Patent ID: 7663277

Claim:
An inner-rotor-type brushless motor comprising a stator fixedly disposed within a motor casing; a rotor fixed to a rotation shaft; and a bus bar which connects together U-phase, V-phase, and W-phase windings wound on a stator magnetic pole core and connects them to output wires, wherein the U-phase, V-phase, and W-phase windings are each composed of a plurality of coils which are wound around stator magnetic poles and are connected to form a Y-connection or a double Y-connection; the bus bar, which carries a sensor board including a position detection sensor fixed thereto, includes a generally circular bus bar body formed of a resin, and bus bar legs formed integrally with the bus bar body and used for fixing the bus bar; the bus bar includes, as conductive members for connecting the windings, only three external terminals connected to first ends of the windings and one Y-connection terminal for connecting second ends of the windings together; the first and second ends of the windings are pulled out to positions near winding-side terminal portions of the Y-connection and external terminals to which the first and second ends are to be connected, and are connected to the corresponding Y-connection and external terminals; the three winding-side terminal portions of the Y-connection terminal are disposed to be located adjacent to one another, the winding-side terminal portions of the three external terminals are disposed to be located adjacent to one another, and the Y-connection terminal and the external terminals are disposed to be located on one side on the circumference of the bus bar body, whereby the bus bar body has a circumferential region where the conductive members are not present; and the sensor board is attached such that the position detection sensor is located in the circumferential region where the conductive members are not present.