PURPOSE: To enable to prevent the play of engaged part with a simple structure and to receive compressive reaction in a stable condition by supporting the rotary swash plate so as to be capable of oscillating so that a guide pin is engaged to be in surface contact with a guide groove which is provided in a driving shaft to have flat surfaces parallel to each other.
CONSTITUTION: Flat surfaces 19A parallel to each other are formed in a driving shaft 17 in which support block 19, etc. are fixed. On both these flat surfaces, guide grooves 29 and 29 are formed respectively so that the center of the circular arcs is the center of a connecting part 21 connecting an oscillating plate 18 in the position of upper dead point and a connecting rod 26. On the other hand, a guide pin 31 having a shape to come in surface contact with guide grooves 29 is provided on a rotary swash plate 20. And, the rotary swash plate 20 is supported by the driving shaft 17 so as to be capable of oscillating by engaging the guide pin 31 with the guide grooves 29. Each piston 16 is connected via a connecting rod 26 to the oscillating plate 18 which is supported by the rotary swash plate 20 via a bearing 22.
SUZUKI SHINICHI
TAKENAKA KENJI
