Patents by Inventor Eiji Miyachi

Eiji Miyachi 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: 10731521
    Abstract: A valve opening and closing timing control apparatus includes a driving-side rotation member, a driven-side rotation member, a phase adjustment mechanism configured as a differential type reduction gear mechanism where an inner gear rotates about a rotation axis while revolving around an eccentric axis which is disposed parallel to the rotation axis in a state where a drive shaft fitted in the inner gear is driven to rotate about the rotation axis, a biasing member provided at an outer periphery of the drive shaft and applying a biasing force to mesh an external teeth portion of the inner gear with an internal teeth portion of the ring gear, and a restriction portion provided at the drive shaft to restrict a displacement of the inner gear in a direction where the inner gear is separated from the ring gear against the biasing force of the biasing member.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: August 4, 2020
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventor: Eiji Miyachi
  • Patent number: 10626762
    Abstract: A valve opening/closing timing control device that sets a relative rotation phase between a driving-side rotating body and a driven-side rotating body using a driving force of an electric actuator is compactly configured. The device is provided with: a first bearing disposed between an inner periphery of the driven-side rotating body and an eccentric member; a second bearing disposed between the eccentric member and an input gear on a side of the first bearing away from a camshaft in a direction along a rotational axis; and a front plate fixed to the driving-side rotating body on a side of the second bearing away from the camshaft. An Oldham coupling is disposed on the side away from the camshaft of both the first bearing and the second bearing in the direction along the rotational axis.
    Type: Grant
    Filed: September 4, 2017
    Date of Patent: April 21, 2020
    Assignee: AISIN SEKI KABUSHIKI KAISHA
    Inventors: Eiji Miyachi, Hiroki Mukaide
  • Patent number: 10514109
    Abstract: A valve opening and closing timing control apparatus includes: a driving side rotator disposed rotatably about a rotation axis and configured to rotate synchronously with a crankshaft of an internal combustion engine; a driven side rotator disposed rotatably about the rotation axis and configured to be rotatable relative to the driving side rotator and to rotate integrally with a valve opening and closing camshaft of the internal combustion engine; and a phase adjustment mechanism configured to set a relative rotation phase between the driving side rotator and the driven side rotator by a driving force of an electric actuator. The phase adjustment mechanism includes: an internally toothed ring gear; an inner gear; and a drive shaft, and the valve opening and closing timing control apparatus further includes: a biasing member; and a displacement regulation portion.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: December 24, 2019
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Eiji Miyachi, Tomoharu Otake, Yoshiaki Iguchi, Shigemitsu Suzuki, Hiroki Mukaide
  • Patent number: 10450906
    Abstract: A phase adjustment mechanism is constructed as a differential deceleration mechanism where a ring gear is relatively rotated on a basis of a difference in the number of teeth between the ring gear and an inner gear by revolution of an eccentric axis with reference to a rotation axis by an electric actuator. A coupling member is provided including a first engagement portion engaging with a driving-side rotational member in a displaceable manner in a first direction serving as a radial direction and a second engagement portion engaging with the inner gear in a displaceable manner in a second direction orthogonal to the first direction.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: October 22, 2019
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Hiroki Mukaide, Eiji Miyachi, Yoshiaki Iguchi, Tomoharu Otake
  • Publication number: 20190292952
    Abstract: A valve opening/closing timing control device that sets a relative rotation phase between a driving-side rotating body and a driven-side rotating body using a driving force of an electric actuator is compactly configured. The device is provided with: a first bearing disposed between an inner periphery of the driven-side rotating body and an eccentric member; a second bearing disposed between the eccentric member and an input gear on a side of the first bearing away from a camshaft in a direction along a rotational axis; and a front plate fixed to the driving-side rotating body on a side of the second bearing away from the camshaft. An Oldham coupling is disposed on the side away from the camshaft of both the first bearing and the second bearing in the direction along the rotational axis.
