| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent an adjustment rod from becoming incapable of smoothly moving in an axial direction by applying the constitution that a restriction part is formed on a casing outside a slide hole for coupling a piston so as to adjust the inclination angle of a swash plate via the adjustment rod for limiting the travel end of the rod in a direction for the approach of a piston to the one-end closed part of the slide hole. SOLUTION: A slide hole 77 extending in parallel with the axial line of a rotating shaft 23 is formed on the raised part 30b of the main body 30 of a casing 21 and, then, a piston 78 is slidably coupled to the hole 77. Also, the expansion of the piston 78 is controlled, thereby causing an adjustment rod 80 penetrating along one diameter line of the piston 78 to axially move and oscillate a joint arm 75, or a swash plate holder 28 as well as a swash plate 27 about a trunnion axial line O. The inclination angle of the swash plate 27 or pump capacity is thereby changed. Also, both ends of a joint pin 88 are led through restriction holes 89 and 89 as a pair of restriction parts having the raised part 31b of a cover 31 via an opening 74, thereby restricting the travel end of the adjustment rod 80 and the piston 78.</p> |
