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    Propellant force generator
    1.
    发明授权
    Propellant force generator 有权

    公开(公告)号：US11718387B2

    公开(公告)日：2023-08-08

    申请号：US17606791

    申请日：2021-03-17

    Applicant: NSK LTD.

    Inventor： Hiroyasu Kumagai ,  Daisuke Gunji

    IPC: B64C11/44

    CPC classification number: B64C11/44

    Abstract: A propellant force generator is provided having the size in the axial direction of a rotational shaft of a motor reduced while making the pitch angles of rotational blades driven by the motor variable. The propellant force generator includes a propellant-force generating motor adapted to generate a propellant force for rotational blades, a pitch varying motor adapted to generate a rotational motion for changing pitch angles of the rotational blades, a rotation-linear motion converting unit adapted to convert the rotational motion generated by the pitch varying motor into a linear motion, and a linear motion-rotation converting unit adapted to convert the linear motions converted by the rotation-linear motion converting unit into rotational motions. At least a part of the linear motion-rotation converting unit is located within the propellant-force generating motor.

    Rolling bearing unit
    4.
    发明授权
    Rolling bearing unit 有权

    公开(公告)号：US11421736B2

    公开(公告)日：2022-08-23

    申请号：US17257154

    申请日：2019-07-03

    Applicant: NSK LTD.

    Inventor： Naohiro Hitomi ,  Daisuke Gunji ,  Hiroyasu Kumagai ,  Ricardo Rodriguez Lopez

    IPC: F16C41/00 ,  F16C33/72 ,  B60B27/00

    Abstract: A rolling bearing unit includes: an inner ring member having a recess on a first side in an axial direction, the recess being recessed toward a second side in the axial direction; an outer ring member disposed on the outer periphery side of the inner ring member; a rolling body disposed between the inner ring member and the outer ring member and rotatably supporting the inner ring member with respect to the outer ring member; a transmitter capable of transmitting at least one of electric power or a signal, at least a part of the transmitter being accommodated inside the recess of the inner ring member; and a covering member that is supported by the first side of the outer ring member in the axial direction, covers the first side of the inner ring member in the axial direction, and fixes the transmitter.

    Rolling bearing unit for wheel support
    5.
    发明授权
    Rolling bearing unit for wheel support 有权

    公开(公告)号：US10444253B2

    公开(公告)日：2019-10-15

    申请号：US15780962

    申请日：2016-10-31

    Applicant: NSK LTD.

    Inventor： Daisuke Gunji ,  Hiroshi Kawahara ,  Fumiaki Soda

    IPC: G01P3/44 ,  F16C41/00 ,  F16C19/18 ,  B60C23/04 ,  B60B35/02 ,  B60B27/00 ,  H02K21/22 ,  H02K7/18

    Abstract: A charger incorporated in a vehicle wheel supporting rolling bearing unit detects an output voltage of an electric generator and calculates a rotation speed of a hub. When a rotation speed of the hub is in a low speed state where a sensor and a wireless communication device are operated by electric power supplied 5 by a battery, a frequency of wireless communication performed between the wireless communication device and a calculator disposed on a vehicle body side is changed according to the rotation speed of the hub or a traveling speed of a vehicle.

    ROTATION TRANSMISSION DEVICE
    6.
    发明申请
    ROTATION TRANSMISSION DEVICE 审中-公开

    公开(公告)号：US20170227111A1

    公开(公告)日：2017-08-10

    申请号：US15436996

    申请日：2017-02-20

    Applicant: NSK LTD.

    Inventor： Yasuyuki MATSUDA ,  Daisuke Gunji ,  Masafumi Hikida ,  Kazutaka Tanaka ,  Tooru Ueda ,  Tetsu Takehara ,  Tomoharu Saito ,  Hiroyasu Yoshioka ,  Yuka Kaneko

    IPC: F16H57/00 ,  F16C19/36 ,  G01L3/10 ,  F16C33/58 ,  F16C33/66 ,  F16F15/121 ,  F16C19/46

    CPC classification number: F16H57/0037 ,  F16C19/364 ,  F16C19/463 ,  F16C33/581 ,  F16C33/6677 ,  F16C2361/65 ,  F16F15/1216 ,  F16H2059/147 ,  G01L3/101 ,  G01L3/104 ,  G01L3/105 ,  G01L3/109

    Abstract: A rotation transmission device having a high torque measurement resolution is provided. The rotation transmission device is provided with: a rotary-shaft unit (6) having a first and second rotary shaft (13, 14) combined so as to be coaxial and such that the end sections thereof can rotate relative to each other and a torsion bar (15) that is provided on the inner-diameter side of the first and second rotary shafts so as to be coaxial therewith, has one end section connected to the first rotary shaft (13), and has the other end section connected to the second rotary shaft (14); a first gear (7) fastened to the outer peripheral surface of the first rotary shaft (13); a second gear (8) fastened to the outer peripheral surface of the second rotary shaft (14); a coupling shaft (9) provided on the inner-diameter side of the torsion bar (15) so as to be coaxial therewith, having one end section connected to one rotary shaft (13), and having the other end section protruding from an end of the torsion bar (15) in the axial direction; a first encoder disposed and fixed on the other end of the coupling shaft (9) so as to be coaxial with the first rotary shaft (13) and having a first detected section (39); a second encoder fastened on the other end of the second rotary shaft (14) so as to be close to the first encoder and having a second detected section (40); and a sensor unit having at least one sensor (42a, 42b) that faces the first and second detected sections (39, 40).

    Rolling bearing unit
    7.
    发明授权
    Rolling bearing unit 有权

    公开(公告)号：US11365764B2

    公开(公告)日：2022-06-21

    申请号：US17262911

    申请日：2019-07-22

    Applicant: NSK LTD.

    Inventor： Daisuke Gunji ,  Hiroyasu Kumagai ,  Naohiro Hitomi ,  Ricardo Rodriguez Lopez

    IPC: F16C41/00 ,  B60B27/00 ,  F16C33/72

    Abstract: A rolling bearing unit includes: an inner ring member having a recess on a first side in an axial direction along a rotation axis, which is recessed toward a second side in the axial direction; an outer ring member on an outer peripheral side of the inner ring member; a rolling body between the inner ring member and the outer ring member; a non-contact transmitter using electric field coupling capable of transmitting at least one of an electric power or a signal and including a stationary-side transmission part including a stationary-side electrode and a rotary-side transmission part including a rotary-side electrode facing the stationary-side electrode; and a covering member supported by the first side of the outer ring member in the axial direction, covering the first side of the inner ring member in the axial direction, and fixing the stationary-side transmission part to the first side in the axial direction.

    Electric vehicle drive device
    8.
    发明授权
    Electric vehicle drive device 有权

    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.

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