Lateral guide for shading roller blind, and shading roller blind for motor vehicles

A lateral guide for a shading roller blind, said guide comprising a guide rail and a connection piece, said guide rail comprising a guide groove which receives a sliding element therein guiding a free end of a pull-out profile of a roller blind, said guide rail and said connection piece including respective plug-in elements configured for coupling to one another and when coupled being displaceable relative to one another to compensate for tolerances, said plug-in element of said guide rail being coupled to said plug-in element of said connection piece in a plug-in direction defined along a longitudinal axis of said guide rail, a first of said plug-in elements defining a pair of teeth spaced apart from one another in a direction transverse to the axis and defining a groove therebetween, a second of said plug-in elements defining a pair of grooves and a tooth therebetween, said grooves of said second plug-in element being spaced from one another in a direction transverse to the axis, said teeth and said grooves of said first and second plug-in elements all being oriented in the plug-in direction, said teeth of said first plug-in element being engaged within the respective said grooves of said second plug-in element, and said tooth of said second plug-in element being engaged within said groove of said first plug-in element.