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公开(公告)号：US10920884B2
公开(公告)日：2021-02-16
申请号：US16339385
申请日：2016-11-04
Applicant: NTN CORPORATION
Inventor： Shiro Tamura , Yusuke Shibuya
Abstract: In an in-wheel motor drive device, a speed reduction part is a parallel shaft gear reducer that includes a plurality of gear shafts extending in parallel to one another. One of the gear shafts is coupled with the rotation shaft of the motor part, the other one of the gear shafts is coupled with the wheel hub of the wheel hub bearing part. Remaining gear shafts decelerate the rotation of the motor part and transmit it to the wheel hub. The motor drive device includes a parking gear attached to any of the gear shafts. The parking pawl has a projection portion engaged with a recess portion of the parking gear. A movement member enables a parking pawl to move between a locking position engaged with the recess portion and an unlocking position not engaged therewith. The parking gear, the parking pawl, and movement member are housed inside a housing.
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公开(公告)号：US10150359B2
公开(公告)日：2018-12-11
申请号：US15120800
申请日：2015-01-29
Applicant: NTN CORPORATION
Inventor： Shiro Tamura
Abstract: In the link structure linking an in-wheel motor drive device (11) placed in a hollow area of a road wheel (W) of a turnable wheel to a damper (31), a damper bracket (32) extends in the vehicle traverse direction and at least a transversely outer end (321) of the damper (31) is placed in the hollow area of the road wheel (W). A first joint (18) is placed in the hollow area of the road wheel, and rotatably links the transversely outer end (321) of the damper bracket (32) to the in-wheel motor drive device (11). The damper (31) has a lower end (311) coupled to a transversely inner end (322) of the damper bracket (32).
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公开(公告)号：US20150203159A1
公开(公告)日：2015-07-23
申请号：US14427746
申请日：2013-09-02
Applicant: Shiro TAMURA , Minoru SUZUKI , NTN CORPORATION
Inventor： Shiro Tamura , Minoru Suzuki
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).
Abstract translation: 悬挂结构包括一对牵引臂（12），连接该对拖臂的梁构件（13），连接到后臂的后端区域的支架（21）和一个轮内电动机驱动装置 （31）联接并固定到支架上。 轮内电机驱动装置（31）位于牵引臂（12）的后端区域的上方，轮内电动机驱动装置（12）的下侧被后方的后端区域覆盖 臂（12）和支架（21）。
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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).
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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
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.
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Patent Agency Ranking
公开(公告)号：US10906372B2
公开(公告)日：2021-02-02
申请号：US16333669
申请日：2017-09-20
Applicant: NTN CORPORATION
Inventor： Yusuke Shibuya , Shiro Tamura
IPC: B60G21/055 , B60G15/07 , B60K7/00 , B60G7/00
Abstract: A suspension structure for an in-wheel motor drive device of the present invention includes an in-wheel motor drive device (10), a shock absorber (76), a torsion bar (81), and a stabilizer link (86), wherein: the shock absorber includes an upper spring seat (79a) provided in an upper end region of the shock absorber and a lower spring seat (79b) provided in a lower end region of the shock absorber and forming a pair with the upper spring seat; an upper end (87a) of the stabilizer link is arranged between a vehicle back edge (79d) of the lower spring seat and a vehicle front edge (79c) of the lower spring seat; and a lower end (87b) of the stabilizer link is arranged so as to overlap with a hub wheel (12) as viewed in an axial direction of the hub wheel.
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7.发明授权公开(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
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).
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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
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.
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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.
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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
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.
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