Piston for axial piston system of axial piston compressor in air conditioning apparatus of motor car, has groove bottom designed as part of spherical surface, where reference surface represents similar designed casing surface of swashplate

摘要

The piston (4) has a groove bottom designed as part of a spherical surface, and a reference surface representing a similar designed outer casing surface of a swashplate (3). A surface in the groove bottom exhibits a wedge shaped recess in a rotation direction of the swashplate, where the recess serves for entry of a lubricant into a gap between the groove bottom of another piston and the outer casing surface of the swashplate. A contour protrudes beyond an outer surface of a piston head (5). Two supporting surfaces (9) are supported on an outer surface of a housing (2).