Patent ID: 8222779

Claim:
A stepping motor comprising: a rotor assembly comprising a magnet and rotatably disposed around a rotation axis; a stator assembly comprising a first stator unit and a second stator unit which are disposed around the rotor assembly and axially coupled to each other and each of which comprises a yoke and a winding to excite the yoke, wherein the yoke comprises a circular ring shaped base portion and a plurality of pole teeth disposed along an inner circumference of the base portion and bent in an axial direction, and wherein the yoke of the first stator unit and the yoke of the second stator unit are in contact with each other thus defining an interface plane therebetween; and a terminal structure disposed at an outer circumference of the stator assembly along the interface plane and comprising a terminal block cluster to hold a plurality of terminals which pass to the winding an electrical signal from a driving circuit disposed externally and each of which comprises a first terminal portion to which one of two wire ends of the winding is connected, and a second terminal portion which is disposed substantially parallel to the first terminal portion and to which the driving circuit is connected, wherein the plurality of terminals are arranged in a line along a direction substantially orthogonal to the axial direction, and wherein the first terminal portion and the second terminal portion of each of the plurality of terminals are aligned along the axial direction.