| 摘要 |
<p>The present invention provides an electromagnet device (20) comprising of a horizontal portion (53) of a yoke (50) arranged near one end portion of an iron core (40), a movable iron piece (60) which pivotably supported on a leading end edge portion of a vertical portion (51) of the yoke (50), an end portion of the movable iron piece (60) adapted to be attracted to a magnetic pole portion (42) by a main magnetic circuit (M2), the magnetic pole portion (42) is arranged in the other end portion of the iron core (40). The main magnetic circuit (M2) is formed by applying a voltage to a coil (31) wound around a periphery of the iron core (40) and an auxiliary magnetic circuit (M1) formed in parallel with the main magnetic circuit (M2), the auxiliary circuit (M1) comprises a permanent magnet (21) is arranged near the one end portion of the iron core (40) and a magnetic resistance portion, in which a magnetic flux of the permanent magnet (21) is magnetically saturated.</p> |
