| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technology which efficiently radiates heat generated from a rotor core and suppresses vibrations which becomes a problem of a stepping motor. <P>SOLUTION: A metal shaft 108 is fixed in the rotation center of a rotor 110 including rotor cores 111, 112, and a metal disc like plate 116 is fixed to a portion of a bracket 105 of the shaft which protrudes to the exterior. The rotor cores 111, 112 generates heat due to iron loss during driving, however, the heat is transmitted from the shaft 108 to the disc like plate 116 and is radiated from the disc like plate 116. The disc like plate 116 functions as an inertial load and has a function that suppresses vibrations in addition to the contribution to the heat radiation. <P>COPYRIGHT: (C)2013,JPO&INPIT |
