Patents by Inventor Takuhiro Saito

Takuhiro Saito 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: 20200164833
    Abstract: A webbing retractor includes a spool, a motor, a force limiter mechanism, a first rotating body, a second rotating body, a ratchet gear, a pawl body and a control section. The ratchet gear is provided at one of the first rotating body or the second rotating body. The pawl body is provided at another of the first rotating body or the second rotating body. The pawl body can engage with the ratchet gear in a case in which the first rotating body rotates toward one side, and engagement of the pawl body with the ratchet gear being cancelled in a case in which the first rotating body rotates toward another side. The control section drives the motor to rotate in reverse, such that the first rotating body rotates toward another side in a case in which a physical amount relating to load of the passenger exceeds a predetermined value during forward rotational driving.
    Type: Application
    Filed: November 13, 2019
    Publication date: May 28, 2020
    Inventors: Tomoya OWAKI, Takuhiro SAITO, Kazuhiro YAMADA, Atsushi NISHINO
  • Patent number: 10654443
    Abstract: A webbing take-up device includes clutch weights. The clutch weights are supported at the base and include engaging portions. The clutch weights move to a rotation diameter direction outer side when the base is rotated, and are capable of transmitting rotary force applied to the base to the spool. The webbing take-up device is provided with a stopper that is capable of relative rotating relative to the base and that is provided with engaged holes, each including an allowing portion and a restricting portion. The allowing portions allow movement of the engaging portions to the rotation diameter direction outer side when the base is rotating to one side. The restricting portions restrict movement of the engaging portions to the rotation diameter direction outer side when the base is rotating to the other side. The restricting portions are formed integrally with the allowing portions.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: May 19, 2020
    Assignee: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO
    Inventors: Yuya Nagata, Takahiro Osaki, Takuhiro Saito, Tomonari Umakoshi
  • Patent number: 10618762
    Abstract: A webbing take-up device that includes: a cut-off section that cuts off transmission of rotation load along a rotation force transmission route from a second rotation force transmission mechanism to a spool via a first rotation force transmission mechanism due to the rotation load in a pull-out direction becoming a predetermined value or greater; and a resistance section that resists the rotation load during transmission of the rotation load, and that suppresses transmission of the rotation load along the rotation force transmission route in a case in which the rotation load is less than the predetermined value.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: April 14, 2020
    Assignee: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO
    Inventors: Takahiro Osaki, Takamasa Sato, Yuya Nagata, Tomonari Umakoshi, Takuhiro Saito
  • Patent number: 10471929
    Abstract: A webbing take-up device includes a spool on which a webbing worn by an occupant is taken up, and a motor that includes a rotation shaft and a first boss portion disposed coaxially with the rotation shaft. The webbing take-up device further includes an A-gear that is fixed to the rotation shaft, and a B-gear that meshes together with the A-gear and that is rotated by the A-gear being rotated such that the spool is rotated. The webbing take-up device further includes a gear housing that includes a B-gear support portion on which the B-gear is supported, and an engaged hole engaged by the first boss portion so as to have tightening margin therebetween, and to which the motor is fixed in a state in which the first boss portion has engaged with the engaged hole.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: November 12, 2019
    Assignee: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO
    Inventors: Tomonari Umakoshi, Takuhiro Saito, Yuya Nagata, Takahiro Osaki
  • Patent number: 10464523
    Abstract: In a webbing take-up device, an angle from one end portion toward another end portion of a second clutch spring in a direction of winding of a coil portion from the one end portion toward the another end portion of the second clutch spring is 270°. Therefore, in a case in which the one end portion of the second clutch spring is rotated toward a side of the direction of the winding of the coil portion, one end side portion of the second clutch spring is displaced so as to bulge-out toward a side opposite to a side toward which another end side portion bulges-out.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: November 5, 2019
    Assignee: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO
    Inventors: Takahiro Osaki, Yuya Nagata, Tomonari Umakoshi, Takuhiro Saito
  • Patent number: 10457248
    Abstract: A webbing take-up device includes a spool on which a webbing worn by an occupant is taken up, and a motor that includes a rotor with a rotation shaft and a motor housing covering part of the rotor, the rotor being urged toward one axial direction side of the rotation shaft with respect to the motor housing. The webbing take-up device further includes a second transmission mechanism that includes an A-gear fixed to the rotation shaft, and a B-gear meshed together with the A-gear and rotated by the A-gear being rotated toward one side together with the rotation shaft such that the spool is rotated. A helix angle of respective outer teeth of the A-gear is set such that an axial direction force toward the one axial direction side of the rotation shaft acts on the A-gear when the rotation shaft is rotated toward the one side.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: October 29, 2019
    Assignee: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO
    Inventors: Tomonari Umakoshi, Takuhiro Saito, Yuya Nagata, Takahiro Osaki
  • Patent number: 10434979
