Mechanical closure having a locking device

A lock device, comprising

• a first connecting module and a second connecting module, wherein the first connecting module is configured to be arranged in a closing direction, on the second connecting module and in a closing position to mechanically engage with the second connecting module,
• wherein the first connecting module is detachable from the second connecting module by a movement of the first connecting module or of a part of the first connecting module in an opening direction with respect to the second connecting module, the opening direction being directed rotationally about the closing direction, and
• a locking device comprising a locking element operative to lock the first connecting module or the part of the first connecting module with respect to the second connecting module in said closing position such that, in a locked state of the locking element, a movement of the first connecting module or the part of the first connecting module relative to the second connecting module in the opening direction is prevented if the first connecting module and the second connecting module are positioned in the closing position,
• wherein one of the first connecting module and the second connecting module comprises at least one spring lock element and the other of first connecting module and second connecting module comprises at least one blocking piece, the at least one spring lock element and the at least one blocking element being designed to form a spring catch locking separate to the locking device for, in the closing position, mechanically locking the first connecting module with respect to the second connecting module against forces acting in a direction opposite the closing direction, but not preventing a movement of the first connecting module or said part of the first connecting module with respect to the second connecting module in the opening direction,
• wherein the locking device is unlockable by moving the first connecting module or a part of the first connecting module in an unlocking direction, and
• wherein in an unlocked state of the locking device, the first connecting module or said part of the first connecting module is rotatable with respect to the second connecting module in the opening direction to release the spring catch locking formed by said at least one spring lock element and said at least one blocking element to allow a separation of the first connecting module and the second connecting module from one another, wherein a rotational axis of the first connecting module or said part of the first connecting module extends parallel with the closing direction.