Seal ring

Japanese Patent JP6186413

B2

[Object] To provide a seal ring capable of both reducing a friction loss and reducing oil leakage. [Solving Means] A seal ring includes: an inner circumferential surface; an outer circumferential surface orthogonal to the inner circumferential surface; side surfaces orthogonal to the inner circumferential surface and the outer circumferential surface; and a plurality of pockets provided, spaced apart from one another in one of the side surfaces. The plurality of pockets each have a symmetrical shape in a circumferential direction and are opened on a side of the inner circumferential surface and closed on a side of the outer circumferential surface. The plurality of pockets each include circumferential end portions that are provided in end portions in the circumferential direction and are R-surfaces each having a convex shape connected to the side surface, a bottom portion provided in a central region in the circumferential direction, and inclined portions each extending between each of the circumferential end portions and the bottom portion. The inclined portions each include at least one ridge portion, a first inclined portion extending between the bottom portion and the ridge portion and forming a first angle with respect to the side surface, and a second inclined portion extending between the circumferential end portion and the ridge portion and forming a second angle smaller than the first angle with respect to the side surface.

Park Nansen

JP2015203472A

August 23, 2017

October 15, 2015

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Riken Co., Ltd.

F16J15/18

WO2015002143A1
WO2013094657A1
WO2011105513A1
WO2004090390A1
WO2011162283A1
WO2013094654A1

Junichi Omori
Ori Akira
Masayoshi Sekine
Teppei Nakamura
Ayako Kaneko
Nozomi Yoshida
Shintaro Kanayama

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