公开(公告)号：US20170307086A1

公开(公告)日：2017-10-26

申请号：US15526112

申请日：2015-11-06

申请人： NOK CORPORATION

发明人： Shinya OMOTO ,  Toru NAKASHIMA ,  Hiroki MATSUI ,  Yusuke KAMIYA

IPC分类号： F16J15/3204 ,  F16J15/447 ,  F16F15/126

CPC分类号： F16J15/3204 ,  F16F15/126 ,  F16F15/165 ,  F16F2230/30 ,  F16J15/164 ,  F16J15/3232 ,  F16J15/3264 ,  F16J15/447

摘要： A sealing structure that allows for formation of a side lip, as well as a labyrinth structure between an oil seal and a torsional vibration damper, even when a reinforcing ring has a short inward flange part. The sealing body 120 includes a side lip 124 extending from near a distal end of an inward flange part 112 of the reinforcing ring 110 radially inward and further toward an air side (A) than a dust lip 122 to a position not as far as the outer circumferential surface of a tubular part 210. The tubular part 210 includes a small-diameter part 211 on which the dust lip 122 slides, and a large-diameter part 212 on the air side (A). The large-diameter part 212 has a tapered surface 212a formed on an outer circumferential surface thereof that reduces in diameter toward the air side (A). An annular gap S is formed between this tapered surface 212a and an inner circumferential surface of the side lip 124.

公开(公告)号：US20190063546A1

公开(公告)日：2019-02-28

申请号：US16171792

申请日：2018-10-26

申请人： NOK CORPORATION

发明人： Toru NAKASHIMA ,  Hiroyuki UEKUSA

IPC分类号： F16F15/126 ,  F16J15/447

摘要： A sealing structure includes a hub, an outer-periphery-side mass body, an outer-periphery-side damper elastic body, an inner-periphery-side mass body, and an inner-periphery-side damper elastic body. The hub is attached to one end of a rotary shaft of an object to be attached. The oil seal includes a seal lip in an annular shape and a side lip in an annular shape and is oriented to the inner-periphery-side mass body, is attached in a through hole in the object to be attached, and hermetically seals a void between the hub and the object to be attached. The inner-periphery-side mass body forms at least a part of a pocket which is composed of a recessed portion in an annular shape, and the side lip forms a labyrinth seal which is composed of a gap in an annular shape between the side lip and the pocket.

公开(公告)号：US20180274626A1

公开(公告)日：2018-09-27

申请号：US15995308

申请日：2018-06-01

申请人： NOK CORPORATION

发明人： Akihiro KOMYO ,  Yusuke KAMIYA ,  Shinya OMOTO ,  Toru NAKASHIMA ,  Shota TOMA

IPC分类号： F16F15/126 ,  F16J15/3204 ,  F16J15/447

CPC分类号： F16F15/126 ,  F16C33/72 ,  F16C33/805 ,  F16C2326/02 ,  F16J15/3204 ,  F16J15/3232 ,  F16J15/447

摘要： To provide a sealing structure with an annular pocket and a sealing apparatus that can efficiently reduce exposure of a seal lip of the sealing apparatus to foreign matter entering from the outside. In a sealing structure (1) with a torsional damper and an oil seal, a hub pocket (30) has an outer circumferential surface (31) in an annular shape centered about an axis x that extends along the axis x and is formed in an outer shell part (33) that is opposed to a shaft member on an outer periphery side, a dust discharging hole (36s) or a dust discharging groove (36sa) connected to the hub pocket (30) is formed in the outer shell part (33), and the dust discharging hole (36s) or the dust discharging groove (36sa) is inclined at a predetermined angle in such a manner that a discharge opening (36sout) is directed in an opposite direction to a rotational direction of the shaft member.

公开(公告)号：US20190113080A1

公开(公告)日：2019-04-18

申请号：US16194716

申请日：2018-11-19

申请人： NOK CORPORATION

发明人： Yusuke KAMIYA ,  Hiroki MATSUI ,  Shinya OMOTO ,  Toru NAKASHIMA ,  Hirotaka MIZUTA

IPC分类号： F16C33/78 ,  F16C19/18 ,  F16C33/80 ,  F16J15/3232 ,  F16J15/447

摘要： A sealing structure with an annular pocket and a sealing device includes an annular pocket and a sealing device. The pocket is provided in a slinger, and the sealing device is attached to a housing of a differential device. The slinger is arranged on an output shaft of the differential device. A recessed part of the pocket is defined by an inner peripheral tubular portion, an outer peripheral tubular portion and a bottom portion of the slinger. The outer peripheral surface of the pocket is formed in the outer peripheral tubular portion of the slinger. The outer peripheral surface of the pocket increases in diameter toward the outside in an axis direction. A side lip of the sealing device extends in the outward direction, and an annular gap is formed between the side lip and the pocket.

公开(公告)号：US20180223949A1

公开(公告)日：2018-08-09

申请号：US15504478

申请日：2015-08-07

申请人： NOK CORPORATION

发明人： Yusuke KAMIYA ,  Hiroki MATSUI ,  Shinya OMOTO ,  Toru NAKASHIMA

IPC分类号： F16F15/16 ,  F16F15/126 ,  F16J15/3236 ,  F16J15/3264

CPC分类号： F16F15/165 ,  F16F15/126 ,  F16F2230/30 ,  F16J15/32 ,  F16J15/3236 ,  F16J15/3264

摘要： A sealing structure allows for formation of a labyrinth structure between an oil seal and a torsional vibration damper even when the oil seal does not include a side lip. The oil seal 100 includes an oil lip 121 provided such as to be slidable on an outer circumferential surface of a tubular part 210, and a dust lip 122 provided further on an air side (A) than the oil lip 121 and slidable on the outer circumferential surface of the tubular part 210. An annular member 250 is further provided, which is fixed to the outer circumferential surface of the tubular part 210 further on the air side (A) than the dust lip 122 and covering an outer circumferential surface of the dust lip 122 such that there is a gap between the annular member 250 itself and the outer circumferential surface of the dust lip 122.

公开(公告)号：US20170234398A1

公开(公告)日：2017-08-17

申请号：US15504533

申请日：2015-08-07

申请人： NOK CORPORATION

发明人： Yusuke KAMIYA ,  Hiroki MATSUI ,  Shinya OMOTO ,  Toru NAKASHIMA

IPC分类号： F16F15/126 ,  F16J15/3208 ,  F16J15/3232

CPC分类号： F16F15/126 ,  F16J15/32 ,  F16J15/3208 ,  F16J15/3232

摘要： A sealing structure allows for formation of a side lip, as well as a labyrinth structure between an oil seal and a torsional vibration damper, even when a reinforcing ring has a short inward flange part. The sealing body 120 includes a side lip 124 extending from near a distal end of an inward flange part 112 radially inward and further toward an air side (A) than a dust lip 122 to a position not as far as the outer circumferential surface of a tubular part 210. An annular member 250 is further provided, which is fixed to the outer circumferential surface of the tubular part 210 further on the air side (A) than the side lip 124 and covering an outer circumferential surface of the side lip 124 such that there is a gap between the annular member 250 itself and the outer circumferential surface of the side lip 124.