公开(公告)号：US11965437B2

公开(公告)日：2024-04-23

申请号：US17434165

申请日：2020-02-26

申请人： NTN Corporation

发明人： Takushi Matsuto ,  Shintarou Ishikawa ,  Takahide Saito

IPC分类号： F01L1/344 ,  F01L1/02 ,  F01L1/053 ,  F01L1/352 ,  F16H35/00 ,  H02K7/08 ,  H02K7/116 ,  H02K21/16 ,  F01L1/047 ,  F16H1/32

CPC分类号： F01L1/344 ,  F01L1/022 ,  F01L1/053 ,  F01L1/352 ,  F16H35/008 ,  H02K7/083 ,  H02K7/116 ,  H02K21/16 ,  F01L2001/0475 ,  F01L2001/0476 ,  F01L2001/0535 ,  F01L2820/032 ,  F16H1/32

摘要： A differential includes a drive rotating body rotatable about a rotation axis, a planetary rotating body that is rotatable and is revolvable about the rotation axis, and a driven rotating body rotatable about the rotation axis. The planetary rotating body is made to mesh with each of the drive rotating body and the driven rotating body, so that a first speed reducer is constituted between the planetary rotating body and the drive rotating body and so that a second speed reducer is constituted between the planetary rotating body and the driven rotating body. The planetary rotating body is driven by an electric motor, and the drive rotating body is driven by a driving force from an engine. The intake camshaft is provided on the driven rotating body, and the exhaust camshaft is provided on the drive rotating body.

公开(公告)号：US11852049B2

公开(公告)日：2023-12-26

申请号：US17435882

申请日：2020-02-26

申请人： NTN CORPORATION

发明人： Shintarou Ishikawa ,  Takahide Saito

IPC分类号： F01L1/352 ,  F01L1/344 ,  F01L1/047 ,  H02K7/08 ,  H02K7/116 ,  H02K21/16 ,  F16C19/54 ,  F16H57/021

CPC分类号： F01L1/344 ,  F01L1/047 ,  F01L1/352 ,  F16C19/54 ,  F16H57/021 ,  H02K7/083 ,  H02K7/116 ,  H02K21/16 ,  F01L2820/032 ,  F16C2380/27

摘要： A differential device (5) of an electric actuator (1) includes a driving rotary body (2), a driven rotary body (3), and a planetary rotary body (52). A first speed reducer (5a) is formed between the planetary rotary body (52) and the driving rotary body (2). A second speed reducer (5b) is formed between the planetary rotary body (52) and the driven rotary body (3). The electric actuator (1) includes a first bearing (53) configured to support the planetary rotary body (52) on an inner side of a rotor (42) of an electric motor (4), and a second bearing (54) configured to support the planetary rotary body (52) at a position shifted in an axial direction so as to be prevented from overlapping the rotor (42). The second bearing (54) is formed of a deep-groove ball bearing.