Patents Assigned to Exedy Corporation
  • Patent number: 11569766
    Abstract: A drive unit attached to a mobile entity is disclosed. The drive unit includes a motor, a first detector, and a controller. The first detector detects vehicle speed information regarding a vehicle speed of the mobile entity. The controller performs PWM control for the motor. The controller controls a duty cycle of a PWM signal in accordance with the vehicle speed information detected by the first detector.
    Type: Grant
    Filed: June 2, 2021
    Date of Patent: January 31, 2023
    Assignee: EXEDY CORPORATION
    Inventors: Junichi Ito, Hitoshi Katsura, Taichi Kitamura, Chika Baba
  • Patent number: 11543002
    Abstract: A power transmission device includes an input rotary member, an intermediate rotary member, an output rotary member, a friction engaging part and a load adjusting mechanism. A torque is inputted to the input rotary member. The torque is inputted from the input rotary member to the intermediate rotary member. The torque is outputted from the output rotary member. The friction engaging part is engaged by friction with a friction force depending on a load applied thereto. The friction engaging part is configured to transmit the torque between the intermediate rotary member and the output rotary member. The load adjusting mechanism is configured to adjust the load applied to the friction engaging part in accordance with the torque inputted to the input rotary member.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: January 3, 2023
    Assignee: EXEDY CORPORATION
    Inventors: Yuki Kawahara, Hitoshi Katsura, Katsuaki Waki
  • Patent number: 11545869
    Abstract: A motor includes a support frame, a stator, a bearing member, and a rotor. The support frame includes first and second tubular parts, and a vent hole. The second tubular part is disposed radially outside the first tubular part. The vent hole, extending axially, is provided between the first and second tubular parts. The stator is disposed radially outside the second tubular part, and supported by the second tubular part. The bearing member is disposed inside and supported by the first tubular part. The rotor includes a rotor frame, a shaft, and a permanent magnet. The rotor frame is disposed on a first side with respect to the support frame in the axial direction. The shaft is fixed to the rotor frame. The shaft is attached rotatably to the support frame through the bearing member. The permanent magnet is disposed radially outside the stator, and supported by the rotor frame.
    Type: Grant
    Filed: March 15, 2021
    Date of Patent: January 3, 2023
    Assignee: EXEDY CORPORATION
    Inventors: Yoshifumi Shimogaki, Takashi Imoto
  • Patent number: 11535094
    Abstract: A drive unit includes a rotary electric machine, a first fluid coupling, and a differential device. The first fluid coupling is configured to transmit a power outputted from the rotary electric machine through a hydraulic fluid. The differential device is disposed coaxial with the first fluid coupling. The differential device is configured to cause differential rotation of a pair of drive wheels.
    Type: Grant
    Filed: March 1, 2022
    Date of Patent: December 27, 2022
    Assignee: EXEDY CORPORATION
    Inventor: Yuki Kawahara
  • Patent number: 11499603
    Abstract: A torque limiter, fixed to a flywheel including an annular portion to which knock pins each including a trunk portion are fixed, is disclosed. The torque limiter includes a first plate, a second plate axially opposed to the first plate, a friction disc disposed between the first and second plates, a pressing member, and a third plate. The pressing member presses the second plate onto the friction disc. The third plate holds the pressing member together with the second plate therebetween. The third plate includes knock pin through holes such that the knock pin are fitted therein. The third plate is attached at an attachment surface thereof to the flywheel. A length between a surface of the pressing member, facing an interior of an accommodation portion of the flywheel, and the attachment surface of the third plate is shorter than a length of the trunk portion of each knock pin.
