Patents by Inventor Hiroshi Uehara

Hiroshi Uehara 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).

  • Publication number: 20210388873
    Abstract: A torque limiter embedded damper device includes a torque limiter unit and a damper unit. The damper unit includes a first rotor, a second rotor, and a stopper mechanism. The second rotor includes a flange axially opposed to the first rotor. The stopper mechanism restricts an angle of relative rotation between the first rotor and the second rotor to a predetermined angular range. The stopper mechanism includes a cutout and a stop pin. The cutout is provided in the flange of the second rotor. The stop pin is fixed to the first rotor. The torque limiter unit includes a friction plate having an annular shape. The annular friction plate is fixed at an inner peripheral part thereof to an outer peripheral part of first rotor or the second rotor by a fixation member. The fixation member is fastened in a state of penetrating the cutout of the flange.
    Type: Application
    Filed: May 17, 2021
    Publication date: December 16, 2021
    Inventor: Hiroshi UEHARA
  • Publication number: 20210388874
    Abstract: A damper device includes a damper unit and a torque limiter unit. The damper unit includes first and second plates each including a plurality of window portions, a hub flange including a plurality of window holes, and a stopper mechanism. The first plate includes an engaging portion and a fixing portion fixed to the second plate. The engaging portion and the fixing portion are disposed radially outside the plurality of window portions. The hub flange includes a protrusion disposed circumferentially between and radially outside adjacent two of the plurality of window holes. The stopper mechanism is configured to be actuated by contact of the protrusion with the engaging portion. A fixation member, by which the first plate and the torque limiter unit are fixed, is disposed circumferentially between adjacent two of the plurality of window portions as seen in a direction along a rotational axis.
    Type: Application
    Filed: May 17, 2021
    Publication date: December 16, 2021
    Inventor: Hiroshi UEHARA
  • Publication number: 20210381556
    Abstract: A power transmission device includes a flywheel and a damper device. The flywheel includes a plurality of fixation holes. The damper device includes an input rotary member, an output rotary member, and a pair of first elastic members. The input rotary member and output rotary member each include a plurality of assembling holes disposed in corresponding positions to the plurality of fixation holes of the flywheel. The plurality of assembling holes are arranged in a circumferential direction such that two pairs of the assembling holes, each pair including two adjacent assembling holes, are each disposed at a larger interval than remaining assembling holes to produce a pair of accommodation spaces. A pair of first accommodation portions, accommodating the pair of first elastic members, is disposed radially outside the pair of accommodation spaces.
    Type: Application
    Filed: May 5, 2021
    Publication date: December 9, 2021
    Inventor: Hiroshi UEHARA
  • Publication number: 20210310522
    Abstract: A damper device includes first and second rotors, a first pre-damper, and a first main elastic member. The second rotor includes a hub and a flange. The first pre-damper elastically couples the hub and the flange in a rotational direction, and is actuated in a first range of torsion angle between the first and second rotors. The first main elastic member elastically couples the first and second rotors in the rotational direction, and is actuated in a greater second range of torsion angle. The first pre-damper includes first and second subordinate elastic members. The first subordinate elastic member is compressed in a neutral state, and urges the flange to a first side in the rotational direction with respect to the hub. The second subordinate elastic member is compressed in the neutral state, and urges the flange to a second side in the rotational direction with respect to the hub.
    Type: Application
    Filed: March 3, 2021
    Publication date: October 7, 2021
    Inventor: Hiroshi UEHARA
  • Publication number: 20210262527
    Abstract: A spring seat installed in a damper device including a first rotor, a second rotor and a plurality of elastic members is disclosed. The spring seat includes an end surface support portion and an outer periphery support portion. The end surface support portion includes a recess on a radially middle part thereof. The recess is recessed toward at least one of the elastic members. The end surface support portion supports one end surface of the at least one of the elastic members. The end surface support portion is supported by a pressing surface of a first accommodation portion of the first rotor and a pressing surface of a second accommodation portion of the second rotor. The outer periphery support portion supports part of a radially outer part of the at least one of the elastic members.
