公开(公告)号：US11472250B2

公开(公告)日：2022-10-18

申请号：US17636515

申请日：2021-01-25

Applicant: NSK LTD.

Inventor： Shin Yamamoto ,  Takahiro Sushi ,  Cyou Kyo ,  Mitsuru Oike ,  Shunsuke Suzuki

IPC: B60G17/015 ,  B60G15/04

Abstract: A suspension device has an upper shell having a stepped section around an inner circumferential surface; a lower shell; a ball screw shaft rotatably supported by the upper shell; a bearing unit arranged between a part of the ball screw shaft and the upper shell, and having an outer side part in a radial direction including a side surface that comes in contact with a side surface on the other side in the axial direction of the stepped section; a ball nut screwed on the ball screw shaft; an inner tube joined to the lower shell and the ball nut; an electric motor; and a coil spring, and a circumscribed circle diameter of the ball nut and the inner tube is less than an inner diameter dimension of the stepped section.

公开(公告)号：US12060116B2

公开(公告)日：2024-08-13

申请号：US18684209

申请日：2023-06-13

Applicant: NSK Ltd.

Inventor： Shin Yamamoto ,  Atsushi Maeda ,  Shohei Kaneko ,  Cyou Kyo ,  Hideyuki Saito

IPC: B62D5/04 ,  F16D43/21

CPC classification number: B62D5/043 ,  F16D43/211

Abstract: An actuator with reverse input blocking clutch has a function of switching the reverse input blocking clutch to a state in which torque can be transmitted between an input member and an output member, in a state in which reverse torque is input to the output member from an output-side mechanism, by applying torque to the input member by an actuator in an opposite direction to a direction of the reverse torque, and then by giving an instruction to the actuator to apply torque having a magnitude smaller than a magnitude of the reverse torque to the input member in the opposite direction, transmitting the reverse torque to the input member.

公开(公告)号：US11305653B2

公开(公告)日：2022-04-19

申请号：US16334905

申请日：2017-09-15

Applicant: NSK LTD.

Inventor： Ryuho Morita ,  Yasuyuki Matsuda ,  Mitsuru Oike ,  Daisuke Gunji ,  Shin Yamamoto

IPC: B60L15/20 ,  B60K1/02 ,  B60K7/00 ,  B60K17/02 ,  B60K17/04 ,  B60K17/08 ,  F16H3/72 ,  F16H3/66 ,  B60L9/18

Abstract: An electric vehicle drive device includes: a first motor; a second motor; a transmission mechanism coupled to the first motor and the second motor; and a control unit configured to control operation of the first motor and the second motor based on a drive signal. The transmission mechanism includes: a sun gear shaft coupled to the first motor; a first planetary gear mechanism; a second planetary gear mechanism; and a one-way clutch configured to restrict a rotation direction of a first carrier to a predetermined positive rotation direction. The drive signal includes gear change information indicating a first state in which the second motor is controlled based on torque or a second state in which the second motor is controlled based on rotation speed, and throttle information indicating an acceleration of rotation speed of a wheel.

公开(公告)号：US10940751B2

公开(公告)日：2021-03-09

申请号：US16480933

申请日：2018-06-05

Applicant: Nsk Ltd.

Inventor： Yasuyuki Matsuda ,  Daisuke Gunji ,  Shin Yamamoto ,  Toshirou Toyoda

IPC: B60K17/02 ,  B60K7/00 ,  B60K17/04 ,  B60K17/08 ,  F16H3/72 ,  H02K7/00 ,  H02K7/108 ,  H02K7/116 ,  F16D41/00

Abstract: An electric vehicle driving device includes a first motor, a second motor, a transmission device to which power of at least one of the first motor and the second motor is transmitted, and an output member that rotates with power output from the transmission device. A rotation axis of the first motor, a rotation axis of the second motor, and a rotation axis of the transmission device are arranged in parallel to a rotation axis of the output member. When seen from an axial direction parallel to the rotation axis of the output member, the rotation axis of the first motor is located on one side of a straight line passing through the rotation axis of the output member and the rotation axis of the transmission device and the rotation axis of the second motor is located on the other side of the straight line.

公开(公告)号：US12151738B2

公开(公告)日：2024-11-26

申请号：US18043170

申请日：2021-08-31

Applicant: NSK LTD.

Inventor： Yuichiro Taguchi ,  Shin Yamamoto

IPC: B62D1/187 ,  B62D1/181

Abstract: A steering column device includes a steering column; and a telescopic actuator. The steering column includes a first column member, a second column member assembled to the first column member in a manner of being displaceable relative to the first column member in an axial direction, and a low-friction sliding member disposed between the first column member and the second column member. The telescopic actuator includes a telescopic motor, and displaces the second column member in the axial direction with respect to the first column member by using the telescopic motor as a drive source.