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公开(公告)号：US20230090157A1
公开(公告)日：2023-03-23
申请号：US17754673
申请日：2020-09-10
Applicant: THE UNIVERSITY OF TOKYO , BRIDGESTONE CORPORATION , NSK Ltd.
Inventor： Hiroshi FUJIMOTO , Osamu SHIMIZU , Keizo AKUTAGAWA , Yasumichi WAKAO , Isao KUWAYAMA , Daisuke GUNJI
Abstract: A wireless power reception system 1 includes: a power reception device 5 including a power reception coil 51 that receives power supplied wirelessly from a power transmission coil 41 of a power transmission device 4 installed in a road surface, at least a portion of the power reception coil 51 being housed in a wheel 3 of a moving body 2; and an onboard device 6 which is installed in the moving body 2 and which is electrically connected to the power reception device 5, wherein the power reception device 5 can transmit received power to the onboard device 6, and the power reception coil 51 has a convex shape pointing downward in a side view as seen from an axial direction of the wheel 3.
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公开(公告)号：US20180313708A1
公开(公告)日：2018-11-01
申请号：US15771313
申请日：2016-10-27
Applicant: NSK LTD.
Inventor： Hiroki HAMADA , Yasuyuki MATSUDA , Masafumi HIKIDA , Hiroshi KAWAHARA , Daisuke GUNJI
CPC classification number: G01L5/0023 , B60B27/0005 , B60B27/0026 , B60B27/0068 , B60B35/02 , F16C19/18 , F16C19/186 , F16C19/522 , F16C41/00 , F16C2326/02 , G01L5/00 , G01P15/18
Abstract: A vehicle wheel supporting rolling bearing unit includes a stationary side bearing ring member, a rotation side bearing ring member, and plural rolling elements. The rotation side bearing ring member is provided with a first acceleration sensor, a second acceleration sensor, and a third acceleration sensor which are fixed on a virtual plane orthogonal to a center axis of the rotation side bearing ring member. The first acceleration sensor and the second acceleration sensor are arranged on a virtual line passing through a rotation center of the rotation side bearing ring member with a same distance from the rotation center while detection directions thereof are directed in a radial direction and are opposite to each other in the radial direction. The third acceleration sensor is arranged such that a detection direction thereof is non-parallel to the detection directions of the first acceleration sensor and the second acceleration sensor.
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公开(公告)号：US20160195442A1
公开(公告)日：2016-07-07
申请号：US14916668
申请日：2014-09-03
Applicant: NSK Ltd.
Inventor： Tomoharu SAITO , Yasuyuki MATSUDA , Daisuke GUNJI , Masafumi HIKIDA , Kazutaka TANAKA , Tohru UEDA , Yuka KANEKO , Tetsu TAKEHARA , Hiroyasu YOSHIOKA
IPC: G01L3/10
CPC classification number: G01L3/104 , G01L3/101 , G01L3/109 , G01L25/003
Abstract: In order to implement a structure capable of improving the resolution of torque measurement while preventing the plastic deformation of a torsion bar (15), an input-side stopper (61) having an uneven shape (gear shape) in the circumferential direction is provided in a portion of an input-side rotating body (55) that includes an input shaft (13) and an input gear (7), and an output-side stopper (63) having an uneven shape (gear shape) in the circumferential direction is provided in a portion of an output-side rotating body (56) that includes an output shaft (14) and an output gear (8). The input-side stopper (61) and the output-side stopper (63) are combined so as to be engaged to be able to transmit torque only when the torsional angle within the elastic range of the torsion bar (15) reaches a predetermined amount.
Abstract translation: 为了实现能够在防止扭杆（15）的塑性变形的同时提高转矩测量的分辨率的结构，在周向上具有不均匀形状（齿轮形状）的输入侧止动器（61）设置在 包括输入轴（13）和输入齿轮（7）的输入侧旋转体（55）的一部分和沿圆周方向具有不平坦形状（齿轮形状）的输出侧止动件（63） 设置在包括输出轴（14）和输出齿轮（8）的输出侧旋转体（56）的一部分中。 输入侧止动器（61）和输出侧止动器（63）被组合以仅在扭杆（15）的弹性范围内的扭转角达到预定量时才能够传递扭矩 。
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公开(公告)号：US20220266702A1
公开(公告)日：2022-08-25
申请号：US17597788
申请日：2020-07-22
Applicant: THE UNIVERSITY OF TOKYO , BRIDGESTONE CORPORATION , NSK Ltd.
