Hermetically sealed compressor and refrigeration cycle device

A hermetic compressor is provided with: a hermetic container constituting the outer contour; and a compression mechanism part housed in the sealed container, the compression mechanism part being provided with: a hollow cylindrical cylinder having vane grooves provided in the radial direction; a rotary piston that eccentrically rotates along the inner circumferential surface of the cylinder; a vane that reciprocates inside the vane groove and partitions a space between the inner peripheral surface of the cylinder and the rotary piston into a high-pressure side and a low-pressure side; and a blade spring that urges the blade so that the blade comes into contact with the rotary piston, the center position of the load generated by the blade spring being closer to the low-pressure side than the center position of the blade. 密闭型压缩机具备：密闭容器，构成外廓；和压缩机构部，收纳于密闭容器，压缩机构部具备：中空圆筒状的缸体，具有沿径向设置的叶片槽；旋转活塞，沿着缸体的内周面进行偏心旋转；叶片，在叶片槽的内部进行往复运动，将缸体的内周面与旋转活塞之间的空间分隔成高压侧和低压侧；以及叶片弹簧，对叶片进行施力而使其与旋转活塞抵接，由叶片弹簧产生的载荷中心位置比叶片的中心位置靠近低压侧。