High-pressure gas tank

Patent metadata

Field	Value
Publication number	US-2025237351-A1
Application number	US-202418911254-A
Country	US
Kind code	A1
Filing date	Oct 10, 2024
Priority date	Jan 19, 2024
Publication date	Jul 24, 2025
Grant date	—

Abstract

A high-pressure gas tank includes: a tank body including a body portion and a dome portion disposed on one side of the body portion in the axial direction; a cap having a shaft portion extending from a central portion of the dome portion along the axial direction and a through-hole through which the gas flows through the shaft portion; and a protective member that includes a protective portion covering the dome portion around the cap and made of resin and a connecting portion integrated with the protective portion, having an annular shape or a tubular shape into which the shaft portion of the cap is inserted, and made of metal. The cap includes a first threaded portion on an outer periphery of the shaft portion, and the protective member includes a second threaded portion screwed to the first threaded portion on an inner periphery of the connecting portion.

First claim

What is claimed is:

1 . A high-pressure gas tank comprising:
a tank body that includes a body portion and a dome portion disposed on one side of the body portion in an axial direction; a cap that includes a shaft portion extending along the axial direction from a central portion of the dome portion and a through-hole penetrating through the shaft portion to allow gas to be distributed through the shaft portion; and a protective member that includes a protective portion covering the dome portion around the cap and made of resin and a connecting portion integrated with the protective portion, having an annular shape or a tubular shape into which the shaft portion of the cap is inserted, and made of metal, wherein the cap includes a first threaded portion at an outer periphery of the shaft portion, and the protective member includes a second threaded portion that is screwed to the first threaded portion at an inner periphery of the connecting portion.

2 . The high-pressure gas tank according to claim 1 , wherein the shaft portion includes a first movement suppressing member that suppresses movement of the protective member toward the one side.

3 . The high-pressure gas tank according to claim 2 , wherein the first movement suppressing member includes a third threaded portion that is screwed to the first threaded portion.

4 . The high-pressure gas tank according to claim 1 , wherein:
the dome portion includes a fiber-reinforced resin layer; and the shaft portion includes a second movement suppressing member that suppresses approach of the protective member to the fiber-reinforced resin layer.

5 . The high-pressure gas tank according to claim 1 , wherein:
a fire-proof layer that is held by the protective member is included between the protective member and a surface of the dome portion; and in the protective member, the protective portion and the connecting portion are integrated with an adhesive that is softened by heating.

Assignees

• Toyota Motor Co Ltd

Inventors

• Fujie Yuki
• Ishikawa Takeshi

Classifications

• F17C2223/036

  Very high pressure (>80 bar) · CPC title

• F17C2209/23

  Manufacturing of particular parts or at special locations · CPC title

• F17C2209/22

  Assembling processes · CPC title

• F17C2209/227

  by adhesive means · CPC title

• F17C2205/0302

  Fittings, valves, filters, or components in connection with the gas storage device · CPC title