Rubber hose

Abstract

A rubber hose includes an inner rubber layer including a hollow part, an first braided layer formed on the inner rubber layer by braiding a plurality of first yarn materials, a middle rubber layer formed on the first braided layer, a second braided layer formed on the middle rubber layer by braiding a plurality of second yarn materials, and an outer rubber layer formed on the second braided layer. The first braided layer is formed by braiding the plurality of first yarn materials including a vinylon fiber made by a dry process such that the braided first yarn materials includes a braid formed in a three-over, three-under pattern. The second braided layer is formed by braiding the plurality of second yarn materials including a vinylon fiber made by a wet process such that the braided second yarn materials includes a braid formed in a two-over, two-under pattern.

What is claimed is: 
     
         1 . A rubber hose, comprising:
 an inner rubber layer comprising a hollow part;   a first braided layer formed on an outer periphery of the inner rubber layer by braiding a plurality of first yarn materials;   a middle rubber layer formed on an outer periphery of the first braided layer;   a second braided layer formed on an outer periphery of the middle rubber layer by braiding a plurality of second yarn materials; and   an outer rubber layer formed on an outer periphery of the second braided layer,   wherein the first braided layer is formed by braiding the plurality of first yarn materials comprising a vinylon fiber made by a dry process such that the braided first yarn materials comprises a braid formed in a three-over, three-under pattern, and   wherein the second braided layer is formed by braiding the plurality of second yarn materials comprising a vinylon fiber made by a wet process such that the braided second yarn materials comprises a braid formed in a two-over, two-under pattern.   
     
     
         2 . The rubber hose according to  claim 1 , wherein the first yarn materials and the second yarn materials comprise a bundled yarn with two or three wound yarns. 
     
     
         3 . The rubber hose according to  claim 1 , wherein the inner rubber layer and the outer rubber layer comprise EPDM.