Patent ID: 6338613
Filing Date: 2002-01-15
Classification: F04B,F16C

Abstract:
A piston-type compressor, which includes a housing having a crank chamber and cylinder bores, wherein pistons are located in the corresponding cylinder bores, a drive shaft is supported by the housing and passes through the crank chamber, a piston-driving part is supported by the drive shaft in the crank chamber to rotate integrally with the drive shaft, the pistons are coupled to the piston-driving part, and gas in the cylinder bores is compressed when rotation of the drive shaft is converted into reciprocation of the pistons through the piston-driving part, the compressor comprising:a thrust bearing, which is located between the housing and the piston-driving part and receives a thrust load applied to the piston-driving part, wherein the thrust bearing includes front and rear races and rolling elements located between the races, wherein the front race is located between the rear race and the housing and the rear race is located between the front race and the piston-driving part; a front seat formed on the housing for supporting the front race, wherein the front seat is annular and has an inner diameter; and a rear seat formed on the piston-driving part for supporting the rear race, wherein the rear seat is annular and has an outer diameter, and wherein the inner diameter of the front seat is larger than the outer diameter of the rear seat, which causes elastic deformation of the races when a thrust load is applied to the thrust bearing.