| 摘要 |
PROBLEM TO BE SOLVED: To prevent an oil film from being broken by one-sided contact of a shaft member applied with a pressure-direction load in the axial direction, in a sliding structure in which the shaft member is slidably retained on a guide hole. SOLUTION: In consideration of a fact that end portions 25c1, 25c2 coming into constant sliding contact with a side surface 1232a of the guide hole 1232, of a side surface 25c of the shaft member 251, become contact portions which come into one-sided contact, the end portions 25c1, 25c2 are respectively formed with a plurality of labyrinth grooves 2501, 2502 so that the oil film fully spreads over the whole contact portion without need for increasing the width of any groove. Elimination of excessive increase in the groove width assures a sliding length. COPYRIGHT: (C)2004,JPO&NCIPI
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