Patent ID: 7053517

Claim:
A stepping motor comprising: a pair of stator yokes each having a plurality of pole teeth disposed in a comb-like arrangement; a bobbin disposed between the pair of stator yokes, wherein the bobbin comprises a cylindrical body, a first flange, and a second flange, each of the first and second flanges radially extending outward from the cylindrical body so that the bobbin forms a substantially squared U-shape in an axial cross-section thereof, and the bobbin further comprises a terminal block protruding from one of the first and second flanges; a coil wound around the cylindrical body of the bobbin; and a bobbin cover case disposed between the stator yokes and the bobbin, the bobbin cover case comprising an outer cover and an inner cover that overlap each other at an open mouth portion of the bobbin so as to increase a creepage distance between the stator yokes and the coil.