Terminal device for electric compressor

Abstract

A terminal device for an electric compressor has a partition wall and a terminal member for supplying electricity to an electric motor for driving a compression mechanism. The partition wall is located between an electric motor-storing section, which stores the electric motor and in which lubricating oil-containing fluid to be compressed is present, and a circuit section for supplying electricity to the electric motor. The terminal member extends through the partition wall in a sealed and insulated manner. The terminal member is constructed as a steel bolt-like member, and an end of a lead wire for supplying electricity to the electric motor is directly connected by caulking to the end of the terminal member at the electric motor-storing section side. The terminal device can exhibit high insulation performance even if polyalkylene glycol-based oil is used as lubricating oil contained in fluid to be compressed. Further, the terminal device has a simple structure not requiring a cluster, can ensure high insulation performance, and can be constructed at low cost.

1 . A terminal device for an electric compressor having a partition wall which is located between a storing section for an electric motor for driving a compression mechanism, in which lubricating oil-containing fluid to be compressed is present, and a circuit section for supplying electricity to said electric motor, for isolating said both sections from each other, and a terminal member for supplying electricity to said electric motor which extends through said partition wall in a sealed and insulated manner, characterized in that said terminal member is constructed as a steel bolt-like member, and an end of a lead wire for supplying electricity to said electric motor is directly connected by caulking to an end of said terminal member at an electric motor-storing section side. 
     
     
         2 . The terminal device for an electric compressor according to  claim 1 , wherein an insertion portion for an electricity conduction wire at said end of said lead wire for supplying electricity to said electric motor and a caulking operation portion for caulking said electricity conduction wire inserted into said insertion portion are formed at said end of said terminal member at said electric motor-storing section side. 
     
     
         3 . The terminal device for an electric compressor according to  claim 1 , wherein an electricity conductive portion of said terminal member extending between said both sections is covered with an insulating varnish. 
     
     
         4 . The terminal device for an electric compressor according to  claim 3 , wherein said insulating varnish is an electro-deposition varnish. 
     
     
         5 . The terminal device for an electric compressor according to  claim 1 , wherein a polyalkylene glycol-based oil is used as said lubricating oil. 
     
     
         6 . The terminal device for an electric compressor according to  claim 1 , wherein said partition wall is formed by a compressor housing. 
     
     
         7 . The terminal device for an electric compressor according to  claim 1 , wherein said electric compressor is a compressor used in an air conditioning system for vehicles.