Motor-driven compressor

Abstract

A compressor includes a housing, a compression mechanism and an electric motor driving the compression mechanism. The electric motor includes a stator fixed to the housing, a rotary shaft rotatably supported by the housing, a rotor that is fixed on the rotary shaft and has a rotor core made of a plurality of laminated steel sheets, a magnet insertion hole formed through the rotor core, a permanent magnet loosely fitted in the magnet insertion hole, a first clearance formed between inner surface of the magnet insertion hole and outer surface of the permanent magnet, a second clearance formed between end surface of the rotor core and surface of the permanent magnet in the axial direction of the rotor core and resin filled in the first clearance and the second clearance so as to surround entire surface of the permanent magnet.

Dependencies are inferred from the claim text.