    Type: Grant
    Filed: June 12, 2020
    Date of Patent: November 15, 2022
    Assignee: EXEDY CORPORATION
    Inventors: Hiroshi Uehara, Yoshiyuki Hagihara, Masahiro Maeda
  • Patent number: 11485217
    Abstract: A drive unit is disclosed. The drive unit includes a first drive source, a first torque converter, a second drive source, a second torque converter, and a transmission. A torque is inputted from the first drive source to the first torque converter. The first torque converter includes a first turbine. A torque is inputted from the second drive source to the second torque converter. The second torque converter includes a second turbine. The second turbine is coupled to the first turbine. The transmission is disposed between a drive wheel and both the first and second torque converters.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: November 1, 2022
    Assignee: EXEDY CORPORATION
    Inventor: Yoshihiro Matsuoka
  • Patent number: 11486463
    Abstract: A power transmission device includes a flywheel and a torque limiter unit fixed to the flywheel. The flywheel includes an annular portion and an accommodation portion provided on an inner peripheral side of the annular portion to accommodate the torque limiter unit. The torque limiter unit includes a first plate, a second plate, a friction disc disposed between the first and second plates, and a pressing member. A torque is inputted to the first plate. The first plate includes first engaging portions. The second plate is axially opposed to and non-rotatable relative to the first plate. The second plate includes second engaging portions engaged with the first engaging portions. The pressing member presses the second plate onto the friction disc. The annular portion of the flywheel is provided with recesses on the inner peripheral surface thereof. The recesses are recessed radially outward in opposed positions to the second engaging portions.
    Type: Grant
    Filed: June 12, 2020
    Date of Patent: November 1, 2022
    Assignee: EXEDY CORPORATION
    Inventors: Hiroshi Uehara, Yoshiyuki Hagihara, Masahiro Maeda
  • Patent number: 11473659
    Abstract: A torque fluctuation inhibiting device includes first and second rotatable rotors, a centrifugal element and a cam mechanism. The first rotor includes an accommodation portion. The second rotor is rotatable with and relative to the first rotor. The centrifugal element is disposed in the accommodation portion to be radially movable, and receives a centrifugal force generated by rotation of the first or second rotor. The cam mechanism receives the centrifugal force acting on the centrifugal element, and converts the centrifugal force into a circumferential force directed to reduce rotational phase difference between the first and second rotors. The cam mechanism includes a cam surface provided on the centrifugal element, and a cam follower which contacts the cam surface. The cam follower transmits a force therethrough between the centrifugal element and the second rotor. The centrifugal element is radially moved while rolling on an inner wall surface of the accommodation portion.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: October 18, 2022
    Assignee: EXEDY CORPORATION
    Inventor: Koichi Higuchi
  • Patent number: 11454298
    Abstract: A torque limiter fixed to a flywheel including an annular portion and an accommodation portion is disclosed. The torque limiter includes a first plate, a second plate axially opposed to the first plate, a friction disc disposed between the first and second plates, a pressing member, and a third plate. A torque is inputted to the first plate. The pressing member presses the second plate onto the friction disc. The third plate supports the pressing member with the second plate therebetween while the pressing member is compressed. The third plate includes a support portion supporting the pressing member and a tubular portion provided in an outer peripheral part of the support portion. The tubular portion covers an outer peripheral surface of the friction disc. The tubular portion axially extends and is opposed to an inner peripheral surface of the annular portion of the flywheel, and includes first openings circumferentially aligned.
    Type: Grant
    Filed: June 12, 2020
    Date of Patent: September 27, 2022
    Assignee: EXEDY CORPORATION
    Inventors: Hiroshi Uehara, Yoshiyuki Hagihara, Masahiro Maeda
  • Patent number: 11441654
    Abstract: A lock-up device includes a clutch part and a damper part. The clutch part is disposed between a front cover and a turbine, and transmits or blocks torque. The damper part transmits torque from the clutch part to the turbine, and absorbs torsional vibration. The damper part includes input and output members, elastic members, and a support member. The input member is connected to the clutch part. The output member is connected to the turbine. The elastic members connect the input and output members. The support member has a connecting part, a regulating part, and a stopper part. The regulating part is provided such that the output member is interposed axially between the regulating part and part of the input member. The stopper part is configured to contact the output member and prohibit the input and output members from rotating relative to each other by a predetermined angle or more.