    Type: Application
    Filed: September 4, 2017
    Publication date: September 26, 2019
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Eiji Miyachi, Hiroki Mukaide
  • Patent number: 10385985
    Abstract: A valve opening and closing timing control apparatus includes: a driving side rotator disposed rotatably about a rotation axis and configured to rotate synchronously with a crankshaft; a driven side rotator disposed rotatably about the rotation axis and configured to be rotatable relative to the driving side rotator and to rotate integrally with a valve opening/closing camshaft; a phase adjustment mechanism configured to set a relative rotation phase between the driving side and driven side rotators by a driving force of an electric actuator, a biasing member provided on an outer periphery of a drive shaft to apply a biasing force in a direction such that an inner gear is engaged with a ring gear; and a displacement regulation portion configured to regulate a displacement of the inner gear.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: August 20, 2019
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Eiji Miyachi, Hiroki Mukaide, Tomoharu Otake, Yoshiaki Iguchi, Shigemitsu Suzuki
  • Publication number: 20180371964
    Abstract: A valve opening and closing timing control apparatus includes a driving-side rotation member, a driven-side rotation member, a phase adjustment mechanism configured as a differential type reduction gear mechanism where an inner gear rotates about a rotation axis while revolving around an eccentric axis which is disposed parallel to the rotation axis in a state where a drive shaft fitted in the inner gear is driven to rotate about the rotation axis, a biasing member provided at an outer periphery of the drive shaft and applying a biasing force to mesh an external teeth portion of the inner gear with an internal teeth portion of the ring gear, and a restriction portion provided at the drive shaft to restrict a displacement of the inner gear in a direction where the inner gear is separated from the ring gear against the biasing force of the biasing member.
    Type: Application
    Filed: June 21, 2018
    Publication date: December 27, 2018
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventor: Eiji Miyachi
  • Publication number: 20180306070
    Abstract: A phase adjustment mechanism is constructed as a differential deceleration mechanism where a ring gear is relatively rotated on a basis of a difference in the number of teeth between the ring gear and an inner gear by revolution of an eccentric axis with reference to a rotation axis by an electric actuator. A coupling member is provided including a first engagement portion engaging with a driving-side rotational member in a displaceable manner in a first direction serving as a radial direction and a second engagement portion engaging with the inner gear in a displaceable manner in a second direction orthogonal to the first direction.
    Type: Application
    Filed: September 16, 2016
    Publication date: October 25, 2018
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Hiroki MUKAIDE, Eiji MIYACHI, Yoshiaki IGUCHI, Tomoharu OTAKE
  • Publication number: 20180073655
    Abstract: A valve opening and closing timing control apparatus includes: a driving side rotator disposed rotatably about a rotation axis and configured to rotate synchronously with a crankshaft; a driven side rotator disposed rotatably about the rotation axis and configured to be rotatable relative to the driving side rotator and to rotate integrally with a valve opening/closing camshaft; a phase adjustment mechanism configured to set a relative rotation phase between the driving side and driven side rotators by a driving force of an electric actuator, a biasing member provided on an outer periphery of a drive shaft to apply a biasing force in a direction such that an inner gear is engaged with a ring gear; and a displacement regulation portion configured to regulate a displacement of the inner gear.
    Type: Application
    Filed: September 14, 2017
    Publication date: March 15, 2018
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Eiji Miyachi, Hiroki Mukaide, Tomoharu Otake, Yoshiaki Iguchi, Shigemitsu Suzuki
  • Publication number: 20180073656
    Abstract: A valve opening and closing timing control apparatus includes: a driving side rotator disposed rotatably about a rotation axis and configured to rotate synchronously with a crankshaft of an internal combustion engine; a driven side rotator disposed rotatably about the rotation axis and configured to be rotatable relative to the driving side rotator and to rotate integrally with a valve opening and closing camshaft of the internal combustion engine; and a phase adjustment mechanism configured to set a relative rotation phase between the driving side rotator and the driven side rotator by a driving force of an electric actuator. The phase adjustment mechanism includes: an internally toothed ring gear; an inner gear; and a drive shaft, and the valve opening and closing timing control apparatus further includes: a biasing member; and a displacement regulation portion.
