Patent ID: 11942297
Assignee: OMRON CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A relay, comprising:
a movable contact piece extending in a longitudinal direction and having a longitudinal center, the movable contact piece including a first movable contact;
a fixed contact disposed opposite to the first movable contact;
a drive device configured to move the movable contact piece in a moving direction including a contact direction in which the first movable contact makes contact with the fixed contact and a separation direction in which the first movable contact is separated from the fixed contact;
a magnet for arc extinguishing, the magnet being arranged so as to apply a Lorentz force in a first extension direction to an arc generated between the first movable contact and the fixed contact;
a fixed terminal including a contact support portion configured to mount the fixed contact thereon, and an intermediate portion configured to apply a Lorentz force to the arc in a second extension direction different from the first extension direction when an electric current flows; and
a wall portion disposed apart from the movable contact piece in the first extension direction by an arc-extinguishing space,
wherein the wall portion includes 1) a first wall surface disposed to face the arc-extinguishing space and disposed opposite to the first movable contact and the fixed contact in the first extension direction, and 2) a second wall surface disposed to face the arc-extinguishing space and disposed downstream in the second extension direction with respect to the first wall surface, a first distance from the movable contact piece to the first wall surface differing from a second distance from the movable contact piece to the second wall surface,
the second distance from the movable contact piece to the second wall surface is larger than the first distance from the movable contact piece to the first wall surface,
the first extension direction is a width direction of the movable contact piece intersecting the longitudinal direction of the movable contact piece, and
the second extension direction is a direction toward the longitudinal center of the movable contact piece in the longitudinal direction of the movable contact piece.