Bearing member for valve gear
    3.
    发明授权
    Bearing member for valve gear 有权
    阀门齿轮轴承构件

    公开(公告)号:US09371746B2

    公开(公告)日:2016-06-21

    申请号:US14595585

    申请日:2015-01-13

    Abstract: To provide a bearing member for a valve gear capable of reducing friction. A bearing member (34) for a valve gear (1) includes a cam shaft (20). The cam shaft (20) has: a cam (30) for opening/closing at least one of an intake valve and an exhaust valve; and a plurality of journal parts (36). The bearing member (34) includes: a cam cap (38) supporting the journal part (36) from above, surrounding it; a bearing base part (40) supporting the journal part (36) from below; and a stepped part (46a) provided on an inner peripheral surface of the cam cap (38) facing the journal part (36), overhanging on an inner peripheral side of the inner peripheral surface. An upstream-side end portion (46c) of the stepped part (46a) is positioned more on a downstream side than an upstream-side abutting surface (38a) of the cam cap (38), whereas a downstream-side end portion (46d) of the stepped part (46a) is positioned more on an upstream side than a downstream-side abutting surface (38b) of the cam cap (38).

    Abstract translation: 提供能减少摩擦力的阀门齿轮的轴承部件。 用于阀齿轮(1)的轴承构件(34)包括凸轮轴(20)。 凸轮轴(20)具有:用于打开/关闭进气门和排气门中的至少一个的凸轮(30); 和多个轴颈部件(36)。 所述轴承构件(34)包括:凸轮盖(38),其从上方支撑所述轴颈部(36),围绕所述凸轮盖; 从下方支撑所述轴颈部(36)的轴承座部(40) 以及设置在所述凸轮盖(38)的面向所述轴颈部(36)的内周面上的台阶部(46a),在所述内周面的内周侧突出。 台阶部分(46a)的上游侧端部(46c)位于比凸轮盖(38)的上游侧抵接面(38a)更靠下游侧,而下游侧端部(46d) (46a)的位置比凸轮盖(38)的下游侧抵接面(38b)更靠上游侧。

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