    Type: Application
    Filed: January 26, 2021
    Publication date: August 26, 2021
    Inventor: Hiroshi UEHARA
  • Publication number: 20210262549
    Abstract: A damper device includes a first rotor, a second rotor, a plurality of elastic members and a stopper mechanism. The stopper mechanism includes a first stopper hole, a second stopper hole and a plurality of stop members. The first and second stopper holes are provided on both circumferential sides of each of a plurality of first window holes of the second rotor so as to circumferentially extend therefrom. Each of the first and second stopper holes communicates at one end thereof with each first window hole and extends at the other end thereof to a position radially outside one of a plurality of second window holes of the second rotor. The stop members are fixed to the first rotor. Each stop member axially penetrates each of the first and second stopper holes and is circumferentially movable within each of the first and second stopper holes.
    Type: Application
    Filed: January 26, 2021
    Publication date: August 26, 2021
    Inventor: Hiroshi UEHARA
  • Publication number: 20210262528
    Abstract: A damper device includes a first rotor, a second rotor, a plurality of elastic members and a stopper mechanism. The stopper mechanism includes a plurality of first cutouts, a plurality of second cutouts and a plurality of stop members. A pair of the first and second cutouts is provided on both circumferential sides of each of a plurality of accommodation portions of the second rotor so as to circumferentially extend therefrom. The stop members are fixed to the first rotor. Each stop member is circumferentially movable within the pair of the first and second cutouts. The second rotor includes a first protruding portion circumferentially protruding on one of a pair of pressing surfaces of each accommodation portion. Each of the first cutouts, which is a hole, extends at an end thereof located closer to each accommodation portion toward the first protruding portion.
    Type: Application
    Filed: January 26, 2021
    Publication date: August 26, 2021
    Inventor: Hiroshi UEHARA
  • Publication number: 20210131498
    Abstract: A torsion damper disposed inside a coil spring is disclosed. The torsion damper includes a body and a groove. The body is made of resin. Besides, the body has a columnar shape. The groove is provided on the outer peripheral surface of the body.
    Type: Application
    Filed: October 15, 2020
    Publication date: May 6, 2021
    Inventors: Hiroshi Uehara, Yoshiyuki Hagihara, Masahiro Maeda
  • Publication number: 20210102599
    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: Application
    Filed: June 12, 2020
    Publication date: April 8, 2021
    Inventors: Hiroshi UEHARA, Yoshiyuki HAGIHARA, Masahiro MAEDA
  • Publication number: 20210102584
    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: Application
    Filed: June 12, 2020
    Publication date: April 8, 2021
    Inventors: Hiroshi UEHARA, Yoshiyuki HAGIHARA, Masahiro MAEDA
  • Publication number: 20210102598
    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: Application
    Filed: June 12, 2020
    Publication date: April 8, 2021
    Inventors: Hiroshi UEHARA, Yoshiyuki HAGIHARA, Masahiro MAEDA
  • Patent number: 10968978
    Abstract: The present damper device includes a large hysteresis mechanism, generating a large hysteresis torque, and a hysteresis inhibiting mechanism.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: April 6, 2021
    Assignee: EXEDY CORPORATION
    Inventor: Hiroshi Uehara
  • Patent number: 10948024
    Abstract: A clutch disc includes a core plate and a friction member having an annular shape. The core plate includes a coupling portion having an annular shape and a plurality of fixation portions. The plurality of fixation portions protrude radially outward from the coupling portion and are circumferentially aligned through a plurality of slits each radially extending between adjacent two of the plurality of fixation portions. The friction member is fixed to the plurality of fixation portions and has an inner diameter larger than a diameter of the core plate at inner peripheral ends of the plurality of slits. The friction member includes a plurality of discharge grooves on an inner peripheral end surface thereof in corresponding portions thereof to the plurality of fixation portions. The plurality of discharge grooves lead water to the plurality of slits when the water drops on the inner peripheral end surface of the friction member.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: March 16, 2021
    Assignee: EXEDY CORPORATION
    Inventors: Hiroshi Uehara, Yoshiyuki Hagihara, Masahiro Maeda
  • Publication number: 20210006125
    Abstract: A controller controls switching between a braked state in which a movable meshing part 7 comes close to and meshes with a motor meshing part 6 and a brake released state in which the movable meshing part 7 is separated from the motor meshing part 6.
