| 摘要 |
An electromagnet assembly for an electromagnetic apparatus has a ring member, a coil bobbin having an electrical wire wound a spool of the ring member, and a ring case. The ring member is disposed in an annular groove of the ring case. An opening is formed through the ring case adjacent to its closed end surface. A connector, which is disposed on the ring case and covers the opening, includes a case having a closed shape and a bottom, and a cap closing an open end of the case. Ends of the electrical wire and ends of a lead wire are joined in the connector. A projection portion is formed around a fringe portion of a first end surface of the cap and abuts an open end surface of the case. The cap is secured fixedly to the case after the projection portion is melted.
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