公开(公告)号：US11548337B2

公开(公告)日：2023-01-10

申请号：US16334865

申请日：2017-09-21

Applicant: NTN CORPORATION

Inventor： Shiro Tamura ,  Shinya Taikou

IPC: B60G3/28 ,  B60G7/00 ,  B60K7/00 ,  F16H57/021 ,  F16H57/02

Abstract: An in-wheel motor drive device (10) includes: a motor portion (21); a casing (43) housing a rotation transmission path from a motor rotation shaft of the motor portion to a rotating wheel; a suspending bracket (61) including an upper joining seat portion (62) joinable with an upper side suspension member (76) of a suspension device, a lower joining seat portion (64) joinable with a lower side suspension member (71) of the suspension device, and an intermediate portion (63) connecting the upper joining seat portion and the lower joining seat portion, and a fixing means (69) for mounting and fixing the suspending bracket (61) to an outer wall surface of the casing (43).

公开(公告)号：US10938272B2

公开(公告)日：2021-03-02

申请号：US16340204

申请日：2016-11-02

Applicant: NTN CORPORATION

Inventor： Shinya Taikou ,  Shiro Tamura ,  Tomohisa Uozumi

IPC: H02K7/08 ,  B60K7/00 ,  F16H1/08 ,  H02K7/116

Abstract: An in-wheel motor drive device includes an electric motor section, a speed reducer section having a speed-reduction structure using parallel shaft gears, a wheel bearing section, and a casing. The parallel shaft gears include at least one intermediate shaft each having an input-side and output-side intermediate gears, and an output shaft having a final output gear. The at least one intermediate shaft and the output shaft each have both end portions supported by rolling bearings to be rotatable. Among the rolling bearings, at least one rolling bearing arranged close to the input-side intermediate gear or a rolling bearing arranged close to the final output gear is arranged in a radially-inner-side recess portion of the gear, which is arranged close to the corresponding rolling bearing.

公开(公告)号：US10414264B2

公开(公告)日：2019-09-17

申请号：US15762577

申请日：2016-09-16

Applicant: NTN CORPORATION

Inventor： Shiro Tamura ,  Shinya Taikou

IPC: B60K7/00 ,  B62D7/18 ,  B60B27/00 ,  B60B35/14 ,  B60B27/04 ,  B60G3/04 ,  B60G3/06 ,  B60G7/00

Abstract: An in-wheel motor drive device (10) includes: a wheel hub bearing portion (11); a motor portion (21) and a deceleration portion (31) disposed in an upwardly offset manner with respect to an axis of the wheel hub bearing portion (11); and a carrier (101) projecting downward to a position below the wheel hub bearing portion (11). A suspension connection portion (101c) is mounted on a lower end of the carrier (101), the suspension connection portion (101c) to be connected with a suspension device (116) so as to be directable in any direction. The suspension connection portion (101c) is disposed in an overlapping manner with the wheel hub bearing portion (11) with respect to a position in an axial direction of the wheel hub bearing portion (11).

公开(公告)号：US11923749B2

公开(公告)日：2024-03-05

申请号：US17262794

申请日：2019-08-09

Applicant: NTN CORPORATION

Inventor： Aiko Myouki ,  Tetsuya Yamamoto ,  Shinya Taikou ,  Shiro Tamura ,  Naoya Takeuchi

IPC: H02K5/22 ,  H02K11/00 ,  H02K11/21 ,  H02K7/116

CPC classification number: H02K5/225 ,  H02K11/21 ,  H02K7/116

Abstract: A casing (10) is divided into a cylindrical first case portion (51) integrally having a partition part (54), a second case portion (52) connected to one end of the first case portion in an axial direction and configured to cover a second space (S2), and a third case portion (53) connected to the other end of the first case portion in the axial direction and configured to cover a first space (S1). A signal cable passed through a through hole (54c) of the partition part extends from a sensor (72, 73) to an external connector (81) provided in the second case portion or the third case portion, and is anchored to the first case portion (51) in the vicinity of a through hole (54c) of the partition part.

公开(公告)号：US11465488B2

公开(公告)日：2022-10-11

申请号：US16316386

申请日：2017-06-23

Applicant: NTN CORPORATION

Inventor： Huaxia Li ,  Shinya Taikou ,  Shiro Tamura

IPC: B60K7/00 ,  B60K17/04 ,  F16H57/02 ,  F16H57/04 ,  H02K5/20 ,  H02K7/116 ,  H02K9/19 ,  B60K11/02 ,  H02K7/00

Abstract: A lubricating oil supply structure in an in-wheel motor drive device (10) includes an oil tank (47) provided a lower part of a motor unit (21) and/or a reducer unit (31), configured to store lubricating oil, an oil pump (54) configured to pump up lubricating oil from the oil tank, and an oil pipe (70) fixedly attached in an upper part of the motor unit and/or the reducer unit. The oil pipe (70) includes an inlet (76) through which lubricating oil pumped up from the oil pump (54) flows therein, and at least one outlet (77) provided between one end thereof and the other end thereof, configured to discharge lubricating oil flown in from the inlet (76) downwards.

