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公开(公告)号：EP3604866A1
公开(公告)日：2020-02-05
申请号：EP18771357.3
申请日：2018-01-10
IPC分类号： F16J9/16
摘要： A piston ring (1) which is resinous includes an annular main body portion (2) having an inner peripheral surface (2c) and an outer peripheral surface (2d) facing each other and a pair of side surfaces (2a, 2b) interconnecting the inner peripheral surface (2c) and the outer peripheral surface (2d) and a joint portion 3 formed in the main body portion (2). The joint portion (3) has a step shape when viewed from at least one of the pair of side surfaces (2a, 2b) and the outer peripheral surface (2d). The outer peripheral surface (2d) has a tapered surface having an outer diameter increasing from a side of one side surface (2a) of the pair of side surfaces of the main body portion (2) toward a side of the other side surface (2b).
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公开(公告)号：EP3282149B1
公开(公告)日：2019-11-20
申请号：EP16776664.1
申请日：2016-04-08
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公开(公告)号：EP3282149A1
公开(公告)日：2018-02-14
申请号：EP16776664.1
申请日：2016-04-08
摘要： To provide a combined oil control ring comprising a pair of upper and lower side rails and an axially corrugated spacer expander having upper and lower portions for automobile engines, which is capable of keeping an excellent oil-controlling function without sticking between a spacer expander and side rails even in a long period of engine operation, the upper and lower portions of the spacer expander have tabs pushing inner peripheral surfaces of the side rails, projections supporting the side rails, and intermediate portions between the tabs and the projections; and each intermediate portion opposing the side rail has a center-raised bottom having a center-raised shape when viewed along a substantially circumferential direction center-raised shape and a radial direction.
摘要翻译： 为了提供一种组合的油控制环，其包括一对上下侧导轨和一个具有用于汽车发动机的上部和下部的轴向波纹间隔膨胀机，其能够保持优异的控油功能而不会粘在间隔膨胀机和侧部之间 即使在长时间的发动机操作中，间隔扩展器的上部和下部也具有推压侧轨的内周表面的突片，支撑侧轨的突起以及突片和突起之间的中间部分; 并且在沿着大致圆周方向的中央隆起形状和径向方向观察时，与所述侧轨相对的每个中间部分具有中央隆起底部，所述中央隆起底部具有中央隆起形状。
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公开(公告)号：EP3499095A1
公开(公告)日：2019-06-19
申请号：EP17841340.7
申请日：2017-07-25
发明人： SHIMIZU Hiroshi , NAKAMURA Daisuke
摘要： In a joint section 3 of a piston ring 1, on a side surface 2a of a body 2, a first protrusion portion 13 and a first reception portion 14 are provided, on a side surface 2b of the body 2, a second protrusion portion 15 and a second reception portion 16 are provided, on an inner circumferential surface 2c side of the body 2, a first male portion 21 and a first female portion 22 are provided, and, on an outer circumferential surface 2d side of the body 2, a second male portion 23 and a second female portion 24 are provided. The first male portion 21 has an inclined surface 21b which faces the outer circumferential surface 2d side and is inclined with respect to a mating surface 21a with respect to the first female portion 22 so that a front end of the first male portion 21 tapers, and the second male portion 23 has an inclined surface 23b which faces the inner circumferential surface 2c side and is inclined with respect to a mating surface 23a with respect to the second female portion 24 so that a front end of the second male portion 23 tapers.
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公开(公告)号：EP3282148A1
公开(公告)日：2018-02-14
申请号：EP16776663.3
申请日：2016-04-08
发明人： SHIMIZU Hiroshi , YABUNE Hiroyuki
摘要： To provide a combined oil control ring comprising a pair of upper and lower side rails and an axially corrugated spacer expander having upper and lower portions for automobile engines, which is capable of keeping an excellent oil-controlling function without sticking between a spacer expander and side rails even in a long period of engine operation, the upper and lower portions of the spacer expander have tabs pushing inner peripheral surfaces of the side rails, projections supporting the side rails, and intermediate portions between the tabs and the projections; each intermediate portion opposing the side rail has at least one groove extending in a substantially circumferential direction is recessed when viewed along a radial direction.
摘要翻译： 为了提供一种组合的油控制环，其包括一对上下侧导轨和一个具有用于汽车发动机的上部和下部的轴向波纹间隔膨胀机，其能够保持优异的控油功能而不会粘在间隔膨胀机和侧部之间 即使在长时间的发动机操作中，间隔扩展器的上部和下部也具有推压侧轨的内周表面的突片，支撑侧轨的突起以及突片和突起之间的中间部分; 与侧轨相对的每个中间部分具有至少一个在大致圆周方向上延伸的凹槽，当沿着径向方向观看时凹入。
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