Patent ID: 7938633

Claim:
An electric compressor comprising: an electric motor having a stator; a compression mechanism that is driven by the electric motor to compress gas; and a housing for accommodating the electric motor and the compression mechanism, the housing having a circumferential wall, which is formed such that the stator is fitted thereto, the circumferential wall including a thick portion and a thin portion, which are arranged at the same position as the stator with respect to an axial direction of the circumferential wall and have different thicknesses, wherein a center of the thickness of the thick portion is located outside of a center of the thickness of the thin portion with respect to a radial direction of the circumferential wall so that the thin portion is allowed to be deformed outward in the radial direction and the deformation of the thin portion generates a force that is applied to the thick portion and is directed inward in the radial direction for fastening the stator, wherein the circumferential wall has an inner circumferential surface and an outer circumferential surface, a whole surface of the inner circumferential surface having a constant radius, wherein at least a section of the inner circumferential surface that corresponds to the thick portion fastens the stator, and at least a section of the outer circumferential surface that corresponds to the thick portion is an arc surface.