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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：US5642694A
公开(公告)日：1997-07-01
申请号：US658901
申请日：1996-05-24
IPC分类号： F01L1/24
CPC分类号： F01L1/2405 , Y10T29/49304
摘要： A hydraulic lash adjuster for an internal combustion engine, and a method of its construction is disclosed. The lash adjuster has a cylindrical follower body in which a tubular plunger is slidingly disposed. The plunger cooperates with the follower body to define a high pressure chamber therebetween which is supplied with fluid through a valved port. A low pressure chamber which operates to supply fluid to the high pressure chamber through the valved opening, is defined by an axial passage through the plunger. Fluid flows into and out of the low pressure chamber through a port in the wall of the plunger. Intermediate of the port and the valved opening is a radially inwardly extending annular shelf which is integral formed with the axial passage of the plunger using a mechanical shaving step to plow a portion of the plunger material from the wall of the axially extending passage. The annular shelf operates as a baffle to prevent loss of fluid from the low pressure chamber when the hydraulic lash adjuster is installed at an angle from vertical.
摘要翻译： 公开了一种用于内燃机的液压间隙调节器及其结构的方法。 间隙调节器具有圆柱形从动体，其中管状柱塞滑动地设置。 柱塞与从动体配合以在其间限定高压腔室，其通过阀门端口供应流体。 用于通过阀门开口向高压室供应流体的低压室由穿过柱塞的轴向通道限定。 流体通过柱塞壁中的端口流入和流出低压室。 端口和阀门开口的中间件是径向向内延伸的环形搁架，其与柱塞的轴向通道一体地形成，其使用机械刮削步骤从柱塞材料的轴向延伸通道的壁上犁下一部分。 当液压间隙调节器与垂直方向成一定角度安装时，环形搁架用作挡板，以防止来自低压室的流体损失。
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公开(公告)号：US06440237B1
公开(公告)日：2002-08-27
申请号：US09577174
申请日：2000-05-23
IPC分类号： C21D800
CPC分类号： B23P15/003 , F16C33/62 , F16C33/64 , Y10S148/906 , Y10S384/912
摘要： A process for forming a roller bearing comprising the steps of providing a cylindrical slug that comprises at least 0.7 weight percent carbon and up to 1.6 weight percent of at least one alloying element. The slug has lateral and side surfaces. A centered indentation is formed in each side surface. A circular chamfer surface is formed at the intersection of each side and each lateral surface, thereby producing an upsetting slug. The upsetting slug is cold formed, thereby deepening the centered indentations and forming a blank. The blank has a web separating the deepened indentations and end surfaces and chamfer surfaces that are substantially at net shape for the roller bearing. The web is removed from the blank, thereby forming a pierced blank having a through hole with an inner surface. The inner and lateral surfaces of the pierced blank are finished to the specified inner and outer diameters for the roller bearing.
摘要翻译： 一种用于形成滚子轴承的方法，包括以下步骤：提供包括至少0.7重量％的碳和至多1.6重量％的至少一种合金元素的圆柱形块状物。 子弹具有侧面和侧面。 在每个侧面形成中心的凹痕。 在每个侧面和每个侧面的交叉处形成圆形倒角表面，从而产生镦锻块。 镦粗的块塞冷成型，从而加深了中心的压痕并形成了空白。 坯料具有将加深的凹口和端面以及用于滚子轴承基本上为净形状的倒角表面的腹板。 从坯料上取下纸幅，从而形成具有内表面的通孔的穿孔毛坯。 穿孔毛坯的内表面和外表面完成滚子轴承的规定的内外径。
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公开(公告)号：US5706773A
公开(公告)日：1998-01-13
申请号：US801614
申请日：1997-02-18
IPC分类号： F01L1/24
CPC分类号： F01L1/2405 , Y10T29/49304
摘要： A hydraulic lash adjuster for an internal combustion engine, and a method of its construction is disclosed. The lash adjuster has a cylindrical follower body in which a tubular plunger is slidingly disposed. The plunger cooperates with the follower body to define a high pressure chamber therebetween which is supplied with fluid through a valved port. A low pressure chamber which operates to supply fluid to the high pressure chamber through the valved opening, is defined by an axial passage through the plunger. Fluid flows into and out of the low pressure chamber through a port in the wall of the plunger. Intermediate of the port and the valved opening is a radially inwardly extending annular shelf which is integral formed with the axial passage of the plunger using a mechanical shaving step to plow a portion of the plunger material from the wall of the axially extending passage. The annular shelf operates as a baffle to prevent loss of fluid from the low pressure chamber when the hydraulic lash adjuster is installed at an angle from vertical.
摘要翻译： 公开了一种用于内燃机的液压间隙调节器及其结构的方法。 间隙调节器具有圆柱形从动体，其中管状柱塞滑动地设置。 柱塞与从动体配合以在其间限定高压腔室，其通过阀门端口供应流体。 用于通过阀门开口向高压室供应流体的低压室由穿过柱塞的轴向通道限定。 流体通过柱塞壁中的端口流入和流出低压室。 端口和阀门开口的中间件是径向向内延伸的环形搁架，其与柱塞的轴向通道一体地形成，其使用机械刮削步骤从柱塞材料的轴向延伸通道的壁上犁下一部分。 当液压间隙调节器与垂直方向成一定角度安装时，环形搁板用作挡板，以防止来自低压室的流体损失。
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