Sliding component
AssigneeEagle Industry Co., Ltd.
InventorsGai YAMAGUCHI, Ryosuke UCHIYAMA, Takahiro TSUKAMOTO, Yuta NEGISHI
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Abstract
A sliding component capable of exerting a sufficient foreign matter discharge effect both when the sliding component is rotating at high speed and low speed is provided. At least one sliding surface is provided with a first dynamic pressure generation groove which communicates with a leakage side space and a second dynamic pressure generation groove of which a terminating end position on a sealed fluid side is located on the sealed fluid side in relation to a terminating end position of the first dynamic pressure generation groove on the sealed fluid side.
Claims13
A sliding component comprising a pair of sliding rings having sliding surfaces which are configured to rotate relative to each other to partition a sealed fluid side space and a leakage side space,
- wherein at least one of the sliding surfaces is provided with first dynamic pressure generation grooves each of which is configured to communicate with the leakage side space and second dynamic pressure generation grooves each of which has a terminating end position on a sealed fluid side, the terminating end portion being located on the sealed fluid side in relation to a terminating end position of the first dynamic pressure generation groove on the sealed fluid side,
- wherein each of the second dynamic pressure generation grooves has an extension portion configured to protrude toward the sealed fluid side in relation to the terminating end portion of the first dynamic pressure generation groove, and
- wherein a first dynamic pressure generating region which is constituted by a plurality of minute recesses not communicating with the sealed fluid side space and the leakage side space is formed on the sealed fluid side between the extension portions of the second dynamic pressure generation grooves adjacent to each other in a circumferential direction.
Dependencies are inferred from the claim text.