Fiber structure, pressure container, and method of producing fiber structure

Patent metadata

Field	Value
Publication number	US-11092287-B2
Application number	US-201816606634-A
Country	US
Kind code	B2
Filing date	Apr 20, 2018
Priority date	Apr 20, 2017
Publication date	Aug 17, 2021
Grant date	Aug 17, 2021

Abstract

A fiber structure that includes a liner, and a fiber reinforcement base material formed of a fabric. The fiber reinforcement base material externally covers a body portion and a dome-shaped portion of the liner, and includes first yarns and second yarns. The first yarns are arranged such that a direction in which a yarn main axis of each of the first yarns in the body portion and the dome-shaped portion proceeds is a circumferential direction of the liner. The second yarns are arranged such that a direction in which a yarn main axis of each of the second yarns in the body portion proceeds is an axial direction of the body portion and that a direction in which a yarn main axis of a portion of each of the second yarns arranged in the dome-shaped portion proceeds is an axial direction of the dome-shaped portion.

First claim

The invention claimed is:

1. A fiber structure, comprising:
a liner including:
a body portion having a cylindrical shape;
a dome-shaped portion being continuous with at least one end of the body portion in an axial direction thereof; and
a mouthpiece having a shape protruding from the dome-shaped portion in the axial direction of the body portion; and

a fiber reinforcement base material formed of a fabric, the fiber reinforcement base material externally and entirely covering the body portion and the dome-shaped portion of the liner, wherein
the fiber reinforcement base material includes:
first yarns arranged in such a way that a direction in which a yarn main axis of each of the first yarns in the body portion and the dome-shaped portion proceeds is a circumferential direction of the liner; and
second yarns forming the fabric with the first yarns, the second yarns being arranged in such a way that a direction in which a yarn main axis of each of the second yarns in the body portion proceeds is the axial direction of the body portion and that a direction in which a yarn main axis of a portion of each of the second yarns arranged in the dome-shaped portion proceeds is an axial direction of the dome-shaped portion.

2. The fiber structure according to claim 1 , wherein the fabric is a multi-layered fabric comprising:
a first yarn layer in which the first yarns are arranged;
a second yarn layer in which the second yarns are arranged; and
a binder yarn binding the first yarn layer and the second yarn layer.

3. A pressure container, comprising:
a fiber structure impregnated with a matrix resin, the fiber structure including:
a fiber reinforcement base material formed of a fabric, the fiber reinforcement base material externally covering a liner, wherein

the fiber structure is the fiber structure according to claim 1 impregnated with a matrix resin.

4. A method of producing a fiber structure, the fiber structure comprising:
a liner including:
a body portion having a cylindrical shape;
a dome-shaped portion being continuous with at least one end of the body portion in an axial direction thereof; and
a mouthpiece having a shape protruding from the dome-shaped portion in the axial direction of the body portion; and

a fiber reinforcement base material formed of a fabric, the fiber reinforcement base material externally covering the body portion and the dome-shaped portion of the liner;
warp yarns arranged in such a way that a direction in which a yarn main axis of each of the warp yarns in the body portion and the dome-shaped portion proceeds is a circumferential direction of the liner; and
weft yarns forming the fabric with the warp yarns, wherein the method of producing the fiber structure comprising:
arranging the warp yarns along the axial direction of the body portion and the dome-shaped portion of the liner;
inserting each of the weft yarns into a shed formed between the warp yarns adjacent to each other in the axial direction of the liner;
pressing the inserted weft yarn toward the liner by beating with a reed to weave the fabric out of the warp yarns and the weft yarns; and
winding the woven fabric around the liner by rotating the liner around a center axis of the liner.

5. The fiber structure according to claim 1 , wherein the second yarns are arranged in such a way that an end of each of the second yarns in the body portion is continuous with each of the second yarns arranged in the dome-shaped portion in the axial direction of the liner.

Assignees

• Toyota Jidoshokki Kk

Inventors

• Kamiya Ryuta
• Suzuki Hiroyuki

Classifications

• F17C2203/0665

  radially wound · CPC title

• F17C2203/0673

  Polymers · CPC title

• F17C2221/012

  Hydrogen · CPC title

• B65H54/16

  forming bottle bobbin packages · CPC title

• F17C1/06 Primary

  built-up from wound-on bands or filamentary material, e.g. wires · CPC title