Patents by Inventor Keisuke Ebisumoto

Keisuke Ebisumoto 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: 20210094618
    Abstract: A vehicle body structure includes a side sill having a closed cross-section portion, and a reinforcement body inside the closed cross-section portion and joined to the side sill. The reinforcement body comprises first and second reinforcement portions. The first reinforcement portion has a first bonding surface on the upper side and is joined to an inner wall of the closed cross-section portion at a portion other than the first bonding surface, and the second reinforcement portion has a second bonding surface facing the first bonding surface from above the first bonding surface, and is joined to the inner wall at a portion other than the second bonding surface. The first and second bonding surfaces are bonded together through a damping member made of an adhesive material. The first and second bonding surfaces are disposed at an inclination angle of 30 degrees or less with respect to a horizontal plane.
    Type: Application
    Filed: September 17, 2020
    Publication date: April 1, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Keisuke EBISUMOTO, Tadashi YAMAZAKI, Yuki KATAOKA, Manabu TATSUDA
  • Publication number: 20210070375
    Abstract: A vehicle-body structure which prevent deformation of a floor tunnel caused by a side collision load transmitted from a cross member to the floor tunnel via a seat mounting bracket. A pair of left and right backbone frames extending in a vehicle front-rear direction are provided each of which faces a top and a side of a floor tunnel and is fixed to the floor tunnel. A tunnel reinforcement is provided that includes a front projection, an intermediate projection, and a rear projection abutting on an underside of the floor tunnel. The backbone frame includes multiple beads abutting on the floor tunnel. The tunnel reinforcement is fixed at the front projection, the intermediate projection, and the rear projection to the seat mounting bracket via the floor tunnel and is also fixed to the multiple beads of the backbone frame via the floor tunnel.
    Type: Application
    Filed: August 31, 2020
    Publication date: March 11, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Keisuke EBISUMOTO, Hirotaka NATSUME, Kazuhiro KAGEYAMA
  • Publication number: 20210070371
    Abstract: A vehicle-body structure that effectively distributes and transfers a side collision load in the vehicle width direction. A cross member includes a cross member top face facing a floor panel, and a cross member front face and a cross member rear face extending from respective ends in a front-rear direction of the cross member top face to the floor panel. A reinforcement member is at a side sill-side end of the cross member top face of the cross member, and a fragile portion extending in the vehicle front-rear direction is provided at a position at a side sill-side end of the cross member and overlapping the reinforcement member. The fragile portion is selected from a cutout, a bead, and a hole. The reinforcement member is a seat mounting bracket, and the fragile portion is on a vehicle-width-direction outer side of a seat mounting surface of the seat mounting bracket.
    Type: Application
    Filed: August 31, 2020
    Publication date: March 11, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Keisuke EBISUMOTO, Daisuke TSUJI, Akiko NAKAMOTO, Daisuke IMAMURA
  • Publication number: 20210061370
    Abstract: A front vehicle-body structure for appropriately dispersing a collision load includes a floor panel; a side sill; a floor frame extending in a front-rear direction on a vehicle-width-direction inner side of the side sill; and a first cross member connecting the side sill and the floor frame to each other in the vehicle width direction. The side sill has a raised wall and an upper wall portion positioned on the vehicle-width-direction inner side in a cross-section orthogonally intersecting with the front-rear direction and extending in an up-down direction, a corner extending in the front-rear direction is formed between the raised wall and the upper wall portion, and a first joint member and a corner reinforcement member that reinforce the raised wall and the corner are provided at a position to which the first cross member is connected in the front-rear direction on an inner side of the side sill.
    Type: Application
    Filed: August 27, 2020
    Publication date: March 4, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Keisuke EBISUMOTO, Tadashi YAMAZAKI, Manabu TATSUDA, Ippei KURODA
  • Publication number: 20210061366
    Abstract: A front vehicle-body structure includes a front wheel including a wheel; and a side sill that extends in a front-rear direction on a rear side of the front wheel and has side sill inner and outer portions positioned on vehicle-width-direction inner and outer sides, respectively. Vehicle-width-direction end portions of the inner and outer portions are joined at a joined portion formed by the vehicle-width-direction end portions abutting against each other. The inner portion has a higher buckling strength in the front-rear direction than the outer portion. The joined portion has a second joined portion extending inclined to the vehicle-width-direction outer side toward a rear side, and a first joined portion bent from the second joined portion, extending to a front side, and positioned on a front-end portion of the side sill closer to the vehicle-width-direction inner side than a center line of the wheel in the vehicle width direction.
