| 摘要 |
<p>PROBLEM TO BE SOLVED: To simplify the assembling work for enhancing the workability by holding a fixing core between a stepped part formed on the inner periphery of a cylinder and one side yoke so as to tightly hold the stepped part of the fixing core and the one side yoke. SOLUTION: A coil bobbin wherein a cylinder 2d having an opened one end the other bottomed end is provided with flanges 2e and 2f while a stepped part 2c is formed along the inner periphery of the cylinder 2d is used so as to insert a movable core 4, an operating member 5 and a push spring 6 into the cylinder 2d of the coil bobbin 2. Next, the larger part of a fixing core 7 is inserted into the stepped part 2c on the inner periphery of the cylinder 2d so as to hold the flanges 2e, 2f and the stepped part 2c of the fixing core 7 for connecting a pair of yokes 1. Finally, by this connection, the coil bobbin 2 and the fixing core 7 are held between the pair of yokes 1 through the intermediary of the stepped part of the fixing core 7, the stepped part 2c formed on the inner periphery of the cylinder 2d of the coil bobbin 2 and the flanges 2e, 2f furthermore making the stepped part of the fixing core 7 and one side yoke closely adhere to each other.</p> |