    Type: Application
    Filed: September 14, 2017
    Publication date: March 15, 2018
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Eiji Miyachi, Tomoharu Otake, Yoshiaki Iguchi, Shigemitsu Suzuki, Hiroki Mukaide
  • Patent number: 9828900
    Abstract: Provided is a valve housing configured to be inserted into an insertion hole that extends in a direction approximately orthogonal to an extending direction of an oil path and configured to be freely movable along an extending direction of the insertion hole. When an oil jet switching valve is closed, the tip end portion of the valve housing is configured to be pressed to the inner wall surface of the oil path by receiving an energized force from an energizing unit.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: November 28, 2017
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Shinya Takasaki, Akihiro Ikeda, Eiji Miyachi
  • Patent number: 9822676
    Abstract: A structure for attaching an oil jet valve includes a bracket secured to an internal combustion engine with a seal member, an attachment concavity extending through the interior of the bracket, an insertion hole extending through the interior of the internal combustion engine, an oil jet valve, a first stepped part formed in the oil jet valve, a second stepped part formed in the attachment concavity, and an interlocking member. The width of a wide part of the first stepped part is less than the width of a narrow part of the second stepped part. The width of the wide part of the first stepped part is less than the width of a portion, of the inner surface of the attachment concavity, that faces the wide part of the first stepped part.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: November 21, 2017
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Shinya Takasaki, Eiji Miyachi
  • Publication number: 20170138228
    Abstract: A valve opening and closing timing control apparatus includes a phase adjustment mechanism of a gear type specifying a relative rotation phase between a driving-side rotation member and a driven-side rotation member by an electric actuator, the phase adjustment mechanism causing a revolution of a position of an eccentric axis about a rotation axis by the electric actuator so that an input gear connected to the driven-side rotation member via an Oldham coupling rotates relative to an output gear fixed to the driven-side rotation member, a groove portion in a linear form and a protruding portion in a rectangular form in the Oldham coupling slidably engaging with each other between the driving-side rotation member and an Oldham ring, a groove portion in a linear form and a protruding portion in a rectangular form in the Oldham coupling slidably engaging with each other between the Oldham ring and the input gear.
    Type: Application
    Filed: August 11, 2015
    Publication date: May 18, 2017
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Eiji MIYACHI, Naoto TOMA, Yoshiaki IGUCHI, Eiri NAGATA, Nobuaki KURITA, Masayoshi TAKEUCHI, Katsuhiro TSUJIMOTO
  • Publication number: 20160326920
    Abstract: A structure for attaching an oil jet valve includes a bracket secured to an internal combustion engine with a seal member, an attachment concavity extending through the interior of the bracket, an insertion hole extending through the interior of the internal combustion engine, an oil jet valve, a first stepped part formed in the oil jet valve, a second stepped part formed in the attachment concavity, and an interlocking member. The width of a wide part of the first stepped part is less than the width of a narrow part of the second stepped part. The width of the wide part of the first stepped part is less than the width of a portion, of the inner surface of the attachment concavity, that faces the wide part of the first stepped part.
    Type: Application
    Filed: January 15, 2015
    Publication date: November 10, 2016
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Shinya TAKASAKI, Eiji MIYACHI
  • Patent number: 9291283
    Abstract: A hydraulic control device includes a first predetermined portion receiving the oil discharged from a pump, a first channel establishing communication between the pump and the first predetermined portion, a second channel branched from the first channel for supplying oil to a second predetermined portion, a flow passage area regulation unit arranged on the second channel and equipped with a spool that moves in a flow passage area increasing direction when an oil pressure in the second channel increases and in a decreasing direction when the oil pressure decreases, and a bypass channel, which is provided separately from a portion of the second channel where the spool disconnects the second channel, establishes communication between an upstream side and a downstream side of the second channel relative to the flow passage area regulation unit and supplies oil to the second predetermined portion even when the spool disconnects the second channel.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: March 22, 2016
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Eiji Miyachi, Hisashi Ono
  • Publication number: 20150292390
    Abstract: Provided is a valve housing configured to be inserted into an insertion hole that extends in a direction approximately orthogonal to an extending direction of an oil path and configured to be freely movable along an extending direction of the insertion hole. When an oil jet switching valve is closed, the tip end portion of the valve housing is configured to be pressed to the inner wall surface of the oil path by receiving an energized force from an energizing unit.
