Patents Assigned to JATCO Ltd
  • Publication number: 20230313877
    Abstract: A power transmission device includes a motor, a gear mechanism connected downstream of the motor; and a pump that sucks oil through a pump inlet. A shortest distance between an open end of the pump inlet and a surface of a stator of the motor is shorter than a shortest distance between the open end of the pump inlet and a surface of the gear mechanism.
    Type: Application
    Filed: September 8, 2021
    Publication date: October 5, 2023
    Applicant: JATCO Ltd
    Inventor: Toshikazu OSHIDARI
  • Publication number: 20230304571
    Abstract: A power transmission device, includes a motor; a gear mechanism connected downstream of the motor; a drive shaft connected downstream of the gear mechanism and disposed passing through an inner periphery of the motor; a pump that sucks oil through a pump inlet; and a plate that includes a facing surface facing the gear mechanism in an axial direction. The pump inlet is disposed adjacent to the plate on a back surface side of the facing surface.
    Type: Application
    Filed: September 8, 2021
    Publication date: September 28, 2023
    Applicant: JATCO Ltd
    Inventor: Masumi FUJIKAWA
  • Patent number: 11767907
    Abstract: A power transmission device includes a motor, a gear mechanism connected downstream of the motor and lubricated by oil, and a box. The box has a wall part that covers an outer circumference of the gear mechanism, and a jacket part that covers an outer circumference of the wall part. A cooling chamber, in which cooling liquid is introduced, is formed between the wall part and the jacket part. The cooling chamber includes a portion that overlaps with the gear mechanism when seen from a radial direction, and a portion that overlaps the gear mechanism when seen from an axial direction.
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: September 26, 2023
    Assignees: Jatco Ltd, Nissan Motor Co., Ltd.
    Inventors: Kenjiro Yasui, Yusuke Suzuki, Takayoshi Urushibata
  • Patent number: 11766927
    Abstract: A vehicle includes: a low voltage battery constituted by a lithium-ion battery, the low voltage battery supplying an electric power to an electric component mounted to a vehicle; a high voltage battery constituted by a lithium-ion battery, the high voltage battery having an output voltage higher than an output voltage of the low voltage battery; a first rotating electrical machine that operates by an electric power supplied from the high voltage battery, the first rotating electrical machine generating a torque for driving the vehicle; and a second rotating electrical machine for starting the engine. The second rotating electrical machine operates by an electric power supplied from the high voltage battery.
    Type: Grant
    Filed: June 1, 2020
    Date of Patent: September 26, 2023
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Yoshimasa Nishihiro, Masahiko Tahara, Masaharu Mochizuki, Takurou Hirano
  • Patent number: 11767909
    Abstract: A vehicle includes a motor, a gear mechanism connected downstream of the motor, a box that has a motor chamber that houses the motor, a gear chamber that houses the gear mechanism and lubricating oil, and an exhaust pipe. A first cooling box, in which cooling liquid that cools the motor is introduced, is configured on an outer circumference of the motor. A second cooling box, which is connected so that cooling liquid can circulate between the second cooling box and the first cooling box, is configured on an outer circumference of the box. The motor chamber is arranged at a position spaced further apart from the exhaust pipe than the gear chamber.
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: September 26, 2023
    Assignees: Jatco Ltd, Nissan Motor Co., Ltd.
    Inventors: Kenjiro Yasui, Yusuke Suzuki, Takayoshi Urushibata
  • Patent number: 11761534
    Abstract: A power transmission device includes a gear mechanism, a wall part that overlaps with the gear mechanism in an axial direction, a plate provided between the wall part and the gear mechanism in the axial direction, and a park lock mechanism. The park lock mechanism has a parking pawl on a side of a surface of the plate facing the wall part. The park lock mechanism has a manual shaft and/or a detent mechanism on a side of a surface of the plate facing the gear mechanism.
