Motor-driven compressor

Abstract

A motor of motor-driven compressor includes a plurality of phase coils, and a plurality of phase wires are drawn from each of the phase coils. The phase wires are bundled and form a phase wire bundle. The tip portions of the phase wires are connected electrically by a conductive ring caulked by heating. A wire joint is formed so as to connect electrically each phase wire at the tip portion of the phase wire bundle. A storage chamber is formed so as to penetrate a cluster block. The wire joint is inserted in the storage chamber. The insertion opening is closed by a cylindrical member made of rubber.

What is claimed is: 
     
         1 . A motor-driven compressor comprising:
 a shell,   an electric motor provided in the shell,   a compression portion driven by the electric motor and compressing refrigerant,   a plurality of phase coils and a stator provided in the electric motor,   a plurality of lead wires and a plurality of phase wires drawn respectively from the plurality of phase coils,   a cluster block having a phase connector, wherein the lead wires are connected to the phase connector,   a drive control portion of the electric motor outside of the shell being electrically connected to the phase connector through a conductive retainer penetrating the shell,   a phase wire bundle formed by binding the plurality of phase wires drawn respectively from the plurality of phase coils,   a wire joint formed at the tip portion of the phase wire bundle by thermal caulking so as to form a neutral point, wherein each phase wire is connected electrically at the tip portion of the phase wire bundle;   a storage chamber formed in the cluster block, wherein the storage chamber has an insertion opening on the outer periphery of the cluster block,   wherein the wire joint is inserted from the insertion opening to the storage chamber,   and a closing member closing the insertion opening.   
     
     
         2 . The motor-driven compressor according to  claim 1 , wherein the closing member is cylindrical and has a cylindrical hole, through which the wire joint is inserted. 
     
     
         3 . The motor-driven compressor according to  claim 2 , wherein the closing member is formed by connecting a first concave piece and a second concave piece. 
     
     
         4 . The motor-driven compressor according to  claim 2 , wherein the closing member has a cut line which extends to the cylindrical hole and the cut line extends from one end of the closing member to the other end, and the closing member is developable from the cut line. 
     
     
         5 . The motor-driven compressor according to  claims 2  through  4 , wherein the closing member has a tapering outer periphery and a diameter of the tapering outer periphery decreases in the insertion direction. 
     
     
         6 . The motor-driven compressor according to  claim 1 , wherein the closing member is made of rubber. 
     
     
         7 . The motor-driven compressor according to  claim 1 , wherein the storage chamber is formed into a dead end shape not penetrating the cluster block. 
     
     
         8 . The motor-driven compressor according to  claim 1 , wherein the storage chamber and the plurality of phase connectors are arranged in parallel. 
     
     
         9 . The motor-driven compressor according to  claim 1 , wherein the compression portion, the electric motor, and the drive control portion are arranged in line, and the plurality of phase wires are drawn from an end of the stator near the compression portion.