Patent ID: 7661940

Claim:
A rotor, comprising: a first body unit, comprising: a rotor housing having a hollow semi-cylindrical shape; a core having a solid semi cylindrical shape and provided in the rotor housing, with a plurality of roller plate seats formed by depressing opposite sides of a planar surface of the core based on a partition wall axially provided on the planar surface of the core; a second body unit having a structure symmetrical with the first body unit; a roller support plate placed on each of the roller plate seats of the first and second body units and having a size corresponding to an area of the roller plate seat, with a stopper provided on each of axial opposite ends of the roller support plate; a roller cage provided between the stoppers of each of the roller support plates, with a pin roller receiving space formed through the roller cage; a plurality of pin rollers, each having a cylindrical shape in which a diameter thereof is less than a length thereof, the pin rollers being placed in the pin roller receiving space of the roller cage at positions adjacent to each other, so that, when a sliding vane reciprocates in a diametrical direction, the pin rollers roll between the roller support plate and the sliding vane; the sliding vane provided between the pin rollers of the first body unit and the pin rollers of the second body unit and reciprocating in the diametrical direction, with a spacer hole formed at a central position through the sliding vane and extending a predetermined length in the diametrical direction; and a spacer inserted into the spacer hole of the sliding vane and maintaining a distance between the first body unit and the second body unit.