Patents by Inventor Yutaka Arimura
Yutaka Arimura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 11142064Abstract: In an electric vehicle including a motor shaft connected to a drive motor, a counter shaft coupled with the motor shaft, a drive shaft coupled with the counter shaft, a drive wheel coupled with the drive shaft, a plurality of bearings configured to support the counter shaft, and a plurality of gears configured to rotate integrally with the counter shaft, a torque sensor is disposed in a region in which a slope of a bending moment occurring on the counter shaft is minimum at a time that the drive motor is driven.Type: GrantFiled: March 27, 2019Date of Patent: October 12, 2021Assignee: Honda Motor Co., Ltd.Inventors: Tatsuya Ohzu, Yutaka Arimura, Daisuke Hoshino, Shingo Soma, Yosuke Tanaka
-
Patent number: 11131592Abstract: A motor unit includes a drive motor having an output shaft with a hollow portion, and a torque sensor arranged inside the hollow portion. The output shaft is formed by a magnetic body. A vehicle can include the motor unit. The drive motor can be a traction motor that generates traction drive force of the vehicle, for example.Type: GrantFiled: March 21, 2019Date of Patent: September 28, 2021Assignee: Honda Motor Co., Ltd.Inventors: Yosuke Tanaka, Yutaka Arimura, Daisuke Hoshino, Tatsuya Ohzu, Shingo Soma
-
Patent number: 11097722Abstract: An electric vehicle includes a second rotating electric machine; a first transmission path configured to transmit force generated by the second rotating electric machine to a wheel; a first clutch that is arranged in the first transmission path and configured to switch between a connected state and a disconnected state between the second rotating electric machine and the wheel; and an ECU configured to control the second rotating electric machine and the first clutch. In the electric vehicle, a torque sensor is arranged between the first clutch and the wheel in the first transmission path.Type: GrantFiled: February 22, 2019Date of Patent: August 24, 2021Assignee: Honda Motor Co., Ltd.Inventors: Daisuke Hoshino, Yutaka Arimura, Tatsuya Ohzu, Shingo Soma, Yosuke Tanaka
-
Patent number: 11092503Abstract: A sensor unit includes a shaft having a hollow portion and a torque sensor that is arranged inside the hollow portion and detects torsional torque acting on the shaft from inside the shaft. A motor unit can include the sensor unit and a drive motor. A vehicle can include the motor unit. A drive motor can be a traction motor that generates a traction drive force for the vehicle, for example.Type: GrantFiled: March 21, 2019Date of Patent: August 17, 2021Assignee: Honda Motor Co., Ltd.Inventors: Yutaka Arimura, Daisuke Hoshino, Tatsuya Ohzu, Shingo Soma, Yosuke Tanaka
-
Patent number: 11081940Abstract: A drive motor includes a torque sensor on an outer circumference of a shaft. The drive motor includes a rotor, a rotor shaft arranged inside the rotor, and an output shaft that is joined to the rotor shaft by a joint having a loose element. In the drive motor, the output shaft outputs rotational force of the rotor shaft to the output side. The torque sensor is arranged on an upstream side of the joint in a range not overlapping with the joint.Type: GrantFiled: February 26, 2019Date of Patent: August 3, 2021Assignee: Honda Motor Co., Ltd.Inventors: Shingo Soma, Yutaka Arimura, Daisuke Hoshino, Tatsuya Ohzu, Yosuke Tanaka
-
Patent number: 10889289Abstract: A vehicle is equipped with a torque sensor configured to detect a torque, and which is disposed on a second transmission path connecting a first rotary electric machine and a first branch point on a first transmission path. When a first switching device is placed in a connected state and a vehicle wheel is driven by an internal combustion engine, a control device causes an inverted phase torque, which is opposite in phase to a detected torque detected by the torque sensor, to be generated in the first rotary electric machine.Type: GrantFiled: February 22, 2019Date of Patent: January 12, 2021Assignee: Honda Motor Co., Ltd.Inventors: Daisuke Hoshino, Yutaka Arimura, Tatsuya Ohzu, Shingo Soma, Yosuke Tanaka
-
Patent number: 10797568Abstract: A motor unit including a drive motor that includes an output shaft having a hollow portion; a torque sensor arranged within the hollow portion; and a cooling mechanism. The cooling mechanism has one end of a coolant path arranged inside the hollow portion and cools the drive motor and the torque sensor. A vehicle can include the motor unit. The drive motor can act as a traction motor generating traction drive force of the vehicle.Type: GrantFiled: March 21, 2019Date of Patent: October 6, 2020Assignee: Honda Motor Co., Ltd.Inventors: Tatsuya Ohzu, Yutaka Arimura, Daisuke Hoshino, Shingo Soma, Yosuke Tanaka
-
