Abstract: The invention relates to a crank (14) which is intended for the windscreen wiper mechanism of a motor vehicle. The inventive crank is of the type that comprises a horizontal body (16) having a first end (14a) which is linked in rotation to a wiper arm and a second end (14b) which is articulated to a connecting rod. The aforementioned body (16) comprises: a segment (22) which can be deformed in order to adjust the distance between the ends (14a, 14b) of the crank (14), and a longitudinal oblong hole (24) which divides the aforementioned segment (22) into two deformable longitudinal branches (26) which are symmetrical in relation to a center line of said segment (22). The invention is characterized in that the oblong hole (24) takes the form of a quadrilateral with two essentially-perpendicular diagonals (E1, E2), the larger diagonal (E1) extending along the main axis (C) of symmetry of the segment (22) and intersecting the small diagonal (E2) at the midpoint thereof.

Abstract: The invention relates to a crank (14) which is intended for the windscreen wiper mechanism of a motor vehicle. The inventive crank is of the type that comprises a horizontal body (16) having a first end (14a) which is linked in rotation to a wiper arm and a second end (14b) which is articulated to a connecting rod. The aforementioned body (16) comprises: a segment (22) which can be deformed in order to adjust the distance between the ends (14a, 14b) of the crank (14), and a longitudinal oblong hole (24) which divides the aforementioned segment (22) into two deformable longitudinal branches (26) which are symmetrical in relation to a centre line of said segment (22). The invention is characterised in that the oblong hole (24) takes the form of a quadrilateral with two essentially-perpendicular diagonals (E1, E2), the larger diagonal (E1) extending along the main axis (C) of symmetry of the segment (22) and intersecting the small diagonal (E2) at the midpoint thereof.