| 主权项 |
1. A sliding component comprising
a positive pressure generating mechanism comprising a positive pressure generating groove provided to a high-pressure side of one of two sliding surfaces that slide relative to each other in a pair of sliding components, and a negative pressure generating mechanism comprising a negative pressure generating groove provided to a low-pressure side, said positive pressure generating groove and negative pressure generating groove being communicated with a high-pressure fluid side and separated from a low-pressure fluid side by a seal surface, wherein the external-peripheral-side positive pressure generating mechanism is formed from a Rayleigh step mechanism, and the internal-peripheral-side negative pressure generating mechanism is formed from a reverse Rayleigh step mechanism, said Rayleigh step mechanism and reverse Rayleigh step mechanism being communicated with the high-pressure fluid side, and wherein pluralities of Rayleigh step mechanisms and reverse Rayleigh step mechanisms are provided in parallel in a circumferential direction so as to constitute pairs, and an upstream end of a groove part of an nth Rayleigh step mechanism and a downstream end of a groove part of an n−1th reverse Rayleigh step mechanism are formed so as to substantially coincide in a position in the circumferential direction as seen from the upstream side, both groove parts being communicated with the high-pressure fluid side via a shared communication. |
