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：US10011164B2

公开(公告)日：2018-07-03

申请号：US15021331

申请日：2014-09-02

Applicant: NTN CORPORATION ,  Shiro Tamura ,  Aiko Ishikawa ,  Yusuke Shibuya

Inventor： Shiro Tamura ,  Aiko Ishikawa ,  Yusuke Shibuya

IPC: B60K7/00 ,  B60G3/20 ,  B60G3/22 ,  B60K17/04

CPC classification number: B60K7/0007 ,  B60G3/20 ,  B60G3/22 ,  B60G2200/144 ,  B60G2200/182 ,  B60G2204/182 ,  B60G2206/014 ,  B60G2206/50 ,  B60K17/043 ,  B60K17/046 ,  B60K2007/0038 ,  B60K2007/0092

Abstract: An in-wheel motor drive unit (11) includes: a motor portion (11A) that is placed on one side in the direction of the axis of the in-wheel motor drive unit; a wheel hub portion (11C) that is placed on the other side in the direction of the axis of the in-wheel motor drive unit; a speed reduction portion (11B) that is placed between the motor portion and the wheel hub portion and that reduces the speed of output rotation of the motor portion to transmit the resultant output rotation to the wheel hub portion; and a first arm portion (34) that is formed integrally with a speed reduction portion casing (33) forming the outer shape of the speed reduction portion, that projects in a direction perpendicular to the axis from the speed reduction portion casing, and that has its tip end pivotally coupled to a vehicle body-side member.

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：US10464384B2

公开(公告)日：2019-11-05

申请号：US16090600

申请日：2017-03-09

Applicant: NTN CORPORATION

Inventor： Takanori Ishikawa ,  Shiro Tamura

IPC: B60K7/00 ,  B60G3/28 ,  B60G11/16 ,  H02K5/22 ,  B60K17/04

Abstract: An in-wheel motor drive device includes a motor unit having a plurality of power line connecting portions (91, 91, 91), and a plurality of bendable power lines (93, 93, 93) whose one ends connect with the power line connecting portions and whose other ends extend to a vehicle body outside a casing and supplies electric power to the motor unit from the vehicle body, and which in-wheel motor drive device can be steered about a steering axis (K) intersecting with a spring sheet (79c) of a shock absorber. Furthermore, viewing from the steering axial direction, the plurality of power line connecting portions is disposed overlapping a spring sheet.

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.

公开(公告)号：US09771105B2

公开(公告)日：2017-09-26

申请号：US14427746

申请日：2013-09-02

Applicant: NTN Corporation

Inventor： Shiro Tamura ,  Minoru Suzuki

IPC: B60K7/00 ,  B62D21/11 ,  B60G21/05 ,  B60K17/04

CPC classification number: B62D21/11 ,  B60G21/051 ,  B60G2200/21 ,  B60G2200/422 ,  B60G2204/182 ,  B60G2300/50 ,  B60K7/0007 ,  B60K17/043 ,  B60K2007/0038 ,  B60K2007/0092

Abstract: A suspension structure includes a pair of trailing arms (12), a beam member (13) connecting the pair of trailing arms, a bracket (21) connected to a rear end region of the trailing arm, and an in-wheel motor drive device (31) coupled and fixed to the bracket. The in-wheel motor drive device (31) is located above the rear end region of the trailing arm (12), and a lower side of the in-wheel motor drive device (12) is covered by the rear end region of the trailing arm (12) and the bracket (21).