Patents by Inventor Yutaka MIKAZUKI

Yutaka MIKAZUKI 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: 20230023627
    Abstract: A lateral surface member structure (100) of a vehicle body (1) includes a tubular body (110) extending in a front-rear direction of the vehicle body (1) and an impact absorbing member (120) disposed inside the tubular body (110). The impact absorbing member (120) includes a web (121) extending along the front-rear direction and flat in a vehicle width direction, a vehicle outer flange (122) joined to a vehicle outer end portion of the web (121) and extending along the front-rear direction, and a vehicle inner flange (123) joined to a vehicle inner end portion of the web (121) and extending along the front-rear direction. The vehicle outer flange (122) and the vehicle inner flange (123) each include a rib (122R, 123R) disposed so as to sandwich the web (121) from above and below and extending along the front-rear direction.
    Type: Application
    Filed: February 4, 2021
    Publication date: January 26, 2023
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Yasunori ITO, Yutaka MIKAZUKI, Mitsuharu YAMAGATA, Toshiyuki NIWA
  • Publication number: 20220363122
    Abstract: An under body structure of an automobile enabling batteries to be mounted on an automobile by a simple configuration and efficiently transferring load at the time of a collision, that is, an under body structure 100 of an automobile provided with a body floor 110 forming a floor part of the automobile and batteries 50 (battery cells or battery modules) directly suspended from and fastened to a bottom side of the body floor 110.
    Type: Application
    Filed: October 2, 2020
    Publication date: November 17, 2022
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Yutaka MIKAZUKI, Yasunori ITO
  • Patent number: 11414032
    Abstract: A closed cross-sectional structure member includes a hollow member, the hollow member having a collision side wall part located on a collision side, an opposed collision side wall part opposing the collision side wall part, a pair of first side wall part and second side wall part connecting with end portions of the collision side wall part and end portions of the opposed collision side wall part, a first inner wall part extending from the first side wall part to an inside of the hollow member, a second inner wall part extending from the second side wall part to the inside of the hollow member, a third inner wall part connecting with the first inner wall part and the collision side wall part, and a fourth inner wall part connecting with the second inner wall part and the collision side wall part.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: August 16, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Soma Sonobe, Atsushi Ono, Yutaka Mikazuki
  • Publication number: 20210162940
    Abstract: A closed cross-sectional structure member includes a hollow member, the hollow member having a collision side wall part located on a collision side, an opposed collision side wall part opposing the collision side wall part, a pair of first side wall part and second side wall part connecting with end portions of the collision side wall part and end portions of the opposed collision side wall part, a first inner wall part extending from the first side wall part to an inside of the hollow member, a second inner wall part extending from the second side wall part to the inside of the hollow member, a third inner wall part connecting with the first inner wall part and the collision side wall part, and a fourth inner wall part connecting with the second inner wall part and the collision side wall part.
    Type: Application
    Filed: June 13, 2019
    Publication date: June 3, 2021
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Soma SONOBE, Atsushi ONO, Yutaka MIKAZUKI
  • Patent number: 10981601
    Abstract: In an impact-absorbing member which extends in a vehicle length direction of an automobile and whose both end portions in the vehicle length direction have a collision-side end portion and a non-collision-side end portion whose positions become mutually different when seen from the vehicle length direction, an outer member and an inner member of the impact-absorbing member are formed so that a position of a gravity center at the collision-side end portion and a position of a gravity center at the non-collision-side end portion become mutually different according to a positional relationship between the collision-side end portion and the non-collision-side end portion in order to suppress a tensile stress generated at the collision-side end portion and suppress a compressive stress generated at the non-collision-side end portion in a collision.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: April 20, 2021
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Yutaka Mikazuki, Eiji Isogai, Seiya Ishii
  • Patent number: 10787142
    Abstract: This supporting structure for an underrun protector includes a stay body that connects a beam and a frame to each other; a stay reinforcing body that reinforces the stay body from an outside in a vehicle width direction; and a gusset provided between the stay reinforcing body and the beam. A stay body web face of the stay body is provided with an opening part. A pair of wall face parts provided to extend outward in the vehicle width direction from both ends of the opening part in a vehicle forward-rearward direction is provided so as to face each other. Each of the wall face parts is provided at a height corresponding to an installation position of the gusset and abuts against an inner surface of the stay reinforcing body in the vehicle width direction.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: September 29, 2020
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Yutaka Mikazuki, Eiji Isogai, Masahiro Nakata, Kenji Yamamoto
  • Patent number: 10661328
    Abstract: A production method of a wheel rim includes: a step of forming a cylindrical rim material into a rim shape; and a step of increasing a sheet thickness of at least one opening end edge of the rim material at least one of before and after the step of forming of the cylindrical rim material. In addition, in the step of increasing of the sheet thickness, in a state in which the opening end edge is inserted into an annular groove of a die provided with the annular groove which is wider than the sheet thickness of the opening end edge, a thickened portion is formed by exerting a compressive load in an axial direction of the rim material on the opening end edge.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: May 26, 2020
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Yoshiyuki Kaseda, Yutaka Mikazuki
  • Patent number: 10603703
    Abstract: The present invention provides a method of manufacturing a press-formed product. The method includes: a first process of preparing a material that is long in a first direction, and when viewed in a cross-section perpendicular to the first direction, the cross-section is a hollow cross-section that is long in a second direction perpendicular to the first direction; and a second process of bending the material in a direction intersecting the second direction when viewed from the first direction, by pressing the material along the second direction.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: March 31, 2020
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Eiji Isogai, Nobusato Kojima, Riki Okamoto, Yutaka Mikazuki
  • Publication number: 20200039585
    Abstract: In an impact-absorbing member which extends in a vehicle length direction of an automobile and whose both end portions in the vehicle length direction have a collision-side end portion and a non-collision-side end portion whose positions become mutually different when seen from the vehicle length direction, an outer member and an inner member of the impact-absorbing member are formed so that a position of a gravity center at the collision-side end portion and a position of a gravity center at the non-collision-side end portion become mutually different according to a positional relationship between the collision-side end portion and the non-collision-side end portion in order to suppress a tensile stress generated at the collision-side end portion and suppress a compressive stress generated at the non-collision-side end portion in a collision.
