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公开(公告)号：US11572940B2
公开(公告)日：2023-02-07
申请号：US17551262
申请日：2021-12-15
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hiroshi Isono
Abstract: A vehicular differential device includes a differential rotation mechanism, and a torque input member that receives drive torque, the drive torque is distributed and transmitted to a first drive shaft and a second drive shaft. The differential rotation mechanism includes an input gear that rotates as a unit with the torque input member, an output gear that rotates as a unit with the first drive shaft, a first gear and a second gear that rotate as a unit, and a carrier that supports the first gear and the second gear, the carrier being configured to rotate as a unit with the second drive shaft. The gear ratio between the input gear and the first gear is different from that between the output gear and the second gear. During differential rotation, the first drive shaft and the second drive shaft are rotated in opposite directions.
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公开(公告)号：US11181177B2
公开(公告)日：2021-11-23
申请号：US16996003
申请日：2020-08-18
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hiroshi Isono
Abstract: A downsized torque vectoring device that is easily to be mounted on an automobile. The torque vectoring device comprises: a differential mechanism that allows a first driveshaft and second driveshaft to rotate at different speeds; an actuator that applies a control torque to the differential mechanism to rotate the first driveshaft and the second driveshaft at different speeds; and a reversing mechanism that allows the first driveshaft and the second driveshaft to rotate in opposite directions. A gear ratio of a first gear train and a gear ratio of the second gear train are different from each other.
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公开(公告)号：US10787167B2
公开(公告)日：2020-09-29
申请号：US15902262
申请日：2018-02-22
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Takanobu Nasu , Hiroshi Isono , Hidekazu Sasaki
IPC: B60K1/00 , B60K1/02 , B60K17/354 , B60K17/356 , B60K6/26 , B60K7/00 , B60L15/20 , B60W10/08 , B60W10/16 , B60W30/045
Abstract: A drive force control system configured to achieve a yaw rate required by a driver. A first target yaw rate is calculated based on a steering angle, and a second target yaw rate is calculated based on a steering torque. A first target torque of a right wheel and a second target torque of a left wheel are calculated based on a first difference between the first target yaw rate and an actual yaw rate. the first target torque is corrected based on the second target yaw rate and the actual yaw rate to obtain a third target torque, and the second target torque is corrected based on the second target yaw rate and the actual yaw rate to obtain a fourth target torque. A controller transmit signals to the drive unit to achieve the third target torque and to achieve the fourth target torque.
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公开(公告)号：US10696325B2
公开(公告)日：2020-06-30
申请号：US15902348
申请日：2018-02-22
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Takanobu Nasu , Hiroshi Isono , Hidekazu Sasaki
Abstract: A drive force control system to increase a yaw rate greater than the yaw rate achieved by rotating a steering wheel to a maximum angle. A target yaw rate is calculated based on a steering angle of the steering wheel. A first predetermined torque and a second predetermined torque are calculated based on a difference between the target yaw rate and an actual yaw rate. When the steering angle of the steering wheel exceeds a first predetermined angle, a first correction torque to correct the first predetermined torque and a second correction torque to correct the second predetermined torque are calculated in accordance with the steering torque.
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公开(公告)号：US10571949B2
公开(公告)日：2020-02-25
申请号：US15935645
申请日：2018-03-26
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hiroshi Isono
Abstract: A brake operating device to improve a brake feeling by a simple structure without a hydraulic source or an electric power source. A first reaction force establishing mechanism as an elastic member establishes the reaction force against the pedal force applied to the brake pedal. A second reaction force establishing mechanism increases the reaction force when depressing the brake pedal. The first reaction force establishing mechanism and the second reaction force establishing mechanism are arranged coaxially in series.
