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    DETECTING CIRCUIT AND DETECTING METHOD FOR MAGNETOSTRICTIVE TORQUE SENSOR
    2.
    发明公开
    DETECTING CIRCUIT AND DETECTING METHOD FOR MAGNETOSTRICTIVE TORQUE SENSOR 审中-公开

    公开(公告)号：EP4116687A1

    公开(公告)日：2023-01-11

    申请号：EP21764549.8

    申请日：2021-03-02

    申请人： NSK Ltd.

    发明人： SUGIYAMA, Yuta ,  NAKAMURA, Teruyuki ,  ONO, Junji ,  FUKUDA, Kota

    IPC分类号： G01L3/10

    摘要： A detecting circuit 10 of a magnetostrictive torque sensor for detecting torque imparted to a magnetostrictive material 2 which has been subjected to shot peening is provided with a detecting coil 11 provided around the magnetostrictive material 2, and a drive unit 12 for performing AC excitation of the detecting coil 11, and is configured to detect the torque imparted to the magnetostrictive material 2 on the basis of a change in the inductance of the detecting coil 11, wherein the drive unit 12 performs AC excitation using a frequency at which the skin effect thickness is at most equal to the effective depth of the shot peening.

    METHOD FOR MANUFACTURING MAGNETOSTRICTIVE TORQUE SENSOR SHAFT
    3.
    发明公开
    METHOD FOR MANUFACTURING MAGNETOSTRICTIVE TORQUE SENSOR SHAFT 审中-公开

    公开(公告)号：EP3901601A1

    公开(公告)日：2021-10-27

    申请号：EP19898666.3

    申请日：2019-12-11

    申请人： NSK Ltd.

    发明人： FUKUDA, Kota ,  ONO, Junji ,  NAKAMURA, Teruyuki ,  SUGIYAMA, Yuta

    IPC分类号： G01L3/10

    摘要： This method for manufacturing a magnetostrictive torque sensor shaft 100 to which a sensor portion 2 of a magnetostrictive torque sensor 1 is to be attached includes: a heat treatment step of subjecting an iron-based shaft member to a carburizing, quenching, and tempering process; a shot peening step of performing shot peening using a steel shot media having a Vickers hardness at least equal to 1100 and at most equal to 1300 , at least in a position on the shaft member, after the heat treatment step, to which the sensor portion 2 is to be attached; and a surface polishing step of subjecting the shaft member after the shot peening to surface polishing.

    MAGNETOSTRICTIVE TORQUE SENSOR AND METHOD FOR MANUFACTURING MAGNETOSTRICTIVE TORQUE SENSOR
    4.
    发明公开
    MAGNETOSTRICTIVE TORQUE SENSOR AND METHOD FOR MANUFACTURING MAGNETOSTRICTIVE TORQUE SENSOR 审中-实审

    公开(公告)号：EP4425135A1

    公开(公告)日：2024-09-04

    申请号：EP22886629.9

    申请日：2022-10-05

    申请人： NSK Ltd.

    发明人： JIN, Yiming ,  FUJIMORI, Akitoshi ,  KUBO, Yoshinori ,  ONO, Junji ,  FUKUDA, Kota ,  ODERA, Takahiro

    IPC分类号： G01L3/10

    CPC分类号： G01L3/10

    摘要： Provided are: a magnetostrictive torque sensor with which productivity can be improved more than a case where the magnetostrictive torque sensor is formed by adhering and fixing a flexible substrate having a plurality of coils formed thereon to a hollow cylindrical magnetic ring; and a method for manufacturing the same. This magnetostrictive torque sensor 1, which detects torque applied to a rotating shaft 8 having magnetostrictive effects, comprises: a support member 2 having an inner cylindrical portion 21 into which the rotating shaft 8 is inserted; a flexible substrate 5 that is disposed on the outer periphery of the inner cylindrical portion 21 and on which a plurality of coils 511-519, 521-529, 531-539, 541-549 are formed by wiring patterns; and a heat-shrinkable tube 6 that fastens the flexible substrate 5 toward an outer peripheral surface 21b of the inner cylindrical portion 21. When manufacturing the magnetostrictive torque sensor 1, the heat-shrinkable tube 6 is disposed on the outer periphery of the flexible substrate 5, and the heat-shrinkable tube 6 is shrunk by heating to fasten the flexible substrate 5 to the inner cylindrical portion 21.

    TORQUE MEASUREMENT DEVICE
    5.
    发明公开
    TORQUE MEASUREMENT DEVICE 审中-公开

    公开(公告)号：EP4215890A1

    公开(公告)日：2023-07-26

    申请号：EP21868983.4

    申请日：2021-07-01

    申请人： NSK Ltd.

    发明人： ODERA, Takahiro ,  ONO, Junji ,  KOBAYASHI, Masahiro ,  FUKUDA, Kota

    IPC分类号： G01L3/10

    摘要： [Object] To provide a torque measuring device having a structure that is capable of preventing shifting of the position in the direction of rotation and the radial direction of a magnetostrictive sensor with respect to a fixed member that does not rotate even during operation.
    [Solution] A torque measuring device 1 includes a magnetostrictive sensor 4 and a fixed member 9. The magnetostrictive sensor 4 has a ring-shaped holder 5 arranged around a magnetostrictively affected section 3 of a rotating shaft 2, a detecting section 6 that is embedded in the holder 5 and that changes a voltage according to a change in magnetic permeability of the magnetostrictively affected section 3; and a sensor-side engaging section 8. The fixed member 9 has a fixed-side engaging section 10 and does not rotate even during operation. One of the sensor-side engaging portion 8 and the fixed-side engaging section 10 is a convex section and the other is a concave section. With the sensor-side engaging section 8 and the fixed-side engaging section 10 engaged with a concave-convex engagement, shifting of the position of the magnetostrictive sensor 4 in the direction of rotation and the radial direction with respect to the substrate 9 is prevented.

