Hose with metal fitting
A hose with a metal fitting includes a hose, a metal fitting connected to an end portion of the hose, and a sleeve covering at least a portion of the hose and metal fitting. The inside of the hose communicates with the inside of the metal fitting. The hose includes an inner-surface resin layer, a metal-wire reinforced layer, and an outer-surface resin layer. The sleeve includes a first cylindrical portion covering a portion of the metal fitting and a second cylindrical portion directly covering a portion of the hose. The length of the second cylindrical portion is 8 mm or more. The thickness of the second cylindrical portion is 1 mm or more. The hardness of the second cylindrical portion is measured in compliance with JISK6253 by Durometer Type A and is between 70 and 95. The material of the sleeve and the outer-surface resin layer are the same.
1 . A hose with a metal fitting, comprising:
a hose;
the metal fitting including a metal-fitting cylindrical portion to which one end portion of the hose is connected; and
a sleeve covering the hose and the metal-fitting cylindrical portion,
an inside of the hose being communicated with an inside of the metal fitting,
the hose including an inner-surface resin layer, a metal-wire reinforced layer, and an outer-surface resin layer which are lined up in order from an inner side of the hose,
the inner-surface resin layer being formed of a single layer containing fluororesin,
the sleeve including:
a first cylindrical portion covering the metal-fitting cylindrical portion and terminating at the end portion connected to the hose; and
a second cylindrical portion which directly and only covers the hose and which is smaller in diameter than the first cylindrical portion, wherein:
a length of the second cylindrical portion being 8 mm or more,
a thickness of the second cylindrical portion being 1 mm or more,
a hardness of the second cylindrical portion being measured in compliance with JISK6253 by Durometer Type A and being 70 or more and 95 or less,
the second cylindrical portion includes a cylindrical portion and a leaning portion, the leaning portion provided between the first cylindrical portion and the cylindrical portion of the second cylindrical portion,
a diameter of the leaning portion is larger near the first cylindrical portion than near the cylindrical portion of the second cylindrical portion, and
a thickness of the leaning portion is thicker than a thickness of the first cylindrical portion,
a material of the sleeve being thermoplastic elastomer or rubber, and
the material of the sleeve being the same as a material of the outer-surface resin layer.
2 . The hose with the metal fitting according to claim 1 , wherein the thickness of at least a part of the leaning portion is thicker than a thickness of the cylindrical portion of the second cylindrical portion.
3 . The hose with the metal fitting according to claim 1 , wherein the material of the sleeve and the material of the outer-surface resin layer are thermoplastic polyurethane.