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    • 43. 发明授权
    • Drain mechanism and fluid filter including drain mechanism
    • 排水机构和流体过滤器,包括排水机构
    • US08512562B2
    • 2013-08-20
    • US12363998
    • 2009-02-02
    • Nobuhiro OgawaMasahiro Tomita
    • Nobuhiro OgawaMasahiro Tomita
    • B01D35/16
    • B01D35/153B01D35/16
    • A drain mechanism includes: a cap that is attached detachably to a case of a fluid filter and formed with a drain hole, and includes an engaging projecting portion to which an engaging portion of a drain pipe inserted into the drain hole is engaged; and a valve member that is provided in the interior of the cap so as to close the drain hole and displaced in a direction for releasing closure of the drain hole upon contact with a tip end portion of the pipe inserted into the drain hole. The valve member is provided with a holding recess portion for holding the tip end portion of the pipe. A contact portion contacted by the tip end portion of the pipe is provided inside the holding recess portion of the valve member. When a tip end side of the engaging portion of the pipe inserted into the drain hole is in contact with a rear end side of the engaging projecting portion of the cap, an interval between a contact tip end of the engaging portion and the engaging projecting portion and an open end of the holding recess portion of the valve member closing the drain hole is longer than an interval between the contact tip end of the engaging portion and the engaging projecting portion and a tip end of the pipe.
    • 排水机构包括:可拆卸地附接到流体过滤器的壳体并形成有排水孔的盖,并且包括接合突出部分,插入到排水孔中的排水管的接合部分接合到该接合突出部分; 以及阀构件,其设置在所述盖的内部,以便在与插入所述排水孔的所述管的前端部接触时沿着所述排泄孔的闭合方向封闭所述排水孔。 阀构件设置有用于保持管的顶端部的保持凹部。 在阀构件的保持凹部内设置有与管的前端部接触的接触部。 当插入到排水孔中的管的接合部的前端侧与盖的接合突出部的后端侧接触时,接合部的接触前端与接合突出部之间的间隔 闭合排水孔的阀构件的保持凹部的开口端比接合部的接触前端部和接合突出部与管的前端的间隔长。