Blocking device for a damper drive with a transmission element rotating when the damper drive is actuated, wherein the blocking device , when triggered, is irreversibly transferrable from an initial state into an alternative blocking state, and the blocking device comprises: - a first blocking element and a second blocking element , wherein the first blocking element is movably mounted and is movable from a release position of the first blocking element , adopted in the initial state, in the direction of a blocking position of the first blocking element , and wherein the second blocking element is movably mounted separately from the first blocking element and is movable and from a release position of the second blocking element , adopted in the initial state, in the direction of a blocking position of the second blocking element , wherein the first blocking element and the second blocking element are each designed, in their respective release position, to allow a rotating movement of the transmission element and, in their respective blocking position, to block a rotating movement of the transmission element by engagement; - a drive device , wherein the drive device acts on the first blocking element and the second blocking element with a force in the direction of their respective blocking position; - a retaining device , wherein the retaining device , in the initial state, holds the first blocking element and the second blocking element , in their respective release position, counter to the force exerted by the drive device on the first blocking element and the second blocking element ; - a trigger device , wherein the trigger device irreversibly deactivates the retaining device when a triggering temperature is exceeded and/or when a triggering heat is applied, and the blocking device is thereby triggered. - a first blocking element and a second blocking element , wherein the first blocking element is movably mounted and is movable from a release position of the first blocking element , adopted in the initial state, in the direction of a blocking position of the first blocking element , and wherein the second blocking element is movably mounted separately from the first blocking element and is movable and from a release position of the second blocking element , adopted in the initial state, in the direction of a blocking position of the second blocking element , wherein the first blocking element and the second blocking element are each designed, in their respective release position, to allow a rotating movement of the transmission element and, in their respective blocking position, to block a rotating movement of the transmission element by engagement; - a drive device , wherein the drive device acts on the first blocking element and the second blocking element with a force in the direction of their respective blocking position; - a retaining device , wherein the retaining device , in the initial state, holds the first blocking element and the second blocking element , in their respective release position, counter to the force exerted by the drive device on the first blocking element and the second blocking element ; - a trigger device , wherein the trigger device irreversibly deactivates the retaining device when a triggering temperature is exceeded and/or when a triggering heat is applied, and the blocking device is thereby triggered. <EOS>