| 摘要 |
PROBLEM TO BE SOLVED: To easily fit an iron core by providing a bridge between both opposite parts in a coil bobbin that has the opposite parts where coil winding parts are fitted around the iron core in a pair. SOLUTION: In a coil bobbin, a coil terminal 4 is formed in one piece with a coil bobbin 1, a coil is wound, and a coil 2 is formed. An iron core 3 is inserted along both opposite parts 1d of the coil bobbin 1 and a bridge 1e from the tip part for passing through both collar parts 1a and 1b, at the same time, the tip part of the iron core 3 is allowed to pass through a through hole 5c of one piece 5a of yoke 5 for fixing by spin caulking, and a part whose section is in U shape of an energizing spring 6 is successively fitted to a fitting part 1g of the coil bobbin 1. Then, an armature is inserted between an energizing piece 6c of the spring 6 and a collar part 3a that is the other end of the yoke 2 and the base edge part of the iron core 3 for arrangement, thus securing opposing space in both opposing parts 1d being bridged by the part 1e, and hence easily fitting the iron core 3.
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