Patents by Inventor Naohiro Wada

Naohiro Wada 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: 11876433
    Abstract: A housing of a drive device includes a tubular portion, a side plate portion, a plate portion, and a peripheral wall portion. The tubular portion extends in a first direction and accommodates a motor. The side plate portion has a plate shape intersecting the first direction, and is at one end portion of the tubular portion in the first direction. The plate portion expands from the tubular portion along one of the first direction and a second direction perpendicular to the first direction. The peripheral wall portion surrounds an inverter accommodation portion that accommodates inverter when viewed from a third direction perpendicular to the first direction and the second direction, and is connected to the plate portion. Each of a pump and an oil cooler is at any of one end portion of the peripheral wall portion in the second direction, another end portion of the plate portion in the third direction, and another end portion of the side plate portion in the first direction.
    Type: Grant
    Filed: November 5, 2021
    Date of Patent: January 16, 2024
    Assignee: NIDEC CORPORATION
    Inventors: Yuki Ishikawa, Hitoshi Kuroyanagi, Naohiro Wada
  • Publication number: 20230313886
    Abstract: A drive apparatus includes a housing including a motor, a power transmission unit, a parking mechanism, and a gear accommodation portion. The parking mechanism includes a parking gear, a pawl, a transmission unit, and a sleeve. The transmission unit includes a cam rod and a cam attached to the cam rod to operate the pawl. The cam is guided by the sleeve. The gear accommodation portion has first and second housing members, a breather, and a dividing wall partitioning a space where the breather opens inside the gear accommodation portion. The second housing member is provided with a holding recess that opens to a first side in an axial direction and holds the sleeve. The first housing member is provided with a retaining wall that covers a surface facing a second side in the axial direction of the sleeve. The retaining wall is a part of the dividing wall.
    Type: Application
    Filed: February 27, 2023
    Publication date: October 5, 2023
    Inventors: Hideaki MATSUO, Mitsuhiro HARA, Keisuke ASO, Naohiro WADA, Yusuke MAKINO
  • Patent number: 11777364
    Abstract: A gear portion of a drive device is connected to a motor shaft. An oil passage through which oil to cool a motor flows includes a first oil passage, a second oil passage, a third oil passage, and a fourth oil passage. The first oil passage connects a gear accommodation portion and a pump accommodation portion. The second oil passage connects the pump accommodation portion and an oil cooler. The third oil passage connects the oil cooler and the fourth oil passage. The fourth oil passage connects the third oil passage and a motor accommodation portion. Each of the first oil passage, the second oil passage, and the third oil passage is in a first housing portion. The fourth oil passage is in a third housing portion.
    Type: Grant
    Filed: November 5, 2021
    Date of Patent: October 3, 2023
    Assignee: NIDEC CORPORATION
    Inventors: Yuki Ishikawa, Hitoshi Kuroyanagi, Naohiro Wada
  • Patent number: 11597180
    Abstract: Provided is a composite material for vehicles capable of substantially preventing the occurrence of wrinkles caused by ease stitching. This composite material for vehicles is a layered product of a skin material and a polyurethane foam sheet. The skin material has a play structure which, when the composite material for vehicles is stitched, allows the skin material to follow deformation caused by the stitching with a smooth state of a surface of the skin material maintained. The skin material is a woven fabric including warp yarns and weft yarns. The warp yarns and/or the weft yarns include two or more types of yarns having different total finenesses, and form the play structure.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: March 7, 2023
    Assignees: SEIREN CO., LTD., TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventors: Naohiro Wada, Hayato Wakatsuki, Toshio Nakamura
  • Publication number: 20230010604
    Abstract: A drive device includes a motor and an inverter. A motor axis is parallel to an output axis. The inverter is located in a second direction orthogonal to a first direction with respect to the motor axis and extends in a third direction orthogonal to the first and second directions. When viewed from the first direction, a virtual straight line passing through the axes extends in the third direction. An inverter housing portion overlaps the axes when viewed from the second direction, and has a boundary wall on the virtual straight line side in the second direction. In the second direction, a distance between the boundary wall and the output axis is smaller than a distance between the boundary wall and the motor axis. A motor side connection portion has a portion closer to the side opposite to the output axis than the motor axis in the third direction.
