Mechanism for securing a connector device to a mating connector device

A mechanism for securing a connector device and a mating connector device to one another and for releasing them from one another, the mechanism having at least one catch arranged on the connector device and a drive with a shaft, the rotation of which is capable of moving the catch to and fro between an open position and a locking position of the catch. The mechanism is constructed such that, during travel between the open position and the locking position, the catch performs a combined pivoting and translational movement, and/or a translational movement on a curved path. The mechanism has a slotted link with a link guide and a link block, wherein the link guide is arranged on the catch and the link block lies on the axis of the shaft or is formed by the shaft. The drive has a crank drive for converting the rotation of the shaft into a movement of the catch between the open position and the locking position and the mechanism has a second slotted link for guiding the catch, wherein a link block of the second slotted link is formed by part of a connecting rod shaft on the catch side with which a connecting rod of the crank drive is coupled to the catch. The catch takes the form of a toggle lever. Furthermore, a connector device with the mechanism and a system consisting of a connector device with a mechanism and a mating connector device having at least one mating catch.