Vane motor

Abstract

A vane motor including a casing having a pressurized fluid inlet and a pressurized fluid outlet through which a pressurized fluid is introduced and discharged and a rotor disposed inside the casing and configured to receive the pressure of the pressurized fluid and rotate about a rotary shaft held in the casing, the rotor having a generally cylindrical rotor body with a central axis corresponding to the rotary shaft and vanes installed in vane guide grooves formed in the side surface of the rotor body and changed in widths protruding from the vane guide grooves according to rotation phases, wherein the vanes are arch-shaped in a longitudinal direction of the rotary shaft, the vane guide grooves are arch-shaped to accommodate the vanes thereinto, and the vanes are rotatably coupled to portions of the rotor body through link rods disposed on one side of the vanes. The vane motor is configured to allow the arch-shaped vanes to perform the rotating motions along the arch traces, not the linear reciprocating motions, thereby suppressing and removing the abnormal operations, abrasion, and friction of the vanes.

Dependencies are inferred from the claim text.