Patent ID: 7939977
Filing Date: 2011-05-10
Classification: H02K

Abstract:
1. A rotor for a rotary electrical device, comprising a rotor core, a coil arranged on the rotor core, and a coil support member arranged between parts of the coil adjacent to each other on the rotor core, wherein the coil support member has two pairs of first surfaces, the first surfaces of each of the two pairs face closely to corresponding ones of the parts of the coil to prevent the parts of the coil from contacting each other and are juxtaposed with each other in a longitudinal direction of the coil, and the coil support member further has a pair of second surfaces facing to respective ones of the parts of the coil, arranged between the first surfaces of respective ones of the two pairs in the longitudinal direction of the coil and indented with respect to the first surfaces of the respective ones of the two pairs to form respective spaces between the second surfaces and the parts of the coil; and wherein a thermal conductivity of a material forming the second surfaces is higher than a thermal conductivity of a material forming the first surfaces.