US 12,326,181 B2
Internal-meshing planetary gear device
Wenjie Lin, Foshan (CN); Gang Wang, Foshan (CN); Kiyoji Minegishi, Forshan (CN); Ziming Guo, Foshan (CN); and Tsuyoshi Isaji, Foshan (CN)
Assigned to MIDEA GROUP CO., LTD., Foshan (CN); GUANGDONG MIDEA ELECTRIC CO, . LTD., Foshan (CN); GD MIDEA AIR-CONDITIONING EQUIPMENT CO, . LTD., Foshan (CN); and GUANGDONG JIYA PRECISION MACHINERY TECHNOLOGY CO, LTD., Foshan (CN)
Filed by Midea Group Co., Ltd., Foshan (CN); Guangdong Jiya Precision Machinery Technology Co., Ltd., Foshan (CN); GD Midea Air-Conditioning Equipment Co,. Ltd., Foshan (CN); and Guangdong Midea Electric Co., Ltd., Foshan (CN)
Filed on May 11, 2023, as Appl. No. 18/196,407.
Application 18/196,407 is a continuation of application No. PCT/CN2021/077117, filed on Feb. 20, 2021.
Claims priority of application No. 2020-210657 (JP), filed on Dec. 18, 2020.
Prior Publication US 2023/0279926 A1, Sep. 7, 2023
Int. Cl. F16H 13/08 (2006.01); B60B 27/00 (2006.01); B60K 17/04 (2006.01); F16H 57/04 (2010.01); F16H 57/08 (2006.01)
CPC F16H 13/08 (2013.01) [B60B 27/0047 (2013.01); B60K 17/046 (2013.01); F16H 57/0486 (2013.01); F16H 2057/085 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An internal-meshing planetary gear device, comprising:
a bearing member having an outer ring, an inner ring arranged on an inner side of the outer ring and supported to be rotatable relative to the outer ring with a rotation axis as a center, and a plurality of rolling bodies arranged between the outer ring and the inner ring;
an internally toothed gear, having internal teeth and fixed to the outer ring;
a planetary gear, having external teeth partially meshing with the internal teeth; and
a plurality of inner pins configured to revolve in a plurality of inner pin holes formed in the planetary gear and rotate relative to the internally toothed gear, wherein the plurality of inner pins is inserted into the plurality of inner pin holes respectively,
wherein the inner ring comprises a first inner ring and a second inner ring which are opposite to each other in a direction parallel to the rotation axis and have opposite surfaces in contact with each other respectively,
the first inner ring having a plurality of holding holes through which respective inner pins of the plurality of inner pins passes along the direction parallel to the rotation axis, and
each of the plurality of inner pins is held in the inner ring in a self-rotatable state.