CPC H02K 3/521 (2013.01) [H02K 3/522 (2013.01); H02K 7/145 (2013.01); H02K 2203/06 (2013.01)] | 10 Claims |
1. A power tool comprising:
a housing including a motor housing and a handle portion;
a motor control unit disposed within the handle portion;
a transmission assembly mounted forward of the motor housing; and
a motor housed inside the motor housing, the motor having a stator assembly and a rotor rotatably arranged inside the stator, the stator assembly comprising:
a stator core defining a plurality of poles and having an outer surface that is substantially cylindrical formed around a longitudinal axis of the motor;
at least one magnet wire wound on the plurality of poles forming a plurality of stator windings; and
a bus bar comprising: a non-conductive mount arranged on the outer surface of the stator core, and a plurality of conductive terminals arranged to receive electric power from a power source and supply electric power to a plurality of phases,
wherein each of the conductive terminals includes: a main portion at least partially mounted on the non-conductive mount, a tang portion extending angularly from a first longitudinal end of the main portion, and a connection tab extending angularly from a second longitudinal end of the main portion, wherein the first longitudinal end of the main portion is rearward of the second longitudinal end relative to the transmission assembly, at least a contact portion of the at least one magnet wire is wrapped around the tang portion and fused to make an electric connection to the conductive terminal, and the connection tab is arranged to makes electric contact with a power wire supplying electric power to the motor, wherein the power wire is received from the motor control unit through the handle portion and connects to the connection tab without traversing rearwardly past the second longitudinal end of the main portion.
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