PRINCIPLE OF EQUAL PRESSURE TYPE DIFFERENTIAL FLUID ENGINE

摘要

PURPOSE: To reduce both the input capacity of pressurized source fluid and flow resistance by using each vane rotary type fluid cylinder, and thereby equally pressurizing the inside of each cylinder. ;CONSTITUTION: Let an engine has a structure where an eccentric circular cam 10 is fixed onto an output shaft 9, a rotor 11 is eccentrically rotated, and a normal rotation side pressurizing circuit 5 and a reverse rotation side pressurizing circuit 6 are provided for the inside of the output shaft 9, so that the rotational direction can be switched over by an electromagnetic valve and the like. When the electromagnetic valve 3 is turned on while a motor 1 is driven with a hydraulic pump 2 driven, fluid passes through the normal rotation side pressurizing circuit 5 so as to equally pressurize a normal rotation side cylinder. The equally pressurized cylinder allows thrust to be generated in the directions of 18 and 19, since the bearing area of a normal thrust side vane 12 is large, the rotor 11 starts rotating in the direction of 17. And when the rotor is rotated by 180°, rotating thrust disappears by the function of an eccentric shaft, so that the rotor is suspended at one time per one revolution. In this place, the axial connection of the cylinder with another cylinder having a structure identical to that of the aforesaid cylinder with the eccentric cams combined while being mutually changed in phase, thereby permits continuous revolution to be kept on. By this constitution, an input saving fluid engine can be materialized without changing the volume of fluid in the inside of the cylinder.;COPYRIGHT: (C)1994,JPO&Japio