公开(公告)号：US20190214172A1

公开(公告)日：2019-07-11

申请号：US16356696

申请日：2019-03-18

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masashi OHTSUBO ,  Masaaki TANI ,  Takeshi HATTORI ,  Junghwan HWANG ,  Masashi HARA ,  Shin TAJIMA ,  Shinjiro SAIGUSA ,  Kohei ISHII ,  Daisuke OKAMOTO ,  Toshimitsu TAKAHASHI

IPC: H01F1/33 ,  H01F41/02 ,  H01F1/26 ,  B22F3/02 ,  C21D1/26 ,  B22F1/00 ,  B22F1/02 ,  H01F1/20 ,  B22F3/24 ,  C21D6/00 ,  C22C38/02 ,  C22C38/06

CPC classification number: H01F1/33 ,  B22F1/0003 ,  B22F1/02 ,  B22F3/02 ,  B22F3/24 ,  C21D1/26 ,  C21D6/008 ,  C22C38/02 ,  C22C38/06 ,  H01F1/20 ,  H01F1/24 ,  H01F1/26 ,  H01F41/02 ,  H01F41/0246

Abstract: A dust core includes soft magnetic particles, a first coating layer, a second coating layer, and a third coating layer. The first coating layer is made of aluminum oxide with which at least a part of surfaces of the soft magnetic particles are coated. The second coating layer is made of aluminum nitride with which at least a part of a surface of the first coating layer is coated. The third coating layer is made of low-melting-point glass with which at least a part of a surface of the second coating layer is coated. The low-melting-point glass has a softening point lower than an annealing temperature of the soft magnetic particles.

公开(公告)号：US20170110227A1

公开(公告)日：2017-04-20

申请号：US15291350

申请日：2016-10-12

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Daisuke OKAMOTO ,  Toshimitsu TAKAHASHI ,  Sinjiro SAIGUSA ,  Kohei ISHII ,  Naoki IWATA ,  Jung Hwan HWANG ,  Masashi OHTSUBO ,  Takeshi HATTORI ,  Masashi HARA

IPC: H01F1/147 ,  H01F41/02 ,  H01F3/08

CPC classification number: H01F1/14791 ,  H01F1/24 ,  H01F1/28 ,  H01F3/08 ,  H01F41/0246

Abstract: Provided is a compressed powder core that can suppress a decrease in the inductance even when a high magnetic field (of greater than or equal to 40 kA/m) is applied to the compressed powder core while suppressing an iron loss and a decrease in the strength of the compressed powder core. The compressed powder core 1A has soft magnetic particles 11A and aluminum nitride layers 12A formed on the surface layers of the respective soft magnetic particles 11A. The compressed powder core 1A has a ratio of the first differential relative permeability μ′L to the second differential relative permeability μ′H satisfying a relationship of μ′L/μ′H≦6, and has a magnetic flux density of greater than or equal to 1.4 T when a magnetic field of 60 kA/m is applied. The soft magnetic particles of the compressed powder core 1A contain Si in the range of 1.0 to 3.0 mass % and have, when analyzed using XRD, a peak area ratio Sal/Sfe of greater than or equal to 4%, the peak area ratio Sal/Sfe being the ratio of the area Sal of a peak waveform derived from AlN to the area Sfe of a peak waveform derived from Fe.

公开(公告)号：US20160290471A1

公开(公告)日：2016-10-06

申请号：US15051726

申请日：2016-02-24

Applicant: Toyota Jidosha Kabushiki Kaisha

Inventor： Daisuke OKAMOTO

IPC: F16H55/17 ,  F16H3/66

CPC classification number: F16H3/663 ,  F16H1/36 ,  F16H55/0873 ,  F16H2200/202

Abstract: A Ravigneaux planetary gear device includes a long pinion gear and a short pinion gear. A tooth of each of the long pinion gear and the short pinion gear has an end surface with curvature from an inner circumference side toward an outer circumference side of each of the long pinion gear and the short pinion gear and toward a center in a tooth width direction.

