Patents Assigned to JATCO
  • Publication number: 20250067333
    Abstract: A power transmission device includes: a case that accommodates a power transmission mechanism; a strainer disposed to face a bottom wall portion in the case; a suction port for oil provided in a portion of the strainer facing the bottom wall portion; and a magnet disposed between the bottom wall portion and the strainer in the case. The magnet and the suction port are provided to be displaced from each other when viewed from a facing direction in which the strainer and the bottom wall portion face each other, and the suction port is provided with an opening facing a magnet side.
    Type: Application
    Filed: March 23, 2023
    Publication date: February 27, 2025
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Akira TSUCHIDA, Katsunori YAMASHITA, Tomoya OTAKI, Tsutomu ITOU
  • Patent number: 12222032
    Abstract: A control device for a vehicle, the vehicle including a belt continuously variable transmission including a mechanical oil pump driven by an engine and an electric oil pump driven by an electric motor, the engine being configured to drive a drive wheel, in which when a rotation speed of the engine is less than or equal to a prescribed rotation speed as the vehicle decelerates, driving of the electric motor is controlled to supply a hydraulic pressure from the electric oil pump to the belt continuously variable transmission, and when the deceleration of the vehicle exceeds a prescribed deceleration, the driving of the electric motor is restricted not to supply the hydraulic pressure from the electric oil pump to the belt continuously variable transmission.
    Type: Grant
    Filed: June 20, 2022
    Date of Patent: February 11, 2025
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Koichi Okuno, Keisuke Iwado, Makoto Oguri, Akira Tsuchida
  • Patent number: 12215776
    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: Grant
    Filed: September 8, 2021
    Date of Patent: February 4, 2025
    Assignee: JATCO LTD
    Inventor: Masumi Fujikawa
  • Patent number: 12215784
    Abstract: A transmission comprising: a primary pulley; a secondary pulley; a transmission member wound around the primary pulley and the secondary pulley; an oil pump configured to supply oil; a hydraulic control circuit configured to adjust a pressure of the oil supplied from the oil pump to a line pressure which is a source pressure of a primary pulley pressure supplied to the primary pulley and a secondary pulley pressure supplied to the secondary pulley; a line pressure detection unit configured to detect the line pressure; and a controller configured to control the hydraulic control circuit, wherein the controller is configured to select, as a target pulley pressure, a higher one of a target value of the primary pulley pressure and a target value of the secondary pulley pressure, variably set, according to an oil temperature, a target differential pressure including a detection variation of the line pressure detection unit that varies according to the oil temperature, set a target line pressure which is a target v
    Type: Grant
    Filed: November 26, 2021
    Date of Patent: February 4, 2025
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Yuji Oishi, Takurou Kawasumi, Yoshihisa Kodama, Seiichirou Takahashi, Hironori Miyaishi
  • Patent number: 12212218
    Abstract: A device includes a rotary electric machine, a liquid supply member configured to supply liquid to the rotary electric machine, and a facing member facing the rotary electric machine in an axial direction with the liquid supply member interposed therebetween. The liquid is supplied to the liquid supply member via the facing member.
    Type: Grant
    Filed: November 10, 2020
    Date of Patent: January 28, 2025
    Assignee: JATCO LTD
    Inventors: Atsushi Maeda, Ryoichi Mizokami, Masaomi Morishita, Masahiro Kosaka
  • Patent number: 12209654
    Abstract: A unit includes a housing configured to accommodate a planetary gear mechanism, wherein the housing includes a flow path through which a coolant flows, the planetary gear mechanism includes a stepped pinion gear, the stepped pinion gear includes a small pinion and a large pinion, and the flow path has a portion that overlaps the large pinion when viewed in a radial direction.
    Type: Grant
    Filed: May 26, 2022
    Date of Patent: January 28, 2025
    Assignee: JATCO LTD
    Inventor: Hiroki Uehara
  • Patent number: 12206316
    Abstract: A unit includes a housing configured to accommodate a gear connected to a motor, and a cover having a portion sandwiched between the gear and the motor, wherein a catch guide is provided in the housing, the catch guide has an opening that opens toward the gear, and the catch guide has a portion that overlaps a radial side surface of the cover when viewed in a radial direction.
