公开(公告)号：US10668803B2

公开(公告)日：2020-06-02

申请号：US16081453

申请日：2016-11-07

Applicant: NTN CORPORATION

Inventor： Shiro Tamura ,  Shinya Taikou

IPC: B60K7/00 ,  B60B27/04 ,  B60K17/356 ,  B60K17/04 ,  B60B35/12 ,  B60B27/00 ,  B60B35/18

Abstract: A wheel hub bearing unit includes an outer ring disposed on an axially outer side of the hub bearing unit and coupled to a wheel, a stationary shaft passing through a center bore of the outer ring, and a plurality of rolling elements arranged in an annular space between the outer ring and the stationary shaft. Motor and speed reduction units are offset from an axis of the wheel hub bearing unit in a direction perpendicular thereto, with the motor unit disposed adjacent to an axially inner end portion of the stationary shaft. The speed reduction unit includes an output gear coupled to the outer ring and a rolling bearing provided between the output gear and the stationary shaft to support the output gear. A carrier disposed on an axially inner side relative to the hub bearing unit is secured to the axially inner end portion of the stationary shaft.

公开(公告)号：US10543742B2

公开(公告)日：2020-01-28

申请号：US16343449

申请日：2016-11-16

Applicant: NTN CORPORATION

Inventor： Shiro Tamura ,  Minoru Suzuki ,  Shinya Taikou

IPC: B60K7/00 ,  B60K17/04 ,  F16H1/06 ,  H02K7/08 ,  H02K7/116 ,  H02K21/12 ,  H02K7/00

Abstract: A large gear and a small gear are provided to an intermediate shaft of an in-wheel motor drive device, and a final output gear configured to mesh with the small gear of the intermediate shaft is provided to an output shaft. The output shaft is supported by bearings on in-board and out-board sides, respectively, and the large gear of the intermediate shaft is arranged between the bearing configured to support the output shaft on the in-board side and the final output gear of the output shaft. The bearing and the large gear are arranged so that, when viewed from the axial direction, a tooth top circle of the large gear of the intermediate shaft and a radially outer circle of the bearing configured to support the output shaft on the in-board side have an intersection point.

公开(公告)号：US10377224B2

公开(公告)日：2019-08-13

申请号：US15762573

申请日：2016-09-16

Applicant: NTN CORPORATION

Inventor： Shiro Tamura ,  Shinya Taikou

IPC: B60K7/00 ,  B60G3/28 ,  B62D7/18 ,  B60B35/14 ,  B60K17/04 ,  B62D7/20 ,  B60B27/00 ,  B60B27/02

Abstract: A strut type suspension device has a retractable strut (111) that connects to an upper portion of an in-wheel motor drive device (10) so as not to relatively move; and a swingable lower arm (116) that is coupled to a lower portion of the in-wheel motor drive device in any direction, and permits vertical swinging of the in-wheel motor drive device and also permits steering of the in-wheel motor drive device about a steering shaft (S) that passes through a coupling point (119) between the lower arm (116) and the in-wheel motor drive device. An axis (M) of the motor portion (21) of the in-wheel motor drive device is arranged above a height of the coupling point (119) of the lower arm (116).

公开(公告)号：US10889178B2

公开(公告)日：2021-01-12

申请号：US16334877

申请日：2017-09-21

Applicant: NTN CORPORATION

Inventor： Shiro Tamura ,  Shinya Taikou

IPC: B60K7/00 ,  B60G7/00 ,  B60K17/04 ,  B62D7/18 ,  B62D7/22 ,  F16D65/092

Abstract: An in-wheel motor drive device includes: a wheel hub bearing portion having an inner ring integrally rotating with a wheel, an outer ring facing the inner ring via a radial gap, and a hub attachment arranged on a more outer diameter side than the outer ring and mounted and fixed to the outer ring; a motor portion driving the inner ring; a casing housing a rotation transmission path from a motor rotation shaft of the motor portion to the inner ring; a suspending bracket having an upper joining seat portion joinable with an upper side suspension member of a suspension device, a lower joining seat portion joinable with a lower side suspension member of the suspension device, and an intermediate portion connecting the upper joining seat portion and the lower joining seat portion; and fixing means for mounting and fixing the suspending bracket to the hub attachment.

