| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a piping hose for a vehicle which can further prevent torsion of the hose.SOLUTION: A piping hose 1 for a vehicle includes a cylindrical inner rubber layer 10, a cylindrical outer rubber layer 50, an intermediate rubber layer 30 arranged between the inner rubber layer 10 and the outer rubber layer 50, an inner reinforcing layer 20 formed by spirally winding a plurality of reinforcing yarns in one direction and sandwiched between the inner rubber layer 10 and the intermediate rubber layer 30, and an outer reinforcing layer 40 formed by spirally winding a plurality of reinforcing yarns in a direction opposite to that of the reinforcing yarns of the inner reinforcing layer 20 and sandwiched between the intermediate rubber layer 30 and the outer rubber layer 50. The reinforcing yarn of the inner reinforcing layer 20 and that of the outer reinforcing layer 40 are of the same kind. The number of the reinforcing yarns of the outer reinforcing layer 40 is larger than that of the inner reinforcing layer 20 by one.</p> |
