Patent ID: 7501732

Claim:
An electric rotating machine comprising: a casing including a first frame and a second frame joined to each other at opening ends of said first and second frames in an axial direction of said electric rotating machine, said first frame being formed with a fitting hole having an opened cross-sectional shape which opens to said opening end of said first frame, said casing including a yoke forming a magnetic path, a housing joined to one opening end of said yoke and an end frame joined to the other opening end of said yoke, said first frame being said yoke, said second frame being one of said end frame and said housing; and a drain member made of rubber and fitted into said fitting hole said drain member including a fitting section fitted to said casing, said fitting section having a neck portion through which a drain hole penetrates, and inner and outer collar portions facing with each other across from said neck portion in a direction in which said drain hole extends, and said drain member being installed on said first frame in such a state that said inner and outer collar portions abut against inner and outer wall surfaces of said first frame, respectively, by inserting said neck portion into said fitting hole from a side of said opening end of said first frame, and a part of said opening end of said second frame abuts against an abutment surface formed in said outer collar portion so that said neck portion inserted into said fitting hole is held in said axial direction between said first frame and said second frame.