Patent ID: 6042343
Filing Date: 2000-03-28
Classification: F01C,F04C

Abstract:
A variable displacement pump comprising:a cam ring for forming a pump chamber from a rotor in a state where said rotor having a vane is moved to an eccentric position;a cam case mounted on a portion around said cam ring to swingably support said cam ring such that a swingable pin axially disposed in a portion of an outer periphery of said cam ring in a circumferential direction of said cam ring serves as a fulcrum so that the capacity of said pump chamber is changed, said cam case urging said cam ring in a direction in which the capacity of said pump chamber is maximized;front and rear bodies axially disposed on the two sides of said cam case to form a pump body;a rotational shaft pivotally supported by said two bodies so as to rotate said rotor; andlocating means for locating said two bodies and said cam case during an assembling process;wherein said swingable pin serves as one of said locating means.