US 12,385,567 B2
Sliding component
Iwa Ou, Tokyo (JP); Tadatsugu Imura, Tokyo (JP); Hiroshi Suzuki, Tokyo (JP); and Yuichiro Tokunaga, Tokyo (JP)
Assigned to EAGLE INDUSTRY CO., LTD., Tokyo (JP)
Filed by Eagle Industry Co., Ltd., Tokyo (JP)
Filed on Jul. 2, 2024, as Appl. No. 18/762,527.
Application 18/762,527 is a division of application No. 17/425,679, granted, now 12,049,962, previously published as PCT/JP2020/003646, filed on Jan. 31, 2020.
Claims priority of application No. 2019-017874 (JP), filed on Feb. 4, 2019.
Prior Publication US 2025/0003496 A1, Jan. 2, 2025
This patent is subject to a terminal disclaimer.
Int. Cl. F16J 15/34 (2006.01); F16J 15/3256 (2016.01)
CPC F16J 15/3412 (2013.01) [F16J 15/3256 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A sliding component that has an annular shape and is disposed in a place where relative rotation is performed in a rotary machine, comprising a plurality of dynamic pressure generating mechanisms,
wherein the plurality of dynamic pressure generating mechanisms are provided in a sliding surface of the sliding component, each of the dynamic pressure generating mechanisms including a deep groove portion that communicates with an outer diameter side or an inner diameter side, and at least one shallow groove portion that communicates with the deep groove portion and extends in a circumferential direction, the shallow groove portion is shallower than the deep groove portion,
the deep groove portion is provided with a trap portion that suppresses leakage of a sealed fluid in the deep groove portion,
the deep groove portion is defined by a pair of side wall surfaces opposed to each other in the circumferential direction, and
the trap portion has at least one protruded trap piece which is formed in a quadrilateral shape in a plan view and protruded in a radial direction from one of the side wall surfaces of the deep groove portion.