Patent ID: 7626818

Claim:
An inverter apparatus comprising: a fan unit case including two cooling fans arranged side by side and housed in the fan unit case as one integral unit; an inverter main body having a housing space formed on an outer side of a ceiling surface of the inverter main body, said fan unit case being slid to be housed in said housing space; and a fan cover fixed to said fan unit case, wherein said inverter main body comprises a die-cast case constituting the ceiling surface of the inverter main body and forming the housing space, said die-cast case having a concave portion that houses said fan unit case and a rib formed in a middle of the concave portion, said die-cast case and said fan unit case being fixed in such a manner that engaging members provided in one of said die-cast case and said fan unit case and engaged members provided in the other of said die-cast case and said fan unit case are engaged with each other, and the rib is situated between the two cooling fans when the fan unit case is installed in the inverter main body and has a tapered surface so that as the fan unit case is slid into the die-cast case, the cooling fans are spread right and left by the tapered surface, respectively, to fix the cooling fans.