公开(公告)号：US10933737B2

公开(公告)日：2021-03-02

申请号：US16342253

申请日：2016-11-24

Applicant: NTN CORPORATION

Inventor： Shiro Tamura ,  Minoru Suzuki ,  Shinya Taikou

IPC: B60K7/00 ,  H02K7/116 ,  F16H1/08 ,  F16H1/06 ,  H02K7/00 ,  B60K1/02 ,  H02K7/08

Abstract: An in-wheel motor drive device includes an electric motor section, a speed reducer section, a wheel bearing section, and a casing. The speed reducer section includes a speed-reduction structure using a parallel shaft gear. The parallel shaft gear includes an input shaft, which is coupled to the electric motor section, an input gear, at least one intermediate shaft including input-side and output-side intermediate gears, an output shaft, which is coupled to the wheel bearing section, and a final output gear. The input, intermediate, and output shafts are supported by rolling bearings to be rotatable. At least two rolling bearings configured to support the intermediate and output shafts on an out-board side and two rolling bearings configured to support the intermediate and output shafts on an in-board side are arranged at positions at which respective bearing widths are prevented from being superimposed with each other in an axial direction.

公开(公告)号：US11766890B2

公开(公告)日：2023-09-26

申请号：US16476907

申请日：2018-01-16

Applicant: NTN CORPORATION

Inventor： Naoya Takeuchi ,  Shiro Tamura ,  Shinya Taikou

IPC: B60B27/00 ,  B60K7/00 ,  F16D65/12 ,  B60B35/14

CPC classification number: B60B27/0078 ,  B60B27/0015 ,  B60B27/0052 ,  B60B27/0094 ,  B60B35/14 ,  B60K7/0007 ,  F16D65/12 ,  B60B2380/12 ,  B60B2380/75 ,  B60K2007/0038 ,  B60K2007/0061

Abstract: An in-wheel motor drive device (10) includes a wheel hub bearing unit (11) having an outer ring (13), an inner ring (12) protruding from the outer ring to one side in an axial (O) direction, rolling elements (14) between the outer ring and the inner ring, and a fixing bolt (15) for fixing the outer ring to a non-rotary member (102); and a brake disk (55) having a connecting portion (58) configured to connect with one end of the inner ring, a cylindrical portion (57) extending from the connecting portion to the other side in the axial direction and disposed coaxially to the inner ring, and at least a part of the fixing bolt is received in an internal space of the cylindrical portion.

公开(公告)号：US10894473B2

公开(公告)日：2021-01-19

申请号：US16340211

申请日：2016-11-24

Applicant: NTN CORPORATION

Inventor： Shinya Taikou ,  Shiro Tamura ,  Tomohisa Uozumi

IPC: B60K7/00 ,  F16H1/06 ,  F16H1/20 ,  F16H57/021 ,  F16H57/03

Abstract: Provided is an in-wheel motor drive device (21) including: a motor (28); a wheel bearing (53); and a speed reducer (38). The speed reducer (38) comprises: a speed reducer input shaft (Sin) including an input gear (34); a speed reducer output shaft (Sout) including an output gear (37); and an intermediate shaft (Sm) including a small-diameter intermediate gear (36) and a large-diameter intermediate gear (35). The large-diameter intermediate gear (35) has a circumscribed circle which is superimposed with a pitch circle of a plurality of rolling elements (42) of the wheel bearing (53) when viewed from an axial direction.

公开(公告)号：US10792994B2

公开(公告)日：2020-10-06

申请号：US16320536

申请日：2017-07-03

Applicant: NTN CORPORATION

Inventor： Shinya Taikou ,  Shiro Tamura

IPC: B60K7/00 ,  H02K5/22 ,  B60B37/10 ,  H02K5/16 ,  H02K7/18

Abstract: A casing (43) of an in-wheel motor drive device (10) includes a tubular body first casing (43g) disposed on one side in an axial (O) direction and a tubular body second casing (43a) disposed on the other side in the axial direction. Each of the body first casing and the body second casing has an annular abutting surface (43j) so that the annular abutting surfaces of the body first casing and the body second casing abut on each other in the axial direction. A hub carrier (18) has at its tip end a connecting portion (82s) for rotatable connection to a vehicle body-side member (81). The connecting portion is disposed so as not to overlap the abutting surfaces in the axial direction and so as to overlap the body first casing or the body second casing in the axial direction.

公开(公告)号：US10723288B2

公开(公告)日：2020-07-28

申请号：US16090598

申请日：2016-09-29

Applicant: NTN CORPORATION

Inventor： Shogo Okamoto ,  Shiro Tamura ,  Minoru Suzuki ,  Yusuke Shibuya ,  Shinya Taikou

IPC: B60K7/00 ,  B60R16/02 ,  B60K17/04 ,  B60G3/20 ,  B60R16/023 ,  B60R16/03

Abstract: An in-wheel motor power line (93) includes, between its one end and the other end, an in-wheel motor drive device-side region (93d), an intermediate region (93e), and a vehicle body-side region (93f) which extend continuously. The in-wheel motor drive device-side region (93d) extends in the vertical direction, and the lower side of the in-wheel motor drive device-side region is connected to the intermediate region. The vehicle body-side region extends in the vertical direction, and the lower side of the vehicle body-side region is connected to the intermediate region. The intermediate region is curved with its both sides located at a higher position and its intermediate part located at a lower position.