| 摘要 |
The present invention relates to a vane pump, capable of improving a theoretical discharge amount by increasing a volume of a vane pump chamber while reducing abrasion of the vane pump, and a determination method for a profile in a cam ring forming a vane pump. The determination method for a profile in a cam ring includes: a step of determining a maximum radius (Rmax) point, wherein the cam ring has a ring-shaped inner profile varying between a maximum radius (Rmax) and a minimum radius (Rmin) in a circumferential direction around a rotation shaft; a step of determining a cycloid curve passing the maximum radius (Rmax) point; a step of determining a tangent line inclined by being connected to the cycloid curve by a tangent curvature; and a step of determining a circular arc passing a minimum radius (Rmin) point and connected to an end of the tangent line by the tangent curvature. The vane pump includes: the cam ring accommodated in a pump housing; a rotor accommodated in the cam ring to rotate around the rotation shaft; and multiple vanes discharging a fluid by being connected to the rotor. |
