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1. 发明申请

US20010009319A1 Combined oil ring 失效
标题翻译：组合油环
公开(公告)号：US20010009319A1
公开(公告)日：2001-07-26
申请号：US09748014
申请日：2000-12-27
申请人： Teikoku Piston Ring Co., Ltd.
发明人： Masao Ishida
IPC分类号： F16J009/20
CPC分类号： F16J9/063
摘要： A combined oil ring is comprised of an oil ring and an expander. The cross section of the oil ring is a generally I-shape, and the outer circumferential surfaces of outer rail portions form sliding surfaces to make contact with the cylinder wall surface. The cross section of an expander installation groove formed on the inner circumferential surface of the oil ring is formed in a rectangular shape, and an expander formed of axially corrugated ring-shaped plate material is mounted in the expander installation groove. The expander is formed by forming a rectangular cross sectional plate material in a corrugated shape in the direction of plate thickness and further forming in a ring shape. The expander installation groove of the oil ring is not limited to a rectangular shaped cross section. For example, the cross section of the expander installation groove may have a trapezoidal shape widening towards the inner circumference, and the cross section of the plate material forming the expander may have a generally diamond-shaped cross section.
摘要翻译：组合油环由油环和膨胀机构成。油环的截面为大致I字状，外侧轨道部的外周面形成与气缸壁面接触的滑动面。形成在油环的内周面上的膨胀机安装槽的横截面形成为矩形，并且由轴向波纹状的环状板材形成的膨胀机安装在膨胀机安装槽中。膨胀机通过在板厚方向上形成波纹形状的矩形截面板材料并进一步形成为环形而形成。油环的膨胀机安装槽不限于矩形截面。例如，扩张器安装槽的横截面可以具有朝向内周加宽的梯形形状，并且形成扩张器的板材的横截面可以具有大致菱形横截面。

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