Electric compressor

Abstract

An electric motor that has a electric motor and a compression mechanism. The motor and the compression mechanism are accommodated in a single chamber. A single shaft functions as the output shaft of the motor and the drive shaft of the compressor.

1 . An electric compressor that has an electric motor and a compression mechanism, which are accommodated in a housing, the compressor comprising: 
 a chamber for accommodating the electric motor and the compression mechanism; and    a shaft that functions as the output shaft of the motor and the drive shaft of the compression mechanism.    
     
     
         2 . The electric compressor according to    claim 1   , wherein the electric motor includes a rotor, wherein the rotor has an iron core that is formed by laminating a plurality of steel sheets and a pair of rotor ends, and wherein the rotor ends are located at the ends of the iron core to fix the core relative to the shaft.  
     
     
         3 . The electric compressor according to    claim 2   , wherein the compression mechanism includes a rotating member that rotates integrally with the shaft, and wherein the rotating member is integrally formed with one of the rotor ends.  
     
     
         4 . The electric compressor according to    claim 2   , wherein the compression mechanism includes: 
 a cylinder bore formed in the housing;    a piston that reciprocates in the cylinder bore; and    a cam plate that can slide on and incline relative to the shaft, wherein the cam late is coupled to the piston and to the rotating member, wherein the cam plate converts rotation of the shaft into reciprocation of the piston, and wherein the inclination angle of the cam plate is adjusted to change the stroke of the piston.    
     
     
         5 . The electric compressor according to    claim 2   , wherein the compression mechanism includes: 
 a cylinder bore formed in the housing;    a piston that reciprocates in the cylinder bore; and    a swash plate that is supported on the shaft such that the inclination angle relative to the shaft is fixed, and wherein the swash plate converts rotation of the shaft into reciprocation by a constant stroke of the piston.    
     
     
         6 . The electric compressor according to    claim 5   , wherein the rotating member includes a support surface that is inclined by a predetermined angle relative to the axis of the shaft and a boss that is perpendicular to the support surface, the compressor further comprising: 
 a thrust bearing that is located between the swash plate and the support surface; and    a roller bearing that is located between the swash plate and the boss, wherein the roller bearing permits the swash plate to rotate relative to the shaft.    
     
     
         7 . An electric compressor that has an electric motor and a compression mechanism, which are accommodated in a housing, the compressor comprising: 
 a chamber for accommodating the electric motor and the compression mechanism;    a shaft that functions as the output shaft of the motor and the drive shaft of the compression mechanism;    wherein the compression mechanism includes: 
 a rotating member that rotates integrally with the shaft;  
 a plurality of cylinder bores formed in the housing;  
 a plurality of pistons, wherein each piston can reciprocate in one of the cylinder bores;  
 a cam plate that can slide on and incline relative to the shaft, wherein the cam late is coupled to the pistons and to the rotating member, wherein the cam plate converts rotation of the shaft into reciprocation of each piston, and wherein the inclination angle of the cam plate is adjusted to change the stroke of each piston; and  
   wherein the electric motor includes a rotor, wherein the rotor has an iron core that is formed by laminating a plurality of steel sheets and a pair of rotor ends, and wherein the rotor ends are located at the ends of the iron core to fix the core relative to the shaft.    
     
     
         8 . The electric compressor according to    claim 7   , wherein the compression mechanism includes a rotating member that rotates integrally with the shaft, and wherein the rotating member is integrally formed with one of the rotor ends.