MOTOR DEVICES

Abstract

[Problem] To provide a motor device that is capable of protecting the heat from a motor and providing reliable insulation protection.[Solution] The motor device (1) includes: a stator (10) around which a coil (33) is wound; a rotor (11) provided rotatably with respect to said stator (10); a motor casing (14), which accommodates said stator (10) and said rotor (11); a bearing (22R) which rotatably supports a rotational shaft (12) of said rotor (11); a bearing casing (19), which holds said bearing (22R); a substrate (17), which is disposed at an end portion on a side opposite said stator (10), with said bearing casing (19) of said motor casing (14) clamped therebetween, and provides rotational control of said rotor (11); and a heat shield (18), which is disposed between said bearing casing (19) and said substrate (17) and prevents heat generated in said motor casing (14) from being transferred to said substrate (17).The bearing casing (19) has a bore portion (53) into which a busbar terminal (51) is inserted, and an inner side surface of the bore portion (53) is covered with a heat shield (18).