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    • 4. 发明授权
    • Pressure relief valve
    • 减压阀
    • US06622752B2
    • 2003-09-23
    • US09866170
    • 2001-05-25
    • Takeo KushidaEtsuro HozumiAkinori YamazakiKazumasa KasaharaHideya Kikuchi
    • Takeo KushidaEtsuro HozumiAkinori YamazakiKazumasa KasaharaHideya Kikuchi
    • F16K1504
    • F16K17/0406Y10T137/7923Y10T137/7928
    • The present invention provides a pressure relief valve, which achieves a reliable sealed structure in a valve holder 31 without the valve holder 31 jutting far out from a common rail, assures stability of operation of a valve spring 11 in a valve holder 31, and is capable of being manufactured at low cost and can be made compact. A first invention relates to a pressure relief valve, which focuses on making the low-pressure portion side end portion of a valve holder 31 a closed structure, and which has a valve spring 11 that is housed inside the valve holder 31; spring seats 34, 35 on which a valve spring 11 is seated; a valve seat 32 that is mounted to the valve holder 31; and a valve body 9, which is lifted from the valve seat 32 by fluid pressure, this pressure relief valve being characterized in that there is formed a closed end portion 36, which makes the low-pressure portion side end portion 31B of the valve holder 31 a closed state, and, in addition, is constituted so as to enable a valve spring 11 to be seated between the inner wall surface of closed end portion 36 and a spring seat 34, 35. A second invention focuses on making the spring seats 34, 35 of valve spring 11 a cup shape, and is characterized in that spring seats 34, 35 are housed in a slidable condition inside a valve holder 31 as cup-shaped spring seats 34, 35.
    • 本发明提供了一种压力释放阀,其在阀保持器31中实现了可靠的密封结构,而没有突出远离共轨的阀保持器31,确保阀弹簧11在阀保持器31中的操作的稳定性,并且是 能够以低成本制造并且可以制造得紧凑。 第一发明涉及一种压力释放阀,该压力释放阀集中在使阀座31的低压部侧端部形成为封闭结构,并具有容纳在阀保持架31内的阀弹簧11; 弹簧座34,35安置阀弹簧11; 安装在阀座31上的阀座32; 该阀体9通过流体压力从阀座32提升,其特征在于形成有封闭端部36,该封闭端部36使阀座的低压部侧端部31B 31是关闭状态,另外,构成为使得阀弹簧11能够安置在封闭端部36的内壁面与弹簧座34,35之间。第二个发明集中在使弹簧座 34,35是阀形弹簧11,其特征在于,作为杯形弹簧座34,35,弹簧座34,35以可滑动状态容纳在阀保持架31内。