| 摘要 |
PROBLEM TO BE SOLVED: To provide a stepping motor in such a structure that backlash is unlikely to occur between a bobbin and a member configuring a stator.SOLUTION: The stepping motor comprises: two stator members (an inner stator 240 and an outer stator 220) which are positioned at front and rear sides in an axial direction; and a bobbin 330 which is positioned between the stator members and around which a stator coil 231 having the same axial structure as an axial center is wound. The outer stator 220 includes a circular ring part 221 in a plate shape and an outer cylinder part 222 in a cylindrical shape axially extending from an outer edge of the circular ring part 221. The bobbin 330 is being accommodated in the outer cylinder part 222 and in such an accommodated state, the bobbin 330 keeps contact while being pushed to the circular ring part 221 of the outer stator 220 by an axial energization force being generated by a repulsive force caused by deformation of the inner stator 240.SELECTED DRAWING: Figure 7 |
