公开(公告)号：EP2977654A4

公开(公告)日：2016-11-02

申请号：EP14767316

申请日：2014-03-11

申请人： EAGLE IND CO LTD

发明人： TOKUNAGA YUICHIRO ,  ITADANI MASATOSHI ,  SUNAGAWA KAZUMASA

IPC分类号： F16J15/34

CPC分类号： F16C33/748 ,  F16C17/026 ,  F16J15/3412 ,  F16J15/3416 ,  F16J15/342

摘要： While meeting contradictory conditions of sealing and lubrication, a fluid is actively taken into sealing faces, and even in a case where foreign substances and bubbles are taken into the sealing faces, wear, burnout, and the like due to leakage of the sealing faces and friction heat generation are prevented. A positive pressure generation mechanism 10 including a positive pressure generation groove 11 is provided on a high pressure side of one of sealing faces of a pair of sliding parts including annular bodies that relatively slide on each other, a negative pressure generation mechanism 12 including a negative pressure generation groove 13 is provided on a low pressure side, a pressure release groove 14 is provided between the positive pressure generation groove 11 and the negative pressure generation groove 13, and further, a radial groove 15 that provides communication between the positive pressure generation groove 11, the pressure release groove 14 and the negative pressure generation groove 13, and a high pressure fluid side is provided on the sealing face, and the radial groove 15 includes an inlet section 15a that provides communication between an upstream side of the positive pressure generation groove 11 and the pressure release groove 14, and the high pressure fluid side, and an outlet section 15b that provides communication between a downstream side of the negative pressure generation groove 13 and the pressure release groove 14, and the high pressure fluid side, the inlet section 15a and the outlet section 15b are inclined in the directions in which the sections respectively open from the low pressure side toward the high pressure side, and an intersection angle ¸ of both the sections made by a tangent line m on a sealing face end is set to be an obtuse angle.

公开(公告)号：EP2853789A4

公开(公告)日：2016-01-20

申请号：EP13847185

申请日：2013-10-10

申请人： EAGLE IND CO LTD

发明人： TOKUNAGA YUICHIRO

IPC分类号： F16J15/34 ,  F16J15/32

CPC分类号： F16J15/3412 ,  F16J15/3448 ,  F16J15/348

摘要： {Technical Problem} The object is to provide a sliding component that can prevent leakage regardless of the level of differential pressure between the inner periphery and outer periphery of the sealing face by controlling the streak-like flow of fluid due to cavitation that occurs in a dimple or other concaved part formed on the sealing face. {Solution to Problem} The sliding component is characterized in that dimples are provided on one sealing face of a pair of sliding parts that mutually slide relative to each other, and stripe-shaped projections with directionality are provided in a cavitation formation area in each dimple.

摘要翻译： 技术问题本发明的目的是提供一种滑动部件，其可以通过控制由于空穴发生的流体的条纹状流而阻止泄漏，而不管密封面的内周和外周之间的压差水平如何 凹坑或形成在密封面上的其它凹部。 （问题的解决方案）滑动部件的特征在于，在相互相对滑动的一对滑动部的一个密封面上设置有凹部，在每个凹部的空穴形成区域设置有具有方向性的条状突起 。

公开(公告)号：EP3217049A4

公开(公告)日：2018-07-11

申请号：EP15857699

申请日：2015-10-28

申请人： EAGLE IND CO LTD

发明人： ITADANI MASATOSHI ,  SUNAGAWA KAZUMASA ,  TOKUNAGA YUICHIRO ,  INOUE HIDEYUKI ,  HOSOE TAKESHI ,  YAMAKAWA RYOMA ,  NEGISHI YUTA ,  KIRYU KENJI ,  CHIBA KEIICHI ,  YOSHINO AKIRA ,  KUBOTA HIROSHI

