Electromagnetic relay

摘要

An electromagnetic relay includes an electromagnet block, a pair of fixed contacts, a movable spring, and a stopper. The electromagnet block includes an exciter coil and an armature. The movable spring includes a fixed portion and a movable portion. The fixed portion is fixed to the electromagnet block. The movable portion contacts fixed contact and is separated from the fixed contacts in response to turning on and off of an energizing of the exciter coil. The stopper configured to restrict a movement of the movable portion. The armature is fixed to the movable portion and is displaced unitarily with the movable portion. The movable spring is configured to, upon turning on the energizing of the exciter coil, cause the movable portion to move, by magnetic force, in an approaching direction in which the movable portion approaches the fixed contacts with the fixed portion functioning as a fulcrum, and contact the fixed connection portions. The movable spring is configured to, upon turning off the energizing of the exciter coil, cause the movable portion to be separated, by restoring force, from the fixed contacts in a separating direction in which the movable portion is separated from the fixed contacts. The stopper is configured to, upon turning on the energizing of the exciter coil, contact the movable portion and reduce a moving speed of the movable portion in the approaching direction before the movable portion contacts the fixed contacts. The stopper is configured to, upon turning off the energizing of the exciter coil, contact the armature and reduce the moving speed of the movable portion in the separating direction.

主权项

1. An electromagnetic relay comprising:
an electromagnet block including an exciter coil and an armature; a pair of fixed contacts; a movable spring including a fixed portion and a movable portion, the fixed portion being fixed to the electromagnet block, the movable portion contacting the pair of fixed contacts and being separated from the pair of fixed contacts in response to turning on and off of an energizing of the exciter coil; and a stopper configured to restrict a movement of the movable portion, wherein the armature is fixed to the movable portion and is displaced unitarily with the movable portion, wherein the movable spring is configured to:
upon turning on the energizing of the exciter coil, cause the movable portion to move, by magnetic force, in an approaching direction in which the movable portion approaches the pair of fixed contacts with the fixed portion functioning as a fulcrum, and contact the pair of fixed connection portions; andupon turning off the energizing of the exciter coil, cause the movable portion to be separated, by restoring force, from the pair of fixed contacts in a separating direction in which the movable portion is separated from the pair of fixed contacts, and wherein the stopper is configured to:
upon turning on the energizing of the exciter coil, contact the movable portion and reduce a moving speed of the movable portion in the approaching direction before the movable portion contacts the pair of fixed contacts; andupon turning off the energizing of the exciter coil, contact the armature and reduce the moving speed of the movable portion in the separating direction.