| 摘要 |
A bobbin structure of a stepping motor is provided to obtain high endurance as to vibration or external impact, by improving reliability during an assembly process. A number of position determination protrusions(121b) have a through-hole on a center part, and have a flange(121a) on both sides, and are formed on an outer surface of the flange in a body. An elect wall part(121c) and a terminal part(121d) are formed on an edge of the flange in a body. A connection part is formed on the terminal part. The connection part is constituted with a connection protrusion(121f) and a connection groove(121g). When the bobbin case is connected with each other, the connection protrusion of one bobbin case is connected to the connection groove of another bobbin case.
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