| 摘要 |
<p>PURPOSE:To improve the durability of the sealing member of a poppet valve by preventing the deformation of the sealing member to the utmost even when hydraulic pressure in a hydraulic chamber acts on the sealing member of the poppet valve in a relief valve to open and close the relief port of a master cylinder. CONSTITUTION:The cap body 40 of a poppet valve 26 is provided with a shallow circular recess 42 opened on its end face, an annular groove 43 opened on the peripheral edge of the recess 42, the first anchor hole 44 reaching from the peripheral face of the cap body 40 to the annular groove 43, and the second anchor hole 45 crossing a core part 4Oa enclosed by the annular groove 43. A sealing member 41 is filled up in the above parts and baked, and an annular sealing protrusive stripe 41a protruding from the end face of the cap body 40 is thereby formed on the sealing member 41.</p> |
