Adapter assembly, wiper blade assembly, windscreen wiper and vehicle

The utility model discloses an adapter assembly, a wiper blade assembly, a windscreen wiper and a vehicle. The adapter assembly is adapted to connect a wiper lever. The wiper lever includes a wiper lever first end and a wiper lever second end disposed along a length, the wiper lever second end for connection with the vehicle, the wiper lever second end adapted to connect with the adapter assembly. The adapter assembly includes an adapter and a retaining element. The adapter is suitable for being connected with the first end of the wiper rod; a retaining element is removably connected with the adapter and cooperates with the adapter to be adapted to retain connection of the wiper lever with the adapter. According to the wiper blade assembly, the retaining element and the adapter are detachably connected, the retaining element can be installed after the adapter and the wiper rod are installed, installation of the adapter and the wiper rod is simpler, more convenient and quicker, and the structure of the wiper blade assembly is further simplified.