US 11,892,081 B2
Sliding component
Hiroki Inoue, Tokyo (JP); Yuta Negishi, Tokyo (JP); Minori Onuma, Tokyo (JP); Iwa Ou, Tokyo (JP); Tadatsugu Imura, Tokyo (JP); and Hiroshi Suzuki, Tokyo (JP)
Assigned to EAGLE INDUSTRY CO., LTD.
Appl. No. 17/628,158
Filed by Eagle Industry Co., Ltd., Tokyo (JP)
PCT Filed Jul. 10, 2020, PCT No. PCT/JP2020/027005
§ 371(c)(1), (2) Date Jan. 18, 2022,
PCT Pub. No. WO2021/020074, PCT Pub. Date Feb. 4, 2021.
Claims priority of application No. 2019-137952 (JP), filed on Jul. 26, 2019.
Prior Publication US 2022/0275828 A1, Sep. 1, 2022
Int. Cl. F16J 15/34 (2006.01); F16C 17/02 (2006.01)
CPC F16J 15/342 (2013.01) [F16J 15/3416 (2013.01); F16J 15/3424 (2013.01); F16C 17/026 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A sliding component comprising a pair of sliding members, one of the sliding members having a sliding surface provided with a plurality of dynamic pressure generation grooves extending from a leakage side to a sealed fluid side,
wherein the sliding surface is provided with a recessed portion extending in a circumferential direction and opened to the leakage side,
wherein the recessed portion communicates with the dynamic pressure generation grooves,
wherein a bottom surface of the recessed portion is formed to be equal in depth to or higher than a bottom surface of each of the dynamic pressure generation grooves at a boundary between the recessed portion and each of the dynamic pressure generation grooves,
wherein the recessed portion has a circumferential width larger than circumferential lengths of the dynamic pressure generation grooves, and
wherein each of the dynamic pressure generation grooves radially overlap with a groove portion of the recessed portion which is protruded in the circumferential direction from each of the dynamic pressure generation grooves.