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1. 发明公开

EP3779244A1 SPACER EXPANDER AND OIL CONTROL RING INCLUDING SAME 有权
公开(公告)号：EP3779244A1
公开(公告)日：2021-02-17
申请号：EP19781732.3
申请日：2019-03-29
申请人： Kabushiki Kaisha Riken
发明人： SHIMIZU, Hiroshi , KOIZUMI, Satoshi , SUDOU, Kenichi , TOKUNAGA, Shigeru , TAKEZAWA, Yuichiro
IPC分类号： F16J9/06 , F02F5/00 , F16J9/26
摘要： An oil control ring according the present disclosure includes a pair of side rails, and a spacer expander disposed between the pair of side rails, in which the spacer expander includes a plurality of lug parts with which inner circumferential surfaces of the side rails are in contact, and a plurality of rail facing parts provided adjacent to the lug parts and facing side surfaces of the side rails, and all or at least a part of the plurality of lug parts satisfy a condition represented by a following inequality (1). W / H ≥ 1.5
In inequality (1), W indicates a width (unit: mm) of each of the lug parts at a position 0.05 mm away from a highest position of the lug part in a direction of each of the rail facing parts, and H indicates a height difference (unit: mm) between a highest position of a region on the rail facing part adjacent to the lug part and the highest position of the lug part.

2. 发明公开

EP3270012A1 SIDE RAIL 有权
标题翻译：侧轨
公开(公告)号：EP3270012A1
公开(公告)日：2018-01-17
申请号：EP16761290.2
申请日：2016-03-03
申请人： Kabushiki Kaisha Riken
发明人： TAKEZAWA, Yuichiro , MIYAJIMA, Tatsuya
IPC分类号： F16J9/20 , F02F5/00 , F16J9/06 , F16J9/26
摘要： A side rail (1) is formed in a sprit ring shape with an opening (10) and to be mounted on a space expander (2) in an annular shape to constitute, together with the space expander (2), a multi-piece oil ring (3) used in an internal combustion engine. The side rail (1) includes an outer peripheral surface (14) facing radially outward, an inner peripheral surface (13) facing radially inward, a first axial surface (11) facing a crankcase, a second axial surface (12) facing a combustion chamber and parallel to the first axial surface (11), and a protrusion (20) formed on the outer peripheral surface (14) in a position offset from an intermediate position between the first axial surface (11) and the second axial surface (12) toward the first axial surface (11) and protruding radially outward from the outer peripheral surface (14).
摘要翻译：侧轨（1）形成为具有开口（10）的环状形状并且以环形安装在空间膨胀机（2）上以与空间膨胀机（2）一起构成多件式用于内燃机的油环（3）。所述侧轨（1）具有：径向外侧的外周面（14）;径向内侧的内周面（13）;面向曲轴箱的第一轴面（11）;面向燃烧的第二轴面（12）（11）与第一轴向面（11）之间的中间位置偏移的位置处形成的突起（20），所述突起（20）形成在外周面（14）上，）朝向所述第一轴向表面（11）并且从所述外周表面（14）径向向外突出。

3. 发明授权

EP3270012B1 SIDE RAIL 有权
公开(公告)号：EP3270012B1
公开(公告)日：2020-08-05
申请号：EP16761290.2
申请日：2016-03-03
申请人： Kabushiki Kaisha Riken
发明人： TAKEZAWA, Yuichiro , MIYAJIMA, Tatsuya
IPC分类号： F16J9/20 , F02F5/00 , F16J9/06 , F16J9/26

4. 发明公开

EP3677764A1 SIDE RAIL 有权
公开(公告)号：EP3677764A1
公开(公告)日：2020-07-08
申请号：EP18865205.1
申请日：2018-09-25
申请人： Kabushiki Kaisha Riken
发明人： IWATA, Yasuhiro , SHIMIZU, Hiroshi , TAKEZAWA, Yuichiro
IPC分类号： F02F5/00 , F16J9/20
摘要： Provided is a side rail 1 having an outer peripheral surface 14 facing radially outward, an inner peripheral surface 13 facing radially inward, a first axial side surface 11 facing one side in an axial direction, and a second axial side surface 12 facing the other side in the axial direction and parallel to the first axial side surface 11, in which, a beveled portion 30 is provided between the outer peripheral surface 14 and the second axial side surface 12, the beveled portion 30 is formed in a tapered surface having a diameter gradually decreasing from a position on the outer peripheral surface 14 at 0.05 mm or more away from the first axial side surface toward the second axial side surface in the axial direction; a tapered surface 30a is provided between a first tapered surface portion 30a1 with an angle of 10° or more to the axial direction and a second tapered surface portion 30a2 provided between the first tapered surface portion 30a1 and the outer peripheral surface 14 and having a smaller angle of inclination to the axial direction than that of the first tapered surface portion.

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