Patents by Inventor Tomohiko Sekiguchi

Tomohiko Sekiguchi 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: 20220111464
    Abstract: A novel spot welding method for steel sheets and an aluminum alloy sheet, includes stacked sheet materials from a pair of opposing electrodes to join the sheet materials by resistance heating. The pair of opposing electrodes are in pressure contact with both outer surfaces of the sheet sets. The sheet sets include at least a first and second steel sheet, and an aluminum alloy sheet stacked in this order. A first energization step forms a molten pool between facing surfaces of the first and second steel sheets without melting the aluminum alloy sheet. A second energization step causes a melting reaction between facing surfaces of the second steel sheet and the aluminum alloy sheet. The first and second steel sheets are joined via a first nugget. The second steel sheet and the aluminum alloy sheet are joined via a second nugget including an intermetallic compound generated by the melting reaction.
    Type: Application
    Filed: July 12, 2021
    Publication date: April 14, 2022
    Applicants: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hideaki MATSUOKA, Takashi ASADA, Tatsuyuki AMAGO, Kyosuke IZUNO, Koki NAKADA, Tomohiko SEKIGUCHI, Shuhei OGURA
  • Publication number: 20210291462
    Abstract: A high viscosity material is discharged in the form of a continuous thread from an application nozzle toward an end of a workpiece and a space S on the side of the workpiece so that the high viscosity material in the form of the thread adheres to a front surface of the workpiece and the high viscosity material discharged in the form of the thread into the space on the side of the workpiece pivots around an edge of the workpiece to a back surface of the workpiece and adheres to the back surface of the workpiece. The high viscosity material can thus be applied to both the front and back surfaces of the workpiece in one step of discharging the high viscosity material only from the front surface side of the workpiece.
    Type: Application
    Filed: March 3, 2021
    Publication date: September 23, 2021
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, ATLAS COPCO KK
    Inventors: Shuhei OGURA, Hiroki SUGINO, Tomohiko SEKIGUCHI, Shingo ADACHI, Koki KUWABARA
  • Patent number: 10478966
    Abstract: A workpiece support system includes: a workpiece support device that supports a workpiece by a support body having a support that comes in contact with the workpiece; and a robot that is separately provided outside the workpiece support device and moves the support, wherein the support is configured to be movable within a predetermined range and lockable at an arbitrary position, and wherein, by grasping a part of the locked support body, the robot unlocks the support and moves the unlocked support according to the shape of the workpiece.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: November 19, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tomohiko Sekiguchi, Masataka Mizuno, Kazuyuki Ogusu, Kenichi Asakuma, Kimihiro Nanaeda
  • Patent number: 9726207
    Abstract: A positioning structure that positions two workpieces includes a one positioning portion that is provided on one of the workpieces and includes one inverted portion and a protruding portion; and a other positioning portion that is provided on the other workpiece and includes another inverted portion and a receiving portion, the two positioning portions positioning the two workpieces, by overlapping an end portion of the one positioning portion face-to-face with an end portion of the other positioning portion. The two inverted portions are each such that alignment of the positioning portion is inverted when the one positioning portion is overlapped with the other positioning portion, the protruding portion is arranged on the end portion side of the one positioning portion and is provided protruding toward an overlapping side, and the receiving portion engages with the protruding portion when the one positioning portion is overlapped with the other positioning portion.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: August 8, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Tomohiko Sekiguchi
  • Publication number: 20170157765
    Abstract: A workpiece support system includes: a workpiece support device that supports a workpiece by a support body having a support that comes in contact with the workpiece; and a robot that is separately provided outside the workpiece support device and moves the support, wherein the support is configured to be movable within a predetermined range and lockable at an arbitrary position, and wherein, by grasping a part of the locked support body, the robot unlocks the support and moves the unlocked support according to the shape of the workpiece.
    Type: Application
    Filed: November 30, 2016
    Publication date: June 8, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tomohiko SEKIGUCHI, Masataka MIZUNO, Kazuyuki OGUSU, Kenichi ASAKUMA, Kimihiro NANAEDA
  • Patent number: 9446489
    Abstract: A welding structure includes a sheet-shaped first part to be welded; a sheet-shaped second part to be welded that is positioned with respect to the first part to be welded by engaging with the first part to be welded, to perform welding; and a first positioning portion, a second positioning portion, and a third positioning portion, at which the first and second parts to be welded engage with each other. The first to third positioning portions are each configured to restrict movement of one of the first and second parts to be welded in a positioning direction, with respect to the other, and enable movement of the one in a movable direction perpendicular to the positioning direction, with respect to the other. The movable direction of each of the first and second positioning portions is the same direction as the positioning direction of the third positioning portion.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: September 20, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenta Shima, Atsushi Kawakita, Tomohiko Sekiguchi
  • Publication number: 20150104240
    Abstract: A positioning structure that positions two workpieces includes a one positioning portion that is provided on one of the workpieces and includes one inverted portion and a protruding portion; and a other positioning portion that is provided on the other workpiece and includes another inverted portion and a receiving portion, the two positioning portions positioning the two workpieces, by overlapping an end portion of the one positioning portion face-to-face with an end portion of the other positioning portion. The two inverted portions are each such that alignment of the positioning portion is inverted when the one positioning portion is overlapped with the other positioning portion, the protruding portion is arranged on the end portion side of the one positioning portion and is provided protruding toward an overlapping side, and the receiving portion engages with the protruding portion when the one positioning portion is overlapped with the other positioning portion.
    Type: Application
    Filed: March 5, 2013
    Publication date: April 16, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Tomohiko Sekiguchi
  • Publication number: 20130187323
    Abstract: A welding structure includes a sheet-shaped first part to be welded; a sheet-shaped second part to be welded that is positioned with respect to the first part to be welded by engaging with the first part to be welded, to perform welding; and a first positioning portion, a second positioning portion, and a third positioning portion, at which the first and second parts to be welded engage with each other. The first to third positioning portions are each configured to restrict movement of one of the first and second parts to be welded in a positioning direction, with respect to the other, and enable movement of the one in a movable direction perpendicular to the positioning direction, with respect to the other. The movable direction of each of the first and second positioning portions is the same direction as the positioning direction of the third positioning portion.
    Type: Application
    Filed: August 19, 2011
    Publication date: July 25, 2013
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenta Shima, Atsushi Kawakita, Tomohiko Sekiguchi
  • Publication number: 20130129411
    Abstract: A hole that has two opposing sides is opened in a first part to be welded, two slits are formed in corresponding portions in a second part to be welded at positions corresponding to the hole, and a bridge portion that is made to protrude by plastic deforming a portion between the two slits is provided. A raised portion of the bridge portion of the second part to be welded is inserted into the hole of the first part to be welded, such that the two sides of the hole in the first part to be welded overlap with the two slits in the bridge portion of the second part to be welded, and the first part to be welded and the second part to be welded are welded together while the first part to be welded and the second part to be welded are engaged.
    Type: Application
    Filed: August 5, 2011
    Publication date: May 23, 2013
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenta Shima, Atsushi Kawakita, Tomohiko Sekiguchi