Patent ID: 11942295
Assignee: TYCO ELECTRONICS (SHENZHEN) CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 24:
25. A relay, comprising:
a housing;
an electric contact system arranged in the housing, including:
a static contact with a static contact portion;
a movable contact with a movable contact portion; and
a rotating member on which the movable contact is mounted;

an electromagnetic system arranged in the housing and adapted to drive the rotating member to rotate and drive the movable contact to move between a closed position in which the movable contact is in electrical contact with the static contact and an opened position in which the movable contact is separated from the static contact;
a magnetic blowing arc-extinguish device, including:
a permanent magnet statically provided near the static contact and adapted to lengthen an electric arc between the static contact portion and the movable contact portion by an electromagnetic force to extinguish the electric arc; and
a magnetic yoke, the permanent magnet and the static contact are disposed in an accommodation space surrounded by the magnetic yoke; and

an isolation arc-extinguish device adapted to push the electric arc toward the permanent magnet and force the electric arc to move to a vicinity of the permanent magnet, the isolation arc-extinguish device including an arc-extinguishing sheet and is meshed with the rotating member, the isolation arc-extinguish device is rotated by the rotating member, the arc-extinguishing sheet is rotated out of a contact region of the movable contact portion and the static contact portion when the movable contact is rotated to the closed position to allow the movable contact portion to electrically contact the static contact portion, and the arc-extinguishing sheet is rotated into the contact region when the movable contact is rotated to the opened position to electrically isolate the movable contact portion from the static contact portion and cut off the electric arc, wherein, while the movable contact is rotated from the closed position toward the opened position, the arc-extinguishing sheet pushes the electric arc toward the permanent magnet to force the electric arc to move to the vicinity of the permanent magnet.