Rotor for use in motor with cooling function
A rotor for use in a motor with a cooling function includes a main body and a plurality of cooling blades formed to be integrated with the main body. The main body includes attachment reinforcing openings and is formed by pressing soft magnetic powder. The cooling blades are formed through injection molding into the respective attachment reinforcing openings of the main body. Alternatively, the cooling blades are integrally formed with the main body by pressing along with the main body.
1 . A rotor for use in a motor with a cooling function, the rotor comprising:
a main body formed by pressing soft magnetic powder; and
a plurality of cooling blades formed to be integrated with the main body to produce a wind for cooling when the rotor rotates.
2 . The rotor of claim 1 , wherein the main body have a plurality of attachment reinforcing openings, the cooling blades being formed to protrude through injection molding into the respective attachment reinforcing openings of the main body to be integrated with the main body.
3 . The rotor of claim 2 , wherein the individual attachment reinforcing openings are formed on both upper and lower surfaces of the main body; and the cooling blades are located along a half-diameter direction of the main body and arranged around a central point of rotation of the main body.
4 . The rotor of claim 2 , wherein the attachment reinforcing openings are formed on given outer surface portions of the main body; and the cooling blades are located in parallel to a central rotation axis of the main body and arranged along the outer surface of the main body.
5 . The rotor of claim 2 , wherein the cooling blades are made of injection molding material including synthetic resin.
6 . The rotor of claim 1 , wherein the cooling blades are integrally formed with the main body by pressing the soft magnetic powder along with the main body.
7 . The rotor of claim 6 , wherein the cooling blades are located on both upper and low surfaces of the main body along a half-diameter direction and arranged around a central point of rotation of the main body.
8 . The rotor of claim 6 , wherein the cooling blades are located on given outer surface portions of the main body in parallel to a central rotation axis and arranged along the outer surface of the main body.