IPC分类号： F16J15/34

CPC分类号： F16J15/40 ,  F16J15/34 ,  F16J15/3412 ,  F16J15/342

摘要： Provided is a slide component that can prevent deposit formation on a sealing face as well as promoting circulation of a fluid on sealing faces while fulfilling both conflicting conditions of sealing and lubrication, to maintain the sealing function of the sealing faces for a long period of time. One slide part 5 is provided, on a low-pressure side of a sealing face thereof, with a negative pressure generation mechanism 10 including a negative pressure generation groove 10. The negative pressure generation groove 10a communicates with a high-pressure fluid side and is separated from a low-pressure fluid side by a land portion R. The other slide part 1 is provided, in a sealing face thereof, with at least one interference groove 15 communicating with the high-pressure fluid side for producing pressure variations in a fluid in the negative pressure generation groove 10a. The at least one interference groove 15 has an end 15a on an inside-diameter side extending to a position to radially overlap the negative pressure generation groove 10a.

公开(公告)号：EP3196516A4

公开(公告)日：2018-05-16

申请号：EP15842960

申请日：2015-08-26

申请人： EAGLE IND CO LTD

发明人： ITADANI MASATOSHI ,  SUNAGAWA KAZUMASA ,  TOKUNAGA YUICHIRO ,  INOUE HIDEYUKI ,  HOSOE TAKESHI ,  YAMAKAWA RYOMA ,  NEGISHI YUTA ,  KIRYU KENJI ,  CHIBA KEIICHI ,  YOSHINO AKIRA ,  KUBOTA HIROSHI

IPC分类号： F16J15/34

CPC分类号： F16J15/3404 ,  F16J15/062 ,  F16J15/3412 ,  F16J15/3488

摘要： Provided is a slide component that can prevent deposit formation on a sealing face as well as promoting circulation of a fluid on sealing faces while fulfilling both conflicting conditions of sealing and lubrication, to maintain the sealing function of the sealing faces for a long period of time. The slide component includes a pair of slide parts that relatively slide on each other, one of the slide parts being provided in a sealing face with fluid circulation grooves 10 that communicate with a high-pressure fluid side via an inlet portion and an outlet portion and are separated from a low-pressure fluid side by a land portion, the other of the slide parts being provided in a sealing face with interference grooves 15 that communicate with the high-pressure fluid side and produce pressure variations in a fluid in the fluid circulation grooves 10.

公开(公告)号：EP3163133A1

公开(公告)日：2017-05-03

申请号：EP15811264

申请日：2015-06-25

申请人： EAGLE IND CO LTD

发明人： ITADANI MASATOSHI ,  TOKUNAGA YUICHIRO

IPC分类号： F16J15/34

CPC分类号： F16J15/34 ,  F16J15/40

摘要： To provide a sliding component smoothing fluid movement from a cavitation formation region on the upstream side of dimples formed on a sealing face to a positive pressure generation region on the downstream side. The sliding component is characterized in that: a plurality of dimples 10 are provided independently in the circumferential direction on one sealing face of a pair of sliding components relatively sliding to each other, a cavitation formation region 10a on an upstream side of each dimple 10 is disposed closer to a low-pressure fluid side and a positive pressure generation region 10b on a downstream side of each dimple is disposed closer to a high-pressure fluid side, and an edge 10d on the low-pressure fluid side of the positive pressure generation region 10b is formed into a tapered shape inclined with respect to the rotating direction of the other sealing face toward the high-pressure fluid side from the low-pressure fluid side and is smoothly connected to an edge on the low-pressure fluid side of the cavitation formation region 10a.

