PRESS-FIT STRUCTURE OF DRIVING SHAFT AND ROTARY ELEMENT IN FLUID MACHINERY

摘要

PROBLEM TO BE SOLVED: To provide the press-fit structure of a driving shaft and a swash plate in a swash plate compressor, in which a dimension in an axial direction can be miniaturized, by shortening the press-fit length of the driving shaft and the swash plate which is press-fitted. SOLUTION: The peripheral surface 182 of the press-fit part 181 of a driving shaft 18 is formed into an inner pillar shape. First and second annular projected grooves 343, 344 are formed in the inner circumferential surface of the press-fit hole of a swash plate 34 to which this press-fit part 181 is press-fitted. Under a condition that the driving shaft 18 and the swash plate 34 are press-fitted and fitted to each other, this structure is so arranged that tightening force that the inner circumferential surface of the press-fit hole pushes and presses the peripheral surface 182 of the press-fit part 181 of the driving shaft 18, repeats two times strong/weak according as it is directed to an axial direction.