    Type: Grant
    Filed: May 3, 2021
    Date of Patent: September 13, 2022
    Assignee: EXEDY CORPORATION
    Inventor: Mitsuhiro Sasaki
  • Patent number: 11433755
    Abstract: A drive device includes a fluid coupling and a rotary electrical machine. The fluid coupling is configured such that a torque is inputted thereto from a first side in an axial direction and is outputted therefrom to a second side in the axial direction. The rotary electrical machine includes a first stator and a rotor. The first stator is disposed in a non-rotatable manner. The rotor is disposed to be rotated about a rotational axis of the fluid coupling. The rotary electrical machine is disposed on the second side with respect to the fluid coupling in the axial direction. The rotary electrical machine overlaps the fluid coupling in an axial view.
    Type: Grant
    Filed: August 9, 2021
    Date of Patent: September 6, 2022
    Assignee: EXEDY CORPORATION
    Inventors: Kenji Kitada, Yuki Kawahara, Tomohiro Wada, Takuma Shimada, Yukiyoshi Takada
  • Patent number: 11434979
    Abstract: A drive unit for driving a drive wheel is disclosed. The drive unit includes a motor, a torque converter and a power output part. The torque converter is a component to which a power is inputted from the motor. The power output part outputs the power, inputted thereto from the torque converter, to the drive wheel. The power output part includes a first gear train and a second gear train. The first gear train outputs the power, inputted to the power output part from the torque converter, in a first rotational direction. The second gear train outputs the power, inputted to the power output part from the torque converter, in a second rotational direction reverse to the first rotational direction.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: September 6, 2022
    Assignee: EXEDY CORPORATION
    Inventor: Yoshihiro Matsuoka
  • Patent number: 11433756
    Abstract: A drive device includes a fluid coupling, a rotary electrical machine, and a damper device. The fluid coupling includes an input unit and an output unit. The input unit includes an impeller. The output unit includes a turbine. The rotary electrical machine includes a first stator and a rotor. The first stator is disposed in a non-rotatable manner. The rotor is attached to the output unit. The damper device is disposed axially adjacent to the fluid coupling. The damper device is connected to the input unit.
    Type: Grant
    Filed: August 9, 2021
    Date of Patent: September 6, 2022
    Assignee: EXEDY CORPORATION
    Inventors: Kenji Kitada, Yuki Kawahara, Tomohiro Wada, Takuma Shimada, Yukiyoshi Takada
  • Patent number: 11427241
    Abstract: A drive unit includes a drive wheel, a prime mover, a coupling mechanism and a support frame. The coupling mechanism includes first and second coupling members. The first coupling member includes a first opposed surface. The second coupling member includes a second opposed surface opposed to the first opposed surface. The second coupling member is attached to the first coupling member in a detachable manner. The support frame is attached to the coupling mechanism. The support frame supports the drive wheel and the prime mover. The first coupling member includes a first vertical groove and a first transverse groove on the first opposed surface. The second coupling member includes a second vertical groove and a second transverse groove on the second opposed surface. The second vertical groove is opposed to the first vertical groove. The second transverse groove is opposed to the first transverse groove.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: August 30, 2022
    Assignee: EXEDY CORPORATION
    Inventors: Hitoshi Katsura, Taichi Kitamura, Chika Baba
  • Patent number: 11428292
    Abstract: A torque fluctuation inhibiting device is disclosed. The torque fluctuation inhibiting device includes an elastic member, an input member, a mass body and a centrifugal element. The input member is a member to which a torque is inputted through the elastic member. The input member is disposed to be rotatable. The mass body is disposed to be rotated with the input member and be rotatable relative to the input member. The centrifugal element is disposed radially outside the elastic member. The centrifugal element is disposed to be radially movable by a centrifugal force acting thereon in rotation of the input member.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: August 30, 2022
    Assignee: EXEDY CORPORATION
    Inventors: Yusuke Tomita, Yusuke Okamachi
  • Patent number: 11428291
