Variable-capacity swashplate-type compressor

Abstract

A variable-capacity swash plate-type compressor including: a lug plate coupled to a swash plate so as to be fixed to a driving shaft; and the swash plate coupled to the lug plate and having a varying inclination angle while making a rotational motion. The swash plate includes a body, and first and second arms that protrude from the body toward the lug plate and are spaced apart from each other. The lug plate includes a plate, a center lug arm that protrudes from the plate to be inserted between the first and second arms and is coupled to the body of the swash plate, and left and right lug arms that protrude from the plate to be spaced apart from each other and support both sides of each of the first and second arms.

1 . A variable-capacity swash plate-type compressor comprising:
 a lug plate coupled to a swash plate so as to be fixed to a driving shaft; and   the swash plate coupled to the lug plate and having a varying inclination angle while making a rotational motion,   wherein the swash plate comprises a body, and first and second arms that protrude from the body toward the lug plate and are spaced apart from each other, and   the lug plate comprises a plate, a center lug arm that protrudes from the plate to be inserted between the first and second arms and is coupled to the body of the swash plate, and left and right lug arms that protrude from the plate to be spaced apart from each other and support both sides of each of the first and second arms.   
     
     
         2 . The variable-capacity swash plate-type compressor of  claim 1 , wherein at least one part of spaces C 2  and C 3  between the first and second arms of the swash plate and one side of the center lug arm and spaces C 1  and C 4  between the first and second arms and the left and right lug arms are spaced apart from each other so that a clearance is formed. 
     
     
         3 . The variable-capacity swash plate-type compressor of  claim 2 , wherein, when the driving shaft rotates, at least one of the left lug arm, the right lug arm, the center lug arm, and the first and second arms is twisted so that at least a part of two facing surfaces in a state in which the clearance is disposed between the two facing faces, is in contact with each other. 
     
     
         4 . The variable-capacity swash plate-type compressor of  claim 2 , wherein each of the first and second arms and the left and right lug arms are spaced apart from each other, thereby forming left and right clearances, and both sides of each of the first and second arms and the center lug arm are spaced apart from each other, thereby forming a center clearance. 
     
     
         5 . The variable-capacity swash plate-type compressor of  claim 2 , wherein surfaces placed in one among spaces between the first and second arms and the left and right lug arms and spaces between the left and right lug arms and the center lug arm are in contact with each other, thereby forming a torque transfer surface that transfers power for rotating the swash plate. 
     
     
         6 . The variable-capacity swash plate-type compressor of  claim 5 , wherein, when a torque transfer surface is formed in a position of a space C 3  between the second arm and one side of the center lug arm, the center clearance C 2  has a greater gap than that of the left clearance C 1  (C 1 <C 2 ). 
     
     
         7 . The variable-capacity swash plate-type compressor of  claim 5 , wherein, when a torque transfer surface is formed in a position of a space C 1  between the first arm and the left lug arm, the one-side center clearance C 3  has a greater gap than that of the other-side center clearance C 2  (C 2 <C 3 ). 
     
     
         8 . The variable-capacity swash plate-type compressor of  claim 1 , wherein a through hole through which the center lug arm of the lug plate passes, is formed in the swash plate, and surface contact portions are formed on both sides of the through hole and face both sides of the center lug arm.