Patent ID: 8555748

Claim:
An electric motor comprising: a core unit which includes: a plurality of core assemblies annually fixed to a case, each core assembly wound with a coil; and a first terminal connecting one end portion of each coil; an annular bus ring which is attached to the core unit and holds a plurality of power supply lines, the bus ring including a first surrounding portion which opposes each of the core assemblies and surrounds a second terminal connecting the other end portion of each coil with any one of the power supply lines; a plurality of supporting members which are attached to the core assemblies, respectively, each supporting member including a second surrounding portion which surrounds a corresponding first terminal, wherein each supporting member and a corresponding first surrounding portion form a terminal accommodating portion having a box shape with a bottom; and a plurality of attachment members, each of which includes: a first holding portion for holding a first sensor for measuring a temperature of an oil stored in the case; a second holding portion for holding a second sensor for measuring a temperature of the coils; and a fixing portion which is fixed to a portion of the terminal accommodating portions, wherein, among the plurality of attachment members, an attachment member holding the first sensor in the first holding portion is fixed to a portion of one of the terminal accommodating portions by the fixing portion thereof such that the first sensor is positioned at a first position for measuring the temperature of the oil, at which the first sensor is soaked in the oil stored in the case, and wherein, among the plurality of attachment members, an attachment member holding the second sensor in the second holding portion is fixed to a portion of one of the terminal accommodating portions by the fixing portion thereof such that the second sensor is positioned at a second position for measuring the temperature of the coils between adjacent terminal accommodating portions which are not soaked in the oil.