公开(公告)号：US20220297768A1

公开(公告)日：2022-09-22

申请号：US17568702

申请日：2022-01-04

Applicant: MAZDA MOTOR CORPORATION ,  NIPPON STEEL Chemical & Material Co., Ltd.

Inventor： Chikara KAWAMURA ,  Yuki KODAMA ,  Kenji NISHIDA ,  Tetsuya SUGIYAMA ,  Koichi HATTORI

IPC: B62D29/04

Abstract: Provided is a frame which is made of a fiber reinforced composite and where a bending strength and a vibration damping capability are compatible. The frame which is made of a fiber reinforced composite includes: a compressive wall part where a compressive stress occurs in a longitudinal direction of the frame when the frame receives a bending load in a normal direction perpendicularly intersecting the longitudinal direction; a side wall part extending in the normal direction and defining one of the corners with the compressive wall part; and a tension wall part which is away from the compressive wall part and extends in the longitudinal direction, and where a tensile stress occurs in the longitudinal direction when the frame receives the bending load. The tension wall part has a loss coefficient which is larger than a loss coefficient of the compressive wall part by 0.005 or more.

公开(公告)号：US20220274653A1

公开(公告)日：2022-09-01

申请号：US17590821

申请日：2022-02-02

Applicant: Mazda Motor Corporation

Inventor： Kenji NISHIDA ,  Chikara KAWAMURA

IPC: B62D25/08 ,  B62D25/14 ,  B62D29/04

Abstract: A front body structure of a vehicle includes a dash member that extends in a vehicle width direction and separates a vehicle interior from an engine room, a pair of left and right front side frames that extend from left and right end portions of the dash member, and a pair of left and right suspension towers that are fixed to the pair of front side frames and support the upper portions of dampers of a suspension device. A first coupling member couples the dash member to the suspension towers. The first coupling member has a reinforced layer portion made of fiber reinforced plastic in which fibers are impregnated with a synthetic resin material. The fibers of the reinforced layer portion are oriented so that more fibers extend in a longitudinal direction than extend in directions other than the longitudinal direction.

公开(公告)号：US20220274652A1

公开(公告)日：2022-09-01

申请号：US17590819

申请日：2022-02-02

Applicant: Mazda Motor Corporation

Inventor： Kenji NISHIDA ,  Chikara KAWAMURA

IPC: B62D25/08 ,  B62D29/04

Abstract: A body structure of a vehicle includes a coupling member made of fiber reinforced plastic including fibers impregnated with synthetic resin and a pair of rear fixing members that have a bending rigidity higher than the coupling member and fix both end portions in the longitudinal direction of the coupling member to a vehicle body. Boundary portions between the pair of fixing members and the coupling member are formed in both end portions in the longitudinal direction. A distance between the boundary portions on the rear side is different from that between the boundary portions on the front side that extend along neutral axes defined by the lines of intersection between the neutral plane of bending moments of the coupling member and the lateral cross sections of the coupling member when a bending load is input through the pair of rear fixing members to the coupling member.

公开(公告)号：US20230332633A1

公开(公告)日：2023-10-19

申请号：US18179938

申请日：2023-03-07

Applicant: MAZDA MOTOR CORPORATION

Inventor： Kenji NISHIDA ,  Kenichi YAMAMOTO ,  Chikara KAWAMURA

IPC: F16B5/02 ,  F16B35/00

CPC classification number: F16B5/0208 ,  F16B35/00

Abstract: An outer member, an inner member, and an inside fixing member overlap each other and fastened together by a fastening member. The outer member is made of fiber reinforced resin, and fibers contained in the fiber reinforced resin-made outer member are arranged in a direction crossing the above-described overlapping direction. A bolt of the fastening member comprises a conical (truncated cone-shaped) middle portion which is poisoned between a head portion and a shaft portion. In a case where the outer member and the bolt are offset from each other in a radial direction of a through hole of the outer member, the conical middle portion partially contacts an edge portion of the through hole and compress a contacted portion of the outer member in the overlapping direction.

公开(公告)号：US20180022396A1

公开(公告)日：2018-01-25

申请号：US15598649

申请日：2017-05-18

Applicant: MAZDA MOTOR CORPORATION

Inventor： Kenji NISHIDA ,  Kohya NAKAGAWA

IPC: B62D29/04 ,  B62D21/02 ,  B62D25/20

CPC classification number: B62D29/041 ,  B60Y2306/09 ,  B62D21/02 ,  B62D25/20 ,  B62D29/046

Abstract: There are provided a floor panel, a tunnel portion which is provided to protrude at the floor panel, a pair of right-and-left tunnel side frames, a pair of right-and-left floor frames, and a band plate which is made from carbon fiber reinforced plastic, an inward end portion which being connected to the tunnel side frame and an outward end portion of which being connected to the floor frame, wherein the band plate portion includes a first displacement following portion which is configured to be displaced, following displacement of the tunnel side frame and a second displacement following portion which is configured to be displaced, following displacement of the floor frame, and the first displacement following portion and the second displacement following portion are configured to be asymmetrical relatively to a longitudinal-directional axis.