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公开(公告)号：US11904973B2
公开(公告)日：2024-02-20
申请号：US16979254
申请日：2019-03-05
IPC分类号： B62M6/50 , B62J45/412 , B62J45/421 , H02K11/215 , B62M6/55 , H02K7/08 , H02K7/116 , H02K21/14 , B62J45/411 , B62J43/13
CPC分类号： B62J45/421 , B62J45/411 , B62J45/412 , B62M6/50 , B62M6/55 , H02K7/083 , H02K7/116 , H02K11/215 , H02K21/14 , B62J43/13
摘要： A rotary shaft includes a projection protruding from a rotor along an axial direction of the rotary shaft. The projection has an outer peripheral surface provided with teeth engaged with a gear. The rotor has a first portion which is located around the rotary shaft and which is fixed to the rotary shaft. The rotor has a second portion which is located at an end of the rotor, the end facing the projection. The second portion has an inner diameter larger than an inner diameter of the first portion.
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公开(公告)号：US12049284B2
公开(公告)日：2024-07-30
申请号：US17259188
申请日：2019-02-26
CPC分类号： B62M6/55 , H02K7/083 , H02K7/116 , H02K11/33 , H05K7/2039
摘要： A motor unit for use in electric bicycles, the motor unit comprising: a motor having a rotary shaft; a unit case to house the rotary shaft partially; an input shaft arranged in the unit case to penetrate through the unit case and to be rotatable around an axis; an input body configured to rotate along with the input shaft; an output body configured to rotate around the axis upon receiving rotational force of the input body; and a control board housed in the unit case and configured to control rotation of the motor. The unit case includes: a first heat dissipating portion connected to a first surface of the control board; and a second heat dissipating portion connected to a second surface opposite from the first surface of the control board.
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