Patent ID: 9224545
Filing Date: 2015-12-29
Classification: H01H

Abstract:
1. An electric contactor, in particular to be used in roadways, comprising: a stator; an armature, the armature being connected with a contact region and movable in an axial direction of the armature, during a switching-on operation and/or a switching-off operation of the contactor, from a first to a second position, the contact region being connected, in at least one of the positions, with a counter-contact region for closing an electric circuit; a pushing device, comprising a flywheel, the pushing device being rotatable relative to the armature, and the pushing device at least temporarily pushing the armature supportively during the movement from the first to the second position of the switching-on and/or switching-off operation; and a translation unit, wherein the armature and the pushing device are connected to one another via the translation unit, wherein the translation unit comprises a helical gearing with a male threaded portion and a female threaded portion, one of the threaded portions being connected with the armature, and the other threaded portion being connected with the pushing device, wherein the threaded portion of the helical gearing connected with the pushing device is held axially with respect to a housing of the contactor, wherein the helical gearing is configured such that the axial movement of the armature is translated into a rotational movement of the pushing device, wherein the helical gearing is not self-locking.