Wiper blade and wiper

A wiper blade, comprising a wiping strip and a connection structure, wherein the connection structure comprises:

• an adapter (18) fixed to the wiping strip, the adapter (18) comprising a shaft (48), and a first side part (62) and a second side part (64) which are opposite each other and support the shaft, with a first surface (44) and a second surface (46) being disposed on the first side part and the second side part respectively;
• and
• a connector (16) having an interior, the interior of the connector having an opening (32), a foolproofing part (37) facing the second surface (46), and a hole (34) in communication with the opening;
• wherein when the connector is fitted to the adapter in a predetermined direction, the shaft is hinged into the hole (34) via the opening (32) and the foolproofing part (37) is located above the second surface (46) in a contactless fashion;
• and wherein when the connector is fitted to the adapter in an opposite direction, the first surface obstructs the foolproofing part (37) and the shaft cannot be hinged into the hole (34) via the opening (32).