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公开(公告)号：US6148780A
公开(公告)日：2000-11-21
申请号：US282738
申请日：1999-03-31
CPC分类号： F01L1/053 , F01L1/18 , F01L1/24 , F01L1/2411 , F01L2001/187
摘要： A hydraulic lash adjuster for disposition between a rocker arm and a valve stem of an internal combustion engine comprises a body having an axially extending neck depending from a lower end thereof. An enlarged head portion extends from the terminal end of the neck and has a semispherical lower surface. A foot assembly includes a disk shaped foot with an upper surface, a lower surface and a cylindrical sidewall defining an outer perimeter. The upper surface has a socket configured to receive the enlarged head. The foot assembly further includes an inverted cup shaped retainer having a cylindrical wall and radial leaves extending inwardly from the upper end of the cylindrical wall, defining a central opening. The axially extending neck extends through the central opening and the opening has a diameter smaller than the enlarged head. The cylindrical wall of the retainer is parallel to the cylindrical sidewall of the foot and is sized to define a parallel frictional force therebetween sufficient to maintain engagement of the foot and retainer. The retainer operates to prevent disassembly of the body and the foot assembly.
摘要翻译： 用于在内燃机的摇臂和阀杆之间配置的液压间隙调节器包括具有从其下端悬垂的轴向延伸的颈部的主体。 扩大的头部从颈部的终端延伸并且具有半球形的下表面。 脚组件包括具有上表面的盘形脚，下表面和限定外周的圆柱形侧壁。 上表面具有构造成容纳扩大头部的插座。 脚组件还包括倒杯形保持器，其具有圆柱形壁和径向叶片，其从圆柱形壁的上端向内延伸，限定中心开口。 轴向延伸的颈部延伸穿过中心开口，并且开口的直径小于扩大的头部。 保持器的圆柱形壁平行于脚的圆柱形侧壁并且其尺寸被设计成在其间限定足够的平行摩擦力，以保持脚和保持器的接合。 保持器操作以防止主体和脚组件的拆卸。
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公开(公告)号：US06209499B1
公开(公告)日：2001-04-03
申请号：US09399463
申请日：1999-09-20
IPC分类号： F01L1245
CPC分类号： F01L1/25 , F01L1/18 , F01L1/2411 , F01L1/245
摘要： A C-clip retainer is provided in a groove of a piston, such as for an engine hydraulic valve lash adjuster, to allow installation and removably retain the piston in a cylinder of an associated assembly. The groove has a novel shape including an inner surface that is angled relative to a longitudinal axis of the piston to provide a larger groove diameter at a first axial end surface and a smaller diameter at an opposite second axial end surface of the groove. Upon installation, the clip is urged into the smaller diameter, allowing easier installation, but upon removal the clip is expanded by forcing it to the larger diameter, thereby increasing the retention force on the piston. The first axial end surface may also be formed with a back angle that reduces forces of the associated cylinder edge that tend to compress the retainer into the groove, thus further increasing the piston retention force.
摘要翻译： C形夹保持器设置在活塞的凹槽中，例如用于发动机液压阀间隙调节器，以允许安装并将活塞可拆卸地保持在相关组件的气缸中。 凹槽具有新颖的形状，其包括相对于活塞的纵向轴线成角度的内表面，以在凹槽的相对的第二轴向端表面处在第一轴向端面处提供更大的凹槽直径和较小的直径。 在安装时，夹子被推入更小的直径，允许更容易的安装，但是在移除时，夹子通过迫使其扩大到更大的直径而膨胀，从而增加了活塞上的保持力。 第一轴向端面还可以形成有后角，其减小倾向于将保持器压入槽中的相关联的气缸边缘的力，从而进一步增加活塞保持力。
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