Expansible chamber devices – Displacement control of plural cylinders arranged in... – Parallel cylinders
Patent
1998-10-20
2000-08-01
Look, Edward K.
Expansible chamber devices
Displacement control of plural cylinders arranged in...
Parallel cylinders
4172221, F01B 300
Patent
active
060950307
ABSTRACT:
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.
REFERENCES:
patent: 4475871 (1984-10-01), Roberts
patent: 5292233 (1994-03-01), Takenaka et al.
patent: 5645405 (1997-07-01), Ota et al.
patent: 5706716 (1998-01-01), Umemura
patent: 5749712 (1998-05-01), Umemura
Patent Abstracts of Japan, vol. 097, No. 011, Nov. 28, 1997 & JP 09 175159 (Calsonic Corp), Jul. 8, 1997.
Calsonic Corporation
Lazo Thomas E.
Look Edward K.
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