Vehicle lock, in particular for a tailgate door

A vehicle lock mechanism having a latching housing which is mountable to a support or to the body of the vehicle in a variable position and a lock housing which can be introduced into the latching housing, wherein:

• a rotary latch is mounted in the lock housing;
• the latching housing is provided with an interior space for accommodating the lock housing, said interior space having side walls;
• when the lock is closed, the lock housing lies within the interior space of the latching housing, with the rotary latch secured against an abutment of the latching housing;
• the lock housing tapers trapezoidally in a pivoting plane of the rotary latch, becoming progressively narrower in the latching direction, towards the latching housing;
• within the latching housing, sliding wedges which are resiliently displaceable in the latching direction on guide means, and have tapered edges with a wedge angle corresponding to a slope of tapered edges of the lock housing, are assigned to each of said two tapered edges of the lock housing, the spring force acting counter to the latching direction;
• the guide means comprise rough- and fine-positioning guide means;
• the rough-positioning guide means comprises a bore extending in the latching direction within each latching wedge, and an associated guide rod which engages axially in the said bore and is fastened rigidly to the latching housing, with guide play between the bore and the associated guide rod;
• the fine-positioning guide means in each case comprises a planar, inner guide surface of a side wall of the latching housing and a planar side surface of an associated latching wedge;
• and
• when the lock is closed, an amount of guide play in the rough-positioning guide means allows lateral positional fixing of the latching wedges between the lock housing and the latching housing solely by means of the fine-positioning guide means.