Device for stopping a door, comprising a connecting arm and a locking mechanism, one of them being fastened to the opening part of the door, the other being fastened to the non-moving structure on which the door is mounted, the said connecting arm comprising at least one face provided with multiple successive notches, in each of which may be accommodated a blocking element movably mounted on the locking mechanism, in a direction comprising a component generally perpendicular to the connecting arm, the said blocking element being submitted to the effect of elastic return means, which act directly or indirectly on the blocking element, thereby making it possible to provide the locking of the device for stopping a door in multiple positions, characterized by the fact that: - a mobile carriage, is able to slide along the connecting arm while providing some resistance to movement, which may be obtained simply by friction between two surfaces in contact belonging respectively to each of these two elements, whereas said mobile carriage is also provided with at least one notch, of generally identical shape to the notches of the connecting arm, as well as with at least two inclined ramps located on opposite sides of the said notch of the mobile carriage; - the said notch of the mobile carriage is provided to receive part of the end of the blocking element, and will, for this reason, preferably be located laterally in relation to the notches of the connecting arm, in such a way that when the blocking element is located at the bottom of a notch in a locked position, the notch of the mobile carriage will be located beside and aligned with a notch of the connecting arm under the effect of the load applied by the blocking element; - whenever the connecting arm is submitted to a sufficient force, the blocking element is pushed away towards the outside of the set composed of a notch of the connecting arm and the notch of the mobile carriage, up to the point where the blocking element is no longer in contact with the notch of the connecting arm, but bears on one of the inclined ramps of the mobile carriage, the connecting arm then being no longer blocked from translational movement by the blocking element. - a mobile carriage, is able to slide along the connecting arm while providing some resistance to movement, which may be obtained simply by friction between two surfaces in contact belonging respectively to each of these two elements, whereas said mobile carriage is also provided with at least one notch, of generally identical shape to the notches of the connecting arm, as well as with at least two inclined ramps located on opposite sides of the said notch of the mobile carriage; - the said notch of the mobile carriage is provided to receive part of the end of the blocking element, and will, for this reason, preferably be located laterally in relation to the notches of the connecting arm, in such a way that when the blocking element is located at the bottom of a notch in a locked position, the notch of the mobile carriage will be located beside and aligned with a notch of the connecting arm under the effect of the load applied by the blocking element; - whenever the connecting arm is submitted to a sufficient force, the blocking element is pushed away towards the outside of the set composed of a notch of the connecting arm and the notch of the mobile carriage, up to the point where the blocking element is no longer in contact with the notch of the connecting arm, but bears on one of the inclined ramps of the mobile carriage, the connecting arm then being no longer blocked from translational movement by the blocking element.