    Type: Application
    Filed: March 31, 2017
    Publication date: February 6, 2020
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Yutaka MIKAZUKI, Eiji ISOGAI, Seiya ISHII
  • Patent number: 10427633
    Abstract: [Object] To improve load resistance performance in response to collision. [Solution] An end structure of a vehicle according to the present invention includes: a beam 2 that extends in a vehicle width direction; and a connecting structure 3 that connects the beam 2 to a vehicle body frame. In a cross-sectional view perpendicular to the vehicle width direction, the beam 2 includes a first top surface part 2a and a first bottom surface part 2b which face each other, a first side surface part 2c that connects one ends of the first top surface part 2a and the first bottom surface part 2b, and first flange parts 2d that are formed to protrude vertically outwardly at the other ends of the first top surface part 2a and the first bottom surface part 2b.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: October 1, 2019
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Yutaka Mikazuki, Eiji Isogai, Kenji Yamamoto, Takashi Ariga, Seiya Ishii
  • Patent number: 10384251
    Abstract: In performing burring processing on a sheet-like member, the following processes are performed: a punching process of performing punching processing of the sheet-like member; a hole expansion process of performing hole expansion processing of a punched hole formed by the punching process; a re-punching process of performing punching processing again on a portion surrounding the punched hole expanded by force in the hole expansion process; and a burring process of pushing a portion surrounding a re-punched hole that is a punched hole formed by the re-punching process and forming a vertical wall.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: August 20, 2019
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Eiji Isogai, Yutaka Mikazuki, Riki Okamoto
  • Publication number: 20190184924
    Abstract: This supporting structure for an underrun protector includes a stay body that connects a beam and a frame to each other; a stay reinforcing body that reinforces the stay body from an outside in a vehicle width direction; and a gusset provided between the stay reinforcing body and the beam. A stay body web face of the stay body is provided with an opening part. A pair of wall face parts provided to extend outward in the vehicle width direction from both ends of the opening part in a vehicle forward-rearward direction is provided so as to face each other. Each of the wall face parts is provided at a height corresponding to an installation position of the gusset and abuts against an inner surface of the stay reinforcing body in the vehicle width direction.
    Type: Application
    Filed: August 24, 2017
    Publication date: June 20, 2019
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Yutaka MIKAZUKI, Eiji ISOGAI, Masahiro NAKATA, Kenji YAMAMOTO
  • Publication number: 20180265025
    Abstract: [Object] To improve load resistance performance in response to collision. [Solution] An end structure of a vehicle according to the present invention includes: a beam 2 that extends in a vehicle width direction; and a connecting structure 3 that connects the beam 2 to a vehicle body frame. In a cross-sectional view perpendicular to the vehicle width direction, the beam 2 includes a first top surface part 2a and a first bottom surface part 2b which face each other, a first side surface part 2c that connects one ends of the first top surface part 2a and the first bottom surface part 2b, and first flange parts 2d that are formed to protrude vertically outwardly at the other ends of the first top surface part 2a and the first bottom surface part 2b.
    Type: Application
    Filed: February 1, 2016
    Publication date: September 20, 2018
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Yutaka MIKAZUKI, Eiji ISOGAI, Kenji YAMAMOTO, Takashi ARIGA, Seiya ISHII
  • Publication number: 20180043412
    Abstract: In performing burring processing on a sheet-like member, the following processes are performed: a punching process of performing punching processing of the sheet-like member; a hole expansion process of performing hole expansion processing of a punched hole formed by the punching process; a re-punching process of performing punching processing again on a portion surrounding the punched hole expanded by force in the hole expansion process; and a burring process of pushing a portion surrounding a re-punched hole that is a punched hole formed by the re-punching process and forming a vertical wall.
    Type: Application
    Filed: March 9, 2016
    Publication date: February 15, 2018
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Eiji ISOGAI, Yutaka MIKAZUKI, Riki OKAMOTO
  • Publication number: 20170232492
    Abstract: The present invention provides a method of manufacturing a press-formed product. The method includes: a first process of preparing a material that is long in a first direction, and when viewed in a cross-section perpendicular to the first direction, the cross-section is a hollow cross-section that is long in a second direction perpendicular to the first direction; and a second process of bending the material in a direction intersecting the second direction when viewed from the first direction, by pressing the material along the second direction.
    Type: Application
    Filed: September 30, 2015
    Publication date: August 17, 2017
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Eiji ISOGAI, Nobusato KOJIMA, Riki OKAMOTO, Yutaka MIKAZUKI
  • Publication number: 20160332210
    Abstract: A production method of a wheel rim includes: a step of forming a cylindrical rim material into a rim shape; and a step of increasing a sheet thickness of at least one opening end edge of the rim material at least one of before and after the step of forming of the cylindrical rim material. In addition, in the step of increasing of the sheet thickness, in a state in which the opening end edge is inserted into an annular groove of a die provided with the annular groove which is wider than the sheet thickness of the opening end edge, a thickened portion is formed by exerting a compressive load in an axial direction of the rim material on the opening end edge.
    Type: Application
    Filed: March 12, 2015
    Publication date: November 17, 2016
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Yoshiyuki KASEDA, Yutaka MIKAZUKI