    Type: Grant
    Filed: March 18, 2022
    Date of Patent: January 21, 2025
    Assignee: JATCO LTD
    Inventors: Masahiro Kosaka, Hiroki Uehara
  • Patent number: 12188549
    Abstract: Provided is a unit including: a motor case configured to accommodate a motor, a gear case configured to accommodate a gear connected to the motor; and a cover having a portion sandwiched between the gear and the motor, in which the motor case communicates with the gear case via an opening of the cover, and the opening is positioned below a horizontal plane passing through an axis of the gear and orthogonal to a gravity direction.
    Type: Grant
    Filed: March 18, 2022
    Date of Patent: January 7, 2025
    Assignee: JATCO LTD
    Inventors: Masahiro Kosaka, Hiroki Uehara, Yoonseok Choi, Doohee Yoon
  • Patent number: 12188614
    Abstract: A strainer has an inlet for oil; a filter through which the oil that has flowed in from the inlet passes from inside to outside; a first supply port for supplying, to a first oil pump, the oil that has passed through the filter; a second supply port for supplying, to an intermittently driven second oil pump, the oil that has passed through the filter. The second supply port is located more upward than the first supply port; and the filter has a region located below the second supply port.
    Type: Grant
    Filed: January 26, 2022
    Date of Patent: January 7, 2025
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Tomoya Otaki, Akiko Imai, Daisuke Taki
  • Patent number: 12188557
    Abstract: A power transmission device includes a transmission mechanism including a planetary gear set, a first engagement element, and a second engagement element. The first engagement element is a band brake configured to be engaged when the transmission mechanism is in a low gear speed. The second engagement element is a multi-plate friction clutch configured to be engaged when the transmission mechanism is in a high gear speed. The multi-plate friction clutch includes a driven plate and a drive plate. The band brake overlaps with the driven plate and the drive plate of the multi-plate friction clutch in a radial direction.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: January 7, 2025
    Assignee: Jatco Ltd
    Inventors: Hiroki Uehara, Masumi Fujikawa, Toshikazu Oshidari
  • Patent number: 12185457
    Abstract: The control unit includes a wiring board on which a connector is disposed. The connector is disposed on a back surface of the wiring board, the back surface being a back surface on a back side of a facing surface facing a body of the control unit. The wiring board includes legs protruding from the back surface on the back side of the facing surface facing the body.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: December 31, 2024
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Yusuke Sato, Hideyuki Mamiya, Katsunori Yamashita, Hirohisa Yukawa, Akira Suwabayashi
  • Publication number: 20240426376
    Abstract: A control device for a vehicle, the vehicle including a belt continuously variable transmission including a mechanical oil pump driven by an engine and an electric oil pump driven by an electric motor, the engine being configured to drive a drive wheel, in which when a rotation speed of the engine is less than or equal to a prescribed rotation speed as the vehicle decelerates, driving of the electric motor is controlled to supply a hydraulic pressure from the electric oil pump to the belt continuously variable transmission, and when the deceleration of the vehicle exceeds a prescribed deceleration, the driving of the electric motor is restricted not to supply the hydraulic pressure from the electric oil pump to the belt continuously variable transmission.
    Type: Application
    Filed: June 20, 2022
    Publication date: December 26, 2024
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Koichi OKUNO, Keisuke IWADO, Makoto OGURI, Akira TSUCHIDA
  • Patent number: 12173783
    Abstract: A continuously variable transmission has an oil pan, an oil strainer located above the oil pan and a control valve unit located above the oil pan. The control valve unit has a shape having a cutting portion formed by a part of the control valve unit being cut out when viewed from an oil pan side. The oil strainer is arranged so as to overlap the cutting portion. With this structure, it is possible to ease a restriction on layout in terms of a height direction in the continuously variable transmission.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: December 24, 2024
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Kazuya Numata, Tahei Toyoshima, Daisuke Yanagawa, Tomoya Otaki, Akira Higashiyama, Fuminori Satoh, Naoya Shimizu
  • Patent number: 12173789
    Abstract: A hydraulic control device for a hydraulic actuation machine including a main oil pump configured to supply oil to the hydraulic actuation machine, a sub oil pump configured to temporarily supply oil to the hydraulic actuation machine based on a drive request so as to compensate for an oil shortfall when supply of oil from the main oil pump to the hydraulic actuation machine is stopped or insufficient, and a drive unit configured to drive the sub oil pump, wherein when an elapsed time elapsed from a time point when the sub oil pump is driven reaches a predetermined time, the hydraulic control device generates an air discharge command for discharging air accumulated in the sub oil pump and outputs the air discharge command to the drive unit, and the drive unit drives the sub oil pump to discharge the air accumulated in the sub oil pump based on the output air discharge command.