Patent number: 10730508Abstract: A vehicle is equipped with a torque sensor configured to detect a torque, and which is disposed between an internal combustion engine and a first switching device on a first transmission path. When the first switching device is switched from a disconnected state to a connected state, a control device calculates a torque difference between a target torque of the internal combustion engine corresponding to a specified point on the first transmission path, and a detected torque or the like detected by the torque sensor. Further, the control device generates in a first rotary electric machine or a second rotary electric machine a compensation torque that compensates for the torque difference.Type: GrantFiled: February 21, 2019Date of Patent: August 4, 2020Assignee: Honda Motor Co., Ltd.Inventors: Daisuke Hoshino, Yutaka Arimura, Tatsuya Ohzu, Shingo Soma, Yosuke Tanaka
-
Patent number: 10673308Abstract: A drive motor in which a torque sensor is arranged on an outer circumference of a shaft, includes a rotor, a rotor shaft arranged inside the rotor, and an output shaft that is joined to the rotor shaft by a spline joint and outputs rotational force of the rotor shaft to the output side. The torque sensor is arranged on an output side of the spline joint in a range not overlapping with the spline joint.Type: GrantFiled: February 26, 2019Date of Patent: June 2, 2020Assignee: Honda Motor Co., Ltd.Inventors: Yutaka Arimura, Daisuke Hoshino, Tatsuya Ohzu, Shingo Soma, Yosuke Tanaka
-
Patent number: 10551256Abstract: A magnetostrictive torque sensor is provided that is capable of maintaining high detection accuracy, even when an excessive torque acts on a rotary shaft. The magnetostrictive torque sensor includes a magnetostrictive film 71 that is arranged on a second steering shaft 23, or a rotary shaft, having a substantially columnar shape so as to surround the second steering shaft 23 around its axis, and detects a rotational torque about the axis acting on the second steering shaft 23 based on a change in a magnetic property of the magnetostrictive film 71. Compressive stress remains on an outer circumferential surface of a sensor region 77 of the second steering shaft 23 around which the magnetostrictive film 71 is arranged. A plated layer of the magnetostrictive film 71 is arranged on the outer circumferential surface of the sensor region 77 in which compressive stress remains.Type: GrantFiled: September 21, 2017Date of Patent: February 4, 2020Assignee: HONDA MOTOR CO., LTD.Inventors: Yutaka Arimura, Yosuke Tanaka
-
Publication number: 20190299776Abstract: In an electric vehicle including a motor shaft connected to a drive motor, a counter shaft coupled with the motor shaft, a drive shaft coupled with the counter shaft, a drive wheel coupled with the drive shaft, a plurality of bearings configured to support the counter shaft, and a plurality of gears configured to rotate integrally with the counter shaft, a torque sensor is disposed in a region in which a slope of a bending moment occurring on the counter shaft is minimum at a time that the drive motor is driven.Type: ApplicationFiled: March 27, 2019Publication date: October 3, 2019Inventors: Tatsuya OHZU, Yutaka ARIMURA, Daisuke HOSHINO, Shingo SOMA, Yosuke TANAKA
-
Publication number: 20190296616Abstract: A motor unit including a drive motor that includes an output shaft having a hollow portion; a torque sensor arranged within the hollow portion; and a cooling mechanism. The cooling mechanism has one end of a coolant path arranged inside the hollow portion and cools the drive motor and the torque sensor. A vehicle can include the motor unit. The drive motor can act as a traction motor generating traction drive force of the vehicle.Type: ApplicationFiled: March 21, 2019Publication date: September 26, 2019Inventors: Tatsuya OHZU, Yutaka ARIMURA, Daisuke HOSHINO, Shingo SOMA, Yosuke TANAKA
-
Publication number: 20190293502Abstract: A sensor unit includes a shaft having a hollow portion and a torque sensor that is arranged inside the hollow portion and detects torsional torque acting on the shaft from inside the shaft. A motor unit can include the sensor unit and a drive motor. A vehicle can include the motor unit. A drive motor can be a traction motor that generates a traction drive force for the vehicle, for example.Type: ApplicationFiled: March 21, 2019Publication date: September 26, 2019Inventors: Yutaka ARIMURA, Daisuke HOSHINO, Tatsuya OHZU, Shingo SOMA, Yosuke TANAKA
-
Publication number: 20190293501Abstract: A motor unit includes a drive motor having an output shaft with a hollow portion, and a torque sensor arranged inside the hollow portion. The output shaft is formed by a magnetic body. A vehicle can include the motor unit. The drive motor can be a traction motor that generates traction drive force of the vehicle, for example.Type: ApplicationFiled: March 21, 2019Publication date: September 26, 2019Inventors: Yosuke TANAKA, Yutaka ARIMURA, Daisuke HOSHINO, Tatsuya OHZU, Shingo SOMA
