Abstract: Provided is a Stirling cycle engine capable of being downsized without decreasing an assembling efficiency. A flange section as a fitting section is formed on one end of an inner core. A retainer plate as a retaining member for the flange section, holds and fixes the same with the aid of a second side surface of a mount integrally formed on a proximal end section of a cylinder, thus substantially coaxially arranging the cylinder and inner core. Accordingly, regardless of a thermal expansion difference between the cylinder and inner core, generation of impurity gas can be prevented; deformations of the cylinder and the inner core; and tremble of the inner core. Further, a conventional proximal end portion of the cylinder is not needed for fixing the inner core, thus reducing an outer diameter of a driving mechanism, eventually, an outer diameter of a casing.

Abstract: The Stirling cycle engine includes: a casing having a cylindrical shape; a cylinder for sidably inserting a displacer and a piston into a part adjacent to one end and another part adjacent to an other end thereof respectively,_the cylinder being coaxially placed inside the casing; a driving mechanism provided around an outer peripheral surface of the cylinder so as to force the piston to reciprocate inside the cylinder; a mount for fixing the driving mechanism to the outer peripheral surface of the cylinder, the mount being integrally formed with the cylinder; a flat spring having a center portion thereof connected to the piston; and a plurality of connecting arms, one ends thereof being integrally formed with the mount and the other ends thereof being connected to a peripheral portion of the flat spring.

Abstract: The Stirling cycle engine includes: a casing having a cylindrical shape; a cylinder for sidably inserting a displacer and a piston into a part adjacent to one end and another part adjacent to an other end thereof respectively,_the cylinder being coaxially placed inside the casing; a driving mechanism provided around an outer peripheral surface of the cylinder so as to force the piston to reciprocate inside the cylinder; a mount for fixing the driving mechanism to the outer peripheral surface of the cylinder, the mount being integrally formed with the cylinder; a flat spring having a center portion thereof connected to the piston; and a plurality of connecting arms, one ends thereof being integrally formed with the mount and the other ends thereof being connected to a peripheral portion of the flat spring.