    Type: Grant
    Filed: December 7, 2020
    Date of Patent: September 19, 2023
    Assignee: Jatco Ltd
    Inventors: Kenjiro Yasui, Takayoshi Urushibata, Yusuke Suzuki
  • Patent number: 11754151
    Abstract: A continuously variable transmission for a vehicle includes: a variator including; a primary pulley, a secondary pulley, and an endless annular member wound around the primary pulley and the secondary pulley, the secondary pulley being provided with an urging member configured to generate an urging force in a direction in which a groove width of the secondary pulley is decreased, and a transmission gear ratio of the variator being brought to a high side of a lowest transmission gear ratio by a centrifugal hydraulic operation of an oil stored in a pulley pressure receiving chamber of the primary pulley when a vehicle speed becomes equal to or greater than a predetermined vehicle speed when the vehicle is towed.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: September 12, 2023
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventor: Atsushi Kuroki
  • Patent number: 11754174
    Abstract: The transmission control unit includes a gear ratio abnormality determination unit and a limp home control unit. The gear ratio abnormality determination unit is configured to determine that a gear ratio is abnormal when, during travelling at a predetermined gear position, a difference between an actual gear ratio, which is calculated based on a transmission input shaft rotation speed and a transmission output shaft rotation speed, and a set gear ratio at the predetermined gear position is equal to or greater than a set value.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: September 12, 2023
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Norihira Amano, Masahiro Hamano
  • Patent number: 11754175
    Abstract: The controller starts an output of an engagement instruction of the lockup clutch when a vehicle speed becomes a lockup start vehicle speed under a state where the lockup clutch is disengaged. When the vehicle speed, which is obtained a predetermined time after the output of the engagement instruction is started due to the vehicle speed becoming the lockup start vehicle speed, has reached a predetermined vehicle speed, the controller continues the output of the engagement instruction. When the vehicle speed has not reached the predetermined vehicle speed, the controller stops the output of the engagement instruction and restarts the output of the engagement instruction when the vehicle speed reaches a lockup restart vehicle speed which is set to a vehicle speed higher than the lockup start vehicle speed while the output is stopped.
    Type: Grant
    Filed: October 2, 2020
    Date of Patent: September 12, 2023
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Takeaki Ishibashi, Ikuhiro Iwamoto
  • Patent number: 11746884
    Abstract: A power transmission device includes a pinion gear having a large pinion gear and a small pinion gear, a carrier that supports the pinion gear, a ring gear that engages with the small pinion gear, an oil supply unit positioned above a horizontal line that passes through a revolution center of the pinion gear, and a downstream side wall part facing a gear surface of the large pinion gear. The downstream side wall part is arranged to be adjacent to the oil supply unit further downstream in a revolution direction of the pinion gear than the oil supply unit when viewed from an axial direction.
    Type: Grant
    Filed: December 7, 2020
    Date of Patent: September 5, 2023
    Assignee: Jatco Ltd
    Inventors: Yusuke Suzuki, Takayoshi Urushibata, Kenjiro Yasui
  • Patent number: 11746883
    Abstract: A power transmission device includes a box, a case disposed in the box, a differential mechanism housed in the case, and a planetary gear mechanism disposed in the box and supported by the case. The planetary gear mechanism includes a sun gear and a pinion gear that engages with the sun gear. The box has a shelf part above a horizontal line that passes through a revolution center of the pinion gear. The shelf part is arranged at a position that does not overlap the sun gear when viewed from radially above.
    Type: Grant
    Filed: December 7, 2020
    Date of Patent: September 5, 2023
    Assignee: Jatco Ltd
    Inventors: Kenjiro Yasui, Takayoshi Urushibata, Yusuke Suzuki
  • Patent number: 11746885
    Abstract: A power transmission device includes first and second drive shafts, a differential mechanism, a case, a pinion shaft, a pinion gear, and a bearing. The differential mechanism is connected to the second drive shaft. The differential mechanism includes a first side gear connected to the first drive shaft, a second side gear, first and second pinion mate gears that engage with the first and second side gears, first and second pinion mate shafts that respectively support the first and second pinion mate gears. The pinion gear includes small and large diameter gear parts. The bearing is positioned between the pinion shaft and the pinion gear, and is lubricated via an oil hole that is open facing an outside of the case at a small diameter gear part side. The small diameter gear part is positioned between the first and second pinion mate shafts in a circumferential direction.
