Electromagnetic contactor

摘要

An electromagnetic contactor includes a contact mechanism having a pair of fixed contacts disposed to maintain a predetermined interval in a longitudinal direction, and a movable contact disposed above the pair of fixed contacts, the movable contact contacting to and detaching from the pair of fixed contacts. Each of the pair of fixed contacts has a fixed contact portion, the movable contact extends in a longitudinal direction thereof and has a pair of movable contact portions contacting the pair of fixed contacts, and the movable contact is disposed so as to move in a vertical direction thereof on a connecting shaft fixed to a movable plunger and is pressed down by a biasing force of a contact spring in a downward direction thereof on a central portion of the movable contact in the longitudinal direction, the movable contact being held on the connecting shaft.

主权项

1. An electromagnetic contactor, comprising:
a contact mechanism having a pair of fixed contacts disposed to maintain a predetermined interval in a longitudinal direction thereof; and a movable contact disposed above the pair of fixed contacts, the movable contact contacting to and detaching from the pair of fixed contacts, wherein each of the pair of fixed contacts has a fixed contact portion, the movable contact extends in a longitudinal direction thereof and has a pair of movable contact portions contacting the pair of fixed contacts, and the movable contact is disposed so as to move in a vertical direction thereof on a connecting shaft fixed to a movable plunger and is pressed down by an urging force of a contact spring in a downward direction thereof on a central portion of the movable contact in the longitudinal direction thereof, the movable contact being held on the connecting shaft, a plate spring member, extending in a longitudinal direction thereof and having, in vicinities of two outer ends in the longitudinal direction of the plate spring member, a pair of urging force application portions that applies a predetermined urging force in the downward direction to the pair of movable contact portions, is attached to the connecting shaft, and the plate spring member includes an attachment plate portion arranged between the contact spring and the movable contact so that the movable contact is urged by the urging force of the contact spring and the plate spring member.