| 摘要 |
An electromagnetic solenoid having an electromagnetic coil, a fixed iron core, a movable iron core, and a spring coil. The spring coil, arranged between the fixed and the movable iron core, supplies a spring force to the movable iron core toward an opposite direction of the fixed iron core along the axial direction. A magnetic attraction surface and a fitting part are formed in at least one of the fixed iron core and the movable iron core. The magnetic attraction surface is contacted with the fixed iron core when the movable iron core reaches the fixed iron core. An outer peripheral surface of the fitting part, apart from the magnetic attraction surface by a predetermined distance along the axial direction, is engaged with the spring coil. The most outer peripheral part of the magnetic attraction surface is positioned inside rather than the most outer peripheral part of the fitting part.
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