US 12,305,627 B2
Crankshaft, compressor, and refrigeration device
Chengcheng Wang, Anhui (CN); Gang Huang, Anhui (CN); and Dongdong Song, Anhui (CN)
Assigned to ANHUI MEIZHI COMPRESSOR CO., LTD., Anhui (CN)
Filed by ANHUI MEIZHI COMPRESSOR CO., LTD., Anhui (CN)
Filed on Feb. 18, 2022, as Appl. No. 17/675,378.
Application 17/675,378 is a continuation of application No. PCT/CN2020/121599, filed on Oct. 16, 2020.
Claims priority of application No. 201911158468.2 (CN), filed on Nov. 22, 2019.
Prior Publication US 2022/0170449 A1, Jun. 2, 2022
Int. Cl. F16C 3/14 (2006.01); F04B 35/04 (2006.01); F04B 39/00 (2006.01); F04B 53/00 (2006.01); F04B 53/18 (2006.01)
CPC F04B 39/0094 (2013.01) [F04B 35/04 (2013.01); F04B 53/006 (2013.01); F04B 53/18 (2013.01); F16C 3/14 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A crankshaft comprising:
a first shaft that forms a first oil passage along an axis of the first shaft;
a second shaft that forms a second oil passage along an axis of the second shaft;
a first crank arm disposed between the first shaft and the second shaft that forms a third oil passage in communication with the first oil passage and the second oil passage,
wherein:
the first shaft comprises a thin-walled portion and a thick-walled portion;
the axis of the second shaft is offset from the axis of the first shaft; and
the first shaft is oriented relative to the second shaft such that a direction of the offset goes through the thick-walled portion; and
a second crank arm disposed between the second shaft and the first crank arm that forms a fourth oil passage in communication with the second oil passage and the third oil passage.