Inventor： Hiroshi FUJIMOTO , Takehiro IMURA , Osamu SHIMIZU , Katsuhiro HATA , Keizo AKUTAGAWA , Yasumichi WAKAO , Isao KUWAYAMA , Daisuke GUNJI
Abstract: A wireless power receiving system includes: a power receiving device having a power receiving coil configured to receive electric power supplied wirelessly from a power transmission coil of a power transmission device installed on a road surface, at least part of the power receiving coil being contained in a vehicle wheel; and in-vehicle devices installed in a mobile object, the in-vehicle devices being energizably connected to the power receiving device. The power receiving device transmits the received electric power to the in-vehicle devices.
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公开(公告)号：US20180372769A1
公开(公告)日：2018-12-27
申请号：US15780962
申请日：2016-10-31
Applicant: NSK LTD.
Inventor： Daisuke GUNJI , Hiroshi KAWAHARA , Fumiaki SODA
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 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.
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Patent Agency Ranking
公开(公告)号：US20170008385A1
公开(公告)日：2017-01-12
申请号：US15123731
申请日：2015-02-16
Applicant: THE UNIVERSITY OF TOKYO , NSK Ltd. , TOYO ELECTRIC MFG. CO., LTD.
Inventor： Hiroshi FUJIMOTO , Takehiro IMURA , Gaku YAMAMOTO , Daisuke GUNJI , Motoki SATO
Abstract: An in-wheel motor system can drive an in-wheel motor stably, and also allows power feeding from the road surface, even when transmission and reception coils are misaligned. An in-wheel motor system (1) includes a power transmitter (100) that utilizes a resonance phenomenon using a magnetic field. The power transmitter (100) transmits power (P) wirelessly from the vehicle body to an in-wheel motor (10) mounted in a wheel. The in-wheel motor system (1) may also include a communication interface (110) that communicates between the vehicle body and the wheel, and the communication interface (110) may transmit a control signal (CTL) for driving the in-wheel motor.
Abstract translation: 即使在发送和接收线圈不对齐的情况下，轮内电动机系统可以稳定地驱动轮内电动机，并且还允许从路面供电。 轮式电动机系统（1）包括使用磁场的共振现象的功率发射器（100）。 电力变送器（100）将电力（P）从车身无线地传递到安装在车轮上的轮内电动机（10）。 车轮马达系统（1）还可以包括在车体和车轮之间进行通信的通信接口（110），并且通信接口（110）可以传送用于驱动车轮马达的控制信号（CTL） 。
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公开(公告)号：US20230088378A1
公开(公告)日：2023-03-23
申请号：US17754666
申请日：2020-09-10
Applicant: THE UNIVERSITY OF TOKYO , BRIDGESTONE CORPORATION , NSK Ltd.
Inventor： Hiroshi FUJIMOTO , Osamu SHIMIZU , Keizo AKUTAGAWA , Yasumichi WAKAO , Isao KUWAYAMA , Daisuke GUNJI
IPC: B60L9/00
Abstract: A wireless power transfer system 1 includes a power transmission device 2 and a power reception device 3. The power transmission device 2 is a power transmission device 2 installed in a road 4, is provided with a power transmission coil 21 that transmits power wirelessly, and is configured such that when installed in the road 4, the normal line of a coil plane of the power transmission coil 21 is inclined with respect to the normal line of the road surface of the road 4 in a lateral cross section of the road 4. The power reception device 3 is provided with a power reception coil 31 that receives power wirelessly, and at least a portion of the power reception coil 31 is housed in the wheel 6 of the moving body 5.
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公开(公告)号：US20210364043A1
公开(公告)日：2021-11-25
申请号：US17257154
申请日：2019-07-03
Applicant: NSK LTD.
Inventor： Naohiro HITOMI , Daisuke GUNJI , Hiroyasu KUMAGAI , Ricardo RODRIGUEZ LOPEZ
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.
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公开(公告)号：US20210254661A1
公开(公告)日：2021-08-19
申请号：US17262911
申请日：2019-07-22
Applicant: NSK LTD.
Inventor： Daisuke GUNJI , Hiroyasu KUMAGAI , Naohiro HITOMI , Ricardo RODRIGUEZ LOPEZ
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.
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公开(公告)号：US20190283612A1
公开(公告)日：2019-09-19
申请号：US16334905
申请日：2017-09-15
Applicant: NSK LTD.
Inventor： Ryuho MORITA , Yasuyuki MATSUDA , Mitsuru OIKE , Daisuke GUNJI , Shin YAMAMOTO
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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