    Type: Application
    Filed: August 25, 2020
    Publication date: March 4, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Keisuke EBISUMOTO, Takeshi NAKAMURA, Hirotaka NATSUME, Yuki KATAOKA, Manabu TATSUDA, Ippei KURODA, Satoshi NAKAMURA
  • Publication number: 20210061365
    Abstract: A front vehicle-body structure includes a floor panel; a side sill; a floor frame extending in a front-rear direction on a vehicle-width-direction inner side of the side sill; a first cross member connecting a front portion of the side sill to the floor frame in a vehicle width direction; and a second cross member connecting the side sill and floor frame in the vehicle width direction on a rear side of the first cross member. The floor panel has a quadrilateral closed region surrounded by the side sill, the floor frame, and the cross members, on a periphery of the closed region, and the closed region has a bead linearly extending in a direction intersecting with a virtual line connecting front and rear portions on vehicle-width-direction outer and inner sides, respectively, of the closed region to each other at an angle of 45 degrees or more in plan view.
    Type: Application
    Filed: August 24, 2020
    Publication date: March 4, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Keisuke EBISUMOTO, Ippei KURODA, Syunsuke MINO
  • Patent number: 10814745
    Abstract: A lower vehicle body structure is provided, which includes a vehicle body floor having a bottom surface part, a floor tunnel bulging upwardly from the bottom surface part of the vehicle body floor and extending in vehicle front-and-rear directions, a power transmission mechanism disposed inside the floor tunnel, a mount member supporting the power transmission mechanism from below, and seat rails disposed on the vehicle body floor and slidably supporting seats from below. The mount member and the seat rails are jointly fastened to the vehicle body floor.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: October 27, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Hirotaka Natsume, Hidenori Matsuoka, Keisuke Ebisumoto
  • Patent number: 10793191
    Abstract: A lower vehicle body structure includes a vehicle body floor having a bottom surface part, a floor tunnel bulging upwardly from the bottom surface part and extending in vehicle front-and-rear directions, side sills extending in the front-and-rear directions, hinge pillars extending upwardly from the side sills, first frames, lowered parts and second frames. Each first frame extends in the front-and-rear directions between the floor tunnel and a side sill. Each lowered part is provided to the bottom surface part between a first frame and a side sill so as to be lowered below a part where the floor and the side sills are joined. Each second frame extends to a first frame, obliquely rearwardly and inwardly from a side sill along an upper surface of the bottom surface part, and forms in a part including a lowered part a closed cross-section between the bottom surface part and a second frame.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: October 6, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Hirotaka Natsume, Hidenori Matsuoka, Keisuke Ebisumoto
  • Publication number: 20200047818
    Abstract: A lower vehicle-body structure allows miniaturization of an undercover and prevents an increase in minimum ground clearance. In the lower vehicle-body structure, a vehicle body floor includes step-up portions connected to a floor tunnel on opposite sides of the floor tunnel in a vehicle width direction at least in regions where first and second cross members are disposed on the vehicle body floor. The lower vehicle-body structure includes a mount member that faces the floor tunnel and connects the step-up portions on the opposite sides of the floor tunnel, and includes first and second undercovers that cover a lower side of the mount member so as to be continuous with a bottom surface of the vehicle body floor on outer sides of the step-up portions in the vehicle width direction.
    Type: Application
    Filed: August 7, 2019
    Publication date: February 13, 2020
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Keisuke EBISUMOTO, Hidenori MATSUOKA, Hirotaka NATSUME, Yuki IKAWA, Naohiko KASAKI, Yosuke MORIKAWA
  • Publication number: 20190382054
    Abstract: A lower vehicle-body structure comprises a vehicle floor comprising a bottom face portion and a floor tunnel which protrudes upwardly and extends in a vehicle longitudinal direction, a pair of right-and-left floor cross members extending in a vehicle width direction on both sides of the floor tunnel, and a connecting member provided to extend in the vehicle width direction at a position which overlaps the floor cross members in the vehicle longitudinal direction and be fixed to at least one of the vehicle floor and the floor cross members at plural fixation positions. These plural fixation positions are located at plural different levels in a range of a height of the floor cross members.
