公开(公告)号：US20220299087A1

公开(公告)日：2022-09-22

申请号：US17694671

申请日：2022-03-15

Applicant: NIDEC CORPORATION

Inventor： Hiroshi KOBAYASHI ,  Takeshi OHIRO ,  Takuya OGAWA ,  Ryosuke TAKAHASHI ,  Toshitsugu YAMAMOTO

IPC: F16H1/32 ,  A61G5/04 ,  F16H57/021

Abstract: A motor unit having a motor shaft, and a speed reduction mechanism connected to the motor shaft are included. The speed reduction mechanism includes a sun gear unit disposed on the motor shaft, planetary gear units meshing with the sun gear unit and arranged in the circumferential direction, a carrier at least a part of which surrounds the planetary gear units, and an output unit connected to the planetary gear units. The carrier includes a first cylindrical portion disposed outward of and above the sun gear unit and extending in the axial direction. The first cylindrical portion rotatably supports the output unit via a bearing, and the bearing is at least partly disposed radially inward of the radially outer end of the planetary gear unit.