced surfaces are formed at sides of the vane body based on a virtual line that passes across a rotation center of the hinge protrusion and forms a right angle with respect to the central line in the lengthwise direction of the vane body.