    Type: Application
    Filed: June 13, 2019
    Publication date: December 19, 2019
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Hirotaka NATSUME, Kazuhiro KAGEYAMA, Hiroaki SUUMEN, Yuki KUWANO, Tsuyoshi IWATA, Keisuke EBISUMOTO, Hidenori MATSUOKA
  • Publication number: 20190382053
    Abstract: A lower vehicle-body structure comprises a vehicle floor comprising a bottom face portion and a floor tunnel, a pair of right-and-left first floor cross members extending in a vehicle width direction and provided on both sides of the floor tunnel, a pair of right-and-left second floor cross members extending in the vehicle width direction and provided on both sides of the floor tunnel, the second floor cross members being spaced rearwardly from the first floor cross members, a first connecting member provided to extend in the vehicle width direction at a position overlapping the first floor cross members in the vehicle longitudinal direction, and a second connecting member provided to extend in the vehicle width direction at a position overlapping the second floor cross members in the vehicle longitudinal direction.
    Type: Application
    Filed: June 10, 2019
    Publication date: December 19, 2019
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Hirotaka NATSUME, Kazuhiro KAGEYAMA, Keisuke EBISUMOTO, Hidenori MATSUOKA
  • Publication number: 20190382052
    Abstract: A lower vehicle-body structure of the present invention comprises a vehicle floor, a first floor cross member extending in a vehicle width direction, a second floor cross member extending in the vehicle width direction, the second floor cross member being spaced, in a vehicle longitudinal direction, apart from the first floor cross member, a side sill extending in the vehicle longitudinal direction and provided at an end portion, in the vehicle width direction, of the vehicle floor, a floor frame extending in the vehicle longitudinal direction and provided on an inward side, in the vehicle width direction, of the side sill, and attaching members for attaching a seat to a vehicle body. The attaching members are fixed to the side sill, the first floor cross member, and/or the second floor cross member.
    Type: Application
    Filed: June 10, 2019
    Publication date: December 19, 2019
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Hirotaka NATSUME, Kazuhiro KAGEYAMA, Keisuke EBISUMOTO, Hidenori MATSUOKA
  • Publication number: 20190217742
    Abstract: A lower vehicle body structure is provided, which includes a vehicle body floor having a bottom surface part, a floor tunnel bulging upwardly from the bottom surface part of the vehicle body floor and extending in vehicle front-and-rear directions, a power transmission mechanism disposed inside the floor tunnel, a mount member supporting the power transmission mechanism from below, and seat rails disposed on the vehicle body floor and slidably supporting seats from below. The mount member and the seat rails are jointly fastened to the vehicle body floor.
    Type: Application
    Filed: January 14, 2019
    Publication date: July 18, 2019
    Inventors: Hirotaka Natsume, Hidenori Matsuoka, Keisuke Ebisumoto
  • Publication number: 20190217891
    Abstract: A lower vehicle body structure includes a vehicle body floor having a bottom surface part, a floor tunnel bulging upwardly from the bottom surface part and extending in vehicle front-and-rear directions, side sills extending in the front-and-rear directions, hinge pillars extending upwardly from the side sills, first frames, lowered parts and second frames. Each first frame extends in the front-and-rear directions between the floor tunnel and a side sill. Each lowered part is provided to the bottom surface part between a first frame and a side sill so as to be lowered below a part where the floor and the side sills are joined. Each second frame extends to a first frame, obliquely rearwardly and inwardly from a side sill along an upper surface of the bottom surface part, and forms in a part including a lowered part a closed cross-section between the bottom surface part and a second frame.
    Type: Application
    Filed: January 14, 2019
    Publication date: July 18, 2019
    Inventors: Hirotaka Natsume, Hidenori Matsuoka, Keisuke Ebisumoto
  • Publication number: 20190202286
    Abstract: In a vehicle in which a power transmission mechanism in a floor tunnel is supported by a mount member, it is possible to achieve compatibility between suppression of deformation of the floor tunnel and reliable support of the mount member while achieving weight reduction of the vehicle body and simplification of the vehicle body structure. The mount member that supports the power transmission mechanism arranged in the floor tunnel from below is fixed at a predetermined fixed position with respect to at least one of the vehicle body floor and the floor cross member, and the fixed position is arranged to overlap with the floor cross member in the vehicle longitudinal direction, is arranged outside of the floor tunnel in a vehicle width direction, and is arranged upward of the bottom surface part of the vehicle body floor in a vehicle vertical direction.
    Type: Application
    Filed: December 26, 2018
    Publication date: July 4, 2019
    Inventors: Hirotaka Natsume, Hidenori Matsuoka, Keisuke Ebisumoto, Tsuyoshi Iwata, Hiroaki Suumen, Yuki Kuwano