Patent ID: 9136053
Filing Date: 2015-09-15
Classification: H01F,H01H

Abstract:
1. A solenoid device comprising: a first electromagnetic coil for generating magnetic flux when current passes through the first electromagnetic coil; a first plunger and a second plunger, each of which moves backward and forward according to energization to the first electromagnetic coil; a first fixed core facing the first plunger in a backward-forward movement direction of the first plunger; a second fixed core facing the second plunger in a backward-forward movement direction of the second plunger; and a yoke, wherein the yoke, the first plunger, the first fixed core, the second plunger, and the second fixed core provide a magnetic circuit, in which the magnetic flux flows, wherein, when the first electromagnetic coil is not energized in a unenergization state, a first gap is formed between the first plunger and the first fixed core, and a second gap is formed between the second plunger and the second fixed core, wherein, when the first electromagnetic coil is energized in a energization state, the magnetic flux flows in a first magnetic circuit, provided by the first plunger, the first fixed core and the yoke, and a second magnetic circuit, provided by the first plunger, the first fixed core, the second plunger, the second fixed core and the yoke, wherein, when the first electromagnetic coil is energized in the energization state, the first plunger is attracted toward the first fixed core by magnetic force, which is generated by a flow of the magnetic flux in the first magnetic circuit, and the second plunger is attracted toward the second fixed core by magnetic force, which is generated by a flow of the magnetic flux in the second magnetic circuit, and wherein, while switching from the unenergization state to the energization state, the magnetic flux flowing in the first magnetic circuit passes through the first gap, and the magnetic flux flowing in the second magnetic circuit passes through the first gap and the second gap.