    METHOD OF MANUFACTURING MAGNETOSTRICTIVE TORQUE SENSOR SHAFT
    6.
    发明公开
    METHOD OF MANUFACTURING MAGNETOSTRICTIVE TORQUE SENSOR SHAFT 审中-公开

    公开(公告)号：EP3901602A1

    公开(公告)日：2021-10-27

    申请号：EP19900001.9

    申请日：2019-12-11

    申请人： NSK Ltd.

    发明人： FUKUDA, Kota ,  ONO, Junji ,  NAKAMURA, Teruyuki ,  SUGIYAMA, Yuta

    IPC分类号： G01L3/10

    摘要： Provided is a method of manufacturing a magnetostrictive torque sensor shaft 100 to which a sensor portion 2 of a magnetostrictive torque sensor 1 is mounted. The method comprises a heat treatment step for subjecting an iron-based shaft material to a carburizing quenching/tempering process, and a shot-peening step for performing shot-peening at least at the location of the shaft material after the heat treatment step at which the sensor portion 2 is to be mounted, using a shot material having a Vickers hardness of 1100 to 1300 inclusive and not containing boron.

    SINGLE-CAVITY TOROIDAL CONTINUOUSLY VARIABLE TRANSMISSION
    7.
    发明公开
    SINGLE-CAVITY TOROIDAL CONTINUOUSLY VARIABLE TRANSMISSION 审中-公开
    单腔旋转无级变速器

    公开(公告)号：EP3056764A1

    公开(公告)日：2016-08-17

    申请号：EP14852059.6

    申请日：2014-04-02

    申请人： NSK Ltd.

    发明人： KISHIDA, Hirotaka ,  ONO, Junji

    IPC分类号： F16H15/38

    CPC分类号： F16H15/38 ,  F16H61/6649

    摘要： 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.

    摘要翻译： 本发明提供一种能够抑制陀螺打滑，并且能够缓和轴承损失，延长使用寿命的单腔环型无级变速器。 在单腔环型无级变速器中，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），并且输出侧轴承46的球直径小于 因此，能够抑制作用于负荷小的增速侧的输出侧轴承的球的离心力。 因此，可以抑制陀螺仪打滑，并且可以实现轴承损失的减轻。 另外，在输出侧轴承46的槽R比小于输入侧轴承43的槽R比的情况下，即使输出侧轴承43的节圆直径（PCD）和滚珠直径 46比输入侧轴承43小。

    RESIN RETAINER AND ROLLING BEARING
    9.
    发明公开
    RESIN RETAINER AND ROLLING BEARING 审中-公开
    HARZBEHÄLTERUNDWÄLZLAGER

    公开(公告)号：EP1953400A1

    公开(公告)日：2008-08-06

    申请号：EP06832983.8

    申请日：2006-11-20

    申请人： NSK Ltd.

    发明人： YAMADA, Takiyoshi ,  UCHIYAMA, Takahiko ,  ISO, Kenichi ,  ONO, Junji ,  HARUNAGA, Masahiro ,  YUKAWA, Kinji ,  YASUDA, Makoto ,  ZHAN, Jianjun ,  AIHARA, Nariaki

    IPC分类号： F16C33/41 ,  F16C19/06 ,  F16C33/44

    CPC分类号： F16C33/418 ,  F16C19/06 ,  F16C19/08 ,  F16C19/163 ,  F16C33/3812 ,  F16C33/3825 ,  F16C33/3831 ,  F16C33/3875 ,  F16C33/3887 ,  F16C33/416 ,  F16C33/6614 ,  F16C2208/04 ,  F16C2208/52 ,  F16C2208/60 ,  F16C2220/04 ,  F16C2240/06 ,  F16C2240/08 ,  F16C2240/60

    摘要： A resin snap cage 4 comprises a resin-made circular main part 10, a plurality of pockets 11 provided in one axial end face of the circular main part 10, and a circular reinforcing member 12 installed concentrically at the other end face in an axial direction of the circular main part 10. While this reinforcing member 12 is circular along the circular main part 10, a sectional shape in a plane parallel to an axial direction is a rectangle. The reinforcing member 12 is embedded in a recessed portion formed at the other end face in an axial direction of the circular main part 10 to be integrated, an outside diameter surface 12a, an inside diameter surface 12b, and a pocket-side surface 12c of the reinforcing member 12 are covered with the circular main part 10, and a surface 12d thereof opposite to the pocket side is exposed. This resin snap cage 4 is produced by insert molding where the reinforcing member 12 is made as an insert, and the circular main part 10 and the reinforcing member 12 are integrated at the time of the insert molding.

    摘要翻译： 树脂卡扣保持架4包括树脂制的圆形主体部件10，设置在圆形主体部件10的一个轴向端面上的多个凹部11以及同轴地设置在轴向另一端面上的圆形加强部件12 虽然该加强构件12沿着圆形主要部分10是圆形的，但是在与轴向平行的平面中的截面形状是矩形。 加强构件12嵌入形成在圆形主体10的轴向另一端面上的凹部中，以使其一体化，外径表面12a，内径表面12b和袋侧表面12c 加强构件12被圆形主体10覆盖，并且与袋侧相对的表面12d暴露。 该树脂卡扣保持架4通过嵌入成型制造，其中加强构件12制成为插入件，并且在插入成型时，圆形主体部分10和加强件12一体化。