Motor compressor

Abstract

An object is to maintain housings at equal potentials. Facing insertion holes are formed on mating surfaces of a front housing and a center housing. One end and the other end of a spring pin are inserted into the insertion holes, respectively, and an outer peripheral surface is pressed against inner peripheral surfaces of the insertion holes by an elastic force.

1 . A motor compressor comprising:
 a first housing and a second housing each made of metal, and configured to be insulated from each other by interposing a gasket between mating surfaces, in which facing insertion holes are formed in portions of the mating surfaces where the gasket is not provided; and   an insertion member made of metal, and having one end and the other end which are inserted into the insertion holes, respectively, and an outer peripheral surface which is pressed against inner peripheral surfaces of the insertion holes by an elastic force.   
     
     
         2 . The motor compressor according to  claim 1 , wherein
 the insertion member is a spring pin.   
     
     
         3 . The motor compressor according to  claim 1 , wherein
 the insertion member is used for positioning in a circumferential direction when fixing the first housing and the second housing.   
     
     
         4 . The motor compressor according to  claim 1 , further comprising:
 a third housing made of metal, and configured to be fastened to the first housing by a bolt with the second housing interposed between the first housing and the third housing, and be insulated from the second housing by placing a gasket on a mating surface with the second housing, wherein   the second housing includes an inserting hole having a diameter larger than that of the bolt.   
     
     
         5 . The motor compressor according to  claim 2 , wherein
 the insertion member is used for positioning in a circumferential direction when fixing the first housing and the second housing.   
     
     
         6 . The motor compressor according to any one of  claim 2 , further comprising:
 a third housing made of metal, and configured to be fastened to the first housing by a bolt with the second housing interposed between the first housing and the third housing, and be insulated from the second housing by placing a gasket on a mating surface with the second housing, wherein   the second housing includes an inserting hole having a diameter larger than that of the bolt.   
     
     
         7 . The motor compressor according to  claim 3 , further comprising:
 a third housing made of metal, and configured to be fastened to the first housing by a bolt with the second housing interposed between the first housing and the third housing, and be insulated from the second housing by placing a gasket on a mating surface with the second housing, wherein   the second housing includes an inserting hole having a diameter larger than that of the bolt.   
     
     
         8 . The motor compressor according to  claim 5 , further comprising:
 a third housing made of metal, and configured to be fastened to the first housing by a bolt with the second housing interposed between the first housing and the third housing, and be insulated from the second housing by placing a gasket on a mating surface with the second housing, wherein   the second housing includes an inserting hole having a diameter larger than that of the bolt.