    Type: Application
    Filed: November 19, 2020
    Publication date: January 12, 2023
    Inventors: Yuki ISHIKAWA, Hitoshi KUROYANAGI, Naohiro WADA, Hironobu KUMAGAI, Hisashi FUJIHARA
  • Patent number: 11486484
    Abstract: A motor assembly includes a motor, a housing that accommodates the motor, an inverter electrically connected to the motor, an inverter case that accommodates the inverter, an auxiliary device provided in a lower portion of the housing to oppose a road surface, a wire harness that includes a first connector connected to a connector provided in the inverter case, a second connector connected to a connector provided in the auxiliary device, and an electric wire connecting the first connector and the second connector, and a lower connector cover provided in the lower portion of the housing and covering the second connector from a lower side.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: November 1, 2022
    Assignees: NIDEC CORPORATION, NIDEC TOSOK CORPORATION
    Inventors: Shuhei Nakamatsu, Keisuke Fukunaga, Naohiro Wada, Masumi Mizutani
  • Patent number: 11431220
    Abstract: A motor assembly includes a motor, a housing that houses the motor, an inverter that is electrically connected to the motor, an inverter case that houses the inverter and is provided integrally with the housing, a wire harness including a first connector electrically connected to a connector positioned on a side surface of the inverter case, a second connector electrically connected to a connector of the housing, and an electric wire electrically connecting the first connector and the second connector, and a side connector cover provided over the side surface of the inverter case, covering the first connector laterally.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: August 30, 2022
    Assignees: NIDEC CORPORATION, NIDEC TOSOK CORPORATION
    Inventors: Shuhei Nakamatsu, Keisuke Fukunaga, Naohiro Wada, Masumi Mizutani
  • Publication number: 20220247281
    Abstract: An inverter unit, provided in a motor unit that rotates an axle of a vehicle, includes an inverter, and an inverter case that houses the inverter therein. The inverter case includes an inverter case body that opens to one side in a predetermined direction, and a plate-shaped cover that closes an opening of the inverter case body. The cover has a raised portion raised in the predetermined direction. The raised portion has a hollow curved shape protruding in the predetermined direction.
    Type: Application
    Filed: May 9, 2020
    Publication date: August 4, 2022
    Inventors: Mizuki NIHIRA, Naohiro WADA
  • Publication number: 20220158528
    Abstract: A housing of a drive device includes a tubular portion, a side plate portion, a plate portion, and a peripheral wall portion. The tubular portion extends in a first direction and accommodates a motor. The side plate portion has a plate shape intersecting the first direction, and is at one end portion of the tubular portion in the first direction. The plate portion expands from the tubular portion along one of the first direction and a second direction perpendicular to the first direction. The peripheral wall portion surrounds an inverter accommodation portion that accommodates inverter when viewed from a third direction perpendicular to the first direction and the second direction, and is connected to the plate portion. Each of a pump and an oil cooler is at any of one end portion of the peripheral wall portion in the second direction, another end portion of the plate portion in the third direction, and another end portion of the side plate portion in the first direction.
    Type: Application
    Filed: November 5, 2021
    Publication date: May 19, 2022
    Inventors: Yuki ISHIKAWA, Hitoshi KUROYANAGI, Naohiro WADA
  • Publication number: 20220158523
    Abstract: A gear portion of a drive device is connected to a motor shaft. An oil passage through which oil to cool a motor flows includes a first oil passage, a second oil passage, a third oil passage, and a fourth oil passage. The first oil passage connects a gear accommodation portion and a pump accommodation portion. The second oil passage connects the pump accommodation portion and an oil cooler. The third oil passage connects the oil cooler and the fourth oil passage. The fourth oil passage connects the third oil passage and a motor accommodation portion. Each of the first oil passage, the second oil passage, and the third oil passage is in a first housing portion. The fourth oil passage is in a third housing portion.