    Abstract: A webbing take-up device includes a spool, a motor that includes a rotation shaft, and an A-gear, a B-gear, a holder gear, an input gear, a clutch gear, an idle gear, and a spool gear that transmit rotation of the rotation shaft to the spool. The webbing take-up device further includes clutch weights that are moved toward a rotation-radial direction outside by being rotated together with the input gear such that rotation force of the input gear is transmitted to the clutch gear. Moreover, axial centers of rotations of the A-gear, the B-gear, the input gear and the clutch gear, and the idle gear are disposed between an axial center of rotation of the holder gear and an axial center of rotation of the spool gear.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: October 8, 2019
    Assignee: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO
    Inventors: Tomonari Umakoshi, Takuhiro Saito, Yuya Nagata, Takahiro Osaki
  • Patent number: 10421431
    Abstract: A webbing take-up controlling device including: a motor that is configured to operate a centrifugal clutch; and a controller that controls a voltage applied to the motor such that, in the case of operating the centrifugal clutch, a first voltage lower than a target voltage to operate the centrifugal clutch is applied to the motor, and then the target voltage is applied to the motor.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: September 24, 2019
    Assignee: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO
    Inventors: Yuya Nagata, Tomonari Umakoshi, Takuhiro Saito, Takahiro Osaki
  • Patent number: 10399538
    Abstract: In a buckle device, a pressing force, applied from wire ropes to an inside wall face of a wire guide groove of a wire guide, is along an imaginary line passing through a center of a cover plate first hole portion of a cover plate fixing tab of a cover plate and a center of a wire guide hole portion of the wire guide as viewed from the vehicle inside, similarly to a pressing force applied to a first fixing bolt that fixes the cover plate to a support plate, and these pressing forces are both oriented in the same direction. This enables rotation moment to be suppressed from occurring at the cover plate when the wire ropes are pulled toward their length direction leading end side.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: September 3, 2019
    Assignee: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO
    Inventors: Yasunori Hata, Takuhiro Saito, Tatsuhiro Murasaki, Yusuke Watada
  • Patent number: 10351095
    Abstract: A lift-up buckle device has a buckle with which is engaged a tongue through which a webbing, which is applied to a vehicle occupant, is inserted; wires that are made of metal, and whose longitudinal direction one end portions are fixed to the buckle, and that move together with the buckle; a driving portion that is connected to longitudinal direction other end portions of the wires, and that move the wires in a longitudinal direction; a wire guide that is made of metal and holds the wires in a curved state; a guide groove that is formed in the wire guide and in which the wires are inserted; and a resin member that is provided at an interior of the guide groove and abuts the wires.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: July 16, 2019
    Assignee: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO
    Inventors: Tatsuhiro Murasaki, Takuhiro Saito, Yasunori Hata, Yusuke Watada
  • Patent number: 10220811
    Abstract: A reduction in the durability of a coupling member coupled to a buckle is suppressed. A lift-up buckle device includes a buckle that engages with a tongue inserted through webbing worn by an occupant, and wires that each have a portion fixed to the buckle and that are displaced to move the buckle. The lift-up buckle device also includes a wire guide that includes a guide groove that guides the wires, and a soft lower cover that engages with the wire guide and covers the wires. A dimension of an end portion on the buckle side of the guide groove is set so as to increase on progression toward the buckle side.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: March 5, 2019
    Assignee: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO
    Inventors: Tatsuhiro Murasaki, Takuhiro Saito, Yasunori Hata, Yusuke Watada, Koji Hayashi, Makoto Matsuzaki
  • Publication number: 20190001923
    Abstract: In a webbing take-up device, a cover member is disposed on the inner side of a second peripheral wall of a second housing member. Due thereto, an outer side surface of a third peripheral wall of the cover member and an inner side surface of the second peripheral wall of the second housing member oppose each other in a radial direction of urging, which is a radial direction of rotation of rotational urging force of a flat spiral spring, so displacement of the cover member outward in the radial direction of urging can be suppressed.
    Type: Application
    Filed: June 21, 2018
    Publication date: January 3, 2019
    Inventors: Takamasa SATO, Takahiro OSAKI, Yuya NAGATA, Tomonari UMAKOSHI, Takuhiro SAITO
  • Publication number: 20180361975
    Abstract: In a seatbelt device, when paying out webbing from a spool of a webbing take-up device to fit the webbing over the body of an occupant, drive of a first motor of the webbing take-up device is controlled based on the magnitude of a signal level of a load detection signal output by a load sensor according to the physical build of the occupant, and pulse data stored in a storage unit corresponding to each signal level of the load detection signal.
    Type: Application
    Filed: November 29, 2016
    Publication date: December 20, 2018
    Inventors: Yuya NAGATA, Takahiro OSAKI, Tomonari UMAKOSHI, Takuhiro SAITO
  • Publication number: 20180354454
    Abstract: A webbing take-up device includes a spool that is rotated in a take-up direction to take up webbing worn by an occupant and that is rotated in a pull-out direction by the webbing being pulled out, and a frame that rotatably supports the spool. The frame includes a fixed stay portion that is fixed to a vehicle body, and a rotation stop stay portion that is disposed spaced apart from the vehicle body and that by being engaged with the vehicle body is restricted from rotational displacement relative to the fixed stay portion.