    Type: Application
    Filed: August 28, 2013
    Publication date: October 15, 2015
    Applicants: AISIN SEIKI KABUSHIKI KAISHA, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shinya Takasaki, Akihiro Ikeda, Eiji Miyachi
  • Patent number: 8640663
    Abstract: An oil pressure control apparatus includes: a pump that ejects oil by being driven by rotation of an engine; a first flow passage interconnecting the pump and a first predetermined portion; a second flow passage branching from the first flow passage and supplying oil to a second predetermined portion; and a flow passage area adjusting portion that adjusts a flow passage area of the second flow passage according to oil pressure in the second flow passage. The flow passage area adjusting portion includes a spool formed such that a first pressure receiving face and a second pressure receiving face having an area smaller than that of the first pressure receiving face oppose each other with the second flow passage interposed therebetween, with the spool moving according to oil pressure in the second flow passage, and a biasing member biasing the spool in a direction toward the second pressure receiving face.
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: February 4, 2014
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventor: Eiji Miyachi
  • Patent number: 8627656
    Abstract: An oil supply device for a vehicle includes an oil pump driven by a rotation of an internal combustion engine, a hydraulic actuator to which oil is supplied from the oil pump, an engine lubricating system to which the oil is supplied from the oil pump, an oil supply adjusting valve adjusting a supply condition of the oil from the oil pump to the hydraulic actuator and the engine lubricating system, a first oil supply passage supplying the oil from the oil pump to the hydraulic actuator, and a second oil supply passage supplying the oil from the oil pump to the engine lubricating system, wherein the oil supply adjusting valve consistently distributes the oil to the first oil supply passage and the second oil supply passage.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: January 14, 2014
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Eiji Miyachi, Hisashi Ono
  • Patent number: 8505506
    Abstract: An oil pressure control apparatus includes a control valve mechanism being in communication with a pump via a first fluid passage and being in communication with a control apparatus via a second fluid passage, a third fluid passage diverging from the first fluid passage to supply oil to a predetermined portion other than the control apparatus, and a fluid passage dimension regulating mechanism including a movable member provided at the third fluid passage and including an opening for regulating a fluid passage dimension of the third fluid passage. The fluid passage dimension regulating mechanism is in communication with a fourth fluid passage diverging from the second fluid passage and biases the movable member to a side increasing the fluid passage dimension by applying the hydraulic pressure of the fourth fluid passage to the movable member separately from the hydraulic pressure of the third fluid passage.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: August 13, 2013
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Eiji Miyachi, Yasuo Ozawa
  • Publication number: 20130139916
    Abstract: An oil pressure control apparatus includes: a pump that ejects oil by being driven by rotation of an engine; a first flow passage interconnecting the pump and a first predetermined portion; a second flow passage branching from the first flow passage and supplying oil to a second predetermined portion; and a flow passage area adjusting portion that adjusts a flow passage area of the second flow passage according to oil pressure in the second flow passage. The flow passage area adjusting portion includes a spool formed such that a first pressure receiving face and a second pressure receiving face having an area smaller than that of the first pressure receiving face oppose each other with the second flow passage interposed therebetween, with the spool moving according to oil pressure in the second flow passage, and a biasing member biasing the spool in a direction toward the second pressure receiving face.
    Type: Application
    Filed: May 18, 2011
    Publication date: June 6, 2013
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventor: Eiji Miyachi