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Patent Agency Ranking
公开(公告)号：US10508725B2
公开(公告)日：2019-12-17
申请号：US15964757
申请日：2018-04-27
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hiroshi Isono
Abstract: A geared transmission unit in which flexibility in arrangements of shafts and members coupled to the shafts is enhanced. The geared transmission unit comprises: a pair of pinion gears having different teeth numbers that rotate integrally; a carrier that rotates while supporting the pinion gears in a rotatable manner; a fixed gear meshed with a first pinion gear; a first transmission gear arranged on an inner circumferential side of the carrier while being meshed with a second pinion gear; an external gear formed on an outer circumferential face of the carrier; and second transmission gears respectively meshing with the external gear.
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公开(公告)号：US10442291B2
公开(公告)日：2019-10-15
申请号：US15581720
申请日：2017-04-28
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , ALCHEMICA CORPORATION
Inventor： Hiroshi Isono , Nobuyoshi Sugitani , Aizoh Kubo
IPC: B60K17/04 , B60K1/02 , B60K23/04 , F16D55/226 , F16D65/18 , F16H1/28 , F16H48/36 , B60K1/00 , F16D121/20
Abstract: A drive unit a drive unit which can prevent an occurrence of an unintentional relative rotation between the right and the left wheels is provided. The drive unit comprises: a first motor connected to the first driveshaft and a second motor connected to the second drive shaft; a first torque transmitting route between the first motor and the first drive shaft; a second torque transmitting route between the second motor and the second drive shaft; a first rotary member arranged in the first torque transmitting route; a second rotary member arranged in the second torque transmitting route; and a restriction device that restricts a differential rotation between the first rotary member and the second rotary member.
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公开(公告)号：US10384535B2
公开(公告)日：2019-08-20
申请号：US15581082
申请日：2017-04-28
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , ALCHEMICA CORPORATION
Inventor： Hiroshi Isono , Nobuyoshi Sugitani , Aizoh Kubo
IPC: B60K1/02 , B60K17/04 , F16D65/18 , F16H1/28 , B60K7/00 , B60K17/02 , B60K17/14 , F16D55/226 , F16D121/20
Abstract: A drive unit having a downsized brake device for applying a braking force to a drive wheel is provided. The drive unit comprises: a first brake device that applies braking torque to a first rotary member situated closer to a first motor than a first speed reducing device in a first torque transmitting route between the first motor and a first drive shaft; and a second brake device that applies braking torque to a second rotary member situated closer to a second motor than a second speed reducing device in a second torque transmitting route between the second motor and a second drive shaft.
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公开(公告)号：US10221931B2
公开(公告)日：2019-03-05
申请号：US15583251
申请日：2017-05-01
Applicant: Toyota Jidosha Kabushiki Kaisha
Inventor： Takanobu Nasu , Junya Oota , Hiroshi Isono
Abstract: A driving force control system for a vehicle is provided to control a torque vectoring device is provided. A controller is configured to bring the torque vectoring device into a preparatory state in which the differential torque and the differential limit torque are equalized to each other when shifting the operating mode between the differential mode and the differential limit mode, and to shift the operating mode of the torque vectoring device by gradually reducing a difference between the differential torque and the differential limit torque.
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公开(公告)号：US10203029B2
公开(公告)日：2019-02-12
申请号：US15437493
申请日：2017-02-21
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , ALCHEMICA CORPORATION
Inventor： Hiroshi Isono , Aizoh Kubo
Abstract: A motor drive unit having an electromagnetic brake serving as an inboard brake that may also be used as a parking brake is provided. In the motor drive unit, output torque of a drive motor is distributed to a first driveshaft and a second driveshaft. The motor drive unit comprises: an electromagnetic brake device that stops rotation of an output shaft by contacting a brake stator to a brake rotor; a brake motor that generates torque when energized; and an engagement force generating device that generates an engagement force to engage the brake member with the rotary member when the output torque of the brake motor is applied thereto, and that maintains the engagement between the brake member and the rotary member when current supply to the electromagnetic brake device and the brake motor is stopped.
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