    Type: Grant
    Filed: November 26, 2021
    Date of Patent: December 24, 2024
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Yuji Oishi, Keisuke Iwado, Hiroyuki Tokoi, Masanori Satou
  • Patent number: 12169003
    Abstract: A wet-type friction engaging device includes a first friction member and a second friction member defining a groove formed on a surface of a base facing the first friction member.
    Type: Grant
    Filed: August 19, 2021
    Date of Patent: December 17, 2024
    Assignee: Jatco Ltd
    Inventor: Michinori Matsuo
  • Patent number: 12146567
    Abstract: A transmission used for executing, a process of performing, when a speed at which an accelerator opening is decreased is higher than a predetermined speed, an upshift until a predetermined opening is reached, and fixing a speed ratio, a process of performing, when the speed is equal to or lower than the predetermined speed and a turbine rotation speed is higher than a predetermined rotation speed, the upshift until the predetermined opening is reached, and performing, when the accelerator opening is smaller than the predetermined opening, the upshift so as to fix the speed ratio, and a process of performing, when the speed is equal to or lower than the predetermined speed and the turbine rotation speed is equal to or lower than the predetermined rotation speed, the upshift until the predetermined opening is reached, and performing, when the accelerator opening is smaller than the predetermined opening, the upshift.
    Type: Grant
    Filed: January 18, 2022
    Date of Patent: November 19, 2024
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Peng Liu, Seiichirou Takahashi, Daigo Kishi, Tetsuya Shimada
  • Patent number: 12140222
    Abstract: A power transmission device, includes a motor; a gear mechanism connected downstream of the motor; a pump that sucks oil through a pump inlet; and a box that accommodates the motor and the gear mechanism. The pump inlet is provided on an inner wall of the box.
    Type: Grant
    Filed: September 8, 2021
    Date of Patent: November 12, 2024
    Assignee: JATCO LTD
    Inventor: Masumi Fujikawa
  • Patent number: 12140225
    Abstract: A valve arrangement structure of a control valve unit includes a control valve body to which oil is supplied from a main pump. The valve arrangement structure includes a pressure regulator valve that is arranged in the control valve body and regulates a pressure of discharged oil from the main pump to a line pressure, a pressure control valve that is arranged in the control valve body and regulates the pressure of the oil to a required pressure with the line pressure as a source pressure, and a first oil passage that is provided in the control valve body and connects the main pump and the pressure regulator valve. The pressure control valve is arranged on a second oil passage branched from the first oil passage.
    Type: Grant
    Filed: September 21, 2021
    Date of Patent: November 12, 2024
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventor: Hisao Nobu
  • Patent number: 12135078
    Abstract: An oil pressure supply device includes: a first oil pump configured to be operated by a traveling drive source of a vehicle; a second oil pump configured to be operated by a motor different from the traveling drive source and to be switched between an operation and a stop according to a traveling condition of the vehicle; a pressure regulating circuit configured to regulate an oil pressure generated by the first oil pump and the second oil pump and supply the regulated oil pressure to an oil chamber; an oil passage configured to connect the second oil pump with an oil source; and a check valve provided in the oil passage.
    Type: Grant
    Filed: December 8, 2020
    Date of Patent: November 5, 2024
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Tomoko Sugano, Takurou Kawasumi, Tomoya Otaki
  • Patent number: RE50323
    Abstract: Provided is a lubricant guiding structure in an automatic transmission in which a baffle plate configured to regulate the movement of a lubricant agitated by a driven sprocket is provided at one side, where an oil pump is located, in the direction of a rotational axis of the driven sprocket. As viewed from the rotational axis direction, a division wall disposed to extend across a chain is provided closer to the chain than a base of the baffle plate. As viewed from the rotational axis direction, the baffle plate is provided with a guide wall extending along a torque transmission-side chain of the chain wound on the driven sprocket. As viewed from the rotational axis-direction, the guide wall includes an inclined portion inclined in the direction coming closer to the chain as the distance to the distal end side decreases.
    Type: Grant
    Filed: November 16, 2022
    Date of Patent: March 4, 2025
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Tsutomu Itou, Tou Ou, Shinji Higashide, Yoshiteru Ueno