Adapter unit

The invention relates to an adapter unit which is provided for coupling, in particular releasably coupling, a wiper blade to a wiper arm, having a wind deflecting surface which is designed to deflect inflowing air and press the wiper blade against a vehicle pane, wherein the wind deflecting surface is bordered by a wind deflecting surface edge, and the wind deflecting surface edge has at least *a side which faces the wind and which extends largely in a wiper arm direction, *a side which faces away from the wind and which extends largely in the wiper arm direction, a right-hand side which is arranged between the side facing the wind and the side facing away from the wind and which is arranged on the wiper arm side of the adapter and is designed to couple the adapter unit to the wiper arm, *a rear left-hand side which adjoins the side facing away from the wind and is arranged on the adapter side opposite the wiper arm side, and *a front left-hand side which adjoins the side facing the wind and is arranged on the adapter side lying opposite the wiper arm side. According to the invention, the side facing away from the wind and the right-hand side define a rear angle ranging between 110° and 160°, preferably between 120° and 150°, particularly preferably between 130° and 140°.