Expansible chamber devices – Displacement control of plural cylinders arranged in... – Parallel cylinders
Reexamination Certificate
1999-01-12
2001-04-17
Look, Edward K. (Department: 3745)
Expansible chamber devices
Displacement control of plural cylinders arranged in...
Parallel cylinders
C092S071000, C417S222100, C091S499000
Reexamination Certificate
active
06216582
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a swash plate type compressor for use in, for example, an automobile air conditioner.
In a swash plate type compressor, a swash plate is mounted on a shaft which is rotated by an automobile engine. Pistons are indirectly coupled to the swash plate. When the swash plate is rotated together with the shaft, the pistons make reciprocating motions to compress fluid.
In a swash plate type compressor of a variable displacement type, a swash plate boss (which will be abbreviated hereinunder a boss) is coupled to a shaft via a rotor and a hinge mechanism at a variable inclination relative to the shaft. A swash plate is fixed to the boss. In this case, since pistons have a stroke corresponding to the inclination of the swash plate, the displacement of the compressor can be set variable.
In the conventional techniques, fixation of the swash plate relative to the boss has been carried out using a screw. However, since the swash plate type compressor generates various vibrations, there has been a problem of causing loosening of the screw. The loosening of the screw may cause separation of the swash plate from the boss, leading to breakage of the compressor. On the other hand, when welding is used for the fixation, welded portions should be made of the same material and further an influence of heat should be considered, so that it is disadvantageous in view of cost and quality.
SUMMARY OF THE INVENTION
It is therefore an object of the present invention to provide a swash plate type compressor wherein fixation of a swash plate is carried out reliably and inexpensively.
Other objects of the present invention will become clear as the description proceeds.
The present invention pays attention to fixation by a rivet rather than fixation by a screw which has been long used as a fixing means for fixation against vibration. It has been confirmed through experiments that use of the rivet is excellent for fixation against vibration.
According to an aspect of the present invention, there is provided a swash plate type compressor which comprises a rotated member subjected to a rotation motion, a swash member, a plurality of rivets fixing the swash member to the rotated member, a piston, and shoe means interposed between the swash member and the piston for moving the piston in response to movement of the swash member to perform a compression operation.
According to another aspect of the present invention, there is provided a swash plate type compressor, wherein a swash plate fixed to a boss is coupled to a plurality of pistons via shoes and, when a main shaft is rotated to rotate a rotor, a rotational motion of the rotor is transmitted to the boss via a hinge mechanism which changes an inclination of the swash plate, so that the boss is rotated to rotate the swash plate at the inclination to cause the pistons to make reciprocating motions in cylinders via the shoes for performing a compressing operation. The swash plate type compressor is characterized in that the swash plate is fixed to the boss by a plurality of rivets.
REFERENCES:
patent: 3828653 (1974-08-01), Aldinger et al.
patent: 4030404 (1977-06-01), Meijer
patent: 5106271 (1992-04-01), Shimizu et al.
patent: 5292233 (1994-03-01), Takenaka et al.
patent: 5645405 (1997-07-01), Ota et al.
patent: 5984643 (1999-12-01), Ota et al.
patent: 2618556 (1977-11-01), None
patent: 0366349 (1990-05-01), None
patent: 0711918 (1996-05-01), None
patent: 0903495 (1999-03-01), None
European Search Report, Issued Sep. 1, 1999.
Saito Kenji
Shimizu Shigemi
Baker & Botts L.L.P.
Look Edward K.
Rodriguez Hermes
Sanden Corporation
LandOfFree
Swash plate type compressor in which a rivet means is used... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Swash plate type compressor in which a rivet means is used..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Swash plate type compressor in which a rivet means is used... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2547139