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AssigneeHolec Systemen en Componenten B.V.
InventorsArend J. W. Lammers, Gerhardus L. Nitert, Gerrit W. Hendriks
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A drive mechanism for a circuit breaker or power switch made up of at least one switching unit and comprising a biasing mechanism which can act upon the switching unit, with actuating mechanism for biasing the biasing mechanism, drive mechanism for driving the switching unit under the influence of the energy stored in the biasing mechanism, and mechanism for resetting the switching unit from the driven state. A coupling mechanism in the form of a movement-direction-dependent carrier mechanism is provided whereby the biasing mechanism is brought in its biased state into engagement with the drive mechanism for driving the switching unit and in the driven state of the switching unit the engagement of the biasing mechanism and the drive mechanism is released for resetting the switching unit without operation of the actuating mechanism, and the biasing mechanism and the drive mechanism act upon each other only in the direction of movement opposite to the biasing direction. To improve the "hammer" effect during separation of the contacts of the switching unit, the drive mechanism is made mechanically more rigid near the action point with the switching unit through a selective mass increase.
A drive mechanism for an electric switch made up of at least one switching unit, comprising a biasing mechanism in the form of a transition point or overturn mechanism which can act upon the at least one switching unit, actuating means for tensioning the biasing mechanism, drive means for driving the at least one switching unit under the influence of the energy stored in the biasing mechanism, means for resetting the at least one switching unit from a driven state, and a coupling mechanism for coupling the biasing mechanism in a biased state thereof with the drive means, for driving the at least one switching unit, and for releasing the coupling of the biasing mechanism and the drive means when the at least one switching unit is in the driven state, wherein the coupling mechanism is designed to bias the biasing mechanism by the actuating means from a rest position to a position before the transition point or dead center thereof, and the drive means and the coupling mechanism form a movement-direction-dependent carrier mechanism, such that the biasing mechanism and the drive means act upon each other only in a direction of movement opposite to a direction in which the biasing mechanism operates, for driving the at least one switching unit.
A hammer mechanism, for use in a drive mechanism for an electric switch provided with at least one switching unit, comprising a switching arm for driving the at least one switching unit, in which the switching arm from a driven state can act upon a resetting stop for resetting the at least one switching unit only after traveling a certain distance, the resetting stop is in the form of a block with an approximately v-shaped cross-section, of which a tapering end froms a linear engagement with the switching arm, wherein a mass of the switching arm is increased in a vicinity of an action point of the switching arm and the resetting stop.
A single-phase or polyphase electric circuit breaker or power switch provided with at least one switching unit, comprising a biasing mechanism in the form of a transition point or overturn mechanism which can act upon the at least one switching unit, actuating means for biasing the biasing mechanism, drive means, for driving the at least one switching unit under the influence of the energy stored in the biasing mechanism, means for resetting the at least one switching unit from the driven state, and a coupling mechanism for coupling the biasing mechanism in its biased state with the drive means, for driving the at least one switching unit, and for releasing the coupling of the biasing mechanism and the drive means when the at least one switching unit is in the driven state, wherein the coupling mechanism is designed to bias the biasing mechanism by the actuating means from a rest position to before a transition point or dead center position, and the drive means and the coupling mechanism form a movement-direction-dependent carrier mechanism, such that the biasing mechanism and the drive means act upon each other only in a direction of movement opposite to a biasing direction, for driving the at least one switching unit.
Dependencies are inferred from the claim text.