    Type: Application
    Filed: May 21, 2020
    Publication date: January 7, 2021
    Inventors: Koichi ICHIKI, Hiroshi UEHARA
  • Publication number: 20200393043
    Abstract: The motor is formed to have an outer diameter larger than an outer diameter of a speed reducer, and an electromagnetic clutch mechanism, which is configured to switch the state of an output-side member (movable member) disposed downstream of an output member in a drive transmission path between a drive transmission state and a drive cut-off state from the output member of the speed reducer, is disposed in the axial projection space of a motor with respect to the speed reducer.
    Type: Application
    Filed: March 26, 2020
    Publication date: December 17, 2020
    Inventor: Hiroshi UEHARA
  • Publication number: 20200318691
    Abstract: A torque limiter embedded damper device provided between a power source-side member and an output-side member is disclosed. 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: Application
    Filed: February 18, 2020
    Publication date: October 8, 2020
    Inventor: Hiroshi UEHARA
  • Publication number: 20200248779
    Abstract: The present damper device includes a large hysteresis mechanism, generating a large hysteresis torque, and a hysteresis inhibiting mechanism.
    Type: Application
    Filed: December 4, 2019
    Publication date: August 6, 2020
    Inventor: Hiroshi UEHARA
  • Publication number: 20200244137
    Abstract: The invention provides a speed reducer achieving an improvement of an output of a motor without much being restricted by axial heights of a rotor magnet and a stator core, and a reduction in thickness in an axial direction. Rotary driving of a rotor yoke having a cylindrical shape is used as an input to external gears arranged radially outward of the rotor yoke, and an output member provided with an internal gear meshing with the external gears is rotated at a relatively reduced speed.
    Type: Application
    Filed: November 19, 2019
    Publication date: July 30, 2020
    Inventor: Hiroshi UEHARA
  • Patent number: 10619706
    Abstract: To provide an inexpensive and thin motor with a speed reducer capable of elongating lifetime of bearings by reducing the effect of internal moments acting on an output member without using expensive bearings. A motor with a speed reducer performing output with a gear mechanism rotating to reduce speed around an electric motor M and an eccentric shaft driven to rotate by the electric motor M, in which a plurality of external gears are respectively assembled to the eccentric shaft at positions where moments obtained by multiplying distances in an axial direction from a position of a bearing provided in a speed reducer housing by magnitudes of loads acting on output pins at the positions are cancelled out with each other.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: April 14, 2020
    Assignee: SHINANO KENSHI KABUSHIKI KAISHA
    Inventor: Hiroshi Uehara
  • Publication number: 20200096077
    Abstract: A power transmission device includes a first rotary member, a second rotary member, and a damper mechanism. The first rotary member includes a chamber in an interior thereof. The second rotary member is disposed to be rotatable relative to the first rotary member. The damper mechanism is configured to elastically couple the first rotary member and the second rotary member in a rotational direction. The damper mechanism includes a first damper part disposed inside the chamber and configured to transmit power together with the first rotary member therebetween, a second damper part disposed outside the chamber and radially inward of the first damper part and configured to transmit the power together with the second rotary member therebetween, and an intermediate member including an inertia portion disposed outside the chamber and configured to couple the first damper part and the second damper part.
    Type: Application
    Filed: August 2, 2019
    Publication date: March 26, 2020
    Inventors: Hiroshi UEHARA, Katsunari KATO