| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a swash plate-type variable displacement piston pump, capable of extremely smoothly adjusting a swash plate for adjusting the discharge flow rate and capable of performing the pump operation having low noise, high performance and high reliability, in the swash plate-type variable displacement piston pump to be operated at relative high speed. SOLUTION: A swash plate-type variable displacement piston pump is composed of a swash plate-type variable displacement piston pump for adjusting the discharge flow rate by adjusting the tilt angle of the swash plate, and discharge pressure oil of the variable displacement piston pump is partially supplied and lubricated to a sliding surface between the swash plate and a fixed member for supporting it. An oil passage 65b provided with a restriction passage 65d to be normally communicated through a small-diameter piston 65, and an oil passage 65c to be communicated with the oil passage 65b according to the tilt angle of the swash plate 30 and having the large opening area are provided as a supplying oil amount adjusting means for adjusting the amount of oil to be supplied to the sliding surface according to the tilt angle of the swash plate.</p> |
