Wiper arm for windscreen wiper

Abstract

The invention is based on a wiper arm (10) for a windshield wiper comprising a mounting part (12) and an articulated part (14) that are connected to each other via a hinged joint (18) that has a hub (24) permanently connected with one part (14 or 12) and open toward the other part (12 or 14), and an articulated axle (22) permanently connected with the other part (12 or 14), wherein one of the ends of a tension spring (20) is attached to an attachment device (26, 28) of the articulated part (14) and the other end is attached to the mounting part (12), and the hub (24) and the articulated axle (22) mutually loaded in the assembled state, and the hinged joint (18), in a preassembled state of the wiper arm (10) in a defined transport position, grips a seating surface that is situated on the side of the parts named above opposite to the hub (24) in relation to the line of force (46) of the tension spring (20) and is formed by at least one bearing surface (32, 34) on the articulated part (14) and on the mounting part (12) in each case. It is proposed that the bearing surfaces (32, 34) are arranged and/or designed in such a fashion that, with a smaller joint angle (φ) beyond the transport position, the articulated axle (22) moves from its seating surface at the hub (24) toward the open end (48) and thereby increases the preload on the tension spring (20).

Dependencies are inferred from the claim text.