    Type: Application
    Filed: June 1, 2018
    Publication date: December 13, 2018
    Inventors: Yuya NAGATA, Takuhiro SAITO, Tomonari UMAKOSHI, Takahiro OSAKI
  • Publication number: 20180354455
    Abstract: There is provided a seat belt retrieval control device including: a drive unit that drives a retrieval of a webbing; and a setting unit that is configured to, when a vehicle attitude is being controlled by an attitude control unit that controls a vehicle attitude, set a retrieval load applied by the drive unit to a predetermined first load, and when the vehicle attitude is not being controlled by the attitude control unit, set the retrieval load to a second load that is greater than the first load.
    Type: Application
    Filed: May 30, 2018
    Publication date: December 13, 2018
    Inventors: Tomonari UMAKOSHI, Yuya NAGATA, Takahiro OSAKI, Takuhiro SAITO
  • Patent number: 10124760
    Abstract: Load input to an occupant from a buckle is reduced. A lift-up buckle device includes a buckle that engages with a tongue inserted through webbing worn by an occupant. The lift-up buckle device also includes wires that each include a portion configuring a first fixed portion fixed to the buckle side and another portion configuring a supported portion supported by a wire guide, and that move the buckle due to a distance between the fixed portions and the supported portions being changed. Respective locations between the fixed portions and the supported portions of the wires are displaced in a direction intersecting an engaged direction of the tongue when an external force in a direction of the engaged direction of the tongue has been input to the buckle.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: November 13, 2018
    Assignee: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO
    Inventors: Yusuke Watada, Takuhiro Saito, Yasunori Hata, Tatsuhiro Murasaki
  • Publication number: 20180237246
    Abstract: A webbing take-up device that includes: a cut-off section that cuts off transmission of rotation load along a rotation force transmission route from a second rotation force transmission mechanism to a spool via a first rotation force transmission mechanism due to the rotation load in a pull-out direction becoming a predetermined value or greater; and a resistance section that resists the rotation load during transmission of the rotation load, and that suppresses transmission of the rotation load along the rotation force transmission route in a case in which the rotation load is less than the predetermined value.
    Type: Application
    Filed: February 6, 2018
    Publication date: August 23, 2018
    Inventors: Takahiro OSAKI, Takamasa SATO, Yuya NAGATA, Tomonari UMAKOSHI, Takuhiro SAITO
  • Publication number: 20180215343
    Abstract: A webbing take-up device includes clutch weights. The clutch weights are supported at the base and include engaging portions. The clutch weights move to a rotation diameter direction outer side when the base is rotated, and are capable of transmitting rotary force applied to the base to the spool. The webbing take-up device is provided with a stopper that is capable of relative rotating relative to the base and that is provided with engaged holes, each including an allowing portion and a restricting portion. The allowing portions allow movement of the engaging portions to the rotation diameter direction outer side when the base is rotating to one side. The restricting portions restrict movement of the engaging portions to the rotation diameter direction outer side when the base is rotating to the other side. The restricting portions are formed integrally with the allowing portions.
    Type: Application
    Filed: June 24, 2016
    Publication date: August 2, 2018
    Inventors: Yuya NAGATA, Takahiro OSAKI, Takuhiro SAITO, Tomonari UMAKOSHI
  • Patent number: 10005424
    Abstract: A webbing take-up device includes a second clutch that transmits rotation of a motor to a spool. The second clutch includes a base including a first spring catch portion, a clutch gear, a clutch spring including a coil portion, having an end portion at one side caught to the first spring catch portion, and a lever that includes a second spring catch portion catching an end portion at another side of the clutch spring, and that enlarges diameter of the coil portion to abut the clutch gear by moving the end portion at the another side of the clutch spring toward one side in the circumferential direction of the base. A terminal end of the end portion at the one side of the clutch spring abuts the first spring catch portion when the lever is rotated toward the one side in the circumferential direction of the base.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: June 26, 2018
    Assignee: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO
    Inventors: Takahiro Osaki, Tomonari Umakoshi, Yuya Nagata, Takuhiro Saito
  • Patent number: 10000184
    Abstract: A webbing take-up device includes a spool that takes up webbing worn by an occupant, an input gear that is rotated by rotation force being transmitted, a spool gear that rotates the spool by being rotated, and a second clutch that is provided between the input gear and the spool gear, and that transmits rotation force of the input gear to the spool gear by being rotated by the input gear. The webbing take-up device further includes a sub clutch spring that is provided between the input gear and the second clutch, that transmits rotation force of the input gear to the second clutch when the input gear is rotated toward one side, and that shuts off transmission of rotation force of the input gear to the second clutch when the input gear is rotated toward another side.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: June 19, 2018
    Assignee: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO
    Inventors: Yuya Nagata, Takahiro Osaki, Takuhiro Saito, Tomonari Umakoshi