| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electric hub unit which is easy to enlarge a bearing while keeping heat radiation effect. <P>SOLUTION: In the electric hub unit 1, a first resin mold part M1, which seals a stator 13, is attached with pressure to a motor case 10, and also a second resin mold part M2, which seals a circuit board 7, is attached with pressure to the motor case 10, and a second bearing 31, which is exposed to outside, is abutted upon the motor case 10. Accordingly, the heat generated in the stator 13 is transmitted to the motor case 10 via the first resin mold part M1, and the heat generated by electronic parts on the circuit board 7 is transmitted to the motor case 10 via the second resin mold part M2. Then, the heat collected to the motor case 10 is radiated to outside after being transmitted to the second bearing 31. For the electronic hub unit 1 in such a structure, it is easy to enlarge the second bearing 31, and besides the heat radiation effect can be mode larger, as the second bearing 31 is enlarged. <P>COPYRIGHT: (C)2011,JPO&INPIT |
