Motor including busbar holder and busbars

摘要

In a busbar unit, which is a distributing device arranged to supply electrical currents to coils, a busbar holder is arranged to support coil connection busbars and sensor connection busbars. Conductor wire connection portions of the coil connection busbars are exposed on both axial sides and welded to a conductor wire defining the coils. The sensor connection busbars are combined with a plurality of electronic components to define a Hall IC circuit designed to output and receive electrical signals to or from Hall ICs. Sensor connection portions of the sensor connection busbars are exposed on both axial sides, and welded to terminals of the Hall ICs. Electronic component connection portions of the sensor connection busbars are exposed on both axial sides, and welded to the electronic components.

主权项

1. A motor arranged to select a gear of a transmission installed in a vehicle or to drive a clutch, the motor comprising:
a rotor arranged to rotate about a rotation axis; a stator core including a plurality of teeth; a plurality of coils, each defined by a conductor wire wound around a separate one of the teeth; and a busbar unit arranged to supply a drive current to each coil; wherein the busbar unit includes:
a plurality of coil connection busbars, each including a conductor wire connection portion connected with an end portion of the conductor wire;a busbar holder made of an insulating material and arranged to support the plurality of coil connection busbars, the busbar holder includes a plurality of sensor holders, each arranged to hold a separate one of a plurality of sensors, the plurality of sensors being arranged to detect a rotational position of the rotor; anda plurality of sensor connection busbars housed in the busbar holder and arranged to either supply a drive current to ones of the plurality of sensors held in the respective sensor holders, or to output an output signal from ones of the plurality of sensors; each conductor wire connection portion is welded to a corresponding end portion of the conductor wire; and at least one of the plurality of sensor connection busbars includes a plurality of sensor connection portions each directly physically and electrically connected with a terminal of a separate one of the plurality of sensors.