Patent ID: 8651534

Claim:
A device for locking at least one leaf of a leaf installation, the device comprising: a first locking element comprising a first latching element at an end of the first locking element; and a second locking element adapted to be stationarily disposed relative to the leaf installation and comprising a second latching element at an end of the second locking element facing the first latching element, the second latching element being configured to be brought into a latching and operative engagement with the first latching element; wherein the first locking element is adapted to move correspondingly to a movement of the at least one leaf, whereby the first locking element is moved translationally into one of a locking position towards the second locking element and an unlocking position away from the second locking element; and wherein one of the first and second locking elements comprises an activating element, which is operable between a blocking position to allow the latching and operative engagement of the first and second latching elements and a release position to prevent the latching and operative engagement, wherein one of the first and second latching elements has a latching projection, and wherein the other of the first and second latching elements has a latching part corresponding to the latching projection, wherein the latching part comprises a first reach-through part, which has a first latching opening extending end-to-end in the first reach-through part and is movable at one of an acute and right angles with regard to a translational path of movement of the latching projection; wherein, in the release position, the first latching opening is positioned to allow the latching projection to freely move through the first latching opening along the translational path of movement of the latching projection; and wherein, in the blocking position and as long as the latching projection passes through the first latching opening in the locking position, the first latching opening is positioned to, at least to a predetermined degree, prevent the latching projection from moving away from the first latching opening into a direction of the first locking element, so that the latching projection is in the latching and operative engagement with the first latching opening while latching the latching projection from behind.