Windscreen wiper with support frame fixed on wiper arm has wiper strip guided by support frame and having wiper lip

摘要

The changeover joint (21) is provided outside the wiper strip (4). The changeover joint (21) is arranged between the support frame (3) and the wiper arm (1), and is formed by a rubber-elastic unit, with a progressive spring hardness. The rubber-elastic joint has a lever arm fixed to the wiper arm (1), which is located in a rubber-elastic material. The changeover joint can be formed by a torsion component, which is fixed with its one end to the wiper arm (1) and with its other end to the support frame. It can also be formed by a chamber filled with a fluid and a dividing wall rotatably located in the chamber and fixed to the wiper arm.