Abstract: An insulation seat of a slim reel-type brushless motor includes a ring-shaped bottom plate, an inner plate and an outer plate. The ring-shaped bottom plate has an opening. The inner plate is arranged around the opening. At least one upper locking element is protruded upwardly from the inner plate. At least one lower locking element is protruded downwardly from the inner plate. The upper locking element and the lower locking element are staggered. The outer plate is arranged around an outer periphery of the ring-shaped bottom plate. An accommodation space is defined by the ring-shaped bottom plate, the inner plate and the outer plate. A coil is disposed within the accommodation space. The at least one upper locking element of the inner plate is engaged with a first magnetic seat. The at least one lower locking element of the inner plate is engaged with a second magnetic seat.

Abstract: A stepping motor may include a rotor having a drive magnet and a stator having a drive coil wound in a tube shape and disposed on the drive magnet. The stator may include a first yoke, a second yoke, a plurality of first pole teeth, and a plurality of second pole teeth. The plurality of the first and second pole teeth may be alternately disposed in a circumferential direction of the rotor.

Abstract: A coil member such as a coil bobbin may include a cylindrical drum part around which a coil is to be wound in a circular shape. The cylindrical drum part is formed by two molding dies and a flat face part is formed on an outer peripheral face of the cylindrical drum part so that a space part is formed between an innermost circumferential face of the coil to be wound and the flat face part. The flat face part is formed so that the two molding dies are separated without pressing the outer peripheral face of the cylindrical drum part, and a joining part on the drum part which is formed by the two molding dies is located on the flat face part. The coil member may be only a coil bobbin, a coil bobbin with a terminal part, or a coil bobbin which is integrated with a stator core.