摘要翻译： 为了使形成在密封面上的凹坑的上游侧的空穴形成区域与下游侧的正压力产生区域之间的滑动部件平滑化流体移动， 该滑动部件的特征在于：在彼此相对滑动的一对滑动部件的一个密封面上沿圆周方向独立设置有多个凹坑10，在每个凹坑10的上游侧的空化形成区域10a是 配置在靠近低压流体侧的位置，各凹窝的下游侧的正压产生区域10b配置在靠近高压流体侧的位置，正压产生的低压流体侧的边缘10d 区域10b形成为相对于从低压流体侧朝向高压流体侧的另一密封面的旋转方向倾斜的锥形形状，并且平滑地连接至第一区域10b的低压流体侧的边缘 气穴形成区域10a。

公开(公告)号：EP2693089A4

公开(公告)日：2015-05-27

申请号：EP12765069

申请日：2012-02-29

申请人： EAGLE IND CO LTD

发明人： NAKAZONO YUSAKU ,  ITADANI MASATOSHI ,  TOKUNAGA YUICHIRO

IPC分类号： F16J15/32

CPC分类号： F16J15/324 ,  F16J15/3232 ,  F16J15/3244

摘要： A sealing device and a sealing structure in which sliding ability is stabilized are provided. A lip tip of a first seal lip (120) includes a first tapered surface (123a) which expands in diameter toward a sealed fluid side (L) and a second tapered surface (123b) which expands in diameter toward an opposite side (A) of the sealed fluid side, the second tapered surface (123b) is provided with a plurality of screw thread protrusions (or screw thread grooves) (124) which move grease (170) in the axial direction while rotating relative to a rotary shaft (21), and each of the plurality of screw thread protrusions (or screw thread grooves) (124) is disposed so as to move the grease (170) toward the opposite side (A) of the sealed fluid side.

摘要翻译： 提供一种其中滑动能力稳定的密封装置和密封结构。 第一密封唇缘（120）的唇尖包括朝向密封流体侧（L）直径膨胀的第一锥形表面（123a）和朝向相对侧（A）直径膨胀的第二锥形表面（123b） 在第二锥形表面（123b）上设置有多个螺纹突起（或螺纹槽）（124），该螺纹突出部（124）在相对于旋转轴（21）旋转的同时沿轴向移动润滑脂（170） ），并且设置多个螺纹突起（或螺纹槽）（124）中的每一个以使润滑脂（170）朝向密封流体侧的相对侧（A）移动。

公开(公告)号：EP3098486A4

公开(公告)日：2017-11-08

申请号：EP15740299

申请日：2015-01-23

申请人： NOK CORP ,  EAGLE IND CO LTD

发明人： SEKI MASATOSHI ,  HOSOE TAKESHI ,  INOUE HIDEYUKI ,  TOKUNAGA YUICHIRO

IPC分类号： F16J15/18

CPC分类号： F16J15/441 ,  F16J15/164 ,  F16J15/3272

摘要： Provided is a sealing device capable of suppressing leakage of a fluid to be sealed while reducing rotary torque regardless of rotational direction. In a sealing ring (100) slides against a side wall surface on a low pressure side of an annular groove, a dynamic pressure generating groove (120) that includes a first groove (121) having a constant width in a radial direction and extending in a circumferential direction and a second groove (122) extending from a center position of the first groove (121) in the circumferential direction to an inner circumferential surface and guiding a fluid to be sealed into the first groove (121) is provided on a sliding surface side which slides against the side wall surface. The first groove (121) is provided at a position within a sliding region in which the sealing ring slides against the side wall surface.

