Opening and closing valve for high-pressure gas
AssigneeHonda Motor Co., Ltd.
InventorsTaneaki MIURA, Hiroyasu OZAKI, Koichi TAKAKU, Koichi KATO
Life of this patent
Estimating the term…
Abstract
A pilot valve is provided with a conical first contact surface, and a pilot valve seat is provided with an annular second contact surface of which an initial contact portion with respect to the first contact surface has a circular-arc cross-section. The first contact surface is formed of a resin with elasticity, and the second contact surface is formed of metal. When a pressure-contact load is small, the first contact surface and the second contact surface come into line-contact with each other. When a pressure-contact load increases, the first contact surface and the second contact surface come into plane-contact with each other.
Claims6
An opening and closing valve for high-pressure gas that opens and closes a passageway by causing a valve body and a valve seat, which are coaxially disposed, to come into contact with or separate from each other,
- wherein the valve body includes a conical first contact surface, and the valve seat includes an annular second contact surface of which an initial contact portion with respect to the first contact surface has a circular-arc cross-section, and
- wherein one of the first contact surface and the second contact surface is formed of a resin, and the other thereof is formed of metal.
An opening and closing valve for high-pressure gas that opens and closes a passageway by causing a valve body and a valve seat, which are coaxially disposed, to come into contact with or separate from each other,
- wherein the valve seat includes a conical first contact surface, and the valve body includes an annular second contact surface of which an initial contact portion with respect to the first contact surface has a circular-arc cross-section, and
- wherein one of the first contact surface and the second contact surface is formed of a resin, and the other thereof is formed of metal.
Dependencies are inferred from the claim text.