Air conditioning blower motor unit

1. An air conditioning blower motor unit adapted to rotate a blower fan by a brushless motor having a stator on which there are sequentially provided a U-phase electromagnetic coil region forming a U-phase, a V-phase electromagnetic coil region forming a V-phase, and a W-phase electromagnetic coil region forming a W-phase, each of the electromagnetic coil regions being formed by winding a wire material on insulating materials that cover a stator core, and a rotor in which permanent magnets are retained and that rotates along a circumferential edge of the stator, the air conditioning blower motor unit comprising:

a metallic bearing retaining member retained by the stator, and rotatably supporting a rotary shaft of the brushless motor;

a circuit substrate on which there is provided an electronic component adapted to control the brushless motor;

a support plate on which the bearing retaining member and the circuit substrate are retained at respective positions that do not overlap one another when viewed in plan;

three stator side terminal members delta-connected with electro-deposited parts that are led out from a boundary region between the U-phase electromagnetic coil region and the V-phase electromagnetic coil region, a boundary region between the V-phase electromagnetic coil region and the W-phase electromagnetic coil region, and a boundary region between the W-phase electromagnetic coil region and the U-phase electromagnetic coil region, on end surfaces of the insulating materials on a side facing toward the circuit substrate, and the three stator side terminal members are disposed in surrounding relation to the bearing retaining member; and

three substrate side terminal members provided on the circuit substrate and electrically connected to the electronic component; and

three flexible wire members that electrically connect the three substrate side terminal members and the three stator side terminal members respectively while three substrate side terminal members and the three stator side terminal members are capable of being relatively oscillated, thereby forming an energizing circuit from the circuit substrate to the U-phase electromagnetic coil region, the V-phase electromagnetic coil region, and the W-phase electromagnetic coil region;

wherein lengths of the three flexible wire members are equivalent to each other, and an end of one of the flexible wire members is arranged in a direction that is separated from the bearing retaining member more so than the remaining two flexible wire members.

2. The air conditioning blower motor unit according to claim 1 , further comprising an insulative support member made of resin that is disposed on the circuit substrate, and in which portions of the three substrate side terminal members are embedded;

wherein remaining portions of two of the substrate side terminal members protrude from a side of the insulative support member that is in close proximity to the bearing retaining member, and a remaining portion of the remaining substrate side terminal member protrudes from a side of the insulative support member that is distanced from the bearing retaining member; and

the flexible wire member, the end of which is arranged in a direction that is separated from the bearing retaining member more so than the two flexible wire members, crosses over the insulative support member when the circuit substrate is viewed in plan.

3. The air conditioning blower motor unit according to claim 1 , wherein the flexible wire members are twisted wires in which a plurality of fine wires are twisted.

4. The air conditioning blower motor unit according to claim 1 , wherein an insulative coating is provided on the flexible wire members.