Patent ID: 7128540

Claim:
A rotary compressor comprising: an electric element, and a rotary compression element driven by the electric element, both components being provided in a hermetically sealed container; a cylinder constituting the rotary compression element, and a roller engaged with an eccentric portion formed in a rotary shaft of the electric element, and eccentrically rotated in the cylinder; a vane abutted on the roller to divide an inside of the cylinder into a low pressure chamber side and a high pressure chamber side; a spring member for always pressing the vane to the roller side; the cylinder forming a housing portion for the spring member, the housing portion being opened to a vane side and a hermetically sealed container side; a plug positioned in the housing portion from the hermetically sealed container side, and forming a gap between the plug and the hermetically sealed container; and an O ring attached around the plug to seal a part between the plug and the housing portion, wherein a space between the cylinder and the hermetically sealed container is set smaller than a distance from the O ring to an end of the plug on the hermetically sealed container side.