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公开(公告)号：US20230040408A1
公开(公告)日：2023-02-09
申请号：US17790583
申请日：2021-06-29
Applicant: NSK Ltd.
Inventor： Akihiro YAMAMOTO , Hirotaka KISHIDA
Abstract: A power transmission path switching device has a friction engaging device; a rotation transmission state switching device comprising a first member and a second member arranged coaxial with each other and having: a free mode and/or a one-way clutch mode allowing rotation of the first member with respect to the second member, and a lock mode preventing rotation of the first member with respect to the second member; and a control device that, when connecting the friction engaging device and setting the rotation transmission state switching device to the lock mode, has a function of connecting the friction engaging device, and then while maintaining the friction engaging device in a connected state, switches the rotation transmission state switching device to the lock mode.
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公开(公告)号：US20170299024A1
公开(公告)日：2017-10-19
申请号：US15514285
申请日：2014-09-26
Applicant: NSK LTD.
Inventor： Hiroyasu YOSHIOKA , Eiji INOUE , Takashi IMANISHI , Hirotaka KISHIDA
CPC classification number: F16H15/50 , F16H13/08 , F16H25/186 , F16H55/56 , F16H57/08 , F16H63/065 , F16H63/3023 , F16H2057/087
Abstract: Projections protruding towards a cam plate and a disc are provided on both axial side surfaces of the retainer at a plurality of positions at which phases of the projections in the circumferential direction are offset from pockets. One axial direction surface of the cam plate and the disc are formed with concave portions at portions facing the respective projections. The concave portions have an axial depth deepest at a center portion thereof in the circumferential direction and becoming shallower towards both end portions thereof.
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公开(公告)号：US20220268358A1
公开(公告)日：2022-08-25
申请号：US17632698
申请日：2020-12-11
Applicant: NSK LTD.
Inventor： Hirotaka KISHIDA , Ricardo RODRIGUEZ LOPEZ , Seigou URAKAMI , Shohei KANEKO , Akihiro YAMAMOTO
Abstract: A cam device having a drive cam and a driven cam; and a friction engagement device having at least one friction plate and at least one separation plate are provided. The friction engagement device is configured so as to be put into a connected state by pressing the friction plate and the separation plate against each other by the driven cam, and a disconnected state. Also provided are a rotation transmission state switching device having a first member and a second member coaxially arranged, and a mode selecting part configured to rotate or displace in the axial direction according to rotation of the drive cam. The rotation transmission state switching device has at least one mode of a free mode and a lock mode of the first member and the second member, and a one-way clutch mode.
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公开(公告)号：US20210277964A1
公开(公告)日：2021-09-09
申请号：US17053902
申请日：2019-04-26
Applicant: NSK LTD.
Inventor： Yuya DAIKOKU , Hirotaka KISHIDA , Hiroki HASHIGUCHI , Toshirou TOYODA
Abstract: Provided is a reverse input blocking clutch capable of easily releasing a state in which rotation of an output member is prevented or suppressed.
The reverse input blocking clutch 5 includes an input member 14, an output member 15, a pressed member 16, and an engaging member 17. When a rotational torque is inputted to the input member 14, the engaging member 17 moves in a direction away from a pressed surface 28 of the pressed member 16 due to engagement with the input member 14, and transmits the rotational torque inputted to the input member 14 to the output member 15 due to engagement with the output member 15; and when rotational torque is reversely inputted to the output member 15, moves in the direction closer to the pressed surface 28 based on engagement with the output member 15, and by being pressed against the pressed surface 28 does not transmit the rotational torque reversely inputted to the output member 15 to the input member 14, or transmits only part thereof to the input member 14 due to engagement with the input member 14.-
公开(公告)号：US20230366451A1
公开(公告)日：2023-11-16
申请号：US18030370
申请日：2021-08-27
Applicant: NSK Ltd.
Inventor： Akihiro YAMAMOTO , Hirotaka KISHIDA
IPC: F16H3/54
CPC classification number: F16H3/54 , F16H2200/0034
Abstract: A two-speed transmission includes: an input member; an output member; a rotating member; a first engaging device switching engagement between first and second friction plates to switch the input member and the rotating member to an integrally rotating state or a relatively rotating state; a second engaging device switching the rotating member to a rotatable or non-rotatable state; an elastic biasing means applying a force pressing the first and second friction plates; a pressing device releasing the pressing force; a first bearing between the elastic biasing means and the pressing device; a second bearing between the rotating member and the pressing device or the fixed portion; and a planetary speed reduction mechanism having a sun element connected to the input member or the rotating member, a carrier connected to one of the input member or the rotating member and the output member, and a ring element connected to the other.
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Patent Agency Ranking
公开(公告)号：US20160238112A1
公开(公告)日：2016-08-18
申请号：US15028065
申请日：2014-04-02
Applicant: NSK LTD.