公开(公告)号：EP2977655A4

公开(公告)日：2016-11-02

申请号：EP14769338

申请日：2014-03-11

申请人： EAGLE IND CO LTD

发明人： ITADANI MASATOSHI ,  TOKUNAGA YUICHIRO

IPC分类号： F16J15/34

CPC分类号： F16J15/3448 ,  F16J15/3412 ,  F16J15/3416 ,  F16J15/342

摘要： A fluid is actively taken into sealing faces and discharged from the sealing faces so as to prevent concentration of sediment causative substances on the sealing faces and hence prevent generation of sediment while preventing leakage of the fluid taken into the sealing faces to a low pressure fluid side. A fluid circulation groove 10 including an inlet section 10a where a fluid comes in from a high pressure fluid side, an outlet section 10b where the fluid goes out to the high pressure fluid side, and a communication section 10c that provides communication between the inlet section 10a and the outlet section 10b is provided in one of sealing faces of a pair of sliding parts that slide on each other. The fluid circulation groove 10 is isolated from a low pressure fluid side by a land section R. At least a sectional area of the groove in the inlet section 10a or the outlet section 10b is set to be different from a sectional area of the groove in the communication section 10c in such a manner that pressure of the fluid flowing through the fluid circulation groove 10 is lowered in the communication section 10c.

公开(公告)号：EP2902677A4

公开(公告)日：2016-05-11

申请号：EP13840285

申请日：2013-09-26

申请人： EAGLE IND CO LTD

发明人： TOKUNAGA YUICHIRO

IPC分类号： F16J15/34

CPC分类号： F16J15/34 ,  F16J15/3412 ,  F16J15/348 ,  F16J15/40

摘要： {Technical Problem} Provide a sliding component that can prevent leakage while also providing lubrication regardless of the level of differential pressure between the inner periphery and outer periphery of the sealing face, by suctioning in the fluid in the cavitation area on the upstream side of the dimple or other concaved part formed on the sealing face and generating positive pressure between the sealing faces on the downstream side of the dimple. {Solution to Problem} The present invention is characterized in that dimples are provided on one sealing face of a pair of sliding parts that mutually slide relative to each other, where the cavitation formation area on the upstream side of each dimple is positioned closer to the low-pressure fluid side and the positive-pressure generation area on the downstream side is positioned closer to the high-pressure fluid side, and the fluid that has been suctioned in the cavitation formation area of each of the above dimples travels in the dimple and is returned to the high-pressure fluid side from the positive-pressure generation area.

摘要翻译： {技术问题}提供一种滑动部件，其可以防止泄漏，同时还可以通过吸入密封面的内周和外周之间的压差水平而在 凹坑或凹陷部分形成在密封面上并在凹坑的下游侧的密封面之间产生正压。 （问题的解决方案）本发明的特征在于，在彼此相对滑动的一对滑动部件的一个密封面上设置有凹坑，其中，每个凹部的上游侧的空化形成区域位于更靠近 低压流体侧，下游侧的正压生成区域更接近高压流体侧，并且在上述凹坑的空穴形成区域中吸入的流体在凹坑中行进， 从正压产生区域返回到高压流体侧。

公开(公告)号：EP2881632A4

公开(公告)日：2016-03-09

申请号：EP13827448

申请日：2013-07-31

申请人： EAGLE IND CO LTD

发明人： ITADANI MASATOSHI ,  TOKUNAGA YUICHIRO

IPC分类号： F16J15/34

CPC分类号： F16J15/3412 ,  F16J15/3424

摘要： {Technical Problem} An object of the present invention is to achieve both sealing and lubrication by preventing cavitation from occurring in the dynamic-pressure generation mechanism and thereby solving the problem of leakage that will otherwise result from such cavitation. {Solution to Problem}The present invention is characterized in that, on the sealing face of one of a pair of sliding parts that slide against each other, extremely shallow grooves constituting a Rayleigh step mechanism are provided in a manner facing the high-pressure fluid side of the sealing face, while deep fluid-introduction grooves for introducing the high-pressure fluid are provided on the upstream side of the extremely shallow grooves in a manner continuing to the high-pressure fluid side.

摘要翻译： 技术问题本发明的目的是通过防止在动压发生机构中发生气蚀而实现密封和润滑，从而解决否则由于这种空化引起的泄漏的问题。 （问题的解决方案）本发明的特征在于，在一对滑动部件之一的密封面上，构成瑞利阶梯机构的非常浅的槽以面对高压流体的方式设置 同时在连续高压流体侧的极浅槽的上游侧设置用于引入高压流体的深流体导入槽。