Electric compressor and method for assembling same

1. An electric compressor, comprising:

an electric motor contained in a casing, and driving a compression part compressing a refrigerant guided into the casing; and

a connecting part container having an external power line supplying electric power to the electric motor guided in from outside the casing, and containing a plurality of connecting parts electrically connecting, within the casing, the external power line and an internal power line guided from the electric motor;

the external power line having a terminal pin connected to the connecting part container;

the terminal pin being covered by a second rubber ring and made liquid-tight; and

the connecting part container being provided between by the second rubber ring and the electric motor along a direction of a motor axis of the electric motor, and the connecting part container making a direct surface contact with the second rubber ring and the electric motor,

wherein one or both ends of the second rubber ring is provided with one of a fitting concavity and a fitting protrusion fitting correspondingly onto at least one selected from the group consisting of a casing side and a connecting part container side,

wherein the at least one selected from the group consisting of the casing side and the connecting part container side is provided with one of a fitting protrusion which is inserted and fitted into the fitting concavity on the second rubber ring in a direct surface contact state and a fitting concavity into which the fitting protrusion on the second rubber ring is inserted and fitted in a direct surface contact state,

wherein the connecting part container has a plurality of terminal case parts each containing one of the connecting parts, and

wherein the connecting part container is shaped by integration of the plurality of terminal case parts aligned in parallel while each case part being rectangular in shape longer in a longitudinal direction perpendicular to the motor axis of the electric motor and provided offset with respect to an adjacent case part in the longitudinal direction by a predetermined distance.

2. The electric compressor according to claim 1 , wherein a natural length of at least one selected from the group consisting of the fitting concavity and the fitting protrusion with respect to an axial direction of the second rubber ring is longer than a length of at least one selected from the group consisting of the fitting protrusion and the fitting concavity provided on the at least one selected from the group consisting of the casing side and the connecting part container side with respect to the axial direction.

3. The electric compressor according to claim 2 , wherein a portion of the second rubber ring is narrower than another portion of the second rubber ring.

4. The electric compressor of claim 2 , further comprising:

a resin case having a lid pressing a coil wound around an end part of the electric motor, wherein

a split portion of the connecting part container is integrated with the lid.

5. The electric compressor according to claim 1 , wherein a portion of the second rubber ring is narrower than another portion of the second rubber ring.

6. The electric compressor of claim 5 , further comprising:

a resin case having a lid pressing a coil wound around an end part of the electric motor, wherein

a split portion of the connecting part container is integrated with the lid.

7. The electric compressor of claim 1 , further comprising:

a resin case having a lid pressing a coil wound around an end part of the electric motor, wherein

a split portion of the connecting part container is integrated with the lid.