Inventor： Hirotaka KISHIDA , Junji ONO
IPC: F16H15/38
CPC classification number: F16H15/38 , F16H61/6649
Abstract: Provided is a single-cavity toroidal continuously variable transmission capable of suppressing gyro slippage and achieving mitigation of bearing loss and a longer service life.In the single-cavity toroidal continuously variable transmission, a pitch circle diameter (PCD) of the output-side bearing 46 is smaller than that of the input-side bearing 43 and a ball diameter of the output-side bearing 46 is smaller than that of the input-side bearing 43. Therefore, centrifugal force acting on the ball of the output-side bearing on a speed increasing side with a low load can be suppressed. Therefore, gyro slippage can be suppressed and mitigation of bearing loss can be achieved. Furthermore, with a groove R ratio of the output-side bearing 46 smaller than that of the input-side bearing 43, a longer service life can be achieved even when the pitch circle diameter (PCD) and ball diameter of the output-side bearing 46 are smaller than those of the input-side bearing 43.
Abstract translation: 提供了一种单腔环形无级变速器，能够抑制陀螺仪打滑，减少轴承损耗和延长使用寿命。 在单腔环形无级变速器中，输出侧轴承46的节圆直径（PCD）小于输入侧轴承43的节圆直径（PCD），输出侧轴承46的球直径小于输出侧轴承46的球直径。 因此，可以抑制作用在低负荷的增速侧的输出侧轴承的球上的离心力。 因此，可以抑制陀螺仪滑移，并且可以实现轴承损失的减轻。 此外，即使输出侧轴承46的凹槽R比小于输入侧轴承43的凹槽R比，即使在输出侧轴承的节圆直径（PCD）和滚珠直径 46小于输入侧轴承43的尺寸。
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公开(公告)号：US20250084901A1
公开(公告)日：2025-03-13
申请号：US18727492
申请日：2022-09-28
Applicant: NSK Ltd.
Inventor： Akihiro YAMAMOTO , Hirotaka KISHIDA
IPC: F16H61/18 , F16D13/52 , F16D23/12 , F16D28/00 , F16D41/16 , F16D47/04 , F16D127/02 , F16D127/06 , F16H3/54 , F16H63/30 , F16H63/34
Abstract: Provided are a friction engagement device connected by pressing a friction plate and a separate plate against each other and disconnected by releasing the force pressing them; a rotation transmission state switching device having at least a free mode in which rotation of a first member relative to a second member is allowed and a lock mode in which rotation of the first member relative to the second member is prevented; and a control device having a function to switch the rotation transmission state switching device to a lock mode while maintaining the friction engagement device in a connected state and a function to switch to a state where the friction engagement device is disconnected and the rotation transmission state switching device is in a free mode.
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公开(公告)号：US20220060084A1
公开(公告)日：2022-02-24
申请号：US17274869
申请日：2019-09-11
Applicant: NSK LTD.
Inventor： Hirotaka KISHIDA , Toshirou TOYODA , Yuya DAIKOKU
Abstract: The electric motor with a reverse input cutoff clutch has an output shaft. The output shaft is configured by connecting a first shaft and a second shaft that are coaxially arranged with each other via the reverse input cutoff clutch. The second shaft is rotatably supported to a housing by one radial bearing. The reverse input cutoff clutch has a function that, when rotational torque is inputted to the first shaft, transmits the rotational torque inputted to the first shaft to the second shaft, and when rotational torque is reversely inputted to the second shaft, completely cuts off the rotational torque reversely inputted to the second shaft, and does not transmit the rotational torque to the first shaft, or transmits a part of the rotational torque to the first shaft, and cuts off the remaining part.
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公开(公告)号：US20200238776A1
公开(公告)日：2020-07-30
申请号：US16493579
申请日：2018-10-12
Applicant: NSK LTD.
Inventor： Hirotaka KISHIDA , Yasuyuki MATSUDA
Abstract: An extension-retraction link includes: a stationary shaft having a tubular shape; a first universal joint that connects the stationary shaft to a vehicle body side member; a movable shaft that can slide with respect to the stationary shaft; a second universal joint that connects the movable shaft to a hub carrier; and an actuator that moves the movable shaft. The movable shaft includes: a first plane surface; a second plane surface making an angle with respect to the first plane surface; a third plane surface opposite the first plane surface; and a fourth plane surface opposite the second plane surface. The stationary shaft includes: first to fourth bushes in contact with the first to fourth plane surfaces, respectively; a first elastic member pressing the third bush to the third plane surface; and a second elastic member pressing the fourth bush to the fourth plane surface.
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公开(公告)号：US20170045123A1
公开(公告)日：2017-02-16
申请号：US15119008
申请日：2015-01-29
Applicant: NSK LTD.
Inventor： Hirotaka KISHIDA
IPC: F16H15/38 , F16H57/021
CPC classification number: F16H15/38 , F16H57/021 , F16H2057/0216
Abstract: A toroidal continuously variable transmission include a pair of disks which is provided rotatably and concentrically with each other in a state where inner surfaces of respective disks are opposed to each other and a power roller held between the disks opposing to each other. One of the disks is supported on a shaft. The other of the disks is rotatably supported, via a first bearing, on a hollow shaft into which the shaft is inserted and which is non-rotatably supported by a support member. The shaft is rotatably supported on the hollow shaft via a second bearing.
Abstract translation: 环形无级变速器包括一对盘，它们在各个盘的内表面彼此相对的状态下以可旋转和同心的方式设置，以及保持在彼此相对的盘之间的动力辊。 其中一个磁盘支撑在轴上。 另一个盘通过第一轴承可旋转地支撑在轴被插入其中的中空轴上，并且由支撑构件不可旋转地支撑。 轴通过第二轴承可旋转地支撑在中空轴上。
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