    Type: Grant
    Filed: December 7, 2020
    Date of Patent: September 5, 2023
    Assignee: Jatco Ltd
    Inventor: Takaya Kagami
  • Patent number: 11739819
    Abstract: A power transmission device includes a motor including a rotor, a first planetary reduction gear connected downstream of the motor, a second planetary reduction gear connected downstream of the first planetary reduction gear, a differential gear connected downstream of the second planetary reduction gear, and a drive shaft connected downstream of the differential gear. The first planetary reduction gear includes a sun gear and a pinion gear that is a stepless pinion. The second planetary reduction gear includes a sun gear and a pinion gear that is a stepped pinion. The drive shafts is penetrating an inner circumference of the rotor of the motor, an inner circumference of the sun gear of the first planetary reduction gear, and an inner circumference of the sun gear of the second planetary reduction gear.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: August 29, 2023
    Assignee: Jatco Ltd
    Inventors: Hiroki Uehara, Masumi Fujikawa, Toshikazu Oshidari
  • Patent number: 11738737
    Abstract: A control device for a vehicle having: an engine; a variator arranged downstream of the engine in a power transmission path connecting the engine and drive wheels; a mechanical oil pump that is driven by the engine and supplies hydraulic pressure to the variator; and an electric oil pump that supplies hydraulic pressure to the variator, wherein the control device for the vehicle has a controller that executes a low standby control which downshifts the variator by moving a belt of the variator in a radial direction during stopping of the vehicle. The controller limits an output of the engine and increases an amount of oil discharged by the electric oil pump when executing the low standby control.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: August 29, 2023
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventor: Hironori Miyaishi
  • Patent number: 11738752
    Abstract: A control device for a vehicle having: an engine; and a variator arranged downstream of the engine in a power transmission path connecting the engine and drive wheels, wherein the control device for the vehicle has a controller that executes a low standby control which downshifts the variator by moving a belt of the variator in a vertical direction (radial direction) during stopping of the vehicle. After starting the low standby control, the controller releases an output limit of the engine based on an actual secondary pressure of the variator.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: August 29, 2023
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventor: Hironori Miyaishi
  • Patent number: 11739800
    Abstract: A first multi-plate brake device and a second multi-plate brake device are arranged side by side in a direction of a rotating axis X along an inner peripheral surface of a transmission case. In the second multi-plate brake device, the snap ring is supported by a supporting portion which is formed on the first multi-plate brake device side of the snap ring and protrudes from the inner peripheral surface of the transmission case radially inward to the rotating axis X. The piston retainer of the first multi-plate brake device includes an abutting portion that protrudes to the second multi-plate brake device side and abuts the supporting portion from the opposite side of the snap ring of the second multi-plate brake device. The abutting portion includes a thick portion whose radial thickness on a lower side in a vertical direction is increased as compared to on an upper side in the vertical direction based on a state of mounting the automatic transmission on a vehicle.
    Type: Grant
    Filed: November 17, 2020
    Date of Patent: August 29, 2023
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Hisashi Toyama, Yuya Kimura
  • Patent number: 11731606
    Abstract: The lock-up control unit is configured to: in a case where the normal mode is selected, disengage the lock-up clutch when a vehicle speed decreases and reaches a first vehicle speed while the vehicle is traveling in a state where the lock-up clutch is engaged, in a case where the eco mode is selected, disengage the lock-up clutch when the vehicle speed decreases and reaches a second vehicle speed in a brake operation OFF state while the vehicle is traveling in the state where the lock-up clutch is engaged, in the case where the eco mode is selected, disengage the lock-up clutch when the vehicle speed decreases and reaches a third vehicle speed in a brake operation ON state while the vehicle is traveling in the state where the lock-up clutch is engaged, and set the third vehicle speed to a vehicle speed lower than the first vehicle speed, and set the second vehicle speed to a vehicle speed higher than the first vehicle speed.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: August 22, 2023
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventor: Kazuki Hirasako
  • Patent number: 11732798
    Abstract: A transmission case having a storage area inside for an assembling member, includes a first opening in the storage area; a seating portion provided in the storage area and on which the assembling member inserted from an opening direction of the first opening is to be seated; and a mirror-finished portion allowing an opposite portion of the assembling member facing the seating portion to be visually recognized when the assembling member is being inserted to the first opening from the opening direction.
    Type: Grant
    Filed: October 19, 2020
    Date of Patent: August 22, 2023
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Tsutomu Itou, Aya Nakata
  • Patent number: 11725720
    Abstract: In a transmission case, a pattern exerting a water repellent effect is provided around a connection portion for a connection with an electrical component. A water passage is provided on an upper surface of an outer peripheral surface of the transmission case. A drain portion is provided on a downstream side of the water passage. The drain portion is a through hole provided in the transmission case, the through hole connecting with the water passage.
    Type: Grant
    Filed: November 20, 2019
    Date of Patent: August 15, 2023
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Tsutomu Itou, Aya Nakata
  • Publication number: 20230221146
    Abstract: A rotation sensor includes a power supply line, a detection line, a sensor unit, and a switch, wherein a power supply voltage is applied to the sensor unit via the power supply line, and an ON voltage is applied to the switch via the power supply line, and the switch is connected to the detection line.
    Type: Application
    Filed: May 13, 2021
    Publication date: July 13, 2023
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Shohei IINUMA, Takeshi KATOU, Masatoshi AKANUMA, Wataru MATSUSHIMA