Fastening construction, in particular for a wing mirror of a motor vehicle

A fastening construction supports a wing mirror unit of an exterior vehicle, the fastening construction comprising a base part which is configured to be fixedly connected with said exterior vehicle, and a rotation part which is arranged to be coupled with the base part and wherein the rotation part is a central shaft for pivotally bearing-mounting a housing of a wing mirror unit, wherein the base part and the rotation part are provided with at least one projection and groove pair cooperating as a bayonet catch, such that in a first angular position of the rotation part relative to the base part, the rotation part, for the purpose of coupling, can be displaced along a geometric axis in an insertion direction towards the base part to bring the projection and groove pair into engagement and that when the projection and groove pair are in engagement, the rotation part is pivotable about the geometric axis from the first angular position to a second angular position, and wherein, after passing an intermediate angular position, through cooperation of the projection and groove pair, the rotation part is locked relative to the base part, axially along the geometric axis, at least in a direction opposite to the insertion direction, and that the rotation part and the base part are further provided with cooperating blocking member which in the second angular position restrain the rotation part from rotation relative to the base part about the geometric axis, wherein the cooperating blocking member comprise a blocking part which cooperates with a stop provided at a point corresponding to the second angular position,

• wherein the blocking part is embodied in a component separate from the rotation part and wherein the blocking part is attached to the rotation part so as to be axially movable relative to the geometric axis and restrained from rotation relative to the rotation part;
• and
• wherein the blocking part and the rotation part are rotation-coupled relative to the geometric axis, and wherein further the stop and the base part are rotation-coupled relative to the geometric axis.