Patent ID: 7484332

Claim:
Door, comprising a leaf, which can be moved between an open position and a closed position; a guide element ( 40 ), which is fastened to the leaf and which cooperates with a guide rail ( 20 ) to guide the movement of the leaf; and a locking device ( 50 ), which can be shifted between a release position, in which it allows the movement of the leaf, and a blocking position, in which it opposes the movement of the leaf, the locking device being equipped with a locking element ( 70 ), which, when the device is moved into the locking position, comes to rest against a contact surface ( 25 ) of the guide rail ( 20 ), in which, when in the locking position, the locking element ( 70 ) can be pressed toward the contact surface ( 25 ) by a thrust element, which is attached to the door leaf, with a pretensioning device ( 901 , which pushes the locking element ( 70 ) into the locking position, such-that the locking element, when in the locking position, is located between the thrust element and the guide rail, wherein the locking device ( 50 ) is connected by a tensioning means ( 100 ) to a drive device and/or to a counterbalancing device realized in the form of a tension or torsion spring arrangement in such a way that the drive device and/or the counterbalancing device can exert a force on it which opposes the pretensioning force of the pretensioning device ( 90 ) and pushes the locking device into the release position; and the locking device ( 50 ) has a lever ( 60 ), supported so that it can pivot around an axis which is essentially transverse, to the longitudinal direction of the guide rail ( 20 ), which lever can be connected on one side of the pivot axis ( 43 ) to the tensioning means ( 100 ) and on the other side of the pivot axis ( 43 ) to the locking element ( 70 ), wherein the locking element ( 70 ) is mounted on the lever ( 60 ) so that it can tilt around a tilt axis which is essentially parallel to the pivot axis ( 43 ), wherein, when the locking device ( 50 ) is shifted into the locking position, the locking element ( 70 ) can be laid against the guide element ( 40 ), wherein the locking element ( 40 ) has a first, essentially flat contact surface ( 76 ), which comes to rest against the contact surface ( 25 ) when the device is in the locking position, and a second contact surface ( 78 ), which, in the locking position, rests against the guide element ( 40 ), where the first contact surface ( 76 ) forms an acute angle of less than 30°, with the second contact surface ( 78 ).