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公开(公告)号：US20240352973A1
公开(公告)日：2024-10-24
申请号：US18683986
申请日：2022-05-27
申请人： NSK LTD.
发明人： Masahide NATORI , Hiroki KOMATA
IPC分类号： F16C33/62
CPC分类号： F16C33/62 , F16C2202/04 , F16C2204/64 , F16C2204/70 , F16C2223/10
摘要： There is provided a rolling bearing capable of suppressing the occurrence of white structure spalling. A rolling bearing contains a structure having a solid solution carbon amount in a martensitic structure after heat treatment of 0.35 mass % or more and 0.65 mass % or less and a volume ratio of spheroidized carbides having a diameter of 200 nm or more of 4.5% or less.
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公开(公告)号：US12117051B2
公开(公告)日：2024-10-15
申请号：US18266654
申请日：2022-01-28
申请人： NSK Ltd.
发明人： Nagao Dohi , Yuya Daikoku
摘要： A reverse-input blocking clutch, comprising a pressed member, an input member, an output member, and an engaging element, the pressed member including a first pressed member element having a pressed surface around an inner peripheral surface thereof and a second pressed member element having a mounting portion fixed to a portion that does not rotate during use, the engaging element configured to transmit rotational torque input to the input member to the output member by moving in a direction away from the pressed surface and to completely block rotational torque reversely input to the output member or transmit a part of the rotational torque reversely input to the output member to the input member and block a remaining part thereof.
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公开(公告)号：US12110925B2
公开(公告)日：2024-10-08
申请号：US17796079
申请日：2021-01-29
申请人： NSK LTD.
发明人： Tomonori Suwa , Kentaro Oguma , Yoshinori Maeda
CPC分类号： F16C33/585 , F16C19/26 , F16C19/364 , F16C33/366 , F16C2240/50
摘要： A generatrix shape to which crowning is applied includes a first generatrix shape which is formed in a central portion in an axial direction of at least one of an outer ring raceway surface, an inner ring raceway surface, and a rolling surface of a roller and is composed of a straight line, a pair of second generatrix shapes which are formed from both ends in the axial direction toward the outside in the axial direction of the first generatrix shape and are composed of a single arc curve, and a pair of third generatrix shapes which are formed from both ends in the axial direction toward the outside in the axial direction of the second generatrix shape and are composed of a composite curve of a single arc curve and a logarithmic curve.
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4.发明授权公开(公告)号：US12103607B2
公开(公告)日：2024-10-01
申请号：US17778221
申请日：2021-10-29
申请人： NSK LTD.
发明人： Shoya Maruyama , Tetsuya Kitazume
IPC分类号： B62D5/04
CPC分类号： B62D5/0484 , B62D5/0469
摘要： In a detection method for detecting an end position of a mechanism portion of a turning device, detection of a limit position of a steering angle in a direction of a torque value is started when the torque value of the mechanism portion loaded by at least one of a drive force from an actuator and steering torque to the mechanism portion exceeds a first threshold. The limit position continues to be detected by storing a peak value of the steering angle in the mechanism portion as the limit position while the torque value of the mechanism portion is between the first threshold and a second threshold. The stored limit position is regarded as the end position indicated by the torque value when the torque value of the mechanism portion exceeds the second threshold.
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公开(公告)号：US12085165B1
公开(公告)日：2024-09-10
申请号：US18681735
申请日：2023-07-20
申请人： NSK Ltd.
CPC分类号： F16H63/062 , F16H25/2219
摘要： A connecting structure includes a first member having a male screw portion on its outer-circumferential surface, a second member having a female screw portion on its inner-circumferential surface that is screwed with the male screw portion, a rotation restraining member placed between the first member and the second member and preventing relative rotation between the first member and the second member, and an elastic member applying elasticity in the axial direction between the first member and the second member.
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公开(公告)号：US12084122B2
公开(公告)日：2024-09-10
申请号：US17419976
申请日：2019-12-13
申请人： NSK LTD.
发明人： Takahiro Tsubaki , Hiroyasu Kumagai
CPC分类号： B62D5/0409 , B62D5/0421 , B62D5/046 , B62D6/00
摘要： A steering apparatus for vehicles that assists and controls a steering system includes a torsional angle control section that calculates a motor current command value to make the torsional angle follow a target torsional angle; the torsional angle control section includes a steering angle disturbance compensating section that calculates a first compensation motor current command value by performing filter processing to the detected steering angle, and the torsional angle control section performs compensation by the first compensation motor current command value in calculation of the motor current command value.
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公开(公告)号：US12077207B2
公开(公告)日：2024-09-03
申请号：US17772779
申请日：2020-11-05
申请人： NSK LTD.
发明人： Seiichi Moriyama , Keisuke Nakao , Kaname Yasuda , Naofumi Fujita
摘要： Provided is an outer tube including a solid-shaped male-shaft portion and a bottomed cylindrical female-tube portion integrally formed with the male shaft portion. A hole cover is externally fitted to the female-tube portion and closes a gap between a dash panel separating the vehicle cabin interior and the vehicle cabin exterior of a vehicle body and the outer tube. In an assembled state in the vehicle body, the solid male-shaft portion is arranged in the vehicle cabin exterior, and an opening portion of a slide hole provided in the female-tube portion is arranged in the vehicle cabin interior.
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公开(公告)号：US12043302B2
公开(公告)日：2024-07-23
申请号：US17267266
申请日：2019-07-17
申请人： NSK Ltd.
发明人： Takeshi Saito
摘要： A screw shaft includes a large-diameter shaft portion having a male-side screw portion over the entire length of the outer circumferential surface thereof; a first small-diameter shaft portion arranged adjacent to one side in the axial direction of the large-diameter shaft portion, and having an outer diameter that is smaller than the outer diameter of the large-diameter shaft portion, and having a helical first rolling mark on the outer circumferential surface thereof; and a second small-diameter shaft portion arranged adjacent to the other side in the axial direction of the large-diameter shaft portion, and having an outer diameter that is smaller than the outer diameter of the large-diameter shaft portion, and having a helical first rolling mark on the outer circumferential surface thereof.
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公开(公告)号：US12017310B2
公开(公告)日：2024-06-25
申请号：US17418942
申请日：2020-02-05
申请人： NSK LTD.
发明人： Nobuyuki Hagiwara , Sonji Ryu
CPC分类号： B23P11/005 , B60B27/0078 , F16C19/385 , F16C43/04 , B60B2310/314 , B60B2310/316 , F16C2226/12 , F16C2326/02
摘要： Axial relative movement of an auxiliary member (30) and a hub body (22z) is performed, the hub body (22z) and an inner race (21) are combined with each other in an axial direction, and a part of the hub body (22z) deformed by a blade (33) of the auxiliary member (30) is disposed inside an engagement concave portion (26) of the inner race (21).
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公开(公告)号：US12012165B2
公开(公告)日：2024-06-18
申请号：US17787088
申请日：2021-10-29
申请人： NSK LTD.
发明人： Tetsuya Kitazume
CPC分类号： B62D6/08
摘要： Provided is a control device for an electric power steering device including a first control portion that derives a first command value based on a steering torque and a second control portion that derives a second command value based on a target command value for a driving support function, where the first control portion generates the first command value by extracting a command value corresponding to a vibration suppression component from a command value including the vibration suppression component derived from the steering torque, adjusting the derived command value according to an operating state of a function of the second control portion, and adding the extracted command value to the adjusted command value.
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