    Type: Application
    Filed: November 5, 2021
    Publication date: May 19, 2022
    Inventors: Yuki ISHIKAWA, Hitoshi KUROYANAGI, Naohiro WADA
  • Patent number: 11239724
    Abstract: A motor assembly includes a motor, a housing that houses the motor, an inverter that is electrically connected to the motor, an inverter case that houses the inverter and is provided integrally with the housing, a wire harness electrically connected between a connector of the inverter case and a connector of the housing, a cooling water hose connecting between a hose nipple of the inverter case and a hose nipple of the housing, and a retainer to fix the wire harness and the cooling water hose in a bundled state to the housing. The housing includes an axle connecting portion to which an axle of a vehicle is connected, and the wire harness is farther away from the axle than the cooling water hose at a position facing the axle.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: February 1, 2022
    Assignee: NIDEC CORPORATION
    Inventors: Shuhei Nakamatsu, Keisuke Fukunaga, Naohiro Wada
  • Publication number: 20200398522
    Abstract: Provided is a composite material for vehicles capable of substantially preventing the occurrence of wrinkles caused by ease stitching. This composite material for vehicles is a layered product of a skin material and a polyurethane foam sheet. The skin material has a play structure which, when the composite material for vehicles is stitched, allows the skin material to follow deformation caused by the stitching with a smooth state of a surface of the skin material maintained. The skin material is a woven fabric including warp yarns and weft yarns. The warp yarns and/or the weft yarns include two or more types of yarns having different total finenesses, and form the play structure.
    Type: Application
    Filed: June 19, 2020
    Publication date: December 24, 2020
    Inventors: Naohiro Wada, Hayato Wakatsuki, Toshio Nakamura
  • Publication number: 20200127529
    Abstract: A motor assembly includes a motor, a housing that houses the motor, an inverter that is electrically connected to the motor, an inverter case that houses the inverter and is provided integrally with the housing, a wire harness electrically connected between a connector of the inverter case and a connector of the housing, a cooling water hose connecting between a hose nipple of the inverter case and a hose nipple of the housing, and a retainer to fix the wire harness and the cooling water hose in a bundled state to the housing. The housing includes an axle connecting portion to which an axle of a vehicle is connected, and the wire harness is farther away from the axle than the cooling water hose at a position facing the axle.
    Type: Application
    Filed: October 17, 2019
    Publication date: April 23, 2020
    Inventors: Shuhei NAKAMATSU, Keisuke FUKUNAGA, Naohiro WADA
  • Publication number: 20200127527
    Abstract: A motor assembly includes a motor, a housing that accommodates the motor, an inverter electrically connected to the motor, an inverter case that accommodates the inverter, an auxiliary device provided in a lower portion of the housing to oppose a road surface, a wire harness that includes a first connector connected to a connector provided in the inverter case, a second connector connected to a connector provided in the auxiliary device, and an electric wire connecting the first connector and the second connector, and a lower connector cover provided in the lower portion of the housing and covering the second connector from a lower side.
    Type: Application
    Filed: October 17, 2019
    Publication date: April 23, 2020
    Inventors: Shuhei NAKAMATSU, Keisuke FUKUNAGA, Naohiro WADA, Masumi MIZUTANI
  • Publication number: 20200127528
    Abstract: A motor assembly includes a motor, a housing that houses the motor, an inverter that is electrically connected to the motor, an inverter case that houses the inverter and is provided integrally with the housing, a wire harness including a first connector electrically connected to a connector positioned on a side surface of the inverter case, a second connector electrically connected to a connector of the housing, and an electric wire electrically connecting the first connector and the second connector, and a side connector cover provided over the side surface of the inverter case, covering the first connector laterally.
    Type: Application
    Filed: October 17, 2019
    Publication date: April 23, 2020
    Inventors: Shuhei NAKAMATSU, Keisuke FUKUNAGA, Naohiro WADA, Masumi MIZUTANI
  • Publication number: 20190177910
    Abstract: Provided is a nubuck-like fabric 100 having a nubuck-like distinct moist feel and nubuck-like distinctive nap that are close to those of natural leather and also having superior abrasion resistance with a woven or knitted fabric used for a base material. The nubuck-like fabric 100 includes a flexible sheet 100? formed by application of a resin 20 to the woven or knitted fabric. The flexible sheet 100? includes a filled portion 40 that includes filaments 10 and the resin 20, and a non-filled portion 30 including spaces. The flexible sheet 100? also includes a nap part 50 at its surface, and the nap part 50 has a thickness ranging from 0.01 to 0.4 mm, inclusive.
    Type: Application
    Filed: December 5, 2018
    Publication date: June 13, 2019
    Inventors: Kazunori Kawamura, Naohiro Wada