Abstract translation: 拉威尼亚行星齿轮装置包括长小齿轮和短小齿轮。 长小齿轮和短小齿轮中的每一个的齿的端面具有从长小齿轮和短小齿轮的每一个的内周侧朝向外周侧的曲率并朝向齿宽度的中心 方向。

公开(公告)号：US20190036313A1

公开(公告)日：2019-01-31

申请号：US16028712

申请日：2018-07-06

Applicant: Yazaki Corporation ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Daisuke OKAMOTO ,  Yoshimichi YAMAO ,  Hiroki UNO

IPC: H02G3/04 ,  B60R16/02

Abstract: A protector includes a main body formed with an accommodation part by a bottom wall part and side wall parts, a lid body mounted on the main body to cover the accommodation part, and a flange part that extends along a longitudinal direction of the main body with a gap at an upper portion in parallel with an outer surface of at least one of the side wall parts of the main body. A plurality of engagement holes are provided at a lower portion of the flange part. A plurality of engagement claws that are provided on at least one edge part of the lid body are locked with engagement edge parts of the engagement holes when the plurality of engagement claws are inserted into the gap between the flange part and the side wall part which faces the flange part with the gap.

公开(公告)号：US20150364235A1

公开(公告)日：2015-12-17

申请号：US14737876

申请日：2015-06-12

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Daisuke OKAMOTO ,  Kiyotaka ONODERA ,  Shinjiro SAIGUSA ,  Kohei ISHII ,  Masashi OHTSUBO ,  Junghwan HWANG ,  Masaaki TANI ,  Takeshi HATTORI

IPC: H01F1/24 ,  B22F3/12 ,  H01F27/255 ,  H01F1/147 ,  H01F41/02 ,  H01F3/08

CPC classification number: H01F1/24 ,  B22F1/02 ,  B22F2998/10 ,  C22C33/0257 ,  C22C33/0264 ,  H01F1/14791 ,  H01F1/33 ,  H01F3/08 ,  H01F27/255 ,  H01F41/0246 ,  B22F2009/0828 ,  B22F9/08 ,  B22F9/04 ,  B22F3/02 ,  B22F3/10

Abstract: A soft magnetic member is formed such that, when a differential relative permeability in an applied magnetic field of 100 A/m is represented by a first differential relative permeability μ′L, and when a differential relative permeability in an applied magnetic field of 40 kA/m is represented by a second differential relative permeability μ′H, a ratio of the first differential relative permeability μ′L to the second differential relative permeability μ′H satisfies a relationship of μ′L/μ′H≦10, and a magnetic flux density in an applied magnetic field of 60 kA/m is 1.15 T or higher.

Abstract translation: 形成软磁性构件，使得当施加的100A / m的磁场中的微分相对磁导率由第一差分相对磁导率μ'L表示时，并且当施加的磁场中的差分相对磁导率为40kA时 / m由第二微分相对磁导率μ'H表示，第一微分相对磁导率μ'L与第二微分相对磁导率μ'H的比率满足μ'L/μ'H＆nlE; 10的关系，a 60kA / m的施加磁场中的磁通密度为1.15T以上。

公开(公告)号：US20190078661A1

公开(公告)日：2019-03-14

申请号：US16035148

申请日：2018-07-13

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hironori ASAOKA ,  Atsushi HONDA ,  Motoki TABUCHI ,  Daisuke OKAMOTO ,  Naoyuki KISHIMOTO ,  Tomoe OSADA

IPC: F16H3/66 ,  F16H61/04 ,  F16H3/095 ,  F16H61/10

Abstract: An automatic transmission includes a main transmission and an auxiliary transmission. The auxiliary transmission includes an auxiliary-transmission-side planetary gear mechanism, a first clutch, and a second clutch. The auxiliary-transmission-side planetary gear mechanism is provided between a pair of main-transmission-side planetary gear mechanisms, and a part of the auxiliary-transmission-side planetary gear mechanism is located within the main transmission. The first clutch fixes rotation of a sun gear of the auxiliary-transmission-side planetary gear mechanism. The second clutch connects a ring gear of the auxiliary-transmission-side planetary gear mechanism with the sun gear.

