公开(公告)号：US20240319029A1

公开(公告)日：2024-09-26

申请号：US18608325

申请日：2024-03-18

申请人： Proterial, Ltd. ,  NSK Ltd.

发明人： Akitoshi FUJIMORI ,  Takashi ONIMOTO ,  Seigou URAKAMI ,  Takumi SHINOJIMA ,  Kota FUKUDA

IPC分类号： G01L3/10

CPC分类号： G01L3/102

摘要： A magnetostrictive torque sensor is configured to be attached around a rotating shaft exhibiting a magnetostrictive effect and detects torque transmitted by the rotating shaft. The magnetostrictive torque sensor includes a holder being composed of a resin and including a cylinder portion with a hollow cavity in a center through which the rotating shaft is inserted, a flexible substrate that includes a detection portion on which a coil group composed of a combination of a plurality of detection coils aligned in a predetermined direction is formed by a wiring pattern, and a signal line portion on which a plurality of signal lines electrically connecting the coil group to an external device are formed by a wiring pattern, and a cylindrical magnetic ring being composed of a soft magnetic material and being arranged around an outer circumference of the cylinder portion of the holder. The flexible substrate is arranged in such a manner that the detection portion is curved and located between the cylinder portion of the holder and the magnetic ring, and a portion of the signal line portion is led out of the holder. The holder includes an annular wall surrounding an outer circumference of one axial end of the magnetic ring. The magnetic ring includes a retention hole that opens on an outer circumferential surface facing an inner circumferential surface of the annular wall. The holder and the magnetic ring are fixed by a shaft-shaped fastener that penetrates the annular wall and is inserted into the retention hole of the magnetic ring.

公开(公告)号：US20200300299A1

公开(公告)日：2020-09-24

申请号：US16086106

申请日：2018-04-10

申请人： NSK LTD.

发明人： Takanori TANAKA ,  Seigou URAKAMI ,  Seiji NAKAMURA

IPC分类号： F16C33/58 ,  F16C19/16

摘要： An outer ring includes an outer ring small-diameter part extending toward one axial side with respect to the outer ring raceway, a radial wall part extending from an axial end portion of the outer ring small-diameter part toward an inner diameter-side, and a folded-back part extending from a radially inner end portion of the radial wall part toward the other axial side. The folded-back part radially overlaps the inner ring small-diameter part with a radial gap therebetween. The radial gap of an inner diameter-side entry formed by an axial end of the folded-back part and the inner peripheral surface of the inner ring small-diameter part is smaller than the radial gap of an inner diameter-side exit formed by an axial end of the inner ring small-diameter part and an outer peripheral surface of the folded-back part.

公开(公告)号：US20220268358A1

公开(公告)日：2022-08-25

申请号：US17632698

申请日：2020-12-11

申请人： NSK LTD.

发明人： Hirotaka KISHIDA ,  Ricardo RODRIGUEZ LOPEZ ,  Seigou URAKAMI ,  Shohei KANEKO ,  Akihiro YAMAMOTO

IPC分类号： F16H63/04 ,  F16H63/30 ,  F16H61/32

摘要： 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.