Patent ID: 6553645
Filing Date: 2003-04-29
Classification: F04C,H02K,Y10T

Abstract:
A method of assembling hermetic motor compressor having:a main shaft constructed at one end of a crankshaft for rotatory driving a orbiting scroll member in engagement with a stationary scroll member, said orbiting scroll member forming a plurality of compression spaces; a compression mechanism having a main bearing supporting said main shaft in a freely rotatable manner; a motor comprising a rotor fixed to said main shaft, and a stator having a stator winding wound on an iron core with an electrical insulator; an auxiliary bearing supporting a distal end of said main shaft; a bearing holder retaining said auxiliary bearing; a bearing bracket mounting said bearing holder in any of a slidable manner and a stationary manner; an auxiliary bearing assembly positioned at one side of said motor opposite to said compression mechanism; and a cylindrically-formed body shell retaining and enclosing said compression mechanism, said motor and said auxiliary bearing assembly, said method comprising: a first step for shrinkage-fitting said stator into said body shell; a second step for shrinkage-fitting, and welding thereafter to fix said compression mechanism to said body shell; a third step for fixing said bearing bracket integrally to said body shell; and a fourth step for shifting said bearing holder and said bearing bracket in a radial direction while turning said main shaft with an external force and measuring a turning torque thereof, and for fixing said bearing holder to said bearing bracket at a position where the rotating torque becomes smallest.