Electromagnetic relay

摘要

An electromagnetic relay, in particular a motor vehicle relay, contains a magnet yoke, a relay coil, a hinged armature which is pivotable about an axis of rotation and on which a moving contact, as working or switchover contact, is retained relative to at least one fixed contact. A piezo actuator is provided, which keeps the working or switchover contact closed when the relay coil is de-energized as a result of the actuation of the piezo actuator.

主权项

1. An electromagnetic relay, comprising:
a magnet yoke having a clamping gap formed therein; a relay coil; a moving contact; a first fixed contact; a hinged armature being pivotable about a rotation axis and on which said moving contact being held relative to at least said first fixed contact; a piezo actuator which, as a result of being actuated, keeps said moving contact closed when said relay coil is de-energized; a tension element having a free side, said tension element being held on one side of said hinged armature, and being routed by way of said free side into said clamping gap and, as a result of said piezo actuator being actuated, is held in said clamping gap in a force-fitting manner; and a lever transmission device for converting a force stroke, which is generated by said piezo actuator as a result of being actuated, into a clamping stroke for fixing said tension element, which is held on a hinged armature side and/or on a moving contact side, in a releasable and clamped manner.