Variable displacement compressor and its assembling method

摘要

A compressor includes a cylinder block (11) having a cylinder bore (11a), a first housing (12) attached to a first end of the cylinder block (11), a second, housing (13) attached to a second end of the cylinder block (11), a crank chamber (15) defined between the cylinder block (11) and the first housing (12), a drive plate (22) located in the crank chamber (15) and mounted on a drive shaft (16), and a piston (35) operably coupled to the drive plate (22) and located in the cylinder bore (11a). The drive plate (22) is tiltable between a maximum inclination position and a minimum inclination position according to a difference between the pressure in the crank chamber (15) and the pressure in the cylinder bore (11a). The cylinder block (11) has a shutter chamber (27) opening to the first end and the second end. A shutter member (28) is accommodated in the shutter chamber (27). The shutter member (28) is movable between a first position and a second position in response to the inclination of the drive plate (22) to selectively connect and disconnect an external circuit (52) with an suction chamber (37). The drive plate (22) is held at the minimum inclination position when the shutter member (28) is positioned in the second position. The shutter chamber (27) has a diameter that is constant in an axial direction with respect to the shutter chamber (27). The shutter member (28) is removably inserted into the shutter chamber (27) from the second end of the cylinder block (11). <IMAGE>