Variable Displacement Compressor

Abstract

In a variable displacement compressor 100 , transmitting member 116 transmits rotational motion of rotor 112 to swash plate 111 and supports swash plate 111 . Guide member 117 guides inclining motion of swash plate 111 such that a top dead center position of piston 126 is maintained to be substantially constant. Members 116, 117 are separately formed at different portions on a rotor end face 112 a . In the variable displacement compressor 100 , first contacted member 118 contacted with transmitting member 116 , and second contacted member 119 contacted with guide member 117 , are separately formed at different portions on swash plate end face 111 b . The transmitting member 116 and the first contacted member 118 extend on rotor 112 and swash plate 111 , respectively, from a top dead center side region V 1 to a bottom dead center side region V 2 of the piston.

1 . A variable displacement compressor comprising:
 a housing in which a cylinder bore is formed;   a drive shaft rotatably supported inside the housing;   a rotor secured to the drive shaft;   a swash plate facing the rotor and attached to the drive shaft in a manner capable of inclining with respect to the axis of the drive shaft; and   a piston disposed in the cylinder bore and reciprocating due to rotational motion of the swash plate,   in which an inclination angle of the swash plate is changed to change a stroke amount of the piston so that a discharge displacement of refrigerant discharged from the cylinder bore is made variable,   wherein, on a rotor end face of the rotor on a swash plate side, a transmitting member that transmits rotational motion of the rotor to the swash plate and supports the swash plate, and a guide member that guides inclining motion of the swash plate such that a top dead center position of the piston is maintained to be substantially constant, are separately formed at different portions,   wherein, on a swash plate end face of the swash plate on a rotor side, a first contacted member that is contacted with the transmitting member, and a second contacted member that is contacted with the guide member, are separately formed at different portions,   wherein the transmitting member extends on the rotor from a top dead center side region to a bottom dead center side region of the piston, and the first contacted member extends on the swash plate from the top dead center side region to the bottom dead center side region of the piston.   
     
     
         2 . The variable displacement compressor according to  claim 1 ,
 wherein the transmitting rotational motion of the rotor to the swash plate and supporting the swash plate are caused by configuring outer wall faces of a pair of second plate members to contact corresponding opposed wall faces of a pair of first plate members, wherein the pair of second plate members is served as the first contacted member and is formed to be erect on the swash plate between the pair of first plate members, and the pair of first plate members is served as the transmitting member and is formed to be erect on the rotor end face and to face each other on both sides across the drive shaft,   wherein the guiding inclining motion of the swash plate is caused by configuring a second protruding portion to contact a first protruding portion, wherein the second protruding portion is served as the second contacted member and is formed to protrude on the swash plate end face at a portion corresponding to the first protruding portion, and the first protruding portion is served as the guide member and is formed to protrude at an outer peripheral portion in the top dead center side region of the rotor end face.   
     
     
         3 . The variable displacement compressor according to  claim 2 , wherein the swash plate includes a balance weight arranged on the swash plate end face in the bottom dead center side region and formed integrally with the pair of second plate members so as to connect one end faces of the pair of second plate members departing in the width direction.