Abstract: A working machine (1) includes a mobile chassis (2) that can move on a surface of the ground, a lifting arm (3) mounted on the chassis (2) to pivot about a horizontal axis (4) for a raising and lowering movement of the arm (3), and an accessory coupler (5) that can be secured to the free end of the arm (3) by a pivot link (6) with axis parallel to the axis (4) for pivoting the arm (3) with respect to the chassis (2). The coupler (5) has a plate (7) having a rear face (8) facing the arm (3) equipped with said pivot link (6) of the coupler (5) to the arm (3) and an opposite front face (9). The plate (7) is provided with a through-opening (10) and at least one part (61) of the pivot link (6) connecting the coupler (5) to the arm (3) is arranged facing the opening (10).

Abstract: The invention concerns a working machine (1) comprising a mobile chassis (2) that can move on a surface of the ground, a lifting arm (3) mounted on the chassis (2) to pivot about a horizontal axis (4) for a raising and lowering movement of the arm (3), and an accessory coupler (5) that can be secured to the free end of the arm (3) by a pivot link (6) with axis parallel to the axis (4) for pivoting the arm (3) with respect to the chassis (2). The coupler (5) comprises a plate (7) having a rear face (8) facing the arm (3) equipped with said pivot link (6) of the coupler (5) to the arm (3) and an opposite front face (9). The plate (7) is provided with a through-opening (10) and at least one part (61) of the pivot link (6) connecting the coupler (5) to the arm (3) is arranged facing said opening (10).