-
Publication number: 20190263387Abstract: An electric vehicle includes a second rotating electric machine; a first transmission path configured to transmit force generated by the second rotating electric machine to a wheel; a first clutch that is arranged in the first transmission path and configured to switch between a connected state and a disconnected state between the second rotating electric machine and the wheel; and an ECU configured to control the second rotating electric machine and the first clutch. In the electric vehicle, a torque sensor is arranged between the first clutch and the wheel in the first transmission path.Type: ApplicationFiled: February 22, 2019Publication date: August 29, 2019Inventors: Daisuke HOSHINO, Yutaka ARIMURA, Tatsuya OHZU, Shingo SOMA, Yosuke TANAKA
-
Publication number: 20190267869Abstract: A drive motor includes a torque sensor on an outer circumference of a shaft. The drive motor includes a rotor, a rotor shaft arranged inside the rotor, and an output shaft that is joined to the rotor shaft by a joint having a loose element. In the drive motor, the output shaft outputs rotational force of the rotor shaft to the output side. The torque sensor is arranged on an upstream side of the joint in a range not overlapping with the joint.Type: ApplicationFiled: February 26, 2019Publication date: August 29, 2019Inventors: Shingo SOMA, Yutaka ARIMURA, Daisuke HOSHINO, Tatsuya OHZU, Yosuke TANAKA
-
Publication number: 20190267870Abstract: A drive motor in which a torque sensor is arranged on an outer circumference of a shaft, includes a rotor, a rotor shaft arranged inside the rotor, and an output shaft that is joined to the rotor shaft by a spline joint and outputs rotational force of the rotor shaft to the output side. The torque sensor is arranged on an output side of the spline joint in a range not overlapping with the spline joint.Type: ApplicationFiled: February 26, 2019Publication date: August 29, 2019Inventors: Yutaka ARIMURA, Daisuke HOSHINO, Tatsuya OHZU, Shingo SOMA, Yosuke TANAKA
-
Publication number: 20190263381Abstract: A vehicle is equipped with a torque sensor configured to detect a torque, and which is disposed between an internal combustion engine and a first switching device on a first transmission path. When the first switching device is switched from a disconnected state to a connected state, a control device calculates a torque difference between a target torque of the internal combustion engine corresponding to a specified point on the first transmission path, and a detected torque or the like detected by the torque sensor. Further, the control device generates in a first rotary electric machine or a second rotary electric machine a compensation torque that compensates for the torque difference.Type: ApplicationFiled: February 21, 2019Publication date: August 29, 2019Inventors: Daisuke HOSHINO, Yutaka ARIMURA, Tatsuya OHZU, Shingo SOMA, Yosuke TANAKA
-
Publication number: 20190263388Abstract: A vehicle is equipped with a torque sensor configured to detect a torque, and which is disposed on a second transmission path connecting a first rotary electric machine and a first branch point on a first transmission path. When a first switching device is placed in a connected state and a vehicle wheel is driven by an internal combustion engine, a control device causes an inverted phase torque, which is opposite in phase to a detected torque detected by the torque sensor, to be generated in the first rotary electric machine.Type: ApplicationFiled: February 22, 2019Publication date: August 29, 2019Inventors: Daisuke HOSHINO, Yutaka ARIMURA, Tatsuya OHZU, Shingo SOMA, Yosuke TANAKA
-
Publication number: 20180087982Abstract: A magnetostrictive torque sensor is provided that is capable of maintaining high detection accuracy, even when an excessive torque acts on a rotary shaft. The magnetostrictive torque sensor includes a magnetostrictive film 71 that is arranged on a second steering shaft 23, or a rotary shaft, having a substantially columnar shape so as to surround the second steering shaft 23 around its axis, and detects a rotational torque about the axis acting on the second steering shaft 23 based on a change in a magnetic property of the magnetostrictive film 71. Compressive stress remains on an outer circumferential surface of a sensor region 77 of the second steering shaft 23 around which the magnetostrictive film 71 is arranged. A plated layer of the magnetostrictive film 71 is arranged on the outer circumferential surface of the sensor region 77 in which compressive stress remains.Type: ApplicationFiled: September 21, 2017Publication date: March 29, 2018Inventors: Yutaka Arimura, Yosuke Tanaka