| 摘要 |
A brake hose (10) includes two reinforcing layers (14,18) in a rubber base. The brake hose (10) comprises an inner tube rubber layer (12) having a flow path (11) for flowing fluid, a lower yarn layer (14) formed by braiding first yarns (15) around the inner tube rubber layer (12) and an upper yarn layer (18) formed by braiding second yarns (19) around the lower yarn layer (14) and a cover rubber layer (20) covering the upper yarn layer (18). A lower yarn layer duty LD given by equation (1) has a value of 50-65%, <DF NUM="(1)">LD (%) = (LPR/PRP) x 100 </DF> where LRP denotes an inner pressure at which a brake hose without the upper yarn layer (18) and the cover (20) would burst, and PRP denotes an inner pressure at which the brake hose (10) burst. <IMAGE>
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