公开(公告)号：US10821824B2

公开(公告)日：2020-11-03

申请号：US16077533

申请日：2016-09-29

Applicant: NTN CORPORATION

Inventor： Shiro Tamura ,  Shinya Taikou

IPC: B60K7/00 ,  F16H1/20 ,  H02K7/116 ,  H02K7/14

Abstract: An in-wheel motor drive device speed reducer includes an input shaft coupled to a motor rotating shaft. an output shaft coupled to a wheel hub and parallel to the input shaft, and one or more intermediate shafts parallel to the input shaft and the output shaft. An input gear coupled to the input shaft, a plurality of intermediate gears coupled to the intermediate shafts, and an output gear coupled to the output shaft mesh with each other and configure a drive transmission path leading to the output gear from the input gear through the plurality of intermediate gears. When viewed axially using the intermediate shaft, axes of the output shaft, the at least one intermediate shaft, and the input shaft are arranged in this order in the vehicle front-to-rear direction. The axis of the at least one intermediate shaft is disposed above the axes of the output and input shafts.

公开(公告)号：US10792995B2

公开(公告)日：2020-10-06

申请号：US16078174

申请日：2016-11-24

Applicant: NTN CORPORATION

Inventor： Shiro Tamura ,  Shinya Taikou

IPC: B60K7/00 ,  B60K17/14 ,  F16C19/18 ,  F16C35/063 ,  F16C35/067 ,  B60K17/04 ,  F16C19/06

Abstract: A speed reduction unit (31) includes an input shaft (32) coupled to a motor rotary shaft (22) of a motor unit (21), an input gear (33) coupled to the input shaft, a cylindrical output shaft (41) coupled to an outer ring (12), and an output gear (40) coupled to the output shaft, and constructs a driving-force transmission path that reduces the rotational speed of the input gear and transmits the reduced rotational speed to the output gear. The output shaft is rotatably supported at both ends by a first output-shaft bearing (44) rotatably supporting an outer diameter of an axially outer end side of the output shaft and a second output-shaft bearing (46) rotatably supporting an inner diameter of an axially inner end side of the output shaft.

公开(公告)号：US10675965B2

公开(公告)日：2020-06-09

申请号：US16078053

申请日：2016-10-12

Applicant: NTN CORPORATION

Inventor： Shiro Tamura ,  Shinya Taikou

IPC: B60K7/00 ,  B60K17/14 ,  F16H1/06 ,  B60K17/04 ,  H02K7/116 ,  H02K7/14 ,  B60W20/15 ,  B60W10/08

Abstract: The speed reduction unit (31) of the in-wheel motor driving device (10) includes an input shaft (32), an output shaft (41) coupled to a wheel hub (12) and extending in parallel with the input shaft, one or more intermediate shafts (35, 38) extending in parallel with the input shaft and output shaft, an input gear (33) coupled to the input shaft, an output gear (40) coupled to the output shaft, and a plurality of intermediate gears (34, 36, 37, 39) coupled to the intermediate shaft. The input gear, intermediate gears, and output gear are engaged with one another to form a driving force transmission path connecting the input gear to the output gear through the intermediate gears. At least one intermediate gear (37) of the intermediate gears has a diameter greater than the diameter of the output gear.

公开(公告)号：US10461599B2

公开(公告)日：2019-10-29

申请号：US15503750

申请日：2015-08-10

Applicant: NTN CORPORATION ,  Shiro Tamura ,  Takanori Ishikawa ,  Shinya Taikou

Inventor： Shiro Tamura ,  Takanori Ishikawa ,  Shinya Taikou

IPC: F16H57/027 ,  H02K5/04 ,  H02K5/20 ,  H02K5/22 ,  H02K9/02

Abstract: An automotive motor drive unit includes a breather passage (Q) provided in casings (21a, 21r, 22a, 22r) that form an outer shape of the automotive motor drive unit; an entrance port (48m) that is provided at an inlet side of the breather passage and that connects with an internal space (L) defined by the casings; an exit port (67) that is provided at an outlet side of the breather passage and that connects with a space outside the casings; and obstacles (24, 25, 26) standing to form an inner wall of the breather passage and preventing lubrication oil in the internal space from proceeding straight ahead via the entrance port toward the exit port.

公开(公告)号：US10179556B2

公开(公告)日：2019-01-15

申请号：US15539746

申请日：2015-12-25

Applicant: NTN CORPORATION

Inventor： Shiro Tamura ,  Youhei Imanishi ,  Shinya Taikou

IPC: B60R16/02 ,  H02G3/04 ,  H02G3/22 ,  B60K7/00

Abstract: A cable holding structure includes: an elastic member (23) having through holes (23h) through which cables (18) are passed; and a fixing portion (21, 22) having openings (21h, 22h) through which the cables are inserted, and disposed on a vehicle body-side member (19) to fasten the elastic member. The cables inserted through the through holes are restrained by the elastic member subjected to a fastening force.