Binding unit for sports devices, in particular for a snowboard

The invention relates to a binding unit ( 1 ) for sports devices, in particular for a snowboard. For the purpose of fixing it to the sports device, this binding unit ( 1 ) is provided with a retaining disc ( 12 ), which is substantially circular as seen in plan view, for a base plate ( 11 ) of relatively large surface area. Mounted on this base plate ( 11 ), either directly or indirectly, are coupling parts to provide a connection to a sports shoe, in particular a snowboard shoe. Teeth ( 49, 51 ) are also provided between the base plate ( 11 ) and the retaining disc ( 12 ) inserted therein through a central orifice ( 15 ) or corresponding recess. The teeth ( 49, 51 ) are provided as a means of securely fixing selectively adjustable and fixable angular positions between the retaining disc ( 12 ) and the base plate ( 11 ). At least one slide element ( 24, 25 ) is provided on the retaining disc ( 12 ) and is displaceable from an extracted position ( 26 ), in which it spans or overlaps a transition region ( 28 ) between the retaining disc ( 12 ) and the base plate ( 11 ), to an inserted position, in which the slide element ( 24, 25 ) does not span or overlap the transition region ( 28 ) between the retaining disc ( 12 ) and the base plate ( 11 ) and vice versa.