公开(公告)号：US20180045286A1

公开(公告)日：2018-02-15

申请号：US15671651

申请日：2017-08-08

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masayuki ISHIBASHI ,  Makoto FUNAHASHI ,  Daisuke OKAMOTO

IPC: F16H55/08 ,  B23F17/00 ,  F16H55/06 ,  F16H1/08 ,  F16H1/12

CPC classification number: F16H55/0886 ,  B23F9/00 ,  B23F17/001 ,  F16H1/08 ,  F16H1/125 ,  F16H1/145 ,  F16H55/06 ,  F16H2055/0893

Abstract: A gear assembly that can prevent a reduction in power transmission efficiency and a manufacturing method thereof are provided. The gear assembly comprises a first gear and a second gear. The gear assembly is designed in such a manner that first gear tooth and the second gear tooth are contacted properly to each other in a plane of action when operated in a predetermined condition. A rigidity reducing portion is formed on a first base portion to avoid improper contact in the plane of action when the gear assembly is operated in a different condition.

公开(公告)号：US20170263359A1

公开(公告)日：2017-09-14

申请号：US15500957

申请日：2015-09-04

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masashi OHTSUBO ,  Masaaki TANI ,  Takeshi HATTORI ,  Jung hwan HWANG ,  Masashi HARA ,  Shin TAJIMA ,  Naoki IWATA ,  Shinjiro SAIGUSA ,  Kohei ISHII ,  Daisuke OKAMOTO ,  Toshimitsu TAKAHASHI

IPC: H01F3/08 ,  H01F41/02 ,  B22F1/02 ,  C03C8/02 ,  C22C38/06 ,  C03C8/04 ,  C03C8/08 ,  H01F1/147 ,  C22C38/02

CPC classification number: H01F3/08 ,  B22F1/02 ,  C03C8/02 ,  C03C8/04 ,  C03C8/08 ,  C03C2209/00 ,  C22C38/02 ,  C22C38/06 ,  H01F1/147 ,  H01F1/14791 ,  H01F1/24 ,  H01F41/0246

Abstract: A powder magnetic core having excellent specific resistance or strength. The powder magnetic core has soft magnetic particles, first coating layers that coat the surfaces of the soft magnetic particles and include aluminum nitride, and second coating layers that coat at least a part of the surfaces of the first coating layers and include a low-melting-point glass having a softening point lower than an annealing temperature for the soft magnetic particles. The first coating layers including aluminum nitride are excellent in the wettability to the low-melting-point glass which constitutes the second coating layers and suppress diffusion of constitutional elements between the soft magnetic particles and the low-melting-point glass of the second coating layers. The powder magnetic core can stably exhibit a higher specific resistance and higher strength than the prior art owing to such a synergistic action of the first coating layers and second coating layers.

公开(公告)号：US20170211662A1

公开(公告)日：2017-07-27

申请号：US15414148

申请日：2017-01-24

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Daisuke OKAMOTO ,  Naoki MORIGUCHI ,  Masayuki ISHIBASHI

IPC: F16H3/66 ,  F16H55/17 ,  F16H57/08

CPC classification number: F16H3/663 ,  F16H55/17 ,  F16H57/04 ,  F16H57/0467 ,  F16H57/08 ,  F16H2200/0052 ,  F16H2200/2005 ,  F16H2200/2007 ,  F16H2200/2023 ,  F16H2200/2043 ,  F16H2200/2066 ,  F16H2200/2082

Abstract: A gear assembly wherein transmission efficiency is enhanced by a simple treatment is provided. The gear assembly includes a plurality of gears to transmit torque of a prime mover to an output member. Tooth surfaces of a first gear rotated at a highest speed are individually finished into a plateau surface, and a parameter representing a surface roughness of each of the plateau surface is smaller than those of the tooth surfaces of the other gears.