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1.发明公开
公开(公告)号：EP1479876A1
公开(公告)日：2004-11-24
申请号：EP04012261.6
申请日：2004-05-24
申请人： NTN CORPORATION
发明人： Yamamoto, Ken , Maeno, Eiji
CPC分类号： F01L1/22 , F01L2103/00 , F01L2105/00
摘要： In an arm type valve gear in which a lash adjuster (20) is mounted between an arm (1) pivoted by the rotation of a cam (7) and a valve stem (8), it is aimed to reduce the axial length of the lash adjuster (20) and to suppress wear at the contact portion with the valve stem. An engaging hole (14) is formed in an arm (1) pivoted by the rotation of a cam (7) at a position corresponding to the top end face of a valve stem (8). A lash adjuster (20) received in the engaging hole (14) includes a nut member (21), an adjuster screw (22) in threaded engagement with the nut member (21), an elastic body (23) biasing the adjuster screw (22) toward the valve stem (8), and a ball joint (24) to reduce the axial length of the lash adjuster. Further, by bringing the bottom end face of the ball joint (24) into surface contact with the top end face of the valve stem, wear at the contact portion is suppressed.
摘要翻译： 在其中间隙调节器（20）安装在通过凸轮（7）的旋转枢转的臂（1）和阀杆（8）之间的臂式阀齿轮中，旨在减小轴向长度 间隙调节器（20），并且抑制与阀杆的接触部分的磨损。 在与阀杆（8）的顶端面对应的位置由凸轮（7）的旋转枢转的臂（1）中形成有接合孔（14）。 容纳在接合孔（14）中的间隙调节器（20）包括螺母构件（21），与螺母构件（21）螺纹接合的调节螺钉（22），弹簧体（23），偏置调节螺钉 22）朝向阀杆（8）和球形接头（24），以减小间隙调节器的轴向长度。 此外，通过使球接头（24）的底端面与阀杆的顶端面面接触，抑制了接触部的磨损。
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公开(公告)号：EP1445431A1
公开(公告)日：2004-08-11
申请号：EP04002964.7
申请日：2004-02-10
CPC分类号： F01L1/143 , F01L1/22 , F01L2101/00
摘要： In a lash adjuster (A) of a valve gear which employs a serration-shaped thread mechanism, the formation of tribochemical reactive film is suppressed by using as the materials for its adjuster screw (15) and nut member (13) or the materials for their thread surfaces such materials that even if FM oil (friction modifier oil: motor oil containing organic molybdenum) is used, the friction coefficient will not extremely fall. The nut member is provided on the underside of an end plate (12) of a lifter body (11). The adjuster screw (15) is threadedly engaged in a threaded hole (14) of the nut member (13). The adjuster screw is biased by a return spring (16). The female threads of the threaded hole and the male threads of the adjuster screw are serration shaped. One or both of the nut member and the adjuster screw, or the pressured thread surfaces of one or both of them are formed of a material that will not react with oil additives of FM oil to suppress the formation of tribochemical reactive film, thereby stabilizing the operation of the lash adjuster.
摘要翻译： 在使用锯齿形螺纹机构的阀齿轮的间隙调节器（A）中，通过使用作为其调节螺钉（15）和螺母构件（13）的材料或用于 它们的螺纹表面即使使用FM油（摩擦改进剂油：含有机钼的机油），摩擦系数也不会极大地下降。 螺母构件设置在升降机主体（11）的端板（12）的下侧。 调节螺钉（15）螺纹接合在螺母构件（13）的螺纹孔（14）中。 调节螺丝被回位弹簧（16）偏压。 螺纹孔的内螺纹和调节螺丝的外螺纹是锯齿形的。 螺母构件和调节螺钉中的一个或两个或其一个或两个的加压螺纹表面由不与FM油的油添加剂反应的材料形成，以抑制摩擦化学反应膜的形成，由此稳定 间隙调节器的操作。
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公开(公告)号：EP1526254A3
公开(公告)日：2010-02-24
申请号：EP04025221.5
申请日：2004-10-22
申请人： NTN Corporation
发明人： Maeno, Eiji , Yamamoto, Ken
摘要： A lash adjuster (A) in a valve actuator includes a lifter body (11) having an end plate (12) having its top surface in contact with a cam (1) and formed with a threaded hole (15) in its bottom surface. An adjuster screw (16) is inserted in the threaded hole (15) with its external thread (16a) in engagement with the internal thread (15a) of the threaded hole (15). An elastic member (17) is mounted in the threaded hole (15) over the adjuster screw (16) to bias the adjuster screw (16) axially downward. Both of the threads (15a,16a) have a sawtooth-shaped section with its pressure flank having a greater flank angle than its clearance flank. One of the pressure flanks is formed with a satin-finished rugged surface which is covered by a hard film which is non-reactive with a low-friction oil. With this arrangement, even after the threads have become worn, the friction coefficient between the thread surfaces is kept substantially constant.
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公开(公告)号：EP1445431B1
公开(公告)日：2006-04-26
申请号：EP04002964.7
申请日：2004-02-10
CPC分类号： F01L1/143 , F01L1/22 , F01L2101/00
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公开(公告)号：EP1526254A2
公开(公告)日：2005-04-27
申请号：EP04025221.5
申请日：2004-10-22
申请人： NTN CORPORATION
发明人： Maeno, Eiji , Yamamoto, Ken
IPC分类号： F01L1/20
摘要： A lash adjuster (A) in a valve actuator includes a lifter body (11) having an end plate (12) having its top surface in contact with a cam (1) and formed with a threaded hole (15) in its bottom surface. An adjuster screw (16) is inserted in the threaded hole (15) with its external thread (16a) in engagement with the internal thread (15a) of the threaded hole (15). An elastic member (17) is mounted in the threaded hole (15) over the adjuster screw (16) to bias the adjuster screw (16) axially downward. Both of the threads (15a,16a) have a sawtooth-shaped section with its pressure flank having a greater flank angle than its clearance flank. One of the pressure flanks is formed with a satin-finished rugged surface which is covered by a hard film which is non-reactive with a low-friction oil. With this arrangement, even after the threads have become worn, the friction coefficient between the thread surfaces is kept substantially constant.
摘要翻译： 阀门致动器中的间隙调节器（A）包括具有其顶表面与凸轮（1）接触并在其底表面上形成有螺纹孔（15）的端板（12）的升降器本体（11）。 调节螺钉（16）插入螺纹孔（15）中，其外螺纹（16a）与螺纹孔（15）的内螺纹（15a）啮合。 弹性构件（17）安装在螺纹孔（15）上方调节螺钉（16）上，以将调节螺钉（16）轴向向下偏压。 两个螺纹（15a，16a）都具有锯齿形部分，其压力侧面具有比其间隙侧面更大的侧面角。 其中一个压力侧面形成有缎面抛光的粗糙表面，该表面由与低摩擦油不反应的硬膜覆盖。 通过这种布置，即使在螺纹已经磨损之后，螺纹表面之间的摩擦系数保持基本上恒定。
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