    Abstract: A damper device for transmitting power to an output-side member is disclosed. The damper device includes input-side and output-side rotors, a plurality of elastic members, and a hysteresis generating mechanism. The input-side rotor, to which power is inputted, is rotatable. The output-side rotor is rotatable relative to the input-side rotor. The output-side rotor includes a hub and a plurality of flanges. The hub is coupled to the output-side member. The plurality of flanges extend radially outward from the hub. The plurality of flanges are disposed at predetermined intervals in a circumferential direction. The plurality of elastic members are disposed circumferentially between the plurality of flanges, and elastically couple the input-side rotor and the output-side rotor in the circumferential direction.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: August 30, 2022
    Assignee: EXEDY CORPORATION
    Inventors: Yusuke Tomita, Yusuke Okamachi
  • Patent number: 11408468
    Abstract: A torque limiter embedded damper device is provided between a power source-side member and an output-side member. The torque limiter embedded damper device includes a damper unit coupled to the output-side member, and a torque limiter unit that limits torque transmitted between the power source-side member and the damper unit. The damper unit includes first and second plates opposed to each other. The first and second plates have a disc shape. The first plate includes a first coupling portion in an outer peripheral end thereof. The second plate includes a second coupling portion in an outer peripheral end thereof. The first and second coupling portions are coupled to each other. The torque limiter unit includes a friction disc including a third coupling portion in an inner peripheral part thereof. The third coupling portion is coupled to the damper unit and disposed radially inside the first and second coupling portions.
    Type: Grant
    Filed: February 18, 2020
    Date of Patent: August 9, 2022
    Assignee: EXEDY CORPORATION
    Inventor: Hiroshi Uehara
  • Patent number: 11384824
    Abstract: A lock-up device includes a clutch part, a piston, a sleeve, and an oil chamber plate. The clutch part is disposed between a front cover and a turbine. The piston is axially movable, and brings the clutch part into a torque-transmission state. The sleeve is fixed to the inner peripheral part of the front cover. The sleeve has a piston support part and a first butt part. The piston support part supports an inner peripheral surface of the piston to be axially movable. The first butt part is formed on the outer peripheral surface of the piston support part. The oil chamber plate is provided between the piston and the turbine. The oil chamber plate has a second butt part. The second butt part is butt-welded with the first butt part. The oil chamber plate forms an oil chamber. Hydraulic fluid is supplied between the oil chamber and the piston.
    Type: Grant
    Filed: May 3, 2021
    Date of Patent: July 12, 2022
    Assignee: EXEDY CORPORATION
    Inventor: Mitsuhiro Sasaki
  • Patent number: 11378133
    Abstract: A damper device includes first and second rotary members, elastic members, and seat members. The first rotary member includes an annular chamber, and first engaging portions provided in the annular chamber. The second rotary member includes a second engaging portion. The elastic members are aligned in a circumferential direction in the annular chamber, and elastically couple the first and second rotary members in a rotational direction. Each seat member is disposed between a circumferential end surface of each elastic member and both the first engaging portions and the second engaging portion. Each seat member includes first and second contact surfaces. The first contact surface contacts the circumferential end surface of each elastic member. The second contact surface contacts the second engaging portion. The first and second contact surfaces tilt at angles to prevent a radially outward force from acting on each seat member when each elastic member is elastically deformed.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: July 5, 2022
    Assignee: EXEDY CORPORATION
    Inventors: Masataka Aikawa, Hiroki Matsuo
  • Patent number: 11368059
    Abstract: A rotating electric machine includes a non-rotating member, a stator fixed to the non-rotating member, a field coil fixed to the non-rotating member, disposed on an inner diameter side of the stator, and having an iron core and a winding wound around the iron core, and a rotor rotatably disposed between the stator and the field coil. The rotor has, at a portion facing the stator, different radial dimensions with respect to a rotary shaft of the rotor between a one end of the rotor in an extending direction of the rotary shaft and a portion different from the one end in the extending direction.
    Type: Grant
    Filed: April 15, 2020
    Date of Patent: June 21, 2022
    Assignee: EXEDY CORPORATION
    Inventors: Hitoshi Katsura, Taichi Kitamura, Kenji Kitada