Patent ID: 9305730
Filing Date: 2016-04-05
CPC Classification: H01H

Claim Text:
1. A remote control relay, comprising: a polarized electromagnet including a coil frame, a coil wound around the coil frame, and a plunger, the polarized electromagnet being configured to, when a current is applied to the coil, move the plunger between a first stop position and a second stop position in a forward and backward movement direction with respect to the coil frame; and an opening/closing mechanism including a contact point unit and configured to open and close the contact point unit in response to a movement of the plunger, wherein the polarized electromagnet further includes: a pair of armatures into which opposite ends of the plunger in the forward and backward movement direction are respectively inserted, the pair of armatures being fixed to the plunger; a yoke to which one of the pair of armatures becomes closer than the other when the plunger is at the first stop position; a permanent magnet whose one magnetic pole makes contact with the yoke; an auxiliary yoke which makes contact with the other magnetic pole of the permanent magnet, the auxiliary yoke becoming closer to the other of the pair of armatures than the one of the pair of armatures when the plunger is at the first stop position; and a gap maintaining portion configured to maintain a gap between the other of the pair of armatures and the auxiliary yoke when the plunger is at the first stop position, and wherein when the plunger is at the first stop position, the other of the pair of armatures and the auxiliary yoke comes close to each other with the gap therebetween, and a space is provided between the one of the pair of armatures and the yoke.