公开(公告)号：US20200071863A1

公开(公告)日：2020-03-05

申请号：US16537501

申请日：2019-08-09

Applicant: MAZDA MOTOR CORPORATION ,  MIZUNO TECHNICS CORPORATION

Inventor： Kohya NAKAGAWA ,  Kiyoshi FUJIWARA ,  Kazuhisa TO ,  Chikara TANAKA ,  Takahiro ATSUMI ,  Hiroki ASHIDA

IPC: D04C1/06 ,  D04C1/04

Abstract: Provided is a fiber reinforced plastic member made by a braiding technique to obtain high rigidity and superior vibration damping performance under a bending load. A reinforcing member made of carbon fiber reinforced plastic resin extends in a specific direction along an axis of the reinforcing member and includes a carbon fiber braided structure. The carbon fiber braided structure has a structure in which a plurality of axial yarns, a plurality of first braid yarns, and a plurality of second braid yarns are braided. A plurality of first braid yarns are wound to intersect the axis at a first braid angle. A plurality of second braid yarns are wound to intersect the axis at a second braid angle. The first braid yarns and the second braid yarns intersect each other. The reinforcing member has a region approximately in the longitudinal middle where the first braid angle and the second braid angle of the first braid yarns and the second braid yarns take values larger than in other region regarding the longitudinal direction.

公开(公告)号：US20240165891A1

公开(公告)日：2024-05-23

申请号：US18551501

申请日：2022-02-14

Applicant: MIZUNO TECHNICS CORPORATION ,  MAZDA MOTOR CORPORATION

Inventor： Takeshi SAITO ,  Makoto HIROSE ,  Takumi KASHIMA ,  Hiroki YANO ,  Chikara TANAKA ,  Tomohito OKUYAMA ,  Taei SHIBAHARA ,  Masaki MOTOKI

IPC: B29C65/00 ,  B29C35/02 ,  B29C35/04 ,  B32B5/12

CPC classification number: B29C66/71 ,  B29C35/0288 ,  B29C35/049 ,  B32B5/12

Abstract: A tubular body (1) made of a fiber-reinforced plastic and used as a structural material of a vehicle includes corners (4) extending along an axis of the tubular body (1) on an outer circumferential surface thereof. The tubular body (1) is a tubular laminate that is formed by laminating a fabric layer (12) formed by laminating fabric materials and unidirectional material layers (11, 13). Each fabric material includes a fabric in which reinforcing fibers are woven and a plastic with which the fabric is impregnated. Each unidirectional material layer (11, 13) includes reinforcing fibers oriented in one direction and a plastic with which the reinforcing fibers are impregnated. The reinforcing fibers of each unidirectional material layer (11, 13) are oriented along the axis of the tubular laminate. The unidirectional material layers (11, 13) include an outer unidirectional material layer (13) laminated on an outer circumferential surface of the fabric layer (12), and an inner unidirectional material layer (11) laminated on an inner circumferential surface of the fabric layer.

公开(公告)号：US20220169313A1

公开(公告)日：2022-06-02

申请号：US17432998

申请日：2020-02-07

Applicant: MAZDA MOTOR CORPORATION

Inventor： Tomohito OKUYAMA ,  Ryuji NONAKA ,  Junji KISHIMOTO ,  Toshimine MORINO ,  Kazuhisa TO ,  Chikara TANAKA ,  Shin SASAKI

IPC: B62D25/06 ,  B62D29/04

Abstract: A vehicle roof structure is provided capable of maintaining side collision performance of a vehicle even without a roof reinforcing member. The vehicle roof structure includes an annular frame that is joined to a circumferential edge of a roof panel (which includes an outer panel and an inner panel), and supports the roof panel. The annular frame has a higher rigidity than the roof panel, is arranged in an opening of a roof, and is joined to a pair of roof side rails, a front header, and a rear header.