Calsonic Corporation

Masaki Kawachi

Toshikatsu Miyaji

A swash plate type compressor comprises a case including a cylindrical cylinder block; a drive shaft installed in the case and rotatable about its axis; a swash plate carried by the drive shaft s and rotatable together therewith; a cylindrical rear housing having refrigerant intake and exhaust chambers defined therein; and a sealing structure arranged between the cylinder block and the rear housing to assure a hermetical sealing therebetween. The sealing structure comprises a rear annular flat end possessed by the cylinder block; a front annular flat end possessed by the rear housing and attached to the rear annular flat end; an annular groove formed in one of the rear and front annular flat ends, the annular groove consisting of mutually merged first and second annular recesses, the first annular recess being positioned radially inside of the second annular recess and having a deeper bottom than the second annular recess; a valve plate interposed between the cylinder block and the rear housing having a peripheral portion thereof received and compressed in the first annular recess; and a seal ring received and compressed in the second annular recess.

Swash plate type compressor

A swash plate type variable displacement compressor for refrigerant in a refrigeration cycle of an air conditioning system for an automotive vehicle. The compressor comprises a drive shaft around which a journal is movably disposed around so as to be rotatable with the drive shaft. The journal has a generally cylindrical boss section which has an external thread portion, and a flange section. A swash plate is provided for converting a rotational motion of the drive shaft into a linear motion of the pistons. The swash plate is fixedly mounted on the boss section of the journal and has an internal thread portion which is engaged with the external thread portion of the boss section. The swash plate includes a generally cylindrical thick central section having the internal thread portion, and a peripheral section integral with the central section and having an axial dimension smaller than the central section. A plurality of tool engaging grooves are formed at least in the central section and located on a first surface of the swash plate. The tool engaging grooves are located along a circumference concentric with a central bore of the central section. Additionally, a plurality of seat projections are formed on a second surface of the swash plate which second surface is opposite to the first surface, each seat projection projecting in a direction away from the second surface. The seat projections are located respectively corresponding to and at back sides of the tool engaging grooves. Each seat projection is to be in contact with the flange section of the journal.

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Tochigi, Japan

Masaki Kawachi