| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive motor actuator which can be assembled easily. SOLUTION: A stator of a stepping motor is made into a two-phase stack structure by laminating a material made by combining yokes 4 having the same shapes which are made by bending a plurality of rectangular outer periphery forming members 24 radially protruded to the outside in the radial direction of a doughnut-shaped sheet metal and a plurality of claw poles 25 radially protruded to the inside in the radial direction in the same direction, so that the outer periphery forming members 24 and the claw poles 25 are engaged with each other, thus forming a two-phase stack structure. Positioning between phases is executed by mutually fitting a positioning pin and a positioning hole formed to a bobbin via a positioning hole formed at the yoke. The stator core is composed by combining one kind of yoke. Accordingly, components are made to be used in common, and components made by drawing are eliminated. COPYRIGHT: (C)2005,JPO&NCIPI
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